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