ios 获取mac 地址-白红宇

ios 获取mac 地址

阅读量：5996 次

发布时间：2019-06-20

本文共 1359 字，大约阅读时间需要 4 分钟。

#include 
     
        #include 
      
       #include 
       
        #include 
        
         - (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];    }