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[user/henk/code/inspircd.git] / src / modules / m_banredirect.cpp
index 19a34bb27f3340d205c7eff5e43248f7dc54b129..1397692672813811f1667f7bb6c016166ed386e8 100644 (file)
@@ -2,8 +2,8 @@
  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
  */
 
 #include "inspircd.h"
-#include "mode.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
+#include "u_listmode.h"
 
 /* $ModDesc: Allows an extended ban (+b) syntax redirecting banned users to another channel */
+/* $ModDep: ../../include/u_listmode.h */
 
-/* Originally written by Om, January 2007
+/* Originally written by Om, January 2009
  */
 
-class BanRedirectEntry
+class BanRedirectEntry : public classbase
 {
  public:
        std::string targetchan;
@@ -47,7 +45,7 @@ class BanRedirect : public ModeWatcher
        {
        }
 
-       bool BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &param, bool adding, ModeType type)
+       bool BeforeMode(User* source, User* dest, Channel* channel, std::string &param, bool adding, ModeType type, bool)
        {
                /* nick!ident@host -> nick!ident@host
                 * nick!ident@host#chan -> nick!ident@host#chan
@@ -55,22 +53,25 @@ class BanRedirect : public ModeWatcher
                 * nick!ident#chan -> nick!ident@*#chan
                 * nick#chan -> nick!*@*#chan
                 */
-               
+
                if(channel && (type == MODETYPE_CHANNEL) && param.length())
                {
                        BanRedirectList* redirects;
-                       
+
                        std::string mask[4];
                        enum { NICK, IDENT, HOST, CHAN } current = NICK;
                        std::string::iterator start_pos = param.begin();
                        long maxbans = channel->GetMaxBans();
-               
-                       if(channel->bans.size() > static_cast<unsigned>(maxbans))
+
+                       if (param.length() >= 2 && param[1] == ':')
+                               return true;
+
+                       if(adding && (channel->bans.size() > static_cast<unsigned>(maxbans)))
                        {
-                               source->WriteServ("478 %s %s :Channel ban list for %s is full (maximum entries for this channel is %d)", source->nick, channel->name, channel->name, maxbans);
+                               source->WriteNumeric(478, "%s %s :Channel ban list for %s is full (maximum entries for this channel is %ld)", source->nick.c_str(), channel->name.c_str(), channel->name.c_str(), maxbans);
                                return false;
                        }
-                       
+
                        for(std::string::iterator curr = start_pos; curr != param.end(); curr++)
                        {
                                switch(*curr)
@@ -92,19 +93,19 @@ class BanRedirect : public ModeWatcher
                                                break;
                                }
                        }
-                               
+
                        if(mask[current].empty())
                        {
-                               mask[current].assign(start_pos, param.end());   
+                               mask[current].assign(start_pos, param.end());
                        }
-                       
+
                        /* nick@host wants to be changed to *!nick@host rather than nick!*@host... */
                        if(mask[NICK].length() && mask[HOST].length() && mask[IDENT].empty())
                        {
                                /* std::string::swap() is fast - it runs in constant time */
                                mask[NICK].swap(mask[IDENT]);
                        }
-                               
+
                        for(int i = 0; i < 3; i++)
                        {
                                if(mask[i].empty())
@@ -112,16 +113,16 @@ class BanRedirect : public ModeWatcher
                                        mask[i].assign("*");
                                }
                        }
-                               
+
                        param.assign(mask[NICK]).append(1, '!').append(mask[IDENT]).append(1, '@').append(mask[HOST]);
-       
+
                        if(mask[CHAN].length())
                        {
-                               if(Srv->IsChannel(mask[CHAN].c_str()))
+                               if(!IS_LOCAL(source) || Srv->IsChannel(mask[CHAN].c_str(), ServerInstance->Config->Limits.ChanMax))
                                {
-                                       if(irc::string(channel->name) == irc::string(mask[CHAN].c_str()))
+                                       if (assign(channel->name) == mask[CHAN])
                                        {
-                                               source->WriteServ("690 %s %s :You cannot set a ban redirection to the channel the ban is on", source->nick, channel->name);
+                                               source->WriteNumeric(690, "%s %s :You cannot set a ban redirection to the channel the ban is on", source->nick.c_str(), channel->name.c_str());
                                                return false;
                                        }
                                        else
@@ -134,10 +135,10 @@ class BanRedirect : public ModeWatcher
                                                                redirects = new BanRedirectList;
                                                                channel->Extend("banredirects", redirects);
                                                        }
-                               
+
                                                        /* Here 'param' doesn't have the channel on it yet */
                                                        redirects->push_back(BanRedirectEntry(mask[CHAN].c_str(), param.c_str()));
-                                                       
+
                                                        /* Now it does */
                                                        param.append(mask[CHAN]);
                                                }
@@ -147,25 +148,25 @@ class BanRedirect : public ModeWatcher
                                                        if(channel->GetExt("banredirects", redirects))
                                                        {
                                                                /* But there were, so we need to remove the matching one if there is one */
-                                       
+
                                                                for(BanRedirectList::iterator redir = redirects->begin(); redir != redirects->end(); redir++)
                                                                {
                                                                        /* Ugly as fuck */
                                                                        if((irc::string(redir->targetchan.c_str()) == irc::string(mask[CHAN].c_str())) && (irc::string(redir->banmask.c_str()) == irc::string(param.c_str())))
                                                                        {
                                                                                redirects->erase(redir);
-                                                                               
+
                                                                                if(redirects->empty())
                                                                                {
-                                                                                       DELETE(redirects);
+                                                                                       delete redirects;
                                                                                        channel->Shrink("banredirects");
                                                                                }
-                                                                               
+
                                                                                break;
                                                                        }
                                                                }
                                                        }
-                                                       
+
                                                        /* Append the channel so the default +b handler can remove the entry too */
                                                        param.append(mask[CHAN]);
                                                }
@@ -173,12 +174,12 @@ class BanRedirect : public ModeWatcher
                                }
                                else
                                {
-                                       source->WriteServ("403 %s %s :Invalid channel name in redirection (%s)", source->nick, channel->name, mask[CHAN].c_str());
+                                       source->WriteNumeric(403, "%s %s :Invalid channel name in redirection (%s)", source->nick.c_str(), channel->name.c_str(), mask[CHAN].c_str());
                                        return false;
                                }
                        }
                }
-               
+
                return true;
        }
 };
@@ -186,76 +187,81 @@ class BanRedirect : public ModeWatcher
 class ModuleBanRedirect : public Module
 {
        BanRedirect* re;
-       InspIRCd* Srv;
        bool nofollow;
-       
+       Module* ExceptionModule;
+
  public:
        ModuleBanRedirect(InspIRCd* Me)
-       : Module(Me), Srv(Me)
+       : Module(Me)
        {
                re = new BanRedirect(Me);
                nofollow = false;
-               
-               if(!Srv->AddModeWatcher(re))
+
+               if(!ServerInstance->Modes->AddModeWatcher(re))
+               {
+                       delete re;
                        throw ModuleException("Could not add mode watcher");
+               }
+
+               OnRehash(NULL, "");
+
+               Implementation list[] = { I_OnRehash, I_OnUserPreJoin, I_OnChannelDelete, I_OnCleanup };
+               Me->Modules->Attach(list, this, 4);
+
        }
-       
-       void Implements(char* List)
-       {
-               List[I_OnUserPreJoin] = List[I_OnChannelDelete] = List[I_OnCleanup] = 1;
-       }
-       
-       virtual void OnChannelDelete(chanrec* chan)
+
+       virtual void OnChannelDelete(Channel* chan)
        {
                OnCleanup(TYPE_CHANNEL, chan);
        }
-       
+
        virtual void OnCleanup(int target_type, void* item)
        {
                if(target_type == TYPE_CHANNEL)
                {
-                       chanrec* chan = static_cast<chanrec*>(item);
+                       Channel* chan = static_cast<Channel*>(item);
                        BanRedirectList* redirects;
-                       
+
                        if(chan->GetExt("banredirects", redirects))
                        {
-                               irc::modestacker modestack(false);
+                               irc::modestacker modestack(ServerInstance, false);
                                StringDeque stackresult;
-                               const char* mode_junk[MAXMODES+1];
-                               userrec* myhorriblefakeuser = new userrec(Srv);
-                               myhorriblefakeuser->SetFd(FD_MAGIC_NUMBER);
-                               
-                               mode_junk[0] = chan->name;
-                               
+                               std::vector<std::string> mode_junk;
+                               mode_junk.push_back(chan->name);
+
                                for(BanRedirectList::iterator i = redirects->begin(); i != redirects->end(); i++)
                                {
                                        modestack.Push('b', i->targetchan.insert(0, i->banmask));
                                }
-                               
+
                                for(BanRedirectList::iterator i = redirects->begin(); i != redirects->end(); i++)
                                {
                                        modestack.PushPlus();
                                        modestack.Push('b', i->banmask);
                                }
-                               
+
                                while(modestack.GetStackedLine(stackresult))
                                {
                                        for(StringDeque::size_type i = 0; i < stackresult.size(); i++)
                                        {
-                                               mode_junk[i+1] = stackresult[i].c_str();
+                                               mode_junk.push_back(stackresult[i]);
                                        }
-                                       
-                                       Srv->SendMode(mode_junk, stackresult.size() + 1, myhorriblefakeuser);
+
+                                       ServerInstance->SendMode(mode_junk, ServerInstance->FakeClient);
                                }
-                               
-                               DELETE(myhorriblefakeuser);
-                               DELETE(redirects);
+
+                               delete redirects;
                                chan->Shrink("banredirects");
                        }
                }
        }
 
-       virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
+       virtual void OnRehash(User* user, const std::string &param)
+       {
+               ExceptionModule = ServerInstance->Modules->Find("m_banexception.so");
+       }
+
+       virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
        {
                /* This prevents recursion when a user sets multiple ban redirects in a chain
                 * (thanks Potter)
@@ -267,34 +273,48 @@ class ModuleBanRedirect : public Module
                if (chan)
                {
                        BanRedirectList* redirects;
-                       
+
                        if(chan->GetExt("banredirects", redirects))
                        {
                                /* We actually had some ban redirects to check */
-                               
+
                                /* This was replaced with user->MakeHostIP() when I had a snprintf(), but MakeHostIP() doesn't seem to add the nick.
                                 * Maybe we should have a GetFullIPHost() or something to match GetFullHost() and GetFullRealHost?
                                 */
+
+                               if (ExceptionModule)
+                               {
+                                       ListModeRequest n(this, ExceptionModule, user, chan);
+                                       /* Users with ban exceptions are allowed to join without being redirected */
+                                       if (n.Send())
+                                               return 0;
+                               }
+
                                std::string ipmask(user->nick);
                                ipmask.append(1, '!').append(user->MakeHostIP());
-                               
+
                                for(BanRedirectList::iterator redir = redirects->begin(); redir != redirects->end(); redir++)
                                {
-                                       if(Srv->MatchText(user->GetFullRealHost(), redir->banmask) || Srv->MatchText(user->GetFullHost(), redir->banmask) || Srv->MatchText(ipmask, redir->banmask))
+                                       if(InspIRCd::Match(user->GetFullRealHost(), redir->banmask) || InspIRCd::Match(user->GetFullHost(), redir->banmask) || InspIRCd::MatchCIDR(ipmask, redir->banmask))
                                        {
                                                /* tell them they're banned and are being transferred */
-                                               chanrec* destchan = Srv->FindChan(redir->targetchan);
-                                               
-                                               if(destchan && Srv->FindModule("m_redirect.so") && destchan->IsModeSet('L') && destchan->limit && (destchan->GetUserCounter() >= destchan->limit))
+                                               Channel* destchan = ServerInstance->FindChan(redir->targetchan);
+                                               std::string destlimit;
+
+                                               if (destchan)
+                                                       destlimit = destchan->GetModeParameter('l');
+
+                                               if(destchan && ServerInstance->Modules->Find("m_redirect.so") && destchan->IsModeSet('L') && !destlimit.empty() && (destchan->GetUserCounter() >= atoi(destlimit.c_str())))
                                                {
-                                                       user->WriteServ("474 %s %s :Cannot join channel (You are banned)", user->nick, chan->name);
+                                                       user->WriteNumeric(474, "%s %s :Cannot join channel (You are banned)", user->nick.c_str(), chan->name.c_str());
                                                        return 1;
                                                }
                                                else
                                                {
-                                                       user->WriteServ("470 %s :You are banned from %s. You are being automatically redirected to %s", user->nick, chan->name, redir->targetchan.c_str());
+                                                       user->WriteNumeric(474, "%s %s :Cannot join channel (You are banned)", user->nick.c_str(), chan->name.c_str());
+                                                       user->WriteNumeric(470, "%s %s %s :You are banned from this channel, so you are automatically transfered to the redirected channel.", user->nick.c_str(), chan->name.c_str(), redir->targetchan.c_str());
                                                        nofollow = true;
-                                                       chanrec::JoinUser(Srv, user, redir->targetchan.c_str(), false, "", ServerInstance->Time(true));
+                                                       Channel::JoinUser(ServerInstance, user, redir->targetchan.c_str(), false, "", false, ServerInstance->Time());
                                                        nofollow = false;
                                                        return 1;
                                                }
@@ -307,37 +327,20 @@ class ModuleBanRedirect : public Module
 
        virtual ~ModuleBanRedirect()
        {
-               Srv->Modes->DelModeWatcher(re);
-               DELETE(re);
+               ServerInstance->Modes->DelModeWatcher(re);
+               delete re;
        }
-       
+
        virtual Version GetVersion()
        {
-               return Version(1, 0, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+               return Version("$Id$", VF_COMMON|VF_VENDOR, API_VERSION);
        }
-};
-
 
-class ModuleBanRedirectFactory : public ModuleFactory
-{
- public:
-       ModuleBanRedirectFactory()
-       {
-       }
-       
-       ~ModuleBanRedirectFactory()
+       void Prioritize()
        {
+               Module* banex = ServerInstance->Modules->Find("m_banexception.so");
+               ServerInstance->Modules->SetPriority(this, I_OnUserPreJoin, PRIORITY_BEFORE, &banex);
        }
-       
-       virtual Module * CreateModule(InspIRCd* Me)
-       {
-               return new ModuleBanRedirect(Me);
-       }
-       
 };
 
-
-extern "C" DllExport void * init_module( void )
-{
-       return new ModuleBanRedirectFactory;
-}
+MODULE_INIT(ModuleBanRedirect)