Use OpenSSL 3

Cargo.toml

@@ -9,15 +9,22 @@ path = "src/lib.rs"
 crate-type = ["dylib"]
 
 [dependencies]
-deltachat = { git = "https://github.com/deltachat/deltachat-core-rust", tag="v1.51.0" }
-lazy_static = "1.4.0"
-log = "0.4.8"
-purple-rs = "*"
+openssl = "0.10.36"
+openssl-src = "300.0.0"
+deltachat = { git = "https://github.com/deltachat/deltachat-core-rust", tag = "1.60.0" }
+lazy_static = "*"
+log = "*"
+purple-rs = { git = "https://github.com/Flared/purple-rs", branch = "master" }
+
+## Keep in sync with deltachat-core-rust ##
 
-# Keep in sync with deltachat-core-rust
 [dependencies.async-std]
-version = "~1.8"
+version = "~1.9"
 features = ["unstable"]
 
 [profile.release]
 lto = true
+
+[patch.crates-io]
+openssl-sys = { git = "https://github.com/lupine/rust-openssl", branch = "upgrade-openssl-3" }
+openssl-src = { git = "https://github.com/lupine/openssl-src-rs", branch = "upgrade-openssl-3" }

README.md

@@ -33,22 +33,15 @@ Starting again from scratch in Rust. So currently, nothing works. TODO list:
 - [ ] Send/receive video messages
 - [ ] Send/receive arbitrary attachments
 
-
-
 ## Build
 
-There are some licensing issues at present, so you shouldn't build this plugin.
+To get a `target/debug/libpurple_delta.so`, just run `cargo build`. 
 
-`deltachat-core-rust` uses a vendored openssl 1, unconditionally links it, and
-is MPL-licensed.
-
-`purple-plugin-delta` is GPLv3 without the [OpenSSL exemption](https://people.gnome.org/~markmc/openssl-and-the-gpl.html)
-
-`libpurple` itself is GPLv2 without the OpenSSL exemption.
-
-There's no point to `purple-plugin-delta` adding the OpenSSL exemption because
-`libpurple` lacks it, and in any event, it will be unnecessary with the next
-major version of OpenSSL. So, time should resolve this for us one way or another.
+Since purple-plugin-delta is made to link against libpurple, which is GPLv2
+without the "OpenSSL exemption", distributing something that linked against
+OpenSSL 1 would be a licensing violation. Instead, we configure the build system
+so we statically link against a vendored OpenSSL 3 instead. This has only been
+possible since 2021-09-07.
 
 Significant code using the WTFPL includes the [libpurple-rust bindings](https://github.com/sbwtw/libpurple-rust)
 and the [pidgin-wechat plugin](https://github.com/sbwtw/pidgin-wechat), which
@@ -57,7 +50,7 @@ against this mess.
 
 ## Use
 
-The easiest way to use this is to copy the `libdelta.so` file into
+The easiest way to use this is to copy the `libpurple_delta.so` file into
 `~/.purple/plugins`. When running pidgin, you'll now have the option to add
 a "Delta Chat" account.
 

rust-toolchain

@@ -1 +1 @@
-1.50.0
+1.54.0

src/lib.rs

@@ -1,7 +1,9 @@
 extern crate async_std;
+extern crate deltachat;
 extern crate lazy_static;
 extern crate log;
 extern crate purple_rs as purple;
+extern crate openssl;
 
 use async_std::sync::Arc; // RwLock
 use chat_info::{ChatInfo, PartialChatInfo}; //ChatInfoVersion
@@ -14,6 +16,8 @@ use std::ffi::{CStr, CString};
 //use std::rc::Rc;
 use std::sync::atomic::{AtomicBool, Ordering};
 
+use deltachat::accounts::Accounts;
+
 mod chat_info;
 mod delta;
 pub mod logging;
@@ -121,6 +125,8 @@ impl purple::PrplPlugin for PurpleDelta {
         }
     }
     fn register(&self, context: RegisterContext<Self>) -> RegisterContext<Self> {
+        println!("OpenSSL version: {}", openssl::version::version());
+
         let info = purple::PrplInfo {
             id: "prpl-delta".into(),
             name: "Delta Chat".into(),