-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd is copyright (C) 2002-2006 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/>.
*/
-using namespace std;
-
-#include <stdio.h>
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "helperfuncs.h"
-
-/* $ModDesc: Provides channel mode +L (limit redirection) */
+#include "inspircd.h"
-class ModuleRedirect : public Module
+/** Handle channel mode +L
+ */
+class Redirect : public ModeHandler
{
- Server *Srv;
-
public:
-
- ModuleRedirect(Server* Me)
- : Module::Module(Me)
- {
- Srv = Me;
- 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;
-
- if (!IsValidChannelName(ChanToJoin.c_str()))
+ if (!ServerInstance->IsChannel(parameter))
{
- WriteServ(user->fd,"403 %s %s :Invalid channel name",user->nick, ChanToJoin.c_str());
- return 0;
+ source->WriteNumeric(ERR_NOSUCHCHANNEL, "%s :Invalid channel name", parameter.c_str());
+ return MODEACTION_DENY;
}
+ }
- c = Srv->FindChannel(ChanToJoin);
- 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 ((c == target) || (c->IsModeSet('L')))
- {
- WriteServ(user->fd,"690 %s :Circular redirection, mode +L to %s not allowed.",user->nick,params[0].c_str());
- return 0;
- }
+ source->WriteNumeric(690, ":Target channel %s must exist to be set as a redirect.",parameter.c_str());
+ return MODEACTION_DENY;
+ }
+ else if (c->GetPrefixValue(source) < OP_VALUE)
+ {
+ source->WriteNumeric(690, ":You must be opped on %s to set it as a redirect.",parameter.c_str());
+ return MODEACTION_DENY;
}
}
- return 1;
+
+ if (channel->GetModeParameter(this) == 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
+ */
+ return MODEACTION_ALLOW;
}
- return 0;
+ else
+ {
+ if (channel->IsModeSet(this))
+ {
+ return MODEACTION_ALLOW;
+ }
+ }
+
+ 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')
+ {
+ if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"))
+ DisableAutoRegister();
+ }
+};
- void Implements(char* List)
+class ModuleRedirect : public Module
+{
+ Redirect re;
+ AntiRedirect re_u;
+ ChanModeReference limitmode;
+ bool UseUsermode;
+
+ public:
+ ModuleRedirect()
+ : re(this)
+ , re_u(this)
+ , limitmode(this, "limit")
{
- List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnExtendedMode] = 1;
}
- virtual void On005Numeric(std::string &output)
+ void init() CXX11_OVERRIDE
{
- InsertMode(output, "L", 3);
+ /* Setting this here so it isn't changable by rehasing the config later. */
+ UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
}
-
- virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
+
+ 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'))
+ if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
{
- if (Srv->CountUsers(chan) >= chan->limit)
+ if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
{
- 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;
+ std::string channel = chan->GetModeParameter(&re);
+
+ /* sometimes broken ulines can make circular or chained +L, avoid this */
+ Channel* destchan = ServerInstance->FindChan(channel);
+ if (destchan && destchan->IsModeSet(re))
+ {
+ user->WriteNumeric(470, "%s * :You may not join this channel. A redirect is set, but you may not be redirected as it is a circular loop.", cname.c_str());
+ 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, "%s %s :Force redirection stopped.", cname.c_str(), channel.c_str());
+ return MOD_RES_DENY;
+ }
+ else
+ {
+ user->WriteNumeric(470, "%s %s :You may not join this channel, so you are automatically being transferred to the redirect channel.", cname.c_str(), channel.c_str());
+ Channel::JoinUser(user, channel);
+ return MOD_RES_DENY;
+ }
}
}
}
- return 0;
- }
-
- virtual ~ModuleRedirect()
- {
- }
-
- virtual Version GetVersion()
- {
- return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
+ return MOD_RES_PASSTHRU;
}
-};
-
-class ModuleRedirectFactory : public ModuleFactory
-{
- public:
- ModuleRedirectFactory()
+ Version GetVersion() CXX11_OVERRIDE
{
+ return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
}
-
- ~ModuleRedirectFactory()
- {
- }
-
- virtual Module * CreateModule(Server* Me)
- {
- return new ModuleRedirect(Me);
- }
-
};
-
-extern "C" void * init_module( void )
-{
- return new ModuleRedirectFactory;
-}
-
+MODULE_INIT(ModuleRedirect)
projects / user / henk / code / inspircd.git / blobdiff