TCP数据包转发程序

基于MFC对话框和Winpcap实现的接收TCP数据包、伪造包头并转发给目的主机的程序 并附带过程文档

// Connection.cpp: implementation of the CConnection class.
//
//////////////////////////////////////////////////////////////////////

#include “stdafx.h“
#include “Hopping Client.h“
#include “Connection.h“

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

CConnection::CConnection（）
{

}

CConnection::~CConnection（）
{

}


void CConnection::CreateConnection（）
{

}

void CConnection::RecvHandle（）
{
	
}

void CConnection::SendSYNPacket（u_char *SourceMac u_char*DestMac unsigned long SourceIp unsigned long DestIp 
								int Sourceport int Destport）
{
	TcpPacket_t *theTcpPacket = new TcpPacket_t;
	
	/*初始化物理头*/
	theTcpPacket->theIpPacket.theEthHead.eth_type = htons（0x0800）;
	memcpy（theTcpPacket->theIpPacket.theEthHead.source_mac SourceMac 6）;
	memcpy（theTcpPacket->theIpPacket.theEthHead.dest_mac DestMac 6）;

	/*初始化IP包头*/
	theTcpPacket->theIpPacket.theIpHead.dwDestAddr = htonl（DestIp）;
	theTcpPacket->theIpPacket.theIpHead.dwSourceAddr = htonl（SourceIp）;
	theTcpPacket->theIpPacket.theIpHead.ucProtocol = 6;
	theTcpPacket->theIpPacket.theIpHead.ucTos = 0;
	theTcpPacket->theIpPacket.theIpHead.ucTtl = 119;
	theTcpPacket->theIpPacket.theIpHead.ucVersionAndHeadLength = 0x45;
	theTcpPacket->theIpPacket.theIpHead.usCheckSum = 0;
	theTcpPacket->theIpPacket.theIpHead.usFlagsAndFragmentOffset = 0;
	theTcpPacket->theIpPacket.theIpHead.usIdentification = 1234;
	theTcpPacket->theIpPacket.theIpHead.usTotalLength = 60;	

	theTcpPacket->theIpPacket.theIpHead.usCheckSum = CheckSum（（u_short*）（&（theTcpPacket->theIpPacket.theIpHead）） sizeof（IpHead_t））;

	/*初始化TCP包头*/
	theTcpPacket->theTcpHead.dwAck = 0;
	theTcpPacket->theTcpHead.dwSeq = 0;
	theTcpPacket->theTcpHead.ucFlag = 0x0002;		//SYN置1
	theTcpPacket->theTcpHead.ucLength = 0x0070;
	theTcpPacket->theTcpHead.usCheckSum = 0;
	theTcpPacket->theTcpHead.usDestPort = htons（Destport）;
	
	theTcpPacket->theTcpHead.usSourcePort = htons（Sourceport）;
	theTcpPacket->theTcpHead.usUrgent = 0;
	theTcpPacket->theTcpHead.usWindow = 0xFFFF;

	theTcpPacket->theTcpHead.usNopOpt = 0x0101;
	theTcpPacket->theTcpHead.usSackOpt = 0x0204;
	theTcpPacket->theTcpHead.unMssOpt = htonl（0x020405B4）;
	



	


}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       2472  2009-10-22 14:35  Ip Hopping System客户端\Code\Connection.cpp

     文件        763  2009-10-22 14:35  Ip Hopping System客户端\Code\Connection.h

     文件      22852  2009-10-21 09:08  Ip Hopping System客户端\Code\Hopping Client.aps

     文件       1743  2009-10-23 16:42  Ip Hopping System客户端\Code\Hopping Client.clw

     文件       2164  2009-10-19 09:54  Ip Hopping System客户端\Code\Hopping Client.cpp

     文件       4466  2009-10-22 15:45  Ip Hopping System客户端\Code\Hopping Client.dsp

     文件        553  2009-10-19 09:54  Ip Hopping System客户端\Code\Hopping Client.dsw

     文件       1404  2009-10-19 09:54  Ip Hopping System客户端\Code\Hopping Client.h

     文件   11004928  2009-10-26 16:19  Ip Hopping System客户端\Code\Hopping Client.ncb

     文件      57856  2009-10-23 16:46  Ip Hopping System客户端\Code\Hopping Client.opt

     文件       1385  2009-10-23 16:42  Ip Hopping System客户端\Code\Hopping Client.plg

     文件       6233  2009-10-19 17:31  Ip Hopping System客户端\Code\Hopping Client.rc

     文件        892  2009-10-25 09:47  Ip Hopping System客户端\Code\Hopping Client.sln

    ..A..H.     28672  2009-10-26 16:19  Ip Hopping System客户端\Code\Hopping Client.suo

     文件       7512  2009-10-25 09:47  Ip Hopping System客户端\Code\Hopping Client.vcproj

     文件       1415  2009-10-26 16:19  Ip Hopping System客户端\Code\Hopping Client.vcproj.李经纬-PC.李经纬.user

     文件      18026  2009-10-25 13:22  Ip Hopping System客户端\Code\Hopping ClientDlg.cpp

     文件       2540  2009-10-23 21:54  Ip Hopping System客户端\Code\Hopping ClientDlg.h

     文件       3720  2009-10-19 09:54  Ip Hopping System客户端\Code\ReadMe.txt

     文件       1078  2009-10-19 09:54  Ip Hopping System客户端\Code\res\Hopping Client.ico

     文件        406  2009-10-19 09:54  Ip Hopping System客户端\Code\res\Hopping Client.rc2

     文件       1014  2009-10-19 17:31  Ip Hopping System客户端\Code\resource.h

     文件        216  2009-10-19 09:54  Ip Hopping System客户端\Code\StdAfx.cpp

     文件       1054  2009-10-19 09:54  Ip Hopping System客户端\Code\StdAfx.h

     文件       1028  2009-10-21 10:03  Ip Hopping System客户端\Code\targetver.h

     文件       1344  2009-10-23 15:21  Ip Hopping System客户端\Code\TCPPacket.h

     文件     176128  2009-10-25 13:22  Ip Hopping System客户端\Exe\Hopping Client.exe

     文件      64078  2009-10-25 13:25  Ip Hopping System客户端\程序文档\程序过程文档.docx

     目录          0  2009-10-19 09:54  Ip Hopping System客户端\Code\res

     目录          0  2009-10-26 11:19  Ip Hopping System客户端\Code

............此处省略6个文件信息