keychain/ot/OTDeviceInformationAdapter.m

   1 #import "OTDeviceInformationAdapter.h"
   2 #import "keychain/ckks/CKKS.h"
   3
   4 #include <SystemConfiguration/SystemConfiguration.h>
   5 #import <Security/SecInternalReleasePriv.h>
   6
   7 #if TARGET_OS_OSX
   8 #include <sys/sysctl.h>
   9 #include <IOKit/IOKitLib.h>
  10 #else
  11 #import <sys/utsname.h>
  12 #include <MobileGestalt.h>
  13 #endif
  14
  15 @implementation OTDeviceInformationActualAdapter
  16
  17 - (NSString*)modelID
  18 {
  19     static NSString *hwModel = nil;
  20     static dispatch_once_t onceToken;
  21     dispatch_once(&onceToken, ^{
  22 #if TARGET_OS_SIMULATOR
  23         // Asking for a real value in the simulator gives the results for the underlying mac. Not particularly useful.
  24         hwModel = [NSString stringWithFormat:@"%s", getenv("SIMULATOR_MODEL_IDENTIFIER")];
  25 #elif TARGET_OS_OSX
  26         size_t size;
  27         sysctlbyname("hw.model", NULL, &size, NULL, 0);
  28         char *sysctlString = malloc(size);
  29         sysctlbyname("hw.model", sysctlString, &size, NULL, 0);
  30         hwModel = [[NSString alloc] initWithUTF8String:sysctlString];
  31         free(sysctlString);
  32
  33         // macOS running virtualized sometimes has new and unknown model IDs.
  34         // So, if we don't recognize the model ID, return something more useful.
  35         if(!([hwModel hasPrefix:@"iMac"] ||
  36              [hwModel hasPrefix:@"Mac"])) {
  37             hwModel = [NSString stringWithFormat:@"MacUnknown-%@", hwModel];
  38         }
  39 #else
  40         struct utsname systemInfo;
  41         uname(&systemInfo);
  42
  43         hwModel = [NSString stringWithCString:systemInfo.machine
  44                                      encoding:NSUTF8StringEncoding];
  45 #endif
  46     });
  47     return hwModel;
  48 }
  49
  50 - (NSString* _Nullable)deviceName
  51 {
  52     if (SecIsInternalRelease()) {
  53         NSString *deviceName = CFBridgingRelease(SCDynamicStoreCopyComputerName(NULL, NULL));
  54         return deviceName;
  55     } else {
  56         return nil;
  57     }
  58 }
  59
  60 - (NSString*)osVersion
  61 {
  62     return SecCKKSHostOSVersion();
  63 }
  64
  65 #if TARGET_OS_IPHONE
  66
  67 #include <MobileGestalt.h>
  68
  69 - (NSString*)serialNumber
  70 {
  71     int mgError = kMGNoError;
  72     NSString *serialNumber = CFBridgingRelease(MGCopyAnswerWithError(kMGQSerialNumber, NULL, &mgError));
  73     if (![serialNumber isKindOfClass:[NSString class]]) {
  74         serialNumber = nil;
  75         secnotice("octagon", "failed getting serial number: %d", mgError);
  76     }
  77     return serialNumber;
  78 }
  79
  80 #else
  81
  82 - (NSString*)serialNumber
  83 {
  84     io_service_t platformExpert = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
  85     if (platformExpert == MACH_PORT_NULL) {
  86         secnotice("octagon", "failed getting serial number (platform IOPlatformExpertDevice)");
  87         return nil;
  88     }
  89     NSString *serialNumber = CFBridgingRelease(IORegistryEntryCreateCFProperty(platformExpert, CFSTR(kIOPlatformSerialNumberKey), kCFAllocatorDefault, 0));
  90     if (![serialNumber isKindOfClass:[NSString class]]) {
  91         serialNumber = nil;
  92         secnotice("octagon", "failed getting serial number (IORegistryEntry)");
  93     }
  94     IOObjectRelease(platformExpert);
  95     return serialNumber;
  96 }
  97
  98 #endif
  99
 100 @end
 101