Team Fortress 2 Source Code as on 22/4/2020
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#ifdef _WIN32
#if !defined( _X360 )
#include <windows.h>
#endif
#elif defined(POSIX)
#include <sys/socket.h>
#include <netinet/in.h>
#include <pwd.h>
#include <sys/types.h>
#else
#error
#endif
#include "host.h"
#include "quakedef.h"
#include "net.h"
#include "bitbuf.h"
#include "tier0/icommandline.h"
#include "cserserverprotocol_engine.h"
#include "host_phonehome.h"
#include "mathlib/IceKey.H"
#include "tier0/vcrmode.h"
#include "blockingudpsocket.h"
#if defined( _X360 )
#include "xbox/xbox_win32stubs.h"
#endif
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
#define PHONE_HOME_TIMEOUT 1.5f
#define PHONE_HOME_RETRIES 3
//-----------------------------------------------------------------------------
// Purpose: returns a pointer to a function, given a module
// Input : pModuleName - module name
// *pName - proc name
//-----------------------------------------------------------------------------
static char const *g_pszExitMsg = "Renderer: Out of memory, message code %i";
class CPhoneHome : public IPhoneHome
{
public:
CPhoneHome() :
m_bPhoneHome( false ),
m_uSessionID( 0 ),
m_pSocket( 0 )
{
Q_memset( &m_cserIP, 0, sizeof( m_cserIP ) );
Q_memset( m_szBuildIdentifier, 0, sizeof( m_szBuildIdentifier ) );
}
virtual void Shutdown()
{
delete m_pSocket;
m_pSocket = NULL;
}
virtual void Init()
{
char build_identifier[ 32 ];
Q_strncpy( build_identifier, "VLV_INTERNAL ", sizeof( build_identifier ) );
int iBI = CommandLine()->FindParm("-bi");
if ( iBI > 0 )
{
if ( (iBI+1) < CommandLine()->ParmCount() )
{
char const *pBuildParam = CommandLine()->GetParm( iBI + 1 );
Q_memset( build_identifier, 0, sizeof( build_identifier ) );
Q_strncpy( build_identifier, pBuildParam, sizeof( build_identifier ) );
}
else
{
build_identifier[ 0 ] = '!';
}
}
if ( Q_strlen( build_identifier ) >= 1 &&
Q_strnicmp( build_identifier, "VLV_INTERNAL", Q_strlen( "VLV_INTERNAL" ) ) )
{
// Strip trailing spaces from identifer
char *identifer = &build_identifier[ Q_strlen( build_identifier ) - 1 ];
while ( identifer > build_identifier && *identifer == ' ' )
{
*identifer-- = 0;
}
// FIXME: Don't hardcode CSER ip, get from Steam!!!
if ( NET_StringToAdr( "207.173.177.12:27013", &m_cserIP ) )
{
m_bPhoneHome = true;
Q_strncpy( m_szBuildIdentifier, build_identifier, sizeof( m_szBuildIdentifier ) );
m_pSocket = new CBlockingUDPSocket();
}
}
}
virtual void Message( byte msgtype, char const *mapname )
{
if ( !m_bPhoneHome )
return;
if ( !m_pSocket )
return;
switch ( msgtype )
{
default:
break;
case PHONE_MSG_ENGINESTART:
if ( !RequestSessionId( m_uSessionID ) )
{
ExitApp();
}
// Note we always return here!!!
return;
case PHONE_MSG_ENGINEEND:
break;
case PHONE_MSG_MAPSTART:
{
if ( m_bLevelStarted )
{
return;
}
m_bLevelStarted = true;
// Tracker 22394: Don't send map start/finish when building reslists...
if ( CommandLine()->FindParm( "-makereslists" ) )
{
return;
}
}
break;
case PHONE_MSG_MAPEND:
{
if ( !m_bLevelStarted )
{
return;
}
m_bLevelStarted = false;
// Tracker 22394: Don't send map start/finish when building reslists...
if ( CommandLine()->FindParm( "-makereslists" ) )
{
return;
}
}
break;
}
SendSessionMessage( msgtype, mapname );
}
private:
void ExitApp()
{
byte msgtype = 212;
Error( g_pszExitMsg, msgtype );
}
//-----------------------------------------------------------------------------
// Purpose: encrypts an 8-byte sequence
//-----------------------------------------------------------------------------
inline void Encrypt8ByteSequence( IceKey& cipher, const unsigned char *plainText, unsigned char *cipherText)
{
cipher.encrypt(plainText, cipherText);
}
//-----------------------------------------------------------------------------
// Purpose:
//-----------------------------------------------------------------------------
void EncryptBuffer( IceKey& cipher, unsigned char *bufData, uint bufferSize)
{
unsigned char *cipherText = bufData;
unsigned char *plainText = bufData;
uint bytesEncrypted = 0;
while (bytesEncrypted < bufferSize)
{
// encrypt 8 byte section
Encrypt8ByteSequence( cipher, plainText, cipherText);
bytesEncrypted += 8;
cipherText += 8;
plainText += 8;
}
}
void BuildMessage( bf_write& buf, byte msgtype, char const *mapname, unsigned int uSessionID )
{
bf_write encrypted;
ALIGN4 byte encrypted_data[ 2048 ] ALIGN4_POST;
buf.WriteByte( C2M_PHONEHOME );
buf.WriteByte( '\n' );
buf.WriteByte( C2M_PHONEHOME_PROTOCOL_VERSION );
buf.WriteLong( uSessionID ); // sessionid (request new id by sending 0)
// encryption object
IceKey cipher(1); /* medium encryption level */
unsigned char ucEncryptionKey[8] = { 191, 1, 0, 222, 85, 39, 154, 1 };
cipher.set( ucEncryptionKey );
encrypted.StartWriting( encrypted_data, sizeof( encrypted_data ) );
byte corruption_identifier = 0x01;
encrypted.WriteByte( corruption_identifier );
// Data version protocol
encrypted.WriteByte( 1 );
// Write the "build identifier" -- unique to each person we give a build to.
encrypted.WriteString( m_szBuildIdentifier );
{
char computername[ 64 ];
Q_memset( computername, 0, sizeof( computername ) );
#if defined ( _WIN32 )
DWORD length = sizeof( computername ) - 1;
if ( !GetComputerName( computername, &length ) )
{
Q_strncpy( computername, "???", sizeof( computername ) );
}
#else
if ( gethostname( computername, sizeof(computername) ) == -1 )
{
Q_strncpy( computername, "Linux????", sizeof( computername ) );
}
computername[sizeof(computername)-1] = '\0';
#endif
encrypted.WriteString( computername );
}
{
char username[ 64 ];
Q_memset( username, 0, sizeof( username ) );
#if defined ( _WIN32 )
DWORD length = sizeof( username ) - 1;
if ( !GetUserName( username, &length ) )
{
Q_strncpy( username, "???", sizeof( username ) );
}
#else
struct passwd *pass = getpwuid( getuid() );
if ( pass )
{
Q_strncpy( username, pass->pw_name, sizeof( username ) );
}
else
{
Q_strncpy( username, "LinuxUser??", sizeof( username ) );
}
username[sizeof(username)-1] = '\0';
#endif
encrypted.WriteString( username );
}
char gamedir[ 64 ];
Q_FileBase( com_gamedir, gamedir, sizeof( gamedir ) );
encrypted.WriteString( gamedir );
unsigned int uBuildNumber = build_number();
encrypted.WriteLong( (int)uBuildNumber );
// WRite timestamp of engine
encrypted.WriteFloat( (float)realtime );
encrypted.WriteByte( msgtype );
if ( mapname != NULL )
{
encrypted.WriteString( mapname );
}
int isDebugUser = ( Sys_IsDebuggerPresent() || CommandLine()->FindParm( "-allowdebug" ) ) ? 1 : 0;
encrypted.WriteByte( isDebugUser );
while ( encrypted.GetNumBytesWritten() % 8 )
{
encrypted.WriteByte( 0 );
}
EncryptBuffer( cipher, (unsigned char *)encrypted.GetData(), encrypted.GetNumBytesWritten() );
buf.WriteShort( (int)encrypted.GetNumBytesWritten() );
buf.WriteBytes( (unsigned char *)encrypted.GetData(), encrypted.GetNumBytesWritten() );
}
void SendSessionMessage( byte msgtype, char const *mapname )
{
if ( m_uSessionID == 0 )
return;
bf_write buf;
ALIGN4 byte data[ 2048 ] ALIGN4_POST;
buf.StartWriting( data, sizeof( data ) );
BuildMessage( buf, msgtype, mapname, m_uSessionID );
struct sockaddr_in sa;
m_cserIP.ToSockadr( (struct sockaddr *)&sa );
m_pSocket->SendSocketMessage( sa, (const byte *)buf.GetData(), buf.GetNumBytesWritten() );
// If we already have a sessionid, don't wait for the server to give us back a new one...
if ( m_uSessionID != 0 )
{
return;
}
if ( m_pSocket->WaitForMessage( PHONE_HOME_TIMEOUT ) )
{
ALIGN4 byte readbuf[ 128 ] ALIGN4_POST;
bf_read replybuf( readbuf, sizeof( readbuf ) );
struct sockaddr_in replyaddress;
uint bytesReceived = m_pSocket->ReceiveSocketMessage( &replyaddress, (byte *)readbuf, sizeof( readbuf ) );
if ( bytesReceived > 0 )
{
// Fixup actual size
replybuf.StartReading( readbuf, bytesReceived );
// Parse out data
byte responseType = (byte)replybuf.ReadByte();
if ( M2C_ACKPHONEHOME == responseType )
{
bool allowPlay = replybuf.ReadByte() == 1 ? true : false;
if ( allowPlay )
{
m_uSessionID = replybuf.ReadLong();
}
}
}
}
}
bool RequestSessionId( unsigned int& id )
{
id = 0u;
bf_write buf;
ALIGN4 byte data[ 2048 ] ALIGN4_POST;
buf.StartWriting( data, sizeof( data ) );
BuildMessage( buf, PHONE_MSG_ENGINESTART, NULL, id );
struct sockaddr_in sa;
m_cserIP.ToSockadr( (struct sockaddr *)&sa );
for ( int retries = 0; retries < PHONE_HOME_RETRIES; ++retries )
{
m_pSocket->SendSocketMessage( sa, (const byte *)buf.GetData(), buf.GetNumBytesWritten() ); //lint !e534
if ( m_pSocket->WaitForMessage( PHONE_HOME_TIMEOUT ) )
{
ALIGN4 byte readbuf[ 128 ] ALIGN4_POST;
bf_read replybuf( readbuf, sizeof( readbuf ) );
struct sockaddr_in replyaddress;
uint bytesReceived = m_pSocket->ReceiveSocketMessage( &replyaddress, (byte *)readbuf, sizeof( readbuf ) );
if ( bytesReceived > 0 )
{
// Fixup actual size
replybuf.StartReading( readbuf, bytesReceived );
// Parse out data
byte responseType = (byte)replybuf.ReadByte();
if ( M2C_ACKPHONEHOME == responseType )
{
bool allowPlay = replybuf.ReadByte() == 1 ? true : false;
if ( allowPlay )
{
id = replybuf.ReadLong();
return true;
}
}
break;
}
}
}
return false;
}
// FIXME, this is BS
bool IsExternalBuild()
{
if ( CommandLine()->FindParm( "-publicbuild" ) )
{
return true;
}
if ( !CommandLine()->FindParm( "-internalbuild" ) &&
!CommandLine()->CheckParm("-dev") )
{
return true;
}
// It's an external build...
if ( m_bPhoneHome )
{
if ( !Q_stricmp( m_szBuildIdentifier, "beta-playtest" ) )
{
// Still internal
return false;
}
return true;
}
return false;
}
bool m_bPhoneHome;
netadr_t m_cserIP;
char m_szBuildIdentifier[ 32 ];
bool m_bLevelStarted;
unsigned int m_uSessionID;
CBlockingUDPSocket *m_pSocket;
};
CPhoneHome g_PhoneHome;
IPhoneHome *phonehome = &g_PhoneHome;