cargo-fmt only

make dc_str_from_clist safe and return a string instead of c-string -- this allows to remove some unsafe and now unneccessary cleanup code
target comments of @hpk42
2026-04-05 06:52:10 +03:00 · 2019-10-10 01:33:15 +02:00 · 2019-10-10 01:33:09 +02:00 · 2019-10-10 00:29:52 +02:00 · 2019-10-10 00:29:52 +02:00 · 2019-10-10 00:29:52 +02:00
15 changed files with 476 additions and 945 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -57,10 +57,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "arrayvec"
-version = "0.4.11"
+version = "0.4.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nodrop 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -88,7 +88,7 @@ version = "0.3.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "backtrace-sys 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -139,7 +139,7 @@ version = "0.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "arrayvec 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
 "constant_time_eq 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -226,7 +226,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -247,7 +247,7 @@ dependencies = [
 "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -276,7 +276,7 @@ dependencies = [

 [[package]]
 name = "cfg-if"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@@ -301,7 +301,7 @@ dependencies = [

 [[package]]
 name = "circular"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@@ -345,7 +345,7 @@ dependencies = [
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "publicsuffix 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
 "try_from 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -375,7 +375,7 @@ name = "crc32fast"
 version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -392,8 +392,8 @@ name = "crossbeam-epoch"
 version = "0.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "arrayvec 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "memoffset 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -413,13 +413,13 @@ name = "crossbeam-utils"
 version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "ctor"
-version = "0.1.11"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -435,7 +435,7 @@ dependencies = [
 "clear_on_drop 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "subtle 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "subtle 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -500,14 +500,14 @@ dependencies = [
 "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "jetscii 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lettre 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lettre 0.9.2 (git+https://github.com/deltachat/lettre)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "mmime 0.1.2",
 "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-derive 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "percent-encoding 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "pgp 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pgp 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "pretty_assertions 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "pretty_env_logger 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "proptest 0.9.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -516,11 +516,11 @@ dependencies = [
 "r2d2_sqlite 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "reqwest 0.9.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "reqwest 0.9.21 (registry+https://github.com/rust-lang/crates.io-index)",
 "rusqlite 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "rustyline 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "strum 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -633,13 +633,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "ed25519-dalek"
-version = "1.0.0-pre.1"
+version = "1.0.0-pre.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "clear_on_drop 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "curve25519-dalek 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -653,7 +654,7 @@ name = "encoding_rs"
 version = "0.8.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -743,12 +744,13 @@ dependencies = [

 [[package]]
 name = "flate2"
-version = "1.0.11"
+version = "1.0.12"
 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)",
 "crc32fast 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "miniz_oxide 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "miniz_oxide 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -815,7 +817,7 @@ name = "getrandom"
 version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -860,6 +862,11 @@ name = "hex"
 version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
+name = "hex"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "hostname"
 version = "0.1.5"
@@ -931,7 +938,7 @@ dependencies = [
 "http 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)",
 "http-body 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "httparse 1.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "net2 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -941,9 +948,9 @@ dependencies = [
 "tokio-buf 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 "want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1025,11 +1032,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "iovec"
-version = "0.1.2"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1072,7 +1078,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "lettre"
 version = "0.9.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/deltachat/lettre#aeec999c27a70870e4b7b149e45f24188c1ff351"
 dependencies = [
 "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "bufstream 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1080,10 +1086,10 @@ dependencies = [
 "hostname 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1091,8 +1097,8 @@ name = "lexical-core"
 version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "arrayvec 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1118,15 +1124,6 @@ name = "linked-hash-map"
 version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
-name = "lock_api"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "owning_ref 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "lock_api"
 version = "0.2.0"
@@ -1148,7 +1145,7 @@ name = "log"
 version = "0.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1220,7 +1217,7 @@ dependencies = [

 [[package]]
 name = "miniz_oxide"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "adler32 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1233,7 +1230,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1275,9 +1272,9 @@ dependencies = [
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl 0.10.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl 0.10.25 (registry+https://github.com/rust-lang/crates.io-index)",
 "openssl-probe 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.50 (registry+https://github.com/rust-lang/crates.io-index)",
 "schannel 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)",
 "security-framework 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "security-framework-sys 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1289,7 +1286,7 @@ name = "net2"
 version = "0.2.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -1301,14 +1298,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "nodrop"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@@ -1405,15 +1402,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
 name = "openssl"
-version = "0.10.24"
+version = "0.10.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "bitflags 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
- "openssl-sys 0.9.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "openssl-sys 0.9.50 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1431,7 +1428,7 @@ dependencies = [

 [[package]]
 name = "openssl-sys"
-version = "0.9.49"
+version = "0.9.50"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1458,29 +1455,12 @@ dependencies = [
 "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "owning_ref"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "packed_simd"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "parking_lot"
-version = "0.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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+ "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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@@ -1535,7 +1503,7 @@ name = "parking_lot_core"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1556,7 +1524,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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@@ -1570,17 +1538,17 @@ dependencies = [
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- "ed25519-dalek 1.0.0-pre.1 (registry+https://github.com/rust-lang/crates.io-index)",
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- "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
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- "ctor 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -1641,7 +1609,7 @@ dependencies = [

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- "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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 [[package]]
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- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
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- "tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
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- "subtle 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "subtle 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2096,11 +2064,6 @@ 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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@@ -2152,14 +2115,14 @@ name = "serde_derive"
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 dependencies = [
- "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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- "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2247,11 +2210,6 @@ name = "smallvec"
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-[[package]]
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 [[package]]
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 [[package]]
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- "proc-macro2 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
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- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
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@@ -2480,7 +2438,7 @@ dependencies = [

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 [[package]]
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@@ -2901,7 +2859,7 @@ dependencies = [
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 "checksum scheduled-thread-pool 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bd07742e081ff6c077f5f6b283f12f32b9e7cc765b316160d66289b74546fbb3"
-"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
 "checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum security-framework 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "eee63d0f4a9ec776eeb30e220f0bc1e092c3ad744b2a379e3993070364d3adc2"
 "checksum security-framework-sys 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9636f8989cbf61385ae4824b98c1aaa54c994d7d8b41f11c601ed799f0549a56"
@@ -3079,7 +3033,7 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "9796c9b7ba2ffe7a9ce53c2287dfc48080f4b2b362fcc245a259b3a7201119dd"
 "checksum serde_derive 1.0.101 (registry+https://github.com/rust-lang/crates.io-index)" = "4b133a43a1ecd55d4086bd5b4dc6c1751c68b1bfbeba7a5040442022c7e7c02e"
-"checksum serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)" = "051c49229f282f7c6f3813f8286cc1e3323e8051823fce42c7ea80fe13521704"
+"checksum serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)" = "2f72eb2a68a7dc3f9a691bfda9305a1c017a6215e5a4545c258500d2099a37c2"
 "checksum serde_urlencoded 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "642dd69105886af2efd227f75a520ec9b44a820d65bc133a9131f7d229fd165a"
 "checksum sha-1 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "23962131a91661d643c98940b20fcaffe62d776a823247be80a48fcb8b6fce68"
 "checksum sha2 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b4d8bfd0e469f417657573d8451fb33d16cfe0989359b93baf3a1ffc639543d"
@@ -3088,14 +3042,13 @@ dependencies = [
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum slice-deque 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "ffddf594f5f597f63533d897427a570dbaa9feabaaa06595b74b71b7014507d7"
 "checksum smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "ab606a9c5e214920bb66c458cd7be8ef094f813f20fe77a54cc7dbfff220d4b7"
-"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7f3eb36b47e512f8f1c9e3d10c2c1965bc992bd9cdb024fa581e2194501c83d3"
 "checksum stream-cipher 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8131256a5896cabcf5eb04f4d6dacbe1aefda854b0d9896e09cb58829ec5638c"
 "checksum string 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d24114bfcceb867ca7f71a0d3fe45d45619ec47a6fbfa98cb14e14250bfa5d6d"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum strum 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6138f8f88a16d90134763314e3fc76fa3ed6a7db4725d6acf9a3ef95a3188d22"
 "checksum strum_macros 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0054a7df764039a6cd8592b9de84be4bec368ff081d203a7d5371cbfa8e65c81"
-"checksum subtle 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "01f40907d9ffc762709e4ff3eb4a6f6b41b650375a3f09ac92b641942b7fb082"
+"checksum subtle 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ab3af2eb31c42e8f0ccf43548232556c42737e01a96db6e1777b0be108e79799"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
 "checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
 "checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
@@ -3114,10 +3067,10 @@ dependencies = [
 "checksum tokio-current-thread 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "d16217cad7f1b840c5a97dfb3c43b0c871fef423a6e8d2118c604e843662a443"
 "checksum tokio-executor 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "0f27ee0e6db01c5f0b2973824547ce7e637b2ed79b891a9677b0de9bd532b6ac"
 "checksum tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5090db468dad16e1a7a54c8c67280c5e4b544f3d3e018f0b913b400261f85926"
-"checksum tokio-reactor 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6af16bfac7e112bea8b0442542161bfc41cbfa4466b580bdda7d18cb88b911ce"
+"checksum tokio-reactor 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "c56391be9805bc80163151c0b9e5164ee64f4b0200962c346fea12773158f22d"
 "checksum tokio-sync 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2162248ff317e2bc713b261f242b69dbb838b85248ed20bb21df56d60ea4cae7"
 "checksum tokio-tcp 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1d14b10654be682ac43efee27401d792507e30fd8d26389e1da3b185de2e4119"
-"checksum tokio-threadpool 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "90ca01319dea1e376a001e8dc192d42ebde6dd532532a5bad988ac37db365b19"
+"checksum tokio-threadpool 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd2c6a3885302581f4401c82af70d792bb9df1700e7437b0aeb4ada94d5388c"
 "checksum tokio-timer 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "f2106812d500ed25a4f38235b9cae8f78a09edf43203e16e59c3b769a342a60e"
 "checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
 "checksum traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "efd1f82c56340fdf16f2a953d7bda4f8fdffba13d93b00844c25572110b26079"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ deltachat_derive = { path = "./deltachat_derive" }
 mmime = { version = "0.1.2", path = "./mmime" }

 libc = "0.2.51"
-pgp = { version = "0.2", default-features = false }
+pgp = "0.2.3"
 hex = "0.3.2"
 sha2 = "0.8.0"
 rand = "0.6.5"
@@ -19,7 +19,7 @@ reqwest = "0.9.15"
 num-derive = "0.2.5"
 num-traits = "0.2.6"
 native-tls = "0.2.3"
-lettre = "0.9.0"
+lettre = { git = "https://github.com/deltachat/lettre" }
 imap = { git = "https://github.com/jonhoo/rust-imap", rev = "281d2eb8ab50dc656ceff2ae749ca5045f334e15" }
 base64 = "0.10"
 charset = "0.1"
--- a/ci_scripts/ci_upload.sh
+++ b/ci_scripts/ci_upload.sh
@@ -22,6 +22,7 @@ rsync -avz \
  delta@py.delta.chat:build/${BRANCH}

 # C docs to c.delta.chat
+ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null delta@c.delta.chat mkdir -p build-c/${BRANCH}
 rsync -avz \
  -e "ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" \
  "$DOXYDOCDIR/html/" \
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -78,8 +78,7 @@ typedef struct _dc_provider dc_provider_t;
 *
 * The example above uses "pthreads",
 * however, you can also use anything else for thread handling.
- * NB: The deltachat-core library itself does not create any threads on its own,
- * however, functions, unless stated otherwise, are thread-safe.
+ * All deltachat-core-functions, unless stated otherwise, are thread-safe.
 *
 * After that you can  **define and open a database.**
 * The database is a normal sqlite-file and is created as needed:
@@ -135,7 +134,7 @@ typedef struct _dc_provider dc_provider_t;
 *
 *     printf("Message %i: %s\n", i+1, text);
 *
- *     free(text);
+ *     dc_str_unref(text);
 *     dc_msg_unref(msg);
 * }
 * dc_array_unref(msglist);
@@ -321,7 +320,7 @@ int             dc_is_open                   (const dc_context_t* context);
 * @memberof dc_context_t
 * @param context The context object as created by dc_context_new().
 * @return Blob directory associated with the context object, empty string if unset or on errors. NULL is never returned.
- *     The returned string must be free()'d.
+ *     The returned string must be released using dc_str_unref().
 */
 char*           dc_get_blobdir               (const dc_context_t* context);

@@ -397,7 +396,7 @@ int             dc_set_config                (dc_context_t* context, const char*
 * @param context The context object as created by dc_context_new(). For querying system values, this can be NULL.
 * @param key The key to query.
 * @return Returns current value of "key", if "key" is unset, the default
- *     value is returned.  The returned value must be free()'d, NULL is never
+ *     value is returned.  The returned value must be released using dc_str_unref(), NULL is never
 *     returned.  If there is an error an empty string will be returned.
 */
 char*           dc_get_config                (dc_context_t* context, const char* key);
@@ -407,12 +406,13 @@ char*           dc_get_config                (dc_context_t* context, const char*
 *
 * The function will emit warnings if it returns an error state. 
 *
+ * @memberof dc_context_t
 * @param context The context object
 * @param stock_id   the integer id of the stock message (DC_STR_*)
 * @param stock_msg  the message to be used 
 * @return int (==0 on error, 1 on success)
 */
-int             dc_set_stock_translation(dc_context_t* context, uint32_t, const char* value);
+int             dc_set_stock_translation(dc_context_t* context, uint32_t stock_id, const char* stock_msg);


 /**
@@ -427,7 +427,7 @@ int             dc_set_stock_translation(dc_context_t* context, uint32_t, const
 *
 * @memberof dc_context_t
 * @param context The context as created by dc_context_new().
- * @return String which must be free()'d after usage.  Never returns NULL.
+ * @return String which must be released using dc_str_unref() after usage.  Never returns NULL.
 */
 char*           dc_get_info                  (dc_context_t* context);

@@ -458,6 +458,7 @@ char*           dc_get_info                  (dc_context_t* context);
 *     `https://localhost:PORT/PATH`, `urn:ietf:wg:oauth:2.0:oob`
 *     (the latter just displays the code the user can copy+paste then)
 * @return URL that can be opened in the browser to start OAuth2.
+ *     Returned strings must be released using dc_str_unref().
 *     If OAuth2 is not possible for the given e-mail-address, NULL is returned.
 */
 char*           dc_get_oauth2_url            (dc_context_t* context, const char* addr, const char* redirect_uri);
@@ -706,6 +707,7 @@ void            dc_perform_mvbox_idle        (dc_context_t* context);
 */
 void            dc_interrupt_mvbox_idle      (dc_context_t* context);

+
 /**
 * Execute pending sentbox-jobs.
 * This function and dc_perform_sentbox_fetch() and dc_perform_sentbox_idle()
@@ -1477,7 +1479,7 @@ int             dc_set_chat_profile_image    (dc_context_t* context, uint32_t ch
 * @memberof dc_context_t
 * @param context The context object as created by dc_context_new().
 * @param msg_id The message id for which information should be generated
- * @return Text string, must be free()'d after usage
+ * @return Text string, must be released using dc_str_unref() after usage
 */
 char*           dc_get_msg_info              (dc_context_t* context, uint32_t msg_id);

@@ -1491,7 +1493,7 @@ char*           dc_get_msg_info              (dc_context_t* context, uint32_t ms
 * @memberof dc_context_t
 * @param context The context object as created by dc_context_new().
 * @param msg_id The message id, must be the id of an incoming message.
- * @return Raw headers as a multi-line string, must be free()'d after usage.
+ * @return Raw headers as a multi-line string, must be released using dc_str_unref() after usage.
 *     Returns NULL if there are no headers saved for the given message,
 *     eg. because of save_mime_headers is not set
 *     or the message is not incoming.
@@ -1732,7 +1734,7 @@ void            dc_block_contact             (dc_context_t* context, uint32_t co
 * @memberof dc_context_t
 * @param context The context object as created by dc_context_new().
 * @param contact_id ID of the contact to get the encryption info for.
- * @return Multi-line text, must be free()'d after usage.
+ * @return Multi-line text, must be released using dc_str_unref() after usage.
 */
 char*           dc_get_contact_encrinfo      (dc_context_t* context, uint32_t contact_id);

@@ -1868,7 +1870,8 @@ void            dc_imex                      (dc_context_t* context, int what, c
 * @memberof dc_context_t
 * @param context The context as created by dc_context_new().
 * @param dir Directory to search backups in.
- * @return String with the backup file, typically given to dc_imex(), returned strings must be free()'d.
+ * @return String with the backup file, typically given to dc_imex(),
+ *     returned strings must be released using dc_str_unref().
 *     The function returns NULL if no backup was found.
 */
 char*           dc_imex_has_backup           (dc_context_t* context, const char* dir);
@@ -1916,7 +1919,7 @@ char*           dc_imex_has_backup           (dc_context_t* context, const char*
 *
 * @memberof dc_context_t
 * @param context The context object.
- * @return The setup code. Must be free()'d after usage.
+ * @return The setup code. Must be released using dc_str_unref() after usage.
 *     On errors, eg. if the message could not be sent, NULL is returned.
 */
 char*           dc_initiate_key_transfer     (dc_context_t* context);
@@ -2021,7 +2024,7 @@ dc_lot_t*       dc_check_qr                  (dc_context_t* context, const char*
 *     If set to 0, the setup-Verified-contact-protocol is offered in the QR code.
 * @return Text that should go to the QR code,
 *     On errors, an empty QR code is returned, NULL is never returned.
- *     The returned string must be free()'d after usage.
+ *     The returned string must be released using dc_str_unref() after usage.
 */
 char*           dc_get_securejoin_qr         (dc_context_t* context, uint32_t chat_id);

@@ -2191,6 +2194,21 @@ dc_array_t* dc_get_locations                (dc_context_t* context, uint32_t cha
 void        dc_delete_all_locations         (dc_context_t* context);


+/**
+ * Release a string returned by another deltachat-core function.
+ * - Strings returned by any deltachat-core-function
+ *   MUST NOT be released by the standard free() function;
+ *   always use dc_str_unref() for this purpose.
+ * - dc_str_unref() MUST NOT be called for strings not returned by deltachat-core.
+ * - dc_str_unref() MUST NOT be called for other objectes returned by deltachat-core.
+ *
+ * @memberof dc_context_t
+ * @param str The string to release.
+ * @return None.
+ */
+void dc_str_unref (char* str);
+
+
 /**
 * @class dc_array_t
 *
@@ -2331,7 +2349,7 @@ uint32_t         dc_array_get_msg_id         (const dc_array_t* array, size_t in
 * @param index Index of the item. Must be between 0 and dc_array_get_cnt()-1.
 * @return Marker-character of the item at the given index.
 *     NULL if there is no marker-character bound to the given item.
- *     The returned value must be free()'d after usage.
+ *     The returned value must be released using dc_str_unref() after usage.
 */
 char*            dc_array_get_marker         (const dc_array_t* array, size_t index);

@@ -2586,7 +2604,7 @@ int             dc_chat_get_type             (const dc_chat_t* chat);
 *
 * @memberof dc_chat_t
 * @param chat The chat object.
- * @return Chat name as a string. Must be free()'d after usage. Never NULL.
+ * @return Chat name as a string. Must be released using dc_str_unref() after usage. Never NULL.
 */
 char*           dc_chat_get_name             (const dc_chat_t* chat);

@@ -2599,7 +2617,7 @@ char*           dc_chat_get_name             (const dc_chat_t* chat);
 *
 * @memberof dc_chat_t
 * @param chat The chat object to calulate the subtitle for.
- * @return Subtitle as a string. Must be free()'d after usage. Never NULL.
+ * @return Subtitle as a string. Must be released using dc_str_unref() after usage. Never NULL.
 */
 char*           dc_chat_get_subtitle         (const dc_chat_t* chat);

@@ -2615,7 +2633,7 @@ char*           dc_chat_get_subtitle         (const dc_chat_t* chat);
 * @param chat The chat object.
 * @return Path and file if the profile image, if any.
 *     NULL otherwise.
- *     Must be free()'d after usage.
+ *     Must be released using dc_str_unref() after usage.
 */
 char*           dc_chat_get_profile_image    (const dc_chat_t* chat);

@@ -2919,7 +2937,7 @@ int64_t          dc_msg_get_sort_timestamp     (const dc_msg_t* msg);
 *
 * @memberof dc_msg_t
 * @param msg The message object.
- * @return Message text. The result must be free()'d. Never returns NULL.
+ * @return Message text. The result must be released using dc_str_unref(). Never returns NULL.
 */
 char*           dc_msg_get_text               (const dc_msg_t* msg);

@@ -2933,9 +2951,9 @@ char*           dc_msg_get_text               (const dc_msg_t* msg);
 *
 * @memberof dc_msg_t
 * @param msg The message object.
- * @return Full path, file name and extension of the file associated with the
- *     message.  If there is no file associated with the message, an emtpy
- *     string is returned.  NULL is never returned and the returned value must be free()'d.
+ * @return Full path, file name and extension of the file associated with the message.
+ *     If there is no file associated with the message, an emtpy string is returned.
+ *     NULL is never returned and the returned value must be released using dc_str_unref().
 */
 char*           dc_msg_get_file               (const dc_msg_t* msg);

@@ -2948,7 +2966,7 @@ char*           dc_msg_get_file               (const dc_msg_t* msg);
 * @param msg The message object.
 * @return Base file name plus extension without part.  If there is no file
 *     associated with the message, an empty string is returned.  The returned
- *     value must be free()'d.
+ *     value must be released using dc_str_unref().
 */
 char*           dc_msg_get_filename           (const dc_msg_t* msg);

@@ -2960,7 +2978,8 @@ char*           dc_msg_get_filename           (const dc_msg_t* msg);
 *
 * @memberof dc_msg_t
 * @param msg The message object.
- * @return String containing the mime type. Must be free()'d after usage. NULL is never returned.
+ * @return String containing the mime type.
+ *     Must be released using dc_str_unref() after usage. NULL is never returned.
 */
 char*           dc_msg_get_filemime           (const dc_msg_t* msg);

@@ -3068,7 +3087,8 @@ dc_lot_t*       dc_msg_get_summary            (const dc_msg_t* msg, const dc_cha
 * @memberof dc_msg_t
 * @param msg The message object.
 * @param approx_characters Rough length of the expected string.
- * @return A summary for the given messages. The returned string must be free()'d.
+ * @return A summary for the given messages.
+ *     The returned string must be released using dc_str_unref().
 *     Returns an empty string on errors, never returns NULL.
 */
 char*           dc_msg_get_summarytext        (const dc_msg_t* msg, int approx_characters);
@@ -3213,7 +3233,7 @@ int             dc_msg_is_setupmessage        (const dc_msg_t* msg);
 * @memberof dc_msg_t
 * @param msg The message object.
 * @return Typically, the first two digits of the setup code or an empty string if unknown.
- *     NULL is never returned. Must be free()'d when done.
+ *     NULL is never returned. Must be released using dc_str_unref() when done.
 */
 char*           dc_msg_get_setupcodebegin     (const dc_msg_t* msg);

@@ -3370,7 +3390,8 @@ uint32_t        dc_contact_get_id            (const dc_contact_t* contact);
 *
 * @memberof dc_contact_t
 * @param contact The contact object.
- * @return String with the email address, must be free()'d. Never returns NULL.
+ * @return String with the email address,
+ *     must be released using dc_str_unref(). Never returns NULL.
 */
 char*           dc_contact_get_addr          (const dc_contact_t* contact);

@@ -3384,7 +3405,8 @@ char*           dc_contact_get_addr          (const dc_contact_t* contact);
 *
 * @memberof dc_contact_t
 * @param contact The contact object.
- * @return String with the name to display, must be free()'d. Empty string if unset, never returns NULL.
+ * @return String with the name to display, must be released using dc_str_unref().
+ *     Empty string if unset, never returns NULL.
 */
 char*           dc_contact_get_name          (const dc_contact_t* contact);

@@ -3398,7 +3420,8 @@ char*           dc_contact_get_name          (const dc_contact_t* contact);
 *
 * @memberof dc_contact_t
 * @param contact The contact object.
- * @return String with the name to display, must be free()'d. Never returns NULL.
+ * @return String with the name to display, must be released using dc_str_unref().
+ *     Never returns NULL.
 */
 char*           dc_contact_get_display_name  (const dc_contact_t* contact);

@@ -3414,7 +3437,8 @@ char*           dc_contact_get_display_name  (const dc_contact_t* contact);
 *
 * @memberof dc_contact_t
 * @param contact The contact object.
- * @return Summary string, must be free()'d. Never returns NULL.
+ * @return Summary string, must be released using dc_str_unref().
+ *     Never returns NULL.
 */
 char*           dc_contact_get_name_n_addr   (const dc_contact_t* contact);

@@ -3426,7 +3450,8 @@ char*           dc_contact_get_name_n_addr   (const dc_contact_t* contact);
 *
 * @memberof dc_contact_t
 * @param contact The contact object.
- * @return String with the name to display, must be free()'d. Never returns NULL.
+ * @return String with the name to display, must be released using dc_str_unref().
+ *     Never returns NULL.
 */
 char*           dc_contact_get_first_name    (const dc_contact_t* contact);

@@ -3440,7 +3465,7 @@ char*           dc_contact_get_first_name    (const dc_contact_t* contact);
 * @param contact The contact object.
 * @return Path and file if the profile image, if any.
 *     NULL otherwise.
- *     Must be free()'d after usage.
+ *     Must be released using dc_str_unref() after usage.
 */
 char*           dc_contact_get_profile_image (const dc_contact_t* contact);

@@ -3521,7 +3546,7 @@ dc_provider_t*  dc_provider_new_from_email            (const char* email);
 *
 * @memberof dc_provider_t
 * @param provider The dc_provider_t struct.
- * @return A string which must be free()d.
+ * @return A string which must be released using dc_str_unref().
 */
 char*           dc_provider_get_overview_page         (const dc_provider_t* provider);

@@ -3533,7 +3558,7 @@ char*           dc_provider_get_overview_page         (const dc_provider_t* prov
 *
 * @memberof dc_provider_t
 * @param provider The dc_provider_t struct.
- * @return A string which must be free()d.
+ * @return A string which must be released using dc_str_unref().
 */
 char*           dc_provider_get_name                  (const dc_provider_t* provider);

@@ -3546,7 +3571,7 @@ char*           dc_provider_get_name                  (const dc_provider_t* prov
 *
 * @memberof dc_provider_t
 * @param provider The dc_provider_t struct.
- * @return A string which must be free()d.
+ * @return A string which must be released using dc_str_unref().
 */
 char*           dc_provider_get_markdown              (const dc_provider_t* provider);

@@ -3558,7 +3583,7 @@ char*           dc_provider_get_markdown              (const dc_provider_t* prov
 *
 * @memberof dc_provider_t
 * @param provider The dc_provider_t struct.
- * @return A string which must be free()d.
+ * @return A string which must be released using dc_str_unref().
 */
 char*           dc_provider_get_status_date           (const dc_provider_t* provider);

@@ -3620,7 +3645,9 @@ void            dc_lot_unref             (dc_lot_t* lot);
 *
 * @memberof dc_lot_t
 * @param lot The lot object.
- * @return A string, the string may be empty and the returned value must be free()'d. NULL if there is no such string.
+ * @return A string, the string may be empty
+ *     and the returned value must be released using dc_str_unref().
+ *     NULL if there is no such string.
 */
 char*           dc_lot_get_text1         (const dc_lot_t* lot);

@@ -3629,10 +3656,10 @@ char*           dc_lot_get_text1         (const dc_lot_t* lot);
 * Get second string. The meaning of the string is defined by the creator of the object.
 *
 * @memberof dc_lot_t
- *
 * @param lot The lot object.
- *
- * @return A string, the string may be empty and the returned value must be free()'d	. NULL if there is no such string.
+ * @return A string, the string may be empty
+ *     and the returned value must be released using dc_str_unref().
+ *     NULL if there is no such string.
 */
 char*           dc_lot_get_text2         (const dc_lot_t* lot);

@@ -3653,9 +3680,7 @@ int             dc_lot_get_text1_meaning (const dc_lot_t* lot);
 * Get the associated state. The meaning of the state is defined by the creator of the object.
 *
 * @memberof dc_lot_t
- *
 * @param lot The lot object.
- *
 * @return The state as defined by the creator of the object. 0 if there is not state or on errors.
 */
 int             dc_lot_get_state         (const dc_lot_t* lot);
@@ -3677,9 +3702,7 @@ uint32_t        dc_lot_get_id            (const dc_lot_t* lot);
 * The meaning of the timestamp is defined by the creator of the object.
 *
 * @memberof dc_lot_t
- *
 * @param lot The lot object.
- *
 * @return The timestamp as defined by the creator of the object. 0 if there is not timestamp or on errors.
 */
 int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
@@ -3879,7 +3902,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_INFO                     100
@@ -3890,7 +3913,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_SMTP_CONNECTED           101
@@ -3901,7 +3924,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_IMAP_CONNECTED           102
@@ -3911,7 +3934,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_SMTP_MESSAGE_SENT        103
@@ -3921,7 +3944,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_IMAP_MESSAGE_DELETED   104
@@ -3931,7 +3954,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_IMAP_MESSAGE_MOVED   105
@@ -3941,7 +3964,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) path name 
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_NEW_BLOB_FILE 150
@@ -3951,7 +3974,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) path name 
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_DELETED_BLOB_FILE 151
@@ -3964,7 +3987,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Warning string in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_WARNING                  300
@@ -3984,9 +4007,10 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 * in a messasge box then.
 *
 * @param data1 0
- * @param data2 (const char*) Error string, always set, never NULL. Frequent error strings are
- *     localized using #DC_EVENT_GET_STRING, however, most error strings will be in english language.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ * @param data2 (const char*) Error string, always set, never NULL.
+ *     Some error strings are taken from dc_set_stock_translation(),
+ *     however, most error strings will be in english language.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_ERROR                    400
@@ -4010,7 +4034,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 * @param data1 (int) 1=first/new network error, should be reported the user;
 *     0=subsequent network error, should be logged only
 * @param data2 (const char*) Error string, always set, never NULL.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @return 0
 */
 #define DC_EVENT_ERROR_NETWORK            401
@@ -4025,7 +4049,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 *
 * @param data1 0
 * @param data2 (const char*) Info string in english language.
- *     Must not be free()'d or modified
+ *     Must not be unref'd or modified
 *     and is valid only until the callback returns.
 * @return 0
 */
@@ -4156,7 +4180,7 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 * services.
 *
 * @param data1 (const char*) Path and file name.
- *     Must not be free()'d or modified and is valid only until the callback returns.
+ *     Must not be unref'd or modified and is valid only until the callback returns.
 * @param data2 0
 * @return 0
 */
@@ -4197,30 +4221,21 @@ int64_t          dc_lot_get_timestamp     (const dc_lot_t* lot);
 #define DC_EVENT_SECUREJOIN_JOINER_PROGRESS       2061


-// the following events are functions that should be provided by the frontends
-
-
-/**
- * (DEPRECATED, DC_EVENT_GET_STRING is not emmitted anymore.  Use
- * dc_set_stock_translation() to pre-fill translations for stock
- * messages. 
- *
- */
-#define DC_EVENT_GET_STRING               2091
-
 /**
 * @}
 */

-#define DC_EVENT_FILE_COPIED         2055 // deprecated
-#define DC_EVENT_IS_OFFLINE          2081 // deprecated
-#define DC_ERROR_SEE_STRING          0    // deprecated
-#define DC_ERROR_SELF_NOT_IN_GROUP   1    // deprecated
-#define DC_STR_SELFNOTINGRP          21   // deprecated
+
+#define DC_EVENT_FILE_COPIED         2055 // not used anymore
+#define DC_EVENT_IS_OFFLINE          2081 // not used anymore
+#define DC_EVENT_GET_STRING          2091 // not used anymore, use dc_set_stock_translation()
+#define DC_ERROR_SEE_STRING          0    // not used anymore
+#define DC_ERROR_SELF_NOT_IN_GROUP   1    // not used anymore
+#define DC_STR_SELFNOTINGRP          21   // not used anymore
 #define DC_EVENT_DATA1_IS_STRING(e)  ((e)==DC_EVENT_IMEX_FILE_WRITTEN || (e)==DC_EVENT_FILE_COPIED)
 #define DC_EVENT_DATA2_IS_STRING(e)  ((e)>=100 && (e)<=499)
-#define DC_EVENT_RETURNS_INT(e)      ((e)==DC_EVENT_IS_OFFLINE)
-#define DC_EVENT_RETURNS_STRING(e)   ((e)==DC_EVENT_GET_STRING)
+#define DC_EVENT_RETURNS_INT(e)      ((e)==DC_EVENT_IS_OFFLINE) // not used anymore
+#define DC_EVENT_RETURNS_STRING(e)   ((e)==DC_EVENT_GET_STRING) // not used anymore
 char*           dc_get_version_str           (void); // deprecated
 void            dc_array_add_id              (dc_array_t*, uint32_t); // deprecated

@@ -4325,9 +4340,6 @@ void            dc_array_add_id              (dc_array_t*, uint32_t); // depreca
 #define DC_STR_STICKER                    67
 #define DC_STR_COUNT                      67

-void dc_str_unref (char*);
-
-
 /*
 * @}
 */
--- a/mmime/src/other.rs
+++ b/mmime/src/other.rs
@@ -12,6 +12,10 @@ pub(crate) use libc::{
 };

 pub(crate) unsafe fn strcasecmp(s1: *const libc::c_char, s2: *const libc::c_char) -> libc::c_int {
+    if s1.is_null() || s2.is_null() {
+        return 1;
+    }
+
    let s1 = std::ffi::CStr::from_ptr(s1)
        .to_string_lossy()
        .to_lowercase();
@@ -30,16 +34,23 @@ pub(crate) unsafe fn strncasecmp(
    s2: *const libc::c_char,
    n: libc::size_t,
 ) -> libc::c_int {
-    let s1 = std::ffi::CStr::from_ptr(s1)
-        .to_string_lossy()
-        .to_lowercase();
-    let s2 = std::ffi::CStr::from_ptr(s2)
-        .to_string_lossy()
-        .to_lowercase();
-    let m1 = std::cmp::min(n, s1.len());
-    let m2 = std::cmp::min(n, s2.len());
+    if s1.is_null() || s2.is_null() {
+        return 1;
+    }

-    if s1[..m1] == s2[..m2] {
+    // s1 and s2 might not be null terminated.
+
+    let s1_slice = std::slice::from_raw_parts(s1 as *const u8, n);
+    let s2_slice = std::slice::from_raw_parts(s2 as *const u8, n);
+
+    let s1 = std::ffi::CStr::from_bytes_with_nul_unchecked(s1_slice)
+        .to_string_lossy()
+        .to_lowercase();
+    let s2 = std::ffi::CStr::from_bytes_with_nul_unchecked(s2_slice)
+        .to_string_lossy()
+        .to_lowercase();
+
+    if s1 == s2 {
        0
    } else {
        1
--- a/src/configure/auto_mozilla.rs
+++ b/src/configure/auto_mozilla.rs
@@ -72,7 +72,7 @@ pub fn moz_autoconfigure(
                moz_autoconfigure_text_cb(e, &mut moz_ac, &reader)
            }
            Err(e) => {
-                error!(
+                warn!(
                    context,
                    "Configure xml: Error at position {}: {:?}",
                    reader.buffer_position(),
--- a/src/dc_receive_imf.rs
+++ b/src/dc_receive_imf.rs
@@ -1,7 +1,7 @@
 use std::ptr;

 use itertools::join;
-use libc::{free, strcmp};
+use libc::strcmp;
 use mmime::clist::*;
 use mmime::mailimf::types::*;
 use mmime::mailmime::content::*;
@@ -319,13 +319,8 @@ unsafe fn add_parts(
    let mut chat_id_blocked = Blocked::Not;
    let mut sort_timestamp = 0;
    let mut rcvd_timestamp = 0;
-    let mut mime_in_reply_to = std::ptr::null_mut();
-    let mut mime_references = std::ptr::null_mut();
-
-    let cleanup = |mime_in_reply_to: *mut libc::c_char, mime_references: *mut libc::c_char| {
-        free(mime_in_reply_to.cast());
-        free(mime_references.cast());
-    };
+    let mut mime_in_reply_to = String::new();
+    let mut mime_references = String::new();

    // collect the rest information, CC: is added to the to-list, BCC: is ignored
    // (we should not add BCC to groups as this would split groups. We could add them as "known contacts",
@@ -359,7 +354,6 @@ unsafe fn add_parts(
            message::update_server_uid(context, &rfc724_mid, server_folder.as_ref(), server_uid);
        }

-        cleanup(mime_in_reply_to, mime_references);
        bail!("Message already in DB");
    }

@@ -588,20 +582,14 @@ unsafe fn add_parts(
    if let Some(field) = mime_parser.lookup_field_typ("In-Reply-To", MAILIMF_FIELD_IN_REPLY_TO) {
        let fld_in_reply_to = (*field).fld_data.fld_in_reply_to;
        if !fld_in_reply_to.is_null() {
-            mime_in_reply_to = dc_str_from_clist(
-                (*(*field).fld_data.fld_in_reply_to).mid_list,
-                b" \x00" as *const u8 as *const libc::c_char,
-            )
+            mime_in_reply_to = dc_str_from_clist((*(*field).fld_data.fld_in_reply_to).mid_list, " ")
        }
    }

    if let Some(field) = mime_parser.lookup_field_typ("References", MAILIMF_FIELD_REFERENCES) {
        let fld_references = (*field).fld_data.fld_references;
        if !fld_references.is_null() {
-            mime_references = dc_str_from_clist(
-                (*(*field).fld_data.fld_references).mid_list,
-                b" \x00" as *const u8 as *const libc::c_char,
-            )
+            mime_references = dc_str_from_clist((*(*field).fld_data.fld_references).mid_list, " ")
        }
    }

@@ -612,97 +600,91 @@ unsafe fn add_parts(
    let icnt = mime_parser.parts.len();
    let mut txt_raw = None;

-    context
-        .sql
-        .prepare(
-            "INSERT INTO msgs \
-             (rfc724_mid, server_folder, server_uid, chat_id, from_id, to_id, timestamp, \
-             timestamp_sent, timestamp_rcvd, type, state, msgrmsg,  txt, txt_raw, param, \
-             bytes, hidden, mime_headers,  mime_in_reply_to, mime_references) \
-             VALUES (?,?,?,?,?,?, ?,?,?,?,?,?, ?,?,?,?,?,?, ?,?);",
-            |mut stmt, conn| {
-                for i in 0..icnt {
-                    let part = &mut mime_parser.parts[i];
-                    if part.is_meta {
-                        continue;
-                    }
+    context.sql.prepare(
+        "INSERT INTO msgs \
+         (rfc724_mid, server_folder, server_uid, chat_id, from_id, to_id, timestamp, \
+         timestamp_sent, timestamp_rcvd, type, state, msgrmsg,  txt, txt_raw, param, \
+         bytes, hidden, mime_headers,  mime_in_reply_to, mime_references) \
+         VALUES (?,?,?,?,?,?, ?,?,?,?,?,?, ?,?,?,?,?,?, ?,?);",
+        |mut stmt, conn| {
+            for i in 0..icnt {
+                let part = &mut mime_parser.parts[i];
+                if part.is_meta {
+                    continue;
+                }

-                    if let Some(ref msg) = part.msg {
-                        if mime_parser.location_kml.is_some()
-                            && icnt == 1
-                            && (msg == "-location-" || msg.is_empty())
-                        {
-                            *hidden = 1;
-                            if state == MessageState::InFresh {
-                                state = MessageState::InNoticed;
-                            }
+                if let Some(ref msg) = part.msg {
+                    if mime_parser.location_kml.is_some()
+                        && icnt == 1
+                        && (msg == "-location-" || msg.is_empty())
+                    {
+                        *hidden = 1;
+                        if state == MessageState::InFresh {
+                            state = MessageState::InNoticed;
                        }
                    }
-                    if part.typ == Viewtype::Text {
-                        let msg_raw = part.msg_raw.as_ref().cloned().unwrap_or_default();
-                        let subject = mime_parser
-                            .subject
-                            .as_ref()
-                            .map(|s| s.to_string())
-                            .unwrap_or("".into());
-                        txt_raw = Some(format!("{}\n\n{}", subject, msg_raw));
-                    }
-                    if mime_parser.is_system_message != SystemMessage::Unknown {
-                        part.param
-                            .set_int(Param::Cmd, mime_parser.is_system_message as i32);
-                    }
-
-                    /*
-                    info!(
-                        context,
-                        "received mime message {:?}",
-                        String::from_utf8_lossy(std::slice::from_raw_parts(
-                            imf_raw_not_terminated as *const u8,
-                            imf_raw_bytes,
-                        ))
-                    );
-                    */
-
-                    stmt.execute(params![
-                        rfc724_mid,
-                        server_folder.as_ref(),
-                        server_uid as libc::c_int,
-                        *chat_id as libc::c_int,
-                        *from_id as libc::c_int,
-                        *to_id as libc::c_int,
-                        sort_timestamp,
-                        *sent_timestamp,
-                        rcvd_timestamp,
-                        part.typ,
-                        state,
-                        msgrmsg,
-                        part.msg.as_ref().map_or("", String::as_str),
-                        // txt_raw might contain invalid utf8
-                        txt_raw.unwrap_or_default(),
-                        part.param.to_string(),
-                        part.bytes,
-                        *hidden,
-                        if save_mime_headers {
-                            Some(String::from_utf8_lossy(imf_raw))
-                        } else {
-                            None
-                        },
-                        to_string_lossy(mime_in_reply_to),
-                        to_string_lossy(mime_references),
-                    ])?;
-
-                    txt_raw = None;
-                    *insert_msg_id =
-                        sql::get_rowid_with_conn(context, conn, "msgs", "rfc724_mid", &rfc724_mid);
-                    created_db_entries.push((*chat_id as usize, *insert_msg_id as usize));
                }
-                Ok(())
-            },
-        )
-        .map_err(|err| {
-            cleanup(mime_in_reply_to, mime_references);
-            err
-        })?;
+                if part.typ == Viewtype::Text {
+                    let msg_raw = part.msg_raw.as_ref().cloned().unwrap_or_default();
+                    let subject = mime_parser
+                        .subject
+                        .as_ref()
+                        .map(|s| s.to_string())
+                        .unwrap_or("".into());
+                    txt_raw = Some(format!("{}\n\n{}", subject, msg_raw));
+                }
+                if mime_parser.is_system_message != SystemMessage::Unknown {
+                    part.param
+                        .set_int(Param::Cmd, mime_parser.is_system_message as i32);
+                }
+
+                /*
+                info!(
+                    context,
+                    "received mime message {:?}",
+                    String::from_utf8_lossy(std::slice::from_raw_parts(
+                        imf_raw_not_terminated as *const u8,
+                        imf_raw_bytes,
+                    ))
+                );
+                */
+
+                stmt.execute(params![
+                    rfc724_mid,
+                    server_folder.as_ref(),
+                    server_uid as libc::c_int,
+                    *chat_id as libc::c_int,
+                    *from_id as libc::c_int,
+                    *to_id as libc::c_int,
+                    sort_timestamp,
+                    *sent_timestamp,
+                    rcvd_timestamp,
+                    part.typ,
+                    state,
+                    msgrmsg,
+                    part.msg.as_ref().map_or("", String::as_str),
+                    // txt_raw might contain invalid utf8
+                    txt_raw.unwrap_or_default(),
+                    part.param.to_string(),
+                    part.bytes,
+                    *hidden,
+                    if save_mime_headers {
+                        Some(String::from_utf8_lossy(imf_raw))
+                    } else {
+                        None
+                    },
+                    mime_in_reply_to,
+                    mime_references,
+                ])?;
+
+                txt_raw = None;
+                *insert_msg_id =
+                    sql::get_rowid_with_conn(context, conn, "msgs", "rfc724_mid", &rfc724_mid);
+                created_db_entries.push((*chat_id as usize, *insert_msg_id as usize));
+            }
+            Ok(())
+        },
+    )?;

    info!(
        context,
@@ -722,8 +704,6 @@ unsafe fn add_parts(
        }
    }

-    cleanup(mime_in_reply_to, mime_references);
-
    Ok(())
 }

--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -51,75 +51,6 @@ pub unsafe fn dc_strdup(s: *const libc::c_char) -> *mut libc::c_char {
    ret
 }

-unsafe fn dc_ltrim(buf: *mut libc::c_char) {
-    let mut len: libc::size_t;
-    let mut cur: *const libc::c_uchar;
-    if !buf.is_null() && 0 != *buf as libc::c_int {
-        len = strlen(buf);
-        cur = buf as *const libc::c_uchar;
-        while 0 != *cur as libc::c_int && 0 != libc::isspace(*cur as libc::c_int) {
-            cur = cur.offset(1isize);
-            len = len.wrapping_sub(1)
-        }
-        if buf as *const libc::c_uchar != cur {
-            libc::memmove(
-                buf as *mut libc::c_void,
-                cur as *const libc::c_void,
-                len.wrapping_add(1),
-            );
-        }
-    };
-}
-
-unsafe fn dc_rtrim(buf: *mut libc::c_char) {
-    let mut len: libc::size_t;
-    let mut cur: *mut libc::c_uchar;
-    if !buf.is_null() && 0 != *buf as libc::c_int {
-        len = strlen(buf);
-        cur = (buf as *mut libc::c_uchar)
-            .offset(len as isize)
-            .offset(-1isize);
-        while cur != buf as *mut libc::c_uchar && 0 != libc::isspace(*cur as libc::c_int) {
-            cur = cur.offset(-1isize);
-            len = len.wrapping_sub(1)
-        }
-        *cur.offset(
-            (if 0 != libc::isspace(*cur as libc::c_int) {
-                0
-            } else {
-                1
-            }) as isize,
-        ) = '\u{0}' as i32 as libc::c_uchar
-    };
-}
-
-pub(crate) unsafe fn dc_trim(buf: *mut libc::c_char) {
-    dc_ltrim(buf);
-    dc_rtrim(buf);
-}
-
-/* remove all \r characters from string */
-pub(crate) unsafe fn dc_remove_cr_chars(buf: *mut libc::c_char) {
-    /* search for first `\r` */
-    let mut p1: *const libc::c_char = buf;
-    while 0 != *p1 {
-        if *p1 as libc::c_int == '\r' as i32 {
-            break;
-        }
-        p1 = p1.offset(1isize)
-    }
-    /* p1 is `\r` or null-byte; start removing `\r` */
-    let mut p2: *mut libc::c_char = p1 as *mut libc::c_char;
-    while 0 != *p1 {
-        if *p1 as libc::c_int != '\r' as i32 {
-            *p2 = *p1;
-            p2 = p2.offset(1isize)
-        }
-        p1 = p1.offset(1isize)
-    }
-    *p2 = 0 as libc::c_char;
-}
-
 /// Shortens a string to a specified length and adds "..." or "[...]" to the end of
 /// the shortened string.
 pub(crate) fn dc_truncate(buf: &str, approx_chars: usize, do_unwrap: bool) -> Cow<str> {
@@ -143,36 +74,18 @@ pub(crate) fn dc_truncate(buf: &str, approx_chars: usize, do_unwrap: bool) -> Co
    }
 }

-pub(crate) unsafe fn dc_str_from_clist(
-    list: *const clist,
-    delimiter: *const libc::c_char,
-) -> *mut libc::c_char {
+pub(crate) fn dc_str_from_clist(list: *const clist, delimiter: &str) -> String {
    let mut res = String::new();

    if !list.is_null() {
-        let mut cur: *mut clistiter = (*list).first;
-        while !cur.is_null() {
-            let rfc724_mid = (if !cur.is_null() {
-                (*cur).data
-            } else {
-                ptr::null_mut()
-            }) as *const libc::c_char;
-
-            if !rfc724_mid.is_null() {
-                if !res.is_empty() && !delimiter.is_null() {
-                    res += as_str(delimiter);
-                }
-                res += as_str(rfc724_mid);
-            }
-            cur = if !cur.is_null() {
-                (*cur).next
-            } else {
-                ptr::null_mut()
+        for rfc724_mid in unsafe { (*list).into_iter() } {
+            if !res.is_empty() {
+                res += delimiter;
            }
+            res += as_str(rfc724_mid as *const libc::c_char);
        }
    }
-
-    res.strdup()
+    res
 }

 pub(crate) fn dc_str_to_clist(str: &str, delimiter: &str) -> *mut clist {
@@ -593,6 +506,25 @@ pub fn dc_read_file<P: AsRef<std::path::Path>>(
    }
 }

+pub fn dc_open_file<P: AsRef<std::path::Path>>(
+    context: &Context,
+    path: P,
+) -> Result<std::fs::File, Error> {
+    let path_abs = dc_get_abs_path(context, &path);
+
+    match fs::File::open(&path_abs) {
+        Ok(bytes) => Ok(bytes),
+        Err(err) => {
+            warn!(
+                context,
+                "Cannot read \"{}\" or file is empty.",
+                path.as_ref().display()
+            );
+            Err(err.into())
+        }
+    }
+}
+
 pub(crate) fn dc_get_next_backup_path(
    folder: impl AsRef<Path>,
    backup_time: i64,
@@ -800,9 +732,7 @@ pub fn to_string_lossy(s: *const libc::c_char) -> String {

    let cstr = unsafe { CStr::from_ptr(s) };

-    cstr.to_str()
-        .map(|s| s.to_string())
-        .unwrap_or_else(|_| cstr.to_string_lossy().to_string())
+    cstr.to_string_lossy().to_string()
 }

 pub fn as_str<'a>(s: *const libc::c_char) -> &'a str {
@@ -1007,54 +937,6 @@ mod tests {
        }
    }

-    #[test]
-    fn test_dc_ltrim() {
-        unsafe {
-            let html: *const libc::c_char =
-                b"\r\r\nline1<br>\r\n\r\n\r\rline2\n\r\x00" as *const u8 as *const libc::c_char;
-            let out: *mut libc::c_char = strndup(html, strlen(html) as libc::c_ulong);
-
-            dc_ltrim(out);
-
-            assert_eq!(
-                CStr::from_ptr(out as *const libc::c_char).to_str().unwrap(),
-                "line1<br>\r\n\r\n\r\rline2\n\r"
-            );
-        }
-    }
-
-    #[test]
-    fn test_dc_rtrim() {
-        unsafe {
-            let html: *const libc::c_char =
-                b"\r\r\nline1<br>\r\n\r\n\r\rline2\n\r\x00" as *const u8 as *const libc::c_char;
-            let out: *mut libc::c_char = strndup(html, strlen(html) as libc::c_ulong);
-
-            dc_rtrim(out);
-
-            assert_eq!(
-                CStr::from_ptr(out as *const libc::c_char).to_str().unwrap(),
-                "\r\r\nline1<br>\r\n\r\n\r\rline2"
-            );
-        }
-    }
-
-    #[test]
-    fn test_dc_trim() {
-        unsafe {
-            let html: *const libc::c_char =
-                b"\r\r\nline1<br>\r\n\r\n\r\rline2\n\r\x00" as *const u8 as *const libc::c_char;
-            let out: *mut libc::c_char = strndup(html, strlen(html) as libc::c_ulong);
-
-            dc_trim(out);
-
-            assert_eq!(
-                CStr::from_ptr(out as *const libc::c_char).to_str().unwrap(),
-                "line1<br>\r\n\r\n\r\rline2"
-            );
-        }
-    }
-
    #[test]
    fn test_rust_ftoa() {
        assert_eq!("1.22", format!("{}", 1.22));
@@ -1160,17 +1042,11 @@ mod tests {
        unsafe {
            let list: *mut clist = dc_str_to_clist("foo bar test", " ");
            assert_eq!((*list).count, 3);
-            let str: *mut libc::c_char =
-                dc_str_from_clist(list, b" \x00" as *const u8 as *const libc::c_char);
-
-            assert_eq!(
-                CStr::from_ptr(str as *const libc::c_char).to_str().unwrap(),
-                "foo bar test"
-            );
+            let str = dc_str_from_clist(list, " ");
+            assert_eq!(str, "foo bar test");

            clist_free_content(list);
            clist_free(list);
-            free(str as *mut libc::c_void);
        }
    }

@@ -1523,19 +1399,4 @@ mod tests {
        let listflags: u32 = DC_GCL_VERIFIED_ONLY.try_into().unwrap();
        assert!(listflags_has(listflags, DC_GCL_ADD_SELF) == false);
    }
-
-    #[test]
-    fn test_dc_remove_cr_chars() {
-        unsafe {
-            let input = "foo\r\nbar".strdup();
-            dc_remove_cr_chars(input);
-            assert_eq!("foo\nbar", to_string_lossy(input));
-            free(input.cast());
-
-            let input = "\rfoo\r\rbar\r".strdup();
-            dc_remove_cr_chars(input);
-            assert_eq!("foobar", to_string_lossy(input));
-            free(input.cast());
-        }
-    }
 }
--- a/src/e2ee.rs
+++ b/src/e2ee.rs
@@ -28,7 +28,7 @@ use crate::key::*;
 use crate::keyring::*;
 use crate::mimefactory::MimeFactory;
 use crate::peerstate::*;
-use crate::pgp::*;
+use crate::pgp;
 use crate::securejoin::handle_degrade_event;
 use crate::wrapmime;
 use crate::wrapmime::*;
@@ -211,7 +211,7 @@ impl EncryptHelper {
                "could not write/allocate"
            );

-            let ctext = dc_pgp_pk_encrypt(
+            let ctext = pgp::pk_encrypt(
                std::slice::from_raw_parts((*plain).str_0 as *const u8, (*plain).len),
                &keyring,
                sign_key.as_ref(),
@@ -398,7 +398,7 @@ fn load_or_generate_self_public_key(context: &Context, self_addr: impl AsRef<str
        context,
        "Generating keypair with {} bits, e={} ...", 2048, 65537,
    );
-    match dc_pgp_create_keypair(&self_addr) {
+    match pgp::create_keypair(&self_addr) {
        Some((public_key, private_key)) => {
            match dc_key_save_self_keypair(
                context,
@@ -581,7 +581,7 @@ fn decrypt_part(
        // we should only have one decryption happening
        ensure!(ret_valid_signatures.is_empty(), "corrupt signatures");

-        let plain = match dc_pgp_pk_decrypt(
+        let plain = match pgp::pk_decrypt(
            &data,
            &private_keyring,
            &public_keyring_for_validate,
--- a/src/error.rs
+++ b/src/error.rs
@@ -70,12 +70,6 @@ impl From<std::str::Utf8Error> for Error {
    }
 }

-impl From<std::string::FromUtf8Error> for Error {
-    fn from(err: std::string::FromUtf8Error) -> Error {
-        Error::FromUtf8(err)
-    }
-}
-
 impl From<image_meta::ImageError> for Error {
    fn from(err: image_meta::ImageError) -> Error {
        Error::Image(err)
@@ -94,6 +88,12 @@ impl From<pgp::errors::Error> for Error {
    }
 }

+impl From<std::string::FromUtf8Error> for Error {
+    fn from(err: std::string::FromUtf8Error) -> Error {
+        Error::FromUtf8(err)
+    }
+}
+
 #[macro_export]
 macro_rules! bail {
    ($e:expr) => {
--- a/src/imex.rs
+++ b/src/imex.rs
@@ -1,7 +1,5 @@
 use core::cmp::{max, min};
-use std::ffi::CString;
 use std::path::{Path, PathBuf};
-use std::ptr;

 use num_traits::FromPrimitive;
 use rand::{thread_rng, Rng};
@@ -19,7 +17,7 @@ use crate::job::*;
 use crate::key::*;
 use crate::message::Message;
 use crate::param::*;
-use crate::pgp::*;
+use crate::pgp;
 use crate::sql::{self, Sql};
 use crate::stock::StockMessage;

@@ -171,7 +169,7 @@ pub fn render_setup_file(context: &Context, passphrase: &str) -> Result<String>
        true => Some(("Autocrypt-Prefer-Encrypt", "mutual")),
    };
    let private_key_asc = private_key.to_asc(ac_headers);
-    let encr = dc_pgp_symm_encrypt(&passphrase, private_key_asc.as_bytes())?;
+    let encr = pgp::symm_encrypt(&passphrase, private_key_asc.as_bytes())?;

    let replacement = format!(
        concat!(
@@ -241,18 +239,12 @@ pub fn continue_key_transfer(context: &Context, msg_id: u32, setup_code: &str) -
    );

    if let Some(filename) = msg.get_file(context) {
-        if let Ok(ref mut buf) = dc_read_file(context, filename) {
-            let sc = normalize_setup_code(setup_code);
-            if let Ok(armored_key) = decrypt_setup_file(context, sc, buf) {
-                set_self_key(context, &armored_key, true, true)?;
-            } else {
-                bail!("Bad setup code.")
-            }
+        let file = dc_open_file(context, filename)?;
+        let sc = normalize_setup_code(setup_code);
+        let armored_key = decrypt_setup_file(context, &sc, file)?;
+        set_self_key(context, &armored_key, true, true)?;

-            Ok(())
-        } else {
-            bail!("Cannot read Autocrypt Setup Message file.");
-        }
+        Ok(())
    } else {
        bail!("Message is no Autocrypt Setup Message.");
    }
@@ -326,53 +318,15 @@ fn set_self_key(
    Ok(())
 }

-fn decrypt_setup_file(
+fn decrypt_setup_file<T: std::io::Read + std::io::Seek>(
    _context: &Context,
-    passphrase: impl AsRef<str>,
-    filecontent: &mut [u8],
+    passphrase: &str,
+    file: T,
 ) -> Result<String> {
-    let mut fc_headerline = String::default();
-    let mut fc_base64: *const libc::c_char = ptr::null();
+    let plain_bytes = pgp::symm_decrypt(passphrase, file)?;
+    let plain_text = std::string::String::from_utf8(plain_bytes)?;

-    let split_result = unsafe {
-        dc_split_armored_data(
-            filecontent.as_mut_ptr().cast(),
-            &mut fc_headerline,
-            ptr::null_mut(),
-            ptr::null_mut(),
-            &mut fc_base64,
-        )
-    };
-
-    if !split_result || fc_headerline != "-----BEGIN PGP MESSAGE-----" || fc_base64.is_null() {
-        bail!("Invalid armored data");
-    }
-
-    // convert base64 to binary
-    let base64_encoded =
-        unsafe { std::slice::from_raw_parts(fc_base64 as *const u8, libc::strlen(fc_base64)) };
-
-    let data = base64_decode(&base64_encoded)?;
-
-    // decrypt symmetrically
-    let payload = dc_pgp_symm_decrypt(passphrase.as_ref(), &data)?;
-    let payload_str = String::from_utf8(payload)?;
-
-    Ok(payload_str)
-}
-
-/// Decode the base64 encoded slice. Handles line breaks.
-fn base64_decode(input: &[u8]) -> Result<Vec<u8>> {
-    use std::io::Read;
-    let c = std::io::Cursor::new(input);
-    let lr = pgp::line_reader::LineReader::new(c);
-    let br = pgp::base64_reader::Base64Reader::new(lr);
-    let mut reader = pgp::base64_decoder::Base64Decoder::new(br);
-
-    let mut data = Vec::new();
-    reader.read_to_end(&mut data)?;
-
-    Ok(data)
+    Ok(plain_text)
 }

 pub fn normalize_setup_code(s: &str) -> String {
@@ -638,7 +592,6 @@ fn import_self_keys(context: &Context, dir: impl AsRef<Path>) -> Result<()> {
    Maybe we should make the "default" key handlong also a little bit smarter
    (currently, the last imported key is the standard key unless it contains the string "legacy" in its name) */
    let mut set_default: bool;
-    let mut key: String;
    let mut imported_cnt = 0;

    let dir_name = dir.as_ref().to_string_lossy();
@@ -663,40 +616,17 @@ fn import_self_keys(context: &Context, dir: impl AsRef<Path>) -> Result<()> {
                continue;
            }
        }
-        let ccontent = if let Ok(content) = dc_read_file(context, &path_plus_name) {
-            key = String::from_utf8_lossy(&content).to_string();
-            CString::new(content).unwrap_or_default()
-        } else {
-            continue;
-        };
-
-        /* only import if we have a private key */
-        let mut buf2_headerline = String::default();
-        let split_res: bool;
-        unsafe {
-            let buf2 = dc_strdup(ccontent.as_ptr());
-            split_res = dc_split_armored_data(
-                buf2,
-                &mut buf2_headerline,
-                ptr::null_mut(),
-                ptr::null_mut(),
-                ptr::null_mut(),
-            );
-            libc::free(buf2 as *mut libc::c_void);
+        match dc_read_file(context, &path_plus_name) {
+            Ok(buf) => {
+                let armored = std::string::String::from_utf8_lossy(&buf);
+                if let Err(err) = set_self_key(context, &armored, set_default, false) {
+                    error!(context, "set_self_key: {}", err);
+                    continue;
+                }
+            }
+            Err(_) => continue,
        }
-        if split_res
-            && buf2_headerline.contains("-----BEGIN PGP PUBLIC KEY BLOCK-----")
-            && !key.contains("-----BEGIN PGP PRIVATE KEY BLOCK")
-        {
-            info!(context, "ignoring public key file '{}", name_f);
-            // it's fine: DC exports public with private
-            continue;
-        }
-        if let Err(err) = set_self_key(context, &key, set_default, false) {
-            error!(context, "set_self_key: {}", err);
-            continue;
-        }
-        imported_cnt += 1
+        imported_cnt += 1;
    }
    ensure!(
        imported_cnt > 0,
@@ -783,7 +713,9 @@ fn export_key_to_asc_file(
 mod tests {
    use super::*;

+    use crate::pgp::{split_armored_data, HEADER_AUTOCRYPT, HEADER_SETUPCODE};
    use crate::test_utils::*;
+    use ::pgp::armor::BlockType;

    #[test]
    fn test_render_setup_file() {
@@ -866,50 +798,26 @@ mod tests {
        let ctx = dummy_context();
        let context = &ctx.ctx;

-        let mut headerline = String::default();
-        let mut setupcodebegin = ptr::null();
-        let mut preferencrypt = ptr::null();
+        let buf_1 = S_EM_SETUPFILE.as_bytes().to_vec();
+        let (typ, headers, base64) = split_armored_data(&buf_1).unwrap();
+        assert_eq!(typ, BlockType::Message);
+        assert!(S_EM_SETUPCODE.starts_with(headers.get(HEADER_SETUPCODE).unwrap()));
+        assert!(headers.get(HEADER_AUTOCRYPT).is_none());

-        unsafe {
-            let buf_1 = S_EM_SETUPFILE.strdup();
-            let res = dc_split_armored_data(
-                buf_1,
-                &mut headerline,
-                &mut setupcodebegin,
-                &mut preferencrypt,
-                ptr::null_mut(),
-            );
-            libc::free(buf_1 as *mut libc::c_void);
-            assert!(res);
-        }
-        assert_eq!(headerline, "-----BEGIN PGP MESSAGE-----");
-        assert!(!setupcodebegin.is_null());
+        assert!(!base64.is_empty());

-        // TODO: verify that this is the right check
-        assert!(S_EM_SETUPCODE.starts_with(as_str(setupcodebegin)));
+        let setup_file = S_EM_SETUPFILE.to_string();
+        let decrypted = decrypt_setup_file(
+            context,
+            S_EM_SETUPCODE,
+            std::io::Cursor::new(setup_file.as_bytes()),
+        )
+        .unwrap();

-        assert!(preferencrypt.is_null());
+        let (typ, headers, _base64) = split_armored_data(decrypted.as_bytes()).unwrap();

-        let mut setup_file = S_EM_SETUPFILE.to_string();
-        let decrypted = unsafe {
-            decrypt_setup_file(context, S_EM_SETUPCODE, setup_file.as_bytes_mut()).unwrap()
-        };
-
-        unsafe {
-            let buf1 = decrypted.strdup();
-            assert!(dc_split_armored_data(
-                buf1,
-                &mut headerline,
-                &mut setupcodebegin,
-                &mut preferencrypt,
-                ptr::null_mut(),
-            ));
-            libc::free(buf1 as *mut libc::c_void);
-        }
-
-        assert_eq!(headerline, "-----BEGIN PGP PRIVATE KEY BLOCK-----");
-        assert!(setupcodebegin.is_null());
-        assert!(!preferencrypt.is_null());
-        assert_eq!(as_str(preferencrypt), "mutual",);
+        assert_eq!(typ, BlockType::PrivateKey);
+        assert_eq!(headers.get(HEADER_AUTOCRYPT), Some(&"mutual".to_string()));
+        assert!(headers.get(HEADER_SETUPCODE).is_none());
    }
 }
--- a/src/key.rs
+++ b/src/key.rs
@@ -381,7 +381,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
    #[test]
    #[ignore] // is too expensive
    fn test_from_slice_roundtrip() {
-        let (public_key, private_key) = crate::pgp::dc_pgp_create_keypair("hello").unwrap();
+        let (public_key, private_key) = crate::pgp::create_keypair("hello").unwrap();

        let binary = public_key.to_bytes();
        let public_key2 = Key::from_slice(&binary, KeyType::Public).expect("invalid public key");
@@ -416,7 +416,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
    #[test]
    #[ignore] // is too expensive
    fn test_ascii_roundtrip() {
-        let (public_key, private_key) = crate::pgp::dc_pgp_create_keypair("hello").unwrap();
+        let (public_key, private_key) = crate::pgp::create_keypair("hello").unwrap();

        let s = public_key.to_armored_string(None).unwrap();
        let (public_key2, _) =
--- a/src/message.rs
+++ b/src/message.rs
@@ -1,5 +1,4 @@
 use std::path::{Path, PathBuf};
-use std::ptr;

 use deltachat_derive::{FromSql, ToSql};

@@ -107,6 +106,7 @@ impl Message {
            msg.hidden = row.get(18)?;
            msg.location_id = row.get(19)?;
            msg.chat_blocked = row.get::<_, Option<Blocked>>(20)?.unwrap_or_default();
+
            Ok(msg)
        })
    }
@@ -339,23 +339,10 @@ impl Message {
        }

        if let Some(filename) = self.get_file(context) {
-            if let Ok(mut buf) = dc_read_file(context, filename) {
-                unsafe {
-                    // just a pointer inside buf, MUST NOT be free()'d
-                    let mut buf_headerline = String::default();
-                    // just a pointer inside buf, MUST NOT be free()'d
-                    let mut buf_setupcodebegin = ptr::null();
-
-                    if dc_split_armored_data(
-                        buf.as_mut_ptr().cast(),
-                        &mut buf_headerline,
-                        &mut buf_setupcodebegin,
-                        ptr::null_mut(),
-                        ptr::null_mut(),
-                    ) && buf_headerline == "-----BEGIN PGP MESSAGE-----"
-                        && !buf_setupcodebegin.is_null()
-                    {
-                        return Some(to_string_lossy(buf_setupcodebegin));
+            if let Ok(ref buf) = dc_read_file(context, filename) {
+                if let Ok((typ, headers, _)) = split_armored_data(buf) {
+                    if typ == pgp::armor::BlockType::Message {
+                        return headers.get(crate::pgp::HEADER_SETUPCODE).cloned();
                    }
                }
            }
--- a/src/pgp.rs
+++ b/src/pgp.rs
@@ -1,9 +1,8 @@
-use std::collections::HashSet;
+use std::collections::{BTreeMap, HashSet};
 use std::convert::TryInto;
 use std::io::Cursor;
-use std::ptr;

-use libc::{strchr, strlen, strncmp, strspn, strstr};
+use pgp::armor::BlockType;
 use pgp::composed::{
    Deserializable, KeyType as PgpKeyType, Message, SecretKeyParamsBuilder, SignedPublicKey,
    SignedSecretKey, SubkeyParamsBuilder,
@@ -12,126 +11,43 @@ use pgp::crypto::{HashAlgorithm, SymmetricKeyAlgorithm};
 use pgp::types::{CompressionAlgorithm, KeyTrait, SecretKeyTrait, StringToKey};
 use rand::thread_rng;

-use crate::dc_tools::*;
 use crate::error::Error;
 use crate::key::*;
 use crate::keyring::*;

-pub unsafe fn dc_split_armored_data(
-    buf: *mut libc::c_char,
-    ret_headerline: *mut String,
-    ret_setupcodebegin: *mut *const libc::c_char,
-    ret_preferencrypt: *mut *const libc::c_char,
-    ret_base64: *mut *const libc::c_char,
-) -> bool {
-    let mut success = false;
-    let mut line_chars: libc::size_t = 0;
-    let mut line: *mut libc::c_char = buf;
-    let mut p1: *mut libc::c_char = buf;
-    let mut p2: *mut libc::c_char;
-    let mut headerline: *mut libc::c_char = ptr::null_mut();
-    let mut base64: *mut libc::c_char = ptr::null_mut();
-    if !ret_setupcodebegin.is_null() {
-        *ret_setupcodebegin = ptr::null_mut();
-    }
-    if !ret_preferencrypt.is_null() {
-        *ret_preferencrypt = ptr::null();
-    }
-    if !ret_base64.is_null() {
-        *ret_base64 = ptr::null();
-    }
-    if !buf.is_null() {
-        dc_remove_cr_chars(buf);
-        while 0 != *p1 {
-            if i32::from(*p1) == '\n' as i32 {
-                *line.offset(line_chars as isize) = 0i32 as libc::c_char;
-                if headerline.is_null() {
-                    dc_trim(line);
-                    if strncmp(
-                        line,
-                        b"-----BEGIN \x00" as *const u8 as *const libc::c_char,
-                        1,
-                    ) == 0i32
-                        && strncmp(
-                            &mut *line.offset(strlen(line).wrapping_sub(5) as isize),
-                            b"-----\x00" as *const u8 as *const libc::c_char,
-                            5,
-                        ) == 0i32
-                    {
-                        headerline = line;
-                        *ret_headerline = as_str(headerline).to_string();
-                    }
-                } else if strspn(line, b"\t\r\n \x00" as *const u8 as *const libc::c_char)
-                    == strlen(line)
-                {
-                    base64 = p1.offset(1isize);
-                    break;
-                } else {
-                    p2 = strchr(line, ':' as i32);
-                    if p2.is_null() {
-                        *line.add(line_chars) = '\n' as i32 as libc::c_char;
-                        base64 = line;
-                        break;
-                    } else {
-                        *p2 = 0i32 as libc::c_char;
-                        dc_trim(line);
-                        if strcasecmp(
-                            line,
-                            b"Passphrase-Begin\x00" as *const u8 as *const libc::c_char,
-                        ) == 0i32
-                        {
-                            p2 = p2.offset(1isize);
-                            dc_trim(p2);
-                            if !ret_setupcodebegin.is_null() {
-                                *ret_setupcodebegin = p2
-                            }
-                        } else if strcasecmp(
-                            line,
-                            b"Autocrypt-Prefer-Encrypt\x00" as *const u8 as *const libc::c_char,
-                        ) == 0i32
-                        {
-                            p2 = p2.offset(1isize);
-                            dc_trim(p2);
-                            if !ret_preferencrypt.is_null() {
-                                *ret_preferencrypt = p2
-                            }
-                        }
-                    }
-                }
-                p1 = p1.offset(1isize);
-                line = p1;
-                line_chars = 0;
-            } else {
-                p1 = p1.offset(1isize);
-                line_chars = line_chars.wrapping_add(1)
-            }
-        }
-        if !(headerline.is_null() || base64.is_null()) {
-            /* now, line points to beginning of base64 data, search end */
-            /*the trailing space makes sure, this is not a normal base64 sequence*/
-            p1 = strstr(base64, b"-----END \x00" as *const u8 as *const libc::c_char);
-            if !(p1.is_null()
-                || strncmp(
-                    p1.offset(9isize),
-                    headerline.offset(11isize),
-                    strlen(headerline.offset(11isize)),
-                ) != 0i32)
-            {
-                *p1 = 0i32 as libc::c_char;
-                dc_trim(base64);
-                if !ret_base64.is_null() {
-                    *ret_base64 = base64
-                }
-                success = true;
-            }
-        }
-    }
+pub const HEADER_AUTOCRYPT: &str = "autocrypt-prefer-encrypt";
+pub const HEADER_SETUPCODE: &str = "passphrase-begin";

-    success
+/// 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>), Error> {
+    use std::io::Read;
+
+    let cursor = Cursor::new(buf);
+    let mut dearmor = pgp::armor::Dearmor::new(cursor);
+
+    let mut bytes = Vec::with_capacity(buf.len());
+
+    dearmor.read_to_end(&mut bytes)?;
+    ensure!(dearmor.typ.is_some(), "Failed to parse type");
+
+    let typ = dearmor.typ.unwrap();
+
+    // normalize headers
+    let headers = dearmor
+        .headers
+        .into_iter()
+        .map(|(key, value)| (key.trim().to_lowercase(), value.trim().to_string()))
+        .collect();
+
+    Ok((typ, headers, bytes))
 }

 /// Create a new key pair.
-pub fn dc_pgp_create_keypair(addr: impl AsRef<str>) -> Option<(Key, Key)> {
+pub fn create_keypair(addr: impl AsRef<str>) -> Option<(Key, Key)> {
    let user_id = format!("<{}>", addr.as_ref());

    let key_params = SecretKeyParamsBuilder::default()
@@ -181,7 +97,7 @@ pub fn dc_pgp_create_keypair(addr: impl AsRef<str>) -> Option<(Key, Key)> {
    Some((Key::Public(public_key), Key::Secret(private_key)))
 }

-pub fn dc_pgp_pk_encrypt(
+pub fn pk_encrypt(
    plain: &[u8],
    public_keys_for_encryption: &Keyring,
    private_key_for_signing: Option<&Key>,
@@ -218,7 +134,7 @@ pub fn dc_pgp_pk_encrypt(
    Ok(encoded_msg)
 }

-pub fn dc_pgp_pk_decrypt(
+pub fn pk_decrypt(
    ctext: &[u8],
    private_keys_for_decryption: &Keyring,
    public_keys_for_validation: &Keyring,
@@ -267,7 +183,7 @@ pub fn dc_pgp_pk_decrypt(
 }

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

@@ -281,8 +197,11 @@ pub fn dc_pgp_symm_encrypt(passphrase: &str, plain: &[u8]) -> Result<String, Err
 }

 /// Symmetric decryption.
-pub fn dc_pgp_symm_decrypt(passphrase: &str, ctext: &[u8]) -> Result<Vec<u8>, Error> {
-    let enc_msg = Message::from_bytes(Cursor::new(ctext))?;
+pub fn symm_decrypt<T: std::io::Read + std::io::Seek>(
+    passphrase: &str,
+    ctext: T,
+) -> 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::<Result<Vec<_>, _>>()?;
@@ -293,3 +212,35 @@ pub fn dc_pgp_symm_decrypt(passphrase: &str, ctext: &[u8]) -> Result<Vec<u8>, Er
        None => bail!("Decrypted message is empty"),
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_split_armored_data_1() {
+        let (typ, _headers, base64) = split_armored_data(
+            b"-----BEGIN PGP MESSAGE-----\nNoVal:\n\naGVsbG8gd29ybGQ=\n-----END PGP MESSAGE----",
+        )
+        .unwrap();
+
+        assert_eq!(typ, BlockType::Message);
+        assert!(!base64.is_empty());
+        assert_eq!(
+            std::string::String::from_utf8(base64).unwrap(),
+            "hello world"
+        );
+    }
+
+    #[test]
+    fn test_split_armored_data_2() {
+        let (typ, headers, base64) = split_armored_data(
+            b"-----BEGIN PGP PRIVATE KEY BLOCK-----\nAutocrypt-Prefer-Encrypt: mutual \n\naGVsbG8gd29ybGQ=\n-----END PGP PRIVATE KEY BLOCK-----"
+        )
+            .unwrap();
+
+        assert_eq!(typ, BlockType::PrivateKey);
+        assert!(!base64.is_empty());
+        assert_eq!(headers.get(HEADER_AUTOCRYPT), Some(&"mutual".to_string()));
+    }
+}
--- a/tests/stress.rs
+++ b/tests/stress.rs
@@ -1,18 +1,15 @@
 //! Stress some functions for testing; if used as a lib, this file is obsolete.

 use std::collections::HashSet;
-use std::ptr;

 use deltachat::chat::{self, Chat};
 use deltachat::config;
 use deltachat::contact::*;
 use deltachat::context::*;
-use deltachat::dc_tools::*;
 use deltachat::keyring::*;
 use deltachat::oauth2::*;
-use deltachat::pgp::*;
+use deltachat::pgp;
 use deltachat::Event;
-use libc::{free, strcmp, strdup};
 use tempfile::{tempdir, TempDir};

 /* some data used for testing
@@ -50,135 +47,6 @@ unsafe fn stress_functions(context: &Context) {
    assert!(res.contains(" configured_send_port "));
    assert!(res.contains(" configured_server_flags "));

-    let mut buf_0: *mut libc::c_char;
-    let mut headerline = String::default();
-    let mut setupcodebegin: *const libc::c_char = ptr::null();
-    let mut preferencrypt: *const libc::c_char = ptr::null();
-    let mut base64: *const libc::c_char = ptr::null();
-    buf_0 = strdup(
-        b"-----BEGIN PGP MESSAGE-----\nNoVal:\n\ndata\n-----END PGP MESSAGE-----\x00" as *const u8
-            as *const libc::c_char,
-    );
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        &mut setupcodebegin,
-        ptr::null_mut(),
-        &mut base64,
-    );
-    assert!(ok);
-    assert!(!headerline.is_empty());
-    assert_eq!(headerline, "-----BEGIN PGP MESSAGE-----");
-
-    assert!(!base64.is_null());
-    assert_eq!(as_str(base64 as *const libc::c_char), "data",);
-
-    free(buf_0 as *mut libc::c_void);
-
-    buf_0 =
-        strdup(b"-----BEGIN PGP MESSAGE-----\n\ndat1\n-----END PGP MESSAGE-----\n-----BEGIN PGP MESSAGE-----\n\ndat2\n-----END PGP MESSAGE-----\x00"
-                   as *const u8 as *const libc::c_char);
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        &mut setupcodebegin,
-        ptr::null_mut(),
-        &mut base64,
-    );
-
-    assert!(ok);
-    assert_eq!(headerline, "-----BEGIN PGP MESSAGE-----");
-
-    assert!(!base64.is_null());
-    assert_eq!(as_str(base64 as *const libc::c_char), "dat1",);
-
-    free(buf_0 as *mut libc::c_void);
-
-    buf_0 = strdup(
-        b"foo \n -----BEGIN PGP MESSAGE----- \n base64-123 \n  -----END PGP MESSAGE-----\x00"
-            as *const u8 as *const libc::c_char,
-    );
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        &mut setupcodebegin,
-        ptr::null_mut(),
-        &mut base64,
-    );
-
-    assert!(ok);
-    assert_eq!(headerline, "-----BEGIN PGP MESSAGE-----");
-    assert!(setupcodebegin.is_null());
-
-    assert!(!base64.is_null());
-    assert_eq!(as_str(base64 as *const libc::c_char), "base64-123",);
-
-    free(buf_0 as *mut libc::c_void);
-
-    buf_0 = strdup(b"foo-----BEGIN PGP MESSAGE-----\x00" as *const u8 as *const libc::c_char);
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        &mut setupcodebegin,
-        ptr::null_mut(),
-        &mut base64,
-    );
-
-    assert!(!ok);
-    free(buf_0 as *mut libc::c_void);
-    buf_0 =
-        strdup(b"foo \n -----BEGIN PGP MESSAGE-----\n  Passphrase-BeGIN  :  23 \n  \n base64-567 \r\n abc \n  -----END PGP MESSAGE-----\n\n\n\x00"
-                   as *const u8 as *const libc::c_char);
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        &mut setupcodebegin,
-        ptr::null_mut(),
-        &mut base64,
-    );
-    assert!(ok);
-    assert_eq!(headerline, "-----BEGIN PGP MESSAGE-----");
-
-    assert!(!setupcodebegin.is_null());
-    assert_eq!(
-        strcmp(
-            setupcodebegin,
-            b"23\x00" as *const u8 as *const libc::c_char,
-        ),
-        0
-    );
-
-    assert!(!base64.is_null());
-    assert_eq!(as_str(base64 as *const libc::c_char), "base64-567 \n abc",);
-
-    free(buf_0 as *mut libc::c_void);
-
-    buf_0 =
-        strdup(b"-----BEGIN PGP PRIVATE KEY BLOCK-----\n Autocrypt-Prefer-Encrypt :  mutual \n\nbase64\n-----END PGP PRIVATE KEY BLOCK-----\x00"
-                   as *const u8 as *const libc::c_char);
-    let ok = dc_split_armored_data(
-        buf_0,
-        &mut headerline,
-        ptr::null_mut(),
-        &mut preferencrypt,
-        &mut base64,
-    );
-    assert!(ok);
-    assert_eq!(headerline, "-----BEGIN PGP PRIVATE KEY BLOCK-----");
-    assert!(!preferencrypt.is_null());
-    assert_eq!(
-        strcmp(
-            preferencrypt,
-            b"mutual\x00" as *const u8 as *const libc::c_char,
-        ),
-        0
-    );
-
-    assert!(!base64.is_null());
-    assert_eq!(as_str(base64 as *const libc::c_char), "base64",);
-
-    free(buf_0 as *mut libc::c_void);
-
    // Cant check, no configured context
    // assert!(dc_is_configured(context) != 0, "Missing configured context");

@@ -232,11 +100,11 @@ unsafe fn stress_functions(context: &Context) {
 #[test]
 #[ignore] // is too expensive
 fn test_encryption_decryption() {
-    let (public_key, private_key) = dc_pgp_create_keypair("foo@bar.de").unwrap();
+    let (public_key, private_key) = pgp::create_keypair("foo@bar.de").unwrap();

    private_key.split_key().unwrap();

-    let (public_key2, private_key2) = dc_pgp_create_keypair("two@zwo.de").unwrap();
+    let (public_key2, private_key2) = pgp::create_keypair("two@zwo.de").unwrap();

    assert_ne!(public_key, public_key2);

@@ -245,11 +113,11 @@ fn test_encryption_decryption() {
    keyring.add_owned(public_key.clone());
    keyring.add_ref(&public_key2);

-    let ctext_signed = dc_pgp_pk_encrypt(original_text, &keyring, Some(&private_key)).unwrap();
+    let ctext_signed = pgp::pk_encrypt(original_text, &keyring, Some(&private_key)).unwrap();
    assert!(!ctext_signed.is_empty());
    assert!(ctext_signed.starts_with("-----BEGIN PGP MESSAGE-----"));

-    let ctext_unsigned = dc_pgp_pk_encrypt(original_text, &keyring, None).unwrap();
+    let ctext_unsigned = pgp::pk_encrypt(original_text, &keyring, None).unwrap();
    assert!(!ctext_unsigned.is_empty());
    assert!(ctext_unsigned.starts_with("-----BEGIN PGP MESSAGE-----"));

@@ -264,7 +132,7 @@ fn test_encryption_decryption() {

    let mut valid_signatures: HashSet<String> = Default::default();

-    let plain = dc_pgp_pk_decrypt(
+    let plain = pgp::pk_decrypt(
        ctext_signed.as_bytes(),
        &keyring,
        &public_keyring,
@@ -278,7 +146,7 @@ fn test_encryption_decryption() {
    valid_signatures.clear();

    let empty_keyring = Keyring::default();
-    let plain = dc_pgp_pk_decrypt(
+    let plain = pgp::pk_decrypt(
        ctext_signed.as_bytes(),
        &keyring,
        &empty_keyring,
@@ -290,7 +158,7 @@ fn test_encryption_decryption() {

    valid_signatures.clear();

-    let plain = dc_pgp_pk_decrypt(
+    let plain = pgp::pk_decrypt(
        ctext_signed.as_bytes(),
        &keyring,
        &public_keyring2,
@@ -304,7 +172,7 @@ fn test_encryption_decryption() {

    public_keyring2.add_ref(&public_key);

-    let plain = dc_pgp_pk_decrypt(
+    let plain = pgp::pk_decrypt(
        ctext_signed.as_bytes(),
        &keyring,
        &public_keyring2,
@@ -316,7 +184,7 @@ fn test_encryption_decryption() {

    valid_signatures.clear();

-    let plain = dc_pgp_pk_decrypt(
+    let plain = pgp::pk_decrypt(
        ctext_unsigned.as_bytes(),
        &keyring,
        &public_keyring,
@@ -333,8 +201,7 @@ fn test_encryption_decryption() {
    let mut public_keyring = Keyring::default();
    public_keyring.add_ref(&public_key);

-    let plain =
-        dc_pgp_pk_decrypt(ctext_signed.as_bytes(), &keyring, &public_keyring, None).unwrap();
+    let plain = pgp::pk_decrypt(ctext_signed.as_bytes(), &keyring, &public_keyring, None).unwrap();

    assert_eq!(plain, original_text);
 }
Author	SHA1	Message	Date
holger krekel	828b4b4a8c	cargo-fmt only	2019-10-10 01:33:15 +02:00
holger krekel	f12893b87e	make dc_str_from_clist safe and return a string instead of c-string -- this allows to remove some unsafe and now unneccessary cleanup code	2019-10-10 01:33:09 +02:00
B. Petersen	e1fc5863c2	target comments of @hpk42	2019-10-10 00:29:52 +02:00
B. Petersen	f0791149e6	document dc_str_unref()	2019-10-10 00:29:52 +02:00
B. Petersen	297b032bdc	fix doxygen, some rewording	2019-10-10 00:29:52 +02:00
holger krekel	98180c175d	make sure c-doc upload dirs exist even if branch name has / in it	2019-10-10 00:23:36 +02:00
dignifiedquire	46e8a436cb	updates and fixes	2019-10-10 00:23:36 +02:00
dignifiedquire	dc2cf8ecfc	unify naming in pgp	2019-10-10 00:23:36 +02:00
dignifiedquire	fd69ebfd1f	fix and cleanup tests	2019-10-10 00:23:36 +02:00
dignifiedquire	03979fdc51	wip	2019-10-10 00:23:36 +02:00
holger krekel	77a7efc920	fix #694 by forking lettre and avoiding extra NOOP Smtp commands for connection checking. If this works out and fixes our problem, we can submit upstream.	2019-10-09 18:25:41 +02:00
björn petersen	de604e744e	Merge pull request #703 from deltachat/fix-strncasecmp fix(mmime): correct implementation of strncasecmp	2019-10-09 17:31:41 +02:00
holger krekel	24c0a833bd	address @flub comments	2019-10-09 15:59:31 +02:00
holger krekel	45f011c63c	expose and test set_stock_translation to Python	2019-10-09 15:59:31 +02:00
holger krekel	bc86201b44	error out if %1 %2 replacements are not contained in default english version	2019-10-09 15:59:31 +02:00
holger krekel	b82af9fff3	introduce set_stock_translation and remove call to DC_EVENT_GET_STRING	2019-10-09 15:59:31 +02:00
dignifiedquire	3a1e74a306	fix(mmime): correct implementation of strncasecmp Closes #523	2019-10-09 14:27:15 +02:00
Alexander Krotov	e4cca92910	Simplify to_string_lossy() Call .to_string_lossy() without trying .to_str() first.	2019-10-09 08:56:02 +02:00
holger krekel	102220834c	address https://github.com/deltachat/deltachat-ios/issues/328 and don't escalate xml-parsing errors to users through error!	2019-10-08 23:09:03 +02:00