UIDevice-with-UniqueIdentifier-for-iOS-5
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//// UIDevice(Identifier).m// UIDeviceAddition//// Created by Georg Kitz on 20.08.11.// Copyright 2011 Aurora Apps. All rights reserved.//#import "UIDevice+IdentifierAddition.h"#import "NSString+MD5Addition.h"#include <sys/socket.h> // Per msqr#include <sys/sysctl.h>#include <net/if.h>#include <net/if_dl.h>@interface UIDevice(Private)- (NSString *) macaddress;@end@implementation UIDevice (IdentifierAddition)////////////////////////////////////////////////////////////////////////////////#pragma mark -#pragma mark Private Methods// 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\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)]; free(buf); return outstring;}////////////////////////////////////////////////////////////////////////////////#pragma mark -#pragma mark Public Methods- (NSString *) uniqueDeviceIdentifier{ NSString *macaddress = [[UIDevice currentDevice] macaddress]; NSString *bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier]; NSString *stringToHash = [NSString stringWithFormat:@"%@%@",macaddress,bundleIdentifier]; NSString *uniqueIdentifier = [stringToHash stringFromMD5]; return uniqueIdentifier;}- (NSString *) uniqueGlobalDeviceIdentifier{ NSString *macaddress = [[UIDevice currentDevice] macaddress]; NSString *uniqueIdentifier = [macaddress stringFromMD5]; return uniqueIdentifier;}@end