degesch: show mode changes

degesch.c

@@ -3828,8 +3828,50 @@ irc_handle_kick (struct server *s, const struct irc_message *msg)
 static void
 irc_handle_mode (struct server *s, const struct irc_message *msg)
 {
+	if (!msg->prefix || msg->params.len < 1)
+		return;
+
+	char *who = irc_cut_nickname (msg->prefix);
+	const char *context = msg->params.vector[0];
+
+	// Join the modes back to a single string
+	struct str_vector copy;
+	str_vector_init (&copy);
+	str_vector_add_vector (&copy, msg->params.vector + 1);
+	char *reconstructed = join_str_vector (&copy, ' ');
+	str_vector_free (&copy);
+	char *modes = irc_to_utf8 (s->ctx, reconstructed);
+	free (reconstructed);
+
 	// TODO: parse the mode change and apply it
-	// TODO: log a message
+
+	if (irc_is_channel (s, context))
+	{
+		struct channel *channel = str_map_find (&s->irc_channels, context);
+		struct buffer *buffer = str_map_find (&s->irc_buffer_map, context);
+		hard_assert ((channel && buffer) ||
+			(channel && !buffer) || (!channel && !buffer));
+
+		// FIXME: logging
+		if (buffer)
+		{
+			buffer_send_status (s->ctx, buffer,
+				"Mode %s [%s] by %s", context, modes, who);
+		}
+	}
+	else if (irc_is_this_us (s, context))
+	{
+		// FIXME: logging
+		buffer_send_status (s->ctx, s->buffer,
+			"User mode [%s] by %s", modes, who);
+	}
+	else
+	{
+		// XXX: this shouldn't happen, reconnect?
+	}
+
+	free (who);
+	free (modes);
 }
 
 static void