fix off-by-one error and fix wrong flag corrections

(experimental) special-case nauta provider to try make it work
2026-06-15 12:16:34 +03:00 · 2019-12-13 11:08:29 +01:00 · 2019-12-13 11:08:29 +01:00
36 changed files with 744 additions and 987 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,65 +1,5 @@
 # Changelog 

-## 1.0.0-beta.18
-
- #1056 avoid panicking when we couldn't read imap-server's greeting
-  message 
-
- #1055 avoid panicking when we don't have a selected folder
-
- #1052 #1049 #1051 improve logging to add thread-id/name and
-  file/lineno to each info/warn message.
-
- #1050 allow python bindings to initialize Account with "os_name".
-
-
-## 1.0.0-beta.17
-
- #1044 implement avatar recoding to 192x192 in core to keep file sizes small. 
-
- #1024 fix #1021 SQL/injection malformed Chat-Group-Name breakage
-
- #1036 fix smtp crash by pulling in a fixed async-smtp 
-
- #1039 fix read-receipts appearing as normal messages when you change
-  MDN settings 
-
- #1040 do not panic on SystemTimeDifference
-
- #1043 avoid potential crashes in malformed From/Chat-Disposition... headers  
-
- #1045 #1041 #1038 #1035 #1034 #1029 #1025 various cleanups and doc
-  improvments 
-
-## 1.0.0-beta.16
-
- alleviate login problems with providers which only
-  support RSA1024 keys by switching back from Rustls 
-  to native-tls, by using the new async-email/async-native-tls 
-  crate from @dignifiedquire. thanks @link2xt. 
-
- introduce per-contact profile images to send out 
-  own profile image heuristically, and fix sending
-  out of profile images in "in-prepare" groups. 
-  this also extends the Chat-spec that is maintained
-  in core to specify Chat-Group-Image and Chat-Group-Avatar
-  headers. thanks @r10s and @hpk42.
-
- fix merging of protected headers from the encrypted
-  to the unencrypted parts, now not happening recursively
-  anymore.  thanks @hpk and @r10s
-
- fix/optimize autocrypt gossip headers to only get 
-  sent when there are more than 2 people in a chat. 
-  thanks @link2xt
-
- fix displayname to use the authenticated name 
-  when available (displayname as coming from contacts 
-  themselves). thanks @simon-laux
-
- introduce preliminary support for offline autoconfig 
-  for nauta provider. thanks @hpk42 @r10s
-
 ## 1.0.0-beta.15

 - fix #994 attachment appeared doubled in chats (and where actually
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -50,6 +50,11 @@ dependencies = [
 "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "anyhow"
+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "arrayref"
 version = "0.3.5"
@@ -85,7 +90,7 @@ dependencies = [
 [[package]]
 name = "async-imap"
 version = "0.1.1"
-source = "git+https://github.com/async-email/async-imap?branch=dcc-stable#4f0852971c3f397c2b8a343ef1378992c02f61de"
+source = "git+https://github.com/async-email/async-imap?branch=native_tls#3dc3681a9b158504a0cf11656854db5096476e2f"
 dependencies = [
 "async-attributes 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "async-native-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -124,7 +129,7 @@ dependencies = [
 [[package]]
 name = "async-smtp"
 version = "0.1.0"
-source = "git+https://github.com/async-email/async-smtp#c26ce542e847c502654c471ebc50d6c996f86cee"
+source = "git+https://github.com/async-email/async-smtp#4f8416a0b8e0f8369459bb2fd342e79a17eb836b"
 dependencies = [
 "async-native-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -342,6 +347,11 @@ name = "bufstream"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
+name = "bumpalo"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "byte-tools"
 version = "0.3.1"
@@ -456,11 +466,6 @@ dependencies = [
 "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "color_quant"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "constant_time_eq"
 version = "0.1.4"
@@ -557,14 +562,6 @@ dependencies = [
 "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "crossbeam-queue"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-utils 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "crossbeam-utils"
 version = "0.6.6"
@@ -646,20 +643,11 @@ dependencies = [
 "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "deflate"
-version = "0.7.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "adler32 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "deltachat"
-version = "1.0.0-beta.18"
+version = "1.0.0-beta.15"
 dependencies = [
- "async-imap 0.1.1 (git+https://github.com/async-email/async-imap?branch=dcc-stable)",
+ "async-imap 0.1.1 (git+https://github.com/async-email/async-imap?branch=native_tls)",
 "async-native-tls 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "async-smtp 0.1.0 (git+https://github.com/async-email/async-smtp)",
 "async-std 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -677,12 +665,11 @@ dependencies = [
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- "lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)",
+ "lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)",
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@@ -734,9 +721,9 @@ dependencies = [

 [[package]]
 name = "deltachat_ffi"
-version = "1.0.0-beta.18"
+version = "1.0.0-beta.15"
 dependencies = [
- "deltachat 1.0.0-beta.18",
+ "deltachat 1.0.0-beta.15",
 "deltachat-provider-database 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "failure 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1205,15 +1192,6 @@ dependencies = [
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 ]

-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "lzw 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
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@@ -1387,22 +1365,6 @@ dependencies = [
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 ]

-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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- "tiff 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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@@ -1429,14 +1391,6 @@ dependencies = [
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 ]

-[[package]]
-name = "inflate"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "adler32 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -1459,12 +1413,11 @@ version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
-name = "jpeg-decoder"
-version = "0.1.18"
+name = "js-sys"
+version = "0.3.32"
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 dependencies = [
- "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1500,23 +1453,25 @@ dependencies = [
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 name = "lettre"
 version = "0.9.2"
-source = "git+https://github.com/deltachat/lettre?branch=native_tls#6453051a470e020a02228dc62f7aed2d9c90cf01"
+source = "git+https://github.com/deltachat/lettre?branch=feat/mail#00ba9db544059ddd60048f0b85d5052e4bf605da"
 dependencies = [
 "fast_chemail 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustls-connector 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
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 version = "0.9.2"
-source = "git+https://github.com/deltachat/lettre?branch=native_tls#6453051a470e020a02228dc62f7aed2d9c90cf01"
+source = "git+https://github.com/deltachat/lettre?branch=feat/mail#00ba9db544059ddd60048f0b85d5052e4bf605da"
 dependencies = [
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 "email 0.0.21 (git+https://github.com/deltachat/rust-email)",
- "lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)",
+ "lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)",
 "mime 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1580,11 +1535,6 @@ dependencies = [
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-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
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@@ -1778,16 +1728,6 @@ dependencies = [
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-[[package]]
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@@ -1817,16 +1757,6 @@ dependencies = [
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-[[package]]
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@@ -2053,17 +1983,6 @@ name = "pkg-config"
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 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
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-dependencies = [
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@@ -2364,28 +2283,6 @@ dependencies = [
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-[[package]]
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@@ -2486,6 +2383,20 @@ dependencies = [
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 ]

+[[package]]
+name = "ring"
+version = "0.16.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
+ "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "web-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2550,6 +2461,28 @@ dependencies = [
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 ]

+[[package]]
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+version = "0.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sct 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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+dependencies = [
+ "rustls 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2621,16 +2554,20 @@ dependencies = [
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-[[package]]
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-
 [[package]]
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -2799,6 +2736,11 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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@@ -2885,16 +2827,6 @@ dependencies = [
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-[[package]]
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-
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@@ -2996,17 +2928,6 @@ dependencies = [
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-[[package]]
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@@ -3238,6 +3159,11 @@ dependencies = [
 "traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "untrusted"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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@@ -3280,14 +3206,6 @@ dependencies = [
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-[[package]]
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 [[package]]
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@@ -3341,6 +3259,107 @@ name = "wasi"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
+name = "wasm-bindgen"
+version = "0.2.55"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasm-bindgen-macro 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
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@@ -3724,12 +3733,15 @@ dependencies = [
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@@ -3738,8 +3750,8 @@ dependencies = [
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@@ -3758,6 +3770,7 @@ dependencies = [
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@@ -3770,7 +3783,6 @@ dependencies = [
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-"checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
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@@ -3782,7 +3794,6 @@ dependencies = [
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-"checksum tiff 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d7b7c2cfc4742bd8a32f2e614339dd8ce30dbcf676bb262bd63a2327bc5df57d"
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 "checksum tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)" = "5a09c0b5bb588872ab2f09afa13ee6e9dac11e10a0ec9e8e3ba39a5a5d530af6"
 "checksum tokio-buf 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8fb220f46c53859a4b7ec083e41dec9778ff0b1851c0942b211edb89e0ccdc46"
@@ -3809,12 +3820,12 @@ dependencies = [
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 "checksum unsafe-any 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f30360d7979f5e9c6e6cea48af192ea8fab4afb3cf72597154b8f08935bc9c7f"
+"checksum untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "60369ef7a31de49bcb3f6ca728d4ba7300d9a1658f94c727d4cab8c8d9f4aece"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "75b414f6c464c879d7f9babf951f23bc3743fb7313c081b2e6ca719067ea9d61"
 "checksum utf8parse 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8772a4ccbb4e89959023bc5b7cb8623a795caa7092d99f3aa9501b9484d4557d"
 "checksum uuid 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e1436e58182935dcd9ce0add9ea0b558e8a87befe01c1a301e6020aeb0876363"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
-"checksum uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9fde2f6a4bea1d6e007c4ad38c6839fa71cbb63b6dbf5b595aa38dc9b1093c11"
 "checksum vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3fc439f2794e98976c88a2a2dafce96b930fe8010b0a256b3c2199a773933168"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum version_check 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
@@ -3823,6 +3834,16 @@ dependencies = [
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 "checksum want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
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+"checksum wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "29ae32af33bacd663a9a28241abecf01f2be64e6a185c6139b04f18b6385c5f2"
+"checksum wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "1845584bd3593442dc0de6e6d9f84454a59a057722f36f005e44665d6ab19d85"
+"checksum wasm-bindgen-macro 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "87fcc747e6b73c93d22c947a6334644d22cfec5abd8b66238484dc2b0aeb9fe4"
+"checksum wasm-bindgen-macro-support 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "3dc4b3f2c4078c8c4a5f363b92fcf62604c5913cbd16c6ff5aaf0f74ec03f570"
+"checksum wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "ca0b78d6d3be8589b95d1d49cdc0794728ca734adf36d7c9f07e6459508bb53d"
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+"checksum webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d7e664e770ac0110e2384769bcc59ed19e329d81f555916a6e072714957b81b4"
+"checksum webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "91cd5736df7f12a964a5067a12c62fa38e1bd8080aff1f80bc29be7c80d19ab4"
+"checksum weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3bb43f70885151e629e2a19ce9e50bd730fd436cfd4b666894c9ce4de9141164"
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 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat"
-version = "1.0.0-beta.18"
+version = "1.0.0-beta.15"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
 license = "MPL"
@@ -19,11 +19,8 @@ num-derive = "0.3.0"
 num-traits = "0.2.6"
 async-smtp = { git = "https://github.com/async-email/async-smtp", branch = "master" }
 email = { git = "https://github.com/deltachat/rust-email", branch = "master" }
-lettre_email = { git = "https://github.com/deltachat/lettre", branch = "native_tls" }
-
-# XXX newer commits of async-imap lead to import-export tests hanging
-async-imap = { git = "https://github.com/async-email/async-imap", branch = "dcc-stable" }
-
+lettre_email = { git = "https://github.com/deltachat/lettre", branch = "feat/mail" }
+async-imap = { git = "https://github.com/async-email/async-imap", branch="native_tls", default-features = false, features = ["tls_native"] }
 async-native-tls = "0.1.1"
 async-std = { version = "1.0", features = ["unstable"] }
 base64 = "0.11"
@@ -58,7 +55,6 @@ stop-token = { version = "0.1.1", features = ["unstable"] }
 mailparse = "0.10.1"
 encoded-words = { git = "https://github.com/async-email/encoded-words", branch="master" }
 native-tls = "0.2.3"
-image = "0.22.3"

 [dev-dependencies]
 tempfile = "3.0"
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.0.0-beta.18"
+version = "1.0.0-beta.15"
 description = "Deltachat FFI"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
--- a/python/src/deltachat/account.py
+++ b/python/src/deltachat/account.py
@@ -26,7 +26,7 @@ class Account(object):
    by the underlying deltachat core library.  All public Account methods are
    meant to be memory-safe and return memory-safe objects.
    """
-    def __init__(self, db_path, logid=None, eventlogging=True, os_name=None, debug=True):
+    def __init__(self, db_path, logid=None, eventlogging=True, debug=True):
        """ initialize account object.

        :param db_path: a path to the account database. The database
@@ -34,11 +34,10 @@ class Account(object):
        :param logid: an optional logging prefix that should be used with
                      the default internal logging.
        :param eventlogging: if False no eventlogging and no context callback will be configured
-        :param os_name: this will be put to the X-Mailer header in outgoing messages
        :param debug: turn on debug logging for events.
        """
        self._dc_context = ffi.gc(
-            lib.dc_context_new(lib.py_dc_callback, ffi.NULL, as_dc_charpointer(os_name)),
+            lib.dc_context_new(lib.py_dc_callback, ffi.NULL, ffi.NULL),
            _destroy_dc_context,
        )
        if eventlogging:
--- a/python/tests/data/d.png
+++ b/python/tests/data/d.png
--- a/python/tests/test_account.py
+++ b/python/tests/test_account.py
@@ -16,14 +16,6 @@ class TestOfflineAccountBasic:
        with pytest.raises(ValueError):
            Account(p.strpath)

-    def test_os_name(self, tmpdir):
-        p = tmpdir.join("hello.db")
-        # we can't easily test if os_name is used in X-Mailer
-        # outgoing messages without a full Online test
-        # but we at least check Account accepts the arg
-        ac1 = Account(p.strpath, os_name="solarpunk")
-        ac1.get_info()
-
    def test_getinfo(self, acfactory):
        ac1 = acfactory.get_unconfigured_account()
        d = ac1.get_info()
@@ -695,39 +687,6 @@ class TestOnlineAccount:
        except queue.Empty:
            pass  # mark_seen_messages() has generated events before it returns

-    def test_mdn_asymetric(self, acfactory, lp):
-        ac1, ac2 = acfactory.get_two_online_accounts()
-
-        lp.sec("ac1: create chat with ac2")
-        chat = self.get_chat(ac1, ac2, both_created=True)
-
-        # make sure mdns are enabled (usually enabled by default already)
-        ac1.set_config("mdns_enabled", "1")
-        ac2.set_config("mdns_enabled", "1")
-
-        lp.sec("sending text message from ac1 to ac2")
-        msg_out = chat.send_text("message1")
-
-        assert len(chat.get_messages()) == 1
-
-        lp.sec("disable ac1 MDNs")
-        ac1.set_config("mdns_enabled", "0")
-
-        lp.sec("wait for ac2 to receive message")
-        msg = ac2.wait_next_incoming_message()
-
-        assert len(msg.chat.get_messages()) == 1
-
-        lp.sec("ac2: mark incoming message as seen")
-        ac2.mark_seen_messages([msg])
-
-        lp.sec("ac1: waiting for incoming activity")
-        # wait for MOVED event because even ignored read-receipts should be moved
-        ac1._evlogger.get_matching("DC_EVENT_IMAP_MESSAGE_MOVED")
-
-        assert len(chat.get_messages()) == 1
-        assert not msg_out.is_out_mdn_received()
-
    def test_send_and_receive_will_encrypt_decrypt(self, acfactory, lp):
        ac1, ac2 = acfactory.get_two_online_accounts()

@@ -756,12 +715,6 @@ class TestOnlineAccount:
        assert msg_back.text == "message-back"
        assert msg_back.is_encrypted()

-        # Test that we do not gossip peer keys in 1-to-1 chat,
-        # as it makes no sense to gossip to peers their own keys.
-        # Gossip is only sent in encrypted messages,
-        # and we sent encrypted msg_back right above.
-        assert chat2b.get_summary()["gossiped_timestamp"] == 0
-
        lp.sec("create group chat with two members, one of which has no encrypt state")
        chat = ac1.create_group_chat("encryption test")
        chat.add_contact(ac1.create_contact(ac2.get_config("addr")))
--- a/set_core_version.py
+++ b/set_core_version.py
@@ -55,7 +55,6 @@ if __name__ == "__main__":
    replace_toml_version("Cargo.toml", newversion)
    replace_toml_version("deltachat-ffi/Cargo.toml", newversion)

-    subprocess.call(["cargo", "check"])
    subprocess.call(["git", "add", "-u"])
    # subprocess.call(["cargo", "update", "-p", "deltachat"])

--- a/src/blob.rs
+++ b/src/blob.rs
@@ -6,13 +6,9 @@ use std::fs;
 use std::io::Write;
 use std::path::{Path, PathBuf};

-use self::image::GenericImageView;
-use crate::constants::AVATAR_SIZE;
 use crate::context::Context;
 use crate::events::Event;

-extern crate image;
-
 /// Represents a file in the blob directory.
 ///
 /// The object has a name, which will always be valid UTF-8.  Having a
@@ -353,31 +349,6 @@ impl<'a> BlobObject<'a> {
        }
        true
    }
-
-    pub fn recode_to_avatar_size(&self, context: &Context) -> Result<(), BlobError> {
-        let blob_abs = self.to_abs_path();
-        let img = image::open(&blob_abs).map_err(|err| BlobError::RecodeFailure {
-            blobdir: context.get_blobdir().to_path_buf(),
-            blobname: blob_abs.to_str().unwrap_or_default().to_string(),
-            cause: err,
-            backtrace: failure::Backtrace::new(),
-        })?;
-
-        if img.width() <= AVATAR_SIZE && img.height() <= AVATAR_SIZE {
-            return Ok(());
-        }
-
-        let img = img.thumbnail(AVATAR_SIZE, AVATAR_SIZE);
-
-        img.save(&blob_abs).map_err(|err| BlobError::WriteFailure {
-            blobdir: context.get_blobdir().to_path_buf(),
-            blobname: blob_abs.to_str().unwrap_or_default().to_string(),
-            cause: err,
-            backtrace: failure::Backtrace::new(),
-        })?;
-
-        Ok(())
-    }
 }

 impl<'a> fmt::Display for BlobObject<'a> {
@@ -411,13 +382,6 @@ pub enum BlobError {
        cause: std::io::Error,
        backtrace: failure::Backtrace,
    },
-    RecodeFailure {
-        blobdir: PathBuf,
-        blobname: String,
-        #[cause]
-        cause: image::ImageError,
-        backtrace: failure::Backtrace,
-    },
    WrongBlobdir {
        blobdir: PathBuf,
        src: PathBuf,
@@ -465,9 +429,6 @@ impl fmt::Display for BlobError {
                blobname,
                blobdir.display(),
            ),
-            BlobError::RecodeFailure {
-                blobdir, blobname, ..
-            } => write!(f, "Failed to recode {} in {}", blobname, blobdir.display(),),
            BlobError::WrongBlobdir { blobdir, src, .. } => write!(
                f,
                "File path {} is not in blobdir {}",
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -35,6 +35,7 @@ pub struct Chat {
    pub grpid: String,
    blocked: Blocked,
    pub param: Params,
+    pub gossiped_timestamp: i64,
    is_sending_locations: bool,
 }

@@ -43,7 +44,7 @@ impl Chat {
    pub fn load_from_db(context: &Context, chat_id: u32) -> Result<Self, Error> {
        let res = context.sql.query_row(
            "SELECT c.id,c.type,c.name, c.grpid,c.param,c.archived, \
-             c.blocked, c.locations_send_until  \
+             c.blocked, c.gossiped_timestamp, c.locations_send_until  \
             FROM chats c WHERE c.id=?;",
            params![chat_id as i32],
            |row| {
@@ -55,7 +56,8 @@ impl Chat {
                    param: row.get::<_, String>(4)?.parse().unwrap_or_default(),
                    archived: row.get(5)?,
                    blocked: row.get::<_, Option<_>>(6)?.unwrap_or_default(),
-                    is_sending_locations: row.get(7)?,
+                    gossiped_timestamp: row.get(7)?,
+                    is_sending_locations: row.get(8)?,
                };

                Ok(c)
@@ -116,12 +118,10 @@ impl Chat {
        self.param.exists(Param::Selftalk)
    }

-    /// Returns true if chat is a device chat.
    pub fn is_device_talk(&self) -> bool {
        self.param.exists(Param::Devicetalk)
    }

-    /// Returns true if user can send messages to this chat.
    pub fn can_send(&self) -> bool {
        self.id > DC_CHAT_ID_LAST_SPECIAL && !self.is_device_talk()
    }
@@ -136,17 +136,14 @@ impl Chat {
        Ok(())
    }

-    /// Returns chat ID.
    pub fn get_id(&self) -> u32 {
        self.id
    }

-    /// Returns chat type.
    pub fn get_type(&self) -> Chattype {
        self.typ
    }

-    /// Returns chat name.
    pub fn get_name(&self) -> &str {
        &self.name
    }
@@ -172,7 +169,7 @@ impl Chat {
        }

        if self.typ == Chattype::Group || self.typ == Chattype::VerifiedGroup {
-            if self.id == DC_CHAT_ID_DEADDROP {
+            if self.id == 1 {
                return context.stock_str(StockMessage::DeadDrop).into();
            }
            let cnt = get_chat_contact_cnt(context, self.id);
@@ -219,10 +216,6 @@ impl Chat {
        None
    }

-    pub fn get_gossiped_timestamp(&self, context: &Context) -> i64 {
-        get_gossiped_timestamp(context, self.id)
-    }
-
    pub fn get_color(&self, context: &Context) -> u32 {
        let mut color = 0;

@@ -253,12 +246,10 @@ impl Chat {
        !self.is_unpromoted()
    }

-    /// Returns true if chat is a verified group chat.
    pub fn is_verified(&self) -> bool {
-        self.typ == Chattype::VerifiedGroup
+        (self.typ == Chattype::VerifiedGroup)
    }

-    /// Returns true if location streaming is enabled in the chat.
    pub fn is_sending_locations(&self) -> bool {
        self.is_sending_locations
    }
@@ -653,8 +644,8 @@ pub fn create_or_lookup_by_contact_id(
    sql::execute(
        context,
        &context.sql,
-        "INSERT INTO chats (type, name, param, blocked, grpid, created_timestamp) VALUES(?, ?, ?, ?, ?, ?)",
-        params![
+        format!(
+            "INSERT INTO chats (type, name, param, blocked, grpid, created_timestamp) VALUES({}, '{}', '{}', {}, '{}', {})",
            100,
            chat_name,
            match contact_id {
@@ -665,7 +656,8 @@ pub fn create_or_lookup_by_contact_id(
            create_blocked as u8,
            contact.get_addr(),
            time(),
-        ]
+        ),
+        params![],
    )?;

    let chat_id = sql::get_rowid(context, &context.sql, "chats", "grpid", contact.get_addr());
@@ -673,8 +665,11 @@ pub fn create_or_lookup_by_contact_id(
    sql::execute(
        context,
        &context.sql,
-        "INSERT INTO chats_contacts (chat_id, contact_id) VALUES(?, ?)",
-        params![chat_id, contact_id],
+        format!(
+            "INSERT INTO chats_contacts (chat_id, contact_id) VALUES({}, {})",
+            chat_id, contact_id
+        ),
+        params![],
    )?;

    if contact_id == DC_CONTACT_ID_SELF {
@@ -821,7 +816,6 @@ fn last_msg_in_chat_encrypted(context: &Context, sql: &Sql, chat_id: u32) -> boo
    }
 }

-/// Returns whether a contact is in a chat or not.
 pub fn is_contact_in_chat(context: &Context, chat_id: u32, contact_id: u32) -> bool {
    /* this function works for group and for normal chats, however, it is more useful for group chats.
    DC_CONTACT_ID_SELF may be used to check, if the user itself is in a group chat (DC_CONTACT_ID_SELF is not added to normal chats) */
@@ -1112,7 +1106,6 @@ pub fn get_chat_msgs(
    }
 }

-/// Returns number of messages in a chat.
 pub fn get_msg_cnt(context: &Context, chat_id: u32) -> usize {
    context
        .sql
@@ -1283,7 +1276,6 @@ pub fn get_next_media(
    ret
 }

-/// Archives or unarchives a chat.
 pub fn archive(context: &Context, chat_id: u32, archive: bool) -> Result<(), Error> {
    ensure!(
        chat_id > DC_CHAT_ID_LAST_SPECIAL,
@@ -1319,7 +1311,6 @@ pub fn archive(context: &Context, chat_id: u32, archive: bool) -> Result<(), Err
    Ok(())
 }

-/// Deletes a chat.
 pub fn delete(context: &Context, chat_id: u32) -> Result<(), Error> {
    ensure!(
        chat_id > DC_CHAT_ID_LAST_SPECIAL,
@@ -1450,7 +1441,6 @@ pub fn add_to_chat_contacts_table(context: &Context, chat_id: u32, contact_id: u
    .is_ok()
 }

-/// Adds a contact to the chat.
 pub fn add_contact_to_chat(context: &Context, chat_id: u32, contact_id: u32) -> bool {
    match add_contact_to_chat_ex(context, chat_id, contact_id, false) {
        Ok(res) => res,
@@ -1475,7 +1465,7 @@ pub(crate) fn add_contact_to_chat_ex(
    let contact = Contact::get_by_id(context, contact_id)?;
    let mut msg = Message::default();

-    reset_gossiped_timestamp(context, chat_id)?;
+    reset_gossiped_timestamp(context, chat_id);

    /*this also makes sure, not contacts are added to special or normal chats*/
    let mut chat = Chat::load_from_db(context, chat_id)?;
@@ -1573,28 +1563,12 @@ fn real_group_exists(context: &Context, chat_id: u32) -> bool {
        .unwrap_or_default()
 }

-pub fn reset_gossiped_timestamp(context: &Context, chat_id: u32) -> crate::sql::Result<()> {
-    set_gossiped_timestamp(context, chat_id, 0)
+pub fn reset_gossiped_timestamp(context: &Context, chat_id: u32) {
+    set_gossiped_timestamp(context, chat_id, 0);
 }

-/// Get timestamp of the last gossip sent in the chat.
-/// Zero return value means that gossip was never sent.
-pub fn get_gossiped_timestamp(context: &Context, chat_id: u32) -> i64 {
-    context
-        .sql
-        .query_get_value::<_, i64>(
-            context,
-            "SELECT gossiped_timestamp FROM chats WHERE id=?;",
-            params![chat_id as i32],
-        )
-        .unwrap_or_default()
-}
-
-pub fn set_gossiped_timestamp(
-    context: &Context,
-    chat_id: u32,
-    timestamp: i64,
-) -> crate::sql::Result<()> {
+// Should return Result
+pub fn set_gossiped_timestamp(context: &Context, chat_id: u32, timestamp: i64) {
    if 0 != chat_id {
        info!(
            context,
@@ -1607,6 +1581,7 @@ pub fn set_gossiped_timestamp(
            "UPDATE chats SET gossiped_timestamp=? WHERE id=?;",
            params![timestamp, chat_id as i32],
        )
+        .ok();
    } else {
        info!(
            context,
@@ -1618,6 +1593,7 @@ pub fn set_gossiped_timestamp(
            "UPDATE chats SET gossiped_timestamp=?;",
            params![timestamp],
        )
+        .ok();
    }
 }

@@ -1883,7 +1859,6 @@ pub fn set_chat_profile_image(
                _ => Err(err),
            },
        )?;
-        image_blob.recode_to_avatar_size(context)?;
        chat.param.set(Param::ProfileImage, image_blob.as_name());
        msg.param.set(Param::Arg, image_blob.as_name());
        msg.text = Some(context.stock_system_msg(
@@ -2027,7 +2002,7 @@ pub fn get_info_json(context: &Context, chat_id: u32) -> Result<String, Error> {
         "name": chat.name,
         "archived": chat.archived,
         "param": chat.param.to_string(),
-         "gossiped_timestamp": chat.get_gossiped_timestamp(context),
+         "gossiped_timestamp": chat.gossiped_timestamp,
         "is_sending_locations": chat.is_sending_locations,
         "color": chat.get_color(context),
         "profile_image": profile_image,
@@ -2082,9 +2057,6 @@ pub fn get_chat_id_by_grpid(context: &Context, grpid: impl AsRef<str>) -> (u32,
        .unwrap_or((0, false, Blocked::Not))
 }

-/// Adds a message to device chat.
-///
-/// Optional `label` can be provided to ensure that message is added only once.
 pub fn add_device_msg(
    context: &Context,
    label: Option<&str>,
@@ -2159,9 +2131,6 @@ pub fn was_device_msg_ever_added(context: &Context, label: &str) -> Result<bool,
    Ok(false)
 }

-/// Adds an informational message to chat.
-///
-/// For example, it can be a message showing that a member was added to a group.
 pub fn add_info_msg(context: &Context, chat_id: u32, text: impl AsRef<str>) {
    let rfc724_mid = dc_create_outgoing_rfc724_mid(None, "@device");

--- a/src/chatlist.rs
+++ b/src/chatlist.rs
@@ -314,7 +314,7 @@ impl Chatlist {
    }
 }

-/// Returns the number of archived chats
+/// Get the number of archived chats
 pub fn dc_get_archived_cnt(context: &Context) -> u32 {
    context
        .sql
--- a/src/config.rs
+++ b/src/config.rs
@@ -136,7 +136,6 @@ impl Context {
                match value {
                    Some(value) => {
                        let blob = BlobObject::new_from_path(&self, value)?;
-                        blob.recode_to_avatar_size(self)?;
                        self.sql.set_raw_config(self, key, Some(blob.as_name()))
                    }
                    None => self.sql.set_raw_config(self, key, None),
@@ -191,8 +190,6 @@ mod tests {
    use std::string::ToString;

    use crate::test_utils::*;
-    use std::fs::File;
-    use std::io::Write;

    #[test]
    fn test_to_string() {
@@ -212,17 +209,16 @@ mod tests {
    }

    #[test]
-    fn test_selfavatar_outside_blobdir() -> failure::Fallible<()> {
+    fn test_selfavatar() -> failure::Fallible<()> {
        let t = dummy_context();
        let avatar_src = t.dir.path().join("avatar.jpg");
-        let avatar_bytes = include_bytes!("../test-data/image/avatar1000x1000.jpg");
-        File::create(&avatar_src)?.write_all(avatar_bytes)?;
+        std::fs::write(&avatar_src, b"avatar")?;
        let avatar_blob = t.ctx.get_blobdir().join("avatar.jpg");
        assert!(!avatar_blob.exists());
        t.ctx
            .set_config(Config::Selfavatar, Some(&avatar_src.to_str().unwrap()))?;
        assert!(avatar_blob.exists());
-        assert!(std::fs::metadata(&avatar_blob).unwrap().len() < avatar_bytes.len() as u64);
+        assert_eq!(std::fs::read(&avatar_blob)?, b"avatar");
        let avatar_cfg = t.ctx.get_config(Config::Selfavatar);
        assert_eq!(avatar_cfg, avatar_blob.to_str().map(|s| s.to_string()));
        Ok(())
@@ -232,8 +228,7 @@ mod tests {
    fn test_selfavatar_in_blobdir() -> failure::Fallible<()> {
        let t = dummy_context();
        let avatar_src = t.ctx.get_blobdir().join("avatar.jpg");
-        let avatar_bytes = include_bytes!("../test-data/image/avatar1000x1000.jpg");
-        File::create(&avatar_src)?.write_all(avatar_bytes)?;
+        std::fs::write(&avatar_src, b"avatar")?;
        t.ctx
            .set_config(Config::Selfavatar, Some(&avatar_src.to_str().unwrap()))?;
        let avatar_cfg = t.ctx.get_config(Config::Selfavatar);
--- a/src/configure/mod.rs
+++ b/src/configure/mod.rs
@@ -6,8 +6,6 @@ mod read_url;

 use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};

-use async_std::task;
-
 use crate::config::Config;
 use crate::constants::*;
 use crate::context::Context;
@@ -94,11 +92,9 @@ pub fn JobConfigureImap(context: &Context) {
    let mut param_domain = "undefined.undefined".to_owned();
    let mut param_addr_urlencoded: String =
        "Internal Error: this value should never be used".to_owned();
-    let mut keep_flags = 0;
-
-    const STEP_12_USE_AUTOCONFIG: u8 = 12;
-    const STEP_13_AFTER_AUTOCONFIG: u8 = 13;
+    let mut keep_flags = std::i32::MAX;

+    const STEP_3_INDEX: u8 = 13;
    let mut step_counter: u8 = 0;
    while !context.shall_stop_ongoing() {
        step_counter += 1;
@@ -114,7 +110,7 @@ pub fn JobConfigureImap(context: &Context) {
            }
            // Step 1: Load the parameters and check email-address and password
            2 => {
-                if 0 != param.server_flags & DC_LP_AUTH_OAUTH2 {
+                if 0 != param.server_flags & 0x2 {
                    // the used oauth2 addr may differ, check this.
                    // if dc_get_oauth2_addr() is not available in the oauth2 implementation,
                    // just use the given one.
@@ -150,25 +146,43 @@ pub fn JobConfigureImap(context: &Context) {
            4 => {
                progress!(context, 200);

-                if param.mail_server.is_empty()
+                // special case nauta.cu (this should eventually come
+                // from our provider-db): enforce non-tls cleartext
+                // settings and and skip all autoconfig which this
+                // provider does not offer anyway.
+                if param.addr.ends_with("@nauta.cu") {
+                    let mut p = LoginParam::new();
+
+                    p.addr = param.addr.clone();
+                    p.mail_user = param.addr.clone();
+                    p.mail_pw = param.mail_pw.clone();
+                    p.mail_port = 143;
+                    p.imap_certificate_checks = CertificateChecks::AcceptInvalidCertificates;
+
+                    p.send_user = param.addr.clone();
+                    p.send_pw = param.mail_pw.clone();
+                    p.send_port = 25;
+                    p.smtp_certificate_checks = CertificateChecks::AcceptInvalidCertificates;
+                    p.server_flags = DC_LP_AUTH_NORMAL as i32
+                        | DC_LP_IMAP_SOCKET_PLAIN as i32
+                        | DC_LP_SMTP_SOCKET_PLAIN as i32;
+
+                    // pretend we did autoconfig, to prevent further tries
+                    param_autoconfig = Some(p);
+                    step_counter = 12 - 1;
+                } else if param.mail_server.is_empty()
                            && param.mail_port == 0
                            /*&&param.mail_user.is_empty() -- the user can enter a loginname which is used by autoconfig then */
                            && param.send_server.is_empty()
                            && param.send_port == 0
                            && param.send_user.is_empty()
                            /*&&param.send_pw.is_empty() -- the password cannot be auto-configured and is no criterion for autoconfig or not */
-                            && (param.server_flags & !DC_LP_AUTH_OAUTH2) == 0
+                            && param.server_flags & !0x2 == 0
                {
-                    // no advanced parameters entered by the user: query provider-database or do Autoconfig
-                    keep_flags = param.server_flags & DC_LP_AUTH_OAUTH2;
-                    if let Some(new_param) = get_offline_autoconfig(context, &param) {
-                        // got parameters from our provider-database, skip Autoconfig, preserve the OAuth2 setting
-                        param_autoconfig = Some(new_param);
-                        step_counter = STEP_12_USE_AUTOCONFIG - 1; // minus one as step_counter is increased on next loop
-                    }
+                    keep_flags = param.server_flags & 0x2;
                } else {
-                    // advanced parameters entered by the user: skip Autoconfig
-                    step_counter = STEP_13_AFTER_AUTOCONFIG - 1; // minus one as step_counter is increased on next loop
+                    // Autoconfig is not needed so skip it.
+                    step_counter = STEP_3_INDEX - 1;
                }
                true
            }
@@ -253,10 +267,8 @@ pub fn JobConfigureImap(context: &Context) {
                }
                true
            }
-            /* C.  Do we have any autoconfig result?
-               If you change the match-number here, also update STEP_12_COPY_AUTOCONFIG above
-            */
-            STEP_12_USE_AUTOCONFIG => {
+            /* C.  Do we have any result? */
+            12 => {
                progress!(context, 500);
                if let Some(ref cfg) = param_autoconfig {
                    info!(context, "Got autoconfig: {}", &cfg);
@@ -276,8 +288,8 @@ pub fn JobConfigureImap(context: &Context) {
                true
            }
            // Step 3: Fill missing fields with defaults
-            // If you change the match-number here, also update STEP_13_AFTER_AUTOCONFIG above
-            STEP_13_AFTER_AUTOCONFIG => {
+            13 => {
+                // if you move this, don't forget to update STEP_3_INDEX, too
                if param.mail_server.is_empty() {
                    param.mail_server = format!("imap.{}", param_domain,)
                }
@@ -443,42 +455,6 @@ pub fn JobConfigureImap(context: &Context) {
    progress!(context, if success { 1000 } else { 0 });
 }

-fn get_offline_autoconfig(context: &Context, param: &LoginParam) -> Option<LoginParam> {
-    // XXX we don't have https://github.com/deltachat/provider-db  APIs
-    // integrated yet but we'll already add nauta as a first use case, also
-    // showing what we need from provider-db in the future.
-    info!(
-        context,
-        "checking internal provider-info for offline autoconfig"
-    );
-
-    if param.addr.ends_with("@nauta.cu") {
-        let mut p = LoginParam::new();
-
-        p.addr = param.addr.clone();
-        p.mail_server = "imap.nauta.cu".to_string();
-        p.mail_user = param.addr.clone();
-        p.mail_pw = param.mail_pw.clone();
-        p.mail_port = 143;
-        p.imap_certificate_checks = CertificateChecks::AcceptInvalidCertificates;
-
-        p.send_server = "smtp.nauta.cu".to_string();
-        p.send_user = param.addr.clone();
-        p.send_pw = param.mail_pw.clone();
-        p.send_port = 25;
-        p.smtp_certificate_checks = CertificateChecks::AcceptInvalidCertificates;
-        p.server_flags = DC_LP_AUTH_NORMAL as i32
-            | DC_LP_IMAP_SOCKET_STARTTLS as i32
-            | DC_LP_SMTP_SOCKET_STARTTLS as i32;
-
-        info!(context, "found offline autoconfig: {}", p);
-        Some(p)
-    } else {
-        info!(context, "no offline autoconfig found");
-        None
-    }
-}
-
 fn try_imap_connections(
    context: &Context,
    mut param: &mut LoginParam,
@@ -542,14 +518,13 @@ fn try_imap_one_param(context: &Context, param: &LoginParam) -> Option<bool> {
        param.imap_certificate_checks
    );
    info!(context, "Trying: {}", inf);
-    if task::block_on(
-        context
-            .inbox_thread
-            .read()
-            .unwrap()
-            .imap
-            .connect(context, &param),
-    ) {
+    if context
+        .inbox_thread
+        .read()
+        .unwrap()
+        .imap
+        .connect(context, &param)
+    {
        info!(context, "success: {}", inf);
        return Some(true);
    }
@@ -621,7 +596,6 @@ fn try_smtp_one_param(context: &Context, param: &LoginParam) -> Option<bool> {
 #[cfg(test)]
 mod tests {

-    use super::*;
    use crate::config::*;
    use crate::configure::JobConfigureImap;
    use crate::test_utils::*;
@@ -635,19 +609,4 @@ mod tests {
        t.ctx.set_config(Config::MailPw, Some("123456")).unwrap();
        JobConfigureImap(&t.ctx);
    }
-
-    #[test]
-    fn test_get_offline_autoconfig() {
-        let context = dummy_context().ctx;
-
-        let mut params = LoginParam::new();
-        params.addr = "someone123@example.org".to_string();
-        assert!(get_offline_autoconfig(&context, &params).is_none());
-
-        let mut params = LoginParam::new();
-        params.addr = "someone123@nauta.cu".to_string();
-        let found_params = get_offline_autoconfig(&context, &params).unwrap();
-        assert_eq!(found_params.mail_server, "imap.nauta.cu".to_string());
-        assert_eq!(found_params.send_server, "smtp.nauta.cu".to_string());
-    }
 }
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -184,9 +184,6 @@ pub const DC_VC_CONTACT_CONFIRM: i32 = 6;
 pub const DC_BOB_ERROR: i32 = 0;
 pub const DC_BOB_SUCCESS: i32 = 1;

-// max. width/height of an avatar
-pub const AVATAR_SIZE: u32 = 192;
-
 #[derive(Debug, Display, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive, FromSql, ToSql)]
 #[repr(i32)]
 pub enum Viewtype {
--- a/src/contact.rs
+++ b/src/contact.rs
@@ -1,5 +1,3 @@
-//! Contacts module
-
 use std::path::PathBuf;

 use deltachat_derive::*;
@@ -747,9 +745,6 @@ impl Contact {
        if !self.name.is_empty() {
            return &self.name;
        }
-        if !self.authname.is_empty() {
-            return &self.authname;
-        }
        &self.addr
    }

@@ -971,7 +966,7 @@ fn set_block_contact(context: &Context, contact_id: u32, new_blocking: bool) {
 pub fn set_profile_image(
    context: &Context,
    contact_id: u32,
-    profile_image: &AvatarAction,
+    profile_image: AvatarAction,
 ) -> Result<()> {
    // the given profile image is expected to be already in the blob directory
    // as profile images can be set only by receiving messages, this should be always the case, however.
--- a/src/context.rs
+++ b/src/context.rs
@@ -1,4 +1,4 @@
-//! Context module
+//! Contacts module

 use std::collections::HashMap;
 use std::ffi::OsString;
--- a/src/dc_receive_imf.rs
+++ b/src/dc_receive_imf.rs
@@ -73,13 +73,15 @@ pub fn dc_receive_imf(
    let mut sent_timestamp = 0;
    let mut created_db_entries = Vec::new();
    let mut create_event_to_send = Some(CreateEvent::MsgsChanged);
+    let mut rr_event_to_send = Vec::new();

    let mut to_ids = ContactIds::new();

    // helper method to handle early exit and memory cleanup
    let cleanup = |context: &Context,
                   create_event_to_send: &Option<CreateEvent>,
-                   created_db_entries: &Vec<(usize, MsgId)>| {
+                   created_db_entries: &Vec<(usize, MsgId)>,
+                   rr_event_to_send: &Vec<(u32, MsgId)>| {
        if let Some(create_event_to_send) = create_event_to_send {
            for (chat_id, msg_id) in created_db_entries {
                let event = match create_event_to_send {
@@ -95,6 +97,12 @@ pub fn dc_receive_imf(
                context.call_cb(event);
            }
        }
+        for (chat_id, msg_id) in rr_event_to_send {
+            context.call_cb(Event::MsgRead {
+                chat_id: *chat_id,
+                msg_id: *msg_id,
+            });
+        }
    };

    if let Some(value) = mime_parser.get(HeaderDef::Date) {
@@ -171,7 +179,7 @@ pub fn dc_receive_imf(
            }
        }
    };
-    if mime_parser.parts.last().is_some() {
+    if mime_parser.get_last_nonmeta().is_some() {
        if let Err(err) = add_parts(
            context,
            &mut mime_parser,
@@ -194,17 +202,30 @@ pub fn dc_receive_imf(
            &mut created_db_entries,
            &mut create_event_to_send,
        ) {
-            cleanup(context, &create_event_to_send, &created_db_entries);
+            cleanup(
+                context,
+                &create_event_to_send,
+                &created_db_entries,
+                &rr_event_to_send,
+            );
            bail!("add_parts error: {:?}", err);
        }
    } else {
-        // there are parts in this message, do some basic calculations so that the variables
+        // there are no non-meta data in message, do some basic calculations so that the varaiables
        // are correct in the further processing
        if sent_timestamp > time() {
            sent_timestamp = time()
        }
    }

+    mime_parser.handle_reports(
+        from_id,
+        sent_timestamp,
+        &mut rr_event_to_send,
+        &server_folder,
+        server_uid,
+    );
+
    if mime_parser.location_kml.is_some() || mime_parser.message_kml.is_some() {
        save_locations(
            context,
@@ -217,7 +238,7 @@ pub fn dc_receive_imf(
    }

    if mime_parser.user_avatar != AvatarAction::None {
-        match contact::set_profile_image(&context, from_id, &mime_parser.user_avatar) {
+        match contact::set_profile_image(&context, from_id, mime_parser.user_avatar) {
            Ok(()) => {
                context.call_cb(Event::ChatModified(chat_id));
            }
@@ -245,9 +266,12 @@ pub fn dc_receive_imf(
        "received message {} has Message-Id: {}", server_uid, rfc724_mid
    );

-    cleanup(context, &create_event_to_send, &created_db_entries);
-
-    mime_parser.handle_reports(from_id, sent_timestamp, &server_folder, server_uid);
+    cleanup(
+        context,
+        &create_event_to_send,
+        &created_db_entries,
+        &rr_event_to_send,
+    );

    Ok(())
 }
@@ -588,6 +612,10 @@ fn add_parts(
            let subject = mime_parser.get_subject().unwrap_or_default();

            for part in mime_parser.parts.iter_mut() {
+                if part.is_meta {
+                    continue;
+                }
+
                if mime_parser.location_kml.is_some()
                    && icnt == 1
                    && (part.msg == "-location-" || part.msg.is_empty())
@@ -1057,7 +1085,7 @@ fn create_or_lookup_group(
            }
        }
        send_EVENT_CHAT_MODIFIED = true;
-        chat::reset_gossiped_timestamp(context, chat_id)?;
+        chat::reset_gossiped_timestamp(context, chat_id);
    }

    if send_EVENT_CHAT_MODIFIED {
--- a/src/dc_simplify.rs
+++ b/src/dc_simplify.rs
@@ -1,169 +1,175 @@
 use crate::dehtml::*;

-/// Remove standard (RFC 3676, §4.3) footer if it is found.
-fn remove_message_footer<'a>(lines: &'a [&str]) -> &'a [&'a str] {
+#[derive(Copy, Clone)]
+pub struct Simplify {
+    pub is_forwarded: bool,
+}
+
+/// Return index of footer line in vector of message lines, or vector length if
+/// no footer is found.
+///
+/// Also return whether not-standard (rfc3676, §4.3) footer is found.
+fn find_message_footer(lines: &[&str]) -> (usize, bool) {
    for (ix, &line) in lines.iter().enumerate() {
        // quoted-printable may encode `-- ` to `-- =20` which is converted
        // back to `--  `
        match line {
-            "-- " | "--  " => return &lines[..ix],
+            "-- " | "--  " => return (ix, false),
+            "--" | "---" | "----" => return (ix, true),
            _ => (),
        }
    }
-    lines
+    (lines.len(), false)
 }

-/// Remove nonstandard footer and a boolean indicating whether such
-/// footer was removed.
-fn remove_nonstandard_footer<'a>(lines: &'a [&str]) -> (&'a [&'a str], bool) {
-    for (ix, &line) in lines.iter().enumerate() {
-        if line == "--"
-            || line == "---"
-            || line == "----"
-            || line.starts_with("-----")
-            || line.starts_with("_____")
-            || line.starts_with("=====")
-            || line.starts_with("*****")
-            || line.starts_with("~~~~~")
-        {
-            return (&lines[..ix], true);
+impl Simplify {
+    pub fn new() -> Self {
+        Simplify {
+            is_forwarded: false,
        }
    }
-    (lines, false)
-}

-fn split_lines(buf: &str) -> Vec<&str> {
-    buf.split('\n').collect()
-}
+    /// Simplify and normalise text: Remove quotes, signatures, unnecessary
+    /// lineends etc.
+    /// The data returned from simplify() must be free()'d when no longer used.
+    pub fn simplify(&mut self, input: &str, is_html: bool, is_msgrmsg: bool) -> String {
+        let mut out = if is_html {
+            dehtml(input)
+        } else {
+            input.to_string()
+        };

-/// Simplify message text for chat display.
-/// Remove quotes, signatures, trailing empty lines etc.
-pub fn simplify(input: &str, is_html: bool, is_chat_message: bool) -> (String, bool) {
-    let mut out = if is_html {
-        dehtml(input)
-    } else {
-        input.to_string()
-    };
+        out.retain(|c| c != '\r');
+        out = self.simplify_plain_text(&out, is_msgrmsg);
+        out.retain(|c| c != '\r');

-    out.retain(|c| c != '\r');
-    let lines = split_lines(&out);
-    let (lines, is_forwarded) = skip_forward_header(&lines);
-
-    let lines = remove_message_footer(lines);
-    let (lines, has_nonstandard_footer) = remove_nonstandard_footer(lines);
-    let (lines, has_bottom_quote) = if !is_chat_message {
-        remove_bottom_quote(lines)
-    } else {
-        (lines, false)
-    };
-    let (lines, has_top_quote) = if !is_chat_message {
-        remove_top_quote(lines)
-    } else {
-        (lines, false)
-    };
-
-    // re-create buffer from the remaining lines
-    let text = render_message(
-        lines,
-        has_top_quote,
-        has_nonstandard_footer || has_bottom_quote,
-    );
-    (text, is_forwarded)
-}
-
-/// Skips "forwarded message" header.
-/// Returns message body lines and a boolean indicating whether
-/// a message is forwarded or not.
-fn skip_forward_header<'a>(lines: &'a [&str]) -> (&'a [&'a str], bool) {
-    if lines.len() >= 3
-        && lines[0] == "---------- Forwarded message ----------"
-        && lines[1].starts_with("From: ")
-        && lines[2].is_empty()
-    {
-        (&lines[3..], true)
-    } else {
-        (lines, false)
+        out
    }
-}

-fn remove_bottom_quote<'a>(lines: &'a [&str]) -> (&'a [&'a str], bool) {
-    let mut last_quoted_line = None;
-    for (l, line) in lines.iter().enumerate().rev() {
-        if is_plain_quote(line) {
-            last_quoted_line = Some(l)
-        } else if !is_empty_line(line) {
-            break;
-        }
-    }
-    if let Some(mut l_last) = last_quoted_line {
-        if l_last > 1 && is_empty_line(lines[l_last - 1]) {
-            l_last -= 1
-        }
-        if l_last > 1 {
-            let line = lines[l_last - 1];
-            if is_quoted_headline(line) {
-                l_last -= 1
+    /**
+     * Simplify Plain Text
+     */
+    #[allow(non_snake_case, clippy::mut_range_bound)]
+    fn simplify_plain_text(&mut self, buf_terminated: &str, is_msgrmsg: bool) -> String {
+        /* This function ...
+        ... removes all text after the line `-- ` (footer mark)
+        ... removes full quotes at the beginning and at the end of the text -
+            these are all lines starting with the character `>`
+        ... remove a non-empty line before the removed quote (contains sth. like "On 2.9.2016, Bjoern wrote:" in different formats and lanugages) */
+        /* split the given buffer into lines */
+        let lines: Vec<_> = buf_terminated.split('\n').collect();
+        let mut l_first: usize = 0;
+        let mut is_cut_at_begin = false;
+        let (mut l_last, mut is_cut_at_end) = find_message_footer(&lines);
+
+        if l_last > l_first + 2 {
+            let line0 = lines[l_first];
+            let line1 = lines[l_first + 1];
+            let line2 = lines[l_first + 2];
+            if line0 == "---------- Forwarded message ----------"
+                && line1.starts_with("From: ")
+                && line2.is_empty()
+            {
+                self.is_forwarded = true;
+                l_first += 3
            }
        }
-        (&lines[..l_last], true)
-    } else {
-        (lines, false)
-    }
-}
-
-fn remove_top_quote<'a>(lines: &'a [&str]) -> (&'a [&'a str], bool) {
-    let mut last_quoted_line = None;
-    let mut has_quoted_headline = false;
-    for (l, line) in lines.iter().enumerate() {
-        if is_plain_quote(line) {
-            last_quoted_line = Some(l)
-        } else if !is_empty_line(line) {
-            if is_quoted_headline(line) && !has_quoted_headline && last_quoted_line.is_none() {
-                has_quoted_headline = true
-            } else {
-                /* non-quoting line found */
+        for l in l_first..l_last {
+            let line = lines[l];
+            if line == "-----"
+                || line == "_____"
+                || line == "====="
+                || line == "*****"
+                || line == "~~~~~"
+            {
+                l_last = l;
+                is_cut_at_end = true;
+                /* done */
                break;
            }
        }
-    }
-    if let Some(last_quoted_line) = last_quoted_line {
-        (&lines[last_quoted_line + 1..], true)
-    } else {
-        (lines, false)
-    }
-}
-
-fn render_message(lines: &[&str], is_cut_at_begin: bool, is_cut_at_end: bool) -> String {
-    let mut ret = String::new();
-    if is_cut_at_begin {
-        ret += "[...]";
-    }
-    /* we write empty lines only in case and non-empty line follows */
-    let mut pending_linebreaks = 0;
-    let mut empty_body = true;
-    for line in lines {
-        if is_empty_line(line) {
-            pending_linebreaks += 1
-        } else {
-            if !empty_body {
-                if pending_linebreaks > 2 {
-                    pending_linebreaks = 2
-                }
-                while 0 != pending_linebreaks {
-                    ret += "\n";
-                    pending_linebreaks -= 1
+        if !is_msgrmsg {
+            let mut l_lastQuotedLine = None;
+            for l in (l_first..l_last).rev() {
+                let line = lines[l];
+                if is_plain_quote(line) {
+                    l_lastQuotedLine = Some(l)
+                } else if !is_empty_line(line) {
+                    break;
+                }
+            }
+            if let Some(last_quoted_line) = l_lastQuotedLine {
+                l_last = last_quoted_line;
+                is_cut_at_end = true;
+                if l_last > 1 && is_empty_line(lines[l_last - 1]) {
+                    l_last -= 1
+                }
+                if l_last > 1 {
+                    let line = lines[l_last - 1];
+                    if is_quoted_headline(line) {
+                        l_last -= 1
+                    }
                }
            }
-            // the incoming message might contain invalid UTF8
-            ret += line;
-            empty_body = false;
-            pending_linebreaks = 1
        }
+        if !is_msgrmsg {
+            let mut l_lastQuotedLine_0 = None;
+            let mut hasQuotedHeadline = 0;
+            for l in l_first..l_last {
+                let line = lines[l];
+                if is_plain_quote(line) {
+                    l_lastQuotedLine_0 = Some(l)
+                } else if !is_empty_line(line) {
+                    if is_quoted_headline(line)
+                        && 0 == hasQuotedHeadline
+                        && l_lastQuotedLine_0.is_none()
+                    {
+                        hasQuotedHeadline = 1i32
+                    } else {
+                        /* non-quoting line found */
+                        break;
+                    }
+                }
+            }
+            if let Some(last_quoted_line) = l_lastQuotedLine_0 {
+                l_first = last_quoted_line + 1;
+                is_cut_at_begin = true
+            }
+        }
+        /* re-create buffer from the remaining lines */
+        let mut ret = String::new();
+        if is_cut_at_begin {
+            ret += "[...]";
+        }
+        /* we write empty lines only in case and non-empty line follows */
+        let mut pending_linebreaks = 0;
+        let mut content_lines_added = 0;
+        for l in l_first..l_last {
+            let line = lines[l];
+            if is_empty_line(line) {
+                pending_linebreaks += 1
+            } else {
+                if 0 != content_lines_added {
+                    if pending_linebreaks > 2i32 {
+                        pending_linebreaks = 2i32
+                    }
+                    while 0 != pending_linebreaks {
+                        ret += "\n";
+                        pending_linebreaks -= 1
+                    }
+                }
+                // the incoming message might contain invalid UTF8
+                ret += line;
+                content_lines_added += 1;
+                pending_linebreaks = 1i32
+            }
+        }
+        if is_cut_at_end && (!is_cut_at_begin || 0 != content_lines_added) {
+            ret += " [...]";
+        }
+
+        ret
    }
-    if is_cut_at_end && (!is_cut_at_begin || !empty_body) {
-        ret += " [...]";
-    }
-    ret
 }

 /**
@@ -207,59 +213,50 @@ mod tests {
        #[test]
        // proptest does not support [[:graphical:][:space:]] regex.
        fn test_simplify_plain_text_fuzzy(input in "[!-~\t \n]+") {
-            let (output, _is_forwarded) = simplify(&input, false, true);
+            let output = Simplify::new().simplify_plain_text(&input, true);
            assert!(output.split('\n').all(|s| s != "-- "));
        }
    }

    #[test]
    fn test_simplify_trim() {
+        let mut simplify = Simplify::new();
        let html = "\r\r\nline1<br>\r\n\r\n\r\rline2\n\r";
-        let (plain, is_forwarded) = simplify(html, true, false);
+        let plain = simplify.simplify(html, true, false);

        assert_eq!(plain, "line1\nline2");
-        assert!(!is_forwarded);
    }

    #[test]
    fn test_simplify_parse_href() {
+        let mut simplify = Simplify::new();
        let html = "<a href=url>text</a";
-        let (plain, is_forwarded) = simplify(html, true, false);
+        let plain = simplify.simplify(html, true, false);

        assert_eq!(plain, "[text](url)");
-        assert!(!is_forwarded);
    }

    #[test]
    fn test_simplify_bold_text() {
+        let mut simplify = Simplify::new();
        let html = "<!DOCTYPE name [<!DOCTYPE ...>]><!-- comment -->text <b><?php echo ... ?>bold</b><![CDATA[<>]]>";
-        let (plain, is_forwarded) = simplify(html, true, false);
+        let plain = simplify.simplify(html, true, false);

        assert_eq!(plain, "text *bold*<>");
-        assert!(!is_forwarded);
-    }
-
-    #[test]
-    fn test_simplify_forwarded_message() {
-        let text = "---------- Forwarded message ----------\r\nFrom: test@example.com\r\n\r\nForwarded message\r\n-- \r\nSignature goes here";
-        let (plain, is_forwarded) = simplify(text, false, false);
-
-        assert_eq!(plain, "Forwarded message");
-        assert!(is_forwarded);
    }

    #[test]
    fn test_simplify_html_encoded() {
+        let mut simplify = Simplify::new();
        let html =
                "&lt;&gt;&quot;&apos;&amp; &auml;&Auml;&ouml;&Ouml;&uuml;&Uuml;&szlig; foo&AElig;&ccedil;&Ccedil; &diams;&lrm;&rlm;&zwnj;&noent;&zwj;";

-        let (plain, is_forwarded) = simplify(html, true, false);
+        let plain = simplify.simplify(html, true, false);

        assert_eq!(
            plain,
            "<>\"\'& äÄöÖüÜß fooÆçÇ \u{2666}\u{200e}\u{200f}\u{200c}&noent;\u{200d}"
        );
-        assert!(!is_forwarded);
    }

    #[test]
@@ -273,19 +270,4 @@ mod tests {
        assert!(!is_plain_quote("Life is pain"));
        assert!(!is_plain_quote(""));
    }
-
-    #[test]
-    fn test_remove_top_quote() {
-        let (lines, has_top_quote) = remove_top_quote(&["> first", "> second"]);
-        assert!(lines.is_empty());
-        assert!(has_top_quote);
-
-        let (lines, has_top_quote) = remove_top_quote(&["> first", "> second", "not a quote"]);
-        assert_eq!(lines, &["not a quote"]);
-        assert!(has_top_quote);
-
-        let (lines, has_top_quote) = remove_top_quote(&["not a quote", "> first", "> second"]);
-        assert_eq!(lines, &["not a quote", "> first", "> second"]);
-        assert!(!has_top_quote);
-    }
 }
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -381,14 +381,11 @@ pub(crate) fn dc_copy_file(
    }
 }

-pub(crate) fn dc_create_folder(
-    context: &Context,
-    path: impl AsRef<std::path::Path>,
-) -> Result<(), std::io::Error> {
+pub(crate) fn dc_create_folder(context: &Context, path: impl AsRef<std::path::Path>) -> bool {
    let path_abs = dc_get_abs_path(context, &path);
    if !path_abs.exists() {
        match fs::create_dir_all(path_abs) {
-            Ok(_) => Ok(()),
+            Ok(_) => true,
            Err(err) => {
                warn!(
                    context,
@@ -396,11 +393,11 @@ pub(crate) fn dc_create_folder(
                    path.as_ref().display(),
                    err
                );
-                Err(err)
+                false
            }
        }
    } else {
-        Ok(())
+        true
    }
 }

@@ -828,7 +825,7 @@ mod tests {

        assert!(dc_delete_file(context, "$BLOBDIR/foobar"));
        assert!(dc_delete_file(context, "$BLOBDIR/dada"));
-        assert!(dc_create_folder(context, "$BLOBDIR/foobar-folder").is_ok());
+        assert!(dc_create_folder(context, "$BLOBDIR/foobar-folder"));
        assert!(dc_file_exist(context, "$BLOBDIR/foobar-folder",));
        assert!(!dc_delete_file(context, "$BLOBDIR/foobar-folder"));

--- a/src/e2ee.rs
+++ b/src/e2ee.rs
@@ -2,7 +2,7 @@

 use std::collections::HashSet;

-use mailparse::{MailHeaderMap, ParsedMail};
+use mailparse::MailHeaderMap;
 use num_traits::FromPrimitive;

 use crate::aheader::*;
@@ -14,6 +14,7 @@ use crate::keyring::*;
 use crate::peerstate::*;
 use crate::pgp;
 use crate::securejoin::handle_degrade_event;
+use crate::wrapmime;

 #[derive(Debug)]
 pub struct EncryptHelper {
@@ -117,7 +118,7 @@ impl EncryptHelper {

 pub fn try_decrypt(
    context: &Context,
-    mail: &ParsedMail<'_>,
+    mail: &mailparse::ParsedMail<'_>,
    message_time: i64,
 ) -> Result<(Option<Vec<u8>>, HashSet<String>)> {
    let from = mail
@@ -231,36 +232,9 @@ fn load_or_generate_self_public_key(context: &Context, self_addr: impl AsRef<str
    }
 }

-/// Returns a reference to the encrypted payload and validates the autocrypt structure.
-fn get_autocrypt_mime<'a, 'b>(mail: &'a ParsedMail<'b>) -> Result<&'a ParsedMail<'b>> {
-    ensure!(
-        mail.ctype.mimetype == "multipart/encrypted",
-        "Not a multipart/encrypted message: {}",
-        mail.ctype.mimetype
-    );
-    ensure!(
-        mail.subparts.len() == 2,
-        "Invalid Autocrypt Level 1 Mime Parts"
-    );
-
-    ensure!(
-        mail.subparts[0].ctype.mimetype == "application/pgp-encrypted",
-        "Invalid Autocrypt Level 1 version part: {:?}",
-        mail.subparts[0].ctype,
-    );
-
-    ensure!(
-        mail.subparts[1].ctype.mimetype == "application/octet-stream",
-        "Invalid Autocrypt Level 1 encrypted part: {:?}",
-        mail.subparts[1].ctype
-    );
-
-    Ok(&mail.subparts[1])
-}
-
 fn decrypt_if_autocrypt_message<'a>(
    context: &Context,
-    mail: &ParsedMail<'a>,
+    mail: &mailparse::ParsedMail<'a>,
    private_keyring: &Keyring,
    public_keyring_for_validate: &Keyring,
    ret_valid_signatures: &mut HashSet<String>,
@@ -272,7 +246,7 @@ fn decrypt_if_autocrypt_message<'a>(
    //
    // Errors are returned for failures related to decryption of AC-messages.

-    let encrypted_data_part = match get_autocrypt_mime(mail) {
+    let encrypted_data_part = match wrapmime::get_autocrypt_mime(mail) {
        Err(_) => {
            // not an autocrypt mime message, abort and ignore
            return Ok(None);
@@ -293,7 +267,7 @@ fn decrypt_if_autocrypt_message<'a>(
 /// Returns Ok(None) if nothing encrypted was found.
 fn decrypt_part(
    _context: &Context,
-    mail: &ParsedMail<'_>,
+    mail: &mailparse::ParsedMail<'_>,
    private_keyring: &Keyring,
    public_keyring_for_validate: &Keyring,
    ret_valid_signatures: &mut HashSet<String>,
@@ -339,7 +313,7 @@ fn has_decrypted_pgp_armor(input: &[u8]) -> bool {
 /// However, Delta Chat itself has no problem with encrypted multipart/report
 /// parts and MUAs should be encouraged to encrpyt multipart/reports as well so
 /// that we could use the normal Autocrypt processing.
-fn contains_report(mail: &ParsedMail<'_>) -> bool {
+fn contains_report(mail: &mailparse::ParsedMail<'_>) -> bool {
    mail.ctype.mimetype == "multipart/report"
 }

--- a/src/imap/idle.rs
+++ b/src/imap/idle.rs
@@ -241,7 +241,7 @@ impl Imap {
                "IMAP-fake-IDLE done after {:.4}s",
                SystemTime::now()
                    .duration_since(fake_idle_start_time)
-                    .unwrap_or_default()
+                    .unwrap()
                    .as_millis() as f64
                    / 1000.,
            );
--- a/src/imap/mod.rs
+++ b/src/imap/mod.rs
@@ -23,6 +23,7 @@ use crate::message::{self, update_server_uid};
 use crate::oauth2::dc_get_oauth2_access_token;
 use crate::param::Params;
 use crate::stock::StockMessage;
+use crate::wrapmime;

 mod idle;
 pub mod select_folder;
@@ -63,9 +64,6 @@ pub enum Error {
    #[fail(display = "IMAP select folder error")]
    SelectFolderError(#[cause] select_folder::Error),

-    #[fail(display = "No mailbox selected, folder: {:?}", _0)]
-    NoMailbox(String),
-
    #[fail(display = "IMAP other error: {:?}", _0)]
    Other(String),
 }
@@ -331,7 +329,9 @@ impl Imap {

    /// Connects to imap account using already-configured parameters.
    pub fn connect_configured(&self, context: &Context) -> Result<()> {
-        if async_std::task::block_on(self.is_connected()) && !self.should_reconnect() {
+        if async_std::task::block_on(async move {
+            self.is_connected().await && !self.should_reconnect()
+        }) {
            return Ok(());
        }
        if !context.sql.get_raw_config_bool(context, "configured") {
@@ -341,7 +341,7 @@ impl Imap {
        let param = LoginParam::from_database(context, "configured_");
        // the trailing underscore is correct

-        if task::block_on(self.connect(context, &param)) {
+        if self.connect(context, &param) {
            self.ensure_configured_folders(context, true)
        } else {
            Err(Error::ConnectionFailed(format!("{}", param)))
@@ -350,80 +350,82 @@ impl Imap {

    /// tries connecting to imap account using the specific login
    /// parameters
-    pub async fn connect(&self, context: &Context, lp: &LoginParam) -> bool {
-        if lp.mail_server.is_empty() || lp.mail_user.is_empty() || lp.mail_pw.is_empty() {
-            return false;
-        }
+    pub fn connect(&self, context: &Context, lp: &LoginParam) -> bool {
+        task::block_on(async move {
+            if lp.mail_server.is_empty() || lp.mail_user.is_empty() || lp.mail_pw.is_empty() {
+                return false;
+            }

-        {
-            let addr = &lp.addr;
-            let imap_server = &lp.mail_server;
-            let imap_port = lp.mail_port as u16;
-            let imap_user = &lp.mail_user;
-            let imap_pw = &lp.mail_pw;
-            let server_flags = lp.server_flags as usize;
+            {
+                let addr = &lp.addr;
+                let imap_server = &lp.mail_server;
+                let imap_port = lp.mail_port as u16;
+                let imap_user = &lp.mail_user;
+                let imap_pw = &lp.mail_pw;
+                let server_flags = lp.server_flags as usize;

-            let mut config = self.config.write().await;
-            config.addr = addr.to_string();
-            config.imap_server = imap_server.to_string();
-            config.imap_port = imap_port;
-            config.imap_user = imap_user.to_string();
-            config.imap_pw = imap_pw.to_string();
-            config.certificate_checks = lp.imap_certificate_checks;
-            config.server_flags = server_flags;
-        }
+                let mut config = self.config.write().await;
+                config.addr = addr.to_string();
+                config.imap_server = imap_server.to_string();
+                config.imap_port = imap_port;
+                config.imap_user = imap_user.to_string();
+                config.imap_pw = imap_pw.to_string();
+                config.certificate_checks = lp.imap_certificate_checks;
+                config.server_flags = server_flags;
+            }

-        if let Err(err) = self.setup_handle_if_needed(context).await {
-            warn!(context, "failed to setup imap handle: {}", err);
-            self.free_connect_params().await;
-            return false;
-        }
+            if let Err(err) = self.setup_handle_if_needed(context).await {
+                warn!(context, "failed to setup imap handle: {}", err);
+                self.free_connect_params().await;
+                return false;
+            }

-        let teardown = match &mut *self.session.lock().await {
-            Some(ref mut session) => match session.capabilities().await {
-                Ok(caps) => {
-                    if !context.sql.is_open() {
-                        warn!(context, "IMAP-LOGIN as {} ok but ABORTING", lp.mail_user,);
-                        true
-                    } else {
-                        let can_idle = caps.has_str("IDLE");
-                        let has_xlist = caps.has_str("XLIST");
-                        let caps_list = caps.iter().fold(String::new(), |s, c| {
-                            if let Capability::Atom(x) = c {
-                                s + &format!(" {}", x)
-                            } else {
-                                s + &format!(" {:?}", c)
-                            }
-                        });
+            let teardown = match &mut *self.session.lock().await {
+                Some(ref mut session) => match session.capabilities().await {
+                    Ok(caps) => {
+                        if !context.sql.is_open() {
+                            warn!(context, "IMAP-LOGIN as {} ok but ABORTING", lp.mail_user,);
+                            true
+                        } else {
+                            let can_idle = caps.has_str("IDLE");
+                            let has_xlist = caps.has_str("XLIST");
+                            let caps_list = caps.iter().fold(String::new(), |s, c| {
+                                if let Capability::Atom(x) = c {
+                                    s + &format!(" {}", x)
+                                } else {
+                                    s + &format!(" {:?}", c)
+                                }
+                            });

-                        self.config.write().await.can_idle = can_idle;
-                        self.config.write().await.has_xlist = has_xlist;
-                        *self.connected.lock().await = true;
-                        emit_event!(
-                            context,
-                            Event::ImapConnected(format!(
-                                "IMAP-LOGIN as {}, capabilities: {}",
-                                lp.mail_user, caps_list,
-                            ))
-                        );
-                        false
+                            self.config.write().await.can_idle = can_idle;
+                            self.config.write().await.has_xlist = has_xlist;
+                            *self.connected.lock().await = true;
+                            emit_event!(
+                                context,
+                                Event::ImapConnected(format!(
+                                    "IMAP-LOGIN as {}, capabilities: {}",
+                                    lp.mail_user, caps_list,
+                                ))
+                            );
+                            false
+                        }
                    }
-                }
-                Err(err) => {
-                    info!(context, "CAPABILITY command error: {}", err);
-                    true
-                }
-            },
-            None => true,
-        };
+                    Err(err) => {
+                        info!(context, "CAPABILITY command error: {}", err);
+                        true
+                    }
+                },
+                None => true,
+            };

-        if teardown {
-            self.disconnect(context);
+            if teardown {
+                self.disconnect(context);

-            false
-        } else {
-            true
-        }
+                false
+            } else {
+                true
+            }
+        })
    }

    pub fn disconnect(&self, context: &Context) {
@@ -481,10 +483,7 @@ impl Imap {
            let (uid_validity, last_seen_uid) = self.get_config_last_seen_uid(context, &folder);

            let config = self.config.read().await;
-            let mailbox = config
-                .selected_mailbox
-                .as_ref()
-                .ok_or_else(|| Error::NoMailbox(folder.to_string()))?;
+            let mailbox = config.selected_mailbox.as_ref().expect("just selected");

            let new_uid_validity = match mailbox.uid_validity {
                Some(v) => v,
@@ -1228,18 +1227,6 @@ fn precheck_imf(context: &Context, rfc724_mid: &str, server_folder: &str, server
    }
 }

-fn parse_message_id(message_id: &[u8]) -> crate::error::Result<String> {
-    let value = std::str::from_utf8(message_id)?;
-    let addrs = mailparse::addrparse(value)
-        .map_err(|err| format_err!("failed to parse message id {:?}", err))?;
-
-    if let Some(info) = addrs.extract_single_info() {
-        return Ok(info.addr);
-    }
-
-    bail!("could not parse message_id: {}", value);
-}
-
 fn prefetch_get_message_id(prefetch_msg: &Fetch) -> Result<String> {
    if prefetch_msg.envelope().is_none() {
        return Err(Error::Other(
@@ -1252,22 +1239,5 @@ fn prefetch_get_message_id(prefetch_msg: &Fetch) -> Result<String> {
        return Err(Error::Other("prefetch: No message ID found".to_string()));
    }

-    parse_message_id(&message_id.unwrap()).map_err(Into::into)
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_parse_message_id() {
-        assert_eq!(
-            parse_message_id(b"Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org").unwrap(),
-            "Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org"
-        );
-        assert_eq!(
-            parse_message_id(b"<Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org>").unwrap(),
-            "Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org"
-        );
-    }
+    wrapmime::parse_message_id(&message_id.unwrap()).map_err(Into::into)
 }
--- a/src/imap_client.rs
+++ b/src/imap_client.rs
@@ -46,7 +46,7 @@ impl Client {
        let _greeting = client
            .read_response()
            .await
-            .ok_or_else(|| ImapError::Bad("failed to read greeting".to_string()))?;
+            .expect("failed to read greeting");

        Ok(Client::Secure(client))
    }
@@ -61,7 +61,7 @@ impl Client {
        let _greeting = client
            .read_response()
            .await
-            .ok_or_else(|| ImapError::Bad("failed to read greeting".to_string()))?;
+            .expect("failed to read greeting");

        Ok(Client::Insecure(client))
    }
--- a/src/imex.rs
+++ b/src/imex.rs
@@ -380,7 +380,7 @@ pub fn JobImexImap(context: &Context, job: &Job) -> Result<()> {
            context.free_ongoing();
            bail!("Cannot create private key or private key not available.");
        } else {
-            dc_create_folder(context, &param)?;
+            dc_create_folder(context, &param);
        }
    }
    let path = Path::new(param);
--- a/src/job.rs
+++ b/src/job.rs
@@ -201,17 +201,9 @@ impl Job {
                        println!("{}", String::from_utf8_lossy(&body));
                    }
                    match task::block_on(smtp.send(context, recipients_list, body, self.job_id)) {
-                        Err(crate::smtp::send::Error::SendTimeout(err)) => {
-                            warn!(context, "SMTP send timed out {:?}", err);
-                            smtp.disconnect();
-                            self.try_again_later(
-                                TryAgain::AtOnce,
-                                Some("send-timeout".to_string()),
-                            );
-                        }
                        Err(crate::smtp::send::Error::SendError(err)) => {
                            // Remote error, retry later.
-                            warn!(context, "SMTP failed to send: {}", err);
+                            info!(context, "SMTP failed to send: {}", err);
                            smtp.disconnect();
                            self.try_again_later(TryAgain::AtOnce, Some(err.to_string()));
                        }
@@ -639,7 +631,7 @@ pub fn job_send_msg(context: &Context, msg_id: MsgId) -> Result<(), Error> {
    msg.try_calc_and_set_dimensions(context).ok();

    /* create message */
-    let needs_encryption = msg.param.get_bool(Param::GuaranteeE2ee).unwrap_or_default();
+    let needs_encryption = msg.param.get_int(Param::GuaranteeE2ee).unwrap_or_default();

    let attach_selfavatar = match chat::shall_attach_selfavatar(context, msg.chat_id) {
        Ok(attach_selfavatar) => attach_selfavatar,
@@ -655,7 +647,7 @@ pub fn job_send_msg(context: &Context, msg_id: MsgId) -> Result<(), Error> {
        err
    })?;

-    if needs_encryption && !rendered_msg.is_encrypted {
+    if 0 != needs_encryption && !rendered_msg.is_encrypted {
        /* unrecoverable */
        message::set_msg_failed(
            context,
@@ -686,7 +678,7 @@ pub fn job_send_msg(context: &Context, msg_id: MsgId) -> Result<(), Error> {
    }

    if rendered_msg.is_gossiped {
-        chat::set_gossiped_timestamp(context, msg.chat_id, time())?;
+        chat::set_gossiped_timestamp(context, msg.chat_id, time());
    }

    if 0 != rendered_msg.last_added_location_id {
@@ -708,7 +700,7 @@ pub fn job_send_msg(context: &Context, msg_id: MsgId) -> Result<(), Error> {
        }
    }

-    if rendered_msg.is_encrypted && !needs_encryption {
+    if rendered_msg.is_encrypted && needs_encryption == 0 {
        msg.param.set_int(Param::GuaranteeE2ee, 1);
        msg.save_param_to_disk(context);
    }
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,17 @@
 #![deny(clippy::correctness, missing_debug_implementations, clippy::all)]
 // for now we hide warnings to not clutter/hide errors during "cargo clippy"
-#![allow(clippy::cognitive_complexity, clippy::too_many_arguments)]
-#![allow(clippy::unreadable_literal, clippy::match_bool)]
+#![allow(
+    clippy::type_complexity,
+    clippy::cognitive_complexity,
+    clippy::too_many_arguments,
+    clippy::block_in_if_condition_stmt,
+    clippy::large_enum_variant
+)]
+#![allow(
+    clippy::unreadable_literal,
+    clippy::needless_range_loop,
+    clippy::match_bool
+)]
 #![feature(ptr_wrapping_offset_from)]
 #![feature(drain_filter)]

@@ -20,7 +30,7 @@ extern crate strum_macros;
 extern crate debug_stub_derive;

 #[macro_use]
-pub mod log;
+mod log;
 #[macro_use]
 pub mod error;

@@ -63,6 +73,7 @@ pub mod sql;
 pub mod stock;
 mod token;
 #[macro_use]
+mod wrapmime;
 mod dehtml;

 pub mod dc_receive_imf;
--- a/src/log.rs
+++ b/src/log.rs
@@ -7,14 +7,7 @@ macro_rules! info {
    };
    ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {{
        let formatted = format!($msg, $($args),*);
-        let thread = ::std::thread::current();
-        let full = format!("{thid:?}/{thname} {file}:{line}: {msg}",
-                           thid = thread.id(),
-                           thname = thread.name().unwrap_or("unnamed"),
-                           file = file!(),
-                           line = line!(),
-                           msg = &formatted);
-        emit_event!($ctx, $crate::Event::Info(full));
+        emit_event!($ctx, $crate::Event::Info(formatted));
    }};
 }

@@ -25,14 +18,7 @@ macro_rules! warn {
    };
    ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {{
        let formatted = format!($msg, $($args),*);
-        let thread = ::std::thread::current();
-        let full = format!("{thid:?}/{thname} {file}:{line}: {msg}",
-                           thid = thread.id(),
-                           thname = thread.name().unwrap_or("unnamed"),
-                           file = file!(),
-                           line = line!(),
-                           msg = &formatted);
-        emit_event!($ctx, $crate::Event::Warning(full));
+        emit_event!($ctx, $crate::Event::Warning(formatted));
    }};
 }

--- a/src/login_param.rs
+++ b/src/login_param.rs
@@ -102,7 +102,19 @@ impl LoginParam {
            };

        let key = format!("{}server_flags", prefix);
-        let server_flags = sql.get_raw_config_int(context, key).unwrap_or_default();
+        let mut server_flags = sql.get_raw_config_int(context, key).unwrap_or_default();
+
+        // XXX special case nauta.cu: enforce cleartext instead of TLS because
+        // Rust-TLS does not support nauta.cu's RSA1024 TLS cert.
+        // see https://github.com/deltachat/deltachat-core-rust/issues/1007
+        if mail_server.ends_with(".nauta.cu") {
+            server_flags &= !0x300; // clear out IMAP_SSL/STARTTLS
+            server_flags |= 0x400; // set IMAP_PLAIN
+        }
+        if send_server.ends_with(".nauta.cu") {
+            server_flags &= !0x30000; // clear out SMTP_SSL/STARTTLS
+            server_flags |= 0x40000; // set SMTP_PLAIN
+        }

        LoginParam {
            addr,
--- a/src/mimefactory.rs
+++ b/src/mimefactory.rs
@@ -304,8 +304,9 @@ impl<'a, 'b> MimeFactory<'a, 'b> {
            Loaded::Message => {
                let chat = self.chat.as_ref().unwrap();
                // beside key- and member-changes, force re-gossip every 48 hours
-                let gossiped_timestamp = chat.get_gossiped_timestamp(self.context);
-                if gossiped_timestamp == 0 || (gossiped_timestamp + (2 * 24 * 60 * 60)) > time() {
+                if chat.gossiped_timestamp == 0
+                    || (chat.gossiped_timestamp + (2 * 24 * 60 * 60)) > time()
+                {
                    return true;
                }

@@ -462,6 +463,7 @@ impl<'a, 'b> MimeFactory<'a, 'b> {
        }

        let min_verified = self.min_verified();
+        let do_gossip = self.should_do_gossip();
        let grpimage = self.grpimage();
        let force_plaintext = self.should_force_plaintext();
        let subject_str = self.subject_str();
@@ -509,17 +511,14 @@ impl<'a, 'b> MimeFactory<'a, 'b> {
        unprotected_headers.push(Header::new_with_value("To".into(), to).unwrap());
        unprotected_headers.push(Header::new_with_value("From".into(), vec![from]).unwrap());

-        let mut is_gossiped = false;
-
        let outer_message = if is_encrypted {
-            // Add gossip headers in chats with multiple recipients
-            if peerstates.len() > 1 && self.should_do_gossip() {
+            // Add gossip headers
+            if do_gossip {
                for peerstate in peerstates.iter().filter_map(|(state, _)| state.as_ref()) {
                    if peerstate.peek_key(min_verified).is_some() {
                        if let Some(header) = peerstate.render_gossip_header(min_verified) {
                            message =
                                message.header(Header::new("Autocrypt-Gossip".into(), header));
-                            is_gossiped = true;
                        }
                    }
                }
@@ -600,6 +599,8 @@ impl<'a, 'b> MimeFactory<'a, 'b> {
            message
        };

+        let is_gossiped = is_encrypted && do_gossip && !peerstates.is_empty();
+
        let MimeFactory {
            recipients_addr,
            from_addr,
--- a/src/mimeparser.rs
+++ b/src/mimeparser.rs
@@ -2,7 +2,7 @@ use std::collections::{HashMap, HashSet};

 use deltachat_derive::{FromSql, ToSql};
 use lettre_email::mime::{self, Mime};
-use mailparse::{DispositionType, MailAddr, MailHeaderMap};
+use mailparse::{DispositionType, MailHeaderMap};

 use crate::aheader::Aheader;
 use crate::blob::BlobObject;
@@ -14,11 +14,11 @@ use crate::dc_simplify::*;
 use crate::dc_tools::*;
 use crate::e2ee;
 use crate::error::Result;
-use crate::events::Event;
 use crate::headerdef::HeaderDef;
 use crate::job::{job_add, Action};
 use crate::location;
 use crate::message;
+use crate::message::MsgId;
 use crate::param::*;
 use crate::peerstate::Peerstate;
 use crate::securejoin::handle_degrade_event;
@@ -40,6 +40,7 @@ pub struct MimeParser<'a> {
    pub user_avatar: AvatarAction,
    pub group_avatar: AvatarAction,
    reports: Vec<Report>,
+    mdns_enabled: bool,
    parsed_protected_headers: bool,
 }

@@ -85,6 +86,7 @@ const MIME_AC_SETUP_FILE: &str = "application/autocrypt-setup";
 impl<'a> MimeParser<'a> {
    pub fn from_bytes(context: &'a Context, body: &[u8]) -> Result<Self> {
        let mail = mailparse::parse_mail(body)?;
+        let mdns_enabled = context.get_config_bool(Config::MdnsEnabled);

        let mut parser = MimeParser {
            parts: Vec::new(),
@@ -102,6 +104,7 @@ impl<'a> MimeParser<'a> {
            message_kml: None,
            user_avatar: AvatarAction::None,
            group_avatar: AvatarAction::None,
+            mdns_enabled,
            parsed_protected_headers: false,
        };

@@ -208,6 +211,7 @@ impl<'a> MimeParser<'a> {
                        || filepart.typ == Viewtype::Voice
                        || filepart.typ == Viewtype::Video
                        || filepart.typ == Viewtype::File)
+                    && !filepart.is_meta
            };

            if need_drop {
@@ -224,7 +228,7 @@ impl<'a> MimeParser<'a> {
            }
        }
        if let Some(ref subject) = self.get_subject() {
-            let mut prepend_subject = true;
+            let mut prepend_subject = 1i32;
            if !self.decrypting_failed {
                let colon = subject.find(':');
                if colon == Some(2)
@@ -232,10 +236,10 @@ impl<'a> MimeParser<'a> {
                    || self.has_chat_version()
                    || subject.contains("Chat:")
                {
-                    prepend_subject = false
+                    prepend_subject = 0i32
                }
            }
-            if prepend_subject {
+            if 0 != prepend_subject {
                let subj = if let Some(n) = subject.find('[') {
                    &subject[0..n]
                } else {
@@ -287,27 +291,30 @@ impl<'a> MimeParser<'a> {
                }
            }
        }
+        if !self.decrypting_failed {
+            if let Some(dn_field) = self.get(HeaderDef::ChatDispositionNotificationTo) {
+                if self.get_last_nonmeta().is_some() {
+                    let addrs = mailparse::addrparse(&dn_field).unwrap();

-        // See if an MDN is requested from the other side
-        if !self.decrypting_failed && !self.parts.is_empty() {
-            if let Some(ref dn_to_addr) =
-                self.parse_first_addr(HeaderDef::ChatDispositionNotificationTo)
-            {
-                if let Some(ref from_addr) = self.parse_first_addr(HeaderDef::From_) {
-                    if compare_addrs(from_addr, dn_to_addr) {
-                        if let Some(part) = self.parts.last_mut() {
-                            part.param.set_int(Param::WantsMdn, 1);
+                    if let Some(dn_to_addr) = addrs.first() {
+                        if let Some(from_field) = self.get(HeaderDef::From_) {
+                            let from_addrs = mailparse::addrparse(&from_field).unwrap();
+
+                            if let Some(from_addr) = from_addrs.first() {
+                                if compare_addrs(from_addr, dn_to_addr) {
+                                    if let Some(part_4) = self.get_last_nonmeta_mut() {
+                                        part_4.param.set_int(Param::WantsMdn, 1);
+                                    }
+                                }
+                            }
                        }
                    }
                }
            }
        }

-        // If there were no parts, especially a non-DC mail user may
-        // just have send a message in the subject with an empty body.
-        // Besides, we want to show something in case our incoming-processing
-        // failed to properly handle an incoming message.
-        if self.parts.is_empty() && self.reports.is_empty() {
+        // Cleanup - and try to create at least an empty part if there are no parts yet
+        if self.get_last_nonmeta().is_none() && self.reports.is_empty() {
            let mut part = Part::default();
            part.typ = Viewtype::Text;

@@ -346,6 +353,14 @@ impl<'a> MimeParser<'a> {
        AvatarAction::None
    }

+    pub fn get_last_nonmeta(&self) -> Option<&Part> {
+        self.parts.iter().rev().find(|part| !part.is_meta)
+    }
+
+    pub fn get_last_nonmeta_mut(&mut self) -> Option<&mut Part> {
+        self.parts.iter_mut().rev().find(|part| !part.is_meta)
+    }
+
    pub fn was_encrypted(&self) -> bool {
        !self.signatures.is_empty()
    }
@@ -373,20 +388,6 @@ impl<'a> MimeParser<'a> {
        self.header.get(&headerdef.get_headername())
    }

-    fn parse_first_addr(&self, headerdef: HeaderDef) -> Option<MailAddr> {
-        if let Some(value) = self.get(headerdef.clone()) {
-            match mailparse::addrparse(&value) {
-                Ok(ref addrs) => {
-                    return addrs.first().cloned();
-                }
-                Err(err) => {
-                    warn!(self.context, "header {} parse error: {:?}", headerdef, err);
-                }
-            }
-        }
-        None
-    }
-
    fn parse_mime_recursive(&mut self, mail: &mailparse::ParsedMail<'_>) -> Result<bool> {
        if mail.ctype.params.get("protected-headers").is_some() {
            if mail.ctype.mimetype == "text/rfc822-headers" {
@@ -576,11 +577,12 @@ impl<'a> MimeParser<'a> {
                        }
                    };

-                    let (simplified_txt, is_forwarded) = if decoded_data.is_empty() {
-                        ("".into(), false)
+                    let mut simplifier = Simplify::new();
+                    let simplified_txt = if decoded_data.is_empty() {
+                        "".into()
                    } else {
                        let is_html = mime_type == mime::TEXT_HTML;
-                        simplify(&decoded_data, is_html, self.has_chat_version())
+                        simplifier.simplify(&decoded_data, is_html, self.has_chat_version())
                    };

                    if !simplified_txt.is_empty() {
@@ -592,7 +594,7 @@ impl<'a> MimeParser<'a> {
                        self.do_add_single_part(part);
                    }

-                    if is_forwarded {
+                    if simplifier.is_forwarded {
                        self.is_forwarded = true;
                    }
                }
@@ -724,6 +726,11 @@ impl<'a> MimeParser<'a> {
    }

    fn process_report(&self, report: &mailparse::ParsedMail<'_>) -> Result<Option<Report>> {
+        // to get a clear functionality, do not show incoming MDNs if the options is disabled
+        if !self.mdns_enabled {
+            return Ok(None);
+        }
+
        // parse as mailheaders
        let report_body = report.subparts[1].get_body_raw()?;
        let (report_fields, _) = mailparse::parse_headers(&report_body)?;
@@ -742,46 +749,33 @@ impl<'a> MimeParser<'a> {
                }));
            }
        }
-        warn!(
-            self.context,
-            "ignoring unknown disposition-notification, Message-Id: {:?}",
-            report_fields.get_first_value("Message-ID").ok()
-        );

        Ok(None)
    }

-    // Handle reports (only MDNs for now)
+    // Handle reports (mainly MDNs)
    pub fn handle_reports(
        &self,
        from_id: u32,
        sent_timestamp: i64,
+        rr_event_to_send: &mut Vec<(u32, MsgId)>,
        server_folder: impl AsRef<str>,
        server_uid: u32,
    ) {
-        if self.reports.is_empty() {
-            return;
-        }
-        // If a user disabled MDNs we do not show pending incoming ones anymore
-        // but we do want them to potentially get moved from the INBOX still.
-        let mdns_enabled = self.context.get_config_bool(Config::MdnsEnabled);
-
        for report in &self.reports {
-            let mut mdn_recognized = false;
+            let mut mdn_consumed = false;

-            if mdns_enabled {
-                if let Some((chat_id, msg_id)) = message::mdn_from_ext(
-                    self.context,
-                    from_id,
-                    &report.original_message_id,
-                    sent_timestamp,
-                ) {
-                    self.context.call_cb(Event::MsgRead { chat_id, msg_id });
-                    mdn_recognized = true;
-                }
+            if let Some((chat_id, msg_id)) = message::mdn_from_ext(
+                self.context,
+                from_id,
+                &report.original_message_id,
+                sent_timestamp,
+            ) {
+                rr_event_to_send.push((chat_id, msg_id));
+                mdn_consumed = true;
            }

-            if self.has_chat_version() || mdn_recognized || !mdns_enabled {
+            if self.has_chat_version() || mdn_consumed {
                let mut param = Params::new();
                param.set(Param::ServerFolder, server_folder.as_ref());
                param.set_int(Param::ServerUid, server_uid as i32);
@@ -874,6 +868,7 @@ fn is_known(key: &str) -> bool {
 #[derive(Debug, Default, Clone)]
 pub struct Part {
    pub typ: Viewtype,
+    pub is_meta: bool,
    pub mimetype: Option<Mime>,
    pub msg: String,
    pub msg_raw: Option<String>,
@@ -1115,26 +1110,6 @@ mod tests {
        );
    }

-    #[test]
-    fn test_parse_first_addr() {
-        let context = dummy_context();
-        let raw = b"From: hello@one.org, world@two.org\n\
-                    Chat-Disposition-Notification-To: wrong
-                    Content-Type: text/plain;
-                    Chat-Version: 1.0\n\
-                    \n\
-                    test1\n\
-                    \x00";
-
-        let mimeparser = MimeParser::from_bytes(&context.ctx, &raw[..]).unwrap();
-
-        let of = mimeparser.parse_first_addr(HeaderDef::From_).unwrap();
-        assert_eq!(of, mailparse::addrparse("hello@one.org").unwrap()[0]);
-
-        let of = mimeparser.parse_first_addr(HeaderDef::ChatDispositionNotificationTo);
-        assert!(of.is_none());
-    }
-
    #[test]
    fn test_mimeparser_with_context() {
        let context = dummy_context();
--- a/src/peerstate.rs
+++ b/src/peerstate.rs
@@ -417,7 +417,7 @@ impl<'a> Peerstate<'a> {
                    &self.addr,
                ],
            )?;
-            reset_gossiped_timestamp(self.context, 0)?;
+            reset_gossiped_timestamp(self.context, 0);
        } else if self.to_save == Some(ToSave::Timestamps) {
            sql::execute(
                self.context,
--- a/src/pgp.rs
+++ b/src/pgp.rs
@@ -16,7 +16,7 @@ use pgp::types::{
 };
 use rand::{thread_rng, CryptoRng, Rng};

-use crate::error::Result;
+use crate::error::Error;
 use crate::key::*;
 use crate::keyring::*;

@@ -88,7 +88,9 @@ impl<'a> PublicKeyTrait for SignedPublicKeyOrSubkey<'a> {
 /// Split data from PGP Armored Data as defined in https://tools.ietf.org/html/rfc4880#section-6.2.
 ///
 /// Returns (type, headers, base64 encoded body).
-pub fn split_armored_data(buf: &[u8]) -> Result<(BlockType, BTreeMap<String, String>, Vec<u8>)> {
+pub fn split_armored_data(
+    buf: &[u8],
+) -> Result<(BlockType, BTreeMap<String, String>, Vec<u8>), Error> {
    use std::io::Read;

    let cursor = Cursor::new(buf);
@@ -192,7 +194,7 @@ pub fn pk_encrypt(
    plain: &[u8],
    public_keys_for_encryption: &Keyring,
    private_key_for_signing: Option<&Key>,
-) -> Result<String> {
+) -> Result<String, Error> {
    let lit_msg = Message::new_literal_bytes("", plain);
    let pkeys: Vec<SignedPublicKeyOrSubkey> = public_keys_for_encryption
        .keys()
@@ -234,7 +236,7 @@ pub fn pk_decrypt(
    private_keys_for_decryption: &Keyring,
    public_keys_for_validation: &Keyring,
    ret_signature_fingerprints: Option<&mut HashSet<String>>,
-) -> Result<Vec<u8>> {
+) -> Result<Vec<u8>, Error> {
    let (msg, _) = Message::from_armor_single(Cursor::new(ctext))?;
    let skeys: Vec<&SignedSecretKey> = private_keys_for_decryption
        .keys()
@@ -246,7 +248,7 @@ pub fn pk_decrypt(
        .collect();

    let (decryptor, _) = msg.decrypt(|| "".into(), || "".into(), &skeys[..])?;
-    let msgs = decryptor.collect::<pgp::errors::Result<Vec<_>>>()?;
+    let msgs = decryptor.collect::<Result<Vec<_>, _>>()?;
    ensure!(!msgs.is_empty(), "No valid messages found");

    let dec_msg = &msgs[0];
@@ -278,7 +280,7 @@ pub fn pk_decrypt(
 }

 /// Symmetric encryption.
-pub fn symm_encrypt(passphrase: &str, plain: &[u8]) -> Result<String> {
+pub fn symm_encrypt(passphrase: &str, plain: &[u8]) -> Result<String, Error> {
    let mut rng = thread_rng();
    let lit_msg = Message::new_literal_bytes("", plain);

@@ -295,11 +297,11 @@ pub fn symm_encrypt(passphrase: &str, plain: &[u8]) -> Result<String> {
 pub fn symm_decrypt<T: std::io::Read + std::io::Seek>(
    passphrase: &str,
    ctext: T,
-) -> Result<Vec<u8>> {
+) -> Result<Vec<u8>, Error> {
    let (enc_msg, _) = Message::from_armor_single(ctext)?;
    let decryptor = enc_msg.decrypt_with_password(|| passphrase.into())?;

-    let msgs = decryptor.collect::<pgp::errors::Result<Vec<_>>>()?;
+    let msgs = decryptor.collect::<Result<Vec<_>, _>>()?;
    ensure!(!msgs.is_empty(), "No valid messages found");

    match msgs[0].get_content()? {
--- a/src/smtp/send.rs
+++ b/src/smtp/send.rs
@@ -1,16 +1,11 @@
 //! # SMTP message sending

-use std::time::Duration;
-
 use super::Smtp;
 use async_smtp::*;

 use crate::context::Context;
 use crate::events::Event;

-/// SMTP send times out after 15 minutes
-const SEND_TIMEOUT: u64 = 15 * 60;
-
 pub type Result<T> = std::result::Result<T, Error>;

 #[derive(Debug, Fail)]
@@ -21,14 +16,6 @@ pub enum Error {
    SendError(#[cause] async_smtp::smtp::error::Error),
    #[fail(display = "SMTP has no transport")]
    NoTransport,
-    #[fail(display = "SMTP send timed out")]
-    SendTimeout(#[cause] async_std::future::TimeoutError),
-}
-
-impl From<async_std::future::TimeoutError> for Error {
-    fn from(err: async_std::future::TimeoutError) -> Error {
-        Error::SendTimeout(err)
-    }
 }

 impl Smtp {
@@ -57,17 +44,14 @@ impl Smtp {
            message,
        );
        if let Some(ref mut transport) = self.transport {
-            let res =
-                async_std::future::timeout(Duration::from_secs(SEND_TIMEOUT), transport.send(mail))
-                    .await?
-                    .map_err(Error::SendError);
+            transport.send(mail).await.map_err(Error::SendError)?;

-            res.map(|_response| {
-                context.call_cb(Event::SmtpMessageSent(format!(
-                    "Message len={} was smtp-sent to {}",
-                    message_len, recipients_display
-                )));
-            })
+            context.call_cb(Event::SmtpMessageSent(format!(
+                "Message len={} was smtp-sent to {}",
+                message_len, recipients_display
+            )));
+
+            Ok(())
        } else {
            warn!(
                context,
--- a/src/sql.rs
+++ b/src/sql.rs
@@ -544,7 +544,7 @@ fn open(
        // --------------------------------------------------------------------

        let mut dbversion = dbversion_before_update;
-        let mut recalc_fingerprints = false;
+        let mut recalc_fingerprints = 0;
        let mut update_icons = false;

        if dbversion < 1 {
@@ -687,7 +687,7 @@ fn open(
                "CREATE INDEX acpeerstates_index4 ON acpeerstates (gossip_key_fingerprint);",
                params![],
            )?;
-            recalc_fingerprints = true;
+            recalc_fingerprints = 1;
            dbversion = 34;
            sql.set_raw_config_int(context, "dbversion", 34)?;
        }
@@ -872,7 +872,7 @@ fn open(
        // (the structure is complete now and all objects are usable)
        // --------------------------------------------------------------------

-        if recalc_fingerprints {
+        if 0 != recalc_fingerprints {
            info!(context, "[migration] recalc fingerprints");
            sql.query_map(
                "SELECT addr FROM acpeerstates;",
--- a/src/wrapmime.rs
+++ b/src/wrapmime.rs
@@ -0,0 +1,59 @@
+use mailparse::ParsedMail;
+
+use crate::error::Error;
+
+pub fn parse_message_id(message_id: &[u8]) -> Result<String, Error> {
+    let value = std::str::from_utf8(message_id)?;
+    let addrs = mailparse::addrparse(value)
+        .map_err(|err| format_err!("failed to parse message id {:?}", err))?;
+
+    if let Some(info) = addrs.extract_single_info() {
+        return Ok(info.addr);
+    }
+
+    bail!("could not parse message_id: {}", value);
+}
+
+/// Returns a reference to the encrypted payload and validates the autocrypt structure.
+pub fn get_autocrypt_mime<'a, 'b>(mail: &'a ParsedMail<'b>) -> Result<&'a ParsedMail<'b>, Error> {
+    ensure!(
+        mail.ctype.mimetype == "multipart/encrypted",
+        "Not a multipart/encrypted message: {}",
+        mail.ctype.mimetype
+    );
+    ensure!(
+        mail.subparts.len() == 2,
+        "Invalid Autocrypt Level 1 Mime Parts"
+    );
+
+    ensure!(
+        mail.subparts[0].ctype.mimetype == "application/pgp-encrypted",
+        "Invalid Autocrypt Level 1 version part: {:?}",
+        mail.subparts[0].ctype,
+    );
+
+    ensure!(
+        mail.subparts[1].ctype.mimetype == "application/octet-stream",
+        "Invalid Autocrypt Level 1 encrypted part: {:?}",
+        mail.subparts[1].ctype
+    );
+
+    Ok(&mail.subparts[1])
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse_message_id() {
+        assert_eq!(
+            parse_message_id(b"Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org").unwrap(),
+            "Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org"
+        );
+        assert_eq!(
+            parse_message_id(b"<Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org>").unwrap(),
+            "Mr.PRUe8HJBoaO.3whNvLCMFU0@testrun.org"
+        );
+    }
+}
--- a/test-data/image/avatar1000x1000.jpg
+++ b/test-data/image/avatar1000x1000.jpg
Author	SHA1	Message	Date
holger krekel	e9c0492fbd	fix off-by-one error and fix wrong flag corrections	2019-12-13 11:08:29 +01:00
holger krekel	72e128db2e	(experimental) special-case nauta provider to try make it work	2019-12-13 11:08:29 +01:00