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 "configreader.h"
  21 #include "inspircd.h"
  22 #include "wildcard.h"
  23
  24 /* $ModDesc: Provides support for unreal-style oper-override */
  25
  26 typedef std::map<std::string,std::string> override_t;
  27
  28 class ModuleOverride : public Module
  29 {
  30
  31         override_t overrides;
  32         bool NoisyOverride;
  33         bool OverriddenMode;
  34         int OverOps, OverDeops, OverVoices, OverDevoices, OverHalfops, OverDehalfops;
  35
  36  public:
  37
  38         ModuleOverride(InspIRCd* Me)
  39                 : Module::Module(Me)
  40         {
  41                 // read our config options (main config file)
  42                 OnRehash("");
  43                 ServerInstance->SNO->EnableSnomask('O',"OVERRIDE");
  44                 OverriddenMode = false;
  45                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  46         }
  47
  48         virtual void OnRehash(const std::string &parameter)
  49         {
  50                 // on a rehash we delete our classes for good measure and create them again.
  51                 ConfigReader* Conf = new ConfigReader(ServerInstance);
  52
  53                 // re-read our config options on a rehash
  54                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  55                 overrides.clear();
  56                 for (int j =0; j < Conf->Enumerate("type"); j++)
  57                 {
  58                         std::string typen = Conf->ReadValue("type","name",j);
  59                         std::string tokenlist = Conf->ReadValue("type","override",j);
  60                         overrides[typen] = tokenlist;
  61                 }
  62
  63                 DELETE(Conf);
  64         }
  65
  66         void Implements(char* List)
  67         {
  68                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = List[I_OnPostCommand] = 1;
  69         }
  70
  71         virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line)
  72         {
  73                 if ((NoisyOverride) && (OverriddenMode) && (irc::string(command.c_str()) == "MODE") && (result == CMD_SUCCESS))
  74                 {
  75                         int Total = OverOps + OverDeops + OverVoices + OverDevoices + OverHalfops + OverDehalfops;
  76
  77                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" Overriding modes: "+ServerInstance->Modes->GetLastParse()+" "+(Total ? "[Detail: " : "")+
  78                                         (OverOps ? ConvToStr(OverOps)+" op"+(OverOps != 1 ? "s" : "")+" " : "")+
  79                                         (OverDeops ? ConvToStr(OverDeops)+" deop"+(OverDeops != 1 ? "s" : "")+" " : "")+
  80                                         (OverVoices ? ConvToStr(OverVoices)+" voice"+(OverVoices != 1 ? "s" : "")+" " : "")+
  81                                         (OverDevoices ? ConvToStr(OverDevoices)+" devoice"+(OverDevoices != 1 ? "s" : "")+" " : "")+
  82                                         (OverHalfops ? ConvToStr(OverHalfops)+" halfop"+(OverHalfops != 1 ? "s" : "")+" " : "")+
  83                                         (OverDehalfops ? ConvToStr(OverDehalfops)+" dehalfop"+(OverDehalfops != 1 ? "s" : "") : "")
  84                                         +(Total ? "]" : ""));
  85
  86                         OverriddenMode = false;
  87                         OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  88                 }
  89         }
  90
  91         virtual void On005Numeric(std::string &output)
  92         {
  93                 output.append(" OVERRIDE");
  94         }
  95
  96         virtual bool CanOverride(userrec* source, char* token)
  97         {
  98                 // checks to see if the oper's type has <type:override>
  99                 override_t::iterator j = overrides.find(source->oper);
 100
 101                 if (j != overrides.end())
 102                 {
 103                         // its defined, return its value as a boolean for if the token is set
 104                         return (j->second.find(token, 0) != std::string::npos);
 105                 }
 106
 107                 // its not defined at all, count as false
 108                 return false;
 109         }
 110
 111         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
 112         {
 113                 if ((*source->oper) && (CanOverride(source,"KICK")))
 114                 {
 115                         if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
 116                         {
 117                                 ServerInstance->SNO->WriteToSnoMask('O',std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
 118                         }
 119                         /* Returning -1 explicitly allows the kick */
 120                         return -1;
 121                 }
 122                 return 0;
 123         }
 124
 125         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 126         {
 127                 if (*source->oper)
 128                 {
 129                         if (source && channel)
 130                         {
 131                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 132                                 // to not check the other items in the statement if they arent on the channel
 133                                 int mode = channel->GetStatus(source);
 134                                 switch (access_type)
 135                                 {
 136                                         case AC_DEOP:
 137                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEOP");
 138                                                 if (CanOverride(source,"MODEDEOP"))
 139                                                 {
 140                                                         if (NoisyOverride)
 141                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 142                                                                 OverDeops++;
 143                                                         return ACR_ALLOW;
 144                                                 }
 145                                                 else
 146                                                 {
 147                                                         return ACR_DEFAULT;
 148                                                 }
 149                                         break;
 150                                         case AC_OP:
 151                                                 ServerInstance->Log(DEBUG,"Override access check AC_OP");
 152                                                 if (CanOverride(source,"MODEOP"))
 153                                                 {
 154                                                         if (NoisyOverride)
 155                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 156                                                                 OverOps++;
 157                                                         return ACR_ALLOW;
 158                                                 }
 159                                                 else
 160                                                 {
 161                                                         return ACR_DEFAULT;
 162                                                 }
 163                                         break;
 164                                         case AC_VOICE:
 165                                                 ServerInstance->Log(DEBUG,"Override access check AC_VOICE");
 166                                                 if (CanOverride(source,"MODEVOICE"))
 167                                                 {
 168                                                         if (NoisyOverride)
 169                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 170                                                                 OverVoices++;
 171                                                         return ACR_ALLOW;
 172                                                 }
 173                                                 else
 174                                                 {
 175                                                         return ACR_DEFAULT;
 176                                                 }
 177                                         break;
 178                                         case AC_DEVOICE:
 179                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEVOICE");
 180                                                 if (CanOverride(source,"MODEDEVOICE"))
 181                                                 {
 182                                                         if (NoisyOverride)
 183                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 184                                                                 OverDevoices++;
 185                                                         return ACR_ALLOW;
 186                                                 }
 187                                                 else
 188                                                 {
 189                                                         return ACR_DEFAULT;
 190                                                 }
 191                                         break;
 192                                         case AC_HALFOP:
 193                                                 ServerInstance->Log(DEBUG,"Override access check AC_HALFOP");
 194                                                 if (CanOverride(source,"MODEHALFOP"))
 195                                                 {
 196                                                         if (NoisyOverride)
 197                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 198                                                                 OverHalfops++;
 199                                                         return ACR_ALLOW;
 200                                                 }
 201                                                 else
 202                                                 {
 203                                                         return ACR_DEFAULT;
 204                                                 }
 205                                         break;
 206                                         case AC_DEHALFOP:
 207                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEHALFOP");
 208                                                 if (CanOverride(source,"MODEDEHALFOP"))
 209                                                 {
 210                                                         if (NoisyOverride)
 211                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 212                                                                 OverDehalfops++;
 213                                                         return ACR_ALLOW;
 214                                                 }
 215                                                 else
 216                                                 {
 217                                                         return ACR_DEFAULT;
 218                                                 }
 219                                         break;
 220                                 }
 221
 222                                 if (CanOverride(source,"OTHERMODE"))
 223                                 {
 224                                         if (NoisyOverride)
 225                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 226                                         {
 227                                                 ServerInstance->Log(DEBUG,"Overridden mode");
 228                                                 OverriddenMode = true;
 229                                                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
 230                                         }
 231                                         return ACR_ALLOW;
 232                                 }
 233                                 else
 234                                 {
 235                                         return ACR_DEFAULT;
 236                                 }
 237                         }
 238                 }
 239
 240                 return ACR_DEFAULT;
 241         }
 242
 243         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 244         {
 245                 if (*user->oper)
 246                 {
 247                         if (chan)
 248                         {
 249                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 250                                 {
 251                                         if (NoisyOverride)
 252                                         {
 253                                                 irc::string x = chan->name;
 254                                                 if (!user->IsInvited(x))
 255                                                 {
 256                                                         /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 257                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass invite-only", cname, user->nick);
 258                                                 }
 259                                         }
 260                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 261                                         return -1;
 262                                 }
 263
 264                                 if ((chan->key[0]) && (CanOverride(user,"KEY")))
 265                                 {
 266                                         if (NoisyOverride)
 267                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel key", cname, user->nick);
 268                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 269                                         return -1;
 270                                 }
 271
 272                                 if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
 273                                 {
 274                                         if (NoisyOverride)
 275                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel limit", cname, user->nick);
 276                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 277                                         return -1;
 278                                 }
 279
 280                                 if (CanOverride(user,"BANWALK"))
 281                                 {
 282                                         if (chan->IsBanned(user))
 283                                         {
 284                                                 if (NoisyOverride)
 285                                                 {
 286                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass channel ban", cname, user->nick);
 287                                                         ServerInstance->SNO->WriteToSnoMask('O',"%s used oper-override to bypass channel ban", cname, user->nick);
 288                                                 }
 289                                         }
 290                                         return -1;
 291                                 }
 292                         }
 293                 }
 294                 return 0;
 295         }
 296
 297         virtual ~ModuleOverride()
 298         {
 299                 ServerInstance->SNO->DisableSnomask('O');
 300         }
 301
 302         virtual Version GetVersion()
 303         {
 304                 return Version(1,0,0,1,VF_VENDOR,API_VERSION);
 305         }
 306 };
 307
 308
 309 class ModuleOverrideFactory : public ModuleFactory
 310 {
 311  public:
 312         ModuleOverrideFactory()
 313         {
 314         }
 315
 316         ~ModuleOverrideFactory()
 317         {
 318         }
 319
 320         virtual Module * CreateModule(InspIRCd* Me)
 321         {
 322                 return new ModuleOverride(Me);
 323         }
 324
 325 };
 326
 327
 328 extern "C" void * init_module( void )
 329 {
 330         return new ModuleOverrideFactory;
 331 }