Linux 下获取LAN中指定IP的网卡的MAC（物理地址）

王朝system·作者佚名 2006-01-10

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// all.h

// 2005/06/20,a.m. wenxy

#ifndef _ALL_H

#define _ALL_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>

// ---------------------

// ´´½¨ARP°üµÄÍ·ÎÄ¼þ

#include<netinet/in.h>

#include<arpa/inet.h>

/* #include<linux/if_ether.h> */

#include<ctype.h>

#include <fcntl.h>

// ---------------------

#include <unistd.h>

#include <string>

#include <iostream>

using namespace std;

#define MAX_MAC_LEN 24 // MAC×Ö´®»º³åÇøµÄ×î´ó³¤¶È(byte)

#define COMPART_MAC ":" // MAC×Ö´®µÄ·Ö¸ñ·û, Warnning:ÐÞ¸Ä´Ëºê£¬±ØÐëÔÙÐÞ¸ÄÔ´³ÌÐò!!!

#endif /* end _ALL_h */

// end file

// main.cpp

// 2005/06/20,a.m. wenxy

#include "all.h"

// function declare

static string GetLocalMac(string & strEth); // get loacl NIC's MAC

void set_ip_addr(char *,char *); // Ìî³äIP

void set_hw_addr(char buf[], char *str); // Ìî³äMAC

static string GetMacByIP(string strSrcIP, string strSrcMAC, string strDesIP ,string strNIC); // »ñÈ¡Ö¸¶¨IPµÄMAC

#define SRC_IP "10.0.1.77" // Ô´IP

#define DES_IP "10.0.1.35" // Ä¿µÄIP

#define LOCAL_HW "00:C0:4C:39:0D:6F" // 10.0.1.77µÄeth0µÄMAC

#define DEVICE "eth0" // ½Ó¿Ú

#define PADD_MAC "00:00:00:00:00:00" // Ìî³äµÄMAC

#define DES_MAC "FF:FF:FF:FF:FF:FF" // ¹ã²¥MAC

#define ARP_SEND_COUNT 3 // ·¢ËÍARPÇëÇóµÄARP°üµÄ¸öÊý

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=1/2,1ÎªÇëÇó£¬2ÎªÓ¦´ð,rarp=3/4 */

// linuxÏÂ»ñÈ¡LANÀïÖ¸¶¨IPµÄÍø¿¨MAC

// In: argv[1]:±¾»úIP£¬argv[2]:Ä¿µÄIP

// Out:

int main( int argc, char *argv[] )

{

string strETH; // ±¾»úNICÃû³Æ

string strLocalMAC; // ±¾»úMAC

string strSrcIP; // ±¾»úIP

string strDesMAC; // Ä¿µÄMAC

string strDesIP; // Ä¿µÄIP

// ¼ì²é²ÎÊý

if ( argc != 4 )

{

printf("Useage: get_mac [interface name of the IP] [IP] [ARP IP]\n\n");

return 0;

}

strETH = argv[1]; //"eth0";

strSrcIP = argv[2]; //"10.0.1.77";

strDesIP = argv[3]; //"10.0.1.69";

printf("Run ......\n");

printf("»ñÈ¡ %s ½Ó¿ÚµÄMAC ......\n", strETH.c_str());

// »ñÈ¡Ö¸¶¨NICÃû³ÆµÄMAC

strLocalMAC = GetLocalMac(strETH);

#if 0

printf("Note: %s[%s]\n", strETH.c_str(), strLocalMAC.c_str());

#endif

// »ñÈ¡Ö¸¶¨½Ó¿ÚMAC

if ( 0 == strcmp( (const char*)strLocalMAC.c_str(), (const char*)"") )

{

printf("Error: call strcmp() failed\n");

printf("--------------------------------\n\n");

return -1;

}

else

{

printf("»ñÈ¡½Ó¿ÚMAC³É¹¦: %s [%s]\n", strETH.c_str(), strLocalMAC.c_str());

}

// »ñÈ¡Ö¸¶¨IPÍø¿¨µÄMAC

strDesMAC = GetMacByIP(strSrcIP, strLocalMAC, strDesIP, strETH);

printf("strDesMAC = %s\n", strDesMAC.c_str());

return 0;

}

// »ñÈ¡±¾µØÄ³Íø¿¨µÄMAC

// In: strEth

// Out: Èô³É¹¦£¬·µ»ØMAC×Ö·û´®£¬Ê§°Ü£¬·µ»Ø""(¿Õ´®)

static string GetLocalMac(string & strEth)

{

string strLocalMAC;

int s;

struct ifreq buffer;

char chBuff[MAX_MAC_LEN];

memset(chBuff, 0x0, sizeof(chBuff));

//arp_process(NULL);

s = socket(PF_INET, SOCK_DGRAM, 0);

if (-1 == s)

{

printf("Error: create socket failture\n");

printf("--------------------------------\n\n");

return "";

}

memset(&buffer, 0x00, sizeof(buffer));

strcpy(buffer.ifr_name, strEth.c_str()); // "eth0"

if ( -1 == ioctl(s, SIOCGIFHWADDR, &buffer))

{

printf("Error: »ñÈ¡½Ó¿Ú %S MAC Ê§°Ü\n", strEth.c_str());

printf("--------------------------------\n\n");

return "";

}

close(s);

for( s = 0; s < 6; s++ )

{

memset(chBuff, 0x0, sizeof(chBuff));

sprintf( chBuff, "%.2X", (unsigned char)buffer.ifr_hwaddr.sa_data[s]);

strLocalMAC += chBuff;

//printf("%.2X", (unsigned char)buffer.ifr_hwaddr.sa_data[s]);

if (s < 5)

{

memset(chBuff, 0x0, sizeof(chBuff));

sprintf( chBuff, "%s", COMPART_MAC);

strLocalMAC += chBuff;

//printf(":");

}

//printf("\n");

return strLocalMAC;

}

//-------------------------------------------------------

// ·¢ËÍARP°ü£¬²¢½ÓÊÕARPÓ¦´ð°ü£¬È¡³öMAC

// In: strSrcIP:±¾»úIP£¬strSrcMAC:±¾»úIPµÄMAC£¬strDesIP:±»ÇëÇóÓ¦´ðMACµÄIP , strNIC:±¾µØ½Ó¿ÚÃû

// Out: Èô³É¹¦£¬·µ»ØMAC£¬Ê§°Ü·µ»Ø""(¿Õ´®)

static string GetMacByIP(string strSrcIP, string strSrcMAC, string strDesIP ,string strNIC)

{

int sockfd; // socket handle

struct arp_packet arp; // arp ÇëÇó°ü

struct arp_packet arpRes; // arp Ó¦ÓÃ´ð°ü

struct sockaddr sa; // eth

char chSrcIP[24];

char chDesIP[24];

char chSrcMAC[24];

char chNIC[8];

memset(chSrcIP, 0x00, sizeof(chSrcIP));

memset(chDesIP, 0x00, sizeof(chDesIP));

memset(chSrcMAC, 0x00, sizeof(chSrcMAC));

memset(chNIC, 0x00, sizeof(chNIC));

sprintf(chSrcIP, "%s", strSrcIP.c_str());

sprintf(chDesIP, "%s", strDesIP.c_str());

sprintf(chSrcMAC, "%s", strSrcMAC.c_str());

sprintf(chNIC, "%s", strNIC.c_str());

#define SRC_IP chSrcIP // Ô´IP

#define DES_IP chDesIP // Ä¿µÄIP

#define LOCAL_HW chSrcMAC // eth0µÄMAC

#define DEVICE chNIC // ±¾»ú½Ó¿ÚÃû

memset(&arp, 0x00, sizeof(arp));

memset(&arpRes, 0x00, sizeof(arpRes));

#if 1

printf("Ô´IP[%s] Ô´MAC[%s] Ä¿µÄIP[%s]\n", strSrcIP.c_str(), strSrcMAC.c_str(), strDesIP.c_str());

#endif

sockfd = socket(AF_INET, SOCK_PACKET, htons(0x0806));

if(sockfd < 0)

{

printf("Error: create socket failed\n");

printf("--------------------------------\n\n");

return "";

}

// ÉèÖÃsocketÎª·Ç×èÈûÄ£Ê½

if ( -1 != fcntl(sockfd, F_SETFL, O_NONBLOCK) )

{

printf("ÉèÖÃsocketÎª·Ç×èÈûÄ£Ê½³É¹¦\n");

}

else

{

printf("Warning: ÉèÖÃsocketÎª·Ç×èÈûÄ£Ê½Ê§°Ü[errno = %d]\n", errno);

}

// ÉèÖÃsocket½ÓÊÕ³¬Ê±

struct timeval tv;

tv.tv_sec = 0;

tv.tv_usec= 100;

if ( 0 == setsockopt( sockfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) )

{

printf("ÉèÖÃsocket½ÓÊÕ³¬Ê±³É¹¦\n");

}

else

{

printf("Warning: ÉèÖÃsocket½ÓÊÕ³¬Ê±Ê§°Ü[errno = %d]\n", errno);

}

#if 1

printf("´´½¨socket SOCK_PACKET ³É¹¦\n");

printf("Note: ´´½¨ARPÇëÇó°ü ......\n");

printf("--------------------------------\n\n");

#endif

// ´´½¨ARPÇëÇó°ü

/* init arp packet header */

arp.ethhdr.ether_type = htons(FRAME_TYPE);

set_hw_addr( (char *)arp.ethhdr.ether_dhost, DES_MAC );

set_hw_addr( (char *)arp.ethhdr.ether_shost, LOCAL_HW );

#if 1

printf("%x|", arp.ethhdr.ether_type);

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.ethhdr.ether_dhost[i]);

}

printf("|");

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.ethhdr.ether_shost[i]);

}

printf("\n--------------------------------\n");

printf("³õÊ¼»¯ARP°üÖ¡Í·(ÒÔÌ«ÍøÊ×²¿)³É¹¦\n\n");

#endif

/* init arp packet data */

printf("³õÊ¼»¯ARP°üÖ¡Êý¾Ý(ARPÇëÇó·Ö×é) ......\n");

printf("--------------------------------\n");

arp.arphdr.ar_hrd = htons(HARD_TYPE); // 1

arp.arphdr.ar_pro = htons(PROTO_TYPE); // 0x0800

arp.arphdr.ar_op = htons(OP_CODE); // 1

arp.arphdr.ar_hln = (unsigned char)(6);

arp.arphdr.ar_pln = (unsigned char)(4);

#if 1

printf("%d|%d|%d|%d|%d|\n", arp.arphdr.ar_hrd, arp.arphdr.ar_pro, arp.arphdr.ar_op, arp.arphdr.ar_hln, arp.arphdr.ar_pln);

printf("--------------------------------\n");

#endif

set_hw_addr((char *)arp.arphdr.__ar_tha, DES_MAC); // ÇëÇóIPµÄMAC

set_hw_addr((char *)arp.arphdr.__ar_sha, LOCAL_HW); // ·¢ËÍÕßµÄMAC

set_ip_addr((char *)arp.arphdr.__ar_tip, DES_IP); // ÇëÇóMACµÄIP

set_ip_addr((char *)arp.arphdr.__ar_sip, SRC_IP); // Ô´IP

bzero(arp.padding, 18); // Ìî³ä18¸ö×Ö½Ú

#if 1

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.arphdr.__ar_sha[i]);

}

printf("|");

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.arphdr.__ar_sip[i]);

}

printf("|");

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.arphdr.__ar_tha[i]);

}

printf("|");

for (int i = 0; i < 6; i++)

{

printf("%d_", arp.arphdr.__ar_tip[i]);

}

printf("|");

printf("\n--------------------------------\n");

#endif

/* send arp reply packet */

memset(&sa, 0x00, sizeof(sa));

strcpy(sa.sa_data, DEVICE);

// ·¢ËÍARP°ü

int nSendCount = ARP_SEND_COUNT;

while( (nSendCount --) > 0)

{

printf("·¢ËÍARPÇëÇó°ü[%d Bytes]...... [µÚ%d¸ö]\n", sizeof(arp), nSendCount);

if( sendto(sockfd, &arp, sizeof(arp), 0, (struct sockaddr*) &sa, sizeof(sa)) < 0 )

{

printf("Error: ·¢ËÍARP°üÊ§°Ü [errno = %d]\n", errno);

return "";

}

// ½ÓÊÕARPÓ¦´ð°ü

printf("NOte: ½ÓÊÕARPÓ¦´ð ......\n");

int nTryCount = 5;

int nRecvByte = 0;

int nAddrLen = sizeof(sa);

{

nRecvByte = recvfrom(sockfd, &arpRes, sizeof(arpRes),0, (struct sockaddr*)&sa, (socklen_t*)&nAddrLen);

// ÈôÊÇËùÇëÇóIPµÄARPÓ¦´ð°ü£¬ÍË³öwhile

string strTarIP; /* Target IP address */

if ( nRecvByte >= 60 && 2 == ntohs(arpRes.arphdr.ar_op) )

{

char chBuff[MAX_MAC_LEN];

string strTarIP; /* Target IP address */

// ¸ñÊ½»¯IP

for (int s = 0; s < 4; s++)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%d", (unsigned char)arpRes.arphdr.__ar_sip[s]);

strTarIP += chBuff;

if (s < 3)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%s", ".");

strTarIP += chBuff;

}

if ( !strcmp(strTarIP.c_str(), strDesIP.c_str()) )

{

printf("\nÇëÇóIP[%s] = Ó¦´ðIP[%s]\n", strDesIP.c_str(), strTarIP.c_str());

break;

}

}while( nTryCount -- ); // ½ÓÊÕARPÓ¦´ð°üµÄ´ÎÊý

printf("ÒÑ½ÓÊÕµ½ARPÓ¦´ð°ü [%d Bytes]\n", nRecvByte);

// ½ÓÊÕ³¬Ê±£¬»ò´íÎó

if ( nRecvByte == -1 )

{

printf("Warning: ½ÓÊÕ³¬Ê±£¬»ò¼ÆËã»ú[%s]Ã»ÓÐÏìÓ¦\n", strDesIP.c_str());

close(sockfd);

return "";

}

printf("·ÖÎöARPÓ¦´ð°ü ......\n");

char chBuff[MAX_MAC_LEN];

string strTarIP; /* Target IP address */

string strTarMAC; /* Target hardware address */

memset(chBuff, 0x00, sizeof(chBuff));

// ¸ñÊ½»¯IP

for (int s = 0; s < 4; s++)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%d", (unsigned char)arpRes.arphdr.__ar_sip[s]);

strTarIP += chBuff;

if (s < 3)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%s", ".");

strTarIP += chBuff;

}

// ¸ñÊ½»¯MAC

memset(chBuff, 0x00, sizeof(chBuff));

for (int s = 0; s < 6; s++)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%02X", (unsigned char)arpRes.arphdr.__ar_sha[s]);

strTarMAC += chBuff;

if (s < 5)

{

memset(chBuff, 0x00, sizeof(chBuff));

sprintf( (char *)chBuff, "%s", COMPART_MAC);

strTarMAC += chBuff;

}

// Êä³öÄ¿µÄIP£¬Ä¿µÄMAC

printf("Ó¦´ðIP[%s] ¶ÔÓ¦µÄMAC[%s]\n", strTarIP.c_str(), strTarMAC.c_str());

printf("\n--------------------------------\n\n");

close(sockfd);

// ·µ»Ø±»ÇëÇóµÄMAC

return strTarMAC;

/* return */

}

// Ìî³äMAC

void set_hw_addr (char buf[], char *str)

{

int i;

char c, val;

for(i = 0; i < 6; i++)

{

if (!(c = tolower(*str++)))

perror("Invalid hardware address"),exit(1);

if (isdigit(c))

val = c - '0';

else if (c >= 'a' && c <= 'f')

val = c-'a'+10;

else

perror("Invalid hardware address"),exit(1);

buf[i] = val << 4;

if (!(c = tolower(*str++)))

perror("Invalid hardware address"),exit(1);

if (isdigit(c))

val = c - '0';

else if (c >= 'a' && c <= 'f')

val = c-'a'+10;

else

perror("Invalid hardware address"),exit(1);

buf[i] |= val;

if (*str == ':')

str++;

}

// Ìî³äIP

void set_ip_addr(char *buf, char *str)

{

struct in_addr addr;

memset(&addr, 0x00, sizeof(addr));

addr.s_addr = inet_addr(str);

memcpy(buf, &addr, 4);

}

//-------------------------------------------------------

// end file

# makefile

bin = get_mac

objets = main.o

rubbish = $(objets) $(bin)

$(bin) : main.o

g++ -o $(bin) main.o

main.o : main.cpp all.h

g++ -c main.cpp

.PHONY : clean

clean :

-rm $(rubbish)

# end makefile