src/modules/m_redirect.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include <stdio.h>
  20 #include "users.h"
  21 #include "channels.h"
  22 #include "modules.h"
  23 #include "helperfuncs.h"
  24
  25 /* $ModDesc: Provides channel mode +L (limit redirection) */
  26
  27 class Redirect : public ModeHandler
  28 {
  29         Server* Srv;
  30  public:
  31         Redirect(Server* s) : ModeHandler('L', 1, 0, false, MODETYPE_CHANNEL, false), Srv(s) { }
  32
  33         ModeAction OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  34         {
  35                 if (adding)
  36                 {
  37                         chanrec* c = NULL;
  38
  39                         if (!IsValidChannelName(parameter.c_str()))
  40                         {
  41                                 WriteServ(source->fd,"403 %s %s :Invalid channel name",source->nick, parameter.c_str());
  42                                 parameter = "";
  43                                 return MODEACTION_DENY;
  44                         }
  45
  46                         c = Srv->FindChannel(parameter);
  47                         if (c)
  48                         {
  49                                 /* Fix by brain: Dont let a channel be linked to *itself* either */
  50                                 if ((c == channel) || (c->IsModeSet('L')))
  51                                 {
  52                                         WriteServ(source->fd,"690 %s :Circular redirection, mode +L to %s not allowed.",source->nick,parameter.c_str());
  53                                         parameter = "";
  54                                         return MODEACTION_DENY;
  55                                 }
  56                         }
  57
  58                         channel->SetMode('L', true);
  59                         channel->SetModeParam('L', parameter.c_str(), true);
  60                         return MODEACTION_ALLOW;
  61                 }
  62                 else
  63                 {
  64                         if (channel->IsModeSet('L'))
  65                         {
  66                                 channel->SetMode('L', false);
  67                                 return MODEACTION_ALLOW;
  68                         }
  69                 }
  70
  71                 return MODEACTION_DENY;
  72
  73         }
  74 };
  75
  76 class ModuleRedirect : public Module
  77 {
  78         Server *Srv;
  79         Redirect* re;
  80
  81  public:
  82
  83         ModuleRedirect(Server* Me)
  84                 : Module::Module(Me)
  85         {
  86                 Srv = Me;
  87                 re = new Redirect(Me);
  88                 Srv->AddMode(re, 'L');
  89         }
  90
  91         void Implements(char* List)
  92         {
  93                 List[I_On005Numeric] = List[I_OnUserPreJoin] = 1;
  94         }
  95
  96         virtual void On005Numeric(std::string &output)
  97         {
  98                 InsertMode(output, "L", 3);
  99         }
 100
 101         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
 102         {
 103                 if (chan)
 104                 {
 105                         if (chan->IsModeSet('L'))
 106                         {
 107                                 if (Srv->CountUsers(chan) >= chan->limit)
 108                                 {
 109                                         std::string channel = chan->GetModeParameter('L');
 110                                         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());
 111                                         Srv->JoinUserToChannel(user,channel.c_str(),"");
 112                                         return 1;
 113                                 }
 114                         }
 115                 }
 116                 return 0;
 117         }
 118
 119         virtual ~ModuleRedirect()
 120         {
 121                 DELETE(re);
 122         }
 123
 124         virtual Version GetVersion()
 125         {
 126                 return Version(1,0,0,0,VF_STATIC|VF_VENDOR);
 127         }
 128 };
 129
 130
 131 class ModuleRedirectFactory : public ModuleFactory
 132 {
 133  public:
 134         ModuleRedirectFactory()
 135         {
 136         }
 137
 138         ~ModuleRedirectFactory()
 139         {
 140         }
 141
 142         virtual Module * CreateModule(Server* Me)
 143         {
 144                 return new ModuleRedirect(Me);
 145         }
 146
 147 };
 148
 149
 150 extern "C" void * init_module( void )
 151 {
 152         return new ModuleRedirectFactory;
 153 }
 154