| 1 | #ifndef DISSECTOR_H |
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| 2 | #define DISSECTOR_H |
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| 3 | |
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| 4 | #include <string> |
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| 5 | #include <list> |
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| 6 | #include "DispatchInfo.h" |
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| 7 | |
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| 8 | #ifdef _MSC_VER |
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| 9 | typedef int ssize_t; |
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| 10 | #endif |
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| 11 | |
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| 12 | class Dissector { |
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| 13 | |
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| 14 | public: |
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| 15 | Dissector(); |
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| 16 | virtual ~Dissector(); |
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| 17 | virtual Dissector * Clone() const = 0; |
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| 18 | virtual bool Dissect(const unsigned char * pData, const ssize_t nDataLen) = 0; |
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| 19 | virtual bool NeedReassembly() const = 0; |
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| 20 | virtual bool Reassemble(Dissector * pDissector, ProtocolInfo * pProtocolInfo); |
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| 21 | virtual const EProtocolType GetUpperLayerType() const = 0; |
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| 22 | virtual void SaveResult(DispatchInfo & info) const; |
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| 23 | virtual bool IsPacketValid() const; |
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| 24 | virtual bool FinishDissection(); |
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| 25 | virtual bool CreatesUnprocessedData() const; |
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| 26 | bool ContainsUnprocessedData(); |
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| 27 | std::pair<const unsigned char *, ssize_t> GetUnprocessedData() const; |
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| 28 | void SetProtocolInfo(ProtocolInfo * pInfo); |
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| 29 | ProtocolInfoElement * GetLayerInfo() const; |
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| 30 | protected: |
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| 31 | void SaveLayerInfo(); |
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| 32 | virtual ProtocolInfoElement * CreateLayerInfo() = 0; |
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| 33 | void SavePayload(const unsigned char * pData, ssize_t nPayloadSize); |
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| 34 | void AllocPayload(ssize_t nPayloadSize); |
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| 35 | void SetPayloadAt(const unsigned char * pSrcData, ssize_t nSrcSize, int nOffset); |
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| 36 | void AppendPayload(Dissector * pSrc); |
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| 37 | unsigned char * GetPayload() const; |
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| 38 | ssize_t GetPayloadSize() const; |
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| 39 | std::pair<unsigned char *, ssize_t> DetachData(); |
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| 40 | void SeparateUnprocessedData(int nNewPayloadSize); |
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| 41 | ProtocolInfo * GetProtocolInfo() const; |
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| 42 | bool MatchProtocolInfo(ProtocolInfo * pInfo) const; |
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| 43 | private: |
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| 44 | unsigned char * m_pPayload, * m_pUnprocessedData; |
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| 45 | ssize_t m_nPayloadSize, m_nUnprocessedSize; |
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| 46 | ProtocolInfoElement * m_pLayerInfo; |
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| 47 | ProtocolInfo * m_pProtocolInfo; |
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| 48 | }; |
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| 49 | |
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| 50 | #endif |
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