packet.h

使用VC++开发的很棒的上网拨号工具的程序的源码,可以选择PING,UDP,TCP/IP等等方式,功能比较全面.Using Visual C + + development of the great

// Packet.h: interface for the CPacket class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_PACKET_H__219DF6D1_5BBD_11D5_9C5D_0010B54D784D__INCLUDED_)
#define AFX_PACKET_H__219DF6D1_5BBD_11D5_9C5D_0010B54D784D__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "CRC.h"
#include "Ip.h"

#define MAXRX	256

#define PING			0
#define REQ				1
#define ACK				2
#define NAK				3
#define REJ				4
#define TERM_REQ		5
#define TERM_ACK		6
#define	CODE_REJ		7
#define PROTOCAL_REJ	8
#define ECHO_REQ		9
#define ECHO_REP		10
#define DISCARD_REQ		11
#define IDENTIFICATION	12
#define TIME_REM		13

#define LCP_CODE_MAX	13
#define IPCP_CODE_MAX	7


#define IP		0x0021
#define IPCP	0x8021
#define CCP		0x80FD
#define LCP		0xC021
#define PAP		0xC023

#define INITIAL		0
#define LCPOPEN		1
#define LCPESTABLISH	2
#define LCPDOWN		3
#define PAPOPEN		4
#define	PAPPASS		5
#define IPCPOPEN	6
#define IPCPNAK		7
#define IPCPOK		8
#define IPCPACK		9
#define IPSTART		10

#define IPCPREOPEN	11
#define IPCPRENAK	12
#define IPCPREOK	13
//#define 


#define		IP_ICMP			01
#define		IP_TCP			06
#define		IP_UDP			17

//in ICMP protocol
#define		ICMP_PING		0x08
#define		ICMP_PINGREPLY	0x00



class CPacket  
{
public:
	CPacket();
	virtual ~CPacket();
	
	bool checkpacket(BYTE *packetstr);
	void testoption(WORD wType,BYTE bCode,BYTE* pOptionstr);
	void makepacket(WORD wType,BYTE bCode,BYTE* pPacketRx);
	int charactermap(int iLen);
	int ipheader(int i);

public:
	void makeIPpacket(BYTE protocal, BYTE type, BYTE *temp);
	void InitPacket();
	WORD wType;
	int compress,iLenpos,iHeadcheckpos,iIcmpcheckpos;
	int PF_compress;
	BYTE bState;
	BYTE bID;		//unique packet id

	BOOL reject;	//make sure whether my packet is ACK or REJ
	BOOL map;		//map control character
	int iOptionnum;	//get the option number

	BYTE bPacketTx1[256];	//send packet buffer
	BYTE bPacketTx[256];


	
	int TxLen;

	PPP_OPTION option[8];


	IP_HEADER IP_header;
	IP_HEADER IP_headerTx;

	ICMP_HEADER ICMP_header;
	PPP_UDP	m_udp;	


	
	BYTE bIpaddress[4];
	CCRC m_crc;
	BYTE IP_protocal;
	BYTE recPacketS;
	BYTE RxCompress;
	BYTE IPCP_s;


};

#endif // !defined(AFX_PACKET_H__219DF6D1_5BBD_11D5_9C5D_0010B54D784D__INCLUDED_)