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 "xline.h"
  19 #include "transport.h"
  20 #include "m_hash.h"
  21 #include "socketengine.h"
  22
  23 #include "m_spanningtree/main.h"
  24 #include "m_spanningtree/utils.h"
  25 #include "m_spanningtree/treeserver.h"
  26 #include "m_spanningtree/link.h"
  27 #include "m_spanningtree/treesocket.h"
  28 #include "m_spanningtree/resolvers.h"
  29 #include "m_spanningtree/handshaketimer.h"
  30
  31 /* $ModDep: 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 m_spanningtree/handshaketimer.h */
  32
  33 bool TreeSocket::ParseUID(const std::string &source, std::deque<std::string> &params)
  34 {
  35         /** Do we have enough parameters:
  36          *      0    1    2    3    4    5        6        7     8        9       (n-1)
  37          * UID uuid age nick host dhost ident ip.string signon +modes (modepara) :gecos
  38          */
  39         if (params.size() < 10)
  40         {
  41                 if (!params.empty())
  42                         this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction ("+params[0]+" with only "+
  43                                         ConvToStr(params.size())+" of 10 or more parameters?)");
  44                 return true;
  45         }
  46
  47         time_t age_t = ConvToInt(params[1]);
  48         time_t signon = ConvToInt(params[7]);
  49         std::string empty;
  50
  51         TreeServer* remoteserver = Utils->FindServer(source);
  52
  53         if (!remoteserver)
  54         {
  55                 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Unknown server "+source+")");
  56                 return true;
  57         }
  58
  59         /* Check parameters for validity before introducing the client, discovered by dmb */
  60         if (!age_t)
  61         {
  62                 this->WriteLine(std::string(":")+this->Instance->Config->GetSID()+" KILL "+params[0]+" :Invalid client introduction (Invalid TS?)");
  63                 return true;
  64         }
  65
  66         /* check for collision */
  67         user_hash::iterator iter = this->Instance->Users->clientlist->find(params[2]);
  68
  69         if (iter != this->Instance->Users->clientlist->end())
  70         {
  71                 /*
  72                  * Nick collision.
  73                  */
  74                 Instance->Logs->Log("m_spanningtree",DEBUG,"*** Collision on %s", params[2].c_str());
  75                 int collide = this->DoCollision(iter->second, age_t, params[5], params[8], params[0]);
  76
  77                 if (collide == 2)
  78                 {
  79                         /* remote client changed, make sure we change their nick for the hash too */
  80                         params[2] = params[0];
  81                 }
  82         }
  83
  84         /* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically
  85          * sets it up in the UUID hash for us.
  86          */
  87         User* _new = NULL;
  88         try
  89         {
  90                 _new = new User(this->Instance, params[0]);
  91         }
  92         catch (...)
  93         {
  94                 SendError("Protocol violation - Duplicate UUID '" + params[0] + "' on introduction of new user");
  95                 return false;
  96         }
  97         (*(this->Instance->Users->clientlist))[params[2]] = _new;
  98         _new->SetFd(FD_MAGIC_NUMBER);
  99         _new->nick.assign(params[2], 0, MAXBUF);
 100         _new->host.assign(params[3], 0, 64);
 101         _new->dhost.assign(params[4], 0, 64);
 102         _new->server = this->Instance->FindServerNamePtr(remoteserver->GetName().c_str());
 103         _new->ident.assign(params[5], 0, MAXBUF);
 104         _new->fullname.assign(params[params.size() - 1], 0, MAXBUF);
 105         _new->registered = REG_ALL;
 106         _new->signon = signon;
 107         _new->age = age_t;
 108
 109         /* we need to remove the + from the modestring, so we can do our stuff */
 110         std::string::size_type pos_after_plus = params[8].find_first_not_of('+');
 111         if (pos_after_plus != std::string::npos)
 112         params[8] = params[8].substr(pos_after_plus);
 113
 114         unsigned int paramptr = 9;
 115         for (std::string::iterator v = params[8].begin(); v != params[8].end(); v++)
 116         {
 117                 /* For each mode thats set, increase counter */
 118                 ModeHandler* mh = Instance->Modes->FindMode(*v, MODETYPE_USER);
 119
 120                 if (mh)
 121                 {
 122                         if (mh->GetNumParams(true))
 123                         {
 124                                 if (paramptr < params.size() - 1)
 125                                         mh->OnModeChange(_new, _new, NULL, params[paramptr++], true);
 126                                 else
 127                                         Instance->Logs->Log("m_spanningtree", DEBUG, "Warning: Broken UID command, expected a parameter for user mode '%c' but there aren't enough parameters in the command!", *v);
 128                         }
 129                         else
 130                                 mh->OnModeChange(_new, _new, NULL, empty, true);
 131                         _new->SetMode(*v, true);
 132                         mh->ChangeCount(1);
 133                 }
 134                 else
 135                         Instance->Logs->Log("m_spanningtree", DEBUG, "Warning: Broken UID command, unknown user mode '%c' in the mode string!", *v);
 136         }
 137
 138         //_new->ProcessNoticeMasks(params[7].c_str());
 139
 140         /* now we've done with modes processing, put the + back for remote servers */
 141         params[8] = "+" + params[8];
 142
 143 #ifdef SUPPORT_IP6LINKS
 144         if (params[6].find_first_of(":") != std::string::npos)
 145                 _new->SetSockAddr(AF_INET6, params[6].c_str(), 0);
 146         else
 147 #endif
 148                 _new->SetSockAddr(AF_INET, params[6].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.c_str(), _new->ident.c_str(), _new->host.c_str(), _new->GetIPString(), _new->fullname.c_str());
 159
 160         params[params.size() - 1] = ":" + params[params.size() - 1];
 161         Utils->DoOneToAllButSender(source, "UID", params, source);
 162
 163         Instance->PI->Introduce(_new);
 164         FOREACH_MOD_I(Instance,I_OnPostConnect,OnPostConnect(_new));
 165
 166         return true;
 167 }
 168