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/*
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* Copyright (C) 2008-2009 Trinity <http://www.trinitycore.org/>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/** \file
\ingroup Trinityd
*/
#include "Common.h"
#include "Config/ConfigEnv.h"
#include "Database/DatabaseEnv.h"
#include "AccountMgr.h"
#include "Log.h"
#include "RASocket.h"
#include "Util.h"
#include "World.h"
/// \todo Make this thread safe if in the future 2 admins should be able to log at the same time.
SOCKET r;
#define dropclient {Sendf("I'm busy right now, come back later."); \
SetCloseAndDelete(); \
return; \
}
uint32 iSession=0; ///< Session number (incremented each time a new connection is made)
unsigned int iUsers=0; ///< Number of active administrators
typedef int(* pPrintf)(const char*,...);
void ParseCommand(CliCommandHolder::Print*, char*command);
/// RASocket constructor
RASocket::RASocket(ISocketHandler &h): TcpSocket(h)
{
///- Increment the session number
iSess =iSession++ ;
///- Get the config parameters
bSecure = sConfig.GetBoolDefault( "RA.Secure", true );
iMinLevel = sConfig.GetIntDefault( "RA.MinLevel", 3 );
///- Initialize buffer and data
iInputLength=0;
buff=new char[RA_BUFF_SIZE];
stage=NONE;
}
/// RASocket destructor
RASocket::~RASocket()
{
///- Delete buffer and decrease active admins count
delete [] buff;
sLog.outRemote("Connection was closed.\n");
if(stage==OK)
iUsers--;
}
/// Accept an incoming connection
void RASocket::OnAccept()
{
std::string ss=GetRemoteAddress();
sLog.outRemote("Incoming connection from %s.\n",ss.c_str());
///- If there is already an active admin, drop the connection
if(iUsers)
dropclient
///- Else print Motd
Sendf("%s\r\n",sWorld.GetMotd());
}
/// Read data from the network
void RASocket::OnRead()
{
///- Read data and check input length
TcpSocket::OnRead();
unsigned int sz=ibuf.GetLength();
if(iInputLength+sz>=RA_BUFF_SIZE)
{
sLog.outRemote("Input buffer overflow, possible DOS attack.\n");
SetCloseAndDelete();
return;
}
///- If there is already an active admin (other than you), drop the connection
if(stage!=OK && iUsers)
dropclient
char *inp = new char [sz+1];
ibuf.Read(inp,sz);
/// \todo Can somebody explain this 'Linux bugfix'?
if(stage==NONE)
if(sz>4) //linux remote telnet
if(memcmp(inp ,"USER ",5))
{
delete [] inp;return;
printf("lin bugfix");
} //linux bugfix
///- Discard data after line break or line feed
bool gotenter=false;
unsigned int y=0;
for (; y<sz; y++)
if(inp[y]=='\r'||inp[y]=='\n')
{
gotenter=true;
break;
}
//No buffer overflow (checked above)
memcpy(&buff[iInputLength],inp,y);
iInputLength+=y;
delete [] inp;
if(gotenter)
{
buff[iInputLength]=0;
iInputLength=0;
switch(stage)
{
/// <ul> <li> If the input is 'USER <username>'
case NONE:
if(!memcmp(buff,"USER ",5)) //got "USER" cmd
{
szLogin=&buff[5];
///- Get the password from the account table
std::string login = szLogin;
///- Convert Account name to Upper Format
AccountMgr::normalizeString(login);
///- Escape the Login to allow quotes in names
loginDatabase.escape_string(login);
QueryResult* result = loginDatabase.PQuery("SELECT aa.gmlevel FROM account_access aa, account a WHERE a.username = '%s' AND aa.id = a.id",login.c_str());
///- If the user is not found, deny access
if(!result)
{
Sendf("-No such user.\r\n");
sLog.outRemote("User %s does not exist.\n",szLogin.c_str());
if(bSecure)SetCloseAndDelete();
}
else
{
Field *fields = result->Fetch();
//szPass=fields[0].GetString();
///- if gmlevel is too low, deny access
if(fields[0].GetUInt32()<iMinLevel)
{
Sendf("-Not enough privileges.\r\n");
sLog.outRemote("User %s has no privilege.\n",szLogin.c_str());
if(bSecure)SetCloseAndDelete();
} else
{
stage=LG;
}
delete result;
}
}
break;
///<li> If the input is 'PASS <password>' (and the user already gave his username)
case LG:
if(!memcmp(buff,"PASS ",5)) //got "PASS" cmd
{ //login+pass ok
///- If password is correct, increment the number of active administrators
std::string login = szLogin;
std::string pw = &buff[5];
AccountMgr::normalizeString(login);
AccountMgr::normalizeString(pw);
loginDatabase.escape_string(login);
loginDatabase.escape_string(pw);
QueryResult *check = loginDatabase.PQuery(
"SELECT 1 FROM account WHERE username = '%s' AND sha_pass_hash=SHA1(CONCAT('%s',':','%s'))",
login.c_str(), login.c_str(), pw.c_str());
if(check)
{
delete check;
r=GetSocket();
stage=OK;
++iUsers;
Sendf("+Logged in.\r\n");
sLog.outRemote("User %s has logged in.\n",szLogin.c_str());
Sendf("TC>");
}
else
{
///- Else deny access
Sendf("-Wrong pass.\r\n");
sLog.outRemote("User %s has failed to log in.\n",szLogin.c_str());
if(bSecure)SetCloseAndDelete();
}
}
break;
///<li> If user is logged, parse and execute the command
case OK:
if(strlen(buff))
{
sLog.outRemote("Got '%s' cmd.\n",buff);
sWorld.QueueCliCommand(&RASocket::zprint , buff);
}
else
Sendf("TC>");
break;
///</ul>
};
}
}
/// Output function
void RASocket::zprint( const char * szText )
{
if( !szText )
return;
#ifdef RA_CRYPT
char *megabuffer=strdup(szText);
unsigned int sz=strlen(megabuffer);
Encrypt(megabuffer,sz);
send(r,megabuffer,sz,0);
delete [] megabuffer;
#else
unsigned int sz=strlen(szText);
send(r,szText,sz,0);
#endif
}
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