#include?
#include
#include?“pcap.h“
#include?“stdio.h“
#include
#include?
#include???//文件的輸入輸出;
#pragma?comment（lib“ws2_32.lib“）
#pragma?comment（lib“wpcap.lib“）
using?namespace?std;

/*下邊是以太網(wǎng)的協(xié)議格式?*/
struct?ethernet_header
?{?
	u_int8_t?ether_dhost[6];??/*目的以太地址*/
	u_int8_t?ether_shost[6];??/*源以太網(wǎng)地址*/
	u_int16_t?ether_type;??????/*以太網(wǎng)類型*/
?};

/*ip地址格式*/
typedef?u_int32_t?in_addr_t;

struct?ip_header
?{
#ifdef?WORKS_BIGENDIAN
??u_int8_t?ip_version:4????/*version:4*/
???????ip_header_length:4;?/*IP協(xié)議首部長度Header?Length*/
#else
?u_int8_t?ip_header_length:4
???????ip_version:4;
#endif
?u_int8_t?ip_tos;?????????/*服務類型Differentiated?Services??Field*/
?u_int16_t?ip_length;??/*總長度Total?Length*/
?u_int16_t?ip_id;?????????/*標識identification*/
?u_int16_t?ip_off;????????/*片偏移*/
?u_int8_t?ip_ttl;????????????/*生存時間Time?To?Live*/
?u_int8_t?ip_protocol;????????/*協(xié)議類型（TCP或者UDP協(xié)議）*/
?u_int16_t?ip_checksum;??/*首部檢驗和*/
????????struct?in_addr??ip_source_address;?/*源IP*/
????????struct?in_addr??ip_destination_address;?/*目的IP*/
?};

/*關于tcp頭部的定義*/
struct?tcp_header
?{?
??u_int16_t?tcp_source_port;		??//源端口號
??
??u_int16_t?tcp_destination_port;	//目的端口號
??
??u_int32_t?tcp_acknowledgement;	//序號
??
??u_int32_t?tcp_ack;	//確認號字段
?#ifdef?WORDS_BIGENDIAN
??u_int8_t?tcp_offset:4?
?????tcp_reserved:4;
?#else
??u_int8_t?tcp_reserved:4
?????tcp_offset:4;
?#endif
??u_int8_t?tcp_flags;
??u_int16_t?tcp_windows;	//窗口字段
??u_int16_t?tcp_checksum;	//檢驗和
??u_int16_t?tcp_urgent_pointer;	//緊急指針字段
};

/*下邊實現(xiàn)tcp數(shù)據(jù)包分析的函數(shù)定義tcp_protocol_packet_callback*/
void?tcp_protocol_packet_callback（u_char?*argumentconst?struct?pcap_pkthdr*
packet_headerconst?u_char*?packet_content）
{
	?struct?tcp_header?*tcp_protocol?;?????/*tcp協(xié)議變量*/
	?u_char?flags;						??/*標記*/
	?int?header_length;				??/*頭長度*/
	?u_short?source_port;		???/*源端口*/
	?u_short?destination_port;???/*目的端口*/
	?u_short?windows;				/*窗口大小*/
	?u_short?urgent_pointer;	?/*緊急指針*/
	?u_int?sequence;				?/*序列號*/
	?u_int?acknowledgement;???/*確認號*/
	?u_int16_t???checksum;???????/*檢驗和*/
	?tcp_protocol=（struct?tcp_header?*）?（packet_content+14+20）;??/*獲得tcp首部內(nèi)容*/
	?source_port?=ntohs（tcp_protocol->tcp_source_port）;				??/*獲得源端口號*/
	?destination_port?=ntohs（tcp_protocol->tcp_destination_port）;?/*獲得目的端口號*/
	?header_length?=tcp_protocol->tcp_offset?*4;							/*獲得首部長度*/
	?sequence?=ntohl（tcp_protocol->tcp_acknowledgement）;		/*獲得序列號*/
	?acknowledgement?=ntohl（tcp_protocol->tcp_ack）;
	?windows?=?ntohs（tcp_protocol->tcp_windows）;
	?urgent_pointer?=?ntohs（tcp_protocol->tcp_urgent_pointer）;
	?flags?=?tcp_protocol->tcp_flags;
	?checksum?=ntohs?（tcp_protocol->tcp_checksum）;
	?printf（“\n==========	運輸層（TCP協(xié)議）	==========\n“）;
	?printf（“源端口：\t?%d\n“source_port）;
	?printf（“目的端口：\t?%d\n“destination_port）;

	?int?min=?（?destination_port?	?cout<<“應用層協(xié)議是：\t“;
	?switch?（min）
???{

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-01-01?20:31??解析IP數(shù)據(jù)包\
?????目錄???????????0??2019-01-01?20:31??解析IP數(shù)據(jù)包\Debug\
?????文件??????205824??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\vc60.idb
?????文件??????143360??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\vc60.pdb
?????文件??????553057??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.exe
?????文件??????808332??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.ilk
?????文件??????364721??2018-12-28?10:43??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.log
?????文件??????222617??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.obj
?????文件?????5465812??2018-12-27?19:57??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.pch
?????文件?????1131520??2018-12-28?10:50??解析IP數(shù)據(jù)包\Debug\解析IP數(shù)據(jù)包.pdb
?????文件???????72616??2018-12-27?23:32??解析IP數(shù)據(jù)包\TCP_1995.jpg
?????文件???????49008??2018-12-27?23:32??解析IP數(shù)據(jù)包\UDP_2000.jpg
?????文件??????157493??2018-12-28?10:11??解析IP數(shù)據(jù)包\外網(wǎng).jpg
?????文件???????57558??2018-12-27?23:36??解析IP數(shù)據(jù)包\網(wǎng)絡層協(xié)議.jpg
?????文件???????10029??2018-12-28?11:58??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.cpp
?????文件????????3475??2018-12-28?10:50??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.dsp
?????文件?????????532??2018-12-28?11:23??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.dsw
?????文件??????111536??2018-12-27?23:34??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.jpg
?????文件???????41984??2018-12-28?11:23??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.ncb
?????文件???????48640??2018-12-28?11:23??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.opt
?????文件????????1211??2018-12-28?10:50??解析IP數(shù)據(jù)包\解析IP數(shù)據(jù)包.plg