/*
* InspIRCd -- Internet Relay Chat Daemon
*
- * Copyright (C) 2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2018 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2014, 2016 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
* Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
#include "inspircd.h"
#include "commands.h"
-#include "treesocket.h"
-#include "treeserver.h"
-#include "utils.h"
-
/** FTOPIC command */
-CmdResult CommandFTopic::Handle(const std::vector<std::string>& params, User *user)
+CmdResult CommandFTopic::Handle(User* user, Params& params)
{
- time_t ts = ConvToInt(params[1]);
Channel* c = ServerInstance->FindChan(params[0]);
- if (c)
+ if (!c)
+ return CMD_FAILURE;
+
+ if (c->age < ServerCommand::ExtractTS(params[1]))
+ // Our channel TS is older, nothing to do
+ return CMD_FAILURE;
+
+ // Channel::topicset is initialized to 0 on channel creation, so their ts will always win if we never had a topic
+ time_t ts = ServerCommand::ExtractTS(params[2]);
+ if (ts < c->topicset)
+ return CMD_FAILURE;
+
+ // The topic text is always the last parameter
+ const std::string& newtopic = params.back();
+
+ // If there is a setter in the message use that, otherwise use the message source
+ const std::string& setter = ((params.size() > 4) ? params[3] : (ServerInstance->Config->FullHostInTopic ? user->GetFullHost() : user->nick));
+
+ /*
+ * If the topics were updated at the exact same second, accept
+ * the remote only when it's "bigger" than ours as defined by
+ * string comparison, so non-empty topics always overridde
+ * empty topics if their timestamps are equal
+ *
+ * Similarly, if the topic texts are equal too, keep one topic
+ * setter and discard the other
+ */
+ if (ts == c->topicset)
{
- if ((ts >= c->topicset) || (c->topic.empty()))
- {
- if (c->topic != params[3])
- {
- // Update topic only when it differs from current topic
- c->topic.assign(params[3], 0, ServerInstance->Config->Limits.MaxTopic);
- c->WriteChannel(user, "TOPIC %s :%s", c->name.c_str(), c->topic.c_str());
- }
-
- // Always update setter and settime.
- c->setby.assign(params[2], 0, 127);
- c->topicset = ts;
- }
+ // Discard if their topic text is "smaller"
+ if (c->topic > newtopic)
+ return CMD_FAILURE;
+
+ // If the texts are equal in addition to the timestamps, decide which setter to keep
+ if ((c->topic == newtopic) && (c->setby >= setter))
+ return CMD_FAILURE;
}
+
+ c->SetTopic(user, newtopic, ts, &setter);
return CMD_SUCCESS;
}
+// Used when bursting and in reply to RESYNC, contains topic setter as the 4th parameter
+CommandFTopic::Builder::Builder(Channel* chan)
+ : CmdBuilder("FTOPIC")
+{
+ push(chan->name);
+ push_int(chan->age);
+ push_int(chan->topicset);
+ push(chan->setby);
+ push_last(chan->topic);
+}
+
+// Used when changing the topic, the setter is the message source
+CommandFTopic::Builder::Builder(User* user, Channel* chan)
+ : CmdBuilder(user, "FTOPIC")
+{
+ push(chan->name);
+ push_int(chan->age);
+ push_int(chan->topicset);
+ push_last(chan->topic);
+}