src/modules/m_banexception.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 "u_listmode.h"
  16
  17 /* $ModDesc: Provides support for the +e channel mode */
  18 /* $ModDep: ../../include/u_listmode.h */
  19
  20 /* Written by Om<om@inspircd.org>, April 2005. */
  21 /* Rewritten to use the listmode utility by Om, December 2005 */
  22 /* Adapted from m_exception, which was originally based on m_chanprotect and m_silence */
  23
  24 // The +e channel mode takes a nick!ident@host, glob patterns allowed,
  25 // and if a user matches an entry on the +e list then they can join the channel, overriding any (+b) bans set on them
  26 // Now supports CIDR and IP addresses -- Brain
  27
  28
  29 /** Handles +e channel mode
  30  */
  31 class BanException : public ListModeBase
  32 {
  33  public:
  34         BanException(InspIRCd* Instance) : ListModeBase(Instance, 'e', "End of Channel Exception List", 348, 349, true) { }
  35 };
  36
  37
  38 class ModuleBanException : public Module
  39 {
  40         BanException* be;
  41
  42
  43 public:
  44         ModuleBanException(InspIRCd* Me) : Module(Me)
  45         {
  46                 be = new BanException(ServerInstance);
  47                 if (!ServerInstance->Modes->AddMode(be))
  48                         throw ModuleException("Could not add new modes!");
  49                 ServerInstance->Modules->PublishInterface("ChannelBanList", this);
  50
  51                 be->DoImplements(this);
  52                 Implementation list[] = { I_OnRehash, I_OnRequest, I_On005Numeric, I_OnCheckBan, I_OnCheckExtBan, I_OnCheckStringExtBan };
  53                 Me->Modules->Attach(list, this, 6);
  54
  55         }
  56
  57         virtual void On005Numeric(std::string &output)
  58         {
  59                 output.append(" EXCEPTS=e");
  60         }
  61
  62         virtual int OnCheckExtBan(User *user, Channel *chan, char type)
  63         {
  64                 if (chan != NULL)
  65                 {
  66                         modelist *list;
  67                         chan->GetExt(be->GetInfoKey(), list);
  68
  69                         if (!list)
  70                                 return 0;
  71
  72                         std::string mask = std::string(user->nick) + "!" + user->ident + "@" + user->GetIPString();
  73                         for (modelist::iterator it = list->begin(); it != list->end(); it++)
  74                         {
  75                                 if (it->mask[0] != type || it->mask[1] != ':')
  76                                         continue;
  77
  78                                 std::string maskptr = it->mask.substr(2);
  79
  80                                 if (InspIRCd::Match(user->GetFullRealHost(), maskptr) || match(user->GetFullHost(), maskptr) || (InspIRCd::Match(mask, maskptr, true)))
  81                                 {
  82                                         // They match an entry on the list, so let them pass this.
  83                                         return 1;
  84                                 }
  85                         }
  86                 }
  87
  88                 return 0;
  89         }
  90
  91         virtual int OnCheckStringExtBan(const std::string &str, Channel *chan, char type)
  92         {
  93                 if (chan != NULL)
  94                 {
  95                         modelist *list;
  96                         chan->GetExt(be->GetInfoKey(), list);
  97
  98                         if (!list)
  99                                 return 0;
 100                         for (modelist::iterator it = list->begin(); it != list->end(); it++)
 101                         {
 102                                 if (it->mask[0] != type || it->mask[1] != ':')
 103                                         continue;
 104
 105                                 std::string maskptr = it->mask.substr(2);
 106                                 if (InspIRCd::Match(str, maskptr))
 107                                         return 1; // matches
 108                         }
 109                 }
 110
 111                 return 0;
 112         }
 113
 114         virtual int OnCheckBan(User* user, Channel* chan)
 115         {
 116                 if (chan != NULL)
 117                 {
 118                         modelist* list;
 119                         chan->GetExt(be->GetInfoKey(), list);
 120
 121                         if (!list)
 122                         {
 123                                 // No list, proceed normally
 124                                 return 0;
 125                         }
 126
 127                         std::string mask = std::string(user->nick) + "!" + user->ident + "@" + user->GetIPString();
 128                         for (modelist::iterator it = list->begin(); it != list->end(); it++)
 129                         {
 130                                 if (InspIRCd::Match(user->GetFullRealHost(), it->mask) || match(user->GetFullHost(), it->mask) || (InspIRCd::Match(mask, it->mask, true)))
 131                                 {
 132                                         // They match an entry on the list, so let them in.
 133                                         return 1;
 134                                 }
 135                         }
 136                 }
 137                 return 0;
 138         }
 139
 140         virtual void OnCleanup(int target_type, void* item)
 141         {
 142                 be->DoCleanup(target_type, item);
 143         }
 144
 145         virtual void OnSyncChannel(Channel* chan, Module* proto, void* opaque)
 146         {
 147                 be->DoSyncChannel(chan, proto, opaque);
 148         }
 149
 150         virtual void OnChannelDelete(Channel* chan)
 151         {
 152                 be->DoChannelDelete(chan);
 153         }
 154
 155         virtual void OnRehash(User* user, const std::string &param)
 156         {
 157                 be->DoRehash();
 158         }
 159
 160         virtual const char* OnRequest(Request* request)
 161         {
 162                 ListModeRequest* LM = (ListModeRequest*)request;
 163                 if (strcmp("LM_CHECKLIST", request->GetId()) == 0)
 164                 {
 165                         modelist* list;
 166                         LM->chan->GetExt(be->GetInfoKey(), list);
 167                         if (list)
 168                         {
 169                                 std::string mask = std::string(LM->user->nick) + "!" + LM->user->ident + "@" + LM->user->GetIPString();
 170                                 for (modelist::iterator it = list->begin(); it != list->end(); it++)
 171                                 {
 172                                         if (InspIRCd::Match(LM->user->GetFullRealHost(), it->mask) || match(LM->user->GetFullHost(), it->mask) || (InspIRCd::Match(mask, it->mask, true)))
 173                                         {
 174                                                 // They match an entry
 175                                                 return (char*)it->mask.c_str();
 176                                         }
 177                                 }
 178                                 return NULL;
 179                         }
 180                 }
 181                 return NULL;
 182         }
 183
 184         virtual Version GetVersion()
 185         {
 186                 return Version(1, 2, 0, 3, VF_COMMON | VF_VENDOR, API_VERSION);
 187         }
 188
 189         virtual ~ModuleBanException()
 190         {
 191                 ServerInstance->Modes->DelMode(be);
 192                 delete be;
 193                 ServerInstance->Modules->UnpublishInterface("ChannelBanList", this);
 194         }
 195 };
 196
 197 MODULE_INIT(ModuleBanException)