2 * InspIRCd -- Internet Relay Chat Daemon
4 * Copyright (C) 2012 Shawn Smith <ShawnSmith0828@gmail.com>
5 * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
6 * Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
7 * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
8 * Copyright (C) 2004, 2006 Craig Edwards <craigedwards@brainbox.cc>
9 * Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
11 * This file is part of InspIRCd. InspIRCd is free software: you can
12 * redistribute it and/or modify it under the terms of the GNU General Public
13 * License as published by the Free Software Foundation, version 2.
15 * This program is distributed in the hope that it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 /** Handle channel mode +L
29 class Redirect : public ParamMode<Redirect, LocalStringExt>
32 Redirect(Module* Creator)
33 : ParamMode<Redirect, LocalStringExt>(Creator, "redirect", 'L') { }
35 ModeAction OnSet(User* source, Channel* channel, std::string& parameter)
39 if (!ServerInstance->IsChannel(parameter))
41 source->WriteNumeric(ERR_NOSUCHCHANNEL, "%s :Invalid channel name", parameter.c_str());
42 return MODEACTION_DENY;
46 if (IS_LOCAL(source) && !source->IsOper())
48 Channel* c = ServerInstance->FindChan(parameter);
51 source->WriteNumeric(690, ":Target channel %s must exist to be set as a redirect.",parameter.c_str());
52 return MODEACTION_DENY;
54 else if (c->GetPrefixValue(source) < OP_VALUE)
56 source->WriteNumeric(690, ":You must be opped on %s to set it as a redirect.",parameter.c_str());
57 return MODEACTION_DENY;
62 * We used to do some checking for circular +L here, but there is no real need for this any more especially as we
63 * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t
65 ext.set(channel, parameter);
66 return MODEACTION_ALLOW;
69 void SerializeParam(Channel* chan, const std::string* str, std::string& out)
75 /** Handles usermode +L to stop forced redirection and print an error.
77 class AntiRedirect : public SimpleUserModeHandler
80 AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L')
82 if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"))
83 DisableAutoRegister();
87 class ModuleRedirect : public Module
91 ChanModeReference limitmode;
98 , limitmode(this, "limit")
102 void init() CXX11_OVERRIDE
104 /* Setting this here so it isn't changable by rehasing the config later. */
105 UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
108 ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
112 if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
114 if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
116 const std::string& channel = *re.ext.get(chan);
118 /* sometimes broken ulines can make circular or chained +L, avoid this */
119 Channel* destchan = ServerInstance->FindChan(channel);
120 if (destchan && destchan->IsModeSet(re))
122 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());
125 /* We check the bool value here to make sure we have it enabled, if we don't then
126 usermode +L might be assigned to something else. */
127 if (UseUsermode && user->IsModeSet(re_u))
129 user->WriteNumeric(470, "%s %s :Force redirection stopped.", cname.c_str(), channel.c_str());
134 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());
135 Channel::JoinUser(user, channel);
141 return MOD_RES_PASSTHRU;
144 Version GetVersion() CXX11_OVERRIDE
146 return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
150 MODULE_INIT(ModuleRedirect)