Determine iOS device being used and other device info

HKWUIDeviceHardware.h

//
//  HKWUIDeviceHardware.h
//

#import <Foundation/Foundation.h>

@interface HKWUIDeviceHardware : NSObject 

- (NSString *) platform2;
- (NSString *) platformString;
- (BOOL) isIpadOneOrTwo;
- (BOOL) isSixOrSeven;
- (BOOL) isPlus;
- (NSString *) platformStringFromPlatform;

@end

HKWUIDeviceHardware.m

//
//  HKWUIDeviceHardware.m
//

#import "HKWUIDeviceHardware.h"
#include <sys/sysctl.h>

@interface NSString (HKWPrivateAdditions)
- (BOOL)hkw_contains:(NSString *)needle;
@end


@interface HKWUIDeviceHardware ()

@property (nonatomic, strong) NSString *platform;
@property (nonatomic, strong) NSString *platformString;
@property (nonatomic, assign) BOOL isIpadOneOrTwo;
@property (nonatomic, assign) BOOL isSixOrSeven;
@property (nonatomic, assign) BOOL isPlus;

@end

@implementation HKWUIDeviceHardware

- (instancetype)init {
	self = [super init];
	if (!self)
		return nil;

	_isIpadOneOrTwo = NO;
	_isSixOrSeven = NO;
	_isPlus = NO;

	_platform		= [self platform2];
	_platformString = [self platformStringFromPlatform];

#if !TARGET_IPHONE_SIMULATOR
	if (([_platformString hkw_contains:@"iPhone7"] && ![_platformString hkw_contains:@"Plus"])
			|| ( [_platformString hkw_contains:@"iPhone6"] && ![_platformString hkw_contains:@"Plus"])){
		_isSixOrSeven =  YES;
	}
	if ([_platformString hkw_contains:@"Plus"] ){
		_isPlus = YES;
	}
#endif
	return self;
}

// per https://gist.github.com/Jaybles/1323251#gistcomment-866431 this runs 30% quicker thansysctlbyname
- (NSString *) platform2{
	int mib[] = {CTL_HW, HW_MACHINE};
	size_t len = 0;
	sysctl(mib, 2, NULL, &len, NULL, 0);
	char *machine = malloc(len);
	sysctl(mib, 2, machine, &len, NULL, 0);
	NSString *platform = [NSString stringWithCString:machine encoding:NSASCIIStringEncoding];
	free(machine);
	return platform;
}

- (NSString *) platformStringFromPlatform  {

	if ([_platform hasPrefix:@"iPad2"] || ([_platform hasPrefix:@"iPad1"])) _isIpadOneOrTwo = YES;; // this will return iPadMini too

	// rearranging in order of current popularity for speed
	if ([_platform isEqualToString:@"iPhone9,1"])    return @"iPhone7";
	if ([_platform isEqualToString:@"iPhone9,2"])    return @"iPhone7Plus";
	if ([_platform isEqualToString:@"iPhone9,3"])    return @"iPhone7";
	if ([_platform isEqualToString:@"iPhone9,4"])    return @"iPhone7Plus";
	if ([_platform isEqualToString:@"iPhone7,2"])    return @"iPhone6";
	if ([_platform isEqualToString:@"iPhone7,1"])    return @"iPhone6Plus";
	if ([_platform isEqualToString:@"iPhone8,1"])    return @"iPhone6S";
	if ([_platform isEqualToString:@"iPhone8,2"])    return @"iPhone6SPlus";
	if ([_platform isEqualToString:@"iPhone8,4"])    return @"iPhoneSE";
	if ([_platform isEqualToString:@"iPad4,1"])      return @"iPadAir(WiFi)";
	if ([_platform isEqualToString:@"iPad4,2"])      return @"iPadAir(GSM)";
	if ([_platform isEqualToString:@"iPad4,3"])      return @"iPadAir(CDMA)";
	if ([_platform isEqualToString:@"iPad4,4"])      return @"iPadMinRet(WiFi)";
	if ([_platform isEqualToString:@"iPad4,5"])      return @"iPadMinRet(GSM)";
	if ([_platform isEqualToString:@"iPad4,6"])      return @"iPadMini2";
	if ([_platform isEqualToString:@"iPad4,7"])      return @"iPadMini3";
	if ([_platform isEqualToString:@"iPad4,8"])      return @"iPadMini3";
	if ([_platform isEqualToString:@"iPad4,9"])      return @"iPadMini3";
	if ([_platform isEqualToString:@"iPad5,1"])      return @"iPadMini4";
	if ([_platform isEqualToString:@"iPad5,2"])      return @"iPadMini4";
	if ([_platform isEqualToString:@"iPhone5,1"])    return @"iPhone5(GSM)";
	if ([_platform isEqualToString:@"iPhone5,2"])    return @"iPhone5(CDMA)";
	if ([_platform isEqualToString:@"iPhone5,3"])    return @"iPhone5C(GSM)";
	if ([_platform isEqualToString:@"iPhone5,4"])    return @"iPhone5C(Global)";
	if ([_platform isEqualToString:@"iPhone6,2"])    return @"iPhone5S(Global)";
	if ([_platform isEqualToString:@"iPhone6,1"])    return @"iPhone5S(GSM)";
	if ([_platform isEqualToString:@"iPad5,4"])      return @"iPadAir2";
	if ([_platform isEqualToString:@"iPad5,3"])      return @"iPadAir2(Wifi)";
	if ([_platform isEqualToString:@"iPad6,7"])      return @"iPadPro12.9";
	if ([_platform isEqualToString:@"iPad6,8"])      return @"iPadPro12.9";
	if ([_platform isEqualToString:@"iPad6,3"])      return @"iPadPro9.7";
	if ([_platform isEqualToString:@"iPad6,4"])      return @"iPadPro9.7";
	if ([_platform isEqualToString:@"iPad6,11"])     return @"iPad5(Wi-Fi)";
	if ([_platform isEqualToString:@"iPad6,12"])     return @"iPad5(Cellular)";
	if ([_platform isEqualToString:@"iPhone3,1"])    return @"iPhone4";
	if ([_platform isEqualToString:@"iPhone4,1"])    return @"iPhone4S";
	if ([_platform isEqualToString:@"iPhone2,1"])    return @"iPhone3GS";
	if ([_platform isEqualToString:@"iPad3,1"])      return @"iPad3(WiFi)";
	if ([_platform isEqualToString:@"iPad2,1"])      return @"iPad2(WiFi)";
	if ([_platform isEqualToString:@"iPad2,2"])      return @"iPad2(GSM)";
	if ([_platform isEqualToString:@"iPad2,5"])      return @"iPadMini";
	if ([_platform isEqualToString:@"iPad2,5"])      return @"iPadMini";
	if ([_platform isEqualToString:@"iPad2,6"])      return @"iPadMini(54)";
	if ([_platform isEqualToString:@"iPad2,7"])      return @"iPadMini(55)";
	if ([_platform isEqualToString:@"iPad3,3"])      return @"iPad3(4GVerizon)";
	if ([_platform isEqualToString:@"iPhone1,1"])    return @"iPhone1G";
	if ([_platform isEqualToString:@"iPhone1,2"])    return @"iPhone3G";
	if ([_platform isEqualToString:@"iPhone3,2"])    return @"VerizoniPhone4";
	if ([_platform isEqualToString:@"iPhone3,3"])    return @"VerizoniPhone4";
	if ([_platform isEqualToString:@"iPod1,1"])      return @"iPodTouch1G";
	if ([_platform isEqualToString:@"iPod2,1"])      return @"iPodTouch2G";
	if ([_platform isEqualToString:@"iPod3,1"])      return @"iPodTouch3G";
	if ([_platform isEqualToString:@"iPod4,1"])      return @"iPodTouch4G";
	if ([_platform isEqualToString:@"iPod5,1"])      return @"iPodTouch5G";
	if ([_platform isEqualToString:@"iPod7,1"])      return @"iPodTouch6G";
	if ([_platform isEqualToString:@"iPad1,1"])      return @"iPad";
	if ([_platform isEqualToString:@"iPad2,3"])      return @"iPad2(CDMA)";
	if ([_platform isEqualToString:@"iPad2,4"])      return @"iPad2(32nmWiFi)";
	if ([_platform isEqualToString:@"iPad3,2"])      return @"iPad3(4GATT)";
	if ([_platform isEqualToString:@"iPad3,4"])      return @"iPad4(58)";
	if ([_platform isEqualToString:@"iPad3,5"])      return @"iPad4(59)";
	if ([_platform isEqualToString:@"iPad3,6"])      return @"iPad4(60)";

	// The ever mysterious iFPGA
	if ([_platform isEqualToString:@"iFPGA"])        return @"iFPGA";

	if ([_platform hasSuffix:@"86"] || [_platform isEqual:@"x86_64"]){
		return ([[UIScreen mainScreen] bounds].size.width < 768) ? @"iPhone Simulator" : @"iPad Simulator";
	}

	return _platform;
}

- (NSString *) platformString{
	return _platformString;
}

- (BOOL) isIpadOneOrTwo{
	return _isIpadOneOrTwo;
}

- (BOOL) isSixOrSeven{

#if TARGET_IPHONE_SIMULATOR
	if ([_platformString hkw_contains:@"Simulator"] ){
		char *home = "jibber";
		home = getenv("SIMULATOR_MODEL_IDENTIFIER");
		_platform = [NSString stringWithUTF8String:home];
		_platformString = [self platformStringFromPlatform];
	}

	if (([_platformString hkw_contains:@"iPhone7"] && ![_platformString hkw_contains:@"Plus"])
		|| ( [_platformString hkw_contains:@"iPhone6"] && ![_platformString hkw_contains:@"Plus"])){
		_isSixOrSeven =  YES;
	}
#endif
	return _isSixOrSeven;
}

- (BOOL) isPlus{
#if TARGET_IPHONE_SIMULATOR
	if ([_platformString hkw_contains:@"Simulator"] ){
		char *home = "jibber";
		home = getenv("SIMULATOR_MODEL_IDENTIFIER");
		_platform = [NSString stringWithUTF8String:home];
		_platformString = [self platformStringFromPlatform];
	}

	if ([_platformString hkw_contains:@"Plus"] ){
		_isPlus = YES;;
	}
#endif
	return _isPlus;
}

@end

@implementation NSString (HKWPrivateAdditions)

- (BOOL)hkw_contains:(NSString *)needle{
	return ([self rangeOfString:needle].location != NSNotFound);
}

@end