components/user_prefs/tracked/device_id_mac.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/user_prefs/tracked/device_id.h"
   6
   7 #include <IOKit/IOKitLib.h>
   8
   9 #include "base/mac/foundation_util.h"
  10 #include "base/mac/scoped_cftyperef.h"
  11 #include "base/mac/scoped_ioobject.h"
  12 #include "base/strings/sys_string_conversions.h"
  13
  14 MachineIdStatus GetDeterministicMachineSpecificId(std::string* machine_id) {
  15   base::mac::ScopedIOObject<io_service_t> platform_expert(
  16       IOServiceGetMatchingService(kIOMasterPortDefault,
  17                                   IOServiceMatching("IOPlatformExpertDevice")));
  18   if (!platform_expert.get())
  19     return MachineIdStatus::FAILURE;
  20
  21   base::ScopedCFTypeRef<CFTypeRef> uuid(IORegistryEntryCreateCFProperty(
  22       platform_expert, CFSTR(kIOPlatformUUIDKey), kCFAllocatorDefault, 0));
  23   if (!uuid.get())
  24     return MachineIdStatus::FAILURE;
  25
  26   CFStringRef uuid_string = base::mac::CFCast<CFStringRef>(uuid);
  27   if (!uuid_string)
  28     return MachineIdStatus::FAILURE;
  29
  30   *machine_id = base::SysCFStringRefToUTF8(uuid_string);
  31   return MachineIdStatus::SUCCESS;
  32 }