evaftpacket.h

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/***************************************************************************
 *   Copyright (C) 2005 by yunfan                                          *
 *   yunfan_zg@163.com                                                     *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/ 

#ifndef EVAFTPACKET_H
#define EVAFTPACKET_H

#define QQ_FILE_AGENT_PACKET_TAG           0x04
#define QQ_FILE_AGENT_PACKET_TAIL          0x03

#define QQ_FILE_AGENT_CMD_CREATE           0x0001
#define QQ_FILE_AGENT_CMD_LOGIN            0x0002
#define QQ_FILE_AGENT_CMD_TRANSFER         0x0003
#define QQ_FILE_AGENT_CMD_READY            0x0005
#define QQ_FILE_AGENT_CMD_START            0x0006

#define QQ_FILE_SYN_CMD_CREATE             0x0001
#define QQ_FILE_SYN_CMD_REGISTER           0x0002


class EvaFTPacket {
public:
        // for incoming packets
        EvaFTPacket(const unsigned char *buf, const int len);
        // for outcoming packets
        EvaFTPacket();
        virtual ~EvaFTPacket();

        // for incoming packets
        const bool parse();
        // for outcoming packets
        const bool fill(unsigned char *buf, int *len);

        // for incoming packets
        const unsigned char *getBody() const { return m_Buffer; }
        const int getBodyLength() const { return m_BufferLength; }
protected:
        void setPacketTag(const unsigned char tag, const unsigned char tail);
        virtual const int parseHeader(unsigned char *buf);
        virtual const bool parseBody(unsigned char *buf, const int len);
        virtual const int fillHeader(unsigned char *buf);
        virtual const int fillBody(unsigned char *buf);

        inline const unsigned char getTag() const { return m_Tag; }
        inline const unsigned char getTail() const { return m_Tail; }

        int m_HeaderLength;
        bool m_HasTags;
        bool m_HasLength;
        unsigned int m_LengthOffset;
private:
        unsigned char m_Tag, m_Tail;

        // for incoming packets
        unsigned char *m_Buffer;
        int m_BufferLength;
};

class EvaFTAgentPacket : public EvaFTPacket{
public:
        EvaFTAgentPacket(const unsigned char *buf, const int len);
        EvaFTAgentPacket(const short cmd);


        inline void setVersion(const unsigned short version) { m_Version = version; }
        inline void setSequence(const unsigned short seq) { m_Sequence = seq; }
        inline void setCommand(const unsigned short cmd) { m_Command = cmd; }
        inline void setQQ(const int qq) { m_Id = qq; }
        inline void setSessionId(const unsigned int sid) { m_Session = sid; }
        inline const unsigned short getVersion() const { return m_Version; }
        inline const unsigned short getSequence() const { return m_Sequence; }
        inline const unsigned short getCommand() const { return m_Command; }
        inline const int getQQ() const { return m_Id; }
        inline const unsigned int getSessionId() const { return m_Session; }

        void setFileAgentKey(const unsigned char *key);
protected:
        const int parseHeader(unsigned char *buf);
        //virtual const bool pareseBody();
        const int fillHeader(unsigned char *buf);
        //virtual const unsigned int fillBody(unsigned char *buf);

        unsigned char m_FileAgentKey[16];
        unsigned int m_Session;
private:
        unsigned short m_Version;
        unsigned short m_Command;
        unsigned short m_Sequence;
        int m_Id;
};

class EvaFTSynPacket : public EvaFTPacket{
public:
        EvaFTSynPacket(const unsigned char *buf, const int len);
        EvaFTSynPacket(const short cmd);

        inline void setVersion(const unsigned short version) { m_Version = version; }
        inline void setSequence(const unsigned short seq) { m_Sequence = seq; }
        inline void setCommand(const unsigned short cmd) { m_Command = cmd; }
        inline void setQQ(const int qq) { m_Id = qq; }
        inline void setSessionId(const unsigned int sid) { m_Session = sid; }
        inline const unsigned short getVersion() const { return m_Version; }
        inline const unsigned short getSequence() const { return m_Sequence; }
        inline const unsigned short getCommand() const { return m_Command; }
        inline const int getQQ() const { return m_Id; }
        inline const unsigned int getSessionId() const { return m_Session; }

        void setFileAgentKey(const unsigned char *key);
protected:
        const int parseHeader(unsigned char *buf);
        const int fillHeader(unsigned char *buf);

        unsigned char m_FileAgentKey[16];
        unsigned int m_Session;
private:
        static const unsigned char m_StartTag = 0x02;
        unsigned short m_Version;
        unsigned short m_Command;
        unsigned short m_Sequence;
        // for sending , m_Id is my qq number
        int m_Id;
};

#endif // #ifndef EVAFTPACKET_H

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