From 46c544a5cae7d70ca627f1eb02c00edf76fc2c6e Mon Sep 17 00:00:00 2001
From: Alexander Krotov <ilabdsf@gmail.com>
Date: Thu, 5 Nov 2020 05:21:01 +0300
Subject: [PATCH] deltachat-ffi: forbid quoting messages from another context

---
 deltachat-ffi/src/lib.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index 36aab586a..8e95669a8 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -3008,6 +3008,11 @@ pub unsafe extern "C" fn dc_msg_set_quote(msg: *mut dc_msg_t, quote: *const dc_m
     let ffi_msg = &mut *msg;
     let ffi_quote = &*quote;
 
+    if ffi_msg.context != ffi_quote.context {
+        eprintln!("ignoring attempt to quote message from a different context");
+        return;
+    }
+
     block_on(async move {
         ffi_msg
             .message