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());
44 return MODEACTION_DENY;
48 if (IS_LOCAL(source) && !source->IsOper())
50 Channel* c = ServerInstance->FindChan(parameter);
53 source->WriteNumeric(690, "%s :Target channel %s must exist to be set as a redirect.",source->nick.c_str(),parameter.c_str());
55 return MODEACTION_DENY;
57 else if (c->GetPrefixValue(source) < OP_VALUE)
59 source->WriteNumeric(690, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(),parameter.c_str());
61 return MODEACTION_DENY;
65 if (channel->GetModeParameter(this) == parameter)
66 return MODEACTION_DENY;
68 * We used to do some checking for circular +L here, but there is no real need for this any more especially as we
69 * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t
71 return MODEACTION_ALLOW;
75 if (channel->IsModeSet(this))
77 return MODEACTION_ALLOW;
81 return MODEACTION_DENY;
86 /** Handles usermode +L to stop forced redirection and print an error.
88 class AntiRedirect : public SimpleUserModeHandler
91 AntiRedirect(Module* Creator) : SimpleUserModeHandler(Creator, "antiredirect", 'L')
93 if (!ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect"))
94 DisableAutoRegister();
98 class ModuleRedirect : public Module
102 ChanModeReference limitmode;
109 , limitmode(this, "limit")
113 void init() CXX11_OVERRIDE
115 /* Setting this here so it isn't changable by rehasing the config later. */
116 UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
119 ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
123 if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
125 if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
127 std::string channel = chan->GetModeParameter(&re);
129 /* sometimes broken ulines can make circular or chained +L, avoid this */
130 Channel* destchan = ServerInstance->FindChan(channel);
131 if (destchan && destchan->IsModeSet(re))
133 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());
136 /* We check the bool value here to make sure we have it enabled, if we don't then
137 usermode +L might be assigned to something else. */
138 if (UseUsermode && user->IsModeSet(re_u))
140 user->WriteNumeric(470, "%s %s %s :Force redirection stopped.", user->nick.c_str(), cname.c_str(), channel.c_str());
145 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());
146 Channel::JoinUser(user, channel);
152 return MOD_RES_PASSTHRU;
155 Version GetVersion() CXX11_OVERRIDE
157 return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
161 MODULE_INIT(ModuleRedirect)