+ModResult ModuleSpanningTree::OnPreTopicChange(User* user, Channel* chan, const std::string& topic)
+{
+ // XXX: Deny topic changes if the current topic set time is the current time or is in the future because
+ // other servers will drop our FTOPIC. This restriction will be removed when the protocol is updated.
+ if ((chan->topicset >= ServerInstance->Time()) && (Utils->serverlist.size() > 1))
+ {
+ user->WriteNumeric(ERR_CHANOPRIVSNEEDED, chan->name, "Retry topic change later");
+ return MOD_RES_DENY;
+ }
+ return MOD_RES_PASSTHRU;
+}
+