]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_banredirect.cpp
Remove unnecessary header traffic
[user/henk/code/inspircd.git] / src / modules / m_banredirect.cpp
index a185b8c4875a30e4a365bb5d5d05444e018cc83c..9fa36b5169b045572bb69d8e98505180e05fc0aa 100644 (file)
  * ---------------------------------------------------
  */
 
-#include "mode.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
 #include "inspircd.h"
+#include "u_listmode.h"
 
 /* $ModDesc: Allows an extended ban (+b) syntax redirecting banned users to another channel */
 
+/* Originally written by Om, January 2007
+ */
+
 class BanRedirectEntry
 {
  public:
@@ -46,8 +46,6 @@ class BanRedirect : public ModeWatcher
 
        bool BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &param, bool adding, ModeType type)
        {
-               // Srv->Log(DEBUG, "BeforeMode(%s, %s, %s, %s, %s, %s)", ((source && source->nick) ? source->nick : "NULL"), ((dest && dest->nick) ? dest->nick : "NULL"), ((channel && channel->name) ? channel->name : "NULL"), param.c_str(), (adding ? "true" : "false"), ((type == MODETYPE_CHANNEL) ? "MODETYPE_CHANNEL" : "MODETYPE_USER"));
-
                /* nick!ident@host -> nick!ident@host
                 * nick!ident@host#chan -> nick!ident@host#chan
                 * nick@host#chan -> nick!*@host#chan
@@ -64,7 +62,7 @@ class BanRedirect : public ModeWatcher
                        std::string::iterator start_pos = param.begin();
                        long maxbans = channel->GetMaxBans();
                
-                       if(channel->bans.size() > static_cast<unsigned>(maxbans))
+                       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);
                                return false;
@@ -96,6 +94,13 @@ class BanRedirect : public ModeWatcher
                        {
                                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++)
                        {
@@ -106,8 +111,6 @@ class BanRedirect : public ModeWatcher
                        }
                                
                        param.assign(mask[NICK]).append(1, '!').append(mask[IDENT]).append(1, '@').append(mask[HOST]);
-                       
-                       Srv->Log(DEBUG, "mask[NICK] = '%s', mask[IDENT] = '%s', mask[HOST] = '%s', mask[CHAN] = '%s'", mask[NICK].c_str(), mask[IDENT].c_str(), mask[HOST].c_str(), mask[CHAN].c_str());
        
                        if(mask[CHAN].length())
                        {
@@ -151,7 +154,7 @@ class BanRedirect : public ModeWatcher
                                                                                
                                                                                if(redirects->empty())
                                                                                {
-                                                                                       delete redirects;
+                                                                                       DELETE(redirects);
                                                                                        channel->Shrink("banredirects");
                                                                                }
                                                                                
@@ -171,8 +174,6 @@ class BanRedirect : public ModeWatcher
                                        return false;
                                }
                        }
-                               
-                       Srv->Log(DEBUG, "Changed param to: %s", param.c_str());
                }
                
                return true;
@@ -182,21 +183,25 @@ class BanRedirect : public ModeWatcher
 class ModuleBanRedirect : public Module
 {
        BanRedirect* re;
-       InspIRCd* Srv;
-       
+       bool nofollow;
+       Module* ExceptionModule;
+
  public:
        ModuleBanRedirect(InspIRCd* Me)
-       : Module::Module(Me), Srv(Me)
+       : Module(Me)
        {
                re = new BanRedirect(Me);
+               nofollow = false;
                
-               if(!Srv->AddModeWatcher(re))
+               if(!ServerInstance->AddModeWatcher(re))
                        throw ModuleException("Could not add mode watcher");
+
+               OnRehash(NULL, "");
        }
        
        void Implements(char* List)
        {
-               List[I_OnUserPreJoin] = List[I_OnChannelDelete] = List[I_OnCleanup] = 1;
+               List[I_OnRehash] = List[I_OnUserPreJoin] = List[I_OnChannelDelete] = List[I_OnCleanup] = 1;
        }
        
        virtual void OnChannelDelete(chanrec* chan)
@@ -215,8 +220,8 @@ class ModuleBanRedirect : public Module
                        {
                                irc::modestacker modestack(false);
                                StringDeque stackresult;
-                               const char* mode_junk[MAXMODES+1];
-                               userrec* myhorriblefakeuser = new userrec(Srv);
+                               const char* mode_junk[MAXMODES+2];
+                               userrec* myhorriblefakeuser = new userrec(ServerInstance);
                                myhorriblefakeuser->SetFd(FD_MAGIC_NUMBER);
                                
                                mode_junk[0] = chan->name;
@@ -239,18 +244,29 @@ class ModuleBanRedirect : public Module
                                                mode_junk[i+1] = stackresult[i].c_str();
                                        }
                                        
-                                       Srv->SendMode(mode_junk, stackresult.size() + 1, myhorriblefakeuser);
+                                       ServerInstance->SendMode(mode_junk, stackresult.size() + 1, myhorriblefakeuser);
                                }
                                
-                               delete myhorriblefakeuser;
-                               delete redirects;
+                               DELETE(myhorriblefakeuser);
+                               DELETE(redirects);
                                chan->Shrink("banredirects");
                        }
                }
        }
 
+       virtual void OnRehash(userrec* user, const std::string &param)
+       {
+               ExceptionModule = ServerInstance->FindModule("m_banexception.so");
+       }
+
        virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
        {
+               /* This prevents recursion when a user sets multiple ban redirects in a chain
+                * (thanks Potter)
+                */
+               if (nofollow)
+                       return 0;
+
                /* Return 1 to prevent the join, 0 to allow it */
                if (chan)
                {
@@ -263,28 +279,37 @@ class ModuleBanRedirect : public Module
                                /* 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());
-                               Srv->Log(DEBUG, "Matching against %s, %s and %s", user->GetFullRealHost(), user->GetFullHost(), ipmask.c_str());
                                
                                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(ServerInstance->MatchText(user->GetFullRealHost(), redir->banmask) || ServerInstance->MatchText(user->GetFullHost(), redir->banmask) || ServerInstance->MatchText(ipmask, redir->banmask))
                                        {
                                                /* tell them they're banned and are being transferred */
-                                               Srv->Log(DEBUG, "%s matches ban on %s -- might transferred to %s", user->nick, chan->name, redir->targetchan.c_str());
+                                               chanrec* destchan = ServerInstance->FindChan(redir->targetchan);
                                                
-                                               chanrec* destchan = Srv->FindChan(redir->targetchan);
-                                               
-                                               if(destchan && Srv->FindModule("m_redirect.so") && destchan->IsModeSet('L') && destchan->limit && (destchan->GetUserCounter() >= destchan->limit))
+                                               if(destchan && ServerInstance->FindModule("m_redirect.so") && destchan->IsModeSet('L') && destchan->limit && (destchan->GetUserCounter() >= destchan->limit))
                                                {
                                                        user->WriteServ("474 %s %s :Cannot join channel (You are banned)", user->nick, chan->name);
                                                        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());
-                                                       chanrec::JoinUser(Srv, user, redir->targetchan.c_str(), false);
+                                                       user->WriteServ("474 %s %s :Cannot join channel (You are banned)", user->nick, chan->name);
+                                                       user->WriteServ("470 %s :You are being automatically redirected to %s", user->nick, redir->targetchan.c_str());
+                                                       nofollow = true;
+                                                       chanrec::JoinUser(ServerInstance, user, redir->targetchan.c_str(), false, "", ServerInstance->Time(true));
+                                                       nofollow = false;
                                                        return 1;
                                                }
                                        }
@@ -296,7 +321,7 @@ class ModuleBanRedirect : public Module
 
        virtual ~ModuleBanRedirect()
        {
-               Srv->Modes->DelModeWatcher(re);
+               ServerInstance->Modes->DelModeWatcher(re);
                DELETE(re);
        }
        
@@ -304,29 +329,12 @@ class ModuleBanRedirect : public Module
        {
                return Version(1, 0, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
        }
-};
-
-
-class ModuleBanRedirectFactory : public ModuleFactory
-{
- public:
-       ModuleBanRedirectFactory()
-       {
-       }
-       
-       ~ModuleBanRedirectFactory()
-       {
-       }
        
-       virtual Module * CreateModule(InspIRCd* Me)
+       Priority Prioritize()
        {
-               return new ModuleBanRedirect(Me);
+               return (Priority)ServerInstance->PriorityBefore("m_banexception.so");
        }
-       
 };
 
 
-extern "C" void * init_module( void )
-{
-       return new ModuleBanRedirectFactory;
-}
+MODULE_INIT(ModuleBanRedirect)