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  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         }
  42
  43         virtual void OnRehash(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         void Implements(char* List)
  62         {
  63                 List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = List[I_OnUserPreKick] = 1;
  64         }
  65
  66         virtual void On005Numeric(std::string &output)
  67         {
  68                 output.append(" OVERRIDE");
  69         }
  70
  71         virtual bool CanOverride(userrec* source, char* token)
  72         {
  73                 // checks to see if the oper's type has <type:override>
  74                 override_t::iterator j = overrides.find(source->oper);
  75
  76                 if (j != overrides.end())
  77                 {
  78                         // its defined, return its value as a boolean for if the token is set
  79                         return (j->second.find(token, 0) != std::string::npos);
  80                 }
  81
  82                 // its not defined at all, count as false
  83                 return false;
  84         }
  85
  86         virtual int OnUserPreKick(userrec* source, userrec* user, chanrec* chan, const std::string &reason)
  87         {
  88                 if ((*source->oper) && (CanOverride(source,"KICK")))
  89                 {
  90                         if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
  91                         {
  92                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
  93                         }
  94                         /* Returning -1 explicitly allows the kick */
  95                         return -1;
  96                 }
  97                 return 0;
  98         }
  99
 100         virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
 101         {
 102                 if (*source->oper)
 103                 {
 104                         if (source && channel)
 105                         {
 106                                 // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
 107                                 // to not check the other items in the statement if they arent on the channel
 108                                 int mode = channel->GetStatus(source);
 109                                 if ((!channel->HasUser(source)) || ((mode != STATUS_HOP) && (mode != STATUS_OP)))
 110                                 {
 111                                         switch (access_type)
 112                                         {
 113                                                 case AC_DEOP:
 114                                                         if (CanOverride(source,"MODEDEOP"))
 115                                                         {
 116                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Deopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 117                                                                 return ACR_ALLOW;
 118                                                         }
 119                                                         else
 120                                                         {
 121                                                                 return ACR_DEFAULT;
 122                                                         }
 123
 124                                                 case AC_OP:
 125                                                         if (CanOverride(source,"MODEOP"))
 126                                                         {
 127                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Opped "+std::string(dest->nick)+" on "+std::string(channel->name));
 128                                                                 return ACR_ALLOW;
 129                                                         }
 130                                                         else
 131                                                         {
 132                                                                 return ACR_DEFAULT;
 133                                                         }
 134
 135                                                 case AC_VOICE:
 136                                                         if (CanOverride(source,"MODEVOICE"))
 137                                                         {
 138                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Voiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 139                                                                 return ACR_ALLOW;
 140                                                         }
 141                                                         else
 142                                                         {
 143                                                                 return ACR_DEFAULT;
 144                                                         }
 145
 146                                                 case AC_DEVOICE:
 147                                                         if (CanOverride(source,"MODEDEVOICE"))
 148                                                         {
 149                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Devoiced "+std::string(dest->nick)+" on "+std::string(channel->name));
 150                                                                 return ACR_ALLOW;
 151                                                         }
 152                                                         else
 153                                                         {
 154                                                                 return ACR_DEFAULT;
 155                                                         }
 156
 157                                                 case AC_HALFOP:
 158                                                         if (CanOverride(source,"MODEHALFOP"))
 159                                                         {
 160                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Halfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 161                                                                 return ACR_ALLOW;
 162                                                         }
 163                                                         else
 164                                                         {
 165                                                                 return ACR_DEFAULT;
 166                                                         }
 167
 168                                                 case AC_DEHALFOP:
 169                                                         if (CanOverride(source,"MODEDEHALFOP"))
 170                                                         {
 171                                                                 ServerInstance->SNO->WriteToSnoMask('O',"NOTICE: "+std::string(source->nick)+" Override-Dehalfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
 172                                                                 return ACR_ALLOW;
 173                                                         }
 174                                                         else
 175                                                         {
 176                                                                 return ACR_DEFAULT;
 177                                                         }
 178                                         }
 179                                 }
 180                         }
 181
 182                         if (CanOverride(source,"OTHERMODE"))
 183                         {
 184                                 return ACR_ALLOW;
 185                         }
 186                         else
 187                         {
 188                                 return ACR_DEFAULT;
 189                         }
 190                 }
 191
 192                 return ACR_DEFAULT;
 193         }
 194
 195         virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
 196         {
 197                 if (*user->oper)
 198                 {
 199                         if (chan)
 200                         {
 201                                 if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
 202                                 {
 203                                         if (NoisyOverride)
 204                                         {
 205                                                 irc::string x = chan->name;
 206                                                 if (!user->IsInvited(x))
 207                                                 {
 208                                                         /* XXX - Ugly cast for a parameter that isn't used? :< - Om */
 209                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass invite-only", cname, user->nick);
 210                                                 }
 211                                         }
 212                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
 213                                         return -1;
 214                                 }
 215
 216                                 if ((chan->key[0]) && (CanOverride(user,"KEY")))
 217                                 {
 218                                         if (NoisyOverride)
 219                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel key", cname, user->nick);
 220                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
 221                                         return -1;
 222                                 }
 223
 224                                 if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
 225                                 {
 226                                         if (NoisyOverride)
 227                                                 chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass the channel limit", cname, user->nick);
 228                                         ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
 229                                         return -1;
 230                                 }
 231
 232                                 if (CanOverride(user,"BANWALK"))
 233                                 {
 234                                         if (chan->IsBanned(user))
 235                                         {
 236                                                 if (NoisyOverride)
 237                                                 {
 238                                                         chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper-override to bypass channel ban", cname, user->nick);
 239                                                         ServerInstance->SNO->WriteToSnoMask('O',"%s used oper-override to bypass channel ban", cname, user->nick);
 240                                                 }
 241                                         }
 242                                         return -1;
 243                                 }
 244                         }
 245                 }
 246                 return 0;
 247         }
 248
 249         virtual ~ModuleOverride()
 250         {
 251                 ServerInstance->SNO->DisableSnomask('O');
 252         }
 253
 254         virtual Version GetVersion()
 255         {
 256                 return Version(1,0,0,1,VF_VENDOR);
 257         }
 258 };
 259
 260
 261 class ModuleOverrideFactory : public ModuleFactory
 262 {
 263  public:
 264         ModuleOverrideFactory()
 265         {
 266         }
 267
 268         ~ModuleOverrideFactory()
 269         {
 270         }
 271
 272         virtual Module * CreateModule(InspIRCd* Me)
 273         {
 274                 return new ModuleOverride(Me);
 275         }
 276
 277 };
 278
 279
 280 extern "C" void * init_module( void )
 281 {
 282         return new ModuleOverrideFactory;
 283 }