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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
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<TITLE>code/nelns/login_service/connection_client.cpp - view - 1.11</TITLE></HEAD>
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<table width="100%" border=0 cellspacing=0 cellpadding=1 bgcolor="#aaaaaa"><tr valign=bottom><td><a href="connection_client.cpp?sortby=author"><IMG SRC="/inc/img/picto-up.gif" ALT="[BACK]" BORDER="0" WIDTH="14" HEIGHT="13"></a> <b>Return to <A HREF="connection_client.cpp?sortby=author">connection_client.cpp</A>
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Revision <B>1.11</B>, <i>Mon Mar 25 09:29:24 2002 UTC</i> (4 months ago) by <i>lecroart</i>
<BR>Branch: <b>MAIN</b>
<BR>CVS Tags: <b>HEAD</b><BR>Changes since <b>1.10: +3 -3
lines</b><PRE>
CHANGED: use new service functions
</PRE>
</td></tr></table><HR noshade><PRE>/** \file login_service.cpp
* Login Service (LS)
*
* $Id: connection_client.cpp,v 1.11 2002/03/25 09:29:24 lecroart Exp $
*
*/
/* Copyright, 2000 Nevrax Ltd.
*
* This file is part of NEVRAX NeL Network Services.
* NEVRAX NeL Network Services 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 Network Services 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 Network Services; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#include "nel/misc/types_nl.h"
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <vector>
#include <map>
#include "nel/misc/debug.h"
#include "nel/misc/config_file.h"
#include "nel/misc/displayer.h"
#include "nel/misc/log.h"
#include "nel/net/service.h"
#include "nel/net/net_manager.h"
#include "nel/net/login_cookie.h"
#include "login_service.h"
#define CRYPT_PASSWORD 1
#if defined(NL_OS_UNIX) && CRYPT_PASSWORD
extern "C" char *crypt (const char *__key, const char *__salt);
#endif
using namespace std;
using namespace NLMISC;
using namespace NLNET;
// These functions enable crypting password, work only on unix
const uint32 EncryptedSize = 13;
// Get a number between 0 and 64, used by cryptPassword
static uint32 rand64 ()
{
return (uint32) floor(64.0*(double)rand()/((double)RAND_MAX+1.0));
}
// Crypt a password
string cryptPassword (const string &password)
{
#if defined(NL_OS_UNIX) && CRYPT_PASSWORD
if (CryptPassword)
{
char Salt[3];
static char SaltString[65] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./";
Salt[0] = SaltString[rand64()];
Salt[1] = SaltString[rand64()];
Salt[2] = '\0';
return string (crypt (password.c_str(), Salt));
}
else
return password;
#else
return password;
#endif
}
// Check if a password is valid
bool checkPassword (const string &password, const string &encrypted)
{
#if defined(NL_OS_UNIX) && CRYPT_PASSWORD
if (CryptPassword)
{
char Salt[3];
if (encrypted.size() != EncryptedSize)
{
nlwarning ("checkPassword(): \"%s\" is not a valid encrypted password", encrypted.c_str());
return false;
}
Salt[0] = encrypted[0];
Salt[1] = encrypted[1];
Salt[2] = '\0';
return encrypted == crypt (password.c_str(), Salt);
}
else
{
return encrypted == password;
}
#else
return encrypted == password;
#endif
}
sint findUser (string &login)
{
for (sint i = 0; i < (sint) Users.size (); i++)
{
if (Users[i].Login == login)
{
return i;
}
}
// user not found
return -1;
}
void addUser (string &login, string &password)
{
if (findUser (login) == -1)
{
Users.push_back (CUser (login, cryptPassword(password)));
writePlayerDatabase ();
}
else
{
nlwarning ("user '%s' already exists in the base", login.c_str ());
}
}
sint userToLog(sint userPos)
{
if (userPos == -1) return userPos;
else return Users[userPos].Id;
}
bool stringIsStandard(const string &str)
{
for (sint i = 0; i < (sint) str.size(); i++)
{
if (!isalnum (str[i])) return false;
}
return true;
}
bool havePrivilege (string userPriv, string shardPriv)
{
if (userPriv == "::")
{
return shardPriv == "::";
}
else
{
if (shardPriv == "::")
return true;
else
return userPriv.find (shardPriv) != string::npos;
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////
/////////////// CONNECTION TO THE CLIENTS //////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Callback for service unregistration.
*
* Message expected :
* - nothing
*/
static void cbClientVerifyLoginPassword (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
// reason is empty if everything goes right or contains the reason of the failure
string reason = "";
//
// S03: check the validity of the client login/password and send "VLP" message to client
//
string Login, Password;
msgin.serial (Login);
msgin.serial (Password);
sint userPos = findUser (Login);
const CInetAddress &ia = netbase.hostAddress (from);
Output.displayNL ("***: %3d Login '%s' Ip '%s'", userToLog(userPos), Login.c_str(), ia.asString().c_str());
// recv the client version and check it
uint32 ClientVersion;
msgin.serial (ClientVersion);
if (ClientVersion < ServerVersion || ClientVersion > ServerVersion)
{
// reject the use, bad version
if (ClientVersion < ServerVersion)
reason = "Your client is out of date. You have to download the last version.";
else
reason = "Your client is too new compare to the server. You have to get an older version of the client.";
Output.displayNL ("---: %3d Bad Version, ClientVersion: %d ServerVersion: %d", userToLog(userPos), ClientVersion, ServerVersion);
}
// recv client hardware info
string OS, Proc, Mem, Gfx;
msgin.serial (OS);
msgin.serial (Proc);
msgin.serial (Mem);
msgin.serial (Gfx);
if (!OS.empty()) Output.displayNL ("OS : %3d %s", userToLog(userPos), OS.c_str());
if (!Proc.empty()) Output.displayNL ("PRC: %3d %s", userToLog(userPos), Proc.c_str());
if (!Mem.empty()) Output.displayNL ("MEM: %3d %s", userToLog(userPos), Mem.c_str());
if (!Gfx.empty()) Output.displayNL ("GFX: %3d %s", userToLog(userPos), Gfx.c_str());
// check the login & pass
if (reason.empty() && !stringIsStandard (Login))
{
// reject the new user, bad login format
reason = "Bad login format, only alphanumeric character";
Output.displayNL ("---: %3d Bad Login Format", userToLog(userPos));
}
if (reason.empty() && !stringIsStandard (Password))
{
// reject the new user, bad password format
reason = "Bad password format, only alphanumeric character";
Output.displayNL ("---: %3d Bad Password Format", userToLog(userPos));
}
if (reason.empty())
{
if (userPos == -1)
{
// unknown user
if (AcceptNewUser)
{
// add the new user
addUser (Login, Password);
// take the new user entry
userPos = findUser (Login);
Output.displayNL ("---: %3d New User (new id:%d)", -1, userToLog(userPos));
}
else
{
// reject the new user
reason = "Bad login";
Output.displayNL ("---: %3d Bad Login", userToLog(userPos));
}
}
else
{
// check id the account is active
if (!Users[userPos].Active)
{
reason = "Your account was disactivated";
Output.displayNL ("---: %3d Your account was disactivated", userToLog(userPos));
}
else if (!checkPassword (Password, Users[userPos].Password))
{
// error reason
reason = "Bad password";
Output.displayNL ("---: %3d Bad Password", userToLog(userPos));
}
else
{
Output.displayNL ("---: %3d Ok", userToLog(userPos));
}
}
}
if (reason.empty())
{
reason = Users[userPos].Authorize (from, netbase);
}
uint32 nbshard = 0;
if (reason.empty())
{
// count online shards
for (uint i = 0; i < Shards.size (); i++)
{
// add it only if the shard is on line and the user can go to this shard
if (Shards[i].Online && havePrivilege(Users[userPos].ShardPrivilege, Shards[i].ShardName))
{
nbshard++;
}
}
if (nbshard==0)
{
reason = "No shards available";
}
}
CMessage msgout (netbase.getSIDA (), "VLP");
if (reason.empty())
{
uint8 ok = 1;
msgout.serial (ok);
// send number of online shard
msgout.serial (nbshard);
// send address and name of all online shards
for (uint i = 0; i < Shards.size (); i++)
{
if (Shards[i].Online && havePrivilege (Users[userPos].ShardPrivilege, Shards[i].ShardName))
{
// serial the name of the shard
string shardname;
shardname = Shards[i].Name;
if (Shards[i].NbPlayers == 0)
{
shardname += " (no users)";
}
else
{
char num[1024];
smprintf(num, 1024, "%d", Shards[i].NbPlayers);
shardname += " (";
shardname += num;
if (Shards[i].NbPlayers == 1)
shardname += " user)";
else
shardname += " users)";
}
msgout.serial (shardname);
// serial the address of the WS service
msgout.serial (Shards[i].WSAddr);
}
}
netbase.send (msgout, from);
netbase.authorizeOnly ("CS", from);
}
else
{
// put the error message
uint8 ok = 0;
msgout.serial (ok);
msgout.serial (reason);
netbase.send (msgout, from);
// FIX: On linux, when we disconnect now, sometime the other side doesnt receive the message sent just before.
// So it's the other side to disconnect
// netbase.disconnect (from);
}
}
static void cbClientChooseShard (CMessage &msgin, TSockId from, CCallbackNetBase &netbase)
{
//
// S06: receive "CS" message from client
//
// first find if the user is authorized
for (vector<CUser>::iterator it = Users.begin (); it != Users.end (); it++)
{
if ((*it).Authorized && (*it).SockId == from)
{
// it's ok, so we found the wanted shard
string WSAddr;
msgin.serial (WSAddr);
for (sint32 i = 0; i < (sint32) Shards.size (); i++)
{
if (Shards[i].Online && Shards[i].WSAddr == WSAddr && havePrivilege ((*it).ShardPrivilege, Shards[i].ShardName))
{
CMessage msgout (CNetManager::getNetBase("WSLS")->getSIDA (), "CS");
const CInetAddress &ia = netbase.hostAddress ((*it).SockId);
msgout.serial ((*it).Cookie);
CNetManager::send("WSLS", msgout, Shards[i].SockId);
beep (1000, 1, 100, 100);
return;
}
}
// the shard is not available, denied the user
nlwarning("User try to choose a shard without authorization");
CMessage msgout (netbase.getSIDA (), "SCS");
uint8 ok = false;
string reason = "Selected shard is not available";
msgout.serial (ok);
msgout.serial (reason);
netbase.send (msgout, from);
// FIX: On linux, when we disconnect now, sometime the other side doesnt receive the message sent just before.
// So it's the other side to disconnect
// netbase.disconnect (from);
return;
}
}
// the user isn t authorized
nlwarning("User try to choose a shard without authorization");
// disconnect him
netbase.disconnect (from);
}
static void cbClientConnection (const string &serviceName, TSockId from, void *arg)
{
CCallbackNetBase *cnb = CNetManager::getNetBase("LS");
const CInetAddress &ia = cnb->hostAddress (from);
nldebug("new client connection: %s", ia.asString ().c_str ());
Output.displayNL ("CCC: Connection from %s", ia.asString ().c_str ());
if (ia.asString().find ("nevrax") != string::npos)
{
// internal connection
beep ();
}
else
{
// external connection
beep (1000, 2, 100, 100);
}
cnb->authorizeOnly ("VLP", from);
}
static void cbClientDisconnection (const string &serviceName, TSockId from, void *arg)
{
CCallbackNetBase *cnb = CNetManager::getNetBase("LS");
const CInetAddress &ia = cnb->hostAddress (from);
nldebug("new client disconnection: %s", ia.asString ().c_str ());
// remove the user if necessary
for (vector<CUser>::iterator it = Users.begin (); it != Users.end (); it++)
{
if ((*it).SockId == from)
{
if ((*it).State == CUser::Awaiting)
{
// the user is disconnected from me because he have to connect to the front end right now, so we wait...
}
else
{
// prematurated disconnection, clean everything
disconnectClient (*it, false, false);
}
(*it).SockId = NULL;
return;
}
}
}
const TCallbackItem ClientCallbackArray[] =
{
{ "VLP", cbClientVerifyLoginPassword },
{ "CS", cbClientChooseShard },
};
// if you add callback in the client side, don't forget to add it here!!!
static const char *OtherSideAssociations[] =
{
"AA",
"RA",
"RAA",
"VLP",
"SCS",
};
void connectionClientInit ()
{
CNetManager::addCallbackArray ("LS", ClientCallbackArray, sizeof(ClientCallbackArray)/sizeof(ClientCallbackArray[0]));
CNetManager::setConnectionCallback ("LS", cbClientConnection, NULL);
CNetManager::setDisconnectionCallback ("LS", cbClientDisconnection, NULL);
CNetManager::getNetBase("LS")->setOtherSideAssociations(OtherSideAssociations, sizeof(OtherSideAssociations)/sizeof(OtherSideAssociations[0]));
}
</PRE>
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