]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_redirect.cpp
Someone is getting slapped for this; the new hidesplits/hidebans behavior doesn't...
[user/henk/code/inspircd.git] / src / modules / m_redirect.cpp
index 6e239cb088fd48eaba3d799ea3f3c604cbc83f3f..cf0174cc600e1e49148fbd74ed9c27bae0c3d281 100644 (file)
@@ -2,56 +2,79 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *               <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
  *
  * ---------------------------------------------------
  */
 
-using namespace std;
-
-#include <stdio.h>
 #include "users.h"
 #include "channels.h"
 #include "modules.h"
-#include "helperfuncs.h"
+#include "inspircd.h"
 
 /* $ModDesc: Provides channel mode +L (limit redirection) */
 
+/** Handle channel mode +L
+ */
 class Redirect : public ModeHandler
 {
-       Server* Srv;
  public:
-       Redirect(Server* s) : ModeHandler('L', 1, 0, false, MODETYPE_CHANNEL, false), Srv(s) { }
+       Redirect(InspIRCd* Instance) : ModeHandler(Instance, 'L', 1, 0, false, MODETYPE_CHANNEL, false) { }
 
+        ModePair ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter)
+        {
+                if (channel->IsModeSet('L'))
+                        return std::make_pair(true, channel->GetModeParameter('L'));
+                else
+                        return std::make_pair(false, parameter);
+        }
+
+        bool CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
+       {
+               /* When TS is equal, the alphabetically later one wins */
+               return (their_param < our_param);
+        }
+       
        ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
        {
                if (adding)
                {
                        chanrec* c = NULL;
 
-                       if (!IsValidChannelName(parameter.c_str()))
+                       if (!ServerInstance->IsChannel(parameter.c_str()))
                        {
-                               WriteServ(source->fd,"403 %s %s :Invalid channel name",source->nick, parameter.c_str());
+                               source->WriteServ("403 %s %s :Invalid channel name",source->nick, parameter.c_str());
                                parameter = "";
                                return MODEACTION_DENY;
                        }
 
-                       c = Srv->FindChannel(parameter);
+                       c = ServerInstance->FindChan(parameter);
                        if (c)
                        {
                                /* Fix by brain: Dont let a channel be linked to *itself* either */
-                               if ((c == channel) || (c->IsModeSet('L')))
+                               if (IS_LOCAL(source))
                                {
-                                       WriteServ(source->fd,"690 %s :Circular redirection, mode +L to %s not allowed.",source->nick,parameter.c_str());
-                                       parameter = "";
-                                       return MODEACTION_DENY;
+                                       if ((c == channel) || (c->IsModeSet('L')))
+                                       {
+                                               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());
+                                               parameter = "";
+                                               return MODEACTION_DENY;
+                                       }
+                                       else
+                                       {
+                                               for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
+                                               {
+                                                       if ((i->second != channel) && (i->second->IsModeSet('L')) && (irc::string(i->second->GetModeParameter('L').c_str()) == irc::string(channel->name)))
+                                                       {
+                                                               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);
+                                                               return MODEACTION_DENY;
+                                                       }
+                                               }
+                                       }
                                }
                        }
 
@@ -75,40 +98,46 @@ class Redirect : public ModeHandler
 
 class ModuleRedirect : public Module
 {
-       Server *Srv;
+       
        Redirect* re;
        
  public:
  
-       ModuleRedirect(Server* Me)
+       ModuleRedirect(InspIRCd* Me)
                : Module::Module(Me)
        {
-               Srv = Me;
-               re = new Redirect(Me);
-               Srv->AddMode(re, 'L');
+               
+               re = new Redirect(ServerInstance);
+               if (!ServerInstance->AddMode(re, 'L'))
+                       throw ModuleException("Could not add new modes!");
        }
        
        void Implements(char* List)
        {
-               List[I_On005Numeric] = List[I_OnUserPreJoin] = 1;
+               List[I_OnUserPreJoin] = 1;
        }
 
-       virtual void On005Numeric(std::string &output)
-       {
-               InsertMode(output, "L", 3);
-       }
-       
-       virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
+       virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
        {
                if (chan)
                {
-                       if (chan->IsModeSet('L'))
+                       if (chan->IsModeSet('L') && chan->limit)
                        {
-                               if (Srv->CountUsers(chan) >= chan->limit)
+                               if (chan->GetUserCounter() >= chan->limit)
                                {
                                        std::string channel = chan->GetModeParameter('L');
-                                       WriteServ(user->fd,"470 %s :%s has become full, so you are automatically being transferred to the linked channel %s",user->nick,cname,channel.c_str());
-                                       Srv->JoinUserToChannel(user,channel.c_str(),"");
+
+                                       /* sometimes broken ulines can make circular or chained +L, avoid this */
+                                       chanrec* destchan = NULL;
+                                       destchan = ServerInstance->FindChan(channel);
+                                       if (destchan && destchan->IsModeSet('L'))
+                                       {
+                                               user->WriteServ("470 %s :%s is full, but has a circular redirect (+L), not following redirection to %s", user->nick, cname, channel.c_str());
+                                               return 1;
+                                       }
+
+                                       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());
+                                       chanrec::JoinUser(ServerInstance, user, channel.c_str(), false);
                                        return 1;
                                }
                        }
@@ -118,12 +147,13 @@ class ModuleRedirect : public Module
 
        virtual ~ModuleRedirect()
        {
+               ServerInstance->Modes->DelMode(re);
                DELETE(re);
        }
        
        virtual Version GetVersion()
        {
-               return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
+               return Version(1, 1, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
        }
 };
 
@@ -139,7 +169,7 @@ class ModuleRedirectFactory : public ModuleFactory
        {
        }
        
-       virtual Module * CreateModule(Server* Me)
+       virtual Module * CreateModule(InspIRCd* Me)
        {
                return new ModuleRedirect(Me);
        }