src/modules/m_channames.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/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
  16 /* $ModDesc: Implements config tags which allow changing characters allowed in channel names */
  17
  18 static bool allowedmap[256];
  19
  20 class NewIsChannelHandler : public HandlerBase2<bool, const char*, size_t>
  21 {
  22         InspIRCd* Server;
  23  public:
  24         NewIsChannelHandler(InspIRCd* Srv) : Server(Srv) { }
  25         virtual ~NewIsChannelHandler() { }
  26         virtual bool Call(const char*, size_t);
  27 };
  28
  29 bool NewIsChannelHandler::Call(const char* chname, size_t max)
  30 {
  31                 const char *c = chname + 1;
  32
  33                 /* check for no name - don't check for !*chname, as if it is empty, it won't be '#'! */
  34                 if (!chname || *chname != '#')
  35                         return false;
  36
  37                 while (*c)
  38                         if (!allowedmap[(unsigned int)(*c++)]) return false;
  39
  40                 size_t len = c - chname;
  41                 return len <= max;
  42 }
  43
  44 class ModuleChannelNames : public Module
  45 {
  46  private:
  47         InspIRCd* ServerInstance;
  48         NewIsChannelHandler* myhandler;
  49         caller2<bool, const char*, size_t> * rememberer;
  50         bool badchan;
  51
  52  public:
  53         ModuleChannelNames(InspIRCd* Me) : Module(Me)
  54         {
  55                 rememberer = (caller2<bool, const char*, size_t> *) malloc(sizeof(caller2<bool, const char*, size_t>));
  56                 ServerInstance = Me;
  57                 *rememberer = ServerInstance->IsChannel;
  58                 myhandler = new NewIsChannelHandler(ServerInstance);
  59                 ServerInstance->IsChannel = myhandler;
  60                 badchan = false;
  61                 Implementation eventlist[] = { I_OnRehash, I_OnUserKick };
  62                 ServerInstance->Modules->Attach(eventlist, this, 2);
  63                 OnRehash(NULL);
  64         }
  65
  66         void ValidateChans()
  67         {
  68                 badchan = true;
  69                 std::vector<Channel*> chanvec;
  70                 for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); ++i)
  71                 {
  72                         if (!ServerInstance->IsChannel(i->second->name.c_str(), MAXBUF))
  73                                 chanvec.push_back(i->second);
  74                 }
  75                 std::vector<Channel*>::reverse_iterator c2 = chanvec.rbegin();
  76                 while (c2 != chanvec.rend())
  77                 {
  78                         Channel* c = *c2++;
  79                         if (c->IsModeSet('P') && c->GetUserCounter())
  80                         {
  81                                 std::vector<std::string> modes;
  82                                 modes.push_back(c->name);
  83                                 modes.push_back("-P");
  84
  85                                 ServerInstance->SendMode(modes, ServerInstance->FakeClient);
  86                                 ServerInstance->PI->SendMode(c->name, ServerInstance->Modes->GetLastParseParams(), ServerInstance->Modes->GetLastParseTranslate());
  87                         }
  88                         const UserMembList* users = c->GetUsers();
  89                         for(UserMembCIter j = users->begin(); j != users->end(); ++j)
  90                                 if (IS_LOCAL(j->first) && !c->ServerKickUser(j->first, "Channel name no longer valid", NULL))
  91                                         delete c;
  92                 }
  93                 badchan = false;
  94         }
  95
  96         virtual void OnRehash(User* user)
  97         {
  98                 ConfigReader Conf(ServerInstance);
  99                 std::string denyToken = Conf.ReadValue("channames", "denyrange", 0);
 100                 std::string allowToken = Conf.ReadValue("channames", "allowrange", 0);
 101                 memset(allowedmap, 1, sizeof(allowedmap));
 102
 103                 irc::portparser denyrange(denyToken, false);
 104                 int denyno = -1;
 105                 while (0 != (denyno = denyrange.GetToken()))
 106                         allowedmap[(unsigned char)(denyno)] = false;
 107
 108                 irc::portparser allowrange(allowToken, false);
 109                 int allowno = -1;
 110                 while (0 != (allowno = allowrange.GetToken()))
 111                         allowedmap[(unsigned char)(allowno)] = true;
 112
 113                 allowedmap[7] = false;
 114                 allowedmap[' '] = false;
 115                 allowedmap[','] = false;
 116
 117                 ValidateChans();
 118         }
 119
 120         virtual void OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& except_list)
 121         {
 122                 if (badchan)
 123                 {
 124                         const UserMembList* users = memb->chan->GetUsers();
 125                         for(UserMembCIter i = users->begin(); i != users->end(); i++)
 126                                 if (i->first != memb->user)
 127                                         except_list.insert(i->first);
 128                 }
 129         }
 130
 131         virtual ~ModuleChannelNames()
 132         {
 133                 delete myhandler;
 134                 ServerInstance->IsChannel = *rememberer;
 135                 free(rememberer);
 136                 ValidateChans();
 137         }
 138
 139         virtual Version GetVersion()
 140         {
 141                 return Version("$Id$", VF_VENDOR,API_VERSION);
 142         }
 143 };
 144
 145 MODULE_INIT(ModuleChannelNames)