src/modules/m_hostchange.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 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 "wildcard.h"
  16
  17 /* $ModDesc: Provides masking of user hostnames in a different way to m_cloaking */
  18
  19 /** Holds information on a host set by m_hostchange
  20  */
  21 class Host : public classbase
  22 {
  23  public:
  24         std::string action;
  25         std::string newhost;
  26         std::string ports;
  27 };
  28
  29 typedef std::map<std::string,Host*> hostchanges_t;
  30
  31 class ModuleHostChange : public Module
  32 {
  33  private:
  34         hostchanges_t hostchanges;
  35         std::string MySuffix;
  36         std::string MyPrefix;
  37         std::string MySeparator;
  38
  39  public:
  40         ModuleHostChange(InspIRCd* Me)
  41                 : Module(Me)
  42         {
  43                 OnRehash(NULL,"");
  44                 Implementation eventlist[] = { I_OnRehash, I_OnUserConnect };
  45                 ServerInstance->Modules->Attach(eventlist, this, 2);
  46         }
  47
  48         virtual ~ModuleHostChange()
  49         {
  50                 for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
  51                 {
  52                         delete i->second;
  53                 }
  54                 hostchanges.clear();
  55         }
  56
  57         void Prioritize()
  58         {
  59                 Module* cloak = ServerInstance->Modules->Find("m_cloaking.so");
  60                 ServerInstance->Modules->SetPriority(this, I_OnUserConnect, PRIO_AFTER, &cloak);
  61         }
  62
  63         void Implements(char* List)
  64         {
  65                 List[I_OnRehash] = List[I_OnUserConnect] = 1;
  66         }
  67
  68         virtual void OnRehash(User* user, const std::string &parameter)
  69         {
  70                 ConfigReader Conf(ServerInstance);
  71                 MySuffix = Conf.ReadValue("host","suffix",0);
  72                 MyPrefix = Conf.ReadValue("host","prefix","",0);
  73                 MySeparator = Conf.ReadValue("host","separator",".",0);
  74                 for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
  75                 {
  76                         delete i->second;
  77                 }
  78                 hostchanges.clear();
  79                 for (int index = 0; index < Conf.Enumerate("hostchange"); index++)
  80                 {
  81                         std::string mask = Conf.ReadValue("hostchange", "mask", index);
  82                         std::string ports = Conf.ReadValue("hosthange", "ports", index);
  83                         std::string action = Conf.ReadValue("hostchange", "action", index);
  84                         std::string newhost = Conf.ReadValue("hostchange", "value", index);
  85                         Host* x = new Host;
  86                         x->action = action;
  87                         x->ports = ports;
  88                         x->newhost = newhost;
  89                         hostchanges[mask] = x;
  90                 }
  91         }
  92
  93         virtual Version GetVersion()
  94         {
  95                 // returns the version number of the module to be
  96                 // listed in /MODULES
  97                 return Version(1,1,0,1,VF_VENDOR,API_VERSION);
  98         }
  99
 100         virtual void OnUserConnect(User* user)
 101         {
 102                 for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
 103                 {
 104                         if (((match(user->MakeHost(),i->first.c_str(),true)) || (match(user->MakeHostIP(),i->first.c_str()))))
 105                         {
 106                                 Host* h = i->second;
 107
 108                                 if (!h->ports.empty())
 109                                 {
 110                                         irc::portparser portrange(h->ports, false);
 111                                         long portno = -1;
 112                                         bool foundany = false;
 113
 114                                         while ((portno = portrange.GetToken()))
 115                                                 if (portno == user->GetPort())
 116                                                         foundany = true;
 117
 118                                         if (!foundany)
 119                                                 continue;
 120                                 }
 121
 122                                 // host of new user matches a hostchange tag's mask
 123                                 std::string newhost;
 124                                 if (h->action == "set")
 125                                 {
 126                                         newhost = h->newhost;
 127                                 }
 128                                 else if (h->action == "suffix")
 129                                 {
 130                                         newhost = MySuffix;
 131                                 }
 132                                 else if (h->action == "addnick")
 133                                 {
 134                                         // first take their nick and strip out non-dns, leaving just [A-Z0-9\-]
 135                                         std::string complete;
 136                                         std::string old = user->nick;
 137                                         for (unsigned int j = 0; j < old.length(); j++)
 138                                         {
 139                                                 if  (((old[j] >= 'A') && (old[j] <= 'Z')) ||
 140                                                     ((old[j] >= 'a') && (old[j] <= 'z')) ||
 141                                                     ((old[j] >= '0') && (old[j] <= '9')) ||
 142                                                     (old[j] == '-'))
 143                                                 {
 144                                                         complete = complete + old[j];
 145                                                 }
 146                                         }
 147                                         if (complete.empty())
 148                                                 complete = "i-have-a-lame-nick";
 149
 150                                         if (!MyPrefix.empty())
 151                                                 newhost = MyPrefix + MySeparator + complete;
 152                                         else
 153                                                 newhost = complete + MySeparator + MySuffix;
 154                                 }
 155                                 if (!newhost.empty())
 156                                 {
 157                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Setting your virtual host: " + newhost);
 158                                         if (!user->ChangeDisplayedHost(newhost.c_str()))
 159                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :Could not set your virtual host: " + newhost);
 160                                         return;
 161                                 }
 162                         }
 163                 }
 164         }
 165 };
 166
 167 MODULE_INIT(ModuleHostChange)