src/modules/m_spanningtree/uid.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 "commands/cmd_whois.h"
  16 #include "commands/cmd_stats.h"
  17 #include "socket.h"
  18 #include "wildcard.h"
  19 #include "xline.h"
  20 #include "transport.h"
  21 #include "m_hash.h"
  22 #include "socketengine.h"
  23
  24 #include "m_spanningtree/main.h"
  25 #include "m_spanningtree/utils.h"
  26 #include "m_spanningtree/treeserver.h"
  27 #include "m_spanningtree/link.h"
  28 #include "m_spanningtree/treesocket.h"
  29 #include "m_spanningtree/resolvers.h"
  30 #include "m_spanningtree/handshaketimer.h"
  31
  32 /* $ModDep: m_spanningtree/timesynctimer.h m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h m_hash.h */
  33
  34 bool TreeSocket::ParseUID(const std::string &source, std::deque<std::string> &params)
  35 {
  36         /** Do we have enough parameters:
  37          * UID uuid age nick host dhost ident +modestr ip.string :gecos
  38          */
  39         if (params.size() != 10)
  40         {
  41                 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction ("+params[0]+" with only "+
  42                                 ConvToStr(params.size())+" of 10 parameters?)");
  43                 return true;
  44         }
  45
  46         time_t age_t = ConvToInt(params[1]);
  47         time_t signon = ConvToInt(params[8]);
  48         const char* tempnick = params[2].c_str();
  49         std::string empty;
  50
  51         /* XXX probably validate UID length too -- w00t */
  52         cmd_validation valid[] = { {"Nickname", 2, NICKMAX}, {"Hostname", 3, 64}, {"Displayed hostname", 4, 64}, {"Ident", 5, IDENTMAX + 1}, {"GECOS", 9, MAXGECOS}, {"", 0, 0} };
  53
  54         TreeServer* remoteserver = Utils->FindServer(source);
  55
  56         if (!remoteserver)
  57         {
  58                 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Unknown server "+source+")");
  59                 return true;
  60         }
  61
  62         /* Check parameters for validity before introducing the client, discovered by dmb */
  63         if (!age_t)
  64         {
  65                 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Invalid TS?)");
  66                 return true;
  67         }
  68
  69         for (size_t x = 0; valid[x].length; ++x)
  70         {
  71                 if (params[valid[x].param].length() > valid[x].length)
  72                 {
  73                         this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (" + valid[x].item + " > " + ConvToStr(valid[x].length) + ")");
  74                         return true;
  75                 }
  76         }
  77
  78
  79         /* check for collision */
  80         user_hash::iterator iter = this->Instance->Users->clientlist->find(tempnick);
  81
  82         if (iter != this->Instance->Users->clientlist->end())
  83         {
  84                 /*
  85                  * Nick collision.
  86                  */
  87                 Instance->Log(DEBUG,"*** Collision on %s", tempnick);
  88                 int collide = this->DoCollision(iter->second, age_t, params[5].c_str(), params[7].c_str(), params[0].c_str());
  89
  90                 if (collide == 2)
  91                 {
  92                         /* remote client changed, make sure we change their nick for the hash too */
  93                         tempnick = params[0].c_str();
  94                 }
  95         }
  96
  97         /* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically
  98          * sets it up in the UUID hash for us.
  99          */
 100         User* _new = NULL;
 101         try
 102         {
 103                 _new = new User(this->Instance, params[0]);
 104         }
 105         catch (...)
 106         {
 107                 SendError("Protocol violation - Duplicate UUID '" + params[0] + "' on introduction of new user");
 108                 return false;
 109         }
 110         (*(this->Instance->Users->clientlist))[tempnick] = _new;
 111         _new->SetFd(FD_MAGIC_NUMBER);
 112         strlcpy(_new->nick, tempnick, NICKMAX - 1);
 113         strlcpy(_new->host, params[3].c_str(),64);
 114         strlcpy(_new->dhost, params[4].c_str(),64);
 115         _new->server = this->Instance->FindServerNamePtr(remoteserver->GetName().c_str());
 116         strlcpy(_new->ident, params[5].c_str(),IDENTMAX + 1);
 117         strlcpy(_new->fullname, params[9].c_str(),MAXGECOS);
 118         _new->registered = REG_ALL;
 119         _new->signon = signon;
 120         _new->age = age_t;
 121
 122         /* we need to remove the + from the modestring, so we can do our stuff */
 123         std::string::size_type pos_after_plus = params[6].find_first_not_of('+');
 124         if (pos_after_plus != std::string::npos)
 125         params[6] = params[6].substr(pos_after_plus);
 126
 127         for (std::string::iterator v = params[6].begin(); v != params[6].end(); v++)
 128         {
 129                 /* For each mode thats set, increase counter */
 130                 ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER);
 131
 132                 if (mh)
 133                 {
 134                         mh->OnModeChange(_new, _new, NULL, empty, true);
 135                         _new->SetMode(*v, true);
 136                         mh->ChangeCount(1);
 137                 }
 138         }
 139
 140         /* now we've done with modes processing, put the + back for remote servers */
 141         params[6] = "+" + params[6];
 142
 143 #ifdef SUPPORT_IP6LINKS
 144         if (params[7].find_first_of(":") != std::string::npos)
 145                 _new->SetSockAddr(AF_INET6, params[7].c_str(), 0);
 146         else
 147 #endif
 148                 _new->SetSockAddr(AF_INET, params[7].c_str(), 0);
 149
 150         Instance->Users->AddGlobalClone(_new);
 151
 152         bool dosend = true;
 153
 154         if ((this->Utils->quiet_bursts && remoteserver->bursting) || this->Instance->SilentULine(_new->server))
 155                 dosend = false;
 156
 157         if (dosend)
 158                 this->Instance->SNO->WriteToSnoMask('C',"Client connecting at %s: %s!%s@%s [%s] [%s]",_new->server,_new->nick,_new->ident,_new->host, _new->GetIPString(), _new->fullname);
 159
 160         params[9] = ":" + params[9];
 161         Utils->DoOneToAllButSender(source, "UID", params, source);
 162
 163         FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
 164
 165         return true;
 166 }
 167