chrome/browser/extensions/api/music_manager_private/device_id.cc

   1 // Copyright 2013 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 "chrome/browser/extensions/api/music_manager_private/device_id.h"
   6
   7 #include "base/bind.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/strings/string_util.h"
  10 #include "content/public/browser/browser_thread.h"
  11 #include "crypto/hmac.h"
  12
  13 namespace {
  14
  15 using extensions::api::DeviceId;
  16
  17 // Compute HMAC-SHA256(|key|, |text|) as a string.
  18 bool ComputeHmacSha256(const std::string& key,
  19                        const std::string& text,
  20                        std::string* signature_return) {
  21   crypto::HMAC hmac(crypto::HMAC::SHA256);
  22   const size_t digest_length = hmac.DigestLength();
  23   std::vector<uint8> digest(digest_length);
  24   bool result = hmac.Init(key) &&
  25       hmac.Sign(text, &digest[0], digest.size());
  26   if (result) {
  27     *signature_return = base::ToLowerASCII(
  28         base::HexEncode(digest.data(), digest.size()));
  29   }
  30   return result;
  31 }
  32
  33 void GetRawDeviceIdCallback(const std::string& extension_id,
  34                             const DeviceId::IdCallback& callback,
  35                             const std::string& raw_device_id) {
  36   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  37
  38   if (raw_device_id.empty()) {
  39     callback.Run("");
  40     return;
  41   }
  42
  43   std::string device_id;
  44   if (!ComputeHmacSha256(raw_device_id, extension_id, &device_id)) {
  45     DLOG(ERROR) << "Error while computing HMAC-SHA256 of device id.";
  46     callback.Run("");
  47     return;
  48   }
  49   callback.Run(device_id);
  50 }
  51
  52 bool IsValidMacAddressImpl(const void* bytes, size_t size) {
  53   const size_t MAC_LENGTH = 6;
  54   const size_t OUI_LENGTH = 3;
  55   struct InvalidMacEntry {
  56       size_t size;
  57       unsigned char address[MAC_LENGTH];
  58   };
  59
  60   // VPN, virtualization, tethering, bluetooth, etc.
  61   static InvalidMacEntry invalidAddresses[] = {
  62     // Empty address
  63     {MAC_LENGTH, {0, 0, 0, 0, 0, 0}},
  64     // VMware
  65     {OUI_LENGTH, {0x00, 0x50, 0x56}},
  66     {OUI_LENGTH, {0x00, 0x05, 0x69}},
  67     {OUI_LENGTH, {0x00, 0x0c, 0x29}},
  68     {OUI_LENGTH, {0x00, 0x1c, 0x14}},
  69     // VirtualBox
  70     {OUI_LENGTH, {0x08, 0x00, 0x27}},
  71     // PdaNet
  72     {MAC_LENGTH, {0x00, 0x26, 0x37, 0xbd, 0x39, 0x42}},
  73     // Cisco AnyConnect VPN
  74     {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x7a, 0x00}},
  75     // Marvell sometimes uses this as a dummy address
  76     {MAC_LENGTH, {0x00, 0x11, 0x22, 0x33, 0x44, 0x55}},
  77     // Apple uses this across machines for Bluetooth ethernet adapters.
  78     {MAC_LENGTH-1, {0x65, 0x90, 0x07, 0x42, 0xf1}},
  79     // Juniper uses this for their Virtual Adapter, the other 4 bytes are
  80     // reassigned at every boot. 00-ff-xx is not assigned to anyone.
  81     {2, {0x00, 0xff}},
  82     // T-Mobile Wireless Ethernet
  83     {MAC_LENGTH, {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00}},
  84     // Generic Bluetooth device
  85     {MAC_LENGTH, {0x00, 0x15, 0x83, 0x3d, 0x0a, 0x57}},
  86     // RAS Async Adapter
  87     {MAC_LENGTH, {0x20, 0x41, 0x53, 0x59, 0x4e, 0xff}},
  88     // Qualcomm USB ethernet adapter
  89     {MAC_LENGTH, {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00}},
  90     // Windows VPN
  91     {MAC_LENGTH, {0x00, 0x53, 0x45, 0x00, 0x00, 0x00}},
  92     // Bluetooth
  93     {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x08, 0x30}},
  94     {MAC_LENGTH, {0x00, 0x1b, 0x10, 0x00, 0x2a, 0xec}},
  95     {MAC_LENGTH, {0x00, 0x15, 0x83, 0x15, 0xa3, 0x10}},
  96     {MAC_LENGTH, {0x00, 0x15, 0x83, 0x07, 0xC6, 0x5A}},
  97     {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x02, 0x00}},
  98     {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x02, 0xdd}},
  99     // Ceton TV tuner
 100     {MAC_LENGTH, {0x00, 0x22, 0x2c, 0xff, 0xff, 0xff}},
 101     // Check Point VPN
 102     {MAC_LENGTH, {0x54, 0x55, 0x43, 0x44, 0x52, 0x09}},
 103     {MAC_LENGTH, {0x54, 0xEF, 0x14, 0x71, 0xE4, 0x0E}},
 104     {MAC_LENGTH, {0x54, 0xBA, 0xC6, 0xFF, 0x74, 0x10}},
 105     // Cisco VPN
 106     {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x7a, 0x00}},
 107     // Cisco VPN
 108     {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x78, 0x00}},
 109     // Intel USB cell modem
 110     {MAC_LENGTH, {0x00, 0x1e, 0x10, 0x1f, 0x00, 0x01}},
 111     // Microsoft tethering
 112     {MAC_LENGTH, {0x80, 0x00, 0x60, 0x0f, 0xe8, 0x00}},
 113     // Nortel VPN
 114     {MAC_LENGTH, {0x44, 0x45, 0x53, 0x54, 0x42, 0x00}},
 115     // AEP VPN
 116     {MAC_LENGTH, {0x00, 0x30, 0x70, 0x00, 0x00, 0x01}},
 117     // Positive VPN
 118     {MAC_LENGTH, {0x00, 0x02, 0x03, 0x04, 0x05, 0x06}},
 119     // Bluetooth
 120     {MAC_LENGTH, {0x00, 0x15, 0x83, 0x0B, 0x13, 0xC0}},
 121     // Kerio Virtual Network Adapter
 122     {MAC_LENGTH, {0x44, 0x45, 0x53, 0x54, 0x4f, 0x53}},
 123     // Sierra Wireless cell modems.
 124     {OUI_LENGTH, {0x00, 0xA0, 0xD5}},
 125     // FRITZ!web DSL
 126     {MAC_LENGTH, {0x00, 0x04, 0x0E, 0xFF, 0xFF, 0xFF}},
 127     // VirtualPC
 128     {MAC_LENGTH, {0x00, 0x00, 0x00, 0x00, 0x00, 0x01}},
 129     // Bluetooth
 130     {MAC_LENGTH, {0x00, 0x1F, 0x81, 0x00, 0x01, 0x00}},
 131     {MAC_LENGTH, {0x00, 0x30, 0x91, 0x10, 0x00, 0x26}},
 132     {MAC_LENGTH, {0x00, 0x25, 0x00, 0x5A, 0xC3, 0xD0}},
 133     {MAC_LENGTH, {0x00, 0x15, 0x83, 0x0C, 0xBF, 0xEB}},
 134     // Huawei cell modem
 135     {MAC_LENGTH, {0x58, 0x2C, 0x80, 0x13, 0x92, 0x63}},
 136     // Fortinet VPN
 137     {OUI_LENGTH, {0x00, 0x09, 0x0F}},
 138     // Realtek
 139     {MAC_LENGTH, {0x00, 0x00, 0x00, 0x00, 0x00, 0x30}},
 140     // Other rare dupes.
 141     {MAC_LENGTH, {0x00, 0x11, 0xf5, 0x0d, 0x8a, 0xe8}}, // Atheros
 142     {MAC_LENGTH, {0x00, 0x20, 0x07, 0x01, 0x16, 0x06}}, // Atheros
 143     {MAC_LENGTH, {0x0d, 0x0b, 0x00, 0x00, 0xe0, 0x00}}, // Atheros
 144     {MAC_LENGTH, {0x90, 0x4c, 0xe5, 0x0b, 0xc8, 0x8e}}, // Atheros
 145     {MAC_LENGTH, {0x00, 0x1c, 0x23, 0x38, 0x49, 0xa4}}, // Broadcom
 146     {MAC_LENGTH, {0x00, 0x12, 0x3f, 0x82, 0x7c, 0x32}}, // Broadcom
 147     {MAC_LENGTH, {0x00, 0x11, 0x11, 0x32, 0xc3, 0x77}}, // Broadcom
 148     {MAC_LENGTH, {0x00, 0x24, 0xd6, 0xae, 0x3e, 0x39}}, // Microsoft
 149     {MAC_LENGTH, {0x00, 0x0f, 0xb0, 0x3a, 0xb4, 0x80}}, // Realtek
 150     {MAC_LENGTH, {0x08, 0x10, 0x74, 0xa1, 0xda, 0x1b}}, // Realtek
 151     {MAC_LENGTH, {0x00, 0x21, 0x9b, 0x2a, 0x0a, 0x9c}}, // Realtek
 152   };
 153
 154   if (size != MAC_LENGTH) {
 155     return false;
 156   }
 157
 158   if (static_cast<const unsigned char *>(bytes)[0] & 0x02) {
 159     // Locally administered.
 160     return false;
 161   }
 162
 163   for (size_t i = 0; i < arraysize(invalidAddresses); ++i) {
 164     size_t count = invalidAddresses[i].size;
 165     if (memcmp(invalidAddresses[i].address, bytes, count) == 0) {
 166         return false;
 167     }
 168   }
 169   return true;
 170 }
 171
 172 }  // namespace
 173
 174 namespace extensions {
 175 namespace api {
 176
 177 // static
 178 void DeviceId::GetDeviceId(const std::string& extension_id,
 179                            const IdCallback& callback) {
 180   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 181   CHECK(!extension_id.empty());
 182
 183   // Forward call to platform specific implementation, then compute the HMAC
 184   // in the callback.
 185   GetRawDeviceId(base::Bind(&GetRawDeviceIdCallback, extension_id, callback));
 186 }
 187
 188 // static
 189 bool DeviceId::IsValidMacAddress(const void* bytes, size_t size) {
 190   return IsValidMacAddressImpl(bytes, size);
 191 }
 192
 193 }  // namespace api
 194 }  // namespace extensions