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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
/* $ModDesc: Provides support for channel mode +P to provide permanent channels */
/** Handles the +P channel mode
*/
class PermChannel : public ModeHandler
{
public:
PermChannel(InspIRCd* Instance, Module* Creator) : ModeHandler(Instance, Creator, 'P', 0, 0, false, MODETYPE_CHANNEL, false) { }
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
{
if (!source->HasPrivPermission("channels/set-permanent"))
{
source->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - You do not have the required operator privileges", source->nick.c_str());
return MODEACTION_DENY;
}
if (adding)
{
if (!channel->IsModeSet('P'))
{
channel->SetMode('P',true);
return MODEACTION_ALLOW;
}
}
else
{
if (channel->IsModeSet('P'))
{
if (channel->GetUserCounter() == 0 && !IS_FAKE(source))
{
/*
* ugh, ugh, UGH!
*
* We can't delete this channel the way things work at the moment,
* because of the following scenario:
* s1:#c <-> s2:#c
*
* s1 has a user in #c, s2 does not. s2 has +P set. s2 has a losing TS.
*
* On netmerge, s2 loses, so s2 removes all modes (including +P) which
* would subsequently delete the channel here causing big fucking problems.
*
* I don't think there's really a way around this, so just deny -P on a 0 user chan.
* -- w00t
*
* delete channel;
*/
return MODEACTION_DENY;
}
/* for servers, remove +P (to avoid desyncs) but don't bother trying to delete. */
channel->SetMode('P',false);
return MODEACTION_ALLOW;
}
}
return MODEACTION_DENY;
}
};
class ModulePermanentChannels : public Module
{
PermChannel p;
public:
ModulePermanentChannels(InspIRCd* Me) : Module(Me), p(Me, this)
{
if (!ServerInstance->Modes->AddMode(&p))
throw ModuleException("Could not add new modes!");
Implementation eventlist[] = { I_OnChannelPreDelete };
ServerInstance->Modules->Attach(eventlist, this, 1);
OnRehash(NULL);
}
virtual ~ModulePermanentChannels()
{
ServerInstance->Modes->DelMode(&p);
/*
* DelMode can't remove the +P mode on empty channels, or it will break
* merging modes with remote servers. Remove the empty channels now as
* we know this is not the case.
*/
chan_hash::iterator iter = ServerInstance->chanlist->begin();
while (iter != ServerInstance->chanlist->end())
{
Channel* c = iter->second;
if (c->GetUserCounter() == 0)
{
chan_hash::iterator at = iter;
iter++;
ServerInstance->chanlist->erase(at);
delete c;
}
else
iter++;
}
}
virtual void OnRehash(User *user)
{
/*
* Process config-defined list of permanent channels.
* -- w00t
*/
ConfigReader MyConf(ServerInstance);
for (int i = 0; i < MyConf.Enumerate("permchannels"); i++)
{
std::string channel = MyConf.ReadValue("permchannels", "channel", i);
std::string topic = MyConf.ReadValue("permchannels", "topic", i);
std::string modes = MyConf.ReadValue("permchannels", "modes", i);
if (channel.empty())
{
ServerInstance->Logs->Log("blah", DEBUG, "Malformed permchannels tag with empty channel name.");
continue;
}
Channel *c = ServerInstance->FindChan(channel);
if (!c)
{
c = new Channel(ServerInstance, channel, ServerInstance->Time());
if (!topic.empty())
{
c->SetTopic(NULL, topic, true);
/*
* Due to the way protocol works in 1.2, we need to hack the topic TS in such a way that this
* topic will always win over others.
*
* This is scheduled for (proper) fixing in a later release, and can be removed at a later date.
*/
c->topicset = 42;
}
ServerInstance->Logs->Log("blah", DEBUG, "Added %s with topic %s", channel.c_str(), topic.c_str());
if (modes.empty())
continue;
irc::spacesepstream list(modes);
std::string modeseq;
std::string par;
list.GetToken(modeseq);
// XXX bleh, should we pass this to the mode parser instead? ugly. --w00t
for (std::string::iterator n = modeseq.begin(); n != modeseq.end(); ++n)
{
ModeHandler* mode = ServerInstance->Modes->FindMode(*n, MODETYPE_CHANNEL);
if (mode)
{
if (mode->GetNumParams(true))
list.GetToken(par);
else
par.clear();
mode->OnModeChange(ServerInstance->FakeClient, ServerInstance->FakeClient, c, par, true);
}
}
}
}
}
virtual Version GetVersion()
{
return Version("$Id$",VF_COMMON|VF_VENDOR,API_VERSION);
}
virtual ModResult OnChannelPreDelete(Channel *c)
{
if (c->IsModeSet('P'))
return MOD_RES_DENY;
return MOD_RES_PASSTHRU;
}
};
MODULE_INIT(ModulePermanentChannels)
|
