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