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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
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<TITLE>code/nel/src/net/login_server.cpp - view - 1.16</TITLE></HEAD>
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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="login_server.cpp?sortby=date"><IMG SRC="/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="login_server.cpp?sortby=date">login_server.cpp</A>
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Revision <B>1.16</B>, <i>Tue Mar 26 09:44:47 2002 UTC</i> (4 months ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>CVS Tags: <b>georges_v2, HEAD</b><BR>Changes since <b>1.15: +57 -20
lines</b><PRE>
CHANGED: unified the command format
</PRE>
</td></tr></table><HR noshade><PRE>/** \file login_server.cpp
* CLoginServer is the interface used by the front end to accepts authenticate users.
*
* $Id: login_server.cpp,v 1.16 2002/03/26 09:44:47 lecroart Exp $
*
*/
/* Copyright, 2000 Nevrax Ltd.
*
* This file is part of NEVRAX NEL.
* NEVRAX NEL is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
* NEVRAX NEL is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with NEVRAX NEL; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "stdnet.h"
#include "nel/net/callback_client.h"
#include "nel/net/service.h"
#include "nel/net/login_cookie.h"
#include "nel/net/login_server.h"
#include "nel/net/udp_sock.h"
using namespace std;
using namespace NLMISC;
namespace NLNET {
struct CPendingUser
{
CPendingUser (const CLoginCookie &cookie) : Cookie (cookie) { }
CLoginCookie Cookie;
};
static list<CPendingUser> PendingUsers;
static CCallbackServer *Server;
static string ListenAddr;
static TDisconnectClientCallback DisconnectClientCallback = NULL;
/// contains the correspondance between userid and the sockid
map<uint32, TSockId> UserIdSockAssociations;
TNewClientCallback NewClientCallback = NULL;
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
///////////// CONNECTION TO THE WELCOME SERVICE //////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
void cbWSChooseShard (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
// the WS call me that a new client want to come in my shard
string reason;
CLoginCookie cookie;
//
// S08: receive "CS" message from WS and send "SCS" message to WS
//
msgin.serial (cookie);
list<CPendingUser>::iterator it;
for (it = PendingUsers.begin(); it != PendingUsers.end (); it++)
{
if ((*it).Cookie == cookie)
{
// the cookie already exists, erase it and return false
nlwarning ("cookie %s is already in the pending user list", cookie.toString().c_str());
PendingUsers.erase (it);
reason = "cookie already exists";
break;
}
}
if (it == PendingUsers.end ())
{
// add it to the awaiting client
PendingUsers.push_back (CPendingUser (cookie));
reason = "";
}
CMessage msgout (CNetManager::getSIDA ("WS"), "SCS");
msgout.serial (reason);
msgout.serial (cookie);
msgout.serial (ListenAddr);
CNetManager::send ("WS", msgout);
}
void cbWSChooseShard5 (CMessage &msgin, const std::string &serviceName, uint16 sid)
{
// the WS call me that a new client want to come in my shard
string reason;
CLoginCookie cookie;
//
// S08: receive "CS" message from WS and send "SCS" message to WS
//
msgin.serial (cookie);
list<CPendingUser>::iterator it;
for (it = PendingUsers.begin(); it != PendingUsers.end (); it++)
{
if ((*it).Cookie == cookie)
{
// the cookie already exists, erase it and return false
nlwarning ("cookie %s is already in the pending user list", cookie.toString().c_str());
PendingUsers.erase (it);
reason = "cookie already exists";
break;
}
}
if (it == PendingUsers.end ())
{
// add it to the awaiting client
nlinfo ("New cookie %s inserted in the pending user list (awaiting new client)", cookie.toString().c_str());
PendingUsers.push_back (CPendingUser (cookie));
reason = "";
}
CMessage msgout ("SCS");
msgout.serial (reason);
msgout.serial (cookie);
msgout.serial (ListenAddr);
CUnifiedNetwork::getInstance()->send ("WS", msgout);
}
void cbWSDisconnectClient5 (CMessage &msgin, const std::string &serviceName, uint16 sid)
{
// the WS tells me that i have to disconnect a client
uint32 userid;
msgin.serial (userid);
map<uint32, TSockId>::iterator it = UserIdSockAssociations.find (userid);
if (it == UserIdSockAssociations.end ())
{
nlwarning ("Can't disconnect the user %d, he is not found", userid);
}
else
{
nlinfo ("Disconnect the user %d", userid);
Server->disconnect ((*it).second);
}
if (DisconnectClientCallback != NULL)
{
DisconnectClientCallback (userid);
}
}
void cbWSDisconnectClient (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
cbWSDisconnectClient5 (msgin, "", 0);
}
static TCallbackItem WSCallbackArray[] =
{
{ "CS", cbWSChooseShard },
{ "DC", cbWSDisconnectClient },
};
static TUnifiedCallbackItem WSCallbackArray5[] =
{
{ "CS", cbWSChooseShard5 },
{ "DC", cbWSDisconnectClient5 },
};
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
///////////// CONNECTION TO THE CLIENT ///////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
void cbShardValidation (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
//
// S13: receive "SV" message from client
//
// the client send me a cookie
CLoginCookie cookie;
string reason;
msgin.serial (cookie);
// verify that the user was pending
reason = CLoginServer::isValidCookie (cookie);
CMessage msgout2 (netbase.getSIDA (), "SV");
msgout2.serial (reason);
netbase.send (msgout2, from);
if (!reason.empty())
{
nlwarning ("User (%s) is not in the pending user list (cookie:%s)", netbase.hostAddress(from).asString().c_str(), cookie.toString().c_str());
// deconnect him
netbase.disconnect (from);
}
else
{
// add the user association
uint32 userid = cookie.getUserId();
UserIdSockAssociations.insert (make_pair(userid, from));
// identification OK, let's call the user callback
if (NewClientCallback != NULL)
NewClientCallback (from, cookie);
// ok, now, he can call all callback
Server->authorizeOnly (NULL, from);
}
}
void ClientConnection (TSockId from, void *arg)
{
nldebug("new client connection: %s", from->asString ().c_str ());
// the client could only call "SV" message
Server->authorizeOnly ("SV", from);
}
static const TCallbackItem ClientCallbackArray[] =
{
{ "SV", cbShardValidation },
};
void cfcbListenAddress (CConfigFile::CVar &var)
{
// set the new ListenAddr
ListenAddr = var.asString();
// is the var is empty or not found, take it from the listenAddress()
if (ListenAddr.empty())
{
ListenAddr = Server->listenAddress ().asIPString();
}
nlinfo("Listen Address trapped '%s'", ListenAddr.c_str());
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
///////////// CONNECTION TO THE WELCOME SERVICE //////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////
void CLoginServer::init (CCallbackServer &server, TNewClientCallback ncl)
{
// connect to the welcome service
connectToWS ();
// add callback to the server
server.addCallbackArray (ClientCallbackArray, sizeof (ClientCallbackArray) / sizeof (ClientCallbackArray[0]));
server.setConnectionCallback (ClientConnection, NULL);
try
{
cfcbListenAddress (IService::getInstance()->ConfigFile.getVar("ListenAddress"));
IService::getInstance()->ConfigFile.setCallback("ListenAddress", cfcbListenAddress);
}
catch(Exception &)
{
}
// if the listen addr is not in the config file, try to find it dynamically
if (ListenAddr.empty())
{
ListenAddr = server.listenAddress ().asIPString();
}
nlinfo("Listen Address trapped '%s'", ListenAddr.c_str());
NewClientCallback = ncl;
Server = &server;
}
void CLoginServer::init (CUdpSock &server, TDisconnectClientCallback dc)
{
// connect to the welcome service
connectToWS ();
try
{
cfcbListenAddress (IService::getInstance()->ConfigFile.getVar("ListenAddress"));
IService::getInstance()->ConfigFile.setCallback("ListenAddress", cfcbListenAddress);
}
catch(Exception &)
{
}
// if the listen addr is not in the config file, try to find it dynamically
if (ListenAddr.empty())
{
ListenAddr = server.localAddr ().asIPString();
}
nlinfo("Listen Addresss trapped '%s'", ListenAddr.c_str());
DisconnectClientCallback = dc;
}
string CLoginServer::isValidCookie (const CLoginCookie &lc)
{
// verify that the user was pending
list<CPendingUser>::iterator it;
for (it = PendingUsers.begin(); it != PendingUsers.end (); it++)
{
if ((*it).Cookie == lc)
{
// ok, it was validate, remove it
PendingUsers.erase (it);
// warn the WS that the client effectively connected
uint8 con = 1;
CMessage msgout ("CC");
uint32 userid = lc.getUserId();
msgout.serial (userid);
msgout.serial (con);
if (CUnifiedNetwork::isUsed ())
{
CUnifiedNetwork::getInstance()->send("WS", msgout);
}
else
{
CNetManager::send("WS", msgout);
}
return "";
}
}
return "I didn't receive the cookie from WS";
}
void CLoginServer::connectToWS ()
{
if (CUnifiedNetwork::isUsed ())
{
CUnifiedNetwork::getInstance()->addCallbackArray(WSCallbackArray5, sizeof(WSCallbackArray5)/sizeof(WSCallbackArray5[0]));
}
else
{
CNetManager::addClient ("WS");
CNetManager::addCallbackArray ("WS", WSCallbackArray, sizeof (WSCallbackArray) / sizeof (WSCallbackArray[0]));
CMessage msg("UN_SIDENT");
nlassert (IService::getInstance());
uint16 ssid = IService::getInstance()->getServiceId();
string name = IService::getInstance()->getServiceShortName();
msg.serial(name);
msg.serial(ssid); // serializes a 16 bits service id
CNetManager::send("WS", msg);
}
}
void CLoginServer::clientDisconnected (uint32 userId)
{
uint8 con = 0;
CMessage msgout ("CC");
msgout.serial (userId);
msgout.serial (con);
if (CUnifiedNetwork::isUsed ())
{
CUnifiedNetwork::getInstance()->send("WS", msgout);
}
else
{
CNetManager::send("WS", msgout);
}
// remove the user association
UserIdSockAssociations.erase (userId);
}
//
// Commands
//
NLMISC_COMMAND (lsUsers, "displays the list of all connected users", "")
{
if(args.size() != 0) return false;
log.displayNL ("Display the %d connected users :", UserIdSockAssociations.size());
for (map<uint32, TSockId>::iterator it = UserIdSockAssociations.begin(); it != UserIdSockAssociations.end (); it++)
{
log.displayNL ("> %u %s", (*it).first, (*it).second->asString().c_str());
}
log.displayNL ("End ot the list");
return true;
}
NLMISC_COMMAND (lsPending, "displays the list of all pending users", "")
{
if(args.size() != 0) return false;
log.displayNL ("Display the %d pending users :", PendingUsers.size());
for (list<CPendingUser>::iterator it = PendingUsers.begin(); it != PendingUsers.end (); it++)
{
log.displayNL ("> %s", (*it).Cookie.toString().c_str());
}
log.displayNL ("End ot the list");
return true;
}
NLMISC_DYNVARIABLE(string, LSListenAddress, "the listen address sended to the client to connect on this front_end")
{
if (get)
{
*pointer = ListenAddr;
}
else
{
if ((*pointer).find (":") == string::npos)
{
log.displayNL ("You must set the address + port (ie: \"itsalive.nevrax.org:38000\")");
return;
}
else if ((*pointer).empty())
{
ListenAddr = Server->listenAddress ().asIPString();
}
else
{
ListenAddr = *pointer;
}
log.displayNL ("Listen Address trapped '%s'", ListenAddr.c_str());
}
}
} // NLNET
/////////////////////////////////////////////
/////////////////////////////////////////////
/////////////////////////////////////////////
/*
#include "v2/service.h"
using namespace std;
using namespace NLNET;
void ClientConnection (TSockId from, const CLoginCookie &cookie)
{
nlinfo("player (%d) comes in", cookie.getUserId());
from->setAppId (cookie.getUserId());
}
void ClientDisconnection (TSockId from, void *arg)
{
nlinfo("player (%d) leaves", from->appId());
CLoginServer::clientDisconnected (from->appId());
}
class CFrontEndService : public NLNET::IService
{
public:
/// Init the service, load the universal time.
void init ()
{
CLoginServer::init (dynamic_cast<CCallbackServer&>(*CNetManager::getNetBase ("FES")), ClientConnection);
CNetManager::getNetBase ("FES")->setDisconnectionCallback (ClientDisconnection, NULL);
}
};
/// Naming Service
NLNET_SERVICE_MAIN (CFrontEndService, "FES", "front_end_service", 0);
*/
</PRE>
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