-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
- *
- * Written by Craig Edwards, Craig McLure, and others.
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * 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 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 <stdio.h>
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-/* $ModDesc: Provides channel mode +L (limit redirection) */
+#include "inspircd.h"
+/* $ModDesc: Provides channel mode +L (limit redirection) and usermode +L (no forced redirection) */
-class ModuleRedirect : public Module
+/** Handle channel mode +L
+ */
+class Redirect : public ModeHandler
{
- Server *Srv;
-
public:
-
- ModuleRedirect()
- {
- Srv = new Server;
- Srv->AddExtendedMode('L',MT_CHANNEL,false,1,0);
- }
-
- virtual int OnExtendedMode(userrec* user, void* target, char modechar, int type, bool mode_on, string_list ¶ms)
+ Redirect(Module* Creator) : ModeHandler(Creator, "redirect", 'L', PARAM_SETONLY, MODETYPE_CHANNEL) { }
+
+ ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
{
- if ((modechar == 'L') && (type == MT_CHANNEL))
+ if (adding)
{
- if (mode_on)
+ if (IS_LOCAL(source))
{
- std::string ChanToJoin = params[0];
- chanrec* c = Srv->FindChannel(ChanToJoin);
- if (c)
+ if (!ServerInstance->IsChannel(parameter.c_str(), ServerInstance->Config->Limits.ChanMax))
{
- if (c->IsCustomModeSet('L'))
- {
- WriteServ(user->fd,"690 %s :Circular redirection, mode +L to %s not allowed.",user->nick,params[0].c_str());
- return 0;
- }
+ source->WriteNumeric(403, "%s %s :Invalid channel name", source->nick.c_str(), parameter.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
}
}
- return 1;
- }
- return 0;
- }
- virtual void On005Numeric(std::string &output)
- {
- std::stringstream line(output);
- std::string temp1, temp2;
- while (!line.eof())
- {
- line >> temp1;
- if (temp1.substr(0,10) == "CHANMODES=")
- {
- // By doing this we're *assuming* no other module has fucked up the CHANMODES=
- // section of the 005 numeric. If they have, we're going DOWN in a blaze of glory,
- // with a honking great EXCEPTION :)
- temp1.insert(temp1.find(",")+1,"L");
- }
- temp2 = temp2 + temp1 + " ";
- }
- output = temp2.substr(0,temp2.length()-1);
- }
-
- virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
- {
- if (chan)
- {
- if (chan->IsCustomModeSet('L'))
+ if (IS_LOCAL(source) && !IS_OPER(source))
{
- if (chan->limit >= Srv->CountUsers(chan))
+ Channel* c = ServerInstance->FindChan(parameter);
+ if (!c)
{
- std::string channel = chan->GetModeParameter('L');
- WriteServ(user->fd,"470 %s :%s has become full, so you are automatically being transferred to the linked channel %s",user->nick,cname,channel.c_str());
- Srv->JoinUserToChannel(user,channel.c_str(),"");
- return 1;
+ source->WriteNumeric(690, "%s :Target channel %s must exist to be set as a redirect.",source->nick.c_str(),parameter.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
+ }
+ else if (c->GetPrefixValue(source) < OP_VALUE)
+ {
+ source->WriteNumeric(690, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(),parameter.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
}
}
+
+ if (channel->GetModeParameter('L') == parameter)
+ 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
+ */
+ channel->SetModeParam('L', parameter);
+ return MODEACTION_ALLOW;
+ }
+ else
+ {
+ if (channel->IsModeSet('L'))
+ {
+ channel->SetModeParam('L', "");
+ return MODEACTION_ALLOW;
+ }
}
- }
- virtual ~ModuleRedirect()
- {
- delete Srv;
- }
-
- virtual Version GetVersion()
- {
- return Version(1,0,0,0);
- }
-
- virtual void OnUserConnect(userrec* user)
- {
- }
+ return MODEACTION_DENY;
+ }
};
+/** Handles usermode +L to stop forced redirection and print an error.
+*/
+class AntiRedirect : public SimpleUserModeHandler
+{
+ public:
+ AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L') {}
+};
-class ModuleRedirectFactory : public ModuleFactory
+class ModuleRedirect : public Module
{
+
+ Redirect re;
+ AntiRedirect re_u;
+ bool UseUsermode;
+
public:
- ModuleRedirectFactory()
+
+ ModuleRedirect()
+ : re(this), re_u(this)
{
}
-
- ~ModuleRedirectFactory()
+
+ void init()
{
+ /* Setting this here so it isn't changable by rehasing the config later. */
+ UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
+
+ /* Channel mode */
+ ServerInstance->Modules->AddService(re);
+
+ /* Check to see if the usermode is enabled in the config */
+ if (UseUsermode)
+ {
+ /* Log noting that this breaks compatability. */
+ ServerInstance->Logs->Log("m_redirect", DEFAULT, "REDIRECT: Enabled usermode +L. This breaks linking with servers that do not have this enabled. This is disabled by default in the 2.0 branch but will be enabled in the next version.");
+
+ /* Try to add the usermode */
+ ServerInstance->Modules->AddService(re_u);
+ }
+
+ Implementation eventlist[] = { I_OnUserPreJoin };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
-
- virtual Module * CreateModule()
+
+ virtual ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
{
- return new ModuleRedirect;
+ if (chan)
+ {
+ if (chan->IsModeSet('L') && chan->IsModeSet('l'))
+ {
+ if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter('l')))
+ {
+ 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->WriteNumeric(470, "%s %s * :You may not join this channel. A redirect is set, but you may not be redirected as it is a circular loop.", user->nick.c_str(), cname);
+ 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('L'))
+ {
+ user->WriteNumeric(470, "%s %s %s :Force redirection stopped.",
+ user->nick.c_str(), cname, channel.c_str());
+ return MOD_RES_DENY;
+ }
+ else
+ {
+ user->WriteNumeric(470, "%s %s %s :You may not join this channel, so you are automatically being transferred to the redirect channel.", user->nick.c_str(), cname, channel.c_str());
+ Channel::JoinUser(user, channel.c_str(), false, "", false, ServerInstance->Time());
+ return MOD_RES_DENY;
+ }
+ }
+ }
+ }
+ return MOD_RES_PASSTHRU;
}
-
-};
+ virtual ~ModuleRedirect()
+ {
+ }
-extern "C" void * init_module( void )
-{
- return new ModuleRedirectFactory;
-}
+ virtual Version GetVersion()
+ {
+ return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
+ }
+};
+MODULE_INIT(ModuleRedirect)
projects / user / henk / code / inspircd.git / blobdiff