src/modules/m_override.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "users.h"
  15 #include "channels.h"
  16 #include "modules.h"
  17 #include "configreader.h"
  18 #include "inspircd.h"
  19 #include "wildcard.h"
  20
  21 /* $ModDesc: Provides support for unreal-style oper-override */
  22
  23 typedef std::map<std::string,std::string> override_t;
  24
  25 class ModuleOverride : public Module
  26 {
  27
  28         override_t overrides;
  29         bool NoisyOverride;
  30         bool OverriddenMode;
  31         int OverOps, OverDeops, OverVoices, OverDevoices, OverHalfops, OverDehalfops;
  32
  33  public:
  34
  35         ModuleOverride(InspIRCd* Me)
  36                 : Module::Module(Me)
  37         {
  38                 // read our config options (main config file)
  39                 OnRehash("");
  40                 ServerInstance->SNO->EnableSnomask('O',"OVERRIDE");
  41                 OverriddenMode = false;
  42                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  43         }
  44
  45         virtual void OnRehash(const std::string &parameter)
  46         {
  47                 // on a rehash we delete our classes for good measure and create them again.
  48                 ConfigReader* Conf = new ConfigReader(ServerInstance);
  49
  50                 // re-read our config options on a rehash
  51                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  52                 overrides.clear();
  53                 for (int j =0; j < Conf->Enumerate("type"); j++)
  54                 {
  55                         std::string typen = Conf->ReadValue("type","name",j);
  56                         std::string tokenlist = Conf->ReadValue("type","override",j);
  57                         overrides[typen] = tokenlist;
  58                 }
  59
  60                 DELETE(Conf);
  61         }
  62
  63         void Implements(char* List)
  64         {
  65                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = List[I_OnPostCommand] = 1;
  66         }
  67
  68         virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, userrec *user, CmdResult result, const std::string &original_line)
  69         {
  70                 if ((NoisyOverride) && (OverriddenMode) && (irc::string(command.c_str()) == "MODE") && (result == CMD_SUCCESS))
  71                 {
  72                         int Total = OverOps + OverDeops + OverVoices + OverDevoices + OverHalfops + OverDehalfops;
  73
  74                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" Overriding modes: "+ServerInstance->Modes->GetLastParse()+" "+(Total ? "[Detail: " : "")+
  75                                         (OverOps ? ConvToStr(OverOps)+" op"+(OverOps != 1 ? "s" : "")+" " : "")+
  76                                         (OverDeops ? ConvToStr(OverDeops)+" deop"+(OverDeops != 1 ? "s" : "")+" " : "")+
  77                                         (OverVoices ? ConvToStr(OverVoices)+" voice"+(OverVoices != 1 ? "s" : "")+" " : "")+
  78                                         (OverDevoices ? ConvToStr(OverDevoices)+" devoice"+(OverDevoices != 1 ? "s" : "")+" " : "")+
  79                                         (OverHalfops ? ConvToStr(OverHalfops)+" halfop"+(OverHalfops != 1 ? "s" : "")+" " : "")+
  80                                         (OverDehalfops ? ConvToStr(OverDehalfops)+" dehalfop"+(OverDehalfops != 1 ? "s" : "") : "")
  81                                         +(Total ? "]" : ""));
  82
  83                         OverriddenMode = false;
  84                         OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  85                 }
  86         }
  87
  88         virtual void On005Numeric(std::string &output)
  89         {
  90                 output.append(" OVERRIDE");
  91         }
  92
  93         virtual bool CanOverride(userrec* source, char* token)
  94         {
  95                 // checks to see if the oper's type has <type:override>
  96                 override_t::iterator j = overrides.find(source->oper);
  97
  98                 if (j != overrides.end())
  99                 {
 100                         // its defined or * is set, return its value as a boolean for if the token is set
 101                         return ((j->second.find(token, 0) != std::string::npos) || (j->second.find("*", 0) != std::string::npos));
 102                 }
 103
 104                 // its not defined at all, count as false
 105                 return false;
 106         }
 107
 108         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
 109         {
 110                 if ((*source->oper) && (CanOverride(source,"KICK")))
 111                 {
 112                         if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
 113                         {
 114                                 ServerInstance->SNO->WriteToSnoMask('O',std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
 115                         }
 116                         /* Returning -1 explicitly allows the kick */
 117                         return -1;
 118                 }
 119                 return 0;
 120         }
 121
 122         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 123         {
 124                 if (*source->oper)
 125                 {
 126                         if (source && channel)
 127                         {
 128                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 129                                 // to not check the other items in the statement if they arent on the channel
 130                                 int mode = channel->GetStatus(source);
 131                                 switch (access_type)
 132                                 {
 133                                         case AC_DEOP:
 134                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEOP");
 135                                                 if (CanOverride(source,"MODEDEOP"))
 136                                                 {
 137                                                         if (NoisyOverride)
 138                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 139                                                                 OverDeops++;
 140                                                         return ACR_ALLOW;
 141                                                 }
 142                                                 else
 143                                                 {
 144                                                         return ACR_DEFAULT;
 145                                                 }
 146                                         break;
 147                                         case AC_OP:
 148                                                 ServerInstance->Log(DEBUG,"Override access check AC_OP");
 149                                                 if (CanOverride(source,"MODEOP"))
 150                                                 {
 151                                                         if (NoisyOverride)
 152                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 153                                                                 OverOps++;
 154                                                         return ACR_ALLOW;
 155                                                 }
 156                                                 else
 157                                                 {
 158                                                         return ACR_DEFAULT;
 159                                                 }
 160                                         break;
 161                                         case AC_VOICE:
 162                                                 ServerInstance->Log(DEBUG,"Override access check AC_VOICE");
 163                                                 if (CanOverride(source,"MODEVOICE"))
 164                                                 {
 165                                                         if (NoisyOverride)
 166                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 167                                                                 OverVoices++;
 168                                                         return ACR_ALLOW;
 169                                                 }
 170                                                 else
 171                                                 {
 172                                                         return ACR_DEFAULT;
 173                                                 }
 174                                         break;
 175                                         case AC_DEVOICE:
 176                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEVOICE");
 177                                                 if (CanOverride(source,"MODEDEVOICE"))
 178                                                 {
 179                                                         if (NoisyOverride)
 180                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 181                                                                 OverDevoices++;
 182                                                         return ACR_ALLOW;
 183                                                 }
 184                                                 else
 185                                                 {
 186                                                         return ACR_DEFAULT;
 187                                                 }
 188                                         break;
 189                                         case AC_HALFOP:
 190                                                 ServerInstance->Log(DEBUG,"Override access check AC_HALFOP");
 191                                                 if (CanOverride(source,"MODEHALFOP"))
 192                                                 {
 193                                                         if (NoisyOverride)
 194                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 195                                                                 OverHalfops++;
 196                                                         return ACR_ALLOW;
 197                                                 }
 198                                                 else
 199                                                 {
 200                                                         return ACR_DEFAULT;
 201                                                 }
 202                                         break;
 203                                         case AC_DEHALFOP:
 204                                                 ServerInstance->Log(DEBUG,"Override access check AC_DEHALFOP");
 205                                                 if (CanOverride(source,"MODEDEHALFOP"))
 206                                                 {
 207                                                         if (NoisyOverride)
 208                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 209                                                                 OverDehalfops++;
 210                                                         return ACR_ALLOW;
 211                                                 }
 212                                                 else
 213                                                 {
 214                                                         return ACR_DEFAULT;
 215                                                 }
 216                                         break;
 217                                 }
 218
 219                                 if (CanOverride(source,"OTHERMODE"))
 220                                 {
 221                                         if (NoisyOverride)
 222                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 223                                         {
 224                                                 ServerInstance->Log(DEBUG,"Overridden mode");
 225                                                 OverriddenMode = true;
 226                                                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
 227                                         }
 228                                         return ACR_ALLOW;
 229                                 }
 230                                 else
 231                                 {
 232                                         return ACR_DEFAULT;
 233                                 }
 234                         }
 235                 }
 236
 237                 return ACR_DEFAULT;
 238         }
 239
 240         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
 241         {
 242                 if (*user->oper)
 243                 {
 244                         if (chan)
 245                         {
 246                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 247                                 {
 248                                         irc::string x = chan->name;
 249                                         if (!user->IsInvited(x))
 250                                         {
 251                                                 /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 252                                                 if (NoisyOverride)
 253                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass invite-only", cname, user->nick);
 254                                                 ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 255                                         }
 256                                         return -1;
 257                                 }
 258
 259                                 if ((*chan->key) && (CanOverride(user,"KEY")))
 260                                 {
 261                                         if (NoisyOverride)
 262                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel key", cname, user->nick);
 263                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 264                                         return -1;
 265                                 }
 266
 267                                 if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
 268                                 {
 269                                         if (NoisyOverride)
 270                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel limit", cname, user->nick);
 271                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 272                                         return -1;
 273                                 }
 274
 275                                 if (CanOverride(user,"BANWALK"))
 276                                 {
 277                                         if (chan->IsBanned(user))
 278                                         {
 279                                                 if (NoisyOverride)
 280                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass channel ban", cname, user->nick);
 281                                                 ServerInstance->SNO->WriteToSnoMask('O',"%s used oper-override to bypass channel ban on %s", user->nick, cname);
 282                                         }
 283                                         return -1;
 284                                 }
 285                         }
 286                 }
 287                 return 0;
 288         }
 289
 290         virtual ~ModuleOverride()
 291         {
 292                 ServerInstance->SNO->DisableSnomask('O');
 293         }
 294
 295         virtual Version GetVersion()
 296         {
 297                 return Version(1,1,0,1,VF_VENDOR,API_VERSION);
 298         }
 299 };
 300
 301
 302 class ModuleOverrideFactory : public ModuleFactory
 303 {
 304  public:
 305         ModuleOverrideFactory()
 306         {
 307         }
 308
 309         ~ModuleOverrideFactory()
 310         {
 311         }
 312
 313         virtual Module * CreateModule(InspIRCd* Me)
 314         {
 315                 return new ModuleOverride(Me);
 316         }
 317
 318 };
 319
 320
 321 extern "C" void * init_module( void )
 322 {
 323         return new ModuleOverrideFactory;
 324 }