-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include "users.h"\r#include "channels.h"\r#include "modules.h"\r\r/* $ModDesc: Provides channel mode +L (limit redirection) */\r\r/** Handle channel mode +L\r */\rclass Redirect : public ModeHandler\r{\r public:\r Redirect(InspIRCd* Instance) : ModeHandler(Instance, 'L', 1, 0, false, MODETYPE_CHANNEL, false) { }\r\r ModePair ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter)\r {\r if (channel->IsModeSet('L'))\r return std::make_pair(true, channel->GetModeParameter('L'));\r else\r return std::make_pair(false, parameter);\r }\r\r bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)\r {\r /* When TS is equal, the alphabetically later one wins */\r return (their_param < our_param);\r }\r \r ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)\r {\r if (adding)\r {\r chanrec* c = NULL;\r\r if (!ServerInstance->IsChannel(parameter.c_str()))\r {\r source->WriteServ("403 %s %s :Invalid channel name",source->nick, parameter.c_str());\r parameter.clear();\r return MODEACTION_DENY;\r }\r\r c = ServerInstance->FindChan(parameter);\r if (c)\r {\r /* Fix by brain: Dont let a channel be linked to *itself* either */\r if (IS_LOCAL(source))\r {\r if ((c == channel) || (c->IsModeSet('L')))\r {\r 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());\r parameter.clear();\r return MODEACTION_DENY;\r }\r else\r {\r for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)\r {\r if ((i->second != channel) && (i->second->IsModeSet('L')) && (irc::string(i->second->GetModeParameter('L').c_str()) == irc::string(channel->name)))\r {\r 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);\r return MODEACTION_DENY;\r }\r }\r }\r }\r }\r\r channel->SetMode('L', true);\r channel->SetModeParam('L', parameter.c_str(), true);\r return MODEACTION_ALLOW;\r }\r else\r {\r if (channel->IsModeSet('L'))\r {\r channel->SetMode('L', false);\r return MODEACTION_ALLOW;\r }\r }\r\r return MODEACTION_DENY;\r \r }\r};\r\rclass ModuleRedirect : public Module\r{\r \r Redirect* re;\r \r public:\r \r ModuleRedirect(InspIRCd* Me)\r : Module(Me)\r {\r \r re = new Redirect(ServerInstance);\r if (!ServerInstance->AddMode(re, 'L'))\r throw ModuleException("Could not add new modes!");\r }\r \r void Implements(char* List)\r {\r List[I_OnUserPreJoin] = 1;\r }\r\r virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)\r {\r if (chan)\r {\r if (chan->IsModeSet('L') && chan->limit)\r {\r if (chan->GetUserCounter() >= chan->limit)\r {\r std::string channel = chan->GetModeParameter('L');\r\r /* sometimes broken ulines can make circular or chained +L, avoid this */\r chanrec* destchan = NULL;\r destchan = ServerInstance->FindChan(channel);\r if (destchan && destchan->IsModeSet('L'))\r {\r user->WriteServ("470 %s :%s is full, but has a circular redirect (+L), not following redirection to %s", user->nick, cname, channel.c_str());\r return 1;\r }\r\r 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());\r chanrec::JoinUser(ServerInstance, user, channel.c_str(), false, "", ServerInstance->Time(true));\r return 1;\r }\r }\r }\r return 0;\r }\r\r virtual ~ModuleRedirect()\r {\r ServerInstance->Modes->DelMode(re);\r DELETE(re);\r }\r \r virtual Version GetVersion()\r {\r return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);\r }\r};\r\rMODULE_INIT(ModuleRedirect)\r
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * 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 "inspircd.h"
+
+/* $ModDesc: Provides channel mode +L (limit redirection) and usermode +L (no forced redirection) */
+
+/** Handle channel mode +L
+ */
+class Redirect : public ModeHandler
+{
+ public:
+ 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 (adding)
+ {
+ if (IS_LOCAL(source))
+ {
+ if (!ServerInstance->IsChannel(parameter.c_str(), ServerInstance->Config->Limits.ChanMax))
+ {
+ source->WriteNumeric(403, "%s %s :Invalid channel name", source->nick.c_str(), parameter.c_str());
+ parameter.clear();
+ return MODEACTION_DENY;
+ }
+ }
+
+ if (IS_LOCAL(source) && !IS_OPER(source))
+ {
+ Channel* c = ServerInstance->FindChan(parameter);
+ if (!c)
+ {
+ 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;
+ }
+ }
+
+ 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 ModuleRedirect : public Module
+{
+
+ Redirect re;
+ AntiRedirect re_u;
+ bool UseUsermode;
+
+ public:
+
+ ModuleRedirect()
+ : re(this), re_u(this)
+ {
+ }
+
+ 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 ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
+ {
+ 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()
+ {
+ }
+
+ 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