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  • ios Mac 地址获取

    //mac address
    #include <sys/socket.h> // Per msqr
    #include <sys/sysctl.h>
    #include <net/if.h>
    #include <net/if_dl.h>
    
    
    
    
    //mac address
    // Return the local MAC addy
    // Courtesy of FreeBSD hackers email list
    // Accidentally munged during previous update. Fixed thanks to erica sadun & 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
    ");
            return NULL;
        }
        
        if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
            printf("Error: sysctl, take 1
    ");
            return NULL;
        }
        
        if ((buf = malloc(len)) == NULL) {
            printf("Could not allocate memory. error!
    ");
            return NULL;
        }
        
        if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
            printf("Error: sysctl, take 2");
            free(buf);
            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)];
        free(buf);
        
        return outstring;
    }
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  • 原文地址:https://www.cnblogs.com/qingjoin/p/3227550.html
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