imap: skip sync flags update if highest modseq has not increased

This operation takes roughly 0.3 s on a moderate size database.
Calling it once before scanning all folders and scanning
the watched folder instead of each time after downloading
a message from a folder speeds up IMAP loop.

.github/mergeable.yml

@@ -0,0 +1,26 @@
+version: 2
+mergeable:
+  - when: pull_request.*
+    name: "Changelog check"
+    validate:
+      - do: or
+        validate:
+        - do: description
+          must_include:
+            regex: '#skip-changelog'
+        - do: and
+          validate:
+            - do: dependent
+              changed:
+                file: 'src/**'
+                required: ['CHANGELOG.md']
+            - do: dependent
+              changed:
+                file: 'deltachat-ffi/**'
+                required: ['CHANGELOG.md']
+    fail:
+      - do: checks
+        status: 'action_required' 
+        payload:
+          title: Changlog might need an update
+          summary: "Check if CHANGELOG.md needs an update or add #skip-changelog to the PR description."

.github/workflows/ci.yml

@@ -8,6 +8,9 @@ on:
       - staging
       - trying
 
+env:
+  RUSTFLAGS: -Dwarnings
+
 jobs:
 
   fmt:
@@ -21,6 +24,8 @@ jobs:
           toolchain: stable
           override: true
       - run: rustup component add rustfmt
+      - name: Cache rust cargo artifacts
+        uses: swatinem/rust-cache@v1
       - uses: actions-rs/cargo@v1
         with:
           command: fmt
@@ -35,6 +40,8 @@ jobs:
             toolchain: stable
             components: clippy
             override: true
+      - name: Cache rust cargo artifacts
+        uses: swatinem/rust-cache@v1
       - uses: actions-rs/clippy-check@v1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -76,14 +83,13 @@ jobs:
             rust: 1.54.0
             python: false # Python bindings compilation on Windows is not supported.
 
-          # Minimum Supported Rust Version = 1.48.0
-          # This is the Debian "bullseye" release version of Rust.
+          # Minimum Supported Rust Version = 1.51.0
           #
           # Minimum Supported Python Version = 3.7
           # This is the minimum version for which manylinux Python wheels are
           # built.
           - os: ubuntu-latest
-            rust: 1.48.0
+            rust: 1.51.0
             python: 3.7
     runs-on: ${{ matrix.os }}
     steps:
@@ -95,31 +101,14 @@ jobs:
         toolchain: ${{ matrix.rust }}
         override: true
 
-    - name: Cache cargo registry
-      uses: actions/cache@v2
-      with:
-        path: ~/.cargo/registry
-        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-registry-${{ hashFiles('**/Cargo.toml') }}
-
-    - name: Cache cargo index
-      uses: actions/cache@v2
-      with:
-        path: ~/.cargo/git
-        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-index-${{ hashFiles('**/Cargo.toml') }}
-
-    - name: Cache cargo build
-      uses: actions/cache@v2
-      with:
-        path: target
-        key: ${{ matrix.os }}-${{ matrix.rust }}-cargo-build-target-${{ hashFiles('**/Cargo.toml') }}
+    - name: Cache rust cargo artifacts
+      uses: swatinem/rust-cache@v1
 
     - name: check
       uses: actions-rs/cargo@v1
-      env:
-        RUSTFLAGS: -D warnings
       with:
         command: check
-        args: --all --bins --examples --tests --features repl
+        args: --all --bins --examples --tests --features repl --benches
 
     - name: tests
       uses: actions-rs/cargo@v1
@@ -151,4 +140,4 @@ jobs:
         DCC_RS_TARGET: debug
         DCC_RS_DEV: ${{ github.workspace }}
       working-directory: python
-      run: tox -e lint,doc,py3
+      run: tox -e lint,mypy,doc,py3

.gitignore

@@ -28,3 +28,4 @@ deltachat-ffi/xml
 .rsynclist
 
 coverage/
+.DS_Store

CHANGELOG.md

@@ -1,4 +1,217 @@
-# Changelog 
+# Changelog
+
+## Unreleased
+
+### Changes
+- don't watch Sent folder by default #3025
+- use webxdc app name in chatlist/quotes/replies etc. #3027
+- refactorings #3023
+- remove direct dependency on `byteorder` crate #3031
+- make it possible to cancel message sending by removing the message #3034,
+  this was previosuly removed in 1.71.0 #2939
+- always skip Seen flag synchronization when there are no updates #3039
+
+### Fixes
+- fix splitting off text from webxdc messages #3032
+- call slow `delete_expired_imap_messages()` less often #3037
+- make synchronization of Seen status more robust in case unsolicited FETCH
+  result without UID is returned #3022
+
+
+## 1.72.0
+
+### Fixes
+- run migrations on backup import #3006
+
+
+## 1.71.0
+
+### API Changes
+- added APIs to handle database passwords: `dc_context_new_closed()`, `dc_context_open()`,
+  `dc_context_is_open()` and `dc_accounts_add_closed_account()` #2956 #2972
+- use second parameter of `dc_imex` to provide backup passphrase #2980
+- added `DC_MSG_WEBXDC`, `dc_send_webxdc_status_update()`,
+  `dc_get_webxdc_status_updates()`, `dc_msg_get_webxdc_blob()`, `dc_msg_get_webxdc_info()`
+  and `DC_EVENT_WEBXDC_STATUS_UPDATE` #2826 #2971 #2975 #2977 #2979 #2993 #2994 #2998 #3001 #3003
+- added `dc_msg_get_parent()` #2984
+- added `dc_msg_force_plaintext()` API for bots #2847
+- allow removing quotes on drafts `dc_msg_set_quote(msg, NULL)` #2950
+- removed `mvbox_watch` option; watching is enabled when `mvbox_move` is enabled #2906
+- removed `inbox_watch` option #2922
+- deprecated `os_name` in `dc_context_new()`, pass `NULL` or an empty string #2956
+
+### Changes
+- start making it possible to write to mailing lists #2736
+- add `hop_info` to `dc_get_info()` #2751 #2914 #2923
+- add information about whether the database is encrypted or not to `dc_get_info()` #3000
+- selfstatus now defaults to empty #2951 #2960
+- validate detached cryptographic signatures as used eg. by Thunderbird #2865
+- do not change the draft's `msg_id` on updates and sending #2887
+- add `imap` table to keep track of message UIDs #2909 #2938
+- replace `SendMsgToSmtp` jobs which stored outgoing messages in blobdir with `smtp` SQL table #2939 #2996
+- sql: enable `auto_vacuum=INCREMENTAL` #2931
+- sql: build rusqlite with sqlcipher #2934
+- synchronize Seen status across devices #2942
+- `dc_preconfigure_keypair` now takes ascii armored keys instead of base64 #2862
+- put removed member in Bcc instead of To in the message about removal #2864
+- improve group updates #2889
+- re-write the blob filename creation loop #2981
+- update provider database (11 Jan 2022) #2959
+- python: allow timeout for internal configure tracker API #2967
+- python: remove API deprecated in Python 3.10 #2907
+- refactorings #2932 #2957 #2947
+- improve tests #2863 #2866 #2881 #2908 #2918 #2901 #2973
+- improve documentation #2880 #2886 #2895
+- improve ci #2919 #2926 #2969 #2999
+
+### Fixes
+- fix leaving groups #2929
+- fix unread count #2861
+- make `add_parts()` not early-exit #2879
+- recognize MS Exchange read receipts as read receipts #2890
+- create parent directory if creating a new file fails #2978
+- save "configured" flag later #2974
+- improve log #2928
+- `dc_receive_imf`: don't fail on invalid address in the To field #2940
+
+
+## 1.70.0
+
+### Fixes
+- fix: do not abort Param parsing on unknown keys #2856
+- fix: execute `Chat-Group-Member-Removed:` even when arriving disordered #2857
+
+
+## 1.69.0
+
+### Fixes
+- fix group-related system messages in multi-device setups #2848
+- fix "Google Workspace" (former "G Suite") issues related to bad resolvers #2852
+
+
+## 1.68.0
+
+### Fixes
+- fix chat assignment when forwarding #2843
+- fix layout issues with the generated QR code svg #2842
+
+
+## 1.67.0
+
+### API changes
+- `dc_get_securejoin_qr_svg(chat_id)` added #2815
+- added stock-strings `DC_STR_SETUP_CONTACT_QR_DESC` and `DC_STR_SECURE_JOIN_GROUP_QR_DESC`
+
+
+## 1.66.0
+
+### API changes
+- `dc_contact_get_last_seen()` added #2823
+- python: `Contact.last_seen` added #2823
+- removed `DC_STR_NEWGROUPDRAFT`, we don't set draft after creating group anymore #2805
+
+### Changes
+- python: add cutil.from_optional_dc_charpointer() #2824
+- refactorings #2807 #2822 #2825
+
+
+## 1.65.0
+
+### Changes
+- python: add mypy support and some type hints #2809
+
+### Fixes
+- do not disable ephemeral timer when downloading a message partially #2811
+- apply existing ephemeral timer also to partially downloaded messages;
+  after full download, the ephemeral timer starts over #2811
+- replace user-visible error on verification failure with warning;
+  the error is logged to the corresponding chat anyway #2808
+
+
+## 1.64.0
+
+### Fixes
+- add 'waiting for being added to the group' only for group-joins,
+  not for setup-contact #2797
+- prioritize In-Reply-To: and References: headers over group IDs when assigning
+  messages to chats to fix incorrect assignment of Delta Chat replies to
+  classic email threads #2795
+
+
+## 1.63.0
+
+### API changes
+- `dc_get_last_error()` added #2788
+
+### Changes
+- Optimize Autocrypt gossip #2743
+
+### Fixes
+- fix permanently hiding of one-to-one chats after secure-join #2791
+
+
+## 1.62.0
+
+### API Changes
+- `dc_join_securejoin()` now always returns immediately;
+  the returned chat may not allow sending (`dc_chat_can_send()` returns false)
+  which may change as usual on `DC_EVENT_CHAT_MODIFIED` #2508 #2767
+- introduce multi-device-sync-messages;
+  as older cores display them as files in self-chat,
+  they are currently only sent if config option `send_sync_msgs` is set #2669
+- add `DC_EVENT_SELFAVATAR_CHANGED` #2742
+
+### Changes
+- use system DNS instead of google for MX queries #2780
+- improve error logging #2758
+- improve tests #2764 #2781
+- improve ci #2770
+- refactorings #2677 #2728 #2740 #2729 #2766 #2778
+
+### Fixes
+- add Let's Encrypt certificate to core as it may be missing older devices #2752
+- prioritize certificate setting from user over the one from provider-db #2749
+- fix "QR process failed" error #2725
+- do not update quota in endless loop #2726
+
+
+## 1.61.0
+
+### API Changes
+- download-on-demand added: `dc_msg_get_download_state()`, `dc_download_full_msg()`
+  and `download_limit` config option #2631 #2696
+- `dc_create_broadcast_list()` and chat type `DC_CHAT_TYPE_BROADCAST` added #2707 #2722
+- allow ui-specific configs using `ui.`-prefix in key (`dc_set_config(context, "ui.*", value)`) #2672
+- new strings from `DC_STR_PARTIAL_DOWNLOAD_MSG_BODY`
+  to `DC_STR_PART_OF_TOTAL_USED` #2631 #2694 #2707 #2723
+- emit warnings and errors from account manager with account-id 0 #2712
+
+### Changes
+- notify about incoming contact requests #2690
+- messages are marked as read on first read receipt #2699
+- quota warning reappears after import, rewarning at 95% #2702
+- lock strict TLS if certificate checks are automatic #2711
+- always check certificates strictly when connecting over SOCKS5 in Automatic mode #2657
+- `Accounts` is not cloneable anymore #2654 #2658
+- update chat/contact data only when there was no newer update #2642
+- better detection of mailing list names #2665 #2685
+- log all decisions when applying ephemeral timer to chats #2679
+- connectivity view now translatable #2694 #2723
+- improve Doxygen documentation #2647 #2668 #2684 #2688 #2705
+- refactorings #2656 #2659 #2677 #2673 #2678 #2675 #2663 #2692 #2706
+- update provider database #2618
+
+### Fixes
+- ephemeral timer rollback protection #2693 #2709
+- recreate configured folders if they are deleted #2691
+- ignore MDNs sent to self #2674
+- recognize NDNs that put headers into "message/global-headers" part #2598
+- avoid `dc_get_contacts()` returning duplicate contact ids #2591
+- do not leak group names on forwarding messages #2719
+- in case of smtp-errors, iterate over all addresses to fix ipv6/v4 problems #2720
+- fix pkg-config file #2660
+- fix "QR process failed" error #2725
+
 
 ## 1.60.0
 
@@ -13,6 +226,7 @@
 ### Fixes
 - keep event emitter from closing when there are no accounts #2636
 
+
 ## 1.59.0
 
 ### Added
@@ -37,7 +251,6 @@
 ## 1.58.0
 
 ### Fixes
-
 - move WAL file together with database
   and avoid using data if the database was not closed correctly before #2583
 

CMakeLists.txt

@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 project(deltachat LANGUAGES C)
+include(GNUInstallDirs)
 
 find_program(CARGO cargo)
 
@@ -35,7 +36,6 @@ add_custom_target(
 	"target/release/pkgconfig/deltachat.pc"
 )
 
-include(GNUInstallDirs)
 install(FILES "deltachat-ffi/deltachat.h" DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 install(FILES "target/release/libdeltachat.a" DESTINATION ${CMAKE_INSTALL_LIBDIR})
 install(FILES "target/release/libdeltachat.so" DESTINATION ${CMAKE_INSTALL_LIBDIR})

Cargo.toml

@@ -1,9 +1,10 @@
 [package]
 name = "deltachat"
-version = "1.60.0"
+version = "1.72.0"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
 license = "MPL-2.0"
+resolver = "2"
 
 [profile.dev]
 debug = 0
@@ -11,80 +12,84 @@ debug = 0
 [profile.release]
 lto = true
 
+[patch.crates-io]
+rusqlite = { git = "https://github.com/rusqlite/rusqlite", branch="master" }
+
 [dependencies]
 deltachat_derive = { path = "./deltachat_derive" }
 
 ansi_term = { version = "0.12.1", optional = true }
-anyhow = "1.0.42"
+anyhow = "1"
 async-imap = { git = "https://github.com/async-email/async-imap" }
-async-native-tls = { version = "0.3.3" }
+async-native-tls = { version = "0.3" }
 async-smtp = { git = "https://github.com/async-email/async-smtp", branch="master", features = ["socks5"] }
-async-std-resolver = "0.20.3"
-async-std = { version = "~1.9.0", features = ["unstable"] }
-async-tar = "0.3.0"
-async-trait = "0.1.50"
-backtrace = "0.3.59"
+async-std-resolver = "0.20"
+async-std = { version = "1", features = ["unstable"] }
+async-tar = { version = "0.4", default-features=false }
+async-trait = "0.1"
+backtrace = "0.3"
 base64 = "0.13"
-bitflags = "1.3.1"
-byteorder = "1.3.1"
-chrono = "0.4.6"
-dirs = { version = "3.0.2", optional=true }
+bitflags = "1.3"
+chrono = "0.4"
+dirs = { version = "4", optional=true }
 email = { git = "https://github.com/deltachat/rust-email", branch = "master" }
 encoded-words = { git = "https://github.com/async-email/encoded-words", branch="master" }
-escaper = "0.1.1"
-futures = "0.3.16"
+escaper = "0.1"
+futures = "0.3"
 hex = "0.4.0"
 image = { version = "0.23.5", default-features=false, features = ["gif", "jpeg", "ico", "png", "pnm", "webp", "bmp"] }
-indexmap = "1.7.0"
-itertools = "0.10.1"
+imap-proto = "0.14.3"
 kamadak-exif = "0.5"
 lettre_email = { git = "https://github.com/deltachat/lettre", branch = "master" }
-libc = "0.2.98"
+libc = "0.2"
 log = {version = "0.4.8", optional = true }
-mailparse = "0.13.5"
-native-tls = "0.2.3"
-num_cpus = "1.13.0"
-num-derive = "0.3.0"
-num-traits = "0.2.6"
-once_cell = "1.8.0"
+mailparse = "0.13"
+native-tls = "0.2"
+num_cpus = "1.13"
+num-derive = "0.3"
+num-traits = "0.2"
+once_cell = "1.9.0"
 percent-encoding = "2.0"
-pgp = { version = "0.7.0", default-features = false }
-pretty_env_logger = { version = "0.4.0", optional = true }
-quick-xml = "0.22.0"
-r2d2 = "0.8.9"
-r2d2_sqlite = "0.18.0"
-rand = "0.7.0"
-regex = "1.4.6"
-rusqlite = "0.25"
-rust-hsluv = "0.1.4"
-rustyline = { version = "8.2.0", optional = true }
-sanitize-filename = "0.3.0"
+pgp = { version = "0.7", default-features = false }
+pretty_env_logger = { version = "0.4", optional = true }
+quick-xml = "0.22"
+r2d2 = "0.8"
+r2d2_sqlite = "0.19"
+rand = "0.7"
+regex = "1.5"
+rusqlite = { version = "0.26", features = ["sqlcipher"] }
+rust-hsluv = "0.1"
+rustyline = { version = "9", optional = true }
+sanitize-filename = "0.3"
 serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
-sha-1 = "0.9.7"
-sha2 = "0.9.5"
-smallvec = "1.0.0"
-stop-token = "0.2.0"
-strum = "0.21.0"
-strum_macros = "0.21.1"
-surf = { version = "2.0.0-alpha.4", default-features = false, features = ["h1-client"] }
-thiserror = "1.0.26"
-toml = "0.5.6"
-url = "2.2.2"
+sha-1 = "0.10"
+sha2 = "0.10"
+smallvec = "1"
+stop-token = "0.7"
+strum = "0.23"
+strum_macros = "0.23"
+surf = { version = "2.3", default-features = false, features = ["h1-client"] }
+thiserror = "1"
+toml = "0.5"
+url = "2"
 uuid = { version = "0.8", features = ["serde", "v4"] }
-fast-socks5 = "0.4.2"
-humansize = "1.1.1"
+fast-socks5 = "0.4"
+humansize = "1"
+qrcodegen = "1.7.0"
+tagger = "4.2.1"
+textwrap = "0.14.2"
+zip = { version = "0.5.13", default-features = false, features = ["deflate"] }
 
 [dev-dependencies]
 ansi_term = "0.12.0"
-async-std = { version = "1.9.0", features = ["unstable", "attributes"] }
+async-std = { version = "1", features = ["unstable", "attributes"] }
 criterion = "0.3"
-futures-lite = "1.12.0"
-log = "0.4.11"
-pretty_assertions = "0.7.2"
-pretty_env_logger = "0.4.0"
-proptest = "1.0"
-tempfile = "3.0"
+futures-lite = "1.12"
+log = "0.4"
+pretty_env_logger = "0.4"
+proptest = { version = "1", default-features = false, features = ["std"] }
+tempfile = "3"
 
 [workspace]
 members = [
@@ -119,5 +124,5 @@ harness = false
 default = ["vendored"]
 internals = []
 repl = ["internals", "rustyline", "log", "pretty_env_logger", "ansi_term", "dirs"]
-vendored = ["async-native-tls/vendored", "async-smtp/native-tls-vendored", "rusqlite/bundled"]
+vendored = ["async-native-tls/vendored", "async-smtp/native-tls-vendored", "rusqlite/bundled-sqlcipher-vendored-openssl"]
 nightly = ["pgp/nightly"]

README.md

@@ -125,11 +125,11 @@ $ cargo test -- --ignored
 
 Language bindings are available for:
 
-- [C](https://c.delta.chat)
-- [Node.js](https://www.npmjs.com/package/deltachat-node)
-- [Python](https://py.delta.chat)
-- [Go](https://github.com/deltachat/go-deltachat/)
-- [Free Pascal](https://github.com/deltachat/deltachat-fp/)
+- **C** \[[📂 source](./deltachat-ffi) | [📚 docs](https://c.delta.chat)\]
+- **Node.js** \[[📂 source](https://github.com/deltachat/deltachat-node) | [📦 npm](https://www.npmjs.com/package/deltachat-node) | [📚 docs](https://js.delta.chat)\]
+- **Python** \[[📂 source](./python) | [📦 pypi](https://pypi.org/project/deltachat) | [📚 docs](https://py.delta.chat)\]
+- **Go** \[[📂 source](https://github.com/deltachat/go-deltachat/)\]
+- **Free Pascal** \[[📂 source](https://github.com/deltachat/deltachat-fp/)\]
 - **Java** and **Swift** (contained in the Android/iOS repos)
 
 The following "frontend" projects make use of the Rust-library

assets/icon-broadcast.svg

@@ -0,0 +1,149 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
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+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   enable-background="new 0 0 128 128"
+   viewBox="0 0 60 60"
+   version="1.1"
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+   sodipodi:docname="icon-broadcast.svg"
+   width="60"
+   height="60"
+   inkscape:version="1.0.2 (e86c8708, 2021-01-15)"
+   inkscape:export-filename="/Users/bpetersen/projects/deltachat-core-rust/assets/icon-broadcast.png"
+   inkscape:export-xdpi="409.60001"
+   inkscape:export-ydpi="409.60001">
+  <metadata
+     id="metadata884">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs882" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1329"
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+     inkscape:zoom="5.21875"
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+     inkscape:window-x="111"
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+     inkscape:current-layer="svg878"
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+  <radialGradient
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+       offset="0"
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assets/icon-webxdc.svg

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assets/qrcode_logo_footer.svg

@@ -0,0 +1,10 @@
+<text
+     xml:space="preserve"
+     style="font-weight:bold;font-size:24.4118px;line-height:1.25;font-family:sans-serif;fill:#aaaaaa;fill-opacity:1;stroke:none;stroke-width:0.915439"
+     x="42.325161"
+     y="23.32255"
+     id="text72398">get.delta.chat</text>
+  <path
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benches/contacts.rs

@@ -8,9 +8,7 @@ async fn address_book_benchmark(n: u32, read_count: u32) {
     let dir = tempdir().unwrap();
     let dbfile = dir.path().join("db.sqlite");
     let id = 100;
-    let context = Context::new("FakeOS".into(), dbfile.into(), id)
-        .await
-        .unwrap();
+    let context = Context::new(dbfile.into(), id).await.unwrap();
 
     let book = (0..n)
         .map(|i| format!("Name {}\naddr{}@example.org\n", i, i))

benches/create_account.rs

@@ -8,7 +8,7 @@ async fn create_accounts(n: u32) {
     let dir = tempdir().unwrap();
     let p: PathBuf = dir.path().join("accounts").into();
 
-    let accounts = Accounts::new("my_os".into(), p.clone()).await.unwrap();
+    let mut accounts = Accounts::new(p.clone()).await.unwrap();
 
     for expected_id in 2..n {
         let id = accounts.add_account().await.unwrap();

benches/search_msgs.rs

@@ -6,9 +6,7 @@ use std::path::Path;
 async fn search_benchmark(path: impl AsRef<Path>) {
     let dbfile = path.as_ref();
     let id = 100;
-    let context = Context::new("FakeOS".into(), dbfile.into(), id)
-        .await
-        .unwrap();
+    let context = Context::new(dbfile.into(), id).await.unwrap();
 
     for _ in 0..10u32 {
         context.search_msgs(None, "hello").await.unwrap();

deltachat-ffi/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.60.0"
+version = "1.72.0"
 description = "Deltachat FFI"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
@@ -17,13 +17,13 @@ crate-type = ["cdylib", "staticlib"]
 [dependencies]
 deltachat = { path = "../", default-features = false }
 libc = "0.2"
-human-panic = "1.0.1"
-num-traits = "0.2.6"
+human-panic = "1"
+num-traits = "0.2"
 serde_json = "1.0"
-async-std = "1.9.0"
-anyhow = "1.0.42"
-thiserror = "1.0.26"
-rand = "0.7.3"
+async-std = "1"
+anyhow = "1"
+thiserror = "1"
+rand = "0.7"
 
 [features]
 default = ["vendored"]

deltachat-ffi/Doxyfile

@@ -583,7 +583,7 @@ SORT_MEMBERS_CTORS_1ST = NO
 # appear in their defined order.
 # The default value is: NO.
 
-SORT_GROUP_NAMES       = NO
+SORT_GROUP_NAMES       = YES
 
 # If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be sorted by
 # fully-qualified names, including namespaces. If set to NO, the class list will

deltachat-ffi/Doxyfile.css

@@ -4,4 +4,16 @@ div.fragment {
 	background-color: #e0e0e0;
 	border: 0;
 	padding: 1em;
+	border-radius: 6px;
 }
+
+code {
+	background-color: #e0e0e0;
+	padding-left: .5em;
+	padding-right: .5em;
+	border-radius: 6px;
+}
+
+li {
+	margin-bottom: .5em;
+}

deltachat-ffi/README.md

@@ -1,5 +1,9 @@
 # Delta Chat C Interface
 
+## Installation
+
+see `Installing libdeltachat system wide` in [../README.md](../README.md)
+
 ## Documentation
 
 To generate the C Interface documentation,

deltachat-ffi/src/lot.rs

@@ -0,0 +1,245 @@
+//! # Legacy generic return values for C API.
+
+use crate::message::MessageState;
+use crate::qr::Qr;
+use crate::summary::{Summary, SummaryPrefix};
+use anyhow::Error;
+use std::borrow::Cow;
+
+/// An object containing a set of values.
+/// The meaning of the values is defined by the function returning the object.
+/// Lot objects are created
+/// eg. by chatlist.get_summary() or dc_msg_get_summary().
+///
+/// *Lot* is used in the meaning *heap* here.
+#[derive(Debug)]
+pub enum Lot {
+    Summary(Summary),
+    Qr(Qr),
+    Error(String),
+}
+
+#[repr(u8)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Meaning {
+    None = 0,
+    Text1Draft = 1,
+    Text1Username = 2,
+    Text1Self = 3,
+}
+
+impl Default for Meaning {
+    fn default() -> Self {
+        Meaning::None
+    }
+}
+
+impl Lot {
+    pub fn get_text1(&self) -> Option<&str> {
+        match self {
+            Self::Summary(summary) => match &summary.prefix {
+                None => None,
+                Some(SummaryPrefix::Draft(text)) => Some(text),
+                Some(SummaryPrefix::Username(username)) => Some(username),
+                Some(SummaryPrefix::Me(text)) => Some(text),
+            },
+            Self::Qr(qr) => match qr {
+                Qr::AskVerifyContact { .. } => None,
+                Qr::AskVerifyGroup { grpname, .. } => Some(grpname),
+                Qr::FprOk { .. } => None,
+                Qr::FprMismatch { .. } => None,
+                Qr::FprWithoutAddr { fingerprint, .. } => Some(fingerprint),
+                Qr::Account { domain } => Some(domain),
+                Qr::WebrtcInstance { domain, .. } => Some(domain),
+                Qr::Addr { .. } => None,
+                Qr::Url { url } => Some(url),
+                Qr::Text { text } => Some(text),
+                Qr::WithdrawVerifyContact { .. } => None,
+                Qr::WithdrawVerifyGroup { grpname, .. } => Some(grpname),
+                Qr::ReviveVerifyContact { .. } => None,
+                Qr::ReviveVerifyGroup { grpname, .. } => Some(grpname),
+            },
+            Self::Error(err) => Some(err),
+        }
+    }
+
+    pub fn get_text2(&self) -> Option<Cow<str>> {
+        match self {
+            Self::Summary(summary) => Some(summary.truncated_text(160)),
+            Self::Qr(_) => None,
+            Self::Error(_) => None,
+        }
+    }
+
+    pub fn get_text1_meaning(&self) -> Meaning {
+        match self {
+            Self::Summary(summary) => match &summary.prefix {
+                None => Meaning::None,
+                Some(SummaryPrefix::Draft(_text)) => Meaning::Text1Draft,
+                Some(SummaryPrefix::Username(_username)) => Meaning::Text1Username,
+                Some(SummaryPrefix::Me(_text)) => Meaning::Text1Self,
+            },
+            Self::Qr(_qr) => Meaning::None,
+            Self::Error(_err) => Meaning::None,
+        }
+    }
+
+    pub fn get_state(&self) -> LotState {
+        match self {
+            Self::Summary(summary) => summary.state.into(),
+            Self::Qr(qr) => match qr {
+                Qr::AskVerifyContact { .. } => LotState::QrAskVerifyContact,
+                Qr::AskVerifyGroup { .. } => LotState::QrAskVerifyGroup,
+                Qr::FprOk { .. } => LotState::QrFprOk,
+                Qr::FprMismatch { .. } => LotState::QrFprMismatch,
+                Qr::FprWithoutAddr { .. } => LotState::QrFprWithoutAddr,
+                Qr::Account { .. } => LotState::QrAccount,
+                Qr::WebrtcInstance { .. } => LotState::QrWebrtcInstance,
+                Qr::Addr { .. } => LotState::QrAddr,
+                Qr::Url { .. } => LotState::QrUrl,
+                Qr::Text { .. } => LotState::QrText,
+                Qr::WithdrawVerifyContact { .. } => LotState::QrWithdrawVerifyContact,
+                Qr::WithdrawVerifyGroup { .. } => LotState::QrWithdrawVerifyGroup,
+                Qr::ReviveVerifyContact { .. } => LotState::QrReviveVerifyContact,
+                Qr::ReviveVerifyGroup { .. } => LotState::QrReviveVerifyGroup,
+            },
+            Self::Error(_err) => LotState::QrError,
+        }
+    }
+
+    pub fn get_id(&self) -> u32 {
+        match self {
+            Self::Summary(_) => Default::default(),
+            Self::Qr(qr) => match qr {
+                Qr::AskVerifyContact { contact_id, .. } => *contact_id,
+                Qr::AskVerifyGroup { .. } => Default::default(),
+                Qr::FprOk { contact_id } => *contact_id,
+                Qr::FprMismatch { contact_id } => contact_id.unwrap_or_default(),
+                Qr::FprWithoutAddr { .. } => Default::default(),
+                Qr::Account { .. } => Default::default(),
+                Qr::WebrtcInstance { .. } => Default::default(),
+                Qr::Addr { contact_id } => *contact_id,
+                Qr::Url { .. } => Default::default(),
+                Qr::Text { .. } => Default::default(),
+                Qr::WithdrawVerifyContact { contact_id, .. } => *contact_id,
+                Qr::WithdrawVerifyGroup { .. } => Default::default(),
+                Qr::ReviveVerifyContact { contact_id, .. } => *contact_id,
+                Qr::ReviveVerifyGroup { .. } => Default::default(),
+            },
+            Self::Error(_) => Default::default(),
+        }
+    }
+
+    pub fn get_timestamp(&self) -> i64 {
+        match self {
+            Self::Summary(summary) => summary.timestamp,
+            Self::Qr(_) => Default::default(),
+            Self::Error(_) => Default::default(),
+        }
+    }
+}
+
+#[repr(u32)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum LotState {
+    // Default
+    Undefined = 0,
+
+    // Qr States
+    /// id=contact
+    QrAskVerifyContact = 200,
+
+    /// text1=groupname
+    QrAskVerifyGroup = 202,
+
+    /// id=contact
+    QrFprOk = 210,
+
+    /// id=contact
+    QrFprMismatch = 220,
+
+    /// text1=formatted fingerprint
+    QrFprWithoutAddr = 230,
+
+    /// text1=domain
+    QrAccount = 250,
+
+    /// text1=domain, text2=instance pattern
+    QrWebrtcInstance = 260,
+
+    /// id=contact
+    QrAddr = 320,
+
+    /// text1=text
+    QrText = 330,
+
+    /// text1=URL
+    QrUrl = 332,
+
+    /// text1=error string
+    QrError = 400,
+
+    QrWithdrawVerifyContact = 500,
+
+    /// text1=groupname
+    QrWithdrawVerifyGroup = 502,
+
+    QrReviveVerifyContact = 510,
+
+    /// text1=groupname
+    QrReviveVerifyGroup = 512,
+
+    // Message States
+    MsgInFresh = 10,
+    MsgInNoticed = 13,
+    MsgInSeen = 16,
+    MsgOutPreparing = 18,
+    MsgOutDraft = 19,
+    MsgOutPending = 20,
+    MsgOutFailed = 24,
+    MsgOutDelivered = 26,
+    MsgOutMdnRcvd = 28,
+}
+
+impl Default for LotState {
+    fn default() -> Self {
+        LotState::Undefined
+    }
+}
+
+impl From<MessageState> for LotState {
+    fn from(s: MessageState) -> Self {
+        use MessageState::*;
+        match s {
+            Undefined => LotState::Undefined,
+            InFresh => LotState::MsgInFresh,
+            InNoticed => LotState::MsgInNoticed,
+            InSeen => LotState::MsgInSeen,
+            OutPreparing => LotState::MsgOutPreparing,
+            OutDraft => LotState::MsgOutDraft,
+            OutPending => LotState::MsgOutPending,
+            OutFailed => LotState::MsgOutFailed,
+            OutDelivered => LotState::MsgOutDelivered,
+            OutMdnRcvd => LotState::MsgOutMdnRcvd,
+        }
+    }
+}
+
+impl From<Summary> for Lot {
+    fn from(summary: Summary) -> Self {
+        Lot::Summary(summary)
+    }
+}
+
+impl From<Qr> for Lot {
+    fn from(qr: Qr) -> Self {
+        Lot::Qr(qr)
+    }
+}
+
+// Make it easy to convert errors into the final `Lot`.
+impl From<Error> for Lot {
+    fn from(error: Error) -> Self {
+        Lot::Error(error.to_string())
+    }
+}

deltachat_derive/Cargo.toml

@@ -9,5 +9,5 @@ license = "MPL-2.0"
 proc-macro = true
 
 [dependencies]
-syn = "1.0.74"
-quote = "1.0.2"
+syn = "1"
+quote = "1"

draft/aeap-mvp.rst

@@ -0,0 +1,33 @@
+AEAP MVP
+========
+
+Changes to the UIs
+------------------
+
+- The secondary self addresses (see below) are shown in the UI, but not editable.
+
+- When the user changed the email address in the configure screen, show a dialog to the user, either directly explaining things or with a link to the FAQ (see "Other" below)
+
+Changes in the core
+-------------------
+
+- We have one primary self address and any number of secondary self addresses. `is_self_addr()` checks all of them.
+
+- If the user does a reconfigure and changes the email address, the previous address is added as a secondary self address.
+
+  - don't forget to deduplicate secondary self addresses in case the user switches back and forth between addresses).
+
+  - The key stays the same.
+
+- No changes for 1:1 chats, there simply is a new one
+
+- When we send a message to a group, and the primary address is not a member of a group, but a secondary address is:
+  
+  Add Chat-Group-Member-Removed=<old address> and Chat-Group-Member-Added=<new address> headers to this message
+
+  - On the receiving side, make sure that we accept this (even in verified groups) if the message is signed and the key stayed the same
+
+Other
+-----
+
+- The user is responsible that messages to the old address arrive at the new address, for example by configuring the old provider to forward all emails to the new one.

draft/webxdc-dev-reference.md

@@ -0,0 +1,194 @@
+# Webxdc Developer Reference
+
+## Webxdc File Format
+
+- a **Webxdc app** is a **ZIP-file** with the extension `.xdc`
+- the ZIP-file must use the default compression methods as of RFC 1950,
+  this is "Deflate" or "Store"
+- the ZIP-file must contain at least the file `index.html`
+- if the Webxdc app is started, `index.html` is opened in a restricted webview
+  that allow accessing resources only from the ZIP-file
+
+
+## Webxdc API
+
+There are some additional APIs available once `webxdc.js` is included
+(the file will be provided by the concrete implementations,
+no need to add `webxdc.js` to your ZIP-file):
+
+```html
+<script src="webxdc.js"></script>
+```
+
+### sendUpdate()
+
+```js
+window.webxdc.sendUpdate(update, descr);
+```
+
+Webxdc apps are usually shared in a chat and run independently on each peer.
+To get a shared state, the peers use `sendUpdate()` to send updates to each other.
+
+- `update`: an object with the following fields:  
+    - `update.payload`: any javascript primitive, array or object.
+    - `update.info`: optional, short, informational message that will be added to the chat,
+       eg. "Alice voted" or "Bob scored 123 in MyGame";
+       usually only one line of text is shown,
+       use this option sparingly to not spam the chat.
+    - `update.summary`: optional, short text, shown beside app icon;
+       it is recommended to use some aggregated value,  eg. "8 votes", "Highscore: 123"
+
+- `descr`: short, human-readable description what this update is about.
+  this is shown eg. as a fallback text in an email program.
+
+All peers, including the sending one,
+will receive the update by the callback given to `setUpdateListener()`.
+
+There are situations where the user cannot send messages to a chat,
+eg. contact requests or if the user has left a group.
+In these cases, you can still call `sendUpdate()`,
+however, the update won't be sent to other peers
+and you won't get the update by `setUpdateListener()` nor by `getAllUpdates()`.
+
+
+### setUpdateListener()
+
+```js
+window.webxdc.setUpdateListener((update) => {});
+```
+
+With `setUpdateListener()` you define a callback that receives the updates
+sent by `sendUpdate()`.
+
+- `update`: passed to the callback on updates with the following fields:  
+  `update.payload`: equals the payload given to `sendUpdate()`
+
+The callback is called for updates sent by you or other peers.
+
+
+### getAllUpdates()
+
+```js
+updates = await window.webxdc.getAllUpdates();
+```
+
+In case your Webxdc was just started,
+you may want to reconstruct the state from the last run -
+and also incorporate updates that may have arrived while the app was not running.
+
+- `updates`: All previous updates in an array, 
+  eg. `[{payload: "foo"},{payload: "bar"}]`
+  if `webxdc.sendUpdate({payload: "foo"}); webxdc.sendUpdate({payload: "bar"};` was called on the last run.
+
+The updates are wrapped into a Promise that you can `await` for.
+If you are not in an async function and cannot use `await` therefore,
+you can get the updates with `then()`:
+
+```js
+window.webxdc.getAllUpdates().then(updates => {});
+```
+
+
+### selfAddr
+
+```js
+window.webxdc.selfAddr
+```
+
+Property with the peer's own address.
+This is esp. useful if you want to differ between different peers -
+just send the address along with the payload,
+and, if needed, compare the payload addresses against selfAddr() later on.
+
+
+### selfName
+
+```js
+window.webxdc.selfName
+```
+
+Property with the peer's own name.
+This is name chosen by the user in their settings,
+if there is nothing set, that defaults to the peer's address.
+
+
+## manifest.toml
+
+If the ZIP-file contains a `manifest.toml` in its root directory,
+some basic information are read and used from there.
+
+the `manifest.toml` has the following format
+
+```toml
+name = "My App Name"
+```
+
+- **name** - The name of the app.
+  If no name is set or if there is no manifest, the filename is used as the app name.
+
+
+## App Icon
+
+If the ZIP-root contains an `icon.png` or `icon.jpg`,
+these files are used as the icon for the app.
+The icon should be a square at reasonable width/height;
+round corners etc. will be added by the implementations as needed.
+If no icon is set, a default icon will be used.
+
+
+## Webxdc Examples
+
+The following example shows an input field and  every input is show on all peers.
+
+```html
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <script src="webxdc.js"></script>
+  </head>
+  <body>
+    <input id="input" type="text"/>
+    <a href="" onclick="sendMsg(); return false;">Send</a>
+    <p id="output"></p>
+    <script>
+    
+      function sendMsg() {
+        msg = document.getElementById("input").value;
+        window.webxdc.sendUpdate({payload: msg}, 'Someone typed "'+msg+'".');
+      }
+    
+      function receiveUpdate(update) {
+        document.getElementById('output').innerHTML += update.payload + "<br>";
+      }
+    
+      window.webxdc.setUpdateListener(receiveUpdate);
+      window.webxdc.getAllUpdates().then(updates => updates.forEach(receiveUpdate));
+
+    </script>
+  </body>
+</html>
+```
+
+[Webxdc Development Tool](https://github.com/deltachat/webxdc-dev)
+offers an **Webxdc Simulator** that can be used in many browsers without any installation needed.
+You can also use that repository as a template for your own app -
+just clone and start adapting things to your need.
+
+
+### Advanced Examples
+
+- [2048](https://github.com/adbenitez/2048.xdc)
+- [Draw](https://github.com/adbenitez/draw.xdc)
+- [Poll](https://github.com/r10s/webxdc-poll/)
+- [Tic Tac Toe](https://github.com/Simon-Laux/tictactoe.xdc)
+- Even more with [Topic #webxdc on Github](https://github.com/topics/webxdc)
+
+
+## Closing Remarks
+
+- older devices might not have the newest js features in their webview,
+  you may want to transpile your code down to an older js version eg. with https://babeljs.io
+- there are tons of ideas for enhancements of the API and the file format,
+  eg. in the future, we will may define icon- and manifest-files,
+  allow to aggregate the state or add metadata.

examples/repl/cmdline.rs

@@ -2,7 +2,7 @@ extern crate dirs;
 
 use std::str::FromStr;
 
-use anyhow::{bail, ensure, Error};
+use anyhow::{bail, ensure, Result};
 use async_std::path::Path;
 use deltachat::chat::{
     self, Chat, ChatId, ChatItem, ChatVisibility, MuteDuration, ProtectionStatus,
@@ -13,10 +13,10 @@ use deltachat::contact::*;
 use deltachat::context::*;
 use deltachat::dc_receive_imf::*;
 use deltachat::dc_tools::*;
+use deltachat::download::DownloadState;
 use deltachat::imex::*;
 use deltachat::location;
 use deltachat::log::LogExt;
-use deltachat::lot::LotState;
 use deltachat::message::{self, Message, MessageState, MsgId};
 use deltachat::peerstate::*;
 use deltachat::qr::*;
@@ -98,10 +98,10 @@ async fn reset_tables(context: &Context, bits: i32) {
     });
 }
 
-async fn poke_eml_file(context: &Context, filename: impl AsRef<Path>) -> Result<(), anyhow::Error> {
+async fn poke_eml_file(context: &Context, filename: impl AsRef<Path>) -> Result<()> {
     let data = dc_read_file(context, filename).await?;
 
-    if let Err(err) = dc_receive_imf(context, &data, "import", 0, false).await {
+    if let Err(err) = dc_receive_imf(context, &data, "import", false).await {
         println!("dc_receive_imf errored: {:?}", err);
     }
     Ok(())
@@ -189,10 +189,18 @@ async fn log_msg(context: &Context, prefix: impl AsRef<str>, msg: &Message) {
         MessageState::OutFailed => " !!",
         _ => "",
     };
+
+    let downloadstate = match msg.download_state() {
+        DownloadState::Done => "",
+        DownloadState::Available => " [⬇ Download available]",
+        DownloadState::InProgress => " [⬇ Download in progress...]️",
+        DownloadState::Failure => " [⬇ Download failed]",
+    };
+
     let temp2 = dc_timestamp_to_str(msg.get_timestamp());
     let msgtext = msg.get_text();
     println!(
-        "{}{}{}{}: {} (Contact#{}): {} {}{}{}{}{}{} [{}]",
+        "{}{}{}{}: {} (Contact#{}): {} {}{}{}{}{}{}{} [{}]",
         prefix.as_ref(),
         msg.get_id(),
         if msg.get_showpadlock() { "🔒" } else { "" },
@@ -226,11 +234,12 @@ async fn log_msg(context: &Context, prefix: impl AsRef<str>, msg: &Message) {
             ""
         },
         statestr,
+        downloadstate,
         &temp2,
     );
 }
 
-async fn log_msglist(context: &Context, msglist: &[MsgId]) -> Result<(), Error> {
+async fn log_msglist(context: &Context, msglist: &[MsgId]) -> Result<()> {
     let mut lines_out = 0;
     for &msg_id in msglist {
         if msg_id == MsgId::new(DC_MSG_ID_DAYMARKER) {
@@ -258,59 +267,59 @@ async fn log_msglist(context: &Context, msglist: &[MsgId]) -> Result<(), Error>
     Ok(())
 }
 
-async fn log_contactlist(context: &Context, contacts: &[u32]) {
+async fn log_contactlist(context: &Context, contacts: &[u32]) -> Result<()> {
     for contact_id in contacts {
         let line;
         let mut line2 = "".to_string();
-        if let Ok(contact) = Contact::get_by_id(context, *contact_id).await {
-            let name = contact.get_display_name();
-            let addr = contact.get_addr();
-            let verified_state = contact.is_verified(context).await;
-            let verified_str = if VerifiedStatus::Unverified != verified_state {
-                if verified_state == VerifiedStatus::BidirectVerified {
-                    " √√"
-                } else {
-                    " √"
-                }
+        let contact = Contact::get_by_id(context, *contact_id).await?;
+        let name = contact.get_display_name();
+        let addr = contact.get_addr();
+        let verified_state = contact.is_verified(context).await?;
+        let verified_str = if VerifiedStatus::Unverified != verified_state {
+            if verified_state == VerifiedStatus::BidirectVerified {
+                " √√"
             } else {
-                ""
-            };
-            line = format!(
-                "{}{} <{}>",
-                if !name.is_empty() {
-                    &name
-                } else {
-                    "<name unset>"
-                },
-                verified_str,
-                if !addr.is_empty() {
-                    &addr
-                } else {
-                    "addr unset"
-                }
-            );
-            let peerstate = Peerstate::from_addr(context, &addr)
-                .await
-                .expect("peerstate error");
-            if peerstate.is_some() && *contact_id != 1 {
-                line2 = format!(
-                    ", prefer-encrypt={}",
-                    peerstate.as_ref().unwrap().prefer_encrypt
-                );
+                " √"
             }
-
-            println!("Contact#{}: {}{}", *contact_id, line, line2);
+        } else {
+            ""
+        };
+        line = format!(
+            "{}{} <{}>",
+            if !name.is_empty() {
+                &name
+            } else {
+                "<name unset>"
+            },
+            verified_str,
+            if !addr.is_empty() {
+                &addr
+            } else {
+                "addr unset"
+            }
+        );
+        let peerstate = Peerstate::from_addr(context, &addr)
+            .await
+            .expect("peerstate error");
+        if peerstate.is_some() && *contact_id != 1 {
+            line2 = format!(
+                ", prefer-encrypt={}",
+                peerstate.as_ref().unwrap().prefer_encrypt
+            );
         }
+
+        println!("Contact#{}: {}{}", *contact_id, line, line2);
     }
+    Ok(())
 }
 
 fn chat_prefix(chat: &Chat) -> &'static str {
     chat.typ.into()
 }
 
-pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Result<(), Error> {
+pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Result<()> {
     let mut sel_chat = if !chat_id.is_unset() {
-        Chat::load_from_db(&context, *chat_id).await.ok()
+        Some(Chat::load_from_db(&context, *chat_id).await?)
     } else {
         None
     };
@@ -361,6 +370,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                  chat [<chat-id>|0]\n\
                  createchat <contact-id>\n\
                  creategroup <name>\n\
+                 createbroadcast\n\
                  createprotected <name>\n\
                  addmember <contact-id>\n\
                  removemember <contact-id>\n\
@@ -376,6 +386,8 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                  sendsticker <file> [<text>]\n\
                  sendfile <file> [<text>]\n\
                  sendhtml <file for html-part> [<text for plain-part>]\n\
+                 sendsyncmsg\n\
+                 sendupdate <msg-id> <json status update>\n\
                  videochat\n\
                  draft [<text>]\n\
                  devicemsg <text>\n\
@@ -394,6 +406,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                  ===========================Message commands==\n\
                  listmsgs <query>\n\
                  msginfo <msg-id>\n\
+                 download <msg-id>\n\
                  html <msg-id>\n\
                  listfresh\n\
                  forward <msg-id> <chat-id>\n\
@@ -411,8 +424,10 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                  listblocked\n\
                  ======================================Misc.==\n\
                  getqr [<chat-id>]\n\
+                 getqrsvg [<chat-id>]\n\
                  getbadqr\n\
                  checkqr <qr-content>\n\
+                 joinqr <qr-content>\n\
                  setqr <qr-content>\n\
                  providerinfo <addr>\n\
                  event <event-id to test>\n\
@@ -450,27 +465,39 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                 !arg1.is_empty() && !arg2.is_empty(),
                 "Arguments <msg-id> <setup-code> expected"
             );
-            continue_key_transfer(&context, MsgId::new(arg1.parse()?), &arg2).await?;
+            continue_key_transfer(&context, MsgId::new(arg1.parse()?), arg2).await?;
         }
         "has-backup" => {
             has_backup(&context, blobdir).await?;
         }
         "export-backup" => {
             let dir = dirs::home_dir().unwrap_or_default();
-            imex(&context, ImexMode::ExportBackup, dir.as_ref()).await?;
+            imex(
+                &context,
+                ImexMode::ExportBackup,
+                dir.as_ref(),
+                Some(arg2.to_string()),
+            )
+            .await?;
             println!("Exported to {}.", dir.to_string_lossy());
         }
         "import-backup" => {
             ensure!(!arg1.is_empty(), "Argument <backup-file> missing.");
-            imex(&context, ImexMode::ImportBackup, arg1.as_ref()).await?;
+            imex(
+                &context,
+                ImexMode::ImportBackup,
+                arg1.as_ref(),
+                Some(arg2.to_string()),
+            )
+            .await?;
         }
         "export-keys" => {
             let dir = dirs::home_dir().unwrap_or_default();
-            imex(&context, ImexMode::ExportSelfKeys, dir.as_ref()).await?;
+            imex(&context, ImexMode::ExportSelfKeys, dir.as_ref(), None).await?;
             println!("Exported to {}.", dir.to_string_lossy());
         }
         "import-keys" => {
-            imex(&context, ImexMode::ImportSelfKeys, arg1.as_ref()).await?;
+            imex(&context, ImexMode::ImportSelfKeys, arg1.as_ref(), None).await?;
         }
         "export-setup" => {
             let setup_code = create_setup_code(&context);
@@ -497,13 +524,13 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
         }
         "set" => {
             ensure!(!arg1.is_empty(), "Argument <key> missing.");
-            let key = config::Config::from_str(&arg1)?;
+            let key = config::Config::from_str(arg1)?;
             let value = if arg2.is_empty() { None } else { Some(arg2) };
             context.set_config(key, value).await?;
         }
         "get" => {
             ensure!(!arg1.is_empty(), "Argument <key> missing.");
-            let key = config::Config::from_str(&arg1)?;
+            let key = config::Config::from_str(arg1)?;
             let val = context.get_config(key).await;
             println!("{}={:?}", key, val);
         }
@@ -549,7 +576,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                 );
 
                 for i in (0..cnt).rev() {
-                    let chat = Chat::load_from_db(&context, chatlist.get_chat_id(i)).await?;
+                    let chat = Chat::load_from_db(&context, chatlist.get_chat_id(i)?).await?;
                     println!(
                         "{}#{}: {} [{} fresh] {}{}{}{}",
                         chat_prefix(&chat),
@@ -569,26 +596,25 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                             ""
                         },
                     );
-                    let lot = chatlist.get_summary(&context, i, Some(&chat)).await?;
+                    let summary = chatlist.get_summary(&context, i, Some(&chat)).await?;
                     let statestr = if chat.visibility == ChatVisibility::Archived {
                         " [Archived]"
                     } else {
-                        match lot.get_state() {
-                            LotState::MsgOutPending => " o",
-                            LotState::MsgOutDelivered => " √",
-                            LotState::MsgOutMdnRcvd => " √√",
-                            LotState::MsgOutFailed => " !!",
+                        match summary.state {
+                            MessageState::OutPending => " o",
+                            MessageState::OutDelivered => " √",
+                            MessageState::OutMdnRcvd => " √√",
+                            MessageState::OutFailed => " !!",
                             _ => "",
                         }
                     };
-                    let timestr = dc_timestamp_to_str(lot.get_timestamp());
-                    let text1 = lot.get_text1();
-                    let text2 = lot.get_text2();
+                    let timestr = dc_timestamp_to_str(summary.timestamp);
                     println!(
-                        "{}{}{}{} [{}]{}",
-                        text1.unwrap_or(""),
-                        if text1.is_some() { ": " } else { "" },
-                        text2.unwrap_or(""),
+                        "{}{}{} [{}]{}",
+                        summary
+                            .prefix
+                            .map_or_else(String::new, |prefix| format!("{}: ", prefix)),
+                        summary.text,
                         statestr,
                         &timestr,
                         if chat.is_sending_locations() {
@@ -602,7 +628,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                     );
                 }
             }
-            if location::is_sending_locations_to_chat(&context, None).await {
+            if location::is_sending_locations_to_chat(&context, None).await? {
                 println!("Location streaming enabled.");
             }
             println!("{} chats", cnt);
@@ -705,6 +731,11 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
 
             println!("Group#{} created successfully.", chat_id);
         }
+        "createbroadcast" => {
+            let chat_id = chat::create_broadcast_list(&context).await?;
+
+            println!("Broadcast#{} created successfully.", chat_id);
+        }
         "createprotected" => {
             ensure!(!arg1.is_empty(), "Argument <name> missing.");
             let chat_id =
@@ -717,17 +748,9 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             ensure!(!arg1.is_empty(), "Argument <contact-id> missing.");
 
             let contact_id_0: u32 = arg1.parse()?;
-            if chat::add_contact_to_chat(
-                &context,
-                sel_chat.as_ref().unwrap().get_id(),
-                contact_id_0,
-            )
-            .await
-            {
-                println!("Contact added to chat.");
-            } else {
-                bail!("Cannot add contact to chat.");
-            }
+            chat::add_contact_to_chat(&context, sel_chat.as_ref().unwrap().get_id(), contact_id_0)
+                .await?;
+            println!("Contact added to chat.");
         }
         "removemember" => {
             ensure!(sel_chat.is_some(), "No chat selected.");
@@ -745,7 +768,12 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
         "groupname" => {
             ensure!(sel_chat.is_some(), "No chat selected.");
             ensure!(!arg1.is_empty(), "Argument <name> missing.");
-            chat::set_chat_name(&context, sel_chat.as_ref().unwrap().get_id(), arg1).await?;
+            chat::set_chat_name(
+                &context,
+                sel_chat.as_ref().unwrap().get_id(),
+                &format!("{} {}", arg1, arg2).trim(),
+            )
+            .await?;
 
             println!("Chat name set");
         }
@@ -765,7 +793,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                 chat::get_chat_contacts(&context, sel_chat.as_ref().unwrap().get_id()).await?;
             println!("Memberlist:");
 
-            log_contactlist(&context, &contacts).await;
+            log_contactlist(&context, &contacts).await?;
             println!(
                 "{} contacts\nLocation streaming: {}",
                 contacts.len(),
@@ -773,7 +801,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                     &context,
                     Some(sel_chat.as_ref().unwrap().get_id())
                 )
-                .await,
+                .await?,
             );
         }
         "getlocations" => {
@@ -818,7 +846,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                 sel_chat.as_ref().unwrap().get_id(),
                 seconds,
             )
-            .await;
+            .await?;
             println!(
                 "Locations will be sent to Chat#{} for {} seconds. Use 'setlocation <lat> <lng>' to play around.",
                 sel_chat.as_ref().unwrap().get_id(),
@@ -888,6 +916,20 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             }));
             chat::send_msg(&context, sel_chat.as_ref().unwrap().get_id(), &mut msg).await?;
         }
+        "sendsyncmsg" => match context.send_sync_msg().await? {
+            Some(msg_id) => println!("sync message sent as {}.", msg_id),
+            None => println!("sync message not needed."),
+        },
+        "sendupdate" => {
+            ensure!(
+                !arg1.is_empty() && !arg2.is_empty(),
+                "Arguments <msg-id> <json status update> expected"
+            );
+            let msg_id = MsgId::new(arg1.parse()?);
+            context
+                .send_webxdc_status_update(msg_id, arg2, "this is a webxdc status update")
+                .await?;
+        }
         "videochat" => {
             ensure!(sel_chat.is_some(), "No chat selected.");
             chat::send_videochat_invitation(&context, sel_chat.as_ref().unwrap().get_id()).await?;
@@ -895,12 +937,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
         "listmsgs" => {
             ensure!(!arg1.is_empty(), "Argument <query> missing.");
 
-            let chat = if let Some(ref sel_chat) = sel_chat {
-                Some(sel_chat.get_id())
-            } else {
-                None
-            };
-
+            let chat = sel_chat.as_ref().map(|sel_chat| sel_chat.get_id());
             let time_start = std::time::SystemTime::now();
             let msglist = context.search_msgs(chat, arg1).await?;
             let time_needed = time_start.elapsed().unwrap_or_default();
@@ -1030,6 +1067,12 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             let res = message::get_msg_info(&context, id).await?;
             println!("{}", res);
         }
+        "download" => {
+            ensure!(!arg1.is_empty(), "Argument <msg-id> missing.");
+            let id = MsgId::new(arg1.parse()?);
+            println!("Scheduling download for {:?}", id);
+            id.download_full(&context).await?;
+        }
         "html" => {
             ensure!(!arg1.is_empty(), "Argument <msg-id> missing.");
             let id = MsgId::new(arg1.parse()?);
@@ -1067,7 +1110,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             ensure!(!arg1.is_empty(), "Argument <msg-id> missing.");
             let mut ids = [MsgId::new(0); 1];
             ids[0] = MsgId::new(arg1.parse()?);
-            message::delete_msgs(&context, &ids).await;
+            message::delete_msgs(&context, &ids).await?;
         }
         "listcontacts" | "contacts" | "listverified" => {
             let contacts = Contact::get_all(
@@ -1080,7 +1123,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                 Some(arg1),
             )
             .await?;
-            log_contactlist(&context, &contacts).await;
+            log_contactlist(&context, &contacts).await?;
             println!("{} contacts.", contacts.len());
         }
         "addcontact" => {
@@ -1122,7 +1165,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                     if 0 != i {
                         res += ", ";
                     }
-                    let chat = Chat::load_from_db(&context, chatlist.get_chat_id(i)).await?;
+                    let chat = Chat::load_from_db(&context, chatlist.get_chat_id(i)?).await?;
                     res += &format!("{}#{}", chat_prefix(&chat), chat.get_id());
                 }
             }
@@ -1145,19 +1188,13 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
         }
         "listblocked" => {
             let contacts = Contact::get_all_blocked(&context).await?;
-            log_contactlist(&context, &contacts).await;
+            log_contactlist(&context, &contacts).await?;
             println!("{} blocked contacts.", contacts.len());
         }
         "checkqr" => {
             ensure!(!arg1.is_empty(), "Argument <qr-content> missing.");
-            let res = check_qr(&context, arg1).await;
-            println!(
-                "state={}, id={}, text1={:?}, text2={:?}",
-                res.get_state(),
-                res.get_id(),
-                res.get_text1(),
-                res.get_text2()
-            );
+            let qr = check_qr(&context, arg1).await?;
+            println!("qr={:?}", qr);
         }
         "setqr" => {
             ensure!(!arg1.is_empty(), "Argument <qr-content> missing.");
@@ -1171,7 +1208,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             let socks5_enabled = context
                 .get_config_bool(config::Config::Socks5Enabled)
                 .await?;
-            match provider::get_provider_info(arg1, socks5_enabled).await {
+            match provider::get_provider_info(&context, arg1, socks5_enabled).await {
                 Some(info) => {
                     println!("Information for provider belonging to {}:", arg1);
                     println!("status: {}", info.status as u32);

examples/repl/main.rs

@@ -33,6 +33,8 @@ use rustyline::{
 
 mod cmdline;
 use self::cmdline::*;
+use deltachat::qr_code_generator::get_securejoin_qr_svg;
+use std::fs;
 
 /// Event Handler
 fn receive_event(event: EventType) {
@@ -167,13 +169,14 @@ const DB_COMMANDS: [&str; 10] = [
     "housekeeping",
 ];
 
-const CHAT_COMMANDS: [&str; 33] = [
+const CHAT_COMMANDS: [&str; 36] = [
     "listchats",
     "listarchived",
     "chat",
     "createchat",
     "creategroup",
-    "createverified",
+    "createbroadcast",
+    "createprotected",
     "addmember",
     "removemember",
     "groupname",
@@ -187,6 +190,8 @@ const CHAT_COMMANDS: [&str; 33] = [
     "sendimage",
     "sendfile",
     "sendhtml",
+    "sendsyncmsg",
+    "sendupdate",
     "videochat",
     "draft",
     "listmedia",
@@ -202,13 +207,14 @@ const CHAT_COMMANDS: [&str; 33] = [
     "accept",
     "blockchat",
 ];
-const MESSAGE_COMMANDS: [&str; 6] = [
+const MESSAGE_COMMANDS: [&str; 7] = [
     "listmsgs",
     "msginfo",
     "listfresh",
     "forward",
     "markseen",
     "delmsg",
+    "download",
 ];
 const CONTACT_COMMANDS: [&str; 9] = [
     "listcontacts",
@@ -221,10 +227,12 @@ const CONTACT_COMMANDS: [&str; 9] = [
     "unblock",
     "listblocked",
 ];
-const MISC_COMMANDS: [&str; 10] = [
+const MISC_COMMANDS: [&str; 12] = [
     "getqr",
+    "getqrsvg",
     "getbadqr",
     "checkqr",
+    "joinqr",
     "event",
     "fileinfo",
     "clear",
@@ -290,7 +298,7 @@ async fn start(args: Vec<String>) -> Result<(), Error> {
         println!("Error: Bad arguments, expected [db-name].");
         bail!("No db-name specified");
     }
-    let context = Context::new("CLI".into(), Path::new(&args[1]).to_path_buf(), 0).await?;
+    let context = Context::new(Path::new(&args[1]).to_path_buf(), 0).await?;
 
     let events = context.get_event_emitter();
     async_std::task::spawn(async move {
@@ -325,7 +333,7 @@ async fn start(args: Vec<String>) -> Result<(), Error> {
 
         loop {
             let p = "> ";
-            let readline = rl.readline(&p);
+            let readline = rl.readline(p);
 
             match readline {
                 Ok(line) => {
@@ -409,18 +417,31 @@ async fn handle_cmd(
         "getqr" | "getbadqr" => {
             ctx.start_io().await;
             let group = arg1.parse::<u32>().ok().map(|id| ChatId::new(id));
-            if let Some(mut qr) = dc_get_securejoin_qr(&ctx, group).await {
-                if !qr.is_empty() {
-                    if arg0 == "getbadqr" && qr.len() > 40 {
-                        qr.replace_range(12..22, "0000000000")
-                    }
-                    println!("{}", qr);
-                    let output = Command::new("qrencode")
-                        .args(&["-t", "ansiutf8", qr.as_str(), "-o", "-"])
-                        .output()
-                        .expect("failed to execute process");
-                    io::stdout().write_all(&output.stdout).unwrap();
-                    io::stderr().write_all(&output.stderr).unwrap();
+            let mut qr = dc_get_securejoin_qr(&ctx, group).await?;
+            if !qr.is_empty() {
+                if arg0 == "getbadqr" && qr.len() > 40 {
+                    qr.replace_range(12..22, "0000000000")
+                }
+                println!("{}", qr);
+                let output = Command::new("qrencode")
+                    .args(&["-t", "ansiutf8", qr.as_str(), "-o", "-"])
+                    .output()
+                    .expect("failed to execute process");
+                io::stdout().write_all(&output.stdout).unwrap();
+                io::stderr().write_all(&output.stderr).unwrap();
+            }
+        }
+        "getqrsvg" => {
+            ctx.start_io().await;
+            let group = arg1.parse::<u32>().ok().map(|id| ChatId::new(id));
+            let file = dirs::home_dir().unwrap_or_default().join("qr.svg");
+            match get_securejoin_qr_svg(&ctx, group).await {
+                Ok(svg) => {
+                    fs::write(&file, svg)?;
+                    println!("QR code svg written to: {:#?}", file);
+                }
+                Err(err) => {
+                    bail!("Failed to get QR code svg: {}", err);
                 }
             }
         }

examples/simple.rs

@@ -36,7 +36,7 @@ async fn main() {
     let dir = tempdir().unwrap();
     let dbfile = dir.path().join("db.sqlite");
     log::info!("creating database {:?}", dbfile);
-    let ctx = Context::new("FakeOs".into(), dbfile.into(), 0)
+    let ctx = Context::new(dbfile.into(), 0)
         .await
         .expect("Failed to create context");
     let info = ctx.get_info().await;

proptest-regressions/dc_tools.txt

@@ -7,3 +7,5 @@
 cc c310754465ee0261807b96fa9bcc4861ff9aa286e94667524b5960c69f9b6620 # shrinks to buf = "", approx_chars = 0, do_unwrap = false
 cc 5fd8d730b0a9cdf7308ce58818ca9aefc0255c9ba2a0878944fc48d43a67315b # shrinks to buf = "𑒀ὐ￠🜀\u{1e01b}A a🟠", approx_chars = 0, do_unwrap = false
 cc c6a0029a54137a4b9efc9ef2ea6d9a7dd1d60d1c937bb472b66a174618ba8013 # shrinks to buf = "𐠈0Aᝮa𫝀®!ꫛa¡0A𐢧00𐹠®A  丽ⷐએ  ", approx_chars = 0, do_unwrap = false
+cc 9796807baeda701227dcdcfc9fdaa93ddd556da2bb1630381bfe2e037bee73f6 # shrinks to buf = " ꫛ®a\u{11300}a", approx_chars = 0
+cc 063a4c42ac1ec9aa37af54521b210ba9cd82dcc9cc3be296ca2fedf8240072d4 # shrinks to buf = "a᪠  0A", approx_chars = 0

python/mypy.ini

@@ -0,0 +1,19 @@
+[mypy]
+
+[mypy-deltachat.capi.*]
+ignore_missing_imports = True
+
+[mypy-pluggy.*]
+ignore_missing_imports = True
+
+[mypy-cffi.*]
+ignore_missing_imports = True
+
+[mypy-imapclient.*]
+ignore_missing_imports = True
+
+[mypy-pytest.*]
+ignore_missing_imports = True
+
+[mypy-_pytest.*]
+ignore_missing_imports = True

python/pyproject.toml

@@ -0,0 +1,8 @@
+[build-system]
+requires = ["setuptools>=45", "wheel", "setuptools_scm>=6.2", "cffi>=1.0.0"]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]
+root = ".."
+tag_regex = '^(?P<prefix>py-)?(?P<version>[^\+]+)(?P<suffix>.*)?$'
+git_describe_command = "git describe --dirty --tags --long --match py-*.*"

python/setup.py

@@ -8,17 +8,11 @@ def main():
         long_description = f.read()
     setuptools.setup(
         name='deltachat',
-        setup_requires=['setuptools_scm', 'cffi>=1.0.0'],
-        use_scm_version = {
-            "root": "..",
-            "relative_to": __file__,
-            'tag_regex': r'^(?P<prefix>py-)?(?P<version>[^\+]+)(?P<suffix>.*)?$',
-            'git_describe_command': "git describe --dirty --tags --long --match py-*.*",
-        },
         description='Python bindings for the Delta Chat Core library using CFFI against the Rust-implemented libdeltachat',
         long_description=long_description,
         author='holger krekel, Floris Bruynooghe, Bjoern Petersen and contributors',
         install_requires=['cffi>=1.0.0', 'pluggy', 'imapclient', 'requests'],
+        setup_requires=['setuptools_scm'], # required for compatibility with `python3 setup.py sdist`
         packages=setuptools.find_packages('src'),
         package_dir={'': 'src'},
         cffi_modules=['src/deltachat/_build.py:ffibuilder'],

python/src/deltachat/__init__.py

@@ -19,9 +19,9 @@ except DistributionNotFound:
 
 def get_dc_event_name(integer, _DC_EVENTNAME_MAP={}):
     if not _DC_EVENTNAME_MAP:
-        for name, val in vars(const).items():
+        for name in dir(const):
             if name.startswith("DC_EVENT_"):
-                _DC_EVENTNAME_MAP[val] = name
+                _DC_EVENTNAME_MAP[getattr(const, name)] = name
     return _DC_EVENTNAME_MAP[integer]
 
 
@@ -75,7 +75,6 @@ def run_cmdline(argv=None, account_plugins=None):
         ac.set_config("addr", args.email)
         ac.set_config("mail_pw", args.password)
         ac.set_config("mvbox_move", "0")
-        ac.set_config("mvbox_watch", "0")
         ac.set_config("sentbox_watch", "0")
         ac.set_config("bot", "1")
         configtracker = ac.configure()

python/src/deltachat/account.py

@@ -8,13 +8,14 @@ import os
 from array import array
 from . import const
 from .capi import ffi, lib
-from .cutil import as_dc_charpointer, from_dc_charpointer, iter_array, DCLot
+from .cutil import as_dc_charpointer, from_dc_charpointer, from_optional_dc_charpointer, iter_array, DCLot
 from .chat import Chat
 from .message import Message
 from .contact import Contact
 from .tracker import ImexTracker, ConfigureTracker
 from . import hookspec
 from .events import EventThread
+from typing import Union, Any, Dict, Optional, List, Generator
 
 
 class MissingCredentials(ValueError):
@@ -28,7 +29,7 @@ class Account(object):
     """
     MissingCredentials = MissingCredentials
 
-    def __init__(self, db_path, os_name=None, logging=True):
+    def __init__(self, db_path, os_name=None, logging=True) -> None:
         """ initialize account object.
 
         :param db_path: a path to the account database. The database
@@ -58,11 +59,11 @@ class Account(object):
         hook = hookspec.Global._get_plugin_manager().hook
         hook.dc_account_init(account=self)
 
-    def disable_logging(self):
+    def disable_logging(self) -> None:
         """ disable logging. """
         self._logging = False
 
-    def enable_logging(self):
+    def enable_logging(self) -> None:
         """ re-enable logging. """
         self._logging = True
 
@@ -73,12 +74,12 @@ class Account(object):
         if self._logging:
             self._pm.hook.ac_log_line(message=msg)
 
-    def _check_config_key(self, name):
+    def _check_config_key(self, name: str) -> None:
         if name not in self._configkeys:
             raise KeyError("{!r} not a valid config key, existing keys: {!r}".format(
                            name, self._configkeys))
 
-    def get_info(self):
+    def get_info(self) -> Dict[str, str]:
         """ return dictionary of built config parameters. """
         lines = from_dc_charpointer(lib.dc_get_info(self._dc_context))
         d = {}
@@ -105,19 +106,19 @@ class Account(object):
             cursor += len(entry) + 1
         log("")
 
-    def set_stock_translation(self, id, string):
+    def set_stock_translation(self, id: int, string: str) -> None:
         """ set stock translation string.
 
         :param id: id of stock string (const.DC_STR_*)
         :param value: string to set as new transalation
         :returns: None
         """
-        string = string.encode("utf8")
-        res = lib.dc_set_stock_translation(self._dc_context, id, string)
+        bytestring = string.encode("utf8")
+        res = lib.dc_set_stock_translation(self._dc_context, id, bytestring)
         if res == 0:
             raise ValueError("could not set translation string")
 
-    def set_config(self, name, value):
+    def set_config(self, name: str, value: Optional[str]) -> None:
         """ set configuration values.
 
         :param name: config key name (unicode)
@@ -125,16 +126,16 @@ class Account(object):
         :returns: None
         """
         self._check_config_key(name)
-        name = name.encode("utf8")
-        if name == b"addr" and self.is_configured():
+        namebytes = name.encode("utf8")
+        if namebytes == b"addr" and self.is_configured():
             raise ValueError("can not change 'addr' after account is configured.")
         if value is not None:
-            value = value.encode("utf8")
+            valuebytes = value.encode("utf8")
         else:
-            value = ffi.NULL
-        lib.dc_set_config(self._dc_context, name, value)
+            valuebytes = ffi.NULL
+        lib.dc_set_config(self._dc_context, namebytes, valuebytes)
 
-    def get_config(self, name):
+    def get_config(self, name: str) -> str:
         """ return unicode string value.
 
         :param name: configuration key to lookup (eg "addr" or "mail_pw")
@@ -143,12 +144,12 @@ class Account(object):
         """
         if name != "sys.config_keys":
             self._check_config_key(name)
-        name = name.encode("utf8")
-        res = lib.dc_get_config(self._dc_context, name)
+        namebytes = name.encode("utf8")
+        res = lib.dc_get_config(self._dc_context, namebytes)
         assert res != ffi.NULL, "config value not found for: {!r}".format(name)
         return from_dc_charpointer(res)
 
-    def _preconfigure_keypair(self, addr, public, secret):
+    def _preconfigure_keypair(self, addr: str, public: str, secret: str) -> None:
         """See dc_preconfigure_keypair() in deltachat.h.
 
         In other words, you don't need this.
@@ -160,7 +161,7 @@ class Account(object):
         if res == 0:
             raise Exception("Failed to set key")
 
-    def update_config(self, kwargs):
+    def update_config(self, kwargs: Dict[str, Any]) -> None:
         """ update config values.
 
         :param kwargs: name=value config settings for this account.
@@ -170,7 +171,7 @@ class Account(object):
         for key, value in kwargs.items():
             self.set_config(key, str(value))
 
-    def is_configured(self):
+    def is_configured(self) -> bool:
         """ determine if the account is configured already; an initial connection
         to SMTP/IMAP has been verified.
 
@@ -178,7 +179,13 @@ class Account(object):
         """
         return True if lib.dc_is_configured(self._dc_context) else False
 
-    def set_avatar(self, img_path):
+    def is_open(self) -> bool:
+        """Determine if account is open
+
+        :returns True if account is open."""
+        return True if lib.dc_context_is_open(self._dc_context) else False
+
+    def set_avatar(self, img_path: Optional[str]) -> None:
         """Set self avatar.
 
         :raises ValueError: if profile image could not be set
@@ -190,20 +197,18 @@ class Account(object):
             assert os.path.exists(img_path), img_path
             self.set_config("selfavatar", img_path)
 
-    def check_is_configured(self):
+    def check_is_configured(self) -> None:
         """ Raise ValueError if this account is not configured. """
         if not self.is_configured():
             raise ValueError("need to configure first")
 
-    def get_latest_backupfile(self, backupdir):
+    def get_latest_backupfile(self, backupdir) -> Optional[str]:
         """ return the latest backup file in a given directory.
         """
         res = lib.dc_imex_has_backup(self._dc_context, as_dc_charpointer(backupdir))
-        if res == ffi.NULL:
-            return None
-        return from_dc_charpointer(res)
+        return from_optional_dc_charpointer(res)
 
-    def get_blobdir(self):
+    def get_blobdir(self) -> str:
         """ return the directory for files.
 
         All sent files are copied to this directory if necessary.
@@ -211,15 +216,15 @@ class Account(object):
         """
         return from_dc_charpointer(lib.dc_get_blobdir(self._dc_context))
 
-    def get_self_contact(self):
+    def get_self_contact(self) -> Contact:
         """ return this account's identity as a :class:`deltachat.contact.Contact`.
 
         :returns: :class:`deltachat.contact.Contact`
         """
         return Contact(self, const.DC_CONTACT_ID_SELF)
 
-    def create_contact(self, obj, name=None):
-        """ create a (new) Contact or return an existing one.
+    def create_contact(self, obj, name: Optional[str] = None) -> Contact:
+        """create a (new) Contact or return an existing one.
 
         Calling this method will always result in the same
         underlying contact id.  If there already is a Contact
@@ -236,13 +241,13 @@ class Account(object):
         contact_id = lib.dc_create_contact(self._dc_context, name, addr)
         return Contact(self, contact_id)
 
-    def get_contact(self, obj):
+    def get_contact(self, obj) -> Optional[Contact]:
         if isinstance(obj, Contact):
             return obj
         (_, addr) = self.get_contact_addr_and_name(obj)
         return self.get_contact_by_addr(addr)
 
-    def get_contact_addr_and_name(self, obj, name=None):
+    def get_contact_addr_and_name(self, obj, name: Optional[str] = None):
         if isinstance(obj, Account):
             if not obj.is_configured():
                 raise ValueError("can only add addresses from configured accounts")
@@ -260,7 +265,7 @@ class Account(object):
             name = displayname
         return (name, addr)
 
-    def delete_contact(self, contact):
+    def delete_contact(self, contact: Contact) -> bool:
         """ delete a Contact.
 
         :param contact: contact object obtained
@@ -271,22 +276,23 @@ class Account(object):
         assert contact_id > const.DC_CHAT_ID_LAST_SPECIAL
         return bool(lib.dc_delete_contact(self._dc_context, contact_id))
 
-    def get_contact_by_addr(self, email):
+    def get_contact_by_addr(self, email: str) -> Optional[Contact]:
         """ get a contact for the email address or None if it's blocked or doesn't exist. """
         _, addr = parseaddr(email)
         addr = as_dc_charpointer(addr)
         contact_id = lib.dc_lookup_contact_id_by_addr(self._dc_context, addr)
         if contact_id:
             return self.get_contact_by_id(contact_id)
+        return None
 
-    def get_contact_by_id(self, contact_id):
-        """ return Contact instance or None.
+    def get_contact_by_id(self, contact_id: int) -> Contact:
+        """ return Contact instance or raise an exception.
         :param contact_id: integer id of this contact.
-        :returns: None or :class:`deltachat.contact.Contact` instance.
+        :returns: :class:`deltachat.contact.Contact` instance.
         """
         return Contact(self, contact_id)
 
-    def get_blocked_contacts(self):
+    def get_blocked_contacts(self) -> List[Contact]:
         """ return a list of all blocked contacts.
 
         :returns: list of :class:`deltachat.contact.Contact` objects.
@@ -297,8 +303,13 @@ class Account(object):
         )
         return list(iter_array(dc_array, lambda x: Contact(self, x)))
 
-    def get_contacts(self, query=None, with_self=False, only_verified=False):
-        """ get a (filtered) list of contacts.
+    def get_contacts(
+        self,
+        query: Optional[str] = None,
+        with_self: bool = False,
+        only_verified: bool = False,
+    ) -> List[Contact]:
+        """get a (filtered) list of contacts.
 
         :param query: if a string is specified, only return contacts
                       whose name or e-mail matches query.
@@ -318,7 +329,7 @@ class Account(object):
         )
         return list(iter_array(dc_array, lambda x: Contact(self, x)))
 
-    def get_fresh_messages(self):
+    def get_fresh_messages(self) -> Generator[Message, None, None]:
         """ yield all fresh messages from all chats. """
         dc_array = ffi.gc(
             lib.dc_get_fresh_msgs(self._dc_context),
@@ -326,12 +337,17 @@ class Account(object):
         )
         yield from iter_array(dc_array, lambda x: Message.from_db(self, x))
 
-    def create_chat(self, obj):
+    def create_chat(self, obj) -> Chat:
         """ Create a 1:1 chat with Account, Contact or e-mail address. """
         return self.create_contact(obj).create_chat()
 
-    def create_group_chat(self, name, contacts=None, verified=False):
-        """ create a new group chat object.
+    def create_group_chat(
+        self,
+        name: str,
+        contacts: Optional[List[Contact]] = None,
+        verified: bool = False,
+    ) -> Chat:
+        """create a new group chat object.
 
         Chats are unpromoted until the first message is sent.
 
@@ -347,7 +363,7 @@ class Account(object):
                 chat.add_contact(contact)
         return chat
 
-    def get_chats(self):
+    def get_chats(self) -> List[Chat]:
         """ return list of chats.
 
         :returns: a list of :class:`deltachat.chat.Chat` objects.
@@ -364,17 +380,17 @@ class Account(object):
             chatlist.append(Chat(self, chat_id))
         return chatlist
 
-    def get_device_chat(self):
+    def get_device_chat(self) -> Chat:
         return Contact(self, const.DC_CONTACT_ID_DEVICE).create_chat()
 
-    def get_message_by_id(self, msg_id):
+    def get_message_by_id(self, msg_id: int) -> Message:
         """ return Message instance.
         :param msg_id: integer id of this message.
         :returns: :class:`deltachat.message.Message` instance.
         """
         return Message.from_db(self, msg_id)
 
-    def get_chat_by_id(self, chat_id):
+    def get_chat_by_id(self, chat_id: int) -> Chat:
         """ return Chat instance.
         :param chat_id: integer id of this chat.
         :returns: :class:`deltachat.chat.Chat` instance.
@@ -386,19 +402,21 @@ class Account(object):
         lib.dc_chat_unref(res)
         return Chat(self, chat_id)
 
-    def mark_seen_messages(self, messages):
+    def mark_seen_messages(self, messages: List[Union[int, Message]]) -> None:
         """ mark the given set of messages as seen.
 
         :param messages: a list of message ids or Message instances.
         """
         arr = array("i")
         for msg in messages:
-            msg = getattr(msg, "id", msg)
-            arr.append(msg)
+            if isinstance(msg, Message):
+                arr.append(msg.id)
+            else:
+                arr.append(msg)
         msg_ids = ffi.cast("uint32_t*", ffi.from_buffer(arr))
         lib.dc_markseen_msgs(self._dc_context, msg_ids, len(messages))
 
-    def forward_messages(self, messages, chat):
+    def forward_messages(self, messages: List[Message], chat: Chat) -> None:
         """ Forward list of messages to a chat.
 
         :param messages: list of :class:`deltachat.message.Message` object.
@@ -408,7 +426,7 @@ class Account(object):
         msg_ids = [msg.id for msg in messages]
         lib.dc_forward_msgs(self._dc_context, msg_ids, len(msg_ids), chat.id)
 
-    def delete_messages(self, messages):
+    def delete_messages(self, messages: List[Message]) -> None:
         """ delete messages (local and remote).
 
         :param messages: list of :class:`deltachat.message.Message` object.
@@ -466,7 +484,7 @@ class Account(object):
     def imex(self, path, imex_cmd):
         lib.dc_imex(self._dc_context, imex_cmd, as_dc_charpointer(path), ffi.NULL)
 
-    def initiate_key_transfer(self):
+    def initiate_key_transfer(self) -> str:
         """return setup code after a Autocrypt setup message
         has been successfully sent to our own e-mail address ("self-sent message").
         If sending out was unsuccessful, a RuntimeError is raised.
@@ -477,7 +495,7 @@ class Account(object):
             raise RuntimeError("could not send out autocrypt setup message")
         return from_dc_charpointer(res)
 
-    def get_setup_contact_qr(self):
+    def get_setup_contact_qr(self) -> str:
         """ get/create Setup-Contact QR Code as ascii-string.
 
         this string needs to be transferred to another DC account
@@ -527,7 +545,9 @@ class Account(object):
             raise ValueError("could not join group")
         return Chat(self, chat_id)
 
-    def set_location(self, latitude=0.0, longitude=0.0, accuracy=0.0):
+    def set_location(
+        self, latitude: float = 0.0, longitude: float = 0.0, accuracy: float = 0.0
+    ) -> None:
         """set a new location. It effects all chats where we currently
         have enabled location streaming.
 
@@ -571,7 +591,7 @@ class Account(object):
     def get_connectivity(self):
         return lib.dc_get_connectivity(self._dc_context)
 
-    def get_connectivity_html(self):
+    def get_connectivity_html(self) -> str:
         return from_dc_charpointer(lib.dc_get_connectivity_html(self._dc_context))
 
     def all_work_done(self):
@@ -621,7 +641,7 @@ class Account(object):
         """
         lib.dc_maybe_network(self._dc_context)
 
-    def configure(self, reconfigure=False):
+    def configure(self, reconfigure: bool = False) -> ConfigureTracker:
         """ Start configuration process and return a Configtracker instance
         on which you can block with wait_finish() to get a True/False success
         value for the configuration process.
@@ -634,11 +654,11 @@ class Account(object):
         lib.dc_configure(self._dc_context)
         return configtracker
 
-    def wait_shutdown(self):
+    def wait_shutdown(self) -> None:
         """ wait until shutdown of this account has completed. """
         self._shutdown_event.wait()
 
-    def stop_io(self):
+    def stop_io(self) -> None:
         """ stop core IO scheduler if it is running. """
         self.log("stop_ongoing")
         self.stop_ongoing()
@@ -646,7 +666,7 @@ class Account(object):
         self.log("dc_stop_io (stop core IO scheduler)")
         lib.dc_stop_io(self._dc_context)
 
-    def shutdown(self):
+    def shutdown(self) -> None:
         """ shutdown and destroy account (stop callback thread, close and remove
         underlying dc_context)."""
         if self._dc_context is None:

python/src/deltachat/chat.py

@@ -3,12 +3,13 @@
 import mimetypes
 import calendar
 import json
-from datetime import datetime
+from datetime import datetime, timezone
 import os
 from .cutil import as_dc_charpointer, from_dc_charpointer, iter_array
 from .capi import lib, ffi
 from . import const
 from .message import Message
+from typing import Optional
 
 
 class Chat(object):
@@ -17,20 +18,20 @@ class Chat(object):
     You obtain instances of it through :class:`deltachat.account.Account`.
     """
 
-    def __init__(self, account, id):
+    def __init__(self, account, id) -> None:
         from .account import Account
         assert isinstance(account, Account), repr(account)
         self.account = account
         self.id = id
 
-    def __eq__(self, other):
+    def __eq__(self, other) -> bool:
         return self.id == getattr(other, "id", None) and \
                self.account._dc_context == other.account._dc_context
 
-    def __ne__(self, other):
+    def __ne__(self, other) -> bool:
         return not (self == other)
 
-    def __repr__(self):
+    def __repr__(self) -> str:
         return "<Chat id={} name={}>".format(self.id, self.get_name())
 
     @property
@@ -40,7 +41,7 @@ class Chat(object):
             lib.dc_chat_unref
         )
 
-    def delete(self):
+    def delete(self) -> None:
         """Delete this chat and all its messages.
 
         Note:
@@ -50,24 +51,24 @@ class Chat(object):
         """
         lib.dc_delete_chat(self.account._dc_context, self.id)
 
-    def block(self):
+    def block(self) -> None:
         """Block this chat."""
         lib.dc_block_chat(self.account._dc_context, self.id)
 
-    def accept(self):
+    def accept(self) -> None:
         """Accept this contact request chat."""
         lib.dc_accept_chat(self.account._dc_context, self.id)
 
     # ------  chat status/metadata API ------------------------------
 
-    def is_group(self):
+    def is_group(self) -> bool:
         """ return true if this chat is a group chat.
 
         :returns: True if chat is a group-chat, false if it's a contact 1:1 chat.
         """
         return lib.dc_chat_get_type(self._dc_chat) == const.DC_CHAT_TYPE_GROUP
 
-    def is_muted(self):
+    def is_muted(self) -> bool:
         """ return true if this chat is muted.
 
         :returns: True if chat is muted, False otherwise.
@@ -90,7 +91,7 @@ class Chat(object):
         """
         return not lib.dc_chat_is_unpromoted(self._dc_chat)
 
-    def can_send(self):
+    def can_send(self) -> bool:
         """Check if messages can be sent to a give chat.
         This is not true eg. for the contact requests or for the device-talk
 
@@ -98,30 +99,30 @@ class Chat(object):
         """
         return lib.dc_chat_can_send(self._dc_chat)
 
-    def is_protected(self):
+    def is_protected(self) -> bool:
         """ return True if this chat is a protected chat.
 
         :returns: True if chat is protected, False otherwise.
         """
         return lib.dc_chat_is_protected(self._dc_chat)
 
-    def get_name(self):
+    def get_name(self) -> Optional[str]:
         """ return name of this chat.
 
         :returns: unicode name
         """
         return from_dc_charpointer(lib.dc_chat_get_name(self._dc_chat))
 
-    def set_name(self, name):
+    def set_name(self, name: str) -> bool:
         """ set name of this chat.
 
         :param name: as a unicode string.
-        :returns: None
+        :returns: True on success, False otherwise
         """
         name = as_dc_charpointer(name)
-        return lib.dc_set_chat_name(self.account._dc_context, self.id, name)
+        return bool(lib.dc_set_chat_name(self.account._dc_context, self.id, name))
 
-    def mute(self, duration=None):
+    def mute(self, duration: Optional[int] = None) -> None:
         """ mutes the chat
 
         :param duration: Number of seconds to mute the chat for. None to mute until unmuted again.
@@ -135,7 +136,7 @@ class Chat(object):
         if not bool(ret):
             raise ValueError("Call to dc_set_chat_mute_duration failed")
 
-    def unmute(self):
+    def unmute(self) -> None:
         """ unmutes the chat
 
         :returns: None
@@ -144,7 +145,7 @@ class Chat(object):
         if not bool(ret):
             raise ValueError("Failed to unmute chat")
 
-    def get_mute_duration(self):
+    def get_mute_duration(self) -> int:
         """ Returns the number of seconds until the mute of this chat is lifted.
 
         :param duration:
@@ -152,37 +153,37 @@ class Chat(object):
         """
         return lib.dc_chat_get_remaining_mute_duration(self._dc_chat)
 
-    def get_ephemeral_timer(self):
+    def get_ephemeral_timer(self) -> int:
         """ get ephemeral timer.
 
         :returns: ephemeral timer value in seconds
         """
         return lib.dc_get_chat_ephemeral_timer(self.account._dc_context, self.id)
 
-    def set_ephemeral_timer(self, timer):
+    def set_ephemeral_timer(self, timer: int) -> bool:
         """ set ephemeral timer.
 
         :param: timer value in seconds
 
-        :returns: None
+        :returns: True on success, False otherwise
         """
-        return lib.dc_set_chat_ephemeral_timer(self.account._dc_context, self.id, timer)
+        return bool(lib.dc_set_chat_ephemeral_timer(self.account._dc_context, self.id, timer))
 
-    def get_type(self):
+    def get_type(self) -> int:
         """ (deprecated) return type of this chat.
 
         :returns: one of const.DC_CHAT_TYPE_*
         """
         return lib.dc_chat_get_type(self._dc_chat)
 
-    def get_encryption_info(self):
+    def get_encryption_info(self) -> Optional[str]:
         """Return encryption info for this chat.
 
         :returns: a string with encryption preferences of all chat members"""
         res = lib.dc_get_chat_encrinfo(self.account._dc_context, self.id)
         return from_dc_charpointer(res)
 
-    def get_join_qr(self):
+    def get_join_qr(self) -> Optional[str]:
         """ get/create Join-Group QR Code as ascii-string.
 
         this string needs to be transferred to another DC account
@@ -194,7 +195,7 @@ class Chat(object):
 
     # ------  chat messaging API ------------------------------
 
-    def send_msg(self, msg):
+    def send_msg(self, msg: Message) -> Message:
         """send a message by using a ready Message object.
 
         :param msg: a :class:`deltachat.message.Message` instance
@@ -512,8 +513,9 @@ class Chat(object):
                 latitude=lib.dc_array_get_latitude(dc_array, i),
                 longitude=lib.dc_array_get_longitude(dc_array, i),
                 accuracy=lib.dc_array_get_accuracy(dc_array, i),
-                timestamp=datetime.utcfromtimestamp(
-                    lib.dc_array_get_timestamp(dc_array, i)
+                timestamp=datetime.fromtimestamp(
+                    lib.dc_array_get_timestamp(dc_array, i),
+                    timezone.utc
                 ),
                 marker=from_dc_charpointer(lib.dc_array_get_marker(dc_array, i)),
             )

python/src/deltachat/const.py

@@ -1,7 +1,13 @@
+from typing import Any, List
+
 from .capi import lib
 
 
-for name in dir(lib):
+def __getattr__(name: str) -> Any:
     if name.startswith("DC_"):
-        globals()[name] = getattr(lib, name)
-del name
+        return getattr(lib, name)
+    return globals()[name]
+
+
+def __dir__() -> List[str]:
+    return sorted(name for name in dir(lib) if name.startswith("DC_"))

python/src/deltachat/contact.py

@@ -1,10 +1,12 @@
 """ Contact object. """
 
-from . import props
-from .cutil import from_dc_charpointer
-from .capi import lib, ffi
+from datetime import date, datetime, timezone
+from typing import Optional
+
+from . import const, props
+from .capi import ffi, lib
 from .chat import Chat
-from . import const
+from .cutil import from_dc_charpointer, from_optional_dc_charpointer
 
 
 class Contact(object):
@@ -35,18 +37,25 @@ class Contact(object):
         )
 
     @props.with_doc
-    def addr(self):
+    def addr(self) -> str:
         """ normalized e-mail address for this account. """
         return from_dc_charpointer(lib.dc_contact_get_addr(self._dc_contact))
 
     @props.with_doc
-    def name(self):
+    def name(self) -> str:
         """ display name for this contact. """
         return from_dc_charpointer(lib.dc_contact_get_display_name(self._dc_contact))
 
     # deprecated alias
     display_name = name
 
+    @props.with_doc
+    def last_seen(self) -> date:
+        """Last seen timestamp."""
+        return datetime.fromtimestamp(
+            lib.dc_contact_get_last_seen(self._dc_contact), timezone.utc
+        )
+
     def is_blocked(self):
         """ Return True if the contact is blocked. """
         return lib.dc_contact_is_blocked(self._dc_contact)
@@ -67,15 +76,13 @@ class Contact(object):
         """ Return True if the contact is verified. """
         return lib.dc_contact_is_verified(self._dc_contact)
 
-    def get_profile_image(self):
+    def get_profile_image(self) -> Optional[str]:
         """Get contact profile image.
 
         :returns: path to profile image, None if no profile image exists.
         """
         dc_res = lib.dc_contact_get_profile_image(self._dc_contact)
-        if dc_res == ffi.NULL:
-            return None
-        return from_dc_charpointer(dc_res)
+        return from_optional_dc_charpointer(dc_res)
 
     @property
     def status(self):

python/src/deltachat/cutil.py

@@ -1,6 +1,9 @@
 from .capi import lib
 from .capi import ffi
-from datetime import datetime
+from datetime import datetime, timezone
+from typing import Optional, TypeVar, Generator, Callable
+
+T = TypeVar('T')
 
 
 def as_dc_charpointer(obj):
@@ -11,21 +14,28 @@ def as_dc_charpointer(obj):
     return obj
 
 
-def iter_array(dc_array_t, constructor):
+def iter_array(dc_array_t, constructor: Callable[[int], T]) -> Generator[T, None, None]:
     for i in range(0, lib.dc_array_get_cnt(dc_array_t)):
         yield constructor(lib.dc_array_get_id(dc_array_t, i))
 
 
-def from_dc_charpointer(obj):
+def from_dc_charpointer(obj) -> str:
     if obj != ffi.NULL:
         return ffi.string(ffi.gc(obj, lib.dc_str_unref)).decode("utf8")
+    raise ValueError
+
+
+def from_optional_dc_charpointer(obj) -> Optional[str]:
+    if obj != ffi.NULL:
+        return ffi.string(ffi.gc(obj, lib.dc_str_unref)).decode("utf8")
+    return None
 
 
 class DCLot:
-    def __init__(self, dc_lot):
+    def __init__(self, dc_lot) -> None:
         self._dc_lot = dc_lot
 
-    def id(self):
+    def id(self) -> int:
         return lib.dc_lot_get_id(self._dc_lot)
 
     def state(self):
@@ -44,4 +54,4 @@ class DCLot:
         ts = lib.dc_lot_get_timestamp(self._dc_lot)
         if ts == 0:
             return None
-        return datetime.utcfromtimestamp(ts)
+        return datetime.fromtimestamp(ts, timezone.utc)

python/src/deltachat/direct_imap.py

@@ -11,7 +11,7 @@ from imapclient import IMAPClient
 from imapclient.exceptions import IMAPClientError
 import imaplib
 import deltachat
-from deltachat import const
+from deltachat import const, Account
 
 
 SEEN = b'\\Seen'
@@ -62,7 +62,7 @@ def dc_account_after_shutdown(account):
 
 
 class DirectImap:
-    def __init__(self, account):
+    def __init__(self, account: Account) -> None:
         self.account = account
         self.logid = account.get_config("displayname") or id(account)
         self._idling = False

python/src/deltachat/events.py

@@ -9,11 +9,11 @@ from .hookspec import account_hookimpl
 from contextlib import contextmanager
 from .capi import ffi, lib
 from .message import map_system_message
-from .cutil import from_dc_charpointer
+from .cutil import from_optional_dc_charpointer
 
 
 class FFIEvent:
-    def __init__(self, name, data1, data2):
+    def __init__(self, name: str, data1, data2):
         self.name = name
         self.data1 = data1
         self.data2 = data2
@@ -29,18 +29,18 @@ class FFIEventLogger:
     # to prevent garbled logging
     _loglock = threading.RLock()
 
-    def __init__(self, account):
+    def __init__(self, account) -> None:
         self.account = account
         self.logid = self.account.get_config("displayname")
         self.init_time = time.time()
 
     @account_hookimpl
-    def ac_process_ffi_event(self, ffi_event):
+    def ac_process_ffi_event(self, ffi_event: FFIEvent) -> None:
         self.account.log(str(ffi_event))
 
     @account_hookimpl
     def ac_log_line(self, message):
-        t = threading.currentThread()
+        t = threading.current_thread()
         tname = getattr(t, "name", t)
         if tname == "MainThread":
             tname = "MAIN"
@@ -69,7 +69,7 @@ class FFIEventTracker:
         self._event_queue = Queue()
 
     @account_hookimpl
-    def ac_process_ffi_event(self, ffi_event):
+    def ac_process_ffi_event(self, ffi_event: FFIEvent):
         self._event_queue.put(ffi_event)
 
     def set_timeout(self, timeout):
@@ -96,7 +96,7 @@ class FFIEventTracker:
             if rex.match(ev.name):
                 return ev
 
-    def get_info_contains(self, regex):
+    def get_info_contains(self, regex: str) -> FFIEvent:
         rex = re.compile(regex)
         while 1:
             ev = self.get_matching("DC_EVENT_INFO")
@@ -176,6 +176,7 @@ class FFIEventTracker:
         ev = self.get_matching("DC_EVENT_MSGS_CHANGED")
         if ev.data2 > 0:
             return self.account.get_message_by_id(ev.data2)
+        return None
 
     def wait_msg_delivered(self, msg):
         ev = self.get_matching("DC_EVENT_MSG_DELIVERED")
@@ -189,10 +190,10 @@ class EventThread(threading.Thread):
 
     With each Account init this callback thread is started.
     """
-    def __init__(self, account):
+    def __init__(self, account) -> None:
         self.account = account
         super(EventThread, self).__init__(name="events")
-        self.setDaemon(True)
+        self.daemon = True
         self._marked_for_shutdown = False
         self.start()
 
@@ -202,17 +203,17 @@ class EventThread(threading.Thread):
         yield
         self.account.log(message + " FINISHED")
 
-    def mark_shutdown(self):
+    def mark_shutdown(self) -> None:
         self._marked_for_shutdown = True
 
-    def wait(self, timeout=None):
+    def wait(self, timeout=None) -> None:
         if self == threading.current_thread():
             # we are in the callback thread and thus cannot
             # wait for the thread-loop to finish.
             return
         self.join(timeout=timeout)
 
-    def run(self):
+    def run(self) -> None:
         """ get and run events until shutdown. """
         with self.log_execution("EVENT THREAD"):
             self._inner_run()
@@ -234,7 +235,7 @@ class EventThread(threading.Thread):
             # function which provides us signature info of an event call
             evt_name = deltachat.get_dc_event_name(evt)
             if lib.dc_event_has_string_data(evt):
-                data2 = from_dc_charpointer(lib.dc_event_get_data2_str(event))
+                data2 = from_optional_dc_charpointer(lib.dc_event_get_data2_str(event))
             else:
                 data2 = lib.dc_event_get_data2_int(event)
 
@@ -250,7 +251,7 @@ class EventThread(threading.Thread):
                 if self.account._dc_context is not None:
                     raise
 
-    def _map_ffi_event(self, ffi_event):
+    def _map_ffi_event(self, ffi_event: FFIEvent):
         name = ffi_event.name
         account = self.account
         if name == "DC_EVENT_CONFIGURE_PROGRESS":

python/src/deltachat/message.py

@@ -3,10 +3,11 @@
 import os
 import re
 from . import props
-from .cutil import from_dc_charpointer, as_dc_charpointer
+from .cutil import from_dc_charpointer, from_optional_dc_charpointer, as_dc_charpointer
 from .capi import lib, ffi
 from . import const
-from datetime import datetime
+from datetime import datetime, timezone
+from typing import Optional
 
 
 class Message(object):
@@ -75,7 +76,7 @@ class Message(object):
         return lib.dc_msg_get_id(self._dc_msg)
 
     @props.with_doc
-    def text(self):
+    def text(self) -> str:
         """unicode text of this messages (might be empty if not a text message). """
         return from_dc_charpointer(lib.dc_msg_get_text(self._dc_msg))
 
@@ -84,9 +85,9 @@ class Message(object):
         lib.dc_msg_set_text(self._dc_msg, as_dc_charpointer(text))
 
     @props.with_doc
-    def html(self):
+    def html(self) -> str:
         """html text of this messages (might be empty if not an html message). """
-        return from_dc_charpointer(
+        return from_optional_dc_charpointer(
             lib.dc_get_msg_html(self.account._dc_context, self.id)) or ""
 
     def has_html(self):
@@ -113,12 +114,13 @@ class Message(object):
         lib.dc_msg_set_file(self._dc_msg, as_dc_charpointer(path), mtype)
 
     @props.with_doc
-    def basename(self):
+    def basename(self) -> str:
         """basename of the attachment if it exists, otherwise empty string. """
+        # FIXME, it does not return basename
         return from_dc_charpointer(lib.dc_msg_get_filename(self._dc_msg))
 
     @props.with_doc
-    def filemime(self):
+    def filemime(self) -> str:
         """mime type of the file (if it exists)"""
         return from_dc_charpointer(lib.dc_msg_get_filemime(self._dc_msg))
 
@@ -130,7 +132,7 @@ class Message(object):
         """ return True if this message is a setup message. """
         return lib.dc_msg_is_setupmessage(self._dc_msg)
 
-    def get_setupcodebegin(self):
+    def get_setupcodebegin(self) -> str:
         """ return the first characters of a setup code in a setup message. """
         return from_dc_charpointer(lib.dc_msg_get_setupcodebegin(self._dc_msg))
 
@@ -146,7 +148,7 @@ class Message(object):
         """ return True if this message was forwarded. """
         return bool(lib.dc_msg_is_forwarded(self._dc_msg))
 
-    def get_message_info(self):
+    def get_message_info(self) -> str:
         """ Return informational text for a single message.
 
         The text is multiline and may contain eg. the raw text of the message.
@@ -170,7 +172,7 @@ class Message(object):
         :returns: naive datetime.datetime() object.
         """
         ts = lib.dc_msg_get_timestamp(self._dc_msg)
-        return datetime.utcfromtimestamp(ts)
+        return datetime.fromtimestamp(ts, timezone.utc)
 
     @props.with_doc
     def time_received(self):
@@ -180,7 +182,7 @@ class Message(object):
         """
         ts = lib.dc_msg_get_received_timestamp(self._dc_msg)
         if ts:
-            return datetime.utcfromtimestamp(ts)
+            return datetime.fromtimestamp(ts, timezone.utc)
 
     @props.with_doc
     def ephemeral_timer(self):
@@ -200,14 +202,14 @@ class Message(object):
         """
         ts = lib.dc_msg_get_ephemeral_timestamp(self._dc_msg)
         if ts:
-            return datetime.utcfromtimestamp(ts)
+            return datetime.fromtimestamp(ts, timezone.utc)
 
     @property
-    def quoted_text(self):
+    def quoted_text(self) -> Optional[str]:
         """Text inside the quote
 
         :returns: Quoted text"""
-        return from_dc_charpointer(lib.dc_msg_get_quoted_text(self._dc_msg))
+        return from_optional_dc_charpointer(lib.dc_msg_get_quoted_text(self._dc_msg))
 
     @property
     def quote(self):
@@ -223,6 +225,10 @@ class Message(object):
         """Quote setter"""
         lib.dc_msg_set_quote(self._dc_msg, quoted_message._dc_msg)
 
+    def force_plaintext(self) -> None:
+        """Force the message to be sent in plain text."""
+        lib.dc_msg_force_plaintext(self._dc_msg)
+
     def get_mime_headers(self):
         """ return mime-header object for an incoming message.
 
@@ -240,9 +246,9 @@ class Message(object):
             return email.message_from_string(s)
 
     @property
-    def error(self):
+    def error(self) -> Optional[str]:
         """Error message"""
-        return from_dc_charpointer(lib.dc_msg_get_error(self._dc_msg))
+        return from_optional_dc_charpointer(lib.dc_msg_get_error(self._dc_msg))
 
     @property
     def chat(self):
@@ -255,12 +261,12 @@ class Message(object):
         return Chat(self.account, chat_id)
 
     @props.with_doc
-    def override_sender_name(self):
+    def override_sender_name(self) -> Optional[str]:
         """the name that should be shown over the message instead of the contact display name.
 
         Usually used to impersonate someone else.
         """
-        return from_dc_charpointer(
+        return from_optional_dc_charpointer(
             lib.dc_msg_get_override_sender_name(self._dc_msg))
 
     def set_override_sender_name(self, name):

python/src/deltachat/provider.py

@@ -14,7 +14,7 @@ class Provider(object):
     :param domain: The email to get the provider info for.
     """
 
-    def __init__(self, account, addr):
+    def __init__(self, account, addr) -> None:
         provider = ffi.gc(
             lib.dc_provider_new_from_email(account._dc_context, as_dc_charpointer(addr)),
             lib.dc_provider_unref,
@@ -24,19 +24,19 @@ class Provider(object):
         self._provider = provider
 
     @property
-    def overview_page(self):
+    def overview_page(self) -> str:
         """URL to the overview page of the provider on providers.delta.chat."""
         return from_dc_charpointer(
             lib.dc_provider_get_overview_page(self._provider))
 
     @property
-    def get_before_login_hints(self):
+    def get_before_login_hints(self) -> str:
         """Should be shown to the user on login."""
         return from_dc_charpointer(
-            lib.dc_provider_get_before_login_hints(self._provider))
+            lib.dc_provider_get_before_login_hint(self._provider))
 
     @property
-    def status(self):
+    def status(self) -> int:
         """The status of the provider information.
 
         This is one of the

python/src/deltachat/testplugin.py

@@ -9,6 +9,7 @@ import fnmatch
 import time
 import weakref
 import tempfile
+from typing import List, Dict, Callable
 
 import pytest
 import requests
@@ -126,7 +127,7 @@ def pytest_report_header(config, startdir):
 
 
 class SessionLiveConfigFromFile:
-    def __init__(self, fn):
+    def __init__(self, fn) -> None:
         self.fn = fn
         self.configlist = []
         for line in open(fn):
@@ -137,19 +138,21 @@ class SessionLiveConfigFromFile:
                     d[name] = value
                 self.configlist.append(d)
 
-    def get(self, index):
+    def get(self, index: int):
         return self.configlist[index]
 
-    def exists(self):
+    def exists(self) -> bool:
         return bool(self.configlist)
 
 
 class SessionLiveConfigFromURL:
-    def __init__(self, url):
+    configlist: List[Dict[str, str]]
+
+    def __init__(self, url: str) -> None:
         self.configlist = []
         self.url = url
 
-    def get(self, index):
+    def get(self, index: int):
         try:
             return self.configlist[index]
         except IndexError:
@@ -162,7 +165,7 @@ class SessionLiveConfigFromURL:
             self.configlist.append(config)
             return config
 
-    def exists(self):
+    def exists(self) -> bool:
         return bool(self.configlist)
 
 
@@ -179,7 +182,7 @@ def session_liveconfig(request):
 @pytest.fixture
 def data(request):
     class Data:
-        def __init__(self):
+        def __init__(self) -> None:
             # trying to find test data heuristically
             # because we are run from a dev-setup with pytest direct,
             # through tox, and then maybe also from deltachat-binding
@@ -210,7 +213,10 @@ def data(request):
 def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
 
     class AccountMaker:
-        def __init__(self):
+        _finalizers: List[Callable[[], None]]
+        _accounts: List[Account]
+
+        def __init__(self) -> None:
             self.live_count = 0
             self.offline_count = 0
             self._finalizers = []
@@ -297,21 +303,20 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
                 self._preconfigure_key(ac, configdict['addr'])
             return ac, dict(configdict)
 
-        def get_online_configuring_account(self, mvbox=False, sentbox=False, move=False,
+        def get_online_configuring_account(self, sentbox=False, move=False,
                                            pre_generated_key=True, quiet=False, config={}):
             ac, configdict = self.get_online_config(
                 pre_generated_key=pre_generated_key, quiet=quiet)
             configdict.update(config)
-            configdict["mvbox_watch"] = str(int(mvbox))
             configdict["mvbox_move"] = str(int(move))
             configdict["sentbox_watch"] = str(int(sentbox))
             ac.update_config(configdict)
             ac._configtracker = ac.configure()
             return ac
 
-        def get_one_online_account(self, pre_generated_key=True, mvbox=False, move=False):
+        def get_one_online_account(self, pre_generated_key=True, move=False):
             ac1 = self.get_online_configuring_account(
-                pre_generated_key=pre_generated_key, mvbox=mvbox, move=move)
+                pre_generated_key=pre_generated_key, move=move)
             self.wait_configure_and_start_io([ac1])
             return ac1
 
@@ -330,7 +335,7 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
             return accounts
 
         def clone_online_account(self, account, pre_generated_key=True):
-            """ Clones addr, mail_pw, mvbox_watch, mvbox_move, sentbox_watch and the
+            """ Clones addr, mail_pw, mvbox_move, sentbox_watch and the
             direct_imap object of an online account. This simulates the user setting
             up a new device without importing a backup.
 
@@ -345,7 +350,6 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
             ac.update_config(dict(
                 addr=account.get_config("addr"),
                 mail_pw=account.get_config("mail_pw"),
-                mvbox_watch=account.get_config("mvbox_watch"),
                 mvbox_move=account.get_config("mvbox_move"),
                 sentbox_watch=account.get_config("sentbox_watch"),
             ))
@@ -423,7 +427,7 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
                         pass
                     imap.dump_imap_structures(tmpdir, logfile=logfile)
 
-        def get_accepted_chat(self, ac1, ac2):
+        def get_accepted_chat(self, ac1: Account, ac2: Account):
             ac2.create_chat(ac1)
             return ac1.create_chat(ac2)
 
@@ -451,7 +455,9 @@ def acfactory(pytestconfig, tmpdir, request, session_liveconfig, data):
 
 
 class BotProcess:
-    def __init__(self, popen, bot_cfg):
+    stdout_queue: queue.Queue
+
+    def __init__(self, popen, bot_cfg) -> None:
         self.popen = popen
         self.addr = bot_cfg["addr"]
 
@@ -459,10 +465,10 @@ class BotProcess:
         # the (unicode) lines available for readers through a queue.
         self.stdout_queue = queue.Queue()
         self.stdout_thread = t = threading.Thread(target=self._run_stdout_thread, name="bot-stdout-thread")
-        t.setDaemon(1)
+        t.daemon = True
         t.start()
 
-    def _run_stdout_thread(self):
+    def _run_stdout_thread(self) -> None:
         try:
             while 1:
                 line = self.popen.stdout.readline()
@@ -474,10 +480,10 @@ class BotProcess:
         finally:
             self.stdout_queue.put(None)
 
-    def kill(self):
+    def kill(self) -> None:
         self.popen.kill()
 
-    def wait(self, timeout=30):
+    def wait(self, timeout=30) -> None:
         self.popen.wait(timeout=timeout)
 
     def fnmatch_lines(self, pattern_lines):
@@ -509,14 +515,14 @@ def tmp_db_path(tmpdir):
 @pytest.fixture
 def lp():
     class Printer:
-        def sec(self, msg):
+        def sec(self, msg: str) -> None:
             print()
             print("=" * 10, msg, "=" * 10)
 
-        def step(self, msg):
+        def step(self, msg: str) -> None:
             print("-" * 5, "step " + msg, "-" * 5)
 
-        def indent(self, msg):
+        def indent(self, msg: str) -> None:
             print("  " + msg)
 
     return Printer()

python/src/deltachat/tracker.py

@@ -90,11 +90,11 @@ class ConfigureTracker:
             if data1 is None or evdata == data1:
                 break
 
-    def wait_finish(self):
+    def wait_finish(self, timeout=None):
         """ wait until configure is completed.
 
         Raise Exception if Configure failed
         """
-        if not self._configure_events.get():
+        if not self._configure_events.get(timeout=timeout):
             content = "\n".join(map(str, self._ffi_events))
             raise ConfigureFailed(content)

python/tests/test_account.py

@@ -10,7 +10,7 @@ from deltachat.tracker import ImexTracker
 from deltachat.hookspec import account_hookimpl
 from deltachat.capi import ffi, lib
 from deltachat.cutil import iter_array
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 
 
 @pytest.mark.parametrize("msgtext,res", [
@@ -41,8 +41,8 @@ class TestOfflineAccountBasic:
     def test_wrong_db(self, tmpdir):
         p = tmpdir.join("hello.db")
         p.write("123")
-        with pytest.raises(ValueError):
-            Account(p.strpath)
+        account = Account(p.strpath)
+        assert not account.is_open()
 
     def test_os_name(self, tmpdir):
         p = tmpdir.join("hello.db")
@@ -57,7 +57,7 @@ class TestOfflineAccountBasic:
         alice_public = data.read_path("key/alice-public.asc")
         alice_secret = data.read_path("key/alice-secret.asc")
         assert alice_public and alice_secret
-        ac._preconfigure_keypair("alice@example.com", alice_public, alice_secret)
+        ac._preconfigure_keypair("alice@example.org", alice_public, alice_secret)
 
     def test_getinfo(self, acfactory):
         ac1 = acfactory.get_unconfigured_account()
@@ -265,23 +265,23 @@ class TestOfflineChat:
         assert d["draft"] == "" if chat.get_draft() is None else chat.get_draft()
 
     def test_group_chat_creation_with_translation(self, ac1):
-        ac1.set_stock_translation(const.DC_STR_NEWGROUPDRAFT, "xyz %1$s")
+        ac1.set_stock_translation(const.DC_STR_MSGGRPNAME, "abc %1$s xyz %2$s")
         ac1._evtracker.consume_events()
         with pytest.raises(ValueError):
-            ac1.set_stock_translation(const.DC_STR_NEWGROUPDRAFT, "xyz %2$s")
+            ac1.set_stock_translation(const.DC_STR_FILE, "xyz %1$s")
+        ac1._evtracker.get_matching("DC_EVENT_WARNING")
+        with pytest.raises(ValueError):
+            ac1.set_stock_translation(const.DC_STR_CONTACT_NOT_VERIFIED, "xyz %2$s")
         ac1._evtracker.get_matching("DC_EVENT_WARNING")
         with pytest.raises(ValueError):
             ac1.set_stock_translation(500, "xyz %1$s")
         ac1._evtracker.get_matching("DC_EVENT_WARNING")
-        contact1 = ac1.create_contact("some1@example.org", name="some1")
-        contact2 = ac1.create_contact("some2@example.org", name="some2")
-        chat = ac1.create_group_chat(name="title1", contacts=[contact1, contact2])
-        assert chat.get_name() == "title1"
-        assert contact1 in chat.get_contacts()
-        assert contact2 in chat.get_contacts()
-        assert not chat.is_promoted()
-        msg = chat.get_draft()
-        assert msg.text == "xyz title1"
+        chat = ac1.create_group_chat(name="homework", contacts=[])
+        assert chat.get_name() == "homework"
+        chat.send_text("Now we have a group for homework")
+        assert chat.is_promoted()
+        chat.set_name("Homework")
+        assert chat.get_messages()[-1].text == "abc homework xyz Homework by me."
 
     @pytest.mark.parametrize("verified", [True, False])
     def test_group_chat_qr(self, acfactory, ac1, verified):
@@ -447,7 +447,7 @@ class TestOfflineChat:
         contact1.create_chat().send_text("hello")
 
     def test_chat_message_distinctions(self, ac1, chat1):
-        past1s = datetime.utcnow() - timedelta(seconds=1)
+        past1s = datetime.now(timezone.utc) - timedelta(seconds=1)
         msg = chat1.send_text("msg1")
         ts = msg.time_sent
         assert msg.time_received is None
@@ -737,7 +737,6 @@ class TestOnlineAccount:
         # make sure we are not sending message to ourselves
         assert self_addr not in ev.data2
         assert other_addr in ev.data2
-        ev = ac1._evtracker.get_matching("DC_EVENT_DELETED_BLOB_FILE")
 
         lp.sec("ac1: setting bcc_self=1")
         ac1.set_config("bcc_self", "1")
@@ -753,7 +752,6 @@ class TestOnlineAccount:
         # now make sure we are sending message to ourselves too
         assert self_addr in ev.data2
         assert other_addr in ev.data2
-        ev = ac1._evtracker.get_matching("DC_EVENT_DELETED_BLOB_FILE")
         assert ac1.direct_imap.idle_wait_for_seen()
 
         # Second client receives only second message, but not the first
@@ -860,7 +858,7 @@ class TestOnlineAccount:
 
     def test_mvbox_sentbox_threads(self, acfactory, lp):
         lp.sec("ac1: start with mvbox thread")
-        ac1 = acfactory.get_online_configuring_account(mvbox=True, move=True, sentbox=True)
+        ac1 = acfactory.get_online_configuring_account(move=True, sentbox=True)
 
         lp.sec("ac2: start without mvbox/sentbox threads")
         ac2 = acfactory.get_online_configuring_account()
@@ -874,16 +872,20 @@ class TestOnlineAccount:
 
     def test_move_works(self, acfactory):
         ac1 = acfactory.get_online_configuring_account()
-        ac2 = acfactory.get_online_configuring_account(mvbox=True, move=True)
+        ac2 = acfactory.get_online_configuring_account(move=True)
         acfactory.wait_configure_and_start_io()
         chat = acfactory.get_accepted_chat(ac1, ac2)
         chat.send_text("message1")
-        ev = ac2._evtracker.get_matching("DC_EVENT_INCOMING_MSG")
-        assert ev.data2 > const.DC_CHAT_ID_LAST_SPECIAL
+
+        # Message is moved to the movebox
         ac2._evtracker.get_matching("DC_EVENT_IMAP_MESSAGE_MOVED")
 
+        # Message is downloaded
+        ev = ac2._evtracker.get_matching("DC_EVENT_INCOMING_MSG")
+        assert ev.data2 > const.DC_CHAT_ID_LAST_SPECIAL
+
     def test_move_works_on_self_sent(self, acfactory):
-        ac1 = acfactory.get_online_configuring_account(mvbox=True, move=True)
+        ac1 = acfactory.get_online_configuring_account(move=True)
         ac2 = acfactory.get_online_configuring_account()
         acfactory.wait_configure_and_start_io()
         ac1.set_config("bcc_self", "1")
@@ -953,7 +955,7 @@ class TestOnlineAccount:
         assert msg_in.is_forwarded()
 
     def test_send_self_message(self, acfactory, lp):
-        ac1 = acfactory.get_one_online_account(mvbox=True, move=True)
+        ac1 = acfactory.get_one_online_account(move=True)
         lp.sec("ac1: create self chat")
         chat = ac1.get_self_contact().create_chat()
         chat.send_text("hello")
@@ -973,7 +975,7 @@ class TestOnlineAccount:
         ac1._evtracker.wait_msg_delivered(msg1)
 
         lp.sec("wait for ac2 to receive message")
-        msg2 = ac2._evtracker.wait_next_messages_changed()
+        msg2 = ac2._evtracker.wait_next_incoming_message()
         assert msg2.text == "message1"
         assert not msg2.is_forwarded()
         assert msg2.get_sender_contact().display_name == ac1.get_config("displayname")
@@ -983,7 +985,8 @@ class TestOnlineAccount:
         assert msg2 in chat2.get_messages()
         assert chat2.is_contact_request()
         assert chat2.count_fresh_messages() == 1
-        assert msg2.time_received >= msg1.time_sent
+        # Like it or not, this assert is flaky
+        # assert msg2.time_received >= msg1.time_sent
 
         lp.sec("create new chat with contact and verify it's proper")
         chat2b = msg2.create_chat()
@@ -1034,31 +1037,70 @@ class TestOnlineAccount:
 
     def test_moved_markseen(self, acfactory, lp):
         """Test that message already moved to DeltaChat folder is marked as seen."""
-        ac1 = acfactory.get_online_configuring_account(mvbox=True, config={"inbox_watch": "0"})
-        ac2 = acfactory.get_online_configuring_account()
+        ac1 = acfactory.get_online_configuring_account()
+        ac2 = acfactory.get_online_configuring_account(move=True)
         acfactory.wait_configure_and_start_io([ac1, ac2])
-        ac1.set_config("bcc_self", "1")
 
-        ac1.direct_imap.idle_start()
+        ac2.stop_io()
+        ac2.direct_imap.idle_start()
+
         ac1.create_chat(ac2).send_text("Hello!")
-        ac1.direct_imap.idle_check(terminate=True)
-        ac1.stop_io()
+
+        # Wait for the message to arrive.
+        ac2.direct_imap.idle_check(terminate=True)
 
         # Emulate moving of the message to DeltaChat folder by Sieve rule.
         # mailcow server contains this rule by default.
-        ac1.direct_imap.conn.move(["*"], "DeltaChat")
+        ac2.direct_imap.conn.move(["*"], "DeltaChat")
 
-        ac1.direct_imap.select_folder("DeltaChat")
-        ac1.direct_imap.idle_start()
-        ac1.start_io()
-        ac1.direct_imap.idle_wait_for_seen()
-        ac1.direct_imap.idle_done()
+        ac2.direct_imap.select_folder("DeltaChat")
+        ac2.direct_imap.idle_start()
+        ac2.start_io()
+        msg = ac2._evtracker.wait_next_incoming_message()
 
-        fetch = list(ac1.direct_imap.conn.fetch("*", b'FLAGS').values())
+        # Accept the contact request.
+        msg.chat.accept()
+        ac2.mark_seen_messages([msg])
+        ac2.direct_imap.idle_wait_for_seen()
+        ac2.direct_imap.idle_done()
+
+        fetch = list(ac2.direct_imap.conn.fetch("*", b'FLAGS').values())
         flags = fetch[-1][b'FLAGS']
         is_seen = b'\\Seen' in flags
         assert is_seen
 
+    def test_multidevice_sync_seen(self, acfactory, lp):
+        """Test that message marked as seen on one device is marked as seen on another."""
+        ac1 = acfactory.get_online_configuring_account()
+        ac2 = acfactory.get_online_configuring_account()
+        ac1_clone = acfactory.clone_online_account(ac1)
+        acfactory.wait_configure_and_start_io()
+
+        ac1.set_config("bcc_self", "1")
+        ac1_clone.set_config("bcc_self", "1")
+
+        ac1_chat = ac1.create_chat(ac2)
+        ac1_clone_chat = ac1_clone.create_chat(ac2)
+        ac2_chat = ac2.create_chat(ac1)
+
+        lp.sec("Send a message from ac2 to ac1 and check that it's 'fresh'")
+        ac2_chat.send_text("Hi")
+        ac1_message = ac1._evtracker.wait_next_incoming_message()
+        ac1_clone_message = ac1_clone._evtracker.wait_next_incoming_message()
+        assert ac1_chat.count_fresh_messages() == 1
+        assert ac1_clone_chat.count_fresh_messages() == 1
+        assert ac1_message.is_in_fresh
+        assert ac1_clone_message.is_in_fresh
+
+        lp.sec("ac1 marks message as seen on the first device")
+        ac1.mark_seen_messages([ac1_message])
+        assert ac1_message.is_in_seen
+
+        lp.sec("ac1 clone detects that message is marked as seen")
+        ev = ac1_clone._evtracker.get_matching("DC_EVENT_MSGS_NOTICED")
+        assert ev.data1 == ac1_clone_chat.id
+        assert ac1_clone_message.is_in_seen
+
     def test_message_override_sender_name(self, acfactory, lp):
         ac1, ac2 = acfactory.get_two_online_accounts()
         chat = acfactory.get_accepted_chat(ac1, ac2)
@@ -1095,8 +1137,8 @@ class TestOnlineAccount:
     def test_markseen_message_and_mdn(self, acfactory, mvbox_move):
         # Please only change this test if you are very sure that it will still catch the issues it catches now.
         # We had so many problems with markseen, if in doubt, rather create another test, it can't harm.
-        ac1 = acfactory.get_online_configuring_account(move=mvbox_move, mvbox=mvbox_move)
-        ac2 = acfactory.get_online_configuring_account(move=mvbox_move, mvbox=mvbox_move)
+        ac1 = acfactory.get_online_configuring_account(move=mvbox_move)
+        ac2 = acfactory.get_online_configuring_account(move=mvbox_move)
 
         acfactory.wait_configure_and_start_io()
         # Do not send BCC to self, we only want to test MDN on ac1.
@@ -1125,7 +1167,7 @@ class TestOnlineAccount:
         group1.add_contact(ac2)
         group1.send_text("hello")
 
-        msg2 = ac2._evtracker.wait_next_messages_changed()
+        msg2 = ac2._evtracker.wait_next_incoming_message()
         group2 = msg2.create_chat()
         assert group2.get_name() == group1.get_name()
 
@@ -1142,7 +1184,7 @@ class TestOnlineAccount:
         assert not msg_reply1.chat.is_group()
         assert msg_reply1.chat.id == private_chat1.id
 
-    def test_mdn_asymetric(self, acfactory, lp):
+    def test_mdn_asymmetric(self, acfactory, lp):
         ac1, ac2 = acfactory.get_two_online_accounts(move=True)
 
         lp.sec("ac1: create chat with ac2")
@@ -1166,6 +1208,9 @@ class TestOnlineAccount:
 
         assert len(msg.chat.get_messages()) == 1
 
+        ac1.direct_imap.select_config_folder("mvbox")
+        ac1.direct_imap.idle_start()
+
         lp.sec("ac2: mark incoming message as seen")
         ac2.mark_seen_messages([msg])
 
@@ -1175,6 +1220,9 @@ class TestOnlineAccount:
 
         assert len(chat.get_messages()) == 1
 
+        # Wait for the message to be marked as seen on IMAP.
+        assert ac1.direct_imap.idle_wait_for_seen()
+
         # MDN is received even though MDNs are already disabled
         assert msg_out.is_out_mdn_received()
 
@@ -1188,7 +1236,7 @@ class TestOnlineAccount:
         chat.send_text("message1")
 
         lp.sec("wait for ac2 to receive message")
-        msg2 = ac2._evtracker.wait_next_messages_changed()
+        msg2 = ac2._evtracker.wait_next_incoming_message()
         assert msg2.text == "message1"
 
         lp.sec("create new chat with contact and send back (encrypted) message")
@@ -1221,6 +1269,40 @@ class TestOnlineAccount:
         assert not msg.is_encrypted()
         ac1._evtracker.get_matching("DC_EVENT_SMTP_MESSAGE_SENT")
 
+    def test_gossip_optimization(self, acfactory, lp):
+        """Test that gossip timestamp is updated when someone else sends gossip,
+        so we don't have to send gossip ourselves.
+        """
+        ac1, ac2, ac3 = acfactory.get_many_online_accounts(3)
+
+        acfactory.introduce_each_other([ac1, ac2])
+        acfactory.introduce_each_other([ac2, ac3])
+
+        lp.sec("ac1 creates a group chat with ac2")
+        group_chat = ac1.create_group_chat("hello")
+        group_chat.add_contact(ac2)
+        msg = group_chat.send_text("hi")
+
+        # No Autocrypt gossip was sent yet.
+        gossiped_timestamp = msg.chat.get_summary()["gossiped_timestamp"]
+        assert gossiped_timestamp == 0
+
+        msg = ac2._evtracker.wait_next_incoming_message()
+        assert msg.is_encrypted()
+        assert msg.text == "hi"
+
+        lp.sec("ac2 adds ac3 to the group")
+        msg.chat.add_contact(ac3)
+
+        lp.sec("ac1 receives message from ac2 and updates gossip timestamp")
+        msg = ac1._evtracker.wait_next_incoming_message()
+        assert msg.is_encrypted()
+
+        # ac1 has updated the gossip timestamp even though no gossip was sent by ac1.
+        # ac1 does not need to send gossip because ac2 already did it.
+        gossiped_timestamp = msg.chat.get_summary()["gossiped_timestamp"]
+        assert gossiped_timestamp == int(msg.time_sent.timestamp())
+
     def test_gossip_encryption_preference(self, acfactory, lp):
         """Test that encryption preference of group members is gossiped to new members.
         This is a Delta Chat extension to Autocrypt 1.1.0, which Autocrypt-Gossip headers
@@ -1325,7 +1407,7 @@ class TestOnlineAccount:
         If the draft email is sent out later (i.e. moved to "Sent"), it must be shown."""
         ac1 = acfactory.get_online_configuring_account()
         ac1.set_config("show_emails", "2")
-        ac1.create_contact("alice@example.com").create_chat()
+        ac1.create_contact("alice@example.org").create_chat()
 
         acfactory.wait_configure(ac1)
         ac1.direct_imap.create_folder("Drafts")
@@ -1339,7 +1421,7 @@ class TestOnlineAccount:
         ac1.direct_imap.append("Drafts", """
             From: ac1 <{}>
             Subject: subj
-            To: alice@example.com
+            To: alice@example.org
             Message-ID: <aepiors@example.org>
             Content-Type: text/plain; charset=utf-8
 
@@ -1348,7 +1430,7 @@ class TestOnlineAccount:
         ac1.direct_imap.append("Sent", """
             From: ac1 <{}>
             Subject: subj
-            To: alice@example.com
+            To: alice@example.org
             Message-ID: <hsabaeni@example.org>
             Content-Type: text/plain; charset=utf-8
 
@@ -1379,6 +1461,35 @@ class TestOnlineAccount:
         assert msg2.text == "subj – message in Drafts that is moved to Sent later"
         assert len(msg.chat.get_messages()) == 2
 
+    def test_no_old_msg_is_fresh(self, acfactory, lp):
+        ac1 = acfactory.get_online_configuring_account()
+        ac2 = acfactory.get_online_configuring_account()
+        ac1_clone = acfactory.clone_online_account(ac1)
+        acfactory.wait_configure_and_start_io()
+
+        ac1.set_config("e2ee_enabled", "0")
+        ac1_clone.set_config("e2ee_enabled", "0")
+        ac2.set_config("e2ee_enabled", "0")
+
+        ac1_clone.set_config("bcc_self", "1")
+
+        ac1.create_chat(ac2)
+        ac1_clone.create_chat(ac2)
+
+        lp.sec("Send a first message from ac2 to ac1 and check that it's 'fresh'")
+        first_msg_id = ac2.create_chat(ac1).send_text("Hi")
+        ac1._evtracker.wait_next_incoming_message()
+        assert ac1.create_chat(ac2).count_fresh_messages() == 1
+        assert len(list(ac1.get_fresh_messages())) == 1
+
+        lp.sec("Send a message from ac1_clone to ac2 and check that ac1 marks the first message as 'noticed'")
+        ac1_clone.create_chat(ac2).send_text("Hi back")
+        ev = ac1._evtracker.get_matching("DC_EVENT_MSGS_NOTICED")
+
+        assert ev.data1 == first_msg_id.chat.id
+        assert ac1.create_chat(ac2).count_fresh_messages() == 0
+        assert len(list(ac1.get_fresh_messages())) == 0
+
     def test_prefer_encrypt(self, acfactory, lp):
         """Test quorum rule for encryption preference in 1:1 and group chat."""
         ac1, ac2, ac3 = acfactory.get_many_online_accounts(3)
@@ -1468,7 +1579,7 @@ class TestOnlineAccount:
         assert not msg1.is_encrypted()
 
         lp.sec("wait for ac2 to receive message")
-        msg2 = ac2._evtracker.wait_next_messages_changed()
+        msg2 = ac2._evtracker.wait_next_incoming_message()
         assert msg2.text == "message1"
         assert not msg2.is_encrypted()
 
@@ -1517,7 +1628,7 @@ class TestOnlineAccount:
         chat1.send_text("hi")
 
         lp.sec("ac2 receives contact request from ac1")
-        received_message = ac2._evtracker.wait_next_messages_changed()
+        received_message = ac2._evtracker.wait_next_incoming_message()
         assert received_message.text == "hi"
 
         basename = "attachment.txt"
@@ -1552,7 +1663,7 @@ class TestOnlineAccount:
         assert msg_out.get_mime_headers() is None
 
         lp.sec("wait for ac2 to receive message")
-        ev = ac2._evtracker.get_matching("DC_EVENT_MSGS_CHANGED")
+        ev = ac2._evtracker.get_matching("DC_EVENT_INCOMING_MSG")
         in_id = ev.data2
         mime = ac2.get_message_by_id(in_id).get_mime_headers()
         assert mime.get_all("From")
@@ -1851,7 +1962,7 @@ class TestOnlineAccount:
         ac1.create_chat(ac2).send_text("with avatar!")
 
         lp.sec("ac2: wait for receiving message and avatar from ac1")
-        msg2 = ac2._evtracker.wait_next_messages_changed()
+        msg2 = ac2._evtracker.wait_next_incoming_message()
         assert msg2.chat.is_contact_request()
         received_path = msg2.get_sender_contact().get_profile_image()
         assert open(received_path, "rb").read() == open(p, "rb").read()
@@ -2043,10 +2154,8 @@ class TestOnlineAccount:
         assert msg_back.chat == chat
         assert chat.get_profile_image() is None
 
-    @pytest.mark.parametrize("inbox_watch", ["0", "1"])
-    def test_connectivity(self, acfactory, lp, inbox_watch):
+    def test_connectivity(self, acfactory, lp):
         ac1, ac2 = acfactory.get_two_online_accounts()
-        ac1.set_config("inbox_watch", inbox_watch)
         ac1.set_config("scan_all_folders_debounce_secs", "0")
 
         ac1._evtracker.wait_for_connectivity(const.DC_CONNECTIVITY_CONNECTED)
@@ -2163,7 +2272,7 @@ class TestOnlineAccount:
                 break  # DC is done with reading messages
 
     def test_send_receive_locations(self, acfactory, lp):
-        now = datetime.utcnow()
+        now = datetime.now(timezone.utc)
         ac1, ac2 = acfactory.get_two_online_accounts()
 
         lp.sec("ac1: create chat with ac2")
@@ -2286,7 +2395,7 @@ class TestOnlineAccount:
 
     def test_immediate_autodelete(self, acfactory, lp):
         ac1 = acfactory.get_online_configuring_account()
-        ac2 = acfactory.get_online_configuring_account(mvbox=False, move=False, sentbox=False)
+        ac2 = acfactory.get_online_configuring_account(move=False, sentbox=False)
 
         # "1" means delete immediately, while "0" means do not delete
         ac2.set_config("delete_server_after", "1")
@@ -2547,31 +2656,26 @@ class TestOnlineAccount:
         assert received_reply.quoted_text == "hello"
         assert received_reply.quote.id == out_msg.id
 
-    @pytest.mark.parametrize("folder,move,expected_destination,inbox_watch,", [
-        ("xyz", False, "xyz", "1"),  # Test that emails are recognized in a random folder but not moved
-        ("xyz", True, "DeltaChat", "1"),  # ...emails are found in a random folder and moved to DeltaChat
-        ("Spam", False, "INBOX", "1"),  # ...emails are moved from the spam folder to the Inbox
-        ("INBOX", False, "INBOX", "0"),  # ...emails are found in the `Inbox` folder even if `inbox_watch` is "0"
+    @pytest.mark.parametrize("folder,move,expected_destination,", [
+        ("xyz", False, "xyz"),  # Test that emails are recognized in a random folder but not moved
+        ("xyz", True, "DeltaChat"),  # ...emails are found in a random folder and moved to DeltaChat
+        ("Spam", False, "INBOX"),  # ...emails are moved from the spam folder to the Inbox
     ])
     # Testrun.org does not support the CREATE-SPECIAL-USE capability, which means that we can't create a folder with
     # the "\Junk" flag (see https://tools.ietf.org/html/rfc6154). So, we can't test spam folder detection by flag.
-    def test_scan_folders(self, acfactory, lp, folder, move, expected_destination, inbox_watch):
+    def test_scan_folders(self, acfactory, lp, folder, move, expected_destination):
         """Delta Chat periodically scans all folders for new messages to make sure we don't miss any."""
         variant = folder + "-" + str(move) + "-" + expected_destination
         lp.sec("Testing variant " + variant)
         ac1 = acfactory.get_online_configuring_account(move=move)
         ac2 = acfactory.get_online_configuring_account()
-        ac1.set_config("inbox_watch", inbox_watch)
 
         acfactory.wait_configure(ac1)
         ac1.direct_imap.create_folder(folder)
 
         acfactory.wait_configure_and_start_io()
         # Wait until each folder was selected once and we are IDLEing:
-        if inbox_watch == "1":
-            ac1._evtracker.get_info_contains("INBOX: Idle entering wait-on-remote state")
-        else:
-            ac1._evtracker.get_info_contains("IMAP-fake-IDLE: no folder, waiting for interrupt")
+        ac1._evtracker.get_info_contains("INBOX: Idle entering wait-on-remote state")
         ac1.stop_io()
 
         # Send a message to ac1 and move it to the mvbox:
@@ -2587,11 +2691,7 @@ class TestOnlineAccount:
         msg = ac1._evtracker.wait_next_incoming_message()
         assert msg.text == "hello"
 
-        # Wait until the message was moved (if at all) and we are IDLEing again:
-        if inbox_watch == "1":
-            ac1._evtracker.get_info_contains("INBOX: Idle entering wait-on-remote state")
-        else:
-            ac1._evtracker.get_info_contains("IMAP-fake-IDLE: no folder, waiting for interrupt")
+        # The message has been downloaded, which means it has reached its destination.
         ac1.direct_imap.select_folder(expected_destination)
         assert len(ac1.direct_imap.get_all_messages()) == 1
         if folder != expected_destination:
@@ -2614,7 +2714,7 @@ class TestOnlineAccount:
             if mvbox_move:
                 assert ac.get_config("configured_mvbox_folder")
 
-        ac1 = acfactory.get_online_configuring_account(mvbox=mvbox_move, move=mvbox_move)
+        ac1 = acfactory.get_online_configuring_account(move=mvbox_move)
         ac1.set_config("sentbox_move", "1")
         ac2 = acfactory.get_online_configuring_account()
 
@@ -2681,7 +2781,7 @@ class TestOnlineAccount:
 
         lp.sec("receive a message")
         ac2.create_group_chat("group name", contacts=[ac1]).send_text("incoming, unencrypted group message")
-        ac1._evtracker.wait_next_messages_changed()
+        ac1._evtracker.wait_next_incoming_message()
 
         lp.sec("send out message with bcc to ourselves")
         ac1.direct_imap.idle_start()
@@ -2712,6 +2812,22 @@ class TestOnlineAccount:
         # We can't decrypt the message in this chat, so the chat is empty:
         assert len(private_messages) == 0
 
+    def test_delete_deltachat_folder(self, acfactory):
+        """Test that DeltaChat folder is recreated if user deletes it manually."""
+        ac1 = acfactory.get_online_configuring_account(move=True)
+        ac2 = acfactory.get_online_configuring_account()
+        acfactory.wait_configure(ac1)
+
+        ac1.direct_imap.conn.delete_folder("DeltaChat")
+        assert len(ac1.direct_imap.conn.list_folders(pattern="DeltaChat")) == 0
+        acfactory.wait_configure_and_start_io()
+
+        ac2.create_chat(ac1).send_text("hello")
+        msg = ac1._evtracker.wait_next_incoming_message()
+        assert msg.text == "hello"
+
+        assert len(ac1.direct_imap.conn.list_folders(pattern="DeltaChat")) == 1
+
 
 class TestGroupStressTests:
     def test_group_many_members_add_leave_remove(self, acfactory, lp):
@@ -2826,7 +2942,8 @@ class TestGroupStressTests:
         lp.sec("ac2: check that ac3 is removed")
         msg = ac2._evtracker.wait_next_incoming_message()
 
-        assert msg.chat.num_contacts() == chat.num_contacts()
+        assert chat.num_contacts() == 2
+        assert msg.chat.num_contacts() == 2
         acfactory.dump_imap_summary(sys.stdout)
 
 

python/tests/test_increation.py

@@ -6,8 +6,6 @@ import shutil
 import pytest
 from filecmp import cmp
 
-from deltachat import const
-
 
 def wait_msg_delivered(account, msg_list):
     """ wait for one or more MSG_DELIVERED events to match msg_list contents. """
@@ -102,14 +100,10 @@ class TestOnlineInCreation:
         ])
 
         lp.sec("wait1 for original or forwarded messages to arrive")
-        ev1 = ac2._evtracker.get_matching("DC_EVENT_MSGS_CHANGED")
-        assert ev1.data1 > const.DC_CHAT_ID_LAST_SPECIAL
-        received_original = ac2.get_message_by_id(ev1.data2)
+        received_original = ac2._evtracker.wait_next_incoming_message()
         assert cmp(received_original.filename, orig, shallow=False)
 
         lp.sec("wait2 for original or forwarded messages to arrive")
-        ev2 = ac2._evtracker.get_matching("DC_EVENT_MSGS_CHANGED")
-        assert ev2.data1 > const.DC_CHAT_ID_LAST_SPECIAL
-        assert ev2.data1 != ev1.data1
-        received_copy = ac2.get_message_by_id(ev2.data2)
+        received_copy = ac2._evtracker.wait_next_incoming_message()
+        assert received_copy.id != received_original.id
         assert cmp(received_copy.filename, orig, shallow=False)

python/tests/test_lowlevel.py

@@ -36,7 +36,8 @@ def test_wrong_db(tmpdir):
     # write an invalid database file
     p.write("x123" * 10)
 
-    assert ffi.NULL == lib.dc_context_new(ffi.NULL, p.strpath.encode("ascii"), ffi.NULL)
+    context = lib.dc_context_new(ffi.NULL, p.strpath.encode("ascii"), ffi.NULL)
+    assert not lib.dc_context_is_open(context)
 
 
 def test_empty_blobdir(tmpdir):

python/tox.ini

@@ -1,7 +1,9 @@
 [tox]
+isolated_build = true
 envlist =
     py3
     lint
+    mypy
     auditwheels
 
 [testenv]
@@ -42,12 +44,20 @@ commands =
     flake8 tests/ examples/
     rst-lint --encoding 'utf-8' README.rst
 
+[testenv:mypy]
+deps =
+    mypy
+    typing
+    types-setuptools
+    types-requests
+commands =
+    mypy --no-incremental src/
+
 [testenv:doc]
 changedir=doc
 deps =
-    # Pin dependencies to the versions which actually work with Python 3.5.
-    sphinx==3.4.3
-    breathe==4.28.0
+    sphinx
+    breathe
 commands =
     sphinx-build -Q -w toxdoc-warnings.log -b html . _build/html
 

scripts/docker-coredeps-arm64/deps/build_python.sh

@@ -2,13 +2,13 @@
 
 set -x -e
 
-# we use the python3.6 environment as the base environment 
-/opt/python/cp36-cp36m/bin/pip install tox devpi-client auditwheel 
+# we use the python3.7 environment as the base environment 
+/opt/python/cp37-cp37m/bin/pip install tox devpi-client auditwheel 
 
 pushd /usr/bin
 
-ln -s /opt/_internal/cpython-3.6.*/bin/tox
-ln -s /opt/_internal/cpython-3.6.*/bin/devpi
-ln -s /opt/_internal/cpython-3.6.*/bin/auditwheel
+ln -s /opt/_internal/cpython-3.7.*/bin/tox
+ln -s /opt/_internal/cpython-3.7.*/bin/devpi
+ln -s /opt/_internal/cpython-3.7.*/bin/auditwheel
 
 popd

scripts/docker-coredeps/deps/build_python.sh

@@ -2,13 +2,13 @@
 
 set -x -e
 
-# we use the python3.6 environment as the base environment
-/opt/python/cp36-cp36m/bin/pip install tox devpi-client auditwheel
+# we use the python3.7 environment as the base environment
+/opt/python/cp37-cp37m/bin/pip install tox devpi-client auditwheel
 
 pushd /usr/bin
 
-ln -s /opt/_internal/cpython-3.6.*/bin/tox
-ln -s /opt/_internal/cpython-3.6.*/bin/devpi
-ln -s /opt/_internal/cpython-3.6.*/bin/auditwheel
+ln -s /opt/_internal/cpython-3.7.*/bin/tox
+ln -s /opt/_internal/cpython-3.7.*/bin/devpi
+ln -s /opt/_internal/cpython-3.7.*/bin/auditwheel
 
 popd

scripts/run_all.sh

@@ -19,11 +19,9 @@ export DCC_RS_TARGET=release
 
 # Configure access to a base python and to several python interpreters
 # needed by tox below.
-export PATH=$PATH:/opt/python/cp36-cp36m/bin
+export PATH=$PATH:/opt/python/cp37-cp37m/bin
 export PYTHONDONTWRITEBYTECODE=1
 pushd /bin
-rm -f python3.6
-ln -s /opt/python/cp36-cp36m/bin/python3.6
 rm -f python3.7
 ln -s /opt/python/cp37-cp37m/bin/python3.7
 rm -f python3.8

scripts/set_core_version.py

@@ -86,6 +86,8 @@ def main():
     print("")
     print("   git tag -a {}".format(newversion))
     print("   git push origin {}".format(newversion))
+    print("   git tag -a py-{}".format(newversion))
+    print("   git push origin py-{}".format(newversion))
     print("")
 
 

src/accounts.rs

@@ -13,41 +13,37 @@ use anyhow::{ensure, Context as _, Result};
 use serde::{Deserialize, Serialize};
 
 use crate::context::Context;
-use crate::events::Event;
+use crate::events::{Event, EventType, Events};
 
 /// Account manager, that can handle multiple accounts in a single place.
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct Accounts {
     dir: PathBuf,
     config: Config,
-    accounts: Arc<RwLock<BTreeMap<u32, Context>>>,
+    accounts: BTreeMap<u32, Context>,
     emitter: EventEmitter,
 
-    /// Sender side of the fake event channel.
-    ///
-    /// We never send any events over this channel, but hold it during the account manager lifetime
-    /// to prevent `EventEmitter` from returning `None` as long as account manager is alive, even if
-    /// it holds no accounts which could emit events.
-    fake_sender: Sender<crate::events::Event>,
+    /// Event channel to emit account manager errors.
+    events: Events,
 }
 
 impl Accounts {
     /// Loads or creates an accounts folder at the given `dir`.
-    pub async fn new(os_name: String, dir: PathBuf) -> Result<Self> {
+    pub async fn new(dir: PathBuf) -> Result<Self> {
         if !dir.exists().await {
-            Accounts::create(os_name, &dir).await?;
+            Accounts::create(&dir).await?;
         }
 
         Accounts::open(dir).await
     }
 
     /// Creates a new default structure.
-    pub async fn create(os_name: String, dir: &PathBuf) -> Result<()> {
+    pub async fn create(dir: &PathBuf) -> Result<()> {
         fs::create_dir_all(dir)
             .await
             .context("failed to create folder")?;
 
-        Config::new(os_name.clone(), dir).await?;
+        Config::new(dir).await?;
 
         Ok(())
     }
@@ -60,37 +56,44 @@ impl Accounts {
         let config_file = dir.join(CONFIG_NAME);
         ensure!(config_file.exists().await, "accounts.toml does not exist");
 
-        let config = Config::from_file(config_file).await?;
-        let accounts = config.load_accounts().await?;
+        let config = Config::from_file(config_file)
+            .await
+            .context("failed to load accounts config")?;
+        let accounts = config
+            .load_accounts()
+            .await
+            .context("failed to load accounts")?;
 
         let emitter = EventEmitter::new();
 
-        // Fake event stream to prevent event emitter from closing.
-        let (fake_sender, fake_receiver) = channel::bounded(1);
-        emitter.sender.send(fake_receiver).await?;
+        let events = Events::default();
+
+        emitter.sender.send(events.get_emitter()).await?;
 
         for account in accounts.values() {
-            emitter.add_account(account).await?;
+            emitter.add_account(account).await.with_context(|| {
+                format!("failed to add account {} to event emitter", account.id)
+            })?;
         }
 
         Ok(Self {
             dir,
             config,
-            accounts: Arc::new(RwLock::new(accounts)),
+            accounts,
             emitter,
-            fake_sender,
+            events,
         })
     }
 
     /// Get an account by its `id`:
     pub async fn get_account(&self, id: u32) -> Option<Context> {
-        self.accounts.read().await.get(&id).cloned()
+        self.accounts.get(&id).cloned()
     }
 
     /// Get the currently selected account.
     pub async fn get_selected_account(&self) -> Option<Context> {
         let id = self.config.get_selected_account().await;
-        self.accounts.read().await.get(&id).cloned()
+        self.accounts.get(&id).cloned()
     }
 
     /// Returns the currently selected account's id or None if no account is selected.
@@ -102,27 +105,39 @@ impl Accounts {
     }
 
     /// Select the given account.
-    pub async fn select_account(&self, id: u32) -> Result<()> {
+    pub async fn select_account(&mut self, id: u32) -> Result<()> {
         self.config.select_account(id).await?;
 
         Ok(())
     }
 
-    /// Add a new account.
-    pub async fn add_account(&self) -> Result<u32> {
-        let os_name = self.config.os_name().await;
+    /// Add a new account and opens it.
+    ///
+    /// Returns account ID.
+    pub async fn add_account(&mut self) -> Result<u32> {
         let account_config = self.config.new_account(&self.dir).await?;
 
-        let ctx = Context::new(os_name, account_config.dbfile().into(), account_config.id).await?;
+        let ctx = Context::new(account_config.dbfile().into(), account_config.id).await?;
         self.emitter.add_account(&ctx).await?;
-        self.accounts.write().await.insert(account_config.id, ctx);
+        self.accounts.insert(account_config.id, ctx);
+
+        Ok(account_config.id)
+    }
+
+    /// Adds a new closed account.
+    pub async fn add_closed_account(&mut self) -> Result<u32> {
+        let account_config = self.config.new_account(&self.dir).await?;
+
+        let ctx = Context::new_closed(account_config.dbfile().into(), account_config.id).await?;
+        self.emitter.add_account(&ctx).await?;
+        self.accounts.insert(account_config.id, ctx);
 
         Ok(account_config.id)
     }
 
     /// Remove an account.
-    pub async fn remove_account(&self, id: u32) -> Result<()> {
-        let ctx = self.accounts.write().await.remove(&id);
+    pub async fn remove_account(&mut self, id: u32) -> Result<()> {
+        let ctx = self.accounts.remove(&id);
         ensure!(ctx.is_some(), "no account with this id: {}", id);
         let ctx = ctx.unwrap();
         ctx.stop_io().await;
@@ -139,7 +154,7 @@ impl Accounts {
     }
 
     /// Migrate an existing account into this structure.
-    pub async fn migrate_account(&self, dbfile: PathBuf) -> Result<u32> {
+    pub async fn migrate_account(&mut self, dbfile: PathBuf) -> Result<u32> {
         let blobdir = Context::derive_blobdir(&dbfile);
         let walfile = Context::derive_walfile(&dbfile);
 
@@ -187,15 +202,9 @@ impl Accounts {
 
         match res {
             Ok(_) => {
-                let ctx = Context::with_blobdir(
-                    self.config.os_name().await,
-                    new_dbfile,
-                    new_blobdir,
-                    account_config.id,
-                )
-                .await?;
+                let ctx = Context::new(new_dbfile, account_config.id).await?;
                 self.emitter.add_account(&ctx).await?;
-                self.accounts.write().await.insert(account_config.id, ctx);
+                self.accounts.insert(account_config.id, ctx);
                 Ok(account_config.id)
             }
             Err(err) => {
@@ -216,7 +225,7 @@ impl Accounts {
 
     /// Get a list of all account ids.
     pub async fn get_all(&self) -> Vec<u32> {
-        self.accounts.read().await.keys().copied().collect()
+        self.accounts.keys().copied().collect()
     }
 
     /// This is meant especially for iOS, because iOS needs to tell the system when its background work is done.
@@ -230,7 +239,7 @@ impl Accounts {
     /// - while dc_accounts_all_work_done() returns false:
     ///   -  Wait for DC_EVENT_CONNECTIVITY_CHANGED
     pub async fn all_work_done(&self) -> bool {
-        for account in self.accounts.read().await.values() {
+        for account in self.accounts.values() {
             if !account.all_work_done().await {
                 return false;
             }
@@ -239,33 +248,34 @@ impl Accounts {
     }
 
     pub async fn start_io(&self) {
-        let accounts = &*self.accounts.read().await;
-        for account in accounts.values() {
+        for account in self.accounts.values() {
             account.start_io().await;
         }
     }
 
     pub async fn stop_io(&self) {
-        let accounts = &*self.accounts.read().await;
-        for account in accounts.values() {
+        for account in self.accounts.values() {
             account.stop_io().await;
         }
     }
 
     pub async fn maybe_network(&self) {
-        let accounts = &*self.accounts.read().await;
-        for account in accounts.values() {
+        for account in self.accounts.values() {
             account.maybe_network().await;
         }
     }
 
     pub async fn maybe_network_lost(&self) {
-        let accounts = &*self.accounts.read().await;
-        for account in accounts.values() {
+        for account in self.accounts.values() {
             account.maybe_network_lost().await;
         }
     }
 
+    /// Emits a single event.
+    pub fn emit_event(&self, event: EventType) {
+        self.events.emit(Event { id: 0, typ: event })
+    }
+
     /// Returns unified event emitter.
     pub async fn get_event_emitter(&self) -> EventEmitter {
         self.emitter.clone()
@@ -276,13 +286,13 @@ impl Accounts {
 #[derive(Debug, Clone)]
 pub struct EventEmitter {
     /// Aggregate stream of events from all accounts.
-    stream: Arc<RwLock<futures::stream::SelectAll<Receiver<crate::events::Event>>>>,
+    stream: Arc<RwLock<futures::stream::SelectAll<crate::events::EventEmitter>>>,
 
     /// Sender for the channel where new account emitters will be pushed.
-    sender: Sender<Receiver<crate::events::Event>>,
+    sender: Sender<crate::events::EventEmitter>,
 
     /// Receiver for the channel where new account emitters will be pushed.
-    receiver: Receiver<Receiver<crate::events::Event>>,
+    receiver: Receiver<crate::events::EventEmitter>,
 }
 
 impl EventEmitter {
@@ -315,9 +325,7 @@ impl EventEmitter {
 
     /// Add event emitter of a new account to the aggregate event emitter.
     pub async fn add_account(&self, context: &Context) -> Result<()> {
-        self.sender
-            .send(context.get_event_emitter().into_inner())
-            .await?;
+        self.sender.send(context.get_event_emitter()).await?;
         Ok(())
     }
 }
@@ -343,15 +351,17 @@ pub const CONFIG_NAME: &str = "accounts.toml";
 pub const DB_NAME: &str = "dc.db";
 
 /// Account manager configuration file.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct Config {
     file: PathBuf,
-    inner: Arc<RwLock<InnerConfig>>,
+    inner: InnerConfig,
 }
 
+/// Account manager configuration file contents.
+///
+/// This is serialized into TOML.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq)]
 struct InnerConfig {
-    pub os_name: String,
     /// The currently selected account.
     pub selected_account: u32,
     pub next_id: u32,
@@ -359,15 +369,15 @@ struct InnerConfig {
 }
 
 impl Config {
-    pub async fn new(os_name: String, dir: &PathBuf) -> Result<Self> {
+    pub async fn new(dir: &PathBuf) -> Result<Self> {
+        let inner = InnerConfig {
+            accounts: Vec::new(),
+            selected_account: 0,
+            next_id: 1,
+        };
         let cfg = Config {
             file: dir.join(CONFIG_NAME),
-            inner: Arc::new(RwLock::new(InnerConfig {
-                os_name,
-                accounts: Vec::new(),
-                selected_account: 0,
-                next_id: 1,
-            })),
+            inner,
         };
 
         cfg.sync().await?;
@@ -375,18 +385,11 @@ impl Config {
         Ok(cfg)
     }
 
-    pub async fn os_name(&self) -> String {
-        self.inner.read().await.os_name.clone()
-    }
-
     /// Sync the inmemory representation to disk.
     async fn sync(&self) -> Result<()> {
-        fs::write(
-            &self.file,
-            toml::to_string_pretty(&*self.inner.read().await)?,
-        )
-        .await
-        .context("failed to write config")
+        fs::write(&self.file, toml::to_string_pretty(&self.inner)?)
+            .await
+            .context("failed to write config")
     }
 
     /// Read a configuration from the given file into memory.
@@ -394,22 +397,21 @@ impl Config {
         let bytes = fs::read(&file).await.context("failed to read file")?;
         let inner: InnerConfig = toml::from_slice(&bytes).context("failed to parse config")?;
 
-        Ok(Config {
-            file,
-            inner: Arc::new(RwLock::new(inner)),
-        })
+        Ok(Config { file, inner })
     }
 
     pub async fn load_accounts(&self) -> Result<BTreeMap<u32, Context>> {
-        let cfg = &*self.inner.read().await;
         let mut accounts = BTreeMap::new();
-        for account_config in &cfg.accounts {
-            let ctx = Context::new(
-                cfg.os_name.clone(),
-                account_config.dbfile().into(),
-                account_config.id,
-            )
-            .await?;
+        for account_config in &self.inner.accounts {
+            let ctx = Context::new(account_config.dbfile().into(), account_config.id)
+                .await
+                .with_context(|| {
+                    format!(
+                        "failed to create context from file {:?}",
+                        account_config.dbfile()
+                    )
+                })?;
+
             accounts.insert(account_config.id, ctx);
         }
 
@@ -417,40 +419,44 @@ impl Config {
     }
 
     /// Create a new account in the given root directory.
-    async fn new_account(&self, dir: &PathBuf) -> Result<AccountConfig> {
+    async fn new_account(&mut self, dir: &PathBuf) -> Result<AccountConfig> {
         let id = {
-            let inner = &mut self.inner.write().await;
-            let id = inner.next_id;
+            let id = self.inner.next_id;
             let uuid = Uuid::new_v4();
             let target_dir = dir.join(uuid.to_simple_ref().to_string());
 
-            inner.accounts.push(AccountConfig {
+            self.inner.accounts.push(AccountConfig {
                 id,
                 dir: target_dir.into(),
                 uuid,
             });
-            inner.next_id += 1;
+            self.inner.next_id += 1;
             id
         };
 
         self.sync().await?;
 
-        self.select_account(id).await.expect("just added");
-        let cfg = self.get_account(id).await.expect("just added");
+        self.select_account(id)
+            .await
+            .context("failed to select just added account")?;
+        let cfg = self
+            .get_account(id)
+            .await
+            .context("failed to get just added account")?;
         Ok(cfg)
     }
 
     /// Removes an existing acccount entirely.
-    pub async fn remove_account(&self, id: u32) -> Result<()> {
+    pub async fn remove_account(&mut self, id: u32) -> Result<()> {
         {
-            let inner = &mut *self.inner.write().await;
-            if let Some(idx) = inner.accounts.iter().position(|e| e.id == id) {
+            if let Some(idx) = self.inner.accounts.iter().position(|e| e.id == id) {
                 // remove account from the configs
-                inner.accounts.remove(idx);
+                self.inner.accounts.remove(idx);
             }
-            if inner.selected_account == id {
+            if self.inner.selected_account == id {
                 // reset selected account
-                inner.selected_account = inner.accounts.get(0).map(|e| e.id).unwrap_or_default();
+                self.inner.selected_account =
+                    self.inner.accounts.get(0).map(|e| e.id).unwrap_or_default();
             }
         }
 
@@ -458,29 +464,22 @@ impl Config {
     }
 
     async fn get_account(&self, id: u32) -> Option<AccountConfig> {
-        self.inner
-            .read()
-            .await
-            .accounts
-            .iter()
-            .find(|e| e.id == id)
-            .cloned()
+        self.inner.accounts.iter().find(|e| e.id == id).cloned()
     }
 
     pub async fn get_selected_account(&self) -> u32 {
-        self.inner.read().await.selected_account
+        self.inner.selected_account
     }
 
-    pub async fn select_account(&self, id: u32) -> Result<()> {
+    pub async fn select_account(&mut self, id: u32) -> Result<()> {
         {
-            let inner = &mut *self.inner.write().await;
             ensure!(
-                inner.accounts.iter().any(|e| e.id == id),
+                self.inner.accounts.iter().any(|e| e.id == id),
                 "invalid account id: {}",
                 id
             );
 
-            inner.selected_account = id;
+            self.inner.selected_account = id;
         }
 
         self.sync().await?;
@@ -514,23 +513,17 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts1").into();
 
-        let accounts1 = Accounts::new("my_os".into(), p.clone()).await.unwrap();
+        let mut accounts1 = Accounts::new(p.clone()).await.unwrap();
         accounts1.add_account().await.unwrap();
 
         let accounts2 = Accounts::open(p).await.unwrap();
 
-        assert_eq!(accounts1.accounts.read().await.len(), 1);
+        assert_eq!(accounts1.accounts.len(), 1);
         assert_eq!(accounts1.config.get_selected_account().await, 1);
 
         assert_eq!(accounts1.dir, accounts2.dir);
-        assert_eq!(
-            &*accounts1.config.inner.read().await,
-            &*accounts2.config.inner.read().await,
-        );
-        assert_eq!(
-            accounts1.accounts.read().await.len(),
-            accounts2.accounts.read().await.len()
-        );
+        assert_eq!(accounts1.config, accounts2.config,);
+        assert_eq!(accounts1.accounts.len(), accounts2.accounts.len());
     }
 
     #[async_std::test]
@@ -538,26 +531,26 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts").into();
 
-        let accounts = Accounts::new("my_os".into(), p.clone()).await.unwrap();
-        assert_eq!(accounts.accounts.read().await.len(), 0);
+        let mut accounts = Accounts::new(p.clone()).await.unwrap();
+        assert_eq!(accounts.accounts.len(), 0);
         assert_eq!(accounts.config.get_selected_account().await, 0);
 
         let id = accounts.add_account().await.unwrap();
         assert_eq!(id, 1);
-        assert_eq!(accounts.accounts.read().await.len(), 1);
+        assert_eq!(accounts.accounts.len(), 1);
         assert_eq!(accounts.config.get_selected_account().await, 1);
 
         let id = accounts.add_account().await.unwrap();
         assert_eq!(id, 2);
         assert_eq!(accounts.config.get_selected_account().await, id);
-        assert_eq!(accounts.accounts.read().await.len(), 2);
+        assert_eq!(accounts.accounts.len(), 2);
 
         accounts.select_account(1).await.unwrap();
         assert_eq!(accounts.config.get_selected_account().await, 1);
 
         accounts.remove_account(1).await.unwrap();
         assert_eq!(accounts.config.get_selected_account().await, 2);
-        assert_eq!(accounts.accounts.read().await.len(), 1);
+        assert_eq!(accounts.accounts.len(), 1);
     }
 
     #[async_std::test]
@@ -565,14 +558,14 @@ mod tests {
         let dir = tempfile::tempdir()?;
         let p: PathBuf = dir.path().join("accounts").into();
 
-        let accounts = Accounts::new("my_os".into(), p.clone()).await?;
+        let mut accounts = Accounts::new(p.clone()).await?;
         assert!(accounts.get_selected_account().await.is_none());
         assert_eq!(accounts.config.get_selected_account().await, 0);
 
         let id = accounts.add_account().await?;
         assert!(accounts.get_selected_account().await.is_some());
         assert_eq!(id, 1);
-        assert_eq!(accounts.accounts.read().await.len(), 1);
+        assert_eq!(accounts.accounts.len(), 1);
         assert_eq!(accounts.config.get_selected_account().await, id);
 
         accounts.remove_account(id).await?;
@@ -586,14 +579,12 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts").into();
 
-        let accounts = Accounts::new("my_os".into(), p.clone()).await.unwrap();
-        assert_eq!(accounts.accounts.read().await.len(), 0);
+        let mut accounts = Accounts::new(p.clone()).await.unwrap();
+        assert_eq!(accounts.accounts.len(), 0);
         assert_eq!(accounts.config.get_selected_account().await, 0);
 
         let extern_dbfile: PathBuf = dir.path().join("other").into();
-        let ctx = Context::new("my_os".into(), extern_dbfile.clone(), 0)
-            .await
-            .unwrap();
+        let ctx = Context::new(extern_dbfile.clone(), 0).await.unwrap();
         ctx.set_config(crate::config::Config::Addr, Some("me@mail.com"))
             .await
             .unwrap();
@@ -604,7 +595,7 @@ mod tests {
             .migrate_account(extern_dbfile.clone())
             .await
             .unwrap();
-        assert_eq!(accounts.accounts.read().await.len(), 1);
+        assert_eq!(accounts.accounts.len(), 1);
         assert_eq!(accounts.config.get_selected_account().await, 1);
 
         let ctx = accounts.get_selected_account().await.unwrap();
@@ -623,7 +614,7 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts").into();
 
-        let accounts = Accounts::new("my_os".into(), p.clone()).await.unwrap();
+        let mut accounts = Accounts::new(p.clone()).await.unwrap();
 
         for expected_id in 1..10 {
             let id = accounts.add_account().await.unwrap();
@@ -643,7 +634,7 @@ mod tests {
         let dummy_accounts = 10;
 
         let (id0, id1, id2) = {
-            let accounts = Accounts::new("my_os".into(), p.clone()).await?;
+            let mut accounts = Accounts::new(p.clone()).await?;
             accounts.add_account().await?;
             let ids = accounts.get_all().await;
             assert_eq!(ids.len(), 1);
@@ -678,7 +669,7 @@ mod tests {
         assert!(id2 > id1 + dummy_accounts);
 
         let (id0_reopened, id1_reopened, id2_reopened) = {
-            let accounts = Accounts::new("my_os".into(), p.clone()).await?;
+            let accounts = Accounts::new(p.clone()).await?;
             let ctx = accounts.get_selected_account().await.unwrap();
             assert_eq!(
                 ctx.get_config(crate::config::Config::Addr).await?,
@@ -723,10 +714,10 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts").into();
 
-        let accounts = Accounts::new("my_os".into(), p.clone()).await?;
+        let accounts = Accounts::new(p.clone()).await?;
 
         // Make sure there are no accounts.
-        assert_eq!(accounts.accounts.read().await.len(), 0);
+        assert_eq!(accounts.accounts.len(), 0);
 
         // Create event emitter.
         let mut event_emitter = accounts.get_event_emitter().await;
@@ -743,4 +734,49 @@ mod tests {
 
         Ok(())
     }
+
+    #[async_std::test]
+    async fn test_encrypted_account() -> Result<()> {
+        let dir = tempfile::tempdir().context("failed to create tempdir")?;
+        let p: PathBuf = dir.path().join("accounts").into();
+
+        let mut accounts = Accounts::new(p.clone())
+            .await
+            .context("failed to create accounts manager")?;
+
+        assert_eq!(accounts.accounts.len(), 0);
+        let account_id = accounts
+            .add_closed_account()
+            .await
+            .context("failed to add closed account")?;
+        let account = accounts
+            .get_selected_account()
+            .await
+            .context("failed to get account")?;
+        assert_eq!(account.id, account_id);
+        let passphrase_set_success = account
+            .open("foobar".to_string())
+            .await
+            .context("failed to set passphrase")?;
+        assert!(passphrase_set_success);
+        drop(accounts);
+
+        let accounts = Accounts::new(p.clone())
+            .await
+            .context("failed to create second accounts manager")?;
+        let account = accounts
+            .get_selected_account()
+            .await
+            .context("failed to get account")?;
+        assert_eq!(account.is_open().await, false);
+
+        // Try wrong passphrase.
+        assert_eq!(account.open("barfoo".to_string()).await?, false);
+        assert_eq!(account.open("".to_string()).await?, false);
+
+        assert_eq!(account.open("foobar".to_string()).await?, true);
+        assert_eq!(account.is_open().await, true);
+
+        Ok(())
+    }
 }

src/aheader.rs

@@ -2,12 +2,12 @@
 //!
 //! Parse and create [Autocrypt-headers](https://autocrypt.org/en/latest/level1.html#the-autocrypt-header).
 
+use anyhow::{bail, Context as _, Error, Result};
 use std::collections::BTreeMap;
 use std::str::FromStr;
 use std::{fmt, str};
 
 use crate::contact::addr_cmp;
-use crate::context::Context;
 use crate::headerdef::{HeaderDef, HeaderDefMap};
 use crate::key::{DcKey, SignedPublicKey};
 
@@ -37,13 +37,13 @@ impl fmt::Display for EncryptPreference {
 }
 
 impl str::FromStr for EncryptPreference {
-    type Err = ();
+    type Err = Error;
 
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
+    fn from_str(s: &str) -> Result<Self> {
         match s {
             "mutual" => Ok(EncryptPreference::Mutual),
             "nopreference" => Ok(EncryptPreference::NoPreference),
-            _ => Err(()),
+            _ => bail!("Cannot parse encryption preference {}", s),
         }
     }
 }
@@ -70,28 +70,27 @@ impl Aheader {
         }
     }
 
+    /// Tries to parse Autocrypt header.
+    ///
+    /// If there is none, returns None. If the header is present but cannot be parsed, returns an
+    /// error.
     pub fn from_headers(
-        context: &Context,
         wanted_from: &str,
         headers: &[mailparse::MailHeader<'_>],
-    ) -> Option<Self> {
+    ) -> Result<Option<Self>> {
         if let Some(value) = headers.get_header_value(HeaderDef::Autocrypt) {
-            match Self::from_str(&value) {
-                Ok(header) => {
-                    if addr_cmp(&header.addr, wanted_from) {
-                        return Some(header);
-                    }
-                }
-                Err(err) => {
-                    warn!(
-                        context,
-                        "found invalid autocrypt header {}: {:?}", value, err
-                    );
-                }
+            let header = Self::from_str(&value)?;
+            if !addr_cmp(&header.addr, wanted_from) {
+                bail!(
+                    "Autocrypt header address {:?} is not {:?}",
+                    header.addr,
+                    wanted_from
+                );
             }
+            Ok(Some(header))
+        } else {
+            Ok(None)
         }
-
-        None
     }
 }
 
@@ -120,9 +119,9 @@ impl fmt::Display for Aheader {
 }
 
 impl str::FromStr for Aheader {
-    type Err = ();
+    type Err = Error;
 
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
+    fn from_str(s: &str) -> Result<Self> {
         let mut attributes: BTreeMap<String, String> = s
             .split(';')
             .filter_map(|a| {
@@ -136,15 +135,19 @@ impl str::FromStr for Aheader {
 
         let addr = match attributes.remove("addr") {
             Some(addr) => addr,
-            None => {
-                return Err(());
-            }
+            None => bail!("Autocrypt header has no addr"),
         };
         let public_key: SignedPublicKey = attributes
             .remove("keydata")
-            .ok_or(())
-            .and_then(|raw| SignedPublicKey::from_base64(&raw).or(Err(())))
-            .and_then(|key| key.verify().and(Ok(key)).or(Err(())))?;
+            .context("keydata attribute is not found")
+            .and_then(|raw| {
+                SignedPublicKey::from_base64(&raw).context("autocrypt key cannot be decoded")
+            })
+            .and_then(|key| {
+                key.verify()
+                    .and(Ok(key))
+                    .context("autocrypt key cannot be verified")
+            })?;
 
         let prefer_encrypt = attributes
             .remove("prefer-encrypt")
@@ -154,7 +157,7 @@ impl str::FromStr for Aheader {
         // Autocrypt-Level0: unknown attributes starting with an underscore can be safely ignored
         // Autocrypt-Level0: unknown attribute, treat the header as invalid
         if attributes.keys().any(|k| !k.starts_with('_')) {
-            return Err(());
+            bail!("Unknown Autocrypt attribute found");
         }
 
         Ok(Aheader {
@@ -172,38 +175,40 @@ mod tests {
     const RAWKEY: &str = "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";
 
     #[test]
-    fn test_from_str() {
+    fn test_from_str() -> Result<()> {
         let h: Aheader = format!(
             "addr=me@mail.com; prefer-encrypt=mutual; keydata={}",
             RAWKEY
         )
-        .parse()
-        .expect("failed to parse");
+        .parse()?;
 
         assert_eq!(h.addr, "me@mail.com");
         assert_eq!(h.prefer_encrypt, EncryptPreference::Mutual);
+        Ok(())
     }
 
     // EncryptPreference::Reset is an internal value, parser should never return it
     #[test]
-    fn test_from_str_reset() {
+    fn test_from_str_reset() -> Result<()> {
         let raw = format!(
             "addr=reset@example.com; prefer-encrypt=reset; keydata={}",
             RAWKEY
         );
-        let h: Aheader = raw.parse().expect("failed to parse");
+        let h: Aheader = raw.parse()?;
 
         assert_eq!(h.addr, "reset@example.com");
         assert_eq!(h.prefer_encrypt, EncryptPreference::NoPreference);
+        Ok(())
     }
 
     #[test]
-    fn test_from_str_non_critical() {
+    fn test_from_str_non_critical() -> Result<()> {
         let raw = format!("addr=me@mail.com; _foo=one; _bar=two; keydata={}", RAWKEY);
-        let h: Aheader = raw.parse().expect("failed to parse");
+        let h: Aheader = raw.parse()?;
 
         assert_eq!(h.addr, "me@mail.com");
         assert_eq!(h.prefer_encrypt, EncryptPreference::NoPreference);
+        Ok(())
     }
 
     #[test]
@@ -216,7 +221,7 @@ mod tests {
     }
 
     #[test]
-    fn test_good_headers() {
+    fn test_good_headers() -> Result<()> {
         let fixed_header = concat!(
             "addr=a@b.example.org; prefer-encrypt=mutual; ",
             "keydata=xsBNBFzG3j0BCAC6iNhT8zydvCXi8LI/gFnkadMbfmSE/rTJskRRra/utGbLyDta/yTrJg",
@@ -242,7 +247,7 @@ mod tests {
             " wm6qxo7xegRhmEl5uZ16zwyj4qz+xkjGy25Of5mWfUDoNw7OT7sjUbHOOMc="
         );
 
-        let ah = Aheader::from_str(fixed_header).expect("failed to parse");
+        let ah = Aheader::from_str(fixed_header)?;
         assert_eq!(ah.addr, "a@b.example.org");
         assert_eq!(ah.prefer_encrypt, EncryptPreference::Mutual);
         assert_eq!(format!("{}", ah), fixed_header);
@@ -250,18 +255,17 @@ mod tests {
         let rendered = ah.to_string();
         assert_eq!(rendered, fixed_header);
 
-        let ah = Aheader::from_str(&format!(" _foo; __FOO=BAR ;;; addr = a@b.example.org ;\r\n   prefer-encrypt = mutual ; keydata = {}", RAWKEY)).expect("failed to parse");
+        let ah = Aheader::from_str(&format!(" _foo; __FOO=BAR ;;; addr = a@b.example.org ;\r\n   prefer-encrypt = mutual ; keydata = {}", RAWKEY))?;
         assert_eq!(ah.addr, "a@b.example.org");
         assert_eq!(ah.prefer_encrypt, EncryptPreference::Mutual);
 
         Aheader::from_str(&format!(
             "addr=a@b.example.org; prefer-encrypt=ignoreUnknownValues; keydata={}",
             RAWKEY
-        ))
-        .expect("failed to parse");
+        ))?;
 
-        Aheader::from_str(&format!("addr=a@b.example.org; keydata={}", RAWKEY))
-            .expect("failed to parse");
+        Aheader::from_str(&format!("addr=a@b.example.org; keydata={}", RAWKEY))?;
+        Ok(())
     }
 
     #[test]

src/blob.rs

@@ -24,6 +24,7 @@ use crate::constants::{
 };
 use crate::context::Context;
 use crate::events::EventType;
+use crate::log::LogExt;
 use crate::message;
 
 /// Represents a file in the blob directory.
@@ -63,7 +64,7 @@ impl<'a> BlobObject<'a> {
     ) -> std::result::Result<BlobObject<'a>, BlobError> {
         let blobdir = context.get_blobdir();
         let (stem, ext) = BlobObject::sanitise_name(suggested_name);
-        let (name, mut file) = BlobObject::create_new_file(blobdir, &stem, &ext).await?;
+        let (name, mut file) = BlobObject::create_new_file(context, blobdir, &stem, &ext).await?;
         file.write_all(data)
             .await
             .map_err(|err| BlobError::WriteFailure {
@@ -87,13 +88,16 @@ impl<'a> BlobObject<'a> {
 
     // Creates a new file, returning a tuple of the name and the handle.
     async fn create_new_file(
+        context: &Context,
         dir: &Path,
         stem: &str,
         ext: &str,
     ) -> Result<(String, fs::File), BlobError> {
-        let max_attempt = 15;
+        const MAX_ATTEMPT: u32 = 16;
+        let mut attempt = 0;
         let mut name = format!("{}{}", stem, ext);
-        for attempt in 0..max_attempt {
+        loop {
+            attempt += 1;
             let path = dir.join(&name);
             match fs::OpenOptions::new()
                 .create_new(true)
@@ -103,24 +107,20 @@ impl<'a> BlobObject<'a> {
             {
                 Ok(file) => return Ok((name, file)),
                 Err(err) => {
-                    if attempt == max_attempt {
+                    if attempt >= MAX_ATTEMPT {
                         return Err(BlobError::CreateFailure {
                             blobdir: dir.to_path_buf(),
                             blobname: name,
                             cause: err,
                         });
+                    } else if attempt == 1 && !dir.exists().await {
+                        fs::create_dir_all(dir).await.ok_or_log(context);
                     } else {
                         name = format!("{}-{}{}", stem, rand::random::<u32>(), ext);
                     }
                 }
             }
         }
-        // This is supposed to be unreachable, but the compiler doesn't know.
-        Err(BlobError::CreateFailure {
-            blobdir: dir.to_path_buf(),
-            blobname: name,
-            cause: std::io::Error::new(std::io::ErrorKind::Other, "supposedly unreachable"),
-        })
     }
 
     /// Creates a new blob object with unique name by copying an existing file.
@@ -149,7 +149,7 @@ impl<'a> BlobObject<'a> {
             })?;
         let (stem, ext) = BlobObject::sanitise_name(&src.to_string_lossy());
         let (name, mut dst_file) =
-            BlobObject::create_new_file(context.get_blobdir(), &stem, &ext).await?;
+            BlobObject::create_new_file(context, context.get_blobdir(), &stem, &ext).await?;
         let name_for_err = name.clone();
         if let Err(err) = io::copy(&mut src_file, &mut dst_file).await {
             {
@@ -621,7 +621,13 @@ mod tests {
 
     use super::*;
 
-    use crate::{message::Message, test_utils::TestContext};
+    use crate::chat::{create_group_chat, ProtectionStatus};
+    use crate::{
+        chat,
+        message::Message,
+        test_utils::{self, TestContext},
+    };
+    use anyhow::Result;
     use image::Pixel;
 
     #[async_std::test]
@@ -870,11 +876,10 @@ mod tests {
     async fn test_selfavatar_in_blobdir() {
         let t = TestContext::new().await;
         let avatar_src = t.get_blobdir().join("avatar.png");
-        let avatar_bytes = include_bytes!("../test-data/image/avatar900x900.png");
         File::create(&avatar_src)
             .await
             .unwrap()
-            .write_all(avatar_bytes)
+            .write_all(test_utils::AVATAR_900x900_BYTES)
             .await
             .unwrap();
 
@@ -1064,4 +1069,38 @@ mod tests {
         assert_eq!(img.height() as u32, compressed_height);
         Ok(img)
     }
+
+    #[async_std::test]
+    async fn test_increation_in_blobdir() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        let chat_id = create_group_chat(&t, ProtectionStatus::Unprotected, "abc").await?;
+
+        let file = t.get_blobdir().join("anyfile.dat");
+        File::create(&file).await?.write_all("bla".as_ref()).await?;
+        let mut msg = Message::new(Viewtype::File);
+        msg.set_file(file.to_str().unwrap(), None);
+        let prepared_id = chat::prepare_msg(&t, chat_id, &mut msg).await?;
+        assert_eq!(prepared_id, msg.id);
+        assert!(msg.is_increation());
+
+        let msg = Message::load_from_db(&t, prepared_id).await?;
+        assert!(msg.is_increation());
+
+        Ok(())
+    }
+
+    #[async_std::test]
+    async fn test_increation_not_blobdir() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        let chat_id = create_group_chat(&t, ProtectionStatus::Unprotected, "abc").await?;
+        assert_ne!(t.get_blobdir().to_str(), t.dir.path().to_str());
+
+        let file = t.dir.path().join("anyfile.dat");
+        File::create(&file).await?.write_all("bla".as_ref()).await?;
+        let mut msg = Message::new(Viewtype::File);
+        msg.set_file(file.to_str().unwrap(), None);
+        assert!(chat::prepare_msg(&t, chat_id, &mut msg).await.is_err());
+
+        Ok(())
+    }
 }

src/chatlist.rs

@@ -1,6 +1,6 @@
 //! # Chat list module.
 
-use anyhow::{bail, ensure, Result};
+use anyhow::{ensure, Context as _, Result};
 
 use crate::chat::{update_special_chat_names, Chat, ChatId, ChatVisibility};
 use crate::constants::{
@@ -11,9 +11,9 @@ use crate::constants::{
 use crate::contact::Contact;
 use crate::context::Context;
 use crate::ephemeral::delete_expired_messages;
-use crate::lot::Lot;
 use crate::message::{Message, MessageState, MsgId};
 use crate::stock_str;
+use crate::summary::Summary;
 
 /// An object representing a single chatlist in memory.
 ///
@@ -271,63 +271,50 @@ impl Chatlist {
     /// Get a single chat ID of a chatlist.
     ///
     /// To get the message object from the message ID, use dc_get_chat().
-    pub fn get_chat_id(&self, index: usize) -> ChatId {
-        match self.ids.get(index) {
-            Some((chat_id, _msg_id)) => *chat_id,
-            None => ChatId::new(0),
-        }
+    pub fn get_chat_id(&self, index: usize) -> Result<ChatId> {
+        let (chat_id, _msg_id) = self
+            .ids
+            .get(index)
+            .context("chatlist index is out of range")?;
+        Ok(*chat_id)
     }
 
     /// Get a single message ID of a chatlist.
     ///
     /// To get the message object from the message ID, use dc_get_msg().
     pub fn get_msg_id(&self, index: usize) -> Result<Option<MsgId>> {
-        match self.ids.get(index) {
-            Some((_chat_id, msg_id)) => Ok(*msg_id),
-            None => bail!("Chatlist index out of range"),
-        }
+        let (_chat_id, msg_id) = self
+            .ids
+            .get(index)
+            .context("chatlist index is out of range")?;
+        Ok(*msg_id)
     }
 
-    /// Get a summary for a chatlist index.
-    ///
-    /// The summary is returned by a dc_lot_t object with the following fields:
-    ///
-    /// - dc_lot_t::text1: contains the username or the strings "Me", "Draft" and so on.
-    ///   The string may be colored by having a look at text1_meaning.
-    ///   If there is no such name or it should not be displayed, the element is NULL.
-    /// - dc_lot_t::text1_meaning: one of DC_TEXT1_USERNAME, DC_TEXT1_SELF or DC_TEXT1_DRAFT.
-    ///   Typically used to show dc_lot_t::text1 with different colors. 0 if not applicable.
-    /// - dc_lot_t::text2: contains an excerpt of the message text or strings as
-    ///   "No messages".  May be NULL of there is no such text (eg. for the archive link)
-    /// - dc_lot_t::timestamp: the timestamp of the message.  0 if not applicable.
-    /// - dc_lot_t::state: The state of the message as one of the DC_STATE_* constants (see #dc_msg_get_state()).
-    //    0 if not applicable.
+    /// Returns a summary for a given chatlist index.
     pub async fn get_summary(
         &self,
         context: &Context,
         index: usize,
         chat: Option<&Chat>,
-    ) -> Result<Lot> {
+    ) -> Result<Summary> {
         // The summary is created by the chat, not by the last message.
         // This is because we may want to display drafts here or stuff as
         // "is typing".
         // Also, sth. as "No messages" would not work if the summary comes from a message.
-        let (chat_id, lastmsg_id) = match self.ids.get(index) {
-            Some(ids) => ids,
-            None => bail!("Chatlist index out of range"),
-        };
-
+        let (chat_id, lastmsg_id) = self
+            .ids
+            .get(index)
+            .context("chatlist index is out of range")?;
         Chatlist::get_summary2(context, *chat_id, *lastmsg_id, chat).await
     }
 
+    /// Returns a summary for a given chatlist item.
     pub async fn get_summary2(
         context: &Context,
         chat_id: ChatId,
         lastmsg_id: Option<MsgId>,
         chat: Option<&Chat>,
-    ) -> Result<Lot> {
-        let mut ret = Lot::new();
-
+    ) -> Result<Summary> {
         let chat_loaded: Chat;
         let chat = if let Some(chat) = chat {
             chat
@@ -343,10 +330,9 @@ impl Chatlist {
                 (Some(lastmsg), None)
             } else {
                 match chat.typ {
-                    Chattype::Group | Chattype::Mailinglist => {
-                        let lastcontact =
-                            Contact::load_from_db(context, lastmsg.from_id).await.ok();
-                        (Some(lastmsg), lastcontact)
+                    Chattype::Group | Chattype::Broadcast | Chattype::Mailinglist => {
+                        let lastcontact = Contact::load_from_db(context, lastmsg.from_id).await?;
+                        (Some(lastmsg), Some(lastcontact))
                     }
                     Chattype::Single | Chattype::Undefined => (Some(lastmsg), None),
                 }
@@ -356,17 +342,15 @@ impl Chatlist {
         };
 
         if chat.id.is_archived_link() {
-            ret.text2 = None;
-        } else if let Some(mut lastmsg) =
-            lastmsg.filter(|msg| msg.from_id != DC_CONTACT_ID_UNDEFINED)
-        {
-            ret.fill(&mut lastmsg, chat, lastcontact.as_ref(), context)
-                .await;
+            Ok(Default::default())
+        } else if let Some(lastmsg) = lastmsg.filter(|msg| msg.from_id != DC_CONTACT_ID_UNDEFINED) {
+            Ok(Summary::new(context, &lastmsg, chat, lastcontact.as_ref()).await)
         } else {
-            ret.text2 = Some(stock_str::no_messages(context).await);
+            Ok(Summary {
+                text: stock_str::no_messages(context).await,
+                ..Default::default()
+            })
         }
-
-        Ok(ret)
     }
 
     pub fn get_index_for_id(&self, id: ChatId) -> Option<usize> {
@@ -380,7 +364,7 @@ pub async fn dc_get_archived_cnt(context: &Context) -> Result<usize> {
         .sql
         .count(
             "SELECT COUNT(*) FROM chats WHERE blocked!=? AND archived=?;",
-            paramsv![Blocked::Manually, ChatVisibility::Archived],
+            paramsv![Blocked::Yes, ChatVisibility::Archived],
         )
         .await?;
     Ok(count)
@@ -412,16 +396,26 @@ mod tests {
         // check that the chatlist starts with the most recent message
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 3);
-        assert_eq!(chats.get_chat_id(0), chat_id3);
-        assert_eq!(chats.get_chat_id(1), chat_id2);
-        assert_eq!(chats.get_chat_id(2), chat_id1);
+        assert_eq!(chats.get_chat_id(0).unwrap(), chat_id3);
+        assert_eq!(chats.get_chat_id(1).unwrap(), chat_id2);
+        assert_eq!(chats.get_chat_id(2).unwrap(), chat_id1);
+
+        // New drafts are sorted to the top
+        // We have to set a draft on the other two messages, too, as
+        // chat timestamps are only exact to the second and sorting by timestamp
+        // would not work.
+        // Message timestamps are "smeared" and unique, so we don't have this problem
+        // if we have any message (can be a draft) in all chats.
+        // Instead of setting drafts for chat_id1 and chat_id3, we could also sleep
+        // 2s here.
+        for chat_id in &[chat_id1, chat_id3, chat_id2] {
+            let mut msg = Message::new(Viewtype::Text);
+            msg.set_text(Some("hello".to_string()));
+            chat_id.set_draft(&t, Some(&mut msg)).await.unwrap();
+        }
 
-        // drafts are sorted to the top
-        let mut msg = Message::new(Viewtype::Text);
-        msg.set_text(Some("hello".to_string()));
-        chat_id2.set_draft(&t, Some(&mut msg)).await.unwrap();
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
-        assert_eq!(chats.get_chat_id(0), chat_id2);
+        assert_eq!(chats.get_chat_id(0).unwrap(), chat_id2);
 
         // check chatlist query and archive functionality
         let chats = Chatlist::try_load(&t, 0, Some("b"), None).await.unwrap();
@@ -452,7 +446,7 @@ mod tests {
 
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert!(chats.len() == 3);
-        assert!(!Chat::load_from_db(&t, chats.get_chat_id(0))
+        assert!(!Chat::load_from_db(&t, chats.get_chat_id(0).unwrap())
             .await
             .unwrap()
             .is_self_talk());
@@ -461,7 +455,7 @@ mod tests {
             .await
             .unwrap();
         assert!(chats.len() == 2); // device chat cannot be written and is skipped on forwarding
-        assert!(Chat::load_from_db(&t, chats.get_chat_id(0))
+        assert!(Chat::load_from_db(&t, chats.get_chat_id(0).unwrap())
             .await
             .unwrap()
             .is_self_talk());
@@ -506,7 +500,7 @@ mod tests {
         dc_receive_imf(
             &t,
             b"From: Bob Authname <bob@example.org>\n\
-                 To: alice@example.com\n\
+                 To: alice@example.org\n\
                  Subject: foo\n\
                  Message-ID: <msg1234@example.org>\n\
                  Chat-Version: 1.0\n\
@@ -514,7 +508,6 @@ mod tests {
                  \n\
                  hello foo\n",
             "INBOX",
-            1,
             false,
         )
         .await?;
@@ -535,7 +528,7 @@ mod tests {
         // check, the one-to-one-chat can be found using chatlist search query
         let chats = Chatlist::try_load(&t, 0, Some("bob authname"), None).await?;
         assert_eq!(chats.len(), 1);
-        assert_eq!(chats.get_chat_id(0), chat_id);
+        assert_eq!(chats.get_chat_id(0).unwrap(), chat_id);
 
         // change the name of the contact; this also changes the name of the one-to-one-chat
         let test_id = Contact::create(&t, "Bob Nickname", "bob@example.org").await?;
@@ -568,7 +561,7 @@ mod tests {
         dc_receive_imf(
             &t,
             b"From: bob@example.org\n\
-                 To: alice@example.com\n\
+                 To: alice@example.org\n\
                  Subject: foo\n\
                  Message-ID: <msg5678@example.org>\n\
                  Chat-Version: 1.0\n\
@@ -576,7 +569,6 @@ mod tests {
                  \n\
                  hello foo\n",
             "INBOX",
-            1,
             false,
         )
         .await?;
@@ -592,7 +584,7 @@ mod tests {
         // check, the one-to-one-chat can be found using chatlist search query
         let chats = Chatlist::try_load(&t, 0, Some("bob@example.org"), None).await?;
         assert_eq!(chats.len(), 1);
-        assert_eq!(chats.get_chat_id(0), chat_id);
+        assert_eq!(chats.get_chat_id(0)?, chat_id);
 
         // change the name of the contact; this also changes the name of the one-to-one-chat
         let test_id = Contact::create(&t, "Bob Nickname", "bob@example.org").await?;
@@ -603,7 +595,7 @@ mod tests {
         assert_eq!(chats.len(), 0); // email-addresses are searchable in contacts, not in chats
         let chats = Chatlist::try_load(&t, 0, Some("Bob Nickname"), None).await?;
         assert_eq!(chats.len(), 1);
-        assert_eq!(chats.get_chat_id(0), chat_id);
+        assert_eq!(chats.get_chat_id(0)?, chat_id);
 
         // revert name change, this again changes the name of the one-to-one-chat to the email-address
         let test_id = Contact::create(&t, "", "bob@example.org").await?;
@@ -637,6 +629,6 @@ mod tests {
 
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         let summary = chats.get_summary(&t, 0, None).await.unwrap();
-        assert_eq!(summary.get_text2().unwrap(), "foo: bar test"); // the linebreak should be removed from summary
+        assert_eq!(summary.text, "foo: bar test"); // the linebreak should be removed from summary
     }
 }

src/color.rs

@@ -35,6 +35,10 @@ pub(crate) fn str_to_color(s: &str) -> u32 {
     rgb_to_u32(hsluv_to_rgb((str_to_angle(s), 100.0, 50.0)))
 }
 
+pub fn color_int_to_hex_string(color: u32) -> String {
+    format!("{:#08x}", color).replace("0x", "#")
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/config.rs

@@ -1,6 +1,6 @@
 //! # Key-value configuration management.
 
-use anyhow::Result;
+use anyhow::{ensure, Result};
 use strum::{EnumProperty, IntoEnumIterator};
 use strum_macros::{AsRefStr, Display, EnumIter, EnumProperty, EnumString};
 
@@ -10,11 +10,9 @@ use crate::constants::DC_VERSION_STR;
 use crate::context::Context;
 use crate::dc_tools::{dc_get_abs_path, improve_single_line_input};
 use crate::events::EventType;
-use crate::job;
 use crate::message::MsgId;
 use crate::mimefactory::RECOMMENDED_FILE_SIZE;
 use crate::provider::{get_provider_by_id, Provider};
-use crate::stock_str;
 
 /// The available configuration keys.
 #[derive(
@@ -67,15 +65,9 @@ pub enum Config {
     #[strum(props(default = "1"))]
     MdnsEnabled,
 
-    #[strum(props(default = "1"))]
-    InboxWatch,
-
-    #[strum(props(default = "1"))]
+    #[strum(props(default = "0"))]
     SentboxWatch,
 
-    #[strum(props(default = "1"))]
-    MvboxWatch,
-
     #[strum(props(default = "1"))]
     MvboxMove,
 
@@ -170,6 +162,16 @@ pub enum Config {
     /// To how many seconds to debounce scan_all_folders. Used mainly in tests, to disable debouncing completely.
     #[strum(props(default = "60"))]
     ScanAllFoldersDebounceSecs,
+
+    /// Defines the max. size (in bytes) of messages downloaded automatically.
+    /// 0 = no limit.
+    #[strum(props(default = "0"))]
+    DownloadLimit,
+
+    /// Send sync messages, requires `BccSelf` to be set as well.
+    /// In a future versions, this switch may be removed.
+    #[strum(props(default = "0"))]
+    SendSyncMsgs,
 }
 
 impl Context {
@@ -196,7 +198,6 @@ impl Context {
 
         // Default values
         match key {
-            Config::Selfstatus => Ok(Some(stock_str::status_line(self).await)),
             Config::ConfiguredInboxFolder => Ok(Some("INBOX".to_owned())),
             _ => Ok(key.get_str("default").map(|s| s.to_string())),
         }
@@ -274,23 +275,12 @@ impl Context {
                         let mut blob = BlobObject::new_from_path(self, value.as_ref()).await?;
                         blob.recode_to_avatar_size(self).await?;
                         self.sql.set_raw_config(key, Some(blob.as_name())).await?;
-                        Ok(())
                     }
                     None => {
                         self.sql.set_raw_config(key, None).await?;
-                        Ok(())
                     }
                 }
-            }
-            Config::Selfstatus => {
-                let def = stock_str::status_line(self).await;
-                let val = if value.is_none() || value.unwrap() == def {
-                    None
-                } else {
-                    value
-                };
-
-                self.sql.set_raw_config(key, val).await?;
+                self.emit_event(EventType::SelfavatarChanged);
                 Ok(())
             }
             Config::DeleteDeviceAfter => {
@@ -311,15 +301,6 @@ impl Context {
                 self.sql.set_raw_config(key, value.as_deref()).await?;
                 Ok(())
             }
-            Config::DeleteServerAfter => {
-                let ret = self
-                    .sql
-                    .set_raw_config(key, value)
-                    .await
-                    .map_err(Into::into);
-                job::schedule_resync(self).await;
-                ret
-            }
             _ => {
                 self.sql.set_raw_config(key, value).await?;
                 Ok(())
@@ -328,10 +309,25 @@ impl Context {
     }
 
     pub async fn set_config_bool(&self, key: Config, value: bool) -> Result<()> {
-        self.set_config(key, if value { Some("1") } else { None })
+        self.set_config(key, if value { Some("1") } else { Some("0") })
             .await?;
         Ok(())
     }
+
+    /// Sets an ui-specific key-value pair.
+    /// Keys must be prefixed by `ui.`
+    /// and should be followed by the name of the system and maybe subsystem,
+    /// eg. `ui.desktop.linux.foo`, `ui.desktop.macos.bar`, `ui.ios.foobar`.
+    pub async fn set_ui_config(&self, key: &str, value: Option<&str>) -> Result<()> {
+        ensure!(key.starts_with("ui."), "set_ui_config(): prefix missing.");
+        self.sql.set_raw_config(key, value).await
+    }
+
+    /// Gets an ui-specific value set by set_ui_config().
+    pub async fn get_ui_config(&self, key: &str) -> Result<Option<String>> {
+        ensure!(key.starts_with("ui."), "get_ui_config(): prefix missing.");
+        self.sql.get_raw_config(key).await
+    }
 }
 
 /// Returns all available configuration keys concated together.
@@ -384,4 +380,38 @@ mod tests {
         let media_quality = constants::MediaQuality::from_i32(media_quality).unwrap_or_default();
         assert_eq!(media_quality, constants::MediaQuality::Worse);
     }
+
+    #[async_std::test]
+    async fn test_ui_config() -> Result<()> {
+        let t = TestContext::new().await;
+
+        assert_eq!(t.get_ui_config("ui.desktop.linux.systray").await?, None);
+
+        t.set_ui_config("ui.android.screen_security", Some("safe"))
+            .await?;
+        assert_eq!(
+            t.get_ui_config("ui.android.screen_security").await?,
+            Some("safe".to_string())
+        );
+
+        t.set_ui_config("ui.android.screen_security", None).await?;
+        assert_eq!(t.get_ui_config("ui.android.screen_security").await?, None);
+
+        assert!(t.set_ui_config("configured", Some("bar")).await.is_err());
+
+        Ok(())
+    }
+
+    /// Regression test for https://github.com/deltachat/deltachat-core-rust/issues/3012
+    #[async_std::test]
+    async fn test_set_config_bool() -> Result<()> {
+        let t = TestContext::new().await;
+
+        // We need some config that defaults to true
+        let c = Config::E2eeEnabled;
+        assert_eq!(t.get_config_bool(c).await?, true);
+        t.set_config_bool(c, false).await?;
+        assert_eq!(t.get_config_bool(c).await?, false);
+        Ok(())
+    }
 }

src/configure.rs

@@ -8,14 +8,12 @@ mod server_params;
 use anyhow::{bail, ensure, Context as _, Result};
 use async_std::prelude::*;
 use async_std::task;
-use itertools::Itertools;
 use job::Action;
 use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
 
 use crate::dc_tools::EmailAddress;
 use crate::imap::Imap;
-use crate::login_param::Socks5Config;
-use crate::login_param::{LoginParam, ServerLoginParam};
+use crate::login_param::{CertificateChecks, LoginParam, ServerLoginParam, Socks5Config};
 use crate::message::Message;
 use crate::oauth2::dc_get_oauth2_addr;
 use crate::provider::{Protocol, Socket, UsernamePattern};
@@ -223,7 +221,9 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
             "checking internal provider-info for offline autoconfig"
         );
 
-        if let Some(provider) = provider::get_provider_info(&param_domain, socks5_enabled).await {
+        if let Some(provider) =
+            provider::get_provider_info(ctx, &param_domain, socks5_enabled).await
+        {
             param.provider = Some(provider);
             match provider.status {
                 provider::Status::Ok | provider::Status::Preparation => {
@@ -250,6 +250,7 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
                                         }
                                     }
                                 },
+                                strict_tls: Some(provider.strict_tls),
                             })
                             .collect();
 
@@ -290,6 +291,7 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
             port: param.imap.port,
             socket: param.imap.security,
             username: param.imap.user.clone(),
+            strict_tls: None,
         })
     }
     if !servers
@@ -302,8 +304,24 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
             port: param.smtp.port,
             socket: param.smtp.security,
             username: param.smtp.user.clone(),
+            strict_tls: None,
         })
     }
+
+    // respect certificate setting from function parameters
+    for mut server in &mut servers {
+        let certificate_checks = match server.protocol {
+            Protocol::Imap => param.imap.certificate_checks,
+            Protocol::Smtp => param.smtp.certificate_checks,
+        };
+        server.strict_tls = match certificate_checks {
+            CertificateChecks::AcceptInvalidCertificates
+            | CertificateChecks::AcceptInvalidCertificates2 => Some(false),
+            CertificateChecks::Strict => Some(true),
+            CertificateChecks::Automatic => server.strict_tls,
+        };
+    }
+
     let servers = expand_param_vector(servers, &param.addr, &param_domain);
 
     progress!(ctx, 550);
@@ -319,7 +337,9 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
         .filter(|params| params.protocol == Protocol::Smtp)
         .cloned()
         .collect();
-    let provider_strict_tls = param.provider.map_or(false, |provider| provider.strict_tls);
+    let provider_strict_tls = param
+        .provider
+        .map_or(socks5_config.is_some(), |provider| provider.strict_tls);
 
     let smtp_config_task = task::spawn(async move {
         let mut smtp_configured = false;
@@ -329,6 +349,11 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
             smtp_param.server = smtp_server.hostname.clone();
             smtp_param.port = smtp_server.port;
             smtp_param.security = smtp_server.socket;
+            smtp_param.certificate_checks = match smtp_server.strict_tls {
+                Some(true) => CertificateChecks::Strict,
+                Some(false) => CertificateChecks::AcceptInvalidCertificates,
+                None => CertificateChecks::Automatic,
+            };
 
             match try_smtp_one_param(
                 &context_smtp,
@@ -372,6 +397,11 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
         param.imap.server = imap_server.hostname.clone();
         param.imap.port = imap_server.port;
         param.imap.security = imap_server.socket;
+        param.imap.certificate_checks = match imap_server.strict_tls {
+            Some(true) => CertificateChecks::Strict,
+            Some(false) => CertificateChecks::AcceptInvalidCertificates,
+            None => CertificateChecks::Automatic,
+        };
 
         match try_imap_one_param(
             ctx,
@@ -413,8 +443,7 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
 
     progress!(ctx, 900);
 
-    let create_mvbox = ctx.get_config_bool(Config::MvboxWatch).await?
-        || ctx.get_config_bool(Config::MvboxMove).await?;
+    let create_mvbox = ctx.get_config_bool(Config::MvboxMove).await?;
 
     imap.configure_folders(ctx, create_mvbox).await?;
 
@@ -425,11 +454,8 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
     drop(imap);
 
     progress!(ctx, 910);
-    // configuration success - write back the configured parameters with the
-    // "configured_" prefix; also write the "configured"-flag */
     // the trailing underscore is correct
     param.save_to_database(ctx, "configured_").await?;
-    ctx.sql.set_raw_config_bool("configured", true).await?;
     ctx.set_config(Config::ConfiguredTimestamp, Some(&time().to_string()))
         .await?;
 
@@ -442,11 +468,13 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
         ctx,
         job::Job::new(Action::FetchExistingMsgs, 0, Params::new(), 0),
     )
-    .await;
+    .await?;
 
     progress!(ctx, 940);
     update_device_chats_handle.await?;
 
+    ctx.sql.set_raw_config_bool("configured", true).await?;
+
     Ok(())
 }
 
@@ -653,7 +681,11 @@ async fn nicer_configuration_error(context: &Context, errors: Vec<ConfigurationE
         return first_err.msg.to_string();
     }
 
-    errors.iter().map(|e| e.to_string()).join("\n\n")
+    errors
+        .iter()
+        .map(|e| e.to_string())
+        .collect::<Vec<String>>()
+        .join("\n\n")
 }
 
 #[derive(Debug, thiserror::Error)]

src/configure/auto_mozilla.rs

@@ -243,6 +243,7 @@ fn parse_serverparams(in_emailaddr: &str, xml_raw: &str) -> Result<Vec<ServerPar
                 hostname: server.hostname,
                 port: server.port,
                 username: server.username,
+                strict_tls: None,
             })
         })
         .collect();

src/configure/auto_outlook.rs

@@ -180,6 +180,7 @@ fn protocols_to_serverparams(protocols: Vec<ProtocolTag>) -> Vec<ServerParams> {
                 hostname: protocol.server,
                 port: protocol.port,
                 username: String::new(),
+                strict_tls: None,
             })
         })
         .collect()

src/configure/server_params.rs

@@ -22,6 +22,9 @@ pub(crate) struct ServerParams {
 
     /// Username, empty if unknown.
     pub username: String,
+
+    /// Whether TLS certificates should be strictly checked or not, `None` for automatic.
+    pub strict_tls: Option<bool>,
 }
 
 impl ServerParams {
@@ -128,6 +131,23 @@ impl ServerParams {
             vec![self]
         }
     }
+
+    fn expand_strict_tls(self) -> Vec<ServerParams> {
+        if self.strict_tls.is_none() {
+            vec![
+                Self {
+                    strict_tls: Some(true), // Strict.
+                    ..self.clone()
+                },
+                Self {
+                    strict_tls: None, // Automatic.
+                    ..self
+                },
+            ]
+        } else {
+            vec![self]
+        }
+    }
 }
 
 /// Expands vector of `ServerParams`, replacing placeholders with
@@ -138,10 +158,32 @@ pub(crate) fn expand_param_vector(
     domain: &str,
 ) -> Vec<ServerParams> {
     v.into_iter()
-        // The order of expansion is important: ports are expanded the
-        // last, so they are changed the first. Username is only
-        // changed if default value (address with domain) didn't work
-        // for all available hosts and ports.
+        .map(|params| {
+            if params.socket == Socket::Plain {
+                ServerParams {
+                    // Avoid expanding plaintext configuration into configuration with and without
+                    // `strict_tls` if `strict_tls` is set to `None` as `strict_tls` is not used for
+                    // plaintext connections. Always setting it to "enabled", just in case.
+                    strict_tls: Some(true),
+                    ..params
+                }
+            } else {
+                params
+            }
+        })
+        // The order of expansion is important.
+        //
+        // Ports are expanded the last, so they are changed the first.  Username is only changed if
+        // default value (address with domain) didn't work for all available hosts and ports.
+        //
+        // Strict TLS must be expanded first, so we try all configurations with strict TLS first
+        // and only then try again without strict TLS. Otherwise we may lock to wrong hostname
+        // without strict TLS when another hostname with strict TLS is available.  For example, if
+        // both smtp.example.net and mail.example.net are running an SMTP server, but both use a
+        // certificate that is only valid for mail.example.net, we want to skip smtp.example.net
+        // and use mail.example.net with strict TLS instead of using smtp.example.net without
+        // strict TLS.
+        .flat_map(|params| params.expand_strict_tls().into_iter())
         .flat_map(|params| params.expand_usernames(addr).into_iter())
         .flat_map(|params| params.expand_hostnames(domain).into_iter())
         .flat_map(|params| params.expand_ports().into_iter())
@@ -161,6 +203,7 @@ mod tests {
                 port: 0,
                 socket: Socket::Ssl,
                 username: "foobar".to_string(),
+                strict_tls: Some(true),
             }],
             "foobar@example.net",
             "example.net",
@@ -174,6 +217,7 @@ mod tests {
                 port: 993,
                 socket: Socket::Ssl,
                 username: "foobar".to_string(),
+                strict_tls: Some(true)
             }],
         );
 
@@ -184,6 +228,7 @@ mod tests {
                 port: 123,
                 socket: Socket::Automatic,
                 username: "foobar".to_string(),
+                strict_tls: None,
             }],
             "foobar@example.net",
             "example.net",
@@ -197,16 +242,59 @@ mod tests {
                     hostname: "example.net".to_string(),
                     port: 123,
                     socket: Socket::Ssl,
-                    username: "foobar".to_string()
+                    username: "foobar".to_string(),
+                    strict_tls: Some(true),
                 },
                 ServerParams {
                     protocol: Protocol::Smtp,
                     hostname: "example.net".to_string(),
                     port: 123,
                     socket: Socket::Starttls,
-                    username: "foobar".to_string()
+                    username: "foobar".to_string(),
+                    strict_tls: Some(true)
+                },
+                ServerParams {
+                    protocol: Protocol::Smtp,
+                    hostname: "example.net".to_string(),
+                    port: 123,
+                    socket: Socket::Ssl,
+                    username: "foobar".to_string(),
+                    strict_tls: None,
+                },
+                ServerParams {
+                    protocol: Protocol::Smtp,
+                    hostname: "example.net".to_string(),
+                    port: 123,
+                    socket: Socket::Starttls,
+                    username: "foobar".to_string(),
+                    strict_tls: None
                 }
             ],
         );
+
+        // Test that strict_tls is not expanded for plaintext connections.
+        let v = expand_param_vector(
+            vec![ServerParams {
+                protocol: Protocol::Smtp,
+                hostname: "example.net".to_string(),
+                port: 123,
+                socket: Socket::Plain,
+                username: "foobar".to_string(),
+                strict_tls: None,
+            }],
+            "foobar@example.net",
+            "example.net",
+        );
+        assert_eq!(
+            v,
+            vec![ServerParams {
+                protocol: Protocol::Smtp,
+                hostname: "example.net".to_string(),
+                port: 123,
+                socket: Socket::Plain,
+                username: "foobar".to_string(),
+                strict_tls: Some(true)
+            }],
+        );
     }
 }

src/constants.rs

@@ -24,7 +24,7 @@ pub static DC_VERSION_STR: Lazy<String> = Lazy::new(|| env!("CARGO_PKG_VERSION")
 #[repr(i8)]
 pub enum Blocked {
     Not = 0,
-    Manually = 1,
+    Yes = 1,
     Request = 2,
 }
 
@@ -153,6 +153,7 @@ pub enum Chattype {
     Single = 100,
     Group = 120,
     Mailinglist = 140,
+    Broadcast = 160,
 }
 
 impl Default for Chattype {
@@ -294,6 +295,9 @@ pub enum Viewtype {
 
     /// Message is an invitation to a videochat.
     VideochatInvitation = 70,
+
+    /// Message is an webxdc instance.
+    Webxdc = 80,
 }
 
 impl Default for Viewtype {
@@ -338,6 +342,7 @@ mod tests {
             Viewtype::VideochatInvitation,
             Viewtype::from_i32(70).unwrap()
         );
+        assert_eq!(Viewtype::Webxdc, Viewtype::from_i32(80).unwrap());
     }
 
     #[test]
@@ -348,6 +353,7 @@ mod tests {
         assert_eq!(Chattype::Single, Chattype::from_i32(100).unwrap());
         assert_eq!(Chattype::Group, Chattype::from_i32(120).unwrap());
         assert_eq!(Chattype::Mailinglist, Chattype::from_i32(140).unwrap());
+        assert_eq!(Chattype::Broadcast, Chattype::from_i32(160).unwrap());
     }
 
     #[test]
@@ -383,7 +389,7 @@ mod tests {
         // values may be written to disk and must not change
         assert_eq!(Blocked::Not, Blocked::default());
         assert_eq!(Blocked::Not, Blocked::from_i32(0).unwrap());
-        assert_eq!(Blocked::Manually, Blocked::from_i32(1).unwrap());
+        assert_eq!(Blocked::Yes, Blocked::from_i32(1).unwrap());
         assert_eq!(Blocked::Request, Blocked::from_i32(2).unwrap());
     }
 

src/contact.rs

@@ -2,10 +2,9 @@
 
 use std::convert::{TryFrom, TryInto};
 
-use anyhow::{bail, ensure, format_err, Result};
+use anyhow::{bail, ensure, Context as _, Result};
 use async_std::path::PathBuf;
 use deltachat_derive::{FromSql, ToSql};
-use itertools::Itertools;
 use once_cell::sync::Lazy;
 use regex::Regex;
 
@@ -67,6 +66,9 @@ pub struct Contact {
     /// Blocked state. Use dc_contact_is_blocked to access this field.
     pub blocked: bool,
 
+    /// Time when the contact was seen last time, Unix time in seconds.
+    last_seen: i64,
+
     /// The origin/source of the contact.
     pub origin: Origin,
 
@@ -174,12 +176,19 @@ pub enum VerifiedStatus {
     BidirectVerified = 2,
 }
 
+impl Default for VerifiedStatus {
+    fn default() -> Self {
+        Self::Unverified
+    }
+}
+
 impl Contact {
     pub async fn load_from_db(context: &Context, contact_id: u32) -> Result<Self> {
         let mut contact = context
             .sql
             .query_row(
-                "SELECT c.name, c.addr, c.origin, c.blocked, c.authname, c.param, c.status
+                "SELECT c.name, c.addr, c.origin, c.blocked, c.last_seen,
+                c.authname, c.param, c.status
                FROM contacts c
               WHERE c.id=?;",
                 paramsv![contact_id as i32],
@@ -188,15 +197,17 @@ impl Contact {
                     let addr: String = row.get(1)?;
                     let origin: Origin = row.get(2)?;
                     let blocked: Option<bool> = row.get(3)?;
-                    let authname: String = row.get(4)?;
-                    let param: String = row.get(5)?;
-                    let status: Option<String> = row.get(6)?;
+                    let last_seen: i64 = row.get(4)?;
+                    let authname: String = row.get(5)?;
+                    let param: String = row.get(6)?;
+                    let status: Option<String> = row.get(7)?;
                     let contact = Self {
                         id: contact_id,
                         name,
                         authname,
                         addr,
                         blocked: blocked.unwrap_or_default(),
+                        last_seen,
                         origin,
                         param: param.parse().unwrap_or_default(),
                         status: status.unwrap_or_default(),
@@ -228,12 +239,15 @@ impl Contact {
         self.blocked
     }
 
+    /// Returns last seen timestamp.
+    pub fn last_seen(&self) -> i64 {
+        self.last_seen
+    }
+
     /// Check if a contact is blocked.
-    pub async fn is_blocked_load(context: &Context, id: u32) -> bool {
-        Self::load_from_db(context, id)
-            .await
-            .map(|contact| contact.blocked)
-            .unwrap_or_default()
+    pub async fn is_blocked_load(context: &Context, id: u32) -> Result<bool> {
+        let blocked = Self::load_from_db(context, id).await?.blocked;
+        Ok(blocked)
     }
 
     /// Block the given contact.
@@ -263,7 +277,7 @@ impl Contact {
 
         let (contact_id, sth_modified) =
             Contact::add_or_lookup(context, &name, &addr, Origin::ManuallyCreated).await?;
-        let blocked = Contact::is_blocked_load(context, contact_id).await;
+        let blocked = Contact::is_blocked_load(context, contact_id).await?;
         match sth_modified {
             Modifier::None => {}
             Modifier::Modified | Modifier::Created => {
@@ -297,17 +311,17 @@ impl Contact {
     /// use `dc_may_be_valid_addr()`.
     pub async fn lookup_id_by_addr(
         context: &Context,
-        addr: impl AsRef<str>,
+        addr: &str,
         min_origin: Origin,
     ) -> Result<Option<u32>> {
-        if addr.as_ref().is_empty() {
+        if addr.is_empty() {
             bail!("lookup_id_by_addr: empty address");
         }
 
-        let addr_normalized = addr_normalize(addr.as_ref());
+        let addr_normalized = addr_normalize(addr);
 
         if let Some(addr_self) = context.get_config(Config::ConfiguredAddr).await? {
-            if addr_cmp(addr_normalized, addr_self) {
+            if addr_cmp(addr_normalized, &addr_self) {
                 return Ok(Some(DC_CONTACT_ID_SELF));
             }
         }
@@ -369,7 +383,7 @@ impl Contact {
             .await?
             .unwrap_or_default();
 
-        if addr_cmp(&addr, addr_self) {
+        if addr_cmp(&addr, &addr_self) {
             return Ok((DC_CONTACT_ID_SELF, sth_modified));
         }
 
@@ -568,7 +582,7 @@ impl Contact {
 
         for (name, addr) in split_address_book(addr_book).into_iter() {
             let (name, addr) = sanitize_name_and_addr(name, addr);
-            let name = normalize_name(name);
+            let name = normalize_name(&name);
             match Contact::add_or_lookup(context, &name, &addr, Origin::AddressBook).await {
                 Err(err) => {
                     warn!(
@@ -707,7 +721,7 @@ impl Contact {
             .sql
             .query_map(
                 "SELECT name, grpid FROM chats WHERE type=? AND blocked=?;",
-                paramsv![Chattype::Mailinglist, Blocked::Manually],
+                paramsv![Chattype::Mailinglist, Blocked::Yes],
                 |row| Ok((row.get::<_, String>(0)?, row.get::<_, String>(1)?)),
                 |rows| {
                     rows.collect::<std::result::Result<Vec<_>, _>>()
@@ -754,12 +768,9 @@ impl Contact {
 
     /// Get blocked contacts.
     pub async fn get_all_blocked(context: &Context) -> Result<Vec<u32>> {
-        if let Err(e) = Contact::update_blocked_mailinglist_contacts(context).await {
-            warn!(
-                context,
-                "Cannot update blocked mailinglist contacts: {:?}", e
-            );
-        }
+        Contact::update_blocked_mailinglist_contacts(context)
+            .await
+            .context("cannot update blocked mailinglist contacts")?;
 
         let list = context
             .sql
@@ -1018,7 +1029,7 @@ impl Contact {
     ///
     /// The UI may draw a checkbox or something like that beside verified contacts.
     ///
-    pub async fn is_verified(&self, context: &Context) -> VerifiedStatus {
+    pub async fn is_verified(&self, context: &Context) -> Result<VerifiedStatus> {
         self.is_verified_ex(context, None).await
     }
 
@@ -1029,54 +1040,46 @@ impl Contact {
         &self,
         context: &Context,
         peerstate: Option<&Peerstate>,
-    ) -> VerifiedStatus {
+    ) -> Result<VerifiedStatus> {
         // We're always sort of secured-verified as we could verify the key on this device any time with the key
         // on this device
         if self.id == DC_CONTACT_ID_SELF {
-            return VerifiedStatus::BidirectVerified;
+            return Ok(VerifiedStatus::BidirectVerified);
         }
 
         if let Some(peerstate) = peerstate {
             if peerstate.verified_key.is_some() {
-                return VerifiedStatus::BidirectVerified;
+                return Ok(VerifiedStatus::BidirectVerified);
             }
         }
 
-        let peerstate = match Peerstate::from_addr(context, &self.addr).await {
-            Ok(peerstate) => peerstate,
-            Err(err) => {
-                warn!(
-                    context,
-                    "Failed to load peerstate for address {}: {}", self.addr, err
-                );
-                return VerifiedStatus::Unverified;
-            }
-        };
-
-        if let Some(ps) = peerstate {
-            if ps.verified_key.is_some() {
-                return VerifiedStatus::BidirectVerified;
+        if let Some(peerstate) = Peerstate::from_addr(context, &self.addr).await? {
+            if peerstate.verified_key.is_some() {
+                return Ok(VerifiedStatus::BidirectVerified);
             }
         }
 
-        VerifiedStatus::Unverified
+        Ok(VerifiedStatus::Unverified)
     }
 
-    pub async fn addr_equals_contact(context: &Context, addr: &str, contact_id: u32) -> bool {
+    pub async fn addr_equals_contact(
+        context: &Context,
+        addr: &str,
+        contact_id: u32,
+    ) -> Result<bool> {
         if addr.is_empty() {
-            return false;
+            return Ok(false);
         }
 
-        if let Ok(contact) = Contact::load_from_db(context, contact_id).await {
-            if !contact.addr.is_empty() {
-                let normalized_addr = addr_normalize(addr);
-                if contact.addr == normalized_addr {
-                    return true;
-                }
+        let contact = Contact::load_from_db(context, contact_id).await?;
+        if !contact.addr.is_empty() {
+            let normalized_addr = addr_normalize(addr);
+            if contact.addr == normalized_addr {
+                return Ok(true);
             }
         }
 
-        false
+        Ok(false)
     }
 
     pub async fn get_real_cnt(context: &Context) -> Result<usize> {
@@ -1094,30 +1097,34 @@ impl Contact {
         Ok(count)
     }
 
-    pub async fn real_exists_by_id(context: &Context, contact_id: u32) -> bool {
-        if !context.sql.is_open().await || contact_id <= DC_CONTACT_ID_LAST_SPECIAL {
-            return false;
+    pub async fn real_exists_by_id(context: &Context, contact_id: u32) -> Result<bool> {
+        if contact_id <= DC_CONTACT_ID_LAST_SPECIAL {
+            return Ok(false);
         }
 
-        context
+        let exists = context
             .sql
             .exists(
                 "SELECT COUNT(*) FROM contacts WHERE id=?;",
                 paramsv![contact_id as i32],
             )
-            .await
-            .unwrap_or_default()
+            .await?;
+        Ok(exists)
     }
 
-    pub async fn scaleup_origin_by_id(context: &Context, contact_id: u32, origin: Origin) -> bool {
+    pub async fn scaleup_origin_by_id(
+        context: &Context,
+        contact_id: u32,
+        origin: Origin,
+    ) -> Result<()> {
         context
             .sql
             .execute(
                 "UPDATE contacts SET origin=? WHERE id=? AND origin<?;",
                 paramsv![origin, contact_id as i32, origin],
             )
-            .await
-            .is_ok()
+            .await?;
+        Ok(())
     }
 }
 
@@ -1203,7 +1210,8 @@ WHERE type=? AND id IN (
         // also unblock mailinglist
         // if the contact is a mailinglist address explicitly created to allow unblocking
         if !new_blocking && contact.origin == Origin::MailinglistAddress {
-            if let Some((chat_id, _, _)) = chat::get_chat_id_by_grpid(context, contact.addr).await?
+            if let Some((chat_id, _, _)) =
+                chat::get_chat_id_by_grpid(context, &contact.addr).await?
             {
                 chat_id.unblock(context).await?;
             }
@@ -1292,14 +1300,35 @@ pub(crate) async fn set_status(
     Ok(())
 }
 
+/// Updates last seen timestamp of the contact if it is earlier than the given `timestamp`.
+pub(crate) async fn update_last_seen(
+    context: &Context,
+    contact_id: u32,
+    timestamp: i64,
+) -> Result<()> {
+    ensure!(
+        contact_id > DC_CONTACT_ID_LAST_SPECIAL,
+        "Can not update special contact last seen timestamp"
+    );
+
+    context
+        .sql
+        .execute(
+            "UPDATE contacts SET last_seen = ?1 WHERE last_seen < ?1 AND id = ?2",
+            paramsv![timestamp, contact_id],
+        )
+        .await?;
+    Ok(())
+}
+
 /// Normalize a name.
 ///
 /// - Remove quotes (come from some bad MUA implementations)
 /// - Trims the resulting string
 ///
 /// Typically, this function is not needed as it is called implicitly by `Contact::add_address_book`.
-pub fn normalize_name(full_name: impl AsRef<str>) -> String {
-    let full_name = full_name.as_ref().trim();
+pub fn normalize_name(full_name: &str) -> String {
+    let full_name = full_name.trim();
     if full_name.is_empty() {
         return full_name.into();
     }
@@ -1342,44 +1371,45 @@ fn cat_fingerprint(
 impl Context {
     /// determine whether the specified addr maps to the/a self addr
     pub async fn is_self_addr(&self, addr: &str) -> Result<bool> {
-        let self_addr = self
-            .get_config(Config::ConfiguredAddr)
-            .await?
-            .ok_or_else(|| format_err!("Not configured"))?;
-
-        Ok(addr_cmp(self_addr, addr))
+        if let Some(self_addr) = self.get_config(Config::ConfiguredAddr).await? {
+            Ok(addr_cmp(&self_addr, addr))
+        } else {
+            Ok(false)
+        }
     }
 }
 
-pub fn addr_cmp(addr1: impl AsRef<str>, addr2: impl AsRef<str>) -> bool {
-    let norm1 = addr_normalize(addr1.as_ref()).to_lowercase();
-    let norm2 = addr_normalize(addr2.as_ref()).to_lowercase();
+pub fn addr_cmp(addr1: &str, addr2: &str) -> bool {
+    let norm1 = addr_normalize(addr1).to_lowercase();
+    let norm2 = addr_normalize(addr2).to_lowercase();
 
     norm1 == norm2
 }
 
 fn split_address_book(book: &str) -> Vec<(&str, &str)> {
     book.lines()
+        .collect::<Vec<&str>>()
         .chunks(2)
         .into_iter()
-        .filter_map(|mut chunk| {
-            let name = chunk.next().unwrap();
-            let addr = match chunk.next() {
-                Some(a) => a,
-                None => return None,
-            };
-            Some((name, addr))
+        .filter_map(|chunk| {
+            let name = chunk.get(0)?;
+            let addr = chunk.get(1)?;
+            Some((*name, *addr))
         })
         .collect()
 }
 
 #[cfg(test)]
 mod tests {
+    use async_std::fs::File;
+    use async_std::io::WriteExt;
+
     use super::*;
 
     use crate::chat::send_text_msg;
+    use crate::dc_receive_imf::dc_receive_imf;
     use crate::message::Message;
-    use crate::test_utils::TestContext;
+    use crate::test_utils::{self, TestContext};
 
     #[test]
     fn test_may_be_valid_addr() {
@@ -1494,11 +1524,11 @@ mod tests {
     #[async_std::test]
     async fn test_is_self_addr() -> Result<()> {
         let t = TestContext::new().await;
-        assert!(t.is_self_addr("me@me.org").await.is_err());
-
-        let addr = t.configure_alice().await;
         assert_eq!(t.is_self_addr("me@me.org").await?, false);
-        assert_eq!(t.is_self_addr(&addr).await?, true);
+
+        t.configure_addr("you@you.net").await;
+        assert_eq!(t.is_self_addr("me@me.org").await?, false);
+        assert_eq!(t.is_self_addr("you@you.net").await?, true);
 
         Ok(())
     }
@@ -1861,7 +1891,7 @@ mod tests {
 
         let alice = TestContext::new_alice().await;
 
-        let id = Contact::lookup_id_by_addr(&alice.ctx, "alice@example.com", Origin::Unknown)
+        let id = Contact::lookup_id_by_addr(&alice.ctx, "alice@example.org", Origin::Unknown)
             .await
             .unwrap();
         assert_eq!(id, Some(DC_CONTACT_ID_SELF));
@@ -1886,7 +1916,7 @@ mod tests {
 
         let bob = TestContext::new_bob().await;
         let chat_alice = bob
-            .create_chat_with_contact("Alice", "alice@example.com")
+            .create_chat_with_contact("Alice", "alice@example.org")
             .await;
         send_text_msg(&bob, chat_alice.id, "Hello".to_string()).await?;
         let msg = bob.pop_sent_msg().await;
@@ -1898,7 +1928,7 @@ mod tests {
             "End-to-end encryption preferred.
 Fingerprints:
 
-alice@example.com:
+alice@example.org:
 2E6F A2CB 23B5 32D7 2863
 4B58 64B0 8F61 A9ED 9443
 
@@ -1949,7 +1979,7 @@ CCCB 5AA9 F6E1 141C 9431
 
         // Bob replies.
         let chat = bob
-            .create_chat_with_contact("Alice", "alice@example.com")
+            .create_chat_with_contact("Alice", "alice@example.org")
             .await;
 
         send_text_msg(&bob, chat.id, "Reply".to_string()).await?;
@@ -1975,4 +2005,94 @@ CCCB 5AA9 F6E1 141C 9431
 
         Ok(())
     }
+
+    /// Tests that DC_EVENT_SELFAVATAR_CHANGED is emitted on avatar changes.
+    #[async_std::test]
+    async fn test_selfavatar_changed_event() -> Result<()> {
+        // Alice has two devices.
+        let alice1 = TestContext::new_alice().await;
+        let alice2 = TestContext::new_alice().await;
+
+        // Bob has one device.
+        let bob = TestContext::new_bob().await;
+
+        assert_eq!(alice1.get_config(Config::Selfavatar).await?, None);
+
+        let avatar_src = alice1.get_blobdir().join("avatar.png");
+        File::create(&avatar_src)
+            .await?
+            .write_all(test_utils::AVATAR_900x900_BYTES)
+            .await?;
+
+        alice1
+            .set_config(Config::Selfavatar, Some(avatar_src.to_str().unwrap()))
+            .await?;
+
+        alice1
+            .evtracker
+            .get_matching(|e| matches!(e, EventType::SelfavatarChanged))
+            .await;
+
+        // Bob sends a message so that Alice can encrypt to him.
+        let chat = bob
+            .create_chat_with_contact("Alice", "alice@example.org")
+            .await;
+
+        send_text_msg(&bob, chat.id, "Reply".to_string()).await?;
+        let sent_msg = bob.pop_sent_msg().await;
+        alice1.recv_msg(&sent_msg).await;
+        alice2.recv_msg(&sent_msg).await;
+
+        // Alice sends a message.
+        let alice1_chat_id = alice1.get_last_msg().await.chat_id;
+        alice1_chat_id.accept(&alice1).await?;
+        send_text_msg(&alice1, alice1_chat_id, "Hello".to_string()).await?;
+        let sent_msg = alice1.pop_sent_msg().await;
+
+        // The message is encrypted.
+        let message = Message::load_from_db(&alice1, sent_msg.sender_msg_id).await?;
+        assert!(message.get_showpadlock());
+
+        // Alice's second device receives a copy of the outgoing message.
+        alice2.recv_msg(&sent_msg).await;
+
+        // Alice's second device applies the selfavatar.
+        assert!(alice2.get_config(Config::Selfavatar).await?.is_some());
+        alice2
+            .evtracker
+            .get_matching(|e| matches!(e, EventType::SelfavatarChanged))
+            .await;
+
+        Ok(())
+    }
+
+    #[async_std::test]
+    async fn test_last_seen() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+
+        let (contact_id, _) =
+            Contact::add_or_lookup(&alice, "Bob", "bob@example.net", Origin::ManuallyCreated)
+                .await?;
+        let contact = Contact::load_from_db(&alice, contact_id).await?;
+        assert_eq!(contact.last_seen(), 0);
+
+        let mime = br#"Subject: Hello
+Message-ID: message@example.net
+To: Alice <alice@example.org>
+From: Bob <bob@example.net>
+Content-Type: text/plain; charset=utf-8; format=flowed; delsp=no
+Chat-Version: 1.0
+Date: Sun, 22 Mar 2020 22:37:55 +0000
+
+Hi."#;
+        dc_receive_imf(&alice, mime, "Inbox", false).await?;
+        let msg = alice.get_last_msg().await;
+
+        let timestamp = msg.get_timestamp();
+        assert!(timestamp > 0);
+        let contact = Contact::load_from_db(&alice, contact_id).await?;
+        assert_eq!(contact.last_seen(), timestamp);
+
+        Ok(())
+    }
 }

src/context.rs

@@ -42,12 +42,9 @@ impl Deref for Context {
 
 #[derive(Debug)]
 pub struct InnerContext {
-    /// Database file path
-    pub(crate) dbfile: PathBuf,
     /// Blob directory path
     pub(crate) blobdir: PathBuf,
     pub(crate) sql: Sql,
-    pub(crate) os_name: Option<String>,
     pub(crate) bob: Bob,
     pub(crate) last_smeared_timestamp: RwLock<i64>,
     pub(crate) running_state: RwLock<RunningState>,
@@ -76,11 +73,16 @@ pub struct InnerContext {
     pub(crate) id: u32,
 
     creation_time: SystemTime,
+
+    /// The text of the last error logged and emitted as an event.
+    /// If the ui wants to display an error after a failure,
+    /// `last_error` should be used to avoid races with the event thread.
+    pub(crate) last_error: RwLock<String>,
 }
 
 #[derive(Debug)]
 pub struct RunningState {
-    pub ongoing_running: bool,
+    ongoing_running: bool,
     shall_stop_ongoing: bool,
     cancel_sender: Option<Sender<()>>,
 }
@@ -102,10 +104,19 @@ pub fn get_info() -> BTreeMap<&'static str, String> {
 }
 
 impl Context {
-    /// Creates new context.
-    pub async fn new(os_name: String, dbfile: PathBuf, id: u32) -> Result<Context> {
-        // pretty_env_logger::try_init_timed().ok();
+    /// Creates new context and opens the database.
+    pub async fn new(dbfile: PathBuf, id: u32) -> Result<Context> {
+        let context = Self::new_closed(dbfile, id).await?;
 
+        // Open the database if is not encrypted.
+        if context.check_passphrase("".to_string()).await? {
+            context.sql.open(&context, "".to_string()).await?;
+        }
+        Ok(context)
+    }
+
+    /// Creates new context without opening the database.
+    pub async fn new_closed(dbfile: PathBuf, id: u32) -> Result<Context> {
         let mut blob_fname = OsString::new();
         blob_fname.push(dbfile.file_name().unwrap_or_default());
         blob_fname.push("-blobs");
@@ -113,11 +124,38 @@ impl Context {
         if !blobdir.exists().await {
             async_std::fs::create_dir_all(&blobdir).await?;
         }
-        Context::with_blobdir(os_name, dbfile, blobdir, id).await
+        let context = Context::with_blobdir(dbfile, blobdir, id).await?;
+        Ok(context)
+    }
+
+    /// Opens the database with the given passphrase.
+    ///
+    /// Returns true if passphrase is correct, false is passphrase is not correct. Fails on other
+    /// errors.
+    pub async fn open(&self, passphrase: String) -> Result<bool> {
+        if self.sql.check_passphrase(passphrase.clone()).await? {
+            self.sql.open(self, passphrase).await?;
+            Ok(true)
+        } else {
+            Ok(false)
+        }
+    }
+
+    /// Returns true if database is open.
+    pub async fn is_open(&self) -> bool {
+        self.sql.is_open().await
+    }
+
+    /// Tests the database passphrase.
+    ///
+    /// Returns true if passphrase is correct.
+    ///
+    /// Fails if database is already open.
+    pub(crate) async fn check_passphrase(&self, passphrase: String) -> Result<bool> {
+        self.sql.check_passphrase(passphrase).await
     }
 
     pub(crate) async fn with_blobdir(
-        os_name: String,
         dbfile: PathBuf,
         blobdir: PathBuf,
         id: u32,
@@ -131,10 +169,8 @@ impl Context {
         let inner = InnerContext {
             id,
             blobdir,
-            dbfile,
-            os_name: Some(os_name),
             running_state: RwLock::new(Default::default()),
-            sql: Sql::new(),
+            sql: Sql::new(dbfile),
             bob: Default::default(),
             last_smeared_timestamp: RwLock::new(0),
             generating_key_mutex: Mutex::new(()),
@@ -147,12 +183,12 @@ impl Context {
             quota: RwLock::new(None),
             creation_time: std::time::SystemTime::now(),
             last_full_folder_scan: Mutex::new(None),
+            last_error: RwLock::new("".to_string()),
         };
 
         let ctx = Context {
             inner: Arc::new(inner),
         };
-        ctx.sql.open(&ctx, &ctx.dbfile, false).await?;
 
         Ok(ctx)
     }
@@ -190,7 +226,7 @@ impl Context {
 
     /// Returns database file path.
     pub fn get_dbfile(&self) -> &Path {
-        self.dbfile.as_path()
+        self.sql.dbfile.as_path()
     }
 
     /// Returns blob directory path.
@@ -221,7 +257,7 @@ impl Context {
 
     // Ongoing process allocation/free/check
 
-    pub async fn alloc_ongoing(&self) -> Result<Receiver<()>> {
+    pub(crate) async fn alloc_ongoing(&self) -> Result<Receiver<()>> {
         if self.has_ongoing().await {
             bail!("There is already another ongoing process running.");
         }
@@ -237,7 +273,7 @@ impl Context {
         Ok(receiver)
     }
 
-    pub async fn free_ongoing(&self) {
+    pub(crate) async fn free_ongoing(&self) {
         let s_a = &self.running_state;
         let mut s = s_a.write().await;
 
@@ -246,7 +282,7 @@ impl Context {
         s.cancel_sender.take();
     }
 
-    pub async fn has_ongoing(&self) -> bool {
+    pub(crate) async fn has_ongoing(&self) -> bool {
         let s_a = &self.running_state;
         let s = s_a.read().await;
 
@@ -271,7 +307,7 @@ impl Context {
         };
     }
 
-    pub async fn shall_stop_ongoing(&self) -> bool {
+    pub(crate) async fn shall_stop_ongoing(&self) -> bool {
         self.running_state.read().await.shall_stop_ongoing
     }
 
@@ -303,6 +339,7 @@ impl Context {
         let e2ee_enabled = self.get_config_int(Config::E2eeEnabled).await?;
         let mdns_enabled = self.get_config_int(Config::MdnsEnabled).await?;
         let bcc_self = self.get_config_int(Config::BccSelf).await?;
+        let send_sync_msgs = self.get_config_int(Config::SendSyncMsgs).await?;
 
         let prv_key_cnt = self
             .sql
@@ -318,9 +355,7 @@ impl Context {
             Err(err) => format!("<key failure: {}>", err),
         };
 
-        let inbox_watch = self.get_config_int(Config::InboxWatch).await?;
         let sentbox_watch = self.get_config_int(Config::SentboxWatch).await?;
-        let mvbox_watch = self.get_config_int(Config::MvboxWatch).await?;
         let mvbox_move = self.get_config_int(Config::MvboxMove).await?;
         let sentbox_move = self.get_config_int(Config::SentboxMove).await?;
         let folders_configured = self
@@ -348,6 +383,13 @@ impl Context {
         res.insert("number_of_contacts", contacts.to_string());
         res.insert("database_dir", self.get_dbfile().display().to_string());
         res.insert("database_version", dbversion.to_string());
+        res.insert(
+            "database_encrypted",
+            self.sql
+                .is_encrypted()
+                .await
+                .map_or_else(|| "closed".to_string(), |b| b.to_string()),
+        );
         res.insert("journal_mode", journal_mode);
         res.insert("blobdir", self.get_blobdir().display().to_string());
         res.insert("display_name", displayname.unwrap_or_else(|| unset.into()));
@@ -371,9 +413,13 @@ impl Context {
             "show_emails",
             self.get_config_int(Config::ShowEmails).await?.to_string(),
         );
-        res.insert("inbox_watch", inbox_watch.to_string());
+        res.insert(
+            "download_limit",
+            self.get_config_int(Config::DownloadLimit)
+                .await?
+                .to_string(),
+        );
         res.insert("sentbox_watch", sentbox_watch.to_string());
-        res.insert("mvbox_watch", mvbox_watch.to_string());
         res.insert("mvbox_move", mvbox_move.to_string());
         res.insert("sentbox_move", sentbox_move.to_string());
         res.insert("folders_configured", folders_configured.to_string());
@@ -386,6 +432,7 @@ impl Context {
             self.get_config_int(Config::KeyGenType).await?.to_string(),
         );
         res.insert("bcc_self", bcc_self.to_string());
+        res.insert("send_sync_msgs", send_sync_msgs.to_string());
         res.insert("private_key_count", prv_key_cnt.to_string());
         res.insert("public_key_count", pub_key_cnt.to_string());
         res.insert("fingerprint", fingerprint_str);
@@ -567,14 +614,14 @@ impl Context {
         Ok(spam.as_deref() == Some(folder_name))
     }
 
-    pub fn derive_blobdir(dbfile: &PathBuf) -> PathBuf {
+    pub(crate) fn derive_blobdir(dbfile: &PathBuf) -> PathBuf {
         let mut blob_fname = OsString::new();
         blob_fname.push(dbfile.file_name().unwrap_or_default());
         blob_fname.push("-blobs");
         dbfile.with_file_name(blob_fname)
     }
 
-    pub fn derive_walfile(dbfile: &PathBuf) -> PathBuf {
+    pub(crate) fn derive_walfile(dbfile: &PathBuf) -> PathBuf {
         let mut wal_fname = OsString::new();
         wal_fname.push(dbfile.file_name().unwrap_or_default());
         wal_fname.push("-wal");
@@ -631,16 +678,21 @@ mod tests {
     use crate::dc_tools::dc_create_outgoing_rfc724_mid;
     use crate::message::Message;
     use crate::test_utils::TestContext;
+    use anyhow::Context as _;
     use std::time::Duration;
     use strum::IntoEnumIterator;
+    use tempfile::tempdir;
 
     #[async_std::test]
-    async fn test_wrong_db() {
-        let tmp = tempfile::tempdir().unwrap();
+    async fn test_wrong_db() -> Result<()> {
+        let tmp = tempfile::tempdir()?;
         let dbfile = tmp.path().join("db.sqlite");
-        std::fs::write(&dbfile, b"123").unwrap();
-        let res = Context::new("FakeOs".into(), dbfile.into(), 1).await;
-        assert!(res.is_err());
+        std::fs::write(&dbfile, b"123")?;
+        let res = Context::new(dbfile.into(), 1).await?;
+
+        // Broken database is indistinguishable from encrypted one.
+        assert_eq!(res.is_open().await, false);
+        Ok(())
     }
 
     #[async_std::test]
@@ -657,7 +709,7 @@ mod tests {
             .unwrap();
         let msg = format!(
             "From: {}\n\
-             To: alice@example.com\n\
+             To: alice@example.org\n\
              Message-ID: <{}>\n\
              Chat-Version: 1.0\n\
              Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
@@ -667,7 +719,7 @@ mod tests {
             dc_create_outgoing_rfc724_mid(None, contact.get_addr())
         );
         println!("{}", msg);
-        dc_receive_imf(t, msg.as_bytes(), "INBOX", 1, false)
+        dc_receive_imf(t, msg.as_bytes(), "INBOX", false)
             .await
             .unwrap();
     }
@@ -790,9 +842,7 @@ mod tests {
     async fn test_blobdir_exists() {
         let tmp = tempfile::tempdir().unwrap();
         let dbfile = tmp.path().join("db.sqlite");
-        Context::new("FakeOS".into(), dbfile.into(), 1)
-            .await
-            .unwrap();
+        Context::new(dbfile.into(), 1).await.unwrap();
         let blobdir = tmp.path().join("db.sqlite-blobs");
         assert!(blobdir.is_dir());
     }
@@ -803,7 +853,7 @@ mod tests {
         let dbfile = tmp.path().join("db.sqlite");
         let blobdir = tmp.path().join("db.sqlite-blobs");
         std::fs::write(&blobdir, b"123").unwrap();
-        let res = Context::new("FakeOS".into(), dbfile.into(), 1).await;
+        let res = Context::new(dbfile.into(), 1).await;
         assert!(res.is_err());
     }
 
@@ -813,9 +863,7 @@ mod tests {
         let subdir = tmp.path().join("subdir");
         let dbfile = subdir.join("db.sqlite");
         let dbfile2 = dbfile.clone();
-        Context::new("FakeOS".into(), dbfile.into(), 1)
-            .await
-            .unwrap();
+        Context::new(dbfile.into(), 1).await.unwrap();
         assert!(subdir.is_dir());
         assert!(dbfile2.is_file());
     }
@@ -825,7 +873,7 @@ mod tests {
         let tmp = tempfile::tempdir().unwrap();
         let dbfile = tmp.path().join("db.sqlite");
         let blobdir = PathBuf::new();
-        let res = Context::with_blobdir("FakeOS".into(), dbfile.into(), blobdir, 1).await;
+        let res = Context::with_blobdir(dbfile.into(), blobdir, 1).await;
         assert!(res.is_err());
     }
 
@@ -834,7 +882,7 @@ mod tests {
         let tmp = tempfile::tempdir().unwrap();
         let dbfile = tmp.path().join("db.sqlite");
         let blobdir = tmp.path().join("blobs");
-        let res = Context::with_blobdir("FakeOS".into(), dbfile.into(), blobdir.into(), 1).await;
+        let res = Context::with_blobdir(dbfile.into(), blobdir.into(), 1).await;
         assert!(res.is_err());
     }
 
@@ -996,4 +1044,29 @@ mod tests {
 
         Ok(())
     }
+
+    #[async_std::test]
+    async fn test_check_passphrase() -> Result<()> {
+        let dir = tempdir()?;
+        let dbfile = dir.path().join("db.sqlite");
+
+        let id = 1;
+        let context = Context::new_closed(dbfile.clone().into(), id)
+            .await
+            .context("failed to create context")?;
+        assert_eq!(context.open("foo".to_string()).await?, true);
+        assert_eq!(context.is_open().await, true);
+        drop(context);
+
+        let id = 2;
+        let context = Context::new(dbfile.into(), id)
+            .await
+            .context("failed to create context")?;
+        assert_eq!(context.is_open().await, false);
+        assert_eq!(context.check_passphrase("bar".to_string()).await?, false);
+        assert_eq!(context.open("false".to_string()).await?, false);
+        assert_eq!(context.open("foo".to_string()).await?, true);
+
+        Ok(())
+    }
 }

src/dc_tools.rs

@@ -5,6 +5,7 @@ use core::cmp::{max, min};
 use std::borrow::Cow;
 use std::fmt;
 use std::io::Cursor;
+use std::str::from_utf8;
 use std::str::FromStr;
 use std::time::{Duration, SystemTime};
 
@@ -12,8 +13,11 @@ use async_std::path::{Path, PathBuf};
 use async_std::prelude::*;
 use async_std::{fs, io};
 
-use anyhow::{bail, Error};
+use anyhow::Error;
 use chrono::{Local, TimeZone};
+use mailparse::dateparse;
+use mailparse::headers::Headers;
+use mailparse::MailHeaderMap;
 use rand::{thread_rng, Rng};
 
 use crate::chat::{add_device_msg, add_device_msg_with_importance};
@@ -84,9 +88,9 @@ pub(crate) fn dc_gm2local_offset() -> i64 {
 //   but at max `MAX_SECONDS_TO_LEND_FROM_FUTURE`
 const MAX_SECONDS_TO_LEND_FROM_FUTURE: i64 = 5;
 
-// returns the currently smeared timestamp,
-// may be used to check if call to dc_create_smeared_timestamp() is needed or not.
-// the returned timestamp MUST NOT be used to be sent out or saved in the database!
+/// Returns the current smeared timestamp,
+///
+/// The returned timestamp MUST NOT be sent out.
 pub(crate) async fn dc_smeared_time(context: &Context) -> i64 {
     let mut now = time();
     let ts = *context.last_smeared_timestamp.read().await;
@@ -97,7 +101,7 @@ pub(crate) async fn dc_smeared_time(context: &Context) -> i64 {
     now
 }
 
-// returns a timestamp that is guaranteed to be unique.
+/// Returns a timestamp that is guaranteed to be unique.
 pub(crate) async fn dc_create_smeared_timestamp(context: &Context) -> i64 {
     let now = time();
     let mut ret = now;
@@ -191,44 +195,26 @@ async fn maybe_warn_on_outdated(context: &Context, now: i64, approx_compile_time
 }
 
 /* Message-ID tools */
+
+/// Generate an ID. The generated ID should be as short and as unique as possible:
+/// - short, because it may also used as part of Message-ID headers or in QR codes
+/// - unique as two IDs generated on two devices should not be the same. However, collisions are not world-wide but only by the few contacts.
+/// IDs generated by this function are 66 bit wide and are returned as 11 base64 characters.
+///
+/// Additional information when used as a message-id or group-id:
+/// - for OUTGOING messages this ID is written to the header as `Chat-Group-ID:` and is added to the message ID as Gr.<grpid>.<random>@<random>
+/// - for INCOMING messages, the ID is taken from the Chat-Group-ID-header or from the Message-ID in the In-Reply-To: or References:-Header
+/// - the group-id should be a string with the characters [a-zA-Z0-9\-_]
 pub(crate) fn dc_create_id() -> String {
-    /* generate an id. the generated ID should be as short and as unique as possible:
-    - short, because it may also used as part of Message-ID headers or in QR codes
-    - unique as two IDs generated on two devices should not be the same. However, collisions are not world-wide but only by the few contacts.
-    IDs generated by this function are 66 bit wide and are returned as 11 base64 characters.
-    If possible, RNG of OpenSSL is used.
-
-    Additional information when used as a message-id or group-id:
-    - for OUTGOING messages this ID is written to the header as `Chat-Group-ID:` and is added to the message ID as Gr.<grpid>.<random>@<random>
-    - for INCOMING messages, the ID is taken from the Chat-Group-ID-header or from the Message-ID in the In-Reply-To: or References:-Header
-    - the group-id should be a string with the characters [a-zA-Z0-9\-_] */
-
+    // ThreadRng implements CryptoRng trait and is supposed to be cryptographically secure.
     let mut rng = thread_rng();
-    let buf: [u32; 3] = [rng.gen(), rng.gen(), rng.gen()];
 
-    encode_66bits_as_base64(buf[0usize], buf[1usize], buf[2usize])
-}
+    // Generate 72 random bits.
+    let mut arr = [0u8; 9];
+    rng.fill(&mut arr[..]);
 
-/// Encode 66 bits as a base64 string.
-/// This is useful for ID generating with short strings as we save 5 character
-/// in each id compared to 64 bit hex encoding. For a typical group ID, these
-/// are 10 characters (grpid+msgid):
-///    hex:    64 bit, 4 bits/character, length = 64/4 = 16 characters
-///    base64: 64 bit, 6 bits/character, length = 64/6 = 11 characters (plus 2 additional bits)
-/// Only the lower 2 bits of `fill` are used.
-fn encode_66bits_as_base64(v1: u32, v2: u32, fill: u32) -> String {
-    use byteorder::{BigEndian, WriteBytesExt};
-
-    let mut wrapped_writer = Vec::new();
-    {
-        let mut enc = base64::write::EncoderWriter::new(&mut wrapped_writer, base64::URL_SAFE);
-        enc.write_u32::<BigEndian>(v1).unwrap();
-        enc.write_u32::<BigEndian>(v2).unwrap();
-        enc.write_u8(((fill & 0x3) as u8) << 6).unwrap();
-        enc.finish().unwrap();
-    }
-    assert_eq!(wrapped_writer.pop(), Some(b'A')); // Remove last "A"
-    String::from_utf8(wrapped_writer).unwrap()
+    // Take 11 base64 characters containing 66 random bits.
+    base64::encode(&arr).chars().take(11).collect()
 }
 
 /// Function generates a Message-ID that can be used for a new outgoing message.
@@ -350,63 +336,6 @@ pub async fn dc_delete_files_in_dir(context: &Context, path: impl AsRef<Path>) {
     }
 }
 
-pub(crate) async fn dc_copy_file(
-    context: &Context,
-    src_path: impl AsRef<Path>,
-    dest_path: impl AsRef<Path>,
-) -> bool {
-    let src_abs = dc_get_abs_path(context, &src_path);
-    let mut src_file = match fs::File::open(&src_abs).await {
-        Ok(file) => file,
-        Err(err) => {
-            warn!(
-                context,
-                "failed to open for read '{}': {}",
-                src_abs.display(),
-                err
-            );
-            return false;
-        }
-    };
-
-    let dest_abs = dc_get_abs_path(context, &dest_path);
-    let mut dest_file = match fs::OpenOptions::new()
-        .create_new(true)
-        .write(true)
-        .open(&dest_abs)
-        .await
-    {
-        Ok(file) => file,
-        Err(err) => {
-            warn!(
-                context,
-                "failed to open for write '{}': {}",
-                dest_abs.display(),
-                err
-            );
-            return false;
-        }
-    };
-
-    match io::copy(&mut src_file, &mut dest_file).await {
-        Ok(_) => true,
-        Err(err) => {
-            error!(
-                context,
-                "Cannot copy \"{}\" to \"{}\": {}",
-                src_abs.display(),
-                dest_abs.display(),
-                err
-            );
-            {
-                // Attempt to remove the failed file, swallow errors resulting from that.
-                fs::remove_file(dest_abs).await.ok();
-            }
-            false
-        }
-    }
-}
-
 pub(crate) async fn dc_create_folder(
     context: &Context,
     path: impl AsRef<Path>,
@@ -504,33 +433,6 @@ pub fn dc_open_file_std<P: AsRef<std::path::Path>>(
     }
 }
 
-/// Returns Ok((temp_path, dest_path)) on success. The backup can then be written to temp_path. If the backup succeeded,
-/// it can be renamed to dest_path. This guarantees that the backup is complete.
-pub(crate) async fn get_next_backup_path(
-    folder: impl AsRef<Path>,
-    backup_time: i64,
-) -> Result<(PathBuf, PathBuf), Error> {
-    let folder = PathBuf::from(folder.as_ref());
-    let stem = chrono::NaiveDateTime::from_timestamp(backup_time, 0)
-        // Don't change this file name format, in has_backup() we use string comparison to determine which backup is newer:
-        .format("delta-chat-backup-%Y-%m-%d")
-        .to_string();
-
-    // 64 backup files per day should be enough for everyone
-    for i in 0..64 {
-        let mut tempfile = folder.clone();
-        tempfile.push(format!("{}-{:02}.tar.part", stem, i));
-
-        let mut destfile = folder.clone();
-        destfile.push(format!("{}-{:02}.tar", stem, i));
-
-        if !tempfile.exists().await && !destfile.exists().await {
-            return Ok((tempfile, destfile));
-        }
-    }
-    bail!("could not create backup file, disk full?");
-}
-
 pub(crate) fn time() -> i64 {
     SystemTime::now()
         .duration_since(SystemTime::UNIX_EPOCH)
@@ -670,13 +572,144 @@ pub fn remove_subject_prefix(last_subject: &str) -> String {
         .to_string()
 }
 
+// Types and methods to create hop-info for message-info
+
+fn extract_address_from_receive_header<'a>(header: &'a str, start: &str) -> Option<&'a str> {
+    let header_len = header.len();
+    header.find(start).and_then(|mut begin| {
+        begin += start.len();
+        let end = header
+            .get(begin..)?
+            .find(|c: char| c.is_whitespace())
+            .unwrap_or(header_len);
+        header.get(begin..begin + end)
+    })
+}
+
+pub(crate) fn parse_receive_header(header: &str) -> String {
+    let header = header.replace(&['\r', '\n'][..], "");
+    let mut hop_info = String::from("Hop: ");
+
+    if let Some(from) = extract_address_from_receive_header(&header, "from ") {
+        hop_info += &format!("From: {}; ", from.trim());
+    }
+
+    if let Some(by) = extract_address_from_receive_header(&header, "by ") {
+        hop_info += &format!("By: {}; ", by.trim());
+    }
+
+    if let Ok(date) = dateparse(&header) {
+        // In tests, use the UTC timezone so that the test is reproducible
+        #[cfg(test)]
+        let date_obj = chrono::Utc.timestamp(date, 0);
+        #[cfg(not(test))]
+        let date_obj = Local.timestamp(date, 0);
+
+        hop_info += &format!("Date: {}", date_obj.to_rfc2822());
+    };
+
+    hop_info
+}
+
+/// parses "receive"-headers
+pub(crate) fn parse_receive_headers(headers: &Headers) -> String {
+    headers
+        .get_all_headers("Received")
+        .iter()
+        .rev()
+        .filter_map(|header_map_item| from_utf8(header_map_item.get_value_raw()).ok())
+        .map(parse_receive_header)
+        .collect::<Vec<_>>()
+        .join("\n")
+}
+
 #[cfg(test)]
 mod tests {
     #![allow(clippy::indexing_slicing)]
 
     use super::*;
 
-    use crate::test_utils::TestContext;
+    use crate::{
+        config::Config, dc_receive_imf::dc_receive_imf, message::get_msg_info,
+        test_utils::TestContext,
+    };
+
+    #[test]
+    fn test_parse_receive_headers() {
+        // Test `parse_receive_headers()` with some more-or-less random emails from the test-data
+        let raw = include_bytes!("../test-data/message/mail_with_cc.txt");
+        let expected =
+            "Hop: From: localhost; By: hq5.merlinux.eu; Date: Sat, 14 Sep 2019 17:00:22 +0000\n\
+             Hop: From: hq5.merlinux.eu; By: hq5.merlinux.eu; Date: Sat, 14 Sep 2019 17:00:25 +0000";
+        check_parse_receive_headers(raw, expected);
+
+        let raw = include_bytes!("../test-data/message/wrong-html.eml");
+        let expected =
+            "Hop: From: oxbsltgw18.schlund.de; By: mrelayeu.kundenserver.de; Date: Thu, 06 Aug 2020 16:40:31 +0000\n\
+             Hop: From: mout.kundenserver.de; By: dd37930.kasserver.com; Date: Thu, 06 Aug 2020 16:40:32 +0000";
+        check_parse_receive_headers(raw, expected);
+
+        let raw = include_bytes!("../test-data/message/posteo_ndn.eml");
+        let expected =
+            "Hop: By: mout01.posteo.de; Date: Tue, 09 Jun 2020 18:44:22 +0000\n\
+             Hop: From: mout01.posteo.de; By: mx04.posteo.de; Date: Tue, 09 Jun 2020 18:44:22 +0000\n\
+             Hop: From: mx04.posteo.de; By: mailin06.posteo.de; Date: Tue, 09 Jun 2020 18:44:23 +0000\n\
+             Hop: From: mailin06.posteo.de; By: proxy02.posteo.de; Date: Tue, 09 Jun 2020 18:44:23 +0000\n\
+             Hop: From: proxy02.posteo.de; By: proxy02.posteo.name; Date: Tue, 09 Jun 2020 18:44:23 +0000\n\
+             Hop: From: proxy02.posteo.name; By: dovecot03.posteo.local; Date: Tue, 09 Jun 2020 18:44:24 +0000";
+        check_parse_receive_headers(raw, expected);
+    }
+
+    fn check_parse_receive_headers(raw: &[u8], expected: &str) {
+        let mail = mailparse::parse_mail(raw).unwrap();
+        let hop_info = parse_receive_headers(&mail.get_headers());
+        assert_eq!(hop_info, expected)
+    }
+
+    #[async_std::test]
+    async fn test_parse_receive_headers_integration() {
+        let raw = include_bytes!("../test-data/message/mail_with_cc.txt");
+        let expected = r"State: Fresh
+
+hi
+
+Message-ID: 2dfdbde7@example.org
+
+Hop: From: localhost; By: hq5.merlinux.eu; Date: Sat, 14 Sep 2019 17:00:22 +0000
+Hop: From: hq5.merlinux.eu; By: hq5.merlinux.eu; Date: Sat, 14 Sep 2019 17:00:25 +0000";
+        check_parse_receive_headers_integration(raw, expected).await;
+
+        let raw = include_bytes!("../test-data/message/encrypted_with_received_headers.eml");
+        let expected = "State: Fresh, Encrypted
+
+Re: Message from alice@example.org
+
+hi back\r\n\
+\r\n\
+-- \r\n\
+Sent with my Delta Chat Messenger: https://delta.chat
+
+Message-ID: Mr.adQpEwndXLH.LPDdlFVJ7wG@example.net
+
+Hop: From: [127.0.0.1]; By: mail.example.org; Date: Mon, 27 Dec 2021 11:21:21 +0000
+Hop: From: mout.example.org; By: hq5.example.org; Date: Mon, 27 Dec 2021 11:21:22 +0000
+Hop: From: hq5.example.org; By: hq5.example.org; Date: Mon, 27 Dec 2021 11:21:22 +0000";
+        check_parse_receive_headers_integration(raw, expected).await;
+    }
+
+    async fn check_parse_receive_headers_integration(raw: &[u8], expected: &str) {
+        let t = TestContext::new_alice().await;
+        t.set_config(Config::ShowEmails, Some("2")).await.unwrap();
+        dc_receive_imf(&t, raw, "INBOX", false).await.unwrap();
+        let msg = t.get_last_msg().await;
+        let msg_info = get_msg_info(&t, msg.id).await.unwrap();
+
+        // Ignore the first rows of the msg_info because they contain a
+        // received time that depends on the test time which makes it impossible to
+        // compare with a static string
+        let capped_result = &msg_info[msg_info.find("State").unwrap()..];
+        assert_eq!(expected, capped_result);
+    }
 
     #[test]
     fn test_rust_ftoa() {
@@ -729,26 +762,6 @@ mod tests {
         assert_eq!(buf.len(), 11);
     }
 
-    #[test]
-    fn test_encode_66bits_as_base64() {
-        assert_eq!(
-            encode_66bits_as_base64(0x01234567, 0x89abcdef, 0),
-            "ASNFZ4mrze8"
-        );
-        assert_eq!(
-            encode_66bits_as_base64(0x01234567, 0x89abcdef, 1),
-            "ASNFZ4mrze9"
-        );
-        assert_eq!(
-            encode_66bits_as_base64(0x01234567, 0x89abcdef, 2),
-            "ASNFZ4mrze-"
-        );
-        assert_eq!(
-            encode_66bits_as_base64(0x01234567, 0x89abcdef, 3),
-            "ASNFZ4mrze_"
-        );
-    }
-
     #[test]
     fn test_dc_extract_grpid_from_rfc724_mid() {
         // Should return None if we pass invalid mid
@@ -835,8 +848,8 @@ mod tests {
         assert_eq!("@d.tt".parse::<EmailAddress>().is_ok(), false);
     }
 
-    use crate::chat;
     use crate::chatlist::Chatlist;
+    use crate::{chat, test_utils};
     use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
     use proptest::prelude::*;
 
@@ -844,22 +857,18 @@ mod tests {
         #[test]
         fn test_dc_truncate(
             buf: String,
-            approx_chars in 0..10000usize
+            approx_chars in 0..100usize
         ) {
             let res = dc_truncate(&buf, approx_chars);
             let el_len = 5;
             let l = res.chars().count();
-            if approx_chars > 0 {
-                assert!(
-                    l <= approx_chars + el_len,
-                    "buf: '{}' - res: '{}' - len {}, approx {}",
-                    &buf, &res, res.len(), approx_chars
-                );
-            } else {
-                assert_eq!(&res, &buf);
-            }
+            assert!(
+                l <= approx_chars + el_len,
+                "buf: '{}' - res: '{}' - len {}, approx {}",
+                &buf, &res, res.len(), approx_chars
+            );
 
-            if approx_chars > 0 && buf.chars().count() > approx_chars + el_len {
+            if buf.chars().count() > approx_chars + el_len {
                 let l = res.len();
                 assert_eq!(&res[l-5..l], "[...]", "missing ellipsis in {}", &res);
             }
@@ -894,20 +903,7 @@ mod tests {
 
         assert!(dc_file_exist!(context, &abs_path).await);
 
-        assert!(dc_copy_file(context, "$BLOBDIR/foobar", "$BLOBDIR/dada").await);
-
-        // attempting to copy a second time should fail
-        assert!(!dc_copy_file(context, "$BLOBDIR/foobar", "$BLOBDIR/dada").await);
-
-        assert_eq!(dc_get_filebytes(context, "$BLOBDIR/dada").await, 7);
-
-        let buf = dc_read_file(context, "$BLOBDIR/dada").await.unwrap();
-
-        assert_eq!(buf.len(), 7);
-        assert_eq!(&buf, b"content");
-
         assert!(dc_delete_file(context, "$BLOBDIR/foobar").await);
-        assert!(dc_delete_file(context, "$BLOBDIR/dada").await);
         assert!(dc_create_folder(context, "$BLOBDIR/foobar-folder")
             .await
             .is_ok());
@@ -986,8 +982,7 @@ mod tests {
 
     #[test]
     fn test_get_filemeta() {
-        let data = include_bytes!("../test-data/image/avatar900x900.png");
-        let (w, h) = dc_get_filemeta(data).unwrap();
+        let (w, h) = dc_get_filemeta(test_utils::AVATAR_900x900_BYTES).unwrap();
         assert_eq!(w, 900);
         assert_eq!(h, 900);
 
@@ -1034,7 +1029,7 @@ mod tests {
         maybe_warn_on_bad_time(&t, timestamp_past, get_provider_update_timestamp()).await;
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 1);
-        let device_chat_id = chats.get_chat_id(0);
+        let device_chat_id = chats.get_chat_id(0).unwrap();
         let msgs = chat::get_chat_msgs(&t, device_chat_id, 0, None)
             .await
             .unwrap();
@@ -1072,7 +1067,7 @@ mod tests {
         .await;
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 1);
-        assert_eq!(device_chat_id, chats.get_chat_id(0));
+        assert_eq!(device_chat_id, chats.get_chat_id(0).unwrap());
         let msgs = chat::get_chat_msgs(&t, device_chat_id, 0, None)
             .await
             .unwrap();
@@ -1104,7 +1099,7 @@ mod tests {
         .await;
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 1);
-        let device_chat_id = chats.get_chat_id(0);
+        let device_chat_id = chats.get_chat_id(0).unwrap();
         let msgs = chat::get_chat_msgs(&t, device_chat_id, 0, None)
             .await
             .unwrap();
@@ -1126,7 +1121,7 @@ mod tests {
         .await;
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 1);
-        let device_chat_id = chats.get_chat_id(0);
+        let device_chat_id = chats.get_chat_id(0).unwrap();
         let msgs = chat::get_chat_msgs(&t, device_chat_id, 0, None)
             .await
             .unwrap();
@@ -1143,7 +1138,7 @@ mod tests {
         .await;
         let chats = Chatlist::try_load(&t, 0, None, None).await.unwrap();
         assert_eq!(chats.len(), 1);
-        let device_chat_id = chats.get_chat_id(0);
+        let device_chat_id = chats.get_chat_id(0).unwrap();
         let msgs = chat::get_chat_msgs(&t, device_chat_id, 0, None)
             .await
             .unwrap();

src/dehtml.rs

@@ -36,9 +36,9 @@ impl Dehtml {
             ""
         }
     }
-    fn append_prefix(&self, line_end: impl AsRef<str>) -> String {
+    fn append_prefix(&self, line_end: &str) -> String {
         // line_end is e.g. "\n\n". We add "> " if necessary.
-        line_end.as_ref().to_owned() + self.line_prefix()
+        line_end.to_string() + self.line_prefix()
     }
     fn get_add_text(&self) -> AddText {
         if self.divs_since_quote_div > 0 && self.divs_since_quoted_content_div == 0 {

src/download.rs

@@ -0,0 +1,400 @@
+//! # Download large messages manually.
+
+use anyhow::{anyhow, Result};
+use deltachat_derive::{FromSql, ToSql};
+use serde::{Deserialize, Serialize};
+
+use crate::config::Config;
+use crate::constants::Viewtype;
+use crate::context::Context;
+use crate::dc_tools::time;
+use crate::imap::{Imap, ImapActionResult};
+use crate::job::{self, Action, Job, Status};
+use crate::message::{Message, MsgId};
+use crate::mimeparser::{MimeMessage, Part};
+use crate::param::Params;
+use crate::{job_try, stock_str, EventType};
+use std::cmp::max;
+
+/// Download limits should not be used below `MIN_DOWNLOAD_LIMIT`.
+///
+/// Some messages as non-delivery-reports (NDN) or read-receipts (MDN)
+/// need to be downloaded completely to handle them correctly,
+/// eg. to assign them to the correct chat.
+/// As these messages are typically small,
+/// they're catched by `MIN_DOWNLOAD_LIMIT`.
+const MIN_DOWNLOAD_LIMIT: u32 = 32768;
+
+/// If a message is downloaded only partially
+/// and `delete_server_after` is set to small timeouts (eg. "at once"),
+/// the user might have no chance to actually download that message.
+/// `MIN_DELETE_SERVER_AFTER` increases the timeout in this case.
+pub(crate) const MIN_DELETE_SERVER_AFTER: i64 = 48 * 60 * 60;
+
+#[derive(
+    Debug,
+    Display,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    FromPrimitive,
+    ToPrimitive,
+    FromSql,
+    ToSql,
+    Serialize,
+    Deserialize,
+)]
+#[repr(u32)]
+pub enum DownloadState {
+    Done = 0,
+    Available = 10,
+    Failure = 20,
+    InProgress = 1000,
+}
+
+impl Default for DownloadState {
+    fn default() -> Self {
+        DownloadState::Done
+    }
+}
+
+impl Context {
+    // Returns validated download limit or `None` for "no limit".
+    pub(crate) async fn download_limit(&self) -> Result<Option<u32>> {
+        let download_limit = self.get_config_int(Config::DownloadLimit).await?;
+        if download_limit <= 0 {
+            Ok(None)
+        } else {
+            Ok(Some(max(MIN_DOWNLOAD_LIMIT, download_limit as u32)))
+        }
+    }
+}
+
+impl MsgId {
+    /// Schedules full message download for partially downloaded message.
+    pub async fn download_full(self, context: &Context) -> Result<()> {
+        let msg = Message::load_from_db(context, self).await?;
+        match msg.download_state() {
+            DownloadState::Done => return Err(anyhow!("Nothing to download.")),
+            DownloadState::InProgress => return Err(anyhow!("Download already in progress.")),
+            DownloadState::Available | DownloadState::Failure => {
+                self.update_download_state(context, DownloadState::InProgress)
+                    .await?;
+                job::add(
+                    context,
+                    Job::new(Action::DownloadMsg, self.to_u32(), Params::new(), 0),
+                )
+                .await?;
+            }
+        }
+        Ok(())
+    }
+
+    pub(crate) async fn update_download_state(
+        self,
+        context: &Context,
+        download_state: DownloadState,
+    ) -> Result<()> {
+        let msg = Message::load_from_db(context, self).await?;
+        context
+            .sql
+            .execute(
+                "UPDATE msgs SET download_state=? WHERE id=?;",
+                paramsv![download_state, self],
+            )
+            .await?;
+        context.emit_event(EventType::MsgsChanged {
+            chat_id: msg.chat_id,
+            msg_id: self,
+        });
+        Ok(())
+    }
+}
+
+impl Message {
+    /// Returns the download state of the message.
+    pub fn download_state(&self) -> DownloadState {
+        self.download_state
+    }
+}
+
+impl Job {
+    /// Actually download a message.
+    /// Called in response to `Action::DownloadMsg`.
+    pub(crate) async fn download_msg(&self, context: &Context, imap: &mut Imap) -> Status {
+        if let Err(err) = imap.prepare(context).await {
+            warn!(context, "download: could not connect: {:?}", err);
+            return Status::RetryNow;
+        }
+
+        let msg = job_try!(Message::load_from_db(context, MsgId::new(self.foreign_id)).await);
+        let row = job_try!(
+            context
+                .sql
+                .query_row_optional(
+                    "SELECT uid, folder FROM imap WHERE rfc724_mid=? AND target!=''",
+                    paramsv![msg.rfc724_mid],
+                    |row| {
+                        let server_uid: u32 = row.get(0)?;
+                        let server_folder: String = row.get(1)?;
+                        Ok((server_uid, server_folder))
+                    }
+                )
+                .await
+        );
+
+        if let Some((server_uid, server_folder)) = row {
+            match imap
+                .fetch_single_msg(context, &server_folder, server_uid)
+                .await
+            {
+                ImapActionResult::RetryLater | ImapActionResult::Failed => {
+                    job_try!(
+                        msg.id
+                            .update_download_state(context, DownloadState::Failure)
+                            .await
+                    );
+                    Status::Finished(Err(anyhow!("Call download_full() again to try over.")))
+                }
+                ImapActionResult::Success => {
+                    // update_download_state() not needed as receive_imf() already
+                    // set the state and emitted the event.
+                    Status::Finished(Ok(()))
+                }
+            }
+        } else {
+            // No IMAP record found, we don't know the UID and folder.
+            job_try!(
+                msg.id
+                    .update_download_state(context, DownloadState::Failure)
+                    .await
+            );
+            Status::Finished(Err(anyhow!("Call download_full() again to try over.")))
+        }
+    }
+}
+
+impl Imap {
+    /// Download a single message and pipe it to receive_imf().
+    ///
+    /// receive_imf() is not directly aware that this is a result of a call to download_msg(),
+    /// however, implicitly knows that as the existing message is flagged as being partly.
+    async fn fetch_single_msg(
+        &mut self,
+        context: &Context,
+        folder: &str,
+        uid: u32,
+    ) -> ImapActionResult {
+        if let Some(imapresult) = self
+            .prepare_imap_operation_on_msg(context, folder, uid)
+            .await
+        {
+            return imapresult;
+        }
+
+        // we are connected, and the folder is selected
+        info!(context, "Downloading message {}/{} fully...", folder, uid);
+
+        let (last_uid, _received) = match self
+            .fetch_many_msgs(context, folder, vec![uid], false, false)
+            .await
+        {
+            Ok(res) => res,
+            Err(_) => return ImapActionResult::Failed,
+        };
+        if last_uid.is_none() {
+            ImapActionResult::Failed
+        } else {
+            ImapActionResult::Success
+        }
+    }
+}
+
+impl MimeMessage {
+    /// Creates a placeholder part and add that to `parts`.
+    ///
+    /// To create the placeholder, only the outermost header can be used,
+    /// the mime-structure itself is not available.
+    ///
+    /// The placeholder part currently contains a text with size and availability of the message;
+    /// in the future, we may do more advanced things as previews here.
+    pub(crate) async fn create_stub_from_partial_download(
+        &mut self,
+        context: &Context,
+        org_bytes: u32,
+    ) -> Result<()> {
+        let mut text = format!(
+            "[{}]",
+            stock_str::partial_download_msg_body(context, org_bytes).await
+        );
+        if let Some(delete_server_after) = context.get_config_delete_server_after().await? {
+            let until = stock_str::download_availability(
+                context,
+                time() + max(delete_server_after, MIN_DELETE_SERVER_AFTER),
+            )
+            .await;
+            text += format!(" [{}]", until).as_str();
+        };
+
+        info!(context, "Partial download: {}", text);
+
+        self.parts.push(Part {
+            typ: Viewtype::Text,
+            msg: text,
+            ..Default::default()
+        });
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::chat::send_msg;
+    use crate::constants::Viewtype;
+    use crate::dc_receive_imf::dc_receive_imf_inner;
+    use crate::ephemeral::Timer;
+    use crate::test_utils::TestContext;
+    use num_traits::FromPrimitive;
+
+    #[test]
+    fn test_downloadstate_values() {
+        // values may be written to disk and must not change
+        assert_eq!(DownloadState::Done, DownloadState::default());
+        assert_eq!(DownloadState::Done, DownloadState::from_i32(0).unwrap());
+        assert_eq!(
+            DownloadState::Available,
+            DownloadState::from_i32(10).unwrap()
+        );
+        assert_eq!(DownloadState::Failure, DownloadState::from_i32(20).unwrap());
+        assert_eq!(
+            DownloadState::InProgress,
+            DownloadState::from_i32(1000).unwrap()
+        );
+    }
+
+    #[async_std::test]
+    async fn test_download_limit() -> Result<()> {
+        let t = TestContext::new_alice().await;
+
+        assert_eq!(t.download_limit().await?, None);
+
+        t.set_config(Config::DownloadLimit, Some("200000")).await?;
+        assert_eq!(t.download_limit().await?, Some(200000));
+
+        t.set_config(Config::DownloadLimit, Some("20000")).await?;
+        assert_eq!(t.download_limit().await?, Some(MIN_DOWNLOAD_LIMIT));
+
+        t.set_config(Config::DownloadLimit, None).await?;
+        assert_eq!(t.download_limit().await?, None);
+
+        for val in &["0", "-1", "-100", "", "foo"] {
+            t.set_config(Config::DownloadLimit, Some(val)).await?;
+            assert_eq!(t.download_limit().await?, None);
+        }
+
+        Ok(())
+    }
+
+    #[async_std::test]
+    async fn test_update_download_state() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        let chat = t.create_chat_with_contact("Bob", "bob@example.org").await;
+
+        let mut msg = Message::new(Viewtype::Text);
+        msg.set_text(Some("Hi Bob".to_owned()));
+        let msg_id = send_msg(&t, chat.id, &mut msg).await?;
+        let msg = Message::load_from_db(&t, msg_id).await?;
+        assert_eq!(msg.download_state(), DownloadState::Done);
+
+        for s in &[
+            DownloadState::Available,
+            DownloadState::InProgress,
+            DownloadState::Failure,
+            DownloadState::Done,
+        ] {
+            msg_id.update_download_state(&t, *s).await?;
+            let msg = Message::load_from_db(&t, msg_id).await?;
+            assert_eq!(msg.download_state(), *s);
+        }
+
+        Ok(())
+    }
+
+    #[async_std::test]
+    async fn test_partial_receive_imf() -> Result<()> {
+        let t = TestContext::new_alice().await;
+
+        let header =
+            "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
+             From: bob@example.com\n\
+             To: alice@example.org\n\
+             Subject: foo\n\
+             Message-ID: <Mr.12345678901@example.com>\n\
+             Chat-Version: 1.0\n\
+             Date: Sun, 22 Mar 2020 22:37:57 +0000\
+             Content-Type: text/plain";
+
+        dc_receive_imf_inner(&t, header.as_bytes(), "INBOX", false, Some(100000), false).await?;
+        let msg = t.get_last_msg().await;
+        assert_eq!(msg.download_state(), DownloadState::Available);
+        assert_eq!(msg.get_subject(), "foo");
+        assert!(msg
+            .get_text()
+            .unwrap()
+            .contains(&stock_str::partial_download_msg_body(&t, 100000).await));
+
+        dc_receive_imf_inner(
+            &t,
+            format!("{}\n\n100k text...", header).as_bytes(),
+            "INBOX",
+            false,
+            None,
+            false,
+        )
+        .await?;
+        let msg = t.get_last_msg().await;
+        assert_eq!(msg.download_state(), DownloadState::Done);
+        assert_eq!(msg.get_subject(), "foo");
+        assert_eq!(msg.get_text(), Some("100k text...".to_string()));
+
+        Ok(())
+    }
+
+    #[async_std::test]
+    async fn test_partial_download_and_ephemeral() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        let chat_id = t
+            .create_chat_with_contact("bob", "bob@example.org")
+            .await
+            .id;
+        chat_id
+            .set_ephemeral_timer(&t, Timer::Enabled { duration: 60 })
+            .await?;
+
+        // download message from bob partially, this must not change the ephemeral timer
+        dc_receive_imf_inner(
+            &t,
+            b"From: Bob <bob@example.org>\n\
+                    To: Alice <alice@example.org>\n\
+                    Chat-Version: 1.0\n\
+                    Subject: subject\n\
+                    Message-ID: <first@example.org>\n\
+                    Date: Sun, 14 Nov 2021 00:10:00 +0000\
+                    Content-Type: text/plain",
+            "INBOX",
+            false,
+            Some(100000),
+            false,
+        )
+        .await?;
+        assert_eq!(
+            chat_id.get_ephemeral_timer(&t).await?,
+            Timer::Enabled { duration: 60 }
+        );
+
+        Ok(())
+    }
+}

src/e2ee.rs

@@ -2,7 +2,7 @@
 
 use std::collections::HashSet;
 
-use anyhow::{bail, ensure, format_err, Result};
+use anyhow::{bail, format_err, Context as _, Result};
 use mailparse::ParsedMail;
 use num_traits::FromPrimitive;
 
@@ -121,9 +121,9 @@ impl EncryptHelper {
             .into_iter()
             .filter_map(|(state, addr)| state.map(|s| (s, addr)))
         {
-            let key = peerstate.take_key(min_verified).ok_or_else(|| {
-                format_err!("proper enc-key for {} missing, cannot encrypt", addr)
-            })?;
+            let key = peerstate
+                .take_key(min_verified)
+                .with_context(|| format!("proper enc-key for {} missing, cannot encrypt", addr))?;
             keyring.add(key);
         }
         keyring.add(self.public_key.clone());
@@ -161,21 +161,24 @@ pub async fn try_decrypt(
     let mut peerstate = Peerstate::from_addr(context, &from).await?;
 
     // Apply Autocrypt header
-    if let Some(ref header) = Aheader::from_headers(context, &from, &mail.headers) {
-        if let Some(ref mut peerstate) = peerstate {
-            peerstate.apply_header(header, message_time);
-            peerstate.save_to_db(&context.sql, false).await?;
-        } else {
-            let p = Peerstate::from_header(header, message_time);
-            p.save_to_db(&context.sql, true).await?;
-            peerstate = Some(p);
+    match Aheader::from_headers(&from, &mail.headers) {
+        Ok(Some(ref header)) => {
+            if let Some(ref mut peerstate) = peerstate {
+                peerstate.apply_header(header, message_time);
+                peerstate.save_to_db(&context.sql, false).await?;
+            } else {
+                let p = Peerstate::from_header(header, message_time);
+                p.save_to_db(&context.sql, true).await?;
+                peerstate = Some(p);
+            }
         }
+        Ok(None) => {}
+        Err(err) => warn!(context, "Failed to parse Autocrypt header: {}", err),
     }
 
     // Possibly perform decryption
     let private_keyring: Keyring<SignedSecretKey> = Keyring::new_self(context).await?;
     let mut public_keyring_for_validate: Keyring<SignedPublicKey> = Keyring::new();
-    let mut signatures = HashSet::default();
 
     if let Some(ref mut peerstate) = peerstate {
         peerstate
@@ -188,14 +191,17 @@ pub async fn try_decrypt(
         }
     }
 
-    let out_mail = decrypt_if_autocrypt_message(
+    let (out_mail, signatures) = match decrypt_if_autocrypt_message(
         context,
         mail,
         private_keyring,
         public_keyring_for_validate,
-        &mut signatures,
     )
-    .await?;
+    .await?
+    {
+        Some((out_mail, signatures)) => (Some(out_mail), signatures),
+        None => (None, Default::default()),
+    };
 
     if let Some(mut peerstate) = peerstate {
         // If message is not encrypted and it is not a read receipt, degrade encryption.
@@ -271,8 +277,7 @@ async fn decrypt_if_autocrypt_message(
     mail: &ParsedMail<'_>,
     private_keyring: Keyring<SignedSecretKey>,
     public_keyring_for_validate: Keyring<SignedPublicKey>,
-    ret_valid_signatures: &mut HashSet<Fingerprint>,
-) -> Result<Option<Vec<u8>>> {
+) -> Result<Option<(Vec<u8>, HashSet<Fingerprint>)>> {
     let encrypted_data_part = match get_autocrypt_mime(mail).or_else(|| get_mixed_up_mime(mail)) {
         None => {
             // not an autocrypt mime message, abort and ignore
@@ -286,36 +291,60 @@ async fn decrypt_if_autocrypt_message(
         encrypted_data_part,
         private_keyring,
         public_keyring_for_validate,
-        ret_valid_signatures,
     )
     .await
 }
 
+/// Validates signatures of Multipart/Signed message part, as defined in RFC 1847.
+///
+/// Returns `None` if the part is not a Multipart/Signed part, otherwise retruns the set of key
+/// fingerprints for which there is a valid signature.
+async fn validate_detached_signature(
+    mail: &ParsedMail<'_>,
+    public_keyring_for_validate: &Keyring<SignedPublicKey>,
+) -> Result<Option<(Vec<u8>, HashSet<Fingerprint>)>> {
+    if mail.ctype.mimetype != "multipart/signed" {
+        return Ok(None);
+    }
+
+    if let [first_part, second_part] = &mail.subparts[..] {
+        // First part is the content, second part is the signature.
+        let content = first_part.raw_bytes;
+        let signature = second_part.get_body_raw()?;
+        let ret_valid_signatures =
+            pgp::pk_validate(content, &signature, public_keyring_for_validate).await?;
+
+        Ok(Some((content.to_vec(), ret_valid_signatures)))
+    } else {
+        Ok(None)
+    }
+}
+
 /// Returns Ok(None) if nothing encrypted was found.
 async fn decrypt_part(
     mail: &ParsedMail<'_>,
     private_keyring: Keyring<SignedSecretKey>,
     public_keyring_for_validate: Keyring<SignedPublicKey>,
-    ret_valid_signatures: &mut HashSet<Fingerprint>,
-) -> Result<Option<Vec<u8>>> {
+) -> Result<Option<(Vec<u8>, HashSet<Fingerprint>)>> {
     let data = mail.get_body_raw()?;
 
     if has_decrypted_pgp_armor(&data) {
-        // we should only have one decryption happening
-        ensure!(ret_valid_signatures.is_empty(), "corrupt signatures");
+        let (plain, ret_valid_signatures) =
+            pgp::pk_decrypt(data, private_keyring, &public_keyring_for_validate).await?;
 
-        let plain = pgp::pk_decrypt(
-            data,
-            private_keyring,
-            public_keyring_for_validate,
-            Some(ret_valid_signatures),
-        )
-        .await?;
+        // Check for detached signatures.
+        // If decrypted part is a multipart/signed, then there is a detached signature.
+        let decrypted_part = mailparse::parse_mail(&plain)?;
+        if let Some((content, valid_detached_signatures)) =
+            validate_detached_signature(&decrypted_part, &public_keyring_for_validate).await?
+        {
+            return Ok(Some((content, valid_detached_signatures)));
+        } else {
+            // If the message was wrongly or not signed, still return the plain text.
+            // The caller has to check the signatures then.
 
-        // If the message was wrongly or not signed, still return the plain text.
-        // The caller has to check the signatures then.
-
-        return Ok(Some(plain));
+            return Ok(Some((plain, ret_valid_signatures)));
+        }
     }
 
     Ok(None)
@@ -361,12 +390,10 @@ pub async fn ensure_secret_key_exists(context: &Context) -> Result<String> {
     let self_addr = context
         .get_config(Config::ConfiguredAddr)
         .await?
-        .ok_or_else(|| {
-            format_err!(concat!(
-                "Failed to get self address, ",
-                "cannot ensure secret key if not configured."
-            ))
-        })?;
+        .context(concat!(
+            "Failed to get self address, ",
+            "cannot ensure secret key if not configured."
+        ))?;
     SignedPublicKey::load_self(context).await?;
     Ok(self_addr)
 }
@@ -387,9 +414,11 @@ mod tests {
 
         #[async_std::test]
         async fn test_prexisting() {
-            let t = TestContext::new().await;
-            let test_addr = t.configure_alice().await;
-            assert_eq!(ensure_secret_key_exists(&t).await.unwrap(), test_addr);
+            let t = TestContext::new_alice().await;
+            assert_eq!(
+                ensure_secret_key_exists(&t).await.unwrap(),
+                "alice@example.org"
+            );
         }
 
         #[async_std::test]
@@ -460,7 +489,7 @@ Sent with my Delta Chat Messenger: https://delta.chat";
         assert!(!msg.was_encrypted());
 
         // Parsing a message is enough to update peerstate
-        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.com")
+        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.org")
             .await?
             .expect("no peerstate found in the database");
         assert_eq!(peerstate_alice.prefer_encrypt, EncryptPreference::Mutual);
@@ -491,28 +520,28 @@ Sent with my Delta Chat Messenger: https://delta.chat";
 
         let msg = bob.parse_msg(&sent).await;
         assert!(msg.was_encrypted());
-        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.com")
+        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.org")
             .await?
             .expect("no peerstate found in the database");
         assert_eq!(peerstate_alice.prefer_encrypt, EncryptPreference::Mutual);
 
         // Alice sends plaintext message with Autocrypt header.
         let mut msg = Message::new(Viewtype::Text);
-        msg.param.set_int(Param::ForcePlaintext, 1);
+        msg.force_plaintext();
         chat::prepare_msg(&alice.ctx, chat_alice, &mut msg).await?;
         chat::send_msg(&alice.ctx, chat_alice, &mut msg).await?;
         let sent = alice.pop_sent_msg().await;
 
         let msg = bob.parse_msg(&sent).await;
         assert!(!msg.was_encrypted());
-        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.com")
+        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.org")
             .await?
             .expect("no peerstate found in the database");
         assert_eq!(peerstate_alice.prefer_encrypt, EncryptPreference::Mutual);
 
         // Alice sends plaintext message without Autocrypt header.
         let mut msg = Message::new(Viewtype::Text);
-        msg.param.set_int(Param::ForcePlaintext, 1);
+        msg.force_plaintext();
         msg.param.set_int(Param::SkipAutocrypt, 1);
         chat::prepare_msg(&alice.ctx, chat_alice, &mut msg).await?;
         chat::send_msg(&alice.ctx, chat_alice, &mut msg).await?;
@@ -520,7 +549,7 @@ Sent with my Delta Chat Messenger: https://delta.chat";
 
         let msg = bob.parse_msg(&sent).await;
         assert!(!msg.was_encrypted());
-        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.com")
+        let peerstate_alice = Peerstate::from_addr(&bob.ctx, "alice@example.org")
             .await?
             .expect("no peerstate found in the database");
         assert_eq!(peerstate_alice.prefer_encrypt, EncryptPreference::Reset);

src/ephemeral.rs

@@ -52,7 +52,7 @@
 //! `MsgsChanged` event is emitted when a message deletion is due, to
 //! make UI reload displayed messages and cause actual deletion.
 //!
-//! Server deletion happens by generating IMAP deletion jobs based on
+//! Server deletion happens by updating the `imap` table based on
 //! the database entries which are expired either according to their
 //! ephemeral message timers or global `delete_server_after` setting.
 
@@ -71,11 +71,12 @@ use crate::constants::{
 };
 use crate::context::Context;
 use crate::dc_tools::time;
+use crate::download::MIN_DELETE_SERVER_AFTER;
 use crate::events::EventType;
-use crate::job;
 use crate::message::{Message, MessageState, MsgId};
 use crate::mimeparser::SystemMessage;
 use crate::stock_str;
+use std::cmp::max;
 
 #[derive(Debug, PartialEq, Eq, Copy, Clone, Serialize, Deserialize)]
 pub enum Timer {
@@ -261,7 +262,7 @@ pub(crate) async fn stock_ephemeral_timer_changed(
 
 impl MsgId {
     /// Returns ephemeral message timer value for the message.
-    pub(crate) async fn ephemeral_timer(self, context: &Context) -> anyhow::Result<Timer> {
+    pub(crate) async fn ephemeral_timer(self, context: &Context) -> Result<Timer> {
         let res = match context
             .sql
             .query_get_value(
@@ -277,9 +278,9 @@ impl MsgId {
     }
 
     /// Starts ephemeral message timer for the message if it is not started yet.
-    pub(crate) async fn start_ephemeral_timer(self, context: &Context) -> anyhow::Result<()> {
+    pub(crate) async fn start_ephemeral_timer(self, context: &Context) -> Result<()> {
         if let Timer::Enabled { duration } = self.ephemeral_timer(context).await? {
-            let ephemeral_timestamp = time() + i64::from(duration);
+            let ephemeral_timestamp = time().saturating_add(duration.into());
 
             context
                 .sql
@@ -416,58 +417,52 @@ pub async fn schedule_ephemeral_task(context: &Context) {
             let context1 = context.clone();
             let ephemeral_task = task::spawn(async move {
                 async_std::task::sleep(duration).await;
-                emit_event!(
-                    context1,
-                    EventType::MsgsChanged {
-                        chat_id: ChatId::new(0),
-                        msg_id: MsgId::new(0)
-                    }
-                );
+                context1.emit_event(EventType::MsgsChanged {
+                    chat_id: ChatId::new(0),
+                    msg_id: MsgId::new(0),
+                });
             });
             *context.ephemeral_task.write().await = Some(ephemeral_task);
         } else {
             // Emit event immediately
-            emit_event!(
-                context,
-                EventType::MsgsChanged {
-                    chat_id: ChatId::new(0),
-                    msg_id: MsgId::new(0)
-                }
-            );
+            context.emit_event(EventType::MsgsChanged {
+                chat_id: ChatId::new(0),
+                msg_id: MsgId::new(0),
+            });
         }
     }
 }
 
-/// Returns ID of any expired message that should be deleted from the server.
-///
-/// It looks up the trash chat too, to find messages that are already
-/// deleted locally, but not deleted on the server.
-pub(crate) async fn load_imap_deletion_msgid(context: &Context) -> anyhow::Result<Option<MsgId>> {
+/// Schedules expired IMAP messages for deletion.
+pub(crate) async fn delete_expired_imap_messages(context: &Context) -> Result<()> {
     let now = time();
 
-    let threshold_timestamp = match context.get_config_delete_server_after().await? {
-        None => 0,
-        Some(delete_server_after) => now - delete_server_after,
-    };
+    let (threshold_timestamp, threshold_timestamp_extended) =
+        match context.get_config_delete_server_after().await? {
+            None => (0, 0),
+            Some(delete_server_after) => (
+                now - delete_server_after,
+                now - max(delete_server_after, MIN_DELETE_SERVER_AFTER),
+            ),
+        };
 
     context
         .sql
-        .query_row_optional(
-            "SELECT id FROM msgs \
-         WHERE ( \
-         timestamp < ? \
-         OR (ephemeral_timestamp != 0 AND ephemeral_timestamp <= ?) \
-         ) \
-         AND server_uid != 0 \
-         AND NOT id IN (SELECT foreign_id FROM jobs WHERE action = ?)
-         LIMIT 1",
-            paramsv![threshold_timestamp, now, job::Action::DeleteMsgOnImap],
-            |row| {
-                let msg_id: MsgId = row.get(0)?;
-                Ok(msg_id)
-            },
+        .execute(
+            "UPDATE imap
+             SET target=''
+             WHERE EXISTS (
+               SELECT * FROM msgs
+               WHERE rfc724_mid=imap.rfc724_mid
+               AND ((download_state = 0 AND timestamp < ?) OR
+                    (download_state != 0 AND timestamp < ?) OR
+                    (ephemeral_timestamp != 0 AND ephemeral_timestamp <= ?))
+             )",
+            paramsv![threshold_timestamp, threshold_timestamp_extended, now],
         )
-        .await
+        .await?;
+
+    Ok(())
 }
 
 /// Start ephemeral timers for seen messages if they are not started
@@ -502,10 +497,10 @@ pub(crate) async fn start_ephemeral_timers(context: &Context) -> Result<()> {
 
 #[cfg(test)]
 mod tests {
-    use crate::param::Params;
-    use async_std::task::sleep;
-
     use super::*;
+    use crate::config::Config;
+    use crate::dc_receive_imf::dc_receive_imf;
+    use crate::download::DownloadState;
     use crate::test_utils::TestContext;
     use crate::{
         chat::{self, Chat, ChatItem},
@@ -641,8 +636,83 @@ mod tests {
         );
     }
 
+    /// Test enabling and disabling ephemeral timer remotely.
     #[async_std::test]
-    async fn test_ephemeral_timer() -> anyhow::Result<()> {
+    async fn test_ephemeral_enable_disable() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+        let bob = TestContext::new_bob().await;
+
+        let chat_alice = alice.create_chat(&bob).await.id;
+        let chat_bob = bob.create_chat(&alice).await.id;
+
+        chat_alice
+            .set_ephemeral_timer(&alice.ctx, Timer::Enabled { duration: 60 })
+            .await?;
+        let sent = alice.pop_sent_msg().await;
+        bob.recv_msg(&sent).await;
+        assert_eq!(
+            chat_bob.get_ephemeral_timer(&bob.ctx).await?,
+            Timer::Enabled { duration: 60 }
+        );
+
+        chat_alice
+            .set_ephemeral_timer(&alice.ctx, Timer::Disabled)
+            .await?;
+        let sent = alice.pop_sent_msg().await;
+        bob.recv_msg(&sent).await;
+        assert_eq!(
+            chat_bob.get_ephemeral_timer(&bob.ctx).await?,
+            Timer::Disabled
+        );
+
+        Ok(())
+    }
+
+    /// Test that timer is enabled even if the message explicitly enabling the timer is lost.
+    #[async_std::test]
+    async fn test_ephemeral_enable_lost() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+        let bob = TestContext::new_bob().await;
+
+        let chat_alice = alice.create_chat(&bob).await.id;
+        let chat_bob = bob.create_chat(&alice).await.id;
+
+        // Alice enables the timer.
+        chat_alice
+            .set_ephemeral_timer(&alice.ctx, Timer::Enabled { duration: 60 })
+            .await?;
+        assert_eq!(
+            chat_alice.get_ephemeral_timer(&alice.ctx).await?,
+            Timer::Enabled { duration: 60 }
+        );
+        // The message enabling the timer is lost.
+        let _sent = alice.pop_sent_msg().await;
+        assert_eq!(
+            chat_bob.get_ephemeral_timer(&bob.ctx).await?,
+            Timer::Disabled,
+        );
+
+        // Alice sends a text message.
+        let mut msg = Message::new(Viewtype::Text);
+        chat::prepare_msg(&alice.ctx, chat_alice, &mut msg).await?;
+        chat::send_msg(&alice.ctx, chat_alice, &mut msg).await?;
+        let sent = alice.pop_sent_msg().await;
+
+        // Bob receives text message and enables the timer, even though explicit timer update was
+        // lost previously.
+        bob.recv_msg(&sent).await;
+        assert_eq!(
+            chat_bob.get_ephemeral_timer(&bob.ctx).await?,
+            Timer::Enabled { duration: 60 }
+        );
+
+        Ok(())
+    }
+
+    /// Test that Alice replying to the chat without a timer at the same time as Bob enables the
+    /// timer does not result in disabling the timer on the Bob's side.
+    #[async_std::test]
+    async fn test_ephemeral_timer_rollback() -> Result<()> {
         let alice = TestContext::new_alice().await;
         let bob = TestContext::new_bob().await;
 
@@ -700,18 +770,30 @@ mod tests {
             Timer::Enabled { duration: 60 }
         );
 
+        // Bob disables the chat timer.
+        // Note that the last message in the Bob's chat is from Alice and has no timer,
+        // but the chat timer is enabled.
+        chat_bob
+            .set_ephemeral_timer(&bob.ctx, Timer::Disabled)
+            .await?;
+        alice.recv_msg(&bob.pop_sent_msg().await).await;
+        assert_eq!(
+            chat_alice.get_ephemeral_timer(&alice.ctx).await?,
+            Timer::Disabled
+        );
+
         Ok(())
     }
 
     #[async_std::test]
-    async fn test_ephemeral_delete_msgs() {
+    async fn test_ephemeral_delete_msgs() -> Result<()> {
         let t = TestContext::new_alice().await;
         let chat = t.get_self_chat().await;
 
         t.send_text(chat.id, "Saved message, which we delete manually")
             .await;
         let msg = t.get_last_msg_in(chat.id).await;
-        msg.id.delete_from_db(&t).await.unwrap();
+        msg.id.delete_from_db(&t).await?;
         check_msg_was_deleted(&t, &chat, msg.id).await;
 
         chat.id
@@ -722,36 +804,12 @@ mod tests {
             .send_text(chat.id, "Saved message, disappearing after 1s")
             .await;
 
-        sleep(Duration::from_millis(1100)).await;
+        async_std::task::sleep(Duration::from_millis(1100)).await;
 
-        // Check checks that the msg was deleted locally
+        // Check that the msg was deleted locally.
         check_msg_was_deleted(&t, &chat, msg.sender_msg_id).await;
 
-        // Check that the msg will be deleted on the server
-        // First of all, set a server_uid so that DC thinks that it's actually possible to delete
-        t.sql
-            .execute(
-                "UPDATE msgs SET server_uid=1 WHERE id=?",
-                paramsv![msg.sender_msg_id],
-            )
-            .await
-            .unwrap();
-        let job = job::load_imap_deletion_job(&t).await.unwrap();
-        assert_eq!(
-            job,
-            Some(job::Job::new(
-                job::Action::DeleteMsgOnImap,
-                msg.sender_msg_id.to_u32(),
-                Params::new(),
-                0,
-            ))
-        );
-        // Let's assume that executing the job fails on first try and the job is saved to the db
-        job.unwrap().save(&t).await.unwrap();
-
-        // Make sure that we don't get yet another job when loading from db
-        let job2 = job::load_imap_deletion_job(&t).await.unwrap();
-        assert_eq!(job2, None);
+        Ok(())
     }
 
     async fn check_msg_was_deleted(t: &TestContext, chat: &Chat, msg_id: MsgId) {
@@ -777,4 +835,202 @@ mod tests {
             assert!(rawtxt.is_none_or_empty(), "{:?}", rawtxt);
         }
     }
+
+    #[async_std::test]
+    async fn test_delete_expired_imap_messages() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        const HOUR: i64 = 60 * 60;
+        let now = time();
+        for (id, timestamp, ephemeral_timestamp) in &[
+            (900, now - 2 * HOUR, 0),
+            (1000, now - 23 * HOUR - MIN_DELETE_SERVER_AFTER, 0),
+            (1010, now - 23 * HOUR, 0),
+            (1020, now - 21 * HOUR, 0),
+            (1030, now - 19 * HOUR, 0),
+            (2000, now - 18 * HOUR, now - HOUR),
+            (2020, now - 17 * HOUR, now + HOUR),
+        ] {
+            let message_id = id.to_string();
+            t.sql
+                   .execute(
+                       "INSERT INTO msgs (id, rfc724_mid, timestamp, ephemeral_timestamp) VALUES (?,?,?,?);",
+                       paramsv![id, message_id, timestamp, ephemeral_timestamp],
+                   )
+                   .await?;
+            t.sql
+                   .execute(
+                       "INSERT INTO imap (rfc724_mid, folder, uid, target) VALUES (?,'INBOX',?, 'INBOX');",
+                       paramsv![message_id, id],
+                   )
+                   .await?;
+        }
+
+        async fn test_marked_for_deletion(context: &Context, id: u32) -> Result<()> {
+            assert_eq!(
+                context
+                    .sql
+                    .count(
+                        "SELECT COUNT(*) FROM imap WHERE target='' AND rfc724_mid=?",
+                        paramsv![id.to_string()],
+                    )
+                    .await?,
+                1
+            );
+            Ok(())
+        }
+
+        async fn remove_uid(context: &Context, id: u32) -> Result<()> {
+            context
+                .sql
+                .execute(
+                    "DELETE FROM imap WHERE rfc724_mid=?",
+                    paramsv![id.to_string()],
+                )
+                .await?;
+            Ok(())
+        }
+
+        // This should mark message 2000 for deletion.
+        delete_expired_imap_messages(&t).await?;
+        test_marked_for_deletion(&t, 2000).await?;
+        remove_uid(&t, 2000).await?;
+        // No other messages are marked for deletion.
+        assert_eq!(
+            t.sql
+                .count("SELECT COUNT(*) FROM imap WHERE target=''", paramsv![],)
+                .await?,
+            0
+        );
+
+        t.set_config(Config::DeleteServerAfter, Some(&*(25 * HOUR).to_string()))
+            .await?;
+        delete_expired_imap_messages(&t).await?;
+        test_marked_for_deletion(&t, 1000).await?;
+
+        MsgId::new(1000)
+            .update_download_state(&t, DownloadState::Available)
+            .await?;
+        t.sql
+            .execute(
+                "UPDATE imap SET target=folder WHERE rfc724_mid='1000'",
+                paramsv![],
+            )
+            .await?;
+        delete_expired_imap_messages(&t).await?;
+        test_marked_for_deletion(&t, 1000).await?; // Delete downloadable anyway.
+        remove_uid(&t, 1000).await?;
+
+        t.set_config(Config::DeleteServerAfter, Some(&*(22 * HOUR).to_string()))
+            .await?;
+        delete_expired_imap_messages(&t).await?;
+        test_marked_for_deletion(&t, 1010).await?;
+        t.sql
+            .execute(
+                "UPDATE imap SET target=folder WHERE rfc724_mid='1010'",
+                paramsv![],
+            )
+            .await?;
+
+        MsgId::new(1010)
+            .update_download_state(&t, DownloadState::Available)
+            .await?;
+        delete_expired_imap_messages(&t).await?;
+        // Keep downloadable for now.
+        assert_eq!(
+            t.sql
+                .count("SELECT COUNT(*) FROM imap WHERE target=''", paramsv![],)
+                .await?,
+            0
+        );
+
+        Ok(())
+    }
+
+    // Regression test for a bug in the timer rollback protection.
+    #[async_std::test]
+    async fn test_ephemeral_timer_references() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+
+        // Message with Message-ID <first@example.com> and no timer is received.
+        dc_receive_imf(
+            &alice,
+            b"From: Bob <bob@example.com>\n\
+                    To: Alice <alice@example.org>\n\
+                    Chat-Version: 1.0\n\
+                    Subject: Subject\n\
+                    Message-ID: <first@example.com>\n\
+                    Date: Sun, 22 Mar 2020 00:10:00 +0000\n\
+                    \n\
+                    hello\n",
+            "INBOX",
+            false,
+        )
+        .await?;
+
+        let msg = alice.get_last_msg().await;
+        let chat_id = msg.chat_id;
+        assert_eq!(chat_id.get_ephemeral_timer(&alice).await?, Timer::Disabled);
+
+        // Message with Message-ID <second@example.com> is received.
+        dc_receive_imf(
+            &alice,
+            b"From: Bob <bob@example.com>\n\
+                    To: Alice <alice@example.org>\n\
+                    Chat-Version: 1.0\n\
+                    Subject: Subject\n\
+                    Message-ID: <second@example.com>\n\
+                    Date: Sun, 22 Mar 2020 00:11:00 +0000\n\
+                    Ephemeral-Timer: 60\n\
+                    \n\
+                    second message\n",
+            "INBOX",
+            false,
+        )
+        .await?;
+        assert_eq!(
+            chat_id.get_ephemeral_timer(&alice).await?,
+            Timer::Enabled { duration: 60 }
+        );
+        let msg = alice.get_last_msg().await;
+
+        // Message is deleted from the database when its timer expires.
+        msg.id.delete_from_db(&alice).await?;
+
+        // Message with Message-ID <third@example.com>, referencing <first@example.com> and
+        // <second@example.com>, is received.  The message <second@example.come> is not in the
+        // database anymore, so the timer should be applied unconditionally without rollback
+        // protection.
+        //
+        // Previously Delta Chat fallen back to using <first@example.com> in this case and
+        // compared received timer value to the timer value of the <first@examle.com>. Because
+        // their timer values are the same ("disabled"), Delta Chat assumed that the timer was not
+        // changed explicitly and the change should be ignored.
+        //
+        // The message also contains a quote of the first message to test that only References:
+        // header and not In-Reply-To: is consulted by the rollback protection.
+        dc_receive_imf(
+            &alice,
+            b"From: Bob <bob@example.com>\n\
+                    To: Alice <alice@example.org>\n\
+                    Chat-Version: 1.0\n\
+                    Subject: Subject\n\
+                    Message-ID: <third@example.com>\n\
+                    Date: Sun, 22 Mar 2020 00:12:00 +0000\n\
+                    References: <first@example.com> <second@example.com>\n\
+                    In-Reply-To: <first@example.com>\n\
+                    \n\
+                    > hello\n",
+            "INBOX",
+            false,
+        )
+        .await?;
+
+        let msg = alice.get_last_msg().await;
+        assert_eq!(
+            msg.chat_id.get_ephemeral_timer(&alice).await?,
+            Timer::Disabled
+        );
+
+        Ok(())
+    }
 }

src/events.rs

@@ -9,6 +9,7 @@ use strum::EnumProperty;
 use crate::chat::ChatId;
 use crate::ephemeral::Timer as EphemeralTimer;
 use crate::message::MsgId;
+use crate::webxdc::StatusUpdateId;
 
 #[derive(Debug)]
 pub struct Events {
@@ -62,10 +63,6 @@ impl Events {
 pub struct EventEmitter(Receiver<Event>);
 
 impl EventEmitter {
-    pub(crate) fn into_inner(self) -> Receiver<Event> {
-        self.0
-    }
-
     /// Blocking recv of an event. Return `None` if the `Sender` has been droped.
     pub fn recv_sync(&self) -> Option<Event> {
         async_std::task::block_on(self.recv())
@@ -203,7 +200,8 @@ pub enum EventType {
     /// - Chats created, deleted or archived
     /// - A draft has been set
     ///
-    /// The `chat_id` and `msg_id` values will be 0 if more than one message is changed.
+    /// `chat_id` is set if only a single chat is affected by the changes, otherwise 0.
+    /// `msg_id` is set if only a single message is affected by the changes, otherwise 0.
     #[strum(props(id = "2000"))]
     MsgsChanged { chat_id: ChatId, msg_id: MsgId },
 
@@ -326,4 +324,13 @@ pub enum EventType {
     /// dc_get_connectivity_html() for details.
     #[strum(props(id = "2100"))]
     ConnectivityChanged,
+
+    #[strum(props(id = "2110"))]
+    SelfavatarChanged,
+
+    #[strum(props(id = "2120"))]
+    WebxdcStatusUpdate {
+        msg_id: MsgId,
+        status_update_id: StatusUpdateId,
+    },
 }

src/headerdef.rs

@@ -1,9 +1,8 @@
 //! # List of email headers.
 
-use crate::strum::AsStaticRef;
 use mailparse::{MailHeader, MailHeaderMap};
 
-#[derive(Debug, Display, Clone, PartialEq, Eq, EnumVariantNames, AsStaticStr)]
+#[derive(Debug, Display, Clone, PartialEq, Eq, EnumVariantNames, IntoStaticStr)]
 #[strum(serialize_all = "kebab_case")]
 pub enum HeaderDef {
     MessageId,
@@ -34,6 +33,7 @@ pub enum HeaderDef {
     XMozillaDraftInfo,
 
     ListId,
+    ListPost,
     References,
     InReplyTo,
     Precedence,
@@ -67,9 +67,9 @@ pub enum HeaderDef {
 }
 
 impl HeaderDef {
-    /// Returns the corresponding Event id.
+    /// Returns the corresponding header string.
     pub fn get_headername(&self) -> &'static str {
-        self.as_static()
+        self.into()
     }
 }
 

src/html.rs

@@ -440,9 +440,7 @@ test some special html-characters as < > and & but also " and &#x
             .create_chat_with_contact("", "sender@testrun.org")
             .await;
         let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
-        dc_receive_imf(&alice, raw, "INBOX", 1, false)
-            .await
-            .unwrap();
+        dc_receive_imf(&alice, raw, "INBOX", false).await.unwrap();
         let msg = alice.get_last_msg_in(chat.get_id()).await;
         assert_ne!(msg.get_from_id(), DC_CONTACT_ID_SELF);
         assert_eq!(msg.is_dc_message, MessengerMessage::No);
@@ -468,7 +466,7 @@ test some special html-characters as < > and & but also " and &#x
 
         // bob: check that bob also got the html-part of the forwarded message
         let bob = TestContext::new_bob().await;
-        let chat = bob.create_chat_with_contact("", "alice@example.com").await;
+        let chat = bob.create_chat_with_contact("", "alice@example.org").await;
         bob.recv_msg(&alice.pop_sent_msg().await).await;
         let msg = bob.get_last_msg_in(chat.get_id()).await;
         assert_ne!(msg.get_from_id(), DC_CONTACT_ID_SELF);
@@ -491,9 +489,7 @@ test some special html-characters as < > and & but also " and &#x
             .create_chat_with_contact("", "sender@testrun.org")
             .await;
         let raw = include_bytes!("../test-data/message/text_alt_plain_html.eml");
-        dc_receive_imf(&alice, raw, "INBOX", 1, false)
-            .await
-            .unwrap();
+        dc_receive_imf(&alice, raw, "INBOX", false).await.unwrap();
         let msg = alice.get_last_msg_in(chat.get_id()).await;
 
         // forward the message to saved-messages,
@@ -560,7 +556,6 @@ test some special html-characters as < > and & but also " and &#x
             &t,
             include_bytes!("../test-data/message/cp1252-html.eml"),
             "INBOX",
-            0,
             false,
         )
         .await?;

src/imap/idle.rs

@@ -1,8 +1,9 @@
 use super::Imap;
 
-use anyhow::{bail, format_err, Result};
+use anyhow::{bail, Context as _, Result};
 use async_imap::extensions::idle::IdleResponse;
 use async_std::prelude::*;
+use imap_proto::types::{AttributeValue, Response};
 use std::time::{Duration, SystemTime};
 
 use crate::{context::Context, scheduler::InterruptInfo};
@@ -31,7 +32,7 @@ impl Imap {
         let timeout = Duration::from_secs(23 * 60);
         let mut info = Default::default();
 
-        if self.server_sent_unsolicited_exists(context) {
+        if self.server_sent_unsolicited_exists(context)? {
             return Ok(info);
         }
 
@@ -71,6 +72,13 @@ impl Imap {
             match fut.await {
                 Ok(Event::IdleResponse(IdleResponse::NewData(x))) => {
                     info!(context, "Idle has NewData {:?}", x);
+                    if let Response::Fetch(_message, attrs) = x.parsed() {
+                        for attr in attrs {
+                            if let AttributeValue::ModSeq(modseq) = attr {
+                                self.update_modseq(*modseq);
+                            }
+                        }
+                    }
                 }
                 Ok(Event::IdleResponse(IdleResponse::Timeout)) => {
                     info!(context, "Idle-wait timeout or interruption");
@@ -90,8 +98,8 @@ impl Imap {
             let session = handle
                 .done()
                 .timeout(Duration::from_secs(15))
-                .await
-                .map_err(|err| format_err!("IMAP IDLE protocol timed out: {}", err))??;
+                .await?
+                .context("IMAP IDLE protocol timed out")?;
             self.session = Some(Session { inner: session });
         } else {
             warn!(context, "Attempted to idle without a session");
@@ -150,7 +158,7 @@ impl Imap {
                     }
                     if self.config.can_idle {
                         // we only fake-idled because network was gone during IDLE, probably
-                        break InterruptInfo::new(false, None);
+                        break InterruptInfo::new(false);
                     }
                     info!(context, "fake_idle is connected");
                     // we are connected, let's see if fetching messages results
@@ -162,7 +170,7 @@ impl Imap {
                         Ok(res) => {
                             info!(context, "fetch_new_messages returned {:?}", res);
                             if res {
-                                break InterruptInfo::new(false, None);
+                                break InterruptInfo::new(false);
                             }
                         }
                         Err(err) => {

src/imap/scan_folders.rs

@@ -10,7 +10,7 @@ use async_std::prelude::*;
 use super::{get_folder_meaning, get_folder_meaning_by_name};
 
 impl Imap {
-    pub async fn scan_folders(&mut self, context: &Context) -> Result<()> {
+    pub(crate) async fn scan_folders(&mut self, context: &Context) -> Result<()> {
         // First of all, debounce to once per minute:
         let mut last_scan = context.last_full_folder_scan.lock().await;
         if let Some(last_scan) = *last_scan {
@@ -29,7 +29,7 @@ impl Imap {
         let session = self.session.as_mut();
         let session = session.context("scan_folders(): IMAP No Connection established")?;
         let folders: Vec<_> = session.list(Some(""), Some("*")).await?.collect().await;
-        let watched_folders = get_watched_folders(context).await;
+        let watched_folders = get_watched_folders(context).await?;
 
         let mut folder_configs = BTreeMap::new();
 
@@ -71,15 +71,15 @@ impl Imap {
             // Don't scan folders that are watched anyway
             if !watched_folders.contains(&folder.name().to_string()) && !is_drafts {
                 // Drain leftover unsolicited EXISTS messages
-                self.server_sent_unsolicited_exists(context);
+                self.server_sent_unsolicited_exists(context)?;
 
                 loop {
-                    self.fetch_new_messages(context, folder.name(), false)
+                    self.fetch_move_delete(context, folder.name())
                         .await
                         .ok_or_log_msg(context, "Can't fetch new msgs in scanned folder");
 
                     // If the server sent an unsocicited EXISTS during the fetch, we need to fetch again
-                    if !self.server_sent_unsolicited_exists(context) {
+                    if !self.server_sent_unsolicited_exists(context)? {
                         break;
                     }
                 }
@@ -102,19 +102,21 @@ impl Imap {
     }
 }
 
-pub(crate) async fn get_watched_folders(context: &Context) -> Vec<String> {
+pub(crate) async fn get_watched_folders(context: &Context) -> Result<Vec<String>> {
     let mut res = Vec::new();
+    if let Some(inbox_folder) = context.get_config(Config::ConfiguredInboxFolder).await? {
+        res.push(inbox_folder);
+    }
     let folder_watched_configured = &[
         (Config::SentboxWatch, Config::ConfiguredSentboxFolder),
-        (Config::MvboxWatch, Config::ConfiguredMvboxFolder),
-        (Config::InboxWatch, Config::ConfiguredInboxFolder),
+        (Config::MvboxMove, Config::ConfiguredMvboxFolder),
     ];
     for (watched, configured) in folder_watched_configured {
-        if context.get_config_bool(*watched).await.unwrap_or_default() {
-            if let Ok(Some(folder)) = context.get_config(*configured).await {
+        if context.get_config_bool(*watched).await? {
+            if let Some(folder) = context.get_config(*configured).await? {
                 res.push(folder);
             }
         }
     }
-    res
+    Ok(res)
 }

src/imap/select_folder.rs

@@ -15,6 +15,9 @@ pub enum Error {
     #[error("IMAP Folder name invalid: {0}")]
     BadFolderName(String),
 
+    #[error("IMAP folder does not exist: {0}")]
+    NoFolder(String),
+
     #[error("IMAP close/expunge failed")]
     CloseExpungeFailed(#[from] async_imap::error::Error),
 
@@ -90,7 +93,11 @@ impl Imap {
         // select new folder
         if let Some(folder) = folder {
             if let Some(ref mut session) = &mut self.session {
-                let res = session.select(folder).await;
+                let res = if self.config.can_condstore {
+                    session.select_condstore(folder).await
+                } else {
+                    session.select(folder).await
+                };
 
                 // <https://tools.ietf.org/html/rfc3501#section-6.3.1>
                 // says that if the server reports select failure we are in
@@ -110,6 +117,9 @@ impl Imap {
                     Err(async_imap::error::Error::Validate(_)) => {
                         Err(Error::BadFolderName(folder.to_string()))
                     }
+                    Err(async_imap::error::Error::No(_)) => {
+                        Err(Error::NoFolder(folder.to_string()))
+                    }
                     Err(err) => {
                         self.config.selected_folder = None;
                         self.trigger_reconnect(context).await;
@@ -123,6 +133,28 @@ impl Imap {
             Ok(NewlySelected::No)
         }
     }
+
+    /// Selects a folder. Tries to create it once and select again if the folder does not exist.
+    pub(super) async fn select_or_create_folder(
+        &mut self,
+        context: &Context,
+        folder: &str,
+    ) -> Result<NewlySelected> {
+        match self.select_folder(context, Some(folder)).await {
+            Ok(newly_selected) => Ok(newly_selected),
+            Err(err) => match err {
+                Error::NoFolder(_) => {
+                    if let Some(ref mut session) = self.session {
+                        session.create(folder).await?;
+                    } else {
+                        return Err(Error::NoSession);
+                    }
+                    self.select_folder(context, Some(folder)).await
+                }
+                _ => Err(err),
+            },
+        }
+    }
 }
 #[derive(PartialEq, Debug, Copy, Clone, Eq)]
 pub(super) enum NewlySelected {

src/imex.rs

@@ -19,8 +19,8 @@ use crate::config::Config;
 use crate::constants::{Viewtype, DC_CONTACT_ID_SELF};
 use crate::context::Context;
 use crate::dc_tools::{
-    dc_copy_file, dc_create_folder, dc_delete_file, dc_delete_files_in_dir, dc_get_filesuffix_lc,
-    dc_open_file_std, dc_read_file, dc_write_file, get_next_backup_path, time, EmailAddress,
+    dc_create_folder, dc_delete_file, dc_delete_files_in_dir, dc_get_filesuffix_lc,
+    dc_open_file_std, dc_read_file, dc_write_file, time, EmailAddress,
 };
 use crate::e2ee;
 use crate::events::EventType;
@@ -30,7 +30,7 @@ use crate::message::{Message, MsgId};
 use crate::mimeparser::SystemMessage;
 use crate::param::Param;
 use crate::pgp;
-use crate::sql::{self, Sql};
+use crate::sql;
 use crate::stock_str;
 
 // Name of the database file in the backup.
@@ -41,24 +41,24 @@ const BLOBS_BACKUP_NAME: &str = "blobs_backup";
 #[repr(u32)]
 pub enum ImexMode {
     /// Export all private keys and all public keys of the user to the
-    /// directory given as `param1`.  The default key is written to the files `public-key-default.asc`
+    /// directory given as `path`.  The default key is written to the files `public-key-default.asc`
     /// and `private-key-default.asc`, if there are more keys, they are written to files as
     /// `public-key-<id>.asc` and `private-key-<id>.asc`
     ExportSelfKeys = 1,
 
-    /// Import private keys found in the directory given as `param1`.
+    /// Import private keys found in the directory given as `path`.
     /// The last imported key is made the default keys unless its name contains the string `legacy`.
     /// Public keys are not imported.
     ImportSelfKeys = 2,
 
-    /// Export a backup to the directory given as `param1`.
+    /// Export a backup to the directory given as `path` with the given `passphrase`.
     /// The backup contains all contacts, chats, images and other data and device independent settings.
     /// The backup does not contain device dependent settings as ringtones or LED notification settings.
     /// The name of the backup is typically `delta-chat-<day>.tar`, if more than one backup is create on a day,
     /// the format is `delta-chat-<day>-<number>.tar`
     ExportBackup = 11,
 
-    /// `param1` is the file (not: directory) to import. The file is normally
+    /// `path` is the file (not: directory) to import. The file is normally
     /// created by DC_IMEX_EXPORT_BACKUP and detected by dc_imex_has_backup(). Importing a backup
     /// is only possible as long as the context is not configured or used in another way.
     ImportBackup = 12,
@@ -78,11 +78,16 @@ pub enum ImexMode {
 ///
 /// Only one import-/export-progress can run at the same time.
 /// To cancel an import-/export-progress, drop the future returned by this function.
-pub async fn imex(context: &Context, what: ImexMode, param1: &Path) -> Result<()> {
+pub async fn imex(
+    context: &Context,
+    what: ImexMode,
+    path: &Path,
+    passphrase: Option<String>,
+) -> Result<()> {
     let cancel = context.alloc_ongoing().await?;
 
     let res = async {
-        let success = imex_inner(context, what, param1).await;
+        let success = imex_inner(context, what, path, passphrase).await;
         match success {
             Ok(()) => {
                 info!(context, "IMEX successfully completed");
@@ -115,15 +120,10 @@ async fn cleanup_aborted_imex(context: &Context, what: ImexMode) {
         dc_delete_file(context, context.get_dbfile()).await;
         dc_delete_files_in_dir(context, context.get_blobdir()).await;
     }
-    if what == ImexMode::ExportBackup || what == ImexMode::ImportBackup {
-        if let Err(e) = context.sql.open(context, context.get_dbfile(), false).await {
-            warn!(context, "Re-opening db after imex failed: {}", e);
-        }
-    }
 }
 
 /// Returns the filename of the backup found (otherwise an error)
-pub async fn has_backup(context: &Context, dir_name: &Path) -> Result<String> {
+pub async fn has_backup(_context: &Context, dir_name: &Path) -> Result<String> {
     let mut dir_iter = async_std::fs::read_dir(dir_name).await?;
     let mut newest_backup_name = "".to_string();
     let mut newest_backup_path: Option<PathBuf> = None;
@@ -145,59 +145,6 @@ pub async fn has_backup(context: &Context, dir_name: &Path) -> Result<String> {
         }
     }
 
-    match newest_backup_path {
-        Some(path) => Ok(path.to_string_lossy().into_owned()),
-        None => has_backup_old(context, dir_name).await,
-        // When we decide to remove support for .bak backups, we can replace this with `None => bail!("no backup found in {}", dir_name.display()),`.
-    }
-}
-
-/// Returns the filename of the backup found (otherwise an error)
-pub async fn has_backup_old(context: &Context, dir_name: &Path) -> Result<String> {
-    let mut dir_iter = async_std::fs::read_dir(dir_name).await?;
-    let mut newest_backup_time = 0;
-    let mut newest_backup_name = "".to_string();
-    let mut newest_backup_path: Option<PathBuf> = None;
-    while let Some(dirent) = dir_iter.next().await {
-        if let Ok(dirent) = dirent {
-            let path = dirent.path();
-            let name = dirent.file_name();
-            let name = name.to_string_lossy();
-            if name.starts_with("delta-chat") && name.ends_with(".bak") {
-                let sql = Sql::new();
-                match sql.open(context, &path, true).await {
-                    Ok(_) => {
-                        let curr_backup_time = sql
-                            .get_raw_config_int("backup_time")
-                            .await?
-                            .unwrap_or_default();
-                        if curr_backup_time > newest_backup_time {
-                            newest_backup_path = Some(path);
-                            newest_backup_time = curr_backup_time;
-                        }
-                        info!(context, "backup_time of {} is {}", name, curr_backup_time);
-                        sql.close().await;
-                    }
-                    Err(e) => {
-                        warn!(
-                            context,
-                            "Found backup file {} which could not be opened: {}", name, e
-                        );
-                        // On some Android devices we can't open sql files that are not in our private directory
-                        // (see <https://github.com/deltachat/deltachat-android/issues/1768>). So, compare names
-                        // to still find the newest backup.
-                        let name: String = name.into();
-                        if newest_backup_time == 0
-                            && (newest_backup_name.is_empty() || name > newest_backup_name)
-                        {
-                            newest_backup_path = Some(path);
-                            newest_backup_name = name;
-                        }
-                    }
-                }
-            }
-        }
-    }
     match newest_backup_path {
         Some(path) => Ok(path.to_string_lossy().into_owned()),
         None => bail!("no backup found in {}", dir_name.display()),
@@ -234,11 +181,11 @@ async fn do_initiate_key_transfer(context: &Context) -> Result<String> {
     msg = Message::default();
     msg.viewtype = Viewtype::File;
     msg.param.set(Param::File, setup_file_blob.as_name());
-
+    msg.subject = stock_str::ac_setup_msg_subject(context).await;
     msg.param
         .set(Param::MimeType, "application/autocrypt-setup");
     msg.param.set_cmd(SystemMessage::AutocryptSetupMessage);
-    msg.param.set_int(Param::ForcePlaintext, 1);
+    msg.force_plaintext();
     msg.param.set_int(Param::SkipAutocrypt, 1);
 
     let msg_id = chat::send_msg(context, chat_id, &mut msg).await?;
@@ -449,7 +396,12 @@ fn normalize_setup_code(s: &str) -> String {
     out
 }
 
-async fn imex_inner(context: &Context, what: ImexMode, path: &Path) -> Result<()> {
+async fn imex_inner(
+    context: &Context,
+    what: ImexMode,
+    path: &Path,
+    passphrase: Option<String>,
+) -> Result<()> {
     info!(context, "Import/export dir: {}", path.display());
     ensure!(context.sql.is_open().await, "Database not opened.");
     context.emit_event(EventType::ImexProgress(10));
@@ -467,19 +419,27 @@ async fn imex_inner(context: &Context, what: ImexMode, path: &Path) -> Result<()
         ImexMode::ExportSelfKeys => export_self_keys(context, path).await,
         ImexMode::ImportSelfKeys => import_self_keys(context, path).await,
 
-        ImexMode::ExportBackup => export_backup(context, path).await,
-        // import_backup() will call import_backup_old() if this is an old backup.
-        ImexMode::ImportBackup => import_backup(context, path).await,
+        ImexMode::ExportBackup => {
+            export_backup(context, path, passphrase.unwrap_or_default()).await
+        }
+        ImexMode::ImportBackup => {
+            import_backup(context, path, passphrase.unwrap_or_default()).await?;
+            context.sql.run_migrations(context).await
+        }
     }
 }
 
-/// Import Backup
-async fn import_backup(context: &Context, backup_to_import: &Path) -> Result<()> {
-    if backup_to_import.to_string_lossy().ends_with(".bak") {
-        // Backwards compability
-        return import_backup_old(context, backup_to_import).await;
-    }
-
+/// Imports backup into the currently open database.
+///
+/// The contents of the currently open database will be lost.
+///
+/// `passphrase` is the passphrase used to open backup database. If backup is unencrypted, pass
+/// empty string here.
+async fn import_backup(
+    context: &Context,
+    backup_to_import: &Path,
+    passphrase: String,
+) -> Result<()> {
     info!(
         context,
         "Import \"{}\" to \"{}\".",
@@ -495,12 +455,6 @@ async fn import_backup(context: &Context, backup_to_import: &Path) -> Result<()>
         !context.scheduler.read().await.is_running(),
         "cannot import backup, IO already running"
     );
-    context.sql.close().await;
-    dc_delete_file(context, context.get_dbfile()).await;
-    ensure!(
-        !context.get_dbfile().exists().await,
-        "Cannot delete old database."
-    );
 
     let backup_file = File::open(backup_to_import).await?;
     let file_size = backup_file.metadata().await?.len();
@@ -522,11 +476,15 @@ async fn import_backup(context: &Context, backup_to_import: &Path) -> Result<()>
         if f.path()?.file_name() == Some(OsStr::new(DBFILE_BACKUP_NAME)) {
             // async_tar can't unpack to a specified file name, so we just unpack to the blobdir and then move the unpacked file.
             f.unpack_in(context.get_blobdir()).await?;
-            fs::rename(
-                context.get_blobdir().join(DBFILE_BACKUP_NAME),
-                context.get_dbfile(),
-            )
-            .await?;
+            let unpacked_database = context.get_blobdir().join(DBFILE_BACKUP_NAME);
+            context
+                .sql
+                .import(&unpacked_database, passphrase.clone())
+                .await
+                .context("cannot import unpacked database")?;
+            fs::remove_file(unpacked_database)
+                .await
+                .context("cannot remove unpacked database")?;
         } else {
             // async_tar will unpack to blobdir/BLOBS_BACKUP_NAME, so we move the file afterwards.
             f.unpack_in(context.get_blobdir()).await?;
@@ -541,136 +499,52 @@ async fn import_backup(context: &Context, backup_to_import: &Path) -> Result<()>
         }
     }
 
-    context
-        .sql
-        .open(context, context.get_dbfile(), false)
-        .await
-        .context("Could not re-open db")?;
-
     delete_and_reset_all_device_msgs(context).await?;
 
     Ok(())
 }
 
-async fn import_backup_old(context: &Context, backup_to_import: &Path) -> Result<()> {
-    info!(
-        context,
-        "Import \"{}\" to \"{}\".",
-        backup_to_import.display(),
-        context.get_dbfile().display()
-    );
-
-    ensure!(
-        !context.is_configured().await?,
-        "Cannot import backups to accounts in use."
-    );
-    ensure!(
-        !context.scheduler.read().await.is_running(),
-        "cannot import backup, IO already running"
-    );
-    context.sql.close().await;
-    dc_delete_file(context, context.get_dbfile()).await;
-    ensure!(
-        !context.get_dbfile().exists().await,
-        "Cannot delete old database."
-    );
-
-    ensure!(
-        dc_copy_file(context, backup_to_import, context.get_dbfile()).await,
-        "could not copy file"
-    );
-    /* error already logged */
-    /* re-open copied database file */
-    context
-        .sql
-        .open(context, context.get_dbfile(), false)
-        .await
-        .context("Could not re-open db")?;
-
-    delete_and_reset_all_device_msgs(context).await?;
-
-    let total_files_cnt = context
-        .sql
-        .count("SELECT COUNT(*) FROM backup_blobs;", paramsv![])
-        .await?;
-    info!(
-        context,
-        "***IMPORT-in-progress: total_files_cnt={:?}", total_files_cnt,
-    );
-
-    // Load IDs only for now, without the file contents, to avoid
-    // consuming too much memory.
-    let file_ids = context
-        .sql
-        .query_map(
-            "SELECT id FROM backup_blobs ORDER BY id",
-            paramsv![],
-            |row| row.get(0),
-            |ids| {
-                ids.collect::<std::result::Result<Vec<i64>, _>>()
-                    .map_err(Into::into)
-            },
-        )
-        .await?;
-
-    let mut all_files_extracted = true;
-    for (processed_files_cnt, file_id) in file_ids.into_iter().enumerate() {
-        // Load a single blob into memory
-        let (file_name, file_blob) = context
-            .sql
-            .query_row(
-                "SELECT file_name, file_content FROM backup_blobs WHERE id = ?",
-                paramsv![file_id],
-                |row| {
-                    let file_name: String = row.get(0)?;
-                    let file_blob: Vec<u8> = row.get(1)?;
-                    Ok((file_name, file_blob))
-                },
-            )
-            .await?;
-
-        if context.shall_stop_ongoing().await {
-            all_files_extracted = false;
-            break;
-        }
-        let mut permille = processed_files_cnt * 1000 / total_files_cnt;
-        if permille < 10 {
-            permille = 10
-        }
-        if permille > 990 {
-            permille = 990
-        }
-        context.emit_event(EventType::ImexProgress(permille));
-        if file_blob.is_empty() {
-            continue;
-        }
-
-        let path_filename = context.get_blobdir().join(file_name);
-        dc_write_file(context, &path_filename, &file_blob).await?;
-    }
-
-    if all_files_extracted {
-        // only delete backup_blobs if all files were successfully extracted
-        context
-            .sql
-            .execute("DROP TABLE backup_blobs;", paramsv![])
-            .await?;
-        context.sql.execute("VACUUM;", paramsv![]).await.ok();
-        Ok(())
-    } else {
-        bail!("received stop signal");
-    }
-}
-
 /*******************************************************************************
  * Export backup
  ******************************************************************************/
-#[allow(unused)]
-async fn export_backup(context: &Context, dir: &Path) -> Result<()> {
+
+/// Returns Ok((temp_db_path, temp_path, dest_path)) on success. Unencrypted database can be
+/// written to temp_db_path. The backup can then be written to temp_path. If the backup succeeded,
+/// it can be renamed to dest_path. This guarantees that the backup is complete.
+async fn get_next_backup_path(
+    folder: &Path,
+    backup_time: i64,
+) -> Result<(PathBuf, PathBuf, PathBuf)> {
+    let folder = PathBuf::from(folder);
+    let stem = chrono::NaiveDateTime::from_timestamp(backup_time, 0)
+        // Don't change this file name format, in has_backup() we use string comparison to determine which backup is newer:
+        .format("delta-chat-backup-%Y-%m-%d")
+        .to_string();
+
+    // 64 backup files per day should be enough for everyone
+    for i in 0..64 {
+        let mut tempdbfile = folder.clone();
+        tempdbfile.push(format!("{}-{:02}.db", stem, i));
+
+        let mut tempfile = folder.clone();
+        tempfile.push(format!("{}-{:02}.tar.part", stem, i));
+
+        let mut destfile = folder.clone();
+        destfile.push(format!("{}-{:02}.tar", stem, i));
+
+        if !tempdbfile.exists().await && !tempfile.exists().await && !destfile.exists().await {
+            return Ok((tempdbfile, tempfile, destfile));
+        }
+    }
+    bail!("could not create backup file, disk full?");
+}
+
+async fn export_backup(context: &Context, dir: &Path, passphrase: String) -> Result<()> {
     // get a fine backup file name (the name includes the date so that multiple backup instances are possible)
     let now = time();
-    let (temp_path, dest_path) = get_next_backup_path(dir, now).await?;
-    let _d = DeleteOnDrop(temp_path.clone());
+    let (temp_db_path, temp_path, dest_path) = get_next_backup_path(dir, now).await?;
+    let _d1 = DeleteOnDrop(temp_db_path.clone());
+    let _d2 = DeleteOnDrop(temp_path.clone());
 
     context
         .sql
@@ -682,16 +556,14 @@ async fn export_backup(context: &Context, dir: &Path) -> Result<()> {
         .sql
         .execute("VACUUM;", paramsv![])
         .await
-        .map_err(|e| warn!(context, "Vacuum failed, exporting anyway {}", e));
+        .map_err(|e| warn!(context, "Vacuum failed, exporting anyway {}", e))
+        .ok();
 
     ensure!(
         !context.scheduler.read().await.is_running(),
         "cannot export backup, IO already running"
     );
 
-    // we close the database during the export
-    context.sql.close().await;
-
     info!(
         context,
         "Backup '{}' to '{}'.",
@@ -699,10 +571,13 @@ async fn export_backup(context: &Context, dir: &Path) -> Result<()> {
         dest_path.display(),
     );
 
-    let res = export_backup_inner(context, &temp_path).await;
+    context
+        .sql
+        .export(&temp_db_path, passphrase)
+        .await
+        .with_context(|| format!("failed to backup plaintext database to {:?}", temp_db_path))?;
 
-    // we re-open the database after export is finished
-    context.sql.open(context, context.get_dbfile(), false).await;
+    let res = export_backup_inner(context, &temp_db_path, &temp_path).await;
 
     match &res {
         Ok(_) => {
@@ -721,18 +596,21 @@ impl Drop for DeleteOnDrop {
     fn drop(&mut self) {
         let file = self.0.clone();
         // Not using dc_delete_file() here because it would send a DeletedBlobFile event
-        async_std::task::block_on(async move { fs::remove_file(file).await.ok() });
+        async_std::task::block_on(fs::remove_file(file)).ok();
     }
 }
 
-async fn export_backup_inner(context: &Context, temp_path: &PathBuf) -> Result<()> {
+async fn export_backup_inner(
+    context: &Context,
+    temp_db_path: &Path,
+    temp_path: &Path,
+) -> Result<()> {
     let file = File::create(temp_path).await?;
 
     let mut builder = async_tar::Builder::new(file);
 
-    // append_path_with_name() wants the source path as the first argument, append_dir_all() wants it as the second argument.
     builder
-        .append_path_with_name(context.get_dbfile(), DBFILE_BACKUP_NAME)
+        .append_path_with_name(temp_db_path, DBFILE_BACKUP_NAME)
         .await?;
 
     let read_dir: Vec<_> = fs::read_dir(context.get_blobdir()).await?.collect().await;
@@ -759,7 +637,7 @@ async fn export_backup_inner(context: &Context, temp_path: &PathBuf) -> Result<(
         let progress = 1000 * written_files / count;
         if progress != last_progress && progress > 10 && progress < 1000 {
             // We already emitted ImexProgress(10) above
-            emit_event!(context, EventType::ImexProgress(progress));
+            context.emit_event(EventType::ImexProgress(progress));
             last_progress = progress;
         }
     }
@@ -936,9 +814,7 @@ mod tests {
 
     #[async_std::test]
     async fn test_render_setup_file() {
-        let t = TestContext::new().await;
-
-        t.configure_alice().await;
+        let t = TestContext::new_alice().await;
         let msg = render_setup_file(&t, "hello").await.unwrap();
         println!("{}", &msg);
         // Check some substrings, indicating things got substituted.
@@ -955,11 +831,10 @@ mod tests {
 
     #[async_std::test]
     async fn test_render_setup_file_newline_replace() {
-        let t = TestContext::new().await;
+        let t = TestContext::new_alice().await;
         t.set_stock_translation(StockMessage::AcSetupMsgBody, "hello\r\nthere".to_string())
             .await
             .unwrap();
-        t.configure_alice().await;
         let msg = render_setup_file(&t, "pw").await.unwrap();
         println!("{}", &msg);
         assert!(msg.contains("<p>hello<br>there</p>"));
@@ -1012,16 +887,14 @@ mod tests {
 
     #[async_std::test]
     async fn test_export_and_import_key() {
-        let context = TestContext::new().await;
-        context.configure_alice().await;
+        let context = TestContext::new_alice().await;
         let blobdir = context.ctx.get_blobdir();
-        if let Err(err) = imex(&context.ctx, ImexMode::ExportSelfKeys, blobdir).await {
+        if let Err(err) = imex(&context.ctx, ImexMode::ExportSelfKeys, blobdir, None).await {
             panic!("got error on export: {:?}", err);
         }
 
-        let context2 = TestContext::new().await;
-        context2.configure_alice().await;
-        if let Err(err) = imex(&context2.ctx, ImexMode::ImportSelfKeys, blobdir).await {
+        let context2 = TestContext::new_alice().await;
+        if let Err(err) = imex(&context2.ctx, ImexMode::ImportSelfKeys, blobdir, None).await {
             panic!("got error on import: {:?}", err);
         }
     }

src/key.rs

@@ -4,7 +4,7 @@ use std::collections::BTreeMap;
 use std::fmt;
 use std::io::Cursor;
 
-use anyhow::{format_err, Result};
+use anyhow::{format_err, Context as _, Result};
 use async_trait::async_trait;
 use num_traits::FromPrimitive;
 use pgp::composed::Deserializable;
@@ -50,8 +50,7 @@ pub trait DcKey: Serialize + Deserializable + KeyTrait + Clone {
     /// the ASCII-armored representation.
     fn from_asc(data: &str) -> Result<(Self::KeyType, BTreeMap<String, String>)> {
         let bytes = data.as_bytes();
-        Self::KeyType::from_armor_single(Cursor::new(bytes))
-            .map_err(|err| format_err!("rPGP error: {}", err))
+        Self::KeyType::from_armor_single(Cursor::new(bytes)).context("rPGP error")
     }
 
     /// Load the users' default key from the database.
@@ -202,7 +201,7 @@ async fn generate_keypair(context: &Context) -> Result<KeyPair> {
     let addr = context
         .get_config(Config::ConfiguredAddr)
         .await?
-        .ok_or_else(|| format_err!("No address configured"))?;
+        .context("no address configured")?;
     let addr = EmailAddress::new(&addr)?;
     let _guard = context.generating_key_mutex.lock().await;
 
@@ -289,13 +288,13 @@ pub async fn store_self_keypair(
             paramsv![public_key, secret_key],
         )
         .await
-        .map_err(|err| err.context("failed to remove old use of key"))?;
+        .context("failed to remove old use of key")?;
     if default == KeyPairUse::Default {
         context
             .sql
             .execute("UPDATE keypairs SET is_default=0;", paramsv![])
             .await
-            .map_err(|err| err.context("failed to clear default"))?;
+            .context("failed to clear default")?;
     }
     let is_default = match default {
         KeyPairUse::Default => true as i32,
@@ -313,7 +312,7 @@ pub async fn store_self_keypair(
             paramsv![addr, is_default, public_key, secret_key, t],
         )
         .await
-        .map_err(|err| err.context("failed to insert keypair"))?;
+        .context("failed to insert keypair")?;
 
     Ok(())
 }
@@ -510,8 +509,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
     #[async_std::test]
     async fn test_load_self_existing() {
         let alice = alice_keypair();
-        let t = TestContext::new().await;
-        t.configure_alice().await;
+        let t = TestContext::new_alice().await;
         let pubkey = SignedPublicKey::load_self(&t).await.unwrap();
         assert_eq!(alice.public, pubkey);
         let seckey = SignedSecretKey::load_self(&t).await.unwrap();
@@ -521,7 +519,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
     #[async_std::test]
     async fn test_load_self_generate_public() {
         let t = TestContext::new().await;
-        t.set_config(Config::ConfiguredAddr, Some("alice@example.com"))
+        t.set_config(Config::ConfiguredAddr, Some("alice@example.org"))
             .await
             .unwrap();
         let key = SignedPublicKey::load_self(&t).await;
@@ -531,7 +529,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
     #[async_std::test]
     async fn test_load_self_generate_secret() {
         let t = TestContext::new().await;
-        t.set_config(Config::ConfiguredAddr, Some("alice@example.com"))
+        t.set_config(Config::ConfiguredAddr, Some("alice@example.org"))
             .await
             .unwrap();
         let key = SignedSecretKey::load_self(&t).await;
@@ -543,7 +541,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
         use std::thread;
 
         let t = TestContext::new().await;
-        t.set_config(Config::ConfiguredAddr, Some("alice@example.com"))
+        t.set_config(Config::ConfiguredAddr, Some("alice@example.org"))
             .await
             .unwrap();
         let thr0 = {
@@ -589,27 +587,6 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
         assert_eq!(nrows().await, 1);
     }
 
-    // Convenient way to create a new key if you need one, run with
-    // `cargo test key::tests::gen_key`.
-    // #[test]
-    // fn gen_key() {
-    //     let name = "fiona";
-    //     let keypair = crate::pgp::create_keypair(
-    //         EmailAddress::new(&format!("{}@example.net", name)).unwrap(),
-    //     )
-    //     .unwrap();
-    //     std::fs::write(
-    //         format!("test-data/key/{}-public.asc", name),
-    //         keypair.public.to_base64(),
-    //     )
-    //     .unwrap();
-    //     std::fs::write(
-    //         format!("test-data/key/{}-secret.asc", name),
-    //         keypair.secret.to_base64(),
-    //     )
-    //     .unwrap();
-    // }
-
     #[test]
     fn test_fingerprint_from_str() {
         let res = Fingerprint::new(vec![

src/keyring.rs

@@ -79,8 +79,7 @@ mod tests {
     #[async_std::test]
     async fn test_keyring_load_self() {
         // new_self() implies load_self()
-        let t = TestContext::new().await;
-        t.configure_alice().await;
+        let t = TestContext::new_alice().await;
         let alice = alice_keypair();
 
         let pub_ring: Keyring<SignedPublicKey> = Keyring::new_self(&t).await.unwrap();

src/lib.rs

@@ -12,7 +12,8 @@
 #![allow(
     clippy::match_bool,
     clippy::eval_order_dependence,
-    clippy::bool_assert_comparison
+    clippy::bool_assert_comparison,
+    clippy::manual_split_once
 )]
 
 #[macro_use]
@@ -55,6 +56,7 @@ mod configure;
 pub mod constants;
 pub mod contact;
 pub mod context;
+pub mod download;
 mod e2ee;
 pub mod ephemeral;
 mod imap;
@@ -67,7 +69,6 @@ pub mod key;
 mod keyring;
 pub mod location;
 mod login_param;
-pub mod lot;
 pub mod message;
 mod mimefactory;
 pub mod mimeparser;
@@ -77,17 +78,22 @@ pub mod peerstate;
 pub mod pgp;
 pub mod provider;
 pub mod qr;
+pub mod qr_code_generator;
 pub mod quota;
 pub mod securejoin;
 mod simplify;
 mod smtp;
 pub mod stock_str;
+mod sync;
 mod token;
+mod update_helper;
+pub mod webxdc;
 #[macro_use]
 mod dehtml;
 mod color;
 pub mod html;
 pub mod plaintext;
+pub mod summary;
 
 pub mod dc_receive_imf;
 pub mod dc_tools;

src/location.rs

@@ -1,7 +1,7 @@
 //! Location handling.
 use std::convert::TryFrom;
 
-use anyhow::{ensure, Error};
+use anyhow::{ensure, Result};
 use bitflags::bitflags;
 use quick_xml::events::{BytesEnd, BytesStart, BytesText};
 
@@ -63,7 +63,7 @@ impl Kml {
         Default::default()
     }
 
-    pub fn parse(context: &Context, to_parse: &[u8]) -> Result<Self, Error> {
+    pub fn parse(context: &Context, to_parse: &[u8]) -> Result<Self> {
         ensure!(to_parse.len() <= 1024 * 1024, "kml-file is too large");
 
         let mut reader = quick_xml::Reader::from_reader(to_parse);
@@ -191,89 +191,97 @@ impl Kml {
 }
 
 /// Enables location streaming in chat identified by `chat_id` for `seconds` seconds.
-pub async fn send_locations_to_chat(context: &Context, chat_id: ChatId, seconds: i64) {
+pub async fn send_locations_to_chat(
+    context: &Context,
+    chat_id: ChatId,
+    seconds: i64,
+) -> Result<()> {
+    ensure!(seconds >= 0);
+    ensure!(!chat_id.is_special());
     let now = time();
-    if !(seconds < 0 || chat_id.is_special()) {
-        let is_sending_locations_before =
-            is_sending_locations_to_chat(context, Some(chat_id)).await;
-        if context
-            .sql
-            .execute(
-                "UPDATE chats    \
-             SET locations_send_begin=?,        \
-             locations_send_until=?  \
-             WHERE id=?",
-                paramsv![
-                    if 0 != seconds { now } else { 0 },
-                    if 0 != seconds { now + seconds } else { 0 },
-                    chat_id,
-                ],
-            )
+    let is_sending_locations_before = is_sending_locations_to_chat(context, Some(chat_id)).await?;
+    context
+        .sql
+        .execute(
+            "UPDATE chats    \
+         SET locations_send_begin=?,        \
+         locations_send_until=?  \
+         WHERE id=?",
+            paramsv![
+                if 0 != seconds { now } else { 0 },
+                if 0 != seconds { now + seconds } else { 0 },
+                chat_id,
+            ],
+        )
+        .await?;
+    if 0 != seconds && !is_sending_locations_before {
+        let mut msg = Message::new(Viewtype::Text);
+        msg.text = Some(stock_str::msg_location_enabled(context).await);
+        msg.param.set_cmd(SystemMessage::LocationStreamingEnabled);
+        chat::send_msg(context, chat_id, &mut msg)
             .await
-            .is_ok()
-        {
-            if 0 != seconds && !is_sending_locations_before {
-                let mut msg = Message::new(Viewtype::Text);
-                msg.text = Some(stock_str::msg_location_enabled(context).await);
-                msg.param.set_cmd(SystemMessage::LocationStreamingEnabled);
-                chat::send_msg(context, chat_id, &mut msg)
-                    .await
-                    .unwrap_or_default();
-            } else if 0 == seconds && is_sending_locations_before {
-                let stock_str = stock_str::msg_location_disabled(context).await;
-                chat::add_info_msg(context, chat_id, stock_str, now).await;
-            }
-            context.emit_event(EventType::ChatModified(chat_id));
-            if 0 != seconds {
-                schedule_maybe_send_locations(context, false).await;
-                job::add(
-                    context,
-                    job::Job::new(
-                        job::Action::MaybeSendLocationsEnded,
-                        chat_id.to_u32(),
-                        Params::new(),
-                        seconds + 1,
-                    ),
-                )
-                .await;
-            }
-        }
+            .unwrap_or_default();
+    } else if 0 == seconds && is_sending_locations_before {
+        let stock_str = stock_str::msg_location_disabled(context).await;
+        chat::add_info_msg(context, chat_id, &stock_str, now).await?;
     }
+    context.emit_event(EventType::ChatModified(chat_id));
+    if 0 != seconds {
+        schedule_maybe_send_locations(context, false).await?;
+        job::add(
+            context,
+            job::Job::new(
+                job::Action::MaybeSendLocationsEnded,
+                chat_id.to_u32(),
+                Params::new(),
+                seconds + 1,
+            ),
+        )
+        .await?;
+    }
+    Ok(())
 }
 
-async fn schedule_maybe_send_locations(context: &Context, force_schedule: bool) {
-    if force_schedule || !job::action_exists(context, job::Action::MaybeSendLocations).await {
+async fn schedule_maybe_send_locations(context: &Context, force_schedule: bool) -> Result<()> {
+    if force_schedule || !job::action_exists(context, job::Action::MaybeSendLocations).await? {
         job::add(
             context,
             job::Job::new(job::Action::MaybeSendLocations, 0, Params::new(), 60),
         )
-        .await;
+        .await?;
     };
+    Ok(())
 }
 
 /// Returns whether `chat_id` or any chat is sending locations.
 ///
 /// If `chat_id` is `Some` only that chat is checked, otherwise returns `true` if any chat
 /// is sending locations.
-pub async fn is_sending_locations_to_chat(context: &Context, chat_id: Option<ChatId>) -> bool {
-    match chat_id {
-        Some(chat_id) => context
-            .sql
-            .exists(
-                "SELECT COUNT(id) FROM chats  WHERE id=?  AND locations_send_until>?;",
-                paramsv![chat_id, time()],
-            )
-            .await
-            .unwrap_or_default(),
-        None => context
-            .sql
-            .exists(
-                "SELECT COUNT(id) FROM chats  WHERE locations_send_until>?;",
-                paramsv![time()],
-            )
-            .await
-            .unwrap_or_default(),
-    }
+pub async fn is_sending_locations_to_chat(
+    context: &Context,
+    chat_id: Option<ChatId>,
+) -> Result<bool> {
+    let exists = match chat_id {
+        Some(chat_id) => {
+            context
+                .sql
+                .exists(
+                    "SELECT COUNT(id) FROM chats  WHERE id=?  AND locations_send_until>?;",
+                    paramsv![chat_id, time()],
+                )
+                .await?
+        }
+        None => {
+            context
+                .sql
+                .exists(
+                    "SELECT COUNT(id) FROM chats  WHERE locations_send_until>?;",
+                    paramsv![time()],
+                )
+                .await?
+        }
+    };
+    Ok(exists)
 }
 
 pub async fn set(context: &Context, latitude: f64, longitude: f64, accuracy: f64) -> bool {
@@ -288,7 +296,11 @@ pub async fn set(context: &Context, latitude: f64, longitude: f64, accuracy: f64
             "SELECT id FROM chats WHERE locations_send_until>?;",
             paramsv![time()],
             |row| row.get::<_, i32>(0),
-            |chats| chats.collect::<Result<Vec<_>, _>>().map_err(Into::into),
+            |chats| {
+                chats
+                    .collect::<std::result::Result<Vec<_>, _>>()
+                    .map_err(Into::into)
+            },
         )
         .await
     {
@@ -313,7 +325,7 @@ pub async fn set(context: &Context, latitude: f64, longitude: f64, accuracy: f64
         if continue_streaming {
             context.emit_event(EventType::LocationChanged(Some(DC_CONTACT_ID_SELF)));
         };
-        schedule_maybe_send_locations(context, false).await;
+        schedule_maybe_send_locations(context, false).await.ok();
     }
 
     continue_streaming
@@ -325,7 +337,7 @@ pub async fn get_range(
     contact_id: Option<u32>,
     timestamp_from: i64,
     mut timestamp_to: i64,
-) -> Result<Vec<Location>, Error> {
+) -> Result<Vec<Location>> {
     if timestamp_to == 0 {
         timestamp_to = time() + 10;
     }
@@ -400,7 +412,7 @@ fn is_marker(txt: &str) -> bool {
 }
 
 /// Deletes all locations from the database.
-pub async fn delete_all(context: &Context) -> Result<(), Error> {
+pub async fn delete_all(context: &Context) -> Result<()> {
     context
         .sql
         .execute("DELETE FROM locations;", paramsv![])
@@ -409,7 +421,7 @@ pub async fn delete_all(context: &Context) -> Result<(), Error> {
     Ok(())
 }
 
-pub async fn get_kml(context: &Context, chat_id: ChatId) -> Result<(String, u32), Error> {
+pub async fn get_kml(context: &Context, chat_id: ChatId) -> Result<(String, u32)> {
     let mut last_added_location_id = 0;
 
     let self_addr = context
@@ -517,7 +529,7 @@ pub async fn set_kml_sent_timestamp(
     context: &Context,
     chat_id: ChatId,
     timestamp: i64,
-) -> Result<(), Error> {
+) -> Result<()> {
     context
         .sql
         .execute(
@@ -528,11 +540,7 @@ pub async fn set_kml_sent_timestamp(
     Ok(())
 }
 
-pub async fn set_msg_location_id(
-    context: &Context,
-    msg_id: MsgId,
-    location_id: u32,
-) -> Result<(), Error> {
+pub async fn set_msg_location_id(context: &Context, msg_id: MsgId, location_id: u32) -> Result<()> {
     context
         .sql
         .execute(
@@ -544,17 +552,20 @@ pub async fn set_msg_location_id(
     Ok(())
 }
 
-pub async fn save(
+/// Saves given locations to the database.
+///
+/// Returns the database row ID of the location with the highest timestamp.
+pub(crate) async fn save(
     context: &Context,
     chat_id: ChatId,
     contact_id: u32,
     locations: &[Location],
     independent: bool,
-) -> Result<u32, Error> {
+) -> Result<Option<u32>> {
     ensure!(!chat_id.is_special(), "Invalid chat id");
 
     let mut newest_timestamp = 0;
-    let mut newest_location_id = 0;
+    let mut newest_location_id = None;
 
     let stmt_insert = "INSERT INTO locations\
              (timestamp, from_id, chat_id, latitude, longitude, accuracy, independent) \
@@ -592,12 +603,12 @@ pub async fn save(
                 drop(stmt_test);
                 drop(stmt_insert);
                 newest_timestamp = timestamp;
-                newest_location_id = conn.last_insert_rowid();
+                newest_location_id = Some(u32::try_from(conn.last_insert_rowid())?);
             }
         }
     }
 
-    Ok(u32::try_from(newest_location_id)?)
+    Ok(newest_location_id)
 }
 
 pub(crate) async fn job_maybe_send_locations(context: &Context, _job: &Job) -> job::Status {
@@ -630,7 +641,7 @@ pub(crate) async fn job_maybe_send_locations(context: &Context, _job: &Job) -> j
             },
             |rows| {
                 rows.filter_map(|v| v.transpose())
-                    .collect::<Result<Vec<_>, _>>()
+                    .collect::<std::result::Result<Vec<_>, _>>()
                     .map_err(Into::into)
             },
         )
@@ -690,7 +701,7 @@ pub(crate) async fn job_maybe_send_locations(context: &Context, _job: &Job) -> j
     }
 
     if continue_streaming {
-        schedule_maybe_send_locations(context, true).await;
+        job_try!(schedule_maybe_send_locations(context, true).await);
     }
     job::Status::Finished(Ok(()))
 }
@@ -736,7 +747,7 @@ pub(crate) async fn job_maybe_send_locations_ended(
             );
 
             let stock_str = stock_str::msg_location_disabled(context).await;
-            chat::add_info_msg(context, chat_id, stock_str, now).await;
+            job_try!(chat::add_info_msg(context, chat_id, &stock_str, now).await);
             context.emit_event(EventType::ChatModified(chat_id));
         }
     }

src/log.rs

@@ -1,6 +1,7 @@
 //! # Logging.
 
 use crate::context::Context;
+use async_std::task::block_on;
 
 #[macro_export]
 macro_rules! info {
@@ -13,7 +14,7 @@ macro_rules! info {
                            file = file!(),
                            line = line!(),
                            msg = &formatted);
-        emit_event!($ctx, $crate::EventType::Info(full));
+        $ctx.emit_event($crate::EventType::Info(full));
     }};
 }
 
@@ -28,7 +29,7 @@ macro_rules! warn {
                            file = file!(),
                            line = line!(),
                            msg = &formatted);
-        emit_event!($ctx, $crate::EventType::Warning(full));
+        $ctx.emit_event($crate::EventType::Warning(full));
     }};
 }
 
@@ -39,15 +40,26 @@ macro_rules! error {
     };
     ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {{
         let formatted = format!($msg, $($args),*);
-        emit_event!($ctx, $crate::EventType::Error(formatted));
+        $ctx.set_last_error(&formatted);
+        $ctx.emit_event($crate::EventType::Error(formatted));
     }};
 }
 
-#[macro_export]
-macro_rules! emit_event {
-    ($ctx:expr, $event:expr) => {
-        $ctx.emit_event($event);
-    };
+impl Context {
+    /// Set last error string.
+    /// Implemented as blocking as used from macros in different, not always async blocks.
+    pub fn set_last_error(&self, error: &str) {
+        block_on(async move {
+            let mut last_error = self.last_error.write().await;
+            *last_error = error.to_string();
+        });
+    }
+
+    /// Get last error string.
+    pub async fn get_last_error(&self) -> String {
+        let last_error = &*self.last_error.read().await;
+        last_error.clone()
+    }
 }
 
 pub trait LogExt<T, E>
@@ -136,8 +148,36 @@ impl<T, E: std::fmt::Display> LogExt<T, E> for Result<T, E> {
             );
             // We can't use the warn!() macro here as the file!() and line!() macros
             // don't work with #[track_caller]
-            emit_event!(context, crate::EventType::Warning(full));
+            context.emit_event(crate::EventType::Warning(full));
         };
         self
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::test_utils::TestContext;
+    use anyhow::Result;
+
+    #[async_std::test]
+    async fn test_get_last_error() -> Result<()> {
+        let t = TestContext::new().await;
+
+        assert_eq!(t.get_last_error().await, "");
+
+        error!(t, "foo-error");
+        assert_eq!(t.get_last_error().await, "foo-error");
+
+        warn!(t, "foo-warning");
+        assert_eq!(t.get_last_error().await, "foo-error");
+
+        info!(t, "foo-info");
+        assert_eq!(t.get_last_error().await, "foo-error");
+
+        error!(t, "bar-error");
+        error!(t, "baz-error");
+        assert_eq!(t.get_last_error().await, "baz-error");
+
+        Ok(())
+    }
+}

src/login_param.rs

@@ -11,8 +11,10 @@ use anyhow::Result;
 use async_std::io;
 use async_std::net::TcpStream;
 
+use async_native_tls::Certificate;
 pub use async_smtp::ServerAddress;
 use fast_socks5::client::Socks5Stream;
+use once_cell::sync::Lazy;
 
 #[derive(Copy, Clone, Debug, Display, FromPrimitive, PartialEq, Eq)]
 #[repr(u32)]
@@ -368,8 +370,18 @@ fn get_readable_flags(flags: i32) -> String {
     res
 }
 
+// this certificate is missing on older android devices (eg. lg with android6 from 2017)
+// certificate downloaded from https://letsencrypt.org/certificates/
+static LETSENCRYPT_ROOT: Lazy<Certificate> = Lazy::new(|| {
+    Certificate::from_der(include_bytes!(
+        "../assets/root-certificates/letsencrypt/isrgrootx1.der"
+    ))
+    .unwrap()
+});
+
 pub fn dc_build_tls(strict_tls: bool) -> async_native_tls::TlsConnector {
-    let tls_builder = async_native_tls::TlsConnector::new();
+    let tls_builder =
+        async_native_tls::TlsConnector::new().add_root_certificate(LETSENCRYPT_ROOT.clone());
 
     if strict_tls {
         tls_builder
@@ -401,7 +413,7 @@ mod tests {
         let t = TestContext::new().await;
 
         let param = LoginParam {
-            addr: "alice@example.com".to_string(),
+            addr: "alice@example.org".to_string(),
             imap: ServerLoginParam {
                 server: "imap.example.com".to_string(),
                 user: "alice".to_string(),
@@ -412,7 +424,7 @@ mod tests {
             },
             smtp: ServerLoginParam {
                 server: "smtp.example.com".to_string(),
-                user: "alice@example.com".to_string(),
+                user: "alice@example.org".to_string(),
                 password: "bar".to_string(),
                 port: 456,
                 security: Socket::Ssl,
@@ -430,4 +442,13 @@ mod tests {
         assert_eq!(param, loaded);
         Ok(())
     }
+
+    #[async_std::test]
+    async fn test_build_tls() -> Result<()> {
+        // we are using some additional root certificates.
+        // make sure, they do not break construction of TlsConnector
+        let _ = dc_build_tls(true);
+        let _ = dc_build_tls(false);
+        Ok(())
+    }
 }

src/lot.rs

@@ -1,141 +0,0 @@
-//! # Legacy generic return values for C API.
-
-use deltachat_derive::{FromSql, ToSql};
-
-use crate::key::Fingerprint;
-
-/// An object containing a set of values.
-/// The meaning of the values is defined by the function returning the object.
-/// Lot objects are created
-/// eg. by chatlist.get_summary() or dc_msg_get_summary().
-///
-/// *Lot* is used in the meaning *heap* here.
-#[derive(Default, Debug, Clone)]
-pub struct Lot {
-    pub(crate) text1_meaning: Meaning,
-    pub(crate) text1: Option<String>,
-    pub(crate) text2: Option<String>,
-    pub(crate) timestamp: i64,
-    pub(crate) state: LotState,
-    pub(crate) id: u32,
-    pub(crate) fingerprint: Option<Fingerprint>,
-    pub(crate) invitenumber: Option<String>,
-    pub(crate) auth: Option<String>,
-}
-
-#[repr(u8)]
-#[derive(
-    Debug, Display, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive, ToSql, FromSql,
-)]
-pub enum Meaning {
-    None = 0,
-    Text1Draft = 1,
-    Text1Username = 2,
-    Text1Self = 3,
-}
-
-impl Default for Meaning {
-    fn default() -> Self {
-        Meaning::None
-    }
-}
-
-impl Lot {
-    pub fn new() -> Self {
-        Default::default()
-    }
-
-    pub fn get_text1(&self) -> Option<&str> {
-        self.text1.as_deref()
-    }
-
-    pub fn get_text2(&self) -> Option<&str> {
-        self.text2.as_deref()
-    }
-
-    pub fn get_text1_meaning(&self) -> Meaning {
-        self.text1_meaning
-    }
-
-    pub fn get_state(&self) -> LotState {
-        self.state
-    }
-
-    pub fn get_id(&self) -> u32 {
-        self.id
-    }
-
-    pub fn get_timestamp(&self) -> i64 {
-        self.timestamp
-    }
-}
-
-#[repr(u32)]
-#[derive(
-    Debug, Display, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive, ToSql, FromSql,
-)]
-pub enum LotState {
-    // Default
-    Undefined = 0,
-
-    // Qr States
-    /// id=contact
-    QrAskVerifyContact = 200,
-
-    /// text1=groupname
-    QrAskVerifyGroup = 202,
-
-    /// id=contact
-    QrFprOk = 210,
-
-    /// id=contact
-    QrFprMismatch = 220,
-
-    /// test1=formatted fingerprint
-    QrFprWithoutAddr = 230,
-
-    /// text1=domain
-    QrAccount = 250,
-
-    /// text1=domain, text2=instance pattern
-    QrWebrtcInstance = 260,
-
-    /// id=contact
-    QrAddr = 320,
-
-    /// text1=text
-    QrText = 330,
-
-    /// text1=URL
-    QrUrl = 332,
-
-    /// text1=error string
-    QrError = 400,
-
-    QrWithdrawVerifyContact = 500,
-
-    /// text1=groupname
-    QrWithdrawVerifyGroup = 502,
-
-    QrReviveVerifyContact = 510,
-
-    /// text1=groupname
-    QrReviveVerifyGroup = 512,
-
-    // Message States
-    MsgInFresh = 10,
-    MsgInNoticed = 13,
-    MsgInSeen = 16,
-    MsgOutPreparing = 18,
-    MsgOutDraft = 19,
-    MsgOutPending = 20,
-    MsgOutFailed = 24,
-    MsgOutDelivered = 26,
-    MsgOutMdnRcvd = 28,
-}
-
-impl Default for LotState {
-    fn default() -> Self {
-        LotState::Undefined
-    }
-}

src/mimefactory.rs

@@ -2,7 +2,7 @@
 
 use std::convert::TryInto;
 
-use anyhow::{bail, ensure, format_err, Result};
+use anyhow::{bail, ensure, Context as _, Result};
 use chrono::TimeZone;
 use lettre_email::{mime, Address, Header, MimeMultipartType, PartBuilder};
 
@@ -68,18 +68,31 @@ pub struct MimeFactory<'a> {
     references: String,
     req_mdn: bool,
     last_added_location_id: u32,
+
+    /// If the created mime-structure contains sync-items,
+    /// the IDs of these items are listed here.
+    /// The IDs are returned via `RenderedEmail`
+    /// and must be deleted if the message is actually queued for sending.
+    sync_ids_to_delete: Option<String>,
+
     attach_selfavatar: bool,
 }
 
 /// Result of rendering a message, ready to be submitted to a send job.
 #[derive(Debug, Clone)]
 pub struct RenderedEmail {
-    pub message: Vec<u8>,
+    pub message: String,
     // pub envelope: Envelope,
     pub is_encrypted: bool,
     pub is_gossiped: bool,
     pub last_added_location_id: u32,
 
+    /// A comma-separated string of sync-IDs that are used by the rendered email
+    /// and must be deleted once the message is actually queued for sending
+    /// (deletion must be done by `delete_sync_ids()`).
+    /// If the rendered email is not queued for sending, the IDs must not be deleted.
+    pub sync_ids_to_delete: Option<String>,
+
     /// Message ID (Message in the sense of Email)
     pub rfc724_mid: String,
     pub subject: String,
@@ -141,6 +154,12 @@ impl<'a> MimeFactory<'a> {
 
         if chat.is_self_talk() {
             recipients.push((from_displayname.to_string(), from_addr.to_string()));
+        } else if chat.is_mailing_list() {
+            let list_post = chat
+                .param
+                .get(Param::ListPost)
+                .context("Can't write to mailinglist without ListPost param")?;
+            recipients.push(("".to_string(), list_post.to_string()));
         } else {
             context
                 .sql
@@ -188,7 +207,6 @@ impl<'a> MimeFactory<'a> {
             )
             .await?;
 
-        let default_str = stock_str::status_line(context).await;
         let factory = MimeFactory {
             from_addr,
             from_displayname,
@@ -196,7 +214,7 @@ impl<'a> MimeFactory<'a> {
             selfstatus: context
                 .get_config(Config::Selfstatus)
                 .await?
-                .unwrap_or(default_str),
+                .unwrap_or_default(),
             recipients,
             timestamp: msg.timestamp_sort,
             loaded: Loaded::Message { chat },
@@ -205,6 +223,7 @@ impl<'a> MimeFactory<'a> {
             references,
             req_mdn,
             last_added_location_id: 0,
+            sync_ids_to_delete: None,
             attach_selfavatar,
         };
         Ok(factory)
@@ -226,11 +245,10 @@ impl<'a> MimeFactory<'a> {
             .get_config(Config::Displayname)
             .await?
             .unwrap_or_default();
-        let default_str = stock_str::status_line(context).await;
         let selfstatus = context
             .get_config(Config::Selfstatus)
             .await?
-            .unwrap_or(default_str);
+            .unwrap_or_default();
         let timestamp = dc_create_smeared_timestamp(context).await;
 
         let res = MimeFactory::<'a> {
@@ -249,6 +267,7 @@ impl<'a> MimeFactory<'a> {
             references: String::default(),
             req_mdn: false,
             last_added_location_id: 0,
+            sync_ids_to_delete: None,
             attach_selfavatar: false,
         };
 
@@ -262,7 +281,7 @@ impl<'a> MimeFactory<'a> {
         let self_addr = context
             .get_config(Config::ConfiguredAddr)
             .await?
-            .ok_or_else(|| format_err!("Not configured"))?;
+            .context("not configured")?;
 
         let mut res = Vec::new();
         for (_, addr) in self
@@ -316,6 +335,10 @@ impl<'a> MimeFactory<'a> {
             Loaded::Message { chat } => {
                 if chat.is_protected() {
                     false
+                } else if chat.typ == Chattype::Broadcast {
+                    // encryption may disclose recipients;
+                    // this is probably a worse issue than not opportunistically (!) encrypting
+                    true
                 } else {
                     self.msg
                         .param
@@ -342,7 +365,7 @@ impl<'a> MimeFactory<'a> {
         match &self.loaded {
             Loaded::Message { chat } => {
                 // beside key- and member-changes, force re-gossip every 48 hours
-                let gossiped_timestamp = chat.get_gossiped_timestamp(context).await?;
+                let gossiped_timestamp = chat.id.get_gossiped_timestamp(context).await?;
                 if time() > gossiped_timestamp + (2 * 24 * 60 * 60) {
                     Ok(true)
                 } else {
@@ -388,17 +411,11 @@ impl<'a> MimeFactory<'a> {
 
         let subject = match self.loaded {
             Loaded::Message { ref chat } => {
-                if self.msg.param.get_cmd() == SystemMessage::AutocryptSetupMessage {
-                    return Ok(stock_str::ac_setup_msg_subject(context).await);
-                }
-
                 if !self.msg.subject.is_empty() {
                     return Ok(self.msg.subject.clone());
                 }
 
                 if chat.typ == Chattype::Group && quoted_msg_subject.is_none_or_empty() {
-                    // If we have a `quoted_msg_subject`, we use the subject of the quoted message
-                    // instead of the group name
                     let re = if self.in_reply_to.is_empty() {
                         ""
                     } else {
@@ -407,22 +424,22 @@ impl<'a> MimeFactory<'a> {
                     return Ok(format!("{}{}", re, chat.name));
                 }
 
-                let parent_subject = if quoted_msg_subject.is_none_or_empty() {
-                    chat.param.get(Param::LastSubject)
-                } else {
-                    quoted_msg_subject.as_deref()
-                };
-
-                if let Some(last_subject) = parent_subject {
-                    format!("Re: {}", remove_subject_prefix(last_subject))
-                } else {
-                    let self_name = match context.get_config(Config::Displayname).await? {
-                        Some(name) => name,
-                        None => context.get_config(Config::Addr).await?.unwrap_or_default(),
+                if chat.typ != Chattype::Broadcast {
+                    let parent_subject = if quoted_msg_subject.is_none_or_empty() {
+                        chat.param.get(Param::LastSubject)
+                    } else {
+                        quoted_msg_subject.as_deref()
                     };
-
-                    stock_str::subject_for_new_contact(context, self_name).await
+                    if let Some(last_subject) = parent_subject {
+                        return Ok(format!("Re: {}", remove_subject_prefix(last_subject)));
+                    }
                 }
+
+                let self_name = match context.get_config(Config::Displayname).await? {
+                    Some(name) => name,
+                    None => context.get_config(Config::Addr).await?.unwrap_or_default(),
+                };
+                stock_str::subject_for_new_contact(context, self_name).await
             }
             Loaded::Mdn { .. } => stock_str::read_rcpt(context).await,
         };
@@ -445,20 +462,45 @@ impl<'a> MimeFactory<'a> {
             self.from_addr.clone(),
         );
 
-        let mut to = Vec::new();
-        for (name, addr) in self.recipients.iter() {
-            if name.is_empty() {
-                to.push(Address::new_mailbox(addr.clone()));
-            } else {
-                to.push(Address::new_mailbox_with_name(
-                    name.to_string(),
-                    addr.clone(),
-                ));
-            }
-        }
+        let undisclosed_recipients = match &self.loaded {
+            Loaded::Message { chat } => chat.typ == Chattype::Broadcast,
+            Loaded::Mdn { .. } => false,
+        };
 
-        if to.is_empty() {
-            to.push(from.clone());
+        let mut to = Vec::new();
+        if undisclosed_recipients {
+            to.push(Address::new_group(
+                "hidden-recipients".to_string(),
+                Vec::new(),
+            ));
+        } else {
+            let email_to_remove =
+                if self.msg.param.get_cmd() == SystemMessage::MemberRemovedFromGroup {
+                    self.msg.param.get(Param::Arg)
+                } else {
+                    None
+                };
+
+            for (name, addr) in self.recipients.iter() {
+                if let Some(email_to_remove) = email_to_remove {
+                    if email_to_remove == addr {
+                        continue;
+                    }
+                }
+
+                if name.is_empty() {
+                    to.push(Address::new_mailbox(addr.clone()));
+                } else {
+                    to.push(Address::new_mailbox_with_name(
+                        name.to_string(),
+                        addr.clone(),
+                    ));
+                }
+            }
+
+            if to.is_empty() {
+                to.push(from.clone());
+            }
         }
 
         headers
@@ -562,6 +604,7 @@ impl<'a> MimeFactory<'a> {
         headers
             .unprotected
             .push(Header::new_with_value("To".into(), to).unwrap());
+
         headers
             .unprotected
             .push(Header::new_with_value("From".into(), vec![from]).unwrap());
@@ -593,12 +636,25 @@ impl<'a> MimeFactory<'a> {
             main_part
         } else {
             // Multiple parts, render as multipart.
-            parts.into_iter().fold(
-                PartBuilder::new()
-                    .message_type(MimeMultipartType::Mixed)
-                    .child(main_part.build()),
-                |message, part| message.child(part.build()),
-            )
+            let part_holder = if self.msg.param.get_cmd() == SystemMessage::MultiDeviceSync {
+                PartBuilder::new().header((
+                    "Content-Type".to_string(),
+                    "multipart/report; report-type=multi-device-sync".to_string(),
+                ))
+            } else if self.msg.param.get_cmd() == SystemMessage::WebxdcStatusUpdate {
+                PartBuilder::new().header((
+                    "Content-Type".to_string(),
+                    "multipart/report; report-type=status-update".to_string(),
+                ))
+            } else {
+                PartBuilder::new().message_type(MimeMultipartType::Mixed)
+            };
+
+            parts
+                .into_iter()
+                .fold(part_holder.child(main_part.build()), |message, part| {
+                    message.child(part.build())
+                })
         };
 
         let outer_message = if is_encrypted {
@@ -714,11 +770,12 @@ impl<'a> MimeFactory<'a> {
         } = self;
 
         Ok(RenderedEmail {
-            message: outer_message.build().as_string().into_bytes(),
+            message: outer_message.build().as_string(),
             // envelope: Envelope::new,
             is_encrypted,
             is_gossiped,
             last_added_location_id,
+            sync_ids_to_delete: self.sync_ids_to_delete,
             rfc724_mid,
             subject: subject_str,
         })
@@ -863,7 +920,9 @@ impl<'a> MimeFactory<'a> {
                     "ephemeral-timer-changed".to_string(),
                 ));
             }
-            SystemMessage::LocationOnly => {
+            SystemMessage::LocationOnly
+            | SystemMessage::MultiDeviceSync
+            | SystemMessage::WebxdcStatusUpdate => {
                 // This should prevent automatic replies,
                 // such as non-delivery reports.
                 //
@@ -1084,7 +1143,7 @@ impl<'a> MimeFactory<'a> {
             parts.push(msg_kml_part);
         }
 
-        if location::is_sending_locations_to_chat(context, Some(self.msg.chat_id)).await {
+        if location::is_sending_locations_to_chat(context, Some(self.msg.chat_id)).await? {
             match self.get_location_kml_part(context).await {
                 Ok(part) => parts.push(part),
                 Err(err) => {
@@ -1093,6 +1152,25 @@ impl<'a> MimeFactory<'a> {
             }
         }
 
+        // we do not piggyback sync-files to other self-sent-messages
+        // to not risk files becoming too larger and being skipped by download-on-demand.
+        if command == SystemMessage::MultiDeviceSync && self.is_e2ee_guaranteed() {
+            let json = self.msg.param.get(Param::Arg).unwrap_or_default();
+            let ids = self.msg.param.get(Param::Arg2).unwrap_or_default();
+            parts.push(context.build_sync_part(json.to_string()).await);
+            self.sync_ids_to_delete = Some(ids.to_string());
+        } else if command == SystemMessage::WebxdcStatusUpdate {
+            let json = self.msg.param.get(Param::Arg).unwrap_or_default();
+            parts.push(context.build_status_update_part(json).await);
+        } else if self.msg.viewtype == Viewtype::Webxdc {
+            if let Some(json) = context
+                .render_webxdc_status_update_object(self.msg.id, None)
+                .await?
+            {
+                parts.push(context.build_status_update_part(&json).await);
+            }
+        }
+
         if self.attach_selfavatar {
             match context.get_config(Config::Selfavatar).await? {
                 Some(path) => match build_selfavatar_file(context, &path) {
@@ -1147,7 +1225,11 @@ impl<'a> MimeFactory<'a> {
         {
             stock_str::encrypted_msg(context).await
         } else {
-            self.msg.get_summarytext(context, 32).await
+            self.msg
+                .get_summary(context, None)
+                .await?
+                .truncated_text(32)
+                .to_string()
         };
         let p2 = stock_str::read_rcpt_mail_body(context, p1).await;
         let message_text = format!("{}\r\n", format_flowed(&p2));
@@ -1218,7 +1300,7 @@ async fn build_body_file(
         .param
         .get_blob(Param::File, context, true)
         .await?
-        .ok_or_else(|| format_err!("msg has no filename"))?;
+        .context("msg has no filename")?;
     let suffix = blob.suffix().unwrap_or("dat");
 
     // Get file name to use for sending.  For privacy purposes, we do
@@ -1246,8 +1328,7 @@ async fn build_body_file(
             "video_{}.{}",
             chrono::Utc
                 .timestamp(msg.timestamp_sort, 0)
-                .format("%Y-%m-%d_%H-%M-%S")
-                .to_string(),
+                .format("%Y-%m-%d_%H-%M-%S"),
             &suffix
         ),
         _ => blob.as_file_name().to_string(),
@@ -1358,6 +1439,10 @@ mod tests {
     use async_std::prelude::*;
 
     use crate::chat::ChatId;
+    use crate::chat::{
+        add_contact_to_chat, create_group_chat, remove_contact_from_chat, send_text_msg,
+        ProtectionStatus,
+    };
     use crate::chatlist::Chatlist;
     use crate::contact::Origin;
     use crate::dc_receive_imf::dc_receive_imf;
@@ -1365,7 +1450,7 @@ mod tests {
     use crate::test_utils::{get_chat_msg, TestContext};
 
     use async_std::fs::File;
-    use pretty_assertions::assert_eq;
+    use mailparse::{addrparse_header, MailHeaderMap};
 
     #[test]
     fn test_render_email_address() {
@@ -1463,7 +1548,7 @@ mod tests {
             msg_to_subject_str(
                 b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                 From: Bob <bob@example.com>\n\
-                To: alice@example.com\n\
+                To: alice@example.org\n\
                 Subject: Antw: Chat: hello\n\
                 Message-ID: <2222@example.com>\n\
                 Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
@@ -1478,7 +1563,7 @@ mod tests {
             msg_to_subject_str(
                 b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                 From: Bob <bob@example.com>\n\
-                To: alice@example.com\n\
+                To: alice@example.org\n\
                 Subject: Infos: 42\n\
                 Message-ID: <2222@example.com>\n\
                 Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
@@ -1497,7 +1582,7 @@ mod tests {
             msg_to_subject_str(
                 b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                 From: bob@example.com\n\
-                To: alice@example.com\n\
+                To: alice@example.org\n\
                 Subject: Chat: hello\n\
                 Chat-Version: 1.0\n\
                 Message-ID: <2223@example.com>\n\
@@ -1515,7 +1600,7 @@ mod tests {
         // 3. Send the first message to a new contact
         let t = TestContext::new_alice().await;
 
-        assert_eq!(first_subject_str(t).await, "Message from alice@example.com");
+        assert_eq!(first_subject_str(t).await, "Message from alice@example.org");
 
         let t = TestContext::new_alice().await;
         t.set_config(Config::Displayname, Some("Alice"))
@@ -1530,7 +1615,7 @@ mod tests {
         msg_to_subject_str(
             "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
             From: bob@example.com\n\
-            To: alice@example.com\n\
+            To: alice@example.org\n\
             Subject: äääää\n\
             Chat-Version: 1.0\n\
             Message-ID: <2893@example.com>\n\
@@ -1544,7 +1629,7 @@ mod tests {
         msg_to_subject_str(
             "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
             From: bob@example.com\n\
-            To: alice@example.com\n\
+            To: alice@example.org\n\
             Subject: aäääää\n\
             Chat-Version: 1.0\n\
             Message-ID: <2893@example.com>\n\
@@ -1563,7 +1648,7 @@ mod tests {
         dc_receive_imf(
             &t,
             b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
-            From: alice@example.com\n\
+            From: alice@example.org\n\
             To: bob@example.com\n\
             Subject: Hello, Bob\n\
             Chat-Version: 1.0\n\
@@ -1572,7 +1657,6 @@ mod tests {
             \n\
             hello\n",
             "INBOX",
-            1,
             false,
         )
         .await
@@ -1580,7 +1664,7 @@ mod tests {
         let new_msg = incoming_msg_to_reply_msg(
             b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                  From: bob@example.com\n\
-                 To: alice@example.com\n\
+                 To: alice@example.org\n\
                  Subject: message opened\n\
                  Date: Sun, 22 Mar 2020 23:37:57 +0000\n\
                  Chat-Version: 1.0\n\
@@ -1609,27 +1693,30 @@ mod tests {
     }
 
     #[async_std::test]
-    async fn test_subject_in_group() {
+    async fn test_subject_in_group() -> Result<()> {
         async fn send_msg_get_subject(
             t: &TestContext,
             group_id: ChatId,
             quote: Option<&Message>,
-        ) -> String {
+        ) -> Result<String> {
             let mut new_msg = Message::new(Viewtype::Text);
             new_msg.set_text(Some("Hi".to_string()));
             if let Some(q) = quote {
-                new_msg.set_quote(t, q).await.unwrap();
+                new_msg.set_quote(t, Some(q)).await?;
             }
             let sent = t.send_msg(group_id, &mut new_msg).await;
             get_subject(t, sent).await
         }
-        async fn get_subject(t: &TestContext, sent: crate::test_utils::SentMessage) -> String {
+        async fn get_subject(
+            t: &TestContext,
+            sent: crate::test_utils::SentMessage,
+        ) -> Result<String> {
             let parsed_subject = t.parse_msg(&sent).await.get_subject().unwrap();
 
-            let sent_msg = Message::load_from_db(t, sent.sender_msg_id).await.unwrap();
+            let sent_msg = Message::load_from_db(t, sent.sender_msg_id).await?;
             assert_eq!(parsed_subject, sent_msg.subject);
 
-            parsed_subject
+            Ok(parsed_subject)
         }
 
         // 6. Test that in a group, replies also take the quoted message's subject, while non-replies use the group title as subject
@@ -1638,13 +1725,13 @@ mod tests {
             chat::create_group_chat(&t, chat::ProtectionStatus::Unprotected, "groupname") // TODO encodings, ä
                 .await
                 .unwrap();
-        let bob = Contact::create(&t, "", "bob@example.org").await.unwrap();
-        chat::add_contact_to_chat(&t, group_id, bob).await;
+        let bob = Contact::create(&t, "", "bob@example.org").await?;
+        chat::add_contact_to_chat(&t, group_id, bob).await?;
 
-        let subject = send_msg_get_subject(&t, group_id, None).await;
+        let subject = send_msg_get_subject(&t, group_id, None).await?;
         assert_eq!(subject, "groupname");
 
-        let subject = send_msg_get_subject(&t, group_id, None).await;
+        let subject = send_msg_get_subject(&t, group_id, None).await?;
         assert_eq!(subject, "Re: groupname");
 
         dc_receive_imf(
@@ -1652,7 +1739,7 @@ mod tests {
             format!(
                 "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                 From: bob@example.com\n\
-                To: alice@example.com\n\
+                To: alice@example.org\n\
                 Subject: Different subject\n\
                 In-Reply-To: {}\n\
                 Message-ID: <2893@example.com>\n\
@@ -1663,31 +1750,28 @@ mod tests {
             )
             .as_bytes(),
             "INBOX",
-            5,
             false,
         )
-        .await
-        .unwrap();
+        .await?;
         let message_from_bob = t.get_last_msg().await;
 
-        let subject = send_msg_get_subject(&t, group_id, None).await;
+        let subject = send_msg_get_subject(&t, group_id, None).await?;
         assert_eq!(subject, "Re: groupname");
 
-        let subject = send_msg_get_subject(&t, group_id, Some(&message_from_bob)).await;
+        let subject = send_msg_get_subject(&t, group_id, Some(&message_from_bob)).await?;
         let outgoing_quoting_msg = t.get_last_msg().await;
         assert_eq!(subject, "Re: Different subject");
 
-        let subject = send_msg_get_subject(&t, group_id, None).await;
+        let subject = send_msg_get_subject(&t, group_id, None).await?;
         assert_eq!(subject, "Re: groupname");
 
-        let subject = send_msg_get_subject(&t, group_id, Some(&outgoing_quoting_msg)).await;
+        let subject = send_msg_get_subject(&t, group_id, Some(&outgoing_quoting_msg)).await?;
         assert_eq!(subject, "Re: Different subject");
 
-        chat::forward_msgs(&t, &[message_from_bob.id], group_id)
-            .await
-            .unwrap();
-        let subject = get_subject(&t, t.pop_sent_msg().await).await;
-        assert_eq!(subject, "Fwd: Different subject");
+        chat::forward_msgs(&t, &[message_from_bob.id], group_id).await?;
+        let subject = get_subject(&t, t.pop_sent_msg().await).await?;
+        assert_eq!(subject, "Re: groupname");
+        Ok(())
     }
 
     async fn first_subject_str(t: TestContext) -> String {
@@ -1709,7 +1793,7 @@ mod tests {
         mf.subject_str(&t).await.unwrap()
     }
 
-    // In `imf_raw`, From has to be bob@example.com, To has to be alice@example.com
+    // In `imf_raw`, From has to be bob@example.com, To has to be alice@example.org
     async fn msg_to_subject_str(imf_raw: &[u8]) -> String {
         let subject_str = msg_to_subject_str_inner(imf_raw, false, false, false).await;
 
@@ -1770,14 +1854,13 @@ mod tests {
                 &t,
                 b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                     From: Bob <bob@example.com>\n\
-                    To: alice@example.com\n\
+                    To: alice@example.org\n\
                     Subject: Some other, completely unrelated subject\n\
                     Message-ID: <3cl4@example.com>\n\
                     Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                     \n\
                     Some other, completely unrelated content\n",
                 "INBOX",
-                2,
                 false,
             )
             .await
@@ -1788,7 +1871,7 @@ mod tests {
         }
 
         if reply {
-            new_msg.set_quote(&t, &incoming_msg).await.unwrap();
+            new_msg.set_quote(&t, Some(&incoming_msg)).await.unwrap();
         }
 
         let mf = MimeFactory::from_msg(&t, &new_msg, false).await.unwrap();
@@ -1802,13 +1885,13 @@ mod tests {
             .await
             .unwrap();
 
-        dc_receive_imf(context, imf_raw, "INBOX", 1, false)
+        dc_receive_imf(context, imf_raw, "INBOX", false)
             .await
             .unwrap();
 
         let chats = Chatlist::try_load(context, 0, None, None).await.unwrap();
 
-        let chat_id = chats.get_chat_id(0);
+        let chat_id = chats.get_chat_id(0).unwrap();
         chat_id.accept(context).await.unwrap();
 
         let mut new_msg = Message::new(Viewtype::Text);
@@ -1830,7 +1913,7 @@ mod tests {
         let msg = incoming_msg_to_reply_msg(
             b"Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
                 From: Charlie <charlie@example.com>\n\
-                To: alice@example.com\n\
+                To: alice@example.org\n\
                 Subject: Chat: hello\n\
                 Chat-Version: 1.0\n\
                 Message-ID: <2223@example.com>\n\
@@ -1848,7 +1931,7 @@ mod tests {
 
         let rendered_msg = mimefactory.render(context).await.unwrap();
 
-        let mail = mailparse::parse_mail(&rendered_msg.message).unwrap();
+        let mail = mailparse::parse_mail(rendered_msg.message.as_bytes()).unwrap();
         assert_eq!(
             mail.headers
                 .iter()
@@ -1858,7 +1941,7 @@ mod tests {
             "1.0"
         );
 
-        let _mime_msg = MimeMessage::from_bytes(context, &rendered_msg.message)
+        let _mime_msg = MimeMessage::from_bytes(context, rendered_msg.message.as_bytes())
             .await
             .unwrap();
     }
@@ -1932,8 +2015,9 @@ mod tests {
         let mut msg = Message::new(Viewtype::Text);
         msg.set_text(Some("this is the text!".to_string()));
 
-        let payload = t.send_msg(chat.id, &mut msg).await.payload();
-        let mut payload = payload.splitn(3, "\r\n\r\n");
+        let sent_msg = t.send_msg(chat.id, &mut msg).await;
+        let mut payload = sent_msg.payload().splitn(3, "\r\n\r\n");
+
         let outer = payload.next().unwrap();
         let inner = payload.next().unwrap();
         let body = payload.next().unwrap();
@@ -1951,8 +2035,8 @@ mod tests {
 
         // if another message is sent, that one must not contain the avatar
         // and no artificial multipart/mixed nesting
-        let payload = t.send_msg(chat.id, &mut msg).await.payload();
-        let mut payload = payload.splitn(2, "\r\n\r\n");
+        let sent_msg = t.send_msg(chat.id, &mut msg).await;
+        let mut payload = sent_msg.payload().splitn(2, "\r\n\r\n");
         let outer = payload.next().unwrap();
         let body = payload.next().unwrap();
 
@@ -1969,4 +2053,35 @@ mod tests {
 
         Ok(())
     }
+
+    /// Test that removed member address does not go into the `To:` field.
+    #[async_std::test]
+    async fn test_remove_member_bcc() -> Result<()> {
+        // Alice creates a group with Bob and Claire and then removes Bob.
+        let alice = TestContext::new_alice().await;
+
+        let bob_id = Contact::create(&alice, "Bob", "bob@example.net").await?;
+        let claire_id = Contact::create(&alice, "Claire", "claire@foo.de").await?;
+
+        let alice_chat_id = create_group_chat(&alice, ProtectionStatus::Unprotected, "foo").await?;
+        add_contact_to_chat(&alice, alice_chat_id, bob_id).await?;
+        add_contact_to_chat(&alice, alice_chat_id, claire_id).await?;
+        send_text_msg(&alice, alice_chat_id, "Creating a group".to_string()).await?;
+
+        remove_contact_from_chat(&alice, alice_chat_id, claire_id).await?;
+        let remove = alice.pop_sent_msg().await;
+        let remove_payload = remove.payload();
+        let parsed = mailparse::parse_mail(remove_payload.as_bytes())?;
+        let to = parsed
+            .headers
+            .get_first_header("To")
+            .context("no To: header parsed")?;
+        let to = addrparse_header(to)?;
+        let mailbox = to
+            .extract_single_info()
+            .context("to: field does not contain exactly one address")?;
+        assert_eq!(mailbox.addr, "bob@example.net");
+
+        Ok(())
+    }
 }

src/mimeparser.rs

@@ -15,7 +15,7 @@ use crate::blob::BlobObject;
 use crate::constants::{Viewtype, DC_DESIRED_TEXT_LEN, DC_ELLIPSIS};
 use crate::contact::addr_normalize;
 use crate::context::Context;
-use crate::dc_tools::{dc_get_filemeta, dc_truncate};
+use crate::dc_tools::{dc_get_filemeta, dc_truncate, parse_receive_headers};
 use crate::dehtml::dehtml;
 use crate::e2ee;
 use crate::events::EventType;
@@ -28,6 +28,7 @@ use crate::param::{Param, Params};
 use crate::peerstate::Peerstate;
 use crate::simplify::simplify;
 use crate::stock_str;
+use crate::sync::SyncItems;
 
 /// A parsed MIME message.
 ///
@@ -46,6 +47,7 @@ pub struct MimeMessage {
     /// Addresses are normalized and lowercased:
     pub recipients: Vec<SingleInfo>,
     pub from: Vec<SingleInfo>,
+    pub list_post: Option<String>,
     pub chat_disposition_notification_to: Option<SingleInfo>,
     pub decrypting_failed: bool,
 
@@ -56,11 +58,15 @@ pub struct MimeMessage {
     /// this set is empty.
     pub signatures: HashSet<Fingerprint>,
 
-    pub gossipped_addr: HashSet<String>,
+    /// The set of mail recipient addresses for which gossip headers were applied, regardless of
+    /// whether they modified any peerstates.
+    pub gossiped_addr: HashSet<String>,
     pub is_forwarded: bool,
     pub is_system_message: SystemMessage,
     pub location_kml: Option<location::Kml>,
     pub message_kml: Option<location::Kml>,
+    pub(crate) sync_items: Option<SyncItems>,
+    pub(crate) webxdc_status_update: Option<String>,
     pub(crate) user_avatar: Option<AvatarAction>,
     pub(crate) group_avatar: Option<AvatarAction>,
     pub(crate) mdn_reports: Vec<Report>,
@@ -78,6 +84,8 @@ pub struct MimeMessage {
     /// This is non-empty only if the message was actually encrypted.  It is used
     /// for e.g. late-parsing HTML.
     pub decoded_data: Vec<u8>,
+
+    pub(crate) hop_info: String,
 }
 
 #[derive(Debug, PartialEq)]
@@ -124,6 +132,14 @@ pub enum SystemMessage {
     // Chat protection state changed
     ChatProtectionEnabled = 11,
     ChatProtectionDisabled = 12,
+
+    /// Self-sent-message that contains only json used for multi-device-sync;
+    /// if possible, we attach that to other messages as for locations.
+    MultiDeviceSync = 20,
+
+    // Sync message that contains a json payload
+    // sent to the other webxdc instances
+    WebxdcStatusUpdate = 30,
 }
 
 impl Default for SystemMessage {
@@ -136,6 +152,18 @@ const MIME_AC_SETUP_FILE: &str = "application/autocrypt-setup";
 
 impl MimeMessage {
     pub async fn from_bytes(context: &Context, body: &[u8]) -> Result<Self> {
+        MimeMessage::from_bytes_with_partial(context, body, None).await
+    }
+
+    /// Parse a mime message.
+    ///
+    /// If `partial` is set, it contains the full message size in bytes
+    /// and `body` contains the header only.
+    pub async fn from_bytes_with_partial(
+        context: &Context,
+        body: &[u8],
+        partial: Option<u32>,
+    ) -> Result<Self> {
         let mail = mailparse::parse_mail(body)?;
 
         let message_time = mail
@@ -143,10 +171,12 @@ impl MimeMessage {
             .get_header_value(HeaderDef::Date)
             .and_then(|v| mailparse::dateparse(&v).ok())
             .unwrap_or_default();
+        let hop_info = parse_receive_headers(&mail.get_headers());
 
         let mut headers = Default::default();
         let mut recipients = Default::default();
         let mut from = Default::default();
+        let mut list_post = Default::default();
         let mut chat_disposition_notification_to = None;
 
         // Parse IMF headers.
@@ -155,6 +185,7 @@ impl MimeMessage {
             &mut headers,
             &mut recipients,
             &mut from,
+            &mut list_post,
             &mut chat_disposition_notification_to,
             &mail.headers,
         );
@@ -180,7 +211,7 @@ impl MimeMessage {
 
         // Memory location for a possible decrypted message.
         let mut mail_raw = Vec::new();
-        let mut gossipped_addr = Default::default();
+        let mut gossiped_addr = Default::default();
 
         let (mail, signatures, warn_empty_signature) =
             match e2ee::try_decrypt(context, &mail, message_time).await {
@@ -203,7 +234,7 @@ impl MimeMessage {
                         if !signatures.is_empty() {
                             let gossip_headers =
                                 decrypted_mail.headers.get_all_values("Autocrypt-Gossip");
-                            gossipped_addr = update_gossip_peerstates(
+                            gossiped_addr = update_gossip_peerstates(
                                 context,
                                 message_time,
                                 &mail,
@@ -228,6 +259,7 @@ impl MimeMessage {
                             &mut headers,
                             &mut recipients,
                             &mut throwaway_from,
+                            &mut list_post,
                             &mut chat_disposition_notification_to,
                             &decrypted_mail.headers,
                         );
@@ -255,26 +287,41 @@ impl MimeMessage {
             parts: Vec::new(),
             header: headers,
             recipients,
+            list_post,
             from,
             chat_disposition_notification_to,
             decrypting_failed: false,
 
             // only non-empty if it was a valid autocrypt message
             signatures,
-            gossipped_addr,
+            gossiped_addr,
             is_forwarded: false,
             mdn_reports: Vec::new(),
             is_system_message: SystemMessage::Unknown,
             location_kml: None,
             message_kml: None,
+            sync_items: None,
+            webxdc_status_update: None,
             user_avatar: None,
             group_avatar: None,
             failure_report: None,
             footer: None,
             is_mime_modified: false,
             decoded_data: Vec::new(),
+            hop_info,
         };
-        parser.parse_mime_recursive(context, &mail, false).await?;
+
+        match partial {
+            Some(org_bytes) => {
+                parser
+                    .create_stub_from_partial_download(context, org_bytes)
+                    .await?;
+            }
+            None => {
+                parser.parse_mime_recursive(context, &mail, false).await?;
+            }
+        };
+
         parser.maybe_remove_bad_parts();
         parser.maybe_remove_inline_mailinglist_footer();
         parser.heuristically_parse_ndn(context).await;
@@ -356,16 +403,18 @@ impl MimeMessage {
     #[allow(clippy::indexing_slicing)]
     fn squash_attachment_parts(&mut self) {
         if let [textpart, filepart] = &self.parts[..] {
-            let need_drop = {
-                textpart.typ == Viewtype::Text
-                    && (filepart.typ == Viewtype::Image
-                        || filepart.typ == Viewtype::Gif
-                        || filepart.typ == Viewtype::Sticker
-                        || filepart.typ == Viewtype::Audio
-                        || filepart.typ == Viewtype::Voice
-                        || filepart.typ == Viewtype::Video
-                        || filepart.typ == Viewtype::File)
-            };
+            let need_drop = textpart.typ == Viewtype::Text
+                && match filepart.typ {
+                    Viewtype::Image
+                    | Viewtype::Gif
+                    | Viewtype::Sticker
+                    | Viewtype::Audio
+                    | Viewtype::Voice
+                    | Viewtype::Video
+                    | Viewtype::File
+                    | Viewtype::Webxdc => true,
+                    Viewtype::Unknown | Viewtype::Text | Viewtype::VideochatInvitation => false,
+                };
 
             if need_drop {
                 let mut filepart = self.parts.swap_remove(1);
@@ -497,7 +546,7 @@ impl MimeMessage {
             };
 
             if let Some(ref subject) = self.get_subject() {
-                if !self.has_chat_version() {
+                if !self.has_chat_version() && self.webxdc_status_update.is_none() {
                     part.msg = subject.to_string();
                 }
             }
@@ -790,6 +839,18 @@ impl MimeMessage {
                                 }
                             }
                         }
+                        Some("multi-device-sync") => {
+                            if let Some(second) = mail.subparts.get(1) {
+                                self.add_single_part_if_known(context, second, is_related)
+                                    .await?;
+                            }
+                        }
+                        Some("status-update") => {
+                            if let Some(second) = mail.subparts.get(1) {
+                                self.add_single_part_if_known(context, second, is_related)
+                                    .await?;
+                            }
+                        }
                         Some(_) => {
                             if let Some(first) = mail.subparts.get(0) {
                                 any_part_added = self
@@ -959,8 +1020,13 @@ impl MimeMessage {
         if decoded_data.is_empty() {
             return;
         }
-        // treat location/message kml file attachments specially
-        if filename.ends_with(".kml") {
+        let msg_type = if context
+            .is_webxdc_file(filename, decoded_data)
+            .await
+            .unwrap_or(false)
+        {
+            Viewtype::Webxdc
+        } else if filename.ends_with(".kml") {
             // XXX what if somebody sends eg an "location-highlights.kml"
             // attachment unrelated to location streaming?
             if filename.starts_with("location") || filename.starts_with("message") {
@@ -976,7 +1042,29 @@ impl MimeMessage {
                 }
                 return;
             }
-        }
+            msg_type
+        } else if filename == "multi-device-sync.json" {
+            let serialized = String::from_utf8_lossy(decoded_data)
+                .parse()
+                .unwrap_or_default();
+            self.sync_items = context
+                .parse_sync_items(serialized)
+                .await
+                .map_err(|err| {
+                    warn!(context, "failed to parse sync data: {}", err);
+                })
+                .ok();
+            return;
+        } else if filename == "status-update.json" {
+            let serialized = String::from_utf8_lossy(decoded_data)
+                .parse()
+                .unwrap_or_default();
+            self.webxdc_status_update = Some(serialized);
+            return;
+        } else {
+            msg_type
+        };
+
         /* we have a regular file attachment,
         write decoded data to new blob object */
 
@@ -1041,11 +1129,11 @@ impl MimeMessage {
         }
     }
 
-    pub fn repl_msg_by_error(&mut self, error_msg: impl AsRef<str>) {
+    pub fn repl_msg_by_error(&mut self, error_msg: &str) {
         self.is_system_message = SystemMessage::Unknown;
         if let Some(part) = self.parts.first_mut() {
             part.typ = Viewtype::Text;
-            part.msg = format!("[{}]", error_msg.as_ref());
+            part.msg = format!("[{}]", error_msg);
             self.parts.truncate(1);
         }
     }
@@ -1061,6 +1149,7 @@ impl MimeMessage {
         headers: &mut HashMap<String, String>,
         recipients: &mut Vec<SingleInfo>,
         from: &mut Vec<SingleInfo>,
+        list_post: &mut Option<String>,
         chat_disposition_notification_to: &mut Option<SingleInfo>,
         fields: &[mailparse::MailHeader<'_>],
     ) {
@@ -1091,6 +1180,10 @@ impl MimeMessage {
         if !from_new.is_empty() {
             *from = from_new;
         }
+        let list_post_new = get_list_post(fields);
+        if list_post_new.is_some() {
+            *list_post = list_post_new;
+        }
     }
 
     fn process_report(
@@ -1108,23 +1201,21 @@ impl MimeMessage {
 
         // must be present
         if let Some(_disposition) = report_fields.get_header_value(HeaderDef::Disposition) {
-            if let Some(original_message_id) = report_fields
+            let original_message_id = report_fields
                 .get_header_value(HeaderDef::OriginalMessageId)
-                .and_then(|v| parse_message_id(&v).ok())
-            {
-                let additional_message_ids = report_fields
-                    .get_header_value(HeaderDef::AdditionalMessageIds)
-                    .map_or_else(Vec::new, |v| {
-                        v.split(' ')
-                            .filter_map(|s| parse_message_id(s).ok())
-                            .collect()
-                    });
+                .and_then(|v| parse_message_id(&v).ok());
+            let additional_message_ids = report_fields
+                .get_header_value(HeaderDef::AdditionalMessageIds)
+                .map_or_else(Vec::new, |v| {
+                    v.split(' ')
+                        .filter_map(|s| parse_message_id(s).ok())
+                        .collect()
+                });
 
-                return Ok(Some(Report {
-                    original_message_id,
-                    additional_message_ids,
-                }));
-            }
+            return Ok(Some(Report {
+                original_message_id,
+                additional_message_ids,
+            }));
         }
         warn!(
             context,
@@ -1141,11 +1232,11 @@ impl MimeMessage {
         report: &mailparse::ParsedMail<'_>,
     ) -> Result<Option<FailureReport>> {
         // parse as mailheaders
-        if let Some(original_msg) = report
-            .subparts
-            .iter()
-            .find(|p| p.ctype.mimetype.contains("rfc822") || p.ctype.mimetype == "message/global")
-        {
+        if let Some(original_msg) = report.subparts.iter().find(|p| {
+            p.ctype.mimetype.contains("rfc822")
+                || p.ctype.mimetype == "message/global"
+                || p.ctype.mimetype == "message/global-headers"
+        }) {
             let report_body = original_msg.get_body_raw()?;
             let (report_fields, _) = mailparse::parse_headers(&report_body)?;
 
@@ -1280,8 +1371,10 @@ impl MimeMessage {
         parts: &[Part],
     ) {
         for report in &self.mdn_reports {
-            for original_message_id in
-                std::iter::once(&report.original_message_id).chain(&report.additional_message_ids)
+            for original_message_id in report
+                .original_message_id
+                .iter()
+                .chain(&report.additional_message_ids)
             {
                 match message::handle_mdn(context, from_id, original_message_id, sent_timestamp)
                     .await
@@ -1331,6 +1424,9 @@ impl MimeMessage {
     }
 }
 
+/// Parses `Autocrypt-Gossip` headers from the email and applies them to peerstates.
+///
+/// Returns the set of mail recipient addresses for which valid gossip headers were found.
 async fn update_gossip_peerstates(
     context: &Context,
     message_time: i64,
@@ -1338,48 +1434,55 @@ async fn update_gossip_peerstates(
     gossip_headers: Vec<String>,
 ) -> Result<HashSet<String>> {
     // XXX split the parsing from the modification part
-    let mut gossipped_addr: HashSet<String> = Default::default();
+    let mut gossiped_addr: HashSet<String> = Default::default();
 
     for value in &gossip_headers {
-        let gossip_header = value.parse::<Aheader>();
-
-        if let Ok(ref header) = gossip_header {
-            if get_recipients(&mail.headers)
-                .iter()
-                .any(|info| info.addr == header.addr.to_lowercase())
-            {
-                let mut peerstate = Peerstate::from_addr(context, &header.addr).await?;
-                if let Some(ref mut peerstate) = peerstate {
-                    peerstate.apply_gossip(header, message_time);
-                    peerstate.save_to_db(&context.sql, false).await?;
-                } else {
-                    let p = Peerstate::from_gossip(header, message_time);
-                    p.save_to_db(&context.sql, true).await?;
-                    peerstate = Some(p);
-                }
-                if let Some(peerstate) = peerstate {
-                    peerstate
-                        .handle_fingerprint_change(context, message_time)
-                        .await?;
-                }
-
-                gossipped_addr.insert(header.addr.clone());
-            } else {
-                warn!(
-                    context,
-                    "Ignoring gossipped \"{}\" as the address is not in To/Cc list.", &header.addr,
-                );
+        let header = match value.parse::<Aheader>() {
+            Ok(header) => header,
+            Err(err) => {
+                warn!(context, "Failed parsing Autocrypt-Gossip header: {}", err);
+                continue;
             }
+        };
+
+        if !get_recipients(&mail.headers)
+            .iter()
+            .any(|info| info.addr == header.addr.to_lowercase())
+        {
+            warn!(
+                context,
+                "Ignoring gossiped \"{}\" as the address is not in To/Cc list.", &header.addr,
+            );
+            continue;
         }
+
+        let peerstate;
+        if let Some(mut p) = Peerstate::from_addr(context, &header.addr).await? {
+            p.apply_gossip(&header, message_time);
+            p.save_to_db(&context.sql, false).await?;
+            peerstate = p;
+        } else {
+            let p = Peerstate::from_gossip(&header, message_time);
+            p.save_to_db(&context.sql, true).await?;
+            peerstate = p;
+        };
+        peerstate
+            .handle_fingerprint_change(context, message_time)
+            .await?;
+
+        gossiped_addr.insert(header.addr.clone());
     }
 
-    Ok(gossipped_addr)
+    Ok(gossiped_addr)
 }
 
 #[derive(Debug)]
 pub(crate) struct Report {
     /// Original-Message-ID header
-    original_message_id: String,
+    ///
+    /// It MUST be present if the original message has a Message-ID according to RFC 8098, but MS
+    /// Exchange does not add it nevertheless, in which case it is `None`.
+    original_message_id: Option<String>,
     /// Additional-Message-IDs
     additional_message_ids: Vec<String>,
 }
@@ -1443,9 +1546,9 @@ pub struct Part {
     pub msg_raw: Option<String>,
     pub bytes: usize,
     pub param: Params,
-    org_filename: Option<String>,
+    pub(crate) org_filename: Option<String>,
     pub error: Option<String>,
-    dehtml_failed: bool,
+    pub(crate) dehtml_failed: bool,
 
     /// the part is a child or a descendant of multipart/related.
     /// typically, these are images that are referenced from text/html part
@@ -1453,7 +1556,7 @@ pub struct Part {
     ///
     /// note that multipart/related may contain further multipart nestings
     /// and all of them needs to be marked with `is_related`.
-    is_related: bool,
+    pub(crate) is_related: bool,
 }
 
 /// return mimetype and viewtype for a parsed mail
@@ -1569,6 +1672,14 @@ pub(crate) fn get_from(headers: &[MailHeader]) -> Vec<SingleInfo> {
     get_all_addresses_from_header(headers, |header_key| header_key == "from")
 }
 
+/// Returned addresses are normalized and lowercased.
+pub(crate) fn get_list_post(headers: &[MailHeader]) -> Option<String> {
+    get_all_addresses_from_header(headers, |header_key| header_key == "list-post")
+        .into_iter()
+        .next()
+        .map(|s| s.addr)
+}
+
 fn get_all_addresses_from_header<F>(headers: &[MailHeader], pred: F) -> Vec<SingleInfo>
 where
     F: Fn(String) -> bool,
@@ -2288,7 +2399,7 @@ Additional-Message-IDs: <foo@example.com> <foo@example.net>\n\
         assert_eq!(message.mdn_reports.len(), 1);
         assert_eq!(
             message.mdn_reports[0].original_message_id,
-            "foo@example.org"
+            Some("foo@example.org".to_string())
         );
         assert_eq!(
             &message.mdn_reports[0].additional_message_ids,
@@ -2790,7 +2901,6 @@ On 2020-10-25, Bob wrote:
             &t.ctx,
             include_bytes!("../test-data/message/subj_with_multimedia_msg.eml"),
             "INBOX",
-            1,
             false,
         )
         .await
@@ -2939,7 +3049,7 @@ Subject: ...
 
 Some quote.
 "###;
-        dc_receive_imf(&t, raw, "INBOX", 1, false).await?;
+        dc_receive_imf(&t, raw, "INBOX", false).await?;
 
         // Delta Chat generates In-Reply-To with a starting tab when Message-ID is too long.
         let raw = br###"In-Reply-To:
@@ -2956,7 +3066,7 @@ Subject: ...
 Some reply
 "###;
 
-        dc_receive_imf(&t, raw, "INBOX", 2, false).await?;
+        dc_receive_imf(&t, raw, "INBOX", false).await?;
 
         let msg = t.get_last_msg().await;
         assert_eq!(msg.get_text().unwrap(), "Some reply");
@@ -2976,25 +3086,107 @@ Some reply
 Chat-Version: 1.0\n\
 Message-ID: <foobarbaz@example.org>
 To: Bob <bob@example.org>
-From: Alice <alice@example.com>
+From: Alice <alice@example.org>
 Subject: subject
-Chat-Disposition-Notification-To: alice@example.com
+Chat-Disposition-Notification-To: alice@example.org
 
 Message.
 "###;
 
         // Bob receives message.
-        dc_receive_imf(&bob, raw, "INBOX", 1, false).await?;
+        dc_receive_imf(&bob, raw, "INBOX", false).await?;
         let msg = bob.get_last_msg().await;
         // Message is incoming.
         assert!(msg.param.get_bool(Param::WantsMdn).unwrap());
 
         // Alice receives copy-to-self.
-        dc_receive_imf(&alice, raw, "INBOX", 1, false).await?;
+        dc_receive_imf(&alice, raw, "INBOX", false).await?;
         let msg = alice.get_last_msg().await;
         // Message is outgoing, don't send read receipt to self.
         assert!(msg.param.get_bool(Param::WantsMdn).is_none());
 
         Ok(())
     }
+
+    #[async_std::test]
+    async fn test_ignore_read_receipt_to_self() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+
+        // Alice receives BCC-self copy of a message sent to Bob.
+        dc_receive_imf(
+            &alice,
+            "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
+                 From: alice@example.org\n\
+                 To: bob@example.net\n\
+                 Subject: foo\n\
+                 Message-ID: first@example.com\n\
+                 Chat-Version: 1.0\n\
+                 Chat-Disposition-Notification-To: alice@example.org\n\
+                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
+                 \n\
+                 hello\n"
+                .as_bytes(),
+            "INBOX",
+            false,
+        )
+        .await?;
+        let msg = alice.get_last_msg().await;
+        assert_eq!(msg.state, MessageState::OutDelivered);
+
+        // Due to a bug in the old version running on the other device, Alice receives a read
+        // receipt from self.
+        dc_receive_imf(
+            &alice,
+                "Received: (Postfix, from userid 1000); Mon, 4 Dec 2006 14:51:39 +0100 (CET)\n\
+                 From: alice@example.org\n\
+                 To: alice@example.org\n\
+                 Subject: message opened\n\
+                 Date: Sun, 22 Mar 2020 23:37:57 +0000\n\
+                 Chat-Version: 1.0\n\
+                 Message-ID: second@example.com\n\
+                 Content-Type: multipart/report; report-type=disposition-notification; boundary=\"SNIPP\"\n\
+                 \n\
+                 \n\
+                 --SNIPP\n\
+                 Content-Type: text/plain; charset=utf-8\n\
+                 \n\
+                 Read receipts do not guarantee sth. was read.\n\
+                 \n\
+                 \n\
+                 --SNIPP\n\
+                 Content-Type: message/disposition-notification\n\
+                 \n\
+                 Original-Recipient: rfc822;bob@example.com\n\
+                 Final-Recipient: rfc822;bob@example.com\n\
+                 Original-Message-ID: <first@example.com>\n\
+                 Disposition: manual-action/MDN-sent-automatically; displayed\n\
+                 \n\
+                 \n\
+                 --SNIPP--"
+            .as_bytes(),
+            "INBOX",
+            false,
+        )
+        .await?;
+
+        // Check that the state has not changed to `MessageState::OutMdnRcvd`.
+        let msg = Message::load_from_db(&alice, msg.id).await?;
+        assert_eq!(msg.state, MessageState::OutDelivered);
+
+        Ok(())
+    }
+
+    /// Test parsing of MDN sent by MS Exchange.
+    ///
+    /// It does not have required Original-Message-ID field, so it is useless, but we want to
+    /// recognize it as MDN nevertheless to avoid displaying it in the chat as normal message.
+    #[async_std::test]
+    async fn test_ms_exchange_mdn() -> Result<()> {
+        let t = TestContext::new_alice().await;
+        let raw =
+            include_bytes!("../test-data/message/ms_exchange_report_disposition_notification.eml");
+        let mimeparser = MimeMessage::from_bytes(&t.ctx, raw).await?;
+        assert!(!mimeparser.mdn_reports.is_empty());
+        Ok(())
+    }
 }

src/oauth2.rs

@@ -41,6 +41,7 @@ struct Oauth2 {
 
 /// OAuth 2 Access Token Response
 #[derive(Debug, Deserialize)]
+#[allow(dead_code)]
 struct Response {
     // Should always be there according to: <https://www.oauth.com/oauth2-servers/access-tokens/access-token-response/>
     // but previous code handled its abscense.
@@ -58,7 +59,7 @@ pub async fn dc_get_oauth2_url(
     redirect_uri: &str,
 ) -> Result<Option<String>> {
     let socks5_enabled = context.get_config_bool(Config::Socks5Enabled).await?;
-    if let Some(oauth2) = Oauth2::from_address(addr, socks5_enabled).await {
+    if let Some(oauth2) = Oauth2::from_address(context, addr, socks5_enabled).await {
         context
             .sql
             .set_raw_config("oauth2_pending_redirect_uri", Some(redirect_uri))
@@ -79,7 +80,7 @@ pub async fn dc_get_oauth2_access_token(
     regenerate: bool,
 ) -> Result<Option<String>> {
     let socks5_enabled = context.get_config_bool(Config::Socks5Enabled).await?;
-    if let Some(oauth2) = Oauth2::from_address(addr, socks5_enabled).await {
+    if let Some(oauth2) = Oauth2::from_address(context, addr, socks5_enabled).await {
         let lock = context.oauth2_mutex.lock().await;
 
         // read generated token
@@ -225,7 +226,7 @@ pub async fn dc_get_oauth2_addr(
     code: &str,
 ) -> Result<Option<String>> {
     let socks5_enabled = context.get_config_bool(Config::Socks5Enabled).await?;
-    let oauth2 = match Oauth2::from_address(addr, socks5_enabled).await {
+    let oauth2 = match Oauth2::from_address(context, addr, socks5_enabled).await {
         Some(o) => o,
         None => return Ok(None),
     };
@@ -253,13 +254,13 @@ pub async fn dc_get_oauth2_addr(
 }
 
 impl Oauth2 {
-    async fn from_address(addr: &str, skip_mx: bool) -> Option<Self> {
+    async fn from_address(context: &Context, addr: &str, skip_mx: bool) -> Option<Self> {
         let addr_normalized = normalize_addr(addr);
         if let Some(domain) = addr_normalized
             .find('@')
             .map(|index| addr_normalized.split_at(index + 1).1)
         {
-            if let Some(oauth2_authorizer) = provider::get_provider_info(domain, skip_mx)
+            if let Some(oauth2_authorizer) = provider::get_provider_info(context, domain, skip_mx)
                 .await
                 .and_then(|provider| provider.oauth2_authorizer.as_ref())
             {
@@ -356,32 +357,39 @@ mod tests {
 
     #[async_std::test]
     async fn test_oauth_from_address() {
+        let t = TestContext::new().await;
         assert_eq!(
-            Oauth2::from_address("hello@gmail.com", false).await,
+            Oauth2::from_address(&t, "hello@gmail.com", false).await,
             Some(OAUTH2_GMAIL)
         );
         assert_eq!(
-            Oauth2::from_address("hello@googlemail.com", false).await,
+            Oauth2::from_address(&t, "hello@googlemail.com", false).await,
             Some(OAUTH2_GMAIL)
         );
         assert_eq!(
-            Oauth2::from_address("hello@yandex.com", false).await,
+            Oauth2::from_address(&t, "hello@yandex.com", false).await,
             Some(OAUTH2_YANDEX)
         );
         assert_eq!(
-            Oauth2::from_address("hello@yandex.ru", false).await,
+            Oauth2::from_address(&t, "hello@yandex.ru", false).await,
             Some(OAUTH2_YANDEX)
         );
-
-        assert_eq!(Oauth2::from_address("hello@web.de", false).await, None);
+        assert_eq!(Oauth2::from_address(&t, "hello@web.de", false).await, None);
     }
 
     #[async_std::test]
     async fn test_oauth_from_mx() {
+        // youtube staff seems to use "google workspace with oauth2", figures this out by MX lookup
+        let t = TestContext::new().await;
         assert_eq!(
-            Oauth2::from_address("hello@google.com", false).await,
+            Oauth2::from_address(&t, "hello@youtube.com", false).await,
             Some(OAUTH2_GMAIL)
         );
+        // without MX lookup, we would not know as youtube.com is not in our provider-db
+        assert_eq!(
+            Oauth2::from_address(&t, "hello@youtube.com", true).await,
+            None
+        );
     }
 
     #[async_std::test]

src/param.rs

@@ -4,7 +4,6 @@ use std::str;
 
 use anyhow::{bail, Error};
 use async_std::path::PathBuf;
-use itertools::Itertools;
 use num_traits::FromPrimitive;
 use serde::{Deserialize, Serialize};
 
@@ -111,8 +110,8 @@ pub enum Param {
     /// For Jobs
     AlsoMove = b'M',
 
-    /// For Jobs: space-separated list of message recipients
-    Recipients = b'R',
+    /// For MDN-sending job
+    MsgId = b'I',
 
     /// For Groups
     ///
@@ -137,8 +136,44 @@ pub enum Param {
     /// For Chats
     Devicetalk = b'D',
 
-    /// For MDN-sending job
-    MsgId = b'I',
+    /// For Chats: If this is a mailing list chat, contains the List-Post address.
+    /// None if there simply is no `List-Post` header in the mailing list.
+    /// Some("") if the mailing list is using multiple different List-Post headers.
+    ///
+    /// The List-Post address is the email address where the user can write to in order to
+    /// post something to the mailing list.
+    ListPost = b'p',
+
+    /// For Contacts: If this is the List-Post address of a mailing list, contains
+    /// the List-Id of the mailing list (which is also used as the group id of the chat).
+    ListId = b's',
+
+    /// For Contacts: timestamp of status (aka signature or footer) update.
+    StatusTimestamp = b'j',
+
+    /// For Contacts and Chats: timestamp of avatar update.
+    AvatarTimestamp = b'J',
+
+    /// For Chats: timestamp of status/signature/footer update.
+    EphemeralSettingsTimestamp = b'B',
+
+    /// For Chats: timestamp of subject update.
+    SubjectTimestamp = b'C',
+
+    /// For Chats: timestamp of group name update.
+    GroupNameTimestamp = b'g',
+
+    /// For Chats: timestamp of group name update.
+    MemberListTimestamp = b'k',
+
+    /// For Chats: timestamp of protection settings update.
+    ProtectionSettingsTimestamp = b'L',
+
+    /// For Webxdc Message Instances: Current summary
+    WebxdcSummary = b'N',
+
+    /// For Webxdc Message Instances: timestamp of summary update.
+    WebxdcSummaryTimestamp = b'Q',
 }
 
 /// An object for handling key=value parameter lists.
@@ -161,7 +196,7 @@ impl fmt::Display for Params {
                 f,
                 "{}={}",
                 *key as u8 as char,
-                value.split('\n').join("\n\n")
+                value.split('\n').collect::<Vec<&str>>().join("\n\n")
             )?;
         }
         Ok(())
@@ -171,6 +206,11 @@ impl fmt::Display for Params {
 impl str::FromStr for Params {
     type Err = Error;
 
+    /// Parse a raw string to Param.
+    ///
+    /// Silently ignore unknown keys:
+    /// they may come from a downgrade (when a shortly new version adds a key)
+    /// or from an upgrade (when a key is dropped but was used in the past)
     fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
         let mut inner = BTreeMap::new();
         let mut lines = s.lines().peekable();
@@ -190,8 +230,6 @@ impl str::FromStr for Params {
 
                 if let Some(key) = key.as_bytes().first().and_then(|key| Param::from_u8(*key)) {
                     inner.insert(key, value);
-                } else {
-                    bail!("Unknown key: {}", key);
                 }
             } else {
                 bail!("Not a key-value pair: {:?}", line);
@@ -245,6 +283,11 @@ impl Params {
         self.get(key).and_then(|s| s.parse().ok())
     }
 
+    /// Get the given parameter and parse as `i64`.
+    pub fn get_i64(&self, key: Param) -> Option<i64> {
+        self.get(key).and_then(|s| s.parse().ok())
+    }
+
     /// Get the given parameter and parse as `bool`.
     pub fn get_bool(&self, key: Param) -> Option<bool> {
         self.get_int(key).map(|v| v != 0)
@@ -346,6 +389,12 @@ impl Params {
         self
     }
 
+    /// Set the given paramter to the passed in `i64`.
+    pub fn set_i64(&mut self, key: Param, value: i64) -> &mut Self {
+        self.set(key, value.to_string());
+        self
+    }
+
     /// Set the given parameter to the passed in `f64` .
     pub fn set_float(&mut self, key: Param, value: f64) -> &mut Self {
         self.set(key, format!("{}", value));
@@ -383,10 +432,12 @@ impl<'a> ParamsFile<'a> {
 mod tests {
     use super::*;
 
+    use anyhow::Result;
     use async_std::fs;
     use async_std::path::Path;
 
     use crate::test_utils::TestContext;
+    use std::str::FromStr;
 
     #[test]
     fn test_dc_param() {
@@ -489,4 +540,14 @@ mod tests {
         assert!(p.get_path(Param::File, &t).unwrap().is_none());
         assert!(p.get_blob(Param::File, &t, false).await.unwrap().is_none());
     }
+
+    #[async_std::test]
+    async fn test_params_unknown_key() -> Result<()> {
+        // 'Z' is used as a key that is known to be unused; these keys should be ignored silently by definition.
+        let p = Params::from_str("w=12\nZ=13\nh=14")?;
+        assert_eq!(p.len(), 2);
+        assert_eq!(p.get(Param::Width), Some("12"));
+        assert_eq!(p.get(Param::Height), Some("14"));
+        Ok(())
+    }
 }

src/peerstate.rs

@@ -277,8 +277,8 @@ impl Peerstate {
 
                 let msg = stock_str::contact_setup_changed(context, self.addr.clone()).await;
 
-                chat::add_info_msg(context, chat_id, msg, timestamp).await;
-                emit_event!(context, EventType::ChatModified(chat_id));
+                chat::add_info_msg(context, chat_id, &msg, timestamp).await?;
+                context.emit_event(EventType::ChatModified(chat_id));
             } else {
                 bail!("contact with peerstate.addr {:?} not found", &self.addr);
             }
@@ -496,11 +496,34 @@ impl Peerstate {
     }
 }
 
+/// Removes duplicate peerstates from `acpeerstates` database table.
+///
+/// Normally there should be no more than one peerstate per address.
+/// However, the database does not enforce this condition.
+///
+/// Previously there were bugs that caused creation of additional
+/// peerstates when existing peerstate could not be read due to a
+/// temporary database error or a failure to parse stored data.  This
+/// procedure fixes the problem by removing duplicate records.
+pub(crate) async fn deduplicate_peerstates(sql: &Sql) -> Result<()> {
+    sql.execute(
+        "DELETE FROM acpeerstates
+         WHERE id NOT IN (
+         SELECT MIN(id)
+         FROM acpeerstates
+         GROUP BY addr
+         )",
+        paramsv![],
+    )
+    .await?;
+
+    Ok(())
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
     use crate::test_utils::alice_keypair;
-    use pretty_assertions::assert_eq;
 
     #[async_std::test]
     async fn test_peerstate_save_to_db() {

src/pgp.rs

@@ -4,11 +4,11 @@ use std::collections::{BTreeMap, HashSet};
 use std::io;
 use std::io::Cursor;
 
-use anyhow::{bail, ensure, format_err, Result};
+use anyhow::{bail, ensure, format_err, Context as _, Result};
 use pgp::armor::BlockType;
 use pgp::composed::{
     Deserializable, KeyType as PgpKeyType, Message, SecretKeyParamsBuilder, SignedPublicKey,
-    SignedPublicSubKey, SignedSecretKey, SubkeyParamsBuilder,
+    SignedPublicSubKey, SignedSecretKey, StandaloneSignature, SubkeyParamsBuilder,
 };
 use pgp::crypto::{HashAlgorithm, SymmetricKeyAlgorithm};
 use pgp::types::{
@@ -248,7 +248,7 @@ pub async fn pk_encrypt(
         let pkeys: Vec<SignedPublicKeyOrSubkey> = public_keys_for_encryption
             .keys()
             .iter()
-            .filter_map(|key| select_pk_for_encryption(key))
+            .filter_map(select_pk_for_encryption)
             .collect();
         let pkeys_refs: Vec<&SignedPublicKeyOrSubkey> = pkeys.iter().collect();
 
@@ -277,16 +277,17 @@ pub async fn pk_encrypt(
 /// Receiver private keys are provided in
 /// `private_keys_for_decryption`.
 ///
-/// If `ret_signature_fingerprints` is not `None`, stores fingerprints
+/// Returns decrypted message and fingerprints
 /// of all keys from the `public_keys_for_validation` keyring that
 /// have valid signatures there.
 #[allow(clippy::implicit_hasher)]
 pub async fn pk_decrypt(
     ctext: Vec<u8>,
     private_keys_for_decryption: Keyring<SignedSecretKey>,
-    public_keys_for_validation: Keyring<SignedPublicKey>,
-    ret_signature_fingerprints: Option<&mut HashSet<Fingerprint>>,
-) -> Result<Vec<u8>> {
+    public_keys_for_validation: &Keyring<SignedPublicKey>,
+) -> Result<(Vec<u8>, HashSet<Fingerprint>)> {
+    let mut ret_signature_fingerprints: HashSet<Fingerprint> = Default::default();
+
     let msgs = async_std::task::spawn_blocking(move || {
         let cursor = Cursor::new(ctext);
         let (msg, _) = Message::from_armor_single(cursor)?;
@@ -308,33 +309,54 @@ pub async fn pk_decrypt(
             None => bail!("The decrypted message is empty"),
         };
 
-        if let Some(ret_signature_fingerprints) = ret_signature_fingerprints {
-            if !public_keys_for_validation.is_empty() {
-                let fingerprints = async_std::task::spawn_blocking(move || {
-                    let pkeys = public_keys_for_validation.keys();
+        if !public_keys_for_validation.is_empty() {
+            let pkeys = public_keys_for_validation.keys();
 
-                    let mut fingerprints: Vec<Fingerprint> = Vec::new();
-                    if let signed_msg @ pgp::composed::Message::Signed { .. } = msg {
-                        for pkey in pkeys {
-                            if signed_msg.verify(&pkey.primary_key).is_ok() {
-                                let fp = DcKey::fingerprint(pkey);
-                                fingerprints.push(fp);
-                            }
-                        }
+            let mut fingerprints: Vec<Fingerprint> = Vec::new();
+            if let signed_msg @ pgp::composed::Message::Signed { .. } = msg {
+                for pkey in pkeys {
+                    if signed_msg.verify(&pkey.primary_key).is_ok() {
+                        let fp = DcKey::fingerprint(pkey);
+                        fingerprints.push(fp);
                     }
-                    fingerprints
-                })
-                .await;
-
-                ret_signature_fingerprints.extend(fingerprints);
+                }
             }
+
+            ret_signature_fingerprints.extend(fingerprints);
         }
-        Ok(content)
+        Ok((content, ret_signature_fingerprints))
     } else {
         bail!("No valid messages found");
     }
 }
 
+/// Validates detached signature.
+pub async fn pk_validate(
+    content: &[u8],
+    signature: &[u8],
+    public_keys_for_validation: &Keyring<SignedPublicKey>,
+) -> Result<HashSet<Fingerprint>> {
+    let mut ret: HashSet<Fingerprint> = Default::default();
+
+    let standalone_signature = StandaloneSignature::from_armor_single(Cursor::new(signature))?.0;
+    let pkeys = public_keys_for_validation.keys();
+
+    // Remove trailing CRLF before the delimiter.
+    // According to RFC 3156 it is considered to be part of the MIME delimiter for the purpose of
+    // OpenPGP signature calculation.
+    let content = content
+        .get(..content.len().saturating_sub(2))
+        .context("index is out of range")?;
+
+    for pkey in pkeys {
+        if standalone_signature.verify(pkey, content).is_ok() {
+            let fp = DcKey::fingerprint(pkey);
+            ret.insert(fp);
+        }
+    }
+    Ok(ret)
+}
+
 /// Symmetric encryption.
 pub async fn symm_encrypt(passphrase: &str, plain: &[u8]) -> Result<String> {
     let lit_msg = Message::new_literal_bytes("", plain);
@@ -492,15 +514,12 @@ mod tests {
         decrypt_keyring.add(KEYS.alice_secret.clone());
         let mut sig_check_keyring: Keyring<SignedPublicKey> = Keyring::new();
         sig_check_keyring.add(KEYS.alice_public.clone());
-        let mut valid_signatures: HashSet<Fingerprint> = Default::default();
-        let plain = pk_decrypt(
+        let (plain, valid_signatures) = pk_decrypt(
             CTEXT_SIGNED.as_bytes().to_vec(),
             decrypt_keyring,
-            sig_check_keyring,
-            Some(&mut valid_signatures),
+            &sig_check_keyring,
         )
         .await
-        .map_err(|err| println!("{:?}", err))
         .unwrap();
         assert_eq!(plain, CLEARTEXT);
         assert_eq!(valid_signatures.len(), 1);
@@ -510,15 +529,12 @@ mod tests {
         decrypt_keyring.add(KEYS.bob_secret.clone());
         let mut sig_check_keyring = Keyring::new();
         sig_check_keyring.add(KEYS.alice_public.clone());
-        let mut valid_signatures: HashSet<Fingerprint> = Default::default();
-        let plain = pk_decrypt(
+        let (plain, valid_signatures) = pk_decrypt(
             CTEXT_SIGNED.as_bytes().to_vec(),
             decrypt_keyring,
-            sig_check_keyring,
-            Some(&mut valid_signatures),
+            &sig_check_keyring,
         )
         .await
-        .map_err(|err| println!("{:?}", err))
         .unwrap();
         assert_eq!(plain, CLEARTEXT);
         assert_eq!(valid_signatures.len(), 1);
@@ -529,15 +545,10 @@ mod tests {
         let mut keyring = Keyring::new();
         keyring.add(KEYS.alice_secret.clone());
         let empty_keyring = Keyring::new();
-        let mut valid_signatures: HashSet<Fingerprint> = Default::default();
-        let plain = pk_decrypt(
-            CTEXT_SIGNED.as_bytes().to_vec(),
-            keyring,
-            empty_keyring,
-            Some(&mut valid_signatures),
-        )
-        .await
-        .unwrap();
+        let (plain, valid_signatures) =
+            pk_decrypt(CTEXT_SIGNED.as_bytes().to_vec(), keyring, &empty_keyring)
+                .await
+                .unwrap();
         assert_eq!(plain, CLEARTEXT);
         assert_eq!(valid_signatures.len(), 0);
     }
@@ -549,12 +560,10 @@ mod tests {
         decrypt_keyring.add(KEYS.bob_secret.clone());
         let mut sig_check_keyring = Keyring::new();
         sig_check_keyring.add(KEYS.bob_public.clone());
-        let mut valid_signatures: HashSet<Fingerprint> = Default::default();
-        let plain = pk_decrypt(
+        let (plain, valid_signatures) = pk_decrypt(
             CTEXT_SIGNED.as_bytes().to_vec(),
             decrypt_keyring,
-            sig_check_keyring,
-            Some(&mut valid_signatures),
+            &sig_check_keyring,
         )
         .await
         .unwrap();
@@ -567,34 +576,14 @@ mod tests {
         let mut decrypt_keyring = Keyring::new();
         decrypt_keyring.add(KEYS.bob_secret.clone());
         let sig_check_keyring = Keyring::new();
-        let mut valid_signatures: HashSet<Fingerprint> = Default::default();
-        let plain = pk_decrypt(
+        let (plain, valid_signatures) = pk_decrypt(
             CTEXT_UNSIGNED.as_bytes().to_vec(),
             decrypt_keyring,
-            sig_check_keyring,
-            Some(&mut valid_signatures),
+            &sig_check_keyring,
         )
         .await
         .unwrap();
         assert_eq!(plain, CLEARTEXT);
         assert_eq!(valid_signatures.len(), 0);
     }
-
-    #[async_std::test]
-    async fn test_decrypt_signed_no_sigret() {
-        // Check decrypting signed cyphertext without providing the HashSet for signatures.
-        let mut decrypt_keyring = Keyring::new();
-        decrypt_keyring.add(KEYS.bob_secret.clone());
-        let mut sig_check_keyring = Keyring::new();
-        sig_check_keyring.add(KEYS.alice_public.clone());
-        let plain = pk_decrypt(
-            CTEXT_SIGNED.as_bytes().to_vec(),
-            decrypt_keyring,
-            sig_check_keyring,
-            None,
-        )
-        .await
-        .unwrap();
-        assert_eq!(plain, CLEARTEXT);
-    }
 }

src/provider.rs

@@ -3,8 +3,10 @@
 mod data;
 
 use crate::config::Config;
+use crate::context::Context;
 use crate::provider::data::{PROVIDER_DATA, PROVIDER_IDS, PROVIDER_UPDATED};
-use async_std_resolver::{config, resolver};
+use anyhow::Result;
+use async_std_resolver::{config, resolver, resolver_from_system_conf, AsyncStdResolver};
 use chrono::{NaiveDateTime, NaiveTime};
 
 #[derive(Debug, Display, Copy, Clone, PartialEq, FromPrimitive, ToPrimitive)]
@@ -81,6 +83,23 @@ pub struct Provider {
     pub oauth2_authorizer: Option<Oauth2Authorizer>,
 }
 
+/// Get resolver to query MX records.
+///
+/// We first try resolver_from_system_conf() which reads the system's resolver from `/etc/resolv.conf`.
+/// This does not work at least on some Androids, therefore we use use ResolverConfig::default()
+/// which default eg. to google's 8.8.8.8 or 8.8.4.4 as a fallback.
+async fn get_resolver() -> Result<AsyncStdResolver> {
+    if let Ok(resolver) = resolver_from_system_conf().await {
+        return Ok(resolver);
+    }
+    let resolver = resolver(
+        config::ResolverConfig::default(),
+        config::ResolverOpts::default(),
+    )
+    .await?;
+    Ok(resolver)
+}
+
 /// Returns provider for the given domain.
 ///
 /// This function looks up domain in offline database first. If not
@@ -89,7 +108,11 @@ pub struct Provider {
 ///
 /// For compatibility, email address can be passed to this function
 /// instead of the domain.
-pub async fn get_provider_info(domain: &str, skip_mx: bool) -> Option<&'static Provider> {
+pub async fn get_provider_info(
+    context: &Context,
+    domain: &str,
+    skip_mx: bool,
+) -> Option<&'static Provider> {
     let domain = domain.rsplitn(2, '@').next()?;
 
     if let Some(provider) = get_provider_by_domain(domain) {
@@ -97,7 +120,7 @@ pub async fn get_provider_info(domain: &str, skip_mx: bool) -> Option<&'static P
     }
 
     if !skip_mx {
-        if let Some(provider) = get_provider_by_mx(domain).await {
+        if let Some(provider) = get_provider_by_mx(context, domain).await {
             return Some(provider);
         }
     }
@@ -117,13 +140,8 @@ pub fn get_provider_by_domain(domain: &str) -> Option<&'static Provider> {
 /// Finds a provider based on MX record for the given domain.
 ///
 /// For security reasons, only Gmail can be configured this way.
-pub async fn get_provider_by_mx(domain: &str) -> Option<&'static Provider> {
-    if let Ok(resolver) = resolver(
-        config::ResolverConfig::default(),
-        config::ResolverOpts::default(),
-    )
-    .await
-    {
+pub async fn get_provider_by_mx(context: &Context, domain: &str) -> Option<&'static Provider> {
+    if let Ok(resolver) = get_resolver().await {
         let mut fqdn: String = domain.to_string();
         if !fqdn.ends_with('.') {
             fqdn.push('.');
@@ -148,6 +166,8 @@ pub async fn get_provider_by_mx(domain: &str) -> Option<&'static Provider> {
                 }
             }
         }
+    } else {
+        warn!(context, "cannot get a resolver to check MX records.");
     }
 
     None
@@ -174,6 +194,7 @@ mod tests {
 
     use super::*;
     use crate::dc_tools::time;
+    use crate::test_utils::TestContext;
     use chrono::NaiveDate;
 
     #[test]
@@ -223,12 +244,13 @@ mod tests {
 
     #[async_std::test]
     async fn test_get_provider_info() {
-        assert!(get_provider_info("", false).await.is_none());
-        assert!(get_provider_info("google.com", false).await.unwrap().id == "gmail");
+        let t = TestContext::new().await;
+        assert!(get_provider_info(&t, "", false).await.is_none());
+        assert!(get_provider_info(&t, "google.com", false).await.unwrap().id == "gmail");
 
         // get_provider_info() accepts email addresses for backwards compatibility
         assert!(
-            get_provider_info("example@google.com", false)
+            get_provider_info(&t, "example@google.com", false)
                 .await
                 .unwrap()
                 .id
@@ -247,4 +269,10 @@ mod tests {
         assert!(get_provider_update_timestamp() <= time());
         assert!(get_provider_update_timestamp() > timestamp_past);
     }
+
+    #[async_std::test]
+    async fn test_get_resolver() -> Result<()> {
+        assert!(get_resolver().await.is_ok());
+        Ok(())
+    }
 }

src/provider/data.rs

@@ -131,6 +131,35 @@ static P_AUTISTICI_ORG: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
+// blindzeln.org.md: delta.blinzeln.de, delta.blindzeln.org
+static P_BLINDZELN_ORG: Lazy<Provider> = Lazy::new(|| Provider {
+    id: "blindzeln.org",
+    status: Status::Ok,
+    before_login_hint: "",
+    after_login_hint: "",
+    overview_page: "https://providers.delta.chat/blindzeln-org",
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "webbox222.server-home.org",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "webbox222.server-home.org",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
+    config_defaults: None,
+    strict_tls: true,
+    max_smtp_rcpt_to: None,
+    oauth2_authorizer: None,
+});
+
 // bluewin.ch.md: bluewin.ch
 static P_BLUEWIN_CH: Lazy<Provider> = Lazy::new(|| Provider {
     id: "bluewin.ch",
@@ -253,61 +282,23 @@ static P_DISROOT: Lazy<Provider> = Lazy::new(|| Provider {
     before_login_hint: "",
     after_login_hint: "",
     overview_page: "https://providers.delta.chat/disroot",
-    server: vec![],
-    config_defaults: None,
-    strict_tls: true,
-    max_smtp_rcpt_to: None,
-    oauth2_authorizer: None,
-});
-
-// dubby.org.md: dubby.org
-static P_DUBBY_ORG: Lazy<Provider> = Lazy::new(|| Provider {
-    id: "dubby.org",
-    status: Status::Ok,
-    before_login_hint: "",
-    after_login_hint: "",
-    overview_page: "https://providers.delta.chat/dubby-org",
     server: vec![
         Server {
             protocol: Imap,
             socket: Ssl,
-            hostname: "dubby.org",
+            hostname: "disroot.org",
             port: 993,
             username_pattern: Email,
         },
         Server {
             protocol: Smtp,
             socket: Starttls,
-            hostname: "dubby.org",
+            hostname: "disroot.org",
             port: 587,
             username_pattern: Email,
         },
-        Server {
-            protocol: Smtp,
-            socket: Ssl,
-            hostname: "dubby.org",
-            port: 465,
-            username_pattern: Email,
-        },
     ],
-    config_defaults: Some(vec![
-        ConfigDefault {
-            key: Config::BccSelf,
-            value: "1",
-        },
-        ConfigDefault {
-            key: Config::SentboxWatch,
-            value: "0",
-        },
-        ConfigDefault {
-            key: Config::MvboxWatch,
-            value: "0",
-        },
-        ConfigDefault {
-            key: Config::MvboxMove,
-            value: "0",
-        },
-    ]),
+    config_defaults: None,
     strict_tls: true,
     max_smtp_rcpt_to: None,
     oauth2_authorizer: None,
@@ -446,10 +437,6 @@ static P_FIVE_CHAT: Lazy<Provider> = Lazy::new(|| Provider {
             key: Config::SentboxWatch,
             value: "0",
         },
-        ConfigDefault {
-            key: Config::MvboxWatch,
-            value: "0",
-        },
         ConfigDefault {
             key: Config::MvboxMove,
             value: "0",
@@ -639,6 +626,35 @@ static P_ICLOUD: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
+// infomaniak.com.md: ik.me
+static P_INFOMANIAK_COM: Lazy<Provider> = Lazy::new(|| Provider {
+    id: "infomaniak.com",
+    status: Status::Ok,
+    before_login_hint: "",
+    after_login_hint: "",
+    overview_page: "https://providers.delta.chat/infomaniak-com",
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "mail.infomaniak.com",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "mail.infomaniak.com",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
+    config_defaults: None,
+    strict_tls: true,
+    max_smtp_rcpt_to: Some(10),
+    oauth2_authorizer: None,
+});
+
 // kolst.com.md: kolst.com
 static P_KOLST_COM: Lazy<Provider> = Lazy::new(|| Provider {
     id: "kolst.com",
@@ -667,6 +683,35 @@ static P_KONTENT_COM: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
+// mail.de.md: mail.de
+static P_MAIL_DE: Lazy<Provider> = Lazy::new(|| Provider {
+    id: "mail.de",
+    status: Status::Ok,
+    before_login_hint: "",
+    after_login_hint: "",
+    overview_page: "https://providers.delta.chat/mail-de",
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "imap.mail.de",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "smtp.mail.de",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
+    config_defaults: None,
+    strict_tls: true,
+    max_smtp_rcpt_to: None,
+    oauth2_authorizer: None,
+});
+
 // mail.ru.md: mail.ru, inbox.ru, internet.ru, bk.ru, list.ru
 static P_MAIL_RU: Lazy<Provider> = Lazy::new(|| {
     Provider {
@@ -722,7 +767,22 @@ static P_MAILBOX_ORG: Lazy<Provider> = Lazy::new(|| Provider {
     before_login_hint: "",
     after_login_hint: "",
     overview_page: "https://providers.delta.chat/mailbox-org",
-    server: vec![],
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "imap.mailbox.org",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "smtp.mailbox.org",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
     config_defaults: None,
     strict_tls: true,
     max_smtp_rcpt_to: None,
@@ -794,10 +854,6 @@ static P_NAUTA_CU: Lazy<Provider> = Lazy::new(|| Provider {
             key: Config::SentboxWatch,
             value: "0",
         },
-        ConfigDefault {
-            key: Config::MvboxWatch,
-            value: "0",
-        },
         ConfigDefault {
             key: Config::MvboxMove,
             value: "0",
@@ -878,7 +934,7 @@ static P_OUTLOOK_COM: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
-// posteo.md: posteo.de, posteo.af, posteo.at, posteo.be, posteo.ch, posteo.cl, posteo.co, posteo.co.uk, posteo.com.br, posteo.cr, posteo.cz, posteo.dk, posteo.ee, posteo.es, posteo.eu, posteo.fi, posteo.gl, posteo.gr, posteo.hn, posteo.hr, posteo.hu, posteo.ie, posteo.in, posteo.is, posteo.it, posteo.jp, posteo.la, posteo.li, posteo.lt, posteo.lu, posteo.me, posteo.mx, posteo.my, posteo.net, posteo.nl, posteo.no, posteo.nz, posteo.org, posteo.pe, posteo.pl, posteo.pm, posteo.pt, posteo.ro, posteo.ru, posteo.se, posteo.sg, posteo.si, posteo.tn, posteo.uk, posteo.us
+// posteo.md: posteo.de, posteo.af, posteo.at, posteo.be, posteo.ca, posteo.ch, posteo.cl, posteo.co, posteo.co.uk, posteo.com.br, posteo.cr, posteo.cz, posteo.dk, posteo.ee, posteo.es, posteo.eu, posteo.fi, posteo.gl, posteo.gr, posteo.hn, posteo.hr, posteo.hu, posteo.ie, posteo.in, posteo.is, posteo.it, posteo.jp, posteo.la, posteo.li, posteo.lt, posteo.lu, posteo.me, posteo.mx, posteo.my, posteo.net, posteo.nl, posteo.no, posteo.nz, posteo.org, posteo.pe, posteo.pl, posteo.pm, posteo.pt, posteo.ro, posteo.ru, posteo.se, posteo.sg, posteo.si, posteo.tn, posteo.uk, posteo.us
 static P_POSTEO: Lazy<Provider> = Lazy::new(|| Provider {
     id: "posteo",
     status: Status::Ok,
@@ -907,7 +963,7 @@ static P_POSTEO: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
-// protonmail.md: protonmail.com, protonmail.ch
+// protonmail.md: protonmail.com, protonmail.ch, pm.me
 static P_PROTONMAIL: Lazy<Provider> = Lazy::new(|| {
     Provider {
     id: "protonmail",
@@ -950,7 +1006,22 @@ static P_RISEUP_NET: Lazy<Provider> = Lazy::new(|| Provider {
     before_login_hint: "",
     after_login_hint: "",
     overview_page: "https://providers.delta.chat/riseup-net",
-    server: vec![],
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "mail.riseup.net",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "mail.riseup.net",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
     config_defaults: None,
     strict_tls: true,
     max_smtp_rcpt_to: None,
@@ -1007,7 +1078,22 @@ static P_SYSTEMLI_ORG: Lazy<Provider> = Lazy::new(|| Provider {
     before_login_hint: "",
     after_login_hint: "",
     overview_page: "https://providers.delta.chat/systemli-org",
-    server: vec![],
+    server: vec![
+        Server {
+            protocol: Imap,
+            socket: Ssl,
+            hostname: "mail.systemli.org",
+            port: 993,
+            username_pattern: Email,
+        },
+        Server {
+            protocol: Smtp,
+            socket: Ssl,
+            hostname: "mail.systemli.org",
+            port: 465,
+            username_pattern: Email,
+        },
+    ],
     config_defaults: None,
     strict_tls: true,
     max_smtp_rcpt_to: None,
@@ -1072,10 +1158,6 @@ static P_TESTRUN: Lazy<Provider> = Lazy::new(|| Provider {
             key: Config::SentboxWatch,
             value: "0",
         },
-        ConfigDefault {
-            key: Config::MvboxWatch,
-            value: "0",
-        },
         ConfigDefault {
             key: Config::MvboxMove,
             value: "0",
@@ -1363,7 +1445,7 @@ static P_ZIGGO_NL: Lazy<Provider> = Lazy::new(|| Provider {
     oauth2_authorizer: None,
 });
 
-// zoho.md: zohomail.eu, zoho.com
+// zoho.md: zohomail.eu, zohomail.com, zoho.com
 static P_ZOHO: Lazy<Provider> = Lazy::new(|| Provider {
     id: "zoho",
     status: Status::Preparation,
@@ -1399,6 +1481,8 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("aol.com", &*P_AOL),
         ("arcor.de", &*P_ARCOR_DE),
         ("autistici.org", &*P_AUTISTICI_ORG),
+        ("delta.blinzeln.de", &*P_BLINDZELN_ORG),
+        ("delta.blindzeln.org", &*P_BLINDZELN_ORG),
         ("bluewin.ch", &*P_BLUEWIN_CH),
         ("buzon.uy", &*P_BUZON_UY),
         ("chello.at", &*P_CHELLO_AT),
@@ -1406,7 +1490,6 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("comcast.net", &*P_COMCAST),
         ("dismail.de", &*P_DISMAIL_DE),
         ("disroot.org", &*P_DISROOT),
-        ("dubby.org", &*P_DUBBY_ORG),
         ("e.email", &*P_E_EMAIL),
         ("espiv.net", &*P_ESPIV_NET),
         ("example.com", &*P_EXAMPLE_COM),
@@ -1436,8 +1519,10 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("icloud.com", &*P_ICLOUD),
         ("me.com", &*P_ICLOUD),
         ("mac.com", &*P_ICLOUD),
+        ("ik.me", &*P_INFOMANIAK_COM),
         ("kolst.com", &*P_KOLST_COM),
         ("kontent.com", &*P_KONTENT_COM),
+        ("mail.de", &*P_MAIL_DE),
         ("mail.ru", &*P_MAIL_RU),
         ("inbox.ru", &*P_MAIL_RU),
         ("internet.ru", &*P_MAIL_RU),
@@ -1458,6 +1543,7 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("posteo.af", &*P_POSTEO),
         ("posteo.at", &*P_POSTEO),
         ("posteo.be", &*P_POSTEO),
+        ("posteo.ca", &*P_POSTEO),
         ("posteo.ch", &*P_POSTEO),
         ("posteo.cl", &*P_POSTEO),
         ("posteo.co", &*P_POSTEO),
@@ -1506,6 +1592,7 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("posteo.us", &*P_POSTEO),
         ("protonmail.com", &*P_PROTONMAIL),
         ("protonmail.ch", &*P_PROTONMAIL),
+        ("pm.me", &*P_PROTONMAIL),
         ("qq.com", &*P_QQ),
         ("foxmail.com", &*P_QQ),
         ("riseup.net", &*P_RISEUP_NET),
@@ -1580,6 +1667,7 @@ pub(crate) static PROVIDER_DATA: Lazy<HashMap<&'static str, &'static Provider>>
         ("yggmail", &*P_YGGMAIL),
         ("ziggo.nl", &*P_ZIGGO_NL),
         ("zohomail.eu", &*P_ZOHO),
+        ("zohomail.com", &*P_ZOHO),
         ("zoho.com", &*P_ZOHO),
     ]
     .iter()
@@ -1594,13 +1682,13 @@ pub(crate) static PROVIDER_IDS: Lazy<HashMap<&'static str, &'static Provider>> =
         ("aol", &*P_AOL),
         ("arcor.de", &*P_ARCOR_DE),
         ("autistici.org", &*P_AUTISTICI_ORG),
+        ("blindzeln.org", &*P_BLINDZELN_ORG),
         ("bluewin.ch", &*P_BLUEWIN_CH),
         ("buzon.uy", &*P_BUZON_UY),
         ("chello.at", &*P_CHELLO_AT),
         ("comcast", &*P_COMCAST),
         ("dismail.de", &*P_DISMAIL_DE),
         ("disroot", &*P_DISROOT),
-        ("dubby.org", &*P_DUBBY_ORG),
         ("e.email", &*P_E_EMAIL),
         ("espiv.net", &*P_ESPIV_NET),
         ("example.com", &*P_EXAMPLE_COM),
@@ -1615,8 +1703,10 @@ pub(crate) static PROVIDER_IDS: Lazy<HashMap<&'static str, &'static Provider>> =
         ("i.ua", &*P_I_UA),
         ("i3.net", &*P_I3_NET),
         ("icloud", &*P_ICLOUD),
+        ("infomaniak.com", &*P_INFOMANIAK_COM),
         ("kolst.com", &*P_KOLST_COM),
         ("kontent.com", &*P_KONTENT_COM),
+        ("mail.de", &*P_MAIL_DE),
         ("mail.ru", &*P_MAIL_RU),
         ("mail2tor", &*P_MAIL2TOR),
         ("mailbox.org", &*P_MAILBOX_ORG),
@@ -1653,4 +1743,4 @@ pub(crate) static PROVIDER_IDS: Lazy<HashMap<&'static str, &'static Provider>> =
 });
 
 pub static PROVIDER_UPDATED: Lazy<chrono::NaiveDate> =
-    Lazy::new(|| chrono::NaiveDate::from_ymd(2021, 8, 17));
+    Lazy::new(|| chrono::NaiveDate::from_ymd(2022, 1, 11));