Function for obtaining the mac address of an ios Mobile Phone

Recently developed ios project, the number of active mobile phones of the app to be sent to the server. Obtain the unique identifier UUID or MAC address of the mobile phone. The MAC address is obtained because uuid cannot be obtained after IOS5. The code below is highly reusable and can be used as an important reference.

 

# 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 ("cocould 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)];

Free (buf); www.2cto.com

Return [outstring uppercaseString];

}