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 #include "users.h"
  18 #include "channels.h"
  19 #include "modules.h"
  20 #include "helperfuncs.h"
  21
  22 /* $ModDesc: Provides support for unreal-style oper-override */
  23
  24 typedef std::map<std::string,std::string> override_t;
  25
  26 class ModuleOverride : public Module
  27 {
  28         Server *Srv;
  29         override_t overrides;
  30         bool NoisyOverride;
  31  public:
  32
  33         ModuleOverride(Server* Me)
  34                 : Module::Module(Me)
  35         {
  36
  37                 // here we initialise our module. Use new to create new instances of the required
  38                 // classes.
  39
  40                 Srv = Me;
  41
  42                 // read our config options (main config file)
  43                 OnRehash("");
  44         }
  45
  46         virtual void OnRehash(const std::string &parameter)
  47         {
  48                 // on a rehash we delete our classes for good measure and create them again.
  49                 ConfigReader* Conf = new ConfigReader;
  50
  51                 // re-read our config options on a rehash
  52                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  53                 overrides.clear();
  54                 for (int j =0; j < Conf->Enumerate("type"); j++)
  55                 {
  56                         std::string typen = Conf->ReadValue("type","name",j);
  57                         std::string tokenlist = Conf->ReadValue("type","override",j);
  58                         overrides[typen] = tokenlist;
  59                 }
  60
  61                 delete Conf;
  62         }
  63
  64         void Implements(char* List)
  65         {
  66                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = 1;
  67         }
  68
  69         virtual void On005Numeric(std::string &output)
  70         {
  71                 output.append(" OVERRIDE");
  72         }
  73
  74         virtual bool CanOverride(userrec* source, char* token)
  75         {
  76                 // checks to see if the oper's type has <type:override>
  77                 override_t::iterator j = overrides.find(source->oper);
  78
  79                 if (j != overrides.end())
  80                 {
  81                         // its defined, return its value as a boolean for if the token is set
  82                         return (j->second.find(token, 0) != std::string::npos);
  83                 }
  84
  85                 // its not defined at all, count as false
  86                 return false;
  87         }
  88
  89         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
  90         {
  91                 if ((*source->oper) && (CanOverride(source,"KICK")))
  92                 {
  93                         if (((Srv->ChanMode(source,chan) == "%") && (Srv->ChanMode(user,chan) == "@")) || (Srv->ChanMode(source,chan) == ""))
  94                         {
  95                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
  96                         }
  97                         /* Returning -1 explicitly allows the kick */
  98                         return -1;
  99                 }
 100                 return 0;
 101         }
 102
 103         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 104         {
 105                 if (*source->oper)
 106                 {
 107                         if ((Srv) && (source) && (channel))
 108                         {
 109                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 110                                 // to not check the other items in the statement if they arent on the channel
 111                                 std::string mode = Srv->ChanMode(source,channel);
 112                                 if ((!channel->HasUser(source)) || ((mode != "%") && (mode != "@")))
 113                                 {
 114                                         switch (access_type)
 115                                         {
 116                                                 case AC_DEOP:
 117                                                         if (CanOverride(source,"MODEDEOP"))
 118                                                         {
 119                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Deopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 120                                                                 return ACR_ALLOW;
 121                                                         }
 122                                                         else
 123                                                         {
 124                                                                 return ACR_DEFAULT;
 125                                                         }
 126
 127                                                 case AC_OP:
 128                                                         if (CanOverride(source,"MODEOP"))
 129                                                         {
 130                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Opped "+std::string(dest->nick)+" on "+std::string(channel->name));
 131                                                                 return ACR_ALLOW;
 132                                                         }
 133                                                         else
 134                                                         {
 135                                                                 return ACR_DEFAULT;
 136                                                         }
 137
 138                                                 case AC_VOICE:
 139                                                         if (CanOverride(source,"MODEVOICE"))
 140                                                         {
 141                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Voiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 142                                                                 return ACR_ALLOW;
 143                                                         }
 144                                                         else
 145                                                         {
 146                                                                 return ACR_DEFAULT;
 147                                                         }
 148
 149                                                 case AC_DEVOICE:
 150                                                         if (CanOverride(source,"MODEDEVOICE"))
 151                                                         {
 152                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Devoiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 153                                                                 return ACR_ALLOW;
 154                                                         }
 155                                                         else
 156                                                         {
 157                                                                 return ACR_DEFAULT;
 158                                                         }
 159
 160                                                 case AC_HALFOP:
 161                                                         if (CanOverride(source,"MODEHALFOP"))
 162                                                         {
 163                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Halfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 164                                                                 return ACR_ALLOW;
 165                                                         }
 166                                                         else
 167                                                         {
 168                                                                 return ACR_DEFAULT;
 169                                                         }
 170
 171                                                 case AC_DEHALFOP:
 172                                                         if (CanOverride(source,"MODEDEHALFOP"))
 173                                                         {
 174                                                                 Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Dehalfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 175                                                                 return ACR_ALLOW;
 176                                                         }
 177                                                         else
 178                                                         {
 179                                                                 return ACR_DEFAULT;
 180                                                         }
 181                                         }
 182                                 }
 183                         }
 184
 185                         if (CanOverride(source,"OTHERMODE"))
 186                         {
 187                                 return ACR_ALLOW;
 188                         }
 189                         else
 190                         {
 191                                 return ACR_DEFAULT;
 192                         }
 193                 }
 194
 195                 return ACR_DEFAULT;
 196         }
 197
 198         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
 199         {
 200                 if (*user->oper)
 201                 {
 202                         if (chan)
 203                         {
 204                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 205                                 {
 206                                         if (NoisyOverride)
 207                                         {
 208                                                 irc::string x = chan->name;
 209                                                 if (!user->IsInvited(x))
 210                                                 {
 211                                                         /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 212                                                         WriteChannelWithServ((char*)Srv->GetServerName().c_str(), chan, "NOTICE %s :%s invited himself into the channel",cname,user->nick);
 213                                                 }
 214                                         }
 215                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 216                                         return -1;
 217                                 }
 218
 219                                 if ((chan->key[0]) && (CanOverride(user,"KEY")))
 220                                 {
 221                                         if (NoisyOverride)
 222                                                 WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s bypassed the channel key",cname,user->nick);
 223                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 224                                         return -1;
 225                                 }
 226
 227                                 if ((chan->limit > 0) && (Srv->CountUsers(chan) >=  chan->limit) && (CanOverride(user,"LIMIT")))
 228                                 {
 229                                         if (NoisyOverride)
 230                                                 WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s passed through your channel limit",cname,user->nick);
 231                                         Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 232                                         return -1;
 233                                 }
 234
 235                                 if (CanOverride(user,"BANWALK"))
 236                                 {
 237                                         // other join
 238                                         return -1;
 239                                 }
 240                         }
 241                 }
 242                 return 0;
 243         }
 244
 245         virtual ~ModuleOverride()
 246         {
 247         }
 248
 249         virtual Version GetVersion()
 250         {
 251                 return Version(1,0,0,1,VF_VENDOR);
 252         }
 253 };
 254
 255
 256 class ModuleOverrideFactory : public ModuleFactory
 257 {
 258  public:
 259         ModuleOverrideFactory()
 260         {
 261         }
 262
 263         ~ModuleOverrideFactory()
 264         {
 265         }
 266
 267         virtual Module * CreateModule(Server* Me)
 268         {
 269                 return new ModuleOverride(Me);
 270         }
 271
 272 };
 273
 274
 275 extern "C" void * init_module( void )
 276 {
 277         return new ModuleOverrideFactory;
 278 }