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