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