src/modules/m_override.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 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 "inspircd.h"
  15 #include "wildcard.h"
  16
  17 /* $ModDesc: Provides support for unreal-style oper-override */
  18
  19 typedef std::map<std::string,std::string> override_t;
  20
  21 class ModuleOverride : public Module
  22 {
  23
  24         override_t overrides;
  25         bool NoisyOverride;
  26         bool OverriddenMode;
  27         int OverOps, OverDeops, OverVoices, OverDevoices, OverHalfops, OverDehalfops;
  28
  29  public:
  30
  31         ModuleOverride(InspIRCd* Me)
  32                 : Module(Me)
  33         {
  34                 // read our config options (main config file)
  35                 OnRehash(NULL,"");
  36                 ServerInstance->SNO->EnableSnomask('O',"OVERRIDE");
  37                 OverriddenMode = false;
  38                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  39                 Implementation eventlist[] = { I_OnRehash, I_OnAccessCheck, I_On005Numeric, I_OnUserPreJoin, I_OnUserPreKick, I_OnPostCommand };
  40                 ServerInstance->Modules->Attach(eventlist, this, 6);
  41         }
  42
  43         virtual void OnRehash(User* user, const std::string &parameter)
  44         {
  45                 // on a rehash we delete our classes for good measure and create them again.
  46                 ConfigReader* Conf = new ConfigReader(ServerInstance);
  47
  48                 // re-read our config options on a rehash
  49                 NoisyOverride = Conf->ReadFlag("override","noisy",0);
  50                 overrides.clear();
  51                 for (int j =0; j < Conf->Enumerate("type"); j++)
  52                 {
  53                         std::string typen = Conf->ReadValue("type","name",j);
  54                         std::string tokenlist = Conf->ReadValue("type","override",j);
  55                         overrides[typen] = tokenlist;
  56                 }
  57
  58                 delete Conf;
  59         }
  60
  61
  62         virtual void OnPostCommand(const std::string &command, const char** parameters, int pcnt, User *user, CmdResult result, const std::string &original_line)
  63         {
  64                 if ((NoisyOverride) && (OverriddenMode) && (irc::string(command.c_str()) == "MODE") && (result == CMD_SUCCESS))
  65                 {
  66                         int Total = OverOps + OverDeops + OverVoices + OverDevoices + OverHalfops + OverDehalfops;
  67
  68                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" Overriding modes: "+ServerInstance->Modes->GetLastParse()+" "+(Total ? "[Detail: " : "")+
  69                                         (OverOps ? ConvToStr(OverOps)+" op"+(OverOps != 1 ? "s" : "")+" " : "")+
  70                                         (OverDeops ? ConvToStr(OverDeops)+" deop"+(OverDeops != 1 ? "s" : "")+" " : "")+
  71                                         (OverVoices ? ConvToStr(OverVoices)+" voice"+(OverVoices != 1 ? "s" : "")+" " : "")+
  72                                         (OverDevoices ? ConvToStr(OverDevoices)+" devoice"+(OverDevoices != 1 ? "s" : "")+" " : "")+
  73                                         (OverHalfops ? ConvToStr(OverHalfops)+" halfop"+(OverHalfops != 1 ? "s" : "")+" " : "")+
  74                                         (OverDehalfops ? ConvToStr(OverDehalfops)+" dehalfop"+(OverDehalfops != 1 ? "s" : "") : "")
  75                                         +(Total ? "]" : ""));
  76
  77                         OverriddenMode = false;
  78                         OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
  79                 }
  80         }
  81
  82         virtual void On005Numeric(std::string &output)
  83         {
  84                 output.append(" OVERRIDE");
  85         }
  86
  87         virtual bool CanOverride(User* source, const char* token)
  88         {
  89                 // checks to see if the oper's type has <type:override>
  90                 override_t::iterator j = overrides.find(source->oper);
  91
  92                 if (j != overrides.end())
  93                 {
  94                         // its defined or * is set, return its value as a boolean for if the token is set
  95                         return ((j->second.find(token, 0) != std::string::npos) || (j->second.find("*", 0) != std::string::npos));
  96                 }
  97
  98                 // its not defined at all, count as false
  99                 return false;
 100         }
 101
 102         virtual int OnUserPreKick(User* source, User* user, Channel* chan, const std::string &reason)
 103         {
 104                 if (IS_OPER(source) && CanOverride(source,"KICK"))
 105                 {
 106                         if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
 107                         {
 108                                 ServerInstance->SNO->WriteToSnoMask('O',std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
 109                         }
 110                         /* Returning -1 explicitly allows the kick */
 111                         return -1;
 112                 }
 113                 return 0;
 114         }
 115
 116         virtual int OnAccessCheck(User* source,User* dest,Channel* channel,int access_type)
 117         {
 118                 if (IS_OPER(source))
 119                 {
 120                         if (source && channel)
 121                         {
 122                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 123                                 // to not check the other items in the statement if they arent on the channel
 124                                 int mode = channel->GetStatus(source);
 125                                 switch (access_type)
 126                                 {
 127                                         case AC_DEOP:
 128                                                 if (CanOverride(source,"MODEDEOP"))
 129                                                 {
 130                                                         if (NoisyOverride)
 131                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 132                                                                 OverDeops++;
 133                                                         return ACR_ALLOW;
 134                                                 }
 135                                                 else
 136                                                 {
 137                                                         return ACR_DEFAULT;
 138                                                 }
 139                                         break;
 140                                         case AC_OP:
 141                                                 if (CanOverride(source,"MODEOP"))
 142                                                 {
 143                                                         if (NoisyOverride)
 144                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 145                                                                 OverOps++;
 146                                                         return ACR_ALLOW;
 147                                                 }
 148                                                 else
 149                                                 {
 150                                                         return ACR_DEFAULT;
 151                                                 }
 152                                         break;
 153                                         case AC_VOICE:
 154                                                 if (CanOverride(source,"MODEVOICE"))
 155                                                 {
 156                                                         if (NoisyOverride)
 157                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 158                                                                 OverVoices++;
 159                                                         return ACR_ALLOW;
 160                                                 }
 161                                                 else
 162                                                 {
 163                                                         return ACR_DEFAULT;
 164                                                 }
 165                                         break;
 166                                         case AC_DEVOICE:
 167                                                 if (CanOverride(source,"MODEDEVOICE"))
 168                                                 {
 169                                                         if (NoisyOverride)
 170                                                         if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
 171                                                                 OverDevoices++;
 172                                                         return ACR_ALLOW;
 173                                                 }
 174                                                 else
 175                                                 {
 176                                                         return ACR_DEFAULT;
 177                                                 }
 178                                         break;
 179                                         case AC_HALFOP:
 180                                                 if (CanOverride(source,"MODEHALFOP"))
 181                                                 {
 182                                                         if (NoisyOverride)
 183                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 184                                                                 OverHalfops++;
 185                                                         return ACR_ALLOW;
 186                                                 }
 187                                                 else
 188                                                 {
 189                                                         return ACR_DEFAULT;
 190                                                 }
 191                                         break;
 192                                         case AC_DEHALFOP:
 193                                                 if (CanOverride(source,"MODEDEHALFOP"))
 194                                                 {
 195                                                         if (NoisyOverride)
 196                                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 197                                                                 OverDehalfops++;
 198                                                         return ACR_ALLOW;
 199                                                 }
 200                                                 else
 201                                                 {
 202                                                         return ACR_DEFAULT;
 203                                                 }
 204                                         break;
 205                                 }
 206
 207                                 if (CanOverride(source,"OTHERMODE"))
 208                                 {
 209                                         if (NoisyOverride)
 210                                         if ((!channel->HasUser(source)) || (mode < STATUS_OP))
 211                                         {
 212                                                 OverriddenMode = true;
 213                                                 OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
 214                                         }
 215                                         return ACR_ALLOW;
 216                                 }
 217                                 else
 218                                 {
 219                                         return ACR_DEFAULT;
 220                                 }
 221                         }
 222                 }
 223
 224                 return ACR_DEFAULT;
 225         }
 226
 227         virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs)
 228         {
 229                 if (IS_OPER(user))
 230                 {
 231                         if (chan)
 232                         {
 233                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 234                                 {
 235                                         irc::string x = chan->name;
 236                                         if (!user->IsInvited(x))
 237                                         {
 238                                                 /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 239                                                 if (NoisyOverride)
 240                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass invite-only", cname, user->nick);
 241                                                 ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 242                                         }
 243                                         return -1;
 244                                 }
 245
 246                                 if ((*chan->key) && (CanOverride(user,"KEY")))
 247                                 {
 248                                         if (NoisyOverride)
 249                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel key", cname, user->nick);
 250                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 251                                         return -1;
 252                                 }
 253
 254                                 if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
 255                                 {
 256                                         if (NoisyOverride)
 257                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel limit", cname, user->nick);
 258                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 259                                         return -1;
 260                                 }
 261
 262                                 if (CanOverride(user,"BANWALK"))
 263                                 {
 264                                         if (chan->IsBanned(user))
 265                                         {
 266                                                 if (NoisyOverride)
 267                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass channel ban", cname, user->nick);
 268                                                 ServerInstance->SNO->WriteToSnoMask('O',"%s used oper-override to bypass channel ban on %s", user->nick, cname);
 269                                         }
 270                                         return -1;
 271                                 }
 272                         }
 273                 }
 274                 return 0;
 275         }
 276
 277         virtual ~ModuleOverride()
 278         {
 279                 ServerInstance->SNO->DisableSnomask('O');
 280         }
 281
 282         virtual Version GetVersion()
 283         {
 284                 return Version(1,1,0,1,VF_VENDOR,API_VERSION);
 285         }
 286 };
 287
 288 MODULE_INIT(ModuleOverride)