Catch all exception produced by a received message (irc or xmpp)

src/irc/irc_client.cpp

@@ -93,7 +93,13 @@ void IrcClient::parse_in_buffer(const size_t)
       this->in_buf = this->in_buf.substr(pos + 2, std::string::npos);
       auto cb = irc_callbacks.find(message.command);
       if (cb != irc_callbacks.end())
-        (this->*(cb->second))(message);
+        {
+          try {
+            (this->*(cb->second))(message);
+          } catch (const std::exception& e) {
+            log_error("Unhandled exception: " << e.what());
+          }
+        }
       else
         log_info("No handler for command " << message.command);
     }

src/xmpp/xmpp_parser.cpp

@@ -131,7 +131,13 @@ void XmppParser::char_data(const XML_Char* data, int len)
 void XmppParser::stanza_event(const Stanza& stanza) const
 {
   for (const auto& callback: this->stanza_callbacks)
-    callback(stanza);
+    {
+      try {
+        callback(stanza);
+      } catch (const std::exception& e) {
+        log_debug("Unhandled exception: " << e.what());
+      }
+    }
 }
 
 void XmppParser::stream_open_event(const XmlNode& node) const