src/modules/m_override.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 support for unreal-style oper-override */
  26
  27 typedef std::map<std::string,std::string> override_t;
  28
  29 class ModuleOverride : public Module
  30 {
  31         Server *Srv;
  32         override_t overrides;
  33         bool NoisyOverride;
  34         ConfigReader *Conf;
  35
  36  public:
  37
  38         ModuleOverride(Server* Me)
  39                 : Module::Module(Me)
  40         {
  41
  42                 // here we initialise our module. Use new to create new instances of the required
  43                 // classes.
  44
  45                 Srv = Me;
  46                 Conf = new ConfigReader;
  47
  48                 // read our config options (main config file)
  49                 OnRehash("");
  50         }
  51
  52         virtual void OnRehash(const std::string &parameter)
  53         {
  54                 // on a rehash we delete our classes for good measure and create them again.
  55                 delete Conf;
  56                 Conf = new ConfigReader;
  57                 // re-read our config options on a rehash
  58                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  59                 overrides.clear();
  60                 for (int j =0; j < Conf->Enumerate("type"); j++)
  61                 {
  62                         std::string typen = Conf->ReadValue("type","name",j);
  63                         std::string tokenlist = Conf->ReadValue("type","override",j);
  64                         overrides[typen] = tokenlist;
  65                 }
  66         }
  67
  68         void Implements(char* List)
  69         {
  70                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = 1;
  71         }
  72
  73         virtual void On005Numeric(std::string &output)
  74         {
  75                 output = output + std::string(" OVERRIDE");
  76         }
  77
  78         virtual bool CanOverride(userrec* source, char* token)
  79         {
  80                 // checks to see if the oper's type has <type:override>
  81                 override_t::iterator j = overrides.find(source->oper);
  82                 if (j != overrides.end())
  83                 {
  84                         // its defined, return its value as a boolean for if the token is set
  85                         return strstr(j->second.c_str(),token);
  86                 }
  87                 // its not defined at all, count as false
  88                 return false;
  89         }
  90
  91         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
  92         {
  93                 if ((*source->oper) && (CanOverride(source,"KICK")))
  94                 {
  95                         if (((Srv->ChanMode(source,chan) == "%") && (Srv->ChanMode(user,chan) == "@")) || (Srv->ChanMode(source,chan) == ""))
  96                         {
  97                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
  98                         }
  99                         /* Returning -1 explicitly allows the kick */
 100                         return -1;
 101                 }
 102                 return 0;
 103         }
 104
 105         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 106         {
 107                 if (*source->oper)
 108                 {
 109                         if ((Srv) && (source) && (channel))
 110                         {
 111                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 112                                 // to not check the other items in the statement if they arent on the channel
 113                                 std::string mode = Srv->ChanMode(source,channel);
 114                                 if ((!channel->HasUser(source)) || ((mode != "%") && (mode != "@")))
 115                                 {
 116                                         switch (access_type)
 117                                         {
 118                                                 case AC_DEOP:
 119                                                         if (CanOverride(source,"MODEDEOP"))
 120                                                         {
 121                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Deopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 122                                                                 return ACR_ALLOW;
 123                                                         }
 124                                                         else return ACR_DEFAULT;
 125                                                 break;
 126                                                 case AC_OP:
 127                                                         if (CanOverride(source,"MODEOP"))
 128                                                         {
 129                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Opped "+std::string(dest->nick)+" on "+std::string(channel->name));
 130                                                                 return ACR_ALLOW;
 131                                                         }
 132                                                         else return ACR_DEFAULT;
 133                                                 break;
 134                                                 case AC_VOICE:
 135                                                         if (CanOverride(source,"MODEVOICE"))
 136                                                         {
 137                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Voiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 138                                                                 return ACR_ALLOW;
 139                                                         }
 140                                                         else return ACR_DEFAULT;
 141                                                 break;
 142                                                 case AC_DEVOICE:
 143                                                         if (CanOverride(source,"MODEDEVOICE"))
 144                                                         {
 145                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Devoiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 146                                                                 return ACR_ALLOW;
 147                                                         }
 148                                                         else return ACR_DEFAULT;
 149                                                 break;
 150                                                 case AC_HALFOP:
 151                                                         if (CanOverride(source,"MODEHALFOP"))
 152                                                         {
 153                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Halfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 154                                                                 return ACR_ALLOW;
 155                                                         }
 156                                                         else return ACR_DEFAULT;
 157                                                 break;
 158                                                 case AC_DEHALFOP:
 159                                                         if (CanOverride(source,"MODEDEHALFOP"))
 160                                                         {
 161                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Dehalfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 162                                                                 return ACR_ALLOW;
 163                                                         }
 164                                                         else return ACR_DEFAULT;
 165                                                 break;
 166                                         }
 167                                 }
 168                         }
 169                         if (CanOverride(source,"OTHERMODE"))
 170                         {
 171                                 return ACR_ALLOW;
 172                         }
 173                         else
 174                         {
 175                                 return ACR_DEFAULT;
 176                         }
 177                 }
 178
 179                 return ACR_DEFAULT;
 180         }
 181
 182         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
 183         {
 184                 if (*user->oper)
 185                 {
 186                         if (chan)
 187                         {
 188                                 if ((chan->binarymodes & CM_INVITEONLY) && (CanOverride(user,"INVITE")))
 189                                 {
 190                                         if (NoisyOverride)
 191                                         {
 192                                                 irc::string x = chan->name;
 193                                                 if (!user->IsInvited(x))
 194                                                 {
 195                                                         WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s invited himself into the channel",cname,user->nick);
 196                                                 }
 197                                         }
 198                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 199                                         return -1;
 200                                 }
 201                                 if ((chan->key[0]) && (CanOverride(user,"KEY")))
 202                                 {
 203                                         if (NoisyOverride)
 204                                                 WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s bypassed the channel key",cname,user->nick);
 205                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 206                                         return -1;
 207                                 }
 208                                 if ((chan->limit >= Srv->CountUsers(chan)) && (CanOverride(user,"LIMIT")))
 209                                 {
 210                                         if (NoisyOverride)
 211                                                 WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s passed through your channel limit",cname,user->nick);
 212                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 213                                         return -1;
 214                                 }
 215
 216                                 if (CanOverride(user,"BANWALK"))
 217                                 {
 218                                         // other join
 219                                         return -1;
 220                                 }
 221                         }
 222                 }
 223                 return 0;
 224         }
 225
 226         virtual ~ModuleOverride()
 227         {
 228                 delete Conf;
 229         }
 230
 231         virtual Version GetVersion()
 232         {
 233                 return Version(1,0,0,1,VF_VENDOR);
 234         }
 235 };
 236
 237
 238 class ModuleOverrideFactory : public ModuleFactory
 239 {
 240  public:
 241         ModuleOverrideFactory()
 242         {
 243         }
 244
 245         ~ModuleOverrideFactory()
 246         {
 247         }
 248
 249         virtual Module * CreateModule(Server* Me)
 250         {
 251                 return new ModuleOverride(Me);
 252         }
 253
 254 };
 255
 256
 257 extern "C" void * init_module( void )
 258 {
 259         return new ModuleOverrideFactory;
 260 }
 261