src/modules/m_hostchange.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 "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
  64         virtual void OnRehash(User* user, const std::string &parameter)
  65         {
  66                 ConfigReader Conf(ServerInstance);
  67                 MySuffix = Conf.ReadValue("host","suffix",0);
  68                 MyPrefix = Conf.ReadValue("host","prefix","",0);
  69                 MySeparator = Conf.ReadValue("host","separator",".",0);
  70                 for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
  71                 {
  72                         delete i->second;
  73                 }
  74                 hostchanges.clear();
  75                 for (int index = 0; index < Conf.Enumerate("hostchange"); index++)
  76                 {
  77                         std::string mask = Conf.ReadValue("hostchange", "mask", index);
  78                         std::string ports = Conf.ReadValue("hosthange", "ports", index);
  79                         std::string action = Conf.ReadValue("hostchange", "action", index);
  80                         std::string newhost = Conf.ReadValue("hostchange", "value", index);
  81                         Host* x = new Host;
  82                         x->action = action;
  83                         x->ports = ports;
  84                         x->newhost = newhost;
  85                         hostchanges[mask] = x;
  86                 }
  87         }
  88
  89         virtual Version GetVersion()
  90         {
  91                 // returns the version number of the module to be
  92                 // listed in /MODULES
  93                 return Version(1,2,0,1,VF_VENDOR,API_VERSION);
  94         }
  95
  96         virtual void OnUserConnect(User* user)
  97         {
  98                 for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
  99                 {
 100                         if (((match(user->MakeHost(),i->first.c_str(),true)) || (match(user->MakeHostIP(),i->first.c_str()))))
 101                         {
 102                                 Host* h = i->second;
 103
 104                                 if (!h->ports.empty())
 105                                 {
 106                                         irc::portparser portrange(h->ports, false);
 107                                         long portno = -1;
 108                                         bool foundany = false;
 109
 110                                         while ((portno = portrange.GetToken()))
 111                                                 if (portno == user->GetPort())
 112                                                         foundany = true;
 113
 114                                         if (!foundany)
 115                                                 continue;
 116                                 }
 117
 118                                 // host of new user matches a hostchange tag's mask
 119                                 std::string newhost;
 120                                 if (h->action == "set")
 121                                 {
 122                                         newhost = h->newhost;
 123                                 }
 124                                 else if (h->action == "suffix")
 125                                 {
 126                                         newhost = MySuffix;
 127                                 }
 128                                 else if (h->action == "addnick")
 129                                 {
 130                                         // first take their nick and strip out non-dns, leaving just [A-Z0-9\-]
 131                                         std::string complete;
 132                                         std::string old = user->nick;
 133                                         for (unsigned int j = 0; j < old.length(); j++)
 134                                         {
 135                                                 if  (((old[j] >= 'A') && (old[j] <= 'Z')) ||
 136                                                     ((old[j] >= 'a') && (old[j] <= 'z')) ||
 137                                                     ((old[j] >= '0') && (old[j] <= '9')) ||
 138                                                     (old[j] == '-'))
 139                                                 {
 140                                                         complete = complete + old[j];
 141                                                 }
 142                                         }
 143                                         if (complete.empty())
 144                                                 complete = "i-have-a-lame-nick";
 145
 146                                         if (!MyPrefix.empty())
 147                                                 newhost = MyPrefix + MySeparator + complete;
 148                                         else
 149                                                 newhost = complete + MySeparator + MySuffix;
 150                                 }
 151                                 if (!newhost.empty())
 152                                 {
 153                                         user->WriteServ("NOTICE "+std::string(user->nick)+" :Setting your virtual host: " + newhost);
 154                                         if (!user->ChangeDisplayedHost(newhost.c_str()))
 155                                                 user->WriteServ("NOTICE "+std::string(user->nick)+" :Could not set your virtual host: " + newhost);
 156                                         return;
 157                                 }
 158                         }
 159                 }
 160         }
 161 };
 162
 163 MODULE_INIT(ModuleHostChange)