add provider info function

2026-06-28 18:46:35 +03:00 · 2019-09-04 16:51:28 +02:00
58 changed files with 3983 additions and 3421 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -110,19 +110,6 @@ dependencies = [
 "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "bit-set"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bit-vec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "bit-vec"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "bitfield"
 version = "0.13.2"
@@ -234,7 +221,7 @@ name = "c2-chacha"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -395,7 +382,7 @@ 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)",
 "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)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "memoffset 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -414,7 +401,7 @@ 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)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -487,10 +474,9 @@ dependencies = [
 "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "image-meta 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "imap 1.0.2 (git+https://github.com/jonhoo/rust-imap?rev=281d2eb8ab50dc656ceff2ae749ca5045f334e15)",
+ "imap 1.0.2 (git+https://github.com/jonhoo/rust-imap?rev=31e2490d2203a837d8830736bcb183831ec4894d)",
 "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)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "lettre 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "mmime 0.1.2-alpha.0 (git+https://github.com/dignifiedquire/mmime?rev=bccd2c2)",
@@ -503,7 +489,6 @@ dependencies = [
 "pkg-config 0.3.15 (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)",
 "quick-xml 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "r2d2 0.8.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "r2d2_sqlite 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -522,6 +507,17 @@ dependencies = [
 "thread-local-object 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "deltachat-provider-overview"
+version = "0.1.0"
+dependencies = [
+ "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
+ "yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "deltachat_derive"
 version = "0.1.0"
@@ -535,9 +531,11 @@ name = "deltachat_ffi"
 version = "1.0.0-alpha.4"
 dependencies = [
 "deltachat 1.0.0-alpha.4",
+ "deltachat-provider-overview 0.1.0",
 "human-panic 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -806,6 +804,11 @@ name = "glob"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"

+[[package]]
+name = "glob"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "h2"
 version = "0.1.26"
@@ -964,24 +967,23 @@ dependencies = [
 [[package]]
 name = "imap"
 version = "1.0.2"
-source = "git+https://github.com/jonhoo/rust-imap?rev=281d2eb8ab50dc656ceff2ae749ca5045f334e15#281d2eb8ab50dc656ceff2ae749ca5045f334e15"
+source = "git+https://github.com/jonhoo/rust-imap?rev=31e2490d2203a837d8830736bcb183831ec4894d#31e2490d2203a837d8830736bcb183831ec4894d"
 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)",
 "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "imap-proto 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "imap-proto 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
 name = "imap-proto"
-version = "0.9.0"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -1011,11 +1013,6 @@ name = "itoa"
 version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
-name = "jetscii"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "keccak"
 version = "0.1.0"
@@ -1032,7 +1029,7 @@ dependencies = [

 [[package]]
 name = "lazy_static"
-version = "1.4.0"
+version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
@@ -1052,18 +1049,6 @@ dependencies = [
 "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "lexical-core"
-version = "0.4.3"
-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)",
- "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)",
- "stackvector 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "libc"
 version = "0.2.62"
@@ -1231,7 +1216,7 @@ dependencies = [
 "charset 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "chrono 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
 "hex 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)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1242,7 +1227,7 @@ name = "native-tls"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (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)",
@@ -1290,23 +1275,13 @@ dependencies = [
 "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "nom"
-version = "5.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "lexical-core 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "num-bigint-dig"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1381,7 +1356,7 @@ dependencies = [
 "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "cfg-if 0.1.9 (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)",
+ "lazy_static 1.3.0 (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)",
 ]
@@ -1551,7 +1526,7 @@ dependencies = [
 "flate2 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 "generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "hex 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)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "md-5 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1667,25 +1642,6 @@ dependencies = [
 "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "proptest"
-version = "0.9.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bit-set 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "rusty-fork 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "publicsuffix"
 version = "1.5.2"
@@ -1693,7 +1649,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "error-chain 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -2012,7 +1968,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-bigint-dig 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
 "num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2059,17 +2015,6 @@ dependencies = [
 "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

-[[package]]
-name = "rusty-fork"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "wait-timeout 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rustyline"
 version = "4.1.0"
@@ -2109,7 +2054,7 @@ name = "schannel"
 version = "0.1.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

@@ -2282,20 +2227,6 @@ name = "stable_deref_trait"
 version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
-name = "stackvector"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "static_assertions"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "stream-cipher"
 version = "0.3.0"
@@ -2430,7 +2361,7 @@ name = "thread_local"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

 [[package]]
@@ -2506,7 +2437,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "futures 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "mio 0.6.19 (registry+https://github.com/rust-lang/crates.io-index)",
 "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2651,14 +2582,6 @@ name = "unicode-xid"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
-name = "unreachable"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "unsafe-any"
 version = "0.4.2"
@@ -2714,14 +2637,6 @@ name = "void"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"

-[[package]]
-name = "wait-timeout"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "walkdir"
 version = "2.2.9"
@@ -2836,6 +2751,14 @@ dependencies = [
 "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "yaml-rust"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "zeroize"
 version = "0.6.0"
@@ -2869,8 +2792,6 @@ dependencies = [
 "checksum backtrace 0.3.34 (registry+https://github.com/rust-lang/crates.io-index)" = "b5164d292487f037ece34ec0de2fcede2faa162f085dd96d2385ab81b12765ba"
 "checksum backtrace-sys 0.1.31 (registry+https://github.com/rust-lang/crates.io-index)" = "82a830b4ef2d1124a711c71d263c5abdc710ef8e907bd508c88be475cebc422b"
 "checksum base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0b25d992356d2eb0ed82172f5248873db5560c4721f564b13cb5193bda5e668e"
-"checksum bit-set 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e84c238982c4b1e1ee668d136c510c67a13465279c0cb367ea6baf6310620a80"
-"checksum bit-vec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "f59bbe95d4e52a6398ec21238d31577f2b28a9d86807f06ca59d191d8440d0bb"
 "checksum bitfield 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)" = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
 "checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
 "checksum blake2b_simd 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "461f4b879a8eb70c1debf7d0788a9a5ff15f1ea9d25925fea264ef4258bed6b2"
@@ -2946,6 +2867,7 @@ dependencies = [
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum getrandom 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "2512b3191f22e2763a5db387f1c9409379772e2050841722eb4a8c4f497bf096"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
+"checksum glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 "checksum h2 0.1.26 (registry+https://github.com/rust-lang/crates.io-index)" = "a5b34c246847f938a410a03c5458c7fee2274436675e76d8b903c08efc29c462"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
 "checksum hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77"
@@ -2960,18 +2882,16 @@ dependencies = [
 "checksum ident_case 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 "checksum idna 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "38f09e0f0b1fb55fdee1f17470ad800da77af5186a1a76c026b679358b7e844e"
 "checksum image-meta 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b00861cbbb254a627d8acc0cec786b484297d896ab8f20fdc8e28536a3e918ef"
-"checksum imap 1.0.2 (git+https://github.com/jonhoo/rust-imap?rev=281d2eb8ab50dc656ceff2ae749ca5045f334e15)" = "<none>"
-"checksum imap-proto 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1b92ca529b24c5f80a950abe993d3883df6fe6791d4a46b1fda1eb339796c589"
+"checksum imap 1.0.2 (git+https://github.com/jonhoo/rust-imap?rev=31e2490d2203a837d8830736bcb183831ec4894d)" = "<none>"
+"checksum imap-proto 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9a588218700a1f56790d585596d5edd879dd19c2fc554b34277e1c999249d787"
 "checksum indexmap 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7e81a7c05f79578dbc15793d8b619db9ba32b4577003ef3af1a91c416798c58d"
 "checksum iovec 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dbe6e417e7d0975db6512b90796e8ce223145ac4e33c377e4a42882a0e88bb08"
 "checksum itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5b8467d9c1cebe26feb08c640139247fac215782d35371ade9a2136ed6085358"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
-"checksum jetscii 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "5f25cca2463cb19dbb1061eb3bd38a8b5e4ce1cc5a5a9fc0e02de486d92b9b05"
 "checksum keccak 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "67c21572b4949434e4fc1e1978b99c5f77064153c59d998bf13ecd96fb5ecba7"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-"checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+"checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
 "checksum lettre 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c66afaa5dfadbb81d4e00fd1d1ab057c7cd4c799c5a44e0009386d553587e728"
-"checksum lexical-core 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b8b0f90c979adde96d19eb10eb6431ba0c441e2f9e9bdff868b2f6f5114ff519"
 "checksum libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)" = "34fcd2c08d2f832f376f4173a231990fa5aef4e99fb569867318a227ef4c06ba"
 "checksum libsqlite3-sys 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5e5b95e89c330291768dc840238db7f9e204fd208511ab6319b56193a7f2ae25"
 "checksum linked-hash-map 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ae91b68aebc4ddb91978b11a1b02ddd8602a05ec19002801c5666000e05e0f83"
@@ -2997,7 +2917,6 @@ dependencies = [
 "checksum nix 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4dbdc256eaac2e3bd236d93ad999d3479ef775c863dbda3068c4006a92eec51b"
 "checksum nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "2f9667ddcc6cc8a43afc9b7917599d7216aa09c463919ea32c59ed6cac8bc945"
 "checksum nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2ad2a91a8e869eeb30b9cb3119ae87773a8f4ae617f41b1eb9c154b2905f7bd6"
-"checksum nom 5.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c618b63422da4401283884e6668d39f819a106ef51f5f59b81add00075da35ca"
 "checksum num-bigint-dig 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3cd60678022301da54082fcc383647fc895cba2795f868c871d58d29c8922595"
 "checksum num-derive 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "eafd0b45c5537c3ba526f79d3e75120036502bebacbb3f3220914067ce39dbf2"
 "checksum num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "b85e541ef8255f6cf42bbfe4ef361305c6c135d10919ecc26126c4e5ae94bc09"
@@ -3034,7 +2953,6 @@ dependencies = [
 "checksum proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e688f31d92ffd7c1ddc57a1b4e6d773c0f2a14ee437a4b0a4f5a69c80eb221c8"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
 "checksum proc-macro2 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4c5c2380ae88876faae57698be9e9775e3544decad214599c3a6266cca6ac802"
-"checksum proptest 0.9.4 (registry+https://github.com/rust-lang/crates.io-index)" = "cf147e022eacf0c8a054ab864914a7602618adba841d800a9a9868a5237a529f"
 "checksum publicsuffix 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5afecba86dcf1e4fd610246f89899d1924fe12e1e89f555eb7c7f710f3c5ad1d"
 "checksum pulldown-cmark 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "eef52fac62d0ea7b9b4dc7da092aa64ea7ec3d90af6679422d3d7e0e14b6ee15"
 "checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
@@ -3072,7 +2990,6 @@ dependencies = [
 "checksum rust-argon2 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca4eaef519b494d1f2848fc602d18816fed808a981aedf4f1f00ceb7c9d32cf"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-"checksum rusty-fork 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3dd93264e10c577503e926bd1430193eeb5d21b059148910082245309b424fae"
 "checksum rustyline 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0f47ea1ceb347d2deae482d655dc8eef4bd82363d3329baffa3818bd76fea48b"
 "checksum ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c92464b447c0ee8c4fb3824ecc8383b81717b9f1e74ba2e72540aef7b9f82997"
 "checksum safemem 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d2b08423011dae9a5ca23f07cf57dac3857f5c885d352b76f6d95f4aea9434d0"
@@ -3098,8 +3015,6 @@ dependencies = [
 "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 stackvector 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "4dade1e9ad1ce13baaba168a04cdefb5c0cbc100242a4035d6dfa9c64348f9c5"
-"checksum static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7f3eb36b47e512f8f1c9e3d10c2c1965bc992bd9cdb024fa581e2194501c83d3"
 "checksum stream-cipher 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8861bc80f649f5b4c9bd38b696ae9af74499d479dbfb327f0607de6b326a36bc"
 "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"
@@ -3140,7 +3055,6 @@ dependencies = [
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
-"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 "checksum unsafe-any 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f30360d7979f5e9c6e6cea48af192ea8fab4afb3cf72597154b8f08935bc9c7f"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum utf8parse 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8772a4ccbb4e89959023bc5b7cb8623a795caa7092d99f3aa9501b9484d4557d"
@@ -3149,7 +3063,6 @@ dependencies = [
 "checksum vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-"checksum wait-timeout 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
 "checksum walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9658c94fa8b940eab2250bd5a457f9c48b748420d71293b165c8cdbe2f55f71e"
 "checksum want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
 "checksum wasi 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fd5442abcac6525a045cc8c795aedb60da7a2e5e89c7bf18a0d5357849bb23c7"
@@ -3165,5 +3078,6 @@ dependencies = [
 "checksum winutil 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7daf138b6b14196e3830a588acf1e86966c694d3e8fb026fb105b8b5dca07e6e"
 "checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
 "checksum x25519-dalek 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7ee1585dc1484373cbc1cee7aafda26634665cf449436fd6e24bfd1fad230538"
+"checksum yaml-rust 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "65923dd1784f44da1d2c3dbbc5e822045628c590ba72123e1c73d3c230c4434d"
 "checksum zeroize 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e68403b858b6af538b11614e62dfe9ab2facba9f13a0cafb974855cfb495ec95"
 "checksum zeroize_derive 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3f07490820219949839d0027b965ffdd659d75be9220c00798762e36c6cd281"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ num-derive = "0.2.5"
 num-traits = "0.2.6"
 native-tls = "0.2.3"
 lettre = "0.9.0"
-imap = { git = "https://github.com/jonhoo/rust-imap", rev = "281d2eb8ab50dc656ceff2ae749ca5045f334e15" }
+imap = { git = "https://github.com/jonhoo/rust-imap", rev = "31e2490d2203a837d8830736bcb183831ec4894d" }
 mmime = { git = "https://github.com/dignifiedquire/mmime", rev = "bccd2c2" }
 base64 = "0.10"
 charset = "0.1"
@@ -35,7 +35,7 @@ failure = "0.1.5"
 failure_derive = "0.1.5"
 # TODO: make optional
 rustyline = "4.1.0"
-lazy_static = "1.4.0"
+lazy_static = "1.3.0"
 regex = "1.1.6"
 rusqlite = { version = "0.20", features = ["bundled"] }
 r2d2_sqlite = "0.12.0"
@@ -50,13 +50,11 @@ image-meta = "0.1.0"
 quick-xml = "0.15.0"
 escaper = "0.1.0"
 bitflags = "1.1.0"
-jetscii = "0.4.4"

 [dev-dependencies]
 tempfile = "3.0"
 pretty_assertions = "0.6.1"
 pretty_env_logger = "0.3.0"
-proptest = "0.9.4"

 [workspace]
 members = [
--- a/ci_scripts/run_all.sh
+++ b/ci_scripts/run_all.sh
@@ -41,8 +41,7 @@ if [ -n "$TESTS" ]; then
    # see https://github.com/deltachat/deltachat-core-rust/issues/331
    # unset DCC_PY_LIVECONFIG

-    tox --workdir "$TOXWORKDIR" -e lint,py35,py36,py37,auditwheels -- -k "not qr"
-    tox --workdir "$TOXWORKDIR" -e py35,py36,py37 -- -k "qr"
+    tox --workdir "$TOXWORKDIR" -e lint,py35,py36,py37,auditwheels
    popd
 fi

--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -20,6 +20,10 @@ libc = "0.2"
 human-panic = "1.0.1"
 num-traits = "0.2.6"

+deltachat-provider-overview = { path = "../../../deltachat-provider-overview" }
+# serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
 [features]
 default = ["vendored", "nightly", "ringbuf"]
 vendored = ["deltachat/vendored"]
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -441,7 +441,11 @@ char*           dc_get_info                  (dc_context_t* context);
 */
 char*           dc_get_oauth2_url            (dc_context_t* context, const char* addr, const char* redirect_uri);

+/**
+ * Get the provider information from our provider overview as json object.
+ */

+char*           dc_get_json_provider_info_from_email  (char* email);

 // connect

--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
--- a/deltachat_derive/src/lib.rs
+++ b/deltachat_derive/src/lib.rs
@@ -36,7 +36,7 @@ pub fn from_sql_derive(input: TokenStream) -> TokenStream {
        impl rusqlite::types::FromSql for #name {
            fn column_result(col: rusqlite::types::ValueRef) -> rusqlite::types::FromSqlResult<Self> {
                let inner = rusqlite::types::FromSql::column_result(col)?;
-                Ok(num_traits::FromPrimitive::from_i64(inner).unwrap_or_default())
+                num_traits::FromPrimitive::from_i64(inner).ok_or(rusqlite::types::FromSqlError::InvalidType)
            }
        }
    };
--- a/examples/repl/cmdline.rs
+++ b/examples/repl/cmdline.rs
@@ -28,10 +28,10 @@ use num_traits::FromPrimitive;
 /// Argument is a bitmask, executing single or multiple actions in one call.
 /// e.g. bitmask 7 triggers actions definded with bits 1, 2 and 4.
 pub unsafe fn dc_reset_tables(context: &Context, bits: i32) -> i32 {
-    info!(context, "Resetting tables ({})...", bits);
+    info!(context, 0, "Resetting tables ({})...", bits);
    if 0 != bits & 1 {
        sql::execute(context, &context.sql, "DELETE FROM jobs;", params![]).unwrap();
-        info!(context, "(1) Jobs reset.");
+        info!(context, 0, "(1) Jobs reset.");
    }
    if 0 != bits & 2 {
        sql::execute(
@@ -41,11 +41,11 @@ pub unsafe fn dc_reset_tables(context: &Context, bits: i32) -> i32 {
            params![],
        )
        .unwrap();
-        info!(context, "(2) Peerstates reset.");
+        info!(context, 0, "(2) Peerstates reset.");
    }
    if 0 != bits & 4 {
        sql::execute(context, &context.sql, "DELETE FROM keypairs;", params![]).unwrap();
-        info!(context, "(4) Private keypairs reset.");
+        info!(context, 0, "(4) Private keypairs reset.");
    }
    if 0 != bits & 8 {
        sql::execute(
@@ -84,7 +84,7 @@ pub unsafe fn dc_reset_tables(context: &Context, bits: i32) -> i32 {
        )
        .unwrap();
        sql::execute(context, &context.sql, "DELETE FROM leftgrps;", params![]).unwrap();
-        info!(context, "(8) Rest but server config reset.");
+        info!(context, 0, "(8) Rest but server config reset.");
    }

    context.call_cb(Event::MSGS_CHANGED, 0, 0);
@@ -122,7 +122,7 @@ unsafe fn dc_poke_eml_file(context: &Context, filename: *const libc::c_char) ->
 /// @return 1=success, 0=error.
 unsafe fn poke_spec(context: &Context, spec: *const libc::c_char) -> libc::c_int {
    if !context.sql.is_open() {
-        error!(context, "Import: Database not opened.");
+        error!(context, 0, "Import: Database not opened.");
        return 0;
    }

@@ -143,7 +143,7 @@ unsafe fn poke_spec(context: &Context, spec: *const libc::c_char) -> libc::c_int
    } else {
        let rs = context.sql.get_config(context, "import_spec");
        if rs.is_none() {
-            error!(context, "Import: No file or folder given.");
+            error!(context, 0, "Import: No file or folder given.");
            ok_to_continue = false;
        } else {
            ok_to_continue = true;
@@ -166,6 +166,7 @@ unsafe fn poke_spec(context: &Context, spec: *const libc::c_char) -> libc::c_int
            if dir.is_err() {
                error!(
                    context,
+                    0,
                    "Import: Cannot open directory \"{}\".",
                    as_str(real_spec),
                );
@@ -181,7 +182,7 @@ unsafe fn poke_spec(context: &Context, spec: *const libc::c_char) -> libc::c_int
                    let name = name_f.to_string_lossy();
                    if name.ends_with(".eml") {
                        let path_plus_name = format!("{}/{}", as_str(real_spec), name);
-                        info!(context, "Import: {}", path_plus_name);
+                        info!(context, 0, "Import: {}", path_plus_name);
                        let path_plus_name_c = CString::yolo(path_plus_name);
                        if 0 != dc_poke_eml_file(context, path_plus_name_c.as_ptr()) {
                            read_cnt += 1
@@ -194,6 +195,7 @@ unsafe fn poke_spec(context: &Context, spec: *const libc::c_char) -> libc::c_int
        if ok_to_continue2 {
            info!(
                context,
+                0,
                "Import: {} items read from \"{}\".",
                read_cnt,
                as_str(real_spec)
@@ -226,6 +228,7 @@ unsafe fn log_msg(context: &Context, prefix: impl AsRef<str>, msg: &Message) {
    let msgtext = dc_msg_get_text(msg);
    info!(
        context,
+        0,
        "{}#{}{}{}: {} (Contact#{}): {} {}{}{}{} [{}]",
        prefix.as_ref(),
        dc_msg_get_id(msg) as libc::c_int,
@@ -265,6 +268,7 @@ unsafe fn log_msglist(context: &Context, msglist: &Vec<u32>) -> Result<(), Error
        if msg_id == 9 as libc::c_uint {
            info!(
                context,
+                0,
                "--------------------------------------------------------------------------------"
            );

@@ -272,7 +276,7 @@ unsafe fn log_msglist(context: &Context, msglist: &Vec<u32>) -> Result<(), Error
        } else if msg_id > 0 {
            if lines_out == 0 {
                info!(
-                    context,
+                    context, 0,
                    "--------------------------------------------------------------------------------",
                );
                lines_out += 1
@@ -284,7 +288,7 @@ unsafe fn log_msglist(context: &Context, msglist: &Vec<u32>) -> Result<(), Error
    if lines_out > 0 {
        info!(
            context,
-            "--------------------------------------------------------------------------------"
+            0, "--------------------------------------------------------------------------------"
        );
    }
    Ok(())
@@ -301,7 +305,7 @@ unsafe fn log_contactlist(context: &Context, contacts: &Vec<u32>) {
        if let Ok(contact) = Contact::get_by_id(context, contact_id) {
            let name = contact.get_name();
            let addr = contact.get_addr();
-            let verified_state = contact.is_verified(context);
+            let verified_state = contact.is_verified();
            let verified_str = if VerifiedStatus::Unverified != verified_state {
                if verified_state == VerifiedStatus::BidirectVerified {
                    " √√"
@@ -333,11 +337,17 @@ unsafe fn log_contactlist(context: &Context, contacts: &Vec<u32>) {
                );
            }

-            info!(context, "Contact#{}: {}{}", contact_id, line, line2);
+            info!(context, 0, "Contact#{}: {}{}", contact_id, line, line2);
        }
    }
 }

+static mut S_IS_AUTH: libc::c_int = 0;
+
+pub unsafe fn dc_cmdline_skip_auth() {
+    S_IS_AUTH = 1;
+}
+
 fn chat_prefix(chat: &Chat) -> &'static str {
    chat.typ.into()
 }
@@ -418,7 +428,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                 send <text>\n\
                 send-garbage\n\
                 sendimage <file> [<text>]\n\
-                 sendfile <file> [<text>]\n\
+                 sendfile <file>\n\
                 draft [<text>]\n\
                 listmedia\n\
                 archive <chat-id>\n\
@@ -451,6 +461,20 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                 ============================================="
            ),
        },
+        "auth" => {
+            if 0 == S_IS_AUTH {
+                let is_pw = context
+                    .get_config(config::Config::MailPw)
+                    .unwrap_or_default();
+                if arg1 == is_pw {
+                    S_IS_AUTH = 1;
+                } else {
+                    println!("Bad password.");
+                }
+            } else {
+                println!("Already authorized.");
+            }
+        }
        "open" => {
            ensure!(!arg1.is_empty(), "Argument <file> missing");
            dc_close(context);
@@ -476,7 +500,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
            let msg_id: u32 = arg1.parse()?;
            let msg = dc_get_msg(context, msg_id)?;
            if dc_msg_is_setupmessage(&msg) {
-                let setupcodebegin = dc_msg_get_setupcodebegin(context, &msg);
+                let setupcodebegin = dc_msg_get_setupcodebegin(&msg);
                println!(
                    "The setup code for setup message Msg#{} starts with: {}",
                    msg_id,
@@ -492,7 +516,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                !arg1.is_empty() && !arg2.is_empty(),
                "Arguments <msg-id> <setup-code> expected"
            );
-            if !dc_continue_key_transfer(context, arg1.parse()?, arg2_c) {
+            if 0 == dc_continue_key_transfer(context, arg1.parse()?, arg2_c) {
                bail!("Continue key transfer failed");
            }
        }
@@ -550,8 +574,9 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
        }
        "get" => {
            ensure!(!arg1.is_empty(), "Argument <key> missing.");
-            let val = context.get_config_from_str(&arg1);
-            println!("{}={:?}", &arg1.to_string(), val);
+            let key = config::Config::from_str(&arg1)?;
+            let val = context.get_config(key);
+            println!("{}={:?}", key, val);
        }
        "info" => {
            println!("{}", to_string(dc_get_info(context)));
@@ -574,16 +599,17 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
            let cnt = chatlist.len();
            if cnt > 0 {
                info!(
-                    context,
+                    context, 0,
                    "================================================================================"
                );

                for i in (0..cnt).rev() {
                    let chat = Chat::load_from_db(context, chatlist.get_chat_id(i))?;
-                    let temp_subtitle = chat.get_subtitle(context);
+                    let temp_subtitle = chat.get_subtitle();
                    let temp_name = chat.get_name();
                    info!(
                        context,
+                        0,
                        "{}#{}: {} [{}] [{} fresh]",
                        chat_prefix(&chat),
                        chat.get_id(),
@@ -591,7 +617,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                        temp_subtitle,
                        chat::get_fresh_msg_cnt(context, chat.get_id()),
                    );
-                    let lot = chatlist.get_summary(context, i, Some(&chat));
+                    let lot = chatlist.get_summary(i, Some(&chat));
                    let statestr = if chat.is_archived() {
                        " [Archived]"
                    } else {
@@ -608,6 +634,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                    let text2 = lot.get_text2();
                    info!(
                        context,
+                        0,
                        "{}{}{}{} [{}]{}",
                        text1.unwrap_or(""),
                        if text1.is_some() { ": " } else { "" },
@@ -621,13 +648,13 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                        },
                    );
                    info!(
-                        context,
+                        context, 0,
                        "================================================================================"
                    );
                }
            }
            if location::is_sending_locations_to_chat(context, 0 as uint32_t) {
-                info!(context, "Location streaming enabled.");
+                info!(context, 0, "Location streaming enabled.");
            }
            println!("{} chats", cnt);
        }
@@ -646,10 +673,11 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
            let sel_chat = sel_chat.as_ref().unwrap();

            let msglist = chat::get_chat_msgs(context, sel_chat.get_id(), 0x1, 0);
-            let temp2 = sel_chat.get_subtitle(context);
+            let temp2 = sel_chat.get_subtitle();
            let temp_name = sel_chat.get_name();
            info!(
                context,
+                0,
                "{}#{}: {} [{}]{}",
                chat_prefix(sel_chat),
                sel_chat.get_id(),
@@ -745,7 +773,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
            ensure!(sel_chat.is_some(), "No chat selected.");

            let contacts = chat::get_chat_contacts(context, sel_chat.as_ref().unwrap().get_id());
-            info!(context, "Memberlist:");
+            info!(context, 0, "Memberlist:");

            log_contactlist(context, &contacts);
            println!(
@@ -773,6 +801,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                let marker = location.marker.as_ref().unwrap_or(&default_marker);
                info!(
                    context,
+                    0,
                    "Loc#{}: {}: lat={} lng={} acc={} Chat#{} Contact#{} Msg#{} {}",
                    location.location_id,
                    dc_timestamp_to_str(location.timestamp),
@@ -786,7 +815,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
                );
            }
            if locations.is_empty() {
-                info!(context, "No locations.");
+                info!(context, 0, "No locations.");
            }
        }
        "sendlocations" => {
@@ -833,17 +862,18 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
        }
        "sendimage" | "sendfile" => {
            ensure!(sel_chat.is_some(), "No chat selected.");
-            ensure!(!arg1.is_empty(), "No file given.");
+            ensure!(!arg1.is_empty() && !arg2.is_empty(), "No file given.");

-            let mut msg = dc_msg_new(if arg0 == "sendimage" {
-                Viewtype::Image
-            } else {
-                Viewtype::File
-            });
+            let mut msg = dc_msg_new(
+                context,
+                if arg0 == "sendimage" {
+                    Viewtype::Image
+                } else {
+                    Viewtype::File
+                },
+            );
            dc_msg_set_file(&mut msg, arg1_c, ptr::null());
-            if !arg2.is_empty() {
-                dc_msg_set_text(&mut msg, arg2_c);
-            }
+            dc_msg_set_text(&mut msg, arg2_c);
            chat::send_msg(context, sel_chat.as_ref().unwrap().get_id(), &mut msg)?;
        }
        "listmsgs" => {
@@ -864,7 +894,7 @@ pub unsafe fn dc_cmdline(context: &Context, line: &str) -> Result<(), failure::E
            ensure!(sel_chat.is_some(), "No chat selected.");

            if !arg1.is_empty() {
-                let mut draft = dc_msg_new(Viewtype::Text);
+                let mut draft = dc_msg_new(context, Viewtype::Text);
                dc_msg_set_text(&mut draft, arg1_c);
                chat::set_draft(
                    context,
--- a/examples/repl/main.rs
+++ b/examples/repl/main.rs
@@ -14,8 +14,6 @@ extern crate lazy_static;
 extern crate rusqlite;

 use std::borrow::Cow::{self, Borrowed, Owned};
-use std::io::{self, Write};
-use std::process::Command;
 use std::ptr;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex, RwLock};
@@ -24,10 +22,10 @@ use deltachat::config;
 use deltachat::configure::*;
 use deltachat::constants::*;
 use deltachat::context::*;
+use deltachat::dc_securejoin::*;
 use deltachat::dc_tools::*;
 use deltachat::job::*;
 use deltachat::oauth2::*;
-use deltachat::securejoin::*;
 use deltachat::types::*;
 use deltachat::x::*;
 use rustyline::completion::{Completer, FilenameCompleter, Pair};
@@ -389,6 +387,8 @@ impl Helper for DcHelper {}
 fn main_0(args: Vec<String>) -> Result<(), failure::Error> {
    let mut context = dc_context_new(Some(receive_event), ptr::null_mut(), Some("CLI".into()));

+    unsafe { dc_cmdline_skip_auth() };
+
    if args.len() == 2 {
        if unsafe { !dc_open(&mut context, &args[1], None) } {
            println!("Error: Cannot open {}.", args[0],);
@@ -495,7 +495,7 @@ unsafe fn handle_cmd(line: &str, ctx: Arc<RwLock<Context>>) -> Result<ExitResult
            configure(&ctx.read().unwrap());
        }
        "oauth2" => {
-            if let Some(addr) = ctx.read().unwrap().get_config(&config::Config::Addr) {
+            if let Some(addr) = ctx.read().unwrap().get_config(config::Config::Addr) {
                let oauth2_url = dc_get_oauth2_url(
                    &ctx.read().unwrap(),
                    &addr,
@@ -516,27 +516,30 @@ unsafe fn handle_cmd(line: &str, ctx: Arc<RwLock<Context>>) -> Result<ExitResult
        }
        "getqr" | "getbadqr" => {
            start_threads(ctx.clone());
-            if let Some(mut qr) =
-                dc_get_securejoin_qr(&ctx.read().unwrap(), arg1.parse().unwrap_or_default())
-            {
-                if !qr.is_empty() {
-                    if arg0 == "getbadqr" && qr.len() > 40 {
-                        qr.replace_range(12..22, "0000000000")
+            let qrstr =
+                dc_get_securejoin_qr(&ctx.read().unwrap(), arg1.parse().unwrap_or_default());
+            if !qrstr.is_null() && 0 != *qrstr.offset(0isize) as libc::c_int {
+                if arg0 == "getbadqr" && strlen(qrstr) > 40 {
+                    let mut i: libc::c_int = 12i32;
+                    while i < 22i32 {
+                        *qrstr.offset(i as isize) = '0' as i32 as libc::c_char;
+                        i += 1
                    }
-                    println!("{}", qr);
-                    let output = Command::new("qrencode")
-                        .args(&["-t", "ansiutf8", qr.as_str(), "-o", "-"])
-                        .output()
-                        .expect("failed to execute process");
-                    io::stdout().write_all(&output.stdout).unwrap();
-                    io::stderr().write_all(&output.stderr).unwrap();
                }
+                println!("{}", to_string(qrstr as *const _));
+                let syscmd = dc_mprintf(
+                    b"qrencode -t ansiutf8 \"%s\" -o -\x00" as *const u8 as *const libc::c_char,
+                    qrstr,
+                );
+                system(syscmd);
+                free(syscmd as *mut libc::c_void);
            }
+            free(qrstr as *mut libc::c_void);
        }
        "joinqr" => {
            start_threads(ctx.clone());
            if !arg0.is_empty() {
-                dc_join_securejoin(&ctx.read().unwrap(), arg1);
+                dc_join_securejoin(&ctx.read().unwrap(), arg1_c);
            }
        }
        "exit" | "quit" => return Ok(ExitResult::Exit),
--- a/examples/simple.rs
+++ b/examples/simple.rs
@@ -101,7 +101,7 @@ fn main() {
        let chats = Chatlist::try_load(&ctx, 0, None, None).unwrap();

        for i in 0..chats.len() {
-            let summary = chats.get_summary(&ctx, 0, None);
+            let summary = chats.get_summary(0, None);
            let text1 = summary.get_text1();
            let text2 = summary.get_text2();
            println!("chat: {} - {:?} - {:?}", i, text1, text2,);
--- a/proptest-regressions/dc_strencode.txt
+++ b/proptest-regressions/dc_strencode.txt
@@ -1,7 +0,0 @@
-# Seeds for failure cases proptest has generated in the past. It is
-# automatically read and these particular cases re-run before any
-# novel cases are generated.
-#
-# It is recommended to check this file in to source control so that
-# everyone who runs the test benefits from these saved cases.
-cc 679506fe9ac59df773f8cfa800fdab5f0a32fe49d2ab370394000a1aa5bc2a72 # shrinks to buf = "%0A"
--- a/proptest-regressions/dc_tools.txt
+++ b/proptest-regressions/dc_tools.txt
@@ -1,9 +0,0 @@
-# Seeds for failure cases proptest has generated in the past. It is
-# automatically read and these particular cases re-run before any
-# novel cases are generated.
-#
-# It is recommended to check this file in to source control so that
-# everyone who runs the test benefits from these saved cases.
-cc c310754465ee0261807b96fa9bcc4861ff9aa286e94667524b5960c69f9b6620 # shrinks to buf = "", approx_chars = 0, do_unwrap = false
-cc 5fd8d730b0a9cdf7308ce58818ca9aefc0255c9ba2a0878944fc48d43a67315b # shrinks to buf = "𑒀ὐ￠🜀\u{1e01b}A a🟠", approx_chars = 0, do_unwrap = false
-cc c6a0029a54137a4b9efc9ef2ea6d9a7dd1d60d1c937bb472b66a174618ba8013 # shrinks to buf = "𐠈0Aᝮa𫝀®!ꫛa¡0A𐢧00𐹠®A  丽ⷐએ  ", approx_chars = 0, do_unwrap = false
--- a/python/README.rst
+++ b/python/README.rst
@@ -65,7 +65,7 @@ Afterwards ``which python`` tells you that it comes out of the "venv"
 directory that contains all python install artifacts. Let's first
 install test tools::

-    pip install pytest pytest-timeout pytest-rerunfailures requests
+    pip install pytest pytest-timeout requests

 then cargo-build and install the deltachat bindings::

--- a/python/src/deltachat/account.py
+++ b/python/src/deltachat/account.py
@@ -14,7 +14,7 @@ except ImportError:
 import deltachat
 from . import const
 from .capi import ffi, lib
-from .cutil import as_dc_charpointer, from_dc_charpointer, iter_array, DCLot
+from .cutil import as_dc_charpointer, from_dc_charpointer, iter_array
 from .chatting import Contact, Chat, Message


@@ -329,56 +329,6 @@ class Account(object):
            raise RuntimeError("could not send out autocrypt setup message")
        return from_dc_charpointer(res)

-    def get_setup_contact_qr(self):
-        """ get/create Setup-Contact QR Code as ascii-string.
-
-        this string needs to be transferred to another DC account
-        in a second channel (typically used by mobiles with QRcode-show + scan UX)
-        where qr_setup_contact(qr) is called.
-        """
-        res = lib.dc_get_securejoin_qr(self._dc_context, 0)
-        return from_dc_charpointer(res)
-
-    def check_qr(self, qr):
-        """ check qr code and return :class:`ScannedQRCode` instance representing the result"""
-        res = ffi.gc(
-            lib.dc_check_qr(self._dc_context, as_dc_charpointer(qr)),
-            lib.dc_lot_unref
-        )
-        lot = DCLot(res)
-        if lot.state() == const.DC_QR_ERROR:
-            raise ValueError("invalid or unknown QR code: {}".format(lot.text1()))
-        return ScannedQRCode(lot)
-
-    def qr_setup_contact(self, qr):
-        """ setup contact and return a Chat after contact is established.
-
-        Note that this function may block for a long time as messages are exchanged
-        with the emitter of the QR code.  On success a :class:`deltachat.chatting.Chat` instance
-        is returned.
-        :param qr: valid "setup contact" QR code (all other QR codes will result in an exception)
-        """
-        assert self.check_qr(qr).is_ask_verifycontact()
-        chat_id = lib.dc_join_securejoin(self._dc_context, as_dc_charpointer(qr))
-        if chat_id == 0:
-            raise ValueError("could not setup secure contact")
-        return Chat(self, chat_id)
-
-    def qr_join_chat(self, qr):
-        """ join a chat group through a QR code.
-
-        Note that this function may block for a long time as messages are exchanged
-        with the emitter of the QR code.  On success a :class:`deltachat.chatting.Chat` instance
-        is returned which is the chat that we just joined.
-
-        :param qr: valid "join-group" QR code (all other QR codes will result in an exception)
-        """
-        assert self.check_qr(qr).is_ask_verifygroup()
-        chat_id = lib.dc_join_securejoin(self._dc_context, as_dc_charpointer(qr))
-        if chat_id == 0:
-            raise ValueError("could not join group")
-        return Chat(self, chat_id)
-
    def start_threads(self):
        """ start IMAP/SMTP threads (and configure account if it hasn't happened).

@@ -483,10 +433,6 @@ class EventLogger:
    def set_timeout(self, timeout):
        self._timeout = timeout

-    def consume_events(self, check_error=True):
-        while not self._event_queue.empty():
-            self.get()
-
    def get(self, timeout=None, check_error=True):
        timeout = timeout or self._timeout
        ev = self._event_queue.get(timeout=timeout)
@@ -546,18 +492,3 @@ def _destroy_dc_context(dc_context, dc_context_unref=lib.dc_context_unref):
        # we are deep into Python Interpreter shutdown,
        # so no need to clear the callback context mapping.
        pass
-
-
-class ScannedQRCode:
-    def __init__(self, dc_lot):
-        self._dc_lot = dc_lot
-
-    def is_ask_verifycontact(self):
-        return self._dc_lot.state() == const.DC_QR_ASK_VERIFYCONTACT
-
-    def is_ask_verifygroup(self):
-        return self._dc_lot.state() == const.DC_QR_ASK_VERIFYGROUP
-
-    @property
-    def contact_id(self):
-        return self._dc_lot.id()
--- a/python/src/deltachat/chatting.py
+++ b/python/src/deltachat/chatting.py
@@ -1,7 +1,6 @@
 """ chatting related objects: Contact, Chat, Message. """

 import mimetypes
-import os
 from . import props
 from .cutil import as_dc_charpointer, from_dc_charpointer, iter_array
 from .capi import lib, ffi
@@ -132,16 +131,6 @@ class Chat(object):
        """
        return lib.dc_chat_get_type(self._dc_chat)

-    def get_join_qr(self):
-        """ get/create Join-Group QR Code as ascii-string.
-
-        this string needs to be transferred to another DC account
-        in a second channel (typically used by mobiles with QRcode-show + scan UX)
-        where account.join_with_qrcode(qr) needs to be called.
-        """
-        res = lib.dc_get_securejoin_qr(self._dc_context, self.id)
-        return from_dc_charpointer(res)
-
    # ------  chat messaging API ------------------------------

    def send_text(self, text):
@@ -316,46 +305,3 @@ class Chat(object):
        return list(iter_array(
            dc_array, lambda id: Contact(self._dc_context, id))
        )
-
-    def set_profile_image(self, img_path):
-        """Set group profile image.
-
-        If the group is already promoted (any message was sent to the group),
-        all group members are informed by a special status message that is sent
-        automatically by this function.
-        :params img_path: path to image object
-        :raises ValueError: if profile image could not be set
-        :returns: None
-        """
-        assert os.path.exists(img_path), img_path
-        p = as_dc_charpointer(img_path)
-        res = lib.dc_set_chat_profile_image(self._dc_context, self.id, p)
-        if res != 1:
-            raise ValueError("Setting Profile Image {!r} failed".format(p))
-
-    def remove_profile_image(self):
-        """remove group profile image.
-
-        If the group is already promoted (any message was sent to the group),
-        all group members are informed by a special status message that is sent
-        automatically by this function.
-        :raises ValueError: if profile image could not be reset
-        :returns: None
-        """
-        res = lib.dc_set_chat_profile_image(self._dc_context, self.id, ffi.NULL)
-        if res != 1:
-            raise ValueError("Removing Profile Image failed")
-
-    def get_profile_image(self):
-        """Get group profile image.
-
-        For groups, this is the image set by any group member using
-        set_chat_profile_image(). For normal chats, this is the image
-        set by each remote user on their own using dc_set_config(context,
-        "selfavatar", image).
-        :returns: path to profile image, None if no profile image exists.
-        """
-        dc_res = lib.dc_chat_get_profile_image(self._dc_chat)
-        if dc_res == ffi.NULL:
-            return None
-        return from_dc_charpointer(dc_res)
--- a/python/src/deltachat/const.py
+++ b/python/src/deltachat/const.py
@@ -13,15 +13,6 @@ DC_GCL_NO_SPECIALS = 0x02
 DC_GCL_ADD_ALLDONE_HINT = 0x04
 DC_GCL_VERIFIED_ONLY = 0x01
 DC_GCL_ADD_SELF = 0x02
-DC_QR_ASK_VERIFYCONTACT = 200
-DC_QR_ASK_VERIFYGROUP = 202
-DC_QR_FPR_OK = 210
-DC_QR_FPR_MISMATCH = 220
-DC_QR_FPR_WITHOUT_ADDR = 230
-DC_QR_ADDR = 320
-DC_QR_TEXT = 330
-DC_QR_URL = 332
-DC_QR_ERROR = 400
 DC_CHAT_ID_DEADDROP = 1
 DC_CHAT_ID_TRASH = 3
 DC_CHAT_ID_MSGS_IN_CREATION = 4
@@ -78,13 +69,15 @@ DC_EVENT_IMEX_FILE_WRITTEN = 2052
 DC_EVENT_SECUREJOIN_INVITER_PROGRESS = 2060
 DC_EVENT_SECUREJOIN_JOINER_PROGRESS = 2061
 DC_EVENT_GET_STRING = 2091
+DC_EVENT_HTTP_GET = 2100
+DC_EVENT_HTTP_POST = 2110
 DC_EVENT_FILE_COPIED = 2055
 DC_EVENT_IS_OFFLINE = 2081
 # end const generated


 def read_event_defines(f):
-    rex = re.compile(r'#define\s+((?:DC_EVENT_|DC_QR|DC_MSG|DC_STATE_|DC_CONTACT_ID_|DC_GCL|DC_CHAT)\S+)\s+([x\d]+).*')
+    rex = re.compile(r'#define\s+((?:DC_EVENT_|DC_MSG|DC_STATE_|DC_CONTACT_ID_|DC_GCL|DC_CHAT)\S+)\s+([x\d]+).*')
    for line in f:
        m = rex.match(line)
        if m:
@@ -97,7 +90,7 @@ if __name__ == "__main__":
    if len(sys.argv) >= 2:
        deltah = sys.argv[1]
    else:
-        deltah = joinpath(dirname(dirname(dirname(here_dir))), "deltachat-ffi", "deltachat.h")
+        deltah = joinpath(dirname(dirname(dirname(here_dir))), "src", "deltachat.h")
    assert os.path.exists(deltah)

    lines = []
--- a/python/src/deltachat/cutil.py
+++ b/python/src/deltachat/cutil.py
@@ -1,6 +1,5 @@
 from .capi import lib
 from .capi import ffi
-from datetime import datetime


 def as_dc_charpointer(obj):
@@ -18,29 +17,3 @@ def iter_array(dc_array_t, constructor):

 def from_dc_charpointer(obj):
    return ffi.string(ffi.gc(obj, lib.dc_str_unref)).decode("utf8")
-
-
-class DCLot:
-    def __init__(self, dc_lot):
-        self._dc_lot = dc_lot
-
-    def id(self):
-        return lib.dc_lot_get_id(self._dc_lot)
-
-    def state(self):
-        return lib.dc_lot_get_state(self._dc_lot)
-
-    def text1(self):
-        return from_dc_charpointer(lib.dc_lot_get_text1(self._dc_lot))
-
-    def text1_meaning(self):
-        return lib.dc_lot_get_text1_meaning(self._dc_lot)
-
-    def text2(self):
-        return from_dc_charpointer(lib.dc_lot_get_text2(self._dc_lot))
-
-    def timestamp(self):
-        ts = lib.dc_lot_get_timestamp(self._dc_lot)
-        if ts == 0:
-            return None
-        return datetime.utcfromtimestamp(ts)
--- a/python/tests/conftest.py
+++ b/python/tests/conftest.py
@@ -213,15 +213,6 @@ def wait_configuration_progress(account, target):
            break


-def wait_securejoin_inviter_progress(account, target):
-    while 1:
-        evt_name, data1, data2 = \
-            account._evlogger.get_matching("DC_EVENT_SECUREJOIN_INVITER_PROGRESS")
-        if data2 >= target:
-            print("** SECUREJOINT-INVITER PROGRESS {}".format(target), account)
-            break
-
-
 def wait_successful_IMAP_SMTP_connection(account):
    imap_ok = smtp_ok = False
    while not imap_ok or not smtp_ok:
--- a/python/tests/test_account.py
+++ b/python/tests/test_account.py
@@ -4,7 +4,7 @@ import os
 from deltachat import const, Account
 from deltachat.message import Message
 from datetime import datetime, timedelta
-from conftest import wait_configuration_progress, wait_successful_IMAP_SMTP_connection, wait_securejoin_inviter_progress
+from conftest import wait_configuration_progress, wait_successful_IMAP_SMTP_connection


 class TestOfflineAccountBasic:
@@ -140,22 +140,6 @@ class TestOfflineChat:
        chat.set_name("title2")
        assert chat.get_name() == "title2"

-    @pytest.mark.parametrize("verified", [True, False])
-    def test_group_chat_qr(self, acfactory, ac1, verified):
-        ac2 = acfactory.get_configured_offline_account()
-        chat = ac1.create_group_chat(name="title1", verified=verified)
-        qr = chat.get_join_qr()
-        assert ac2.check_qr(qr).is_ask_verifygroup
-
-    def test_get_set_profile_image_simple(self, ac1, data):
-        chat = ac1.create_group_chat(name="title1")
-        p = data.get_path("d.png")
-        chat.set_profile_image(p)
-        p2 = chat.get_profile_image()
-        assert open(p, "rb").read() == open(p2, "rb").read()
-        chat.remove_profile_image()
-        assert chat.get_profile_image() is None
-
    def test_delete_and_send_fails(self, ac1, chat1):
        chat1.delete()
        ac1._evlogger.get_matching("DC_EVENT_MSGS_CHANGED")
@@ -322,16 +306,6 @@ class TestOfflineChat:
        chat1.set_draft(None)
        assert chat1.get_draft() is None

-    def test_qr_setup_contact(self, acfactory, lp):
-        ac1 = acfactory.get_configured_offline_account()
-        ac2 = acfactory.get_configured_offline_account()
-        qr = ac1.get_setup_contact_qr()
-        assert qr.startswith("OPENPGP4FPR:")
-        res = ac2.check_qr(qr)
-        assert res.is_ask_verifycontact()
-        assert not res.is_ask_verifygroup()
-        assert res.contact_id == 10
-

 class TestOnlineAccount:
    def test_one_account_init(self, acfactory):
@@ -572,85 +546,3 @@ class TestOnlineAccount:
        print("*************** Setup Code: ", setup_code)
        msg.continue_key_transfer(setup_code)
        assert ac1.get_info()["fingerprint"] == ac2.get_info()["fingerprint"]
-
-    def test_qr_setup_contact(self, acfactory, lp):
-        ac1 = acfactory.get_online_configuring_account()
-        ac2 = acfactory.get_online_configuring_account()
-        wait_configuration_progress(ac2, 1000)
-        wait_configuration_progress(ac1, 1000)
-        lp.sec("ac1: create QR code and let ac2 scan it, starting the securejoin")
-        qr = ac1.get_setup_contact_qr()
-        lp.sec("ac2: start QR-code based setup contact protocol")
-        ch = ac2.qr_setup_contact(qr)
-        assert ch.id >= 10
-        wait_securejoin_inviter_progress(ac1, 1000)
-
-    def test_qr_join_chat(self, acfactory, lp):
-        ac1 = acfactory.get_online_configuring_account()
-        ac2 = acfactory.get_online_configuring_account()
-        wait_configuration_progress(ac2, 1000)
-        wait_configuration_progress(ac1, 1000)
-        lp.sec("ac1: create QR code and let ac2 scan it, starting the securejoin")
-
-        chat = ac1.create_group_chat("hello")
-        qr = chat.get_join_qr()
-        lp.sec("ac2: start QR-code based join-group protocol")
-        ch = ac2.qr_join_chat(qr)
-        assert ch.id >= 10
-        wait_securejoin_inviter_progress(ac1, 1000)
-
-    def test_set_get_profile_image(self, acfactory, data, lp):
-        ac1 = acfactory.get_online_configuring_account()
-        ac2 = acfactory.get_online_configuring_account()
-        wait_configuration_progress(ac2, 1000)
-        wait_configuration_progress(ac1, 1000)
-
-        lp.sec("create unpromoted group chat")
-        chat = ac1.create_group_chat("hello")
-        p = data.get_path("d.png")
-
-        lp.sec("ac1: set profile image on unpromoted chat")
-        chat.set_profile_image(p)
-        ac1._evlogger.get_matching("DC_EVENT_CHAT_MODIFIED")
-        assert not chat.is_promoted()
-
-        lp.sec("ac1: send text to promote chat (XXX without contact added)")
-        # XXX first promote the chat before adding contact
-        # because DC does not send out profile images for unpromoted chats
-        # otherwise
-        chat.send_text("ac1: initial message to promote chat (workaround)")
-        assert chat.is_promoted()
-
-        lp.sec("ac2: add ac1 to a chat so the message does not land in DEADDROP")
-        c1 = ac2.create_contact(email=ac1.get_config("addr"))
-        ac2.create_chat_by_contact(c1)
-        ev = ac2._evlogger.get_matching("DC_EVENT_MSGS_CHANGED")
-
-        lp.sec("ac1: add ac2 to promoted group chat")
-        c2 = ac1.create_contact(email=ac2.get_config("addr"))
-        chat.add_contact(c2)
-
-        lp.sec("ac1: send a first message to ac2")
-        chat.send_text("hi")
-        assert chat.is_promoted()
-
-        lp.sec("ac2: wait for receiving message from ac1")
-        ev = ac2._evlogger.get_matching("DC_EVENT_INCOMING_MSG")
-        msg_in = ac2.get_message_by_id(ev[2])
-        assert not msg_in.chat.is_deaddrop()
-
-        lp.sec("ac2: create chat and read profile image")
-        chat2 = ac2.create_chat_by_message(msg_in)
-        p2 = chat2.get_profile_image()
-        assert p2 is not None
-        assert open(p2, "rb").read() == open(p, "rb").read()
-
-        ac2._evlogger.consume_events()
-        ac1._evlogger.consume_events()
-        lp.sec("ac2: delete profile image from chat")
-        chat2.remove_profile_image()
-        ev = ac1._evlogger.get_matching("DC_EVENT_INCOMING_MSG")
-        assert ev[1] == chat.id
-        chat1b = ac1.create_chat_by_message(ev[2])
-        assert chat1b.get_profile_image() is None
-        assert chat.get_profile_image() is None
--- a/python/tox.ini
+++ b/python/tox.ini
@@ -16,10 +16,7 @@ passenv =
    DCC_PY_LIVECONFIG
 deps = 
    pytest
-    pytest-rerunfailures
-    pytest-timeout
-    pytest-xdist
-    auditwheel
+    pytest-faulthandler
    pdbpp
    requests

@@ -54,12 +51,11 @@ commands =


 [pytest]
-addopts = -v -rs --reruns 3 --reruns-delay 2
+addopts = -v -rs
 python_files = tests/test_*.py 
 norecursedirs = .tox 
 xfail_strict=true
-timeout = 60 
-timeout_method = thread
+timeout = 60

 [flake8]
 max-line-length = 120
--- a/src/chat.rs
+++ b/src/chat.rs
--- a/src/chatlist.rs
+++ b/src/chatlist.rs
@@ -31,12 +31,17 @@ use crate::stock::StockMessage;
 /// first entry and only present on new messages, there is the rough idea that it can be optionally always
 /// present and sorted into the list by date. Rendering the deaddrop in the described way
 /// would not add extra work in the UI then.
-pub struct Chatlist {
+pub struct Chatlist<'a> {
+    context: &'a Context,
    /// Stores pairs of `chat_id, message_id`
    ids: Vec<(u32, u32)>,
 }

-impl Chatlist {
+impl<'a> Chatlist<'a> {
+    pub fn get_context(&self) -> &Context {
+        self.context
+    }
+
    /// Get a list of chats.
    /// The list can be filtered by query parameters.
    ///
@@ -80,7 +85,7 @@ impl Chatlist {
    /// `query_contact_id`: An optional contact ID for filtering the list. Only chats including this contact ID
    ///     are returned.
    pub fn try_load(
-        context: &Context,
+        context: &'a Context,
        listflags: usize,
        query: Option<&str>,
        query_contact_id: Option<u32>,
@@ -195,7 +200,7 @@ impl Chatlist {
            ids.push((DC_CHAT_ID_ARCHIVED_LINK, 0));
        }

-        Ok(Chatlist { ids })
+        Ok(Chatlist { context, ids })
    }

    /// Find out the number of chats.
@@ -242,7 +247,7 @@ impl Chatlist {
    /// - dc_lot_t::timestamp: the timestamp of the message.  0 if not applicable.
    /// - dc_lot_t::state: The state of the message as one of the DC_STATE_* constants (see #dc_msg_get_state()).
    //    0 if not applicable.
-    pub fn get_summary(&self, context: &Context, index: usize, chat: Option<&Chat>) -> Lot {
+    pub fn get_summary(&self, index: usize, chat: Option<&Chat<'a>>) -> Lot {
        // The summary is created by the chat, not by the last message.
        // This is because we may want to display drafts here or stuff as
        // "is typing".
@@ -258,7 +263,7 @@ impl Chatlist {
        let chat = if let Some(chat) = chat {
            chat
        } else {
-            if let Ok(chat) = Chat::load_from_db(context, self.ids[index].0) {
+            if let Ok(chat) = Chat::load_from_db(self.context, self.ids[index].0) {
                chat_loaded = chat;
                &chat_loaded
            } else {
@@ -270,11 +275,11 @@ impl Chatlist {
        let mut lastcontact = None;

        let lastmsg = if 0 != lastmsg_id {
-            if let Ok(lastmsg) = dc_msg_load_from_db(context, lastmsg_id) {
+            if let Ok(lastmsg) = dc_msg_load_from_db(self.context, lastmsg_id) {
                if lastmsg.from_id != 1 as libc::c_uint
                    && (chat.typ == Chattype::Group || chat.typ == Chattype::VerifiedGroup)
                {
-                    lastcontact = Contact::load_from_db(context, lastmsg.from_id).ok();
+                    lastcontact = Contact::load_from_db(self.context, lastmsg.from_id).ok();
                }

                Some(lastmsg)
@@ -289,9 +294,14 @@ impl Chatlist {
            ret.text2 = None;
        } else if lastmsg.is_none() || lastmsg.as_ref().unwrap().from_id == DC_CONTACT_ID_UNDEFINED
        {
-            ret.text2 = Some(context.stock_str(StockMessage::NoMessages).to_string());
+            ret.text2 = Some(self.context.stock_str(StockMessage::NoMessages).to_string());
        } else {
-            ret.fill(&mut lastmsg.unwrap(), chat, lastcontact.as_ref(), context);
+            ret.fill(
+                &mut lastmsg.unwrap(),
+                chat,
+                lastcontact.as_ref(),
+                self.context,
+            );
        }

        ret
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,5 +1,3 @@
-use std::str::FromStr;
-
 use strum::{EnumProperty, IntoEnumIterator};
 use strum_macros::{AsRefStr, Display, EnumIter, EnumProperty, EnumString};

@@ -10,11 +8,9 @@ use crate::error::Error;
 use crate::job::*;
 use crate::stock::StockMessage;

-pub const CONFIG_UI_PREFIX: &str = "ui.";
-
 /// The available configuration keys.
 #[derive(
-    Debug, Clone, PartialEq, Eq, Display, EnumString, AsRefStr, EnumIter, EnumProperty,
+    Debug, Clone, Copy, PartialEq, Eq, Display, EnumString, AsRefStr, EnumIter, EnumProperty,
 )]
 #[strum(serialize_all = "snake_case")]
 pub enum Config {
@@ -69,17 +65,11 @@ pub enum Config {
    SysMsgsizeMaxRecommended,
    #[strum(serialize = "sys.config_keys")]
    SysConfigKeys,
-    Ui(String)
 }

 impl Context {
-
-    pub fn get_config_from_str(&self, key: &str) -> Option<String> {
-        self.get_config(&config_from_str(key))
-    }
-
    /// Get a configuration key. Returns `None` if no value is set, and no default value found.
-    pub fn get_config(&self, key: &Config) -> Option<String> {
+    pub fn get_config(&self, key: Config) -> Option<String> {
        let value = match key {
            Config::Selfavatar => {
                let rel_path = self.sql.get_config(self, key);
@@ -88,7 +78,6 @@ impl Context {
            Config::SysVersion => Some((&*DC_VERSION_STR).clone()),
            Config::SysMsgsizeMaxRecommended => Some(format!("{}", 24 * 1024 * 1024 / 4 * 3)),
            Config::SysConfigKeys => Some(get_config_keys_string()),
-            Config::Ui(key) => self.sql.get_config(self, format!("{}{}", CONFIG_UI_PREFIX, key)),
            _ => self.sql.get_config(self, key),
        };

@@ -103,13 +92,6 @@ impl Context {
        }
    }

-    pub fn set_config_from_str(&self, key: &str, value: Option<&str>) -> Result<(), &str> {
-        if self.sql.set_config(self, config_from_str(key), value).is_err() {
-            return Err("Sql error");
-        }
-        Ok(())
-    }
-
    /// Set the given config key.
    /// If `None` is passed as a value the value is cleared and set to the default if there is one.
    pub fn set_config(&self, key: Config, value: Option<&str>) -> Result<(), Error> {
@@ -143,11 +125,7 @@ impl Context {
                };

                self.sql.set_config(self, key, val)
-            },
-            Config::Ui(key) => {
-                let key = format!("{}{}", CONFIG_UI_PREFIX, key);
-                self.sql.set_config(self, key, value)
-            },
+            }
            _ => self.sql.set_config(self, key, value),
        }
    }
@@ -164,23 +142,12 @@ fn get_config_keys_string() -> String {
    format!(" {} ", keys)
 }

-fn config_from_str(key: &str) -> Result<Config, &str> {
-    if key.starts_with(CONFIG_UI_PREFIX) {
-        Config::Ui(key[CONFIG_UI_PREFIX.len()-1..].to_string())
-    } else {
-        if let Ok(config) = Config::from_str(key) {
-            config
-        } else {
-            Err("invalid key")
-        }
-    }
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
+
+    use std::str::FromStr;
    use std::string::ToString;
-    use crate::test_utils::*;

    #[test]
    fn test_to_string() {
@@ -198,20 +165,4 @@ mod tests {
    fn test_default_prop() {
        assert_eq!(Config::ImapFolder.get_str("default"), Some("INBOX"));
    }
-
-    #[test]
-    fn test_config_from_str() {
-        assert_eq!(config_from_str("addr"), Config::Addr);
-        assert_eq!(config_from_str("addrxyz"), None);
-    }
-
-    #[test]
-    fn test_get_config_from_str() {
-        let t = dummy_context();
-        assert_eq!(t.ctx.set_config_from_str("addr", Some("foo@bar.bar")), Ok(()));
-        assert_eq!(t.ctx.get_config_from_str("addr").unwrap(), "foo@bar.bar");
-
-        assert_eq!(t.ctx.set_config_from_str("ui.desktop.some_string", Some("foobar")), Ok(()));
-        assert_eq!(t.ctx.get_config_from_str("ui.desktop.some_string").unwrap(), "foobar");
-    }
 }
--- a/src/configure/auto_mozilla.rs
+++ b/src/configure/auto_mozilla.rs
@@ -2,8 +2,8 @@ use quick_xml;
 use quick_xml::events::{BytesEnd, BytesStart, BytesText};

 use crate::context::Context;
+use crate::dc_loginparam::*;
 use crate::dc_tools::*;
-use crate::login_param::LoginParam;
 use crate::x::*;

 use super::read_autoconf_file;
@@ -13,10 +13,10 @@ use super::read_autoconf_file;
 /* documentation: https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfiguration */
 #[repr(C)]
 struct moz_autoconfigure_t<'a> {
-    pub in_0: &'a LoginParam,
-    pub in_emaildomain: &'a str,
-    pub in_emaillocalpart: &'a str,
-    pub out: LoginParam,
+    pub in_0: &'a dc_loginparam_t,
+    pub in_emaildomain: *mut libc::c_char,
+    pub in_emaillocalpart: *mut libc::c_char,
+    pub out: dc_loginparam_t,
    pub out_imap_set: libc::c_int,
    pub out_smtp_set: libc::c_int,
    pub tag_server: libc::c_int,
@@ -26,37 +26,44 @@ struct moz_autoconfigure_t<'a> {
 pub unsafe fn moz_autoconfigure(
    context: &Context,
    url: &str,
-    param_in: &LoginParam,
-) -> Option<LoginParam> {
-    let xml_raw = read_autoconf_file(context, url);
+    param_in: &dc_loginparam_t,
+) -> Option<dc_loginparam_t> {
+    let mut moz_ac = moz_autoconfigure_t {
+        in_0: param_in,
+        in_emaildomain: std::ptr::null_mut(),
+        in_emaillocalpart: std::ptr::null_mut(),
+        out: dc_loginparam_new(),
+        out_imap_set: 0,
+        out_smtp_set: 0,
+        tag_server: 0,
+        tag_config: 0,
+    };
+
+    let url_c = url.strdup();
+    let xml_raw = read_autoconf_file(context, url_c);
+    free(url_c as *mut libc::c_void);
    if xml_raw.is_null() {
        return None;
    }

-    // Split address into local part and domain part.
-    let p = param_in.addr.find("@");
-    if p.is_none() {
+    moz_ac.in_emaillocalpart = param_in.addr.strdup();
+    let p = strchr(moz_ac.in_emaillocalpart, '@' as i32);
+
+    if p.is_null() {
        free(xml_raw as *mut libc::c_void);
+        free(moz_ac.in_emaildomain as *mut libc::c_void);
+        free(moz_ac.in_emaillocalpart as *mut libc::c_void);
        return None;
    }
-    let (in_emaillocalpart, in_emaildomain) = param_in.addr.split_at(p.unwrap());
-    let in_emaildomain = &in_emaildomain[1..];
+
+    *p = 0 as libc::c_char;
+    moz_ac.in_emaildomain = dc_strdup(p.offset(1isize));

    let mut reader = quick_xml::Reader::from_str(as_str(xml_raw));
    reader.trim_text(true);

    let mut buf = Vec::new();

-    let mut moz_ac = moz_autoconfigure_t {
-        in_0: param_in,
-        in_emaildomain,
-        in_emaillocalpart,
-        out: LoginParam::new(),
-        out_imap_set: 0,
-        out_smtp_set: 0,
-        tag_server: 0,
-        tag_config: 0,
-    };
    loop {
        match reader.read_event(&mut buf) {
            Ok(quick_xml::events::Event::Start(ref e)) => {
@@ -69,6 +76,7 @@ pub unsafe fn moz_autoconfigure(
            Err(e) => {
                error!(
                    context,
+                    0,
                    "Configure xml: Error at position {}: {:?}",
                    reader.buffer_position(),
                    e
@@ -85,13 +93,17 @@ pub unsafe fn moz_autoconfigure(
        || moz_ac.out.send_server.is_empty()
        || moz_ac.out.send_port == 0
    {
-        let r = moz_ac.out.to_string();
-        warn!(context, "Bad or incomplete autoconfig: {}", r,);
+        let r = dc_loginparam_get_readable(&moz_ac.out);
+        warn!(context, 0, "Bad or incomplete autoconfig: {}", r,);
        free(xml_raw as *mut libc::c_void);
+        free(moz_ac.in_emaildomain as *mut libc::c_void);
+        free(moz_ac.in_emaillocalpart as *mut libc::c_void);
        return None;
    }

    free(xml_raw as *mut libc::c_void);
+    free(moz_ac.in_emaildomain as *mut libc::c_void);
+    free(moz_ac.in_emaillocalpart as *mut libc::c_void);
    Some(moz_ac.out)
 }

@@ -103,8 +115,8 @@ fn moz_autoconfigure_text_cb<B: std::io::BufRead>(
    let val = event.unescape_and_decode(reader).unwrap_or_default();

    let addr = &moz_ac.in_0.addr;
-    let email_local = moz_ac.in_emaillocalpart;
-    let email_domain = moz_ac.in_emaildomain;
+    let email_local = as_str(moz_ac.in_emaillocalpart);
+    let email_domain = as_str(moz_ac.in_emaildomain);

    let val = val
        .trim()
--- a/src/configure/auto_outlook.rs
+++ b/src/configure/auto_outlook.rs
@@ -2,8 +2,8 @@ use quick_xml;
 use quick_xml::events::{BytesEnd, BytesStart, BytesText};

 use crate::context::Context;
+use crate::dc_loginparam::*;
 use crate::dc_tools::*;
-use crate::login_param::LoginParam;
 use crate::x::*;
 use std::ptr;

@@ -13,8 +13,8 @@ use super::read_autoconf_file;
 ******************************************************************************/
 #[repr(C)]
 struct outlk_autodiscover_t<'a> {
-    pub in_0: &'a LoginParam,
-    pub out: LoginParam,
+    pub in_0: &'a dc_loginparam_t,
+    pub out: dc_loginparam_t,
    pub out_imap_set: libc::c_int,
    pub out_smtp_set: libc::c_int,
    pub tag_config: libc::c_int,
@@ -25,13 +25,13 @@ struct outlk_autodiscover_t<'a> {
 pub unsafe fn outlk_autodiscover(
    context: &Context,
    url__: &str,
-    param_in: &LoginParam,
-) -> Option<LoginParam> {
+    param_in: &dc_loginparam_t,
+) -> Option<dc_loginparam_t> {
    let mut xml_raw: *mut libc::c_char = ptr::null_mut();
    let mut url = url__.strdup();
    let mut outlk_ad = outlk_autodiscover_t {
        in_0: param_in,
-        out: LoginParam::new(),
+        out: dc_loginparam_new(),
        out_imap_set: 0,
        out_smtp_set: 0,
        tag_config: 0,
@@ -50,7 +50,7 @@ pub unsafe fn outlk_autodiscover(
            0,
            ::std::mem::size_of::<outlk_autodiscover_t>(),
        );
-        xml_raw = read_autoconf_file(context, as_str(url));
+        xml_raw = read_autoconf_file(context, url);
        if xml_raw.is_null() {
            ok_to_continue = false;
            break;
@@ -75,6 +75,7 @@ pub unsafe fn outlk_autodiscover(
                Err(e) => {
                    error!(
                        context,
+                        0,
                        "Configure xml: Error at position {}: {:?}",
                        reader.buffer_position(),
                        e
@@ -107,8 +108,8 @@ pub unsafe fn outlk_autodiscover(
            || outlk_ad.out.send_server.is_empty()
            || outlk_ad.out.send_port == 0
        {
-            let r = outlk_ad.out.to_string();
-            warn!(context, "Bad or incomplete autoconfig: {}", r,);
+            let r = dc_loginparam_get_readable(&outlk_ad.out);
+            warn!(context, 0, "Bad or incomplete autoconfig: {}", r,);
            free(url as *mut libc::c_void);
            free(xml_raw as *mut libc::c_void);
            outlk_clean_config(&mut outlk_ad);
--- a/src/configure/mod.rs
+++ b/src/configure/mod.rs
@@ -3,11 +3,11 @@ use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
 use crate::constants::Event;
 use crate::constants::DC_CREATE_MVBOX;
 use crate::context::Context;
+use crate::dc_loginparam::*;
 use crate::dc_tools::*;
 use crate::e2ee;
 use crate::imap::*;
 use crate::job::*;
-use crate::login_param::LoginParam;
 use crate::oauth2::*;
 use crate::param::Params;
 use crate::types::*;
@@ -33,17 +33,39 @@ macro_rules! progress {

 // connect
 pub unsafe fn configure(context: &Context) {
-    if dc_has_ongoing(context) {
-        warn!(context, "There is already another ongoing process running.",);
+    if 0 != dc_has_ongoing(context) {
+        warn!(
+            context,
+            0, "There is already another ongoing process running.",
+        );
        return;
    }
    job_kill_action(context, Action::ConfigureImap);
    job_add(context, Action::ConfigureImap, 0, Params::new(), 0);
 }
-
 /// Check if the context is already configured.
-pub fn dc_is_configured(context: &Context) -> bool {
-    context.sql.get_config_bool(context, "configured")
+pub fn dc_is_configured(context: &Context) -> libc::c_int {
+    if context
+        .sql
+        .get_config_int(context, "configured")
+        .unwrap_or_default()
+        > 0
+    {
+        1
+    } else {
+        0
+    }
+}
+/// Check if there is an ongoing process.
+unsafe fn dc_has_ongoing(context: &Context) -> libc::c_int {
+    let s_a = context.running_state.clone();
+    let s = s_a.read().unwrap();
+
+    if s.ongoing_running || !s.shall_stop_ongoing {
+        1
+    } else {
+        0
+    }
 }

 /*******************************************************************************
@@ -57,11 +79,11 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
    let mut smtp_connected_here = false;
    let mut ongoing_allocated_here = false;

-    let mut param_autoconfig: Option<LoginParam> = None;
-    if dc_alloc_ongoing(context) {
+    let mut param_autoconfig: Option<dc_loginparam_t> = None;
+    if !(0 == dc_alloc_ongoing(context)) {
        ongoing_allocated_here = true;
        if !context.sql.is_open() {
-            error!(context, "Cannot configure, database not opened.",);
+            error!(context, 0, "Cannot configure, database not opened.",);
        } else {
            context.inbox.read().unwrap().disconnect(context);
            context
@@ -77,13 +99,13 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                .imap
                .disconnect(context);
            context.smtp.clone().lock().unwrap().disconnect();
-            info!(context, "Configure ...",);
+            info!(context, 0, "Configure ...",);

            let s_a = context.running_state.clone();
            let s = s_a.read().unwrap();

            // Variables that are shared between steps:
-            let mut param = LoginParam::from_database(context, "");
+            let mut param: dc_loginparam_t = dc_loginparam_read(context, &context.sql, "");
            // need all vars here to be mutable because rust thinks the same step could be called multiple times
            // and also initialize, because otherwise rust thinks it's used while unitilized, even if thats not the case as the loop goes only forward
            let mut param_domain = "undefined.undefined".to_owned();
@@ -101,7 +123,7 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                    1 => {
                        progress!(context, 1);
                        if param.addr.is_empty() {
-                            error!(context, "Please enter an email address.",);
+                            error!(context, 0, "Please enter an email address.",);
                        }
                        !param.addr.is_empty()
                    }
@@ -134,7 +156,7 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                                utf8_percent_encode(&param.addr, NON_ALPHANUMERIC).to_string();
                            true
                        } else {
-                            error!(context, "Bad email-address.");
+                            error!(context, 0, "Bad email-address.");
                            false
                        }
                    }
@@ -244,7 +266,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                    12 => {
                        progress!(context, 500);
                        if let Some(ref cfg) = param_autoconfig {
-                            info!(context, "Got autoconfig: {}", &cfg);
+                            let r = dc_loginparam_get_readable(cfg);
+                            info!(context, 0, "Got autoconfig: {}", r);
                            if !cfg.mail_user.is_empty() {
                                param.mail_user = cfg.mail_user.clone();
                            }
@@ -328,7 +351,7 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                            || param.send_pw.is_empty()
                            || param.server_flags == 0
                        {
-                            error!(context, "Account settings incomplete.");
+                            error!(context, 0, "Account settings incomplete.");
                            false
                        } else {
                            true
@@ -345,7 +368,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                                ok_to_continue8 = true;
                                break;
                            }
-                            info!(context, "Trying: {}", &param);
+                            let r_0 = dc_loginparam_get_readable(&param);
+                            info!(context, 0, "Trying: {}", r_0,);

                            if context.inbox.read().unwrap().connect(context, &param) {
                                ok_to_continue8 = true;
@@ -363,7 +387,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                            progress!(context, 650 + username_variation * 30);
                            param.server_flags &= !(0x100 | 0x200 | 0x400);
                            param.server_flags |= 0x100;
-                            info!(context, "Trying: {}", &param);
+                            let r_1 = dc_loginparam_get_readable(&param);
+                            info!(context, 0, "Trying: {}", r_1,);

                            if context.inbox.read().unwrap().connect(context, &param) {
                                ok_to_continue8 = true;
@@ -376,7 +401,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                            }
                            progress!(context, 660 + username_variation * 30);
                            param.mail_port = 143;
-                            info!(context, "Trying: {}", &param);
+                            let r_2 = dc_loginparam_get_readable(&param);
+                            info!(context, 0, "Trying: {}", r_2,);

                            if context.inbox.read().unwrap().connect(context, &param) {
                                ok_to_continue8 = true;
@@ -431,7 +457,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                                param.server_flags &= !(0x10000 | 0x20000 | 0x40000);
                                param.server_flags |= 0x10000;
                                param.send_port = 587;
-                                info!(context, "Trying: {}", &param);
+                                let r_3 = dc_loginparam_get_readable(&param);
+                                info!(context, 0, "Trying: {}", r_3,);

                                if !context
                                    .smtp
@@ -447,7 +474,8 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                                        param.server_flags &= !(0x10000 | 0x20000 | 0x40000);
                                        param.server_flags |= 0x10000;
                                        param.send_port = 25;
-                                        info!(context, "Trying: {}", &param);
+                                        let r_4 = dc_loginparam_get_readable(&param);
+                                        info!(context, 0, "Trying: {}", r_4);

                                        if !context
                                            .smtp
@@ -499,14 +527,13 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                    17 => {
                        progress!(context, 910);
                        /* configuration success - write back the configured parameters with the "configured_" prefix; also write the "configured"-flag */
-                        param
-                            .save_to_database(
-                                context,
-                                "configured_", /*the trailing underscore is correct*/
-                            )
-                            .ok();
-
-                        context.sql.set_config_bool(context, "configured", true);
+                        dc_loginparam_write(
+                            context,
+                            &param,
+                            &context.sql,
+                            "configured_", /*the trailing underscore is correct*/
+                        );
+                        context.sql.set_config_int(context, "configured", 1).ok();
                        true
                    }
                    18 => {
@@ -516,13 +543,13 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
                        // (~30 seconds on a Moto G4 play) and might looks as if message sending is always that slow.
                        e2ee::ensure_secret_key_exists(context);
                        success = true;
-                        info!(context, "Configure completed.");
+                        info!(context, 0, "Configure completed.");
                        progress!(context, 940);
                        break; // We are done here
                    }

                    _ => {
-                        error!(context, "Internal error: step counter out of bound",);
+                        error!(context, 0, "Internal error: step counter out of bound",);
                        break;
                    }
                };
@@ -564,40 +591,7 @@ pub unsafe fn dc_job_do_DC_JOB_CONFIGURE_IMAP(context: &Context, _job: &Job) {
    progress!(context, (if success { 1000 } else { 0 }));
 }

-/*******************************************************************************
- * Ongoing process allocation/free/check
- ******************************************************************************/
-
-pub fn dc_alloc_ongoing(context: &Context) -> bool {
-    if dc_has_ongoing(context) {
-        warn!(context, "There is already another ongoing process running.",);
-
-        false
-    } else {
-        let s_a = context.running_state.clone();
-        let mut s = s_a.write().unwrap();
-
-        s.ongoing_running = true;
-        s.shall_stop_ongoing = false;
-
-        true
-    }
-}
-
-pub fn dc_free_ongoing(context: &Context) {
-    let s_a = context.running_state.clone();
-    let mut s = s_a.write().unwrap();
-
-    s.ongoing_running = false;
-    s.shall_stop_ongoing = true;
-}
-
-fn dc_has_ongoing(context: &Context) -> bool {
-    let s_a = context.running_state.clone();
-    let s = s_a.read().unwrap();
-
-    s.ongoing_running || !s.shall_stop_ongoing
-}
+/* File Structure like in C: */

 /*******************************************************************************
 * Connect to configured account
@@ -613,9 +607,9 @@ pub fn dc_connect_to_configured_imap(context: &Context, imap: &Imap) -> libc::c_
        .unwrap_or_default()
        == 0
    {
-        warn!(context, "Not configured, cannot connect.",);
+        warn!(context, 0, "Not configured, cannot connect.",);
    } else {
-        let param = LoginParam::from_database(context, "configured_");
+        let param = dc_loginparam_read(context, &context.sql, "configured_");
        // the trailing underscore is correct

        if imap.connect(context, &param) {
@@ -630,30 +624,59 @@ pub fn dc_connect_to_configured_imap(context: &Context, imap: &Imap) -> libc::c_
 * Configure a Context
 ******************************************************************************/

+/// Request an ongoing process to start.
+/// Returns 0=process started, 1=not started, there is running another process
+pub unsafe fn dc_alloc_ongoing(context: &Context) -> libc::c_int {
+    if 0 != dc_has_ongoing(context) {
+        warn!(
+            context,
+            0, "There is already another ongoing process running.",
+        );
+        return 0;
+    }
+    let s_a = context.running_state.clone();
+    let mut s = s_a.write().unwrap();
+
+    s.ongoing_running = true;
+    s.shall_stop_ongoing = false;
+
+    1
+}
+
+/// Frees the process allocated with dc_alloc_ongoing() - independently of dc_shall_stop_ongoing.
+/// If dc_alloc_ongoing() fails, this function MUST NOT be called.
+pub unsafe fn dc_free_ongoing(context: &Context) {
+    let s_a = context.running_state.clone();
+    let mut s = s_a.write().unwrap();
+
+    s.ongoing_running = false;
+    s.shall_stop_ongoing = true;
+}
+
 /// Signal an ongoing process to stop.
 pub fn dc_stop_ongoing_process(context: &Context) {
    let s_a = context.running_state.clone();
    let mut s = s_a.write().unwrap();

    if s.ongoing_running && !s.shall_stop_ongoing {
-        info!(context, "Signaling the ongoing process to stop ASAP.",);
+        info!(context, 0, "Signaling the ongoing process to stop ASAP.",);
        s.shall_stop_ongoing = true;
    } else {
-        info!(context, "No ongoing process to stop.",);
+        info!(context, 0, "No ongoing process to stop.",);
    };
 }

-pub fn read_autoconf_file(context: &Context, url: &str) -> *mut libc::c_char {
-    info!(context, "Testing {} ...", url);
+pub fn read_autoconf_file(context: &Context, url: *const libc::c_char) -> *mut libc::c_char {
+    info!(context, 0, "Testing {} ...", to_string(url));

    match reqwest::Client::new()
-        .get(url)
+        .get(as_str(url))
        .send()
        .and_then(|mut res| res.text())
    {
        Ok(res) => unsafe { res.strdup() },
        Err(_err) => {
-            info!(context, "Can\'t read file.",);
+            info!(context, 0, "Can\'t read file.",);

            std::ptr::null_mut()
        }
--- a/src/constants.rs
+++ b/src/constants.rs
@@ -18,12 +18,6 @@ pub enum MoveState {
    Moving = 3,
 }

-impl Default for MoveState {
-    fn default() -> Self {
-        MoveState::Undefined
-    }
-}
-
 // some defaults
 const DC_E2EE_DEFAULT_ENABLED: i32 = 1;
 pub const DC_MDNS_DEFAULT_ENABLED: i32 = 1;
@@ -48,7 +42,7 @@ impl Default for Blocked {

 pub const DC_IMAP_SEEN: u32 = 0x1;

-pub const DC_HANDSHAKE_CONTINUE_NORMAL_PROCESSING: i32 = 0x01;
+const DC_HANDSHAKE_CONTINUE_NORMAL_PROCESSING: i32 = 0x01;
 pub const DC_HANDSHAKE_STOP_NORMAL_PROCESSING: i32 = 0x02;
 pub const DC_HANDSHAKE_ADD_DELETE_JOB: i32 = 0x04;

@@ -58,7 +52,7 @@ pub const DC_GCL_ADD_ALLDONE_HINT: usize = 0x04;

 const DC_GCM_ADDDAYMARKER: usize = 0x01;

-pub const DC_GCL_VERIFIED_ONLY: usize = 0x01;
+const DC_GCL_VERIFIED_ONLY: usize = 0x01;
 pub const DC_GCL_ADD_SELF: usize = 0x02;

 /// param1 is a directory where the keys are written to
@@ -77,7 +71,7 @@ pub const DC_CHAT_ID_TRASH: u32 = 3;
 /// a message is just in creation but not yet assigned to a chat (eg. we may need the message ID to set up blobs; this avoids unready message to be sent and shown)
 const DC_CHAT_ID_MSGS_IN_CREATION: u32 = 4;
 /// virtual chat showing all messages flagged with msgs.starred=2
-pub const DC_CHAT_ID_STARRED: u32 = 5;
+const DC_CHAT_ID_STARRED: u32 = 5;
 /// only an indicator in a chatlist
 pub const DC_CHAT_ID_ARCHIVED_LINK: u32 = 6;
 /// only an indicator in a chatlist
@@ -175,12 +169,6 @@ const DC_LP_IMAP_SOCKET_FLAGS: usize =
 const DC_LP_SMTP_SOCKET_FLAGS: usize =
    (DC_LP_SMTP_SOCKET_STARTTLS | DC_LP_SMTP_SOCKET_SSL | DC_LP_SMTP_SOCKET_PLAIN);

-// QR code scanning (view from Bob, the joiner)
-pub const DC_VC_AUTH_REQUIRED: i32 = 2;
-pub const DC_VC_CONTACT_CONFIRM: i32 = 6;
-pub const DC_BOB_ERROR: i32 = 0;
-pub const DC_BOB_SUCCESS: i32 = 1;
-
 #[derive(Debug, Display, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive, FromSql, ToSql)]
 #[repr(i32)]
 pub enum Viewtype {
@@ -226,12 +214,6 @@ pub enum Viewtype {
    File = 60,
 }

-impl Default for Viewtype {
-    fn default() -> Self {
-        Viewtype::Unknown
-    }
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -557,6 +539,6 @@ pub const DC_CMD_GROUPIMAGE_CHANGED: libc::c_int = 3;
 pub const DC_CMD_MEMBER_ADDED_TO_GROUP: libc::c_int = 4;
 pub const DC_CMD_MEMBER_REMOVED_FROM_GROUP: libc::c_int = 5;
 pub const DC_CMD_AUTOCRYPT_SETUP_MESSAGE: libc::c_int = 6;
-pub const DC_CMD_SECUREJOIN_MESSAGE: libc::c_int = 7;
+const DC_CMD_SECUREJOIN_MESSAGE: libc::c_int = 7;
 pub const DC_CMD_LOCATION_STREAMING_ENABLED: libc::c_int = 8;
-pub const DC_CMD_LOCATION_ONLY: libc::c_int = 9;
+const DC_CMD_LOCATION_ONLY: libc::c_int = 9;
--- a/src/contact.rs
+++ b/src/contact.rs
@@ -1,23 +1,25 @@
-use deltachat_derive::*;
 use itertools::Itertools;
+use num_traits::{FromPrimitive, ToPrimitive};
 use rusqlite;
-use std::path::PathBuf;
+use rusqlite::types::*;

 use crate::aheader::EncryptPreference;
 use crate::config::Config;
 use crate::constants::*;
 use crate::context::Context;
+use crate::dc_loginparam::*;
 use crate::dc_tools::*;
 use crate::e2ee;
 use crate::error::Result;
 use crate::key::*;
-use crate::login_param::LoginParam;
 use crate::message::MessageState;
 use crate::peerstate::*;
 use crate::sql;
 use crate::stock::StockMessage;
 use crate::types::*;

+const DC_GCL_VERIFIED_ONLY: u32 = 0x01;
+
 /// Contacts with at least this origin value are shown in the contact list.
 const DC_ORIGIN_MIN_CONTACT_LIST: i32 = 0x100;

@@ -31,7 +33,8 @@ const DC_ORIGIN_MIN_CONTACT_LIST: i32 = 0x100;
 /// For this purpose, internally, two names are tracked -
 /// authorized-name and given-name.
 /// By default, these names are equal, but functions working with contact names
-pub struct Contact {
+pub struct Contact<'a> {
+    context: &'a Context,
    /// The contact ID.
    ///
    /// Special message IDs:
@@ -57,9 +60,7 @@ pub struct Contact {
 }

 /// Possible origins of a contact.
-#[derive(
-    Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, FromPrimitive, ToPrimitive, FromSql, ToSql,
-)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, FromPrimitive, ToPrimitive)]
 #[repr(i32)]
 pub enum Origin {
    Unknown = 0,
@@ -97,9 +98,20 @@ pub enum Origin {
    ManuallyCreated = 0x4000000,
 }

-impl Default for Origin {
-    fn default() -> Self {
-        Origin::Unknown
+impl ToSql for Origin {
+    fn to_sql(&self) -> rusqlite::Result<ToSqlOutput> {
+        let num: i64 = self
+            .to_i64()
+            .expect("impossible: Origin -> i64 conversion failed");
+
+        Ok(ToSqlOutput::Owned(Value::Integer(num)))
+    }
+}
+
+impl FromSql for Origin {
+    fn column_result(col: ValueRef) -> FromSqlResult<Self> {
+        let inner = FromSql::column_result(col)?;
+        FromPrimitive::from_i64(inner).ok_or(FromSqlError::InvalidType)
    }
 }

@@ -138,15 +150,16 @@ pub enum VerifiedStatus {
    BidirectVerified = 2,
 }

-impl Contact {
-    pub fn load_from_db(context: &Context, contact_id: u32) -> Result<Self> {
+impl<'a> Contact<'a> {
+    pub fn load_from_db(context: &'a Context, contact_id: u32) -> Result<Self> {
        if contact_id == DC_CONTACT_ID_SELF {
            let contact = Contact {
+                context,
                id: contact_id,
                name: context.stock_str(StockMessage::SelfMsg).into(),
                authname: "".into(),
                addr: context
-                    .get_config(&Config::ConfiguredAddr)
+                    .get_config(Config::ConfiguredAddr)
                    .unwrap_or_default(),
                blocked: false,
                origin: Origin::Unknown,
@@ -160,6 +173,7 @@ impl Contact {
            params![contact_id as i32],
            |row| {
                let contact = Self {
+                    context,
                    id: contact_id,
                    name: row.get::<_, String>(0)?,
                    authname: row.get::<_, String>(4)?,
@@ -178,7 +192,7 @@ impl Contact {
    }

    /// Check if a contact is blocked.
-    pub fn is_blocked_load(context: &Context, id: u32) -> bool {
+    pub fn is_blocked_load(context: &'a Context, id: u32) -> bool {
        Self::load_from_db(context, id)
            .map(|contact| contact.blocked)
            .unwrap_or_default()
@@ -257,7 +271,7 @@ impl Contact {

        let addr_normalized = addr_normalize(addr.as_ref());
        let addr_self = context
-            .get_config(&Config::ConfiguredAddr)
+            .get_config(Config::ConfiguredAddr)
            .unwrap_or_default();

        if addr_normalized == addr_self {
@@ -295,7 +309,7 @@ impl Contact {

        let addr = addr_normalize(addr.as_ref());
        let addr_self = context
-            .get_config(&Config::ConfiguredAddr)
+            .get_config(Config::ConfiguredAddr)
            .unwrap_or_default();

        if addr == addr_self {
@@ -305,6 +319,7 @@ impl Contact {
        if !may_be_valid_addr(&addr) {
            warn!(
                context,
+                0,
                "Bad address \"{}\" for contact \"{}\".",
                addr,
                if !name.as_ref().is_empty() {
@@ -328,22 +343,19 @@ impl Contact {
                let row_id = row.get(0)?;
                let row_name: String = row.get(1)?;
                let row_addr: String = row.get(2)?;
-                let row_origin: Origin = row.get(3)?;
+                let row_origin = row.get(3)?;
                let row_authname: String = row.get(4)?;

-                if !name.as_ref().is_empty() {
-                    if !row_name.is_empty() {
-                        if origin >= row_origin && name.as_ref() != row_name {
-                            update_name = true;
-                        }
-                    } else {
+                if !name.as_ref().is_empty() && !row_name.is_empty() {
+                    if origin >= row_origin && name.as_ref() != row_name {
                        update_name = true;
                    }
-                    if origin == Origin::IncomingUnknownFrom && name.as_ref() != row_authname {
-                        update_authname = true;
-                    }
+                } else {
+                    update_name = true;
+                }
+                if origin == Origin::IncomingUnknownFrom && name.as_ref() != row_authname {
+                    update_authname = true;
                }
-
                Ok((row_id, row_name, row_addr, row_origin, row_authname))
            },
        ) {
@@ -383,7 +395,7 @@ impl Contact {
                    context,
                    &context.sql,
                    "UPDATE chats SET name=? WHERE type=? AND id IN(SELECT chat_id FROM chats_contacts WHERE contact_id=?);",
-                    params![name.as_ref(), Chattype::Single, row_id]
+                    params![name.as_ref(), 100, row_id]
                ).ok();
                }
                sth_modified = Modifier::Modified;
@@ -400,7 +412,7 @@ impl Contact {
                row_id = sql::get_rowid(context, &context.sql, "contacts", "addr", addr);
                sth_modified = Modifier::Created;
            } else {
-                error!(context, "Cannot add contact.");
+                error!(context, 0, "Cannot add contact.");
            }
        }

@@ -421,13 +433,19 @@ impl Contact {
    /// To add a single contact entered by the user, you should prefer `Contact::create`,
    /// however, for adding a bunch of addresses, this function is _much_ faster.
    ///
-    /// The `addr_book` is a multiline string in the format `Name one\nAddress one\nName two\nAddress two`.
+    /// The `adr_book` is a multiline string in the format `Name one\nAddress one\nName two\nAddress two`.
    ///
    /// Returns the number of modified contacts.
-    pub fn add_address_book(context: &Context, addr_book: impl AsRef<str>) -> Result<usize> {
+    pub fn add_address_book(context: &Context, adr_book: impl AsRef<str>) -> Result<usize> {
        let mut modify_cnt = 0;

-        for (name, addr) in split_address_book(addr_book.as_ref()).into_iter() {
+        for chunk in &adr_book.as_ref().lines().chunks(2) {
+            let chunk = chunk.collect::<Vec<_>>();
+            if chunk.len() < 2 {
+                break;
+            }
+            let name = chunk[0];
+            let addr = chunk[1];
            let name = normalize_name(name);
            let (_, modified) = Contact::add_or_lookup(context, name, addr, Origin::AdressBook)?;
            if modified != Modifier::None {
@@ -456,15 +474,13 @@ impl Contact {
        query: Option<impl AsRef<str>>,
    ) -> Result<Vec<u32>> {
        let self_addr = context
-            .get_config(&Config::ConfiguredAddr)
+            .get_config(Config::ConfiguredAddr)
            .unwrap_or_default();

        let mut add_self = false;
        let mut ret = Vec::new();
-        let flag_verified_only = listflags_has(listflags, DC_GCL_VERIFIED_ONLY);
-        let flag_add_self = listflags_has(listflags, DC_GCL_ADD_SELF);

-        if flag_verified_only || query.is_some() {
+        if (listflags & DC_GCL_VERIFIED_ONLY) > 0 || query.is_some() {
            let s3str_like_cmd = format!(
                "%{}%",
                query
@@ -488,7 +504,7 @@ impl Contact {
                    0x100,
                    &s3str_like_cmd,
                    &s3str_like_cmd,
-                    if flag_verified_only { 0 } else { 1 },
+                    if 0 != listflags & 0x1 { 0 } else { 1 },
                ],
                |row| row.get::<_, i32>(0),
                |ids| {
@@ -499,7 +515,7 @@ impl Contact {
                },
            )?;

-            let self_name = context.get_config(&Config::Displayname).unwrap_or_default();
+            let self_name = context.get_config(Config::Displayname).unwrap_or_default();
            let self_name2 = context.stock_str(StockMessage::SelfMsg);

            if let Some(query) = query {
@@ -528,7 +544,7 @@ impl Contact {
            )?;
        }

-        if flag_add_self && add_self {
+        if 0 != listflags & DC_GCL_ADD_SELF as u32 && add_self {
            ret.push(DC_CONTACT_ID_SELF);
        }

@@ -573,7 +589,7 @@ impl Contact {

        if let Ok(contact) = Contact::load_from_db(context, contact_id) {
            let peerstate = Peerstate::from_addr(context, &context.sql, &contact.addr);
-            let loginparam = LoginParam::from_database(context, "configured_");
+            let loginparam = dc_loginparam_read(context, &context.sql, "configured_");

            let mut self_key = Key::from_self_public(context, &loginparam.addr, &context.sql);

@@ -679,7 +695,7 @@ impl Contact {
                    return Ok(());
                }
                Err(err) => {
-                    error!(context, "delete_contact {} failed ({})", contact_id, err);
+                    error!(context, 0, "delete_contact {} failed ({})", contact_id, err);
                    return Err(err);
                }
            }
@@ -687,7 +703,7 @@ impl Contact {

        info!(
            context,
-            "could not delete contact {}, there are {} messages with it", contact_id, count_msgs
+            0, "could not delete contact {}, there are {} messages with it", contact_id, count_msgs
        );
        bail!("Could not delete contact with messages in it");
    }
@@ -763,11 +779,9 @@ impl Contact {
    /// Get the contact's profile image.
    /// This is the image set by each remote user on their own
    /// using dc_set_config(context, "selfavatar", image).
-    pub fn get_profile_image(&self, context: &Context) -> Option<PathBuf> {
+    pub fn get_profile_image(&self) -> Option<String> {
        if self.id == DC_CONTACT_ID_SELF {
-            if let Some(p) = context.get_config(&Config::Selfavatar) {
-                return Some(PathBuf::from(p));
-            }
+            return self.context.get_config(Config::Selfavatar);
        }
        // TODO: else get image_abs from contact param
        None
@@ -786,18 +800,14 @@ impl Contact {
    ///
    /// The UI may draw a checkbox or something like that beside verified contacts.
    ///
-    pub fn is_verified(&self, context: &Context) -> VerifiedStatus {
-        self.is_verified_ex(context, None)
+    pub fn is_verified(&self) -> VerifiedStatus {
+        self.is_verified_ex(None)
    }

    /// Same as `Contact::is_verified` but allows speeding up things
    /// by adding the peerstate belonging to the contact.
    /// If you do not have the peerstate available, it is loaded automatically.
-    pub fn is_verified_ex(
-        &self,
-        context: &Context,
-        peerstate: Option<&Peerstate>,
-    ) -> VerifiedStatus {
+    pub fn is_verified_ex(&self, peerstate: Option<&Peerstate<'a>>) -> VerifiedStatus {
        // We're always sort of secured-verified as we could verify the key on this device any time with the key
        // on this device
        if self.id == DC_CONTACT_ID_SELF {
@@ -810,7 +820,7 @@ impl Contact {
            }
        }

-        let peerstate = Peerstate::from_addr(context, &context.sql, &self.addr);
+        let peerstate = Peerstate::from_addr(self.context, &self.context.sql, &self.addr);
        if let Some(ps) = peerstate {
            if ps.verified_key().is_some() {
                return VerifiedStatus::BidirectVerified;
@@ -1026,28 +1036,13 @@ pub fn addr_cmp(addr1: impl AsRef<str>, addr2: impl AsRef<str>) -> bool {
 pub fn addr_equals_self(context: &Context, addr: impl AsRef<str>) -> bool {
    if !addr.as_ref().is_empty() {
        let normalized_addr = addr_normalize(addr.as_ref());
-        if let Some(self_addr) = context.get_config(&Config::ConfiguredAddr) {
+        if let Some(self_addr) = context.get_config(Config::ConfiguredAddr) {
            return normalized_addr == self_addr;
        }
    }
    false
 }

-fn split_address_book(book: &str) -> Vec<(&str, &str)> {
-    book.lines()
-        .chunks(2)
-        .into_iter()
-        .filter_map(|mut chunk| {
-            let name = chunk.next().unwrap();
-            let addr = match chunk.next() {
-                Some(a) => a,
-                None => return None,
-            };
-            Some((name, addr))
-        })
-        .collect()
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -1083,14 +1078,4 @@ mod tests {
    fn test_get_first_name() {
        assert_eq!(get_first_name("John Doe"), "John");
    }
-
-    #[test]
-    fn test_split_address_book() {
-        let book = "Name one\nAddress one\nName two\nAddress two\nrest name";
-        let list = split_address_book(&book);
-        assert_eq!(
-            list,
-            vec![("Name one", "Address one"), ("Name two", "Address two")]
-        )
-    }
 }
--- a/src/context.rs
+++ b/src/context.rs
@@ -3,13 +3,13 @@ use std::sync::{Arc, Condvar, Mutex, RwLock};
 use crate::chat::*;
 use crate::constants::*;
 use crate::contact::*;
+use crate::dc_loginparam::*;
 use crate::dc_receive_imf::*;
 use crate::dc_tools::*;
 use crate::imap::*;
 use crate::job::*;
 use crate::job_thread::JobThread;
 use crate::key::*;
-use crate::login_param::LoginParam;
 use crate::lot::Lot;
 use crate::message::*;
 use crate::param::Params;
@@ -208,11 +208,17 @@ unsafe fn cb_precheck_imf(
        if *old_server_folder.offset(0isize) as libc::c_int == 0i32
            && old_server_uid == 0i32 as libc::c_uint
        {
-            info!(context, "[move] detected bbc-self {}", as_str(rfc724_mid),);
+            info!(
+                context,
+                0,
+                "[move] detected bbc-self {}",
+                as_str(rfc724_mid),
+            );
            mark_seen = 1i32
        } else if as_str(old_server_folder) != server_folder {
            info!(
                context,
+                0,
                "[move] detected moved message {}",
                as_str(rfc724_mid),
            );
@@ -252,16 +258,16 @@ fn cb_get_config(context: &Context, key: &str) -> Option<String> {
 }

 pub unsafe fn dc_close(context: &Context) {
-    info!(context, "disconnecting INBOX-watch",);
+    info!(context, 0, "disconnecting INBOX-watch",);
    context.inbox.read().unwrap().disconnect(context);
-    info!(context, "disconnecting sentbox-thread",);
+    info!(context, 0, "disconnecting sentbox-thread",);
    context
        .sentbox_thread
        .read()
        .unwrap()
        .imap
        .disconnect(context);
-    info!(context, "disconnecting mvbox-thread",);
+    info!(context, 0, "disconnecting mvbox-thread",);
    context
        .mvbox_thread
        .read()
@@ -269,7 +275,7 @@ pub unsafe fn dc_close(context: &Context) {
        .imap
        .disconnect(context);

-    info!(context, "disconnecting SMTP");
+    info!(context, 0, "disconnecting SMTP");
    context.smtp.clone().lock().unwrap().disconnect();

    context.sql.close(context);
@@ -325,8 +331,8 @@ pub unsafe fn dc_get_blobdir(context: &Context) -> *mut libc::c_char {

 pub unsafe fn dc_get_info(context: &Context) -> *mut libc::c_char {
    let unset = "0";
-    let l = LoginParam::from_database(context, "");
-    let l2 = LoginParam::from_database(context, "configured_");
+    let l = dc_loginparam_read(context, &context.sql, "");
+    let l2 = dc_loginparam_read(context, &context.sql, "configured_");
    let displayname = context.sql.get_config(context, "displayname");
    let chats = get_chat_cnt(context) as usize;
    let real_msgs = dc_get_real_msg_cnt(context) as usize;
@@ -370,6 +376,8 @@ pub unsafe fn dc_get_info(context: &Context) -> *mut libc::c_char {
        "<Not yet calculated>".into()
    };

+    let l_readable_str = dc_loginparam_get_readable(&l);
+    let l2_readable_str = dc_loginparam_get_readable(&l2);
    let inbox_watch = context
        .sql
        .get_config_int(context, "inbox_watch")
@@ -449,8 +457,8 @@ pub unsafe fn dc_get_info(context: &Context) -> *mut libc::c_char {
        },
        displayname.unwrap_or_else(|| unset.into()),
        is_configured,
-        l,
-        l2,
+        l_readable_str,
+        l2_readable_str,
        inbox_watch,
        sentbox_watch,
        mvbox_watch,
--- a/src/dc_imex.rs
+++ b/src/dc_imex.rs
@@ -58,6 +58,7 @@ pub unsafe fn dc_imex_has_backup(
    if dir_iter.is_err() {
        info!(
            context,
+            0,
            "Backup check: Cannot open directory \"{}\".\x00",
            dir_name.display(),
        );
@@ -91,7 +92,7 @@ pub unsafe fn dc_imex_has_backup(
        Some(path) => match path.to_c_string() {
            Ok(cstr) => dc_strdup(cstr.as_ptr()),
            Err(err) => {
-                error!(context, "Invalid backup filename: {}", err);
+                error!(context, 0, "Invalid backup filename: {}", err);
                std::ptr::null_mut()
            }
        },
@@ -102,7 +103,7 @@ pub unsafe fn dc_imex_has_backup(
 pub unsafe fn dc_initiate_key_transfer(context: &Context) -> *mut libc::c_char {
    let mut setup_file_name: *mut libc::c_char = ptr::null_mut();
    let mut msg: Message;
-    if !dc_alloc_ongoing(context) {
+    if dc_alloc_ongoing(context) == 0 {
        return std::ptr::null_mut();
    }
    let setup_code = dc_create_setup_code(context);
@@ -138,7 +139,7 @@ pub unsafe fn dc_initiate_key_transfer(context: &Context) -> *mut libc::c_char {
                    ))
                {
                    if let Ok(chat_id) = chat::create_by_contact_id(context, 1) {
-                        msg = dc_msg_new_untyped();
+                        msg = dc_msg_new_untyped(context);
                        msg.type_0 = Viewtype::File;
                        msg.param.set(Param::File, as_str(setup_file_name));

@@ -155,7 +156,7 @@ pub unsafe fn dc_initiate_key_transfer(context: &Context) -> *mut libc::c_char {
                            .shall_stop_ongoing
                        {
                            if let Ok(msg_id) = chat::send_msg(context, chat_id, &mut msg) {
-                                info!(context, "Wait for setup message being sent ...",);
+                                info!(context, 0, "Wait for setup message being sent ...",);
                                loop {
                                    if context
                                        .running_state
@@ -169,7 +170,7 @@ pub unsafe fn dc_initiate_key_transfer(context: &Context) -> *mut libc::c_char {
                                    std::thread::sleep(std::time::Duration::from_secs(1));
                                    if let Ok(msg) = dc_get_msg(context, msg_id) {
                                        if 0 != dc_msg_is_sent(&msg) {
-                                            info!(context, "... setup message sent.",);
+                                            info!(context, 0, "... setup message sent.",);
                                            break;
                                        }
                                    }
@@ -207,8 +208,16 @@ pub fn dc_render_setup_file(context: &Context, passphrase: &str) -> Result<Strin
        _ => 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())
-        .ok_or(format_err!("Failed to encrypt private key."))?;
+    let encr = {
+        let private_key_asc_c = CString::yolo(private_key_asc);
+        let passphrase_c = CString::yolo(passphrase);
+        dc_pgp_symm_encrypt(
+            passphrase_c.as_ptr(),
+            private_key_asc_c.as_ptr() as *const libc::c_void,
+            private_key_asc_c.as_bytes().len(),
+        )
+        .ok_or(format_err!("Failed to encrypt private key."))?
+    };
    let replacement = format!(
        concat!(
            "-----BEGIN PGP MESSAGE-----\r\n",
@@ -263,57 +272,56 @@ pub fn dc_create_setup_code(_context: &Context) -> String {
    ret
 }

+// TODO should return bool /rtn
 pub unsafe fn dc_continue_key_transfer(
    context: &Context,
    msg_id: uint32_t,
    setup_code: *const libc::c_char,
-) -> bool {
-    let mut success = false;
+) -> libc::c_int {
+    let mut success: libc::c_int = 0i32;
    let mut filename: *mut libc::c_char = ptr::null_mut();
    let mut filecontent: *mut libc::c_char = ptr::null_mut();
    let mut filebytes: size_t = 0i32 as size_t;
    let mut armored_key: *mut libc::c_char = ptr::null_mut();
    let mut norm_sc: *mut libc::c_char = ptr::null_mut();
-    if msg_id <= 9i32 as libc::c_uint || setup_code.is_null() {
-        return false;
-    }
-    let msg = dc_get_msg(context, msg_id);
-    if msg.is_err()
-        || !dc_msg_is_setupmessage(msg.as_ref().unwrap())
-        || {
-            filename = dc_msg_get_file(context, msg.as_ref().unwrap());
-            filename.is_null()
-        }
-        || *filename.offset(0isize) as libc::c_int == 0i32
-    {
-        error!(context, "Message is no Autocrypt Setup Message.",);
-    } else if 0
-        == dc_read_file(
-            context,
-            filename,
-            &mut filecontent as *mut *mut libc::c_char as *mut *mut libc::c_void,
-            &mut filebytes,
-        )
-        || filecontent.is_null()
-        || filebytes <= 0
-    {
-        error!(context, "Cannot read Autocrypt Setup Message file.",);
-    } else {
-        norm_sc = dc_normalize_setup_code(context, setup_code);
-        if norm_sc.is_null() {
-            warn!(context, "Cannot normalize Setup Code.",);
+    if !(msg_id <= 9i32 as libc::c_uint || setup_code.is_null()) {
+        let msg = dc_get_msg(context, msg_id);
+        if msg.is_err()
+            || !dc_msg_is_setupmessage(msg.as_ref().unwrap())
+            || {
+                filename = dc_msg_get_file(msg.as_ref().unwrap());
+                filename.is_null()
+            }
+            || *filename.offset(0isize) as libc::c_int == 0i32
+        {
+            error!(context, 0, "Message is no Autocrypt Setup Message.",);
+        } else if 0
+            == dc_read_file(
+                context,
+                filename,
+                &mut filecontent as *mut *mut libc::c_char as *mut *mut libc::c_void,
+                &mut filebytes,
+            )
+            || filecontent.is_null()
+            || filebytes <= 0
+        {
+            error!(context, 0, "Cannot read Autocrypt Setup Message file.",);
        } else {
-            armored_key = dc_decrypt_setup_file(context, norm_sc, filecontent);
-            if armored_key.is_null() {
-                warn!(context, "Cannot decrypt Autocrypt Setup Message.",);
-            } else if set_self_key(context, armored_key, 1) {
-                /*set default*/
-                /* error already logged */
-                success = true
+            norm_sc = dc_normalize_setup_code(context, setup_code);
+            if norm_sc.is_null() {
+                warn!(context, 0, "Cannot normalize Setup Code.",);
+            } else {
+                armored_key = dc_decrypt_setup_file(context, norm_sc, filecontent);
+                if armored_key.is_null() {
+                    warn!(context, 0, "Cannot decrypt Autocrypt Setup Message.",);
+                } else if set_self_key(context, armored_key, 1) {
+                    /*set default*/
+                    /* error already logged */
+                    success = 1i32
+                }
            }
        }
    }
-
    free(armored_key as *mut libc::c_void);
    free(filecontent as *mut libc::c_void);
    free(filename as *mut libc::c_void);
@@ -335,7 +343,7 @@ fn set_self_key(
        .and_then(|(k, h)| k.split_key().map(|pub_key| (k, pub_key, h)));

    if keys.is_none() {
-        error!(context, "File does not contain a valid private key.",);
+        error!(context, 0, "File does not contain a valid private key.",);
        return false;
    }

@@ -365,13 +373,13 @@ fn set_self_key(
            return false;
        }
    } else {
-        error!(context, "File does not contain a private key.",);
+        error!(context, 0, "File does not contain a private key.",);
    }

    let self_addr = context.sql.get_config(context, "configured_addr");

    if self_addr.is_none() {
-        error!(context, "Missing self addr");
+        error!(context, 0, "Missing self addr");
        return false;
    }

@@ -383,7 +391,7 @@ fn set_self_key(
        set_default,
        &context.sql,
    ) {
-        error!(context, "Cannot save keypair.");
+        error!(context, 0, "Cannot save keypair.");
        return false;
    }

@@ -441,10 +449,9 @@ pub unsafe fn dc_decrypt_setup_file(
            || binary_bytes == 0)
        {
            /* decrypt symmetrically */
-            if let Some(plain) = dc_pgp_symm_decrypt(
-                as_str(passphrase),
-                std::slice::from_raw_parts(binary as *const u8, binary_bytes),
-            ) {
+            if let Some(plain) =
+                dc_pgp_symm_decrypt(passphrase, binary as *const libc::c_void, binary_bytes)
+            {
                let payload_c = CString::new(plain).unwrap();
                payload = strdup(payload_c.as_ptr());
            }
@@ -495,27 +502,30 @@ pub unsafe fn dc_normalize_setup_code(
 pub unsafe fn dc_job_do_DC_JOB_IMEX_IMAP(context: &Context, job: &Job) {
    let mut ok_to_continue = true;
    let mut success: libc::c_int = 0;
+    let mut ongoing_allocated_here: libc::c_int = 0;
    let what: libc::c_int;

-    if dc_alloc_ongoing(context) {
+    if !(0 == dc_alloc_ongoing(context)) {
+        ongoing_allocated_here = 1;
        what = job.param.get_int(Param::Cmd).unwrap_or_default();
        let param1_s = job.param.get(Param::Arg).unwrap_or_default();
        let param1 = CString::yolo(param1_s);
        let _param2 = CString::yolo(job.param.get(Param::Arg2).unwrap_or_default());

        if strlen(param1.as_ptr()) == 0 {
-            error!(context, "No Import/export dir/file given.",);
+            error!(context, 0, "No Import/export dir/file given.",);
        } else {
-            info!(context, "Import/export process started.",);
+            info!(context, 0, "Import/export process started.",);
            context.call_cb(Event::IMEX_PROGRESS, 10 as uintptr_t, 0 as uintptr_t);
            if !context.sql.is_open() {
-                error!(context, "Import/export: Database not opened.",);
+                error!(context, 0, "Import/export: Database not opened.",);
            } else {
                if what == 1 || what == 11 {
                    /* before we export anything, make sure the private key exists */
                    if e2ee::ensure_secret_key_exists(context).is_err() {
                        error!(
                            context,
+                            0,
                            "Import/export: Cannot create private key or private key not available.",
                        );
                        ok_to_continue = false;
@@ -527,25 +537,25 @@ pub unsafe fn dc_job_do_DC_JOB_IMEX_IMAP(context: &Context, job: &Job) {
                    match what {
                        1 => {
                            if 0 != export_self_keys(context, param1.as_ptr()) {
-                                info!(context, "Import/export completed.",);
+                                info!(context, 0, "Import/export completed.",);
                                success = 1
                            }
                        }
                        2 => {
                            if 0 != import_self_keys(context, param1.as_ptr()) {
-                                info!(context, "Import/export completed.",);
+                                info!(context, 0, "Import/export completed.",);
                                success = 1
                            }
                        }
                        11 => {
                            if 0 != export_backup(context, param1.as_ptr()) {
-                                info!(context, "Import/export completed.",);
+                                info!(context, 0, "Import/export completed.",);
                                success = 1
                            }
                        }
                        12 => {
                            if 0 != import_backup(context, param1.as_ptr()) {
-                                info!(context, "Import/export completed.",);
+                                info!(context, 0, "Import/export completed.",);
                                success = 1
                            }
                        }
@@ -554,6 +564,9 @@ pub unsafe fn dc_job_do_DC_JOB_IMEX_IMAP(context: &Context, job: &Job) {
                }
            }
        }
+    }
+
+    if 0 != ongoing_allocated_here {
        dc_free_ongoing(context);
    }
    context.call_cb(
@@ -572,6 +585,7 @@ pub unsafe fn dc_job_do_DC_JOB_IMEX_IMAP(context: &Context, job: &Job) {
 unsafe fn import_backup(context: &Context, backup_to_import: *const libc::c_char) -> libc::c_int {
    info!(
        context,
+        0,
        "Import \"{}\" to \"{}\".",
        as_str(backup_to_import),
        context
@@ -580,8 +594,8 @@ unsafe fn import_backup(context: &Context, backup_to_import: *const libc::c_char
            .map_or("<<None>>", |p| p.to_str().unwrap())
    );

-    if dc_is_configured(context) {
-        error!(context, "Cannot import backups to accounts in use.");
+    if 0 != dc_is_configured(context) {
+        error!(context, 0, "Cannot import backups to accounts in use.");
        return 0;
    }
    &context.sql.close(&context);
@@ -589,7 +603,7 @@ unsafe fn import_backup(context: &Context, backup_to_import: *const libc::c_char
    if dc_file_exist(context, context.get_dbfile().unwrap()) {
        error!(
            context,
-            "Cannot import backups: Cannot delete the old file.",
+            0, "Cannot import backups: Cannot delete the old file.",
        );
        return 0;
    }
@@ -616,7 +630,7 @@ unsafe fn import_backup(context: &Context, backup_to_import: *const libc::c_char
        .unwrap_or_default() as usize;
    info!(
        context,
-        "***IMPORT-in-progress: total_files_cnt={:?}", total_files_cnt,
+        0, "***IMPORT-in-progress: total_files_cnt={:?}", total_files_cnt,
    );

    let res = context.sql.query_map(
@@ -664,6 +678,7 @@ unsafe fn import_backup(context: &Context, backup_to_import: *const libc::c_char
                }
                error!(
                    context,
+                    0,
                    "Storage full? Cannot write file {} with {} bytes.",
                    &pathNfilename,
                    file_blob.len(),
@@ -710,7 +725,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
    let buffer = CString::yolo(res);
    let dest_pathNfilename = dc_get_fine_pathNfilename(context, dir, buffer.as_ptr());
    if dest_pathNfilename.is_null() {
-        error!(context, "Cannot get backup file name.",);
+        error!(context, 0, "Cannot get backup file name.",);

        return success;
    }
@@ -722,6 +737,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
    let mut closed = true;
    info!(
        context,
+        0,
        "Backup \"{}\" to \"{}\".",
        context
            .get_dbfile()
@@ -765,7 +781,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
                if let Ok(dir_handle) = std::fs::read_dir(dir) {
                    total_files_cnt += dir_handle.filter(|r| r.is_ok()).count();

-                    info!(context, "EXPORT: total_files_cnt={}", total_files_cnt);
+                    info!(context, 0, "EXPORT: total_files_cnt={}", total_files_cnt);
                    if total_files_cnt > 0 {
                        // scan directory, pass 2: copy files
                        if let Ok(dir_handle) = std::fs::read_dir(dir) {
@@ -811,7 +827,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
                                                {
                                                    continue;
                                                } else {
-                                                    info!(context, "EXPORTing filename={}", name);
+                                                    info!(context, 0, "EXPORTing filename={}", name);
                                                    let curr_pathNfilename = format!(
                                                        "{}/{}",
                                                        as_str(context.get_blobdir()),
@@ -827,6 +843,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
                                                        if stmt.execute(params![name, buf]).is_err() {
                                                            error!(
                                                                context,
+                                                                0,
                                                                "Disk full? Cannot add file \"{}\" to backup.",
                                                                &curr_pathNfilename,
                                                            );
@@ -846,12 +863,13 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
                        } else {
                            error!(
                                context,
+                                0,
                                "Backup: Cannot copy from blob-directory \"{}\".",
                                as_str(context.get_blobdir()),
                            );
                        }
                    } else {
-                        info!(context, "Backup: No files to copy.",);
+                        info!(context, 0, "Backup: No files to copy.",);
                        ok_to_continue = true;
                    }
                    if ok_to_continue {
@@ -870,6 +888,7 @@ unsafe fn export_backup(context: &Context, dir: *const libc::c_char) -> libc::c_
                } else {
                    error!(
                        context,
+                        0,
                        "Backup: Cannot get info for blob-directory \"{}\".",
                        as_str(context.get_blobdir())
                    );
@@ -934,7 +953,7 @@ unsafe fn import_self_keys(context: &Context, dir_name: *const libc::c_char) ->
                    dir_name,
                    name_c.as_ptr(),
                );
-                info!(context, "Checking: {}", as_str(path_plus_name));
+                info!(context, 0, "Checking: {}", as_str(path_plus_name));
                free(buf as *mut libc::c_void);
                buf = ptr::null_mut();
                if 0 == dc_read_file(
@@ -978,6 +997,7 @@ unsafe fn import_self_keys(context: &Context, dir_name: *const libc::c_char) ->
                {
                    info!(
                        context,
+                        0,
                        "Treating \"{}\" as a legacy private key.",
                        as_str(path_plus_name),
                    );
@@ -991,6 +1011,7 @@ unsafe fn import_self_keys(context: &Context, dir_name: *const libc::c_char) ->
            if imported_cnt == 0i32 {
                error!(
                    context,
+                    0,
                    "No private keys found in \"{}\".",
                    as_str(dir_name),
                );
@@ -998,6 +1019,7 @@ unsafe fn import_self_keys(context: &Context, dir_name: *const libc::c_char) ->
        } else {
            error!(
                context,
+                0,
                "Import: Cannot open directory \"{}\".",
                as_str(dir_name),
            );
@@ -1097,10 +1119,10 @@ unsafe fn export_key_to_asc_file(
            id,
        )
    }
-    info!(context, "Exporting key {}", as_str(file_name),);
+    info!(context, 0, "Exporting key {}", as_str(file_name),);
    dc_delete_file(context, as_path(file_name));
    if !key.write_asc_to_file(file_name, context) {
-        error!(context, "Cannot write key to {}", as_str(file_name),);
+        error!(context, 0, "Cannot write key to {}", as_str(file_name),);
    } else {
        context.call_cb(
            Event::IMEX_FILE_WRITTEN,
--- a/src/dc_loginparam.rs
+++ b/src/dc_loginparam.rs
@@ -0,0 +1,214 @@
+use std::borrow::Cow;
+
+use crate::context::Context;
+use crate::sql::Sql;
+
+#[derive(Default, Debug)]
+#[allow(non_camel_case_types)]
+pub struct dc_loginparam_t {
+    pub addr: String,
+    pub mail_server: String,
+    pub mail_user: String,
+    pub mail_pw: String,
+    pub mail_port: i32,
+    pub send_server: String,
+    pub send_user: String,
+    pub send_pw: String,
+    pub send_port: i32,
+    pub server_flags: i32,
+}
+
+impl dc_loginparam_t {
+    pub fn addr_str(&self) -> &str {
+        self.addr.as_str()
+    }
+}
+
+pub fn dc_loginparam_new() -> dc_loginparam_t {
+    Default::default()
+}
+
+pub fn dc_loginparam_read(
+    context: &Context,
+    sql: &Sql,
+    prefix: impl AsRef<str>,
+) -> dc_loginparam_t {
+    let prefix = prefix.as_ref();
+
+    let key = format!("{}addr", prefix);
+    let addr = sql
+        .get_config(context, key)
+        .unwrap_or_default()
+        .trim()
+        .to_string();
+
+    let key = format!("{}mail_server", prefix);
+    let mail_server = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}mail_port", prefix);
+    let mail_port = sql.get_config_int(context, key).unwrap_or_default();
+
+    let key = format!("{}mail_user", prefix);
+    let mail_user = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}mail_pw", prefix);
+    let mail_pw = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}send_server", prefix);
+    let send_server = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}send_port", prefix);
+    let send_port = sql.get_config_int(context, key).unwrap_or_default();
+
+    let key = format!("{}send_user", prefix);
+    let send_user = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}send_pw", prefix);
+    let send_pw = sql.get_config(context, key).unwrap_or_default();
+
+    let key = format!("{}server_flags", prefix);
+    let server_flags = sql.get_config_int(context, key).unwrap_or_default();
+
+    dc_loginparam_t {
+        addr: addr.to_string(),
+        mail_server,
+        mail_user,
+        mail_pw,
+        mail_port,
+        send_server,
+        send_user,
+        send_pw,
+        send_port,
+        server_flags,
+    }
+}
+
+pub fn dc_loginparam_write(
+    context: &Context,
+    loginparam: &dc_loginparam_t,
+    sql: &Sql,
+    prefix: impl AsRef<str>,
+) {
+    let prefix = prefix.as_ref();
+
+    let key = format!("{}addr", prefix);
+    sql.set_config(context, key, Some(&loginparam.addr)).ok();
+
+    let key = format!("{}mail_server", prefix);
+    sql.set_config(context, key, Some(&loginparam.mail_server))
+        .ok();
+
+    let key = format!("{}mail_port", prefix);
+    sql.set_config_int(context, key, loginparam.mail_port).ok();
+
+    let key = format!("{}mail_user", prefix);
+    sql.set_config(context, key, Some(&loginparam.mail_user))
+        .ok();
+
+    let key = format!("{}mail_pw", prefix);
+    sql.set_config(context, key, Some(&loginparam.mail_pw)).ok();
+
+    let key = format!("{}send_server", prefix);
+    sql.set_config(context, key, Some(&loginparam.send_server))
+        .ok();
+
+    let key = format!("{}send_port", prefix);
+    sql.set_config_int(context, key, loginparam.send_port).ok();
+
+    let key = format!("{}send_user", prefix);
+    sql.set_config(context, key, Some(&loginparam.send_user))
+        .ok();
+
+    let key = format!("{}send_pw", prefix);
+    sql.set_config(context, key, Some(&loginparam.send_pw)).ok();
+
+    let key = format!("{}server_flags", prefix);
+    sql.set_config_int(context, key, loginparam.server_flags)
+        .ok();
+}
+
+fn unset_empty(s: &String) -> Cow<String> {
+    if s.is_empty() {
+        Cow::Owned("unset".to_string())
+    } else {
+        Cow::Borrowed(s)
+    }
+}
+
+pub fn dc_loginparam_get_readable(loginparam: &dc_loginparam_t) -> String {
+    let unset = "0";
+    let pw = "***";
+
+    let flags_readable = get_readable_flags(loginparam.server_flags);
+
+    format!(
+        "{} {}:{}:{}:{} {}:{}:{}:{} {}",
+        unset_empty(&loginparam.addr),
+        unset_empty(&loginparam.mail_user),
+        if !loginparam.mail_pw.is_empty() {
+            pw
+        } else {
+            unset
+        },
+        unset_empty(&loginparam.mail_server),
+        loginparam.mail_port,
+        unset_empty(&loginparam.send_user),
+        if !loginparam.send_pw.is_empty() {
+            pw
+        } else {
+            unset
+        },
+        unset_empty(&loginparam.send_server),
+        loginparam.send_port,
+        flags_readable,
+    )
+}
+
+fn get_readable_flags(flags: i32) -> String {
+    let mut res = String::new();
+    for bit in 0..31 {
+        if 0 != flags & 1 << bit {
+            let mut flag_added = 0;
+            if 1 << bit == 0x2 {
+                res += "OAUTH2 ";
+                flag_added = 1;
+            }
+            if 1 << bit == 0x4 {
+                res += "AUTH_NORMAL ";
+                flag_added = 1;
+            }
+            if 1 << bit == 0x100 {
+                res += "IMAP_STARTTLS ";
+                flag_added = 1;
+            }
+            if 1 << bit == 0x200 {
+                res += "IMAP_SSL ";
+                flag_added = 1;
+            }
+            if 1 << bit == 0x400 {
+                res += "IMAP_PLAIN ";
+                flag_added = 1;
+            }
+            if 1 << bit == 0x10000 {
+                res += "SMTP_STARTTLS ";
+                flag_added = 1
+            }
+            if 1 << bit == 0x20000 {
+                res += "SMTP_SSL ";
+                flag_added = 1
+            }
+            if 1 << bit == 0x40000 {
+                res += "SMTP_PLAIN ";
+                flag_added = 1
+            }
+            if 0 == flag_added {
+                res += &format!("{:#0x}", 1 << bit);
+            }
+        }
+    }
+    if res.is_empty() {
+        res += "0";
+    }
+
+    res
+}
--- a/src/dc_mimefactory.rs
+++ b/src/dc_mimefactory.rs
@@ -37,8 +37,8 @@ pub struct dc_mimefactory_t<'a> {
    pub timestamp: i64,
    pub rfc724_mid: *mut libc::c_char,
    pub loaded: dc_mimefactory_loaded_t,
-    pub msg: Message,
-    pub chat: Option<Chat>,
+    pub msg: Message<'a>,
+    pub chat: Option<Chat<'a>>,
    pub increation: libc::c_int,
    pub in_reply_to: *mut libc::c_char,
    pub references: *mut libc::c_char,
@@ -148,7 +148,7 @@ pub unsafe fn dc_mimefactory_load_msg(
                    for row in rows {
                        let (authname, addr) = row?;
                        let addr_c = addr.strdup();
-                        if !clist_search_string_nocase(factory.recipients_addr, addr_c) {
+                        if clist_search_string_nocase(factory.recipients_addr, addr_c) == 0 {
                            clist_insert_after(
                                factory.recipients_names,
                                (*factory.recipients_names).last,
@@ -183,7 +183,7 @@ pub unsafe fn dc_mimefactory_load_msg(
                .unwrap_or_default();

            if !email_to_remove.is_empty() && email_to_remove != self_addr {
-                if !clist_search_string_nocase(factory.recipients_addr, email_to_remove_c) {
+                if clist_search_string_nocase(factory.recipients_addr, email_to_remove_c) == 0 {
                    clist_insert_after(
                        factory.recipients_names,
                        (*factory.recipients_names).last,
@@ -225,7 +225,7 @@ pub unsafe fn dc_mimefactory_load_msg(
        Err(err) => {
            error!(
                context,
-                "mimefactory: failed to load mime_in_reply_to: {:?}", err
+                0, "mimefactory: failed to load mime_in_reply_to: {:?}", err
            );
        }
    }
@@ -335,10 +335,7 @@ pub unsafe fn dc_mimefactory_load_mdn<'a>(
 }

 // TODO should return bool /rtn
-pub unsafe fn dc_mimefactory_render(
-    context: &Context,
-    factory: &mut dc_mimefactory_t,
-) -> libc::c_int {
+pub unsafe fn dc_mimefactory_render(factory: &mut dc_mimefactory_t) -> libc::c_int {
    let subject: *mut mailimf_subject;
    let mut ok_to_continue = true;
    let imf_fields: *mut mailimf_fields;
@@ -551,7 +548,7 @@ pub unsafe fn dc_mimefactory_render(
                        dc_encode_header_words(name.as_ptr()),
                    ),
                );
-                if command == DC_CMD_MEMBER_REMOVED_FROM_GROUP {
+                if command == 5 {
                    let email_to_remove = factory
                        .msg
                        .param
@@ -570,7 +567,7 @@ pub unsafe fn dc_mimefactory_render(
                            ),
                        );
                    }
-                } else if command == DC_CMD_MEMBER_ADDED_TO_GROUP {
+                } else if command == 4 {
                    let msg = &factory.msg;
                    do_gossip = 1;
                    let email_to_add = msg.param.get(Param::Arg).unwrap_or_default().strdup();
@@ -589,7 +586,8 @@ pub unsafe fn dc_mimefactory_render(
                    }
                    if 0 != msg.param.get_int(Param::Arg2).unwrap_or_default() & 0x1 {
                        info!(
-                            context,
+                            msg.context,
+                            0,
                            "sending secure-join message \'{}\' >>>>>>>>>>>>>>>>>>>>>>>>>",
                            "vg-member-added",
                        );
@@ -601,7 +599,7 @@ pub unsafe fn dc_mimefactory_render(
                            ),
                        );
                    }
-                } else if command == DC_CMD_GROUPNAME_CHANGED {
+                } else if command == 2 {
                    let msg = &factory.msg;

                    let value_to_add = msg.param.get(Param::Arg).unwrap_or_default().strdup();
@@ -614,7 +612,7 @@ pub unsafe fn dc_mimefactory_render(
                            value_to_add,
                        ),
                    );
-                } else if command == DC_CMD_GROUPIMAGE_CHANGED {
+                } else if command == 3 {
                    let msg = &factory.msg;
                    grpimage = msg.param.get(Param::Arg);
                    if grpimage.is_none() {
@@ -628,7 +626,7 @@ pub unsafe fn dc_mimefactory_render(
                    }
                }
            }
-            if command == DC_CMD_LOCATION_STREAMING_ENABLED {
+            if command == 8 {
                mailimf_fields_add(
                    imf_fields,
                    mailimf_field_new_custom(
@@ -639,7 +637,7 @@ pub unsafe fn dc_mimefactory_render(
                    ),
                );
            }
-            if command == DC_CMD_AUTOCRYPT_SETUP_MESSAGE {
+            if command == 6 {
                mailimf_fields_add(
                    imf_fields,
                    mailimf_field_new_custom(
@@ -652,12 +650,13 @@ pub unsafe fn dc_mimefactory_render(
                    .stock_str(StockMessage::AcSetupMsgBody)
                    .strdup();
            }
-            if command == DC_CMD_SECUREJOIN_MESSAGE {
+            if command == 7 {
                let msg = &factory.msg;
                let step = msg.param.get(Param::Arg).unwrap_or_default().strdup();
                if strlen(step) > 0 {
                    info!(
-                        context,
+                        msg.context,
+                        0,
                        "sending secure-join message \'{}\' >>>>>>>>>>>>>>>>>>>>>>>>>",
                        as_str(step),
                    );
@@ -727,14 +726,12 @@ pub unsafe fn dc_mimefactory_render(
                }
            }
            if let Some(grpimage) = grpimage {
-                info!(factory.context, "setting group image '{}'", grpimage);
-                let mut meta = dc_msg_new_untyped();
+                let mut meta = dc_msg_new_untyped(factory.context);
                meta.type_0 = Viewtype::Image;
                meta.param.set(Param::File, grpimage);

                let mut filename_as_sent = ptr::null_mut();
                meta_part = build_body_file(
-                    context,
                    &meta,
                    b"group-image\x00" as *const u8 as *const libc::c_char,
                    &mut filename_as_sent,
@@ -837,7 +834,7 @@ pub unsafe fn dc_mimefactory_render(

            /* add attachment part */
            if chat::msgtype_has_file(factory.msg.type_0) {
-                if !is_file_size_okay(context, &factory.msg) {
+                if !is_file_size_okay(&factory.msg) {
                    let error: *mut libc::c_char = dc_mprintf(
                        b"Message exceeds the recommended %i MB.\x00" as *const u8
                            as *const libc::c_char,
@@ -848,7 +845,7 @@ pub unsafe fn dc_mimefactory_render(
                    ok_to_continue = false;
                } else {
                    let file_part: *mut mailmime =
-                        build_body_file(context, &factory.msg, ptr::null(), ptr::null_mut());
+                        build_body_file(&factory.msg, ptr::null(), ptr::null_mut());
                    if !file_part.is_null() {
                        mailmime_smart_add_part(message, file_part);
                        parts += 1
@@ -896,9 +893,12 @@ pub unsafe fn dc_mimefactory_render(
                        mailmime_smart_add_part(message, kml_mime_part);
                    }

-                    if location::is_sending_locations_to_chat(context, factory.msg.chat_id) {
+                    if location::is_sending_locations_to_chat(
+                        factory.msg.context,
+                        factory.msg.chat_id,
+                    ) {
                        if let Ok((kml_file, last_added_location_id)) =
-                            location::get_kml(context, factory.msg.chat_id)
+                            location::get_kml(factory.msg.context, factory.msg.chat_id)
                        {
                            let content_type = mailmime_content_new_with_str(
                                b"application/vnd.google-earth.kml+xml\x00" as *const u8
@@ -951,7 +951,7 @@ pub unsafe fn dc_mimefactory_render(
                    .stock_str(StockMessage::EncryptedMsg)
                    .into_owned()
            } else {
-                to_string(dc_msg_get_summarytext(context, &mut factory.msg, 32))
+                to_string(dc_msg_get_summarytext(&mut factory.msg, 32))
            };
            let p2 = factory
                .context
@@ -995,8 +995,7 @@ pub unsafe fn dc_mimefactory_render(
                    e.as_ptr(),
                );
            } else {
-                subject_str =
-                    get_subject(context, factory.chat.as_ref(), &mut factory.msg, afwd_email)
+                subject_str = get_subject(factory.chat.as_ref(), &mut factory.msg, afwd_email)
            }
            subject = mailimf_subject_new(dc_encode_header_words(subject_str));
            mailimf_fields_add(
@@ -1062,7 +1061,6 @@ pub unsafe fn dc_mimefactory_render(
 }

 unsafe fn get_subject(
-    context: &Context,
    chat: Option<&Chat>,
    msg: &mut Message,
    afwd_email: libc::c_int,
@@ -1072,6 +1070,7 @@ unsafe fn get_subject(
    }

    let chat = chat.unwrap();
+    let context = chat.context;
    let ret: *mut libc::c_char;

    let raw_subject = {
@@ -1084,7 +1083,7 @@ unsafe fn get_subject(
    } else {
        b"\x00" as *const u8 as *const libc::c_char
    };
-    if msg.param.get_int(Param::Cmd).unwrap_or_default() == DC_CMD_AUTOCRYPT_SETUP_MESSAGE {
+    if msg.param.get_int(Param::Cmd).unwrap_or_default() == 6 {
        ret = context.stock_str(StockMessage::AcSetupMsgSubject).strdup()
    } else if chat.typ == Chattype::Group || chat.typ == Chattype::VerifiedGroup {
        ret = format!(
@@ -1136,7 +1135,6 @@ unsafe fn build_body_text(text: *mut libc::c_char) -> *mut mailmime {

 #[allow(non_snake_case)]
 unsafe fn build_body_file(
-    context: &Context,
    msg: &Message,
    mut base_name: *const libc::c_char,
    ret_file_name_as_sent: *mut *mut libc::c_char,
@@ -1220,7 +1218,7 @@ unsafe fn build_body_file(
            /* create mime part, for Content-Disposition, see RFC 2183.
            `Content-Disposition: attachment` seems not to make a difference to `Content-Disposition: inline` at least on tested Thunderbird and Gma'l in 2017.
            But I've heard about problems with inline and outl'k, so we just use the attachment-type until we run into other problems ... */
-            needs_ext = dc_needs_ext_header(as_str(filename_to_send));
+            needs_ext = dc_needs_ext_header(filename_to_send);
            mime_fields = mailmime_fields_new_filename(
                MAILMIME_DISPOSITION_TYPE_ATTACHMENT as libc::c_int,
                if needs_ext {
@@ -1257,7 +1255,7 @@ unsafe fn build_body_file(
                                        strdup(
                                            b"filename*\x00" as *const u8 as *const libc::c_char,
                                        ),
-                                        dc_encode_ext_header(as_str(filename_to_send)).strdup(),
+                                        dc_encode_ext_header(filename_to_send),
                                    ),
                                );
                            if !parm.is_null() {
@@ -1289,7 +1287,7 @@ unsafe fn build_body_file(
                ) as *mut libc::c_void,
            );
            mime_sub = mailmime_new_empty(content, mime_fields);
-            mailmime_set_body_file(mime_sub, dc_get_abs_path(context, path_filename));
+            mailmime_set_body_file(mime_sub, dc_get_abs_path(msg.context, path_filename));
            if !ret_file_name_as_sent.is_null() {
                *ret_file_name_as_sent = dc_strdup(filename_to_send)
            }
@@ -1306,10 +1304,10 @@ unsafe fn build_body_file(
 /*******************************************************************************
 * Render
 ******************************************************************************/
-unsafe fn is_file_size_okay(context: &Context, msg: &Message) -> bool {
+unsafe fn is_file_size_okay(msg: &Message) -> bool {
    let mut file_size_okay = true;
    let path = msg.param.get(Param::File).unwrap_or_default();
-    let bytes = dc_get_filebytes(context, &path);
+    let bytes = dc_get_filebytes(msg.context, &path);

    if bytes > (49 * 1024 * 1024 / 4 * 3) {
        file_size_okay = false;
--- a/src/dc_mimeparser.rs
+++ b/src/dc_mimeparser.rs
@@ -32,10 +32,10 @@ dc_mimeparser_t has no deep dependencies to Context or to the database
 #[repr(C)]
 pub struct dc_mimepart_t {
    pub type_0: Viewtype,
-    pub is_meta: bool,
+    pub is_meta: libc::c_int,
    pub int_mimetype: libc::c_int,
    pub msg: Option<String>,
-    pub msg_raw: Option<String>,
+    pub msg_raw: *mut libc::c_char,
    pub bytes: libc::c_int,
    pub param: Params,
 }
@@ -50,11 +50,11 @@ pub struct dc_mimeparser_t<'a> {
    pub header: HashMap<String, *mut mailimf_field>,
    pub header_root: *mut mailimf_fields,
    pub header_protected: *mut mailimf_fields,
-    pub subject: Option<String>,
+    pub subject: *mut libc::c_char,
    pub is_send_by_messenger: bool,
-    pub decrypting_failed: bool,
+    pub decrypting_failed: libc::c_int,
    pub e2ee_helper: E2eeHelper,
-    pub is_forwarded: bool,
+    pub is_forwarded: libc::c_int,
    pub context: &'a Context,
    pub reports: Vec<*mut mailmime>,
    pub is_system_message: libc::c_int,
@@ -69,11 +69,11 @@ pub fn dc_mimeparser_new(context: &Context) -> dc_mimeparser_t {
        header: Default::default(),
        header_root: std::ptr::null_mut(),
        header_protected: std::ptr::null_mut(),
-        subject: None,
+        subject: std::ptr::null_mut(),
        is_send_by_messenger: false,
-        decrypting_failed: false,
+        decrypting_failed: 0,
        e2ee_helper: Default::default(),
-        is_forwarded: false,
+        is_forwarded: 0,
        context,
        reports: Vec::new(),
        is_system_message: 0,
@@ -87,7 +87,10 @@ pub unsafe fn dc_mimeparser_unref(mimeparser: &mut dc_mimeparser_t) {
 }

 unsafe fn dc_mimeparser_empty(mimeparser: &mut dc_mimeparser_t) {
-    mimeparser.parts = vec![];
+    for part in mimeparser.parts.drain(..) {
+        dc_mimepart_unref(part);
+    }
+    assert!(mimeparser.parts.is_empty());
    mimeparser.header_root = ptr::null_mut();
    mimeparser.header.clear();
    if !mimeparser.header_protected.is_null() {
@@ -96,20 +99,26 @@ unsafe fn dc_mimeparser_empty(mimeparser: &mut dc_mimeparser_t) {
    }
    mimeparser.is_send_by_messenger = false;
    mimeparser.is_system_message = 0i32;
-    mimeparser.subject = None;
+    free(mimeparser.subject as *mut libc::c_void);
+    mimeparser.subject = ptr::null_mut();
    if !mimeparser.mimeroot.is_null() {
        mailmime_free(mimeparser.mimeroot);
        mimeparser.mimeroot = ptr::null_mut()
    }
-    mimeparser.is_forwarded = false;
+    mimeparser.is_forwarded = 0i32;
    mimeparser.reports.clear();
-    mimeparser.decrypting_failed = false;
+    mimeparser.decrypting_failed = 0i32;
    mimeparser.e2ee_helper.thanks();

    mimeparser.location_kml = None;
    mimeparser.message_kml = None;
 }

+unsafe fn dc_mimepart_unref(mut mimepart: dc_mimepart_t) {
+    mimepart.msg = None;
+    free(mimepart.msg_raw as *mut libc::c_void);
+    mimepart.msg_raw = ptr::null_mut();
+}
 const DC_MIMETYPE_AC_SETUP_FILE: i32 = 111;

 pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_mimeparser_t<'a> {
@@ -132,9 +141,7 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
        dc_mimeparser_parse_mime_recursive(mimeparser_ref, mimeparser_ref.mimeroot);
        let field: *mut mailimf_field = dc_mimeparser_lookup_field(&mimeparser, "Subject");
        if !field.is_null() && (*field).fld_type == MAILIMF_FIELD_SUBJECT as libc::c_int {
-            let subj = (*(*field).fld_data.fld_subject).sbj_value;
-
-            mimeparser.subject = as_opt_str(subj).map(dc_decode_header_words_safe);
+            mimeparser.subject = dc_decode_header_words((*(*field).fld_data.fld_subject).sbj_value)
        }
        if !dc_mimeparser_lookup_optional_field(&mut mimeparser, "Chat-Version").is_null() {
            mimeparser.is_send_by_messenger = true
@@ -162,7 +169,8 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
                let mut i = 0;
                while i != mimeparser.parts.len() {
                    if mimeparser.parts[i].int_mimetype != 111 {
-                        mimeparser.parts.remove(i);
+                        let part = mimeparser.parts.remove(i);
+                        dc_mimepart_unref(part);
                    } else {
                        i += 1;
                    }
@@ -188,7 +196,7 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
                if mimeparser.parts.len() >= 2 {
                    let imgpart = &mut mimeparser.parts[1];
                    if imgpart.type_0 == Viewtype::Image {
-                        imgpart.is_meta = true;
+                        imgpart.is_meta = 1i32
                    }
                }
            }
@@ -204,7 +212,7 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
                        || filepart.type_0 == Viewtype::Voice
                        || filepart.type_0 == Viewtype::Video
                        || filepart.type_0 == Viewtype::File)
-                    && !filepart.is_meta
+                    && 0 == filepart.is_meta
            };

            if need_drop {
@@ -217,49 +225,55 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
                mimeparser.parts[0].msg = None;

                // swap new with old
-                std::mem::replace(&mut mimeparser.parts[0], filepart);
+                let old = std::mem::replace(&mut mimeparser.parts[0], filepart);
+
+                // unref old one
+                dc_mimepart_unref(old);
            }
        }
-        if let Some(ref subject) = mimeparser.subject {
+        if !mimeparser.subject.is_null() {
            let mut prepend_subject: libc::c_int = 1i32;
-            if !mimeparser.decrypting_failed {
-                let colon = subject.find(':');
-                if colon == Some(2)
-                    || colon == Some(3)
+            if 0 == mimeparser.decrypting_failed {
+                let p: *mut libc::c_char = strchr(mimeparser.subject, ':' as i32);
+                if p.wrapping_offset_from(mimeparser.subject) == 2
+                    || p.wrapping_offset_from(mimeparser.subject) == 3
                    || mimeparser.is_send_by_messenger
-                    || subject.contains("Chat:")
+                    || !strstr(
+                        mimeparser.subject,
+                        b"Chat:\x00" as *const u8 as *const libc::c_char,
+                    )
+                    .is_null()
                {
                    prepend_subject = 0i32
                }
            }
            if 0 != prepend_subject {
-                let subj = if let Some(n) = subject.find('[') {
-                    &subject[0..n]
-                } else {
-                    subject
+                let subj: *mut libc::c_char = dc_strdup(mimeparser.subject);
+                let p_0: *mut libc::c_char = strchr(subj, '[' as i32);
+                if !p_0.is_null() {
+                    *p_0 = 0i32 as libc::c_char
                }
-                .trim();
-
-                if !subj.is_empty() {
-                    let subj_c = CString::yolo(subj);
+                dc_trim(subj);
+                if 0 != *subj.offset(0isize) {
                    for part in mimeparser.parts.iter_mut() {
                        if part.type_0 == Viewtype::Text {
                            let msg_c = part.msg.as_ref().unwrap().strdup();
                            let new_txt: *mut libc::c_char = dc_mprintf(
                                b"%s \xe2\x80\x93 %s\x00" as *const u8 as *const libc::c_char,
-                                subj_c.as_ptr(),
+                                subj,
                                msg_c,
                            );
                            free(msg_c.cast());
-                            part.msg = Some(to_string_lossy(new_txt));
+                            part.msg = Some(to_string(new_txt));
                            free(new_txt.cast());
                            break;
                        }
                    }
                }
+                free(subj as *mut libc::c_void);
            }
        }
-        if mimeparser.is_forwarded {
+        if 0 != mimeparser.is_forwarded {
            for part in mimeparser.parts.iter_mut() {
                part.param.set_int(Param::Forwarded, 1);
            }
@@ -287,7 +301,7 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
                }
            }
        }
-        if !mimeparser.decrypting_failed {
+        if 0 == mimeparser.decrypting_failed {
            let dn_field: *const mailimf_optional_field = dc_mimeparser_lookup_optional_field(
                &mimeparser,
                "Chat-Disposition-Notification-To",
@@ -336,12 +350,10 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
    if dc_mimeparser_get_last_nonmeta(&mut mimeparser).is_none() && mimeparser.reports.is_empty() {
        let mut part_5 = dc_mimepart_new();
        part_5.type_0 = Viewtype::Text;
-        part_5.msg = Some("".into());
-
-        if let Some(ref subject) = mimeparser.subject {
-            if !mimeparser.is_send_by_messenger {
-                part_5.msg = Some(subject.to_string())
-            }
+        if !mimeparser.subject.is_null() && !mimeparser.is_send_by_messenger {
+            part_5.msg = Some(to_string(mimeparser.subject));
+        } else {
+            part_5.msg = Some("".into());
        }
        mimeparser.parts.push(part_5);
    };
@@ -354,10 +366,10 @@ pub unsafe fn dc_mimeparser_parse<'a>(context: &'a Context, body: &[u8]) -> dc_m
 unsafe fn dc_mimepart_new() -> dc_mimepart_t {
    dc_mimepart_t {
        type_0: Viewtype::Unknown,
-        is_meta: false,
+        is_meta: 0,
        int_mimetype: 0,
        msg: None,
-        msg_raw: None,
+        msg_raw: std::ptr::null_mut(),
        bytes: 0,
        param: Params::new(),
    }
@@ -366,7 +378,11 @@ unsafe fn dc_mimepart_new() -> dc_mimepart_t {
 pub fn dc_mimeparser_get_last_nonmeta<'a>(
    mimeparser: &'a mut dc_mimeparser_t,
 ) -> Option<&'a mut dc_mimepart_t> {
-    mimeparser.parts.iter_mut().rev().find(|part| !part.is_meta)
+    mimeparser
+        .parts
+        .iter_mut()
+        .rev()
+        .find(|part| part.is_meta == 0)
 }

 /*the result must be freed*/
@@ -454,7 +470,7 @@ unsafe fn dc_mimeparser_parse_mime_recursive(
        {
            info!(
                mimeparser.context,
-                "Protected headers found in text/rfc822-headers attachment: Will be ignored.",
+                0, "Protected headers found in text/rfc822-headers attachment: Will be ignored.",
            );
            return 0i32;
        }
@@ -468,7 +484,7 @@ unsafe fn dc_mimeparser_parse_mime_recursive(
            ) != MAILIMF_NO_ERROR as libc::c_int
                || mimeparser.header_protected.is_null()
            {
-                warn!(mimeparser.context, "Protected headers parsing error.",);
+                warn!(mimeparser.context, 0, "Protected headers parsing error.",);
            } else {
                hash_header(
                    &mut mimeparser.header,
@@ -479,6 +495,7 @@ unsafe fn dc_mimeparser_parse_mime_recursive(
        } else {
            info!(
                mimeparser.context,
+                0,
                "Protected headers found in MIME header: Will be ignored as we already found an outer one."
            );
        }
@@ -579,12 +596,12 @@ unsafe fn dc_mimeparser_parse_mime_recursive(
                        .stock_str(StockMessage::CantDecryptMsgBody);

                    let txt = format!("[{}]", msg_body);
-                    part.msg_raw = Some(txt.clone());
+                    part.msg_raw = txt.strdup();
                    part.msg = Some(txt);

                    mimeparser.parts.push(part);
                    any_part_added = 1i32;
-                    mimeparser.decrypting_failed = true;
+                    mimeparser.decrypting_failed = 1i32
                }
                46 => {
                    cur = (*(*mime).mm_data.mm_multipart.mm_mp_list).first;
@@ -660,6 +677,7 @@ unsafe fn dc_mimeparser_parse_mime_recursive(
                    if plain_cnt == 1i32 && html_cnt == 1i32 {
                        warn!(
                            mimeparser.context,
+                            0i32,
                            "HACK: multipart/mixed message found with PLAIN and HTML, we\'ll skip the HTML part as this seems to be unwanted."
                        );
                        skip_part = html_part
@@ -1064,7 +1082,7 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                                );

                                let (res, _, _) = encoding.decode(data);
-                                info!(mimeparser.context, "decoded message: '{}'", res);
+                                info!(mimeparser.context, 0, "decoded message: '{}'", res);
                                if res.is_empty() {
                                    /* no error - but nothing to add */
                                    ok_to_continue = false;
@@ -1077,6 +1095,7 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                            } else {
                                warn!(
                                    mimeparser.context,
+                                    0,
                                    "Cannot convert {} bytes from \"{}\" to \"utf-8\".",
                                    decoded_data_bytes as libc::c_int,
                                    as_str(charset),
@@ -1105,18 +1124,13 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                                part.type_0 = Viewtype::Text;
                                part.int_mimetype = mime_type;
                                part.msg = Some(simplified_txt);
-                                part.msg_raw = {
-                                    let raw_c =
-                                        strndup(decoded_data, decoded_data_bytes as libc::c_ulong);
-                                    let raw = to_string_lossy(raw_c);
-                                    free(raw_c.cast());
-                                    Some(raw)
-                                };
+                                part.msg_raw =
+                                    strndup(decoded_data, decoded_data_bytes as libc::c_ulong);
                                do_add_single_part(mimeparser, part);
                            }

                            if simplifier.unwrap().is_forwarded {
-                                mimeparser.is_forwarded = true;
+                                mimeparser.is_forwarded = 1i32
                            }
                        }
                    }
@@ -1166,7 +1180,7 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                                                    9,
                                                ) == 0i32
                                            {
-                                                filename_parts += &to_string_lossy(
+                                                filename_parts += &to_string(
                                                    (*(*dsp_param).pa_data.pa_parameter).pa_value,
                                                );
                                            } else if (*dsp_param).pa_type
@@ -1195,8 +1209,8 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                        }
                        if !filename_parts.is_empty() {
                            free(desired_filename as *mut libc::c_void);
-                            desired_filename =
-                                dc_decode_ext_header(filename_parts.as_bytes()).strdup();
+                            let parts_c = CString::yolo(filename_parts);
+                            desired_filename = dc_decode_ext_header(parts_c.as_ptr());
                        }
                        if desired_filename.is_null() {
                            let param = mailmime_find_ct_parameter(
@@ -1270,7 +1284,7 @@ unsafe fn dc_mimeparser_add_single_part_if_known(
                                    mimeparser,
                                    msg_type,
                                    mime_type,
-                                    as_str(raw_mime),
+                                    raw_mime,
                                    decoded_data,
                                    decoded_data_bytes,
                                    desired_filename,
@@ -1298,7 +1312,7 @@ unsafe fn do_add_single_file_part(
    parser: &mut dc_mimeparser_t,
    msg_type: Viewtype,
    mime_type: libc::c_int,
-    raw_mime: &str,
+    raw_mime: *const libc::c_char,
    decoded_data: *const libc::c_char,
    decoded_data_bytes: size_t,
    desired_filename: *const libc::c_char,
@@ -1324,7 +1338,7 @@ unsafe fn do_add_single_file_part(
            part.int_mimetype = mime_type;
            part.bytes = decoded_data_bytes as libc::c_int;
            part.param.set(Param::File, as_str(pathNfilename));
-            part.param.set(Param::MimeType, raw_mime);
+            part.param.set(Param::MimeType, as_str(raw_mime));
            if mime_type == 80 {
                assert!(!decoded_data.is_null(), "invalid image data");
                let data = std::slice::from_raw_parts(
@@ -1640,8 +1654,10 @@ pub unsafe fn dc_mimeparser_repl_msg_by_error(
    }
    let part = &mut mimeparser.parts[0];
    part.type_0 = Viewtype::Text;
-    part.msg = Some(format!("[{}]", to_string_lossy(error_msg)));
-    mimeparser.parts.truncate(1);
+    part.msg = Some(format!("[{}]", to_string(error_msg)));
+    for part in mimeparser.parts.drain(1..) {
+        dc_mimepart_unref(part);
+    }
    assert_eq!(mimeparser.parts.len(), 1);
 }

@@ -1798,7 +1814,10 @@ mod tests {
            let raw = b"Content-Type: multipart/mixed; boundary=\"==break==\";\nSubject: outer-subject\nX-Special-A: special-a\nFoo: Bar\nChat-Version: 0.0\n\n--==break==\nContent-Type: text/plain; protected-headers=\"v1\";\nSubject: inner-subject\nX-Special-B: special-b\nFoo: Xy\nChat-Version: 1.0\n\ntest1\n\n--==break==--\n\n\x00";
            let mut mimeparser = dc_mimeparser_parse(&context.ctx, &raw[..]);

-            assert_eq!(mimeparser.subject, Some("inner-subject".into()));
+            assert_eq!(
+                &to_string(mimeparser.subject as *const libc::c_char),
+                "inner-subject",
+            );

            let mut of: *mut mailimf_optional_field =
                dc_mimeparser_lookup_optional_field(&mimeparser, "X-Special-A");
--- a/src/dc_receive_imf.rs
+++ b/src/dc_receive_imf.rs
@@ -1,4 +1,3 @@
-use std::ffi::CString;
 use std::ptr;

 use itertools::join;
@@ -16,6 +15,7 @@ use crate::constants::*;
 use crate::contact::*;
 use crate::context::{do_heuristics_moves, Context};
 use crate::dc_mimeparser::*;
+use crate::dc_securejoin::*;
 use crate::dc_strencode::*;
 use crate::dc_tools::*;
 use crate::error::Result;
@@ -24,7 +24,6 @@ use crate::location;
 use crate::message::*;
 use crate::param::*;
 use crate::peerstate::*;
-use crate::securejoin::handle_securejoin_handshake;
 use crate::sql;
 use crate::stock::StockMessage;
 use crate::types::*;
@@ -41,6 +40,7 @@ pub unsafe fn dc_receive_imf(
 ) {
    info!(
        context,
+        0,
        "Receiving message {}/{}...",
        if !server_folder.as_ref().is_empty() {
            server_folder.as_ref()
@@ -60,7 +60,7 @@ pub unsafe fn dc_receive_imf(

    if mime_parser.header.is_empty() {
        // Error - even adding an empty record won't help as we do not know the message ID
-        info!(context, "No header.");
+        info!(context, 0, "No header.");
        return;
    }

@@ -188,7 +188,7 @@ pub unsafe fn dc_receive_imf(
            &mut created_db_entries,
            &mut create_event_to_send,
        ) {
-            info!(context, "{}", err);
+            info!(context, 0, "{}", err);

            cleanup(
                context,
@@ -242,6 +242,7 @@ pub unsafe fn dc_receive_imf(

    info!(
        context,
+        0,
        "received message {} has Message-Id: {}",
        server_uid,
        to_string(rfc724_mid)
@@ -399,7 +400,7 @@ unsafe fn add_parts(
            msgrmsg = 1;
            *chat_id = 0;
            allow_creation = 1;
-            let handshake = handle_securejoin_handshake(context, mime_parser, *from_id);
+            let handshake = dc_handle_securejoin_handshake(context, mime_parser, *from_id);
            if 0 != handshake & DC_HANDSHAKE_STOP_NORMAL_PROCESSING {
                *hidden = 1;
                *add_delete_job = handshake & DC_HANDSHAKE_ADD_DELETE_JOB;
@@ -445,7 +446,10 @@ unsafe fn add_parts(
            // check if the message belongs to a mailing list
            if dc_mimeparser_is_mailinglist_message(mime_parser) {
                *chat_id = 3;
-                info!(context, "Message belongs to a mailing list and is ignored.",);
+                info!(
+                    context,
+                    0, "Message belongs to a mailing list and is ignored.",
+                );
            }
        }

@@ -477,7 +481,7 @@ unsafe fn add_parts(
                    Contact::scaleup_origin_by_id(context, *from_id, Origin::IncomingReplyTo);
                    info!(
                        context,
-                        "Message is a reply to a known message, mark sender as known.",
+                        0, "Message is a reply to a known message, mark sender as known.",
                    );
                    if !incoming_origin.is_verified() {
                        *incoming_origin = Origin::IncomingReplyTo;
@@ -621,7 +625,7 @@ unsafe fn add_parts(
            |mut stmt, conn| {
                for i in 0..icnt {
                    let part = &mut mime_parser.parts[i];
-                    if part.is_meta {
+                    if part.is_meta != 0 {
                        continue;
                    }

@@ -637,19 +641,14 @@ unsafe fn add_parts(
                        }
                    }
                    if part.type_0 == Viewtype::Text {
-                        let msg_raw =
-                            CString::yolo(part.msg_raw.as_ref().cloned().unwrap_or_default());
-                        let subject_c = CString::yolo(
-                            mime_parser
-                                .subject
-                                .as_ref()
-                                .map(|s| s.to_string())
-                                .unwrap_or("".into()),
-                        );
                        txt_raw = dc_mprintf(
                            b"%s\n\n%s\x00" as *const u8 as *const libc::c_char,
-                            subject_c.as_ptr(),
-                            msg_raw.as_ptr(),
+                            if !mime_parser.subject.is_null() {
+                                mime_parser.subject
+                            } else {
+                                b"\x00" as *const u8 as *const libc::c_char
+                            },
+                            part.msg_raw,
                        )
                    }
                    if 0 != mime_parser.is_system_message {
@@ -719,7 +718,7 @@ unsafe fn add_parts(

    info!(
        context,
-        "Message has {} parts and is assigned to chat #{}.", icnt, *chat_id,
+        0, "Message has {} parts and is assigned to chat #{}.", icnt, *chat_id,
    );

    // check event to send
@@ -919,7 +918,7 @@ unsafe fn handle_reports(
    }
 }

-fn save_locations(
+unsafe fn save_locations(
    context: &Context,
    mime_parser: &dc_mimeparser_t,
    chat_id: u32,
@@ -957,7 +956,7 @@ fn save_locations(
                            insert_msg_id,
                            newest_location_id,
                        ) {
-                            error!(context, "Failed to set msg_location_id: {:?}", err);
+                            error!(context, 0, "Failed to set msg_location_id: {:?}", err);
                        }
                    }
                    send_event = true;
@@ -1035,6 +1034,7 @@ unsafe fn create_or_lookup_group(
    let group_explicitly_left: bool;
    let mut chat_id = 0;
    let mut chat_id_blocked = Blocked::Not;
+    let mut chat_id_verified = 0;
    let mut grpid = "".to_string();
    let mut grpname = std::ptr::null_mut();
    let to_ids_cnt = to_ids.len();
@@ -1045,7 +1045,7 @@ unsafe fn create_or_lookup_group(
    // pointer somewhere into mime_parser, must not be freed
    let mut X_MrAddToGrp = std::ptr::null_mut();
    let mut X_MrGrpNameChanged = 0;
-    let mut X_MrGrpImageChanged = "".to_string();
+    let mut X_MrGrpImageChanged = std::ptr::null();
    let mut better_msg: String = From::from("");
    let mut failure_reason = std::ptr::null_mut();

@@ -1074,6 +1074,7 @@ unsafe fn create_or_lookup_group(
    }
    set_better_msg(mime_parser, &better_msg);

+    // search the grpid in the header
    let optional_field = dc_mimeparser_lookup_optional_field(mime_parser, "Chat-Group-ID");
    if !optional_field.is_null() {
        grpid = to_string((*optional_field).fld_value)
@@ -1168,8 +1169,7 @@ unsafe fn create_or_lookup_group(
            let optional_field =
                dc_mimeparser_lookup_optional_field(mime_parser, "Chat-Group-Image");
            if !optional_field.is_null() {
-                // fld_value is a pointer somewhere into mime_parser, must not be freed
-                X_MrGrpImageChanged = as_str((*optional_field).fld_value).to_string();
+                X_MrGrpImageChanged = (*optional_field).fld_value
            }
            better_msg = context.stock_system_msg(
                StockMessage::MsgAddMember,
@@ -1193,11 +1193,14 @@ unsafe fn create_or_lookup_group(
                let optional_field =
                    dc_mimeparser_lookup_optional_field(mime_parser, "Chat-Group-Image");
                if !optional_field.is_null() {
-                    // fld_value is a pointer somewhere into mime_parser, must not be freed
-                    X_MrGrpImageChanged = as_str((*optional_field).fld_value).to_string();
+                    X_MrGrpImageChanged = (*optional_field).fld_value;
                    mime_parser.is_system_message = DC_CMD_GROUPIMAGE_CHANGED;
                    better_msg = context.stock_system_msg(
-                        if X_MrGrpImageChanged == "0" {
+                        if strcmp(
+                            X_MrGrpImageChanged,
+                            b"0\x00" as *const u8 as *const libc::c_char,
+                        ) == 0
+                        {
                            StockMessage::MsgGrpImgDeleted
                        } else {
                            StockMessage::MsgGrpImgChanged
@@ -1213,9 +1216,14 @@ unsafe fn create_or_lookup_group(
    set_better_msg(mime_parser, &better_msg);

    // check, if we have a chat with this group ID
-    let (mut chat_id, chat_id_verified, _blocked) = chat::get_chat_id_by_grpid(context, &grpid);
+    chat_id = chat::get_chat_id_by_grpid(
+        context,
+        &grpid,
+        Some(&mut chat_id_blocked),
+        &mut chat_id_verified,
+    );
    if chat_id != 0 {
-        if chat_id_verified
+        if 0 != chat_id_verified
            && 0 == check_verified_properties(
                context,
                mime_parser,
@@ -1312,7 +1320,6 @@ unsafe fn create_or_lookup_group(
    if !X_MrAddToGrp.is_null() || !X_MrRemoveFromGrp.is_null() {
        recreate_member_list = 1;
    } else if 0 != X_MrGrpNameChanged && !grpname.is_null() && strlen(grpname) < 200 {
-        info!(context, "updating grpname for chat {}", chat_id);
        if sql::execute(
            context,
            &context.sql,
@@ -1324,39 +1331,49 @@ unsafe fn create_or_lookup_group(
            context.call_cb(Event::CHAT_MODIFIED, chat_id as uintptr_t, 0);
        }
    }
-    if !X_MrGrpImageChanged.is_empty() {
-        info!(
-            context,
-            "grp-image-change {} chat {}", X_MrGrpImageChanged, chat_id
-        );
-        let mut changed = false;
-        let mut grpimage = "".to_string();
-        if X_MrGrpImageChanged == "0" {
-            changed = true;
+    if !X_MrGrpImageChanged.is_null() {
+        let mut ok = 0;
+        let mut grpimage = ptr::null_mut();
+        if strcmp(
+            X_MrGrpImageChanged,
+            b"0\x00" as *const u8 as *const libc::c_char,
+        ) == 0
+        {
+            ok = 1
        } else {
            for part in &mut mime_parser.parts {
                if part.type_0 == Viewtype::Image {
                    grpimage = part
                        .param
                        .get(Param::File)
-                        .map(|s| s.to_string())
-                        .unwrap_or_else(|| "".to_string());
-                    info!(context, "found image {:?}", grpimage);
-                    changed = true;
+                        .map(|s| s.strdup())
+                        .unwrap_or_else(|| std::ptr::null_mut());
+                    ok = 1
                }
            }
        }
-        if changed {
-            info!(context, "New group image set to '{}'.", grpimage);
+        if 0 != ok {
+            info!(
+                context,
+                0,
+                "New group image set to {}.",
+                if !grpimage.is_null() {
+                    "DELETED".to_string()
+                } else {
+                    to_string(grpimage)
+                },
+            );
            if let Ok(mut chat) = Chat::load_from_db(context, chat_id) {
-                if grpimage.is_empty() {
+                if grpimage.is_null() {
                    chat.param.remove(Param::ProfileImage);
                } else {
-                    chat.param.set(Param::ProfileImage, grpimage);
+                    chat.param.set(Param::ProfileImage, as_str(grpimage));
                }
-                chat.update_param(context).unwrap();
+                chat.update_param().unwrap();
                send_EVENT_CHAT_MODIFIED = 1;
            }
+
+            free(grpimage as *mut libc::c_void);
        }
    }

@@ -1557,8 +1574,8 @@ unsafe fn create_or_lookup_adhoc_group(
    }

    // use subject as initial chat name
-    if let Some(subject) = mime_parser.subject.as_ref().filter(|s| !s.is_empty()) {
-        grpname = subject.strdup();
+    if !mime_parser.subject.is_null() && 0 != *mime_parser.subject.offset(0isize) as libc::c_int {
+        grpname = dc_strdup(mime_parser.subject)
    } else {
        grpname = context
            .stock_string_repl_int(StockMessage::Member, member_ids.len() as libc::c_int)
@@ -1665,7 +1682,10 @@ fn hex_hash(s: impl AsRef<str>) -> String {
 }

 #[allow(non_snake_case)]
-fn search_chat_ids_by_contact_ids(context: &Context, unsorted_contact_ids: &Vec<u32>) -> Vec<u32> {
+unsafe fn search_chat_ids_by_contact_ids(
+    context: &Context,
+    unsorted_contact_ids: &Vec<u32>,
+) -> Vec<u32> {
    /* searches chat_id's by the given contact IDs, may return zero, one or more chat_id's */
    let mut contact_ids = Vec::with_capacity(23);
    let mut chat_ids = Vec::with_capacity(23);
@@ -1682,13 +1702,7 @@ fn search_chat_ids_by_contact_ids(context: &Context, unsorted_contact_ids: &Vec<
            let contact_ids_str = join(contact_ids.iter().map(|x| x.to_string()), ",");
            context.sql.query_map(
                format!(
-                    "SELECT DISTINCT cc.chat_id, cc.contact_id \
-                       FROM chats_contacts cc \
-                       LEFT JOIN chats c ON c.id=cc.chat_id \
-                       WHERE cc.chat_id IN(SELECT chat_id FROM chats_contacts WHERE contact_id IN({})) \
-                         AND c.type=120 \
-                         AND cc.contact_id!=1 \
-                       ORDER BY cc.chat_id, cc.contact_id;",
+                    "SELECT DISTINCT cc.chat_id, cc.contact_id  FROM chats_contacts cc  LEFT JOIN chats c ON c.id=cc.chat_id  WHERE cc.chat_id IN(SELECT chat_id FROM chats_contacts WHERE contact_id IN({}))   AND c.type=120   AND cc.contact_id!=1 ORDER BY cc.chat_id, cc.contact_id;",
                    contact_ids_str
                ),
                params![],
@@ -1700,15 +1714,15 @@ fn search_chat_ids_by_contact_ids(context: &Context, unsorted_contact_ids: &Vec<

                    for row in rows {
                        let (chat_id, contact_id) = row?;
-                        if chat_id != last_chat_id {
+                        if chat_id as u32 != last_chat_id {
                            if matches == contact_ids.len() && mismatches == 0 {
                                chat_ids.push(last_chat_id);
                            }
-                            last_chat_id = chat_id;
+                            last_chat_id = chat_id as u32;
                            matches = 0;
                            mismatches = 0;
                        }
-                        if matches < contact_ids.len() && contact_id == contact_ids[matches] {
+                        if contact_id == contact_ids[matches] {
                            matches += 1;
                        } else {
                            mismatches += 1;
@@ -1736,7 +1750,7 @@ unsafe fn check_verified_properties(
 ) -> libc::c_int {
    let verify_fail = |reason: String| {
        *failure_reason = format!("{}. See \"Info\" for details.", reason).strdup();
-        warn!(context, "{}", reason);
+        warn!(context, 0, "{}", reason);
    };

    let contact = match Contact::load_from_db(context, from_id) {
@@ -1760,8 +1774,7 @@ unsafe fn check_verified_properties(
        let peerstate = Peerstate::from_addr(context, &context.sql, contact.get_addr());

        if peerstate.is_none()
-            || contact.is_verified_ex(context, peerstate.as_ref())
-                != VerifiedStatus::BidirectVerified
+            || contact.is_verified_ex(peerstate.as_ref()) != VerifiedStatus::BidirectVerified
        {
            verify_fail("The sender of this message is not verified.".into());
            return 0;
@@ -1808,7 +1821,13 @@ unsafe fn check_verified_properties(
                || peerstate.verified_key_fingerprint != peerstate.public_key_fingerprint
                    && peerstate.verified_key_fingerprint != peerstate.gossip_key_fingerprint
            {
-                info!(context, "{} has verfied {}.", contact.get_addr(), to_addr,);
+                info!(
+                    context,
+                    0,
+                    "{} has verfied {}.",
+                    contact.get_addr(),
+                    to_addr,
+                );
                let fp = peerstate.gossip_key_fingerprint.clone();
                if let Some(fp) = fp {
                    peerstate.set_verified(0, &fp, 2);
--- a/src/dc_securejoin.rs
+++ b/src/dc_securejoin.rs
--- a/src/dc_strencode.rs
+++ b/src/dc_strencode.rs
@@ -1,31 +1,83 @@
-use std::borrow::Cow;
-use std::ffi::CString;
+use std::ffi::{CStr, CString};
 use std::ptr;

 use charset::Charset;
 use mmime::mailmime_decode::*;
 use mmime::mmapstring::*;
 use mmime::other::*;
-use percent_encoding::{percent_decode, utf8_percent_encode, AsciiSet, CONTROLS};

 use crate::dc_tools::*;
 use crate::types::*;
 use crate::x::*;

-/**
- * Encode non-ascii-strings as `=?UTF-8?Q?Bj=c3=b6rn_Petersen?=`.
- * Belongs to RFC 2047: https://tools.ietf.org/html/rfc2047
- *
- * We do not fold at position 72; this would result in empty words as `=?utf-8?Q??=` which are correct,
- * but cannot be displayed by some mail programs (eg. Android Stock Mail).
- * however, this is not needed, as long as _one_ word is not longer than 72 characters.
- * _if_ it is, the display may get weird.  This affects the subject only.
- * the best solution wor all this would be if libetpan encodes the line as only libetpan knowns when a header line is full.
- *
- * @param to_encode Null-terminated UTF-8-string to encode.
- * @return Returns the encoded string which must be free()'d when no longed needed.
- *     On errors, NULL is returned.
- */
+#[inline]
+fn isalnum(c: libc::c_int) -> libc::c_int {
+    if c < std::u8::MAX as libc::c_int {
+        (c as u8 as char).is_ascii_alphanumeric() as libc::c_int
+    } else {
+        0
+    }
+}
+
+/* ******************************************************************************
+ * URL encoding and decoding, RFC 3986
+ ******************************************************************************/
+unsafe fn int_2_uppercase_hex(code: libc::c_char) -> libc::c_char {
+    static mut HEX: [libc::c_char; 17] = [
+        48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 65, 66, 67, 68, 69, 70, 0,
+    ];
+
+    HEX[(code as libc::c_int & 15i32) as usize]
+}
+
+pub unsafe fn dc_urldecode(to_decode: *const libc::c_char) -> *mut libc::c_char {
+    let mut pstr: *const libc::c_char = to_decode;
+    if to_decode.is_null() {
+        return dc_strdup(b"\x00" as *const u8 as *const libc::c_char);
+    }
+    let buf: *mut libc::c_char = malloc(strlen(to_decode).wrapping_add(1)) as *mut libc::c_char;
+    let mut pbuf: *mut libc::c_char = buf;
+    assert!(!buf.is_null());
+
+    while 0 != *pstr {
+        if *pstr as libc::c_int == '%' as i32 {
+            if 0 != *pstr.offset(1isize) as libc::c_int && 0 != *pstr.offset(2isize) as libc::c_int
+            {
+                let fresh5 = pbuf;
+                pbuf = pbuf.offset(1);
+                *fresh5 = ((hex_2_int(*pstr.offset(1isize)) as libc::c_int) << 4i32
+                    | hex_2_int(*pstr.offset(2isize)) as libc::c_int)
+                    as libc::c_char;
+                pstr = pstr.offset(2isize)
+            }
+        } else if *pstr as libc::c_int == '+' as i32 {
+            let fresh6 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh6 = ' ' as i32 as libc::c_char
+        } else {
+            let fresh7 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh7 = *pstr
+        }
+        pstr = pstr.offset(1isize)
+    }
+    *pbuf = '\u{0}' as i32 as libc::c_char;
+
+    buf
+}
+
+fn hex_2_int(ch: libc::c_char) -> libc::c_char {
+    let ch = ch as u8 as char;
+    if !ch.is_ascii_hexdigit() {
+        return (ch.to_ascii_lowercase() as i32 - 'a' as i32 + 10) as libc::c_char;
+    }
+
+    match ch.to_digit(16) {
+        Some(res) => res as libc::c_char,
+        None => 0,
+    }
+}
+
 pub unsafe fn dc_encode_header_words(to_encode: *const libc::c_char) -> *mut libc::c_char {
    let mut ok_to_continue = true;
    let mut ret_str: *mut libc::c_char = ptr::null_mut();
@@ -238,88 +290,374 @@ pub unsafe fn dc_decode_header_words(in_0: *const libc::c_char) -> *mut libc::c_
    out
 }

-pub fn dc_decode_header_words_safe(input: &str) -> String {
-    static FROM_ENCODING: &[u8] = b"iso-8859-1\x00";
-    static TO_ENCODING: &[u8] = b"utf-8\x00";
-    let mut out = ptr::null_mut();
-    let mut cur_token = 0;
-    let input_c = CString::yolo(input);
-    unsafe {
-        let r = mailmime_encoded_phrase_parse(
-            FROM_ENCODING.as_ptr().cast(),
-            input_c.as_ptr(),
-            input.len(),
-            &mut cur_token,
-            TO_ENCODING.as_ptr().cast(),
-            &mut out,
-        );
-        if r as u32 != MAILIMF_NO_ERROR || out.is_null() {
-            input.to_string()
-        } else {
-            let res = to_string(out);
-            free(out.cast());
-            res
+#[cfg(test)]
+unsafe fn dc_encode_modified_utf7(
+    mut to_encode: *const libc::c_char,
+    change_spaces: libc::c_int,
+) -> *mut libc::c_char {
+    let mut utf8pos: libc::c_uint;
+    let mut utf8total: libc::c_uint;
+    let mut c: libc::c_uint;
+    let mut utf7mode: libc::c_uint;
+    let mut bitstogo: libc::c_uint;
+    let mut utf16flag: libc::c_uint;
+    let mut ucs4: libc::c_ulong = 0;
+    let mut bitbuf: libc::c_ulong = 0;
+    let mut dst: *mut libc::c_char;
+    let res: *mut libc::c_char;
+    if to_encode.is_null() {
+        return dc_strdup(b"\x00" as *const u8 as *const libc::c_char);
+    }
+    res = malloc(2usize.wrapping_mul(strlen(to_encode)).wrapping_add(1)) as *mut libc::c_char;
+    dst = res;
+    assert!(!dst.is_null());
+
+    utf7mode = 0i32 as libc::c_uint;
+    utf8total = 0i32 as libc::c_uint;
+    bitstogo = 0i32 as libc::c_uint;
+    utf8pos = 0i32 as libc::c_uint;
+    loop {
+        c = *to_encode as libc::c_uchar as libc::c_uint;
+        if !(c != '\u{0}' as i32 as libc::c_uint) {
+            break;
        }
-    }
-}
-
-pub fn dc_needs_ext_header(to_check: impl AsRef<str>) -> bool {
-    let to_check = to_check.as_ref();
-
-    if to_check.is_empty() {
-        return false;
-    }
-
-    to_check.chars().any(|c| {
-        !(c.is_ascii_alphanumeric()
-            || c == '-'
-            || c == '_'
-            || c == '_'
-            || c == '.'
-            || c == '~'
-            || c == '%')
-    })
-}
-
-const EXT_ASCII_ST: &AsciiSet = &CONTROLS
-    .add(b' ')
-    .add(b'-')
-    .add(b'_')
-    .add(b'.')
-    .add(b'~')
-    .add(b'%');
-
-/// Encode an UTF-8 string to the extended header format.
-pub fn dc_encode_ext_header(to_encode: impl AsRef<str>) -> String {
-    let encoded = utf8_percent_encode(to_encode.as_ref(), &EXT_ASCII_ST);
-    format!("utf-8''{}", encoded)
-}
-
-/// Decode an extended-header-format strings to UTF-8.
-pub fn dc_decode_ext_header(to_decode: &[u8]) -> Cow<str> {
-    if let Some(index) = bytes!(b'\'').find(to_decode) {
-        let (charset, rest) = to_decode.split_at(index);
-        if !charset.is_empty() {
-            // skip language
-            if let Some(index2) = bytes!(b'\'').find(&rest[1..]) {
-                let decoded = percent_decode(&rest[index2 + 2..]);
-
-                if charset != b"utf-8" && charset != b"UTF-8" {
-                    if let Some(encoding) = Charset::for_label(charset) {
-                        let bytes = decoded.collect::<Vec<u8>>();
-                        let (res, _, _) = encoding.decode(&bytes);
-                        return Cow::Owned(res.into_owned());
-                    } else {
-                        return decoded.decode_utf8_lossy();
-                    }
+        to_encode = to_encode.offset(1isize);
+        // normal character?
+        if c >= ' ' as i32 as libc::c_uint
+            && c <= '~' as i32 as libc::c_uint
+            && (c != '_' as i32 as libc::c_uint || 0 == change_spaces)
+        {
+            if 0 != utf7mode {
+                if 0 != bitstogo {
+                    let fresh8 = dst;
+                    dst = dst.offset(1);
+                    *fresh8 = BASE64CHARS
+                        [(bitbuf << (6i32 as libc::c_uint).wrapping_sub(bitstogo) & 0x3f) as usize]
+                }
+                let fresh9 = dst;
+                dst = dst.offset(1);
+                *fresh9 = '-' as i32 as libc::c_char;
+                utf7mode = 0i32 as libc::c_uint;
+                utf8pos = 0i32 as libc::c_uint;
+                bitstogo = 0i32 as libc::c_uint;
+                utf8total = 0i32 as libc::c_uint
+            }
+            if 0 != change_spaces && c == ' ' as i32 as libc::c_uint {
+                let fresh10 = dst;
+                dst = dst.offset(1);
+                *fresh10 = '_' as i32 as libc::c_char
+            } else {
+                let fresh11 = dst;
+                dst = dst.offset(1);
+                *fresh11 = c as libc::c_char
+            }
+            if c == '&' as i32 as libc::c_uint {
+                let fresh12 = dst;
+                dst = dst.offset(1);
+                *fresh12 = '-' as i32 as libc::c_char
+            }
+        } else {
+            if 0 == utf7mode {
+                let fresh13 = dst;
+                dst = dst.offset(1);
+                *fresh13 = '&' as i32 as libc::c_char;
+                utf7mode = 1i32 as libc::c_uint
+            }
+            // encode ascii characters as themselves
+            if c < 0x80i32 as libc::c_uint {
+                ucs4 = c as libc::c_ulong
+            } else if 0 != utf8total {
+                ucs4 = ucs4 << 6i32 | c as libc::c_ulong & 0x3f;
+                utf8pos = utf8pos.wrapping_add(1);
+                if utf8pos < utf8total {
+                    continue;
+                }
+            } else {
+                utf8pos = 1i32 as libc::c_uint;
+                if c < 0xe0i32 as libc::c_uint {
+                    utf8total = 2i32 as libc::c_uint;
+                    ucs4 = (c & 0x1fi32 as libc::c_uint) as libc::c_ulong
+                } else if c < 0xf0i32 as libc::c_uint {
+                    utf8total = 3i32 as libc::c_uint;
+                    ucs4 = (c & 0xfi32 as libc::c_uint) as libc::c_ulong
                } else {
-                    return decoded.decode_utf8_lossy();
+                    utf8total = 4i32 as libc::c_uint;
+                    ucs4 = (c & 0x3i32 as libc::c_uint) as libc::c_ulong
+                }
+                continue;
+            }
+            utf8total = 0i32 as libc::c_uint;
+            loop {
+                if ucs4 >= 0x10000 {
+                    ucs4 = ucs4.wrapping_sub(0x10000);
+                    bitbuf = bitbuf << 16 | (ucs4 >> 10).wrapping_add(0xd800);
+                    ucs4 = (ucs4 & 0x3ff).wrapping_add(0xdc00);
+                    utf16flag = 1i32 as libc::c_uint
+                } else {
+                    bitbuf = bitbuf << 16 | ucs4;
+                    utf16flag = 0i32 as libc::c_uint
+                }
+                bitstogo = bitstogo.wrapping_add(16i32 as libc::c_uint);
+                while bitstogo >= 6i32 as libc::c_uint {
+                    bitstogo = bitstogo.wrapping_sub(6i32 as libc::c_uint);
+                    let fresh14 = dst;
+                    dst = dst.offset(1);
+                    *fresh14 = BASE64CHARS[(if 0 != bitstogo {
+                        bitbuf >> bitstogo
+                    } else {
+                        bitbuf
+                    } & 0x3f) as usize]
+                }
+                if !(0 != utf16flag) {
+                    break;
                }
            }
        }
    }
+    if 0 != utf7mode {
+        if 0 != bitstogo {
+            let fresh15 = dst;
+            dst = dst.offset(1);
+            *fresh15 = BASE64CHARS
+                [(bitbuf << (6i32 as libc::c_uint).wrapping_sub(bitstogo) & 0x3f) as usize]
+        }
+        let fresh16 = dst;
+        dst = dst.offset(1);
+        *fresh16 = '-' as i32 as libc::c_char
+    }
+    *dst = '\u{0}' as i32 as libc::c_char;

-    String::from_utf8_lossy(to_decode)
+    res
+}
+
+/* ******************************************************************************
+ * Encode/decode modified UTF-7 as needed for IMAP, see RFC 2192
+ ******************************************************************************/
+
+// UTF7 modified base64 alphabet
+#[cfg(test)]
+static mut BASE64CHARS: [libc::c_char; 65] = [
+    65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88,
+    89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114,
+    115, 116, 117, 118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 43, 44, 0,
+];
+
+#[cfg(test)]
+unsafe fn dc_decode_modified_utf7(
+    to_decode: *const libc::c_char,
+    change_spaces: libc::c_int,
+) -> *mut libc::c_char {
+    let mut c: libc::c_uint;
+    let mut i: libc::c_uint;
+    let mut bitcount: libc::c_uint;
+    let mut ucs4: libc::c_ulong;
+    let mut utf16: libc::c_ulong;
+    let mut bitbuf: libc::c_ulong;
+    let mut base64: [libc::c_uchar; 256] = [0; 256];
+    let mut src: *const libc::c_char;
+    let mut dst: *mut libc::c_char;
+    let res: *mut libc::c_char;
+    if to_decode.is_null() {
+        return dc_strdup(b"\x00" as *const u8 as *const libc::c_char);
+    }
+    res = malloc(4usize.wrapping_mul(strlen(to_decode)).wrapping_add(1)) as *mut libc::c_char;
+    dst = res;
+    src = to_decode;
+    assert!(!dst.is_null());
+
+    libc::memset(
+        base64.as_mut_ptr() as *mut libc::c_void,
+        64,
+        ::std::mem::size_of::<[libc::c_uchar; 256]>(),
+    );
+    i = 0i32 as libc::c_uint;
+    while (i as libc::c_ulong) < ::std::mem::size_of::<[libc::c_char; 65]>() as libc::c_ulong {
+        base64[BASE64CHARS[i as usize] as libc::c_uint as usize] = i as libc::c_uchar;
+        i = i.wrapping_add(1)
+    }
+    while *src as libc::c_int != '\u{0}' as i32 {
+        let fresh17 = src;
+        src = src.offset(1);
+        c = *fresh17 as libc::c_uint;
+        if c != '&' as i32 as libc::c_uint || *src as libc::c_int == '-' as i32 {
+            if 0 != change_spaces && c == '_' as i32 as libc::c_uint {
+                let fresh18 = dst;
+                dst = dst.offset(1);
+                *fresh18 = ' ' as i32 as libc::c_char
+            } else {
+                let fresh19 = dst;
+                dst = dst.offset(1);
+                *fresh19 = c as libc::c_char
+            }
+            if c == '&' as i32 as libc::c_uint {
+                src = src.offset(1isize)
+            }
+        } else {
+            bitbuf = 0;
+            bitcount = 0i32 as libc::c_uint;
+            ucs4 = 0;
+            loop {
+                c = base64[*src as libc::c_uchar as usize] as libc::c_uint;
+                if !(c != 64i32 as libc::c_uint) {
+                    break;
+                }
+                src = src.offset(1isize);
+                bitbuf = bitbuf << 6i32 | c as libc::c_ulong;
+                bitcount = bitcount.wrapping_add(6i32 as libc::c_uint);
+                // enough bits for a UTF-16 character?
+                if !(bitcount >= 16i32 as libc::c_uint) {
+                    continue;
+                }
+                bitcount = bitcount.wrapping_sub(16i32 as libc::c_uint);
+                utf16 = if 0 != bitcount {
+                    bitbuf >> bitcount
+                } else {
+                    bitbuf
+                } & 0xffff;
+
+                // convert UTF16 to UCS4
+                if utf16 >= 0xd800 && utf16 <= 0xdbff {
+                    ucs4 = utf16.wrapping_sub(0xd800) << 10i32
+                } else {
+                    if utf16 >= 0xdc00 && utf16 <= 0xdfff {
+                        ucs4 = ucs4.wrapping_add(utf16.wrapping_sub(0xdc00).wrapping_add(0x10000))
+                    } else {
+                        ucs4 = utf16
+                    }
+                    if ucs4 <= 0x7f {
+                        *dst.offset(0isize) = ucs4 as libc::c_char;
+                        dst = dst.offset(1isize)
+                    } else if ucs4 <= 0x7ff {
+                        *dst.offset(0isize) = (0xc0 | ucs4 >> 6i32) as libc::c_char;
+                        *dst.offset(1isize) = (0x80 | ucs4 & 0x3f) as libc::c_char;
+                        dst = dst.offset(2isize)
+                    } else if ucs4 <= 0xffff {
+                        *dst.offset(0isize) = (0xe0 | ucs4 >> 12i32) as libc::c_char;
+                        *dst.offset(1isize) = (0x80 | ucs4 >> 6i32 & 0x3f) as libc::c_char;
+                        *dst.offset(2isize) = (0x80 | ucs4 & 0x3f) as libc::c_char;
+                        dst = dst.offset(3isize)
+                    } else {
+                        *dst.offset(0isize) = (0xf0 | ucs4 >> 18i32) as libc::c_char;
+                        *dst.offset(1isize) = (0x80 | ucs4 >> 12i32 & 0x3f) as libc::c_char;
+                        *dst.offset(2isize) = (0x80 | ucs4 >> 6i32 & 0x3f) as libc::c_char;
+                        *dst.offset(3isize) = (0x80 | ucs4 & 0x3f) as libc::c_char;
+                        dst = dst.offset(4isize)
+                    }
+                }
+            }
+            if *src as libc::c_int == '-' as i32 {
+                src = src.offset(1isize)
+            }
+        }
+    }
+    *dst = '\u{0}' as i32 as libc::c_char;
+
+    res
+}
+
+pub unsafe fn dc_needs_ext_header(mut to_check: *const libc::c_char) -> bool {
+    if !to_check.is_null() {
+        while 0 != *to_check {
+            if 0 == isalnum(*to_check as libc::c_int)
+                && *to_check as libc::c_int != '-' as i32
+                && *to_check as libc::c_int != '_' as i32
+                && *to_check as libc::c_int != '.' as i32
+                && *to_check as libc::c_int != '~' as i32
+            {
+                return true;
+            }
+            to_check = to_check.offset(1isize)
+        }
+    }
+
+    false
+}
+
+pub unsafe fn dc_encode_ext_header(to_encode: *const libc::c_char) -> *mut libc::c_char {
+    let mut pstr: *const libc::c_char = to_encode;
+    if to_encode.is_null() {
+        return dc_strdup(b"utf-8\'\'\x00" as *const u8 as *const libc::c_char);
+    }
+    let buf: *mut libc::c_char = malloc(
+        strlen(b"utf-8\'\'\x00" as *const u8 as *const libc::c_char)
+            .wrapping_add(strlen(to_encode).wrapping_mul(3))
+            .wrapping_add(1),
+    ) as *mut libc::c_char;
+    assert!(!buf.is_null());
+
+    let mut pbuf: *mut libc::c_char = buf;
+    strcpy(pbuf, b"utf-8\'\'\x00" as *const u8 as *const libc::c_char);
+    pbuf = pbuf.offset(strlen(pbuf) as isize);
+    while 0 != *pstr {
+        if 0 != isalnum(*pstr as libc::c_int)
+            || *pstr as libc::c_int == '-' as i32
+            || *pstr as libc::c_int == '_' as i32
+            || *pstr as libc::c_int == '.' as i32
+            || *pstr as libc::c_int == '~' as i32
+        {
+            let fresh20 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh20 = *pstr
+        } else {
+            let fresh21 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh21 = '%' as i32 as libc::c_char;
+            let fresh22 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh22 = int_2_uppercase_hex((*pstr as libc::c_int >> 4i32) as libc::c_char);
+            let fresh23 = pbuf;
+            pbuf = pbuf.offset(1);
+            *fresh23 = int_2_uppercase_hex((*pstr as libc::c_int & 15i32) as libc::c_char)
+        }
+        pstr = pstr.offset(1isize)
+    }
+    *pbuf = '\u{0}' as i32 as libc::c_char;
+
+    buf
+}
+
+pub unsafe fn dc_decode_ext_header(to_decode: *const libc::c_char) -> *mut libc::c_char {
+    let mut decoded: *mut libc::c_char = ptr::null_mut();
+    let mut charset: *mut libc::c_char = ptr::null_mut();
+    let mut p2: *const libc::c_char;
+    if !to_decode.is_null() {
+        // get char set
+        p2 = strchr(to_decode, '\'' as i32);
+        if !(p2.is_null() || p2 == to_decode) {
+            /*no empty charset allowed*/
+            charset =
+                dc_null_terminate(to_decode, p2.wrapping_offset_from(to_decode) as libc::c_int);
+            p2 = p2.offset(1isize);
+            // skip language
+            p2 = strchr(p2, '\'' as i32);
+            if !p2.is_null() {
+                p2 = p2.offset(1isize);
+                decoded = dc_urldecode(p2);
+                if !charset.is_null()
+                    && strcmp(charset, b"utf-8\x00" as *const u8 as *const libc::c_char) != 0i32
+                    && strcmp(charset, b"UTF-8\x00" as *const u8 as *const libc::c_char) != 0i32
+                {
+                    if let Some(encoding) =
+                        Charset::for_label(CStr::from_ptr(charset).to_str().unwrap().as_bytes())
+                    {
+                        let data =
+                            std::slice::from_raw_parts(decoded as *const u8, strlen(decoded));
+
+                        let (res, _, _) = encoding.decode(data);
+                        free(decoded as *mut _);
+                        let r = std::ffi::CString::new(res.as_bytes()).unwrap();
+                        decoded = dc_strdup(r.as_ptr());
+                    }
+                }
+            }
+        }
+    }
+    free(charset as *mut libc::c_void);
+    if !decoded.is_null() {
+        decoded
+    } else {
+        dc_strdup(to_decode)
+    }
 }

 unsafe fn print_hex(target: *mut libc::c_char, cur: *const libc::c_char) {
@@ -334,8 +672,16 @@ unsafe fn print_hex(target: *mut libc::c_char, cur: *const libc::c_char) {
 #[cfg(test)]
 mod tests {
    use super::*;
+    use percent_encoding::{percent_encode, NON_ALPHANUMERIC};
    use std::ffi::CStr;

+    #[test]
+    fn test_isalnum() {
+        assert_eq!(isalnum(0), 0);
+        assert_eq!(isalnum('5' as libc::c_int), 1);
+        assert_eq!(isalnum('Q' as libc::c_int), 1);
+    }
+
    #[test]
    fn test_dc_decode_header_words() {
        unsafe {
@@ -396,43 +742,99 @@ mod tests {

    #[test]
    fn test_dc_encode_ext_header() {
-        let buf1 = dc_encode_ext_header("Björn Petersen");
-        assert_eq!(&buf1, "utf-8\'\'Bj%C3%B6rn%20Petersen");
-        let buf2 = dc_decode_ext_header(buf1.as_bytes());
-        assert_eq!(&buf2, "Björn Petersen",);
+        unsafe {
+            let mut buf1 = dc_encode_ext_header(
+                b"Bj\xc3\xb6rn Petersen\x00" as *const u8 as *const libc::c_char,
+            );
+            assert_eq!(
+                CStr::from_ptr(buf1).to_str().unwrap(),
+                "utf-8\'\'Bj%C3%B6rn%20Petersen"
+            );
+            let buf2 = dc_decode_ext_header(buf1);
+            assert_eq!(
+                strcmp(
+                    buf2,
+                    b"Bj\xc3\xb6rn Petersen\x00" as *const u8 as *const libc::c_char,
+                ),
+                0
+            );
+            free(buf1 as *mut libc::c_void);
+            free(buf2 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"iso-8859-1\'en\'%A3%20rates");
-        assert_eq!(buf1, "£ rates",);
+            buf1 = dc_decode_ext_header(
+                b"iso-8859-1\'en\'%A3%20rates\x00" as *const u8 as *const libc::c_char,
+            );
+            assert_eq!(
+                strcmp(
+                    buf1,
+                    b"\xc2\xa3 rates\x00" as *const u8 as *const libc::c_char,
+                ),
+                0
+            );
+            free(buf1 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"wrong\'format");
-        assert_eq!(buf1, "wrong\'format",);
+            buf1 = dc_decode_ext_header(b"wrong\'format\x00" as *const u8 as *const libc::c_char);
+            assert_eq!(
+                strcmp(
+                    buf1,
+                    b"wrong\'format\x00" as *const u8 as *const libc::c_char,
+                ),
+                0
+            );
+            free(buf1 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"\'\'");
-        assert_eq!(buf1, "\'\'");
+            buf1 = dc_decode_ext_header(b"\'\'\x00" as *const u8 as *const libc::c_char);
+            assert_eq!(
+                strcmp(buf1, b"\'\'\x00" as *const u8 as *const libc::c_char),
+                0
+            );
+            free(buf1 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"x\'\'");
-        assert_eq!(buf1, "");
+            buf1 = dc_decode_ext_header(b"x\'\'\x00" as *const u8 as *const libc::c_char);
+            assert_eq!(strcmp(buf1, b"\x00" as *const u8 as *const libc::c_char), 0);
+            free(buf1 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"\'");
-        assert_eq!(buf1, "\'");
+            buf1 = dc_decode_ext_header(b"\'\x00" as *const u8 as *const libc::c_char);
+            assert_eq!(
+                strcmp(buf1, b"\'\x00" as *const u8 as *const libc::c_char),
+                0
+            );
+            free(buf1 as *mut libc::c_void);

-        let buf1 = dc_decode_ext_header(b"");
-        assert_eq!(buf1, "");
-
-        // regressions
-        assert_eq!(
-            dc_decode_ext_header(dc_encode_ext_header("%0A").as_bytes()),
-            "%0A"
-        );
+            buf1 = dc_decode_ext_header(b"\x00" as *const u8 as *const libc::c_char);
+            assert_eq!(strcmp(buf1, b"\x00" as *const u8 as *const libc::c_char), 0);
+            free(buf1 as *mut libc::c_void);
+        }
    }

    #[test]
    fn test_dc_needs_ext_header() {
-        assert_eq!(dc_needs_ext_header("Björn"), true);
-        assert_eq!(dc_needs_ext_header("Bjoern"), false);
-        assert_eq!(dc_needs_ext_header(""), false);
-        assert_eq!(dc_needs_ext_header(" "), true);
-        assert_eq!(dc_needs_ext_header("a b"), true);
+        unsafe {
+            assert_eq!(
+                dc_needs_ext_header(b"Bj\xc3\xb6rn\x00" as *const u8 as *const libc::c_char),
+                true
+            );
+            assert_eq!(
+                dc_needs_ext_header(b"Bjoern\x00" as *const u8 as *const libc::c_char),
+                false
+            );
+            assert_eq!(
+                dc_needs_ext_header(b"\x00" as *const u8 as *const libc::c_char),
+                false
+            );
+            assert_eq!(
+                dc_needs_ext_header(b" \x00" as *const u8 as *const libc::c_char),
+                true
+            );
+            assert_eq!(
+                dc_needs_ext_header(b"a b\x00" as *const u8 as *const libc::c_char),
+                true
+            );
+            assert_eq!(
+                dc_needs_ext_header(0 as *const u8 as *const libc::c_char),
+                false
+            );
+        }
    }

    #[test]
@@ -447,20 +849,69 @@ mod tests {
        assert_eq!(to_string(hex.as_ptr() as *const _), "=3A");
    }

-    use proptest::prelude::*;
+    #[test]
+    fn test_dc_urlencode_urldecode() {
+        unsafe {
+            let buf1 = percent_encode(b"Bj\xc3\xb6rn Petersen", NON_ALPHANUMERIC)
+                .to_string()
+                .strdup();

-    proptest! {
-        #[test]
-        fn test_ext_header_roundtrip(buf: String) {
-            let encoded = dc_encode_ext_header(&buf);
-            let decoded = dc_decode_ext_header(encoded.as_bytes());
-            assert_eq!(buf, decoded);
-        }
+            assert_eq!(
+                CStr::from_ptr(buf1 as *const libc::c_char)
+                    .to_str()
+                    .unwrap(),
+                "Bj%C3%B6rn%20Petersen"
+            );

-        #[test]
-        fn test_ext_header_decode_anything(buf: Vec<u8>) {
-            // make sure this never panics
-            let _decoded = dc_decode_ext_header(&buf);
+            let buf2 = dc_urldecode(buf1);
+
+            assert_eq!(
+                strcmp(
+                    buf2,
+                    b"Bj\xc3\xb6rn Petersen\x00" as *const u8 as *const libc::c_char
+                ),
+                0
+            );
+
+            free(buf1 as *mut libc::c_void);
+            free(buf2 as *mut libc::c_void);
        }
    }
+
+    #[test]
+    fn test_dc_encode_decode_modified_utf7() {
+        unsafe {
+            let buf1 = dc_encode_modified_utf7(
+                b"Bj\xc3\xb6rn Petersen\x00" as *const u8 as *const libc::c_char,
+                1,
+            );
+
+            assert_eq!(
+                CStr::from_ptr(buf1 as *const libc::c_char)
+                    .to_str()
+                    .unwrap(),
+                "Bj&APY-rn_Petersen"
+            );
+
+            let buf2 = dc_decode_modified_utf7(buf1, 1);
+
+            assert_eq!(
+                strcmp(
+                    buf2,
+                    b"Bj\xc3\xb6rn Petersen\x00" as *const u8 as *const libc::c_char
+                ),
+                0
+            );
+
+            free(buf1 as *mut libc::c_void);
+            free(buf2 as *mut libc::c_void);
+        }
+    }
+    #[test]
+    fn test_hex_to_int() {
+        assert_eq!(hex_2_int(b'A' as libc::c_char), 10);
+        assert_eq!(hex_2_int(b'a' as libc::c_char), 10);
+        assert_eq!(hex_2_int(b'4' as libc::c_char), 4);
+        assert_eq!(hex_2_int(b'K' as libc::c_char), 20);
+    }
 }
--- a/src/dc_token.rs
+++ b/src/dc_token.rs
@@ -0,0 +1,50 @@
+use crate::context::Context;
+use crate::dc_tools::*;
+use crate::sql;
+
+// Token namespaces
+#[allow(non_camel_case_types)]
+type dc_tokennamespc_t = usize;
+pub const DC_TOKEN_AUTH: dc_tokennamespc_t = 110;
+pub const DC_TOKEN_INVITENUMBER: dc_tokennamespc_t = 100;
+
+// Functions to read/write token from/to the database. A token is any string associated with a key.
+
+pub fn dc_token_save(
+    context: &Context,
+    namespc: dc_tokennamespc_t,
+    foreign_id: u32,
+    token: &str,
+) -> bool {
+    // foreign_id may be 0
+    sql::execute(
+        context,
+        &context.sql,
+        "INSERT INTO tokens (namespc, foreign_id, token, timestamp) VALUES (?, ?, ?, ?);",
+        params![namespc as i32, foreign_id as i32, token, time()],
+    )
+    .is_ok()
+}
+
+pub fn dc_token_lookup(
+    context: &Context,
+    namespc: dc_tokennamespc_t,
+    foreign_id: u32,
+) -> Option<String> {
+    context.sql.query_row_col::<_, String>(
+        context,
+        "SELECT token FROM tokens WHERE namespc=? AND foreign_id=?;",
+        params![namespc as i32, foreign_id as i32],
+        0,
+    )
+}
+
+pub fn dc_token_exists(context: &Context, namespc: dc_tokennamespc_t, token: &str) -> bool {
+    context
+        .sql
+        .exists(
+            "SELECT id FROM tokens WHERE namespc=? AND token=?;",
+            params![namespc as i32, token],
+        )
+        .unwrap_or_default()
+}
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -83,6 +83,14 @@ pub unsafe fn dc_atoi_null_is_0(s: *const libc::c_char) -> libc::c_int {
    }
 }

+pub fn dc_atof(s: *const libc::c_char) -> libc::c_double {
+    if s.is_null() {
+        return 0.;
+    }
+
+    as_str(s).parse().unwrap_or_default()
+}
+
 pub unsafe fn dc_str_replace(
    haystack: *mut *mut libc::c_char,
    needle: *const libc::c_char,
@@ -97,6 +105,21 @@ pub unsafe fn dc_str_replace(
    *haystack = haystack_s.replace(&needle_s, &replacement_s).strdup();
 }

+pub unsafe fn dc_ftoa(f: libc::c_double) -> *mut libc::c_char {
+    // hack around printf(%f) that may return `,` as decimal point on mac
+    let test: *mut libc::c_char = dc_mprintf(b"%f\x00" as *const u8 as *const libc::c_char, 1.2f64);
+    *test.offset(2isize) = 0 as libc::c_char;
+    let mut str: *mut libc::c_char = dc_mprintf(b"%f\x00" as *const u8 as *const libc::c_char, f);
+    dc_str_replace(
+        &mut str,
+        test.offset(1isize),
+        b".\x00" as *const u8 as *const libc::c_char,
+    );
+    free(test as *mut libc::c_void);
+
+    str
+}
+
 unsafe fn dc_ltrim(buf: *mut libc::c_char) {
    let mut len: size_t;
    let mut cur: *const libc::c_uchar;
@@ -261,18 +284,11 @@ pub unsafe fn dc_replace_bad_utf8_chars(buf: *mut libc::c_char) {
 pub fn dc_truncate(buf: &str, approx_chars: usize, do_unwrap: bool) -> Cow<str> {
    let ellipse = if do_unwrap { "..." } else { "[...]" };

-    let count = buf.chars().count();
-    if approx_chars > 0 && count > approx_chars + ellipse.len() {
-        let end_pos = buf
-            .char_indices()
-            .nth(approx_chars)
-            .map(|(n, _)| n)
-            .unwrap_or_default();
-
-        if let Some(index) = buf[..end_pos].rfind(|c| c == ' ' || c == '\n') {
+    if approx_chars > 0 && buf.len() > approx_chars + ellipse.len() {
+        if let Some(index) = buf[..approx_chars].rfind(|c| c == ' ' || c == '\n') {
            Cow::Owned(format!("{}{}", &buf[..index + 1], ellipse))
        } else {
-            Cow::Owned(format!("{}{}", &buf[..end_pos], ellipse))
+            Cow::Owned(format!("{}{}", &buf[..approx_chars], ellipse))
        }
    } else {
        Cow::Borrowed(buf)
@@ -442,10 +458,21 @@ pub unsafe fn clist_free_content(haystack: *const clist) {
 pub unsafe fn clist_search_string_nocase(
    haystack: *const clist,
    needle: *const libc::c_char,
-) -> bool {
-    (&*haystack)
-        .into_iter()
-        .any(|data| strcasecmp(data.cast(), needle) == 0)
+) -> libc::c_int {
+    let mut iter = (*haystack).first;
+
+    while !iter.is_null() {
+        if strcasecmp((*iter).data as *const libc::c_char, needle) == 0 {
+            return 1;
+        }
+        iter = if !iter.is_null() {
+            (*iter).next
+        } else {
+            ptr::null_mut()
+        }
+    }
+
+    0
 }

 /* date/time tools */
@@ -490,7 +517,7 @@ pub fn dc_gm2local_offset() -> i64 {
 }

 /* timesmearing */
-pub fn dc_smeared_time(context: &Context) -> i64 {
+pub unsafe fn dc_smeared_time(context: &Context) -> i64 {
    /* function returns a corrected time(NULL) */
    let mut now = time();
    let ts = *context.last_smeared_timestamp.clone().read().unwrap();
@@ -626,21 +653,6 @@ pub unsafe fn dc_create_outgoing_rfc724_mid(
    ret
 }

-/// Generate globally-unique message-id for a new outgoing message.
-///
-/// Note: Do not add a counter or any private data as as this may give
-/// unneeded information to the receiver
-pub fn dc_create_outgoing_rfc724_mid_safe(grpid: Option<&str>, from_addr: &str) -> String {
-    let hostname = from_addr
-        .find('@')
-        .map(|k| &from_addr[k..])
-        .unwrap_or("@nohost");
-    match grpid {
-        Some(grpid) => format!("Gr.{}.{}{}", grpid, dc_create_id(), hostname),
-        None => format!("Mr.{}.{}{}", dc_create_id(), dc_create_id(), hostname),
-    }
-}
-
 /// Extract the group id (grpid) from a message id (mid)
 ///
 /// # Arguments
@@ -843,19 +855,16 @@ pub fn dc_get_filebytes(context: &Context, path: impl AsRef<std::path::Path>) ->

 pub fn dc_delete_file(context: &Context, path: impl AsRef<std::path::Path>) -> bool {
    let path_abs = dc_get_abs_path_safe(context, &path);
-    if !path_abs.is_file() {
-        warn!(
-            context,
-            "Will not delete directory \"{}\".",
-            path.as_ref().display()
-        );
-        return false;
-    }
+    let res = if path_abs.is_file() {
+        fs::remove_file(path_abs)
+    } else {
+        fs::remove_dir_all(path_abs)
+    };

-    match fs::remove_file(path_abs) {
+    match res {
        Ok(_) => true,
        Err(_err) => {
-            warn!(context, "Cannot delete \"{}\".", path.as_ref().display());
+            warn!(context, 0, "Cannot delete \"{}\".", path.as_ref().display());
            false
        }
    }
@@ -873,6 +882,7 @@ pub fn dc_copy_file(
        Err(_) => {
            error!(
                context,
+                0,
                "Cannot copy \"{}\" to \"{}\".",
                src.as_ref().display(),
                dest.as_ref().display(),
@@ -890,6 +900,7 @@ pub fn dc_create_folder(context: &Context, path: impl AsRef<std::path::Path>) ->
            Err(_err) => {
                warn!(
                    context,
+                    0,
                    "Cannot create directory \"{}\".",
                    path.as_ref().display(),
                );
@@ -922,6 +933,7 @@ pub fn dc_write_file_safe<P: AsRef<std::path::Path>>(
    if let Err(_err) = fs::write(&path_abs, buf) {
        warn!(
            context,
+            0,
            "Cannot write {} bytes to \"{}\".",
            buf.len(),
            path.as_ref().display(),
@@ -959,6 +971,7 @@ pub fn dc_read_file_safe<P: AsRef<std::path::Path>>(context: &Context, path: P)
        Err(_err) => {
            warn!(
                context,
+                0,
                "Cannot read \"{}\" or file is empty.",
                path.as_ref().display()
            );
@@ -1370,32 +1383,6 @@ impl FromStr for EmailAddress {
    }
 }

-/// Utility to check if a in the binary represantion of listflags
-/// the bit at position bitindex is 1.
-///
-///
-/// # Example
-///
-/// ```
-/// use std::convert::TryInto;
-/// use deltachat::dc_tools::listflags_has;
-/// use deltachat::constants::{DC_GCL_ADD_SELF, DC_GCL_VERIFIED_ONLY};
-/// let listflags: u32 = 0x1101;
-/// assert!(listflags_has(listflags, 0x1) == true);
-/// assert!(listflags_has(listflags, 0x10) == false);
-/// assert!(listflags_has(listflags, 0x100) == true);
-/// assert!(listflags_has(listflags, 0x1000) == true);
-/// let listflags: u32 = (DC_GCL_ADD_SELF | DC_GCL_VERIFIED_ONLY).try_into().unwrap();
-/// assert!(listflags_has(listflags, DC_GCL_VERIFIED_ONLY) == true);
-/// assert!(listflags_has(listflags, DC_GCL_ADD_SELF) == true);
-/// let listflags: u32 = DC_GCL_VERIFIED_ONLY.try_into().unwrap();
-/// assert!(listflags_has(listflags, DC_GCL_ADD_SELF) == false);
-/// ```
-pub fn listflags_has(listflags: u32, bitindex: usize) -> bool {
-    let listflags = listflags as usize;
-    (listflags & bitindex) == bitindex
-}
-
 #[cfg(test)]
 mod tests {
    use super::*;
@@ -1492,6 +1479,23 @@ mod tests {
        }
    }

+    #[test]
+    fn test_dc_atof() {
+        let f: libc::c_double = dc_atof(b"1.23\x00" as *const u8 as *const libc::c_char);
+        assert!(f > 1.22f64);
+        assert!(f < 1.24f64);
+    }
+
+    #[test]
+    fn test_dc_ftoa() {
+        unsafe {
+            let s: *mut libc::c_char = dc_ftoa(1.23f64);
+            assert!(dc_atof(s) > 1.22f64);
+            assert!(dc_atof(s) < 1.24f64);
+            free(s as *mut libc::c_void);
+        }
+    }
+
    #[test]
    fn test_rust_ftoa() {
        assert_eq!("1.22", format!("{}", 1.22));
@@ -1539,36 +1543,6 @@ mod tests {
        assert_eq!(dc_truncate("123456", 4, true), "123456");
    }

-    #[test]
-    fn test_dc_truncate_edge() {
-        assert_eq!(dc_truncate("", 4, false), "");
-        assert_eq!(dc_truncate("", 4, true), "");
-
-        assert_eq!(dc_truncate("\n  hello \n world", 4, false), "\n  [...]");
-        assert_eq!(dc_truncate("\n  hello \n world", 4, true), "\n  ...");
-
-        assert_eq!(
-            dc_truncate("𐠈0Aᝮa𫝀®!ꫛa¡0A𐢧00𐹠®A  丽ⷐએ", 1, false),
-            "𐠈[...]"
-        );
-        assert_eq!(
-            dc_truncate("𐠈0Aᝮa𫝀®!ꫛa¡0A𐢧00𐹠®A  丽ⷐએ", 0, false),
-            "𐠈0Aᝮa𫝀®!ꫛa¡0A𐢧00𐹠®A  丽ⷐએ"
-        );
-
-        // 9 characters, so no truncation
-        assert_eq!(
-            dc_truncate("𑒀ὐ￠🜀\u{1e01b}A a🟠", 6, false),
-            "𑒀ὐ￠🜀\u{1e01b}A a🟠",
-        );
-
-        // 12 characters, truncation
-        assert_eq!(
-            dc_truncate("𑒀ὐ￠🜀\u{1e01b}A a🟠bcd", 6, false),
-            "𑒀ὐ￠🜀\u{1e01b}A[...]",
-        );
-    }
-
    #[test]
    fn test_dc_null_terminate_1() {
        unsafe {
@@ -1906,37 +1880,4 @@ mod tests {
        assert_eq!(EmailAddress::new("u@.tt").is_ok(), false);
        assert_eq!(EmailAddress::new("@d.tt").is_ok(), false);
    }
-
-    use proptest::prelude::*;
-
-    proptest! {
-        #[test]
-        fn test_dc_truncate(
-            buf: String,
-            approx_chars in 0..10000usize,
-            do_unwrap: bool,
-        ) {
-            let res = dc_truncate(&buf, approx_chars, do_unwrap);
-            let el_len = if do_unwrap { 3 } else { 5 };
-            let l = res.chars().count();
-            if approx_chars > 0 {
-                assert!(
-                    l <= approx_chars + el_len,
-                    "buf: '{}' - res: '{}' - len {}, approx {}",
-                    &buf, &res, res.len(), approx_chars
-                );
-            } else {
-                assert_eq!(&res, &buf);
-            }
-
-            if approx_chars > 0 && buf.chars().count() > approx_chars + el_len {
-                let l = res.len();
-                if do_unwrap {
-                    assert_eq!(&res[l-3..l], "...", "missing ellipsis in {}", &res);
-                } else {
-                    assert_eq!(&res[l-5..l], "[...]", "missing ellipsis in {}", &res);
-                }
-            }
-        }
-    }
 }
--- a/src/e2ee.rs
+++ b/src/e2ee.rs
@@ -23,13 +23,13 @@ use crate::aheader::*;
 use crate::config::Config;
 use crate::context::Context;
 use crate::dc_mimeparser::*;
+use crate::dc_securejoin::*;
 use crate::dc_tools::*;
 use crate::error::*;
 use crate::key::*;
 use crate::keyring::*;
 use crate::peerstate::*;
 use crate::pgp::*;
-use crate::securejoin::handle_degrade_event;
 use crate::types::*;
 use crate::x::*;

@@ -91,7 +91,7 @@ impl E2eeHelper {

            if let Some(addr) = addr {
                let pubkey_ret = load_or_generate_self_public_key(context, &addr).map_err(|err| {
-                    error!(context, "Failed to load public key: {}", err);
+                    error!(context, 0, "Failed to load public key: {}", err);
                    err
                });
                if let Ok(public_key) = pubkey_ret {
@@ -113,7 +113,7 @@ impl E2eeHelper {
                                    let peerstate = peerstate.unwrap();
                                    info!(
                                        context,
-                                        "dc_e2ee_encrypt {} has peerstate", recipient_addr
+                                        0, "dc_e2ee_encrypt {} has peerstate", recipient_addr
                                    );
                                    if let Some(key) = peerstate.peek_key(min_verified as usize) {
                                        keyring.add_owned(key.clone());
@@ -122,6 +122,7 @@ impl E2eeHelper {
                                } else {
                                    info!(
                                        context,
+                                        0,
                                        "dc_e2ee_encrypt {} HAS NO peerstate {}",
                                        recipient_addr,
                                        peerstate.is_some()
@@ -298,10 +299,8 @@ impl E2eeHelper {
                                ok_to_continue = false;
                            } else {
                                if let Some(ctext_v) = dc_pgp_pk_encrypt(
-                                    std::slice::from_raw_parts(
-                                        (*plain).str_0 as *const u8,
-                                        (*plain).len,
-                                    ),
+                                    (*plain).str_0 as *const libc::c_void,
+                                    (*plain).len,
                                    &keyring,
                                    sign_key.as_ref(),
                                ) {
@@ -441,7 +440,7 @@ impl E2eeHelper {
                    }
                    if let Some(ref peerstate) = peerstate {
                        if peerstate.degrade_event.is_some() {
-                            handle_degrade_event(context, &peerstate);
+                            dc_handle_degrade_event(context, &peerstate);
                        }
                        if let Some(ref key) = peerstate.gossip_key {
                            public_keyring_for_validate.add_ref(key);
@@ -607,7 +606,7 @@ fn load_or_generate_self_public_key(context: &Context, self_addr: impl AsRef<str
    let start = std::time::Instant::now();
    info!(
        context,
-        "Generating keypair with {} bits, e={} ...", 2048, 65537,
+        0, "Generating keypair with {} bits, e={} ...", 2048, 65537,
    );
    match dc_pgp_create_keypair(&self_addr) {
        Some((public_key, private_key)) => {
@@ -622,6 +621,7 @@ fn load_or_generate_self_public_key(context: &Context, self_addr: impl AsRef<str
                true => {
                    info!(
                        context,
+                        0,
                        "Keypair generated in {:.3}s.",
                        start.elapsed().as_secs()
                    );
@@ -681,7 +681,7 @@ unsafe fn update_gossip_peerstates(
                        }
                        if let Some(peerstate) = peerstate {
                            if peerstate.degrade_event.is_some() {
-                                handle_degrade_event(context, &peerstate);
+                                dc_handle_degrade_event(context, &peerstate);
                            }
                        }

@@ -689,6 +689,7 @@ unsafe fn update_gossip_peerstates(
                    } else {
                        info!(
                            context,
+                            0,
                            "Ignoring gossipped \"{}\" as the address is not in To/Cc list.",
                            &header.addr,
                        );
@@ -906,7 +907,8 @@ unsafe fn decrypt_part(

                /*if we already have fingerprints, do not add more; this ensures, only the fingerprints from the outer-most part are collected */
                if let Some(plain) = dc_pgp_pk_decrypt(
-                    std::slice::from_raw_parts(decoded_data as *const u8, decoded_data_bytes),
+                    decoded_data as *const libc::c_void,
+                    decoded_data_bytes,
                    &private_keyring,
                    &public_keyring_for_validate,
                    add_signatures,
@@ -1025,7 +1027,7 @@ unsafe fn contains_report(mime: *mut mailmime) -> bool {
 /// [Config::ConfiguredAddr] is configured, this address is returned.
 pub fn ensure_secret_key_exists(context: &Context) -> Result<String> {
    let self_addr = context
-        .get_config(&Config::ConfiguredAddr)
+        .get_config(Config::ConfiguredAddr)
        .ok_or(format_err!(concat!(
            "Failed to get self address, ",
            "cannot ensure secret key if not configured."
--- a/src/imap.rs
+++ b/src/imap.rs
@@ -8,8 +8,8 @@ use std::time::{Duration, SystemTime};

 use crate::constants::*;
 use crate::context::Context;
+use crate::dc_loginparam::*;
 use crate::dc_tools::CStringExt;
-use crate::login_param::LoginParam;
 use crate::oauth2::dc_get_oauth2_access_token;
 use crate::types::*;

@@ -472,9 +472,12 @@ impl Imap {
    }

    fn unsetup_handle(&self, context: &Context) {
-        info!(context, "IMAP unsetup_handle starts");
+        info!(context, 0, "IMAP unsetup_handle starts");

-        info!(context, "IMAP unsetup_handle step 1 (closing down stream).");
+        info!(
+            context,
+            0, "IMAP unsetup_handle step 1 (closing down stream)."
+        );
        let stream = self.stream.write().unwrap().take();
        if let Some(stream) = stream {
            if let Err(err) = stream.shutdown(net::Shutdown::Both) {
@@ -484,7 +487,7 @@ impl Imap {

        info!(
            context,
-            "IMAP unsetup_handle step 2 (acquiring session.lock)"
+            0, "IMAP unsetup_handle step 2 (acquiring session.lock)"
        );
        if let Some(mut session) = self.session.lock().unwrap().take() {
            if let Err(err) = session.close() {
@@ -492,10 +495,10 @@ impl Imap {
            }
        }

-        info!(context, "IMAP unsetup_handle step 3 (clearing config).");
+        info!(context, 0, "IMAP unsetup_handle step 3 (clearing config).");
        self.config.write().unwrap().selected_folder = None;
        self.config.write().unwrap().selected_mailbox = None;
-        info!(context, "IMAP unsetup_handle step 4 (disconnected).",);
+        info!(context, 0, "IMAP unsetup_handle step 4 (disconnected).",);
    }

    fn free_connect_params(&self) {
@@ -513,7 +516,7 @@ impl Imap {
        cfg.watch_folder = None;
    }

-    pub fn connect(&self, context: &Context, lp: &LoginParam) -> bool {
+    pub fn connect(&self, context: &Context, lp: &dc_loginparam_t) -> bool {
        if lp.mail_server.is_empty() || lp.mail_user.is_empty() || lp.mail_pw.is_empty() {
            return false;
        }
@@ -548,7 +551,7 @@ impl Imap {
            Some(ref mut session) => match session.capabilities() {
                Ok(caps) => {
                    if !context.sql.is_open() {
-                        warn!(context, "IMAP-LOGIN as {} ok but ABORTING", lp.mail_user,);
+                        warn!(context, 0, "IMAP-LOGIN as {} ok but ABORTING", lp.mail_user,);
                        (true, false, false)
                    } else {
                        let can_idle = caps.has_str("IDLE");
@@ -568,7 +571,7 @@ impl Imap {
                    }
                }
                Err(err) => {
-                    info!(context, "CAPABILITY command error: {}", err);
+                    info!(context, 0, "CAPABILITY command error: {}", err);
                    (true, false, false)
                }
            },
@@ -644,7 +647,7 @@ impl Imap {
        // deselect existing folder, if needed (it's also done implicitly by SELECT, however, without EXPUNGE then)
        if self.config.read().unwrap().selected_folder_needs_expunge {
            if let Some(ref folder) = self.config.read().unwrap().selected_folder {
-                info!(context, "Expunge messages in \"{}\".", folder);
+                info!(context, 0, "Expunge messages in \"{}\".", folder);

                // A CLOSE-SELECT is considerably faster than an EXPUNGE-SELECT, see
                // https://tools.ietf.org/html/rfc3501#section-6.4.2
@@ -674,6 +677,7 @@ impl Imap {
                    Err(err) => {
                        info!(
                            context,
+                            0,
                            "Cannot select folder: {}; {:?}.",
                            folder.as_ref(),
                            err
@@ -710,6 +714,7 @@ impl Imap {
        if !self.is_connected() {
            info!(
                context,
+                0,
                "Cannot fetch from \"{}\" - not connected.",
                folder.as_ref()
            );
@@ -720,6 +725,7 @@ impl Imap {
        if self.select_folder(context, Some(&folder)) == 0 {
            info!(
                context,
+                0,
                "Cannot select folder \"{}\" for fetching.",
                folder.as_ref()
            );
@@ -736,6 +742,7 @@ impl Imap {
        if mailbox.uid_validity.is_none() {
            error!(
                context,
+                0,
                "Cannot get UIDVALIDITY for folder \"{}\".",
                folder.as_ref(),
            );
@@ -747,7 +754,7 @@ impl Imap {
            // first time this folder is selected or UIDVALIDITY has changed, init lastseenuid and save it to config

            if mailbox.exists == 0 {
-                info!(context, "Folder \"{}\" is empty.", folder.as_ref());
+                info!(context, 0, "Folder \"{}\" is empty.", folder.as_ref());

                // set lastseenuid=0 for empty folders.
                // id we do not do this here, we'll miss the first message
@@ -766,6 +773,7 @@ impl Imap {
                        self.should_reconnect.store(true, Ordering::Relaxed);
                        info!(
                            context,
+                            0,
                            "No result returned for folder \"{}\".",
                            folder.as_ref()
                        );
@@ -788,6 +796,7 @@ impl Imap {
            self.set_config_last_seen_uid(context, &folder, uid_validity, last_seen_uid);
            info!(
                context,
+                0,
                "lastseenuid initialized to {} for {}@{}",
                last_seen_uid,
                folder.as_ref(),
@@ -806,7 +815,7 @@ impl Imap {
            match session.uid_fetch(set, PREFETCH_FLAGS) {
                Ok(list) => list,
                Err(err) => {
-                    warn!(context, "failed to fetch uids: {}", err);
+                    warn!(context, 0, "failed to fetch uids: {}", err);
                    return 0;
                }
            }
@@ -834,6 +843,7 @@ impl Imap {
                    if self.fetch_single_msg(context, &folder, cur_uid) == 0 {
                        info!(
                            context,
+                            0,
                            "Read error for message {} from \"{}\", trying over later.",
                            message_id,
                            folder.as_ref()
@@ -845,6 +855,7 @@ impl Imap {
                    // check failed
                    info!(
                        context,
+                        0,
                        "Skipping message {} from \"{}\" by precheck.",
                        message_id,
                        folder.as_ref(),
@@ -865,6 +876,7 @@ impl Imap {
        if read_errors > 0 {
            warn!(
                context,
+                0,
                "{} mails read from \"{}\" with {} errors.",
                read_cnt,
                folder.as_ref(),
@@ -873,6 +885,7 @@ impl Imap {
        } else {
            info!(
                context,
+                0,
                "{} mails read from \"{}\".",
                read_cnt,
                folder.as_ref()
@@ -917,6 +930,7 @@ impl Imap {
                    self.should_reconnect.store(true, Ordering::Relaxed);
                    warn!(
                        context,
+                        0,
                        "Error on fetching message #{} from folder \"{}\"; retry={}; error={}.",
                        server_uid,
                        folder.as_ref(),
@@ -933,6 +947,7 @@ impl Imap {
        if msgs.is_empty() {
            warn!(
                context,
+                0,
                "Message #{} does not exist in folder \"{}\".",
                server_uid,
                folder.as_ref()
@@ -986,7 +1001,7 @@ impl Imap {

        let watch_folder = self.config.read().unwrap().watch_folder.clone();
        if self.select_folder(context, watch_folder.as_ref()) == 0 {
-            warn!(context, "IMAP-IDLE not setup.",);
+            warn!(context, 0, "IMAP-IDLE not setup.",);

            return self.fake_idle(context);
        }
@@ -996,7 +1011,7 @@ impl Imap {
            let (sender, receiver) = std::sync::mpsc::channel();
            let v = self.watch.clone();

-            info!(context, "IMAP-IDLE SPAWNING");
+            info!(context, 0, "IMAP-IDLE SPAWNING");
            std::thread::spawn(move || {
                let &(ref lock, ref cvar) = &*v;
                if let Some(ref mut session) = &mut *session.lock().unwrap() {
@@ -1031,15 +1046,18 @@ impl Imap {

        let handle_res = |res| match res {
            Ok(()) => {
-                info!(context, "IMAP-IDLE has data.");
+                info!(context, 0, "IMAP-IDLE has data.");
            }
            Err(err) => match err {
                imap::error::Error::ConnectionLost => {
-                    info!(context, "IMAP-IDLE wait cancelled, we will reconnect soon.");
+                    info!(
+                        context,
+                        0, "IMAP-IDLE wait cancelled, we will reconnect soon."
+                    );
                    self.should_reconnect.store(true, Ordering::Relaxed);
                }
                _ => {
-                    warn!(context, "IMAP-IDLE returns unknown value: {}", err);
+                    warn!(context, 0, "IMAP-IDLE returns unknown value: {}", err);
                }
            },
        };
@@ -1055,7 +1073,7 @@ impl Imap {
                    if let Ok(res) = worker.as_ref().unwrap().try_recv() {
                        handle_res(res);
                    } else {
-                        info!(context, "IMAP-IDLE interrupted");
+                        info!(context, 0, "IMAP-IDLE interrupted");
                    }

                    drop(worker.take());
@@ -1073,7 +1091,7 @@ impl Imap {
        let fake_idle_start_time = SystemTime::now();
        let mut wait_long = false;

-        info!(context, "IMAP-fake-IDLEing...");
+        info!(context, 0, "IMAP-fake-IDLEing...");

        let mut do_fake_idle = true;
        while do_fake_idle {
@@ -1149,6 +1167,7 @@ impl Imap {
        } else if folder.as_ref() == dest_folder.as_ref() {
            info!(
                context,
+                0,
                "Skip moving message; message {}/{} is already in {}...",
                folder.as_ref(),
                uid,
@@ -1159,6 +1178,7 @@ impl Imap {
        } else {
            info!(
                context,
+                0,
                "Moving message {}/{} to {}...",
                folder.as_ref(),
                uid,
@@ -1168,6 +1188,7 @@ impl Imap {
            if self.select_folder(context, Some(folder.as_ref())) == 0 {
                warn!(
                    context,
+                    0,
                    "Cannot select folder {} for moving message.",
                    folder.as_ref()
                );
@@ -1181,6 +1202,7 @@ impl Imap {
                        Err(err) => {
                            info!(
                                context,
+                                0,
                                "Cannot move message, fallback to COPY/DELETE {}/{} to {}: {}",
                                folder.as_ref(),
                                uid,
@@ -1201,7 +1223,7 @@ impl Imap {
                            Ok(_) => true,
                            Err(err) => {
                                eprintln!("error copy: {:?}", err);
-                                info!(context, "Cannot copy message.",);
+                                info!(context, 0, "Cannot copy message.",);

                                false
                            }
@@ -1212,7 +1234,7 @@ impl Imap {

                    if copied {
                        if self.add_flag(context, uid, "\\Deleted") == 0 {
-                            warn!(context, "Cannot mark message as \"Deleted\".",);
+                            warn!(context, 0, "Cannot mark message as \"Deleted\".",);
                        }
                        self.config.write().unwrap().selected_folder_needs_expunge = true;
                        res = DC_SUCCESS;
@@ -1249,7 +1271,7 @@ impl Imap {
                Err(err) => {
                    warn!(
                        context,
-                        "IMAP failed to store: ({}, {}) {:?}", set, query, err
+                        0, "IMAP failed to store: ({}, {}) {:?}", set, query, err
                    );
                }
            }
@@ -1272,6 +1294,7 @@ impl Imap {
        } else if self.is_connected() {
            info!(
                context,
+                0,
                "Marking message {}/{} as seen...",
                folder.as_ref(),
                uid,
@@ -1280,11 +1303,12 @@ impl Imap {
            if self.select_folder(context, Some(folder.as_ref())) == 0 {
                warn!(
                    context,
+                    0,
                    "Cannot select folder {} for setting SEEN flag.",
                    folder.as_ref(),
                );
            } else if self.add_flag(context, uid, "\\Seen") == 0 {
-                warn!(context, "Cannot mark message as seen.",);
+                warn!(context, 0, "Cannot mark message as seen.",);
            } else {
                res = DC_SUCCESS
            }
@@ -1311,6 +1335,7 @@ impl Imap {
        } else if self.is_connected() {
            info!(
                context,
+                0,
                "Marking message {}/{} as $MDNSent...",
                folder.as_ref(),
                uid,
@@ -1319,6 +1344,7 @@ impl Imap {
            if self.select_folder(context, Some(folder.as_ref())) == 0 {
                warn!(
                    context,
+                    0,
                    "Cannot select folder {} for setting $MDNSent flag.",
                    folder.as_ref()
                );
@@ -1385,16 +1411,16 @@ impl Imap {
                        };

                        if res == DC_SUCCESS {
-                            info!(context, "$MDNSent just set and MDN will be sent.");
+                            info!(context, 0, "$MDNSent just set and MDN will be sent.");
                        } else {
-                            info!(context, "$MDNSent already set and MDN already sent.");
+                            info!(context, 0, "$MDNSent already set and MDN already sent.");
                        }
                    }
                } else {
                    res = DC_SUCCESS;
                    info!(
                        context,
-                        "Cannot store $MDNSent flags, risk sending duplicate MDN.",
+                        0, "Cannot store $MDNSent flags, risk sending duplicate MDN.",
                    );
                }
            }
@@ -1425,6 +1451,7 @@ impl Imap {
        } else {
            info!(
                context,
+                0,
                "Marking message \"{}\", {}/{} for deletion...",
                message_id.as_ref(),
                folder.as_ref(),
@@ -1434,6 +1461,7 @@ impl Imap {
            if self.select_folder(context, Some(&folder)) == 0 {
                warn!(
                    context,
+                    0,
                    "Cannot select folder {} for deleting message.",
                    folder.as_ref()
                );
@@ -1454,6 +1482,7 @@ impl Imap {
                            {
                                warn!(
                                    context,
+                                    0,
                                    "Cannot delete on IMAP, {}/{} does not match {}.",
                                    folder.as_ref(),
                                    server_uid,
@@ -1467,6 +1496,7 @@ impl Imap {

                            warn!(
                                context,
+                                0,
                                "Cannot delete on IMAP, {}/{} not found.",
                                folder.as_ref(),
                                server_uid,
@@ -1478,7 +1508,7 @@ impl Imap {

                // mark the message for deletion
                if self.add_flag(context, *server_uid, "\\Deleted") == 0 {
-                    warn!(context, "Cannot mark message as \"Deleted\".");
+                    warn!(context, 0, "Cannot mark message as \"Deleted\".");
                } else {
                    self.config.write().unwrap().selected_folder_needs_expunge = true;
                    success = true
@@ -1498,7 +1528,7 @@ impl Imap {
            return;
        }

-        info!(context, "Configuring IMAP-folders.");
+        info!(context, 0, "Configuring IMAP-folders.");

        let folders = self.list_folders(context).unwrap();
        let delimiter = self.config.read().unwrap().imap_delimiter;
@@ -1517,19 +1547,21 @@ impl Imap {
            });

        if mvbox_folder.is_none() && 0 != (flags as usize & DC_CREATE_MVBOX) {
-            info!(context, "Creating MVBOX-folder \"DeltaChat\"...",);
+            info!(context, 0, "Creating MVBOX-folder \"DeltaChat\"...",);

            if let Some(ref mut session) = &mut *self.session.lock().unwrap() {
                match session.create("DeltaChat") {
                    Ok(_) => {
                        mvbox_folder = Some("DeltaChat".into());

-                        info!(context, "MVBOX-folder created.",);
+                        info!(context, 0, "MVBOX-folder created.",);
                    }
                    Err(err) => {
                        warn!(
                            context,
-                            "Cannot create MVBOX-folder, using trying INBOX subfolder. ({})", err
+                            0,
+                            "Cannot create MVBOX-folder, using trying INBOX subfolder. ({})",
+                            err
                        );

                        match session.create(&fallback_folder) {
@@ -1537,11 +1569,11 @@ impl Imap {
                                mvbox_folder = Some(fallback_folder);
                                info!(
                                    context,
-                                    "MVBOX-folder created as INBOX subfolder. ({})", err
+                                    0, "MVBOX-folder created as INBOX subfolder. ({})", err
                                );
                            }
                            Err(err) => {
-                                warn!(context, "Cannot create MVBOX-folder. ({})", err);
+                                warn!(context, 0, "Cannot create MVBOX-folder. ({})", err);
                            }
                        }
                    }
@@ -1587,13 +1619,13 @@ impl Imap {
            match session.list(Some(""), Some("*")) {
                Ok(list) => {
                    if list.is_empty() {
-                        warn!(context, "Folder list is empty.",);
+                        warn!(context, 0, "Folder list is empty.",);
                    }
                    Some(list)
                }
                Err(err) => {
                    eprintln!("list error: {:?}", err);
-                    warn!(context, "Cannot get folder list.",);
+                    warn!(context, 0, "Cannot get folder list.",);

                    None
                }
--- a/src/job.rs
+++ b/src/job.rs
@@ -10,11 +10,11 @@ use crate::configure::*;
 use crate::constants::*;
 use crate::context::Context;
 use crate::dc_imex::*;
+use crate::dc_loginparam::*;
 use crate::dc_mimefactory::*;
 use crate::dc_tools::*;
 use crate::imap::*;
 use crate::location;
-use crate::login_param::LoginParam;
 use crate::message::*;
 use crate::param::*;
 use crate::sql;
@@ -25,22 +25,13 @@ use crate::x::*;
 #[derive(Debug, Display, Copy, Clone, PartialEq, Eq, FromPrimitive, ToPrimitive, FromSql, ToSql)]
 #[repr(i32)]
 enum Thread {
-    Unknown = 0,
    Imap = 100,
    Smtp = 5000,
 }

-impl Default for Thread {
-    fn default() -> Self {
-        Thread::Unknown
-    }
-}
-
 #[derive(Debug, Display, Copy, Clone, PartialEq, Eq, FromPrimitive, ToPrimitive, FromSql, ToSql)]
 #[repr(i32)]
 pub enum Action {
-    Unknown = 0,
-
    // Jobs in the INBOX-thread, range from DC_IMAP_THREAD..DC_IMAP_THREAD+999
    Housekeeping = 105, // low priority ...
    DeleteMsgOnImap = 110,
@@ -59,19 +50,11 @@ pub enum Action {
    SendMsgToSmtp = 5901, // ... high priority
 }

-impl Default for Action {
-    fn default() -> Self {
-        Action::Unknown
-    }
-}
-
 impl From<Action> for Thread {
    fn from(action: Action) -> Thread {
        use Action::*;

        match action {
-            Unknown => Thread::Unknown,
-
            Housekeeping => Thread::Imap,
            DeleteMsgOnImap => Thread::Imap,
            MarkseenMdnOnImap => Thread::Imap,
@@ -128,19 +111,31 @@ impl Job {

    #[allow(non_snake_case)]
    fn do_DC_JOB_SEND(&mut self, context: &Context) {
+        let ok_to_continue;
+        let mut filename = ptr::null_mut();
+        let mut buf = ptr::null_mut();
+        let mut buf_bytes = 0;
+
        /* connect to SMTP server, if not yet done */
        if !context.smtp.lock().unwrap().is_connected() {
-            let loginparam = LoginParam::from_database(context, "configured_");
+            let loginparam = dc_loginparam_read(context, &context.sql, "configured_");
            let connected = context.smtp.lock().unwrap().connect(context, &loginparam);

            if !connected {
                self.try_again_later(3i32, None);
-                return;
+                ok_to_continue = false;
+            } else {
+                ok_to_continue = true;
            }
+        } else {
+            ok_to_continue = true;
        }
-
-        if let Some(filename) = self.param.get(Param::File) {
-            if let Some(body) = dc_read_file_safe(context, filename) {
+        if ok_to_continue {
+            let filename_s = self.param.get(Param::File).unwrap_or_default();
+            filename = unsafe { filename_s.strdup() };
+            if unsafe { strlen(filename) } == 0 {
+                warn!(context, 0, "Missing file name for job {}", self.job_id,);
+            } else if 0 != unsafe { dc_read_file(context, filename, &mut buf, &mut buf_bytes) } {
                if let Some(recipients) = self.param.get(Param::Recipients) {
                    let recipients_list = recipients
                        .split("\x1e")
@@ -152,61 +147,78 @@ impl Job {
                            }
                        })
                        .collect::<Vec<_>>();
-
                    /* if there is a msg-id and it does not exist in the db, cancel sending.
                    this happends if dc_delete_msgs() was called
                    before the generated mime was sent out */
-                    if 0 != self.foreign_id && !dc_msg_exists(context, self.foreign_id) {
-                        warn!(
-                            context,
-                            "Message {} for job {} does not exist", self.foreign_id, self.job_id,
-                        );
-                        return;
-                    };
-
-                    // hold the smtp lock during sending of a job and
-                    // its ok/error response processing. Note that if a message
-                    // was sent we need to mark it in the database as we
-                    // otherwise might send it twice.
-                    let mut sock = context.smtp.lock().unwrap();
-                    if 0 == sock.send(context, recipients_list, body) {
-                        sock.disconnect();
-                        self.try_again_later(-1i32, sock.error.clone());
-                    } else {
-                        dc_delete_file(context, filename);
-                        if 0 != self.foreign_id {
-                            dc_update_msg_state(
+                    let ok_to_continue1;
+                    if 0 != self.foreign_id {
+                        if 0 == unsafe { dc_msg_exists(context, self.foreign_id) } {
+                            warn!(
                                context,
+                                0,
+                                "Message {} for job {} does not exist",
                                self.foreign_id,
-                                MessageState::OutDelivered,
+                                self.job_id,
                            );
-                            let chat_id: i32 = context
-                                .sql
-                                .query_row_col(
+                            ok_to_continue1 = false;
+                        } else {
+                            ok_to_continue1 = true;
+                        }
+                    } else {
+                        ok_to_continue1 = true;
+                    }
+                    if ok_to_continue1 {
+                        /* send message */
+                        let body = unsafe {
+                            std::slice::from_raw_parts(buf as *const u8, buf_bytes).to_vec()
+                        };
+
+                        // hold the smtp lock during sending of a job and
+                        // its ok/error response processing. Note that if a message
+                        // was sent we need to mark it in the database as we
+                        // otherwise might send it twice.
+                        let mut sock = context.smtp.lock().unwrap();
+                        if 0 == sock.send(context, recipients_list, body) {
+                            sock.disconnect();
+                            self.try_again_later(-1i32, Some(as_str(sock.error)));
+                        } else {
+                            dc_delete_file(context, filename_s);
+                            if 0 != self.foreign_id {
+                                dc_update_msg_state(
                                    context,
-                                    "SELECT chat_id FROM msgs WHERE id=?",
-                                    params![self.foreign_id as i32],
-                                    0,
-                                )
-                                .unwrap_or_default();
-                            context.call_cb(
-                                Event::MSG_DELIVERED,
-                                chat_id as uintptr_t,
-                                self.foreign_id as uintptr_t,
-                            );
+                                    self.foreign_id,
+                                    MessageState::OutDelivered,
+                                );
+                                let chat_id: i32 = context
+                                    .sql
+                                    .query_row_col(
+                                        context,
+                                        "SELECT chat_id FROM msgs WHERE id=?",
+                                        params![self.foreign_id as i32],
+                                        0,
+                                    )
+                                    .unwrap_or_default();
+                                context.call_cb(
+                                    Event::MSG_DELIVERED,
+                                    chat_id as uintptr_t,
+                                    self.foreign_id as uintptr_t,
+                                );
+                            }
                        }
                    }
                } else {
-                    warn!(context, "Missing recipients for job {}", self.job_id,);
+                    warn!(context, 0, "Missing recipients for job {}", self.job_id,);
                }
            }
        }
+        unsafe { free(buf) };
+        unsafe { free(filename.cast()) };
    }

    // this value does not increase the number of tries
-    fn try_again_later(&mut self, try_again: libc::c_int, pending_error: Option<String>) {
+    fn try_again_later(&mut self, try_again: libc::c_int, pending_error: Option<&str>) {
        self.try_again = try_again;
-        self.pending_error = pending_error;
+        self.pending_error = pending_error.map(|s| s.to_string());
    }

    #[allow(non_snake_case)]
@@ -277,7 +289,7 @@ impl Job {
                if dc_rfc724_mid_cnt(context, msg.rfc724_mid) != 1 {
                    info!(
                        context,
-                        "The message is deleted from the server when all parts are deleted.",
+                        0, "The message is deleted from the server when all parts are deleted.",
                    );
                    delete_from_server = 0i32
                }
@@ -440,17 +452,18 @@ pub fn perform_imap_fetch(context: &Context) {
        .unwrap_or_else(|| 1)
        == 0
    {
-        info!(context, "INBOX-watch disabled.",);
+        info!(context, 0, "INBOX-watch disabled.",);
        return;
    }
-    info!(context, "INBOX-fetch started...",);
+    info!(context, 0, "INBOX-fetch started...",);
    inbox.fetch(context);
    if inbox.should_reconnect() {
-        info!(context, "INBOX-fetch aborted, starting over...",);
+        info!(context, 0, "INBOX-fetch aborted, starting over...",);
        inbox.fetch(context);
    }
    info!(
        context,
+        0,
        "INBOX-fetch done in {:.4} ms.",
        start.elapsed().as_nanos() as f64 / 1000.0,
    );
@@ -464,13 +477,13 @@ pub fn perform_imap_idle(context: &Context) {
    if *context.perform_inbox_jobs_needed.clone().read().unwrap() {
        info!(
            context,
-            "INBOX-IDLE will not be started because of waiting jobs."
+            0, "INBOX-IDLE will not be started because of waiting jobs."
        );
        return;
    }
-    info!(context, "INBOX-IDLE started...");
+    info!(context, 0, "INBOX-IDLE started...");
    inbox.idle(context);
-    info!(context, "INBOX-IDLE ended.");
+    info!(context, 0, "INBOX-IDLE ended.");
 }

 pub fn perform_mvbox_fetch(context: &Context) {
@@ -547,16 +560,16 @@ pub fn perform_smtp_jobs(context: &Context) {
        state.perform_jobs_needed = 0;

        if state.suspended {
-            info!(context, "SMTP-jobs suspended.",);
+            info!(context, 0, "SMTP-jobs suspended.",);
            return;
        }
        state.doing_jobs = true;
        probe_smtp_network
    };

-    info!(context, "SMTP-jobs started...",);
+    info!(context, 0, "SMTP-jobs started...",);
    job_perform(context, Thread::Smtp, probe_smtp_network);
-    info!(context, "SMTP-jobs ended.");
+    info!(context, 0, "SMTP-jobs ended.");

    {
        let &(ref lock, _) = &*context.smtp_state.clone();
@@ -567,7 +580,7 @@ pub fn perform_smtp_jobs(context: &Context) {
 }

 pub fn perform_smtp_idle(context: &Context) {
-    info!(context, "SMTP-idle started...",);
+    info!(context, 0, "SMTP-idle started...",);
    {
        let &(ref lock, ref cvar) = &*context.smtp_state.clone();
        let mut state = lock.lock().unwrap();
@@ -575,7 +588,7 @@ pub fn perform_smtp_idle(context: &Context) {
        if state.perform_jobs_needed == 1 {
            info!(
                context,
-                "SMTP-idle will not be started because of waiting jobs.",
+                0, "SMTP-idle will not be started because of waiting jobs.",
            );
        } else {
            let dur = get_next_wakeup_time(context, Thread::Smtp);
@@ -593,7 +606,7 @@ pub fn perform_smtp_idle(context: &Context) {
        }
    }

-    info!(context, "SMTP-idle ended.",);
+    info!(context, 0, "SMTP-idle ended.",);
 }

 fn get_next_wakeup_time(context: &Context, thread: Thread) -> Duration {
@@ -652,7 +665,7 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
    if mimefactory.is_err() || mimefactory.as_ref().unwrap().from_addr.is_null() {
        warn!(
            context,
-            "Cannot load data to send, maybe the message is deleted in between.",
+            0, "Cannot load data to send, maybe the message is deleted in between.",
        );
    } else {
        let mut mimefactory = mimefactory.unwrap();
@@ -677,12 +690,12 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
                            mimefactory.msg.param.set_int(Param::Height, height as i32);
                        }
                    }
-                    dc_msg_save_param_to_disk(context, &mut mimefactory.msg);
+                    dc_msg_save_param_to_disk(&mut mimefactory.msg);
                }
            }
        }
        /* create message */
-        if 0 == dc_mimefactory_render(context, &mut mimefactory) {
+        if 0 == dc_mimefactory_render(&mut mimefactory) {
            dc_set_msg_failed(context, msg_id, as_opt_str(mimefactory.error));
        } else if 0
            != mimefactory
@@ -694,6 +707,7 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
        {
            warn!(
                context,
+                0,
                "e2e encryption unavailable {} - {:?}",
                msg_id,
                mimefactory.msg.param.get_int(Param::GuranteeE2ee),
@@ -705,7 +719,9 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
            );
        } else {
            /* unrecoverable */
-            if !clist_search_string_nocase(mimefactory.recipients_addr, mimefactory.from_addr) {
+            if clist_search_string_nocase(mimefactory.recipients_addr, mimefactory.from_addr)
+                == 0i32
+            {
                clist_insert_after(
                    mimefactory.recipients_names,
                    (*mimefactory.recipients_names).last,
@@ -724,7 +740,7 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
                if let Err(err) =
                    location::set_kml_sent_timestamp(context, mimefactory.msg.chat_id, time())
                {
-                    error!(context, "Failed to set kml sent_timestamp: {:?}", err);
+                    error!(context, 0, "Failed to set kml sent_timestamp: {:?}", err);
                }
                if !mimefactory.msg.hidden {
                    if let Err(err) = location::set_msg_location_id(
@@ -732,7 +748,7 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
                        mimefactory.msg.id,
                        mimefactory.out_last_added_location_id,
                    ) {
-                        error!(context, "Failed to set msg_location_id: {:?}", err);
+                        error!(context, 0, "Failed to set msg_location_id: {:?}", err);
                    }
                }
            }
@@ -745,7 +761,7 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
                    == 0
            {
                mimefactory.msg.param.set_int(Param::GuranteeE2ee, 1);
-                dc_msg_save_param_to_disk(context, &mut mimefactory.msg);
+                dc_msg_save_param_to_disk(&mut mimefactory.msg);
            }
            success = add_smtp_job(context, Action::SendMsgToSmtp, &mut mimefactory);
        }
@@ -755,14 +771,14 @@ pub unsafe fn job_send_msg(context: &Context, msg_id: uint32_t) -> libc::c_int {
 }

 pub fn perform_imap_jobs(context: &Context) {
-    info!(context, "dc_perform_imap_jobs starting.",);
+    info!(context, 0, "dc_perform_imap_jobs starting.",);

    let probe_imap_network = *context.probe_imap_network.clone().read().unwrap();
    *context.probe_imap_network.write().unwrap() = false;
    *context.perform_inbox_jobs_needed.write().unwrap() = false;

    job_perform(context, Thread::Imap, probe_imap_network);
-    info!(context, "dc_perform_imap_jobs ended.",);
+    info!(context, 0, "dc_perform_imap_jobs ended.",);
 }

 fn job_perform(context: &Context, thread: Thread, probe_network: bool) {
@@ -810,13 +826,14 @@ fn job_perform(context: &Context, thread: Thread, probe_network: bool) {
    match jobs {
        Ok(ref _res) => {}
        Err(ref err) => {
-            info!(context, "query failed: {:?}", err);
+            info!(context, 0, "query failed: {:?}", err);
        }
    }

    for mut job in jobs.unwrap_or_default() {
        info!(
            context,
+            0,
            "{}-job #{}, action {} started...",
            if thread == Thread::Imap {
                "INBOX"
@@ -854,9 +871,6 @@ fn job_perform(context: &Context, thread: Thread, probe_network: bool) {
            job.try_again = 0;

            match job.action {
-                Action::Unknown => {
-                    warn!(context, "Unknown job id found");
-                }
                Action::SendMsgToSmtp => job.do_DC_JOB_SEND(context),
                Action::DeleteMsgOnImap => job.do_DC_JOB_DELETE_MSG_ON_IMAP(context),
                Action::MarkseenMsgOnImap => job.do_DC_JOB_MARKSEEN_MSG_ON_IMAP(context),
@@ -899,6 +913,7 @@ fn job_perform(context: &Context, thread: Thread, probe_network: bool) {
            // just try over next loop unconditionally, the ui typically interrupts idle when the file (video) is ready
            info!(
                context,
+                0,
                "{}-job #{} not yet ready and will be delayed.",
                if thread == Thread::Imap {
                    "INBOX"
@@ -916,6 +931,7 @@ fn job_perform(context: &Context, thread: Thread, probe_network: bool) {
                job.update(context);
                info!(
                    context,
+                    0,
                    "{}-job #{} not succeeded on try #{}, retry in ADD_TIME+{} (in {} seconds).",
                    if thread == Thread::Imap {
                        "INBOX"
@@ -992,7 +1008,7 @@ fn connect_to_inbox(context: &Context, inbox: &Imap) -> libc::c_int {

 fn send_mdn(context: &Context, msg_id: uint32_t) {
    if let Ok(mut mimefactory) = unsafe { dc_mimefactory_load_mdn(context, msg_id) } {
-        if 0 != unsafe { dc_mimefactory_render(context, &mut mimefactory) } {
+        if 0 != unsafe { dc_mimefactory_render(&mut mimefactory) } {
            add_smtp_job(context, Action::SendMdn, &mut mimefactory);
        }
    }
@@ -1014,6 +1030,7 @@ fn add_smtp_job(context: &Context, action: Action, mimefactory: &dc_mimefactory_
    if pathNfilename.is_null() {
        error!(
            context,
+            0,
            "Could not find free file name for message with ID <{}>.",
            to_string(mimefactory.rfc724_mid),
        );
@@ -1029,6 +1046,7 @@ fn add_smtp_job(context: &Context, action: Action, mimefactory: &dc_mimefactory_
    {
        error!(
            context,
+            0,
            "Could not write message <{}> to \"{}\".",
            to_string(mimefactory.rfc724_mid),
            as_str(pathNfilename),
@@ -1071,11 +1089,6 @@ pub fn job_add(
    param: Params,
    delay_seconds: i64,
 ) {
-    if action == Action::Unknown {
-        error!(context, "Invalid action passed to job_add");
-        return;
-    }
-
    let timestamp = time();
    let thread: Thread = action.into();

@@ -1096,12 +1109,11 @@ pub fn job_add(
    match thread {
        Thread::Imap => interrupt_imap_idle(context),
        Thread::Smtp => interrupt_smtp_idle(context),
-        Thread::Unknown => {}
    }
 }

 pub fn interrupt_smtp_idle(context: &Context) {
-    info!(context, "Interrupting SMTP-idle...",);
+    info!(context, 0, "Interrupting SMTP-idle...",);

    let &(ref lock, ref cvar) = &*context.smtp_state.clone();
    let mut state = lock.lock().unwrap();
@@ -1112,7 +1124,7 @@ pub fn interrupt_smtp_idle(context: &Context) {
 }

 pub fn interrupt_imap_idle(context: &Context) {
-    info!(context, "Interrupting IMAP-IDLE...",);
+    info!(context, 0, "Interrupting IMAP-IDLE...",);

    *context.perform_inbox_jobs_needed.write().unwrap() = true;
    context.inbox.read().unwrap().interrupt_idle();
--- a/src/job_thread.rs
+++ b/src/job_thread.rs
@@ -30,7 +30,7 @@ impl JobThread {
    }

    pub fn suspend(&self, context: &Context) {
-        info!(context, "Suspending {}-thread.", self.name,);
+        info!(context, 0, "Suspending {}-thread.", self.name,);
        {
            self.state.0.lock().unwrap().suspended = true;
        }
@@ -45,7 +45,7 @@ impl JobThread {
    }

    pub fn unsuspend(&self, context: &Context) {
-        info!(context, "Unsuspending {}-thread.", self.name);
+        info!(context, 0, "Unsuspending {}-thread.", self.name);

        let &(ref lock, ref cvar) = &*self.state.clone();
        let mut state = lock.lock().unwrap();
@@ -60,7 +60,7 @@ impl JobThread {
            self.state.0.lock().unwrap().jobs_needed = 1;
        }

-        info!(context, "Interrupting {}-IDLE...", self.name);
+        info!(context, 0, "Interrupting {}-IDLE...", self.name);

        self.imap.interrupt_idle();

@@ -86,15 +86,16 @@ impl JobThread {
        if use_network {
            let start = std::time::Instant::now();
            if self.connect_to_imap(context) {
-                info!(context, "{}-fetch started...", self.name);
+                info!(context, 0, "{}-fetch started...", self.name);
                self.imap.fetch(context);

                if self.imap.should_reconnect() {
-                    info!(context, "{}-fetch aborted, starting over...", self.name,);
+                    info!(context, 0, "{}-fetch aborted, starting over...", self.name,);
                    self.imap.fetch(context);
                }
                info!(
                    context,
+                    0,
                    "{}-fetch done in {:.3} ms.",
                    self.name,
                    start.elapsed().as_millis(),
@@ -141,6 +142,7 @@ impl JobThread {
            if 0 != state.jobs_needed {
                info!(
                    context,
+                    0,
                    "{}-IDLE will not be started as it was interrupted while not ideling.",
                    self.name,
                );
@@ -170,9 +172,9 @@ impl JobThread {
        }

        self.connect_to_imap(context);
-        info!(context, "{}-IDLE started...", self.name,);
+        info!(context, 0, "{}-IDLE started...", self.name,);
        self.imap.idle(context);
-        info!(context, "{}-IDLE ended.", self.name);
+        info!(context, 0, "{}-IDLE ended.", self.name);

        self.state.0.lock().unwrap().using_handle = false;
    }
--- a/src/key.rs
+++ b/src/key.rs
@@ -1,6 +1,7 @@
 use std::collections::BTreeMap;
 use std::ffi::{CStr, CString};
 use std::io::Cursor;
+use std::slice;

 use libc;
 use pgp::composed::{Deserializable, SignedPublicKey, SignedSecretKey};
@@ -105,6 +106,15 @@ impl Key {
        }
    }

+    pub fn from_binary(data: *const u8, len: libc::c_int, key_type: KeyType) -> Option<Self> {
+        if data.is_null() || len == 0 {
+            return None;
+        }
+
+        let bytes = unsafe { slice::from_raw_parts(data, len as usize) };
+        Self::from_slice(bytes, key_type)
+    }
+
    pub fn from_armored_string(
        data: &str,
        key_type: KeyType,
@@ -235,7 +245,7 @@ impl Key {
                    file_content_c.as_bytes().len(),
                )
            } {
-            error!(context, "Cannot write key to {}", to_string(file));
+            error!(context, 0, "Cannot write key to {}", to_string(file));
            false
        } else {
            true
@@ -439,27 +449,6 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
        assert_eq!(private_key, private_key2);
    }

-    #[test]
-    fn test_from_slice_bad_data() {
-        let mut bad_data: [u8; 4096] = [0; 4096];
-
-        for i in 0..4096 {
-            bad_data[i] = (i & 0xff) as u8;
-        }
-
-        for j in 0..(4096 / 40) {
-            let bad_key = Key::from_slice(
-                &bad_data[j..j + 4096 / 2 + j],
-                if 0 != j & 1 {
-                    KeyType::Public
-                } else {
-                    KeyType::Private
-                },
-            );
-            assert!(bad_key.is_none());
-        }
-    }
-
    #[test]
    #[ignore] // is too expensive
    fn test_ascii_roundtrip() {
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -16,8 +16,6 @@ extern crate rusqlite;
 extern crate strum;
 #[macro_use]
 extern crate strum_macros;
-#[macro_use]
-extern crate jetscii;

 #[macro_use]
 mod log;
@@ -55,15 +53,15 @@ pub mod x;
 pub mod dc_array;
 mod dc_dehtml;
 pub mod dc_imex;
+mod dc_loginparam;
 mod dc_mimefactory;
 pub mod dc_mimeparser;
 pub mod dc_receive_imf;
+pub mod dc_securejoin;
 mod dc_simplify;
 mod dc_strencode;
+mod dc_token;
 pub mod dc_tools;
-mod login_param;
-pub mod securejoin;
-mod token;

 #[cfg(test)]
 mod test_utils;
--- a/src/location.rs
+++ b/src/location.rs
@@ -84,6 +84,7 @@ impl Kml {
                Err(e) => {
                    error!(
                        context,
+                        0,
                        "Location parsing: Error at position {}: {:?}",
                        reader.buffer_position(),
                        e
@@ -215,11 +216,11 @@ pub fn send_locations_to_chat(context: &Context, chat_id: u32, seconds: i64) {
        .is_ok()
        {
            if 0 != seconds && !is_sending_locations_before {
-                msg = dc_msg_new(Viewtype::Text);
+                msg = dc_msg_new(context, Viewtype::Text);
                msg.text =
                    Some(context.stock_system_msg(StockMessage::MsgLocationEnabled, "", "", 0));
                msg.param.set_int(Param::Cmd, 8);
-                chat::send_msg(context, chat_id, &mut msg).unwrap();
+                unsafe { chat::send_msg(context, chat_id, &mut msg).unwrap() };
            } else if 0 == seconds && is_sending_locations_before {
                let stock_str =
                    context.stock_system_msg(StockMessage::MsgLocationDisabled, "", "", 0);
@@ -265,16 +266,16 @@ pub fn set(context: &Context, latitude: f64, longitude: f64, accuracy: f64) -> l
    if latitude == 0.0 && longitude == 0.0 {
        return 1;
    }
-    let mut continue_streaming = false;

-    if let Ok(chats) = context.sql.query_map(
+    context.sql.query_map(
        "SELECT id FROM chats WHERE locations_send_until>?;",
-        params![time()],
-        |row| row.get::<_, i32>(0),
-        |chats| chats.collect::<Result<Vec<_>, _>>().map_err(Into::into),
-    ) {
-        for chat_id in chats {
-            if let Err(err) = context.sql.execute(
+        params![time()], |row| row.get::<_, i32>(0),
+        |chats| {
+            let mut continue_streaming = false;
+
+            for chat in chats {
+                let chat_id = chat?;
+                context.sql.execute(
                    "INSERT INTO locations  \
                     (latitude, longitude, accuracy, timestamp, chat_id, from_id) VALUES (?,?,?,?,?,?);",
                    params![
@@ -285,19 +286,16 @@ pub fn set(context: &Context, latitude: f64, longitude: f64, accuracy: f64) -> l
                        chat_id,
                        1,
                    ]
-            ) {
-                warn!(context, "failed to store location {:?}", err);
-            } else {
+                )?;
                continue_streaming = true;
            }
+            if continue_streaming {
+                context.call_cb(Event::LOCATION_CHANGED, 1, 0);
+            };
+            schedule_MAYBE_SEND_LOCATIONS(context, 0);
+            Ok(continue_streaming as libc::c_int)
        }
-        if continue_streaming {
-            context.call_cb(Event::LOCATION_CHANGED, 1, 0);
-        };
-        schedule_MAYBE_SEND_LOCATIONS(context, 0);
-    }
-
-    continue_streaming as libc::c_int
+    ).unwrap_or_default()
 }

 pub fn get_range(
@@ -548,81 +546,76 @@ pub fn job_do_DC_JOB_MAYBE_SEND_LOCATIONS(context: &Context, _job: &Job) {
    let mut continue_streaming: libc::c_int = 1;
    info!(
        context,
-        " ----------------- MAYBE_SEND_LOCATIONS -------------- ",
+        0, " ----------------- MAYBE_SEND_LOCATIONS -------------- ",
    );

-    if let Ok(rows) = context.sql.query_map(
-        "SELECT id, locations_send_begin, locations_last_sent \
-         FROM chats \
-         WHERE locations_send_until>?;",
-        params![now],
-        |row| {
-            let chat_id: i32 = row.get(0)?;
-            let locations_send_begin: i64 = row.get(1)?;
-            let locations_last_sent: i64 = row.get(2)?;
-            continue_streaming = 1;
+    context
+        .sql
+        .query_map(
+            "SELECT id, locations_send_begin, locations_last_sent \
+             FROM chats \
+             WHERE locations_send_until>?;",
+            params![now],
+            |row| {
+                let chat_id: i32 = row.get(0)?;
+                let locations_send_begin: i64 = row.get(1)?;
+                let locations_last_sent: i64 = row.get(2)?;
+                continue_streaming = 1;

-            // be a bit tolerant as the timer may not align exactly with time(NULL)
-            if now - locations_last_sent < (60 - 3) {
-                Ok(None)
-            } else {
-                Ok(Some((chat_id, locations_send_begin, locations_last_sent)))
-            }
-        },
-        |rows| {
-            rows.filter_map(|v| v.transpose())
-                .collect::<Result<Vec<_>, _>>()
-                .map_err(Into::into)
-        },
-    ) {
-        let msgs = context
-            .sql
-            .prepare(
-                "SELECT id \
-                 FROM locations \
-                 WHERE from_id=? \
-                 AND timestamp>=? \
-                 AND timestamp>? \
-                 AND independent=0 \
-                 ORDER BY timestamp;",
-                |mut stmt_locations, _| {
-                    let msgs = rows
-                        .into_iter()
-                        .filter_map(|(chat_id, locations_send_begin, locations_last_sent)| {
+                // be a bit tolerant as the timer may not align exactly with time(NULL)
+                if now - locations_last_sent < (60 - 3) {
+                    Ok(None)
+                } else {
+                    Ok(Some((chat_id, locations_send_begin, locations_last_sent)))
+                }
+            },
+            |rows| {
+                context.sql.prepare(
+                    "SELECT id \
+                     FROM locations \
+                     WHERE from_id=? \
+                     AND timestamp>=? \
+                     AND timestamp>? \
+                     AND independent=0 \
+                     ORDER BY timestamp;",
+                    |mut stmt_locations, _| {
+                        for (chat_id, locations_send_begin, locations_last_sent) in
+                            rows.filter_map(|r| match r {
+                                Ok(Some(v)) => Some(v),
+                                _ => None,
+                            })
+                        {
+                            // TODO: do I need to reset?
                            if !stmt_locations
                                .exists(params![1, locations_send_begin, locations_last_sent,])
                                .unwrap_or_default()
                            {
                                // if there is no new location, there's nothing to send.
                                // however, maybe we want to bypass this test eg. 15 minutes
-                                None
-                            } else {
-                                // pending locations are attached automatically to every message,
-                                // so also to this empty text message.
-                                // DC_CMD_LOCATION is only needed to create a nicer subject.
-                                //
-                                // for optimisation and to avoid flooding the sending queue,
-                                // we could sending these messages only if we're really online.
-                                // the easiest way to determine this, is to check for an empty message queue.
-                                // (might not be 100%, however, as positions are sent combined later
-                                // and dc_set_location() is typically called periodically, this is ok)
-                                let mut msg = dc_msg_new(Viewtype::Text);
-                                msg.hidden = true;
-                                msg.param.set_int(Param::Cmd, 9);
-                                Some((chat_id, msg))
+                                continue;
                            }
-                        })
-                        .collect::<Vec<_>>();
-                    Ok(msgs)
-                },
-            )
-            .unwrap_or_default(); // TODO: Better error handling
+                            // pending locations are attached automatically to every message,
+                            // so also to this empty text message.
+                            // DC_CMD_LOCATION is only needed to create a nicer subject.
+                            //
+                            // for optimisation and to avoid flooding the sending queue,
+                            // we could sending these messages only if we're really online.
+                            // the easiest way to determine this, is to check for an empty message queue.
+                            // (might not be 100%, however, as positions are sent combined later
+                            // and dc_set_location() is typically called periodically, this is ok)
+                            let mut msg = dc_msg_new(context, Viewtype::Text);
+                            msg.hidden = true;
+                            msg.param.set_int(Param::Cmd, 9);
+                            // TODO: handle cleanup on error
+                            unsafe { chat::send_msg(context, chat_id as u32, &mut msg).unwrap() };
+                        }
+                        Ok(())
+                    },
+                )
+            },
+        )
+        .unwrap(); // TODO: Better error handling

-        for (chat_id, mut msg) in msgs.into_iter() {
-            // TODO: better error handling
-            chat::send_msg(context, chat_id as u32, &mut msg).unwrap();
-        }
-    }
    if 0 != continue_streaming {
        schedule_MAYBE_SEND_LOCATIONS(context, 0x1);
    }
--- a/src/log.rs
+++ b/src/log.rs
@@ -1,31 +1,46 @@
 #[macro_export]
 macro_rules! info {
-    ($ctx:expr,  $msg:expr) => {
-        info!($ctx, $msg,)
-    };
-    ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {
-        log_event!($ctx, $crate::constants::Event::INFO, 0, $msg, $($args),*);
+    ($ctx:expr, $data1:expr, $msg:expr) => {
+        info!($ctx, $data1, $msg,)
    };
+    ($ctx:expr, $data1:expr, $msg:expr, $($args:expr),* $(,)?) => {
+        #[allow(unused_unsafe)]
+        unsafe {
+            let formatted = format!($msg, $($args),*);
+            let formatted_c =  std::ffi::CString::new(formatted).unwrap();
+            $ctx.call_cb($crate::constants::Event::INFO, $data1 as libc::uintptr_t,
+                     formatted_c.as_ptr() as libc::uintptr_t);
+    }};
 }

 #[macro_export]
 macro_rules! warn {
-    ($ctx:expr, $msg:expr) => {
-        warn!($ctx, $msg,)
-    };
-    ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {
-        log_event!($ctx, $crate::constants::Event::WARNING, 0, $msg, $($args),*);
+    ($ctx:expr, $data1:expr, $msg:expr) => {
+        warn!($ctx, $data1, $msg,)
    };
+    ($ctx:expr, $data1:expr, $msg:expr, $($args:expr),* $(,)?) => {
+        #[allow(unused_unsafe)]
+        unsafe {
+            let formatted = format!($msg, $($args),*);
+            let formatted_c = std::ffi::CString::new(formatted).unwrap();
+            $ctx.call_cb($crate::constants::Event::WARNING, $data1 as libc::uintptr_t,
+                         formatted_c.as_ptr() as libc::uintptr_t);
+        }};
 }

 #[macro_export]
 macro_rules! error {
-    ($ctx:expr, $msg:expr) => {
-        error!($ctx, $msg,)
-    };
-    ($ctx:expr, $msg:expr, $($args:expr),* $(,)?) => {
-        log_event!($ctx, $crate::constants::Event::ERROR, 0, $msg, $($args),*);
+    ($ctx:expr, $data1:expr, $msg:expr) => {
+        error!($ctx, $data1, $msg,)
    };
+    ($ctx:expr, $data1:expr, $msg:expr, $($args:expr),* $(,)?) => {
+        #[allow(unused_unsafe)]
+        unsafe {
+        let formatted = format!($msg, $($args),*);
+        let formatted_c = std::ffi::CString::new(formatted).unwrap();
+        $ctx.call_cb($crate::constants::Event::ERROR, $data1 as libc::uintptr_t,
+                     formatted_c.as_ptr() as libc::uintptr_t);
+    }};
 }

 #[macro_export]
@@ -34,16 +49,11 @@ macro_rules! log_event {
        log_event!($ctx, $data1, $msg,)
    };
    ($ctx:expr, $event:expr, $data1:expr, $msg:expr, $($args:expr),* $(,)?) => {
-        let formatted = format!($msg, $($args),*);
-        let formatted_c = std::ffi::CString::new(formatted).unwrap();
-        $ctx.call_cb($event, $data1 as libc::uintptr_t,
-                     formatted_c.as_ptr() as libc::uintptr_t);
-    };
-}
-
-#[macro_export]
-macro_rules! emit_event {
-    ($ctx:expr, $event:expr, $data1:expr, $data2:expr) => {
-        $ctx.call_cb($event, $data1 as libc::uintptr_t, $data2 as libc::uintptr_t);
-    };
+        #[allow(unused_unsafe)]
+        unsafe {
+            let formatted = format!($msg, $($args),*);
+            let formatted_c = std::ffi::CString::new(formatted).unwrap();
+            $ctx.call_cb($event, $data1 as libc::uintptr_t,
+                         formatted_c.as_ptr() as libc::uintptr_t);
+    }};
 }
--- a/src/login_param.rs
+++ b/src/login_param.rs
@@ -1,206 +0,0 @@
-use std::borrow::Cow;
-use std::fmt;
-
-use crate::context::Context;
-use crate::error::Error;
-
-#[derive(Default, Debug)]
-pub struct LoginParam {
-    pub addr: String,
-    pub mail_server: String,
-    pub mail_user: String,
-    pub mail_pw: String,
-    pub mail_port: i32,
-    pub send_server: String,
-    pub send_user: String,
-    pub send_pw: String,
-    pub send_port: i32,
-    pub server_flags: i32,
-}
-
-impl LoginParam {
-    /// Create a new `LoginParam` with default values.
-    pub fn new() -> Self {
-        Default::default()
-    }
-
-    /// Read the login parameters from the database.
-    pub fn from_database(context: &Context, prefix: impl AsRef<str>) -> Self {
-        let prefix = prefix.as_ref();
-        let sql = &context.sql;
-
-        let key = format!("{}addr", prefix);
-        let addr = sql
-            .get_config(context, key)
-            .unwrap_or_default()
-            .trim()
-            .to_string();
-
-        let key = format!("{}mail_server", prefix);
-        let mail_server = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}mail_port", prefix);
-        let mail_port = sql.get_config_int(context, key).unwrap_or_default();
-
-        let key = format!("{}mail_user", prefix);
-        let mail_user = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}mail_pw", prefix);
-        let mail_pw = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}send_server", prefix);
-        let send_server = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}send_port", prefix);
-        let send_port = sql.get_config_int(context, key).unwrap_or_default();
-
-        let key = format!("{}send_user", prefix);
-        let send_user = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}send_pw", prefix);
-        let send_pw = sql.get_config(context, key).unwrap_or_default();
-
-        let key = format!("{}server_flags", prefix);
-        let server_flags = sql.get_config_int(context, key).unwrap_or_default();
-
-        LoginParam {
-            addr: addr.to_string(),
-            mail_server,
-            mail_user,
-            mail_pw,
-            mail_port,
-            send_server,
-            send_user,
-            send_pw,
-            send_port,
-            server_flags,
-        }
-    }
-
-    pub fn addr_str(&self) -> &str {
-        self.addr.as_str()
-    }
-
-    /// Save this loginparam to the database.
-    pub fn save_to_database(
-        &self,
-        context: &Context,
-        prefix: impl AsRef<str>,
-    ) -> Result<(), Error> {
-        let prefix = prefix.as_ref();
-        let sql = &context.sql;
-
-        let key = format!("{}addr", prefix);
-        sql.set_config(context, key, Some(&self.addr))?;
-
-        let key = format!("{}mail_server", prefix);
-        sql.set_config(context, key, Some(&self.mail_server))?;
-
-        let key = format!("{}mail_port", prefix);
-        sql.set_config_int(context, key, self.mail_port)?;
-
-        let key = format!("{}mail_user", prefix);
-        sql.set_config(context, key, Some(&self.mail_user))?;
-
-        let key = format!("{}mail_pw", prefix);
-        sql.set_config(context, key, Some(&self.mail_pw))?;
-
-        let key = format!("{}send_server", prefix);
-        sql.set_config(context, key, Some(&self.send_server))?;
-
-        let key = format!("{}send_port", prefix);
-        sql.set_config_int(context, key, self.send_port)?;
-
-        let key = format!("{}send_user", prefix);
-        sql.set_config(context, key, Some(&self.send_user))?;
-
-        let key = format!("{}send_pw", prefix);
-        sql.set_config(context, key, Some(&self.send_pw))?;
-
-        let key = format!("{}server_flags", prefix);
-        sql.set_config_int(context, key, self.server_flags)?;
-
-        Ok(())
-    }
-}
-
-impl fmt::Display for LoginParam {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let unset = "0";
-        let pw = "***";
-
-        let flags_readable = get_readable_flags(self.server_flags);
-
-        write!(
-            f,
-            "{} {}:{}:{}:{} {}:{}:{}:{} {}",
-            unset_empty(&self.addr),
-            unset_empty(&self.mail_user),
-            if !self.mail_pw.is_empty() { pw } else { unset },
-            unset_empty(&self.mail_server),
-            self.mail_port,
-            unset_empty(&self.send_user),
-            if !self.send_pw.is_empty() { pw } else { unset },
-            unset_empty(&self.send_server),
-            self.send_port,
-            flags_readable,
-        )
-    }
-}
-
-fn unset_empty(s: &String) -> Cow<String> {
-    if s.is_empty() {
-        Cow::Owned("unset".to_string())
-    } else {
-        Cow::Borrowed(s)
-    }
-}
-
-fn get_readable_flags(flags: i32) -> String {
-    let mut res = String::new();
-    for bit in 0..31 {
-        if 0 != flags & 1 << bit {
-            let mut flag_added = 0;
-            if 1 << bit == 0x2 {
-                res += "OAUTH2 ";
-                flag_added = 1;
-            }
-            if 1 << bit == 0x4 {
-                res += "AUTH_NORMAL ";
-                flag_added = 1;
-            }
-            if 1 << bit == 0x100 {
-                res += "IMAP_STARTTLS ";
-                flag_added = 1;
-            }
-            if 1 << bit == 0x200 {
-                res += "IMAP_SSL ";
-                flag_added = 1;
-            }
-            if 1 << bit == 0x400 {
-                res += "IMAP_PLAIN ";
-                flag_added = 1;
-            }
-            if 1 << bit == 0x10000 {
-                res += "SMTP_STARTTLS ";
-                flag_added = 1
-            }
-            if 1 << bit == 0x20000 {
-                res += "SMTP_SSL ";
-                flag_added = 1
-            }
-            if 1 << bit == 0x40000 {
-                res += "SMTP_PLAIN ";
-                flag_added = 1
-            }
-            if 0 == flag_added {
-                res += &format!("{:#0x}", 1 << bit);
-            }
-        }
-    }
-    if res.is_empty() {
-        res += "0";
-    }
-
-    res
-}
--- a/src/message.rs
+++ b/src/message.rs
@@ -38,12 +38,6 @@ pub enum MessageState {
    OutMdnRcvd = 28,
 }

-impl Default for MessageState {
-    fn default() -> Self {
-        MessageState::Undefined
-    }
-}
-
 impl From<MessageState> for LotState {
    fn from(s: MessageState) -> Self {
        use MessageState::*;
@@ -137,7 +131,7 @@ impl Lot {
 /// approx. max. length returned by dc_msg_get_text()
 /// approx. max. length returned by dc_get_msg_info()
 #[derive(Clone)]
-pub struct Message {
+pub struct Message<'a> {
    pub id: u32,
    pub from_id: u32,
    pub to_id: u32,
@@ -150,6 +144,7 @@ pub struct Message {
    pub timestamp_sent: i64,
    pub timestamp_rcvd: i64,
    pub text: Option<String>,
+    pub context: &'a Context,
    pub rfc724_mid: *mut libc::c_char,
    pub in_reply_to: *mut libc::c_char,
    pub server_folder: Option<String>,
@@ -164,6 +159,7 @@ pub struct Message {

 // handle messages
 pub unsafe fn dc_get_msg_info(context: &Context, msg_id: u32) -> *mut libc::c_char {
+    let mut p: *mut libc::c_char;
    let mut ret = String::new();

    let msg = dc_msg_load_from_db(context, msg_id);
@@ -269,7 +265,7 @@ pub unsafe fn dc_get_msg_info(context: &Context, msg_id: u32) -> *mut libc::c_ch
        _ => {}
    }

-    let p = dc_msg_get_file(context, &msg);
+    p = dc_msg_get_file(&msg);
    if !p.is_null() && 0 != *p.offset(0isize) as libc::c_int {
        ret += &format!(
            "\nFile: {}, {}, bytes\n",
@@ -283,7 +279,9 @@ pub unsafe fn dc_get_msg_info(context: &Context, msg_id: u32) -> *mut libc::c_ch
        ret += "Type: ";
        ret += &format!("{}", msg.type_0);
        ret += "\n";
-        ret += &format!("Mimetype: {}\n", &dc_msg_get_filemime(&msg));
+        p = dc_msg_get_filemime(&msg);
+        ret += &format!("Mimetype: {}\n", as_str(p));
+        free(p as *mut libc::c_void);
    }
    let w = msg.param.get_int(Param::Width).unwrap_or_default();
    let h = msg.param.get_int(Param::Height).unwrap_or_default();
@@ -309,11 +307,11 @@ pub unsafe fn dc_get_msg_info(context: &Context, msg_id: u32) -> *mut libc::c_ch
    ret.strdup()
 }

-pub fn dc_msg_new_untyped() -> Message {
-    dc_msg_new(Viewtype::Unknown)
+pub unsafe fn dc_msg_new_untyped<'a>(context: &'a Context) -> Message<'a> {
+    dc_msg_new(context, Viewtype::Unknown)
 }

-pub fn dc_msg_new(viewtype: Viewtype) -> Message {
+pub fn dc_msg_new<'a>(context: &'a Context, viewtype: Viewtype) -> Message<'a> {
    Message {
        id: 0,
        from_id: 0,
@@ -327,6 +325,7 @@ pub fn dc_msg_new(viewtype: Viewtype) -> Message {
        timestamp_sent: 0,
        timestamp_rcvd: 0,
        text: None,
+        context,
        rfc724_mid: std::ptr::null_mut(),
        in_reply_to: std::ptr::null_mut(),
        server_folder: None,
@@ -339,7 +338,7 @@ pub fn dc_msg_new(viewtype: Viewtype) -> Message {
    }
 }

-impl Drop for Message {
+impl<'a> Drop for Message<'a> {
    fn drop(&mut self) {
        unsafe {
            free(self.rfc724_mid.cast());
@@ -348,16 +347,16 @@ impl Drop for Message {
    }
 }

-pub fn dc_msg_get_filemime(msg: &Message) -> String {
+pub unsafe fn dc_msg_get_filemime(msg: &Message) -> *mut libc::c_char {
    if let Some(m) = msg.param.get(Param::MimeType) {
-        return m.to_string();
+        return m.strdup();
    } else if let Some(file) = msg.param.get(Param::File) {
        if let Some((_, mime)) = dc_msg_guess_msgtype_from_suffix(Path::new(file)) {
-            return mime.to_string();
+            return mime.strdup();
        }
    }

-    "application/octet-stream".to_string()
+    "application/octet-stream".strdup()
 }

 pub fn dc_msg_guess_msgtype_from_suffix(path: &Path) -> Option<(Viewtype, &str)> {
@@ -378,11 +377,11 @@ pub fn dc_msg_guess_msgtype_from_suffix(path: &Path) -> Option<(Viewtype, &str)>
    KNOWN.get(extension).map(|x| *x)
 }

-pub unsafe fn dc_msg_get_file(context: &Context, msg: &Message) -> *mut libc::c_char {
+pub unsafe fn dc_msg_get_file(msg: &Message) -> *mut libc::c_char {
    let mut file_abs = ptr::null_mut();

    if let Some(file_rel) = msg.param.get(Param::File) {
-        file_abs = dc_get_abs_path(context, file_rel);
+        file_abs = dc_get_abs_path(msg.context, file_rel);
    }
    if !file_abs.is_null() {
        file_abs
@@ -438,7 +437,7 @@ pub fn dc_msg_get_timestamp(msg: &Message) -> i64 {
    }
 }

-pub fn dc_msg_load_from_db(context: &Context, id: u32) -> Result<Message, Error> {
+pub fn dc_msg_load_from_db<'a>(context: &'a Context, id: u32) -> Result<Message<'a>, Error> {
    context.sql.query_row(
        "SELECT  \
         m.id,rfc724_mid,m.mime_in_reply_to,m.server_folder,m.server_uid,m.move_state,m.chat_id,  \
@@ -449,7 +448,8 @@ pub fn dc_msg_load_from_db(context: &Context, id: u32) -> Result<Message, Error>
        params![id as i32],
        |row| {
            unsafe {
-                let mut msg = dc_msg_new_untyped();
+                let mut msg = dc_msg_new_untyped(context);
+                msg.context = context;
                msg.id = row.get::<_, i32>(0)? as u32;
                msg.rfc724_mid = row.get::<_, String>(1)?.strdup();
                msg.in_reply_to = match row.get::<_, Option<String>>(2)? {
@@ -474,11 +474,12 @@ pub fn dc_msg_load_from_db(context: &Context, id: u32) -> Result<Message, Error>
                    if let Ok(t) = String::from_utf8(buf.to_vec()) {
                        text = t;
                    } else {
-                        warn!(context, "dc_msg_load_from_db: could not get text column as non-lossy utf8 id {}", id);
+                        warn!(context, 0, "dc_msg_load_from_db: could not get text column as non-lossy utf8 id {}", id);
                        text = String::from_utf8_lossy(buf).into_owned();
                    }
                } else {
-                    text = "".to_string();
+                    warn!(context, 0, "dc_msg_load_from_db: could not get text column for id {}", id);
+                    text = "[ Could not read from db ]".to_string();
                }
                msg.text = Some(text);

@@ -576,7 +577,7 @@ pub fn dc_markseen_msgs(context: &Context, msg_ids: *const u32, msg_cnt: usize)
    );

    if msgs.is_err() {
-        warn!(context, "markseen_msgs failed: {:?}", msgs);
+        warn!(context, 0, "markseen_msgs failed: {:?}", msgs);
        return false;
    }
    let mut send_event = false;
@@ -586,7 +587,7 @@ pub fn dc_markseen_msgs(context: &Context, msg_ids: *const u32, msg_cnt: usize)
        if curr_blocked == Blocked::Not {
            if curr_state == MessageState::InFresh || curr_state == MessageState::InNoticed {
                dc_update_msg_state(context, id, MessageState::InSeen);
-                info!(context, "Seen message #{}.", id);
+                info!(context, 0, "Seen message #{}.", id);

                job_add(
                    context,
@@ -640,7 +641,7 @@ pub fn dc_star_msgs(
        .is_ok()
 }

-pub fn dc_get_msg(context: &Context, msg_id: u32) -> Result<Message, Error> {
+pub fn dc_get_msg<'a>(context: &'a Context, msg_id: u32) -> Result<Message<'a>, Error> {
    dc_msg_load_from_db(context, msg_id)
 }

@@ -698,10 +699,11 @@ pub unsafe fn dc_msg_get_filename(msg: &Message) -> *mut libc::c_char {
    }
 }

-pub fn dc_msg_get_filebytes(context: &Context, msg: &Message) -> uint64_t {
+pub unsafe fn dc_msg_get_filebytes(msg: &Message) -> uint64_t {
    if let Some(file) = msg.param.get(Param::File) {
-        return dc_get_filebytes(context, &file);
+        return dc_get_filebytes(msg.context, &file);
    }
+
    0
 }

@@ -726,14 +728,14 @@ pub fn dc_msg_get_showpadlock(msg: &Message) -> libc::c_int {
    0
 }

-pub fn dc_msg_get_summary(context: &Context, msg: &mut Message, chat: Option<&Chat>) -> Lot {
+pub unsafe fn dc_msg_get_summary<'a>(msg: &mut Message<'a>, chat: Option<&Chat<'a>>) -> Lot {
    let mut ret = Lot::new();

    let chat_loaded: Chat;
    let chat = if let Some(chat) = chat {
        chat
    } else {
-        if let Ok(chat) = Chat::load_from_db(context, msg.chat_id) {
+        if let Ok(chat) = Chat::load_from_db(msg.context, msg.chat_id) {
            chat_loaded = chat;
            &chat_loaded
        } else {
@@ -744,18 +746,17 @@ pub fn dc_msg_get_summary(context: &Context, msg: &mut Message, chat: Option<&Ch
    let contact = if msg.from_id != DC_CONTACT_ID_SELF as libc::c_uint
        && ((*chat).typ == Chattype::Group || (*chat).typ == Chattype::VerifiedGroup)
    {
-        Contact::get_by_id(context, msg.from_id).ok()
+        Contact::get_by_id((*chat).context, msg.from_id).ok()
    } else {
        None
    };

-    ret.fill(msg, chat, contact.as_ref(), context);
+    ret.fill(msg, chat, contact.as_ref(), msg.context);

    ret
 }

 pub unsafe fn dc_msg_get_summarytext(
-    context: &Context,
    msg: &mut Message,
    approx_characters: usize,
 ) -> *mut libc::c_char {
@@ -764,7 +765,7 @@ pub unsafe fn dc_msg_get_summarytext(
        msg.text.as_ref(),
        &mut msg.param,
        approx_characters,
-        context,
+        msg.context,
    )
    .strdup()
 }
@@ -895,7 +896,7 @@ pub fn dc_msg_is_setupmessage(msg: &Message) -> bool {
    msg.param.get_int(Param::Cmd) == Some(6)
 }

-pub unsafe fn dc_msg_get_setupcodebegin(context: &Context, msg: &Message) -> *mut libc::c_char {
+pub unsafe fn dc_msg_get_setupcodebegin(msg: &Message) -> *mut libc::c_char {
    let mut filename: *mut libc::c_char = ptr::null_mut();
    let mut buf: *mut libc::c_char = ptr::null_mut();
    let mut buf_bytes: size_t = 0i32 as size_t;
@@ -905,11 +906,11 @@ pub unsafe fn dc_msg_get_setupcodebegin(context: &Context, msg: &Message) -> *mu
    let mut buf_setupcodebegin: *const libc::c_char = ptr::null();
    let mut ret: *mut libc::c_char = ptr::null_mut();
    if dc_msg_is_setupmessage(msg) {
-        filename = dc_msg_get_file(context, msg);
+        filename = dc_msg_get_file(msg);
        if !(filename.is_null() || *filename.offset(0isize) as libc::c_int == 0i32) {
            if !(0
                == dc_read_file(
-                    context,
+                    msg.context,
                    filename,
                    &mut buf as *mut *mut libc::c_char as *mut *mut libc::c_void,
                    &mut buf_bytes,
@@ -974,7 +975,6 @@ pub fn dc_msg_set_duration(msg: &mut Message, duration: libc::c_int) {
 }

 pub fn dc_msg_latefiling_mediasize(
-    context: &Context,
    msg: &mut Message,
    width: libc::c_int,
    height: libc::c_int,
@@ -987,20 +987,20 @@ pub fn dc_msg_latefiling_mediasize(
    if duration > 0 {
        msg.param.set_int(Param::Duration, duration);
    }
-    dc_msg_save_param_to_disk(context, msg);
+    dc_msg_save_param_to_disk(msg);
 }

-pub fn dc_msg_save_param_to_disk(context: &Context, msg: &mut Message) -> bool {
+pub fn dc_msg_save_param_to_disk(msg: &mut Message) -> bool {
    sql::execute(
-        context,
-        &context.sql,
+        msg.context,
+        &msg.context.sql,
        "UPDATE msgs SET param=? WHERE id=?;",
        params![msg.param.to_string(), msg.id as i32],
    )
    .is_ok()
 }

-pub fn dc_msg_new_load(context: &Context, msg_id: u32) -> Result<Message, Error> {
+pub fn dc_msg_new_load<'a>(context: &'a Context, msg_id: u32) -> Result<Message<'a>, Error> {
    dc_msg_load_from_db(context, msg_id)
 }

@@ -1030,23 +1030,25 @@ The value is also used for CC:-summaries */

 // Context functions to work with messages

-pub fn dc_msg_exists(context: &Context, msg_id: u32) -> bool {
-    if msg_id <= DC_CHAT_ID_LAST_SPECIAL {
-        return false;
+pub unsafe fn dc_msg_exists(context: &Context, msg_id: u32) -> libc::c_int {
+    if msg_id <= 9 {
+        return 0;
    }

-    let chat_id: Option<u32> = context.sql.query_row_col(
+    let chat_id: Option<i32> = context.sql.query_row_col(
        context,
        "SELECT chat_id FROM msgs WHERE id=?;",
-        params![msg_id],
+        params![msg_id as i32],
        0,
    );

    if let Some(chat_id) = chat_id {
-        chat_id != DC_CHAT_ID_TRASH
-    } else {
-        false
+        if chat_id != 3 {
+            return 1;
+        }
    }
+
+    0
 }

 pub fn dc_update_msg_move_state(
@@ -1072,7 +1074,7 @@ pub fn dc_set_msg_failed(context: &Context, msg_id: u32, error: Option<impl AsRe
        }
        if let Some(error) = error {
            msg.param.set(Param::Error, error.as_ref());
-            error!(context, "{}", error.as_ref());
+            error!(context, 0, "{}", error.as_ref());
        }

        if sql::execute(
@@ -1201,7 +1203,7 @@ pub fn dc_get_real_msg_cnt(context: &Context) -> libc::c_int {
    ) {
        Ok(res) => res,
        Err(err) => {
-            error!(context, "dc_get_real_msg_cnt() failed. {}", err);
+            error!(context, 0, "dc_get_real_msg_cnt() failed. {}", err);
            0
        }
    }
@@ -1217,7 +1219,7 @@ pub fn dc_get_deaddrop_msg_cnt(context: &Context) -> size_t {
    ) {
        Ok(res) => res as size_t,
        Err(err) => {
-            error!(context, "dc_get_deaddrop_msg_cnt() failed. {}", err);
+            error!(context, 0, "dc_get_deaddrop_msg_cnt() failed. {}", err);
            0
        }
    }
@@ -1232,7 +1234,7 @@ pub fn dc_rfc724_mid_cnt(context: &Context, rfc724_mid: *const libc::c_char) ->
    ) {
        Ok(res) => res,
        Err(err) => {
-            error!(context, "dc_get_rfc724_mid_cnt() failed. {}", err);
+            error!(context, 0, "dc_get_rfc724_mid_cnt() failed. {}", err);
            0
        }
    }
@@ -1286,7 +1288,7 @@ pub fn dc_update_server_uid(
    ) {
        Ok(_) => {}
        Err(err) => {
-            warn!(context, "msg: failed to update server_uid: {}", err);
+            warn!(context, 0, "msg: failed to update server_uid: {}", err);
        }
    }
 }
@@ -1319,7 +1321,7 @@ mod tests {

        let chat = chat::create_by_contact_id(ctx, contact).unwrap();

-        let mut msg = dc_msg_new(Viewtype::Text);
+        let mut msg = dc_msg_new(ctx, Viewtype::Text);

        let msg_id = chat::prepare_msg(ctx, chat, &mut msg).unwrap();

--- a/src/oauth2.rs
+++ b/src/oauth2.rs
@@ -97,7 +97,10 @@ pub fn dc_get_oauth2_access_token(

        let (redirect_uri, token_url, update_redirect_uri_on_success) =
            if refresh_token.is_none() || refresh_token_for != code.as_ref() {
-                info!(context, "Generate OAuth2 refresh_token and access_token...",);
+                info!(
+                    context,
+                    0, "Generate OAuth2 refresh_token and access_token...",
+                );
                (
                    context
                        .sql
@@ -109,7 +112,7 @@ pub fn dc_get_oauth2_access_token(
            } else {
                info!(
                    context,
-                    "Regenerate OAuth2 access_token by refresh_token...",
+                    0, "Regenerate OAuth2 access_token by refresh_token...",
                );
                (
                    context
@@ -131,7 +134,7 @@ pub fn dc_get_oauth2_access_token(
        if response.is_err() {
            warn!(
                context,
-                "Error calling OAuth2 at {}: {:?}", token_url, response
+                0, "Error calling OAuth2 at {}: {:?}", token_url, response
            );
            return None;
        }
@@ -139,6 +142,7 @@ pub fn dc_get_oauth2_access_token(
        if !response.status().is_success() {
            warn!(
                context,
+                0,
                "Error calling OAuth2 at {}: {:?}",
                token_url,
                response.status()
@@ -150,7 +154,7 @@ pub fn dc_get_oauth2_access_token(
        if parsed.is_err() {
            warn!(
                context,
-                "Failed to parse OAuth2 JSON response from {}: error: {:?}", token_url, parsed
+                0, "Failed to parse OAuth2 JSON response from {}: error: {:?}", token_url, parsed
            );
            return None;
        }
@@ -191,12 +195,12 @@ pub fn dc_get_oauth2_access_token(
                    .ok();
            }
        } else {
-            warn!(context, "Failed to find OAuth2 access token");
+            warn!(context, 0, "Failed to find OAuth2 access token");
        }

        response.access_token
    } else {
-        warn!(context, "Internal OAuth2 error: 2");
+        warn!(context, 0, "Internal OAuth2 error: 2");

        None
    }
@@ -264,12 +268,17 @@ impl Oauth2 {
        // }
        let response = reqwest::Client::new().get(&userinfo_url).send();
        if response.is_err() {
-            warn!(context, "Error getting userinfo: {:?}", response);
+            warn!(context, 0, "Error getting userinfo: {:?}", response);
            return None;
        }
        let mut response = response.unwrap();
        if !response.status().is_success() {
-            warn!(context, "Error getting userinfo: {:?}", response.status());
+            warn!(
+                context,
+                0,
+                "Error getting userinfo: {:?}",
+                response.status()
+            );
            return None;
        }

@@ -277,19 +286,19 @@ impl Oauth2 {
        if parsed.is_err() {
            warn!(
                context,
-                "Failed to parse userinfo JSON response: {:?}", parsed
+                0, "Failed to parse userinfo JSON response: {:?}", parsed
            );
            return None;
        }
        if let Ok(response) = parsed {
            let addr = response.get("email");
            if addr.is_none() {
-                warn!(context, "E-mail missing in userinfo.");
+                warn!(context, 0, "E-mail missing in userinfo.");
            }

            addr.map(|addr| addr.to_string())
        } else {
-            warn!(context, "Failed to parse userinfo.");
+            warn!(context, 0, "Failed to parse userinfo.");
            None
        }
    }
--- a/src/peerstate.rs
+++ b/src/peerstate.rs
@@ -178,11 +178,8 @@ impl<'a> Peerstate<'a> {
                     OR gossip_key_fingerprint=? COLLATE NOCASE  \
                     ORDER BY public_key_fingerprint=? DESC;";

-        Self::from_stmt(
-            context,
-            query,
-            params![fingerprint, fingerprint, fingerprint],
-        )
+        let fp = fingerprint.as_bytes();
+        Self::from_stmt(context, query, params![fp, fp, fp])
    }

    fn from_stmt<P>(context: &'a Context, query: &str, params: P) -> Option<Self>
@@ -526,10 +523,6 @@ mod tests {
        // clear to_save, as that is not persissted
        peerstate.to_save = None;
        assert_eq!(peerstate, peerstate_new);
-        let peerstate_new2 =
-            Peerstate::from_fingerprint(&ctx.ctx, &ctx.ctx.sql, &pub_key.fingerprint())
-                .expect("failed to load peerstate from db");
-        assert_eq!(peerstate, peerstate_new2);
    }

    #[test]
--- a/src/pgp.rs
+++ b/src/pgp.rs
@@ -1,5 +1,6 @@
 use std::collections::HashSet;
 use std::convert::TryInto;
+use std::ffi::CStr;
 use std::io::Cursor;
 use std::ptr;

@@ -187,11 +188,15 @@ pub fn dc_pgp_create_keypair(addr: impl AsRef<str>) -> Option<(Key, Key)> {
 }

 pub fn dc_pgp_pk_encrypt(
-    plain: &[u8],
+    plain_text: *const libc::c_void,
+    plain_bytes: size_t,
    public_keys_for_encryption: &Keyring,
    private_key_for_signing: Option<&Key>,
 ) -> Option<String> {
-    let lit_msg = Message::new_literal_bytes("", plain);
+    assert!(!plain_text.is_null() && !plain_bytes > 0, "invalid input");
+
+    let bytes = unsafe { std::slice::from_raw_parts(plain_text as *const u8, plain_bytes) };
+    let lit_msg = Message::new_literal_bytes("", bytes);
    let pkeys: Vec<&SignedPublicKey> = public_keys_for_encryption
        .keys()
        .into_iter()
@@ -222,11 +227,16 @@ pub fn dc_pgp_pk_encrypt(
 }

 pub fn dc_pgp_pk_decrypt(
-    ctext: &[u8],
+    ctext: *const libc::c_void,
+    ctext_bytes: size_t,
    private_keys_for_decryption: &Keyring,
    public_keys_for_validation: &Keyring,
    ret_signature_fingerprints: Option<&mut HashSet<String>>,
 ) -> Option<Vec<u8>> {
+    assert!(!ctext.is_null() && ctext_bytes > 0, "invalid input");
+
+    let ctext = unsafe { std::slice::from_raw_parts(ctext as *const u8, ctext_bytes) };
+
    // TODO: proper error handling
    if let Ok((msg, _)) = Message::from_armor_single(Cursor::new(ctext)) {
        let skeys: Vec<&SignedSecretKey> = private_keys_for_decryption
@@ -273,25 +283,44 @@ pub fn dc_pgp_pk_decrypt(
 }

 /// Symmetric encryption.
-pub fn dc_pgp_symm_encrypt(passphrase: &str, plain: &[u8]) -> Option<String> {
+pub fn dc_pgp_symm_encrypt(
+    passphrase: *const libc::c_char,
+    plain: *const libc::c_void,
+    plain_bytes: size_t,
+) -> Option<String> {
+    assert!(!passphrase.is_null(), "invalid passphrase");
+    assert!(!plain.is_null() && !plain_bytes > 0, "invalid input");
+
+    let pw = unsafe { CStr::from_ptr(passphrase).to_str().unwrap() };
+    let bytes = unsafe { std::slice::from_raw_parts(plain as *const u8, plain_bytes) };
+
    let mut rng = thread_rng();
-    let lit_msg = Message::new_literal_bytes("", plain);
+    let lit_msg = Message::new_literal_bytes("", bytes);

    let s2k = StringToKey::new_default(&mut rng);
-    let msg =
-        lit_msg.encrypt_with_password(&mut rng, s2k, Default::default(), || passphrase.into());
+    let msg = lit_msg.encrypt_with_password(&mut rng, s2k, Default::default(), || pw.into());

    msg.and_then(|msg| msg.to_armored_string(None)).ok()
 }

 /// Symmetric decryption.
-pub fn dc_pgp_symm_decrypt(passphrase: &str, ctext: &[u8]) -> Option<Vec<u8>> {
-    let enc_msg = Message::from_bytes(Cursor::new(ctext));
+pub fn dc_pgp_symm_decrypt(
+    passphrase: *const libc::c_char,
+    ctext: *const libc::c_void,
+    ctext_bytes: size_t,
+) -> Option<Vec<u8>> {
+    assert!(!passphrase.is_null(), "invalid passphrase");
+    assert!(!ctext.is_null() && !ctext_bytes > 0, "invalid input");
+
+    let pw = unsafe { CStr::from_ptr(passphrase).to_str().unwrap() };
+    let bytes = unsafe { std::slice::from_raw_parts(ctext as *const u8, ctext_bytes) };
+
+    let enc_msg = Message::from_bytes(Cursor::new(bytes));

    enc_msg
        .and_then(|msg| {
            let mut decryptor = msg
-                .decrypt_with_password(|| passphrase.into())
+                .decrypt_with_password(|| pw.into())
                .expect("failed decryption");
            decryptor.next().expect("no message")
        })
--- a/src/qr.rs
+++ b/src/qr.rs
@@ -37,7 +37,7 @@ impl Into<Lot> for Error {
 pub fn check_qr(context: &Context, qr: impl AsRef<str>) -> Lot {
    let qr = qr.as_ref();

-    info!(context, "Scanned QR code: {}", qr);
+    info!(context, 0, "Scanned QR code: {}", qr);

    if qr.starts_with(OPENPGP4FPR_SCHEME) {
        decode_openpgp(context, qr)
--- a/src/securejoin.rs
+++ b/src/securejoin.rs
@@ -1,778 +0,0 @@
-use mmime::mailimf_types::*;
-use percent_encoding::{utf8_percent_encode, AsciiSet, NON_ALPHANUMERIC};
-use std::ptr;
-
-use crate::aheader::EncryptPreference;
-use crate::chat::{self, Chat};
-use crate::configure::*;
-use crate::constants::*;
-use crate::contact::*;
-use crate::context::Context;
-use crate::dc_mimeparser::*;
-use crate::dc_tools::*;
-use crate::e2ee::*;
-use crate::error::Error;
-use crate::key::*;
-use crate::lot::LotState;
-use crate::message::*;
-use crate::param::*;
-use crate::peerstate::*;
-use crate::qr::check_qr;
-use crate::stock::StockMessage;
-use crate::token;
-use crate::types::*;
-
-pub const NON_ALPHANUMERIC_WITHOUT_DOT: &AsciiSet = &NON_ALPHANUMERIC.remove(b'.');
-
-macro_rules! progress {
-    ($context:tt, $event:expr, $contact_id:expr, $progress:expr) => {
-        assert!(
-            $progress >= 0 && $progress <= 1000,
-            "value in range 0..1000 expected with: 0=error, 1..999=progress, 1000=success"
-        );
-        $context.call_cb($event, $contact_id as uintptr_t, $progress as uintptr_t);
-    };
-}
-
-macro_rules! joiner_progress {
-    ($context:tt, $contact_id:expr, $progress:expr) => {
-        progress!(
-            $context,
-            Event::SECUREJOIN_JOINER_PROGRESS,
-            $contact_id,
-            $progress
-        );
-    };
-}
-
-macro_rules! inviter_progress {
-    ($context:tt, $contact_id:expr, $progress:expr) => {
-        progress!(
-            $context,
-            Event::SECUREJOIN_INVITER_PROGRESS,
-            $contact_id,
-            $progress
-        );
-    };
-}
-
-macro_rules! get_qr_attr {
-    ($context:tt, $attr:ident) => {
-        $context
-            .bob
-            .read()
-            .unwrap()
-            .qr_scan
-            .as_ref()
-            .unwrap()
-            .$attr
-            .as_ref()
-            .unwrap()
-    };
-}
-
-pub fn dc_get_securejoin_qr(context: &Context, group_chat_id: uint32_t) -> Option<String> {
-    /* =========================================================
-    ====             Alice - the inviter side            ====
-    ====   Step 1 in "Setup verified contact" protocol   ====
-    ========================================================= */
-
-    let fingerprint: String;
-
-    ensure_secret_key_exists(context).ok();
-    let invitenumber = token::lookup_or_new(context, token::Namespace::InviteNumber, group_chat_id);
-    let auth = token::lookup_or_new(context, token::Namespace::Auth, group_chat_id);
-    let self_addr = match context.sql.get_config(context, "configured_addr") {
-        Some(addr) => addr,
-        None => {
-            error!(context, "Not configured, cannot generate QR code.",);
-            return None;
-        }
-    };
-
-    let self_name = context
-        .sql
-        .get_config(context, "displayname")
-        .unwrap_or_default();
-
-    fingerprint = match get_self_fingerprint(context) {
-        Some(fp) => fp,
-        None => {
-            return None;
-        }
-    };
-
-    let self_addr_urlencoded =
-        utf8_percent_encode(&self_addr, NON_ALPHANUMERIC_WITHOUT_DOT).to_string();
-    let self_name_urlencoded =
-        utf8_percent_encode(&self_name, NON_ALPHANUMERIC_WITHOUT_DOT).to_string();
-
-    let qr = if 0 != group_chat_id {
-        if let Ok(chat) = Chat::load_from_db(context, group_chat_id) {
-            let group_name = chat.get_name();
-            let group_name_urlencoded =
-                utf8_percent_encode(&group_name, NON_ALPHANUMERIC).to_string();
-
-            Some(format!(
-                "OPENPGP4FPR:{}#a={}&g={}&x={}&i={}&s={}",
-                fingerprint,
-                self_addr_urlencoded,
-                &group_name_urlencoded,
-                &chat.grpid,
-                &invitenumber,
-                &auth,
-            ))
-        } else {
-            error!(context, "Cannot get QR-code for chat-id {}", group_chat_id,);
-            return None;
-        }
-    } else {
-        Some(format!(
-            "OPENPGP4FPR:{}#a={}&n={}&i={}&s={}",
-            fingerprint, self_addr_urlencoded, self_name_urlencoded, &invitenumber, &auth,
-        ))
-    };
-
-    info!(context, "Generated QR code: {}", qr.as_ref().unwrap());
-
-    qr
-}
-
-fn get_self_fingerprint(context: &Context) -> Option<String> {
-    if let Some(self_addr) = context.sql.get_config(context, "configured_addr") {
-        if let Some(key) = Key::from_self_public(context, self_addr, &context.sql) {
-            return Some(key.fingerprint());
-        }
-    }
-    None
-}
-
-pub fn dc_join_securejoin(context: &Context, qr: &str) -> uint32_t {
-    let cleanup =
-        |context: &Context, contact_chat_id: u32, ongoing_allocated: bool, join_vg: bool| {
-            let mut bob = context.bob.write().unwrap();
-            bob.expects = 0;
-            let ret_chat_id = if bob.status == DC_BOB_SUCCESS {
-                if join_vg {
-                    chat::get_chat_id_by_grpid(
-                        context,
-                        bob.qr_scan.as_ref().unwrap().text2.as_ref().unwrap(),
-                    )
-                    .0
-                } else {
-                    contact_chat_id
-                }
-            } else {
-                0
-            };
-            bob.qr_scan = None;
-
-            if ongoing_allocated {
-                dc_free_ongoing(context);
-            }
-            ret_chat_id as uint32_t
-        };
-    /* ==========================================================
-    ====             Bob - the joiner's side             =====
-    ====   Step 2 in "Setup verified contact" protocol   =====
-    ========================================================== */
-    let mut contact_chat_id: uint32_t = 0;
-    let mut join_vg: bool = false;
-
-    info!(context, "Requesting secure-join ...",);
-    ensure_secret_key_exists(context).ok();
-    if !dc_alloc_ongoing(context) {
-        return cleanup(&context, contact_chat_id, false, join_vg);
-    }
-    let qr_scan = check_qr(context, &qr);
-    if qr_scan.state != LotState::QrAskVerifyContact && qr_scan.state != LotState::QrAskVerifyGroup
-    {
-        error!(context, "Unknown QR code.",);
-        return cleanup(&context, contact_chat_id, true, join_vg);
-    }
-    contact_chat_id = chat::create_by_contact_id(context, qr_scan.id).unwrap_or_default();
-    if contact_chat_id == 0 {
-        error!(context, "Unknown contact.",);
-        return cleanup(&context, contact_chat_id, true, join_vg);
-    }
-    if check_exit(context) {
-        return cleanup(&context, contact_chat_id, true, join_vg);
-    }
-    join_vg = qr_scan.get_state() == LotState::QrAskVerifyGroup;
-    {
-        let mut bob = context.bob.write().unwrap();
-        bob.status = 0;
-        bob.qr_scan = Some(qr_scan);
-    }
-    if fingerprint_equals_sender(
-        context,
-        context
-            .bob
-            .read()
-            .unwrap()
-            .qr_scan
-            .as_ref()
-            .unwrap()
-            .fingerprint
-            .as_ref()
-            .unwrap(),
-        contact_chat_id,
-    ) {
-        info!(context, "Taking protocol shortcut.");
-        context.bob.write().unwrap().expects = DC_VC_CONTACT_CONFIRM;
-        joiner_progress!(context, chat_id_2_contact_id(context, contact_chat_id), 400);
-        let own_fingerprint = get_self_fingerprint(context).unwrap();
-        send_handshake_msg(
-            context,
-            contact_chat_id,
-            if join_vg {
-                "vg-request-with-auth"
-            } else {
-                "vc-request-with-auth"
-            },
-            get_qr_attr!(context, auth).to_string(),
-            Some(own_fingerprint),
-            if join_vg {
-                get_qr_attr!(context, text2).to_string()
-            } else {
-                "".to_string()
-            },
-        );
-    } else {
-        context.bob.write().unwrap().expects = DC_VC_AUTH_REQUIRED;
-        send_handshake_msg(
-            context,
-            contact_chat_id,
-            if join_vg { "vg-request" } else { "vc-request" },
-            get_qr_attr!(context, invitenumber),
-            None,
-            "",
-        );
-    }
-
-    // Bob -> Alice
-    while !check_exit(&context) {
-        std::thread::sleep(std::time::Duration::new(0, 3_000_000));
-    }
-    cleanup(&context, contact_chat_id, true, join_vg)
-}
-
-fn check_exit(context: &Context) -> bool {
-    context
-        .running_state
-        .clone()
-        .read()
-        .unwrap()
-        .shall_stop_ongoing
-}
-
-fn send_handshake_msg(
-    context: &Context,
-    contact_chat_id: uint32_t,
-    step: &str,
-    param2: impl AsRef<str>,
-    fingerprint: Option<String>,
-    grpid: impl AsRef<str>,
-) {
-    let mut msg = dc_msg_new_untyped();
-    msg.type_0 = Viewtype::Text;
-    msg.text = Some(format!("Secure-Join: {}", step));
-    msg.hidden = true;
-    msg.param.set_int(Param::Cmd, 7);
-    if step.is_empty() {
-        msg.param.remove(Param::Arg);
-    } else {
-        msg.param.set(Param::Arg, step);
-    }
-    if !param2.as_ref().is_empty() {
-        msg.param.set(Param::Arg2, param2);
-    }
-    if let Some(fp) = fingerprint {
-        msg.param.set(Param::Arg3, fp);
-    }
-    if !grpid.as_ref().is_empty() {
-        msg.param.set(Param::Arg4, grpid.as_ref());
-    }
-    if step == "vg-request" || step == "vc-request" {
-        msg.param.set_int(
-            Param::ForcePlaintext,
-            ForcePlaintext::AddAutocryptHeader as i32,
-        );
-    } else {
-        msg.param.set_int(Param::GuranteeE2ee, 1);
-    }
-    // TODO. handle cleanup on error
-    chat::send_msg(context, contact_chat_id, &mut msg).unwrap();
-}
-
-fn chat_id_2_contact_id(context: &Context, contact_chat_id: uint32_t) -> uint32_t {
-    let contacts = chat::get_chat_contacts(context, contact_chat_id);
-    if contacts.len() == 1 {
-        contacts[0]
-    } else {
-        0
-    }
-}
-
-fn fingerprint_equals_sender(
-    context: &Context,
-    fingerprint: impl AsRef<str>,
-    contact_chat_id: u32,
-) -> bool {
-    let contacts = chat::get_chat_contacts(context, contact_chat_id);
-
-    if contacts.len() == 1 {
-        if let Ok(contact) = Contact::load_from_db(context, contacts[0]) {
-            if let Some(peerstate) = Peerstate::from_addr(context, &context.sql, contact.get_addr())
-            {
-                let fingerprint_normalized = dc_normalize_fingerprint(fingerprint.as_ref());
-                if peerstate.public_key_fingerprint.is_some()
-                    && &fingerprint_normalized == peerstate.public_key_fingerprint.as_ref().unwrap()
-                {
-                    return true;
-                }
-            }
-        }
-    }
-    false
-}
-
-/* library private: secure-join */
-pub fn handle_securejoin_handshake(
-    context: &Context,
-    mimeparser: &dc_mimeparser_t,
-    contact_id: uint32_t,
-) -> libc::c_int {
-    let own_fingerprint: String;
-
-    if contact_id <= DC_CONTACT_ID_LAST_SPECIAL {
-        return 0;
-    }
-    let step = match lookup_field(mimeparser, "Secure-Join") {
-        Some(s) => s,
-        None => {
-            return 0;
-        }
-    };
-    info!(
-        context,
-        ">>>>>>>>>>>>>>>>>>>>>>>>> secure-join message \'{}\' received", step,
-    );
-    let (contact_chat_id, contact_chat_id_blocked) =
-        chat::create_or_lookup_by_contact_id(context, contact_id, Blocked::Not).unwrap_or_default();
-
-    if contact_chat_id_blocked != Blocked::Not {
-        chat::unblock(context, contact_chat_id);
-    }
-    let mut ret: libc::c_int = DC_HANDSHAKE_STOP_NORMAL_PROCESSING;
-    let join_vg = step.starts_with("vg-");
-
-    match step.as_str() {
-        "vg-request" | "vc-request" => {
-            /* =========================================================
-            ====             Alice - the inviter side            ====
-            ====   Step 3 in "Setup verified contact" protocol   ====
-            ========================================================= */
-            // this message may be unencrypted (Bob, the joinder and the sender, might not have Alice's key yet)
-            // it just ensures, we have Bobs key now. If we do _not_ have the key because eg. MitM has removed it,
-            // send_message() will fail with the error "End-to-end-encryption unavailable unexpectedly.", so, there is no additional check needed here.
-            // verify that the `Secure-Join-Invitenumber:`-header matches invitenumber written to the QR code
-            let invitenumber = match lookup_field(mimeparser, "Secure-Join-Invitenumber") {
-                Some(n) => n,
-                None => {
-                    warn!(context, "Secure-join denied (invitenumber missing).",);
-                    return ret;
-                }
-            };
-            if !token::exists(context, token::Namespace::InviteNumber, &invitenumber) {
-                warn!(context, "Secure-join denied (bad invitenumber).",);
-                return ret;
-            }
-            info!(context, "Secure-join requested.",);
-
-            inviter_progress!(context, contact_id, 300);
-            send_handshake_msg(
-                context,
-                contact_chat_id,
-                &format!("{}-auth-required", &step[..2]),
-                "",
-                None,
-                "",
-            );
-        }
-        "vg-auth-required" | "vc-auth-required" => {
-            let cond = {
-                let bob = context.bob.read().unwrap();
-                let scan = bob.qr_scan.as_ref();
-                scan.is_none()
-                    || bob.expects != DC_VC_AUTH_REQUIRED
-                    || join_vg && scan.unwrap().state != LotState::QrAskVerifyGroup
-            };
-
-            if cond {
-                warn!(context, "auth-required message out of sync.",);
-                // no error, just aborted somehow or a mail from another handshake
-                return ret;
-            }
-            let scanned_fingerprint_of_alice = get_qr_attr!(context, fingerprint).to_string();
-            let auth = get_qr_attr!(context, auth).to_string();
-
-            if !encrypted_and_signed(mimeparser, &scanned_fingerprint_of_alice) {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    if mimeparser.e2ee_helper.encrypted {
-                        "No valid signature."
-                    } else {
-                        "Not encrypted."
-                    },
-                );
-                end_bobs_joining(context, DC_BOB_ERROR);
-                return ret;
-            }
-            if !fingerprint_equals_sender(context, &scanned_fingerprint_of_alice, contact_chat_id) {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Fingerprint mismatch on joiner-side.",
-                );
-                end_bobs_joining(context, DC_BOB_ERROR);
-                return ret;
-            }
-            info!(context, "Fingerprint verified.",);
-            own_fingerprint = get_self_fingerprint(context).unwrap();
-            joiner_progress!(context, contact_id, 400);
-            context.bob.write().unwrap().expects = DC_VC_CONTACT_CONFIRM;
-
-            send_handshake_msg(
-                context,
-                contact_chat_id,
-                &format!("{}-request-with-auth", &step[..2]),
-                auth,
-                Some(own_fingerprint),
-                if join_vg {
-                    get_qr_attr!(context, text2).to_string()
-                } else {
-                    "".to_string()
-                },
-            );
-        }
-        "vg-request-with-auth" | "vc-request-with-auth" => {
-            /* ============================================================
-            ====              Alice - the inviter side              ====
-            ====   Steps 5+6 in "Setup verified contact" protocol   ====
-            ====  Step 6 in "Out-of-band verified groups" protocol  ====
-            ============================================================ */
-            // verify that Secure-Join-Fingerprint:-header matches the fingerprint of Bob
-            let fingerprint = match lookup_field(mimeparser, "Secure-Join-Fingerprint") {
-                Some(fp) => fp,
-                None => {
-                    could_not_establish_secure_connection(
-                        context,
-                        contact_chat_id,
-                        "Fingerprint not provided.",
-                    );
-                    return ret;
-                }
-            };
-            if !encrypted_and_signed(mimeparser, &fingerprint) {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Auth not encrypted.",
-                );
-                return ret;
-            }
-            if !fingerprint_equals_sender(context, &fingerprint, contact_chat_id) {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Fingerprint mismatch on inviter-side.",
-                );
-                return ret;
-            }
-            info!(context, "Fingerprint verified.",);
-            // verify that the `Secure-Join-Auth:`-header matches the secret written to the QR code
-            let auth_0 = match lookup_field(mimeparser, "Secure-Join-Auth") {
-                Some(auth) => auth,
-                None => {
-                    could_not_establish_secure_connection(
-                        context,
-                        contact_chat_id,
-                        "Auth not provided.",
-                    );
-                    return ret;
-                }
-            };
-            if !token::exists(context, token::Namespace::Auth, &auth_0) {
-                could_not_establish_secure_connection(context, contact_chat_id, "Auth invalid.");
-                return ret;
-            }
-            if mark_peer_as_verified(context, fingerprint).is_err() {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Fingerprint mismatch on inviter-side.",
-                );
-                return ret;
-            }
-            Contact::scaleup_origin_by_id(context, contact_id, Origin::SecurejoinInvited);
-            info!(context, "Auth verified.",);
-            secure_connection_established(context, contact_chat_id);
-            emit_event!(context, Event::CONTACTS_CHANGED, contact_id, 0);
-            inviter_progress!(context, contact_id, 600);
-            if join_vg {
-                let field_grpid = lookup_field(mimeparser, "Secure-Join-Group").unwrap_or_default();
-                let (group_chat_id, _, _) = chat::get_chat_id_by_grpid(context, &field_grpid);
-                if group_chat_id == 0 {
-                    error!(context, "Chat {} not found.", &field_grpid);
-                    return ret;
-                } else {
-                    chat::add_contact_to_chat_ex(context, group_chat_id, contact_id, 0x1i32);
-                }
-            } else {
-                send_handshake_msg(context, contact_chat_id, "vc-contact-confirm", "", None, "");
-                inviter_progress!(context, contact_id, 1000);
-            }
-        }
-        "vg-member-added" | "vc-contact-confirm" => {
-            if join_vg {
-                ret = DC_HANDSHAKE_CONTINUE_NORMAL_PROCESSING;
-            }
-            if context.bob.read().unwrap().expects != DC_VC_CONTACT_CONFIRM {
-                info!(context, "Message belongs to a different handshake.",);
-                return ret;
-            }
-            let cond = {
-                let bob = context.bob.read().unwrap();
-                let scan = bob.qr_scan.as_ref();
-                scan.is_none() || join_vg && scan.unwrap().state != LotState::QrAskVerifyGroup
-            };
-            if cond {
-                warn!(
-                    context,
-                    "Message out of sync or belongs to a different handshake.",
-                );
-                return ret;
-            }
-            let scanned_fingerprint_of_alice = get_qr_attr!(context, fingerprint).to_string();
-
-            let vg_expect_encrypted = if join_vg {
-                let group_id = get_qr_attr!(context, text2).to_string();
-                let (_, is_verified_group, _) = chat::get_chat_id_by_grpid(context, group_id);
-                // when joining a non-verified group
-                // the vg-member-added message may be unencrypted
-                // when not all group members have keys or prefer encryption.
-                // So only expect encryption if this is a verified group
-                is_verified_group
-            } else {
-                // setup contact is always encrypted
-                true
-            };
-            if vg_expect_encrypted
-                && !encrypted_and_signed(mimeparser, &scanned_fingerprint_of_alice)
-            {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Contact confirm message not encrypted.",
-                );
-                end_bobs_joining(context, DC_BOB_ERROR);
-                return ret;
-            }
-
-            if mark_peer_as_verified(context, &scanned_fingerprint_of_alice).is_err() {
-                could_not_establish_secure_connection(
-                    context,
-                    contact_chat_id,
-                    "Fingerprint mismatch on joiner-side.",
-                );
-                return ret;
-            }
-            Contact::scaleup_origin_by_id(context, contact_id, Origin::SecurejoinJoined);
-            emit_event!(context, Event::CONTACTS_CHANGED, 0, 0);
-            let cg_member_added =
-                lookup_field(mimeparser, "Chat-Group-Member-Added").unwrap_or_default();
-            if join_vg && !addr_equals_self(context, cg_member_added) {
-                info!(context, "Message belongs to a different handshake (scaled up contact anyway to allow creation of group).");
-                return ret;
-            }
-            secure_connection_established(context, contact_chat_id);
-            context.bob.write().unwrap().expects = 0;
-            if join_vg {
-                send_handshake_msg(
-                    context,
-                    contact_chat_id,
-                    "vg-member-added-received",
-                    "",
-                    None,
-                    "",
-                );
-            }
-            end_bobs_joining(context, DC_BOB_SUCCESS);
-        }
-        "vg-member-added-received" => {
-            /* ============================================================
-            ====              Alice - the inviter side              ====
-            ====  Step 8 in "Out-of-band verified groups" protocol  ====
-            ============================================================ */
-            if let Ok(contact) = Contact::get_by_id(context, contact_id) {
-                if contact.is_verified(context) == VerifiedStatus::Unverified {
-                    warn!(context, "vg-member-added-received invalid.",);
-                    return ret;
-                }
-                inviter_progress!(context, contact_id, 800);
-                inviter_progress!(context, contact_id, 1000);
-            } else {
-                warn!(context, "vg-member-added-received invalid.",);
-                return ret;
-            }
-        }
-        _ => {
-            warn!(context, "invalid step: {}", step);
-        }
-    }
-    if ret == DC_HANDSHAKE_STOP_NORMAL_PROCESSING {
-        ret |= DC_HANDSHAKE_ADD_DELETE_JOB;
-    }
-    ret
-}
-
-fn end_bobs_joining(context: &Context, status: libc::c_int) {
-    context.bob.write().unwrap().status = status;
-    dc_stop_ongoing_process(context);
-}
-
-fn secure_connection_established(context: &Context, contact_chat_id: uint32_t) {
-    let contact_id: uint32_t = chat_id_2_contact_id(context, contact_chat_id);
-    let contact = Contact::get_by_id(context, contact_id);
-    let addr = if let Ok(ref contact) = contact {
-        contact.get_addr()
-    } else {
-        "?"
-    };
-    let msg = context.stock_string_repl_str(StockMessage::ContactVerified, addr);
-    chat::add_device_msg(context, contact_chat_id, msg);
-    emit_event!(context, Event::CHAT_MODIFIED, contact_chat_id, 0);
-}
-
-fn lookup_field(mimeparser: &dc_mimeparser_t, key: &str) -> Option<String> {
-    let field: *mut mailimf_field = dc_mimeparser_lookup_field(mimeparser, key);
-    unsafe {
-        let mut value: *const libc::c_char = ptr::null();
-        if field.is_null()
-            || (*field).fld_type != MAILIMF_FIELD_OPTIONAL_FIELD as libc::c_int
-            || (*field).fld_data.fld_optional_field.is_null()
-            || {
-                value = (*(*field).fld_data.fld_optional_field).fld_value;
-                value.is_null()
-            }
-        {
-            return None;
-        }
-        Some(as_str(value).to_string())
-    }
-}
-
-fn could_not_establish_secure_connection(
-    context: &Context,
-    contact_chat_id: uint32_t,
-    details: &str,
-) {
-    let contact_id = chat_id_2_contact_id(context, contact_chat_id);
-    let contact = Contact::get_by_id(context, contact_id);
-    let msg = context.stock_string_repl_str(
-        StockMessage::ContactNotVerified,
-        if let Ok(ref contact) = contact {
-            contact.get_addr()
-        } else {
-            "?"
-        },
-    );
-
-    chat::add_device_msg(context, contact_chat_id, &msg);
-    error!(context, "{} ({})", &msg, details);
-}
-
-fn mark_peer_as_verified(context: &Context, fingerprint: impl AsRef<str>) -> Result<(), Error> {
-    if let Some(ref mut peerstate) =
-        Peerstate::from_fingerprint(context, &context.sql, fingerprint.as_ref())
-    {
-        if peerstate.set_verified(1, fingerprint.as_ref(), 2) {
-            peerstate.prefer_encrypt = EncryptPreference::Mutual;
-            peerstate.to_save = Some(ToSave::All);
-            peerstate.save_to_db(&context.sql, false);
-            return Ok(());
-        }
-    }
-    bail!(
-        "could not mark peer as verified for fingerprint {}",
-        fingerprint.as_ref()
-    );
-}
-
-/* ******************************************************************************
- * Tools: Misc.
- ******************************************************************************/
-
-fn encrypted_and_signed(
-    mimeparser: &dc_mimeparser_t,
-    expected_fingerprint: impl AsRef<str>,
-) -> bool {
-    if !mimeparser.e2ee_helper.encrypted {
-        warn!(mimeparser.context, "Message not encrypted.",);
-        false
-    } else if mimeparser.e2ee_helper.signatures.len() <= 0 {
-        warn!(mimeparser.context, "Message not signed.",);
-        false
-    } else if expected_fingerprint.as_ref().is_empty() {
-        warn!(mimeparser.context, "Fingerprint for comparison missing.",);
-        false
-    } else if !mimeparser
-        .e2ee_helper
-        .signatures
-        .contains(expected_fingerprint.as_ref())
-    {
-        warn!(
-            mimeparser.context,
-            "Message does not match expected fingerprint {}.",
-            expected_fingerprint.as_ref(),
-        );
-        false
-    } else {
-        true
-    }
-}
-
-pub fn handle_degrade_event(context: &Context, peerstate: &Peerstate) {
-    // - we do not issue an warning for DC_DE_ENCRYPTION_PAUSED as this is quite normal
-    // - currently, we do not issue an extra warning for DC_DE_VERIFICATION_LOST - this always comes
-    //   together with DC_DE_FINGERPRINT_CHANGED which is logged, the idea is not to bother
-    //   with things they cannot fix, so the user is just kicked from the verified group
-    //   (and he will know this and can fix this)
-    if Some(DegradeEvent::FingerprintChanged) == peerstate.degrade_event {
-        let contact_id: i32 = context
-            .sql
-            .query_row_col(
-                context,
-                "SELECT id FROM contacts WHERE addr=?;",
-                params![&peerstate.addr],
-                0,
-            )
-            .unwrap_or_default();
-        if contact_id > 0 {
-            let (contact_chat_id, _) =
-                chat::create_or_lookup_by_contact_id(context, contact_id as u32, Blocked::Deaddrop)
-                    .unwrap_or_default();
-
-            let peeraddr: &str = match peerstate.addr {
-                Some(ref addr) => &addr,
-                None => "",
-            };
-            let msg = context.stock_string_repl_str(StockMessage::ContactSetupChanged, peeraddr);
-
-            chat::add_device_msg(context, contact_chat_id, msg);
-            emit_event!(context, Event::CHAT_MODIFIED, contact_chat_id, 0);
-        }
-    }
-}
--- a/src/smtp.rs
+++ b/src/smtp.rs
@@ -4,7 +4,7 @@ use lettre::*;
 use crate::constants::Event;
 use crate::constants::*;
 use crate::context::Context;
-use crate::login_param::LoginParam;
+use crate::dc_loginparam::*;
 use crate::oauth2::*;

 pub struct Smtp {
@@ -12,7 +12,7 @@ pub struct Smtp {
    transport_connected: bool,
    /// Email address we are sending from.
    from: Option<EmailAddress>,
-    pub error: Option<String>,
+    pub error: *mut libc::c_char,
 }

 impl Smtp {
@@ -22,7 +22,7 @@ impl Smtp {
            transport: None,
            transport_connected: false,
            from: None,
-            error: None,
+            error: std::ptr::null_mut(),
        }
    }

@@ -43,9 +43,9 @@ impl Smtp {
    }

    /// Connect using the provided login params
-    pub fn connect(&mut self, context: &Context, lp: &LoginParam) -> bool {
+    pub fn connect(&mut self, context: &Context, lp: &dc_loginparam_t) -> bool {
        if self.is_connected() {
-            warn!(context, "SMTP already connected.");
+            warn!(context, 0, "SMTP already connected.");
            return true;
        }

@@ -119,7 +119,7 @@ impl Smtp {
                true
            }
            Err(err) => {
-                warn!(context, "SMTP: failed to establish connection {:?}", err);
+                warn!(context, 0, "SMTP: failed to establish connection {:?}", err);
                false
            }
        }
@@ -151,8 +151,7 @@ impl Smtp {
                    1
                }
                Err(err) => {
-                    warn!(context, "SMTP failed to send message: {}", err);
-                    self.error = Some(format!("{}", err));
+                    warn!(context, 0, "SMTP failed to send message: {}", err);
                    0
                }
            }
--- a/src/sql.rs
+++ b/src/sql.rs
@@ -35,7 +35,7 @@ impl Sql {
        self.in_use.remove();
        // drop closes the connection

-        info!(context, "Database closed.");
+        info!(context, 0, "Database closed.");
    }

    // return true on success, false on failure
@@ -176,7 +176,7 @@ impl Sql {
                rusqlite::types::Type::Null,
            ))) => None,
            Err(err) => {
-                error!(context, "sql: Failed query_row: {}", err);
+                error!(context, 0, "sql: Failed query_row: {}", err);
                None
            }
        }
@@ -193,7 +193,7 @@ impl Sql {
        value: Option<&str>,
    ) -> Result<()> {
        if !self.is_open() {
-            error!(context, "set_config(): Database not ready.");
+            error!(context, 0, "set_config(): Database not ready.");
            return Err(Error::SqlNoConnection);
        }

@@ -227,7 +227,7 @@ impl Sql {
        match res {
            Ok(_) => Ok(()),
            Err(err) => {
-                error!(context, "set_config(): Cannot change value. {:?}", &err);
+                error!(context, 0, "set_config(): Cannot change value. {:?}", &err);
                Err(err.into())
            }
        }
@@ -259,20 +259,6 @@ impl Sql {
        self.get_config(context, key).and_then(|s| s.parse().ok())
    }

-    pub fn get_config_bool(&self, context: &Context, key: impl AsRef<str>) -> bool {
-        // Not the most obvious way to encode bool as string, but it is matter
-        // of backward compatibility.
-        self.get_config_int(context, key).unwrap_or_default() > 0
-    }
-
-    pub fn set_config_bool<T>(&self, context: &Context, key: T, value: bool) -> Result<()>
-    where
-        T: AsRef<str>,
-    {
-        let value = if value { Some("1") } else { None };
-        self.set_config(context, key, value)
-    }
-
    pub fn set_config_int64(
        &self,
        context: &Context,
@@ -317,6 +303,7 @@ fn open(
    if sql.is_open() {
        error!(
            context,
+            0,
            "Cannot open, database \"{:?}\" already opened.",
            dbfile.as_ref(),
        );
@@ -350,6 +337,7 @@ fn open(
        if !sql.table_exists("config") {
            info!(
                context,
+                0,
                "First time init: creating tables in {:?}.",
                dbfile.as_ref(),
            );
@@ -465,6 +453,7 @@ fn open(
            {
                error!(
                    context,
+                    0,
                    "Cannot create tables in new database \"{:?}\".",
                    dbfile.as_ref(),
                );
@@ -685,7 +674,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 46)?;
        }
        if dbversion < 47 {
-            info!(context, "[migration] v47");
+            info!(context, 0, "[migration] v47");
            sql.execute(
                "ALTER TABLE jobs ADD COLUMN tries INTEGER DEFAULT 0;",
                params![],
@@ -694,7 +683,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 47)?;
        }
        if dbversion < 48 {
-            info!(context, "[migration] v48");
+            info!(context, 0, "[migration] v48");
            sql.execute(
                "ALTER TABLE msgs ADD COLUMN move_state INTEGER DEFAULT 1;",
                params![],
@@ -704,7 +693,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 48)?;
        }
        if dbversion < 49 {
-            info!(context, "[migration] v49");
+            info!(context, 0, "[migration] v49");
            sql.execute(
                "ALTER TABLE chats ADD COLUMN gossiped_timestamp INTEGER DEFAULT 0;",
                params![],
@@ -713,7 +702,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 49)?;
        }
        if dbversion < 50 {
-            info!(context, "[migration] v50");
+            info!(context, 0, "[migration] v50");
            if 0 != exists_before_update {
                sql.set_config_int(context, "show_emails", 2)?;
            }
@@ -721,7 +710,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 50)?;
        }
        if dbversion < 53 {
-            info!(context, "[migration] v53");
+            info!(context, 0, "[migration] v53");
            sql.execute(
                "CREATE TABLE locations ( id INTEGER PRIMARY KEY AUTOINCREMENT, latitude REAL DEFAULT 0.0, longitude REAL DEFAULT 0.0, accuracy REAL DEFAULT 0.0, timestamp INTEGER DEFAULT 0, chat_id INTEGER DEFAULT 0, from_id INTEGER DEFAULT 0);",
                params![]
@@ -754,7 +743,7 @@ fn open(
            sql.set_config_int(context, "dbversion", 53)?;
        }
        if dbversion < 54 {
-            info!(context, "[migration] v54");
+            info!(context, 0, "[migration] v54");
            sql.execute(
                "ALTER TABLE msgs ADD COLUMN location_id INTEGER DEFAULT 0;",
                params![],
@@ -794,7 +783,7 @@ fn open(
            // for newer versions, we copy files always to the blob directory and store relative paths.
            // this snippet converts older databases and can be removed after some time.

-            info!(context, "[open] update file paths");
+            info!(context, 0, "[open] update file paths");

            let repl_from = sql
                .get_config(context, "backup_for")
@@ -821,7 +810,7 @@ fn open(
        }
    }

-    info!(context, "Opened {:?}.", dbfile.as_ref(),);
+    info!(context, 0, "Opened {:?}.", dbfile.as_ref(),);

    Ok(())
 }
@@ -836,6 +825,7 @@ where
        Err(err) => {
            error!(
                context,
+                0,
                "execute failed: {:?} for {}",
                &err,
                querystr.as_ref()
@@ -852,6 +842,7 @@ pub fn try_execute(context: &Context, sql: &Sql, querystr: impl AsRef<str>) -> R
        Err(err) => {
            warn!(
                context,
+                0,
                "Try-execute for \"{}\" failed: {}",
                querystr.as_ref(),
                &err,
@@ -895,7 +886,7 @@ pub fn get_rowid_with_conn(
        Err(err) => {
            error!(
                context,
-                "sql: Failed to retrieve rowid: {} in {}", err, query
+                0, "sql: Failed to retrieve rowid: {} in {}", err, query
            );
            0
        }
@@ -942,7 +933,7 @@ pub fn get_rowid2_with_conn(
    ) {
        Ok(id) => id,
        Err(err) => {
-            error!(context, "sql: Failed to retrieve rowid2: {}", err);
+            error!(context, 0, "sql: Failed to retrieve rowid2: {}", err);
            0
        }
    }
@@ -952,7 +943,7 @@ pub fn housekeeping(context: &Context) {
    let mut files_in_use = HashSet::new();
    let mut unreferenced_count = 0;

-    info!(context, "Start housekeeping...");
+    info!(context, 0, "Start housekeeping...");
    maybe_add_from_param(
        context,
        &mut files_in_use,
@@ -992,10 +983,10 @@ pub fn housekeeping(context: &Context) {
            },
        )
        .unwrap_or_else(|err| {
-            warn!(context, "sql: failed query: {}", err);
+            warn!(context, 0, "sql: failed query: {}", err);
        });

-    info!(context, "{} files in use.", files_in_use.len(),);
+    info!(context, 0, "{} files in use.", files_in_use.len(),);
    /* go through directory and delete unused files */
    let p = std::path::Path::new(as_str(context.get_blobdir()));
    match std::fs::read_dir(p) {
@@ -1024,16 +1015,17 @@ pub fn housekeeping(context: &Context) {

                match std::fs::metadata(entry.path()) {
                    Ok(stats) => {
-                        let recently_created = stats.created().is_ok()
+                        let created = stats.created().is_ok()
                            && stats.created().unwrap() > keep_files_newer_than;
-                        let recently_modified = stats.modified().is_ok()
+                        let modified = stats.modified().is_ok()
                            && stats.modified().unwrap() > keep_files_newer_than;
-                        let recently_accessed = stats.accessed().is_ok()
+                        let accessed = stats.accessed().is_ok()
                            && stats.accessed().unwrap() > keep_files_newer_than;

-                        if recently_created || recently_modified || recently_accessed {
+                        if created || modified || accessed {
                            info!(
                                context,
+                                0,
                                "Housekeeping: Keeping new unreferenced file #{}: {:?}",
                                unreferenced_count,
                                entry.file_name(),
@@ -1045,6 +1037,7 @@ pub fn housekeeping(context: &Context) {
                }
                info!(
                    context,
+                    0,
                    "Housekeeping: Deleting unreferenced file #{}: {:?}",
                    unreferenced_count,
                    entry.file_name()
@@ -1056,6 +1049,7 @@ pub fn housekeeping(context: &Context) {
        Err(err) => {
            warn!(
                context,
+                0,
                "Housekeeping: Cannot open {}. ({})",
                as_str(context.get_blobdir()),
                err
@@ -1063,7 +1057,7 @@ pub fn housekeeping(context: &Context) {
        }
    }

-    info!(context, "Housekeeping done.",);
+    info!(context, 0, "Housekeeping done.",);
 }

 fn is_file_in_use(files_in_use: &HashSet<String>, namespc_opt: Option<&str>, name: &str) -> bool {
@@ -1096,22 +1090,15 @@ fn maybe_add_from_param(
 ) {
    context
        .sql
-        .query_map(
-            query,
-            NO_PARAMS,
-            |row| row.get::<_, String>(0),
-            |rows| {
-                for row in rows {
-                    let param: Params = row?.parse().unwrap_or_default();
-                    if let Some(file) = param.get(param_id) {
-                        maybe_add_file(files_in_use, file);
-                    }
-                }
-                Ok(())
-            },
-        )
+        .query_row(query, NO_PARAMS, |row| {
+            let param: Params = row.get::<_, String>(0)?.parse().unwrap_or_default();
+            if let Some(file) = param.get(param_id) {
+                maybe_add_file(files_in_use, file);
+            }
+            Ok(())
+        })
        .unwrap_or_else(|err| {
-            warn!(context, "sql: failed to add_from_param: {}", err);
+            warn!(context, 0, "sql: failed to add_from_param: {}", err);
        });
 }

--- a/src/token.rs
+++ b/src/token.rs
@@ -1,58 +0,0 @@
-//! Functions to read/write token from/to the database. A token is any string associated with a key.
-
-use deltachat_derive::*;
-
-use crate::context::Context;
-use crate::dc_tools::*;
-use crate::sql;
-
-// Token namespaces
-#[derive(Debug, Display, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive, ToSql, FromSql)]
-#[repr(i32)]
-pub enum Namespace {
-    Unknown = 0,
-    Auth = 110,
-    InviteNumber = 100,
-}
-
-impl Default for Namespace {
-    fn default() -> Self {
-        Namespace::Unknown
-    }
-}
-
-pub fn save(context: &Context, namespace: Namespace, foreign_id: u32) -> String {
-    // foreign_id may be 0
-    let token = dc_create_id();
-    sql::execute(
-        context,
-        &context.sql,
-        "INSERT INTO tokens (namespc, foreign_id, token, timestamp) VALUES (?, ?, ?, ?);",
-        params![namespace, foreign_id as i32, &token, time()],
-    )
-    .ok();
-    token
-}
-
-pub fn lookup(context: &Context, namespace: Namespace, foreign_id: u32) -> Option<String> {
-    context.sql.query_row_col::<_, String>(
-        context,
-        "SELECT token FROM tokens WHERE namespc=? AND foreign_id=?;",
-        params![namespace, foreign_id as i32],
-        0,
-    )
-}
-
-pub fn lookup_or_new(context: &Context, namespace: Namespace, foreign_id: u32) -> String {
-    lookup(context, namespace, foreign_id).unwrap_or_else(|| save(context, namespace, foreign_id))
-}
-
-pub fn exists(context: &Context, namespace: Namespace, token: &str) -> bool {
-    context
-        .sql
-        .exists(
-            "SELECT id FROM tokens WHERE namespc=? AND token=?;",
-            params![namespace, token],
-        )
-        .unwrap_or_default()
-}
--- a/src/top_evil_rs.py
+++ b/src/top_evil_rs.py
@@ -6,21 +6,19 @@ import os
 import re

 if __name__ == "__main__":
-    if Path('src/top_evil_rs.py').exists():
-        os.chdir('src')
    filestats = []
    for fn in Path(".").glob("**/*.rs"):
        s = fn.read_text()
        s = re.sub(r"(?m)///.*$", "", s)  # remove comments
        unsafe = s.count("unsafe")
        free = s.count("free(")
-        gotoblocks = s.count("ok_to_continue") + s.count('OK_TO_CONTINUE')
+        gotoblocks = s.count("current_block =")
        filestats.append((fn, unsafe, free, gotoblocks))

    sum_unsafe, sum_free, sum_gotoblocks = 0, 0, 0

    for fn, unsafe, free, gotoblocks in reversed(sorted(filestats, key=lambda x: sum(x[1:]))):
-        print("{0: <30} unsafe: {1: >3} free: {2: >3} ok_to_continue: {3: >3}".format(str(fn), unsafe, free, gotoblocks))
+        print("{0: <30} unsafe: {1: >3} free: {2: >3} goto-blocks: {3: >3}".format(str(fn), unsafe, free, gotoblocks))
        sum_unsafe += unsafe
        sum_free += free
        sum_gotoblocks += gotoblocks
@@ -29,5 +27,5 @@ if __name__ == "__main__":
    print()
    print("total unsafe:", sum_unsafe)
    print("total free:", sum_free)
-    print("total ok_to_continue:", sum_gotoblocks)
+    print("total gotoblocks:", sum_gotoblocks)

--- a/tests/stress.rs
+++ b/tests/stress.rs
@@ -1,6 +1,7 @@
 //! Stress some functions for testing; if used as a lib, this file is obsolete.

 use std::collections::HashSet;
+use std::ffi::CString;
 use std::ptr;

 use tempfile::{tempdir, TempDir};
@@ -12,6 +13,7 @@ use deltachat::contact::*;
 use deltachat::context::*;
 use deltachat::dc_imex::*;
 use deltachat::dc_tools::*;
+use deltachat::key::*;
 use deltachat::keyring::*;
 use deltachat::oauth2::*;
 use deltachat::pgp::*;
@@ -90,7 +92,7 @@ unsafe fn stress_functions(context: &Context) {
        assert!(dc_delete_file(context, "$BLOBDIR/dada"));
        assert!(dc_create_folder(context, "$BLOBDIR/foobar-folder"));
        assert!(dc_file_exist(context, "$BLOBDIR/foobar-folder",));
-        assert!(!dc_delete_file(context, "$BLOBDIR/foobar-folder"));
+        assert!(dc_delete_file(context, "$BLOBDIR/foobar-folder"));
        let fn0: *mut libc::c_char = dc_get_fine_pathNfilename(
            context,
            b"$BLOBDIR\x00" as *const u8 as *const libc::c_char,
@@ -128,7 +130,7 @@ unsafe fn stress_functions(context: &Context) {
        free(fn1 as *mut libc::c_void);
    }

-    let res = context.get_config(&config::Config::SysConfigKeys).unwrap();
+    let res = context.get_config(config::Config::SysConfigKeys).unwrap();

    assert!(!res.contains(" probably_never_a_key "));
    assert!(res.contains(" addr "));
@@ -460,111 +462,167 @@ 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();
+    unsafe {
+        let mut bad_data: [libc::c_uchar; 4096] = [0; 4096];
+        let mut i_0: libc::c_int = 0i32;
+        while i_0 < 4096i32 {
+            bad_data[i_0 as usize] = (i_0 & 0xffi32) as libc::c_uchar;
+            i_0 += 1
+        }
+        let mut j: libc::c_int = 0i32;

-    private_key.split_key().unwrap();
+        while j < 4096 / 40 {
+            let bad_key = Key::from_binary(
+                &mut *bad_data.as_mut_ptr().offset(j as isize) as *const u8,
+                4096 / 2 + j,
+                if 0 != j & 1 {
+                    KeyType::Public
+                } else {
+                    KeyType::Private
+                },
+            );

-    let (public_key2, private_key2) = dc_pgp_create_keypair("two@zwo.de").unwrap();
+            assert!(bad_key.is_none());
+            j += 1
+        }

-    assert_ne!(public_key, public_key2);
+        let (public_key, private_key) = dc_pgp_create_keypair("foo@bar.de").unwrap();

-    let original_text = b"This is a test";
-    let mut keyring = Keyring::default();
-    keyring.add_owned(public_key.clone());
-    keyring.add_ref(&public_key2);
+        private_key.split_key().unwrap();

-    let ctext_signed = dc_pgp_pk_encrypt(original_text, &keyring, Some(&private_key)).unwrap();
-    assert!(!ctext_signed.is_empty());
-    assert!(ctext_signed.starts_with("-----BEGIN PGP MESSAGE-----"));
+        let (public_key2, private_key2) = dc_pgp_create_keypair("two@zwo.de").unwrap();

-    let ctext_unsigned = dc_pgp_pk_encrypt(original_text, &keyring, None).unwrap();
-    assert!(!ctext_unsigned.is_empty());
-    assert!(ctext_unsigned.starts_with("-----BEGIN PGP MESSAGE-----"));
+        assert_ne!(public_key, public_key2);

-    let mut keyring = Keyring::default();
-    keyring.add_owned(private_key);
+        let original_text: *const libc::c_char =
+            b"This is a test\x00" as *const u8 as *const libc::c_char;
+        let mut keyring = Keyring::default();
+        keyring.add_owned(public_key.clone());
+        keyring.add_ref(&public_key2);

-    let mut public_keyring = Keyring::default();
-    public_keyring.add_ref(&public_key);
+        let ctext = dc_pgp_pk_encrypt(
+            original_text as *const libc::c_void,
+            strlen(original_text),
+            &keyring,
+            Some(&private_key),
+        )
+        .unwrap();

-    let mut public_keyring2 = Keyring::default();
-    public_keyring2.add_owned(public_key2.clone());
+        assert!(!ctext.is_empty());
+        assert!(ctext.starts_with("-----BEGIN PGP MESSAGE-----"));

-    let mut valid_signatures: HashSet<String> = Default::default();
+        let ctext_signed_bytes = ctext.len();
+        let ctext_signed = CString::yolo(ctext);

-    let plain = dc_pgp_pk_decrypt(
-        ctext_signed.as_bytes(),
-        &keyring,
-        &public_keyring,
-        Some(&mut valid_signatures),
-    )
-    .unwrap();
+        let ctext = dc_pgp_pk_encrypt(
+            original_text as *const libc::c_void,
+            strlen(original_text),
+            &keyring,
+            None,
+        )
+        .unwrap();
+        assert!(!ctext.is_empty());
+        assert!(ctext.starts_with("-----BEGIN PGP MESSAGE-----"));

-    assert_eq!(plain, original_text,);
-    assert_eq!(valid_signatures.len(), 1);
+        let ctext_unsigned_bytes = ctext.len();
+        let ctext_unsigned = CString::yolo(ctext);

-    valid_signatures.clear();
+        let mut keyring = Keyring::default();
+        keyring.add_owned(private_key);

-    let empty_keyring = Keyring::default();
-    let plain = dc_pgp_pk_decrypt(
-        ctext_signed.as_bytes(),
-        &keyring,
-        &empty_keyring,
-        Some(&mut valid_signatures),
-    )
-    .unwrap();
-    assert_eq!(plain, original_text);
-    assert_eq!(valid_signatures.len(), 0);
+        let mut public_keyring = Keyring::default();
+        public_keyring.add_ref(&public_key);

-    valid_signatures.clear();
+        let mut public_keyring2 = Keyring::default();
+        public_keyring2.add_owned(public_key2.clone());

-    let plain = dc_pgp_pk_decrypt(
-        ctext_signed.as_bytes(),
-        &keyring,
-        &public_keyring2,
-        Some(&mut valid_signatures),
-    )
-    .unwrap();
-    assert_eq!(plain, original_text);
-    assert_eq!(valid_signatures.len(), 0);
+        let mut valid_signatures: HashSet<String> = Default::default();

-    valid_signatures.clear();
+        let plain = dc_pgp_pk_decrypt(
+            ctext_signed.as_ptr() as *const _,
+            ctext_signed_bytes,
+            &keyring,
+            &public_keyring,
+            Some(&mut valid_signatures),
+        )
+        .unwrap();

-    public_keyring2.add_ref(&public_key);
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+        assert_eq!(valid_signatures.len(), 1);

-    let plain = dc_pgp_pk_decrypt(
-        ctext_signed.as_bytes(),
-        &keyring,
-        &public_keyring2,
-        Some(&mut valid_signatures),
-    )
-    .unwrap();
-    assert_eq!(plain, original_text);
-    assert_eq!(valid_signatures.len(), 1);
+        valid_signatures.clear();

-    valid_signatures.clear();
+        let empty_keyring = Keyring::default();
+        let plain = dc_pgp_pk_decrypt(
+            ctext_signed.as_ptr() as *const _,
+            ctext_signed_bytes,
+            &keyring,
+            &empty_keyring,
+            Some(&mut valid_signatures),
+        )
+        .unwrap();
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+        assert_eq!(valid_signatures.len(), 0);

-    let plain = dc_pgp_pk_decrypt(
-        ctext_unsigned.as_bytes(),
-        &keyring,
-        &public_keyring,
-        Some(&mut valid_signatures),
-    )
-    .unwrap();
+        valid_signatures.clear();

-    assert_eq!(plain, original_text);
+        let plain = dc_pgp_pk_decrypt(
+            ctext_signed.as_ptr() as *const _,
+            ctext_signed_bytes,
+            &keyring,
+            &public_keyring2,
+            Some(&mut valid_signatures),
+        )
+        .unwrap();
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+        assert_eq!(valid_signatures.len(), 0);

-    valid_signatures.clear();
+        valid_signatures.clear();

-    let mut keyring = Keyring::default();
-    keyring.add_ref(&private_key2);
-    let mut public_keyring = Keyring::default();
-    public_keyring.add_ref(&public_key);
+        public_keyring2.add_ref(&public_key);

-    let plain =
-        dc_pgp_pk_decrypt(ctext_signed.as_bytes(), &keyring, &public_keyring, None).unwrap();
+        let plain = dc_pgp_pk_decrypt(
+            ctext_signed.as_ptr() as *const _,
+            ctext_signed_bytes,
+            &keyring,
+            &public_keyring2,
+            Some(&mut valid_signatures),
+        )
+        .unwrap();
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+        assert_eq!(valid_signatures.len(), 1);

-    assert_eq!(plain, original_text);
+        valid_signatures.clear();
+
+        let plain = dc_pgp_pk_decrypt(
+            ctext_unsigned.as_ptr() as *const _,
+            ctext_unsigned_bytes,
+            &keyring,
+            &public_keyring,
+            Some(&mut valid_signatures),
+        )
+        .unwrap();
+
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+
+        valid_signatures.clear();
+
+        let mut keyring = Keyring::default();
+        keyring.add_ref(&private_key2);
+        let mut public_keyring = Keyring::default();
+        public_keyring.add_ref(&public_key);
+
+        let plain = dc_pgp_pk_decrypt(
+            ctext_signed.as_ptr() as *const _,
+            ctext_signed_bytes,
+            &keyring,
+            &public_keyring,
+            None,
+        )
+        .unwrap();
+
+        assert_eq!(std::str::from_utf8(&plain).unwrap(), as_str(original_text),);
+    }
 }

 unsafe extern "C" fn cb(