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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
/* $ModDesc: Provides channel mode +L (limit redirection) */
/** Handle channel mode +L
*/
class Redirect : public ModeHandler
{
public:
Redirect(InspIRCd* Instance) : ModeHandler(Instance, 'L', 1, 0, false, MODETYPE_CHANNEL, false) { }
ModePair ModeSet(User* source, User* dest, Channel* channel, const std::string ¶meter)
{
if (channel->IsModeSet('L'))
return std::make_pair(true, channel->GetModeParameter('L'));
else
return std::make_pair(false, parameter);
}
bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, Channel* channel)
{
/* When TS is equal, the alphabetically later one wins */
return (their_param < our_param);
}
ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
{
if (adding)
{
Channel* c = NULL;
if (!ServerInstance->IsChannel(parameter.c_str()))
{
source->WriteServ("403 %s %s :Invalid channel name",source->nick, parameter.c_str());
parameter.clear();
return MODEACTION_DENY;
}
c = ServerInstance->FindChan(parameter);
if (c)
{
/* Fix by brain: Dont let a channel be linked to *itself* either */
if (IS_LOCAL(source))
{
if ((c == channel) || (c->IsModeSet('L')))
{
source->WriteServ("690 %s :Circular or chained +L to %s not allowed (Channel already has +L). Pack of wild dogs has been unleashed.",source->nick,parameter.c_str());
parameter.clear();
return MODEACTION_DENY;
}
else
{
for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
{
if ((i->second != channel) && (i->second->IsModeSet('L')) && (irc::string(i->second->GetModeParameter('L').c_str()) == irc::string(channel->name)))
{
source->WriteServ("690 %s :Circular or chained +L to %s not allowed (Already forwarded here from %s). Angry monkeys dispatched.",source->nick,parameter.c_str(),i->second->name);
return MODEACTION_DENY;
}
}
}
}
}
channel->SetMode('L', true);
channel->SetModeParam('L', parameter.c_str(), true);
return MODEACTION_ALLOW;
}
else
{
if (channel->IsModeSet('L'))
{
channel->SetMode('L', false);
return MODEACTION_ALLOW;
}
}
return MODEACTION_DENY;
}
};
class ModuleRedirect : public Module
{
Redirect* re;
public:
ModuleRedirect(InspIRCd* Me)
: Module(Me)
{
re = new Redirect(ServerInstance);
if (!ServerInstance->AddMode(re))
throw ModuleException("Could not add new modes!");
Implementation eventlist[] = { I_OnUserPreJoin };
ServerInstance->Modules->Attach(eventlist, this, 1);
}
virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs)
{
if (chan)
{
if (chan->IsModeSet('L') && chan->limit)
{
if (chan->GetUserCounter() >= chan->limit)
{
std::string channel = chan->GetModeParameter('L');
/* sometimes broken ulines can make circular or chained +L, avoid this */
Channel* destchan = NULL;
destchan = ServerInstance->FindChan(channel);
if (destchan && destchan->IsModeSet('L'))
{
user->WriteServ("470 %s :%s is full, but has a circular redirect (+L), not following redirection to %s", user->nick, cname, channel.c_str());
return 1;
}
user->WriteServ("470 %s :%s has become full, so you are automatically being transferred to the linked channel %s", user->nick, cname, channel.c_str());
Channel::JoinUser(ServerInstance, user, channel.c_str(), false, "", false, ServerInstance->Time(true));
return 1;
}
}
}
return 0;
}
virtual ~ModuleRedirect()
{
ServerInstance->Modes->DelMode(re);
delete re;
}
virtual Version GetVersion()
{
return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
}
};
MODULE_INIT(ModuleRedirect)
|
