Mac开发之获取设备名字、IP地址和MAC地址

在项目中遇到需要获取设备名字、IP地址和MAC地址信息，之前用NSHost，结果发现不是很稳定，就放弃了，另外想出了几个方法，下面记录一下：

ViewController.h

//
//  ViewController.h
//  DeviceMACAddress
//
//  Created by Chen Ling on 18/7/2018.
//  Copyright © 2018 Chen Ling. All rights reserved.
//#import <UIKit/UIKit.h>@interface ViewController : UIViewController@property (weak, nonatomic) IBOutlet UILabel *deviceNameLable;
@property (weak, nonatomic) IBOutlet UILabel *deviceIPAddressLable;
@property (weak, nonatomic) IBOutlet UILabel *deviceMACAddressLable;@end

ViewController.m

//
//  ViewController.m
//  DeviceMACAddress
//
//  Created by Chen Ling on 18/7/2018.
//  Copyright © 2018 Chen Ling. All rights reserved.
//#import "ViewController.h"
#import <sys/socket.h>
#import <ifaddrs.h>
#import <netinet/in.h>
#import <arpa/inet.h>
#import <sys/sysctl.h>
#import <net/if.h>
#import <net/if_dl.h>@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib._deviceNameLable.text = [self getDeviceName];_deviceIPAddressLable.text = [self getDeviceIPAddress];_deviceMACAddressLable.text = [self getDeviceMacAddress];
}- (void)didReceiveMemoryWarning {[super didReceiveMemoryWarning];// Dispose of any resources that can be recreated.
}#pragma mark - Gets the device name
- (NSString *)getDeviceName {#if (TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE)return [NSString stringWithFormat:@"%@",[UIDevice currentDevice].name];
#else   // iOS平台return [NSString stringWithFormat:@"%@",[NSHost currentHost].localizedName];
#endif  // macOS平台}#pragma mark - Get the device IP address
- (NSString *)getDeviceIPAddress {NSString *address = @"an error occurred when obtaining ip address";struct ifaddrs *interfaces = NULL;struct ifaddrs *temp_addr = NULL;int success = 0;success = getifaddrs(&interfaces);if (success == 0) { // 0 表示获取成功temp_addr = interfaces;while (temp_addr != NULL) {if( temp_addr->ifa_addr->sa_family == AF_INET) {// Check if interface is en0 which is the wifi connection on the iPhoneif ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {// Get NSString from C Stringstruct sockaddr_in *sockaddr = (struct sockaddr_in *)temp_addr->ifa_addr;address = [NSString stringWithUTF8String:inet_ntoa(sockaddr->sin_addr)];}}temp_addr = temp_addr->ifa_next;}}freeifaddrs(interfaces);NSLog(@"手机的IP是：%@", address);return address;
}#pragma mark - Get the device MAC address
- (NSString *) getDeviceMacAddress{int                 mib[6];size_t              len;char                *buf;unsigned char       *ptr;struct if_msghdr    *ifm;struct sockaddr_dl  *sdl;mib[0] = CTL_NET;mib[1] = AF_ROUTE;mib[2] = 0;mib[3] = AF_LINK;mib[4] = NET_RT_IFLIST;if ((mib[5] = if_nametoindex("en0")) == 0) {printf("Error: if_nametoindex error/n");return NULL;}if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {printf("Error: sysctl, take 1/n");return NULL;}if ((buf = malloc(len)) == NULL) {printf("Could not allocate memory. error!/n");return NULL;}if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {printf("Error: sysctl, take 2");return NULL;}ifm = (struct if_msghdr *)buf;sdl = (struct sockaddr_dl *)(ifm + 1);ptr = (unsigned char *)LLADDR(sdl);NSString *outstring = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];// release pointerfree(buf);return [outstring lowercaseString];
}@end

核心代码iOS和OSX通用，改一下UI就可以了，运行结果：

iOS：

OSX:

下面说说另外一种方法，用命令行获取设备IP地址和MAC地址，思路是ifconfig命令，获取en0的信息，然后筛选出IP和MAC：

#pragma mark - Another way to get the device IP address
- (NSString *)getIPAddress {char ipAddress[16];if ([self getIPAddressCommandResult:ipAddress] == -1) {NSLog(@"获取IP地址失败");}return [NSString stringWithUTF8String:ipAddress];
}- (int)getIPAddressCommandResult:(char *)result {char buffer[16];FILE* pipe = popen("ifconfig en0 | grep inet' ' | cut -d' ' -f 2", "r");if (!pipe)return -1;while(!feof(pipe)) {if(fgets(buffer, 1024, pipe)){//strcat(result, buffer);strncpy(result, buffer, sizeof(buffer) - 1);result[sizeof(buffer) - 1] = '\0';}}pclose(pipe);return 0;
}#pragma mark - Another way to get the device MAC address
- (NSString *)getMacAddress {char macAddress[18];if ([self getMACAddressCommandResult:macAddress] == -1) {NSLog(@"获取MAC地址失败");}return [NSString stringWithUTF8String:macAddress];
}- (int)getMACAddressCommandResult:(char *)result {char buffer[18];FILE* pipe = popen("ifconfig en0 | grep ether | cut -d' ' -f 2", "r");if (!pipe)return -1;while(!feof(pipe)) {if(fgets(buffer, 1024, pipe)){//strcat(result, buffer);strncpy(result, buffer, sizeof(buffer) - 1);result[sizeof(buffer) - 1] = '\0';}}pclose(pipe);return 0;
}

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Mac开发之获取设备名字、IP地址和MAC地址

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