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/*
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Rose Online Server Emulator
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Copyright (C) 2006,2007 OSRose Team http://osroseon.to.md
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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developed with Main erose/hrose source server + some change from the original eich source
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*/
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#include "sockets.h"
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#include "seh.hpp"
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#include "config.h"
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// Constructor
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CClientSocket::CClientSocket( )
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{
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PacketSize = 6; // Starting size
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PacketOffset = 0; // No bytes read, yet.
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}
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// Destructor
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CClientSocket::~CClientSocket( )
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{
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}
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// Receive this client's socket
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bool CClientSocket::ReceiveData( )
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{
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int ReceivedBytes;
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short BytesToRead;
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// Calculate bytes to read to get the full packet
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BytesToRead = PacketSize - PacketOffset;
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// This should never happen, but it is integrated:
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if ( BytesToRead > 0x400 - PacketOffset ) return false;
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if ( BytesToRead == 0 ) return false;
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// Receive data from client
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ReceivedBytes = recv( sock, (char*)&Buffer[ PacketOffset ], BytesToRead, 0 );
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if ( ReceivedBytes <= 0 ) return false;
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// Update pointer
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PacketOffset += ReceivedBytes;
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// If the packet is not complete, leave the function
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if ( ReceivedBytes != BytesToRead ) return true;
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if ( PacketSize == 6 )
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{
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// We received the headerblock
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#ifndef USE124
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PacketSize = DecryptBufferHeader( &CryptStatus, CryptTable, Buffer );
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#else
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CPacket* header = (CPacket*)&Buffer;
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PacketSize = header->Size;
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#endif
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// Did we receive an incorrect buffer?
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if ( PacketSize < 6 )
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{
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Log(MSG_ERROR, "(SID:%i) Client sent incorrect blockheader.", sock );
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return false;
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}
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// Is the packet larger than just the header, then continue receiving
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if ( PacketSize > 6 ) return true;
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}
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#ifndef USE124
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// We received the whole packet - Now we try to decrypt it
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if ( !DecryptBufferData( CryptTable, Buffer ) )
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{
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Log(MSG_ERROR, "(SID:%i) Client sent illegal block.", sock );
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return false;
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}
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#else
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cryptPacket( (char*)Buffer, this->ct);
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#endif
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CPacket* pak = (CPacket*)&Buffer;
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//comment to prevent packet logging
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FILE *fh = NULL;
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fopen_s (&fh, "log/inoutpackets.log", "a+");
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if ( fh != NULL ) {
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fprintf( fh, "(SID:%08u) IN %04x: ", sock, pak->Command );
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for ( int i=0; i<pak->Size-6; ++i ) fprintf( fh, "%02x ", (unsigned char)pak->Buffer[i] );
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fprintf( fh, "\n" );
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fclose( fh );
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}
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// Handle actions for this packet
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if ( !GS->OnReceivePacket( this, pak ) )
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{
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//Log(MSG_ERROR, "onrecieve packet returned false");
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return false;
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}
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// Reset values for the next packet
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PacketSize = 6;
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PacketOffset = 0;
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//Log(MSG_DEBUG, "onrecieve packet returned true");
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return true;
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}
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// Send a packet to this client
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void CClientSocket::SendPacket( CPacket *P )
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{
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//first log it so we don't have to worry about encryption. Comment to prevent logging
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bool LogFile = true;
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FILE *fh = NULL;
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fopen_s (&fh, "log/receivedpackets.log", "a+");
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if ( fh != NULL && LogFile)
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{
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fprintf( fh, "(SID:%08u) OUT %04x: ", sock, P->Command );
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for ( int i=0; i<P->Size-6; ++i ) fprintf( fh, "%02x ", (unsigned char)P->Buffer[i] );
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fprintf( fh, "\n" );
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fclose( fh );
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}
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// :WARNING: IF WE ADD A CRYPT FUNCTION HERE WE MUST COPY THE
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// PACKET AND NOT USE THE ORIGINAL, IT WILL FUCK UP
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// THE SENDTOALL FUNCTIONS
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unsigned char* Buffer2 = (unsigned char*)P;
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unsigned Size = P->Size;
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#ifndef USE124
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if(this == NULL)
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{
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Log(MSG_WARNING,"tried to send a packet to a socket that doesn't exist any more");
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return;
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}
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//__seh_try
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//{
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// EncryptBuffer( CryptTable, Buffer );
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//}
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//__seh_except(info, context)
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//{
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// Log(MSG_WARNING,"Caught a bad packet %s. Send cancelled", Buffer);
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// return;
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//}
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//__seh_end
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EncryptBuffer( CryptTable, Buffer2 );
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#endif
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send( sock, (char*)Buffer2, Size, 0 );
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//record teh packet that we just sent
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//CPacket* pak = (CPacket*)&Buffer;
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}
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//-------------------------------------------------------------------------
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// Send a packet to a client without encrypting the source packet
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//-------------------------------------------------------------------------
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void CClientSocket::SendPacketCpy( CPacket *P )
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{
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CPacket NewPacket;
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memcpy( &NewPacket, P, sizeof( CPacket ) );
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SendPacket( &NewPacket );
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}
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// Handle client socket (threads)
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PVOID ClientMainThread( PVOID ClientSocket )
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{
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CClientSocket* thisplayer = (CClientSocket*) ClientSocket;
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fd_set fds;
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while(thisplayer->isActive)
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{
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FD_ZERO(&fds);
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FD_SET (thisplayer->sock, &fds);
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int Select = select( thisplayer->sock+1, &fds, NULL, NULL, NULL );
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if(Select == SOCKET_ERROR)
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{
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Log( MSG_ERROR,NULL,"Error in Select");
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thisplayer->isActive = false;
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}
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else
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{
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if(FD_ISSET( thisplayer->sock, &fds ))
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{
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if (thisplayer->isserver == true)
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{
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//Log( MSG_INFO,"ISC PACKET in ClientMainThread");
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thisplayer->ISCThread();
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}
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else
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if(!thisplayer->ReceiveData( ))
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{
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thisplayer->isActive = false;
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}
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}
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}
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}
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thisplayer->GS->DisconnectClient( thisplayer );
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pthread_exit(NULL);
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return 0 ;
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}
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// -----------------------------------------------------------------------------------------
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