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Please fill the <prog_name> with "getMacAddr" in this Makefile[Generic makefile for single-target] first.

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/*
 * IPAddress.h
 *
 * Created by Chris Whiteford on 2009-02-20.
 * Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */

#define MAXADDRS 32

extern char *if_names[MAXADDRS];
extern char *ip_names[MAXADDRS];
extern char *hw_addrs[MAXADDRS];
extern unsigned long ip_addrs[MAXADDRS];

// Function prototypes

extern void InitAddresses();
extern void FreeAddresses();
extern void GetIPAddresses();
extern void GetHWAddresses();

 

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/*
 * IPAddress.c
 *
 * Created by Chris Whiteford on 2009-02-20.
 * Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/ethernet.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <errno.h>
#include <net/if_dl.h>

#include "IPAddress.h"

#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))

#define BUFFERSIZE 4000

char *if_names[MAXADDRS];
char *ip_names[MAXADDRS];
char *hw_addrs[MAXADDRS];
unsigned long ip_addrs[MAXADDRS];

static int	nextAddr = 0;

void InitAddresses()
{
	int i;
	for (i=0; i<MAXADDRS; ++i)
	{
		if_names[i] = ip_names[i] = hw_addrs[i] = NULL;
		ip_addrs[i] = 0;
	}
}

void FreeAddresses()
{
	int i;
	for (i=0; i<MAXADDRS; ++i)
	{
		if (if_names[i] != 0) free(if_names[i]);
		if (ip_names[i] != 0) free(ip_names[i]);
		if (hw_addrs[i] != 0) free(hw_addrs[i]);
		ip_addrs[i] = 0;
	}
	InitAddresses();
}

void GetIPAddresses()
{
	int					i, len, flags;
	char				buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;
	struct ifconf		ifc;
	struct ifreq		*ifr, ifrcopy;
	struct sockaddr_in	*sin;

	char temp[80];

	int sockfd;

	for (i=0; i<MAXADDRS; ++i)
	{
		if_names[i] = ip_names[i] = NULL;
		ip_addrs[i] = 0;
	}

	sockfd = socket(AF_INET, SOCK_DGRAM, 0);
	if (sockfd < 0)
	{
		perror("socket failed");
		return;
	}
	
	ifc.ifc_len = BUFFERSIZE;
	ifc.ifc_buf = buffer;
	
	if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0)
	{
		perror("ioctl error");
		return;
	}
	
	lastname[0] = 0;
	
	for (ptr = buffer; ptr < buffer + ifc.ifc_len; )
	{
		ifr = (struct ifreq *)ptr;
		len = max(sizeof(struct sockaddr), ifr->ifr_addr.sa_len);
		ptr += sizeof(ifr->ifr_name) + len;	// for next one in buffer
	
		if (ifr->ifr_addr.sa_family != AF_INET)
		{
			continue;	// ignore if not desired address family
		}
	
		if ((cptr = (char *)strchr(ifr->ifr_name, ':')) != NULL)
		{
			*cptr = 0;		// replace colon will null
		}
	
		if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == 0)
		{
			continue;	/* already processed this interface */
		}
	
		memcpy(lastname, ifr->ifr_name, IFNAMSIZ);
	
		ifrcopy = *ifr;
		ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy);
		flags = ifrcopy.ifr_flags;
		if ((flags & IFF_UP) == 0)
		{
			continue;	// ignore if interface not up
		}
	
		if_names[nextAddr] = (char *)malloc(strlen(ifr->ifr_name)+1);
		if (if_names[nextAddr] == NULL)
		{
			return;
		}
		strcpy(if_names[nextAddr], ifr->ifr_name);
	
		sin = (struct sockaddr_in *)&ifr->ifr_addr;
		strcpy(temp, inet_ntoa(sin->sin_addr));
	
		ip_names[nextAddr] = (char *)malloc(strlen(temp)+1);
		if (ip_names[nextAddr] == NULL)
		{
			return;
		}
		strcpy(ip_names[nextAddr], temp);

		ip_addrs[nextAddr] = sin->sin_addr.s_addr;

		++nextAddr;
	}
	
	close(sockfd);
}

void GetHWAddresses()
{
	struct ifconf ifc;
	struct ifreq *ifr;
	int i, sockfd;
	char buffer[BUFFERSIZE], *cp, *cplim;
	char temp[80];

	for (i=0; i<MAXADDRS; ++i)
	{
		hw_addrs[i] = NULL;
	}

	sockfd = socket(AF_INET, SOCK_DGRAM, 0);
	if (sockfd < 0)
	{
		perror("socket failed");
		return;
	}

	ifc.ifc_len = BUFFERSIZE;
	ifc.ifc_buf = buffer;

	if (ioctl(sockfd, SIOCGIFCONF, (char *)&ifc) < 0)
	{
		perror("ioctl error");
		close(sockfd);
		return;
	}

	ifr = ifc.ifc_req;

	cplim = buffer + ifc.ifc_len;

	for (cp=buffer; cp < cplim; )
	{
		ifr = (struct ifreq *)cp;
		if (ifr->ifr_addr.sa_family == AF_LINK)
		{
			struct sockaddr_dl *sdl = (struct sockaddr_dl *)&ifr->ifr_addr;
			int a,b,c,d,e,f;
			int i;

			strcpy(temp, (char *)ether_ntoa((struct ether_addr*)LLADDR(sdl)));
			sscanf(temp, "%x:%x:%x:%x:%x:%x", &a, &b, &c, &d, &e, &f);
			sprintf(temp, "%02X:%02X:%02X:%02X:%02X:%02X",a,b,c,d,e,f);

			for (i=0; i<MAXADDRS; ++i)
			{
				if ((if_names[i] != NULL) && (strcmp(ifr->ifr_name, if_names[i]) == 0))
				{
					if (hw_addrs[i] == NULL)
					{
						hw_addrs[i] = (char *)malloc(strlen(temp)+1);
						strcpy(hw_addrs[i], temp);
						break;
					}
				}
			}
		}
		cp += sizeof(ifr->ifr_name) + max(sizeof(ifr->ifr_addr), ifr->ifr_addr.sa_len);
	}

	close(sockfd);
}

 

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/*
 * Device.h
 *
 * Created by Jackie Xie on 2011-07-06.
 * Copyright 2011 Jackie Xie. All rights reserved.
 *
 */
#import <Foundation/NSObject.h>

@interface Device : NSObject {
	NSString *deviceInfoStr;
	NSString *ifname;
	NSString *ipaddr;
	NSString *macaddr;
}

@property (copy) NSString* deviceInfoStr;
@property (copy) NSString* ifname;
@property (copy) NSString* ipaddr;
@property (copy) NSString* macaddr;
-(id) initWithDeviceInfo;
- (NSString *)DeviceInfo;
- (NSString *)getDeviceInfo;
- (NSString *)getDeviceName;
- (NSString *)getIPAddr;
- (NSString *)getMacAddr;
+(void) log:(NSString *)msg;

@end

 

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/*
 * Device.m
 *
 * Created by Jackie Xie on 2011-07-06.
 * Copyright 2011 Jackie Xie. All rights reserved.
 *
 */
#import <Foundation/Foundation.h>
#import "IPAddress.h"
#import "Device.h"
#import "stdio.h"
#import "string.h"

@implementation Device

@synthesize deviceInfoStr;
@synthesize ifname;
@synthesize ipaddr;
@synthesize macaddr;

// 預設建構子
-(id) init{
	return self;
}

// 建構子
-(id) initWithDeviceInfo {
	ifname = ipaddr = macaddr = nil;
	return [self init];
}

- (NSString *)DeviceInfo {
	int i;
	NSString *deviceInfo = nil;
	NSString *deviceName = nil;
	NSString *deviceIP = nil;
	NSString *deviceMac = nil;
	NSString *tmp = nil;
	NSString *delimiter=@"; ";
	char tmpstr[200];
	
	InitAddresses();
	GetIPAddresses();
	GetHWAddresses();
	
	for (i=0; i<MAXADDRS; ++i)
	{
		static unsigned long localHost = 0x7F000001;		// 127.0.0.1
		unsigned long theAddr;
	
		theAddr = ip_addrs[i];
	
		if (theAddr == 0) break;
		if (theAddr == localHost) continue;
		if (strncmp(if_names[i], "lo", 2) != 0)				
		{
			tmp = [[NSString alloc] initWithUTF8String:(const char *)if_names[i]];
			if(ifname != nil){
				deviceName = [ifname copy];
				ifname = [[deviceName autorelease]stringByAppendingString:[tmp autorelease]];
			}
			else
			{
				ifname = [tmp copy];
			}
			deviceName = [ifname copy];
			ifname = [[deviceName autorelease] stringByAppendingString:delimiter];

			tmp = [[NSString alloc] initWithUTF8String:(const char *)ip_names[i]];
			if(ipaddr != nil){
				deviceIP =[ipaddr copy];
				ipaddr = [[deviceIP autorelease]stringByAppendingString:[tmp autorelease]];
			}
			else
			{
				ipaddr = [tmp copy];
			}
			deviceIP = [ipaddr copy];
			ipaddr = [[deviceIP autorelease] stringByAppendingString:delimiter];

			tmp = [[NSString alloc] initWithUTF8String:(const char *)hw_addrs[i]];
			if(macaddr != nil){
				deviceMac = [macaddr copy];
				macaddr = [[deviceMac autorelease]stringByAppendingString:[tmp autorelease]];
			}
			else
			{
				macaddr = [tmp copy];
			}
			deviceMac = [macaddr copy];
			macaddr = [[deviceMac autorelease] stringByAppendingString:delimiter];

			sprintf(tmpstr , "Adapter en has a IP of Interface:%s IP:%s MAC:%s\n", if_names[i], ip_names[i], hw_addrs[i]);
			NSLog(@"%s", tmpstr);
			tmp = [[NSString alloc] initWithUTF8String:(const char *)tmpstr];
			if(deviceInfoStr != nil){
				deviceInfo = [deviceInfoStr copy];
				deviceInfoStr = [[deviceInfo autorelease]stringByAppendingString:[tmp autorelease]];
			}
			else
			{
				deviceInfoStr = [tmp copy];
			}
			deviceInfo = [deviceInfoStr copy];
			deviceInfoStr = [[deviceInfo autorelease] stringByAppendingString:@";"];
		}
	}

	FreeAddresses();
	return deviceInfoStr;
}

- (NSString *)getDeviceInfo {
	deviceInfoStr = self.DeviceInfo;
	return deviceInfoStr;
}


- (NSString *)getDeviceName {
	return ifname;
}

- (NSString *)getIPAddr {
	return ipaddr;
}

- (NSString *)getMacAddr {
	return macaddr;
}

+(void) log:(NSString *)msg{
	NSLog(@"%@",msg);
}
@end

 

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/*
 * getMacAddr.m
 *
 * Created by Jackie Xie on 2011-07-06.
 * Copyright 2011 Jackie Xie. All rights reserved.
 *
 */

#import <Foundation/Foundation.h>
#import <Foundation/NSObject.h>
#import <Cocoa/Cocoa.h>
#import "IPAddress.h"
#import "Device.h"

int main( int argc, const char *argv[] )
{
	int i;
	NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	Device *device = [[Device alloc] initWithDeviceInfo];
	NSString *deviceInfo = [device getDeviceInfo];
	NSString *deviceName = [device getDeviceName];
	NSString *deviceIP = [device getIPAddr];
	NSString *deviceMac = [device getMacAddr];
	
	[Device log:deviceInfo];
	[Device log:deviceName];
	[Device log:deviceIP];
	[Device log:deviceMac];

	[deviceMac release];
	[deviceIP release];
	[deviceName release];
	[deviceInfo release];
	[device release];
	[pool drain];
	return 0;
}

Then build the target "getMacAddr" by make in console/terminal.

[ jackie localhost ~/test/objc/getMacAddr ]# ls
Device.h  Device.m  IPAddress.c  IPAddress.h  Makefile  getMacAddr.m
[ jackie localhost ~/test/objc/getMacAddr ]# make
cc  -MD  -c -o Device.o Device.m
cc  -MD  -c -o getMacAddr.o getMacAddr.m
gcc -Wno-import  -MD  -c -o IPAddress.o IPAddress.c
gcc -o getMacAddr -L/System/Library/Frameworks/Foundation.framework/ -lobjc -framework Foundation Device.o getMacAddr.o IPAddress.o 
[ jackie localhost ~/test/objc/getMacAddr ]# ./getMacAddr 
2011-07-07 11:41:31.517 getMacAddr[2979:903] Adapter en has a IP of Interface:en0 IP:192.168.1.2 MAC:58:B0:35:FD:25:7C
2011-07-07 11:41:31.520 getMacAddr[2979:903] Adapter en has a IP of Interface:en1 IP:192.168.0.2 MAC:F8:1E:DF:EB:4D:DC
2011-07-07 11:41:31.521 getMacAddr[2979:903] Adapter en has a IP of Interface:en2 IP:10.211.55.2 MAC:00:1C:42:00:00:08
2011-07-07 11:41:31.524 getMacAddr[2979:903] Adapter en has a IP of Interface:en3 IP:10.37.129.2 MAC:00:1C:42:00:00:09
2011-07-07 11:41:31.524 getMacAddr[2979:903] Adapter en has a IP of Interface:vmnet1 IP:192.168.176.1 MAC:00:50:56:C0:00:01
2011-07-07 11:41:31.525 getMacAddr[2979:903] Adapter en has a IP of Interface:vmnet8 IP:172.16.206.1 MAC:00:50:56:C0:00:08
2011-07-07 11:41:31.525 getMacAddr[2979:903] [en0 192.168.1.2 58:B0:35:FD:25:7C] ;[en1 192.168.0.2 F8:1E:DF:EB:4D:DC] ;[en2 10.211.55.2 00:1C:42:00:00:08] ;[en3 10.37.129.2 00:1C:42:00:00:09] ;[vmnet1 192.168.176.1 00:50:56:C0:00:01] ;[vmnet8 172.16.206.1 00:50:56:C0:00:08] ;
2011-07-07 11:41:31.526 getMacAddr[2979:903] en0; en1; en2; en3; vmnet1; vmnet8; 
2011-07-07 11:41:31.526 getMacAddr[2979:903] 192.168.1.2; 192.168.0.2; 10.211.55.2; 10.37.129.2; 192.168.176.1; 172.16.206.1; 
2011-07-07 11:41:31.529 getMacAddr[2979:903] 58:B0:35:FD:25:7C; F8:1E:DF:EB:4D:DC; 00:1C:42:00:00:08; 00:1C:42:00:00:09; 00:50:56:C0:00:01; 00:50:56:C0:00:08; 
[ jackie localhost ~/test/objc/getMacAddr ]#

Above codes could be porting to iOS devices, such as iPhone、iPod Touch、iPad⋯etc.：

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// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
    ipAddress.text = [self deviceIPAdress];
}

 

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