]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_redirect.cpp
Improve UserManager::QuitUser() and related code
[user/henk/code/inspircd.git] / src / modules / m_redirect.cpp
index 7cbe645678a1f9ddc48cecbd7607fe03badc6723..5fc97d3c5bd577a5b1dd439555f6e57afb542715 100644 (file)
@@ -1,19 +1,28 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ *   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 program is free but copyrighted software; see
- *            the file COPYING for details.
+ * 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) */
+#include "inspircd.h"
 
 /** Handle channel mode +L
  */
@@ -28,43 +37,40 @@ class Redirect : public ModeHandler
                {
                        if (IS_LOCAL(source))
                        {
-                               if (!ServerInstance->IsChannel(parameter.c_str(), ServerInstance->Config->Limits.ChanMax))
+                               if (!ServerInstance->IsChannel(parameter))
                                {
-                                       source->WriteNumeric(403, "%s %s :Invalid channel name", source->nick.c_str(), parameter.c_str());
-                                       parameter.clear();
+                                       source->WriteNumeric(ERR_NOSUCHCHANNEL, "%s :Invalid channel name", parameter.c_str());
                                        return MODEACTION_DENY;
                                }
                        }
 
-                       if (IS_LOCAL(source) && !IS_OPER(source))
+                       if (IS_LOCAL(source) && !source->IsOper())
                        {
                                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();
+                                       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, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(),parameter.c_str());
-                                       parameter.clear();
+                                       source->WriteNumeric(690, ":You must be opped on %s to set it as a redirect.",parameter.c_str());
                                        return MODEACTION_DENY;
                                }
                        }
 
+                       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
                         */
-                       channel->SetModeParam('L', parameter);
                        return MODEACTION_ALLOW;
                }
                else
                {
-                       if (channel->IsModeSet('L'))
+                       if (channel->IsModeSet(this))
                        {
-                               channel->SetModeParam('L', "");
                                return MODEACTION_ALLOW;
                        }
                }
@@ -74,59 +80,78 @@ class Redirect : public ModeHandler
        }
 };
 
-class ModuleRedirect : public Module
+/** 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();
+               }
+};
 
+class ModuleRedirect : public Module
+{
        Redirect re;
+       AntiRedirect re_u;
+       ChanModeReference limitmode;
+       bool UseUsermode;
 
  public:
-
        ModuleRedirect()
                : re(this)
+               , re_u(this)
+               , limitmode(this, "limit")
        {
-
-               if (!ServerInstance->Modes->AddMode(&re))
-                       throw ModuleException("Could not add new modes!");
-               Implementation eventlist[] = { I_OnUserPreJoin };
-               ServerInstance->Modules->Attach(eventlist, this, 1);
        }
 
+       void init() CXX11_OVERRIDE
+       {
+               /* Setting this here so it isn't changable by rehasing the config later. */
+               UseUsermode = ServerInstance->Config->ConfValue("redirect")->getBool("antiredirect");
+       }
 
-       virtual ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
+       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') && chan->IsModeSet('l'))
+                       if (chan->IsModeSet(re) && chan->IsModeSet(limitmode))
                        {
-                               if (chan->GetUserCounter() >= atoi(chan->GetModeParameter('l').c_str()))
+                               if (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter(limitmode)))
                                {
-                                       std::string channel = chan->GetModeParameter('L');
+                                       std::string channel = chan->GetModeParameter(&re);
 
                                        /* sometimes broken ulines can make circular or chained +L, avoid this */
-                                       Channel* destchan = NULL;
-                                       destchan = ServerInstance->FindChan(channel);
-                                       if (destchan && destchan->IsModeSet('L'))
+                                       Channel* destchan = ServerInstance->FindChan(channel);
+                                       if (destchan && destchan->IsModeSet(re))
                                        {
-                                               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);
+                                               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;
                                        }
-
-                                       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()
+       Version GetVersion() CXX11_OVERRIDE
        {
-               return Version("Provides channel mode +L (limit redirection)", VF_COMMON | VF_VENDOR);
+               return Version("Provides channel mode +L (limit redirection) and user mode +L (no forced redirection)", VF_VENDOR);
        }
 };