Filter unconventional commits, they cluttered the changelog too much

BREAKING CHANGE: this breaks everything

.github/mergeable.yml

@@ -1,26 +1,15 @@
 version: 2
 mergeable:
   - when: pull_request.*
-    name: "Changelog check"
+    name: "Conventional Commits"
     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/src/**"
-                  required: ["CHANGELOG.md"]
+      - do: title
+        begins_with:
+          match: ['feat', 'fix', 'api', 'refactor', 'perf', 'test', 'style', 'chore']
+
     fail:
       - do: checks
         status: "action_required"
         payload:
-          title: Changelog might need an update
-          summary: "Check if CHANGELOG.md needs an update or add #skip-changelog to the PR description."
+          title: PR title should follow conventional commits
+          summary: "PR title should follow https://conventionalcommits.org. E.g. start with 'feat:' (for Features / Changes), 'fix:' (for Fixes), 'api:' (for API-Changes), 'api!:' (for breaking API-Changes) 'refactor:' (for Refactor), 'perf:' (for Performance), 'test:' (for Tests), 'style:' (for Styling), 'chore:' (for Miscellaneous Tasks)"

.github/workflows/ci.yml

@@ -16,11 +16,11 @@ env:
   RUSTFLAGS: -Dwarnings
 
 jobs:
-  lint:
-    name: Rustfmt and Clippy
+  lint_rust:
+    name: Lint Rust
     runs-on: ubuntu-latest
     env:
-      RUSTUP_TOOLCHAIN: 1.68.0
+      RUSTUP_TOOLCHAIN: 1.68.2
     steps:
       - uses: actions/checkout@v3
       - name: Install rustfmt and clippy
@@ -31,6 +31,8 @@ jobs:
         run: cargo fmt --all -- --check
       - name: Run clippy
         run: scripts/clippy.sh
+      - name: Check
+        run: cargo check --workspace --all-targets --all-features
 
   cargo_deny:
     name: cargo deny
@@ -64,31 +66,28 @@ jobs:
       - name: Rustdoc
         run: cargo doc --document-private-items --no-deps
 
-  build_and_test:
-    name: Build and test
+  rust_tests:
+    name: Rust tests
     strategy:
-      fail-fast: false
       matrix:
         include:
-          # Currently used Rust version.
           - os: ubuntu-latest
-            rust: 1.68.0
-            python: 3.9
+            rust: 1.68.2
           - os: windows-latest
-            rust: 1.68.0
-            python: false # Python bindings compilation on Windows is not supported.
+            rust: 1.68.2
+          - os: macos-latest
+            rust: 1.68.2
 
-          # Minimum Supported Rust Version = 1.64.0
+          # Minimum Supported Rust Version = 1.65.0
           #
           # Minimum Supported Python Version = 3.7
           # This is the minimum version for which manylinux Python wheels are
           # built.
           - os: ubuntu-latest
-            rust: 1.64.0
-            python: 3.7
+            rust: 1.65.0
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v3
 
       - name: Install Rust ${{ matrix.rust }}
         run: rustup toolchain install --profile minimal ${{ matrix.rust }}
@@ -97,64 +96,176 @@ jobs:
       - name: Cache rust cargo artifacts
         uses: swatinem/rust-cache@v2
 
-      - name: Check
-        run: cargo check --workspace --bins --examples --tests --benches
-
       - name: Tests
         run: cargo test --workspace
 
       - name: Test cargo vendor
         run: cargo vendor
 
+  c_library:
+    name: Build C library
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Cache rust cargo artifacts
+        uses: swatinem/rust-cache@v2
+
+      - name: Build C library
+        run: cargo build -p deltachat_ffi --features jsonrpc
+
+      - name: Upload C library
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.os }}-libdeltachat.a
+          path: target/debug/libdeltachat.a
+          retention-days: 1
+
+  rpc_server:
+    name: Build deltachat-rpc-server
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Cache rust cargo artifacts
+        uses: swatinem/rust-cache@v2
+
+      - name: Build deltachat-rpc-server
+        run: cargo build -p deltachat-rpc-server
+
+      - name: Upload deltachat-rpc-server
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ matrix.os }}-deltachat-rpc-server
+          path: target/debug/deltachat-rpc-server
+          retention-days: 1
+
+  python_lint:
+    name: Python lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+
+      - name: Install tox
+        run: pip install tox
+
+      - name: Lint Python bindings
+        working-directory: python
+        run: tox -e lint
+
+      - name: Lint deltachat-rpc-client
+        working-directory: deltachat-rpc-client
+        run: tox -e lint
+
+  python_tests:
+    name: Python tests
+    needs: ["c_library", "python_lint"]
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Currently used Rust version.
+          - os: ubuntu-latest
+            python: 3.11
+          - os: macos-latest
+            python: 3.11
+
+          # PyPy tests
+          - os: ubuntu-latest
+            python: pypy3.9
+          - os: macos-latest
+            python: pypy3.9
+
+          # Minimum Supported Python Version = 3.7
+          # This is the minimum version for which manylinux Python wheels are
+          # built. Test it with minimum supported Rust version.
+          - os: ubuntu-latest
+            python: 3.7
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Download libdeltachat.a
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ matrix.os }}-libdeltachat.a
+          path: target/debug
+
       - name: Install python
-        if: ${{ matrix.python }}
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
 
       - name: Install tox
-        if: ${{ matrix.python }}
         run: pip install tox
 
-      - name: Build C library
-        if: ${{ matrix.python }}
-        run: cargo build -p deltachat_ffi --features jsonrpc
-
       - name: Run python tests
-        if: ${{ matrix.python }}
         env:
           DCC_NEW_TMP_EMAIL: ${{ secrets.DCC_NEW_TMP_EMAIL }}
           DCC_RS_TARGET: debug
           DCC_RS_DEV: ${{ github.workspace }}
         working-directory: python
-        run: tox -e lint,mypy,doc,py3
+        run: tox -e mypy,doc,py
 
-      - name: Build deltachat-rpc-server
-        if: ${{ matrix.python }}
-        run: cargo build -p deltachat-rpc-server
+  aysnc_python_tests:
+    name: Async Python tests
+    needs: ["python_lint", "rpc_server"]
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Currently used Rust version.
+          - os: ubuntu-latest
+            python: 3.11
+          - os: macos-latest
+            python: 3.11
+
+          # PyPy tests
+          - os: ubuntu-latest
+            python: pypy3.9
+          - os: macos-latest
+            python: pypy3.9
+
+          # Minimum Supported Python Version = 3.7
+          # This is the minimum version for which manylinux Python wheels are
+          # built. Test it with minimum supported Rust version.
+          - os: ubuntu-latest
+            python: 3.7
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Install python
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+
+      - name: Install tox
+        run: pip install tox
+
+      - name: Download deltachat-rpc-server
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ matrix.os }}-deltachat-rpc-server
+          path: target/debug
+
+      - name: Make deltachat-rpc-server executable
+        run: chmod +x target/debug/deltachat-rpc-server
 
       - name: Add deltachat-rpc-server to path
-        if: ${{ matrix.python }}
         run: echo ${{ github.workspace }}/target/debug >> $GITHUB_PATH
 
       - name: Run deltachat-rpc-client tests
-        if: ${{ matrix.python }}
         env:
           DCC_NEW_TMP_EMAIL: ${{ secrets.DCC_NEW_TMP_EMAIL }}
         working-directory: deltachat-rpc-client
-        run: tox -e py3,lint
-
-      - name: Install pypy
-        if: ${{ matrix.python }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: "pypy${{ matrix.python }}"
-
-      - name: Run pypy tests
-        if: ${{ matrix.python }}
-        env:
-          DCC_NEW_TMP_EMAIL: ${{ secrets.DCC_NEW_TMP_EMAIL }}
-          DCC_RS_TARGET: debug
-          DCC_RS_DEV: ${{ github.workspace }}
-        working-directory: python
-        run: tox -e pypy3
+        run: tox -e py

.github/workflows/deltachat-rpc-server.yml

@@ -8,35 +8,14 @@ concurrency:
 
 on:
   workflow_dispatch:
+  release:
+    types: [published]
 
 jobs:
   # Build a version statically linked against musl libc
   # to avoid problems with glibc version incompatibility.
-  build_static_linux:
-    name: Build deltachat-rpc-server for Linux
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Setup rust target
-        run: rustup target add x86_64-unknown-linux-musl
-
-      - name: Install musl-gcc
-        run: sudo apt install musl-tools
-
-      - name: Build
-        env:
-          RUSTFLAGS: "-C link-arg=-s"
-        run: cargo build --release --target x86_64-unknown-linux-musl -p deltachat-rpc-server --features vendored
-      - name: Upload binary
-        uses: actions/upload-artifact@v3
-        with:
-          name: deltachat-rpc-server-x86_64
-          path: target/x86_64-unknown-linux-musl/release/deltachat-rpc-server
-          if-no-files-found: error
-
   build_linux:
-    name: Cross-compile deltachat-rpc-server for aarch64 and armv7 Linux
+    name: Cross-compile deltachat-rpc-server for x86_64, i686, aarch64 and armv7 Linux
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v3
@@ -44,6 +23,20 @@ jobs:
       - name: Build
         run: sh scripts/zig-rpc-server.sh
 
+      - name: Upload x86_64 binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: deltachat-rpc-server-x86_64
+          path: target/x86_64-unknown-linux-musl/release/deltachat-rpc-server
+          if-no-files-found: error
+
+      - name: Upload i686 binary
+        uses: actions/upload-artifact@v3
+        with:
+          name: deltachat-rpc-server-i686
+          path: target/i686-unknown-linux-musl/release/deltachat-rpc-server
+          if-no-files-found: error
+
       - name: Upload aarch64 binary
         uses: actions/upload-artifact@v3
         with:
@@ -58,50 +51,6 @@ jobs:
           path: target/armv7-unknown-linux-musleabihf/release/deltachat-rpc-server
           if-no-files-found: error
 
-  build_android:
-    name: Cross-compile deltachat-rpc-server for Android (armeabi-v7a, arm64-v8a, x86 and x86_64)
-    runs-on: ubuntu-22.04
-    steps:
-      - uses: actions/checkout@v3
-
-      - uses: nttld/setup-ndk@v1
-        id: setup-ndk
-        with:
-          ndk-version: r21d
-
-      - name: Build
-        env:
-          ANDROID_NDK_ROOT: ${{ steps.setup-ndk.outputs.ndk-path }}
-        run: sh scripts/android-rpc-server.sh
-
-      - name: Upload binary
-        uses: actions/upload-artifact@v3
-        with:
-          name: deltachat-rpc-server-android-armv7
-          path: target/armv7-linux-androideabi/release/deltachat-rpc-server
-          if-no-files-found: error
-
-      - name: Upload binary
-        uses: actions/upload-artifact@v3
-        with:
-          name: deltachat-rpc-server-android-aarch64
-          path: target/aarch64-linux-android/release/deltachat-rpc-server
-          if-no-files-found: error
-
-      - name: Upload binary
-        uses: actions/upload-artifact@v3
-        with:
-          name: deltachat-rpc-server-android-i686
-          path: target/i686-linux-android/release/deltachat-rpc-server
-          if-no-files-found: error
-
-      - name: Upload binary
-        uses: actions/upload-artifact@v3
-        with:
-          name: deltachat-rpc-server-android-x86_64
-          path: target/x86_64-linux-android/release/deltachat-rpc-server
-          if-no-files-found: error
-
   build_windows:
     name: Build deltachat-rpc-server for Windows
     strategy:
@@ -134,3 +83,31 @@ jobs:
           name: deltachat-rpc-server-${{ matrix.artifact }}
           path: target/${{ matrix.target}}/release/${{ matrix.path }}
           if-no-files-found: error
+
+  publish:
+    name: Upload binaries to the release
+    needs: ["build_linux", "build_windows"]
+    permissions:
+      contents: write
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Download built binaries
+        uses: "actions/download-artifact@v3"
+
+      - name: Compose dist/ directory
+        run: |
+          mkdir dist
+          for x in x86_64 i686 aarch64 armv7 win32.exe win64.exe; do
+            mv "deltachat-rpc-server-$x"/* "dist/deltachat-rpc-server-$x"
+          done
+
+      - name: List downloaded artifacts
+        run: ls -l dist/
+
+      - name: Upload binaries to the GitHub release
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+        run: |
+          gh release upload ${{ github.ref_name }} \
+            --repo ${{ github.repository }} \
+            dist/*

CHANGELOG.md

@@ -3,11 +3,131 @@
 ## Unreleased
 
 ### Changes
-- "full message view" not needed because of footers that go to contact status #4151
-- Pick up system's light/dark mode in generated message HTML #4150
-- Support non-persistent configuration with DELTACHAT_* env
-- Print deltachat-repl errors with causes. #4166
+- BREAKING: jsonrpc:
+  - `get_chatlist_items_by_entries` now takes only chatids instead of `ChatListEntries`
+  - `get_chatlist_entries` now returns `Vec<u32>` of chatids instead of `ChatListEntries`
+- JSON-RPC: add API to get reactions outside the message snapshot
+### Fixes
+- Make the bots automatically accept group chat contact requests. #4377
+
+
+## [1.114.0] - 2023-04-24
+
+### Changes
+- JSON-RPC: Use long polling instead of server-sent notifications to retrieve events.
+  This better corresponds to JSON-RPC 2.0 server-client distinction
+  and is expected to simplify writing new bindings
+  because dispatching events can be done on higher level.
+- JSON-RPC: TS: Client now has a mandatory argument whether you want to start listening for events.
+
+### Fixes
+- JSON-RPC: do not print to stdout on failure to find an account.
+
+
+## [1.113.0] - 2023-04-18
+
+### Added
+- New JSON-RPC API `can_send()`.
+- New `dc_get_next_msgs()` and `dc_wait_next_msgs()` C APIs.
+  New `get_next_msgs()` and `wait_next_msgs()` JSON-RPC API.
+  These APIs can be used by bots to get all unprocessed messages
+  in the order of their arrival and wait for them without relying on events.
+- New Python bindings API `Account.wait_next_incoming_message()`.
+- New Python bindings APIs `Message.is_from_self()` and `Message.is_from_device()`.
+
+### Changes
+- Increase MSRV to 1.65.0. #4236
+- Remove upper limit on the attachment size. #4253
+- Update rPGP to 0.10.1. #4236
+- Compress HTML emails stored in the `mime_headers` column of the database.
+- Strip BIDI characters in system messages, files, group names and contact names. #3479
+- Use release date instead of the provider database update date in `maybe_add_time_based_warnings()`.
+- Gracefully terminate `deltachat-rpc-server` on Ctrl+C (`SIGINT`), `SIGTERM` and EOF.
+- Async Python API `get_fresh_messages_in_arrival_order()` is deprecated
+  in favor of `get_next_msgs()` and `wait_next_msgs()`.
+- Remove metadata from avatars and JPEG images before sending. #4037
+- Recode PNG and other supported image formats to JPEG if they are > 500K in size. #4037
+
+### Fixes
+- Don't let blocking be bypassed using groups. #4316
+- Show a warning if quota list is empty. #4261
+- Do not reset status on other devices when sending signed reaction messages. #3692
+- Update `accounts.toml` atomically.
+- Fix python bindings README documentation on installing the bindings from source.
+- Remove confusing log line "ignoring unsolicited response Recent(…)". #3934
+
+## [1.112.8] - 2023-04-20
+
+### Changes
+- Add `get_http_response` JSON-RPC API.
+- Add C API to get HTTP responses.
+
+## [1.112.7] - 2023-04-17
+
+### Fixes
+
+- Updated `async-imap` to v0.8.0 to fix erroneous EOF detection in long IMAP responses.
+
+## [1.112.6] - 2023-04-04
+
+### Changes
+
+- Add a device message after backup transfer #4301
+
+### Fixed
+
+- Updated `iroh` from 0.4.0 to 0.4.1 to fix transfer of large accounts with many blob files.
+
+## [1.112.5] - 2023-04-02
+
+### Fixes
+
+- Run SQL database migrations after receiving a backup from the network. #4287
+
+## [1.112.4] - 2023-03-31
+
+### Fixes
+- Fix call to `auditwheel` in `scripts/run_all.sh`.
+
+## [1.112.3] - 2023-03-30
+
+### Fixes
+- `transfer::get_backup` now frees ongoing process when cancelled. #4249
+
+## [1.112.2] - 2023-03-30
+
+### Changes
+- Update iroh, remove `default-net` from `[patch.crates-io]` section.
+- transfer backup: Connect to multiple provider addresses concurrently.  This should speed up connection time significantly on the getter side.  #4240
+- Make sure BackupProvider is cancelled on drop (or `dc_backup_provider_unref`).  The BackupProvider will now always finish with an IMEX event of 1000 or 0, previously it would sometimes finished with 1000 (success) when it really was 0 (failure). #4242
+
+### Fixes
+- Do not return media from trashed messages in the "All media" view. #4247
+
+## [1.112.1] - 2023-03-27
+
+### Changes
+- Add support for `--version` argument to `deltachat-rpc-server`. #4224
+  It can be used to check the installed version without starting the server.
+
+### Fixes
+- deltachat-rpc-client: fix bug in `Chat.send_message()`: invalid `MessageData` field `quotedMsg` instead of `quotedMsgId`
+- `receive_imf`: Mark special messages as seen. Exactly: delivery reports, webxdc status updates. #4230
+
+
+## [1.112.0] - 2023-03-23
+
+### Changes
 - Increase MSRV to 1.64. #4167
+- Core takes care of stopping and re-starting IO itself where needed,
+  e.g. during backup creation.
+  It is no longer needed to call `dc_stop_io()`.
+  `dc_start_io()` can now be called at any time without harm. #4138
+- Pick up system's light/dark mode in generated message HTML. #4150
+- More accurate `maybe_add_bcc_self` device message text. #4175
+- "Full message view" not needed because of footers that go to contact status. #4151
+- Support non-persistent configuration with `DELTACHAT_*` env. #4154
+- Print deltachat-repl errors with causes. #4166
 
 ### Fixes
 - Fix segmentation fault if `dc_context_unref()` is called during
@@ -16,9 +136,15 @@
   during handling the JSON-RPC request. #4153
 - Delete expired messages using multiple SQL requests. #4158
 - Do not emit "Failed to run incremental vacuum" warnings on success. #4160
+- Ability to send backup over network and QR code to setup second device #4007
+- Disable buffering during STARTTLS setup. #4190
+- Add `DC_EVENT_IMAP_INBOX_IDLE` event to wait until the account
+  is ready for testing.
+  It is used to fix race condition between fetching
+  existing messages and starting the test. #4208
 
 
-## 1.111.0
+## [1.111.0] - 2023-03-05
 
 ### Changes
 - Make smeared timestamp generation non-async. #4075
@@ -147,7 +273,6 @@
 - Do not treat invalid email addresses as an exception #3942
 - Add timeouts to HTTP requests #3948
 
-
 ## 1.105.0
 
 ### Changes
@@ -233,7 +358,6 @@
 - Disable read timeout during IMAP IDLE #3826
 - Bots automatically accept mailing lists #3831
 
-
 ## 1.102.0
 
 ### Changes
@@ -2307,3 +2431,16 @@
 For a full list of changes, please see our closed Pull Requests: 
 
 https://github.com/deltachat/deltachat-core-rust/pulls?q=is%3Apr+is%3Aclosed
+
+[1.111.0]: https://github.com/deltachat/deltachat-core-rust/compare/v1.110.0...v1.111.0
+[1.112.0]: https://github.com/deltachat/deltachat-core-rust/compare/v1.111.0...v1.112.0
+[1.112.1]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.0...v1.112.1
+[1.112.2]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.1...v1.112.2
+[1.112.3]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.2...v1.112.3
+[1.112.4]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.3...v1.112.4
+[1.112.5]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.4...v1.112.5
+[1.112.6]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.5...v1.112.6
+[1.112.7]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.6...v1.112.7
+[1.112.8]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.7...v1.112.8
+[1.113.0]: https://github.com/deltachat/deltachat-core-rust/compare/v1.112.8...v1.113.0
+[1.114.0]: https://github.com/deltachat/deltachat-core-rust/compare/v1.113.0...v1.114.0

Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 name = "deltachat"
-version = "1.111.0"
+version = "1.114.0"
 edition = "2021"
 license = "MPL-2.0"
-rust-version = "1.64"
+rust-version = "1.65"
 
 [profile.dev]
 debug = 0
@@ -24,6 +24,10 @@ lto = true
 panic = 'abort'
 opt-level = "z"
 
+[patch.crates-io]
+quinn-udp = { git = "https://github.com/quinn-rs/quinn", branch="main" }
+quinn-proto = { git = "https://github.com/quinn-rs/quinn", branch="main" }
+
 [dependencies]
 deltachat_derive = { path = "./deltachat_derive" }
 format-flowed = { path = "./format-flowed" }
@@ -31,41 +35,43 @@ ratelimit = { path = "./deltachat-ratelimit" }
 
 anyhow = "1"
 async-channel = "1.8.0"
-async-imap = { git = "https://github.com/async-email/async-imap", branch = "master", default-features = false, features = ["runtime-tokio"] }
+async-imap = { version = "0.8.0", default-features = false, features = ["runtime-tokio"] }
 async-native-tls = { version = "0.5", default-features = false, features = ["runtime-tokio"] }
 async-smtp = { version = "0.9", default-features = false, features = ["runtime-tokio"] }
-async_zip = { version = "0.0.9", default-features = false, features = ["deflate"] }
+async_zip = { version = "0.0.12", default-features = false, features = ["deflate", "fs"] }
 backtrace = "0.3"
 base64 = "0.21"
-bitflags = "1.3"
+brotli = "3.3"
 chrono = { version = "0.4", default-features=false, features = ["clock", "std"] }
 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"
 fast-socks5 = "0.8"
 futures = "0.3"
-futures-lite = "1.12.0"
+futures-lite = "1.13.0"
 hex = "0.4.0"
 humansize = "2"
-image = { version = "0.24.5", default-features=false, features = ["gif", "jpeg", "ico", "png", "pnm", "webp", "bmp"] }
+image = { version = "0.24.6", default-features=false, features = ["gif", "jpeg", "ico", "png", "pnm", "webp", "bmp"] }
+iroh = { version = "0.4.1", default-features = false }
 kamadak-exif = "0.5"
 lettre_email = { git = "https://github.com/deltachat/lettre", branch = "master" }
 libc = "0.2"
 mailparse = "0.14"
+mime = "0.3.17"
 num_cpus = "1.15"
 num-derive = "0.3"
 num-traits = "0.2"
 once_cell = "1.17.0"
 percent-encoding = "2.2"
 parking_lot = "0.12"
-pgp = { version = "0.9", default-features = false }
+pgp = { version = "0.10", default-features = false }
 pretty_env_logger = { version = "0.4", optional = true }
 qrcodegen = "1.7.0"
-quick-xml = "0.27"
+quick-xml = "0.28"
 rand = "0.8"
 regex = "1.7"
-reqwest = { version = "0.11.14", features = ["json"] }
-rusqlite = { version = "0.28", features = ["sqlcipher"] }
+reqwest = { version = "0.11.17", features = ["json"] }
+rusqlite = { version = "0.29", features = ["sqlcipher"] }
 rust-hsluv = "0.1"
 sanitize-filename = "0.4"
 serde_json = "1.0"
@@ -78,10 +84,11 @@ strum_macros = "0.24"
 tagger = "4.3.4"
 textwrap = "0.16.0"
 thiserror = "1"
-tokio-io-timeout = "1.2.0"
-tokio-stream = { version = "0.1.11", features = ["fs"] }
-tokio-tar = { version = "0.3" } # TODO: integrate tokio into async-tar
 tokio = { version = "1", features = ["fs", "rt-multi-thread", "macros"] }
+tokio-io-timeout = "1.2.0"
+tokio-stream = { version = "0.1.14", features = ["fs"] }
+tokio-tar = { version = "0.3" } # TODO: integrate tokio into async-tar
+tokio-util = "0.7.8"
 toml = "0.7"
 trust-dns-resolver = "0.22"
 url = "2"
@@ -90,11 +97,12 @@ uuid = { version = "1", features = ["serde", "v4"] }
 [dev-dependencies]
 ansi_term = "0.12.0"
 criterion = { version = "0.4.0", features = ["async_tokio"] }
-futures-lite = "1.12"
+futures-lite = "1.13"
 log = "0.4"
 pretty_env_logger = "0.4"
 proptest = { version = "1", default-features = false, features = ["std"] }
 tempfile = "3"
+testdir = "0.7.3"
 tokio = { version = "1", features = ["parking_lot", "rt-multi-thread", "macros"] }
 
 [workspace]

cliff.toml

@@ -0,0 +1,75 @@
+# configuration file for git-cliff
+# see https://github.com/orhun/git-cliff#configuration-file
+
+
+[git]
+# parse the commits based on https://www.conventionalcommits.org
+conventional_commits = true
+# filter out the commits that are not conventional
+filter_unconventional = true
+# process each line of a commit as an individual commit
+split_commits = false
+# regex for preprocessing the commit messages
+commit_preprocessors = [
+    { pattern = '\((\w+\s)?#([0-9]+)\)', replace = "([#${2}](https://github.com/deltachat/deltachat-core-rust/PR/${2}))"}, # replace pull request / issue numbers
+]
+# regex for parsing and grouping commits
+commit_parsers = [
+    { message = "^feat", group = "Features / Changes"},
+    { message = "^fix", group = "Fixes"},
+    { message = "^api", group = "API-Changes" },
+    { message = "^refactor", group = "Refactor"},
+    { message = "^perf", group = "Performance"},
+    { message = "^test", group = "Tests"},
+    { message = "^style", group = "Styling"},
+    { message = "^chore\\(release\\): prepare for", skip = true},
+    { message = "^chore", group = "Miscellaneous Tasks"},
+#    { body = ".*security", group = "Security"},
+]
+# protect breaking changes from being skipped due to matching a skipping commit_parser
+protect_breaking_commits = true
+# filter out the commits that are not matched by commit parsers
+filter_commits = true
+# glob pattern for matching git tags
+tag_pattern = "v[0-9]*"
+# regex for skipping tags
+#skip_tags = "v0.1.0-beta.1"
+# regex for ignoring tags
+ignore_tags = ""
+# sort the tags topologically
+topo_order = false
+# sort the commits inside sections by oldest/newest order
+sort_commits = "oldest"
+# limit the number of commits included in the changelog.
+# limit_commits = 42
+
+
+[changelog]
+# changelog header
+header = """
+# Changelog\n
+"""
+# template for the changelog body
+# https://tera.netlify.app/docs/#introduction
+body = """
+{% if version %}\
+    ## [{{ version | trim_start_matches(pat="v") }}] - {{ timestamp | date(format="%Y-%m-%d") }}
+{% else %}\
+    ## [unreleased]
+{% endif %}\
+{% for group, commits in commits | group_by(attribute="group") %}
+    ### {{ group | upper_first }}
+    {% for commit in commits %}
+        - {% if commit.breaking %}[**breaking**] {% endif %}{{ commit.message | upper_first }}\
+	{% for footer in commit.footers %}{% if 'BREAKING CHANGE' in footer.token %}
+	  {% raw %}  {% endraw %}- {{ footer.value }}\
+	{% endif %}{% endfor %}\
+    {% endfor %}
+{% endfor %}\n
+"""
+# remove the leading and trailing whitespace from the template
+trim = true
+# changelog footer
+footer = """
+<!-- generated by git-cliff -->
+"""

deltachat-ffi/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.111.0"
+version = "1.114.0"
 description = "Deltachat FFI"
 edition = "2018"
 readme = "README.md"
@@ -17,13 +17,13 @@ crate-type = ["cdylib", "staticlib"]
 deltachat = { path = "../", default-features = false }
 deltachat-jsonrpc = { path = "../deltachat-jsonrpc", optional = true }
 libc = "0.2"
-human-panic = "1"
+human-panic = { version = "1", default-features = false }
 num-traits = "0.2"
 serde_json = "1.0"
 tokio = { version = "1", features = ["rt-multi-thread"] }
 anyhow = "1"
 thiserror = "1"
-rand = "0.7"
+rand = "0.8"
 once_cell = "1.17.0"
 
 [features]

deltachat-ffi/deltachat.h

@@ -24,6 +24,8 @@ typedef struct _dc_provider  dc_provider_t;
 typedef struct _dc_event     dc_event_t;
 typedef struct _dc_event_emitter dc_event_emitter_t;
 typedef struct _dc_jsonrpc_instance dc_jsonrpc_instance_t;
+typedef struct _dc_backup_provider dc_backup_provider_t;
+typedef struct _dc_http_response dc_http_response_t;
 
 // Alias for backwards compatibility, use dc_event_emitter_t instead.
 typedef struct _dc_event_emitter dc_accounts_event_emitter_t;
@@ -71,7 +73,6 @@ typedef struct _dc_event_emitter dc_accounts_event_emitter_t;
  *
  * The example above uses "pthreads",
  * however, you can also use anything else for thread handling.
- * All deltachat-core functions, unless stated otherwise, are thread-safe.
  *
  * Now you can **configure the context:**
  *
@@ -141,6 +142,72 @@ typedef struct _dc_event_emitter dc_accounts_event_emitter_t;
  * ~~~
  *
  *
+ * ## Thread safety
+ *
+ * All deltachat-core functions, unless stated otherwise, are thread-safe.
+ * In particular, it is safe to pass the same dc_context_t pointer
+ * to multiple functions running concurrently in different threads.
+ *
+ * All the functions are guaranteed not to use the reference passed to them
+ * after returning. If the function spawns a long-running process,
+ * such as dc_configure() or dc_imex(), it will ensure that the objects
+ * passed to them are not deallocated as long as they are needed.
+ * For example, it is safe to call dc_imex(context, ...) and
+ * call dc_context_unref(context) immediately after return from dc_imex().
+ * It is however **not safe** to call dc_context_unref(context) concurrently
+ * until dc_imex() returns, because dc_imex() may have not increased
+ * the reference count of dc_context_t yet.
+ *
+ * This means that the context may be still in use after
+ * dc_context_unref() call.
+ * For example, it is possible to start the import/export process,
+ * call dc_context_unref(context) immediately after
+ * and observe #DC_EVENT_IMEX_PROGRESS events via the event emitter.
+ * Once dc_get_next_event() returns NULL,
+ * it is safe to terminate the application.
+ *
+ * It is recommended to create dc_context_t in the main thread
+ * and only call dc_context_unref() once other threads that may use it,
+ * such as the event loop thread, are terminated.
+ * Common mistake is to use dc_context_unref() as a way
+ * to cause dc_get_next_event() return NULL and terminate event loop this way.
+ * If event loop thread is inside a function taking dc_context_t
+ * as an argument at the moment dc_context_unref() is called on the main thread,
+ * the behavior is undefined.
+ *
+ * Recommended way to safely terminate event loop
+ * and shutdown the application is
+ * to use a boolean variable
+ * indicating that the event loop should stop
+ * and check it in the event loop thread
+ * every time before calling dc_get_next_event().
+ * To terminate the event loop, main thread should:
+ * 1. Notify background threads,
+ *    such as event loop (blocking in dc_get_next_event())
+ *    and message processing loop (blocking in dc_wait_next_msgs()),
+ *    that they should terminate by atomically setting the
+ *    boolean flag in the memory
+ *    shared between the main thread and background loop threads.
+ * 2. Call dc_stop_io() or dc_accounts_stop_io(), depending
+ *    on whether a single account or account manager is used.
+ *    Stopping I/O is guaranteed to emit at least one event
+ *    and interrupt the event loop even if it was blocked on dc_get_next_event().
+ *    Stopping I/O is guaranteed to interrupt a single dc_wait_next_msgs().
+ * 3. Wait until the event loop thread notices the flag,
+ *    exits the event loop and terminates.
+ * 4. Call dc_context_unref() or dc_accounts_unref().
+ * 5. Keep calling dc_get_next_event() in a loop until it returns NULL,
+ *    indicating that the contexts are deallocated.
+ * 6. Terminate the application.
+ *
+ * When using C API via FFI in runtimes that use automatic memory management,
+ * such as CPython, JVM or Node.js, take care to ensure the correct
+ * shutdown order and avoid calling dc_context_unref() or dc_accounts_unref()
+ * on the objects still in use in other threads,
+ * e.g. by keeping a reference to the wrapper object.
+ * The details depend on the runtime being used.
+ *
+ *
  * ## Class reference
  *
  * For a class reference, see the "Classes" link atop.
@@ -396,6 +463,16 @@ char*           dc_get_blobdir               (const dc_context_t* context);
  *                    Prevents adding the "Device messages" and "Saved messages" chats,
  *                    adds Auto-Submitted header to outgoing messages
  *                    and accepts contact requests automatically (calling dc_accept_chat() is not needed for bots).
+ * - `last_msg_id` = database ID of the last message processed by the bot.
+ *                   This ID and IDs below it are guaranteed not to be returned
+ *                   by dc_get_next_msgs() and dc_wait_next_msgs().
+ *                   The value is updated automatically
+ *                   when dc_markseen_msgs() is called,
+ *                   but the bot can also set it manually if it processed
+ *                   the message but does not want to mark it as seen.
+ *                   For most bots calling `dc_markseen_msgs()` is the
+ *                   recommended way to update this value
+ *                   even for self-sent messages.
  * - `fetch_existing_msgs` = 1=fetch most recent existing messages on configure (default),
  *                    0=do not fetch existing messages on configure.
  *                    In both cases, existing recipients are added to the contact database.
@@ -1282,6 +1359,56 @@ int             dc_estimate_deletion_cnt    (dc_context_t* context, int from_ser
 dc_array_t*     dc_get_fresh_msgs            (dc_context_t* context);
 
 
+/**
+ * Returns the message IDs of all messages of any chat
+ * with a database ID higher than `last_msg_id` config value.
+ *
+ * This function is intended for use by bots.
+ * Self-sent messages, device messages,
+ * messages from contact requests
+ * and muted chats are included,
+ * but messages from explicitly blocked contacts
+ * and chats are ignored.
+ *
+ * This function may be called as a part of event loop
+ * triggered by DC_EVENT_INCOMING_MSG if you are only interested
+ * in the incoming messages.
+ * Otherwise use a separate message processing loop
+ * calling dc_wait_next_msgs() in a separate thread.
+ *
+ * @memberof dc_context_t
+ * @param context The context object as returned from dc_context_new().
+ * @return An array of message IDs, must be dc_array_unref()'d when no longer used.
+ *     On errors, the list is empty. NULL is never returned.
+ */
+dc_array_t*     dc_get_next_msgs             (dc_context_t* context);
+
+
+/**
+ * Waits for notification of new messages
+ * and returns an array of new message IDs.
+ * See the documentation for dc_get_next_msgs()
+ * for the details of return value.
+ *
+ * This function waits for internal notification of
+ * a new message in the database and returns afterwards.
+ * Notification is also sent when I/O is started
+ * to allow processing new messages
+ * and when I/O is stopped using dc_stop_io() or dc_accounts_stop_io()
+ * to allow for manual interruption of the message processing loop.
+ * The function may return an empty array if there are
+ * no messages after notification,
+ * which may happen on start or if the message is quickly deleted
+ * after adding it to the database.
+ *
+ * @memberof dc_context_t
+ * @param context The context object as returned from dc_context_new().
+ * @return An array of message IDs, must be dc_array_unref()'d when no longer used.
+ *     On errors, the list is empty. NULL is never returned.
+ */
+dc_array_t*     dc_wait_next_msgs            (dc_context_t* context);
+
+
 /**
  * Mark all messages in a chat as _noticed_.
  * _Noticed_ messages are no longer _fresh_ and do not count as being unseen
@@ -1881,6 +2008,11 @@ int             dc_resend_msgs               (dc_context_t* context, const uint3
  * Moreover, timer is started for incoming ephemeral messages.
  * This also happens for contact requests chats.
  *
+ * This function updates last_msg_id configuration value
+ * to the maximum of the current value and IDs passed to this function.
+ * Bots which mark messages as seen can rely on this side effect
+ * to avoid updating last_msg_id value manually.
+ *
  * One #DC_EVENT_MSGS_NOTICED event is emitted per modified chat.
  *
  * @memberof dc_context_t
@@ -2100,8 +2232,7 @@ dc_contact_t*   dc_get_contact               (dc_context_t* context, uint32_t co
 
 /**
  * Import/export things.
- * During backup import/export IO must not be started,
- * if needed stop IO using dc_accounts_stop_io() or dc_stop_io() first.
+ *
  * What to do is defined by the _what_ parameter which may be one of the following:
  *
  * - **DC_IMEX_EXPORT_BACKUP** (11) - Export a backup to the directory given as `param1`
@@ -2295,6 +2426,7 @@ void            dc_stop_ongoing_process      (dc_context_t* context);
 #define         DC_QR_FPR_MISMATCH           220 // id=contact
 #define         DC_QR_FPR_WITHOUT_ADDR       230 // test1=formatted fingerprint
 #define         DC_QR_ACCOUNT                250 // text1=domain
+#define         DC_QR_BACKUP                 251
 #define         DC_QR_WEBRTC_INSTANCE        260 // text1=domain, text2=instance pattern
 #define         DC_QR_ADDR                   320 // id=contact
 #define         DC_QR_TEXT                   330 // text1=text
@@ -2320,7 +2452,7 @@ void            dc_stop_ongoing_process      (dc_context_t* context);
  *   ask whether to verify the contact;
  *   if so, start the protocol with dc_join_securejoin().
  *
- * - DC_QR_ASK_VERIFYGROUP withdc_lot_t::text1=Group name:
+ * - DC_QR_ASK_VERIFYGROUP with dc_lot_t::text1=Group name:
  *   ask whether to join the group;
  *   if so, start the protocol with dc_join_securejoin().
  *
@@ -2340,6 +2472,10 @@ void            dc_stop_ongoing_process      (dc_context_t* context);
  *   ask the user if they want to create an account on the given domain,
  *   if so, call dc_set_config_from_qr() and then dc_configure().
  *
+ * - DC_QR_BACKUP:
+ *   ask the user if they want to set up a new device.
+ *   If so, pass the qr-code to dc_receive_backup().
+ *
  * - DC_QR_WEBRTC_INSTANCE with dc_lot_t::text1=domain:
  *   ask the user if they want to use the given service for video chats;
  *   if so, call dc_set_config_from_qr().
@@ -2630,6 +2766,123 @@ char* dc_get_last_error (dc_context_t* context);
 void dc_str_unref (char* str);
 
 
+/**
+ * @class dc_backup_provider_t
+ *
+ * Set up another device.
+ */
+
+/**
+ * Creates an object for sending a backup to another device.
+ *
+ * The backup is sent to through a peer-to-peer channel which is bootstrapped
+ * by a QR-code.  The backup contains the entire state of the account
+ * including credentials.  This can be used to setup a new device.
+ *
+ * This is a blocking call as some preparations are made like e.g. exporting
+ * the database.  Once this function returns, the backup is being offered to
+ * remote devices.  To wait until one device received the backup, use
+ * dc_backup_provider_wait().  Alternatively abort the operation using
+ * dc_stop_ongoing_process().
+ *
+ * During execution of the job #DC_EVENT_IMEX_PROGRESS is sent out to indicate
+ * state and progress.
+ *
+ * @memberof dc_backup_provider_t
+ * @param context The context.
+ * @return Opaque object for sending the backup.
+ *    On errors, NULL is returned and dc_get_last_error() returns an error that
+ *    should be shown to the user.
+ */
+dc_backup_provider_t* dc_backup_provider_new (dc_context_t* context);
+
+
+/**
+ * Returns the QR code text that will offer the backup to other devices.
+ *
+ * The QR code contains a ticket which will validate the backup and provide
+ * authentication for both the provider and the recipient.
+ *
+ * The scanning device should call the scanned text to dc_check_qr().  If
+ * dc_check_qr() returns DC_QR_BACKUP, the backup transfer can be started using
+ * dc_get_backup().
+ *
+ * @memberof dc_backup_provider_t
+ * @param backup_provider The backup provider object as created by
+ *    dc_backup_provider_new().
+ * @return The text that should be put in the QR code.
+ *    On errors an empty string is returned, NULL is never returned.
+ *    the returned string must be released using dc_str_unref() after usage.
+ */
+char* dc_backup_provider_get_qr (const dc_backup_provider_t* backup_provider);
+
+
+/**
+ * Returns the QR code SVG image that will offer the backup to other devices.
+ *
+ * This works like dc_backup_provider_qr() but returns the text of a rendered
+ * SVG image containing the QR code.
+ *
+ * @memberof dc_backup_provider_t
+ * @param backup_provider The backup provider object as created by
+ *    dc_backup_provider_new().
+ * @return The QR code rendered as SVG.
+ *    On errors an empty string is returned, NULL is never returned.
+ *    the returned string must be released using dc_str_unref() after usage.
+ */
+char* dc_backup_provider_get_qr_svg (const dc_backup_provider_t* backup_provider);
+
+/**
+ * Waits for the sending to finish.
+ *
+ * This is a blocking call and should only be called once.
+ *
+ * @memberof dc_backup_provider_t
+ * @param backup_provider The backup provider object as created by
+ *    dc_backup_provider_new().  If NULL is given nothing is done.
+ */
+void dc_backup_provider_wait (dc_backup_provider_t* backup_provider);
+
+/**
+ * Frees a dc_backup_provider_t object.
+ *
+ * If the provider has not yet finished, as indicated by
+ * dc_backup_provider_wait() or the #DC_EVENT_IMEX_PROGRESS event with value
+ * of 0 (failed) or 1000 (succeeded), this will also abort any in-progress
+ * transfer.  If this aborts the provider a #DC_EVENT_IMEX_PROGRESS event with
+ * value 0 (failed) will be emitted.
+ *
+ * @memberof dc_backup_provider_t
+ * @param backup_provider The backup provider object as created by
+ *    dc_backup_provider_new().
+ */
+void dc_backup_provider_unref (dc_backup_provider_t* backup_provider);
+
+/**
+ * Gets a backup offered by a dc_backup_provider_t object on another device.
+ *
+ * This function is called on a device that scanned the QR code offered by
+ * dc_backup_sender_qr() or dc_backup_sender_qr_svg().  Typically this is a
+ * different device than that which provides the backup.
+ *
+ * This call will block while the backup is being transferred and only
+ * complete on success or failure.  Use dc_stop_ongoing_process() to abort it
+ * early.
+ *
+ * During execution of the job #DC_EVENT_IMEX_PROGRESS is sent out to indicate
+ * state and progress.  The process is finished when the event emits either 0
+ * or 1000, 0 means it failed and 1000 means it succeeded.  These events are
+ * for showing progress and informational only, success and failure is also
+ * shown in the return code of this function.
+ *
+ * @memberof dc_context_t
+ * @param context The context.
+ * @param qr The qr code text, dc_check_qr() must have returned DC_QR_BACKUP
+ *    on this text.
+ * @return 0=failure, 1=success.
+ */
+int dc_receive_backup (dc_context_t* context, const char* qr);
+
 /**
  * @class dc_accounts_t
  *
@@ -4875,6 +5128,72 @@ int             dc_provider_get_status                (const dc_provider_t* prov
 void            dc_provider_unref                     (dc_provider_t* provider);
 
 
+/**
+ * Return an HTTP(S) GET response.
+ * This function can be used to download remote content for HTML emails.
+ *
+ * @memberof dc_context_t
+ * @param context The context object to take proxy settings from.
+ * @param url HTTP or HTTPS URL.
+ * @return The response must be released using dc_http_response_unref() after usage.
+ *     NULL is returned on errors.
+ */
+dc_http_response_t*     dc_get_http_response      (const dc_context_t* context, const char* url);
+
+
+/**
+ * @class dc_http_response_t
+ *
+ * An object containing an HTTP(S) GET response.
+ * Created by dc_get_http_response().
+ */
+
+
+/**
+ * Returns HTTP response MIME type as a string, e.g. "text/plain" or "text/html".
+ *
+ * @memberof dc_http_response_t
+ * @param response HTTP response as returned by dc_get_http_response().
+ * @return The string which must be released using dc_str_unref() after usage. May be NULL.
+ */
+char*                   dc_http_response_get_mimetype (const dc_http_response_t* response);
+
+/**
+ * Returns HTTP response encoding, e.g. "utf-8".
+ *
+ * @memberof dc_http_response_t
+ * @param response HTTP response as returned by dc_get_http_response().
+ * @return The string which must be released using dc_str_unref() after usage. May be NULL.
+ */
+char*                   dc_http_response_get_encoding (const dc_http_response_t* response);
+
+/**
+ * Returns HTTP response contents.
+ *
+ * @memberof dc_http_response_t
+ * @param response HTTP response as returned by dc_get_http_response().
+ * @return The blob which must be released using dc_str_unref() after usage. NULL is never returned.
+ */
+uint8_t*                dc_http_response_get_blob     (const dc_http_response_t* response);
+
+/**
+ * Returns HTTP response content size.
+ *
+ * @memberof dc_http_response_t
+ * @param response HTTP response as returned by dc_get_http_response().
+ * @return The blob size.
+ */
+size_t                  dc_http_response_get_size     (const dc_http_response_t* response);
+
+/**
+ * Free an HTTP response object.
+ *
+ * @memberof dc_http_response_t
+ * @param response HTTP response as returned by dc_get_http_response().
+ */
+void                    dc_http_response_unref        (const dc_http_response_t* response);
+
+
 /**
  * @class dc_lot_t
  *
@@ -5352,7 +5671,6 @@ void            dc_reactions_unref       (dc_reactions_t* reactions);
  */
 
 
-
 /**
  * @class dc_jsonrpc_instance_t
  *
@@ -5589,6 +5907,14 @@ void dc_event_unref(dc_event_t* event);
  */
 #define DC_EVENT_IMAP_MESSAGE_MOVED   105
 
+/**
+ * Emitted before going into IDLE on the Inbox folder.
+ *
+ * @param data1 0
+ * @param data2 0
+ */
+#define DC_EVENT_IMAP_INBOX_IDLE 106
+
 /**
  * Emitted when a new blob file was successfully written
  *
@@ -6874,6 +7200,16 @@ void dc_event_unref(dc_event_t* event);
 /// `%1$s` will be replaced by name and address of the contact.
 #define DC_STR_PROTECTION_DISABLED_BY_OTHER 161
 
+/// "Scan to set up second device for %1$s"
+///
+/// `%1$s` will be replaced by name and address of the account.
+#define DC_STR_BACKUP_TRANSFER_QR 162
+
+/// "Account transferred to your second device."
+///
+/// Used as a device message after a successful backup transfer.
+#define DC_STR_BACKUP_TRANSFER_MSG_BODY 163
+
 /**
  * @}
  */

deltachat-ffi/src/lib.rs

@@ -28,9 +28,11 @@ use deltachat::constants::DC_MSG_ID_LAST_SPECIAL;
 use deltachat::contact::{Contact, ContactId, Origin};
 use deltachat::context::Context;
 use deltachat::ephemeral::Timer as EphemeralTimer;
+use deltachat::imex::BackupProvider;
 use deltachat::key::DcKey;
 use deltachat::message::MsgId;
-use deltachat::qr_code_generator::get_securejoin_qr_svg;
+use deltachat::net::read_url_blob;
+use deltachat::qr_code_generator::{generate_backup_qr, get_securejoin_qr_svg};
 use deltachat::reaction::{get_msg_reactions, send_reaction, Reactions};
 use deltachat::stock_str::StockMessage;
 use deltachat::stock_str::StockStrings;
@@ -159,7 +161,8 @@ pub unsafe extern "C" fn dc_context_open(
     let ctx = &*context;
     let passphrase = to_string_lossy(passphrase);
     block_on(ctx.open(passphrase))
-        .log_err(ctx, "dc_context_open() failed")
+        .context("dc_context_open() failed")
+        .log_err(ctx)
         .map(|b| b as libc::c_int)
         .unwrap_or(0)
 }
@@ -215,16 +218,18 @@ pub unsafe extern "C" fn dc_set_config(
         if key.starts_with("ui.") {
             ctx.set_ui_config(&key, value.as_deref())
                 .await
-                .with_context(|| format!("Can't set {key} to {value:?}"))
-                .log_err(ctx, "dc_set_config() failed")
+                .with_context(|| format!("dc_set_config failed: Can't set {key} to {value:?}"))
+                .log_err(ctx)
                 .is_ok() as libc::c_int
         } else {
             match config::Config::from_str(&key) {
                 Ok(key) => ctx
                     .set_config(key, value.as_deref())
                     .await
-                    .with_context(|| format!("Can't set {key} to {value:?}"))
-                    .log_err(ctx, "dc_set_config() failed")
+                    .with_context(|| {
+                        format!("dc_set_config() failed: Can't set {key} to {value:?}")
+                    })
+                    .log_err(ctx)
                     .is_ok() as libc::c_int,
                 Err(_) => {
                     warn!(ctx, "dc_set_config(): invalid key");
@@ -252,7 +257,8 @@ pub unsafe extern "C" fn dc_get_config(
         if key.starts_with("ui.") {
             ctx.get_ui_config(&key)
                 .await
-                .log_err(ctx, "Can't get ui-config")
+                .context("Can't get ui-config")
+                .log_err(ctx)
                 .unwrap_or_default()
                 .unwrap_or_default()
                 .strdup()
@@ -261,7 +267,8 @@ pub unsafe extern "C" fn dc_get_config(
                 Ok(key) => ctx
                     .get_config(key)
                     .await
-                    .log_err(ctx, "Can't get config")
+                    .context("Can't get config")
+                    .log_err(ctx)
                     .unwrap_or_default()
                     .unwrap_or_default()
                     .strdup(),
@@ -413,7 +420,8 @@ pub unsafe extern "C" fn dc_get_oauth2_url(
     block_on(async move {
         match oauth2::get_oauth2_url(ctx, &addr, &redirect)
             .await
-            .log_err(ctx, "dc_get_oauth2_url failed")
+            .context("dc_get_oauth2_url failed")
+            .log_err(ctx)
         {
             Ok(Some(res)) => res.strdup(),
             Ok(None) | Err(_) => ptr::null_mut(),
@@ -422,7 +430,12 @@ pub unsafe extern "C" fn dc_get_oauth2_url(
 }
 
 fn spawn_configure(ctx: Context) {
-    spawn(async move { ctx.configure().await.log_err(&ctx, "Configure failed") });
+    spawn(async move {
+        ctx.configure()
+            .await
+            .context("Configure failed")
+            .log_err(&ctx)
+    });
 }
 
 #[no_mangle]
@@ -447,7 +460,8 @@ pub unsafe extern "C" fn dc_is_configured(context: *mut dc_context_t) -> libc::c
     block_on(async move {
         ctx.is_configured()
             .await
-            .log_err(ctx, "failed to get configured state")
+            .context("failed to get configured state")
+            .log_err(ctx)
             .unwrap_or_default() as libc::c_int
     })
 }
@@ -499,6 +513,7 @@ pub unsafe extern "C" fn dc_event_get_id(event: *mut dc_event_t) -> libc::c_int
         EventType::SmtpMessageSent(_) => 103,
         EventType::ImapMessageDeleted(_) => 104,
         EventType::ImapMessageMoved(_) => 105,
+        EventType::ImapInboxIdle => 106,
         EventType::NewBlobFile(_) => 150,
         EventType::DeletedBlobFile(_) => 151,
         EventType::Warning(_) => 300,
@@ -543,6 +558,7 @@ pub unsafe extern "C" fn dc_event_get_data1_int(event: *mut dc_event_t) -> libc:
         | EventType::SmtpMessageSent(_)
         | EventType::ImapMessageDeleted(_)
         | EventType::ImapMessageMoved(_)
+        | EventType::ImapInboxIdle
         | EventType::NewBlobFile(_)
         | EventType::DeletedBlobFile(_)
         | EventType::Warning(_)
@@ -593,6 +609,7 @@ pub unsafe extern "C" fn dc_event_get_data2_int(event: *mut dc_event_t) -> libc:
         | EventType::SmtpMessageSent(_)
         | EventType::ImapMessageDeleted(_)
         | EventType::ImapMessageMoved(_)
+        | EventType::ImapInboxIdle
         | EventType::NewBlobFile(_)
         | EventType::DeletedBlobFile(_)
         | EventType::Warning(_)
@@ -652,6 +669,7 @@ pub unsafe extern "C" fn dc_event_get_data2_str(event: *mut dc_event_t) -> *mut
         EventType::MsgsChanged { .. }
         | EventType::ReactionsChanged { .. }
         | EventType::IncomingMsg { .. }
+        | EventType::ImapInboxIdle
         | EventType::MsgsNoticed(_)
         | EventType::MsgDelivered { .. }
         | EventType::MsgFailed { .. }
@@ -785,7 +803,8 @@ pub unsafe extern "C" fn dc_preconfigure_keypair(
         key::store_self_keypair(ctx, &keypair, key::KeyPairUse::Default).await?;
         Ok::<_, anyhow::Error>(1)
     })
-    .log_err(ctx, "Failed to save keypair")
+    .context("Failed to save keypair")
+    .log_err(ctx)
     .unwrap_or(0)
 }
 
@@ -812,7 +831,8 @@ pub unsafe extern "C" fn dc_get_chatlist(
     block_on(async move {
         match chatlist::Chatlist::try_load(ctx, flags as usize, qs.as_deref(), qi)
             .await
-            .log_err(ctx, "Failed to get chatlist")
+            .context("Failed to get chatlist")
+            .log_err(ctx)
         {
             Ok(list) => {
                 let ffi_list = ChatlistWrapper { context, list };
@@ -837,7 +857,8 @@ pub unsafe extern "C" fn dc_create_chat_by_contact_id(
     block_on(async move {
         ChatId::create_for_contact(ctx, ContactId::new(contact_id))
             .await
-            .log_err(ctx, "Failed to create chat from contact_id")
+            .context("Failed to create chat from contact_id")
+            .log_err(ctx)
             .map(|id| id.to_u32())
             .unwrap_or(0)
     })
@@ -857,7 +878,8 @@ pub unsafe extern "C" fn dc_get_chat_id_by_contact_id(
     block_on(async move {
         ChatId::lookup_by_contact(ctx, ContactId::new(contact_id))
             .await
-            .log_err(ctx, "Failed to get chat for contact_id")
+            .context("Failed to get chat for contact_id")
+            .log_err(ctx)
             .unwrap_or_default() // unwraps the Result
             .map(|id| id.to_u32())
             .unwrap_or(0) // unwraps the Option
@@ -999,7 +1021,8 @@ pub unsafe extern "C" fn dc_get_msg_reactions(
     let ctx = &*context;
 
     let reactions = if let Ok(reactions) = block_on(get_msg_reactions(ctx, MsgId::new(msg_id)))
-        .log_err(ctx, "failed dc_get_msg_reactions() call")
+        .context("failed dc_get_msg_reactions() call")
+        .log_err(ctx)
     {
         reactions
     } else {
@@ -1027,7 +1050,8 @@ pub unsafe extern "C" fn dc_send_webxdc_status_update(
         &to_string_lossy(json),
         &to_string_lossy(descr),
     ))
-    .log_err(ctx, "Failed to send webxdc update")
+    .context("Failed to send webxdc update")
+    .log_err(ctx)
     .is_ok() as libc::c_int
 }
 
@@ -1246,7 +1270,8 @@ pub unsafe extern "C" fn dc_get_fresh_msgs(
         let arr = dc_array_t::from(
             ctx.get_fresh_msgs()
                 .await
-                .log_err(ctx, "Failed to get fresh messages")
+                .context("Failed to get fresh messages")
+                .log_err(ctx)
                 .unwrap_or_default()
                 .iter()
                 .map(|msg_id| msg_id.to_u32())
@@ -1256,6 +1281,50 @@ pub unsafe extern "C" fn dc_get_fresh_msgs(
     })
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn dc_get_next_msgs(context: *mut dc_context_t) -> *mut dc_array::dc_array_t {
+    if context.is_null() {
+        eprintln!("ignoring careless call to dc_get_next_msgs()");
+        return ptr::null_mut();
+    }
+    let ctx = &*context;
+
+    let msg_ids = block_on(ctx.get_next_msgs())
+        .context("failed to get next messages")
+        .log_err(ctx)
+        .unwrap_or_default();
+    let arr = dc_array_t::from(
+        msg_ids
+            .iter()
+            .map(|msg_id| msg_id.to_u32())
+            .collect::<Vec<u32>>(),
+    );
+    Box::into_raw(Box::new(arr))
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_wait_next_msgs(
+    context: *mut dc_context_t,
+) -> *mut dc_array::dc_array_t {
+    if context.is_null() {
+        eprintln!("ignoring careless call to dc_wait_next_msgs()");
+        return ptr::null_mut();
+    }
+    let ctx = &*context;
+
+    let msg_ids = block_on(ctx.wait_next_msgs())
+        .context("failed to wait for next messages")
+        .log_err(ctx)
+        .unwrap_or_default();
+    let arr = dc_array_t::from(
+        msg_ids
+            .iter()
+            .map(|msg_id| msg_id.to_u32())
+            .collect::<Vec<u32>>(),
+    );
+    Box::into_raw(Box::new(arr))
+}
+
 #[no_mangle]
 pub unsafe extern "C" fn dc_marknoticed_chat(context: *mut dc_context_t, chat_id: u32) {
     if context.is_null() {
@@ -1267,7 +1336,8 @@ pub unsafe extern "C" fn dc_marknoticed_chat(context: *mut dc_context_t, chat_id
     block_on(async move {
         chat::marknoticed_chat(ctx, ChatId::new(chat_id))
             .await
-            .log_err(ctx, "Failed marknoticed chat")
+            .context("Failed marknoticed chat")
+            .log_err(ctx)
             .unwrap_or(())
     })
 }
@@ -1409,7 +1479,8 @@ pub unsafe extern "C" fn dc_set_chat_visibility(
         ChatId::new(chat_id)
             .set_visibility(ctx, visibility)
             .await
-            .log_err(ctx, "Failed setting chat visibility")
+            .context("Failed setting chat visibility")
+            .log_err(ctx)
             .unwrap_or(())
     })
 }
@@ -1426,7 +1497,9 @@ pub unsafe extern "C" fn dc_delete_chat(context: *mut dc_context_t, chat_id: u32
         ChatId::new(chat_id)
             .delete(ctx)
             .await
-            .ok_or_log_msg(ctx, "Failed chat delete");
+            .context("Failed chat delete")
+            .log_err(ctx)
+            .ok();
     })
 }
 
@@ -1442,7 +1515,9 @@ pub unsafe extern "C" fn dc_block_chat(context: *mut dc_context_t, chat_id: u32)
         ChatId::new(chat_id)
             .block(ctx)
             .await
-            .ok_or_log_msg(ctx, "Failed chat block");
+            .context("Failed chat block")
+            .log_err(ctx)
+            .ok();
     })
 }
 
@@ -1458,7 +1533,9 @@ pub unsafe extern "C" fn dc_accept_chat(context: *mut dc_context_t, chat_id: u32
         ChatId::new(chat_id)
             .accept(ctx)
             .await
-            .ok_or_log_msg(ctx, "Failed chat accept");
+            .context("Failed chat accept")
+            .log_err(ctx)
+            .ok();
     })
 }
 
@@ -1556,7 +1633,8 @@ pub unsafe extern "C" fn dc_create_group_chat(
     block_on(async move {
         chat::create_group_chat(ctx, protect, &to_string_lossy(name))
             .await
-            .log_err(ctx, "Failed to create group chat")
+            .context("Failed to create group chat")
+            .log_err(ctx)
             .map(|id| id.to_u32())
             .unwrap_or(0)
     })
@@ -1570,7 +1648,8 @@ pub unsafe extern "C" fn dc_create_broadcast_list(context: *mut dc_context_t) ->
     }
     let ctx = &*context;
     block_on(chat::create_broadcast_list(ctx))
-        .log_err(ctx, "Failed to create broadcast list")
+        .context("Failed to create broadcast list")
+        .log_err(ctx)
         .map(|id| id.to_u32())
         .unwrap_or(0)
 }
@@ -1592,7 +1671,8 @@ pub unsafe extern "C" fn dc_is_contact_in_chat(
         ChatId::new(chat_id),
         ContactId::new(contact_id),
     ))
-    .log_err(ctx, "is_contact_in_chat failed")
+    .context("is_contact_in_chat failed")
+    .log_err(ctx)
     .unwrap_or_default() as libc::c_int
 }
 
@@ -1613,7 +1693,8 @@ pub unsafe extern "C" fn dc_add_contact_to_chat(
         ChatId::new(chat_id),
         ContactId::new(contact_id),
     ))
-    .log_err(ctx, "Failed to add contact")
+    .context("Failed to add contact")
+    .log_err(ctx)
     .is_ok() as libc::c_int
 }
 
@@ -1634,7 +1715,8 @@ pub unsafe extern "C" fn dc_remove_contact_from_chat(
         ChatId::new(chat_id),
         ContactId::new(contact_id),
     ))
-    .log_err(ctx, "Failed to remove contact")
+    .context("Failed to remove contact")
+    .log_err(ctx)
     .is_ok() as libc::c_int
 }
 
@@ -1753,7 +1835,8 @@ pub unsafe extern "C" fn dc_get_chat_ephemeral_timer(
     // ignored when ephemeral timer value is used to construct
     // message headers.
     block_on(async move { ChatId::new(chat_id).get_ephemeral_timer(ctx).await })
-        .log_err(ctx, "Failed to get ephemeral timer")
+        .context("Failed to get ephemeral timer")
+        .log_err(ctx)
         .unwrap_or_default()
         .to_u32()
 }
@@ -1774,7 +1857,8 @@ pub unsafe extern "C" fn dc_set_chat_ephemeral_timer(
         ChatId::new(chat_id)
             .set_ephemeral_timer(ctx, EphemeralTimer::from_u32(timer))
             .await
-            .log_err(ctx, "Failed to set ephemeral timer")
+            .context("Failed to set ephemeral timer")
+            .log_err(ctx)
             .is_ok() as libc::c_int
     })
 }
@@ -1850,7 +1934,8 @@ pub unsafe extern "C" fn dc_delete_msgs(
     let msg_ids = convert_and_prune_message_ids(msg_ids, msg_cnt);
 
     block_on(message::delete_msgs(ctx, &msg_ids))
-        .log_err(ctx, "failed dc_delete_msgs() call")
+        .context("failed dc_delete_msgs() call")
+        .log_err(ctx)
         .ok();
 }
 
@@ -1914,7 +1999,8 @@ pub unsafe extern "C" fn dc_markseen_msgs(
     let ctx = &*context;
 
     block_on(message::markseen_msgs(ctx, msg_ids))
-        .log_err(ctx, "failed dc_markseen_msgs() call")
+        .context("failed dc_markseen_msgs() call")
+        .log_err(ctx)
         .ok();
 }
 
@@ -1956,7 +2042,8 @@ pub unsafe extern "C" fn dc_download_full_msg(context: *mut dc_context_t, msg_id
     }
     let ctx = &*context;
     block_on(MsgId::new(msg_id).download_full(ctx))
-        .log_err(ctx, "Failed to download message fully.")
+        .context("Failed to download message fully.")
+        .log_err(ctx)
         .ok();
 }
 
@@ -2004,7 +2091,8 @@ pub unsafe extern "C" fn dc_create_contact(
     let name = to_string_lossy(name);
 
     block_on(Contact::create(ctx, &name, &to_string_lossy(addr)))
-        .log_err(ctx, "Cannot create contact")
+        .context("Cannot create contact")
+        .log_err(ctx)
         .map(|id| id.to_u32())
         .unwrap_or(0)
 }
@@ -2081,7 +2169,8 @@ pub unsafe extern "C" fn dc_get_blocked_contacts(
         Box::into_raw(Box::new(dc_array_t::from(
             Contact::get_all_blocked(ctx)
                 .await
-                .log_err(ctx, "Can't get blocked contacts")
+                .context("Can't get blocked contacts")
+                .log_err(ctx)
                 .unwrap_or_default()
                 .iter()
                 .map(|id| id.to_u32())
@@ -2106,11 +2195,15 @@ pub unsafe extern "C" fn dc_block_contact(
         if block == 0 {
             Contact::unblock(ctx, contact_id)
                 .await
-                .ok_or_log_msg(ctx, "Can't unblock contact");
+                .context("Can't unblock contact")
+                .log_err(ctx)
+                .ok();
         } else {
             Contact::block(ctx, contact_id)
                 .await
-                .ok_or_log_msg(ctx, "Can't block contact");
+                .context("Can't block contact")
+                .log_err(ctx)
+                .ok();
         }
     });
 }
@@ -2183,7 +2276,8 @@ fn spawn_imex(ctx: Context, what: imex::ImexMode, param1: String, passphrase: Op
     spawn(async move {
         imex::imex(&ctx, what, param1.as_ref(), passphrase)
             .await
-            .log_err(&ctx, "IMEX failed")
+            .context("IMEX failed")
+            .log_err(&ctx)
     });
 }
 
@@ -2369,7 +2463,8 @@ pub unsafe extern "C" fn dc_join_securejoin(
         securejoin::join_securejoin(ctx, &to_string_lossy(qr))
             .await
             .map(|chatid| chatid.to_u32())
-            .log_err(ctx, "failed dc_join_securejoin() call")
+            .context("failed dc_join_securejoin() call")
+            .log_err(ctx)
             .unwrap_or_default()
     })
 }
@@ -2391,7 +2486,8 @@ pub unsafe extern "C" fn dc_send_locations_to_chat(
         ChatId::new(chat_id),
         seconds as i64,
     ))
-    .log_err(ctx, "Failed dc_send_locations_to_chat()")
+    .context("Failed dc_send_locations_to_chat()")
+    .log_err(ctx)
     .ok();
 }
 
@@ -2474,7 +2570,8 @@ pub unsafe extern "C" fn dc_delete_all_locations(context: *mut dc_context_t) {
     block_on(async move {
         location::delete_all(ctx)
             .await
-            .log_err(ctx, "Failed to delete locations")
+            .context("Failed to delete locations")
+            .log_err(ctx)
             .ok()
     });
 }
@@ -2758,7 +2855,8 @@ pub unsafe extern "C" fn dc_chatlist_get_summary(
             .list
             .get_summary(ctx, index, maybe_chat)
             .await
-            .log_err(ctx, "get_summary failed")
+            .context("get_summary failed")
+            .log_err(ctx)
             .unwrap_or_default();
         Box::into_raw(Box::new(summary.into()))
     })
@@ -2786,7 +2884,8 @@ pub unsafe extern "C" fn dc_chatlist_get_summary2(
         msg_id,
         None,
     ))
-    .log_err(ctx, "get_summary2 failed")
+    .context("get_summary2 failed")
+    .log_err(ctx)
     .unwrap_or_default();
     Box::into_raw(Box::new(summary.into()))
 }
@@ -2969,7 +3068,8 @@ pub unsafe extern "C" fn dc_chat_can_send(chat: *mut dc_chat_t) -> libc::c_int {
     let ffi_chat = &*chat;
     let ctx = &*ffi_chat.context;
     block_on(ffi_chat.chat.can_send(ctx))
-        .log_err(ctx, "can_send failed")
+        .context("can_send failed")
+        .log_err(ctx)
         .unwrap_or_default() as libc::c_int
 }
 
@@ -3414,7 +3514,8 @@ pub unsafe extern "C" fn dc_msg_get_summary(
     let ctx = &*ffi_msg.context;
 
     let summary = block_on(ffi_msg.message.get_summary(ctx, maybe_chat))
-        .log_err(ctx, "dc_msg_get_summary failed")
+        .context("dc_msg_get_summary failed")
+        .log_err(ctx)
         .unwrap_or_default();
     Box::into_raw(Box::new(summary.into()))
 }
@@ -3432,7 +3533,8 @@ pub unsafe extern "C" fn dc_msg_get_summarytext(
     let ctx = &*ffi_msg.context;
 
     let summary = block_on(ffi_msg.message.get_summary(ctx, None))
-        .log_err(ctx, "dc_msg_get_summarytext failed")
+        .context("dc_msg_get_summarytext failed")
+        .log_err(ctx)
         .unwrap_or_default();
     match usize::try_from(approx_characters) {
         Ok(chars) => summary.truncated_text(chars).strdup(),
@@ -3699,7 +3801,9 @@ pub unsafe extern "C" fn dc_msg_latefiling_mediasize(
             .message
             .latefiling_mediasize(ctx, width, height, duration)
     })
-    .ok_or_log_msg(ctx, "Cannot set media size");
+    .context("Cannot set media size")
+    .log_err(ctx)
+    .ok();
 }
 
 #[no_mangle]
@@ -3738,7 +3842,8 @@ pub unsafe extern "C" fn dc_msg_set_quote(msg: *mut dc_msg_t, quote: *const dc_m
             .message
             .set_quote(&*ffi_msg.context, quote_msg)
             .await
-            .log_err(&*ffi_msg.context, "failed to set quote")
+            .context("failed to set quote")
+            .log_err(&*ffi_msg.context)
             .ok();
     });
 }
@@ -3769,7 +3874,8 @@ pub unsafe extern "C" fn dc_msg_get_quoted_msg(msg: *const dc_msg_t) -> *mut dc_
             .message
             .quoted_message(context)
             .await
-            .log_err(context, "failed to get quoted message")
+            .context("failed to get quoted message")
+            .log_err(context)
             .unwrap_or(None)
     });
 
@@ -3792,7 +3898,8 @@ pub unsafe extern "C" fn dc_msg_get_parent(msg: *const dc_msg_t) -> *mut dc_msg_
             .message
             .parent(context)
             .await
-            .log_err(context, "failed to get parent message")
+            .context("failed to get parent message")
+            .log_err(context)
             .unwrap_or(None)
     });
 
@@ -3983,7 +4090,8 @@ pub unsafe extern "C" fn dc_contact_is_verified(contact: *mut dc_contact_t) -> l
     let ctx = &*ffi_contact.context;
 
     block_on(ffi_contact.contact.is_verified(ctx))
-        .log_err(ctx, "is_verified failed")
+        .context("is_verified failed")
+        .log_err(ctx)
         .unwrap_or_default() as libc::c_int
 }
 
@@ -3998,7 +4106,8 @@ pub unsafe extern "C" fn dc_contact_get_verifier_addr(
     let ffi_contact = &*contact;
     let ctx = &*ffi_contact.context;
     block_on(ffi_contact.contact.get_verifier_addr(ctx))
-        .log_err(ctx, "failed to get verifier for contact")
+        .context("failed to get verifier for contact")
+        .log_err(ctx)
         .unwrap_or_default()
         .strdup()
 }
@@ -4012,7 +4121,8 @@ pub unsafe extern "C" fn dc_contact_get_verifier_id(contact: *mut dc_contact_t)
     let ffi_contact = &*contact;
     let ctx = &*ffi_contact.context;
     let verifier_contact_id = block_on(ffi_contact.contact.get_verifier_id(ctx))
-        .log_err(ctx, "failed to get verifier")
+        .context("failed to get verifier")
+        .log_err(ctx)
         .unwrap_or_default()
         .unwrap_or_default();
 
@@ -4142,6 +4252,131 @@ pub unsafe extern "C" fn dc_str_unref(s: *mut libc::c_char) {
     libc::free(s as *mut _)
 }
 
+pub struct BackupProviderWrapper {
+    context: *const dc_context_t,
+    provider: BackupProvider,
+}
+
+pub type dc_backup_provider_t = BackupProviderWrapper;
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_backup_provider_new(
+    context: *mut dc_context_t,
+) -> *mut dc_backup_provider_t {
+    if context.is_null() {
+        eprintln!("ignoring careless call to dc_backup_provider_new()");
+        return ptr::null_mut();
+    }
+    let ctx = &*context;
+    block_on(BackupProvider::prepare(ctx))
+        .map(|provider| BackupProviderWrapper {
+            context: ctx,
+            provider,
+        })
+        .map(|ffi_provider| Box::into_raw(Box::new(ffi_provider)))
+        .context("BackupProvider failed")
+        .log_err(ctx)
+        .set_last_error(ctx)
+        .unwrap_or(ptr::null_mut())
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_backup_provider_get_qr(
+    provider: *const dc_backup_provider_t,
+) -> *mut libc::c_char {
+    if provider.is_null() {
+        eprintln!("ignoring careless call to dc_backup_provider_qr");
+        return "".strdup();
+    }
+    let ffi_provider = &*provider;
+    let ctx = &*ffi_provider.context;
+    deltachat::qr::format_backup(&ffi_provider.provider.qr())
+        .context("BackupProvider get_qr failed")
+        .log_err(ctx)
+        .set_last_error(ctx)
+        .unwrap_or_default()
+        .strdup()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_backup_provider_get_qr_svg(
+    provider: *const dc_backup_provider_t,
+) -> *mut libc::c_char {
+    if provider.is_null() {
+        eprintln!("ignoring careless call to dc_backup_provider_qr_svg()");
+        return "".strdup();
+    }
+    let ffi_provider = &*provider;
+    let ctx = &*ffi_provider.context;
+    let provider = &ffi_provider.provider;
+    block_on(generate_backup_qr(ctx, &provider.qr()))
+        .context("BackupProvider get_qr_svg failed")
+        .log_err(ctx)
+        .set_last_error(ctx)
+        .unwrap_or_default()
+        .strdup()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_backup_provider_wait(provider: *mut dc_backup_provider_t) {
+    if provider.is_null() {
+        eprintln!("ignoring careless call to dc_backup_provider_wait()");
+        return;
+    }
+    let ffi_provider = &mut *provider;
+    let ctx = &*ffi_provider.context;
+    let provider = &mut ffi_provider.provider;
+    block_on(provider)
+        .context("Failed to await BackupProvider")
+        .log_err(ctx)
+        .set_last_error(ctx)
+        .ok();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_backup_provider_unref(provider: *mut dc_backup_provider_t) {
+    if provider.is_null() {
+        eprintln!("ignoring careless call to dc_backup_provider_unref()");
+        return;
+    }
+    drop(Box::from_raw(provider));
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_receive_backup(
+    context: *mut dc_context_t,
+    qr: *const libc::c_char,
+) -> libc::c_int {
+    if context.is_null() {
+        eprintln!("ignoring careless call to dc_receive_backup()");
+        return 0;
+    }
+    let ctx = &*context;
+    let qr_text = to_string_lossy(qr);
+    receive_backup(ctx.clone(), qr_text)
+}
+
+// Because this is a long-running operation make sure we own the Context.  This stops a FFI
+// user from deallocating it by calling unref on the object while we are using it.
+fn receive_backup(ctx: Context, qr_text: String) -> libc::c_int {
+    let qr = match block_on(qr::check_qr(&ctx, &qr_text))
+        .context("Invalid QR code")
+        .log_err(&ctx)
+        .set_last_error(&ctx)
+    {
+        Ok(qr) => qr,
+        Err(_) => return 0,
+    };
+    match block_on(imex::get_backup(&ctx, qr))
+        .context("Get backup failed")
+        .log_err(&ctx)
+        .set_last_error(&ctx)
+    {
+        Ok(_) => 1,
+        Err(_) => 0,
+    }
+}
+
 trait ResultExt<T, E> {
     /// Like `log_err()`, but:
     /// - returns the default value instead of an Err value.
@@ -4162,6 +4397,56 @@ impl<T: Default, E: std::fmt::Display> ResultExt<T, E> for Result<T, E> {
     }
 }
 
+trait ResultLastError<T, E>
+where
+    E: std::fmt::Display,
+{
+    /// Sets this `Err` value using [`Context::set_last_error`].
+    ///
+    /// Normally each FFI-API *should* call this if it handles an error from the Rust API:
+    /// errors which need to be reported to users in response to an API call need to be
+    /// propagated up the Rust API and at the FFI boundary need to be stored into the "last
+    /// error" so the FFI users can retrieve an appropriate error message on failure.  Often
+    /// you will want to combine this with a call to [`LogExt::log_err`].
+    ///
+    /// Since historically calls to the `deltachat::log::error!()` macro were (and sometimes
+    /// still are) shown as error toasts to the user, this macro also calls
+    /// [`Context::set_last_error`].  It is preferable however to rely on normal error
+    /// propagation in Rust code however and only use this `ResultExt::set_last_error` call
+    /// in the FFI layer.
+    ///
+    /// # Example
+    ///
+    /// Fully handling an error in the FFI code looks like this currently:
+    ///
+    /// ```no_compile
+    /// some_dc_rust_api_call_returning_result()
+    ///     .context("My API call failed")
+    ///     .log_err(&context)
+    ///     .set_last_error(&context)
+    ///     .unwrap_or_default()
+    /// ```
+    ///
+    /// As shows it is a shame the `.log_err()` call currently needs a message instead of
+    /// relying on an implicit call to the [`anyhow::Context`] call if needed.  This stems
+    /// from a time before we fully embraced anyhow.  Some day we'll also fix that.
+    ///
+    /// [`Context::set_last_error`]: context::Context::set_last_error
+    fn set_last_error(self, context: &context::Context) -> Result<T, E>;
+}
+
+impl<T, E> ResultLastError<T, E> for Result<T, E>
+where
+    E: std::fmt::Display,
+{
+    fn set_last_error(self, context: &context::Context) -> Result<T, E> {
+        if let Err(ref err) = self {
+            context.set_last_error(&format!("{err:#}"));
+        }
+        self
+    }
+}
+
 trait ResultNullableExt<T> {
     fn into_raw(self) -> *mut T;
 }
@@ -4224,7 +4509,8 @@ pub unsafe extern "C" fn dc_provider_new_from_email_with_dns(
     let socks5_enabled = block_on(async move {
         ctx.get_config_bool(config::Config::Socks5Enabled)
             .await
-            .log_err(ctx, "Can't get config")
+            .context("Can't get config")
+            .log_err(ctx)
     });
 
     match socks5_enabled {
@@ -4287,6 +4573,96 @@ pub unsafe extern "C" fn dc_provider_unref(provider: *mut dc_provider_t) {
     // this may change once we start localizing string.
 }
 
+// dc_http_response_t
+
+pub type dc_http_response_t = net::HttpResponse;
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_get_http_response(
+    context: *const dc_context_t,
+    url: *const libc::c_char,
+) -> *mut dc_http_response_t {
+    if context.is_null() || url.is_null() {
+        eprintln!("ignoring careless call to dc_get_http_response()");
+        return ptr::null_mut();
+    }
+
+    let context = &*context;
+    let url = to_string_lossy(url);
+    if let Ok(response) = block_on(read_url_blob(context, &url))
+        .context("read_url_blob")
+        .log_err(context)
+    {
+        Box::into_raw(Box::new(response))
+    } else {
+        ptr::null_mut()
+    }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_http_response_get_mimetype(
+    response: *const dc_http_response_t,
+) -> *mut libc::c_char {
+    if response.is_null() {
+        eprintln!("ignoring careless call to dc_http_response_get_mimetype()");
+        return ptr::null_mut();
+    }
+
+    let response = &*response;
+    response.mimetype.strdup()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_http_response_get_encoding(
+    response: *const dc_http_response_t,
+) -> *mut libc::c_char {
+    if response.is_null() {
+        eprintln!("ignoring careless call to dc_http_response_get_encoding()");
+        return ptr::null_mut();
+    }
+
+    let response = &*response;
+    response.encoding.strdup()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_http_response_get_blob(
+    response: *const dc_http_response_t,
+) -> *mut libc::c_char {
+    if response.is_null() {
+        eprintln!("ignoring careless call to dc_http_response_get_blob()");
+        return ptr::null_mut();
+    }
+
+    let response = &*response;
+    let blob_len = response.blob.len();
+    let ptr = libc::malloc(blob_len);
+    libc::memcpy(ptr, response.blob.as_ptr() as *mut libc::c_void, blob_len);
+    ptr as *mut libc::c_char
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_http_response_get_size(
+    response: *const dc_http_response_t,
+) -> libc::size_t {
+    if response.is_null() {
+        eprintln!("ignoring careless call to dc_http_response_get_size()");
+        return 0;
+    }
+
+    let response = &*response;
+    response.blob.len()
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn dc_http_response_unref(response: *mut dc_http_response_t) {
+    if response.is_null() {
+        eprintln!("ignoring careless call to dc_http_response_unref()");
+        return;
+    }
+    drop(Box::from_raw(response));
+}
+
 // -- Accounts
 
 /// Reader-writer lock wrapper for accounts manager to guarantee thread safety when using
@@ -4591,7 +4967,6 @@ pub unsafe extern "C" fn dc_accounts_get_event_emitter(
 #[cfg(feature = "jsonrpc")]
 mod jsonrpc {
     use deltachat_jsonrpc::api::CommandApi;
-    use deltachat_jsonrpc::events::event_to_json_rpc_notification;
     use deltachat_jsonrpc::yerpc::{OutReceiver, RpcClient, RpcSession};
 
     use super::*;
@@ -4599,7 +4974,6 @@ mod jsonrpc {
     pub struct dc_jsonrpc_instance_t {
         receiver: OutReceiver,
         handle: RpcSession<CommandApi>,
-        event_thread: JoinHandle<Result<(), anyhow::Error>>,
     }
 
     #[no_mangle]
@@ -4612,28 +4986,12 @@ mod jsonrpc {
         }
 
         let account_manager = &*account_manager;
-        let events = block_on(account_manager.read()).get_event_emitter();
         let cmd_api = deltachat_jsonrpc::api::CommandApi::from_arc(account_manager.inner.clone());
 
         let (request_handle, receiver) = RpcClient::new();
-        let handle = RpcSession::new(request_handle.clone(), cmd_api);
+        let handle = RpcSession::new(request_handle, cmd_api);
 
-        let event_thread = spawn(async move {
-            while let Some(event) = events.recv().await {
-                let event = event_to_json_rpc_notification(event);
-                request_handle
-                    .send_notification("event", Some(event))
-                    .await?;
-            }
-            let res: Result<(), anyhow::Error> = Ok(());
-            res
-        });
-
-        let instance = dc_jsonrpc_instance_t {
-            receiver,
-            handle,
-            event_thread,
-        };
+        let instance = dc_jsonrpc_instance_t { receiver, handle };
 
         Box::into_raw(Box::new(instance))
     }
@@ -4644,7 +5002,6 @@ mod jsonrpc {
             eprintln!("ignoring careless call to dc_jsonrpc_unref()");
             return;
         }
-        (*jsonrpc_instance).event_thread.abort();
         drop(Box::from_raw(jsonrpc_instance));
     }
 

deltachat-ffi/src/lot.rs

@@ -14,6 +14,8 @@ use crate::summary::{Summary, SummaryPrefix};
 /// eg. by chatlist.get_summary() or dc_msg_get_summary().
 ///
 /// *Lot* is used in the meaning *heap* here.
+// The QR code grew too large.  So be it.
+#[allow(clippy::large_enum_variant)]
 #[derive(Debug)]
 pub enum Lot {
     Summary(Summary),
@@ -47,6 +49,7 @@ impl Lot {
                 Qr::FprMismatch { .. } => None,
                 Qr::FprWithoutAddr { fingerprint, .. } => Some(fingerprint),
                 Qr::Account { domain } => Some(domain),
+                Qr::Backup { .. } => None,
                 Qr::WebrtcInstance { domain, .. } => Some(domain),
                 Qr::Addr { draft, .. } => draft.as_deref(),
                 Qr::Url { url } => Some(url),
@@ -98,6 +101,7 @@ impl Lot {
                 Qr::FprMismatch { .. } => LotState::QrFprMismatch,
                 Qr::FprWithoutAddr { .. } => LotState::QrFprWithoutAddr,
                 Qr::Account { .. } => LotState::QrAccount,
+                Qr::Backup { .. } => LotState::QrBackup,
                 Qr::WebrtcInstance { .. } => LotState::QrWebrtcInstance,
                 Qr::Addr { .. } => LotState::QrAddr,
                 Qr::Url { .. } => LotState::QrUrl,
@@ -122,6 +126,7 @@ impl Lot {
                 Qr::FprMismatch { contact_id } => contact_id.unwrap_or_default().to_u32(),
                 Qr::FprWithoutAddr { .. } => Default::default(),
                 Qr::Account { .. } => Default::default(),
+                Qr::Backup { .. } => Default::default(),
                 Qr::WebrtcInstance { .. } => Default::default(),
                 Qr::Addr { contact_id, .. } => contact_id.to_u32(),
                 Qr::Url { .. } => Default::default(),
@@ -170,6 +175,8 @@ pub enum LotState {
     /// text1=domain
     QrAccount = 250,
 
+    QrBackup = 251,
+
     /// text1=domain, text2=instance pattern
     QrWebrtcInstance = 260,
 

deltachat-jsonrpc/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-jsonrpc"
-version = "1.111.0"
+version = "1.114.0"
 description = "DeltaChat JSON-RPC API"
 edition = "2021"
 default-run = "deltachat-jsonrpc-server"
@@ -19,21 +19,21 @@ serde = { version = "1.0", features = ["derive"] }
 tempfile = "3.3.0"
 log = "0.4"
 async-channel = { version = "1.8.0" }
-futures = { version = "0.3.26" }
-serde_json = "1.0.91"
+futures = { version = "0.3.28" }
+serde_json = "1.0.96"
 yerpc = { version = "0.4.3", features = ["anyhow_expose"] }
 typescript-type-def = { version = "0.5.5", features = ["json_value"] }
-tokio = { version = "1.25.0" }
+tokio = { version = "1.28.0" }
 sanitize-filename = "0.4"
-walkdir = "2.3.2"
+walkdir = "2.3.3"
 base64 = "0.21"
 
 # optional dependencies
-axum = { version = "0.6.6", optional = true, features = ["ws"] }
+axum = { version = "0.6.18", optional = true, features = ["ws"] }
 env_logger = { version = "0.10.0", optional = true }
 
 [dev-dependencies]
-tokio = { version = "1.25.0", features = ["full", "rt-multi-thread"] }
+tokio = { version = "1.28.0", features = ["full", "rt-multi-thread"] }
 
 
 [features]

deltachat-jsonrpc/src/api/events.rs

@@ -1,19 +1,28 @@
-use deltachat::{Event, EventType};
+use deltachat::{Event as CoreEvent, EventType as CoreEventType};
 use serde::Serialize;
-use serde_json::{json, Value};
 use typescript_type_def::TypeDef;
 
-pub fn event_to_json_rpc_notification(event: Event) -> Value {
-    let id: JSONRPCEventType = event.typ.into();
-    json!({
-        "event": id,
-        "contextId": event.id,
-    })
+#[derive(Serialize, TypeDef)]
+pub struct Event {
+    /// Event payload.
+    event: EventType,
+
+    /// Account ID.
+    context_id: u32,
+}
+
+impl From<CoreEvent> for Event {
+    fn from(event: CoreEvent) -> Self {
+        Event {
+            event: event.typ.into(),
+            context_id: event.id,
+        }
+    }
 }
 
 #[derive(Serialize, TypeDef)]
-#[serde(tag = "type", rename = "Event")]
-pub enum JSONRPCEventType {
+#[serde(tag = "type")]
+pub enum EventType {
     /// The library-user may write an informational string to the log.
     ///
     /// This event should *not* be reported to the end-user using a popup or something like
@@ -47,6 +56,9 @@ pub enum JSONRPCEventType {
         msg: String,
     },
 
+    /// Emitted before going into IDLE on the Inbox folder.
+    ImapInboxIdle,
+
     /// Emitted when an new file in the $BLOBDIR was created
     NewBlobFile {
         file: String,
@@ -283,26 +295,27 @@ pub enum JSONRPCEventType {
     },
 }
 
-impl From<EventType> for JSONRPCEventType {
-    fn from(event: EventType) -> Self {
-        use JSONRPCEventType::*;
+impl From<CoreEventType> for EventType {
+    fn from(event: CoreEventType) -> Self {
+        use EventType::*;
         match event {
-            EventType::Info(msg) => Info { msg },
-            EventType::SmtpConnected(msg) => SmtpConnected { msg },
-            EventType::ImapConnected(msg) => ImapConnected { msg },
-            EventType::SmtpMessageSent(msg) => SmtpMessageSent { msg },
-            EventType::ImapMessageDeleted(msg) => ImapMessageDeleted { msg },
-            EventType::ImapMessageMoved(msg) => ImapMessageMoved { msg },
-            EventType::NewBlobFile(file) => NewBlobFile { file },
-            EventType::DeletedBlobFile(file) => DeletedBlobFile { file },
-            EventType::Warning(msg) => Warning { msg },
-            EventType::Error(msg) => Error { msg },
-            EventType::ErrorSelfNotInGroup(msg) => ErrorSelfNotInGroup { msg },
-            EventType::MsgsChanged { chat_id, msg_id } => MsgsChanged {
+            CoreEventType::Info(msg) => Info { msg },
+            CoreEventType::SmtpConnected(msg) => SmtpConnected { msg },
+            CoreEventType::ImapConnected(msg) => ImapConnected { msg },
+            CoreEventType::SmtpMessageSent(msg) => SmtpMessageSent { msg },
+            CoreEventType::ImapMessageDeleted(msg) => ImapMessageDeleted { msg },
+            CoreEventType::ImapMessageMoved(msg) => ImapMessageMoved { msg },
+            CoreEventType::ImapInboxIdle => ImapInboxIdle,
+            CoreEventType::NewBlobFile(file) => NewBlobFile { file },
+            CoreEventType::DeletedBlobFile(file) => DeletedBlobFile { file },
+            CoreEventType::Warning(msg) => Warning { msg },
+            CoreEventType::Error(msg) => Error { msg },
+            CoreEventType::ErrorSelfNotInGroup(msg) => ErrorSelfNotInGroup { msg },
+            CoreEventType::MsgsChanged { chat_id, msg_id } => MsgsChanged {
                 chat_id: chat_id.to_u32(),
                 msg_id: msg_id.to_u32(),
             },
-            EventType::ReactionsChanged {
+            CoreEventType::ReactionsChanged {
                 chat_id,
                 msg_id,
                 contact_id,
@@ -311,92 +324,76 @@ impl From<EventType> for JSONRPCEventType {
                 msg_id: msg_id.to_u32(),
                 contact_id: contact_id.to_u32(),
             },
-            EventType::IncomingMsg { chat_id, msg_id } => IncomingMsg {
+            CoreEventType::IncomingMsg { chat_id, msg_id } => IncomingMsg {
                 chat_id: chat_id.to_u32(),
                 msg_id: msg_id.to_u32(),
             },
-            EventType::IncomingMsgBunch { msg_ids } => IncomingMsgBunch {
+            CoreEventType::IncomingMsgBunch { msg_ids } => IncomingMsgBunch {
                 msg_ids: msg_ids.into_iter().map(|id| id.to_u32()).collect(),
             },
-            EventType::MsgsNoticed(chat_id) => MsgsNoticed {
+            CoreEventType::MsgsNoticed(chat_id) => MsgsNoticed {
                 chat_id: chat_id.to_u32(),
             },
-            EventType::MsgDelivered { chat_id, msg_id } => MsgDelivered {
+            CoreEventType::MsgDelivered { chat_id, msg_id } => MsgDelivered {
                 chat_id: chat_id.to_u32(),
                 msg_id: msg_id.to_u32(),
             },
-            EventType::MsgFailed { chat_id, msg_id } => MsgFailed {
+            CoreEventType::MsgFailed { chat_id, msg_id } => MsgFailed {
                 chat_id: chat_id.to_u32(),
                 msg_id: msg_id.to_u32(),
             },
-            EventType::MsgRead { chat_id, msg_id } => MsgRead {
+            CoreEventType::MsgRead { chat_id, msg_id } => MsgRead {
                 chat_id: chat_id.to_u32(),
                 msg_id: msg_id.to_u32(),
             },
-            EventType::ChatModified(chat_id) => ChatModified {
+            CoreEventType::ChatModified(chat_id) => ChatModified {
                 chat_id: chat_id.to_u32(),
             },
-            EventType::ChatEphemeralTimerModified { chat_id, timer } => {
+            CoreEventType::ChatEphemeralTimerModified { chat_id, timer } => {
                 ChatEphemeralTimerModified {
                     chat_id: chat_id.to_u32(),
                     timer: timer.to_u32(),
                 }
             }
-            EventType::ContactsChanged(contact) => ContactsChanged {
+            CoreEventType::ContactsChanged(contact) => ContactsChanged {
                 contact_id: contact.map(|c| c.to_u32()),
             },
-            EventType::LocationChanged(contact) => LocationChanged {
+            CoreEventType::LocationChanged(contact) => LocationChanged {
                 contact_id: contact.map(|c| c.to_u32()),
             },
-            EventType::ConfigureProgress { progress, comment } => {
+            CoreEventType::ConfigureProgress { progress, comment } => {
                 ConfigureProgress { progress, comment }
             }
-            EventType::ImexProgress(progress) => ImexProgress { progress },
-            EventType::ImexFileWritten(path) => ImexFileWritten {
+            CoreEventType::ImexProgress(progress) => ImexProgress { progress },
+            CoreEventType::ImexFileWritten(path) => ImexFileWritten {
                 path: path.to_str().unwrap_or_default().to_owned(),
             },
-            EventType::SecurejoinInviterProgress {
+            CoreEventType::SecurejoinInviterProgress {
                 contact_id,
                 progress,
             } => SecurejoinInviterProgress {
                 contact_id: contact_id.to_u32(),
                 progress,
             },
-            EventType::SecurejoinJoinerProgress {
+            CoreEventType::SecurejoinJoinerProgress {
                 contact_id,
                 progress,
             } => SecurejoinJoinerProgress {
                 contact_id: contact_id.to_u32(),
                 progress,
             },
-            EventType::ConnectivityChanged => ConnectivityChanged,
-            EventType::SelfavatarChanged => SelfavatarChanged,
-            EventType::WebxdcStatusUpdate {
+            CoreEventType::ConnectivityChanged => ConnectivityChanged,
+            CoreEventType::SelfavatarChanged => SelfavatarChanged,
+            CoreEventType::WebxdcStatusUpdate {
                 msg_id,
                 status_update_serial,
             } => WebxdcStatusUpdate {
                 msg_id: msg_id.to_u32(),
                 status_update_serial: status_update_serial.to_u32(),
             },
-            EventType::WebxdcInstanceDeleted { msg_id } => WebxdcInstanceDeleted {
+            CoreEventType::WebxdcInstanceDeleted { msg_id } => WebxdcInstanceDeleted {
                 msg_id: msg_id.to_u32(),
             },
         }
     }
 }
-
-#[cfg(test)]
-#[test]
-fn generate_events_ts_types_definition() {
-    let events = {
-        let mut buf = Vec::new();
-        let options = typescript_type_def::DefinitionFileOptions {
-            root_namespace: None,
-            ..typescript_type_def::DefinitionFileOptions::default()
-        };
-        typescript_type_def::write_definition_file::<_, JSONRPCEventType>(&mut buf, options)
-            .unwrap();
-        String::from_utf8(buf).unwrap()
-    };
-    std::fs::write("typescript/generated/events.ts", events).unwrap();
-}

deltachat-jsonrpc/src/api/mod.rs

@@ -4,6 +4,7 @@ use std::{collections::HashMap, str::FromStr};
 
 use anyhow::{anyhow, bail, ensure, Context, Result};
 pub use deltachat::accounts::Accounts;
+use deltachat::qr::Qr;
 use deltachat::{
     chat::{
         self, add_contact_to_chat, forward_msgs, get_chat_media, get_chat_msgs, get_chat_msgs_ex,
@@ -22,14 +23,15 @@ use deltachat::{
     },
     provider::get_provider_info,
     qr,
-    qr_code_generator::get_securejoin_qr_svg,
-    reaction::send_reaction,
+    qr_code_generator::{generate_backup_qr, get_securejoin_qr_svg},
+    reaction::{get_msg_reactions, send_reaction},
     securejoin,
     stock_str::StockMessage,
     webxdc::StatusUpdateSerial,
 };
 use sanitize_filename::is_sanitized;
-use tokio::{fs, sync::RwLock};
+use tokio::fs;
+use tokio::sync::{watch, Mutex, RwLock};
 use walkdir::WalkDir;
 use yerpc::rpc;
 
@@ -39,13 +41,15 @@ pub mod types;
 use num_traits::FromPrimitive;
 use types::account::Account;
 use types::chat::FullChat;
-use types::chat_list::ChatListEntry;
 use types::contact::ContactObject;
+use types::http::HttpResponse;
 use types::message::MessageData;
 use types::message::MessageObject;
 use types::provider_info::ProviderInfo;
+use types::reactions::JSONRPCReactions;
 use types::webxdc::WebxdcMessageInfo;
 
+use self::events::Event;
 use self::types::message::MessageLoadResult;
 use self::types::{
     chat::{BasicChat, JSONRPCChatVisibility, MuteDuration},
@@ -57,21 +61,45 @@ use self::types::{
 use crate::api::types::chat_list::{get_chat_list_item_by_id, ChatListItemFetchResult};
 use crate::api::types::qr::QrObject;
 
+#[derive(Debug)]
+struct AccountState {
+    /// The Qr code for current [`CommandApi::provide_backup`] call.
+    ///
+    /// If there currently is a call to [`CommandApi::provide_backup`] this will be
+    /// `Pending` or `Ready`, otherwise `NoProvider`.
+    backup_provider_qr: watch::Sender<ProviderQr>,
+}
+
+impl Default for AccountState {
+    fn default() -> Self {
+        let (tx, _rx) = watch::channel(ProviderQr::NoProvider);
+        Self {
+            backup_provider_qr: tx,
+        }
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct CommandApi {
     pub(crate) accounts: Arc<RwLock<Accounts>>,
+
+    states: Arc<Mutex<BTreeMap<u32, AccountState>>>,
 }
 
 impl CommandApi {
     pub fn new(accounts: Accounts) -> Self {
         CommandApi {
             accounts: Arc::new(RwLock::new(accounts)),
+            states: Arc::new(Mutex::new(BTreeMap::new())),
         }
     }
 
     #[allow(dead_code)]
     pub fn from_arc(accounts: Arc<RwLock<Accounts>>) -> Self {
-        CommandApi { accounts }
+        CommandApi {
+            accounts,
+            states: Arc::new(Mutex::new(BTreeMap::new())),
+        }
     }
 
     async fn get_context(&self, id: u32) -> Result<deltachat::context::Context> {
@@ -83,6 +111,38 @@ impl CommandApi {
             .ok_or_else(|| anyhow!("account with id {} not found", id))?;
         Ok(sc)
     }
+
+    async fn with_state<F, T>(&self, id: u32, with_state: F) -> T
+    where
+        F: FnOnce(&AccountState) -> T,
+    {
+        let mut states = self.states.lock().await;
+        let state = states.entry(id).or_insert_with(Default::default);
+        with_state(state)
+    }
+
+    async fn inner_get_backup_qr(&self, account_id: u32) -> Result<Qr> {
+        let mut receiver = self
+            .with_state(account_id, |state| state.backup_provider_qr.subscribe())
+            .await;
+
+        let val: ProviderQr = receiver.borrow_and_update().clone();
+        match val {
+            ProviderQr::NoProvider => bail!("No backup being provided"),
+            ProviderQr::Pending => loop {
+                if receiver.changed().await.is_err() {
+                    bail!("No backup being provided (account state dropped)");
+                }
+                let val: ProviderQr = receiver.borrow().clone();
+                match val {
+                    ProviderQr::NoProvider => bail!("No backup being provided"),
+                    ProviderQr::Pending => continue,
+                    ProviderQr::Ready(qr) => break Ok(qr),
+                };
+            },
+            ProviderQr::Ready(qr) => Ok(qr),
+        }
+    }
 }
 
 #[rpc(all_positional, ts_outdir = "typescript/generated")]
@@ -106,6 +166,16 @@ impl CommandApi {
         get_info()
     }
 
+    /// Get the next event.
+    async fn get_next_event(&self) -> Result<Event> {
+        let event_emitter = self.accounts.read().await.get_event_emitter();
+        event_emitter
+            .recv()
+            .await
+            .map(|event| event.into())
+            .context("event channel is closed")
+    }
+
     // ---------------------------------------------
     // Account Management
     // ---------------------------------------------
@@ -115,7 +185,13 @@ impl CommandApi {
     }
 
     async fn remove_account(&self, account_id: u32) -> Result<()> {
-        self.accounts.write().await.remove_account(account_id).await
+        self.accounts
+            .write()
+            .await
+            .remove_account(account_id)
+            .await?;
+        self.states.lock().await.remove(&account_id);
+        Ok(())
     }
 
     async fn get_all_account_ids(&self) -> Vec<u32> {
@@ -141,8 +217,6 @@ impl CommandApi {
             let context_option = self.accounts.read().await.get_account(id);
             if let Some(ctx) = context_option {
                 accounts.push(Account::from_context(&ctx, id).await?)
-            } else {
-                println!("account with id {id} doesn't exist anymore");
             }
         }
         Ok(accounts)
@@ -389,6 +463,49 @@ impl CommandApi {
         ChatId::new(chat_id).get_fresh_msg_cnt(&ctx).await
     }
 
+    /// Gets messages to be processed by the bot and returns their IDs.
+    ///
+    /// Only messages with database ID higher than `last_msg_id` config value
+    /// are returned. After processing the messages, the bot should
+    /// update `last_msg_id` by calling [`markseen_msgs`]
+    /// or manually updating the value to avoid getting already
+    /// processed messages.
+    ///
+    /// [`markseen_msgs`]: Self::markseen_msgs
+    async fn get_next_msgs(&self, account_id: u32) -> Result<Vec<u32>> {
+        let ctx = self.get_context(account_id).await?;
+        let msg_ids = ctx
+            .get_next_msgs()
+            .await?
+            .iter()
+            .map(|msg_id| msg_id.to_u32())
+            .collect();
+        Ok(msg_ids)
+    }
+
+    /// Waits for messages to be processed by the bot and returns their IDs.
+    ///
+    /// This function is similar to [`get_next_msgs`],
+    /// but waits for internal new message notification before returning.
+    /// New message notification is sent when new message is added to the database,
+    /// on initialization, when I/O is started and when I/O is stopped.
+    /// This allows bots to use `wait_next_msgs` in a loop to process
+    /// old messages after initialization and during the bot runtime.
+    /// To shutdown the bot, stopping I/O can be used to interrupt
+    /// pending or next `wait_next_msgs` call.
+    ///
+    /// [`get_next_msgs`]: Self::get_next_msgs
+    async fn wait_next_msgs(&self, account_id: u32) -> Result<Vec<u32>> {
+        let ctx = self.get_context(account_id).await?;
+        let msg_ids = ctx
+            .wait_next_msgs()
+            .await?
+            .iter()
+            .map(|msg_id| msg_id.to_u32())
+            .collect();
+        Ok(msg_ids)
+    }
+
     /// Estimate the number of messages that will be deleted
     /// by the set_config()-options `delete_device_after` or `delete_server_after`.
     /// This is typically used to show the estimated impact to the user
@@ -432,7 +549,7 @@ impl CommandApi {
         list_flags: Option<u32>,
         query_string: Option<String>,
         query_contact_id: Option<u32>,
-    ) -> Result<Vec<ChatListEntry>> {
+    ) -> Result<Vec<u32>> {
         let ctx = self.get_context(account_id).await?;
         let list = Chatlist::try_load(
             &ctx,
@@ -441,12 +558,9 @@ impl CommandApi {
             query_contact_id.map(ContactId::new),
         )
         .await?;
-        let mut l: Vec<ChatListEntry> = Vec::with_capacity(list.len());
+        let mut l: Vec<u32> = Vec::with_capacity(list.len());
         for i in 0..list.len() {
-            l.push(ChatListEntry(
-                list.get_chat_id(i)?.to_u32(),
-                list.get_msg_id(i)?.unwrap_or_default().to_u32(),
-            ));
+            l.push(list.get_chat_id(i)?.to_u32());
         }
         Ok(l)
     }
@@ -454,19 +568,18 @@ impl CommandApi {
     async fn get_chatlist_items_by_entries(
         &self,
         account_id: u32,
-        entries: Vec<ChatListEntry>,
+        entries: Vec<u32>,
     ) -> Result<HashMap<u32, ChatListItemFetchResult>> {
-        // todo custom json deserializer for ChatListEntry?
         let ctx = self.get_context(account_id).await?;
         let mut result: HashMap<u32, ChatListItemFetchResult> =
             HashMap::with_capacity(entries.len());
-        for entry in entries.iter() {
+        for &entry in entries.iter() {
             result.insert(
-                entry.0,
+                entry,
                 match get_chat_list_item_by_id(&ctx, entry).await {
                     Ok(res) => res,
                     Err(err) => ChatListItemFetchResult::Error {
-                        id: entry.0,
+                        id: entry,
                         error: format!("{err:#}"),
                     },
                 },
@@ -880,6 +993,11 @@ impl CommandApi {
     /// Moreover, timer is started for incoming ephemeral messages.
     /// This also happens for contact requests chats.
     ///
+    /// This function updates `last_msg_id` configuration value
+    /// to the maximum of the current value and IDs passed to this function.
+    /// Bots which mark messages as seen can rely on this side effect
+    /// to avoid updating `last_msg_id` value manually.
+    ///
     /// One #DC_EVENT_MSGS_NOTICED event is emitted per modified chat.
     async fn markseen_msgs(&self, account_id: u32, msg_ids: Vec<u32>) -> Result<()> {
         let ctx = self.get_context(account_id).await?;
@@ -1018,17 +1136,17 @@ impl CommandApi {
     }
 
     /// Search messages containing the given query string.
-    /// Searching can be done globally (chat_id=0) or in a specified chat only (chat_id set).
+    /// Searching can be done globally (chat_id=None) or in a specified chat only (chat_id set).
     ///
-    /// Global chat results are typically displayed using dc_msg_get_summary(), chat
-    /// search results may just hilite the corresponding messages and present a
+    /// Global search results are typically displayed using dc_msg_get_summary(), chat
+    /// search results may just highlight the corresponding messages and present a
     /// prev/next button.
     ///
-    /// For global search, result is limited to 1000 messages,
-    /// this allows incremental search done fast.
-    /// So, when getting exactly 1000 results, the result may be truncated;
-    /// the UIs may display sth. as "1000+ messages found" in this case.
-    /// Chat search (if a chat_id is set) is not limited.
+    /// For the global search, the result is limited to 1000 messages,
+    /// this allows an incremental search done fast.
+    /// So, when getting exactly 1000 messages, the result actually may be truncated;
+    /// the UIs may display sth. like "1000+ messages found" in this case.
+    /// The chat search (if chat_id is set) is not limited.
     async fn search_messages(
         &self,
         account_id: u32,
@@ -1325,16 +1443,13 @@ impl CommandApi {
         passphrase: Option<String>,
     ) -> Result<()> {
         let ctx = self.get_context(account_id).await?;
-        ctx.stop_io().await;
-        let result = imex::imex(
+        imex::imex(
             &ctx,
             imex::ImexMode::ExportBackup,
             destination.as_ref(),
             passphrase,
         )
-        .await;
-        ctx.start_io().await;
-        result
+        .await
     }
 
     async fn import_backup(
@@ -1353,6 +1468,75 @@ impl CommandApi {
         .await
     }
 
+    /// Offers a backup for remote devices to retrieve.
+    ///
+    /// Can be cancelled by stopping the ongoing process.  Success or failure can be tracked
+    /// via the `ImexProgress` event which should either reach `1000` for success or `0` for
+    /// failure.
+    ///
+    /// This **stops IO** while it is running.
+    ///
+    /// Returns once a remote device has retrieved the backup, or is cancelled.
+    async fn provide_backup(&self, account_id: u32) -> Result<()> {
+        let ctx = self.get_context(account_id).await?;
+        self.with_state(account_id, |state| {
+            state.backup_provider_qr.send_replace(ProviderQr::Pending);
+        })
+        .await;
+
+        let provider = imex::BackupProvider::prepare(&ctx).await?;
+        self.with_state(account_id, |state| {
+            state
+                .backup_provider_qr
+                .send_replace(ProviderQr::Ready(provider.qr()));
+        })
+        .await;
+
+        provider.await
+    }
+
+    /// Returns the text of the QR code for the running [`CommandApi::provide_backup`].
+    ///
+    /// This QR code text can be used in [`CommandApi::get_backup`] on a second device to
+    /// retrieve the backup and setup this second device.
+    ///
+    /// This call will fail if there is currently no concurrent call to
+    /// [`CommandApi::provide_backup`].  This call may block if the QR code is not yet
+    /// ready.
+    async fn get_backup_qr(&self, account_id: u32) -> Result<String> {
+        let qr = self.inner_get_backup_qr(account_id).await?;
+        qr::format_backup(&qr)
+    }
+
+    /// Returns the rendered QR code for the running [`CommandApi::provide_backup`].
+    ///
+    /// This QR code can be used in [`CommandApi::get_backup`] on a second device to
+    /// retrieve the backup and setup this second device.
+    ///
+    /// This call will fail if there is currently no concurrent call to
+    /// [`CommandApi::provide_backup`].  This call may block if the QR code is not yet
+    /// ready.
+    ///
+    /// Returns the QR code rendered as an SVG image.
+    async fn get_backup_qr_svg(&self, account_id: u32) -> Result<String> {
+        let ctx = self.get_context(account_id).await?;
+        let qr = self.inner_get_backup_qr(account_id).await?;
+        generate_backup_qr(&ctx, &qr).await
+    }
+
+    /// Gets a backup from a remote provider.
+    ///
+    /// This retrieves the backup from a remote device over the network and imports it into
+    /// the current device.
+    ///
+    /// Can be cancelled by stopping the ongoing process.
+    async fn get_backup(&self, account_id: u32, qr_text: String) -> Result<()> {
+        let ctx = self.get_context(account_id).await?;
+        let qr = qr::check_qr(&ctx, &qr_text).await?;
+        imex::get_backup(&ctx, qr).await?;
+        Ok(())
+    }
+
     // ---------------------------------------------
     //                connectivity
     // ---------------------------------------------
@@ -1480,6 +1664,15 @@ impl CommandApi {
         Ok(general_purpose::STANDARD_NO_PAD.encode(blob))
     }
 
+    /// Makes an HTTP GET request and returns a response.
+    ///
+    /// `url` is the HTTP or HTTPS URL.
+    async fn get_http_response(&self, account_id: u32, url: String) -> Result<HttpResponse> {
+        let ctx = self.get_context(account_id).await?;
+        let response = deltachat::net::read_url_blob(&ctx, &url).await?.into();
+        Ok(response)
+    }
+
     /// Forward messages to another chat.
     ///
     /// All types of messages can be forwarded,
@@ -1529,6 +1722,21 @@ impl CommandApi {
         Ok(message_id.to_u32())
     }
 
+    /// Returns reactions to the message.
+    async fn get_message_reactions(
+        &self,
+        account_id: u32,
+        message_id: u32,
+    ) -> Result<Option<JSONRPCReactions>> {
+        let ctx = self.get_context(account_id).await?;
+        let reactions = get_msg_reactions(&ctx, MsgId::new(message_id)).await?;
+        if reactions.is_empty() {
+            Ok(None)
+        } else {
+            Ok(Some(reactions.into()))
+        }
+    }
+
     async fn send_msg(&self, account_id: u32, chat_id: u32, data: MessageData) -> Result<u32> {
         let ctx = self.get_context(account_id).await?;
         let mut message = Message::new(if let Some(viewtype) = data.viewtype {
@@ -1571,6 +1779,15 @@ impl CommandApi {
         Ok(msg_id)
     }
 
+    /// Checks if messages can be sent to a given chat.
+    async fn can_send(&self, account_id: u32, chat_id: u32) -> Result<bool> {
+        let ctx = self.get_context(account_id).await?;
+        let chat_id = ChatId::new(chat_id);
+        let chat = Chat::load_from_db(&ctx, chat_id).await?;
+        let can_send = chat.can_send(&ctx).await?;
+        Ok(can_send)
+    }
+
     // ---------------------------------------------
     //           functions for the composer
     //    the composer is the message input field
@@ -1840,3 +2057,15 @@ async fn get_config(
             .await
     }
 }
+
+/// Whether a QR code for a BackupProvider is currently available.
+#[allow(clippy::large_enum_variant)]
+#[derive(Clone, Debug)]
+enum ProviderQr {
+    /// There is no provider, asking for a QR is an error.
+    NoProvider,
+    /// There is a provider, the QR code is pending.
+    Pending,
+    /// There is a provider and QR code.
+    Ready(Qr),
+}

deltachat-jsonrpc/src/api/types/chat.rs

@@ -1,6 +1,6 @@
 use std::time::{Duration, SystemTime};
 
-use anyhow::{anyhow, bail, Result};
+use anyhow::{anyhow, bail, Context as _, Result};
 use deltachat::chat::{self, get_chat_contacts, ChatVisibility};
 use deltachat::chat::{Chat, ChatId};
 use deltachat::constants::Chattype;
@@ -53,7 +53,9 @@ impl FullChat {
             contacts.push(
                 ContactObject::try_from_dc_contact(
                     context,
-                    Contact::load_from_db(context, *contact_id).await?,
+                    Contact::load_from_db(context, *contact_id)
+                        .await
+                        .context("failed to load contact")?,
                 )
                 .await?,
             )
@@ -73,7 +75,8 @@ impl FullChat {
         let was_seen_recently = if chat.get_type() == Chattype::Single {
             match contact_ids.get(0) {
                 Some(contact) => Contact::load_from_db(context, *contact)
-                    .await?
+                    .await
+                    .context("failed to load contact for was_seen_recently")?
                     .was_seen_recently(),
                 None => false,
             }

deltachat-jsonrpc/src/api/types/chat_list.rs

@@ -1,23 +1,18 @@
-use anyhow::Result;
+use anyhow::{Context, Result};
+use deltachat::chat::{Chat, ChatId};
+use deltachat::chatlist::get_last_message_for_chat;
 use deltachat::constants::*;
 use deltachat::contact::{Contact, ContactId};
 use deltachat::{
     chat::{get_chat_contacts, ChatVisibility},
     chatlist::Chatlist,
 };
-use deltachat::{
-    chat::{Chat, ChatId},
-    message::MsgId,
-};
 use num_traits::cast::ToPrimitive;
-use serde::{Deserialize, Serialize};
+use serde::Serialize;
 use typescript_type_def::TypeDef;
 
 use super::color_int_to_hex_string;
 
-#[derive(Deserialize, Serialize, TypeDef)]
-pub struct ChatListEntry(pub u32, pub u32);
-
 #[derive(Serialize, TypeDef)]
 #[serde(tag = "type")]
 pub enum ChatListItemFetchResult {
@@ -56,14 +51,9 @@ pub enum ChatListItemFetchResult {
 
 pub(crate) async fn get_chat_list_item_by_id(
     ctx: &deltachat::context::Context,
-    entry: &ChatListEntry,
+    entry: u32,
 ) -> Result<ChatListItemFetchResult> {
-    let chat_id = ChatId::new(entry.0);
-    let last_msgid = match entry.1 {
-        0 => None,
-        _ => Some(MsgId::new(entry.1)),
-    };
-
+    let chat_id = ChatId::new(entry);
     let fresh_message_counter = chat_id.get_fresh_msg_cnt(ctx).await?;
 
     if chat_id.is_archived_link() {
@@ -72,8 +62,12 @@ pub(crate) async fn get_chat_list_item_by_id(
         });
     }
 
-    let chat = Chat::load_from_db(ctx, chat_id).await?;
-    let summary = Chatlist::get_summary2(ctx, chat_id, last_msgid, Some(&chat)).await?;
+    let last_msgid = get_last_message_for_chat(ctx, chat_id).await?;
+
+    let chat = Chat::load_from_db(ctx, chat_id).await.context("chat")?;
+    let summary = Chatlist::get_summary2(ctx, chat_id, last_msgid, Some(&chat))
+        .await
+        .context("summary")?;
 
     let summary_text1 = summary.prefix.map_or_else(String::new, |s| s.to_string());
     let summary_text2 = summary.text.to_owned();
@@ -101,7 +95,8 @@ pub(crate) async fn get_chat_list_item_by_id(
         let contact = chat_contacts.get(0);
         let was_seen_recently = match contact {
             Some(contact) => Contact::load_from_db(ctx, *contact)
-                .await?
+                .await
+                .context("contact")?
                 .was_seen_recently(),
             None => false,
         };

deltachat-jsonrpc/src/api/types/http.rs

@@ -0,0 +1,29 @@
+use deltachat::net::HttpResponse as CoreHttpResponse;
+use serde::Serialize;
+use typescript_type_def::TypeDef;
+
+#[derive(Serialize, TypeDef)]
+pub struct HttpResponse {
+    /// base64-encoded response body.
+    blob: String,
+
+    /// MIME type, e.g. "text/plain" or "text/html".
+    mimetype: Option<String>,
+
+    /// Encoding, e.g. "utf-8".
+    encoding: Option<String>,
+}
+
+impl From<CoreHttpResponse> for HttpResponse {
+    fn from(response: CoreHttpResponse) -> Self {
+        use base64::{engine::general_purpose, Engine as _};
+        let blob = general_purpose::STANDARD_NO_PAD.encode(response.blob);
+        let mimetype = response.mimetype;
+        let encoding = response.encoding;
+        HttpResponse {
+            blob,
+            mimetype,
+            encoding,
+        }
+    }
+}

deltachat-jsonrpc/src/api/types/mod.rs

@@ -2,6 +2,7 @@ pub mod account;
 pub mod chat;
 pub mod chat_list;
 pub mod contact;
+pub mod http;
 pub mod location;
 pub mod message;
 pub mod provider_info;

deltachat-jsonrpc/src/api/types/qr.rs

@@ -32,6 +32,9 @@ pub enum QrObject {
     Account {
         domain: String,
     },
+    Backup {
+        ticket: String,
+    },
     WebrtcInstance {
         domain: String,
         instance_pattern: String,
@@ -126,6 +129,9 @@ impl From<Qr> for QrObject {
             }
             Qr::FprWithoutAddr { fingerprint } => QrObject::FprWithoutAddr { fingerprint },
             Qr::Account { domain } => QrObject::Account { domain },
+            Qr::Backup { ticket } => QrObject::Backup {
+                ticket: ticket.to_string(),
+            },
             Qr::WebrtcInstance {
                 domain,
                 instance_pattern,

deltachat-jsonrpc/src/webserver.rs

@@ -6,7 +6,6 @@ use yerpc::axum::handle_ws_rpc;
 use yerpc::{RpcClient, RpcSession};
 
 mod api;
-use api::events::event_to_json_rpc_notification;
 use api::{Accounts, CommandApi};
 
 const DEFAULT_PORT: u16 = 20808;
@@ -44,12 +43,5 @@ async fn main() -> Result<(), std::io::Error> {
 async fn handler(ws: WebSocketUpgrade, Extension(api): Extension<CommandApi>) -> Response {
     let (client, out_receiver) = RpcClient::new();
     let session = RpcSession::new(client.clone(), api.clone());
-    tokio::spawn(async move {
-        let events = api.accounts.read().await.get_event_emitter();
-        while let Some(event) = events.recv().await {
-            let event = event_to_json_rpc_notification(event);
-            client.send_notification("event", Some(event)).await.ok();
-        }
-    });
     handle_ws_rpc(ws, out_receiver, session).await
 }

deltachat-jsonrpc/typescript/example/example.ts

@@ -67,7 +67,7 @@ async function run() {
       null,
       null
     );
-    for (const [chatId, _messageId] of chats) {
+    for (const chatId of chats) {
       const chat = await client.rpc.getFullChatById(selectedAccount, chatId);
       write($main, `<h3>${chat.name}</h3>`);
       const messageIds = await client.rpc.getMessageIds(

deltachat-jsonrpc/typescript/package.json

@@ -55,5 +55,5 @@
   },
   "type": "module",
   "types": "dist/deltachat.d.ts",
-  "version": "1.111.0"
+  "version": "1.114.0"
 }

deltachat-jsonrpc/typescript/src/client.ts

@@ -1,7 +1,6 @@
 import * as T from "../generated/types.js";
 import * as RPC from "../generated/jsonrpc.js";
 import { RawClient } from "../generated/client.js";
-import { Event } from "../generated/events.js";
 import { WebsocketTransport, BaseTransport, Request } from "yerpc";
 import { TinyEmitter } from "@deltachat/tiny-emitter";
 
@@ -36,27 +35,33 @@ export class BaseDeltaChat<
   rpc: RawClient;
   account?: T.Account;
   private contextEmitters: { [key: number]: TinyEmitter<ContextEvents> } = {};
-  constructor(public transport: Transport) {
+
+  //@ts-ignore
+  private eventTask: Promise<void>;
+
+  constructor(public transport: Transport, startEventLoop: boolean) {
     super();
     this.rpc = new RawClient(this.transport);
-    this.transport.on("request", (request: Request) => {
-      const method = request.method;
-      if (method === "event") {
-        const event = request.params! as DCWireEvent<Event>;
-        //@ts-ignore
-        this.emit(event.event.type, event.contextId, event.event as any);
-        this.emit("ALL", event.contextId, event.event as any);
+    if (startEventLoop) {
+      this.eventTask = this.eventLoop();
+    }
+  }
 
-        if (this.contextEmitters[event.contextId]) {
-          this.contextEmitters[event.contextId].emit(
-            event.event.type,
-            //@ts-ignore
-            event.event as any
-          );
-          this.contextEmitters[event.contextId].emit("ALL", event.event);
-        }
+  async eventLoop(): Promise<void> {
+    while (true) {
+      const event = await this.rpc.getNextEvent();
+      this.emit(event.event.type, event.context_id, event.event as any);
+      this.emit("ALL", event.context_id, event.event as any);
+
+      if (this.contextEmitters[event.context_id]) {
+        this.contextEmitters[event.context_id].emit(
+          event.event.type,
+          //@ts-ignore
+          event.event as any
+        );
+        this.contextEmitters[event.context_id].emit("ALL", event.event as any);
       }
-    });
+    }
   }
 
   async listAccounts(): Promise<T.Account[]> {
@@ -75,10 +80,12 @@ export class BaseDeltaChat<
 
 export type Opts = {
   url: string;
+  startEventLoop: boolean;
 };
 
 export const DEFAULT_OPTS: Opts = {
   url: "ws://localhost:20808/ws",
+  startEventLoop: true,
 };
 export class DeltaChat extends BaseDeltaChat<WebsocketTransport> {
   opts: Opts;
@@ -86,20 +93,24 @@ export class DeltaChat extends BaseDeltaChat<WebsocketTransport> {
     this.transport.close();
   }
   constructor(opts?: Opts | string) {
-    if (typeof opts === "string") opts = { url: opts };
-    if (opts) opts = { ...DEFAULT_OPTS, ...opts };
-    else opts = { ...DEFAULT_OPTS };
+    if (typeof opts === "string") {
+      opts = { ...DEFAULT_OPTS, url: opts };
+    } else if (opts) {
+      opts = { ...DEFAULT_OPTS, ...opts };
+    } else {
+      opts = { ...DEFAULT_OPTS };
+    }
     const transport = new WebsocketTransport(opts.url);
-    super(transport);
+    super(transport, opts.startEventLoop);
     this.opts = opts;
   }
 }
 
 export class StdioDeltaChat extends BaseDeltaChat<StdioTransport> {
   close() {}
-  constructor(input: any, output: any) {
+  constructor(input: any, output: any, startEventLoop: boolean) {
     const transport = new StdioTransport(input, output);
-    super(transport);
+    super(transport, startEventLoop);
   }
 }
 

deltachat-jsonrpc/typescript/src/lib.ts

@@ -1,6 +1,5 @@
 export * as RPC from "../generated/jsonrpc.js";
 export * as T from "../generated/types.js";
-export * from "../generated/events.js";
 export { RawClient } from "../generated/client.js";
 export * from "./client.js";
 export * as yerpc from "yerpc";

deltachat-jsonrpc/typescript/test/basic.ts

@@ -12,7 +12,7 @@ describe("basic tests", () => {
 
   before(async () => {
     serverHandle = await startServer();
-    dc = new DeltaChat(serverHandle.stdin, serverHandle.stdout);
+    dc = new DeltaChat(serverHandle.stdin, serverHandle.stdout, true);
     // dc.on("ALL", (event) => {
     //console.log("event", event);
     // });

deltachat-jsonrpc/typescript/test/online.ts

@@ -27,7 +27,7 @@ describe("online tests", function () {
       this.skip();
     }
     serverHandle = await startServer();
-    dc = new DeltaChat(serverHandle.stdin, serverHandle.stdout);
+    dc = new DeltaChat(serverHandle.stdin, serverHandle.stdout, true);
 
     dc.on("ALL", (contextId, { type }) => {
       if (type !== "Info") console.log(contextId, type);

deltachat-repl/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-repl"
-version = "1.111.0"
+version = "1.114.0"
 license = "MPL-2.0"
 edition = "2021"
 
@@ -8,10 +8,10 @@ edition = "2021"
 ansi_term = "0.12.1"
 anyhow = "1"
 deltachat = { path = "..", features = ["internals"]}
-dirs = "4"
+dirs = "5"
 log = "0.4.16"
 pretty_env_logger = "0.4"
-rusqlite = "0.28"
+rusqlite = "0.29"
 rustyline = "11"
 tokio = { version = "1", features = ["fs", "rt-multi-thread", "macros"] }
 

deltachat-repl/src/cmdline.rs

@@ -336,6 +336,8 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                  has-backup\n\
                  export-backup\n\
                  import-backup <backup-file>\n\
+                 send-backup\n\
+                 receive-backup <qr>\n\
                  export-keys\n\
                  import-keys\n\
                  export-setup\n\
@@ -486,6 +488,17 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             )
             .await?;
         }
+        "send-backup" => {
+            let provider = BackupProvider::prepare(&context).await?;
+            let qr = provider.qr();
+            println!("QR code: {}", format_backup(&qr)?);
+            provider.await?;
+        }
+        "receive-backup" => {
+            ensure!(!arg1.is_empty(), "Argument <qr> is missing.");
+            let qr = check_qr(&context, arg1).await?;
+            deltachat::imex::get_backup(&context, qr).await?;
+        }
         "export-keys" => {
             let dir = dirs::home_dir().unwrap_or_default();
             imex(&context, ImexMode::ExportSelfKeys, dir.as_ref(), None).await?;
@@ -550,7 +563,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
             context.maybe_network().await;
         }
         "housekeeping" => {
-            sql::housekeeping(&context).await.ok_or_log(&context);
+            sql::housekeeping(&context).await.log_err(&context).ok();
         }
         "listchats" | "listarchived" | "chats" => {
             let listflags = if arg0 == "listarchived" {

deltachat-repl/src/main.rs

@@ -152,13 +152,15 @@ impl Completer for DcHelper {
     }
 }
 
-const IMEX_COMMANDS: [&str; 12] = [
+const IMEX_COMMANDS: [&str; 14] = [
     "initiate-key-transfer",
     "get-setupcodebegin",
     "continue-key-transfer",
     "has-backup",
     "export-backup",
     "import-backup",
+    "send-backup",
+    "receive-backup",
     "export-keys",
     "import-keys",
     "export-setup",

deltachat-rpc-client/README.md

@@ -5,9 +5,23 @@ and provides asynchronous interface to it.
 
 ## Getting started
 
-To use Delta Chat RPC client, first build a `deltachat-rpc-server` with `cargo build -p deltachat-rpc-server`.
+To use Delta Chat RPC client, first build a `deltachat-rpc-server` with `cargo build -p deltachat-rpc-server`
+or download a prebuilt release.
 Install it anywhere in your `PATH`.
 
+[Create a virtual environment](https://docs.python.org/3/library/venv.html)
+if you don't have one already and activate it.
+```
+$ python -m venv env
+$ . env/bin/activate
+```
+
+Install `deltachat-rpc-client` from source:
+```
+$ cd deltachat-rpc-client
+$ pip install .
+```
+
 ## Testing
 
 1. Build `deltachat-rpc-server` with `cargo build -p deltachat-rpc-server`.

deltachat-rpc-client/examples/echobot_no_hooks.py

@@ -6,7 +6,7 @@ import asyncio
 import logging
 import sys
 
-from deltachat_rpc_client import DeltaChat, EventType, Rpc
+from deltachat_rpc_client import DeltaChat, EventType, Rpc, SpecialContactId
 
 
 async def main():
@@ -30,9 +30,9 @@ async def main():
             await deltachat.start_io()
 
         async def process_messages():
-            for message in await account.get_fresh_messages_in_arrival_order():
+            for message in await account.get_next_messages():
                 snapshot = await message.get_snapshot()
-                if not snapshot.is_bot and not snapshot.is_info:
+                if snapshot.from_id != SpecialContactId.SELF and not snapshot.is_bot and not snapshot.is_info:
                     await snapshot.chat.send_text(snapshot.text)
                 await snapshot.message.mark_seen()
 

deltachat-rpc-client/pyproject.toml

@@ -21,6 +21,9 @@ deltachat_rpc_client = [
 [project.entry-points.pytest11]
 "deltachat_rpc_client.pytestplugin" = "deltachat_rpc_client.pytestplugin"
 
+[tool.setuptools_scm]
+root = ".."
+
 [tool.black]
 line-length = 120
 

deltachat-rpc-client/src/deltachat_rpc_client/__init__.py

@@ -3,7 +3,7 @@ from ._utils import AttrDict, run_bot_cli, run_client_cli
 from .account import Account
 from .chat import Chat
 from .client import Bot, Client
-from .const import EventType
+from .const import EventType, SpecialContactId
 from .contact import Contact
 from .deltachat import DeltaChat
 from .message import Message
@@ -19,6 +19,7 @@ __all__ = [
     "DeltaChat",
     "EventType",
     "Message",
+    "SpecialContactId",
     "Rpc",
     "run_bot_cli",
     "run_client_cli",

deltachat-rpc-client/src/deltachat_rpc_client/account.py

@@ -1,5 +1,6 @@
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, List, Optional, Tuple, Union
+from warnings import warn
 
 from ._utils import AttrDict
 from .chat import Chat
@@ -176,7 +177,7 @@ class Account:
 
         entries = await self._rpc.get_chatlist_entries(self.id, flags, query, contact and contact.id)
         if not snapshot:
-            return [Chat(self, entry[0]) for entry in entries]
+            return [Chat(self, entry) for entry in entries]
 
         items = await self._rpc.get_chatlist_items_by_entries(self.id, entries)
         chats = []
@@ -239,7 +240,22 @@ class Account:
         fresh_msg_ids = await self._rpc.get_fresh_msgs(self.id)
         return [Message(self, msg_id) for msg_id in fresh_msg_ids]
 
+    async def get_next_messages(self) -> List[Message]:
+        """Return a list of next messages."""
+        next_msg_ids = await self._rpc.get_next_msgs(self.id)
+        return [Message(self, msg_id) for msg_id in next_msg_ids]
+
+    async def wait_next_messages(self) -> List[Message]:
+        """Wait for new messages and return a list of them."""
+        next_msg_ids = await self._rpc.wait_next_msgs(self.id)
+        return [Message(self, msg_id) for msg_id in next_msg_ids]
+
     async def get_fresh_messages_in_arrival_order(self) -> List[Message]:
         """Return fresh messages list sorted in the order of their arrival, with ascending IDs."""
+        warn(
+            "get_fresh_messages_in_arrival_order is deprecated, use get_next_messages instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
         fresh_msg_ids = sorted(await self._rpc.get_fresh_msgs(self.id))
         return [Message(self, msg_id) for msg_id in fresh_msg_ids]

deltachat-rpc-client/src/deltachat_rpc_client/chat.py

@@ -105,6 +105,10 @@ class Chat:
         info = await self._rpc.get_full_chat_by_id(self.account.id, self.id)
         return AttrDict(chat=self, **info)
 
+    async def can_send(self) -> bool:
+        """Return true if messages can be sent to the chat."""
+        return await self._rpc.can_send(self.account.id, self.id)
+
     async def send_message(
         self,
         text: Optional[str] = None,
@@ -126,7 +130,7 @@ class Chat:
             "file": file,
             "location": location,
             "overrideSenderName": override_sender_name,
-            "quotedMsg": quoted_msg,
+            "quotedMessageId": quoted_msg,
         }
         msg_id = await self._rpc.send_msg(self.account.id, self.id, draft)
         return Message(self.account, msg_id)

deltachat-rpc-client/src/deltachat_rpc_client/client.py

@@ -20,7 +20,7 @@ from ._utils import (
     parse_system_image_changed,
     parse_system_title_changed,
 )
-from .const import COMMAND_PREFIX, EventType, SystemMessageType
+from .const import COMMAND_PREFIX, EventType, SpecialContactId, SystemMessageType
 from .events import (
     EventFilter,
     GroupImageChanged,
@@ -189,9 +189,10 @@ class Client:
 
     async def _process_messages(self) -> None:
         if self._should_process_messages:
-            for message in await self.account.get_fresh_messages_in_arrival_order():
+            for message in await self.account.get_next_messages():
                 snapshot = await message.get_snapshot()
-                await self._on_new_msg(snapshot)
+                if snapshot.from_id not in [SpecialContactId.SELF, SpecialContactId.DEVICE]:
+                    await self._on_new_msg(snapshot)
                 if snapshot.is_info and snapshot.system_message_type != SystemMessageType.WEBXDC_INFO_MESSAGE:
                     await self._handle_info_msg(snapshot)
                 await snapshot.message.mark_seen()

deltachat-rpc-client/src/deltachat_rpc_client/const.py

@@ -31,6 +31,7 @@ class EventType(str, Enum):
     SMTP_MESSAGE_SENT = "SmtpMessageSent"
     IMAP_MESSAGE_DELETED = "ImapMessageDeleted"
     IMAP_MESSAGE_MOVED = "ImapMessageMoved"
+    IMAP_INBOX_IDLE = "ImapInboxIdle"
     NEW_BLOB_FILE = "NewBlobFile"
     DELETED_BLOB_FILE = "DeletedBlobFile"
     WARNING = "Warning"

deltachat-rpc-client/src/deltachat_rpc_client/message.py

@@ -1,6 +1,6 @@
 import json
 from dataclasses import dataclass
-from typing import TYPE_CHECKING, Union
+from typing import TYPE_CHECKING, Optional, Union
 
 from ._utils import AttrDict
 from .contact import Contact
@@ -35,6 +35,13 @@ class Message:
         snapshot["message"] = self
         return snapshot
 
+    async def get_reactions(self) -> Optional[AttrDict]:
+        """Get message reactions."""
+        reactions = await self._rpc.get_message_reactions(self.account.id, self.id)
+        if reactions:
+            return AttrDict(reactions)
+        return None
+
     async def mark_seen(self) -> None:
         """Mark the message as seen."""
         await self._rpc.markseen_msgs(self.account.id, [self.id])

deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py

@@ -55,6 +55,11 @@ class ACFactory:
     async def get_online_account(self) -> Account:
         account = await self.new_configured_account()
         await account.start_io()
+        while True:
+            event = await account.wait_for_event()
+            print(event)
+            if event.type == EventType.IMAP_INBOX_IDLE:
+                break
         return account
 
     async def get_online_accounts(self, num: int) -> List[Account]:

deltachat-rpc-client/src/deltachat_rpc_client/rpc.py

@@ -23,7 +23,9 @@ class Rpc:
         self.event_queues: Dict[int, asyncio.Queue]
         # Map from request ID to `asyncio.Future` returning the response.
         self.request_events: Dict[int, asyncio.Future]
+        self.closing: bool
         self.reader_task: asyncio.Task
+        self.events_task: asyncio.Task
 
     async def start(self) -> None:
         self.process = await asyncio.create_subprocess_exec(
@@ -35,10 +37,15 @@ class Rpc:
         self.id = 0
         self.event_queues = {}
         self.request_events = {}
+        self.closing = False
         self.reader_task = asyncio.create_task(self.reader_loop())
+        self.events_task = asyncio.create_task(self.events_loop())
 
     async def close(self) -> None:
         """Terminate RPC server process and wait until the reader loop finishes."""
+        self.closing = True
+        await self.stop_io_for_all_accounts()
+        await self.events_task
         self.process.terminate()
         await self.reader_task
 
@@ -58,21 +65,28 @@ class Rpc:
             if "id" in response:
                 fut = self.request_events.pop(response["id"])
                 fut.set_result(response)
-            elif response["method"] == "event":
-                # An event notification.
-                params = response["params"]
-                account_id = params["contextId"]
-                if account_id not in self.event_queues:
-                    self.event_queues[account_id] = asyncio.Queue()
-                await self.event_queues[account_id].put(params["event"])
             else:
                 print(response)
 
+    async def get_queue(self, account_id: int) -> asyncio.Queue:
+        if account_id not in self.event_queues:
+            self.event_queues[account_id] = asyncio.Queue()
+        return self.event_queues[account_id]
+
+    async def events_loop(self) -> None:
+        """Requests new events and distributes them between queues."""
+        while True:
+            if self.closing:
+                return
+            event = await self.get_next_event()
+            account_id = event["context_id"]
+            queue = await self.get_queue(account_id)
+            await queue.put(event["event"])
+
     async def wait_for_event(self, account_id: int) -> Optional[dict]:
         """Waits for the next event from the given account and returns it."""
-        if account_id in self.event_queues:
-            return await self.event_queues[account_id].get()
-        return None
+        queue = await self.get_queue(account_id)
+        return await queue.get()
 
     def __getattr__(self, attr: str):
         async def method(*args, **kwargs) -> Any:

deltachat-rpc-client/tests/test_something.py

@@ -98,8 +98,8 @@ async def test_account(acfactory) -> None:
     assert await alice.get_chatlist()
     assert await alice.get_chatlist(snapshot=True)
     assert await alice.get_qr_code()
-    await alice.get_fresh_messages()
-    await alice.get_fresh_messages_in_arrival_order()
+    assert await alice.get_fresh_messages()
+    assert await alice.get_next_messages()
 
     group = await alice.create_group("test group")
     await group.add_contact(alice_contact_bob)
@@ -147,7 +147,9 @@ async def test_chat(acfactory) -> None:
     assert alice_chat_bob != bob_chat_alice
     assert repr(alice_chat_bob)
     await alice_chat_bob.delete()
+    assert not await bob_chat_alice.can_send()
     await bob_chat_alice.accept()
+    assert await bob_chat_alice.can_send()
     await bob_chat_alice.block()
     bob_chat_alice = await snapshot.sender.create_chat()
     await bob_chat_alice.mute()
@@ -237,6 +239,10 @@ async def test_message(acfactory) -> None:
 
     await message.mark_seen()
     await message.send_reaction("😎")
+    reactions = await message.get_reactions()
+    assert reactions
+    snapshot = await message.get_snapshot()
+    assert reactions == snapshot.reactions
 
 
 @pytest.mark.asyncio()
@@ -303,3 +309,29 @@ async def test_bot(acfactory) -> None:
     await acfactory.process_message(from_account=user, to_client=bot, text="hello")
     event = await acfactory.process_message(from_account=user, to_client=bot, text="/help")
     mock.hook.assert_called_once_with(event.msg_id)
+
+
+@pytest.mark.asyncio()
+async def test_wait_next_messages(acfactory) -> None:
+    alice = await acfactory.new_configured_account()
+
+    # Create a bot account so it does not receive device messages in the beginning.
+    bot = await acfactory.new_preconfigured_account()
+    await bot.set_config("bot", "1")
+    await bot.configure()
+
+    # There are no old messages and the call returns immediately.
+    assert not await bot.wait_next_messages()
+
+    # Bot starts waiting for messages.
+    next_messages_task = asyncio.create_task(bot.wait_next_messages())
+
+    bot_addr = await bot.get_config("addr")
+    alice_contact_bot = await alice.create_contact(bot_addr, "Bob")
+    alice_chat_bot = await alice_contact_bot.create_chat()
+    await alice_chat_bot.send_text("Hello!")
+
+    next_messages = await next_messages_task
+    assert len(next_messages) == 1
+    snapshot = await next_messages[0].get_snapshot()
+    assert snapshot.text == "Hello!"

deltachat-rpc-client/tox.ini

@@ -15,6 +15,7 @@ passenv =
 deps =
     pytest
     pytest-asyncio
+    pytest-timeout
     aiohttp
     aiodns
 
@@ -25,5 +26,8 @@ deps =
     ruff
     black
 commands =
-    black --check --diff src/ examples/ tests/
+    black --quiet --check --diff src/ examples/ tests/
     ruff src/ examples/ tests/
+
+[pytest]
+timeout = 60

deltachat-rpc-server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "deltachat-rpc-server"
-version = "1.111.0"
+version = "1.114.0"
 description = "DeltaChat JSON-RPC server"
 edition = "2021"
 readme = "README.md"
@@ -9,19 +9,18 @@ license = "MPL-2.0"
 keywords = ["deltachat", "chat", "openpgp", "email", "encryption"]
 categories = ["cryptography", "std", "email"]
 
-[[bin]]
-name = "deltachat-rpc-server"
-
 [dependencies]
 deltachat-jsonrpc = { path = "../deltachat-jsonrpc", default-features = false }
+deltachat = { path = "..", default-features = false }
 
 anyhow = "1"
 env_logger = { version = "0.10.0" }
-futures-lite = "1.12.0"
+futures-lite = "1.13.0"
 log = "0.4"
-serde_json = "1.0.91"
+serde_json = "1.0.96"
 serde = { version = "1.0", features = ["derive"] }
-tokio = { version = "1.25.0", features = ["io-std"] }
+tokio = { version = "1.28.0", features = ["io-std"] }
+tokio-util = "0.7.8"
 yerpc = { version = "0.4.0", features = ["anyhow_expose"] }
 
 [features]

deltachat-rpc-server/src/bin/deltachat-rpc-server/main.rs

@@ -1,71 +0,0 @@
-///! Delta Chat core RPC server.
-///!
-///! It speaks JSON Lines over stdio.
-use std::path::PathBuf;
-
-use anyhow::Result;
-use deltachat_jsonrpc::api::events::event_to_json_rpc_notification;
-use deltachat_jsonrpc::api::{Accounts, CommandApi};
-use futures_lite::stream::StreamExt;
-use tokio::io::{self, AsyncBufReadExt, BufReader};
-use tokio::task::JoinHandle;
-use yerpc::{RpcClient, RpcSession};
-
-#[tokio::main(flavor = "multi_thread")]
-async fn main() -> Result<()> {
-    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
-
-    let path = std::env::var("DC_ACCOUNTS_PATH").unwrap_or_else(|_| "accounts".to_string());
-    log::info!("Starting with accounts directory `{}`.", path);
-    let accounts = Accounts::new(PathBuf::from(&path)).await?;
-    let events = accounts.get_event_emitter();
-
-    log::info!("Creating JSON-RPC API.");
-    let state = CommandApi::new(accounts);
-
-    let (client, mut out_receiver) = RpcClient::new();
-    let session = RpcSession::new(client.clone(), state);
-
-    // Events task converts core events to JSON-RPC notifications.
-    let events_task: JoinHandle<Result<()>> = tokio::spawn(async move {
-        while let Some(event) = events.recv().await {
-            let event = event_to_json_rpc_notification(event);
-            client.send_notification("event", Some(event)).await?;
-        }
-        Ok(())
-    });
-
-    // Send task prints JSON responses to stdout.
-    let send_task: JoinHandle<anyhow::Result<()>> = tokio::spawn(async move {
-        while let Some(message) = out_receiver.next().await {
-            let message = serde_json::to_string(&message)?;
-            log::trace!("RPC send {}", message);
-            println!("{message}");
-        }
-        Ok(())
-    });
-
-    // Receiver task reads JSON requests from stdin.
-    let recv_task: JoinHandle<anyhow::Result<()>> = tokio::spawn(async move {
-        let stdin = io::stdin();
-        let mut lines = BufReader::new(stdin).lines();
-        while let Some(message) = lines.next_line().await? {
-            log::trace!("RPC recv {}", message);
-            let session = session.clone();
-            tokio::spawn(async move {
-                session.handle_incoming(&message).await;
-            });
-        }
-        log::info!("EOF reached on stdin");
-        Ok(())
-    });
-
-    // Wait for the end of stdin.
-    recv_task.await??;
-
-    // Shutdown the server.
-    send_task.abort();
-    events_task.abort();
-
-    Ok(())
-}

deltachat-rpc-server/src/main.rs

@@ -0,0 +1,143 @@
+use std::env;
+///! Delta Chat core RPC server.
+///!
+///! It speaks JSON Lines over stdio.
+use std::path::PathBuf;
+use std::sync::Arc;
+
+use anyhow::{anyhow, Context as _, Result};
+use deltachat::constants::DC_VERSION_STR;
+use deltachat_jsonrpc::api::{Accounts, CommandApi};
+use futures_lite::stream::StreamExt;
+use tokio::io::{self, AsyncBufReadExt, BufReader};
+
+#[cfg(target_family = "unix")]
+use tokio::signal::unix as signal_unix;
+
+use tokio::sync::RwLock;
+use tokio::task::JoinHandle;
+use tokio_util::sync::CancellationToken;
+use yerpc::{RpcClient, RpcSession};
+
+#[tokio::main(flavor = "multi_thread")]
+async fn main() {
+    let r = main_impl().await;
+    // From tokio documentation:
+    // "For technical reasons, stdin is implemented by using an ordinary blocking read on a separate
+    // thread, and it is impossible to cancel that read. This can make shutdown of the runtime hang
+    // until the user presses enter."
+    std::process::exit(if r.is_ok() { 0 } else { 1 });
+}
+
+async fn main_impl() -> Result<()> {
+    let mut args = env::args_os();
+    let _program_name = args.next().context("no command line arguments found")?;
+    if let Some(first_arg) = args.next() {
+        if first_arg.to_str() == Some("--version") {
+            if let Some(arg) = args.next() {
+                return Err(anyhow!("Unrecognized argument {:?}", arg));
+            }
+            eprintln!("{}", &*DC_VERSION_STR);
+            return Ok(());
+        } else {
+            return Err(anyhow!("Unrecognized option {:?}", first_arg));
+        }
+    }
+    if let Some(arg) = args.next() {
+        return Err(anyhow!("Unrecognized argument {:?}", arg));
+    }
+
+    // Install signal handlers early so that the shutdown is graceful starting from here.
+    let _ctrl_c = tokio::signal::ctrl_c();
+    #[cfg(target_family = "unix")]
+    let mut sigterm = signal_unix::signal(signal_unix::SignalKind::terminate())?;
+
+    env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
+
+    let path = std::env::var("DC_ACCOUNTS_PATH").unwrap_or_else(|_| "accounts".to_string());
+    log::info!("Starting with accounts directory `{}`.", path);
+    let accounts = Accounts::new(PathBuf::from(&path)).await?;
+
+    log::info!("Creating JSON-RPC API.");
+    let accounts = Arc::new(RwLock::new(accounts));
+    let state = CommandApi::from_arc(accounts.clone());
+
+    let (client, mut out_receiver) = RpcClient::new();
+    let session = RpcSession::new(client.clone(), state.clone());
+    let main_cancel = CancellationToken::new();
+
+    // Send task prints JSON responses to stdout.
+    let cancel = main_cancel.clone();
+    let send_task: JoinHandle<anyhow::Result<()>> = tokio::spawn(async move {
+        let _cancel_guard = cancel.clone().drop_guard();
+        loop {
+            let message = tokio::select! {
+                _ = cancel.cancelled() => break,
+                message = out_receiver.next() => match message {
+                    None => break,
+                    Some(message) => serde_json::to_string(&message)?,
+                }
+            };
+            log::trace!("RPC send {}", message);
+            println!("{message}");
+        }
+        Ok(())
+    });
+
+    let cancel = main_cancel.clone();
+    let sigterm_task: JoinHandle<anyhow::Result<()>> = tokio::spawn(async move {
+        #[cfg(target_family = "unix")]
+        {
+            let _cancel_guard = cancel.clone().drop_guard();
+            tokio::select! {
+                _ = cancel.cancelled() => (),
+                _ = sigterm.recv() => {
+                    log::info!("got SIGTERM");
+                }
+            }
+        }
+        let _ = cancel;
+        Ok(())
+    });
+
+    // Receiver task reads JSON requests from stdin.
+    let cancel = main_cancel.clone();
+    let recv_task: JoinHandle<anyhow::Result<()>> = tokio::spawn(async move {
+        let _cancel_guard = cancel.clone().drop_guard();
+        let stdin = io::stdin();
+        let mut lines = BufReader::new(stdin).lines();
+
+        loop {
+            let message = tokio::select! {
+                _ = cancel.cancelled() => break,
+                _ = tokio::signal::ctrl_c() => {
+                    log::info!("got ctrl-c event");
+                    break;
+                }
+                message = lines.next_line() => match message? {
+                    None => {
+                        log::info!("EOF reached on stdin");
+                        break;
+                    }
+                    Some(message) => message,
+                }
+            };
+            log::trace!("RPC recv {}", message);
+            let session = session.clone();
+            tokio::spawn(async move {
+                session.handle_incoming(&message).await;
+            });
+        }
+        Ok(())
+    });
+
+    main_cancel.cancelled().await;
+    accounts.read().await.stop_io().await;
+    drop(accounts);
+    drop(state);
+    send_task.await??;
+    sigterm_task.await??;
+    recv_task.await??;
+
+    Ok(())
+}

deltachat_derive/Cargo.toml

@@ -8,5 +8,5 @@ license = "MPL-2.0"
 proc-macro = true
 
 [dependencies]
-syn = "1"
+syn = "2"
 quote = "1"

deny.toml

@@ -11,28 +11,53 @@ ignore = [
 # Accept some duplicate versions, ideally we work towards this list
 # becoming empty.  Adding versions forces us to revisit this at least
 # when upgrading.
+# Please keep this list alphabetically sorted.
 skip = [
-     { name = "windows-sys", version = "<0.45" },
-     { name = "wasi", version = "<0.11" },
-     { name = "version_check", version = "<0.9" },
-     { name = "uuid", version = "<1.3" },
-     { name = "sha2", version = "<0.10" },
-     { name = "rand_core", version = "<0.6" },
-     { name = "rand_chacha", version = "<0.3" },
-     { name = "rand", version = "<0.8" },
-     { name = "nom", version = "<7.1" },
-     { name = "idna", version = "<0.3" },
-     { name = "humantime", version = "<2.1" },
-     { name = "hermit-abi", version = "<0.3" },
-     { name = "getrandom", version = "<0.2" },
-     { name = "quick-error", version = "<2.0" },
-     { name = "env_logger", version = "<0.10" },
-     { name = "digest", version = "<0.10" },
-     { name = "darling_macro", version = "<0.14" },
-     { name = "darling_core", version = "<0.14" },
-     { name = "darling", version = "<0.14" },
-     { name = "block-buffer", version = "<0.10" },
+     { name = "base16ct", version = "0.1.1" },
      { name = "base64", version = "<0.21" },
+     { name = "bitflags", version = "1.3.2" },
+     { name = "block-buffer", version = "<0.10" },
+     { name = "clap_lex", version = "0.2.4" },
+     { name = "clap", version = "3.2.23" },
+     { name = "convert_case", version = "0.4.0" },
+     { name = "curve25519-dalek", version = "3.2.0" },
+     { name = "darling_core", version = "<0.14" },
+     { name = "darling_macro", version = "<0.14" },
+     { name = "darling", version = "<0.14" },
+     { name = "der", version = "0.6.1" },
+     { name = "digest", version = "<0.10" },
+     { name = "ed25519-dalek", version = "1.0.1" },
+     { name = "ed25519", version = "1.5.3" },
+     { name = "env_logger", version = "<0.10" },
+     { name = "getrandom", version = "<0.2" },
+     { name = "hermit-abi", version = "<0.3" },
+     { name = "humantime", version = "<2.1" },
+     { name = "idna", version = "<0.3" },
+     { name = "libm", version = "0.1.4" },
+     { name = "pem-rfc7468", version = "0.6.0" },
+     { name = "pkcs8", version = "0.9.0" },
+     { name = "quick-error", version = "<2.0" },
+     { name = "rand_chacha", version = "<0.3" },
+     { name = "rand_core", version = "<0.6" },
+     { name = "rand", version = "<0.8" },
+     { name = "redox_syscall", version = "0.2.16" },
+     { name = "sec1", version = "0.3.0" },
+     { name = "sha2", version = "<0.10" },
+     { name = "signature", version = "1.6.4" },
+     { name = "spin", version = "<0.9.6" },
+     { name = "spki", version = "0.6.0" },
+     { name = "syn", version = "1.0.109" },
+     { name = "time", version = "<0.3" },
+     { name = "wasi", version = "<0.11" },
+     { name = "windows_aarch64_gnullvm", version = "<0.48" },
+     { name = "windows_aarch64_msvc", version = "<0.48" },
+     { name = "windows_i686_gnu", version = "<0.48" },
+     { name = "windows_i686_msvc", version = "<0.48" },
+     { name = "windows-sys", version = "<0.48" },
+     { name = "windows-targets", version = "<0.48" },
+     { name = "windows_x86_64_gnullvm", version = "<0.48" },
+     { name = "windows_x86_64_gnu", version = "<0.48" },
+     { name = "windows_x86_64_msvc", version = "<0.48" },
 ]
 
 
@@ -42,11 +67,21 @@ allow = [
     "Apache-2.0",
     "BSD-2-Clause",
     "BSD-3-Clause",
-    "CC0-1.0",
-    "MIT",
     "BSL-1.0", # Boost Software License 1.0
-    "Unicode-DFS-2016",
+    "CC0-1.0",
+    "ISC",
+    "MIT",
     "MPL-2.0",
+    "OpenSSL",
+    "Unicode-DFS-2016",
+    "Zlib",
+]
+
+[[licenses.clarify]]
+name = "ring"
+expression = "MIT AND ISC AND OpenSSL"
+license-files = [
+      { path = "LICENSE", hash = 0xbd0eed23 },
 ]
 
 [sources.allow-org]
@@ -54,4 +89,5 @@ allow = [
 github = [
        "async-email",
        "deltachat",
+       "quinn-rs",
 ]

node/constants.js

@@ -37,6 +37,7 @@ module.exports = {
   DC_EVENT_ERROR: 400,
   DC_EVENT_ERROR_SELF_NOT_IN_GROUP: 410,
   DC_EVENT_IMAP_CONNECTED: 102,
+  DC_EVENT_IMAP_INBOX_IDLE: 106,
   DC_EVENT_IMAP_MESSAGE_DELETED: 104,
   DC_EVENT_IMAP_MESSAGE_MOVED: 105,
   DC_EVENT_IMEX_FILE_WRITTEN: 2052,
@@ -112,6 +113,7 @@ module.exports = {
   DC_QR_ADDR: 320,
   DC_QR_ASK_VERIFYCONTACT: 200,
   DC_QR_ASK_VERIFYGROUP: 202,
+  DC_QR_BACKUP: 251,
   DC_QR_ERROR: 400,
   DC_QR_FPR_MISMATCH: 220,
   DC_QR_FPR_OK: 210,
@@ -149,6 +151,8 @@ module.exports = {
   DC_STR_AEAP_EXPLANATION_AND_LINK: 123,
   DC_STR_ARCHIVEDCHATS: 40,
   DC_STR_AUDIO: 11,
+  DC_STR_BACKUP_TRANSFER_MSG_BODY: 163,
+  DC_STR_BACKUP_TRANSFER_QR: 162,
   DC_STR_BAD_TIME_MSG_BODY: 85,
   DC_STR_BROADCAST_LIST: 115,
   DC_STR_CANNOT_LOGIN: 60,

node/events.js

@@ -8,6 +8,7 @@ module.exports = {
   103: 'DC_EVENT_SMTP_MESSAGE_SENT',
   104: 'DC_EVENT_IMAP_MESSAGE_DELETED',
   105: 'DC_EVENT_IMAP_MESSAGE_MOVED',
+  106: 'DC_EVENT_IMAP_INBOX_IDLE',
   150: 'DC_EVENT_NEW_BLOB_FILE',
   151: 'DC_EVENT_DELETED_BLOB_FILE',
   300: 'DC_EVENT_WARNING',

node/lib/constants.ts

@@ -37,6 +37,7 @@ export enum C {
   DC_EVENT_ERROR = 400,
   DC_EVENT_ERROR_SELF_NOT_IN_GROUP = 410,
   DC_EVENT_IMAP_CONNECTED = 102,
+  DC_EVENT_IMAP_INBOX_IDLE = 106,
   DC_EVENT_IMAP_MESSAGE_DELETED = 104,
   DC_EVENT_IMAP_MESSAGE_MOVED = 105,
   DC_EVENT_IMEX_FILE_WRITTEN = 2052,
@@ -112,6 +113,7 @@ export enum C {
   DC_QR_ADDR = 320,
   DC_QR_ASK_VERIFYCONTACT = 200,
   DC_QR_ASK_VERIFYGROUP = 202,
+  DC_QR_BACKUP = 251,
   DC_QR_ERROR = 400,
   DC_QR_FPR_MISMATCH = 220,
   DC_QR_FPR_OK = 210,
@@ -149,6 +151,8 @@ export enum C {
   DC_STR_AEAP_EXPLANATION_AND_LINK = 123,
   DC_STR_ARCHIVEDCHATS = 40,
   DC_STR_AUDIO = 11,
+  DC_STR_BACKUP_TRANSFER_MSG_BODY = 163,
+  DC_STR_BACKUP_TRANSFER_QR = 162,
   DC_STR_BAD_TIME_MSG_BODY = 85,
   DC_STR_BROADCAST_LIST = 115,
   DC_STR_CANNOT_LOGIN = 60,
@@ -289,6 +293,7 @@ export const EventId2EventName: { [key: number]: string } = {
   103: 'DC_EVENT_SMTP_MESSAGE_SENT',
   104: 'DC_EVENT_IMAP_MESSAGE_DELETED',
   105: 'DC_EVENT_IMAP_MESSAGE_MOVED',
+  106: 'DC_EVENT_IMAP_INBOX_IDLE',
   150: 'DC_EVENT_NEW_BLOB_FILE',
   151: 'DC_EVENT_DELETED_BLOB_FILE',
   300: 'DC_EVENT_WARNING',

package.json

@@ -60,5 +60,5 @@
     "test:mocha": "mocha -r esm node/test/test.js --growl --reporter=spec --bail --exit"
   },
   "types": "node/dist/index.d.ts",
-  "version": "1.111.0"
-}
+  "version": "1.114.0"
+}

python/README.rst

@@ -12,17 +12,17 @@ a low-level Chat/Contact/Message API to user interfaces and bots.
 Installing pre-built packages (Linux-only)
 ==========================================
 
-If you have a Linux system you may try to install the ``deltachat`` binary "wheel" packages
+If you have a Linux system you may install the ``deltachat`` binary "wheel" packages
 without any "build-from-source" steps.
 Otherwise you need to `compile the Delta Chat bindings yourself`__.
 
 __ sourceinstall_
 
-We recommend to first `install virtualenv <https://virtualenv.pypa.io/en/stable/installation.html>`_,
-then create a fresh Python virtual environment and activate it in your shell::
+We recommend to first create a fresh Python virtual environment
+and activate it in your shell::
 
-        virtualenv env  # or: python -m venv
-        source env/bin/activate
+    python -m venv env
+    source env/bin/activate
 
 Afterwards, invoking ``python`` or ``pip install`` only
 modifies files in your ``env`` directory and leaves
@@ -40,16 +40,14 @@ To verify it worked::
 Running tests
 =============
 
-Recommended way to run tests is using `tox <https://tox.wiki>`_.
-After successful binding installation you can install tox
-and run the tests::
+Recommended way to run tests is using `scripts/run-python-test.sh`
+script provided in the core repository.
 
-    pip install tox
-    tox -e py3
-
-This will run all "offline" tests and skip all functional
+This script compiles the library in debug mode and runs the tests using `tox`_.
+By default it will run all "offline" tests and skip all functional
 end-to-end tests that require accounts on real e-mail servers.
 
+.. _`tox`: https://tox.wiki
 .. _livetests:
 
 Running "live" tests with temporary accounts
@@ -61,13 +59,32 @@ Please feel free to contact us through a github issue or by e-mail and we'll sen
 
     export DCC_NEW_TMP_EMAIL=<URL you got from us>
 
-With this account-creation setting, pytest runs create ephemeral e-mail accounts on the http://testrun.org server.  These accounts exists only for one hour and then are removed completely.
-One hour is enough to invoke pytest and run all offline and online tests::
+With this account-creation setting, pytest runs create ephemeral e-mail accounts on the http://testrun.org server.
+These accounts are removed automatically as they expire.
+After setting the variable, either rerun `scripts/run-python-test.sh`
+or run offline and online tests with `tox` directly::
 
-    tox -e py3
+    tox -e py
 
 Each test run creates new accounts.
 
+Developing the bindings
+-----------------------
+
+If you want to develop or debug the bindings,
+you can create a testing development environment using `tox`::
+
+    tox -c python --devenv env
+    . env/bin/activate
+
+Inside this environment the bindings are installed
+in editable mode (as if installed with `python -m pip install -e`)
+together with the testing dependencies like `pytest` and its plugins.
+
+You can then edit the source code in the development tree
+and quickly run `pytest` manually without waiting  for `tox`
+to recreating the virtual environment each time.
+
 .. _sourceinstall:
 
 Installing bindings from source
@@ -89,20 +106,34 @@ To install the Delta Chat Python bindings make sure you have Python3 installed.
 E.g. on Debian-based systems `apt install python3 python3-pip
 python3-venv` should give you a usable python installation.
 
-Ensure you are in the deltachat-core-rust/python directory, create the
-virtual environment with dependencies using tox
-and activate it in your shell::
+First, build the core library::
 
-   cd python
-   tox --devenv env
+   cargo build --release -p deltachat_ffi --features jsonrpc
+
+`jsonrpc` feature is required even if not used by the bindings
+because `deltachat.h` includes JSON-RPC functions unconditionally.
+
+Create the virtual environment and activate it:
+
+   python -m venv env
    source env/bin/activate
 
-You should now be able to build the python bindings using the supplied script::
+Build and install the bindings:
 
-   python3 install_python_bindings.py
+   export DCC_RS_DEV="$PWD"
+   export DCC_RS_TARGET=release
+   python -m pip install ./python
 
-The core compilation and bindings building might take a while,
-depending on the speed of your machine.
+`DCC_RS_DEV` environment variable specifies the location of
+the core development tree. If this variable is not set,
+`libdeltachat` library and `deltachat.h` header are expected
+to be installed system-wide.
+
+When `DCC_RS_DEV` is set, `DCC_RS_TARGET` specifies
+the build profile name to look up the artifacts
+in the target directory.
+In this case setting it can be skipped because
+`DCC_RS_TARGET=release` is the default.
 
 Building manylinux based wheels
 ===============================

python/examples/test_examples.py

@@ -24,6 +24,8 @@ def test_echo_quit_plugin(acfactory, lp):
     lp.sec("creating a temp account to contact the bot")
     (ac1,) = acfactory.get_online_accounts(1)
 
+    botproc.await_resync()
+
     lp.sec("sending a message to the bot")
     bot_contact = ac1.create_contact(botproc.addr)
     bot_chat = bot_contact.create_chat()
@@ -40,7 +42,7 @@ def test_echo_quit_plugin(acfactory, lp):
 
 def test_group_tracking_plugin(acfactory, lp):
     lp.sec("creating one group-tracking bot and two temp accounts")
-    botproc = acfactory.run_bot_process(group_tracking, ffi=False)
+    botproc = acfactory.run_bot_process(group_tracking)
 
     ac1, ac2 = acfactory.get_online_accounts(2)
 
@@ -52,6 +54,8 @@ def test_group_tracking_plugin(acfactory, lp):
     ac1.add_account_plugin(FFIEventLogger(ac1))
     ac2.add_account_plugin(FFIEventLogger(ac2))
 
+    botproc.await_resync()
+
     lp.sec("creating bot test group with bot")
     bot_contact = ac1.create_contact(botproc.addr)
     ch = ac1.create_group_chat("bot test group")

python/install_python_bindings.py

@@ -1,30 +0,0 @@
-#!/usr/bin/env python3
-
-"""
- setup a python binding development in-place install with cargo debug symbols.
-"""
-
-import os
-import subprocess
-import sys
-
-if __name__ == "__main__":
-    target = os.environ.get("DCC_RS_TARGET")
-    if target is None:
-        os.environ["DCC_RS_TARGET"] = target = "debug"
-    if "DCC_RS_DEV" not in os.environ:
-        dn = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
-        os.environ["DCC_RS_DEV"] = dn
-
-    cmd = ["cargo", "build", "-p", "deltachat_ffi", "--features", "jsonrpc"]
-
-    if target == "release":
-        os.environ["CARGO_PROFILE_RELEASE_LTO"] = "on"
-        cmd.append("--release")
-
-    print("running:", " ".join(cmd))
-    subprocess.check_call(cmd)
-    subprocess.check_call("rm -rf build/ src/deltachat/*.so src/deltachat/*.dylib src/deltachat/*.dll", shell=True)
-
-    if len(sys.argv) <= 1 or sys.argv[1] != "onlybuild":
-        subprocess.check_call([sys.executable, "-m", "pip", "install", "-e", "."])

python/src/deltachat/account.py

@@ -376,6 +376,22 @@ class Account:
         dc_array = ffi.gc(lib.dc_get_fresh_msgs(self._dc_context), lib.dc_array_unref)
         return (x for x in iter_array(dc_array, lambda x: Message.from_db(self, x)) if x is not None)
 
+    def _wait_next_message_ids(self) -> List[int]:
+        """Return IDs of all next messages from all chats."""
+        dc_array = ffi.gc(lib.dc_wait_next_msgs(self._dc_context), lib.dc_array_unref)
+        return [lib.dc_array_get_id(dc_array, i) for i in range(lib.dc_array_get_cnt(dc_array))]
+
+    def wait_next_incoming_message(self) -> Message:
+        """Waits until the next incoming message
+        with ID higher than given is received and returns it."""
+        while True:
+            message_ids = self._wait_next_message_ids()
+            for msg_id in message_ids:
+                message = Message.from_db(self, msg_id)
+                if message and not message.is_from_self() and not message.is_from_device():
+                    self.set_config("last_msg_id", str(msg_id))
+                    return message
+
     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()

python/src/deltachat/events.py

@@ -190,7 +190,7 @@ class FFIEventTracker:
         - ac2 is still running FetchExsistingMsgs job and thinks it's an existing, old message
         - therefore no DC_EVENT_INCOMING_MSG is sent
         """
-        self.get_info_contains("INBOX: Idle entering")
+        self.get_matching("DC_EVENT_IMAP_INBOX_IDLE")
 
     def wait_next_incoming_message(self):
         """wait for and return next incoming message."""

python/src/deltachat/message.py

@@ -344,6 +344,16 @@ class Message:
         contact_id = lib.dc_msg_get_from_id(self._dc_msg)
         return Contact(self.account, contact_id)
 
+    def is_from_self(self):
+        """Return true if the message is sent by self."""
+        contact_id = lib.dc_msg_get_from_id(self._dc_msg)
+        return contact_id == const.DC_CONTACT_ID_SELF
+
+    def is_from_device(self):
+        """Return true if the message is sent by the device."""
+        contact_id = lib.dc_msg_get_from_id(self._dc_msg)
+        return contact_id == const.DC_CONTACT_ID_DEVICE
+
     #
     # Message State query methods
     #

python/src/deltachat/testplugin.py

@@ -676,6 +676,13 @@ class BotProcess:
                     print("+++IGN:", line)
                     ignored.append(line)
 
+    def await_resync(self):
+        self.fnmatch_lines(
+            """
+            *Resync: collected * message IDs in folder INBOX*
+        """,
+        )
+
 
 @pytest.fixture()
 def tmp_db_path(tmpdir):

python/tests/auditwheels.py

@@ -1,19 +0,0 @@
-import os
-import subprocess
-import sys
-
-if __name__ == "__main__":
-    assert len(sys.argv) == 2
-    workspacedir = sys.argv[1]
-    for relpath in os.listdir(workspacedir):
-        if relpath.startswith("deltachat"):
-            p = os.path.join(workspacedir, relpath)
-            subprocess.check_call(
-                [
-                    "auditwheel",
-                    "repair",
-                    p,
-                    "-w",
-                    workspacedir,
-                ],
-            )

python/tests/test_0_complex_or_slow.py

@@ -220,16 +220,16 @@ def test_fetch_existing(acfactory, lp, mvbox_move):
     acfactory.bring_accounts_online()
     assert_folders_configured(ac1)
 
-    assert ac1.direct_imap.select_config_folder("mvbox" if mvbox_move else "inbox")
-    with ac1.direct_imap.idle() as idle1:
-        lp.sec("send out message with bcc to ourselves")
-        ac1.set_config("bcc_self", "1")
-        chat = acfactory.get_accepted_chat(ac1, ac2)
-        chat.send_text("message text")
-        assert_folders_configured(ac1)
+    lp.sec("send out message with bcc to ourselves")
+    ac1.set_config("bcc_self", "1")
+    chat = acfactory.get_accepted_chat(ac1, ac2)
+    chat.send_text("message text")
 
-        lp.sec("wait until the bcc_self message arrives in correct folder and is marked seen")
-        assert idle1.wait_for_seen()
+    lp.sec("wait until the bcc_self message arrives in correct folder and is marked seen")
+    if mvbox_move:
+        ac1._evtracker.get_info_contains("Marked messages [0-9]+ in folder DeltaChat as seen.")
+    else:
+        ac1._evtracker.get_info_contains("Marked messages [0-9]+ in folder INBOX as seen.")
     assert_folders_configured(ac1)
 
     lp.sec("create a cloned ac1 and fetch contact history during configure")
@@ -271,12 +271,12 @@ def test_fetch_existing_msgs_group_and_single(acfactory, lp):
     ac1._evtracker.wait_next_incoming_message()
 
     lp.sec("send out message with bcc to ourselves")
-    with ac1.direct_imap.idle() as idle1:
-        ac1.set_config("bcc_self", "1")
-        ac1_ac2_chat = ac1.create_chat(ac2)
-        ac1_ac2_chat.send_text("outgoing, encrypted direct message, creating a chat")
-        # wait until the bcc_self message arrives
-        assert idle1.wait_for_seen()
+    ac1.set_config("bcc_self", "1")
+    ac1_ac2_chat = ac1.create_chat(ac2)
+    ac1_ac2_chat.send_text("outgoing, encrypted direct message, creating a chat")
+
+    # wait until the bcc_self message arrives
+    ac1._evtracker.get_info_contains("Marked messages [0-9]+ in folder INBOX as seen.")
 
     lp.sec("Clone online account and let it fetch the existing messages")
     ac1_clone = acfactory.new_online_configuring_account(cloned_from=ac1)

python/tests/test_1_online.py

@@ -44,21 +44,21 @@ def test_configure_generate_key(acfactory, lp):
     lp.sec("ac1: send unencrypted message to ac2")
     chat.send_text("message1")
     lp.sec("ac2: waiting for message from ac1")
-    msg_in = ac2._evtracker.wait_next_incoming_message()
+    msg_in = ac2.wait_next_incoming_message()
     assert msg_in.text == "message1"
     assert not msg_in.is_encrypted()
 
     lp.sec("ac2: send encrypted message to ac1")
     msg_in.chat.send_text("message2")
     lp.sec("ac1: waiting for message from ac2")
-    msg2_in = ac1._evtracker.wait_next_incoming_message()
+    msg2_in = ac1.wait_next_incoming_message()
     assert msg2_in.text == "message2"
     assert msg2_in.is_encrypted()
 
     lp.sec("ac1: send encrypted message to ac2")
     msg2_in.chat.send_text("message3")
     lp.sec("ac2: waiting for message from ac1")
-    msg3_in = ac2._evtracker.wait_next_incoming_message()
+    msg3_in = ac2.wait_next_incoming_message()
     assert msg3_in.text == "message3"
     assert msg3_in.is_encrypted()
 
@@ -134,22 +134,27 @@ def test_one_account_send_bcc_setting(acfactory, lp):
     ac1.set_config("bcc_self", "1")
 
     lp.sec("send out message with bcc to ourselves")
-    with ac1.direct_imap.idle() as idle1:
-        msg_out = chat.send_text("message2")
+    msg_out = chat.send_text("message2")
 
-        # wait for send out (BCC)
-        ev = ac1._evtracker.get_matching("DC_EVENT_SMTP_MESSAGE_SENT")
-        assert ac1.get_config("bcc_self") == "1"
+    # wait for send out (BCC)
+    ev = ac1._evtracker.get_matching("DC_EVENT_SMTP_MESSAGE_SENT")
+    assert ac1.get_config("bcc_self") == "1"
 
-        # now make sure we are sending message to ourselves too
-        assert self_addr in ev.data2
-        assert other_addr in ev.data2
-        assert idle1.wait_for_seen()
-
-    # Second client receives only second message, but not the first
+    # Second client receives only second message, but not the first.
     ev_msg = ac1_clone._evtracker.wait_next_messages_changed()
     assert ev_msg.text == msg_out.text
 
+    # now make sure we are sending message to ourselves too
+    assert self_addr in ev.data2
+    assert other_addr in ev.data2
+
+    # BCC-self messages are marked as seen by the sender device.
+    ac1._evtracker.get_info_contains("Marked messages [0-9]+ in folder INBOX as seen.")
+
+    # Check that the message is marked as seen on IMAP.
+    ac1.direct_imap.select_folder("Inbox")
+    assert len(list(ac1.direct_imap.conn.fetch(AND(seen=True)))) == 1
+
 
 def test_send_file_twice_unicode_filename_mangling(tmpdir, acfactory, lp):
     ac1, ac2 = acfactory.get_online_accounts(2)
@@ -314,6 +319,9 @@ def test_webxdc_message(acfactory, data, lp):
     assert msg2.text == "message1"
     assert msg2.is_webxdc()
     assert msg2.filename
+    ac2._evtracker.get_info_contains("Marked messages [0-9]+ in folder INBOX as seen.")
+    ac2.direct_imap.select_folder("Inbox")
+    assert len(list(ac2.direct_imap.conn.fetch(AND(seen=True)))) == 1
 
 
 def test_mvbox_sentbox_threads(acfactory, lp):
@@ -513,22 +521,22 @@ def test_send_and_receive_message_markseen(acfactory, lp):
     msg4 = ac2._evtracker.wait_next_incoming_message()
 
     lp.sec("mark messages as seen on ac2, wait for changes on ac1")
-    with ac1.direct_imap.idle() as idle1:
-        with ac2.direct_imap.idle() as idle2:
-            ac2.mark_seen_messages([msg2, msg4])
-            ev = ac2._evtracker.get_matching("DC_EVENT_MSGS_NOTICED")
-            assert msg2.chat.id == msg4.chat.id
-            assert ev.data1 == msg2.chat.id
-            assert ev.data2 == 0
-            idle2.wait_for_seen()
+    ac2.mark_seen_messages([msg2, msg4])
+    ev = ac2._evtracker.get_matching("DC_EVENT_MSGS_NOTICED")
+    assert msg2.chat.id == msg4.chat.id
+    assert ev.data1 == msg2.chat.id
+    assert ev.data2 == 0
+    ac2._evtracker.get_info_contains("Marked messages .* in folder INBOX as seen.")
 
-        lp.step("1")
-        for _i in range(2):
-            ev = ac1._evtracker.get_matching("DC_EVENT_MSG_READ")
-            assert ev.data1 > const.DC_CHAT_ID_LAST_SPECIAL
-            assert ev.data2 > const.DC_MSG_ID_LAST_SPECIAL
-        lp.step("2")
-        idle1.wait_for_seen()  # Check that ac1 marks the read receipt as read
+    lp.step("1")
+    for _i in range(2):
+        ev = ac1._evtracker.get_matching("DC_EVENT_MSG_READ")
+        assert ev.data1 > const.DC_CHAT_ID_LAST_SPECIAL
+        assert ev.data2 > const.DC_MSG_ID_LAST_SPECIAL
+    lp.step("2")
+
+    # Check that ac1 marks the read receipt as read.
+    ac1._evtracker.get_info_contains("Marked messages .* in folder INBOX as seen.")
 
     assert msg1.is_out_mdn_received()
     assert msg3.is_out_mdn_received()
@@ -559,7 +567,8 @@ def test_moved_markseen(acfactory):
 
     with ac2.direct_imap.idle() as idle2:
         ac2.start_io()
-        msg = ac2._evtracker.wait_next_incoming_message()
+        ev = ac2._evtracker.get_matching("DC_EVENT_INCOMING_MSG|DC_EVENT_MSGS_CHANGED")
+        msg = ac2.get_message_by_id(ev.data2)
 
         # Accept the contact request.
         msg.chat.accept()
@@ -613,18 +622,24 @@ def test_markseen_message_and_mdn(acfactory, mvbox_move):
     # Do not send BCC to self, we only want to test MDN on ac1.
     ac1.set_config("bcc_self", "0")
 
+    acfactory.get_accepted_chat(ac1, ac2).send_text("hi")
+    msg = ac2._evtracker.wait_next_incoming_message()
+
+    ac2.mark_seen_messages([msg])
+
     folder = "mvbox" if mvbox_move else "inbox"
+    for ac in [ac1, ac2]:
+        if mvbox_move:
+            ac._evtracker.get_info_contains("Marked messages [0-9]+ in folder DeltaChat as seen.")
+        else:
+            ac._evtracker.get_info_contains("Marked messages [0-9]+ in folder INBOX as seen.")
     ac1.direct_imap.select_config_folder(folder)
     ac2.direct_imap.select_config_folder(folder)
-    with ac1.direct_imap.idle() as idle1:
-        with ac2.direct_imap.idle() as idle2:
-            acfactory.get_accepted_chat(ac1, ac2).send_text("hi")
-            msg = ac2._evtracker.wait_next_incoming_message()
 
-            ac2.mark_seen_messages([msg])
-
-            idle2.wait_for_seen()  # Check original message is marked as seen
-            idle1.wait_for_seen()  # Check that the mdn is marked as seen
+    # Check that the mdn is marked as seen
+    assert len(list(ac1.direct_imap.conn.fetch(AND(seen=True)))) == 1
+    # Check original message is marked as seen
+    assert len(list(ac2.direct_imap.conn.fetch(AND(seen=True)))) == 1
 
 
 def test_reply_privately(acfactory):
@@ -678,23 +693,24 @@ def test_mdn_asymmetric(acfactory, lp):
 
     assert len(msg.chat.get_messages()) == 1
 
-    ac1.direct_imap.select_config_folder("mvbox")
-    with ac1.direct_imap.idle() as idle1:
-        lp.sec("ac2: mark incoming message as seen")
-        ac2.mark_seen_messages([msg])
+    lp.sec("ac2: mark incoming message as seen")
+    ac2.mark_seen_messages([msg])
 
-        lp.sec("ac1: waiting for incoming activity")
-        # MDN should be moved even though MDNs are already disabled
-        ac1._evtracker.get_matching("DC_EVENT_IMAP_MESSAGE_MOVED")
+    lp.sec("ac1: waiting for incoming activity")
+    # MDN should be moved even though MDNs are already disabled
+    ac1._evtracker.get_matching("DC_EVENT_IMAP_MESSAGE_MOVED")
 
-        assert len(chat.get_messages()) == 1
+    assert len(chat.get_messages()) == 1
 
-        # Wait for the message to be marked as seen on IMAP.
-        assert idle1.wait_for_seen()
+    # Wait for the message to be marked as seen on IMAP.
+    ac1._evtracker.get_info_contains("Marked messages 1 in folder DeltaChat as seen.")
 
     # MDN is received even though MDNs are already disabled
     assert msg_out.is_out_mdn_received()
 
+    ac1.direct_imap.select_config_folder("mvbox")
+    assert len(list(ac1.direct_imap.conn.fetch(AND(seen=True)))) == 1
+
 
 def test_send_and_receive_will_encrypt_decrypt(acfactory, lp):
     ac1, ac2 = acfactory.get_online_accounts(2)

python/tox.ini

@@ -33,18 +33,6 @@ passenv =
     CARGO_TARGET_DIR
     RUSTC_WRAPPER
 
-[testenv:auditwheels]
-skipsdist = True
-deps = auditwheel
-passenv =
-    DCC_RS_DEV
-    DCC_RS_TARGET
-    AUDITWHEEL_ARCH
-    AUDITWHEEL_PLAT
-    AUDITWHEEL_POLICY
-commands = 
-    python tests/auditwheels.py {toxworkdir}/wheelhouse
-
 [testenv:lint]
 skipsdist = True
 skip_install = True
@@ -55,7 +43,7 @@ deps =
     pygments
     restructuredtext_lint 
 commands =
-    black --check --diff setup.py install_python_bindings.py src/deltachat examples/ tests/
+    black --quiet --check --diff setup.py src/deltachat examples/ tests/
     ruff src/deltachat tests/ examples/
     rst-lint --encoding 'utf-8' README.rst
 

release-date.in

@@ -0,0 +1 @@
+2023-04-24

scripts/README.md

@@ -8,6 +8,8 @@ and an own build machine.
 
 - `clippy.sh` runs `cargo clippy` for all Rust code in the project.
 
+- `deny.sh` runs `cargo deny` for all Rust code in the project.
+
 - `../.github/workflows` contains jobs run by GitHub Actions.
 
 - `remote_tests_python.sh` rsyncs to a build machine and runs

scripts/android-rpc-server.sh

@@ -1,43 +0,0 @@
-#!/bin/sh
-# Build deltachat-rpc-server for Android.
-
-set -e
-
-test -n "$ANDROID_NDK_ROOT" || exit 1
-
-RUSTUP_TOOLCHAIN="1.64.0"
-rustup install "$RUSTUP_TOOLCHAIN"
-rustup target add armv7-linux-androideabi aarch64-linux-android i686-linux-android x86_64-linux-android --toolchain "$RUSTUP_TOOLCHAIN"
-
-KERNEL="$(uname -s | tr '[:upper:]' '[:lower:]')"
-ARCH="$(uname -m)"
-NDK_HOST_TAG="$KERNEL-$ARCH"
-TOOLCHAIN="$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/$NDK_HOST_TAG"
-
-PACKAGE="deltachat-rpc-server"
-
-export CARGO_PROFILE_RELEASE_LTO=on
-
-CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER="$TOOLCHAIN/bin/armv7a-linux-androideabi16-clang" \
-	TARGET_CC="$TOOLCHAIN/bin/armv7a-linux-androideabi16-clang" \
-	TARGET_AR="$TOOLCHAIN/bin/llvm-ar" \
-	TARGET_RANLIB="$TOOLCHAIN/bin/llvm-ranlib" \
-	cargo "+$RUSTUP_TOOLCHAIN" rustc --release --target armv7-linux-androideabi -p $PACKAGE
-
-CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER="$TOOLCHAIN/bin/aarch64-linux-android21-clang" \
-	TARGET_CC="$TOOLCHAIN/bin/aarch64-linux-android21-clang" \
-	TARGET_AR="$TOOLCHAIN/bin/llvm-ar" \
-	TARGET_RANLIB="$TOOLCHAIN/bin/llvm-ranlib" \
-	cargo "+$RUSTUP_TOOLCHAIN" rustc --release --target aarch64-linux-android -p $PACKAGE
-
-CARGO_TARGET_I686_LINUX_ANDROID_LINKER="$TOOLCHAIN/bin/i686-linux-android16-clang" \
-	TARGET_CC="$TOOLCHAIN/bin/i686-linux-android16-clang" \
-	TARGET_AR="$TOOLCHAIN/bin/llvm-ar" \
-	TARGET_RANLIB="$TOOLCHAIN/bin/llvm-ranlib" \
-	cargo "+$RUSTUP_TOOLCHAIN" rustc --release --target i686-linux-android -p $PACKAGE
-
-CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER="$TOOLCHAIN/bin/x86_64-linux-android21-clang" \
-	TARGET_CC="$TOOLCHAIN/bin/x86_64-linux-android21-clang" \
-	TARGET_AR="$TOOLCHAIN/bin/llvm-ar" \
-	TARGET_RANLIB="$TOOLCHAIN/bin/llvm-ranlib" \
-	cargo "+$RUSTUP_TOOLCHAIN" rustc --release --target x86_64-linux-android -p $PACKAGE

scripts/create-provider-data-rs.py

@@ -233,7 +233,7 @@ if __name__ == "__main__":
     else:
         now = datetime.datetime.fromisoformat(sys.argv[2])
     out_all += (
-        "pub static PROVIDER_UPDATED: Lazy<chrono::NaiveDate> = "
+        "pub static _PROVIDER_UPDATED: Lazy<chrono::NaiveDate> = "
         "Lazy::new(|| chrono::NaiveDate::from_ymd_opt("
         + str(now.year)
         + ", "

scripts/deny.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# Update package cache without changing the lockfile.
+cargo update --dry-run
+
+cargo deny --workspace --all-features check -D warnings

scripts/release.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import sys
+import subprocess
+import set_core_version
+from argparse import ArgumentParser
+
+
+# update the version
+parser = ArgumentParser(prog="release")
+parser.add_argument("newversion")
+
+try:
+    newversion = parser.parse_args().newversion
+except SystemExit:
+    newversion = None
+set_core_version.set_version(newversion)
+
+tag = "v" + newversion
+
+# TODO would be nice to automatically checkout the correct branch
+
+# update the changelog
+print(f"Updating CHANGELOG.md using git cliff --unreleased --tag {newversion} --prepend CHANGELOG.md")
+changelog = subprocess.run(["git", "cliff", "--unreleased", "--tag", newversion, "--prepend", "CHANGELOG.md"]).stdout.strip()
+subprocess.run(["git", "add", "-A"])
+subprocess.run(["git", "commit", "-m", f"chore(release): prepare for {tag}"])
+subprocess.run(["git", "show"])
+
+# create a tag
+subprocess.run(
+    [
+        "git", "tag", "-a", tag, "-m", f"Release {tag}", "-m", changelog
+    ]
+)
+subprocess.run(["git", "tag", "-v", tag])
+
+print("Done!")
+print(f"Now push the commit (git push origin {tag}).")

scripts/run-python-test.sh

@@ -12,7 +12,7 @@ export DCC_RS_DEV=`pwd`
 
 cd python
 
-python install_python_bindings.py onlybuild
+cargo build -p deltachat_ffi --features jsonrpc
 
 # remove and inhibit writing PYC files 
 rm -rf tests/__pycache__
@@ -22,4 +22,5 @@ export PYTHONDONTWRITEBYTECODE=1
 # run python tests (tox invokes pytest to run tests in python/tests)
 #TOX_PARALLEL_NO_SPINNER=1 tox -e lint,doc
 tox -e lint
-tox -e doc,py3
+tox -e doc
+tox -e py -- "$@"

scripts/run_all.sh

@@ -31,7 +31,9 @@ unset DCC_NEW_TMP_EMAIL
 
 # Try to build wheels for a range of interpreters, but don't fail if they are not available.
 # E.g. musllinux_1_1 does not have PyPy interpreters as of 2022-07-10
-tox --workdir "$TOXWORKDIR" -e py37,py38,py39,py310,py311,pypy37,pypy38,pypy39,auditwheels --skip-missing-interpreters true
+tox --workdir "$TOXWORKDIR" -e py37,py38,py39,py310,py311,pypy37,pypy38,pypy39 --skip-missing-interpreters true
+
+auditwheel repair "$TOXWORKDIR"/wheelhouse/deltachat* -w "$TOXWORKDIR/wheelhouse"
 
 
 echo -----------------------

scripts/set_core_version.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import datetime
 import json
 import os
 import pathlib
@@ -8,7 +9,14 @@ import subprocess
 from argparse import ArgumentParser
 
 rex = re.compile(r'version = "(\S+)"')
-
+json_list = ["package.json", "deltachat-jsonrpc/typescript/package.json"]
+toml_list = [
+    "Cargo.toml",
+    "deltachat-ffi/Cargo.toml",
+    "deltachat-jsonrpc/Cargo.toml",
+    "deltachat-rpc-server/Cargo.toml",
+    "deltachat-repl/Cargo.toml",
+]
 
 def regex_matches(relpath, regex=rex):
     p = pathlib.Path(relpath)
@@ -56,33 +64,19 @@ def update_package_json(relpath, newversion):
         json_data = json.loads(f.read())
     json_data["version"] = newversion
     with open(p, "w") as f:
-        f.write(json.dumps(json_data, sort_keys=True, indent=2))
+        json.dump(json_data, f, sort_keys=True, indent=2)
+        f.write("\n")
 
-
-def main():
-    parser = ArgumentParser(prog="set_core_version")
-    parser.add_argument("newversion")
-
-    json_list = ["package.json", "deltachat-jsonrpc/typescript/package.json"]
-    toml_list = [
-        "Cargo.toml",
-        "deltachat-ffi/Cargo.toml",
-        "deltachat-jsonrpc/Cargo.toml",
-        "deltachat-rpc-server/Cargo.toml",
-        "deltachat-repl/Cargo.toml",
-    ]
-    try:
-        opts = parser.parse_args()
-    except SystemExit:
+def set_version(newversion):
+    if newversion is None:
         print()
         for x in toml_list:
             print(f"{x}: {read_toml_version(x)}")
         for x in json_list:
             print(f"{x}: {read_json_version(x)}")
         print()
-        raise SystemExit("need argument: new version, example: 1.25.0")
+        raise SystemExit("need argument: newversion, example: 1.25.0")
 
-    newversion = opts.newversion
     if newversion.count(".") < 2:
         raise SystemExit("need at least two dots in version")
 
@@ -90,15 +84,25 @@ def main():
     ffi_toml = read_toml_version("deltachat-ffi/Cargo.toml")
     assert core_toml == ffi_toml, (core_toml, ffi_toml)
 
+    today = datetime.date.today().isoformat()
+
     if "alpha" not in newversion:
-        for line in open("CHANGELOG.md"):
+        changelog_name = "CHANGELOG.md"
+        changelog_tmpname = changelog_name + ".tmp"
+        changelog_tmp = open(changelog_tmpname, "w")
+        found = False
+        for line in open(changelog_name):
             ## 1.25.0
-            if line.startswith("## ") and line[2:].strip().startswith(newversion):
-                break
-        else:
+            if line == f"## [{newversion}]\n":
+                line = f"## [{newversion}] - {today}\n"
+                found = True
+            changelog_tmp.write(line)
+        if not found:
             raise SystemExit(
-                f"CHANGELOG.md contains no entry for version: {newversion}"
+                f"{changelog_name} contains no entry for version: {newversion}"
             )
+        changelog_tmp.close()
+        os.rename(changelog_tmpname, changelog_name)
 
     for toml_filename in toml_list:
         replace_toml_version(toml_filename, newversion)
@@ -106,6 +110,9 @@ def main():
     for json_filename in json_list:
         update_package_json(json_filename, newversion)
 
+    with open("release-date.in", "w") as f:
+        f.write(today)
+
     print("running cargo check")
     subprocess.call(["cargo", "check"])
 
@@ -119,6 +126,17 @@ def main():
     print(f"   git push origin v{newversion}")
     print("")
 
+def main():
+    parser = ArgumentParser(prog="set_core_version")
+    parser.add_argument("newversion")
+
+    try:
+        newversion = parser.parse_args().newversion
+    except SystemExit:
+        newversion = None
+
+    set_version(newversion)
+
 
 if __name__ == "__main__":
     main()

scripts/zig-cc

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+import subprocess
+import sys
+import os
+
+
+def flag_filter(flag: str) -> bool:
+    if flag == "-lc":
+        return False
+    if flag == "-Wl,-melf_i386":
+        return False
+    if "self-contained" in flag and "crt" in flag:
+        return False
+    return True
+
+
+def main():
+    args = [flag for flag in sys.argv[1:] if flag_filter(flag)]
+    zig_target = os.environ["ZIG_TARGET"]
+    zig_cpu = os.environ.get("ZIG_CPU")
+    if zig_cpu:
+        zig_cpu_args = ["-mcpu=" + zig_cpu]
+        args = [x for x in args if not x.startswith("-march")]
+    else:
+        zig_cpu_args = []
+
+    subprocess.run(
+        ["zig", "cc", "-target", zig_target, *zig_cpu_args, *args], check=True
+    )
+
+
+main()

scripts/zig-rpc-server.sh

@@ -1,23 +1,52 @@
 #!/bin/sh
 #
-# Build statically linked deltachat-rpc-server using cargo-zigbuild.
+# Build statically linked deltachat-rpc-server using zig.
 
 set -x
 set -e
 
 unset RUSTFLAGS
 
-ZIG_VERSION=0.11.0-dev.1935+1d96a17af
+# Pin Rust version to avoid uncontrolled changes in the compiler and linker flags.
+export RUSTUP_TOOLCHAIN=1.68.1
+
+ZIG_VERSION=0.11.0-dev.2213+515e1c93e
 
 # Download Zig
-rm -fr "$ZIG_VERSION" "ZIG_VERSION.tar.xz"
+rm -fr "$ZIG_VERSION" "zig-linux-x86_64-$ZIG_VERSION.tar.xz"
 wget "https://ziglang.org/builds/zig-linux-x86_64-$ZIG_VERSION.tar.xz"
 tar xf "zig-linux-x86_64-$ZIG_VERSION.tar.xz"
 export PATH="$PWD/zig-linux-x86_64-$ZIG_VERSION:$PATH"
 
-cargo install cargo-zigbuild
+rustup target add i686-unknown-linux-musl
+CC="$PWD/scripts/zig-cc" \
+TARGET_CC="$PWD/scripts/zig-cc" \
+CARGO_TARGET_I686_UNKNOWN_LINUX_MUSL_LINKER="$PWD/scripts/zig-cc" \
+LD="$PWD/scripts/zig-cc" \
+ZIG_TARGET="x86-linux-musl" \
+cargo build --release --target i686-unknown-linux-musl -p deltachat-rpc-server --features vendored
 
-for TARGET in aarch64-unknown-linux-musl armv7-unknown-linux-musleabihf; do
-	rustup target add "$TARGET"
-	cargo zigbuild --release --target "$TARGET" -p deltachat-rpc-server --features vendored
-done
+rustup target add armv7-unknown-linux-musleabihf
+CC="$PWD/scripts/zig-cc" \
+TARGET_CC="$PWD/scripts/zig-cc" \
+CARGO_TARGET_ARMV7_UNKNOWN_LINUX_MUSLEABIHF_LINKER="$PWD/scripts/zig-cc" \
+LD="$PWD/scripts/zig-cc" \
+ZIG_TARGET="arm-linux-musleabihf" \
+ZIG_CPU="generic+v7a+vfp3-d32+thumb2-neon" \
+cargo build --release --target armv7-unknown-linux-musleabihf -p deltachat-rpc-server --features vendored
+
+rustup target add x86_64-unknown-linux-musl
+CC="$PWD/scripts/zig-cc" \
+TARGET_CC="$PWD/scripts/zig-cc" \
+CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER="$PWD/scripts/zig-cc" \
+LD="$PWD/scripts/zig-cc" \
+ZIG_TARGET="x86_64-linux-musl" \
+cargo build --release --target x86_64-unknown-linux-musl -p deltachat-rpc-server --features vendored
+
+rustup target add aarch64-unknown-linux-musl
+CC="$PWD/scripts/zig-cc" \
+TARGET_CC="$PWD/scripts/zig-cc" \
+CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER="$PWD/scripts/zig-cc" \
+LD="$PWD/scripts/zig-cc" \
+ZIG_TARGET="aarch64-linux-musl" \
+cargo build --release --target aarch64-unknown-linux-musl -p deltachat-rpc-server --features vendored

src/accounts.rs

@@ -6,6 +6,7 @@ use std::path::{Path, PathBuf};
 use anyhow::{ensure, Context as _, Result};
 use serde::{Deserialize, Serialize};
 use tokio::fs;
+use tokio::io::AsyncWriteExt;
 use uuid::Uuid;
 
 use crate::context::Context;
@@ -17,6 +18,7 @@ use crate::stock_str::StockStrings;
 pub struct Accounts {
     dir: PathBuf,
     config: Config,
+    /// Map from account ID to the account.
     accounts: BTreeMap<u32, Context>,
 
     /// Event channel to emit account manager errors.
@@ -77,12 +79,12 @@ impl Accounts {
         })
     }
 
-    /// Get an account by its `id`:
+    /// Returns an account by its `id`:
     pub fn get_account(&self, id: u32) -> Option<Context> {
         self.accounts.get(&id).cloned()
     }
 
-    /// Get the currently selected account.
+    /// Returns the currently selected account.
     pub fn get_selected_account(&self) -> Option<Context> {
         let id = self.config.get_selected_account();
         self.accounts.get(&id).cloned()
@@ -96,14 +98,14 @@ impl Accounts {
         }
     }
 
-    /// Select the given account.
+    /// Selects the given account.
     pub async fn select_account(&mut self, id: u32) -> Result<()> {
         self.config.select_account(id).await?;
 
         Ok(())
     }
 
-    /// Add a new account and opens it.
+    /// Adds a new account and opens it.
     ///
     /// Returns account ID.
     pub async fn add_account(&mut self) -> Result<u32> {
@@ -138,7 +140,7 @@ impl Accounts {
         Ok(account_config.id)
     }
 
-    /// Remove an account.
+    /// Removes an account.
     pub async fn remove_account(&mut self, id: u32) -> Result<()> {
         let ctx = self
             .accounts
@@ -159,7 +161,7 @@ impl Accounts {
         Ok(())
     }
 
-    /// Migrate an existing account into this structure.
+    /// Migrates an existing account into this structure.
     ///
     /// Returns the ID of new account.
     pub async fn migrate_account(&mut self, dbfile: PathBuf) -> Result<u32> {
@@ -262,7 +264,7 @@ impl Accounts {
     pub async fn stop_io(&self) {
         // Sending an event here wakes up event loop even
         // if there are no accounts.
-        info!(self, "Stopping IO for all accounts");
+        info!(self, "Stopping IO for all accounts.");
         for account in self.accounts.values() {
             account.stop_io().await;
         }
@@ -271,14 +273,14 @@ impl Accounts {
     /// Notifies all accounts that the network may have become available.
     pub async fn maybe_network(&self) {
         for account in self.accounts.values() {
-            account.maybe_network().await;
+            account.scheduler.maybe_network().await;
         }
     }
 
     /// Notifies all accounts that the network connection may have been lost.
     pub async fn maybe_network_lost(&self) {
         for account in self.accounts.values() {
-            account.maybe_network_lost().await;
+            account.scheduler.maybe_network_lost(account).await;
         }
     }
 
@@ -301,7 +303,7 @@ pub const DB_NAME: &str = "dc.db";
 
 /// Account manager configuration file.
 #[derive(Debug, Clone, PartialEq)]
-pub struct Config {
+struct Config {
     file: PathBuf,
     inner: InnerConfig,
 }
@@ -325,10 +327,8 @@ impl Config {
             selected_account: 0,
             next_id: 1,
         };
-        let cfg = Config {
-            file: dir.join(CONFIG_NAME),
-            inner,
-        };
+        let file = dir.join(CONFIG_NAME);
+        let mut cfg = Self { file, inner };
 
         cfg.sync().await?;
 
@@ -336,10 +336,24 @@ impl Config {
     }
 
     /// Sync the inmemory representation to disk.
-    async fn sync(&self) -> Result<()> {
-        fs::write(&self.file, toml::to_string_pretty(&self.inner)?)
+    /// Takes a mutable reference because the saved file is a part of the `Config` state. This
+    /// protects from parallel calls resulting to a wrong file contents.
+    async fn sync(&mut self) -> Result<()> {
+        let tmp_path = self.file.with_extension("toml.tmp");
+        let mut file = fs::File::create(&tmp_path)
             .await
-            .context("failed to write config")
+            .context("failed to create a tmp config")?;
+        file.write_all(toml::to_string_pretty(&self.inner)?.as_bytes())
+            .await
+            .context("failed to write a tmp config")?;
+        file.sync_data()
+            .await
+            .context("failed to sync a tmp config")?;
+        drop(file);
+        fs::rename(&tmp_path, &self.file)
+            .await
+            .context("failed to rename config")?;
+        Ok(())
     }
 
     /// Read a configuration from the given file into memory.
@@ -359,7 +373,7 @@ impl Config {
             }
         }
 
-        let config = Self { file, inner };
+        let mut config = Self { file, inner };
         if modified {
             config.sync().await?;
         }
@@ -503,17 +517,19 @@ mod tests {
         let dir = tempfile::tempdir().unwrap();
         let p: PathBuf = dir.path().join("accounts1");
 
-        let mut accounts1 = Accounts::new(p.clone()).await.unwrap();
-        accounts1.add_account().await.unwrap();
+        {
+            let mut accounts = Accounts::new(p.clone()).await.unwrap();
+            accounts.add_account().await.unwrap();
 
-        let accounts2 = Accounts::open(p).await.unwrap();
+            assert_eq!(accounts.accounts.len(), 1);
+            assert_eq!(accounts.config.get_selected_account(), 1);
+        }
+        {
+            let accounts = Accounts::open(p).await.unwrap();
 
-        assert_eq!(accounts1.accounts.len(), 1);
-        assert_eq!(accounts1.config.get_selected_account(), 1);
-
-        assert_eq!(accounts1.dir, accounts2.dir);
-        assert_eq!(accounts1.config, accounts2.config,);
-        assert_eq!(accounts1.accounts.len(), accounts2.accounts.len());
+            assert_eq!(accounts.accounts.len(), 1);
+            assert_eq!(accounts.config.get_selected_account(), 1);
+        }
     }
 
     #[tokio::test(flavor = "multi_thread", worker_threads = 2)]

src/authres.rs

@@ -308,7 +308,7 @@ async fn dkim_works_timestamp(context: &Context, from_domain: &str) -> Result<i6
         .sql
         .query_get_value(
             "SELECT dkim_works FROM sending_domains WHERE domain=?",
-            paramsv![from_domain],
+            (from_domain,),
         )
         .await?
         .unwrap_or(0);
@@ -325,7 +325,7 @@ async fn set_dkim_works_timestamp(
         .execute(
             "INSERT INTO sending_domains (domain, dkim_works) VALUES (?,?)
                 ON CONFLICT(domain) DO UPDATE SET dkim_works=excluded.dkim_works",
-            paramsv![from_domain, timestamp],
+            (from_domain, timestamp),
         )
         .await?;
     Ok(())

src/blob.rs

@@ -4,23 +4,22 @@ use core::cmp::max;
 use std::ffi::OsStr;
 use std::fmt;
 use std::io::Cursor;
+use std::iter::FusedIterator;
 use std::path::{Path, PathBuf};
 
 use anyhow::{format_err, Context as _, Result};
-use image::{DynamicImage, ImageFormat};
+use futures::StreamExt;
+use image::{DynamicImage, ImageFormat, ImageOutputFormat};
 use num_traits::FromPrimitive;
 use tokio::io::AsyncWriteExt;
 use tokio::{fs, io};
+use tokio_stream::wrappers::ReadDirStream;
 
 use crate::config::Config;
-use crate::constants::{
-    MediaQuality, BALANCED_AVATAR_SIZE, BALANCED_IMAGE_SIZE, WORSE_AVATAR_SIZE, WORSE_IMAGE_SIZE,
-};
+use crate::constants::{self, MediaQuality};
 use crate::context::Context;
 use crate::events::EventType;
 use crate::log::LogExt;
-use crate::message;
-use crate::message::Viewtype;
 
 /// Represents a file in the blob directory.
 ///
@@ -89,7 +88,7 @@ impl<'a> BlobObject<'a> {
                     if attempt >= MAX_ATTEMPT {
                         return Err(err).context("failed to create file");
                     } else if attempt == 1 && !dir.exists() {
-                        fs::create_dir_all(dir).await.ok_or_log(context);
+                        fs::create_dir_all(dir).await.log_err(context).ok();
                     } else {
                         name = format!("{}-{}{}", stem, rand::random::<u32>(), ext);
                     }
@@ -160,9 +159,9 @@ impl<'a> BlobObject<'a> {
     pub fn from_path(context: &'a Context, path: &Path) -> Result<BlobObject<'a>> {
         let rel_path = path
             .strip_prefix(context.get_blobdir())
-            .context("wrong blobdir")?;
+            .with_context(|| format!("wrong blobdir: {}", path.display()))?;
         if !BlobObject::is_acceptible_blob_name(rel_path) {
-            return Err(format_err!("wrong name"));
+            return Err(format_err!("bad blob name: {}", rel_path.display()));
         }
         let name = rel_path.to_str().context("wrong name")?;
         BlobObject::from_name(context, name.to_string())
@@ -320,119 +319,149 @@ impl<'a> BlobObject<'a> {
             match MediaQuality::from_i32(context.get_config_int(Config::MediaQuality).await?)
                 .unwrap_or_default()
             {
-                MediaQuality::Balanced => BALANCED_AVATAR_SIZE,
-                MediaQuality::Worse => WORSE_AVATAR_SIZE,
+                MediaQuality::Balanced => constants::BALANCED_AVATAR_SIZE,
+                MediaQuality::Worse => constants::WORSE_AVATAR_SIZE,
             };
 
+        let strict_limits = true;
         // max_bytes is 20_000 bytes: Outlook servers don't allow headers larger than 32k.
         // 32 / 4 * 3 = 24k if you account for base64 encoding. To be safe, we reduced this to 20k.
-        if let Some(new_name) = self.recode_to_size(context, blob_abs, img_wh, Some(20_000))? {
+        if let Some(new_name) =
+            self.recode_to_size(context, blob_abs, img_wh, 20_000, strict_limits)?
+        {
             self.name = new_name;
         }
         Ok(())
     }
 
-    pub async fn recode_to_image_size(&self, context: &Context) -> Result<()> {
+    pub async fn recode_to_image_size(&mut self, context: &Context) -> Result<()> {
         let blob_abs = self.to_abs_path();
-        if message::guess_msgtype_from_suffix(Path::new(&blob_abs))
-            != Some((Viewtype::Image, "image/jpeg"))
-        {
-            return Ok(());
-        }
-
-        let img_wh =
+        let (img_wh, max_bytes) =
             match MediaQuality::from_i32(context.get_config_int(Config::MediaQuality).await?)
                 .unwrap_or_default()
             {
-                MediaQuality::Balanced => BALANCED_IMAGE_SIZE,
-                MediaQuality::Worse => WORSE_IMAGE_SIZE,
+                MediaQuality::Balanced => (
+                    constants::BALANCED_IMAGE_SIZE,
+                    constants::BALANCED_IMAGE_BYTES,
+                ),
+                MediaQuality::Worse => (constants::WORSE_IMAGE_SIZE, constants::WORSE_IMAGE_BYTES),
             };
-
-        if self
-            .recode_to_size(context, blob_abs, img_wh, None)?
-            .is_some()
+        let strict_limits = false;
+        if let Some(new_name) =
+            self.recode_to_size(context, blob_abs, img_wh, max_bytes, strict_limits)?
         {
-            return Err(format_err!(
-                "Internal error: recode_to_size(..., None) shouldn't change the name of the image"
-            ));
+            self.name = new_name;
         }
         Ok(())
     }
 
+    /// If `!strict_limits`, then if `max_bytes` is exceeded, reduce the image to `img_wh` and just
+    /// proceed with the result.
     fn recode_to_size(
         &self,
         context: &Context,
         mut blob_abs: PathBuf,
         mut img_wh: u32,
-        max_bytes: Option<usize>,
+        max_bytes: usize,
+        strict_limits: bool,
     ) -> Result<Option<String>> {
         tokio::task::block_in_place(move || {
-            let mut img = image::open(&blob_abs).context("image recode failure")?;
-            let orientation = self.get_exif_orientation(context);
+            let mut img = image::open(&blob_abs).context("image decode failure")?;
+            let (nr_bytes, exif) = self.metadata()?;
+            let orientation = exif.as_ref().map(|exif| exif_orientation(exif, context));
             let mut encoded = Vec::new();
             let mut changed_name = None;
 
-            let exceeds_width = img.width() > img_wh || img.height() > img_wh;
+            img = match orientation {
+                Some(90) => img.rotate90(),
+                Some(180) => img.rotate180(),
+                Some(270) => img.rotate270(),
+                _ => img,
+            };
 
-            let do_scale =
-                exceeds_width || encoded_img_exceeds_bytes(context, &img, max_bytes, &mut encoded)?;
-            let do_rotate = matches!(orientation, Ok(90) | Ok(180) | Ok(270));
+            let exceeds_wh = img.width() > img_wh || img.height() > img_wh;
+            let exceeds_max_bytes = nr_bytes > max_bytes as u64;
 
-            if do_scale || do_rotate {
-                if do_rotate {
-                    img = match orientation {
-                        Ok(90) => img.rotate90(),
-                        Ok(180) => img.rotate180(),
-                        Ok(270) => img.rotate270(),
-                        _ => img,
-                    }
+            let fmt = ImageFormat::from_path(&blob_abs);
+            let ofmt = match fmt {
+                Ok(ImageFormat::Png) if !exceeds_max_bytes => ImageOutputFormat::Png,
+                _ => {
+                    let jpeg_quality = 75;
+                    ImageOutputFormat::Jpeg(jpeg_quality)
                 }
-
-                if do_scale {
-                    if !exceeds_width {
-                        // The image is already smaller than img_wh, but exceeds max_bytes
-                        // We can directly start with trying to scale down to 2/3 of its current width
-                        img_wh = max(img.width(), img.height()) * 2 / 3
-                    }
-
-                    loop {
-                        let new_img = img.thumbnail(img_wh, img_wh);
-
-                        if encoded_img_exceeds_bytes(context, &new_img, max_bytes, &mut encoded)? {
-                            if img_wh < 20 {
-                                return Err(format_err!(
-                                    "Failed to scale image to below {}B",
-                                    max_bytes.unwrap_or_default()
-                                ));
-                            }
-
-                            img_wh = img_wh * 2 / 3;
-                        } else {
-                            if encoded.is_empty() {
-                                encode_img(&new_img, &mut encoded)?;
-                            }
-
-                            info!(
+            };
+            // We need to rewrite images with Exif to remove metadata such as location,
+            // camera model, etc.
+            //
+            // TODO: Fix lost animation and transparency when recoding using the `image` crate. And
+            // also `Viewtype::Gif` (maybe renamed to `Animation`) should be used for animated
+            // images.
+            let do_scale = exceeds_max_bytes
+                || strict_limits
+                    && (exceeds_wh
+                        || exif.is_some()
+                            && encoded_img_exceeds_bytes(
                                 context,
-                                "Final scaled-down image size: {}B ({}px)",
-                                encoded.len(),
-                                img_wh
-                            );
-                            break;
-                        }
+                                &img,
+                                ofmt.clone(),
+                                max_bytes,
+                                &mut encoded,
+                            )?);
+
+            if do_scale {
+                if !exceeds_wh {
+                    img_wh = max(img.width(), img.height());
+                    // PNGs and WebPs may be huge because of animation, which is lost by the `image`
+                    // crate when recoding, so don't scale them down.
+                    if matches!(fmt, Ok(ImageFormat::Jpeg)) || !encoded.is_empty() {
+                        img_wh = img_wh * 2 / 3;
                     }
                 }
 
-                // The file format is JPEG now, we may have to change the file extension
-                if !matches!(ImageFormat::from_path(&blob_abs), Ok(ImageFormat::Jpeg)) {
+                loop {
+                    let new_img = img.thumbnail(img_wh, img_wh);
+
+                    if encoded_img_exceeds_bytes(
+                        context,
+                        &new_img,
+                        ofmt.clone(),
+                        max_bytes,
+                        &mut encoded,
+                    )? && strict_limits
+                    {
+                        if img_wh < 20 {
+                            return Err(format_err!(
+                                "Failed to scale image to below {}B.",
+                                max_bytes,
+                            ));
+                        }
+
+                        img_wh = img_wh * 2 / 3;
+                    } else {
+                        info!(
+                            context,
+                            "Final scaled-down image size: {}B ({}px).",
+                            encoded.len(),
+                            img_wh
+                        );
+                        break;
+                    }
+                }
+            }
+
+            if do_scale || exif.is_some() {
+                // The file format is JPEG/PNG now, we may have to change the file extension
+                if !matches!(fmt, Ok(ImageFormat::Jpeg))
+                    && matches!(ofmt, ImageOutputFormat::Jpeg(_))
+                {
                     blob_abs = blob_abs.with_extension("jpg");
-                    let file_name = blob_abs.file_name().context("No avatar file name (???)")?;
+                    let file_name = blob_abs.file_name().context("No image file name (???)")?;
                     let file_name = file_name.to_str().context("Filename is no UTF-8 (???)")?;
                     changed_name = Some(format!("$BLOBDIR/{file_name}"));
                 }
 
                 if encoded.is_empty() {
-                    encode_img(&img, &mut encoded)?;
+                    encode_img(&img, ofmt, &mut encoded)?;
                 }
 
                 std::fs::write(&blob_abs, &encoded)
@@ -443,56 +472,146 @@ impl<'a> BlobObject<'a> {
         })
     }
 
-    pub fn get_exif_orientation(&self, context: &Context) -> Result<i32> {
+    /// Returns image file size and Exif.
+    pub fn metadata(&self) -> Result<(u64, Option<exif::Exif>)> {
         let file = std::fs::File::open(self.to_abs_path())?;
+        let len = file.metadata()?.len();
         let mut bufreader = std::io::BufReader::new(&file);
-        let exifreader = exif::Reader::new();
-        let exif = exifreader.read_from_container(&mut bufreader)?;
-        if let Some(orientation) = exif.get_field(exif::Tag::Orientation, exif::In::PRIMARY) {
-            // possible orientation values are described at http://sylvana.net/jpegcrop/exif_orientation.html
-            // we only use rotation, in practise, flipping is not used.
-            match orientation.value.get_uint(0) {
-                Some(3) => return Ok(180),
-                Some(6) => return Ok(90),
-                Some(8) => return Ok(270),
-                other => warn!(context, "exif orientation value ignored: {:?}", other),
-            }
-        }
-        Ok(0)
+        let exif = exif::Reader::new().read_from_container(&mut bufreader).ok();
+        Ok((len, exif))
     }
 }
 
+fn exif_orientation(exif: &exif::Exif, context: &Context) -> i32 {
+    if let Some(orientation) = exif.get_field(exif::Tag::Orientation, exif::In::PRIMARY) {
+        // possible orientation values are described at http://sylvana.net/jpegcrop/exif_orientation.html
+        // we only use rotation, in practise, flipping is not used.
+        match orientation.value.get_uint(0) {
+            Some(3) => return 180,
+            Some(6) => return 90,
+            Some(8) => return 270,
+            other => warn!(context, "Exif orientation value ignored: {other:?}."),
+        }
+    }
+    0
+}
+
 impl<'a> fmt::Display for BlobObject<'a> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "$BLOBDIR/{}", self.name)
     }
 }
 
-fn encode_img(img: &DynamicImage, encoded: &mut Vec<u8>) -> anyhow::Result<()> {
+/// All files in the blobdir.
+///
+/// This exists so we can have a [`BlobDirIter`] which needs something to own the data of
+/// it's `&Path`.  Use [`BlobDirContents::iter`] to create the iterator.
+///
+/// Additionally pre-allocating this means we get a length for progress report.
+pub(crate) struct BlobDirContents<'a> {
+    inner: Vec<PathBuf>,
+    context: &'a Context,
+}
+
+impl<'a> BlobDirContents<'a> {
+    pub(crate) async fn new(context: &'a Context) -> Result<BlobDirContents<'a>> {
+        let readdir = fs::read_dir(context.get_blobdir()).await?;
+        let inner = ReadDirStream::new(readdir)
+            .filter_map(|entry| async move {
+                match entry {
+                    Ok(entry) => Some(entry),
+                    Err(err) => {
+                        error!(context, "Failed to read blob file: {err}.");
+                        None
+                    }
+                }
+            })
+            .filter_map(|entry| async move {
+                match entry.file_type().await.ok()?.is_file() {
+                    true => Some(entry.path()),
+                    false => {
+                        warn!(
+                            context,
+                            "Export: Found blob dir entry {} that is not a file, ignoring.",
+                            entry.path().display()
+                        );
+                        None
+                    }
+                }
+            })
+            .collect()
+            .await;
+        Ok(Self { inner, context })
+    }
+
+    pub(crate) fn iter(&self) -> BlobDirIter<'_> {
+        BlobDirIter::new(self.context, self.inner.iter())
+    }
+
+    pub(crate) fn len(&self) -> usize {
+        self.inner.len()
+    }
+}
+
+/// A iterator over all the [`BlobObject`]s in the blobdir.
+pub(crate) struct BlobDirIter<'a> {
+    iter: std::slice::Iter<'a, PathBuf>,
+    context: &'a Context,
+}
+
+impl<'a> BlobDirIter<'a> {
+    fn new(context: &'a Context, iter: std::slice::Iter<'a, PathBuf>) -> BlobDirIter<'a> {
+        Self { iter, context }
+    }
+}
+
+impl<'a> Iterator for BlobDirIter<'a> {
+    type Item = BlobObject<'a>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        for path in self.iter.by_ref() {
+            // In theory this can error but we'd have corrupted filenames in the blobdir, so
+            // silently skipping them is fine.
+            match BlobObject::from_path(self.context, path) {
+                Ok(blob) => return Some(blob),
+                Err(err) => warn!(self.context, "{err}"),
+            }
+        }
+        None
+    }
+}
+
+impl FusedIterator for BlobDirIter<'_> {}
+
+fn encode_img(
+    img: &DynamicImage,
+    fmt: ImageOutputFormat,
+    encoded: &mut Vec<u8>,
+) -> anyhow::Result<()> {
     encoded.clear();
     let mut buf = Cursor::new(encoded);
-    img.write_to(&mut buf, image::ImageFormat::Jpeg)?;
+    img.write_to(&mut buf, fmt)?;
     Ok(())
 }
+
 fn encoded_img_exceeds_bytes(
     context: &Context,
     img: &DynamicImage,
-    max_bytes: Option<usize>,
+    fmt: ImageOutputFormat,
+    max_bytes: usize,
     encoded: &mut Vec<u8>,
 ) -> anyhow::Result<bool> {
-    if let Some(max_bytes) = max_bytes {
-        encode_img(img, encoded)?;
-        if encoded.len() > max_bytes {
-            info!(
-                context,
-                "image size {}B ({}x{}px) exceeds {}B, need to scale down",
-                encoded.len(),
-                img.width(),
-                img.height(),
-                max_bytes,
-            );
-            return Ok(true);
-        }
+    encode_img(img, fmt, encoded)?;
+    if encoded.len() > max_bytes {
+        info!(
+            context,
+            "Image size {}B ({}x{}px) exceeds {}B, need to scale down.",
+            encoded.len(),
+            img.width(),
+            img.height(),
+            max_bytes,
+        );
+        return Ok(true);
     }
     Ok(false)
 }
@@ -505,7 +624,7 @@ mod tests {
 
     use super::*;
     use crate::chat::{self, create_group_chat, ProtectionStatus};
-    use crate::message::Message;
+    use crate::message::{Message, Viewtype};
     use crate::test_utils::{self, TestContext};
 
     fn check_image_size(path: impl AsRef<Path>, width: u32, height: u32) -> image::DynamicImage {
@@ -730,7 +849,11 @@ mod tests {
         assert_eq!(avatar_cfg, avatar_blob.to_str().map(|s| s.to_string()));
 
         check_image_size(avatar_src, 1000, 1000);
-        check_image_size(&avatar_blob, BALANCED_AVATAR_SIZE, BALANCED_AVATAR_SIZE);
+        check_image_size(
+            &avatar_blob,
+            constants::BALANCED_AVATAR_SIZE,
+            constants::BALANCED_AVATAR_SIZE,
+        );
 
         async fn file_size(path_buf: &Path) -> u64 {
             let file = File::open(path_buf).await.unwrap();
@@ -738,8 +861,8 @@ mod tests {
         }
 
         let blob = BlobObject::new_from_path(&t, &avatar_blob).await.unwrap();
-
-        blob.recode_to_size(&t, blob.to_abs_path(), 1000, Some(3000))
+        let strict_limits = true;
+        blob.recode_to_size(&t, blob.to_abs_path(), 1000, 3000, strict_limits)
             .unwrap();
         assert!(file_size(&avatar_blob).await <= 3000);
         assert!(file_size(&avatar_blob).await > 2000);
@@ -766,10 +889,14 @@ mod tests {
         let avatar_cfg = t.get_config(Config::Selfavatar).await.unwrap().unwrap();
         assert_eq!(
             avatar_cfg,
-            avatar_src.with_extension("jpg").to_str().unwrap()
+            avatar_src.with_extension("png").to_str().unwrap()
         );
 
-        check_image_size(avatar_cfg, BALANCED_AVATAR_SIZE, BALANCED_AVATAR_SIZE);
+        check_image_size(
+            avatar_cfg,
+            constants::BALANCED_AVATAR_SIZE,
+            constants::BALANCED_AVATAR_SIZE,
+        );
     }
 
     #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
@@ -795,18 +922,29 @@ mod tests {
     #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
     async fn test_recode_image_1() {
         let bytes = include_bytes!("../test-data/image/avatar1000x1000.jpg");
-        // BALANCED_IMAGE_SIZE > 1000, the original image size, so the image is not scaled down:
-        send_image_check_mediaquality(Some("0"), bytes, 1000, 1000, 0, 1000, 1000)
-            .await
-            .unwrap();
         send_image_check_mediaquality(
-            Some("1"),
+            Some("0"),
             bytes,
+            "jpg",
+            true, // has Exif
             1000,
             1000,
             0,
-            WORSE_IMAGE_SIZE,
-            WORSE_IMAGE_SIZE,
+            1000,
+            1000,
+        )
+        .await
+        .unwrap();
+        send_image_check_mediaquality(
+            Some("1"),
+            bytes,
+            "jpg",
+            true, // has Exif
+            1000,
+            1000,
+            0,
+            1000,
+            1000,
         )
         .await
         .unwrap();
@@ -819,69 +957,87 @@ mod tests {
         let img_rotated = send_image_check_mediaquality(
             Some("0"),
             bytes,
+            "jpg",
+            true, // has Exif
             2000,
             1800,
             270,
-            BALANCED_IMAGE_SIZE * 1800 / 2000,
-            BALANCED_IMAGE_SIZE,
+            1800,
+            2000,
         )
         .await
         .unwrap();
         assert_correct_rotation(&img_rotated);
 
         let mut buf = Cursor::new(vec![]);
-        img_rotated
-            .write_to(&mut buf, image::ImageFormat::Jpeg)
-            .unwrap();
+        img_rotated.write_to(&mut buf, ImageFormat::Jpeg).unwrap();
         let bytes = buf.into_inner();
 
-        // Do this in parallel to speed up the test a bit
-        // (it still takes very long though)
-        let bytes2 = bytes.clone();
-        let join_handle = tokio::task::spawn(async move {
-            let img_rotated = send_image_check_mediaquality(
-                Some("0"),
-                &bytes2,
-                BALANCED_IMAGE_SIZE * 1800 / 2000,
-                BALANCED_IMAGE_SIZE,
-                0,
-                BALANCED_IMAGE_SIZE * 1800 / 2000,
-                BALANCED_IMAGE_SIZE,
-            )
-            .await
-            .unwrap();
-            assert_correct_rotation(&img_rotated);
-        });
-
         let img_rotated = send_image_check_mediaquality(
             Some("1"),
             &bytes,
-            BALANCED_IMAGE_SIZE * 1800 / 2000,
-            BALANCED_IMAGE_SIZE,
+            "jpg",
+            false, // no Exif
+            1800,
+            2000,
             0,
-            WORSE_IMAGE_SIZE * 1800 / 2000,
-            WORSE_IMAGE_SIZE,
+            1800,
+            2000,
         )
         .await
         .unwrap();
         assert_correct_rotation(&img_rotated);
-
-        join_handle.await.unwrap();
     }
 
     #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
-    async fn test_recode_image_3() {
-        let bytes = include_bytes!("../test-data/image/rectangle200x180-rotated.jpg");
-        let img_rotated = send_image_check_mediaquality(Some("0"), bytes, 200, 180, 270, 180, 200)
-            .await
-            .unwrap();
-        assert_correct_rotation(&img_rotated);
+    async fn test_recode_image_balanced_png() {
+        let bytes = include_bytes!("../test-data/image/screenshot.png");
 
-        let bytes = include_bytes!("../test-data/image/rectangle200x180-rotated.jpg");
-        let img_rotated = send_image_check_mediaquality(Some("1"), bytes, 200, 180, 270, 180, 200)
-            .await
-            .unwrap();
-        assert_correct_rotation(&img_rotated);
+        send_image_check_mediaquality(
+            Some("0"),
+            bytes,
+            "png",
+            false, // no Exif
+            1920,
+            1080,
+            0,
+            1920,
+            1080,
+        )
+        .await
+        .unwrap();
+
+        send_image_check_mediaquality(
+            Some("1"),
+            bytes,
+            "png",
+            false, // no Exif
+            1920,
+            1080,
+            0,
+            constants::WORSE_IMAGE_SIZE,
+            constants::WORSE_IMAGE_SIZE * 1080 / 1920,
+        )
+        .await
+        .unwrap();
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn test_recode_image_huge_jpg() {
+        let bytes = include_bytes!("../test-data/image/screenshot.jpg");
+        send_image_check_mediaquality(
+            Some("0"),
+            bytes,
+            "jpg",
+            true, // has Exif
+            1920,
+            1080,
+            0,
+            constants::BALANCED_IMAGE_SIZE,
+            constants::BALANCED_IMAGE_SIZE * 1080 / 1920,
+        )
+        .await
+        .unwrap();
     }
 
     fn assert_correct_rotation(img: &DynamicImage) {
@@ -901,9 +1057,12 @@ mod tests {
         assert_eq!(luma, 0);
     }
 
+    #[allow(clippy::too_many_arguments)]
     async fn send_image_check_mediaquality(
         media_quality_config: Option<&str>,
         bytes: &[u8],
+        extension: &str,
+        has_exif: bool,
         original_width: u32,
         original_height: u32,
         orientation: i32,
@@ -915,7 +1074,7 @@ mod tests {
         alice
             .set_config(Config::MediaQuality, media_quality_config)
             .await?;
-        let file = alice.get_blobdir().join("file.jpg");
+        let file = alice.get_blobdir().join("file").with_extension(extension);
 
         fs::write(&file, &bytes)
             .await
@@ -923,7 +1082,13 @@ mod tests {
         check_image_size(&file, original_width, original_height);
 
         let blob = BlobObject::new_from_path(&alice, &file).await?;
-        assert_eq!(blob.get_exif_orientation(&alice).unwrap_or(0), orientation);
+        let (_, exif) = blob.metadata()?;
+        if has_exif {
+            let exif = exif.unwrap();
+            assert_eq!(exif_orientation(&exif, &alice), orientation);
+        } else {
+            assert!(exif.is_none());
+        }
 
         let mut msg = Message::new(Viewtype::Image);
         msg.set_file(file.to_str().unwrap(), None);
@@ -944,7 +1109,8 @@ mod tests {
         let file = bob_msg.get_file(&bob).unwrap();
 
         let blob = BlobObject::new_from_path(&bob, &file).await?;
-        assert_eq!(blob.get_exif_orientation(&bob).unwrap_or(0), 0);
+        let (_, exif) = blob.metadata()?;
+        assert!(exif.is_none());
 
         let img = check_image_size(file, compressed_width, compressed_height);
         Ok(img)

src/chat.rs

@@ -35,8 +35,9 @@ use crate::scheduler::InterruptInfo;
 use crate::smtp::send_msg_to_smtp;
 use crate::stock_str;
 use crate::tools::{
-    create_id, create_outgoing_rfc724_mid, create_smeared_timestamp, create_smeared_timestamps,
-    get_abs_path, gm2local_offset, improve_single_line_input, time, IsNoneOrEmpty,
+    buf_compress, create_id, create_outgoing_rfc724_mid, create_smeared_timestamp,
+    create_smeared_timestamps, get_abs_path, gm2local_offset, improve_single_line_input,
+    strip_rtlo_characters, time, IsNoneOrEmpty,
 };
 use crate::webxdc::WEBXDC_SUFFIX;
 use crate::{location, sql};
@@ -247,7 +248,7 @@ impl ChatId {
                 } else {
                     warn!(
                         context,
-                        "Cannot create chat, contact {} does not exist.", contact_id,
+                        "Cannot create chat, contact {contact_id} does not exist."
                     );
                     bail!("Can not create chat for non-existing contact");
                 }
@@ -268,25 +269,26 @@ impl ChatId {
         create_protected: ProtectionStatus,
         param: Option<String>,
     ) -> Result<Self> {
+        let grpname = strip_rtlo_characters(grpname);
         let row_id =
             context.sql.insert(
                 "INSERT INTO chats (type, name, grpid, blocked, created_timestamp, protected, param) VALUES(?, ?, ?, ?, ?, ?, ?);",
-                paramsv![
+                (
                     chattype,
-                    grpname,
+                    &grpname,
                     grpid,
                     create_blocked,
                     create_smeared_timestamp(context),
                     create_protected,
                     param.unwrap_or_default(),
-                ],
+                ),
             ).await?;
 
         let chat_id = ChatId::new(u32::try_from(row_id)?);
         info!(
             context,
-            "Created group/mailinglist '{}' grpid={} as {}, blocked={}",
-            grpname,
+            "Created group/mailinglist '{}' grpid={} as {}, blocked={}.",
+            &grpname,
             grpid,
             chat_id,
             create_blocked,
@@ -302,7 +304,7 @@ impl ChatId {
                 "UPDATE contacts
                 SET selfavatar_sent=?
               WHERE id IN(SELECT contact_id FROM chats_contacts WHERE chat_id=?);",
-                paramsv![timestamp, self],
+                (timestamp, self),
             )
             .await?;
         Ok(())
@@ -319,7 +321,7 @@ impl ChatId {
             .sql
             .execute(
                 "UPDATE chats SET blocked=?1 WHERE id=?2 AND blocked != ?1",
-                paramsv![new_blocked, self],
+                (new_blocked, self),
             )
             .await?;
         Ok(count > 0)
@@ -338,14 +340,14 @@ impl ChatId {
                     if contact_id != ContactId::SELF {
                         info!(
                             context,
-                            "Blocking the contact {} to block 1:1 chat", contact_id
+                            "Blocking the contact {contact_id} to block 1:1 chat."
                         );
                         Contact::block(context, contact_id).await?;
                     }
                 }
             }
             Chattype::Group => {
-                info!(context, "Can't block groups yet, deleting the chat");
+                info!(context, "Can't block groups yet, deleting the chat.");
                 self.delete(context).await?;
             }
             Chattype::Mailinglist => {
@@ -433,10 +435,7 @@ impl ChatId {
 
         context
             .sql
-            .execute(
-                "UPDATE chats SET protected=? WHERE id=?;",
-                paramsv![protect, self],
-            )
+            .execute("UPDATE chats SET protected=? WHERE id=?;", (protect, self))
             .await?;
 
         context.emit_event(EventType::ChatModified(self));
@@ -500,7 +499,7 @@ impl ChatId {
         let chat = Chat::load_from_db(context, self).await?;
 
         if let Err(e) = self.inner_set_protection(context, protect).await {
-            error!(context, "Cannot set protection: {}", e); // make error user-visible
+            error!(context, "Cannot set protection: {e:#}."); // make error user-visible
             return Err(e);
         }
 
@@ -522,12 +521,12 @@ impl ChatId {
                 if visibility == ChatVisibility::Archived {
                     transaction.execute(
                         "UPDATE msgs SET state=? WHERE chat_id=? AND state=?;",
-                        paramsv![MessageState::InNoticed, self, MessageState::InFresh],
+                        (MessageState::InNoticed, self, MessageState::InFresh),
                     )?;
                 }
                 transaction.execute(
                     "UPDATE chats SET archived=? WHERE id=?;",
-                    paramsv![visibility, self],
+                    (visibility, self),
                 )?;
                 Ok(())
             })
@@ -556,7 +555,7 @@ impl ChatId {
                 .execute(
                     "UPDATE chats SET archived=0 WHERE id=? AND archived=1 \
                 AND NOT(muted_until=-1 OR muted_until>?)",
-                    paramsv![self, time()],
+                    (self, time()),
                 )
                 .await?;
             return Ok(());
@@ -574,7 +573,7 @@ impl ChatId {
                 WHERE state=?
                 AND hidden=0
                 AND chat_id=?",
-                    paramsv![MessageState::InFresh, self],
+                    (MessageState::InFresh, self),
                 )
                 .await?;
             if unread_cnt == 1 {
@@ -585,7 +584,7 @@ impl ChatId {
         }
         context
             .sql
-            .execute("UPDATE chats SET archived=0 WHERE id=?", paramsv![self])
+            .execute("UPDATE chats SET archived=0 WHERE id=?", (self,))
             .await?;
         Ok(())
     }
@@ -614,32 +613,32 @@ impl ChatId {
             .sql
             .execute(
                 "DELETE FROM msgs_mdns WHERE msg_id IN (SELECT id FROM msgs WHERE chat_id=?);",
-                paramsv![self],
+                (self,),
             )
             .await?;
 
         context
             .sql
-            .execute("DELETE FROM msgs WHERE chat_id=?;", paramsv![self])
+            .execute("DELETE FROM msgs WHERE chat_id=?;", (self,))
             .await?;
 
         context
             .sql
-            .execute(
-                "DELETE FROM chats_contacts WHERE chat_id=?;",
-                paramsv![self],
-            )
+            .execute("DELETE FROM chats_contacts WHERE chat_id=?;", (self,))
             .await?;
 
         context
             .sql
-            .execute("DELETE FROM chats WHERE id=?;", paramsv![self])
+            .execute("DELETE FROM chats WHERE id=?;", (self,))
             .await?;
 
         context.emit_msgs_changed_without_ids();
 
         context.set_config(Config::LastHousekeeping, None).await?;
-        context.interrupt_inbox(InterruptInfo::new(false)).await;
+        context
+            .scheduler
+            .interrupt_inbox(InterruptInfo::new(false))
+            .await;
 
         if chat.is_self_talk() {
             let mut msg = Message::new(Viewtype::Text);
@@ -686,7 +685,7 @@ impl ChatId {
             .sql
             .query_get_value(
                 "SELECT id FROM msgs WHERE chat_id=? AND state=?;",
-                paramsv![self, MessageState::OutDraft],
+                (self, MessageState::OutDraft),
             )
             .await?;
         Ok(msg_id)
@@ -768,14 +767,14 @@ impl ChatId {
                             "UPDATE msgs
                             SET timestamp=?,type=?,txt=?, param=?,mime_in_reply_to=?
                             WHERE id=?;",
-                            paramsv![
+                            (
                                 time(),
                                 msg.viewtype,
                                 msg.text.as_deref().unwrap_or(""),
                                 msg.param.to_string(),
                                 msg.in_reply_to.as_deref().unwrap_or_default(),
-                                msg.id
-                            ],
+                                msg.id,
+                            ),
                         )
                         .await?;
                     return Ok(true);
@@ -799,7 +798,7 @@ impl ChatId {
                  hidden,
                  mime_in_reply_to)
          VALUES (?,?,?, ?,?,?,?,?,?);",
-                paramsv![
+                (
                     self,
                     ContactId::SELF,
                     time(),
@@ -809,7 +808,7 @@ impl ChatId {
                     msg.param.to_string(),
                     1,
                     msg.in_reply_to.as_deref().unwrap_or_default(),
-                ],
+                ),
             )
             .await?;
         msg.id = MsgId::new(row_id.try_into()?);
@@ -822,7 +821,7 @@ impl ChatId {
             .sql
             .count(
                 "SELECT COUNT(*) FROM msgs WHERE hidden=0 AND chat_id=?",
-                paramsv![self],
+                (self,),
             )
             .await?;
         Ok(count)
@@ -865,7 +864,7 @@ impl ChatId {
                 WHERE state=?
                 AND hidden=0
                 AND chat_id=?;",
-                    paramsv![MessageState::InFresh, self],
+                    (MessageState::InFresh, self),
                 )
                 .await?
         };
@@ -875,7 +874,7 @@ impl ChatId {
     pub(crate) async fn get_param(self, context: &Context) -> Result<Params> {
         let res: Option<String> = context
             .sql
-            .query_get_value("SELECT param FROM chats WHERE id=?", paramsv![self])
+            .query_get_value("SELECT param FROM chats WHERE id=?", (self,))
             .await?;
         Ok(res
             .map(|s| s.parse().unwrap_or_default())
@@ -920,13 +919,13 @@ impl ChatId {
         let row = sql
             .query_row_optional(
                 &query,
-                paramsv![
+                (
                     self,
                     MessageState::OutPreparing,
                     MessageState::OutDraft,
                     MessageState::OutPending,
-                    MessageState::OutFailed
-                ],
+                    MessageState::OutFailed,
+                ),
                 f,
             )
             .await?;
@@ -1048,10 +1047,7 @@ impl ChatId {
     pub async fn get_gossiped_timestamp(self, context: &Context) -> Result<i64> {
         let timestamp: Option<i64> = context
             .sql
-            .query_get_value(
-                "SELECT gossiped_timestamp FROM chats WHERE id=?;",
-                paramsv![self],
-            )
+            .query_get_value("SELECT gossiped_timestamp FROM chats WHERE id=?;", (self,))
             .await?;
         Ok(timestamp.unwrap_or_default())
     }
@@ -1067,14 +1063,14 @@ impl ChatId {
         );
         info!(
             context,
-            "set gossiped_timestamp for chat {} to {}.", self, timestamp,
+            "Set gossiped_timestamp for chat {} to {}.", self, timestamp,
         );
 
         context
             .sql
             .execute(
                 "UPDATE chats SET gossiped_timestamp=? WHERE id=?;",
-                paramsv![timestamp, self],
+                (timestamp, self),
             )
             .await?;
 
@@ -1170,7 +1166,7 @@ impl Chat {
                     c.blocked, c.locations_send_until, c.muted_until, c.protected
              FROM chats c
              WHERE c.id=?;",
-                paramsv![chat_id],
+                (chat_id,),
                 |row| {
                     let c = Chat {
                         id: chat_id,
@@ -1208,7 +1204,7 @@ impl Chat {
                     Err(err) => {
                         error!(
                             context,
-                            "failed to load contacts for {}: {:#}", chat.id, err
+                            "Failed to load contacts for {}: {:#}.", chat.id, err
                         );
                     }
                 }
@@ -1284,7 +1280,7 @@ impl Chat {
             .sql
             .execute(
                 "UPDATE chats SET param=? WHERE id=?",
-                paramsv![self.param.to_string(), self.id],
+                (self.param.to_string(), self.id),
             )
             .await?;
         Ok(())
@@ -1466,7 +1462,7 @@ impl Chat {
                 .sql
                 .query_get_value(
                     "SELECT contact_id FROM chats_contacts WHERE chat_id=?;",
-                    paramsv![self.id],
+                    (self.id,),
                 )
                 .await?
             {
@@ -1547,13 +1543,13 @@ impl Chat {
                     "INSERT INTO locations \
                      (timestamp,from_id,chat_id, latitude,longitude,independent)\
                      VALUES (?,?,?, ?,?,1);",
-                    paramsv![
+                    (
                         timestamp,
                         ContactId::SELF,
                         self.id,
                         msg.param.get_float(Param::SetLatitude).unwrap_or_default(),
                         msg.param.get_float(Param::SetLongitude).unwrap_or_default(),
-                    ],
+                    ),
                 )
                 .await
             {
@@ -1577,7 +1573,12 @@ impl Chat {
             } else {
                 msg.param.get(Param::SendHtml).map(|s| s.to_string())
             };
-            html.map(|html| new_html_mimepart(html).build().as_string())
+            match html {
+                Some(html) => Some(tokio::task::block_in_place(move || {
+                    buf_compress(new_html_mimepart(html).build().as_string().as_bytes())
+                })?),
+                None => None,
+            }
         } else {
             None
         };
@@ -1591,9 +1592,10 @@ impl Chat {
                      SET rfc724_mid=?, chat_id=?, from_id=?, to_id=?, timestamp=?, type=?,
                          state=?, txt=?, subject=?, param=?,
                          hidden=?, mime_in_reply_to=?, mime_references=?, mime_modified=?,
-                         mime_headers=?, location_id=?, ephemeral_timer=?, ephemeral_timestamp=?
+                         mime_headers=?, mime_compressed=1, location_id=?, ephemeral_timer=?,
+                         ephemeral_timestamp=?
                      WHERE id=?;",
-                    paramsv![
+                    params_slice![
                         new_rfc724_mid,
                         self.id,
                         ContactId::SELF,
@@ -1637,11 +1639,12 @@ impl Chat {
                         mime_references,
                         mime_modified,
                         mime_headers,
+                        mime_compressed,
                         location_id,
                         ephemeral_timer,
                         ephemeral_timestamp)
-                        VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);",
-                    paramsv![
+                        VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,1,?,?,?);",
+                    params_slice![
                         new_rfc724_mid,
                         self.id,
                         ContactId::SELF,
@@ -1663,11 +1666,12 @@ impl Chat {
                     ],
                 )
                 .await?;
+            context.new_msgs_notify.notify_one();
             msg.id = MsgId::new(u32::try_from(raw_id)?);
 
             maybe_set_logging_xdc(context, msg, self.id).await?;
         }
-        context.interrupt_ephemeral_task().await;
+        context.scheduler.interrupt_ephemeral_task().await;
         Ok(msg.id)
     }
 }
@@ -1852,7 +1856,7 @@ async fn update_special_chat_name(
             .sql
             .execute(
                 "UPDATE chats SET name=? WHERE id=? AND name!=?",
-                paramsv![name, chat_id, name],
+                (&name, chat_id, &name),
             )
             .await?;
     }
@@ -1915,7 +1919,7 @@ impl ChatIdBlocked {
                   WHERE c.type=100  -- 100 = Chattype::Single
                     AND c.id>9      -- 9 = DC_CHAT_ID_LAST_SPECIAL
                     AND j.contact_id=?;",
-                paramsv![contact_id],
+                (contact_id,),
                 |row| {
                     let id: ChatId = row.get(0)?;
                     let blocked: Blocked = row.get(1)?;
@@ -1966,13 +1970,13 @@ impl ChatIdBlocked {
                     "INSERT INTO chats
                      (type, name, param, blocked, created_timestamp)
                      VALUES(?, ?, ?, ?, ?)",
-                    params![
+                    (
                         Chattype::Single,
                         chat_name,
                         params.to_string(),
                         create_blocked as u8,
-                        create_smeared_timestamp(context)
-                    ],
+                        create_smeared_timestamp(context),
+                    ),
                 )?;
                 let chat_id = ChatId::new(
                     transaction
@@ -1985,7 +1989,7 @@ impl ChatIdBlocked {
                     "INSERT INTO chats_contacts
                  (chat_id, contact_id)
                  VALUES((SELECT last_insert_rowid()), ?)",
-                    params![contact_id],
+                    (contact_id,),
                 )?;
 
                 Ok(chat_id)
@@ -2022,15 +2026,18 @@ async fn prepare_msg_blob(context: &Context, msg: &mut Message) -> Result<()> {
     if msg.viewtype == Viewtype::Text || msg.viewtype == Viewtype::VideochatInvitation {
         // the caller should check if the message text is empty
     } else if msg.viewtype.has_file() {
-        let blob = msg
+        let mut blob = msg
             .param
             .get_blob(Param::File, context, !msg.is_increation())
             .await?
             .with_context(|| format!("attachment missing for message of type #{}", msg.viewtype))?;
 
         if msg.viewtype == Viewtype::Image {
-            if let Err(e) = blob.recode_to_image_size(context).await {
-                warn!(context, "Cannot recode image, using original data: {:?}", e);
+            if let Err(err) = blob.recode_to_image_size(context).await {
+                warn!(
+                    context,
+                    "Cannot recode image, using original data: {err:#}."
+                );
             }
         }
         msg.param.set(Param::File, blob.as_name());
@@ -2142,7 +2149,7 @@ pub async fn is_contact_in_chat(
         .sql
         .exists(
             "SELECT COUNT(*) FROM chats_contacts WHERE chat_id=? AND contact_id=?;",
-            paramsv![chat_id, contact_id],
+            (chat_id, contact_id),
         )
         .await?;
     Ok(exists)
@@ -2194,6 +2201,13 @@ pub async fn send_msg_sync(context: &Context, chat_id: ChatId, msg: &mut Message
 }
 
 async fn send_msg_inner(context: &Context, chat_id: ChatId, msg: &mut Message) -> Result<MsgId> {
+    // protect all system messages againts RTLO attacks
+    if msg.is_system_message() {
+        if let Some(text) = &msg.text {
+            msg.text = Some(strip_rtlo_characters(text.as_ref()));
+        }
+    }
+
     if prepare_send_msg(context, chat_id, msg).await?.is_some() {
         context.emit_msgs_changed(msg.chat_id, msg.id);
 
@@ -2201,7 +2215,10 @@ async fn send_msg_inner(context: &Context, chat_id: ChatId, msg: &mut Message) -
             context.emit_event(EventType::LocationChanged(Some(ContactId::SELF)));
         }
 
-        context.interrupt_smtp(InterruptInfo::new(false)).await;
+        context
+            .scheduler
+            .interrupt_smtp(InterruptInfo::new(false))
+            .await;
     }
 
     Ok(msg.id)
@@ -2250,7 +2267,7 @@ async fn create_send_msg_job(context: &Context, msg_id: MsgId) -> Result<Option<
     let attach_selfavatar = match shall_attach_selfavatar(context, msg.chat_id).await {
         Ok(attach_selfavatar) => attach_selfavatar,
         Err(err) => {
-            warn!(context, "job: cannot get selfavatar-state: {:#}", err);
+            warn!(context, "SMTP job cannot get selfavatar-state: {err:#}.");
             false
         }
     };
@@ -2277,7 +2294,7 @@ async fn create_send_msg_job(context: &Context, msg_id: MsgId) -> Result<Option<
         // may happen eg. for groups with only SELF and bcc_self disabled
         info!(
             context,
-            "message {} has no recipient, skipping smtp-send", msg_id
+            "Message {msg_id} has no recipient, skipping smtp-send."
         );
         msg_id.set_delivered(context).await?;
         return Ok(None);
@@ -2312,27 +2329,27 @@ async fn create_send_msg_job(context: &Context, msg_id: MsgId) -> Result<Option<
 
     if 0 != rendered_msg.last_added_location_id {
         if let Err(err) = location::set_kml_sent_timestamp(context, msg.chat_id, time()).await {
-            error!(context, "Failed to set kml sent_timestamp: {:#}", err);
+            error!(context, "Failed to set kml sent_timestamp: {err:#}.");
         }
         if !msg.hidden {
             if let Err(err) =
                 location::set_msg_location_id(context, msg.id, rendered_msg.last_added_location_id)
                     .await
             {
-                error!(context, "Failed to set msg_location_id: {:#}", err);
+                error!(context, "Failed to set msg_location_id: {err:#}.");
             }
         }
     }
 
     if let Some(sync_ids) = rendered_msg.sync_ids_to_delete {
         if let Err(err) = context.delete_sync_ids(sync_ids).await {
-            error!(context, "Failed to delete sync ids: {:#}", err);
+            error!(context, "Failed to delete sync ids: {err:#}.");
         }
     }
 
     if attach_selfavatar {
         if let Err(err) = msg.chat_id.set_selfavatar_timestamp(context, time()).await {
-            error!(context, "Failed to set selfavatar timestamp: {:#}", err);
+            error!(context, "Failed to set selfavatar timestamp: {err:#}.");
         }
     }
 
@@ -2353,12 +2370,12 @@ async fn create_send_msg_job(context: &Context, msg_id: MsgId) -> Result<Option<
         .insert(
             "INSERT INTO smtp (rfc724_mid, recipients, mime, msg_id)
              VALUES           (?1,         ?2,         ?3,   ?4)",
-            paramsv![
+            (
                 &rendered_msg.rfc724_mid,
                 recipients,
                 &rendered_msg.message,
-                msg_id
-            ],
+                msg_id,
+            ),
         )
         .await?;
     Ok(Some(row_id))
@@ -2524,7 +2541,7 @@ pub async fn get_chat_msgs_ex(
                     OR m.from_id == ?
                     OR m.to_id == ?
                 );",
-                paramsv![chat_id, ContactId::INFO, ContactId::INFO],
+                (chat_id, ContactId::INFO, ContactId::INFO),
                 process_row,
                 process_rows,
             )
@@ -2537,7 +2554,7 @@ pub async fn get_chat_msgs_ex(
                FROM msgs m
               WHERE m.chat_id=?
                 AND m.hidden=0;",
-                paramsv![chat_id],
+                (chat_id,),
                 process_row,
                 process_rows,
             )
@@ -2555,7 +2572,7 @@ pub(crate) async fn marknoticed_chat_if_older_than(
         .sql
         .query_get_value(
             "SELECT MAX(timestamp) FROM msgs WHERE chat_id=?",
-            paramsv![chat_id],
+            (chat_id,),
         )
         .await?
     {
@@ -2605,7 +2622,7 @@ pub async fn marknoticed_chat(context: &Context, chat_id: ChatId) -> Result<()>
             .sql
             .exists(
                 "SELECT COUNT(*) FROM msgs WHERE state=? AND hidden=0 AND chat_id=?;",
-                paramsv![MessageState::InFresh, chat_id],
+                (MessageState::InFresh, chat_id),
             )
             .await?;
         if !exists {
@@ -2620,7 +2637,7 @@ pub async fn marknoticed_chat(context: &Context, chat_id: ChatId) -> Result<()>
               WHERE state=?
                 AND hidden=0
                 AND chat_id=?;",
-                paramsv![MessageState::InNoticed, MessageState::InFresh, chat_id],
+                (MessageState::InNoticed, MessageState::InFresh, chat_id),
             )
             .await?;
     }
@@ -2669,12 +2686,12 @@ pub(crate) async fn mark_old_messages_as_noticed(
             AND hidden=0
             AND chat_id=?
             AND timestamp<=?;",
-                    paramsv![
+                    (
                         MessageState::InNoticed,
                         MessageState::InFresh,
                         msg.chat_id,
-                        msg.sort_timestamp
-                    ],
+                        msg.sort_timestamp,
+                    ),
                 )?;
                 if changed_rows > 0 {
                     changed_chats.push(msg.chat_id);
@@ -2687,8 +2704,7 @@ pub(crate) async fn mark_old_messages_as_noticed(
     if !changed_chats.is_empty() {
         info!(
             context,
-            "Marking chats as noticed because there are newer outgoing messages: {:?}",
-            changed_chats
+            "Marking chats as noticed because there are newer outgoing messages: {changed_chats:?}."
         );
     }
 
@@ -2719,12 +2735,14 @@ pub async fn get_chat_media(
             "SELECT id
                FROM msgs
               WHERE (1=? OR chat_id=?)
+                AND chat_id != ?
                 AND (type=? OR type=? OR type=?)
                 AND hidden=0
               ORDER BY timestamp, id;",
-            paramsv![
+            (
                 chat_id.is_none(),
                 chat_id.unwrap_or_else(|| ChatId::new(0)),
+                DC_CHAT_ID_TRASH,
                 msg_type,
                 if msg_type2 != Viewtype::Unknown {
                     msg_type2
@@ -2736,7 +2754,7 @@ pub async fn get_chat_media(
                 } else {
                     msg_type
                 },
-            ],
+            ),
             |row| row.get::<_, MsgId>(0),
             |ids| Ok(ids.flatten().collect()),
         )
@@ -2814,7 +2832,7 @@ pub async fn get_chat_contacts(context: &Context, chat_id: ChatId) -> Result<Vec
                       ON c.id=cc.contact_id
               WHERE cc.chat_id=?
               ORDER BY c.id=1, c.last_seen DESC, c.id DESC;",
-            paramsv![chat_id],
+            (chat_id,),
             |row| row.get::<_, ContactId>(0),
             |ids| ids.collect::<Result<Vec<_>, _>>().map_err(Into::into),
         )
@@ -2840,12 +2858,12 @@ pub async fn create_group_chat(
             "INSERT INTO chats
         (type, name, grpid, param, created_timestamp)
         VALUES(?, ?, ?, \'U=1\', ?);",
-            paramsv![
+            (
                 Chattype::Group,
                 chat_name,
                 grpid,
                 create_smeared_timestamp(context),
-            ],
+            ),
         )
         .await?;
 
@@ -2878,7 +2896,7 @@ async fn find_unused_broadcast_list_name(context: &Context) -> Result<String> {
             .sql
             .exists(
                 "SELECT COUNT(*) FROM chats WHERE type=? AND name=?;",
-                paramsv![Chattype::Broadcast, better_name],
+                (Chattype::Broadcast, &better_name),
             )
             .await?
         {
@@ -2898,12 +2916,12 @@ pub async fn create_broadcast_list(context: &Context) -> Result<ChatId> {
             "INSERT INTO chats
         (type, name, grpid, param, created_timestamp)
         VALUES(?, ?, ?, \'U=1\', ?);",
-            paramsv![
+            (
                 Chattype::Broadcast,
                 chat_name,
                 grpid,
                 create_smeared_timestamp(context),
-            ],
+            ),
         )
         .await?;
     let chat_id = ChatId::new(u32::try_from(row_id)?);
@@ -2924,7 +2942,7 @@ pub(crate) async fn add_to_chat_contacts_table(
             for contact_id in contact_ids {
                 transaction.execute(
                     "INSERT OR IGNORE INTO chats_contacts (chat_id, contact_id) VALUES(?, ?)",
-                    paramsv![chat_id, contact_id],
+                    (chat_id, contact_id),
                 )?;
             }
             Ok(())
@@ -2944,7 +2962,7 @@ pub(crate) async fn remove_from_chat_contacts_table(
         .sql
         .execute(
             "DELETE FROM chats_contacts WHERE chat_id=? AND contact_id=?",
-            paramsv![chat_id, contact_id],
+            (chat_id, contact_id),
         )
         .await?;
     Ok(())
@@ -3009,7 +3027,7 @@ pub(crate) async fn add_contact_to_chat_ex(
         // if SELF is not in the group, members cannot be added at all.
         warn!(
             context,
-            "invalid attempt to add self e-mail address to group"
+            "Invalid attempt to add self e-mail address to group."
         );
         return Ok(false);
     }
@@ -3062,7 +3080,7 @@ pub(crate) async fn shall_attach_selfavatar(context: &Context, chat_id: ChatId)
            FROM chats_contacts cc
            LEFT JOIN contacts c ON c.id=cc.contact_id
           WHERE cc.chat_id=? AND cc.contact_id!=?;",
-            paramsv![chat_id, ContactId::SELF],
+            (chat_id, ContactId::SELF),
             |row| Ok(row.get::<_, i64>(0)),
             |rows| {
                 let mut needs_attach = false;
@@ -3135,7 +3153,7 @@ pub async fn set_muted(context: &Context, chat_id: ChatId, duration: MuteDuratio
         .sql
         .execute(
             "UPDATE chats SET muted_until=? WHERE id=?;",
-            paramsv![duration, chat_id],
+            (duration, chat_id),
         )
         .await
         .context(format!("Failed to set mute duration for {chat_id}"))?;
@@ -3222,10 +3240,7 @@ async fn set_group_explicitly_left(context: &Context, grpid: &str) -> Result<()>
     if !is_group_explicitly_left(context, grpid).await? {
         context
             .sql
-            .execute(
-                "INSERT INTO leftgrps (grpid) VALUES(?);",
-                paramsv![grpid.to_string()],
-            )
+            .execute("INSERT INTO leftgrps (grpid) VALUES(?);", (grpid,))
             .await?;
     }
 
@@ -3235,10 +3250,7 @@ async fn set_group_explicitly_left(context: &Context, grpid: &str) -> Result<()>
 pub(crate) async fn is_group_explicitly_left(context: &Context, grpid: &str) -> Result<bool> {
     let exists = context
         .sql
-        .exists(
-            "SELECT COUNT(*) FROM leftgrps WHERE grpid=?;",
-            paramsv![grpid],
-        )
+        .exists("SELECT COUNT(*) FROM leftgrps WHERE grpid=?;", (grpid,))
         .await?;
     Ok(exists)
 }
@@ -3270,7 +3282,7 @@ pub async fn set_chat_name(context: &Context, chat_id: ChatId, new_name: &str) -
                 .sql
                 .execute(
                     "UPDATE chats SET name=? WHERE id=?;",
-                    paramsv![new_name.to_string(), chat_id],
+                    (new_name.to_string(), chat_id),
                 )
                 .await?;
             if chat.is_promoted()
@@ -3433,7 +3445,10 @@ pub async fn forward_msgs(context: &Context, msg_ids: &[MsgId], chat_id: ChatId)
                     .await?;
                 curr_timestamp += 1;
                 if create_send_msg_job(context, new_msg_id).await?.is_some() {
-                    context.interrupt_smtp(InterruptInfo::new(false)).await;
+                    context
+                        .scheduler
+                        .interrupt_smtp(InterruptInfo::new(false))
+                        .await;
                 }
             }
             created_chats.push(chat_id);
@@ -3488,7 +3503,10 @@ pub async fn resend_msgs(context: &Context, msg_ids: &[MsgId]) -> Result<()> {
                 msg_id: msg.id,
             });
             if create_send_msg_job(context, msg.id).await?.is_some() {
-                context.interrupt_smtp(InterruptInfo::new(false)).await;
+                context
+                    .scheduler
+                    .interrupt_smtp(InterruptInfo::new(false))
+                    .await;
             }
         }
     }
@@ -3517,7 +3535,7 @@ pub(crate) async fn get_chat_id_by_grpid(
         .sql
         .query_row_optional(
             "SELECT id, blocked, protected FROM chats WHERE grpid=?;",
-            paramsv![grpid],
+            (grpid,),
             |row| {
                 let chat_id = row.get::<_, ChatId>(0)?;
 
@@ -3550,7 +3568,7 @@ pub async fn add_device_msg_with_importance(
 
     if let Some(label) = label {
         if was_device_msg_ever_added(context, label).await? {
-            info!(context, "device-message {} already added", label);
+            info!(context, "Device-message {label} already added.");
             return Ok(msg_id);
         }
     }
@@ -3571,7 +3589,7 @@ pub async fn add_device_msg_with_importance(
             .sql
             .query_get_value(
                 "SELECT MAX(timestamp) FROM msgs WHERE chat_id=?",
-                paramsv![chat_id],
+                (chat_id,),
             )
             .await?
         {
@@ -3596,7 +3614,7 @@ pub async fn add_device_msg_with_importance(
             param,
             rfc724_mid)
             VALUES (?,?,?,?,?,?,?,?,?,?,?);",
-                paramsv![
+                (
                     chat_id,
                     ContactId::DEVICE,
                     ContactId::SELF,
@@ -3608,9 +3626,10 @@ pub async fn add_device_msg_with_importance(
                     msg.text.as_ref().cloned().unwrap_or_default(),
                     msg.param.to_string(),
                     rfc724_mid,
-                ],
+                ),
             )
             .await?;
+        context.new_msgs_notify.notify_one();
 
         msg_id = MsgId::new(u32::try_from(row_id)?);
         if !msg.hidden {
@@ -3621,10 +3640,7 @@ pub async fn add_device_msg_with_importance(
     if let Some(label) = label {
         context
             .sql
-            .execute(
-                "INSERT INTO devmsglabels (label) VALUES (?);",
-                paramsv![label.to_string()],
-            )
+            .execute("INSERT INTO devmsglabels (label) VALUES (?);", (label,))
             .await?;
     }
 
@@ -3651,7 +3667,7 @@ pub async fn was_device_msg_ever_added(context: &Context, label: &str) -> Result
         .sql
         .exists(
             "SELECT COUNT(label) FROM devmsglabels WHERE label=?",
-            paramsv![label],
+            (label,),
         )
         .await?;
 
@@ -3668,10 +3684,7 @@ pub async fn was_device_msg_ever_added(context: &Context, label: &str) -> Result
 pub(crate) async fn delete_and_reset_all_device_msgs(context: &Context) -> Result<()> {
     context
         .sql
-        .execute(
-            "DELETE FROM msgs WHERE from_id=?;",
-            paramsv![ContactId::DEVICE],
-        )
+        .execute("DELETE FROM msgs WHERE from_id=?;", (ContactId::DEVICE,))
         .await?;
     context.sql.execute("DELETE FROM devmsglabels;", ()).await?;
 
@@ -3714,7 +3727,7 @@ pub(crate) async fn add_info_msg_with_cmd(
     context.sql.insert(
         "INSERT INTO msgs (chat_id,from_id,to_id,timestamp,timestamp_sent,timestamp_rcvd,type,state,txt,rfc724_mid,ephemeral_timer, param,mime_in_reply_to)
         VALUES (?,?,?, ?,?,?,?,?, ?,?,?, ?,?);",
-        paramsv![
+        (
             chat_id,
             from_id.unwrap_or(ContactId::INFO),
             ContactId::INFO,
@@ -3728,8 +3741,9 @@ pub(crate) async fn add_info_msg_with_cmd(
             ephemeral_timer,
             param.to_string(),
             parent.map(|msg|msg.rfc724_mid.clone()).unwrap_or_default()
-        ]
+        )
     ).await?;
+    context.new_msgs_notify.notify_one();
 
     let msg_id = MsgId::new(row_id.try_into()?);
     context.emit_msgs_changed(chat_id, msg_id);
@@ -3768,7 +3782,7 @@ pub(crate) async fn update_msg_text_and_timestamp(
         .sql
         .execute(
             "UPDATE msgs SET txt=?, timestamp=? WHERE id=?;",
-            paramsv![text, timestamp, msg_id],
+            (text, timestamp, msg_id),
         )
         .await?;
     context.emit_msgs_changed(chat_id, msg_id);
@@ -3781,8 +3795,10 @@ mod tests {
     use crate::chatlist::{get_archived_cnt, Chatlist};
     use crate::constants::{DC_GCL_ARCHIVED_ONLY, DC_GCL_NO_SPECIALS};
     use crate::contact::{Contact, ContactAddress};
+    use crate::message::delete_msgs;
     use crate::receive_imf::receive_imf;
     use crate::test_utils::TestContext;
+    use tokio::fs;
 
     #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
     async fn test_chat_info() {
@@ -5963,7 +5979,7 @@ mod tests {
             include_bytes!("../test-data/image/avatar64x64.png"),
         )
         .await?;
-        send_media(
+        let second_image_msg_id = send_media(
             &t,
             chat_id2,
             Viewtype::Image,
@@ -6065,6 +6081,47 @@ mod tests {
             4
         );
 
+        // Delete an image.
+        delete_msgs(&t, &[second_image_msg_id]).await?;
+        assert_eq!(
+            get_chat_media(
+                &t,
+                None,
+                Viewtype::Image,
+                Viewtype::Sticker,
+                Viewtype::Webxdc,
+            )
+            .await?
+            .len(),
+            3
+        );
+
+        Ok(())
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn test_blob_renaming() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+        let bob = TestContext::new_bob().await;
+        let chat_id = create_group_chat(&alice, ProtectionStatus::Unprotected, "Group").await?;
+        add_contact_to_chat(
+            &alice,
+            chat_id,
+            Contact::create(&alice, "bob", "bob@example.net").await?,
+        )
+        .await?;
+        let dir = tempfile::tempdir()?;
+        let file = dir.path().join("harmless_file.\u{202e}txt.exe");
+        fs::write(&file, "aaa").await?;
+        let mut msg = Message::new(Viewtype::File);
+        msg.set_file(file.to_str().unwrap(), None);
+        let msg = bob.recv_msg(&alice.send_msg(chat_id, &mut msg).await).await;
+
+        // the file bob receives should not contain BIDI-control characters
+        assert_eq!(
+            Some("$BLOBDIR/harmless_file.txt.exe"),
+            msg.param.get(Param::File),
+        );
         Ok(())
     }
 }

src/chatlist.rs

@@ -137,7 +137,7 @@ impl Chatlist {
                    AND c.id IN(SELECT chat_id FROM chats_contacts WHERE contact_id=?2)
                  GROUP BY c.id
                  ORDER BY c.archived=?3 DESC, IFNULL(m.timestamp,c.created_timestamp) DESC, m.id DESC;",
-                paramsv![MessageState::OutDraft, query_contact_id, ChatVisibility::Pinned],
+                (MessageState::OutDraft, query_contact_id, ChatVisibility::Pinned),
                 process_row,
                 process_rows,
             ).await?
@@ -164,7 +164,7 @@ impl Chatlist {
                    AND c.archived=1
                  GROUP BY c.id
                  ORDER BY IFNULL(m.timestamp,c.created_timestamp) DESC, m.id DESC;",
-                    paramsv![MessageState::OutDraft],
+                    (MessageState::OutDraft,),
                     process_row,
                     process_rows,
                 )
@@ -176,7 +176,7 @@ impl Chatlist {
             // allow searching over special names that may change at any time
             // when the ui calls set_stock_translation()
             if let Err(err) = update_special_chat_names(context).await {
-                warn!(context, "cannot update special chat names: {:?}", err)
+                warn!(context, "Cannot update special chat names: {err:#}.")
             }
 
             let str_like_cmd = format!("%{query}%");
@@ -198,7 +198,7 @@ impl Chatlist {
                    AND c.name LIKE ?3
                  GROUP BY c.id
                  ORDER BY IFNULL(m.timestamp,c.created_timestamp) DESC, m.id DESC;",
-                    paramsv![MessageState::OutDraft, skip_id, str_like_cmd],
+                    (MessageState::OutDraft, skip_id, str_like_cmd),
                     process_row,
                     process_rows,
                 )
@@ -228,7 +228,7 @@ impl Chatlist {
                    AND NOT c.archived=?4
                  GROUP BY c.id
                  ORDER BY c.id=?5 DESC, c.archived=?6 DESC, IFNULL(m.timestamp,c.created_timestamp) DESC, m.id DESC;",
-                paramsv![MessageState::OutDraft, skip_id, flag_for_forwarding, ChatVisibility::Archived, sort_id_up, ChatVisibility::Pinned],
+                (MessageState::OutDraft, skip_id, flag_for_forwarding, ChatVisibility::Archived, sort_id_up, ChatVisibility::Pinned),
                 process_row,
                 process_rows,
             ).await?;
@@ -311,13 +311,17 @@ impl Chatlist {
         };
 
         let (lastmsg, lastcontact) = if let Some(lastmsg_id) = lastmsg_id {
-            let lastmsg = Message::load_from_db(context, lastmsg_id).await?;
+            let lastmsg = Message::load_from_db(context, lastmsg_id)
+                .await
+                .context("loading message failed")?;
             if lastmsg.from_id == ContactId::SELF {
                 (Some(lastmsg), None)
             } else {
                 match chat.typ {
                     Chattype::Group | Chattype::Broadcast | Chattype::Mailinglist => {
-                        let lastcontact = Contact::load_from_db(context, lastmsg.from_id).await?;
+                        let lastcontact = Contact::load_from_db(context, lastmsg.from_id)
+                            .await
+                            .context("loading contact failed")?;
                         (Some(lastmsg), Some(lastcontact))
                     }
                     Chattype::Single | Chattype::Undefined => (Some(lastmsg), None),
@@ -356,12 +360,31 @@ pub async fn get_archived_cnt(context: &Context) -> Result<usize> {
         .sql
         .count(
             "SELECT COUNT(*) FROM chats WHERE blocked!=? AND archived=?;",
-            paramsv![Blocked::Yes, ChatVisibility::Archived],
+            (Blocked::Yes, ChatVisibility::Archived),
         )
         .await?;
     Ok(count)
 }
 
+/// Gets the last message of a chat, the message that would also be displayed in the ChatList
+/// Used for passing to `deltachat::chatlist::Chatlist::get_summary2`
+pub async fn get_last_message_for_chat(
+    context: &Context,
+    chat_id: ChatId,
+) -> Result<Option<MsgId>> {
+    context
+        .sql
+        .query_get_value(
+            "SELECT id
+                FROM msgs
+                WHERE chat_id=?2
+                AND (hidden=0 OR state=?1)
+                ORDER BY timestamp DESC, id DESC LIMIT 1",
+            (MessageState::OutDraft, chat_id),
+        )
+        .await
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src/config.rs

@@ -308,6 +308,9 @@ pub enum Config {
     /// This value is used internally to remember the MsgId of the logging xdc
     #[strum(props(default = "0"))]
     DebugLogging,
+
+    /// Last message processed by the bot.
+    LastMsgId,
 }
 
 impl Context {
@@ -358,6 +361,11 @@ impl Context {
         Ok(self.get_config_parsed(key).await?.unwrap_or_default())
     }
 
+    /// Returns 32-bit unsigned integer configuration value for the given key.
+    pub async fn get_config_u32(&self, key: Config) -> Result<u32> {
+        Ok(self.get_config_parsed(key).await?.unwrap_or_default())
+    }
+
     /// Returns 64-bit signed integer configuration value for the given key.
     pub async fn get_config_i64(&self, key: Config) -> Result<i64> {
         Ok(self.get_config_parsed(key).await?.unwrap_or_default())
@@ -443,7 +451,7 @@ impl Context {
             Config::DeleteDeviceAfter => {
                 let ret = self.sql.set_raw_config(key.as_ref(), value).await;
                 // Interrupt ephemeral loop to delete old messages immediately.
-                self.interrupt_ephemeral_task().await;
+                self.scheduler.interrupt_ephemeral_task().await;
                 ret?
             }
             Config::Displayname => {
@@ -459,6 +467,12 @@ impl Context {
         Ok(())
     }
 
+    /// Set the given config to an unsigned 32-bit integer value.
+    pub async fn set_config_u32(&self, key: Config, value: u32) -> Result<()> {
+        self.set_config(key, Some(&value.to_string())).await?;
+        Ok(())
+    }
+
     /// Set the given config to a boolean value.
     pub async fn set_config_bool(&self, key: Config, value: bool) -> Result<()> {
         self.set_config(key, if value { Some("1") } else { Some("0") })

src/configure.rs

@@ -1,8 +1,16 @@
-//! Email accounts autoconfiguration process module.
+//! # Email accounts autoconfiguration process.
+//!
+//! The module provides automatic lookup of configuration
+//! for email providers based on the built-in [provider database],
+//! [Mozilla Thunderbird Autoconfiguration protocol]
+//! and [Outlook's Autodiscover].
+//!
+//! [provider database]: crate::provider
+//! [Mozilla Thunderbird Autoconfiguration protocol]: auto_mozilla
+//! [Outlook's Autodiscover]: auto_outlook
 
 mod auto_mozilla;
 mod auto_outlook;
-mod read_url;
 mod server_params;
 
 use anyhow::{bail, ensure, Context as _, Result};
@@ -59,7 +67,7 @@ impl Context {
     /// Configures this account with the currently set parameters.
     pub async fn configure(&self) -> Result<()> {
         ensure!(
-            self.scheduler.read().await.is_none(),
+            !self.scheduler.is_running().await,
             "cannot configure, already running"
         );
         ensure!(
@@ -156,7 +164,9 @@ async fn on_configure_completed(
                     Some(stock_str::aeap_explanation_and_link(context, &old_addr, &new_addr).await);
                 chat::add_device_msg(context, None, Some(&mut msg))
                     .await
-                    .ok_or_log_msg(context, "Cannot add AEAP explanation");
+                    .context("Cannot add AEAP explanation")
+                    .log_err(context)
+                    .ok();
             }
         }
     }
@@ -469,7 +479,9 @@ async fn configure(ctx: &Context, param: &mut LoginParam) -> Result<()> {
 
     ctx.set_config_bool(Config::FetchedExistingMsgs, false)
         .await?;
-    ctx.interrupt_inbox(InterruptInfo::new(false)).await;
+    ctx.scheduler
+        .interrupt_inbox(InterruptInfo::new(false))
+        .await;
 
     progress!(ctx, 940);
     update_device_chats_handle.await??;

src/configure/auto_mozilla.rs

@@ -1,15 +1,15 @@
 //! # Thunderbird's Autoconfiguration implementation
 //!
-//! Documentation: <https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfiguration>
+//! Documentation: <https://web.archive.org/web/20210624004729/https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfiguration>
 use std::io::BufRead;
 use std::str::FromStr;
 
 use quick_xml::events::{BytesStart, Event};
 
-use super::read_url::read_url;
 use super::{Error, ServerParams};
 use crate::context::Context;
 use crate::login_param::LoginParam;
+use crate::net::read_url;
 use crate::provider::{Protocol, Socket};
 
 #[derive(Debug)]

src/configure/auto_outlook.rs

@@ -7,9 +7,9 @@ use std::io::BufRead;
 
 use quick_xml::events::Event;
 
-use super::read_url::read_url;
 use super::{Error, ServerParams};
 use crate::context::Context;
+use crate::net::read_url;
 use crate::provider::{Protocol, Socket};
 
 /// Result of parsing a single `Protocol` tag.

src/configure/read_url.rs

@@ -1,44 +0,0 @@
-use anyhow::{anyhow, format_err};
-
-use crate::context::Context;
-use crate::socks::Socks5Config;
-
-pub async fn read_url(context: &Context, url: &str) -> anyhow::Result<String> {
-    match read_url_inner(context, url).await {
-        Ok(s) => {
-            info!(context, "Successfully read url {}", url);
-            Ok(s)
-        }
-        Err(e) => {
-            info!(context, "Can't read URL {}: {:#}", url, e);
-            Err(format_err!("Can't read URL {}: {:#}", url, e))
-        }
-    }
-}
-
-pub async fn read_url_inner(context: &Context, url: &str) -> anyhow::Result<String> {
-    let socks5_config = Socks5Config::from_database(&context.sql).await?;
-    let client = crate::http::get_client(socks5_config)?;
-    let mut url = url.to_string();
-
-    // Follow up to 10 http-redirects
-    for _i in 0..10 {
-        let response = client.get(&url).send().await?;
-        if response.status().is_redirection() {
-            let headers = response.headers();
-            let header = headers
-                .get_all("location")
-                .iter()
-                .last()
-                .ok_or_else(|| anyhow!("Redirection doesn't have a target location"))?
-                .to_str()?;
-            info!(context, "Following redirect to {}", header);
-            url = header.to_string();
-            continue;
-        }
-
-        return response.text().await.map_err(Into::into);
-    }
-
-    Err(format_err!("Followed 10 redirections"))
-}

src/constants.rs

@@ -192,11 +192,15 @@ pub const DC_LP_AUTH_FLAGS: i32 = DC_LP_AUTH_OAUTH2 | DC_LP_AUTH_NORMAL;
 /// How many existing messages shall be fetched after configuration.
 pub(crate) const DC_FETCH_EXISTING_MSGS_COUNT: i64 = 100;
 
+// max. weight of images to send w/o recoding
+pub const BALANCED_IMAGE_BYTES: usize = 500_000;
+pub const WORSE_IMAGE_BYTES: usize = 130_000;
+
 // max. width/height of an avatar
 pub(crate) const BALANCED_AVATAR_SIZE: u32 = 256;
 pub(crate) const WORSE_AVATAR_SIZE: u32 = 128;
 
-// max. width/height of images
+// max. width/height of images scaled down because of being too huge
 pub const BALANCED_IMAGE_SIZE: u32 = 1280;
 pub const WORSE_IMAGE_SIZE: u32 = 640;
 

src/contact.rs

@@ -32,7 +32,10 @@ use crate::mimeparser::AvatarAction;
 use crate::param::{Param, Params};
 use crate::peerstate::{Peerstate, PeerstateVerifiedStatus};
 use crate::sql::{self, params_iter};
-use crate::tools::{duration_to_str, get_abs_path, improve_single_line_input, time, EmailAddress};
+use crate::tools::{
+    duration_to_str, get_abs_path, improve_single_line_input, strip_rtlo_characters, time,
+    EmailAddress,
+};
 use crate::{chat, stock_str};
 
 /// Time during which a contact is considered as seen recently.
@@ -344,7 +347,7 @@ impl Contact {
                 c.authname, c.param, c.status
                FROM contacts c
               WHERE c.id=?;",
-                paramsv![contact_id],
+                (contact_id,),
                 |row| {
                     let name: String = row.get(0)?;
                     let addr: String = row.get(1)?;
@@ -457,7 +460,7 @@ impl Contact {
             .sql
             .execute(
                 "UPDATE msgs SET state=? WHERE from_id=? AND state=?;",
-                paramsv![MessageState::InNoticed, id, MessageState::InFresh],
+                (MessageState::InNoticed, id, MessageState::InFresh),
             )
             .await?;
         Ok(())
@@ -490,7 +493,7 @@ impl Contact {
                 "SELECT id FROM contacts \
             WHERE addr=?1 COLLATE NOCASE \
             AND id>?2 AND origin>=?3 AND blocked=0;",
-                paramsv![addr_normalized, ContactId::LAST_SPECIAL, min_origin as u32,],
+                (&addr_normalized, ContactId::LAST_SPECIAL, min_origin as u32),
             )
             .await?;
         Ok(id)
@@ -536,7 +539,7 @@ impl Contact {
             return Ok((ContactId::SELF, sth_modified));
         }
 
-        let mut name = name;
+        let mut name = strip_rtlo_characters(name);
         #[allow(clippy::collapsible_if)]
         if origin <= Origin::OutgoingTo {
             // The user may accidentally have written to a "noreply" address with another MUA:
@@ -551,7 +554,7 @@ impl Contact {
                 // For these kind of email addresses, sender and address often don't belong together
                 // (like hocuri <notifications@github.com>). In this example, hocuri shouldn't
                 // be saved as the displayname for notifications@github.com.
-                name = "";
+                name = "".to_string();
             }
         }
 
@@ -605,7 +608,7 @@ impl Contact {
                     transaction
                         .execute(
                             "UPDATE contacts SET name=?, addr=?, origin=?, authname=? WHERE id=?;",
-                            paramsv![
+                            (
                                 new_name,
                                 if update_addr {
                                     addr.to_string()
@@ -623,7 +626,7 @@ impl Contact {
                                     row_authname
                                 },
                                 row_id
-                            ],
+                            ),
                         )?;
 
                     if update_name || update_authname {
@@ -631,7 +634,7 @@ impl Contact {
                         // This is one of the few duplicated data, however, getting the chat list is easier this way.
                         let chat_id: Option<ChatId> = transaction.query_row(
                             "SELECT id FROM chats WHERE type=? AND id IN(SELECT chat_id FROM chats_contacts WHERE contact_id=?)",
-                            params![Chattype::Single, isize::try_from(row_id)?],
+                            (Chattype::Single, isize::try_from(row_id)?),
                             |row| {
                                 let chat_id: ChatId = row.get(0)?;
                                 Ok(chat_id)
@@ -645,7 +648,7 @@ impl Contact {
                                     "SELECT addr, name, authname
                                      FROM contacts
                                      WHERE id=?",
-                                     params![contact_id],
+                                     (contact_id,),
                                 |row| {
                                     let addr: String = row.get(0)?;
                                     let name: String = row.get(1)?;
@@ -663,7 +666,7 @@ impl Contact {
 
                             let count = transaction.execute(
                                     "UPDATE chats SET name=?1 WHERE id=?2 AND name!=?1",
-                                    params![chat_name, chat_id])?;
+                                    (chat_name, chat_id))?;
 
                             if count > 0 {
                                 // Chat name updated
@@ -681,7 +684,7 @@ impl Contact {
                     .execute(
                         "INSERT INTO contacts (name, addr, origin, authname)
                          VALUES (?, ?, ?, ?);",
-                        params![
+                         (
                             if update_name {
                                 name.to_string()
                             } else {
@@ -694,7 +697,7 @@ impl Contact {
                             } else {
                                 "".to_string()
                             }
-                        ],
+                        ),
                     )?;
 
                 sth_modified = Modifier::Created;
@@ -795,12 +798,12 @@ impl Contact {
                  ORDER BY c.last_seen DESC, c.id DESC;",
                         sql::repeat_vars(self_addrs.len())
                     ),
-                    rusqlite::params_from_iter(params_iter(&self_addrs).chain(params_iterv![
+                    rusqlite::params_from_iter(params_iter(&self_addrs).chain(params_slice![
                         ContactId::LAST_SPECIAL,
                         Origin::IncomingReplyTo,
                         s3str_like_cmd,
                         s3str_like_cmd,
-                        if flag_verified_only { 0i32 } else { 1i32 },
+                        if flag_verified_only { 0i32 } else { 1i32 }
                     ])),
                     |row| row.get::<_, ContactId>(0),
                     |ids| {
@@ -847,7 +850,7 @@ impl Contact {
                  ORDER BY last_seen DESC, id DESC;",
                         sql::repeat_vars(self_addrs.len())
                     ),
-                    rusqlite::params_from_iter(params_iter(&self_addrs).chain(params_iterv![
+                    rusqlite::params_from_iter(params_iter(&self_addrs).chain(params_slice![
                         ContactId::LAST_SPECIAL,
                         Origin::IncomingReplyTo
                     ])),
@@ -880,7 +883,7 @@ impl Contact {
             .transaction(move |transaction| {
                 let mut stmt = transaction
                     .prepare("SELECT name, grpid FROM chats WHERE type=? AND blocked=?")?;
-                let rows = stmt.query_map(params![Chattype::Mailinglist, Blocked::Yes], |row| {
+                let rows = stmt.query_map((Chattype::Mailinglist, Blocked::Yes), |row| {
                     let name: String = row.get(0)?;
                     let grpid: String = row.get(1)?;
                     Ok((name, grpid))
@@ -902,7 +905,7 @@ impl Contact {
                     // Always do an update in case the blocking is reset or name is changed.
                     transaction.execute(
                         "UPDATE contacts SET name=?, origin=?, blocked=1 WHERE addr=?",
-                        params![&name, Origin::MailinglistAddress, &grpid],
+                        (&name, Origin::MailinglistAddress, &grpid),
                     )?;
                 }
                 Ok(())
@@ -917,7 +920,7 @@ impl Contact {
             .sql
             .count(
                 "SELECT COUNT(*) FROM contacts WHERE id>? AND blocked!=0",
-                paramsv![ContactId::LAST_SPECIAL],
+                (ContactId::LAST_SPECIAL,),
             )
             .await?;
         Ok(count)
@@ -933,7 +936,7 @@ impl Contact {
             .sql
             .query_map(
                 "SELECT id FROM contacts WHERE id>? AND blocked!=0 ORDER BY last_seen DESC, id DESC;",
-                paramsv![ContactId::LAST_SPECIAL],
+                (ContactId::LAST_SPECIAL,),
                 |row| row.get::<_, ContactId>(0),
                 |ids| {
                     ids.collect::<std::result::Result<Vec<_>, _>>()
@@ -1027,12 +1030,12 @@ impl Contact {
                 let deleted_contacts = transaction.execute(
                     "DELETE FROM contacts WHERE id=?
                      AND (SELECT COUNT(*) FROM chats_contacts WHERE contact_id=?)=0;",
-                    paramsv![contact_id, contact_id],
+                    (contact_id, contact_id),
                 )?;
                 if deleted_contacts == 0 {
                     transaction.execute(
                         "UPDATE contacts SET origin=? WHERE id=?;",
-                        paramsv![Origin::Hidden, contact_id],
+                        (Origin::Hidden, contact_id),
                     )?;
                 }
                 Ok(())
@@ -1060,7 +1063,7 @@ impl Contact {
             .sql
             .execute(
                 "UPDATE contacts SET param=? WHERE id=?",
-                paramsv![self.param.to_string(), self.id],
+                (self.param.to_string(), self.id),
             )
             .await?;
         Ok(())
@@ -1072,7 +1075,7 @@ impl Contact {
             .sql
             .execute(
                 "UPDATE contacts SET status=? WHERE id=?",
-                paramsv![self.status, self.id],
+                (&self.status, self.id),
             )
             .await?;
         Ok(())
@@ -1192,9 +1195,7 @@ impl Contact {
             if peerstate.verified_key.is_some() {
                 return Ok(VerifiedStatus::BidirectVerified);
             }
-        }
-
-        if let Some(peerstate) = Peerstate::from_addr(context, &self.addr).await? {
+        } else if let Some(peerstate) = Peerstate::from_addr(context, &self.addr).await? {
             if peerstate.verified_key.is_some() {
                 return Ok(VerifiedStatus::BidirectVerified);
             }
@@ -1230,7 +1231,7 @@ impl Contact {
             .sql
             .count(
                 "SELECT COUNT(*) FROM contacts WHERE id>?;",
-                paramsv![ContactId::LAST_SPECIAL],
+                (ContactId::LAST_SPECIAL,),
             )
             .await?;
         Ok(count)
@@ -1244,10 +1245,7 @@ impl Contact {
 
         let exists = context
             .sql
-            .exists(
-                "SELECT COUNT(*) FROM contacts WHERE id=?;",
-                paramsv![contact_id],
-            )
+            .exists("SELECT COUNT(*) FROM contacts WHERE id=?;", (contact_id,))
             .await?;
         Ok(exists)
     }
@@ -1262,7 +1260,7 @@ impl Contact {
             .sql
             .execute(
                 "UPDATE contacts SET origin=? WHERE id=? AND origin<?;",
-                paramsv![origin, contact_id, origin],
+                (origin, contact_id, origin),
             )
             .await?;
         Ok(())
@@ -1291,18 +1289,20 @@ fn sanitize_name_and_addr(name: &str, addr: &str) -> (String, String) {
     if let Some(captures) = ADDR_WITH_NAME_REGEX.captures(addr.as_ref()) {
         (
             if name.is_empty() {
-                captures
-                    .get(1)
-                    .map_or("".to_string(), |m| normalize_name(m.as_str()))
+                strip_rtlo_characters(
+                    &captures
+                        .get(1)
+                        .map_or("".to_string(), |m| normalize_name(m.as_str())),
+                )
             } else {
-                name.to_string()
+                strip_rtlo_characters(name)
             },
             captures
                 .get(2)
                 .map_or("".to_string(), |m| m.as_str().to_string()),
         )
     } else {
-        (name.to_string(), addr.to_string())
+        (strip_rtlo_characters(name), addr.to_string())
     }
 }
 
@@ -1324,7 +1324,7 @@ async fn set_block_contact(
             .sql
             .execute(
                 "UPDATE contacts SET blocked=? WHERE id=?;",
-                paramsv![i32::from(new_blocking), contact_id],
+                (i32::from(new_blocking), contact_id),
             )
             .await?;
 
@@ -1343,7 +1343,7 @@ WHERE type=? AND id IN (
   SELECT chat_id FROM chats_contacts WHERE contact_id=?
 );
 "#,
-                paramsv![new_blocking, Chattype::Single, contact_id],
+                (new_blocking, Chattype::Single, contact_id),
             )
             .await
             .is_ok()
@@ -1460,13 +1460,16 @@ pub(crate) async fn update_last_seen(
         .sql
         .execute(
             "UPDATE contacts SET last_seen = ?1 WHERE last_seen < ?1 AND id = ?2",
-            paramsv![timestamp, contact_id],
+            (timestamp, contact_id),
         )
         .await?
         > 0
         && timestamp > time() - SEEN_RECENTLY_SECONDS
     {
-        context.interrupt_recently_seen(contact_id, timestamp).await;
+        context
+            .scheduler
+            .interrupt_recently_seen(contact_id, timestamp)
+            .await;
     }
     Ok(())
 }
@@ -1486,7 +1489,7 @@ pub fn normalize_name(full_name: &str) -> String {
     match full_name.as_bytes() {
         [b'\'', .., b'\''] | [b'\"', .., b'\"'] | [b'<', .., b'>'] => full_name
             .get(1..full_name.len() - 1)
-            .map_or("".to_string(), |s| s.trim().into()),
+            .map_or("".to_string(), |s| s.trim().to_string()),
         _ => full_name.to_string(),
     }
 }
@@ -1572,7 +1575,7 @@ impl RecentlySeenLoop {
             .query_map(
                 "SELECT id, last_seen FROM contacts
                  WHERE last_seen > ?",
-                paramsv![time() - SEEN_RECENTLY_SECONDS],
+                (time() - SEEN_RECENTLY_SECONDS,),
                 |row| {
                     let contact_id: ContactId = row.get("id")?;
                     let last_seen: i64 = row.get("last_seen")?;

src/context.rs

@@ -11,20 +11,19 @@ use std::time::{Duration, Instant, SystemTime};
 use anyhow::{bail, ensure, Context as _, Result};
 use async_channel::{self as channel, Receiver, Sender};
 use ratelimit::Ratelimit;
-use tokio::sync::{Mutex, RwLock};
-use tokio::task;
+use tokio::sync::{Mutex, Notify, RwLock};
 
 use crate::chat::{get_chat_cnt, ChatId};
 use crate::config::Config;
 use crate::constants::DC_VERSION_STR;
 use crate::contact::Contact;
-use crate::debug_logging::DebugEventLogData;
+use crate::debug_logging::DebugLogging;
 use crate::events::{Event, EventEmitter, EventType, Events};
 use crate::key::{DcKey, SignedPublicKey};
 use crate::login_param::LoginParam;
 use crate::message::{self, MessageState, MsgId};
 use crate::quota::QuotaInfo;
-use crate::scheduler::Scheduler;
+use crate::scheduler::SchedulerState;
 use crate::sql::Sql;
 use crate::stock_str::StockStrings;
 use crate::timesmearing::SmearedTimestamp;
@@ -191,6 +190,10 @@ pub struct InnerContext {
     pub(crate) blobdir: PathBuf,
     pub(crate) sql: Sql,
     pub(crate) smeared_timestamp: SmearedTimestamp,
+    /// The global "ongoing" process state.
+    ///
+    /// This is a global mutex-like state for operations which should be modal in the
+    /// clients.
     running_state: RwLock<RunningState>,
     /// Mutex to avoid generating the key for the user more than once.
     pub(crate) generating_key_mutex: Mutex<()>,
@@ -201,7 +204,7 @@ pub struct InnerContext {
     pub(crate) translated_stockstrings: StockStrings,
     pub(crate) events: Events,
 
-    pub(crate) scheduler: RwLock<Option<Scheduler>>,
+    pub(crate) scheduler: SchedulerState,
     pub(crate) ratelimit: RwLock<Ratelimit>,
 
     /// Recently loaded quota information, if any.
@@ -214,6 +217,11 @@ pub struct InnerContext {
     /// IMAP UID resync request.
     pub(crate) resync_request: AtomicBool,
 
+    /// Notify about new messages.
+    ///
+    /// This causes [`Context::wait_next_msgs`] to wake up.
+    pub(crate) new_msgs_notify: Notify,
+
     /// Server ID response if ID capability is supported
     /// and the server returned non-NIL on the inbox connection.
     /// <https://datatracker.ietf.org/doc/html/rfc2971>
@@ -235,18 +243,10 @@ pub struct InnerContext {
     pub(crate) last_error: std::sync::RwLock<String>,
 
     /// If debug logging is enabled, this contains all necessary information
-    pub(crate) debug_logging: RwLock<Option<DebugLogging>>,
-}
-
-#[derive(Debug)]
-pub(crate) struct DebugLogging {
-    /// The message containing the logging xdc
-    pub(crate) msg_id: MsgId,
-    /// Handle to the background task responsible for sending
-    pub(crate) loop_handle: task::JoinHandle<()>,
-    /// Channel that log events should be send to
-    /// A background loop will receive and handle them
-    pub(crate) sender: Sender<DebugEventLogData>,
+    ///
+    /// Standard RwLock instead of [`tokio::sync::RwLock`] is used
+    /// because the lock is used from synchronous [`Context::emit_event`].
+    pub(crate) debug_logging: std::sync::RwLock<Option<DebugLogging>>,
 }
 
 /// The state of ongoing process.
@@ -256,7 +256,7 @@ enum RunningState {
     Running { cancel_sender: Sender<()> },
 
     /// Cancel signal has been sent, waiting for ongoing process to be freed.
-    ShallStop,
+    ShallStop { request: Instant },
 
     /// There is no ongoing process, a new one can be allocated.
     Stopped,
@@ -359,6 +359,11 @@ impl Context {
             blobdir.display()
         );
 
+        let new_msgs_notify = Notify::new();
+        // Notify once immediately to allow processing old messages
+        // without starting I/O.
+        new_msgs_notify.notify_one();
+
         let inner = InnerContext {
             id,
             blobdir,
@@ -370,16 +375,17 @@ impl Context {
             wrong_pw_warning_mutex: Mutex::new(()),
             translated_stockstrings: stockstrings,
             events,
-            scheduler: RwLock::new(None),
+            scheduler: SchedulerState::new(),
             ratelimit: RwLock::new(Ratelimit::new(Duration::new(60, 0), 6.0)), // Allow to send 6 messages immediately, no more than once every 10 seconds.
             quota: RwLock::new(None),
             quota_update_request: AtomicBool::new(false),
             resync_request: AtomicBool::new(false),
+            new_msgs_notify,
             server_id: RwLock::new(None),
             creation_time: std::time::SystemTime::now(),
             last_full_folder_scan: Mutex::new(None),
             last_error: std::sync::RwLock::new("".to_string()),
-            debug_logging: RwLock::new(None),
+            debug_logging: std::sync::RwLock::new(None),
         };
 
         let ctx = Context {
@@ -395,42 +401,23 @@ impl Context {
             warn!(self, "can not start io on a context that is not configured");
             return;
         }
-
-        info!(self, "starting IO");
-        let mut lock = self.inner.scheduler.write().await;
-        if lock.is_none() {
-            match Scheduler::start(self.clone()).await {
-                Err(err) => error!(self, "Failed to start IO: {:#}", err),
-                Ok(scheduler) => *lock = Some(scheduler),
-            }
-        }
+        self.scheduler.start(self.clone()).await;
     }
 
     /// Stops the IO scheduler.
     pub async fn stop_io(&self) {
-        // Sending an event wakes up event pollers (get_next_event)
-        // so the caller of stop_io() can arrange for proper termination.
-        // For this, the caller needs to instruct the event poller
-        // to terminate on receiving the next event and then call stop_io()
-        // which will emit the below event(s)
-        info!(self, "stopping IO");
-        if let Some(debug_logging) = self.debug_logging.read().await.as_ref() {
-            debug_logging.loop_handle.abort();
-        }
-        if let Some(scheduler) = self.inner.scheduler.write().await.take() {
-            scheduler.stop(self).await;
-        }
+        self.scheduler.stop(self).await;
     }
 
     /// Restarts the IO scheduler if it was running before
     /// when it is not running this is an no-op
     pub async fn restart_io_if_running(&self) {
-        info!(self, "restarting IO");
-        let is_running = { self.inner.scheduler.read().await.is_some() };
-        if is_running {
-            self.stop_io().await;
-            self.start_io().await;
-        }
+        self.scheduler.restart(self).await;
+    }
+
+    /// Indicate that the network likely has come back.
+    pub async fn maybe_network(&self) {
+        self.scheduler.maybe_network().await;
     }
 
     /// Returns a reference to the underlying SQL instance.
@@ -453,41 +440,18 @@ impl Context {
 
     /// Emits a single event.
     pub fn emit_event(&self, event: EventType) {
-        if self
-            .debug_logging
-            .try_read()
-            .ok()
-            .map(|inner| inner.is_some())
-            == Some(true)
         {
-            self.send_log_event(event.clone()).ok();
-        };
+            let lock = self.debug_logging.read().expect("RwLock is poisoned");
+            if let Some(debug_logging) = &*lock {
+                debug_logging.log_event(event.clone());
+            }
+        }
         self.events.emit(Event {
             id: self.id,
             typ: event,
         });
     }
 
-    pub(crate) fn send_log_event(&self, event: EventType) -> anyhow::Result<()> {
-        if let Ok(lock) = self.debug_logging.try_read() {
-            if let Some(DebugLogging {
-                msg_id: xdc_id,
-                sender,
-                ..
-            }) = &*lock
-            {
-                let event_data = DebugEventLogData {
-                    time: time(),
-                    msg_id: *xdc_id,
-                    event,
-                };
-
-                sender.try_send(event_data).ok();
-            }
-        }
-        Ok(())
-    }
-
     /// Emits a generic MsgsChanged event (without chat or message id)
     pub fn emit_msgs_changed_without_ids(&self) {
         self.emit_event(EventType::MsgsChanged {
@@ -521,6 +485,13 @@ impl Context {
 
     // Ongoing process allocation/free/check
 
+    /// Tries to acquire the global UI "ongoing" mutex.
+    ///
+    /// This is for modal operations during which no other user actions are allowed.  Only
+    /// one such operation is allowed at any given time.
+    ///
+    /// The return value is a cancel token, which will release the ongoing mutex when
+    /// dropped.
     pub(crate) async fn alloc_ongoing(&self) -> Result<Receiver<()>> {
         let mut s = self.running_state.write().await;
         ensure!(
@@ -538,6 +509,9 @@ impl Context {
 
     pub(crate) async fn free_ongoing(&self) {
         let mut s = self.running_state.write().await;
+        if let RunningState::ShallStop { request } = *s {
+            info!(self, "Ongoing stopped in {:?}", request.elapsed());
+        }
         *s = RunningState::Stopped;
     }
 
@@ -550,9 +524,11 @@ impl Context {
                     warn!(self, "could not cancel ongoing: {:#}", err);
                 }
                 info!(self, "Signaling the ongoing process to stop ASAP.",);
-                *s = RunningState::ShallStop;
+                *s = RunningState::ShallStop {
+                    request: Instant::now(),
+                };
             }
-            RunningState::ShallStop | RunningState::Stopped => {
+            RunningState::ShallStop { .. } | RunningState::Stopped => {
                 info!(self, "No ongoing process to stop.",);
             }
         }
@@ -562,7 +538,7 @@ impl Context {
     pub(crate) async fn shall_stop_ongoing(&self) -> bool {
         match &*self.running_state.read().await {
             RunningState::Running { .. } => false,
-            RunningState::ShallStop | RunningState::Stopped => true,
+            RunningState::ShallStop { .. } | RunningState::Stopped => true,
         }
     }
 
@@ -775,6 +751,10 @@ impl Context {
             "debug_logging",
             self.get_config_int(Config::DebugLogging).await?.to_string(),
         );
+        res.insert(
+            "last_msg_id",
+            self.get_config_int(Config::LastMsgId).await?.to_string(),
+        );
 
         let elapsed = self.creation_time.elapsed();
         res.insert("uptime", duration_to_str(elapsed.unwrap_or_default()));
@@ -807,7 +787,7 @@ impl Context {
                     "   AND NOT(c.muted_until=-1 OR c.muted_until>?)",
                     " ORDER BY m.timestamp DESC,m.id DESC;"
                 ),
-                paramsv![MessageState::InFresh, time()],
+                (MessageState::InFresh, time()),
                 |row| row.get::<_, MsgId>(0),
                 |rows| {
                     let mut list = Vec::new();
@@ -821,6 +801,66 @@ impl Context {
         Ok(list)
     }
 
+    /// Returns a list of messages with database ID higher than requested.
+    ///
+    /// Blocked contacts and chats are excluded,
+    /// but self-sent messages and contact requests are included in the results.
+    pub async fn get_next_msgs(&self) -> Result<Vec<MsgId>> {
+        let last_msg_id = match self.get_config(Config::LastMsgId).await? {
+            Some(s) => MsgId::new(s.parse()?),
+            None => MsgId::new_unset(),
+        };
+
+        let list = self
+            .sql
+            .query_map(
+                "SELECT m.id
+                     FROM msgs m
+                     LEFT JOIN contacts ct
+                            ON m.from_id=ct.id
+                     LEFT JOIN chats c
+                            ON m.chat_id=c.id
+                     WHERE m.id>?
+                       AND m.hidden=0
+                       AND m.chat_id>9
+                       AND ct.blocked=0
+                       AND c.blocked!=1
+                     ORDER BY m.id ASC",
+                (
+                    last_msg_id.to_u32(), // Explicitly convert to u32 because 0 is allowed.
+                ),
+                |row| {
+                    let msg_id: MsgId = row.get(0)?;
+                    Ok(msg_id)
+                },
+                |rows| {
+                    let mut list = Vec::new();
+                    for row in rows {
+                        list.push(row?);
+                    }
+                    Ok(list)
+                },
+            )
+            .await?;
+        Ok(list)
+    }
+
+    /// Returns a list of messages with database ID higher than last marked as seen.
+    ///
+    /// This function is supposed to be used by bot to request messages
+    /// that are not processed yet.
+    ///
+    /// Waits for notification and returns a result.
+    /// Note that the result may be empty if the message is deleted
+    /// shortly after notification or notification is manually triggered
+    /// to interrupt waiting.
+    /// Notification may be manually triggered by calling [`Self::stop_io`].
+    pub async fn wait_next_msgs(&self) -> Result<Vec<MsgId>> {
+        self.new_msgs_notify.notified().await;
+        let list = self.get_next_msgs().await?;
+        Ok(list)
+    }
+
     /// Searches for messages containing the query string.
     ///
     /// If `chat_id` is provided this searches only for messages in this chat, if `chat_id`
@@ -832,24 +872,10 @@ impl Context {
         }
         let str_like_in_text = format!("%{real_query}%");
 
-        let do_query = |query, params| {
-            self.sql.query_map(
-                query,
-                params,
-                |row| row.get::<_, MsgId>("id"),
-                |rows| {
-                    let mut ret = Vec::new();
-                    for id in rows {
-                        ret.push(id?);
-                    }
-                    Ok(ret)
-                },
-            )
-        };
-
         let list = if let Some(chat_id) = chat_id {
-            do_query(
-                "SELECT m.id AS id
+            self.sql
+                .query_map(
+                    "SELECT m.id AS id
                  FROM msgs m
                  LEFT JOIN contacts ct
                         ON m.from_id=ct.id
@@ -858,9 +884,17 @@ impl Context {
                    AND ct.blocked=0
                    AND txt LIKE ?
                  ORDER BY m.timestamp,m.id;",
-                paramsv![chat_id, str_like_in_text],
-            )
-            .await?
+                    (chat_id, str_like_in_text),
+                    |row| row.get::<_, MsgId>("id"),
+                    |rows| {
+                        let mut ret = Vec::new();
+                        for id in rows {
+                            ret.push(id?);
+                        }
+                        Ok(ret)
+                    },
+                )
+                .await?
         } else {
             // For performance reasons results are sorted only by `id`, that is in the order of
             // message reception.
@@ -872,8 +906,9 @@ impl Context {
             // of unwanted results that are discarded moments later, we added `LIMIT 1000`.
             // According to some tests, this limit speeds up eg. 2 character searches by factor 10.
             // The limit is documented and UI may add a hint when getting 1000 results.
-            do_query(
-                "SELECT m.id AS id
+            self.sql
+                .query_map(
+                    "SELECT m.id AS id
                  FROM msgs m
                  LEFT JOIN contacts ct
                         ON m.from_id=ct.id
@@ -885,9 +920,17 @@ impl Context {
                    AND ct.blocked=0
                    AND m.txt LIKE ?
                  ORDER BY m.id DESC LIMIT 1000",
-                paramsv![str_like_in_text],
-            )
-            .await?
+                    (str_like_in_text,),
+                    |row| row.get::<_, MsgId>("id"),
+                    |rows| {
+                        let mut ret = Vec::new();
+                        for id in rows {
+                            ret.push(id?);
+                        }
+                        Ok(ret)
+                    },
+                )
+                .await?
         };
 
         Ok(list)
@@ -1097,7 +1140,7 @@ mod tests {
         t.sql
             .execute(
                 "UPDATE chats SET muted_until=? WHERE id=?;",
-                paramsv![time() - 3600, bob.id],
+                (time() - 3600, bob.id),
             )
             .await
             .unwrap();
@@ -1114,10 +1157,7 @@ mod tests {
         // to test get_fresh_msgs() with invalid mute_until (everything < -1),
         // that results in "muted forever" by definition.
         t.sql
-            .execute(
-                "UPDATE chats SET muted_until=-2 WHERE id=?;",
-                paramsv![bob.id],
-            )
+            .execute("UPDATE chats SET muted_until=-2 WHERE id=?;", (bob.id,))
             .await
             .unwrap();
         let bob = Chat::load_from_db(&t, bob.id).await.unwrap();
@@ -1452,4 +1492,38 @@ mod tests {
 
         Ok(())
     }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn test_get_next_msgs() -> Result<()> {
+        let alice = TestContext::new_alice().await;
+        let bob = TestContext::new_bob().await;
+
+        let alice_chat = alice.create_chat(&bob).await;
+
+        assert!(alice.get_next_msgs().await?.is_empty());
+        assert!(bob.get_next_msgs().await?.is_empty());
+
+        let sent_msg = alice.send_text(alice_chat.id, "Hi Bob").await;
+        let received_msg = bob.recv_msg(&sent_msg).await;
+
+        let bob_next_msg_ids = bob.get_next_msgs().await?;
+        assert_eq!(bob_next_msg_ids.len(), 1);
+        assert_eq!(bob_next_msg_ids.get(0), Some(&received_msg.id));
+
+        bob.set_config_u32(Config::LastMsgId, received_msg.id.to_u32())
+            .await?;
+        assert!(bob.get_next_msgs().await?.is_empty());
+
+        // Next messages include self-sent messages.
+        let alice_next_msg_ids = alice.get_next_msgs().await?;
+        assert_eq!(alice_next_msg_ids.len(), 1);
+        assert_eq!(alice_next_msg_ids.get(0), Some(&sent_msg.sender_msg_id));
+
+        alice
+            .set_config_u32(Config::LastMsgId, sent_msg.sender_msg_id.to_u32())
+            .await?;
+        assert!(alice.get_next_msgs().await?.is_empty());
+
+        Ok(())
+    }
 }

src/debug_logging.rs

@@ -2,17 +2,41 @@
 use crate::{
     chat::ChatId,
     config::Config,
-    context::{Context, DebugLogging},
+    context::Context,
     message::{Message, MsgId, Viewtype},
     param::Param,
+    tools::time,
     webxdc::StatusUpdateItem,
-    Event, EventType,
+    EventType,
 };
-use async_channel::{self as channel, Receiver};
+use async_channel::{self as channel, Receiver, Sender};
 use serde_json::json;
 use std::path::PathBuf;
 use tokio::task;
 
+#[derive(Debug)]
+pub(crate) struct DebugLogging {
+    /// The message containing the logging xdc
+    pub(crate) msg_id: MsgId,
+    /// Handle to the background task responsible for sending
+    pub(crate) loop_handle: task::JoinHandle<()>,
+    /// Channel that log events should be sent to.
+    /// A background loop will receive and handle them.
+    pub(crate) sender: Sender<DebugEventLogData>,
+}
+
+impl DebugLogging {
+    pub(crate) fn log_event(&self, event: EventType) {
+        let event_data = DebugEventLogData {
+            time: time(),
+            msg_id: self.msg_id,
+            event,
+        };
+
+        self.sender.try_send(event_data).ok();
+    }
+}
+
 /// Store all information needed to log an event to a webxdc.
 pub struct DebugEventLogData {
     pub time: i64,
@@ -48,12 +72,9 @@ pub async fn debug_logging_loop(context: &Context, events: Receiver<DebugEventLo
                 eprintln!("Can't log event to webxdc status update: {err:#}");
             }
             Ok(serial) => {
-                context.events.emit(Event {
-                    id: context.id,
-                    typ: EventType::WebxdcStatusUpdate {
-                        msg_id,
-                        status_update_serial: serial,
-                    },
+                context.emit_event(EventType::WebxdcStatusUpdate {
+                    msg_id,
+                    status_update_serial: serial,
                 });
             }
         }
@@ -112,24 +133,26 @@ pub(crate) async fn set_debug_logging_xdc(ctx: &Context, id: Option<MsgId>) -> a
                     Some(msg_id.to_string().as_ref()),
                 )
                 .await?;
-            let debug_logging = &mut *ctx.debug_logging.write().await;
-            match debug_logging {
-                // Switch logging xdc
-                Some(debug_logging) => debug_logging.msg_id = msg_id,
-                // Bootstrap background loop for message forwarding
-                None => {
-                    let (sender, debug_logging_recv) = channel::bounded(1000);
-                    let loop_handle = {
-                        let ctx = ctx.clone();
-                        task::spawn(
-                            async move { debug_logging_loop(&ctx, debug_logging_recv).await },
-                        )
-                    };
-                    *debug_logging = Some(DebugLogging {
-                        msg_id,
-                        loop_handle,
-                        sender,
-                    });
+            {
+                let debug_logging = &mut *ctx.debug_logging.write().expect("RwLock is poisoned");
+                match debug_logging {
+                    // Switch logging xdc
+                    Some(debug_logging) => debug_logging.msg_id = msg_id,
+                    // Bootstrap background loop for message forwarding
+                    None => {
+                        let (sender, debug_logging_recv) = channel::bounded(1000);
+                        let loop_handle = {
+                            let ctx = ctx.clone();
+                            task::spawn(async move {
+                                debug_logging_loop(&ctx, debug_logging_recv).await
+                            })
+                        };
+                        *debug_logging = Some(DebugLogging {
+                            msg_id,
+                            loop_handle,
+                            sender,
+                        });
+                    }
                 }
             }
             info!(ctx, "replacing logging webxdc");
@@ -139,7 +162,7 @@ pub(crate) async fn set_debug_logging_xdc(ctx: &Context, id: Option<MsgId>) -> a
             ctx.sql
                 .set_raw_config(Config::DebugLogging.as_ref(), None)
                 .await?;
-            *ctx.debug_logging.write().await = None;
+            *ctx.debug_logging.write().expect("RwLock is poisoned") = None;
             info!(ctx, "removing logging webxdc");
         }
     }

src/download.rs

@@ -101,7 +101,7 @@ impl MsgId {
             .sql
             .execute(
                 "UPDATE msgs SET download_state=? WHERE id=?;",
-                paramsv![download_state, self],
+                (download_state, self),
             )
             .await?;
         context.emit_event(EventType::MsgsChanged {
@@ -134,7 +134,7 @@ impl Job {
                 .sql
                 .query_row_optional(
                     "SELECT uid, folder FROM imap WHERE rfc724_mid=? AND target=folder",
-                    paramsv![msg.rfc724_mid],
+                    (&msg.rfc724_mid,),
                     |row| {
                         let server_uid: u32 = row.get(0)?;
                         let server_folder: String = row.get(1)?;

src/ephemeral.rs

@@ -174,10 +174,7 @@ impl ChatId {
     pub async fn get_ephemeral_timer(self, context: &Context) -> Result<Timer> {
         let timer = context
             .sql
-            .query_get_value(
-                "SELECT ephemeral_timer FROM chats WHERE id=?;",
-                paramsv![self],
-            )
+            .query_get_value("SELECT ephemeral_timer FROM chats WHERE id=?;", (self,))
             .await?;
         Ok(timer.unwrap_or_default())
     }
@@ -199,7 +196,7 @@ impl ChatId {
                 "UPDATE chats
              SET ephemeral_timer=?
              WHERE id=?;",
-                paramsv![timer, self],
+                (timer, self),
             )
             .await?;
 
@@ -291,10 +288,7 @@ impl MsgId {
     pub(crate) async fn ephemeral_timer(self, context: &Context) -> Result<Timer> {
         let res = match context
             .sql
-            .query_get_value(
-                "SELECT ephemeral_timer FROM msgs WHERE id=?",
-                paramsv![self],
-            )
+            .query_get_value("SELECT ephemeral_timer FROM msgs WHERE id=?", (self,))
             .await?
         {
             None | Some(0) => Timer::Disabled,
@@ -314,10 +308,10 @@ impl MsgId {
                     "UPDATE msgs SET ephemeral_timestamp = ? \
                 WHERE (ephemeral_timestamp == 0 OR ephemeral_timestamp > ?) \
                 AND id = ?",
-                    paramsv![ephemeral_timestamp, ephemeral_timestamp, self],
+                    (ephemeral_timestamp, ephemeral_timestamp, self),
                 )
                 .await?;
-            context.interrupt_ephemeral_task().await;
+            context.scheduler.interrupt_ephemeral_task().await;
         }
         Ok(())
     }
@@ -338,14 +332,14 @@ pub(crate) async fn start_ephemeral_timers_msgids(
                 sql::repeat_vars(msg_ids.len())
             ),
             rusqlite::params_from_iter(
-                std::iter::once(&now as &dyn crate::ToSql)
-                    .chain(std::iter::once(&now as &dyn crate::ToSql))
+                std::iter::once(&now as &dyn crate::sql::ToSql)
+                    .chain(std::iter::once(&now as &dyn crate::sql::ToSql))
                     .chain(params_iter(msg_ids)),
             ),
         )
         .await?;
     if count > 0 {
-        context.interrupt_ephemeral_task().await;
+        context.scheduler.interrupt_ephemeral_task().await;
     }
     Ok(())
 }
@@ -369,7 +363,7 @@ WHERE
   AND ephemeral_timestamp <= ?
   AND chat_id != ?
 "#,
-            paramsv![now, DC_CHAT_ID_TRASH],
+            (now, DC_CHAT_ID_TRASH),
             |row| {
                 let id: MsgId = row.get("id")?;
                 let chat_id: ChatId = row.get("chat_id")?;
@@ -402,12 +396,12 @@ WHERE
   AND chat_id != ?
   AND chat_id != ?
 "#,
-                paramsv![
+                (
                     threshold_timestamp,
                     DC_CHAT_ID_LAST_SPECIAL,
                     self_chat_id,
-                    device_chat_id
-                ],
+                    device_chat_id,
+                ),
                 |row| {
                     let id: MsgId = row.get("id")?;
                     let chat_id: ChatId = row.get("chat_id")?;
@@ -449,7 +443,7 @@ pub(crate) async fn delete_expired_messages(context: &Context, now: i64) -> Resu
                      SET chat_id=?, txt='', subject='', txt_raw='',
                          mime_headers='', from_id=0, to_id=0, param=''
                      WHERE id=?",
-                        params![DC_CHAT_ID_TRASH, msg_id],
+                        (DC_CHAT_ID_TRASH, msg_id),
                     )?;
 
                     msgs_changed.push((chat_id, msg_id));
@@ -494,7 +488,7 @@ async fn next_delete_device_after_timestamp(context: &Context) -> Result<Option<
                   AND chat_id != ?
                   AND chat_id != ?;
                 "#,
-                paramsv![DC_CHAT_ID_TRASH, self_chat_id, device_chat_id],
+                (DC_CHAT_ID_TRASH, self_chat_id, device_chat_id),
             )
             .await?;
 
@@ -518,7 +512,7 @@ async fn next_expiration_timestamp(context: &Context) -> Option<i64> {
             WHERE ephemeral_timestamp != 0
               AND chat_id != ?;
             "#,
-            paramsv![DC_CHAT_ID_TRASH], // Trash contains already deleted messages, skip them
+            (DC_CHAT_ID_TRASH,), // Trash contains already deleted messages, skip them
         )
         .await
     {
@@ -575,7 +569,8 @@ pub(crate) async fn ephemeral_loop(context: &Context, interrupt_receiver: Receiv
 
         delete_expired_messages(context, time())
             .await
-            .ok_or_log(context);
+            .log_err(context)
+            .ok();
     }
 }
 
@@ -604,12 +599,12 @@ pub(crate) async fn delete_expired_imap_messages(context: &Context) -> Result<()
                       (download_state != 0 AND timestamp < ?) OR
                       (ephemeral_timestamp != 0 AND ephemeral_timestamp <= ?))
              )",
-            paramsv![
-                target,
+            (
+                &target,
                 threshold_timestamp,
                 threshold_timestamp_extended,
                 now,
-            ],
+            ),
         )
         .await?;
 
@@ -634,12 +629,12 @@ pub(crate) async fn start_ephemeral_timers(context: &Context) -> Result<()> {
     WHERE ephemeral_timer > 0 \
     AND ephemeral_timestamp = 0 \
     AND state NOT IN (?, ?, ?)",
-            paramsv![
+            (
                 time(),
                 MessageState::InFresh,
                 MessageState::InNoticed,
-                MessageState::OutDraft
-            ],
+                MessageState::OutDraft,
+            ),
         )
         .await?;
 
@@ -1105,7 +1100,7 @@ mod tests {
             assert!(msg.text.is_none_or_empty(), "{:?}", msg.text);
             let rawtxt: Option<String> = t
                 .sql
-                .query_get_value("SELECT txt_raw FROM msgs WHERE id=?;", paramsv![msg_id])
+                .query_get_value("SELECT txt_raw FROM msgs WHERE id=?;", (msg_id,))
                 .await
                 .unwrap();
             assert!(rawtxt.is_none_or_empty(), "{rawtxt:?}");
@@ -1130,13 +1125,13 @@ mod tests {
             t.sql
                    .execute(
                        "INSERT INTO msgs (id, rfc724_mid, timestamp, ephemeral_timestamp) VALUES (?,?,?,?);",
-                       paramsv![id, message_id, timestamp, ephemeral_timestamp],
+                       (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],
+                       (&message_id, id),
                    )
                    .await?;
         }
@@ -1147,7 +1142,7 @@ mod tests {
                     .sql
                     .count(
                         "SELECT COUNT(*) FROM imap WHERE target='' AND rfc724_mid=?",
-                        paramsv![id.to_string()],
+                        (id.to_string(),),
                     )
                     .await?,
                 1
@@ -1158,10 +1153,7 @@ mod tests {
         async fn remove_uid(context: &Context, id: u32) -> Result<()> {
             context
                 .sql
-                .execute(
-                    "DELETE FROM imap WHERE rfc724_mid=?",
-                    paramsv![id.to_string()],
-                )
+                .execute("DELETE FROM imap WHERE rfc724_mid=?", (id.to_string(),))
                 .await?;
             Ok(())
         }

src/events.rs

@@ -1,15 +1,10 @@
 //! # Events specification.
 
-use std::path::PathBuf;
-
 use async_channel::{self as channel, Receiver, Sender, TrySendError};
-use serde::Serialize;
 
-use crate::chat::ChatId;
-use crate::contact::ContactId;
-use crate::ephemeral::Timer as EphemeralTimer;
-use crate::message::MsgId;
-use crate::webxdc::StatusUpdateSerial;
+mod payload;
+
+pub use self::payload::EventType;
 
 /// Event channel.
 #[derive(Debug, Clone)]
@@ -32,7 +27,9 @@ impl Events {
         Self { receiver, sender }
     }
 
-    /// Emits an event.
+    /// Emits an event into event channel.
+    ///
+    /// If the channel is full, deletes the oldest event first.
     pub fn emit(&self, event: Event) {
         match self.sender.try_send(event) {
             Ok(()) => {}
@@ -49,7 +46,7 @@ impl Events {
         }
     }
 
-    /// Retrieve the event emitter.
+    /// Creates an event emitter.
     pub fn get_emitter(&self) -> EventEmitter {
         EventEmitter(self.receiver.clone())
     }
@@ -108,248 +105,3 @@ pub struct Event {
     /// These are documented in `deltachat.h` as the `DC_EVENT_*` constants.
     pub typ: EventType,
 }
-
-/// Event payload.
-#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
-pub enum EventType {
-    /// The library-user may write an informational string to the log.
-    ///
-    /// This event should *not* be reported to the end-user using a popup or something like
-    /// that.
-    Info(String),
-
-    /// Emitted when SMTP connection is established and login was successful.
-    SmtpConnected(String),
-
-    /// Emitted when IMAP connection is established and login was successful.
-    ImapConnected(String),
-
-    /// Emitted when a message was successfully sent to the SMTP server.
-    SmtpMessageSent(String),
-
-    /// Emitted when an IMAP message has been marked as deleted
-    ImapMessageDeleted(String),
-
-    /// Emitted when an IMAP message has been moved
-    ImapMessageMoved(String),
-
-    /// Emitted when an new file in the $BLOBDIR was created
-    NewBlobFile(String),
-
-    /// Emitted when an file in the $BLOBDIR was deleted
-    DeletedBlobFile(String),
-
-    /// The library-user should write a warning string to the log.
-    ///
-    /// This event should *not* be reported to the end-user using a popup or something like
-    /// that.
-    Warning(String),
-
-    /// The library-user should report an error to the end-user.
-    ///
-    /// As most things are asynchronous, things may go wrong at any time and the user
-    /// should not be disturbed by a dialog or so.  Instead, use a bubble or so.
-    ///
-    /// However, for ongoing processes (eg. configure())
-    /// or for functions that are expected to fail (eg. dc_continue_key_transfer())
-    /// it might be better to delay showing these events until the function has really
-    /// failed (returned false). It should be sufficient to report only the *last* error
-    /// in a messasge box then.
-    Error(String),
-
-    /// An action cannot be performed because the user is not in the group.
-    /// Reported eg. after a call to
-    /// dc_set_chat_name(), dc_set_chat_profile_image(),
-    /// dc_add_contact_to_chat(), dc_remove_contact_from_chat(),
-    /// dc_send_text_msg() or another sending function.
-    ErrorSelfNotInGroup(String),
-
-    /// Messages or chats changed.  One or more messages or chats changed for various
-    /// reasons in the database:
-    /// - Messages sent, received or removed
-    /// - Chats created, deleted or archived
-    /// - A draft has been set
-    ///
-    MsgsChanged {
-        /// Set if only a single chat is affected by the changes, otherwise 0.
-        chat_id: ChatId,
-
-        /// Set if only a single message is affected by the changes, otherwise 0.
-        msg_id: MsgId,
-    },
-
-    /// Reactions for the message changed.
-    ReactionsChanged {
-        /// ID of the chat which the message belongs to.
-        chat_id: ChatId,
-
-        /// ID of the message for which reactions were changed.
-        msg_id: MsgId,
-
-        /// ID of the contact whose reaction set is changed.
-        contact_id: ContactId,
-    },
-
-    /// There is a fresh message. Typically, the user will show an notification
-    /// when receiving this message.
-    ///
-    /// There is no extra #DC_EVENT_MSGS_CHANGED event send together with this event.
-    IncomingMsg {
-        /// ID of the chat where the message is assigned.
-        chat_id: ChatId,
-
-        /// ID of the message.
-        msg_id: MsgId,
-    },
-
-    /// Downloading a bunch of messages just finished.
-    IncomingMsgBunch {
-        /// List of incoming message IDs.
-        msg_ids: Vec<MsgId>,
-    },
-
-    /// Messages were seen or noticed.
-    /// chat id is always set.
-    MsgsNoticed(ChatId),
-
-    /// A single message is sent successfully. State changed from  DC_STATE_OUT_PENDING to
-    /// DC_STATE_OUT_DELIVERED, see dc_msg_get_state().
-    MsgDelivered {
-        /// ID of the chat which the message belongs to.
-        chat_id: ChatId,
-
-        /// ID of the message that was successfully sent.
-        msg_id: MsgId,
-    },
-
-    /// A single message could not be sent. State changed from DC_STATE_OUT_PENDING or DC_STATE_OUT_DELIVERED to
-    /// DC_STATE_OUT_FAILED, see dc_msg_get_state().
-    MsgFailed {
-        /// ID of the chat which the message belongs to.
-        chat_id: ChatId,
-
-        /// ID of the message that could not be sent.
-        msg_id: MsgId,
-    },
-
-    /// A single message is read by the receiver. State changed from DC_STATE_OUT_DELIVERED to
-    /// DC_STATE_OUT_MDN_RCVD, see dc_msg_get_state().
-    MsgRead {
-        /// ID of the chat which the message belongs to.
-        chat_id: ChatId,
-
-        /// ID of the message that was read.
-        msg_id: MsgId,
-    },
-
-    /// Chat changed.  The name or the image of a chat group was changed or members were added or removed.
-    /// Or the verify state of a chat has changed.
-    /// See dc_set_chat_name(), dc_set_chat_profile_image(), dc_add_contact_to_chat()
-    /// and dc_remove_contact_from_chat().
-    ///
-    /// This event does not include ephemeral timer modification, which
-    /// is a separate event.
-    ChatModified(ChatId),
-
-    /// Chat ephemeral timer changed.
-    ChatEphemeralTimerModified {
-        /// Chat ID.
-        chat_id: ChatId,
-
-        /// New ephemeral timer value.
-        timer: EphemeralTimer,
-    },
-
-    /// Contact(s) created, renamed, blocked or deleted.
-    ///
-    /// @param data1 (int) If set, this is the contact_id of an added contact that should be selected.
-    ContactsChanged(Option<ContactId>),
-
-    /// Location of one or more contact has changed.
-    ///
-    /// @param data1 (u32) contact_id of the contact for which the location has changed.
-    ///     If the locations of several contacts have been changed,
-    ///     eg. after calling dc_delete_all_locations(), this parameter is set to `None`.
-    LocationChanged(Option<ContactId>),
-
-    /// Inform about the configuration progress started by configure().
-    ConfigureProgress {
-        /// Progress.
-        ///
-        /// 0=error, 1-999=progress in permille, 1000=success and done
-        progress: usize,
-
-        /// Progress comment or error, something to display to the user.
-        comment: Option<String>,
-    },
-
-    /// Inform about the import/export progress started by imex().
-    ///
-    /// @param data1 (usize) 0=error, 1-999=progress in permille, 1000=success and done
-    /// @param data2 0
-    ImexProgress(usize),
-
-    /// A file has been exported. A file has been written by imex().
-    /// This event may be sent multiple times by a single call to imex().
-    ///
-    /// A typical purpose for a handler of this event may be to make the file public to some system
-    /// services.
-    ///
-    /// @param data2 0
-    ImexFileWritten(PathBuf),
-
-    /// Progress information of a secure-join handshake from the view of the inviter
-    /// (Alice, the person who shows the QR code).
-    ///
-    /// These events are typically sent after a joiner has scanned the QR code
-    /// generated by dc_get_securejoin_qr().
-    SecurejoinInviterProgress {
-        /// ID of the contact that wants to join.
-        contact_id: ContactId,
-
-        /// Progress as:
-        /// 300=vg-/vc-request received, typically shown as "bob@addr joins".
-        /// 600=vg-/vc-request-with-auth received, vg-member-added/vc-contact-confirm sent, typically shown as "bob@addr verified".
-        /// 800=contact added to chat, shown as "bob@addr securely joined GROUP". Only for the verified-group-protocol.
-        /// 1000=Protocol finished for this contact.
-        progress: usize,
-    },
-
-    /// Progress information of a secure-join handshake from the view of the joiner
-    /// (Bob, the person who scans the QR code).
-    /// The events are typically sent while dc_join_securejoin(), which
-    /// may take some time, is executed.
-    SecurejoinJoinerProgress {
-        /// ID of the inviting contact.
-        contact_id: ContactId,
-
-        /// Progress as:
-        /// 400=vg-/vc-request-with-auth sent, typically shown as "alice@addr verified, introducing myself."
-        /// (Bob has verified alice and waits until Alice does the same for him)
-        progress: usize,
-    },
-
-    /// The connectivity to the server changed.
-    /// This means that you should refresh the connectivity view
-    /// and possibly the connectivtiy HTML; see dc_get_connectivity() and
-    /// dc_get_connectivity_html() for details.
-    ConnectivityChanged,
-
-    /// The user's avatar changed.
-    SelfavatarChanged,
-
-    /// Webxdc status update received.
-    WebxdcStatusUpdate {
-        /// Message ID.
-        msg_id: MsgId,
-
-        /// Status update ID.
-        status_update_serial: StatusUpdateSerial,
-    },
-
-    /// Inform that a message containing a webxdc instance has been deleted.
-    WebxdcInstanceDeleted {
-        /// ID of the deleted message.
-        msg_id: MsgId,
-    },
-}

src/events/payload.rs

@@ -0,0 +1,258 @@
+//! # Event payloads.
+
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+use crate::chat::ChatId;
+use crate::contact::ContactId;
+use crate::ephemeral::Timer as EphemeralTimer;
+use crate::message::MsgId;
+use crate::webxdc::StatusUpdateSerial;
+
+/// Event payload.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+pub enum EventType {
+    /// The library-user may write an informational string to the log.
+    ///
+    /// This event should *not* be reported to the end-user using a popup or something like
+    /// that.
+    Info(String),
+
+    /// Emitted when SMTP connection is established and login was successful.
+    SmtpConnected(String),
+
+    /// Emitted when IMAP connection is established and login was successful.
+    ImapConnected(String),
+
+    /// Emitted when a message was successfully sent to the SMTP server.
+    SmtpMessageSent(String),
+
+    /// Emitted when an IMAP message has been marked as deleted
+    ImapMessageDeleted(String),
+
+    /// Emitted when an IMAP message has been moved
+    ImapMessageMoved(String),
+
+    /// Emitted before going into IDLE on the Inbox folder.
+    ImapInboxIdle,
+
+    /// Emitted when an new file in the $BLOBDIR was created
+    NewBlobFile(String),
+
+    /// Emitted when an file in the $BLOBDIR was deleted
+    DeletedBlobFile(String),
+
+    /// The library-user should write a warning string to the log.
+    ///
+    /// This event should *not* be reported to the end-user using a popup or something like
+    /// that.
+    Warning(String),
+
+    /// The library-user should report an error to the end-user.
+    ///
+    /// As most things are asynchronous, things may go wrong at any time and the user
+    /// should not be disturbed by a dialog or so.  Instead, use a bubble or so.
+    ///
+    /// However, for ongoing processes (eg. configure())
+    /// or for functions that are expected to fail (eg. dc_continue_key_transfer())
+    /// it might be better to delay showing these events until the function has really
+    /// failed (returned false). It should be sufficient to report only the *last* error
+    /// in a messasge box then.
+    Error(String),
+
+    /// An action cannot be performed because the user is not in the group.
+    /// Reported eg. after a call to
+    /// dc_set_chat_name(), dc_set_chat_profile_image(),
+    /// dc_add_contact_to_chat(), dc_remove_contact_from_chat(),
+    /// dc_send_text_msg() or another sending function.
+    ErrorSelfNotInGroup(String),
+
+    /// Messages or chats changed.  One or more messages or chats changed for various
+    /// reasons in the database:
+    /// - Messages sent, received or removed
+    /// - Chats created, deleted or archived
+    /// - A draft has been set
+    ///
+    MsgsChanged {
+        /// Set if only a single chat is affected by the changes, otherwise 0.
+        chat_id: ChatId,
+
+        /// Set if only a single message is affected by the changes, otherwise 0.
+        msg_id: MsgId,
+    },
+
+    /// Reactions for the message changed.
+    ReactionsChanged {
+        /// ID of the chat which the message belongs to.
+        chat_id: ChatId,
+
+        /// ID of the message for which reactions were changed.
+        msg_id: MsgId,
+
+        /// ID of the contact whose reaction set is changed.
+        contact_id: ContactId,
+    },
+
+    /// There is a fresh message. Typically, the user will show an notification
+    /// when receiving this message.
+    ///
+    /// There is no extra #DC_EVENT_MSGS_CHANGED event send together with this event.
+    IncomingMsg {
+        /// ID of the chat where the message is assigned.
+        chat_id: ChatId,
+
+        /// ID of the message.
+        msg_id: MsgId,
+    },
+
+    /// Downloading a bunch of messages just finished.
+    IncomingMsgBunch {
+        /// List of incoming message IDs.
+        msg_ids: Vec<MsgId>,
+    },
+
+    /// Messages were seen or noticed.
+    /// chat id is always set.
+    MsgsNoticed(ChatId),
+
+    /// A single message is sent successfully. State changed from  DC_STATE_OUT_PENDING to
+    /// DC_STATE_OUT_DELIVERED, see dc_msg_get_state().
+    MsgDelivered {
+        /// ID of the chat which the message belongs to.
+        chat_id: ChatId,
+
+        /// ID of the message that was successfully sent.
+        msg_id: MsgId,
+    },
+
+    /// A single message could not be sent. State changed from DC_STATE_OUT_PENDING or DC_STATE_OUT_DELIVERED to
+    /// DC_STATE_OUT_FAILED, see dc_msg_get_state().
+    MsgFailed {
+        /// ID of the chat which the message belongs to.
+        chat_id: ChatId,
+
+        /// ID of the message that could not be sent.
+        msg_id: MsgId,
+    },
+
+    /// A single message is read by the receiver. State changed from DC_STATE_OUT_DELIVERED to
+    /// DC_STATE_OUT_MDN_RCVD, see dc_msg_get_state().
+    MsgRead {
+        /// ID of the chat which the message belongs to.
+        chat_id: ChatId,
+
+        /// ID of the message that was read.
+        msg_id: MsgId,
+    },
+
+    /// Chat changed.  The name or the image of a chat group was changed or members were added or removed.
+    /// Or the verify state of a chat has changed.
+    /// See dc_set_chat_name(), dc_set_chat_profile_image(), dc_add_contact_to_chat()
+    /// and dc_remove_contact_from_chat().
+    ///
+    /// This event does not include ephemeral timer modification, which
+    /// is a separate event.
+    ChatModified(ChatId),
+
+    /// Chat ephemeral timer changed.
+    ChatEphemeralTimerModified {
+        /// Chat ID.
+        chat_id: ChatId,
+
+        /// New ephemeral timer value.
+        timer: EphemeralTimer,
+    },
+
+    /// Contact(s) created, renamed, blocked or deleted.
+    ///
+    /// @param data1 (int) If set, this is the contact_id of an added contact that should be selected.
+    ContactsChanged(Option<ContactId>),
+
+    /// Location of one or more contact has changed.
+    ///
+    /// @param data1 (u32) contact_id of the contact for which the location has changed.
+    ///     If the locations of several contacts have been changed,
+    ///     eg. after calling dc_delete_all_locations(), this parameter is set to `None`.
+    LocationChanged(Option<ContactId>),
+
+    /// Inform about the configuration progress started by configure().
+    ConfigureProgress {
+        /// Progress.
+        ///
+        /// 0=error, 1-999=progress in permille, 1000=success and done
+        progress: usize,
+
+        /// Progress comment or error, something to display to the user.
+        comment: Option<String>,
+    },
+
+    /// Inform about the import/export progress started by imex().
+    ///
+    /// @param data1 (usize) 0=error, 1-999=progress in permille, 1000=success and done
+    /// @param data2 0
+    ImexProgress(usize),
+
+    /// A file has been exported. A file has been written by imex().
+    /// This event may be sent multiple times by a single call to imex().
+    ///
+    /// A typical purpose for a handler of this event may be to make the file public to some system
+    /// services.
+    ///
+    /// @param data2 0
+    ImexFileWritten(PathBuf),
+
+    /// Progress information of a secure-join handshake from the view of the inviter
+    /// (Alice, the person who shows the QR code).
+    ///
+    /// These events are typically sent after a joiner has scanned the QR code
+    /// generated by dc_get_securejoin_qr().
+    SecurejoinInviterProgress {
+        /// ID of the contact that wants to join.
+        contact_id: ContactId,
+
+        /// Progress as:
+        /// 300=vg-/vc-request received, typically shown as "bob@addr joins".
+        /// 600=vg-/vc-request-with-auth received, vg-member-added/vc-contact-confirm sent, typically shown as "bob@addr verified".
+        /// 800=contact added to chat, shown as "bob@addr securely joined GROUP". Only for the verified-group-protocol.
+        /// 1000=Protocol finished for this contact.
+        progress: usize,
+    },
+
+    /// Progress information of a secure-join handshake from the view of the joiner
+    /// (Bob, the person who scans the QR code).
+    /// The events are typically sent while dc_join_securejoin(), which
+    /// may take some time, is executed.
+    SecurejoinJoinerProgress {
+        /// ID of the inviting contact.
+        contact_id: ContactId,
+
+        /// Progress as:
+        /// 400=vg-/vc-request-with-auth sent, typically shown as "alice@addr verified, introducing myself."
+        /// (Bob has verified alice and waits until Alice does the same for him)
+        progress: usize,
+    },
+
+    /// The connectivity to the server changed.
+    /// This means that you should refresh the connectivity view
+    /// and possibly the connectivtiy HTML; see dc_get_connectivity() and
+    /// dc_get_connectivity_html() for details.
+    ConnectivityChanged,
+
+    /// The user's avatar changed.
+    SelfavatarChanged,
+
+    /// Webxdc status update received.
+    WebxdcStatusUpdate {
+        /// Message ID.
+        msg_id: MsgId,
+
+        /// Status update ID.
+        status_update_serial: StatusUpdateSerial,
+    },
+
+    /// Inform that a message containing a webxdc instance has been deleted.
+    WebxdcInstanceDeleted {
+        /// ID of the deleted message.
+        msg_id: MsgId,
+    },
+}

src/html.rs

@@ -7,6 +7,7 @@
 //! `MsgId.get_html()` will return HTML -
 //! this allows nice quoting, handling linebreaks properly etc.
 
+
 use std::future::Future;
 use std::pin::Pin;
 

src/http.rs

@@ -1,24 +0,0 @@
-//! # HTTP module.
-
-use std::time::Duration;
-
-use anyhow::Result;
-
-use crate::socks::Socks5Config;
-
-const HTTP_TIMEOUT: Duration = Duration::from_secs(30);
-
-pub(crate) fn get_client(socks5_config: Option<Socks5Config>) -> Result<reqwest::Client> {
-    let builder = reqwest::ClientBuilder::new().timeout(HTTP_TIMEOUT);
-    let builder = if let Some(socks5_config) = socks5_config {
-        let proxy = reqwest::Proxy::all(socks5_config.to_url())?;
-        builder.proxy(proxy)
-    } else {
-        // Disable usage of "system" proxy configured via environment variables.
-        // It is enabled by default in `reqwest`, see
-        // <https://docs.rs/reqwest/0.11.14/reqwest/struct.ClientBuilder.html#method.no_proxy>
-        // for documentation.
-        builder.no_proxy()
-    };
-    Ok(builder.build()?)
-}

src/imap.rs

@@ -14,7 +14,7 @@ use std::{
 use anyhow::{bail, format_err, Context as _, Result};
 use async_channel::Receiver;
 use async_imap::types::{Fetch, Flag, Name, NameAttribute, UnsolicitedResponse};
-use futures::StreamExt;
+use futures::{StreamExt, TryStreamExt};
 use num_traits::FromPrimitive;
 
 use crate::chat::{self, ChatId, ChatIdBlocked};
@@ -475,7 +475,7 @@ impl Imap {
             // Note that the `Config::DeleteDeviceAfter` timer starts as soon as the messages are
             // fetched while the per-chat ephemeral timers start as soon as the messages are marked
             // as noticed.
-            context.interrupt_ephemeral_task().await;
+            context.scheduler.interrupt_ephemeral_task().await;
         }
 
         let session = self
@@ -516,8 +516,7 @@ impl Imap {
             .uid_fetch("1:*", RFC724MID_UID)
             .await
             .with_context(|| format!("can't resync folder {folder}"))?;
-        while let Some(fetch) = list.next().await {
-            let fetch = fetch?;
+        while let Some(fetch) = list.try_next().await? {
             let headers = match get_fetch_headers(&fetch) {
                 Ok(headers) => headers,
                 Err(err) => {
@@ -551,7 +550,7 @@ impl Imap {
         context
             .sql
             .transaction(move |transaction| {
-                transaction.execute("DELETE FROM imap WHERE folder=?", params![folder])?;
+                transaction.execute("DELETE FROM imap WHERE folder=?", (folder,))?;
                 for (uid, (rfc724_mid, target)) in &msgs {
                     // This may detect previously undetected moved
                     // messages, so we update server_folder too.
@@ -561,7 +560,7 @@ impl Imap {
                          ON CONFLICT(folder, uid, uidvalidity)
                          DO UPDATE SET rfc724_mid=excluded.rfc724_mid,
                                        target=excluded.target",
-                        params![rfc724_mid, folder, uid, uid_validity, target],
+                        (rfc724_mid, folder, uid, uid_validity, target),
                     )?;
                 }
                 Ok(())
@@ -660,7 +659,7 @@ impl Imap {
                     .context("Error fetching UID")?;
 
                 let mut new_last_seen_uid = None;
-                while let Some(fetch) = list.next().await.transpose()? {
+                while let Some(fetch) = list.try_next().await? {
                     if fetch.message == mailbox.exists && fetch.uid.is_some() {
                         new_last_seen_uid = fetch.uid;
                     }
@@ -677,7 +676,7 @@ impl Imap {
             .sql
             .execute(
                 "DELETE FROM imap WHERE folder=? AND uidvalidity!=?",
-                paramsv![folder, new_uid_validity],
+                (&folder, new_uid_validity),
             )
             .await?;
 
@@ -760,7 +759,7 @@ impl Imap {
                        ON CONFLICT(folder, uid, uidvalidity)
                        DO UPDATE SET rfc724_mid=excluded.rfc724_mid,
                                      target=excluded.target",
-                    paramsv![message_id, folder, uid, uid_validity, &target],
+                    (&message_id, &folder, uid, uid_validity, &target),
                 )
                 .await?;
 
@@ -1051,7 +1050,7 @@ impl Session {
         WHERE folder = ?
         AND target != folder
         ORDER BY target, uid",
-                paramsv![folder],
+                (folder,),
                 |row| {
                     let rowid: i64 = row.get(0)?;
                     let uid: u32 = row.get(1)?;
@@ -1198,8 +1197,11 @@ impl Imap {
             .await
             .context("failed to fetch flags")?;
 
-        while let Some(fetch) = list.next().await {
-            let fetch = fetch.context("failed to get FETCH result")?;
+        while let Some(fetch) = list
+            .try_next()
+            .await
+            .context("failed to get FETCH result")?
+        {
             let uid = if let Some(uid) = fetch.uid {
                 uid
             } else {
@@ -1258,8 +1260,7 @@ impl Imap {
                 .await
                 .context("IMAP Could not fetch")?;
 
-            while let Some(fetch) = list.next().await {
-                let msg = fetch?;
+            while let Some(msg) = list.try_next().await? {
                 match get_fetch_headers(&msg) {
                     Ok(headers) => {
                         if let Some(from) = mimeparser::get_from(&headers) {
@@ -1294,8 +1295,7 @@ impl Imap {
             .context("IMAP could not fetch")?;
 
         let mut msgs = BTreeMap::new();
-        while let Some(fetch) = list.next().await {
-            let msg = fetch?;
+        while let Some(msg) = list.try_next().await? {
             if let Some(msg_uid) = msg.uid {
                 // If the mailbox is not empty, results always include
                 // at least one UID, even if last_seen_uid+1 is past
@@ -1332,8 +1332,7 @@ impl Imap {
             .context("IMAP Could not fetch")?;
 
         let mut msgs = BTreeMap::new();
-        while let Some(fetch) = list.next().await {
-            let msg = fetch?;
+        while let Some(msg) = list.try_next().await? {
             if let Some(msg_uid) = msg.uid {
                 msgs.insert((msg.internal_date(), msg_uid), msg);
             }
@@ -1680,8 +1679,7 @@ impl Imap {
         let mut delimiter_is_default = true;
         let mut folder_configs = BTreeMap::new();
 
-        while let Some(folder) = folders.next().await {
-            let folder = folder?;
+        while let Some(folder) = folders.try_next().await? {
             info!(context, "Scanning folder: {:?}", folder);
 
             // Update the delimiter iff there is a different one, but only once.
@@ -1742,17 +1740,37 @@ impl Session {
     /// If this returns `true`, this means that new emails arrived and you should
     /// fetch again, even if you just fetched.
     fn server_sent_unsolicited_exists(&self, context: &Context) -> Result<bool> {
+        use async_imap::imap_proto::Response;
+        use async_imap::imap_proto::ResponseCode;
+        use UnsolicitedResponse::*;
+
         let mut unsolicited_exists = false;
         while let Ok(response) = self.unsolicited_responses.try_recv() {
             match response {
-                UnsolicitedResponse::Exists(_) => {
+                Exists(_) => {
                     info!(
                         context,
                         "Need to fetch again, got unsolicited EXISTS {:?}", response
                     );
                     unsolicited_exists = true;
                 }
-                _ => info!(context, "ignoring unsolicited response {:?}", response),
+
+                // We are not interested in the following responses and they are are
+                // sent quite frequently, so, we ignore them without logging them
+                Expunge(_) | Recent(_) => {}
+                Other(response_data)
+                    if matches!(
+                        response_data.parsed(),
+                        Response::Fetch { .. }
+                            | Response::Done {
+                                code: Some(ResponseCode::CopyUid(_, _, _)),
+                                ..
+                            }
+                    ) => {}
+
+                _ => {
+                    info!(context, "got unsolicited response {:?}", response)
+                }
             }
         }
         Ok(unsolicited_exists)
@@ -2170,7 +2188,7 @@ async fn mark_seen_by_uid(
                    AND uid=?3
                    LIMIT 1
                  )",
-            paramsv![&folder, uid_validity, uid],
+            (&folder, uid_validity, uid),
             |row| {
                 let msg_id: MsgId = row.get(0)?;
                 let chat_id: ChatId = row.get(1)?;
@@ -2186,12 +2204,12 @@ async fn mark_seen_by_uid(
                 "UPDATE msgs SET state=?1
                      WHERE (state=?2 OR state=?3)
                      AND id=?4",
-                paramsv![
+                (
                     MessageState::InSeen,
                     MessageState::InFresh,
                     MessageState::InNoticed,
-                    msg_id
-                ],
+                    msg_id,
+                ),
             )
             .await
             .with_context(|| format!("failed to update msg {msg_id} state"))?
@@ -2221,10 +2239,13 @@ pub(crate) async fn markseen_on_imap_table(context: &Context, message_id: &str)
         .execute(
             "INSERT OR IGNORE INTO imap_markseen (id)
              SELECT id FROM imap WHERE rfc724_mid=?",
-            paramsv![message_id],
+            (message_id,),
         )
         .await?;
-    context.interrupt_inbox(InterruptInfo::new(false)).await;
+    context
+        .scheduler
+        .interrupt_inbox(InterruptInfo::new(false))
+        .await;
 
     Ok(())
 }
@@ -2238,7 +2259,7 @@ pub(crate) async fn set_uid_next(context: &Context, folder: &str, uid_next: u32)
         .execute(
             "INSERT INTO imap_sync (folder, uid_next) VALUES (?,?)
                 ON CONFLICT(folder) DO UPDATE SET uid_next=excluded.uid_next",
-            paramsv![folder, uid_next],
+            (folder, uid_next),
         )
         .await?;
     Ok(())
@@ -2252,10 +2273,7 @@ pub(crate) async fn set_uid_next(context: &Context, folder: &str, uid_next: u32)
 async fn get_uid_next(context: &Context, folder: &str) -> Result<u32> {
     Ok(context
         .sql
-        .query_get_value(
-            "SELECT uid_next FROM imap_sync WHERE folder=?;",
-            paramsv![folder],
-        )
+        .query_get_value("SELECT uid_next FROM imap_sync WHERE folder=?;", (folder,))
         .await?
         .unwrap_or(0))
 }
@@ -2270,7 +2288,7 @@ pub(crate) async fn set_uidvalidity(
         .execute(
             "INSERT INTO imap_sync (folder, uidvalidity) VALUES (?,?)
                 ON CONFLICT(folder) DO UPDATE SET uidvalidity=excluded.uidvalidity",
-            paramsv![folder, uidvalidity],
+            (folder, uidvalidity),
         )
         .await?;
     Ok(())
@@ -2281,7 +2299,7 @@ async fn get_uidvalidity(context: &Context, folder: &str) -> Result<u32> {
         .sql
         .query_get_value(
             "SELECT uidvalidity FROM imap_sync WHERE folder=?;",
-            paramsv![folder],
+            (folder,),
         )
         .await?
         .unwrap_or(0))
@@ -2293,7 +2311,7 @@ pub(crate) async fn set_modseq(context: &Context, folder: &str, modseq: u64) ->
         .execute(
             "INSERT INTO imap_sync (folder, modseq) VALUES (?,?)
                 ON CONFLICT(folder) DO UPDATE SET modseq=excluded.modseq",
-            paramsv![folder, modseq],
+            (folder, modseq),
         )
         .await?;
     Ok(())
@@ -2302,10 +2320,7 @@ pub(crate) async fn set_modseq(context: &Context, folder: &str, modseq: u64) ->
 async fn get_modseq(context: &Context, folder: &str) -> Result<u64> {
     Ok(context
         .sql
-        .query_get_value(
-            "SELECT modseq FROM imap_sync WHERE folder=?;",
-            paramsv![folder],
-        )
+        .query_get_value("SELECT modseq FROM imap_sync WHERE folder=?;", (folder,))
         .await?
         .unwrap_or(0))
 }

src/imap/client.rs

@@ -6,7 +6,7 @@ use std::{
 use anyhow::{Context as _, Result};
 use async_imap::Client as ImapClient;
 use async_imap::Session as ImapSession;
-use tokio::io::BufStream;
+use tokio::io::BufWriter;
 
 use super::capabilities::Capabilities;
 use super::session::Session;
@@ -96,7 +96,7 @@ impl Client {
     ) -> Result<Self> {
         let tcp_stream = connect_tcp(context, hostname, port, IMAP_TIMEOUT, strict_tls).await?;
         let tls_stream = wrap_tls(strict_tls, hostname, tcp_stream).await?;
-        let buffered_stream = BufStream::new(tls_stream);
+        let buffered_stream = BufWriter::new(tls_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let mut client = ImapClient::new(session_stream);
 
@@ -110,7 +110,7 @@ impl Client {
 
     pub async fn connect_insecure(context: &Context, hostname: &str, port: u16) -> Result<Self> {
         let tcp_stream = connect_tcp(context, hostname, port, IMAP_TIMEOUT, false).await?;
-        let buffered_stream = BufStream::new(tcp_stream);
+        let buffered_stream = BufWriter::new(tcp_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let mut client = ImapClient::new(session_stream);
         let _greeting = client
@@ -145,7 +145,7 @@ impl Client {
             .await
             .context("STARTTLS upgrade failed")?;
 
-        let buffered_stream = BufStream::new(tls_stream);
+        let buffered_stream = BufWriter::new(tls_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let client = ImapClient::new(session_stream);
 
@@ -163,7 +163,7 @@ impl Client {
             .connect(context, domain, port, IMAP_TIMEOUT, strict_tls)
             .await?;
         let tls_stream = wrap_tls(strict_tls, domain, socks5_stream).await?;
-        let buffered_stream = BufStream::new(tls_stream);
+        let buffered_stream = BufWriter::new(tls_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let mut client = ImapClient::new(session_stream);
         let _greeting = client
@@ -183,7 +183,7 @@ impl Client {
         let socks5_stream = socks5_config
             .connect(context, domain, port, IMAP_TIMEOUT, false)
             .await?;
-        let buffered_stream = BufStream::new(socks5_stream);
+        let buffered_stream = BufWriter::new(socks5_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let mut client = ImapClient::new(session_stream);
         let _greeting = client
@@ -220,7 +220,7 @@ impl Client {
         let tls_stream = wrap_tls(strict_tls, hostname, socks5_stream)
             .await
             .context("STARTTLS upgrade failed")?;
-        let buffered_stream = BufStream::new(tls_stream);
+        let buffered_stream = BufWriter::new(tls_stream);
         let session_stream: Box<dyn SessionStream> = Box::new(buffered_stream);
         let client = ImapClient::new(session_stream);
 

src/imap/scan_folders.rs

@@ -70,7 +70,9 @@ impl Imap {
                 loop {
                     self.fetch_move_delete(context, folder.name(), folder_meaning)
                         .await
-                        .ok_or_log_msg(context, "Can't fetch new msgs in scanned folder");
+                        .context("Can't fetch new msgs in scanned folder")
+                        .log_err(context)
+                        .ok();
 
                     let session = self.session.as_mut().context("no session")?;
                     // If the server sent an unsocicited EXISTS during the fetch, we need to fetch again
@@ -105,7 +107,11 @@ impl Imap {
         let list = session
             .list(Some(""), Some("*"))
             .await?
-            .filter_map(|f| async { f.ok_or_log_msg(context, "list_folders() can't get folder") });
+            .filter_map(|f| async {
+                f.context("list_folders() can't get folder")
+                    .log_err(context)
+                    .ok()
+            });
         Ok(list.collect().await)
     }
 }

src/imex.rs

@@ -5,18 +5,19 @@ use std::ffi::OsStr;
 use std::path::{Path, PathBuf};
 
 use ::pgp::types::KeyTrait;
-use anyhow::{bail, ensure, format_err, Context as _, Error, Result};
+use anyhow::{bail, ensure, format_err, Context as _, Result};
 use futures::StreamExt;
 use futures_lite::FutureExt;
 use rand::{thread_rng, Rng};
 use tokio::fs::{self, File};
 use tokio_tar::Archive;
 
-use crate::blob::BlobObject;
+use crate::blob::{BlobDirContents, BlobObject};
 use crate::chat::{self, delete_and_reset_all_device_msgs, ChatId};
 use crate::config::Config;
 use crate::contact::ContactId;
 use crate::context::Context;
+use crate::e2ee;
 use crate::events::EventType;
 use crate::key::{self, DcKey, DcSecretKey, SignedPublicKey, SignedSecretKey};
 use crate::log::LogExt;
@@ -30,7 +31,10 @@ use crate::tools::{
     create_folder, delete_file, get_filesuffix_lc, open_file_std, read_file, time, write_file,
     EmailAddress,
 };
-use crate::{e2ee, tools};
+
+mod transfer;
+
+pub use transfer::{get_backup, BackupProvider};
 
 // Name of the database file in the backup.
 const DBFILE_BACKUP_NAME: &str = "dc_database_backup.sqlite";
@@ -86,13 +90,15 @@ pub async fn imex(
 ) -> Result<()> {
     let cancel = context.alloc_ongoing().await?;
 
-    let res = imex_inner(context, what, path, passphrase)
-        .race(async {
-            cancel.recv().await.ok();
-            Err(format_err!("canceled"))
-        })
-        .await;
-
+    let res = {
+        let _guard = context.scheduler.pause(context.clone()).await?;
+        imex_inner(context, what, path, passphrase)
+            .race(async {
+                cancel.recv().await.ok();
+                Err(format_err!("canceled"))
+            })
+            .await
+    };
     context.free_ongoing().await;
 
     if let Err(err) = res.as_ref() {
@@ -250,7 +256,7 @@ async fn maybe_add_bcc_self_device_msg(context: &Context) -> Result<()> {
         msg.text = Some(
             "It seems you are using multiple devices with Delta Chat. Great!\n\n\
              If you also want to synchronize outgoing messages across all devices, \
-             go to the settings and enable \"Send copy to self\"."
+             go to \"Settings → Advanced\" and enable \"Send Copy to Self\"."
                 .to_string(),
         );
         chat::add_device_msg(context, Some("bcc-self-hint"), Some(&mut msg)).await?;
@@ -391,8 +397,7 @@ async fn imex_inner(
             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(context, path, passphrase.unwrap_or_default()).await
         }
     }
 }
@@ -413,7 +418,7 @@ async fn import_backup(
         "Cannot import backups to accounts in use."
     );
     ensure!(
-        context.scheduler.read().await.is_none(),
+        !context.scheduler.is_running().await,
         "cannot import backup, IO is running"
     );
 
@@ -468,6 +473,7 @@ async fn import_backup(
         }
     }
 
+    context.sql.run_migrations(context).await?;
     delete_and_reset_all_device_msgs(context).await?;
 
     Ok(())
@@ -516,16 +522,9 @@ async fn export_backup(context: &Context, dir: &Path, passphrase: String) -> Res
     let _d1 = DeleteOnDrop(temp_db_path.clone());
     let _d2 = DeleteOnDrop(temp_path.clone());
 
-    context
-        .sql
-        .set_raw_config_int("backup_time", now as i32)
-        .await?;
-    sql::housekeeping(context).await.ok_or_log(context);
-
-    ensure!(
-        context.scheduler.read().await.is_none(),
-        "cannot export backup, IO is running"
-    );
+    export_database(context, &temp_db_path, passphrase)
+        .await
+        .context("could not export database")?;
 
     info!(
         context,
@@ -534,32 +533,6 @@ async fn export_backup(context: &Context, dir: &Path, passphrase: String) -> Res
         dest_path.display(),
     );
 
-    let path_str = temp_db_path
-        .to_str()
-        .with_context(|| format!("path {temp_db_path:?} is not valid unicode"))?;
-
-    context
-        .sql
-        .call_write(|conn| {
-            if let Err(err) = conn.execute("VACUUM", params![]) {
-                info!(context, "Vacuum failed, exporting anyway: {:#}.", err);
-            }
-            conn.execute(
-                "ATTACH DATABASE ? AS backup KEY ?",
-                paramsv![path_str, passphrase],
-            )
-            .context("failed to attach backup database")?;
-            let res = conn
-                .query_row("SELECT sqlcipher_export('backup')", [], |_row| Ok(()))
-                .context("failed to export to attached backup database");
-            conn.execute("DETACH DATABASE backup", [])
-                .context("failed to detach backup database")?;
-            res?;
-
-            Ok::<_, Error>(())
-        })
-        .await?;
-
     let res = export_backup_inner(context, &temp_db_path, &temp_path).await;
 
     match &res {
@@ -597,29 +570,15 @@ async fn export_backup_inner(
         .append_path_with_name(temp_db_path, DBFILE_BACKUP_NAME)
         .await?;
 
-    let read_dir = tools::read_dir(context.get_blobdir()).await?;
-    let count = read_dir.len();
-    let mut written_files = 0;
-
+    let blobdir = BlobDirContents::new(context).await?;
     let mut last_progress = 0;
-    for entry in read_dir {
-        let name = entry.file_name();
-        if !entry.file_type().await?.is_file() {
-            warn!(
-                context,
-                "Export: Found dir entry {} that is not a file, ignoring",
-                name.to_string_lossy()
-            );
-            continue;
-        }
-        let mut file = File::open(entry.path()).await?;
-        let path_in_archive = PathBuf::from(BLOBS_BACKUP_NAME).join(name);
-        builder.append_file(path_in_archive, &mut file).await?;
 
-        written_files += 1;
-        let progress = 1000 * written_files / count;
+    for (i, blob) in blobdir.iter().enumerate() {
+        let mut file = File::open(blob.to_abs_path()).await?;
+        let path_in_archive = PathBuf::from(BLOBS_BACKUP_NAME).join(blob.as_name());
+        builder.append_file(path_in_archive, &mut file).await?;
+        let progress = 1000 * i / blobdir.len();
         if progress != last_progress && progress > 10 && progress < 1000 {
-            // We already emitted ImexProgress(10) above
             context.emit_event(EventType::ImexProgress(progress));
             last_progress = progress;
         }
@@ -781,6 +740,45 @@ where
     Ok(())
 }
 
+/// Exports the database to *dest*, encrypted using *passphrase*.
+///
+/// The directory of *dest* must already exist, if *dest* itself exists it will be
+/// overwritten.
+///
+/// This also verifies that IO is not running during the export.
+async fn export_database(context: &Context, dest: &Path, passphrase: String) -> Result<()> {
+    ensure!(
+        !context.scheduler.is_running().await,
+        "cannot export backup, IO is running"
+    );
+    let now = time().try_into().context("32-bit UNIX time overflow")?;
+
+    // TODO: Maybe introduce camino crate for UTF-8 paths where we need them.
+    let dest = dest
+        .to_str()
+        .with_context(|| format!("path {} is not valid unicode", dest.display()))?;
+
+    context.sql.set_raw_config_int("backup_time", now).await?;
+    sql::housekeeping(context).await.log_err(context).ok();
+    context
+        .sql
+        .call_write(|conn| {
+            conn.execute("VACUUM;", ())
+                .map_err(|err| warn!(context, "Vacuum failed, exporting anyway {err}"))
+                .ok();
+            conn.execute("ATTACH DATABASE ? AS backup KEY ?", (dest, passphrase))
+                .context("failed to attach backup database")?;
+            let res = conn
+                .query_row("SELECT sqlcipher_export('backup')", [], |_row| Ok(()))
+                .context("failed to export to attached backup database");
+            conn.execute("DETACH DATABASE backup", [])
+                .context("failed to detach backup database")?;
+            res?;
+            Ok(())
+        })
+        .await
+}
+
 #[cfg(test)]
 mod tests {
     use std::time::Duration;

src/imex/transfer.rs

@@ -0,0 +1,695 @@
+//! Transfer a backup to an other device.
+//!
+//! This module provides support for using n0's iroh tool to initiate transfer of a backup
+//! to another device using a QR code.
+//!
+//! Using the iroh terminology there are two parties to this:
+//!
+//! - The *Provider*, which starts a server and listens for connections.
+//! - The *Getter*, which connects to the server and retrieves the data.
+//!
+//! Iroh is designed around the idea of verifying hashes, the downloads are verified as
+//! they are retrieved.  The entire transfer is initiated by requesting the data of a single
+//! root hash.
+//!
+//! Both the provider and the getter are authenticated:
+//!
+//! - The provider is known by its *peer ID*.
+//! - The provider needs an *authentication token* from the getter before it accepts a
+//!   connection.
+//!
+//! Both these are transferred in the QR code offered to the getter.  This ensures that the
+//! getter can not connect to an impersonated provider and the provider does not offer the
+//! download to an impersonated getter.
+
+use std::future::Future;
+use std::net::Ipv4Addr;
+use std::ops::Deref;
+use std::path::{Path, PathBuf};
+use std::pin::Pin;
+use std::task::Poll;
+
+use anyhow::{anyhow, bail, ensure, format_err, Context as _, Result};
+use async_channel::Receiver;
+use futures_lite::StreamExt;
+use iroh::blobs::Collection;
+use iroh::get::DataStream;
+use iroh::progress::ProgressEmitter;
+use iroh::protocol::AuthToken;
+use iroh::provider::{DataSource, Event, Provider, Ticket};
+use iroh::Hash;
+use tokio::fs::{self, File};
+use tokio::io::{self, AsyncWriteExt, BufWriter};
+use tokio::sync::broadcast::error::RecvError;
+use tokio::sync::{broadcast, Mutex};
+use tokio::task::{JoinHandle, JoinSet};
+use tokio_stream::wrappers::ReadDirStream;
+use tokio_util::sync::CancellationToken;
+
+use crate::blob::BlobDirContents;
+use crate::chat::{add_device_msg, delete_and_reset_all_device_msgs};
+use crate::context::Context;
+use crate::message::{Message, Viewtype};
+use crate::qr::{self, Qr};
+use crate::stock_str::backup_transfer_msg_body;
+use crate::{e2ee, EventType};
+
+use super::{export_database, DBFILE_BACKUP_NAME};
+
+const MAX_CONCURRENT_DIALS: u8 = 16;
+
+/// Provide or send a backup of this device.
+///
+/// This creates a backup of the current device and starts a service which offers another
+/// device to download this backup.
+///
+/// This does not make a full backup on disk, only the SQLite database is created on disk,
+/// the blobs in the blob directory are not copied.
+///
+/// This starts a task which acquires the global "ongoing" mutex.  If you need to stop the
+/// task use the [`Context::stop_ongoing`] mechanism.
+///
+/// The task implements [`Future`] and awaiting it will complete once a transfer has been
+/// either completed or aborted.
+#[derive(Debug)]
+pub struct BackupProvider {
+    /// The supervisor task, run by [`BackupProvider::watch_provider`].
+    handle: JoinHandle<Result<()>>,
+    /// The ticket to retrieve the backup collection.
+    ticket: Ticket,
+    /// Guard to cancel the provider on drop.
+    _drop_guard: tokio_util::sync::DropGuard,
+}
+
+impl BackupProvider {
+    /// Prepares for sending a backup to a second device.
+    ///
+    /// Before calling this function all I/O must be stopped so that no changes to the blobs
+    /// or database are happening, this is done by calling the [`Accounts::stop_io`] or
+    /// [`Context::stop_io`] APIs first.
+    ///
+    /// This will acquire the global "ongoing process" mutex, which can be used to cancel
+    /// the process.
+    ///
+    /// [`Accounts::stop_io`]: crate::accounts::Accounts::stop_io
+    pub async fn prepare(context: &Context) -> Result<Self> {
+        e2ee::ensure_secret_key_exists(context)
+            .await
+            .context("Private key not available, aborting backup export")?;
+
+        // Acquire global "ongoing" mutex.
+        let cancel_token = context.alloc_ongoing().await?;
+        let paused_guard = context.scheduler.pause(context.clone()).await?;
+        let context_dir = context
+            .get_blobdir()
+            .parent()
+            .ok_or_else(|| anyhow!("Context dir not found"))?;
+        let dbfile = context_dir.join(DBFILE_BACKUP_NAME);
+        if fs::metadata(&dbfile).await.is_ok() {
+            fs::remove_file(&dbfile).await?;
+            warn!(context, "Previous database export deleted");
+        }
+        let dbfile = TempPathGuard::new(dbfile);
+        let res = tokio::select! {
+            biased;
+            res = Self::prepare_inner(context, &dbfile) => {
+                match res {
+                    Ok(slf) => Ok(slf),
+                    Err(err) => {
+                        error!(context, "Failed to set up second device setup: {:#}", err);
+                        Err(err)
+                    },
+                }
+            },
+            _ = cancel_token.recv() => Err(format_err!("cancelled")),
+        };
+        let (provider, ticket) = match res {
+            Ok((provider, ticket)) => (provider, ticket),
+            Err(err) => {
+                context.free_ongoing().await;
+                return Err(err);
+            }
+        };
+        let drop_token = CancellationToken::new();
+        let handle = {
+            let context = context.clone();
+            let drop_token = drop_token.clone();
+            tokio::spawn(async move {
+                let res = Self::watch_provider(&context, provider, cancel_token, drop_token).await;
+                context.free_ongoing().await;
+
+                // Explicit drop to move the guards into this future
+                drop(paused_guard);
+                drop(dbfile);
+                res
+            })
+        };
+        Ok(Self {
+            handle,
+            ticket,
+            _drop_guard: drop_token.drop_guard(),
+        })
+    }
+
+    /// Creates the provider task.
+    ///
+    /// Having this as a function makes it easier to cancel it when needed.
+    async fn prepare_inner(context: &Context, dbfile: &Path) -> Result<(Provider, Ticket)> {
+        // Generate the token up front: we also use it to encrypt the database.
+        let token = AuthToken::generate();
+        context.emit_event(SendProgress::Started.into());
+        export_database(context, dbfile, token.to_string())
+            .await
+            .context("Database export failed")?;
+        context.emit_event(SendProgress::DatabaseExported.into());
+
+        // Now we can be sure IO is not running.
+        let mut files = vec![DataSource::with_name(
+            dbfile.to_owned(),
+            format!("db/{DBFILE_BACKUP_NAME}"),
+        )];
+        let blobdir = BlobDirContents::new(context).await?;
+        for blob in blobdir.iter() {
+            let path = blob.to_abs_path();
+            let name = format!("blob/{}", blob.as_file_name());
+            files.push(DataSource::with_name(path, name));
+        }
+
+        // Start listening.
+        let (db, hash) = iroh::provider::create_collection(files).await?;
+        context.emit_event(SendProgress::CollectionCreated.into());
+        let provider = Provider::builder(db)
+            .bind_addr((Ipv4Addr::UNSPECIFIED, 0).into())
+            .auth_token(token)
+            .spawn()?;
+        context.emit_event(SendProgress::ProviderListening.into());
+        info!(context, "Waiting for remote to connect");
+        let ticket = provider.ticket(hash)?;
+        Ok((provider, ticket))
+    }
+
+    /// Supervises the iroh [`Provider`], terminating it when needed.
+    ///
+    /// This will watch the provider and terminate it when:
+    ///
+    /// - A transfer is completed, successful or unsuccessful.
+    /// - An event could not be observed to protect against not knowing of a completed event.
+    /// - The ongoing process is cancelled.
+    ///
+    /// The *cancel_token* is the handle for the ongoing process mutex, when this completes
+    /// we must cancel this operation.
+    async fn watch_provider(
+        context: &Context,
+        mut provider: Provider,
+        cancel_token: Receiver<()>,
+        drop_token: CancellationToken,
+    ) -> Result<()> {
+        let mut events = provider.subscribe();
+        let mut total_size = 0;
+        let mut current_size = 0;
+        let res = loop {
+            tokio::select! {
+                biased;
+                res = &mut provider => {
+                    break res.context("BackupProvider failed");
+                },
+                maybe_event = events.recv() => {
+                    match maybe_event {
+                        Ok(event) => {
+                            match event {
+                                Event::ClientConnected { ..} => {
+                                    context.emit_event(SendProgress::ClientConnected.into());
+                                }
+                                Event::RequestReceived { .. } => {
+                                }
+                                Event::TransferCollectionStarted { total_blobs_size, .. } => {
+                                    total_size = total_blobs_size;
+                                    context.emit_event(SendProgress::TransferInProgress {
+                                        current_size,
+                                        total_size,
+                                    }.into());
+                                }
+                                Event::TransferBlobCompleted { size, .. } => {
+                                    current_size += size;
+                                    context.emit_event(SendProgress::TransferInProgress {
+                                        current_size,
+                                        total_size,
+                                    }.into());
+                                }
+                                Event::TransferCollectionCompleted { .. } => {
+                                    context.emit_event(SendProgress::TransferInProgress {
+                                        current_size: total_size,
+                                        total_size
+                                    }.into());
+                                    provider.shutdown();
+                                }
+                                Event::TransferAborted { .. } => {
+                                    provider.shutdown();
+                                    break Err(anyhow!("BackupProvider transfer aborted"));
+                                }
+                            }
+                        }
+                        Err(broadcast::error::RecvError::Closed) => {
+                            // We should never see this, provider.join() should complete
+                            // first.
+                        }
+                        Err(broadcast::error::RecvError::Lagged(_)) => {
+                            // We really shouldn't be lagging, if we did we may have missed
+                            // a completion event.
+                            provider.shutdown();
+                            break Err(anyhow!("Missed events from BackupProvider"));
+                        }
+                    }
+                },
+                _ = cancel_token.recv() => {
+                    provider.shutdown();
+                    break Err(anyhow!("BackupProvider cancelled"));
+                },
+                _ = drop_token.cancelled() => {
+                    provider.shutdown();
+                    break Err(anyhow!("BackupProvider dropped"));
+                }
+            }
+        };
+        match &res {
+            Ok(_) => {
+                context.emit_event(SendProgress::Completed.into());
+                let mut msg = Message::new(Viewtype::Text);
+                msg.text = Some(backup_transfer_msg_body(context).await);
+                add_device_msg(context, None, Some(&mut msg)).await?;
+            }
+            Err(err) => {
+                error!(context, "Backup transfer failure: {err:#}");
+                context.emit_event(SendProgress::Failed.into())
+            }
+        }
+        res
+    }
+
+    /// Returns a QR code that allows fetching this backup.
+    ///
+    /// This QR code can be passed to [`get_backup`] on a (different) device.
+    pub fn qr(&self) -> Qr {
+        Qr::Backup {
+            ticket: self.ticket.clone(),
+        }
+    }
+}
+
+impl Future for BackupProvider {
+    type Output = Result<()>;
+
+    fn poll(mut self: Pin<&mut Self>, cx: &mut std::task::Context<'_>) -> Poll<Self::Output> {
+        Pin::new(&mut self.handle).poll(cx)?
+    }
+}
+
+/// A guard which will remove the path when dropped.
+///
+/// It implements [`Deref`] it it can be used as a `&Path`.
+#[derive(Debug)]
+struct TempPathGuard {
+    path: PathBuf,
+}
+
+impl TempPathGuard {
+    fn new(path: PathBuf) -> Self {
+        Self { path }
+    }
+}
+
+impl Drop for TempPathGuard {
+    fn drop(&mut self) {
+        let path = self.path.clone();
+        tokio::spawn(async move {
+            fs::remove_file(&path).await.ok();
+        });
+    }
+}
+
+impl Deref for TempPathGuard {
+    type Target = Path;
+
+    fn deref(&self) -> &Self::Target {
+        &self.path
+    }
+}
+
+/// Create [`EventType::ImexProgress`] events using readable names.
+///
+/// Plus you get warnings if you don't use all variants.
+#[derive(Debug)]
+enum SendProgress {
+    Failed,
+    Started,
+    DatabaseExported,
+    CollectionCreated,
+    ProviderListening,
+    ClientConnected,
+    TransferInProgress { current_size: u64, total_size: u64 },
+    Completed,
+}
+
+impl From<SendProgress> for EventType {
+    fn from(source: SendProgress) -> Self {
+        use SendProgress::*;
+        let num: u16 = match source {
+            Failed => 0,
+            Started => 100,
+            DatabaseExported => 300,
+            CollectionCreated => 350,
+            ProviderListening => 400,
+            ClientConnected => 450,
+            TransferInProgress {
+                current_size,
+                total_size,
+            } => {
+                // the range is 450..=950
+                450 + ((current_size as f64 / total_size as f64) * 500.).floor() as u16
+            }
+            Completed => 1000,
+        };
+        Self::ImexProgress(num.into())
+    }
+}
+
+/// Contacts a backup provider and receives the backup from it.
+///
+/// This uses a QR code to contact another instance of deltachat which is providing a backup
+/// using the [`BackupProvider`].  Once connected it will authenticate using the secrets in
+/// the QR code and retrieve the backup.
+///
+/// This is a long running operation which will only when completed.
+///
+/// Using [`Qr`] as argument is a bit odd as it only accepts one specific variant of it.  It
+/// does avoid having [`iroh::provider::Ticket`] in the primary API however, without
+/// having to revert to untyped bytes.
+pub async fn get_backup(context: &Context, qr: Qr) -> Result<()> {
+    ensure!(
+        matches!(qr, Qr::Backup { .. }),
+        "QR code for backup must be of type DCBACKUP"
+    );
+    ensure!(
+        !context.is_configured().await?,
+        "Cannot import backups to accounts in use."
+    );
+    // Acquire global "ongoing" mutex.
+    let cancel_token = context.alloc_ongoing().await?;
+    let _guard = context.scheduler.pause(context.clone()).await;
+    info!(
+        context,
+        "Running get_backup for {}",
+        qr::format_backup(&qr)?
+    );
+    let res = tokio::select! {
+        biased;
+        res = get_backup_inner(context, qr) => res,
+        _ = cancel_token.recv() => Err(format_err!("cancelled")),
+    };
+    context.free_ongoing().await;
+    res
+}
+
+async fn get_backup_inner(context: &Context, qr: Qr) -> Result<()> {
+    let ticket = match qr {
+        Qr::Backup { ticket } => ticket,
+        _ => bail!("QR code for backup must be of type DCBACKUP"),
+    };
+
+    match transfer_from_provider(context, &ticket).await {
+        Ok(()) => {
+            context.sql.run_migrations(context).await?;
+            delete_and_reset_all_device_msgs(context).await?;
+            context.emit_event(ReceiveProgress::Completed.into());
+            Ok(())
+        }
+        Err(err) => {
+            // Clean up any blobs we already wrote.
+            let readdir = fs::read_dir(context.get_blobdir()).await?;
+            let mut readdir = ReadDirStream::new(readdir);
+            while let Some(dirent) = readdir.next().await {
+                if let Ok(dirent) = dirent {
+                    fs::remove_file(dirent.path()).await.ok();
+                }
+            }
+            context.emit_event(ReceiveProgress::Failed.into());
+            Err(err)
+        }
+    }
+}
+
+async fn transfer_from_provider(context: &Context, ticket: &Ticket) -> Result<()> {
+    let progress = ProgressEmitter::new(0, ReceiveProgress::max_blob_progress());
+    spawn_progress_proxy(context.clone(), progress.subscribe());
+    let on_connected = || {
+        context.emit_event(ReceiveProgress::Connected.into());
+        async { Ok(()) }
+    };
+    let on_collection = |collection: &Collection| {
+        context.emit_event(ReceiveProgress::CollectionReceived.into());
+        progress.set_total(collection.total_blobs_size());
+        async { Ok(()) }
+    };
+    let jobs = Mutex::new(JoinSet::default());
+    let on_blob =
+        |hash, reader, name| on_blob(context, &progress, &jobs, ticket, hash, reader, name);
+
+    // Perform the transfer.
+    let keylog = false; // Do not enable rustls SSLKEYLOGFILE env var functionality
+    let stats = iroh::get::run_ticket(
+        ticket,
+        keylog,
+        MAX_CONCURRENT_DIALS,
+        on_connected,
+        on_collection,
+        on_blob,
+    )
+    .await?;
+
+    let mut jobs = jobs.lock().await;
+    while let Some(job) = jobs.join_next().await {
+        job.context("job failed")?;
+    }
+    drop(progress);
+    info!(
+        context,
+        "Backup transfer finished, transfer rate was {} Mbps.",
+        stats.mbits()
+    );
+    Ok(())
+}
+
+/// Get callback when a blob is received from the provider.
+///
+/// This writes the blobs to the blobdir.  If the blob is the database it will import it to
+/// the database of the current [`Context`].
+async fn on_blob(
+    context: &Context,
+    progress: &ProgressEmitter,
+    jobs: &Mutex<JoinSet<()>>,
+    ticket: &Ticket,
+    _hash: Hash,
+    mut reader: DataStream,
+    name: String,
+) -> Result<DataStream> {
+    ensure!(!name.is_empty(), "Received a nameless blob");
+    let path = if name.starts_with("db/") {
+        let context_dir = context
+            .get_blobdir()
+            .parent()
+            .ok_or_else(|| anyhow!("Context dir not found"))?;
+        let dbfile = context_dir.join(DBFILE_BACKUP_NAME);
+        if fs::metadata(&dbfile).await.is_ok() {
+            fs::remove_file(&dbfile).await?;
+            warn!(context, "Previous database export deleted");
+        }
+        dbfile
+    } else {
+        ensure!(name.starts_with("blob/"), "malformatted blob name");
+        let blobname = name.rsplit('/').next().context("malformatted blob name")?;
+        context.get_blobdir().join(blobname)
+    };
+
+    let mut wrapped_reader = progress.wrap_async_read(&mut reader);
+    let file = File::create(&path).await?;
+    let mut file = BufWriter::with_capacity(128 * 1024, file);
+    io::copy(&mut wrapped_reader, &mut file).await?;
+    file.flush().await?;
+
+    if name.starts_with("db/") {
+        let context = context.clone();
+        let token = ticket.token().to_string();
+        jobs.lock().await.spawn(async move {
+            if let Err(err) = context.sql.import(&path, token).await {
+                error!(context, "cannot import database: {:#?}", err);
+            }
+            if let Err(err) = fs::remove_file(&path).await {
+                error!(
+                    context,
+                    "failed to delete database import file '{}': {:#?}",
+                    path.display(),
+                    err,
+                );
+            }
+        });
+    }
+    Ok(reader)
+}
+
+/// Spawns a task proxying progress events.
+///
+/// This spawns a tokio task which receives events from the [`ProgressEmitter`] and sends
+/// them to the context.  The task finishes when the emitter is dropped.
+///
+/// This could be done directly in the emitter by making it less generic.
+fn spawn_progress_proxy(context: Context, mut rx: broadcast::Receiver<u16>) {
+    tokio::spawn(async move {
+        loop {
+            match rx.recv().await {
+                Ok(step) => context.emit_event(ReceiveProgress::BlobProgress(step).into()),
+                Err(RecvError::Closed) => break,
+                Err(RecvError::Lagged(_)) => continue,
+            }
+        }
+    });
+}
+
+/// Create [`EventType::ImexProgress`] events using readable names.
+///
+/// Plus you get warnings if you don't use all variants.
+#[derive(Debug)]
+enum ReceiveProgress {
+    Connected,
+    CollectionReceived,
+    /// A value between 0 and 85 interpreted as a percentage.
+    ///
+    /// Other values are already used by the other variants of this enum.
+    BlobProgress(u16),
+    Completed,
+    Failed,
+}
+
+impl ReceiveProgress {
+    /// The maximum value for [`ReceiveProgress::BlobProgress`].
+    ///
+    /// This only exists to keep this magic value local in this type.
+    fn max_blob_progress() -> u16 {
+        85
+    }
+}
+
+impl From<ReceiveProgress> for EventType {
+    fn from(source: ReceiveProgress) -> Self {
+        let val = match source {
+            ReceiveProgress::Connected => 50,
+            ReceiveProgress::CollectionReceived => 100,
+            ReceiveProgress::BlobProgress(val) => 100 + 10 * val,
+            ReceiveProgress::Completed => 1000,
+            ReceiveProgress::Failed => 0,
+        };
+        EventType::ImexProgress(val.into())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use std::time::Duration;
+
+    use crate::chat::{get_chat_msgs, send_msg, ChatItem};
+    use crate::message::{Message, Viewtype};
+    use crate::test_utils::TestContextManager;
+
+    use super::*;
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn test_send_receive() {
+        let mut tcm = TestContextManager::new();
+
+        // Create first device.
+        let ctx0 = tcm.alice().await;
+
+        // Write a message in the self chat
+        let self_chat = ctx0.get_self_chat().await;
+        let mut msg = Message::new(Viewtype::Text);
+        msg.set_text(Some("hi there".to_string()));
+        send_msg(&ctx0, self_chat.id, &mut msg).await.unwrap();
+
+        // Send an attachment in the self chat
+        let file = ctx0.get_blobdir().join("hello.txt");
+        fs::write(&file, "i am attachment").await.unwrap();
+        let mut msg = Message::new(Viewtype::File);
+        msg.set_file(file.to_str().unwrap(), Some("text/plain"));
+        send_msg(&ctx0, self_chat.id, &mut msg).await.unwrap();
+
+        // Prepare to transfer backup.
+        let provider = BackupProvider::prepare(&ctx0).await.unwrap();
+
+        // Set up second device.
+        let ctx1 = tcm.unconfigured().await;
+        get_backup(&ctx1, provider.qr()).await.unwrap();
+
+        // Make sure the provider finishes without an error.
+        tokio::time::timeout(Duration::from_secs(30), provider)
+            .await
+            .expect("timed out")
+            .expect("error in provider");
+
+        // Check that we have the self message.
+        let self_chat = ctx1.get_self_chat().await;
+        let msgs = get_chat_msgs(&ctx1, self_chat.id).await.unwrap();
+        assert_eq!(msgs.len(), 2);
+        let msgid = match msgs.get(0).unwrap() {
+            ChatItem::Message { msg_id } => msg_id,
+            _ => panic!("wrong chat item"),
+        };
+        let msg = Message::load_from_db(&ctx1, *msgid).await.unwrap();
+        let text = msg.get_text().unwrap();
+        assert_eq!(text, "hi there");
+        let msgid = match msgs.get(1).unwrap() {
+            ChatItem::Message { msg_id } => msg_id,
+            _ => panic!("wrong chat item"),
+        };
+        let msg = Message::load_from_db(&ctx1, *msgid).await.unwrap();
+        let path = msg.get_file(&ctx1).unwrap();
+        let text = fs::read_to_string(&path).await.unwrap();
+        assert_eq!(text, "i am attachment");
+
+        // Check that both received the ImexProgress events.
+        ctx0.evtracker
+            .get_matching(|ev| matches!(ev, EventType::ImexProgress(1000)))
+            .await;
+        ctx1.evtracker
+            .get_matching(|ev| matches!(ev, EventType::ImexProgress(1000)))
+            .await;
+    }
+
+    #[test]
+    fn test_send_progress() {
+        let cases = [
+            ((0, 100), 450),
+            ((10, 100), 500),
+            ((50, 100), 700),
+            ((100, 100), 950),
+        ];
+
+        for ((current_size, total_size), progress) in cases {
+            let out = EventType::from(SendProgress::TransferInProgress {
+                current_size,
+                total_size,
+            });
+            assert_eq!(out, EventType::ImexProgress(progress));
+        }
+    }
+
+    #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+    async fn test_drop_provider() {
+        let mut tcm = TestContextManager::new();
+        let ctx = tcm.alice().await;
+
+        let provider = BackupProvider::prepare(&ctx).await.unwrap();
+        drop(provider);
+        ctx.evtracker
+            .get_matching(|ev| matches!(ev, EventType::ImexProgress(0)))
+            .await;
+    }
+}

src/job.rs

@@ -99,7 +99,7 @@ impl Job {
         if self.job_id != 0 {
             context
                 .sql
-                .execute("DELETE FROM jobs WHERE id=?;", paramsv![self.job_id as i32])
+                .execute("DELETE FROM jobs WHERE id=?;", (self.job_id as i32,))
                 .await?;
         }
 
@@ -117,22 +117,22 @@ impl Job {
                 .sql
                 .execute(
                     "UPDATE jobs SET desired_timestamp=?, tries=? WHERE id=?;",
-                    paramsv![
+                    (
                         self.desired_timestamp,
                         i64::from(self.tries),
                         self.job_id as i32,
-                    ],
+                    ),
                 )
                 .await?;
         } else {
             context.sql.execute(
                 "INSERT INTO jobs (added_timestamp, action, foreign_id, desired_timestamp) VALUES (?,?,?,?);",
-                paramsv![
+                (
                     self.added_timestamp,
                     self.action,
                     self.foreign_id,
                     self.desired_timestamp
-                ]
+                )
             ).await?;
         }
 
@@ -153,7 +153,7 @@ impl<'a> Connection<'a> {
 }
 
 pub(crate) async fn perform_job(context: &Context, mut connection: Connection<'_>, mut job: Job) {
-    info!(context, "job {} started...", &job);
+    info!(context, "Job {} started...", &job);
 
     let try_res = match perform_job_action(context, &mut job, &mut connection, 0).await {
         Status::RetryNow => perform_job_action(context, &mut job, &mut connection, 1).await,
@@ -165,7 +165,7 @@ pub(crate) async fn perform_job(context: &Context, mut connection: Connection<'_
             let tries = job.tries + 1;
 
             if tries < JOB_RETRIES {
-                info!(context, "increase job {} tries to {}", job, tries);
+                info!(context, "Increase job {job} tries to {tries}.");
                 job.tries = tries;
                 let time_offset = get_backoff_time_offset(tries);
                 job.desired_timestamp = time() + time_offset;
@@ -177,26 +177,23 @@ pub(crate) async fn perform_job(context: &Context, mut connection: Connection<'_
                     time_offset
                 );
                 job.save(context).await.unwrap_or_else(|err| {
-                    error!(context, "failed to save job: {:#}", err);
+                    error!(context, "Failed to save job: {err:#}.");
                 });
             } else {
                 info!(
                     context,
-                    "remove job {} as it exhausted {} retries", job, JOB_RETRIES
+                    "Remove job {job} as it exhausted {JOB_RETRIES} retries."
                 );
                 job.delete(context).await.unwrap_or_else(|err| {
-                    error!(context, "failed to delete job: {:#}", err);
+                    error!(context, "Failed to delete job: {err:#}.");
                 });
             }
         }
         Status::Finished(res) => {
             if let Err(err) = res {
-                warn!(
-                    context,
-                    "remove job {} as it failed with error {:#}", job, err
-                );
+                warn!(context, "Remove job {job} as it failed with error {err:#}.");
             } else {
-                info!(context, "remove job {} as it succeeded", job);
+                info!(context, "Remove job {job} as it succeeded.");
             }
 
             job.delete(context).await.unwrap_or_else(|err| {
@@ -212,13 +209,13 @@ async fn perform_job_action(
     connection: &mut Connection<'_>,
     tries: u32,
 ) -> Status {
-    info!(context, "begin immediate try {} of job {}", tries, job);
+    info!(context, "Begin immediate try {tries} of job {job}.");
 
     let try_res = match job.action {
         Action::DownloadMsg => job.download_msg(context, connection.inbox()).await,
     };
 
-    info!(context, "Finished immediate try {} of job {}", tries, job);
+    info!(context, "Finished immediate try {tries} of job {job}.");
 
     try_res
 }
@@ -238,6 +235,7 @@ fn get_backoff_time_offset(tries: u32) -> i64 {
 pub(crate) async fn schedule_resync(context: &Context) -> Result<()> {
     context.resync_request.store(true, Ordering::Relaxed);
     context
+        .scheduler
         .interrupt_inbox(InterruptInfo {
             probe_network: false,
         })
@@ -249,8 +247,11 @@ pub(crate) async fn schedule_resync(context: &Context) -> Result<()> {
 pub async fn add(context: &Context, job: Job) -> Result<()> {
     job.save(context).await.context("failed to save job")?;
 
-    info!(context, "interrupt: imap");
-    context.interrupt_inbox(InterruptInfo::new(false)).await;
+    info!(context, "Interrupt: IMAP.");
+    context
+        .scheduler
+        .interrupt_inbox(InterruptInfo::new(false))
+        .await;
     Ok(())
 }
 
@@ -260,7 +261,7 @@ pub async fn add(context: &Context, job: Job) -> Result<()> {
 /// jobs, this is tricky and probably wrong currently. Look at the
 /// SQL queries for details.
 pub(crate) async fn load_next(context: &Context, info: &InterruptInfo) -> Result<Option<Job>> {
-    info!(context, "loading job");
+    info!(context, "Loading job.");
 
     let query;
     let params;
@@ -276,7 +277,7 @@ WHERE desired_timestamp<=?
 ORDER BY action DESC, added_timestamp
 LIMIT 1;
 "#;
-        params = paramsv![t];
+        params = vec![t];
     } else {
         // processing after call to dc_maybe_network():
         // process _all_ pending jobs that failed before
@@ -288,13 +289,13 @@ WHERE tries>0
 ORDER BY desired_timestamp, action DESC
 LIMIT 1;
 "#;
-        params = paramsv![];
+        params = vec![];
     };
 
     loop {
         let job_res = context
             .sql
-            .query_row_optional(query, params.clone(), |row| {
+            .query_row_optional(query, rusqlite::params_from_iter(params.clone()), |row| {
                 let job = Job {
                     job_id: row.get("id")?,
                     action: row.get("action")?,
@@ -312,19 +313,21 @@ LIMIT 1;
             Ok(job) => return Ok(job),
             Err(err) => {
                 // Remove invalid job from the DB
-                info!(context, "cleaning up job, because of {:#}", err);
+                info!(context, "Cleaning up job, because of {err:#}.");
 
                 // TODO: improve by only doing a single query
                 let id = context
                     .sql
-                    .query_row(query, params.clone(), |row| row.get::<_, i32>(0))
+                    .query_row(query, rusqlite::params_from_iter(params.clone()), |row| {
+                        row.get::<_, i32>(0)
+                    })
                     .await
-                    .context("Failed to retrieve invalid job ID from the database")?;
+                    .context("failed to retrieve invalid job ID from the database")?;
                 context
                     .sql
-                    .execute("DELETE FROM jobs WHERE id=?;", paramsv![id])
+                    .execute("DELETE FROM jobs WHERE id=?;", (id,))
                     .await
-                    .with_context(|| format!("Failed to delete invalid job {id}"))?;
+                    .with_context(|| format!("failed to delete invalid job {id}"))?;
             }
         }
     }
@@ -343,7 +346,7 @@ mod tests {
                 "INSERT INTO jobs
                    (added_timestamp, action, foreign_id, desired_timestamp)
                  VALUES (?, ?, ?, ?);",
-                paramsv![
+                (
                     now,
                     if valid {
                         Action::DownloadMsg as i32
@@ -351,8 +354,8 @@ mod tests {
                         -1
                     },
                     foreign_id,
-                    now
-                ],
+                    now,
+                ),
             )
             .await
             .unwrap();