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 ModeHandler
32 Redirect(Module* Creator) : ModeHandler(Creator, "redirect", 'L', PARAM_SETONLY, MODETYPE_CHANNEL) { }
34 ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding)
40 if (!ServerInstance->IsChannel(parameter))
42 source->WriteNumeric(403, "%s %s :Invalid channel name", source->nick.c_str(), parameter.c_str());
43 return MODEACTION_DENY;
47 if (IS_LOCAL(source) && !source->IsOper())
49 Channel* c = ServerInstance->FindChan(parameter);
52 source->WriteNumeric(690, "%s :Target channel %s must exist to be set as a redirect.",source->nick.c_str(),parameter.c_str());
53 return MODEACTION_DENY;
55 else if (c->GetPrefixValue(source) < OP_VALUE)
57 source->WriteNumeric(690, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(),parameter.c_str());
58 return MODEACTION_DENY;
62 if (channel->GetModeParameter(this) == parameter)
63 return MODEACTION_DENY;
65 * We used to do some checking for circular +L here, but there is no real need for this any more especially as we
66 * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t
68 return MODEACTION_ALLOW;
72 if (channel->IsModeSet(this))
74 return MODEACTION_ALLOW;
78 return MODEACTION_DENY;
83 /** Handles usermode +L to stop forced redirection and print an error.
85 class AntiRedirect : public SimpleUserModeHandler
88 AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L')
90 if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"))
91 DisableAutoRegister();
95 class ModuleRedirect : public Module
99 ChanModeReference limitmode;
106 , limitmode(this, "limit")
110 void init() CXX11_OVERRIDE
112 /* Setting this here so it isn't changable by rehasing the config later. */
113 UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
116 ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
120 if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
122 if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
124 std::string channel = chan->GetModeParameter(&re);
126 /* sometimes broken ulines can make circular or chained +L, avoid this */
127 Channel* destchan = ServerInstance->FindChan(channel);
128 if (destchan && destchan->IsModeSet(re))
130 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.c_str());
133 /* We check the bool value here to make sure we have it enabled, if we don't then
134 usermode +L might be assigned to something else. */
135 if (UseUsermode && user->IsModeSet(re_u))
137 user->WriteNumeric(470, "%s %s %s :Force redirection stopped.", user->nick.c_str(), cname.c_str(), channel.c_str());
142 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.c_str(), channel.c_str());
143 Channel::JoinUser(user, channel);
149 return MOD_RES_PASSTHRU;
152 Version GetVersion() CXX11_OVERRIDE
154 return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
158 MODULE_INIT(ModuleRedirect)