iOSで デバイスのシリアル番号を取得する

本記事は「デバイスのシリアル番号を取得する - iOSアプリ開発の逆引き辞典」に転記しました。

ちょっとシリアル番号が取得出来るかどうかを調査してみました。結論から言うとシリアル番号を取得する事は出来ましたが、これがundocumentな使い方かどうかが判らないや。

//
//  UIDevice+Softbuild.h
//  libraryreference
//
//  Created by Wada Kenji on 10/12/04.
//  Copyright 2010 Softbuild. All rights reserved.
//

#import <UIKit/UIDevice.h>

@interface UIDevice (Softbuild)

@property (nonatomic, readonly) NSString *serialNumber;

@end

//
//  UIDevice+Softbuild.m
//  libraryreference
//
//  Created by Wada Kenji on 10/12/04.
//  Copyright 2010 Softbuild. All rights reserved.
//

#import "UIDevice+Softbuild.h"
#import <dlfcn.h>
#import <mach/port.h>
#import <mach/kern_return.h>

@implementation UIDevice (Softbuild)

- (NSString *) serialNumber
{
	NSString *serialNumber = nil;
	
	void *IOKit = dlopen("/System/Library/Frameworks/IOKit.framework/IOKit", RTLD_NOW);
	if (IOKit)
	{
		mach_port_t *kIOMasterPortDefault = dlsym(IOKit, "kIOMasterPortDefault");
		CFMutableDictionaryRef (*IOServiceMatching)(const char *name) = dlsym(IOKit, "IOServiceMatching");
		mach_port_t (*IOServiceGetMatchingService)(mach_port_t masterPort, CFDictionaryRef matching) = dlsym(IOKit, "IOServiceGetMatchingService");
		CFTypeRef (*IORegistryEntryCreateCFProperty)(mach_port_t entry, CFStringRef key, CFAllocatorRef allocator, uint32_t options) = dlsym(IOKit, "IORegistryEntryCreateCFProperty");
		kern_return_t (*IOObjectRelease)(mach_port_t object) = dlsym(IOKit, "IOObjectRelease");
		
		if (kIOMasterPortDefault && IOServiceGetMatchingService && IORegistryEntryCreateCFProperty && IOObjectRelease)
		{
			mach_port_t platformExpertDevice = IOServiceGetMatchingService(*kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
			if (platformExpertDevice)
			{
				CFTypeRef platformSerialNumber = IORegistryEntryCreateCFProperty(platformExpertDevice, CFSTR("IOPlatformSerialNumber"), kCFAllocatorDefault, 0);
				if (CFGetTypeID(platformSerialNumber) == CFStringGetTypeID())
				{
					serialNumber = [NSString stringWithString:(NSString*)platformSerialNumber];
					CFRelease(platformSerialNumber);
				}
				IOObjectRelease(platformExpertDevice);
			}
		}
		dlclose(IOKit);
	}
	
	return serialNumber;
}

@end