fix: more logic fixes for encryption

src/dc_apeerstate.rs

@@ -522,15 +522,15 @@ pub unsafe fn dc_apeerstate_save_to_db(
     success
 }
 
-// TODO should return bool /rtn
 pub unsafe fn dc_apeerstate_has_verified_key(
     peerstate: &dc_apeerstate_t,
     fingerprints: *const dc_hash_t,
-) -> libc::c_int {
+) -> bool {
     if fingerprints.is_null() {
-        return 0;
+        return false;
     }
-    if !peerstate.verified_key.is_some()
+
+    if peerstate.verified_key.is_some()
         && !peerstate.verified_key_fingerprint.is_null()
         && !dc_hash_find(
             fingerprints,
@@ -539,8 +539,8 @@ pub unsafe fn dc_apeerstate_has_verified_key(
         )
         .is_null()
     {
-        return 1;
+        return true;
     }
 
-    0
+    false
 }

src/dc_contact.rs

@@ -1114,19 +1114,21 @@ pub unsafe fn dc_contact_is_verified_ex<'a>(
         }
     } else {
         let mut peerstate = dc_apeerstate_new((*contact).context);
-        let mut res = 0;
 
-        if 0 != dc_apeerstate_load_by_addr(
-            &mut peerstate,
-            &mut (*contact).context.sql.clone().read().unwrap(),
-            (*contact).addr,
-        ) {
-            res = if peerstate.verified_key.is_some() {
+        let res = if 0
+            != dc_apeerstate_load_by_addr(
+                &mut peerstate,
+                &(*contact).context.sql.clone().read().unwrap(),
+                (*contact).addr,
+            ) {
+            if peerstate.verified_key.is_some() {
                 2
             } else {
                 0
-            };
-        }
+            }
+        } else {
+            0
+        };
         dc_apeerstate_unref(&mut peerstate);
 
         res

src/dc_receive_imf.rs

@@ -1896,12 +1896,10 @@ unsafe fn check_verified_properties(
                 );
                 dc_log_warning(context, 0i32, *failure_reason);
                 current_block = 14837890932895028253;
-            } else if 0
-                == dc_apeerstate_has_verified_key(
-                    &peerstate,
-                    (*(*mimeparser).e2ee_helper).signatures,
-                )
-            {
+            } else if !dc_apeerstate_has_verified_key(
+                &peerstate,
+                (*(*mimeparser).e2ee_helper).signatures,
+            ) {
                 *failure_reason = dc_mprintf(
                     b"%s. See \"Info\" for details.\x00" as *const u8 as *const libc::c_char,
                     b"The message was sent with non-verified encryption.\x00" as *const u8