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