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GCArp.h
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GCArp.h
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//
// Created by gaochong on 17-11-24.
//
#ifndef ELANTOOL_GCARP_H
#define ELANTOOL_GCARP_H
#include <unistd.h>
#include <memory.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <string.h>
#include <errno.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<ctype.h>
#include <fcntl.h>
#define MAX_MAC_LEN 24 // MAC字串缓冲区的最大长度(byte)
#define COMPART_MAC ":" // MAC字串的分格符, Warnning:修改此宏,必须再修改源程序!!!
#define MAX_BUF_LEN 128
#define PADD_MAC "00:00:00:00:00:00" // 填充的MAC
#define DES_MAC "FF:FF:FF:FF:FF:FF" // 广播MAC
//#define ARP_SEND_COUNT 1 // 发送ARP请求的ARP包的个数
//#define RX_ARP_COUNT 1 // rx count of ARP response
//#define SLEEP_MAX_US ( 1000 ) // unit microsecond */
struct ether_header {
unsigned char ether_dhost[6]; /* destination eth addr */
unsigned char ether_shost[6]; /* source ether addr */
unsigned short ether_type; /* packet type ID field */
};
struct arp_header {
unsigned short int ar_hrd; /* Format of hardware address. */
unsigned short int ar_pro; /* Format of protocol address. */
unsigned char ar_hln; /* Length of hardware address. */
unsigned char ar_pln; /* Length of protocol address. */
// -------------------------
unsigned short int ar_op; /* ARP opcode (command). */
unsigned char __ar_sha[6]; /* Sender hardware address. */
unsigned char __ar_sip[4]; /* Sender IP address. */
unsigned char __ar_tha[6]; /* Target hardware address. */
unsigned char __ar_tip[4]; /* Target IP address. */
// -------------------------
};
struct arp_packet {
struct ether_header ethhdr;
struct arp_header arphdr;
unsigned char padding[18]; /* filled with 0 */
};
/**
* arp reply:
* op = 2
* ethhdr.ether_dhost = arphdr.__ar_tha = switch hard addr
* ethhdr.ether_shost = arphdr.__ar_sha = local hard addr
* arphdr.__ar_tip = switch ip
* arphdr.__ar_sip = victim ip
*/
#define FRAME_TYPE 0x0806 /* arp=0x0806,rarp=0x8035 */
#define HARD_TYPE 1 /* ethernet is 1 */
#define PROTO_TYPE 0x0800 /* IP is 0x0800 */
#define OP_CODE 1 /* arp=1/2,1为请求,2为应答,rarp=3/4 */
class GCArp {
public:
GCArp();
GCArp(int srCount, int outTime);
~GCArp();
const char* GetRemoteIPMAC( const char *nic_name, const char *nic_ip, const char *des_ip );
private:
char strETH[MAX_BUF_LEN] = {0}; // 本机NIC名称
char strLocalMAC[MAX_BUF_LEN] = {0}; // 本机MAC
char strSrcIP[MAX_BUF_LEN] = {0}; // 本机IP
char strDesMAC[MAX_BUF_LEN] = {0};
char strDesIP[MAX_BUF_LEN] = {0}; // 目的IP
char strTarIP[MAX_BUF_LEN] = {0}; // Target IP address
char strTarMAC[MAX_BUF_LEN] = {0}; // Target hardware address
int find_ip_flag = 0; // 1 means find, 0 means not find */
char* GetLocalMac(char *strEth); // get loacl NIC's MAC
void set_ip_addr(char *,char *); // 填充IP
void set_hw_addr(char buf[], char *str); // 填充MAC
char* GetMacByIP(char *strSrcIP, char *strSrcMAC, char *strDesIP ,char *strNIC ); // 获取指定IP的MAC
int arp_main( const char *nic_name, const char *nic_ip, const char *des_ip );
int srCount = 1;
int outTime = 250;
};
#endif //ELANTOOL_GCARP_H