-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2012 Shawn Smith <ShawnSmith0828@gmail.com>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2004, 2006 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "inspircd.h"
-/* $ModDesc: Provides channel mode +L (limit redirection) */
+#include "inspircd.h"
/** Handle channel mode +L
*/
-class Redirect : public ModeHandler
+class Redirect : public ParamMode<Redirect, LocalStringExt>
{
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);
- }
+ Redirect(Module* Creator)
+ : ParamMode<Redirect, LocalStringExt>(Creator, "redirect", 'L') { }
- bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, Channel* channel)
+ ModeAction OnSet(User* source, Channel* channel, std::string& parameter)
{
- /* 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, bool)
- {
- if (adding)
+ if (IS_LOCAL(source))
{
- Channel* c = NULL;
-
- if (!ServerInstance->IsChannel(parameter.c_str()))
+ if (!ServerInstance->IsChannel(parameter))
{
- source->WriteNumeric(403, "%s %s :Invalid channel name",source->nick.c_str(), parameter.c_str());
- parameter.clear();
+ source->WriteNumeric(ERR_NOSUCHCHANNEL, parameter, "Invalid channel name");
return MODEACTION_DENY;
}
+ }
- c = ServerInstance->FindChan(parameter);
- if (c)
+ if (IS_LOCAL(source) && !source->IsOper())
+ {
+ Channel* 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->WriteNumeric(690, "%s :Circular or chained +L to %s not allowed (Channel already has +L). Pack of wild dogs has been unleashed.",source->nick.c_str(),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->WriteNumeric(690, "%s :Circular or chained +L to %s not allowed (Already forwarded here from %s). Angry monkeys dispatched.",source->nick.c_str(),parameter.c_str(),i->second->name);
- return MODEACTION_DENY;
- }
- }
- }
- }
+ source->WriteNumeric(690, InspIRCd::Format("Target channel %s must exist to be set as a redirect.", parameter.c_str()));
+ return MODEACTION_DENY;
}
-
- channel->SetMode('L', true);
- channel->SetModeParam('L', parameter.c_str(), true);
- return MODEACTION_ALLOW;
- }
- else
- {
- if (channel->IsModeSet('L'))
+ else if (c->GetPrefixValue(source) < OP_VALUE)
{
- channel->SetMode('L', false);
- return MODEACTION_ALLOW;
+ source->WriteNumeric(690, InspIRCd::Format("You must be opped on %s to set it as a redirect.", parameter.c_str()));
+ return MODEACTION_DENY;
}
}
- return MODEACTION_DENY;
-
+ /*
+ * We used to do some checking for circular +L here, but there is no real need for this any more especially as we
+ * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t
+ */
+ ext.set(channel, parameter);
+ return MODEACTION_ALLOW;
+ }
+
+ void SerializeParam(Channel* chan, const std::string* str, std::string& out)
+ {
+ out += *str;
}
};
+/** Handles usermode +L to stop forced redirection and print an error.
+*/
+class AntiRedirect : public SimpleUserModeHandler
+{
+ public:
+ AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L')
+ {
+ if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"))
+ DisableAutoRegister();
+ }
+};
+
class ModuleRedirect : public Module
{
-
- Redirect* re;
-
+ Redirect re;
+ AntiRedirect re_u;
+ ChanModeReference limitmode;
+ bool UseUsermode;
+
public:
-
- ModuleRedirect(InspIRCd* Me)
- : Module(Me)
+ ModuleRedirect()
+ : re(this)
+ , re_u(this)
+ , limitmode(this, "limit")
{
-
- re = new Redirect(ServerInstance);
- if (!ServerInstance->Modes->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, const std::string &keygiven)
+ void init() CXX11_OVERRIDE
+ {
+ /* Setting this here so it isn't changable by rehasing the config later. */
+ UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
+ }
+
+ ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
{
if (chan)
{
- if (chan->IsModeSet('L') && chan->limit)
+ if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
{
- if (chan->GetUserCounter() >= chan->limit)
+ if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
{
- std::string channel = chan->GetModeParameter('L');
+ const std::string& channel = *re.ext.get(chan);
/* sometimes broken ulines can make circular or chained +L, avoid this */
- Channel* destchan = NULL;
- destchan = ServerInstance->FindChan(channel);
- if (destchan && destchan->IsModeSet('L'))
+ Channel* destchan = ServerInstance->FindChan(channel);
+ if (destchan && destchan->IsModeSet(re))
{
- user->WriteNumeric(470, "%s :%s is full, but has a circular redirect (+L), not following redirection to %s", user->nick.c_str(), cname, channel.c_str());
- return 1;
+ user->WriteNumeric(470, cname, '*', "You may not join this channel. A redirect is set, but you may not be redirected as it is a circular loop.");
+ return MOD_RES_DENY;
+ }
+ /* We check the bool value here to make sure we have it enabled, if we don't then
+ usermode +L might be assigned to something else. */
+ if (UseUsermode && user->IsModeSet(re_u))
+ {
+ user->WriteNumeric(470, cname, channel, "Force redirection stopped.");
+ return MOD_RES_DENY;
+ }
+ else
+ {
+ user->WriteNumeric(470, cname, channel, "You may not join this channel, so you are automatically being transferred to the redirect channel.");
+ Channel::JoinUser(user, channel);
+ return MOD_RES_DENY;
}
-
- user->WriteNumeric(470, "%s :%s has become full, so you are automatically being transferred to the linked channel %s", user->nick.c_str(), cname, channel.c_str());
- Channel::JoinUser(ServerInstance, user, channel.c_str(), false, "", false, ServerInstance->Time());
- return 1;
}
}
}
- return 0;
+ return MOD_RES_PASSTHRU;
}
- virtual ~ModuleRedirect()
- {
- ServerInstance->Modes->DelMode(re);
- delete re;
- }
-
- virtual Version GetVersion()
+ Version GetVersion() CXX11_OVERRIDE
{
- return Version(1, 2, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+ return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
}
};
projects / user / henk / code / inspircd.git / blobdiff