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