#include?
#include?
#include?
#include?
#define?SIO_RCVALL????????????_WSAIOW（IOC_VENDOR1）
#define?MAX_LOG??20

#pragma?comment（?lib?“ws2_32.lib“?）

using?namespace?std;
//IP首部
typedef?struct?tIPPackHead
{
	enum?PROTOCOL_TYPE{
		?PROTOCOL_TCP?=?6
		??PROTOCOL_UDP?=?17
		??PROTOCOL_ICMP?=?1
		??PROTOCOL_IGMP?=?2????
	};
	inline?unsigned?HeadLen（）?const
	{
		?//首部長度單位為4bytes。因此乘4
		?return?（ver_hlen?&?0x0F）?<	}
	inline?unsigned?PackLen（）?const
	{
		?return?wPacketLen;
	}
BYTE?ver_hlen;???????//IP協議版本和IP首部長度。高4位為版本，低4位為首部的長度（單位為4bytes）
BYTE?byTOS;????????//服務類型
WORD?wPacketLen;?//IP包總長度。包括首部，單位為byte。[Big?endian]
WORD?wSequence;?????//序號，一般每個IP包的序號遞增。[Big?endian]
WORD?wMarkFragPoi;?
WORD???wID;?//片段ID標識
WORD???wFlags;?//標志
WORD???FragOff;?//片偏移
BYTE?byTTL;??????????//生存時間??
BYTE?byProtocolType;?//協議類型，見PROTOCOL_TYPE定義
WORD?wHeadCheckSum;?????//IP首部校驗和[Big?endian]
DWORD?dwIPSrc;??????????//源地址
DWORD?dwIPDes;??????????//目的地址
}?IP_PK_HEAD;


int?DecodeIP（char?*buf?int?lenFILE?*file）
{
//int?n?=?len;

//if（?n?>=?sizeof（IP_PK_HEAD）?）
//{
?????IP_PK_HEAD?iphead;
?????memcpy（?&iphead?buf?sizeof（iphead）?）;

?????//以下三個為Big?Endian字節順序，轉換成主機字節順序
?????iphead.wPacketLen?=?ntohs（?iphead.wPacketLen?）;
?????iphead.wSequence?=?ntohs（?iphead.wSequence?）;
?????iphead.wHeadCheckSum?=?ntohs（?iphead.wHeadCheckSum?）;
?????iphead.wID?=?ntohs（?iphead.wID?）;
?????iphead.wFlags?=?ntohs（?iphead.wFlags?）;
	?iphead.FragOff?=?ntohs（?iphead.FragOff?）;
?????in_addr?srcdst;
?????src.S_un.S_addr?=?iphead.dwIPSrc;
?????dst.S_un.S_addr?=?iphead.dwIPDes;

?????char?strsrc[20]strdst[20];
?????strcpy（strsrc?inet_ntoa（src）?）;
?????strcpy（?strdst??inet_ntoa（dst））;

?????printf（?“IP數據包:?版本=%d首部長度=%d協議類型=%dIP包總長度=%d序號=%d標識=%d標志=%d片偏移=%d生存時間=%dIP首部校驗和=%d源地址=%s目的地址=%s?“
??????iphead.ver_hlen?>>?4
??????（iphead.ver_hlen?&?0x0F）?<??????iphead.byProtocolType
??????iphead.wPacketLen
??????iphead.wSequence
??????iphead.wID
??????iphead.wFlags
??????iphead.FragOff
	??iphead.byTTL
	??iphead.wHeadCheckSum
??????strsrc
??????strdst?）;
	?printf（“\n\n“）;

	?fprintf（file“IP數據包:?版本=%d首部長度=%d協議類型=%dIP包總長度=%d序號=%d標識=%d標志=%d片偏移=%d生存時間=%dIP首部校驗和=%d源地址=%s目的地址=%s?\n\n“
??????iphead.ver_hlen?>>?4
??????（iphead.ver_hlen?&?0x0F）?<??????iphead.byProtocolType
??????iphead.wPacketLen
??????iphead.wSequence
??????iphead.wID
??????iphead.wFlags
??????iphead.FragOff
	??iphead.byTTL
	??iphead.wHeadCheckSum
??????strsrc
??????strdst?）;
//}

return?0;
}

void?AutoWSACleanup（）
{
::WSACleanup（）;
}

int?main（int?argc?char?*argv[]）
{

	FILE?*file;

	if（argc?!=?2）{
		file	=?fopen（“log.txt““w“）;	
	}
	else{
		file	=?fopen（argv[1]“w“）;
	}



//初始化winsock庫，使用2.2版本
u_short?wVersionRequested?=?0x0202;
WSADATA?wsaData;
if（?SOCKET_ERROR?==?WSAStartup（?wVersionRequested?&wsaData?）?）
{????????
?????cout

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3684??2008-06-18?03:20??0606303036（李輝）（需修訂版）\log.txt

?????文件????????846??2008-06-18?03:20??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.plg

?????文件???????5002??2008-06-18?03:08??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.cpp

?????文件??????41984??2008-06-18?03:23??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.ncb

?????文件?????205824??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\vc60.idb

?????文件?????151552??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\vc60.pdb

?????文件?????520317??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\0606303036（李輝）（需修訂版）.exe

?????文件????1106944??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\0606303036（李輝）（需修訂版）.pdb

?????文件????5730096??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\0606303036（李輝）（需修訂版）.pch

?????文件?????155562??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\0606303036（李輝）（需修訂版）.obj

?????文件?????790028??2008-06-18?03:20??0606303036（李輝）（需修訂版）\Debug\0606303036（李輝）（需修訂版）.ilk

?????文件???????3643??2008-06-18?03:20??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.dsp

?????文件??????48640??2008-06-18?03:23??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.opt

?????文件????????577??2008-06-18?03:23??0606303036（李輝）（需修訂版）\0606303036（李輝）（需修訂版）.dsw

?????目錄??????????0??2008-06-18?03:18??0606303036（李輝）（需修訂版）\Debug

?????目錄??????????0??2008-06-18?03:19??0606303036（李輝）（需修訂版）

-----------?---------??----------?-----??----

??????????????8764699????????????????????16