d4708
/
source-engine
mirror of https://github.com/nillerusr/source-engine.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
506 Commits
25 Branches
6 Tags
221 MiB
Tree: 79c3bc86bd
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '79c3bc86bd'
${ noResults }
source-engine/public/gcsdk/msgbase.h

871 lines
27 KiB
Raw Normal View History Unescape

1
5 years ago
//====== Copyright <EFBFBD>, Valve Corporation, All rights reserved. =======
//
// Purpose: Holds the CMsgBase_t class
//
//=============================================================================
#ifndef GCMSGBASE_H
#define GCMSGBASE_H
#ifdef _WIN32
#pragma once
#endif
#include "tier1/tsmultimempool.h"
#include "gclogger.h"
#include "gcconstants.h"
#include "refcount.h"
namespace GCSDK
{
class CNetPacket;
// used for message types in GCSDK where we don't have the actual enum
typedef uint32 MsgType_t;
const uint32 k_EMsgProtoBufFlag = 0x80000000;
//extern ConVar g_ConVarMsgErrorDump;
extern CThreadSafeMultiMemoryPool g_MemPoolMsg;
enum EMsgFormatType
{
k_EMsgFormatTypeStruct = 0,
k_EMsgFormatTypeClientStruct = 1,
k_EMsgFormatTypeClientStructDeprecated = 2,
k_EMsgFormatTypeProtocolBuffer = 3
};
//
// Interface that the CNetPacket wrappers for both old/new inter-server
// message formats must implement.
//
class IMsgNetPacket : public CRefCount
{
public:
virtual EMsgFormatType GetEMsgFormatType() const = 0;
virtual CNetPacket *GetCNetPacket() const = 0;
virtual uint8 *PubData() const = 0;
virtual uint CubData() const = 0;
//
// Inter-server or client messages in both old/new formats
//
virtual MsgType_t GetEMsg() const = 0;
virtual JobID_t GetSourceJobID() const = 0;
virtual JobID_t GetTargetJobID() const = 0;
virtual void SetTargetJobID( JobID_t ulJobID ) = 0;
//
// Client messages only in the old format, optional in any msg in the new format
//
virtual CSteamID GetSteamID() const = 0;
virtual void SetSteamID( CSteamID steamID ) = 0;
// Inter-gc messages only
virtual AppId_t GetSourceAppID() const = 0;
virtual void SetSourceAppID( AppId_t appId ) = 0;
//
// The name of the job type to route this message to. ProtoBuf messages only
//
virtual bool BHasTargetJobName() const = 0;
virtual const char *GetTargetJobName() const = 0;
protected:
// Needed due to CRefCount inheritance which makes this not a pure interface class
virtual ~IMsgNetPacket() {}
};
IMsgNetPacket *IMsgNetPacketFromCNetPacket( CNetPacket *pNetPacket );
// Wrapper around IMsgNetPacket which auto-releases
class CIMsgNetPacketAutoRelease
{
public:
CIMsgNetPacketAutoRelease( CNetPacket *pNetPacket ) { m_pMsgNetPacket = IMsgNetPacketFromCNetPacket( pNetPacket ); }
~CIMsgNetPacketAutoRelease() { SAFE_RELEASE( m_pMsgNetPacket ); }
void Replace( CNetPacket *pNetPacket, bool bIsClientMsg ) { SAFE_RELEASE( m_pMsgNetPacket ); m_pMsgNetPacket = IMsgNetPacketFromCNetPacket( pNetPacket ); }
IMsgNetPacket *Get() { return m_pMsgNetPacket; }
IMsgNetPacket *operator->() { return m_pMsgNetPacket; }
protected:
void operator=( const CIMsgNetPacketAutoRelease &that ) { AssertMsg( false, "Not safe to copy since releases references on destruction" ); }
CIMsgNetPacketAutoRelease( const CIMsgNetPacketAutoRelease &that ) { AssertMsg( false, "Not safe to copy since releases references on destruction" ); }
IMsgNetPacket *m_pMsgNetPacket;
};
//-----------------------------------------------------------------------------
// Purpose: Helper class for incoming and outgoing network packets.
// IMPORTANT: Note the distinction between pubData and cubData
// (which refer to the message payload), and pubMsg and cubMsg
// (which refer to the entire message, with the header).
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
class CMsgBase_t
{
public:
// Send constructor
CMsgBase_t( uint32 cubStruct, uint32 cubReserve = 0 );
// copies data from pubPkt
CMsgBase_t( const uint8 *pubPkt, uint32 cubPkt );
// Receive constructor - aliases pubPkt
CMsgBase_t( uint32 cubHdr, uint32 cubStruct, uint8 *pubPkt, uint32 cubPkt/*, HCONNECTION hConnection = NULL*/ );
// set packet after using empty constructor
void SetPacket( IMsgNetPacket *pNetPacket );
// Destructor
virtual ~CMsgBase_t();
// Accessors
uint8 *PubVarData() { return ( m_pubPkt + m_cubMsgHdr + m_cubStruct ); }
const uint8 *PubVarData() const { return ( m_pubPkt + m_cubMsgHdr + m_cubStruct ); }
uint32 CubVarData() const
{
if ( m_cubPkt >= ( m_cubMsgHdr + m_cubStruct ) )
return m_cubPkt - m_cubMsgHdr - m_cubStruct;
else
return 0;
}
uint8 *PubPkt() { return m_pubPkt; }
const uint8 *PubPkt() const { return m_pubPkt; }
uint32 CubPkt() const { return m_cubPkt; }
MSG_HEADER_TYPE &Hdr() { return * ( MSG_HEADER_TYPE * ) ( m_pubPkt ); }
const MSG_HEADER_TYPE &Hdr() const { return * ( MSG_HEADER_TYPE * ) ( m_pubPkt ); }
uint32 CubHdr() const { return m_cubMsgHdr; }
uint8* PubBody() { return m_pubBody; }
const uint8* PubBody() const { return m_pubBody; }
uint32 CubBody() const { return CubPkt() - CubHdr(); }
// Add additional data
int DubWriteCur() { return m_cubPkt - m_cubMsgHdr - m_cubStruct; } // Our current offset within the var data block
void AddBoolData( bool bData );
void AddUint8Data( uint8 ubData );
void AddUintData( uint32 unData );
void AddIntData( int32 nData );
void AddInt16Data( int16 sData );
void AddUint16Data( uint16 usData );
void AddUint64Data( uint64 ulData );
void AddInt64Data( int64 lData );
void AddFloatData( float lData );
void AddVariableLenData( const void *pvData, uint cubLen );
void AddStrData( const char *pchIn );
template<typename T> void AddStructure(T& structure ) ;
// Read variable-length data (can also read manually using PubVarData(), CubVarData()
void ResetReadPtr() { m_pubVarRead = PubVarData(); }
uint8 *PubReadCur() { return m_pubVarRead; }
const uint8 *PubReadCur() const { return m_pubVarRead; }
uint32 CubReadRemaining() const { return (uint32)(m_pubPkt + m_cubPkt - m_pubVarRead); }
void AdvanceReadPtr( int cubSkip ) { m_pubVarRead += cubSkip; }
bool BReadBoolData( bool *pbData );
bool BReadUint8Data( uint8 *pbData );
bool BReadUintData( uint32 *punData );
bool BReadIntData( int32 *pnData );
bool BReadInt16Data( int16 *psData );
bool BReadUint16Data( uint16 *pusData );
bool BReadUint64Data( uint64 *pulData );
bool BReadInt64Data( int64 *plData );
bool BReadFloatData( float *pflData );
bool BReadVariableLenData( void *pvBuff, uint32 cubRead );
bool BReadStr( char *pchBuff, int cchBuff );
bool BReadStr( CUtlString *pstr );
template<typename T> bool BReadStructure(T& structure) ;
// returns pointer to data (and size of data in out ptr), and NULLs out own pointer;
// caller now owns this memory and must free
uint8 * DetachPkt( int * pcubPkt )
{
Assert( pcubPkt );
*pcubPkt = m_cubPkt;
uint8 * pRetVal = m_pubPkt;
m_pubPkt = NULL;
m_pubBody = NULL;
m_cubPkt = 0;
return pRetVal;
}
void ResetWritePtr()
{
m_cubPkt = m_cubMsgHdr + m_cubStruct;
}
uint32 GetWriteOffset() const { return m_cubPkt; }
void SetWriteOffset( uint32 nWriteOffset ) { m_cubPkt = nWriteOffset; }
// Called to set the JobID that will be expecting
// a reply to this message.
void ExpectingReply( JobID_t jobIDSource )
{
Hdr().m_JobIDSource = jobIDSource;
}
bool BIsExpectingReply() const { return Hdr().m_JobIDSource != k_GIDNil; }
// make sure the buffer can hold this extra amount of data
void EnsurePacketSize( uint32 cubNewsize );
//HCONNECTION GetHConnection() const { return m_hConnection; }
void ReportBufferOverflow();
void PacketDump(); // spews complete packet content to console
protected:
// Shared by send & receive
uint8 *m_pubPkt; // Raw packet data
uint8 *m_pubBody; // pointer to body; always equal to m_pubPkt + m_cubMsgHdr
uint32 m_cubPkt; // Raw packet size
const uint32 m_cubMsgHdr; // Size of our message header
uint32 m_cubStruct; // Size of our message-specific struct
//HCONNECTION m_hConnection; // Connection on which we received the message
private:
// stop people from hurting themselves
CMsgBase_t( const CMsgBase_t &rhs ) {};
CMsgBase_t &operator=( const CMsgBase_t &rhs ) {};
bool m_bAlloced; // Did we allocate this buffer or does someone else own it
// Receive only
uint8 *m_pubVarRead; // Our current read pointer in the variable-length data
};
template <typename MSG_HEADER_TYPE>
CMsgBase_t<MSG_HEADER_TYPE>::CMsgBase_t( uint32 cubStruct, uint32 cubReserve )
: m_cubMsgHdr( sizeof( MSG_HEADER_TYPE ) )
{
m_cubStruct = cubStruct;
// Alloc a buffer
m_cubPkt = m_cubMsgHdr + m_cubStruct;
m_pubPkt = (uint8 *) g_MemPoolMsg.Alloc( m_cubPkt + cubReserve );
m_pubBody = m_pubPkt + m_cubMsgHdr;
memset(m_pubPkt, 0, m_cubPkt );
m_bAlloced = true;
m_pubVarRead = NULL;
}
template <typename MSG_HEADER_TYPE>
CMsgBase_t<MSG_HEADER_TYPE>::CMsgBase_t( const uint8 *pubPkt, uint32 cubPkt )
: m_cubMsgHdr( 0 )
{
m_cubStruct = 0;
// Alloc a buffer
m_cubPkt = cubPkt;
m_pubPkt = (uint8 *) g_MemPoolMsg.Alloc( m_cubPkt );
m_pubBody = m_pubPkt + m_cubMsgHdr;
Q_memcpy(m_pubPkt, pubPkt, cubPkt );
m_bAlloced = true;
m_pubVarRead = NULL;
}
template <typename MSG_HEADER_TYPE>
CMsgBase_t<MSG_HEADER_TYPE>::CMsgBase_t( uint32 cubHdr, uint32 cubStruct, uint8 *pubPkt, uint32 cubPkt )
: m_cubMsgHdr( cubHdr )
{
Assert( cubHdr != 0 );
Assert( !cubPkt || ( cubPkt >= ( cubHdr + cubStruct ) ) );
m_cubStruct = cubStruct;
m_pubPkt = pubPkt;
m_pubBody = m_pubPkt + m_cubMsgHdr;
m_cubPkt = cubPkt;
m_bAlloced = false;
m_pubVarRead = PubVarData();
}
template <typename MSG_HEADER_TYPE>
CMsgBase_t<MSG_HEADER_TYPE>::~CMsgBase_t()
{
// if we allocated memory, free it
if ( m_bAlloced && m_pubPkt )
g_MemPoolMsg.Free( m_pubPkt );
}
//-----------------------------------------------------------------------------
// Purpose: ensure the packet can contain at least this much extra data
// Input: cubExtraSize - the amount of bytes to have room for
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::SetPacket( IMsgNetPacket *pNetPacket )
{
m_pubPkt = pNetPacket->PubData();
m_pubBody = m_pubPkt + m_cubMsgHdr;
m_cubPkt = pNetPacket->CubData();
Assert( !m_cubPkt || ( m_cubPkt >= ( m_cubMsgHdr + m_cubStruct ) ) );
m_bAlloced = false;
m_pubVarRead = PubVarData();
}
//-----------------------------------------------------------------------------
// Purpose: ensure the packet can contain at least this much extra data
// Input: cubExtraSize - the amount of bytes to have room for
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::EnsurePacketSize( uint32 cubExtraSize )
{
m_pubPkt = (uint8 *) g_MemPoolMsg.ReAlloc( m_pubPkt, m_cubPkt + cubExtraSize );
m_pubBody = m_pubPkt + m_cubMsgHdr;
}
//-----------------------------------------------------------------------------
// Purpose: Appends a bool to the variable length data associated with this message
// Input: bData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddBoolData( bool ubData )
{
return AddUint8Data( static_cast< uint8 >( ubData ) );
}
//-----------------------------------------------------------------------------
// Purpose: Appends a uint8 to the variable length data associated with this message
// Input: ubData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddUint8Data( uint8 ubData )
{
EnsurePacketSize( sizeof( uint8 ) );
*( ( uint8 * ) ( m_pubPkt + m_cubPkt ) ) = ubData;
m_cubPkt += sizeof( uint8 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends a uint to the variable length data associated with this message
// Input: unData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddUintData( uint32 unData )
{
EnsurePacketSize( sizeof( uint32 ) );
*( ( uint32 * ) ( m_pubPkt + m_cubPkt ) ) = unData;
m_cubPkt += sizeof( uint32 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends an int to the variable length data associated with this message
// Input: nData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddIntData( int32 nData )
{
EnsurePacketSize( sizeof( int32 ) );
*( ( int32 * ) ( m_pubPkt + m_cubPkt ) ) = nData;
m_cubPkt += sizeof( int32 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends an int16 to the variable length data associated with this message
// Input: nData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddInt16Data( int16 sData )
{
EnsurePacketSize( sizeof( int16 ) );
*( ( int16 * ) ( m_pubPkt + m_cubPkt ) ) = sData;
m_cubPkt += sizeof( int16 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends an int16 to the variable length data associated with this message
// Input: nData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddUint16Data( uint16 usData )
{
EnsurePacketSize( sizeof( uint16 ) );
*( ( uint16 * ) ( m_pubPkt + m_cubPkt ) ) = usData;
m_cubPkt += sizeof( uint16 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends a uint64 to the variable length data associated with this message
// Input: ulData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddUint64Data( uint64 ulData )
{
EnsurePacketSize( sizeof( uint64 ) );
*( ( uint64 * ) ( m_pubPkt + m_cubPkt ) ) = ulData;
m_cubPkt += sizeof( uint64 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends an int64 to the variable length data associated with this message
// Input: lData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddInt64Data( int64 lData )
{
EnsurePacketSize( sizeof( int64 ) );
*( ( int64 * ) ( m_pubPkt + m_cubPkt ) ) = lData;
m_cubPkt += sizeof( int64 );
}
//-----------------------------------------------------------------------------
// Purpose: Appends variable length data to this message. (Can be called
// repeatedly to append multiple data blocks.)
// Input: pvData - pointer to data to append
// cubData - size of data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddVariableLenData( const void *pvData, uint cubLen )
{
if ( cubLen > 0 )
{
EnsurePacketSize( cubLen );
memcpy( ( m_pubPkt + m_cubPkt ), pvData, cubLen );
m_cubPkt += cubLen;
}
}
//-----------------------------------------------------------------------------
// Purpose: Appends a float to the variable length data associated with this message
// Input: nData - data to append
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddFloatData( float flData )
{
EnsurePacketSize( sizeof( float ) );
*( ( float * ) ( m_pubPkt + m_cubPkt ) ) = flData;
m_cubPkt += sizeof( float );
}
//-----------------------------------------------------------------------------
// Purpose: Appends a string to the variable-length portion of this message.
// Input: pchIn - String to append to the message
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::AddStrData( const char *pchIn )
{
if ( !pchIn )
{
Assert( pchIn ); // passing a null string here is a code bug
return;
}
int cchIn = Q_strlen( pchIn );
EnsurePacketSize( cchIn + 1 );
Q_strncpy( ( char * ) ( m_pubPkt + m_cubPkt ), pchIn, cchIn + 1 );
m_cubPkt += ( cchIn + 1 );
}
template <typename MSG_HEADER_TYPE>
template <typename T>
void CMsgBase_t<MSG_HEADER_TYPE>::AddStructure( T& structure )
{
EnsurePacketSize(sizeof(structure)) ;
*( reinterpret_cast<T*>(m_pubPkt+m_cubPkt)) = structure ;
m_cubPkt += sizeof(structure) ;
}
//-----------------------------------------------------------------------------
// Purpose: Read a bool from the variable-length part of the message
// Input: pbData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadBoolData( bool *pbData )
{
return BReadUint8Data( ( uint8* ) pbData );
}
//-----------------------------------------------------------------------------
// Purpose: Read a uint8 from the variable-length part of the message
// Input: pbData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadUint8Data( uint8 *pbData )
{
if ( m_pubVarRead + sizeof( uint8 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*pbData = * ( ( uint8 * ) m_pubVarRead );
m_pubVarRead += sizeof( uint8 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Read a uint32 from the variable-length part of the message
// Input: punData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadUintData( uint32 *punData )
{
if ( m_pubVarRead + sizeof( uint32 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*punData = * ( ( uint32 * ) m_pubVarRead );
m_pubVarRead += sizeof( uint32 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads an int32 from the variable-length part of the message
// Input: pnData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadIntData( int32 *pnData )
{
if ( m_pubVarRead + sizeof( int32 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*pnData = * ( ( int32 * ) m_pubVarRead );
m_pubVarRead += sizeof( int32 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads an int16 from the variable-length part of the message
// Input: pnData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadInt16Data( int16 *psData )
{
if ( m_pubVarRead + sizeof( int16 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*psData = * ( ( int16 * ) m_pubVarRead );
m_pubVarRead += sizeof( int16 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads an uint16 from the variable-length part of the message
// Input: pnData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadUint16Data( uint16 *pusData )
{
if ( m_pubVarRead + sizeof( uint16 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*pusData = * ( ( uint16 * ) m_pubVarRead );
m_pubVarRead += sizeof( uint16 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Read a uint64 from the variable-length part of the message
// Input: pulData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadUint64Data( uint64 *pulData )
{
if ( m_pubVarRead + sizeof( uint64 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*pulData = * ( ( uint64 * ) m_pubVarRead );
m_pubVarRead += sizeof( uint64 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads an int64 from the variable-length part of the message
// Input: plData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadInt64Data( int64 *plData )
{
if ( m_pubVarRead + sizeof( int64 ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*plData = * ( ( int64 * ) m_pubVarRead );
m_pubVarRead += sizeof( int64 );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads a float from the variable-length part of the message
// Input: pflData - [return] The value we read goes here
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadFloatData( float *pflData )
{
if ( m_pubVarRead + sizeof( float ) > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
*pflData = * ( ( float * ) m_pubVarRead );
m_pubVarRead += sizeof( float );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads a block of data from the variable-length part of the message
// Input: pvBuff - [return] Buffer to copy the data into
// cubRead - Amount of data to read
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadVariableLenData( void *pvBuff, uint32 cubRead )
{
if ( m_pubVarRead + cubRead > m_pubPkt + m_cubPkt )
{
ReportBufferOverflow();
return false;
}
Q_memcpy( pvBuff, m_pubVarRead, cubRead );
m_pubVarRead += cubRead;
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads a string from the variable-length part of the message
// Input: pchBuff - [return] Buffer to copy the string into
// cchBuff - Size of the buffer
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadStr( char *pchBuff, int cchBuff )
{
int cchRead = 0;
int cchLeft = CubReadRemaining(); // get bytes left in message
// search for string end in rest of message
while ( cchRead < cchLeft )
{
// if we hit the 0, stop
if ( *(m_pubVarRead+cchRead) == 0 )
break;
cchRead++;
}
cchRead++; // add the 0
// check if string fits into buffer and was found within packet bounds
if ( ( cchRead > cchBuff ) || (cchRead > cchLeft) )
{
// at least return an empty string since most code doesn't check the return value
if ( cchBuff > 0 )
pchBuff[0] = 0;
ReportBufferOverflow();
return false;
}
// copy the string to output buffer
Q_memcpy( pchBuff, m_pubVarRead, cchRead );
m_pubVarRead += ( cchRead * sizeof( char ) );
return true;
}
//-----------------------------------------------------------------------------
// Purpose: Reads a string from the variable-length part of the message
// Input: pchString - [return] copied string
// Output: true if we were able to read, false if we overran the buffer
//-----------------------------------------------------------------------------
template <typename MSG_HEADER_TYPE>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadStr( CUtlString *pstr )
{
if ( pstr == NULL )
return false;
int cchRead = 0;
int cchLeft = CubReadRemaining(); // get bytes left in message
// search for string end in rest of message
while ( cchRead < cchLeft )
{
// if we hit the 0, stop
if ( *(m_pubVarRead+cchRead) == 0 )
break;
cchRead++;
}
cchRead++; // add the 0
// check if string was found within packet bounds
if ( cchRead > cchLeft )
{
ReportBufferOverflow();
return false;
}
// copy the string
*pstr = (const char*)m_pubVarRead;
m_pubVarRead += ( cchRead * sizeof( char ) );
return true;
}
template <typename MSG_HEADER_TYPE>
template <typename T>
bool CMsgBase_t<MSG_HEADER_TYPE>::BReadStructure( T& structure )
{
int cbLeft = CubReadRemaining() ;
if( cbLeft >= sizeof(structure))
{
structure = *( reinterpret_cast<T*>(m_pubVarRead)) ;
m_pubVarRead += sizeof(structure) ;
return true ;
}
return false ;
}
template <typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::PacketDump()
{
//if ( !g_ConVarMsgErrorDump.GetBool() )
// return;
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "Packet dump: raw size %u, header size %u, body size %u, var size %u\n", m_cubPkt, m_cubMsgHdr, m_cubStruct, CubVarData() );
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "Header dump: %s\n", Hdr().GetHeaderDescription().String() );
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "Struct dump: %u bytes\n", m_cubStruct );
char szLine[100] = "";
char szText[32] = "";
for ( uint i=0; i<m_cubStruct; i++ )
{
byte nValue = PubBody()[i];
uint nIndex = i%16;
Q_snprintf( szLine+3*nIndex, 8, "%02X ", nValue );
if ( nValue > 31 && nValue != '%' )
szText[nIndex] = nValue;
else
szText[nIndex] = '.';
if ( nIndex == 15 || i==(m_cubStruct-1))
{
szText[nIndex+1] = '\n';
szText[nIndex+2] = 0;
Q_strcat( szLine, "; ", sizeof(szLine) );
Q_strcat( szLine, szText, sizeof(szLine) );
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "%s", szLine );
szLine[0]=0;
}
}
uint cubVarData = MIN( CubVarData(), 1024u );
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "VarData dump: %u bytes\n", cubVarData );
for ( uint i=0; i<cubVarData; i++ )
{
byte nValue = PubVarData()[i];
uint nIndex = i%16;
Q_snprintf( szLine+3*nIndex, 8, "%02X ", nValue );
if ( nValue > 31 && nValue != '%' )
szText[nIndex] = nValue;
else
szText[nIndex] = '.';
if ( nIndex == 15 || i==(cubVarData-1))
{
szText[nIndex+1] = '\n';
szText[nIndex+2] = 0;
Q_strcat( szLine, " ; ", sizeof(szLine) );
Q_strcat( szLine, szText, sizeof(szLine) );
EmitInfo( SPEW_NETWORK, SPEW_NEVER, LOG_ALWAYS, "%s", szLine );
szLine[0]=0;
}
}
}
template<typename MSG_HEADER_TYPE>
void CMsgBase_t<MSG_HEADER_TYPE>::ReportBufferOverflow()
{
EmitWarning( SPEW_NETWORK, SPEW_ALWAYS, "Read buffer overflowed on incoming %s packet\n", Hdr().PchMsgName( ) );
PacketDump();
}
} // namespace GCSDK
#endif // GCMSGBASE_H