Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 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 <CoreFoundation/CoreFoundation.h> |
| 6 | #include <IOKit/IOKitLib.h> |
Torne (Richard Coles) | c2e0dbd | 2013-05-09 18:35:53 +0100 | [diff] [blame] | 7 | #include <IOKit/network/IOEthernetController.h> |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 8 | #include <IOKit/network/IOEthernetInterface.h> |
| 9 | #include <IOKit/network/IONetworkInterface.h> |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 10 | |
| 11 | #include "base/logging.h" |
| 12 | #include "base/mac/foundation_util.h" |
| 13 | #include "base/mac/scoped_cftyperef.h" |
| 14 | #include "base/mac/scoped_ioobject.h" |
Torne (Richard Coles) | 868fa2f | 2013-06-11 10:57:03 +0100 | [diff] [blame] | 15 | #include "base/strings/string16.h" |
| 16 | #include "base/strings/stringprintf.h" |
Torne (Richard Coles) | c2e0dbd | 2013-05-09 18:35:53 +0100 | [diff] [blame] | 17 | #include "base/strings/sys_string_conversions.h" |
Torne (Richard Coles) | 868fa2f | 2013-06-11 10:57:03 +0100 | [diff] [blame] | 18 | #include "base/strings/utf_string_conversions.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 19 | |
| 20 | namespace rlz_lib { |
| 21 | |
| 22 | namespace { |
| 23 | |
| 24 | // See http://developer.apple.com/library/mac/#technotes/tn1103/_index.html |
| 25 | |
| 26 | // The caller is responsible for freeing |matching_services|. |
| 27 | bool FindEthernetInterfaces(io_iterator_t* matching_services) { |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame^] | 28 | base::ScopedCFTypeRef<CFMutableDictionaryRef> matching_dict( |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 29 | IOServiceMatching(kIOEthernetInterfaceClass)); |
| 30 | if (!matching_dict) |
| 31 | return false; |
| 32 | |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame^] | 33 | base::ScopedCFTypeRef<CFMutableDictionaryRef> primary_interface( |
| 34 | CFDictionaryCreateMutable(kCFAllocatorDefault, |
| 35 | 0, |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 36 | &kCFTypeDictionaryKeyCallBacks, |
| 37 | &kCFTypeDictionaryValueCallBacks)); |
| 38 | if (!primary_interface) |
| 39 | return false; |
| 40 | |
| 41 | CFDictionarySetValue( |
| 42 | primary_interface, CFSTR(kIOPrimaryInterface), kCFBooleanTrue); |
| 43 | CFDictionarySetValue( |
| 44 | matching_dict, CFSTR(kIOPropertyMatchKey), primary_interface); |
| 45 | |
| 46 | kern_return_t kern_result = IOServiceGetMatchingServices( |
| 47 | kIOMasterPortDefault, matching_dict.release(), matching_services); |
| 48 | |
| 49 | return kern_result == KERN_SUCCESS; |
| 50 | } |
| 51 | |
| 52 | bool GetMACAddressFromIterator(io_iterator_t primary_interface_iterator, |
| 53 | uint8_t* buffer, size_t buffer_size) { |
| 54 | if (buffer_size < kIOEthernetAddressSize) |
| 55 | return false; |
| 56 | |
| 57 | bool success = false; |
| 58 | |
| 59 | bzero(buffer, buffer_size); |
| 60 | base::mac::ScopedIOObject<io_object_t> primary_interface; |
| 61 | while (primary_interface.reset(IOIteratorNext(primary_interface_iterator)), |
| 62 | primary_interface) { |
| 63 | io_object_t primary_interface_parent; |
| 64 | kern_return_t kern_result = IORegistryEntryGetParentEntry( |
| 65 | primary_interface, kIOServicePlane, &primary_interface_parent); |
| 66 | base::mac::ScopedIOObject<io_object_t> primary_interface_parent_deleter( |
| 67 | primary_interface_parent); |
| 68 | success = kern_result == KERN_SUCCESS; |
| 69 | |
| 70 | if (!success) |
| 71 | continue; |
| 72 | |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame^] | 73 | base::ScopedCFTypeRef<CFTypeRef> mac_data( |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 74 | IORegistryEntryCreateCFProperty(primary_interface_parent, |
| 75 | CFSTR(kIOMACAddress), |
| 76 | kCFAllocatorDefault, |
| 77 | 0)); |
| 78 | CFDataRef mac_data_data = base::mac::CFCast<CFDataRef>(mac_data); |
| 79 | if (mac_data_data) { |
| 80 | CFDataGetBytes( |
| 81 | mac_data_data, CFRangeMake(0, kIOEthernetAddressSize), buffer); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return success; |
| 86 | } |
| 87 | |
| 88 | bool GetMacAddress(unsigned char* buffer, size_t size) { |
| 89 | io_iterator_t primary_interface_iterator; |
| 90 | if (!FindEthernetInterfaces(&primary_interface_iterator)) |
| 91 | return false; |
| 92 | bool result = GetMACAddressFromIterator( |
| 93 | primary_interface_iterator, buffer, size); |
| 94 | IOObjectRelease(primary_interface_iterator); |
| 95 | return result; |
| 96 | } |
| 97 | |
| 98 | CFStringRef CopySerialNumber() { |
| 99 | base::mac::ScopedIOObject<io_service_t> expert_device( |
| 100 | IOServiceGetMatchingService(kIOMasterPortDefault, |
| 101 | IOServiceMatching("IOPlatformExpertDevice"))); |
| 102 | if (!expert_device) |
| 103 | return NULL; |
| 104 | |
Ben Murdoch | eb525c5 | 2013-07-10 11:40:50 +0100 | [diff] [blame^] | 105 | base::ScopedCFTypeRef<CFTypeRef> serial_number( |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 106 | IORegistryEntryCreateCFProperty(expert_device, |
| 107 | CFSTR(kIOPlatformSerialNumberKey), |
| 108 | kCFAllocatorDefault, |
| 109 | 0)); |
| 110 | CFStringRef serial_number_cfstring = |
| 111 | base::mac::CFCast<CFStringRef>(serial_number); |
| 112 | if (!serial_number_cfstring) |
| 113 | return NULL; |
| 114 | |
| 115 | ignore_result(serial_number.release()); |
| 116 | return serial_number_cfstring; |
| 117 | } |
| 118 | |
| 119 | } // namespace |
| 120 | |
| 121 | bool GetRawMachineId(string16* data, int* more_data) { |
| 122 | uint8_t mac_address[kIOEthernetAddressSize]; |
| 123 | |
| 124 | data->clear(); |
| 125 | if (GetMacAddress(mac_address, sizeof(mac_address))) { |
| 126 | *data += ASCIIToUTF16(base::StringPrintf("mac:%02x%02x%02x%02x%02x%02x", |
| 127 | mac_address[0], mac_address[1], mac_address[2], |
| 128 | mac_address[3], mac_address[4], mac_address[5])); |
| 129 | } |
| 130 | |
| 131 | // A MAC address is enough to uniquely identify a machine, but it's only 6 |
| 132 | // bytes, 3 of which are manufacturer-determined. To make brute-forcing the |
| 133 | // SHA1 of this harder, also append the system's serial number. |
| 134 | CFStringRef serial = CopySerialNumber(); |
| 135 | if (serial) { |
| 136 | if (!data->empty()) |
| 137 | *data += UTF8ToUTF16(" "); |
| 138 | *data += UTF8ToUTF16("serial:") + base::SysCFStringRefToUTF16(serial); |
| 139 | CFRelease(serial); |
| 140 | } |
| 141 | |
| 142 | // On windows, this is set to the volume id. Since it's not scrambled before |
| 143 | // being sent, just set it to 1. |
| 144 | *more_data = 1; |
| 145 | return true; |
| 146 | } |
| 147 | |
| 148 | } // namespace rlz_lib |