src/coremods/core_channel/cmd_topic.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2008 Craig Edwards <craigedwards@brainbox.cc>
   7  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   8  *
   9  * This file is part of InspIRCd.  InspIRCd is free software: you can
  10  * redistribute it and/or modify it under the terms of the GNU General Public
  11  * License as published by the Free Software Foundation, version 2.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  15  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22
  23 #include "inspircd.h"
  24 #include "core_channel.h"
  25
  26 CommandTopic::CommandTopic(Module* parent)
  27         : SplitCommand(parent, "TOPIC", 1, 2)
  28         , exemptionprov(parent)
  29         , secretmode(parent, "secret")
  30         , topiclockmode(parent, "topiclock")
  31 {
  32         syntax = "<channel> [<topic>]";
  33         Penalty = 2;
  34 }
  35
  36 CmdResult CommandTopic::HandleLocal(const std::vector<std::string>& parameters, LocalUser* user)
  37 {
  38         Channel* c = ServerInstance->FindChan(parameters[0]);
  39         if (!c)
  40         {
  41                 user->WriteNumeric(Numerics::NoSuchNick(parameters[0]));
  42                 return CMD_FAILURE;
  43         }
  44
  45         if (parameters.size() == 1)
  46         {
  47                 if ((c->IsModeSet(secretmode)) && (!c->HasUser(user)))
  48                 {
  49                         user->WriteNumeric(Numerics::NoSuchNick(c->name));
  50                         return CMD_FAILURE;
  51                 }
  52
  53                 if (c->topic.length())
  54                 {
  55                         Topic::ShowTopic(user, c);
  56                 }
  57                 else
  58                 {
  59                         user->WriteNumeric(RPL_NOTOPICSET, c->name, "No topic is set.");
  60                 }
  61                 return CMD_SUCCESS;
  62         }
  63
  64         std::string t = parameters[1]; // needed, in case a module wants to change it
  65         ModResult res;
  66         FIRST_MOD_RESULT(OnPreTopicChange, res, (user,c,t));
  67
  68         if (res == MOD_RES_DENY)
  69                 return CMD_FAILURE;
  70         if (res != MOD_RES_ALLOW)
  71         {
  72                 if (!c->HasUser(user))
  73                 {
  74                         user->WriteNumeric(ERR_NOTONCHANNEL, c->name, "You're not on that channel!");
  75                         return CMD_FAILURE;
  76                 }
  77                 if (c->IsModeSet(topiclockmode))
  78                 {
  79                         ModResult MOD_RESULT;
  80                         FIRST_MOD_RESULT_CUSTOM(exemptionprov, CheckExemption::EventListener, OnCheckExemption, MOD_RESULT, (user, c, "topiclock"));
  81                         if (!MOD_RESULT.check(c->GetPrefixValue(user) >= HALFOP_VALUE))
  82                         {
  83                                 user->WriteNumeric(ERR_CHANOPRIVSNEEDED, c->name, "You do not have access to change the topic on this channel");
  84                                 return CMD_FAILURE;
  85                         }
  86                 }
  87         }
  88
  89         // Make sure the topic is not longer than the limit in the config
  90         if (t.length() > ServerInstance->Config->Limits.MaxTopic)
  91                 t.erase(ServerInstance->Config->Limits.MaxTopic);
  92
  93         // Only change if the new topic is different than the current one
  94         if (c->topic != t)
  95                 c->SetTopic(user, t, ServerInstance->Time());
  96         return CMD_SUCCESS;
  97 }
  98
  99 void Topic::ShowTopic(LocalUser* user, Channel* chan)
 100 {
 101         user->WriteNumeric(RPL_TOPIC, chan->name, chan->topic);
 102         user->WriteNumeric(RPL_TOPICTIME, chan->name, chan->setby, (unsigned long)chan->topicset);
 103 }