7 ios mac地址

2015-11-12 22:31:34 MacPu 阅读数 26280

在做iOS蓝牙开发的时候肯定会遇到这种问题,苹果自带的CoreBluetooth SDK中不能获取到蓝牙的Mac地址,只能得到UUID,但是UUID并不是唯一的,换一个设备再连接UUID就不一样了。而且Android手机是可以获取到Mac地址的,不能很好的兼容Android手机,Android是不可能获取到UUID,为了很好的兼容,只能iOS想办法获取Mac地址了。幸运的是iOS也不是没有办法获取到Mac地址。

主要思路

虽然苹果官方的API没有获取Mac地址的方法,但是当我翻看蓝牙的文档的时候,我发现蓝牙有提供一个设备信息的service[service UUID:0x180A],里面提供了两个characteristic:获取芯片的Mac地址(0x2A23 )和获取软件的版本号(0x2A26)。如下图所示:

实现

根据这个思路:

[peripheral discoverServices:@[[CBUUID UUIDWithString:@"180A"]]];
[service discoverCharacteristics:@[[CBUUID UUIDWithString:@"2A23"]]];
[peripheral readValueForCharacteristic:characteristic]
NSString *value = [NSString stringWithFormat:@"%@",characteristic.value];
NSMutableString *macString = [[NSMutableString alloc] init];
[macString appendString:[[value substringWithRange:NSMakeRange(16, 2)] uppercaseString]];
[macString appendString:@":"];
[macString appendString:[[value substringWithRange:NSMakeRange(14, 2)] uppercaseString]];
[macString appendString:@":"];
[macString appendString:[[value substringWithRange:NSMakeRange(12, 2)] uppercaseString]];
[macString appendString:@":"];
[macString appendString:[[value substringWithRange:NSMakeRange(5, 2)] uppercaseString]];
[macString appendString:@":"];
[macString appendString:[[value substringWithRange:NSMakeRange(3, 2)] uppercaseString]];
[macString appendString:@":"];
[macString appendString:[[value substringWithRange:NSMakeRange(1, 2)] uppercaseString]];
//00:E0:4C:3F:14:DE                            

这里可一个大家推荐一个非常好用的蓝牙开发的库,跟CoreBluetooth的接口一摸一样,只是数据是用过block返回的,用起来更加的方便。MPBluetoothKit
Github地址

下面是写的MPBluetoothKit 获取Mac地址的代码

    CBUUID *macServiceUUID = [CBUUID UUIDWithString:@"180A"];
    CBUUID *macCharcteristicUUID = [CBUUID UUIDWithString:@"2A23"];
    [mPeripheral discoverServices:@[macServiceUUID] withBlock:^(MPPeripheral *peripheral, NSError *error) {
        if(peripheral.services.count){
            MPService *service = [peripheral.services objectAtIndex:0];
            [service discoverCharacteristics:@[macCharcteristicUUID] withBlock:^(MPPeripheral *peripheral, MPService *service, NSError *error) {
                for(MPCharacteristic *characteristic in service.characteristics){
                    if([characteristic.UUID isEqual:macCharcteristicUUID]){
                        [characteristic readValueWithBlock:^(MPPeripheral *peripheral, MPCharacteristic *characteristic, NSError *error){
                            NSString *value = [NSString stringWithFormat:@"%@",characteristic.value];
                            NSMutableString *macString = [[NSMutableString alloc] init];
                            [macString appendString:[[value substringWithRange:NSMakeRange(16, 2)] uppercaseString]];
                            [macString appendString:@":"];
                            [macString appendString:[[value substringWithRange:NSMakeRange(14, 2)] uppercaseString]];
                            [macString appendString:@":"];
                            [macString appendString:[[value substringWithRange:NSMakeRange(12, 2)] uppercaseString]];
                            [macString appendString:@":"];
                            [macString appendString:[[value substringWithRange:NSMakeRange(5, 2)] uppercaseString]];
                            [macString appendString:@":"];
                            [macString appendString:[[value substringWithRange:NSMakeRange(3, 2)] uppercaseString]];
                            [macString appendString:@":"];
                            [macString appendString:[[value substringWithRange:NSMakeRange(1, 2)] uppercaseString]];
                            NSLog(@"macString:%@",macString);
                        }];
                    }
                }

            }];
        }
    }];                          

是不是一个很方便库啊?当然这是小弟开源的一个库,如果喜欢的话就去Github帮忙star一下哈 ^_^

update 2016.1.7

因为有网友要求写一个例子,所以我写了一个DEMO放在Github上了
BluetoothMacAddressDemo

2011-07-12 10:55:44 doubleuto 阅读数 22019

#include <sys/socket.h> // Per msqr

#include <sys/sysctl.h>

#include <net/if.h>

#include <net/if_dl.h>


#pragma mark MAC

// Return the local MAC addy

// Courtesy of FreeBSD hackers email list

// Accidentally munged during previous update. Fixed thanks to mlamb.

- (NSString *) macaddress

{

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)];

NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];

free(buf);

return [outstring uppercaseString];

}

2018-03-15 16:49:24 qq_31841071 阅读数 1213
引入头文件
#import <NetworkExtension/NetworkExtension.h>
#import <SystemConfiguration/CaptiveNetwork.h>

- (NSString *)getMacAddress {
    NSArray *array = CFBridgingRelease(CNCopySupportedInterfaces());
    NSDictionary *info = nil;
    for (NSString *interface in array) {
        info = CFBridgingRelease(CNCopyCurrentNetworkInfo((CFStringRef)interface));
        if (info &&[info count]) {
            break;
        }
    }
    return info[@"BSSID"];
}

(听雨阁)
2019-01-08 03:51:26 weixin_33969116 阅读数 1252

      很多时候我们都需要唯一来确定一台设备,苹果设备本来有个UDID号,可以实现这个目的。在iOS5.0以前,还有一个uniqueIdentifier的API用来获得这个number。不过iOS5之后,这个API废除了。

      一条路不通,我们就换一条路走,于是MAC地址就成了一个不错的选择,苹果没有提供获得MAC地址的API,不过使用sysctl还是可以有点办法的,代码如下:

 

 

#include <sys/types.h>

#include <sys/param.h>

#include <sys/ioctl.h>

#include <sys/socket.h>

#include <net/if.h>

#include <netinet/in.h>

#include <net/if_dl.h>

#include <sys/sysctl.h>

 

 

 

void GetMACAddress(unsigned char *mac)

{

    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 ;

    }

    

    if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {

        printf("Error: sysctl, take 1/n");

        return ;

    }

    

    if ((buf = malloc(len)) == NULL) {

        printf("Could not allocate memory. error!/n");

        return ;

    }

    

    if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {

        printf("Error: sysctl, take 2");

free(buf);

        return ;

    }

    

    ifm = (struct if_msghdr *)buf;

    sdl = (struct sockaddr_dl *)(ifm + 1);

    ptr = (unsigned char *)LLADDR(sdl);

    memcpy(mac,ptr, 6);

    free(buf);

}


   这段代码可以良好的工作,直到iOS7的出现。不知出于什么原因,苹果对于sysctl和ioctl进行了技术处理,让MAC地址返回02:00:00:00:00:00。官方文档上这样写的“Twolow-level networking APIs that used to return a MAC address now return thefixed value 02:00:00:00:00:00. The APIs in question are sysctl(NET_RT_IFLIST) and ioctl(SIOCGIFCONF). Developers using the value of the MAC address should migrate toidentifiers such as -[UIDeviceidentifierForVendor].This change affects all apps running on iOS 7 

 

 

 

2014-04-15 14:12:44 showhilllee 阅读数 46616

首先说明下,下面两种方法均可以获得手机的mac地址,但是有个限制,是在iOS7以下才可以获得。iOS7以后苹果对于sysctl和ioctl进行了技术处理,MAC地址返回的都是02:00:00:00:00:00。官方文档上这样写的“Twolow-level networking APIs that used to return a MAC address now return thefixed value 02:00:00:00:00:00. The APIs in question are sysctl(NET_RT_IFLIST) and ioctl(SIOCGIFCONF). Developers using the value of the MAC address should migrate toidentifiers such as -[UIDevice identifierForVendor].This change affects all apps running on iOS 7”。

所以在iOS7以后想要获取设备的唯一标示Mac地址已经不行了,只能用其他的代替。

下面说下两种方式:

都需要导入几个头文件

#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>

方法1:

// Return the local MAC addy
// Courtesy of FreeBSD hackers email list
// Accidentally munged during previous update. Fixed thanks to mlamb.
- (NSString *) macaddress
{
    
    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)];
    
//    NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
    
    NSLog(@"outString:%@", outstring);
    
    free(buf);
    
    return [outstring uppercaseString];
}

源自http://blog.csdn.net/showhilllee

方法2:

- (NSString *)getMacAddress
{
    int                 mgmtInfoBase[6];
    char                *msgBuffer = NULL;
    size_t              length;
    unsigned char       macAddress[6];
    struct if_msghdr    *interfaceMsgStruct;
    struct sockaddr_dl  *socketStruct;
    NSString            *errorFlag = NULL;
    
    // Setup the management Information Base (mib)
    mgmtInfoBase[0] = CTL_NET;        // Request network subsystem
    mgmtInfoBase[1] = AF_ROUTE;       // Routing table info
    mgmtInfoBase[2] = 0;
    mgmtInfoBase[3] = AF_LINK;        // Request link layer information
    mgmtInfoBase[4] = NET_RT_IFLIST;  // Request all configured interfaces
    
    // With all configured interfaces requested, get handle index
    if ((mgmtInfoBase[5] = if_nametoindex("en0")) == 0)
        errorFlag = @"if_nametoindex failure";
    else
    {
        // Get the size of the data available (store in len)
        if (sysctl(mgmtInfoBase, 6, NULL, &length, NULL, 0) < 0)
            errorFlag = @"sysctl mgmtInfoBase failure";
        else
        {
            // Alloc memory based on above call
            if ((msgBuffer = malloc(length)) == NULL)
                errorFlag = @"buffer allocation failure";
            else
            {
                // Get system information, store in buffer
                if (sysctl(mgmtInfoBase, 6, msgBuffer, &length, NULL, 0) < 0)
                    errorFlag = @"sysctl msgBuffer failure";
            }
        }
    }
    
    // Befor going any further...
    if (errorFlag != NULL)
    {
        NSLog(@"Error: %@", errorFlag);
        return errorFlag;
    }
    
    // Map msgbuffer to interface message structure
    interfaceMsgStruct = (struct if_msghdr *) msgBuffer;
    
    // Map to link-level socket structure
    socketStruct = (struct sockaddr_dl *) (interfaceMsgStruct + 1);
    
    // Copy link layer address data in socket structure to an array
    memcpy(&macAddress, socketStruct->sdl_data + socketStruct->sdl_nlen, 6);
    
    // Read from char array into a string object, into traditional Mac address format
    NSString *macAddressString = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x",
                                  macAddress[0], macAddress[1], macAddress[2],
                                  macAddress[3], macAddress[4], macAddress[5]];
    NSLog(@"Mac Address: %@", macAddressString);
    
    // Release the buffer memory
    free(msgBuffer);
    
    return macAddressString;
}