| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/apps/platform_apps/api/music_manager_private/device_id.h" |
| |
| #include <stdint.h> |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/stl_util.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_util.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "crypto/hmac.h" |
| |
| namespace chrome_apps { |
| namespace api { |
| |
| namespace { |
| |
| // Compute HMAC-SHA256(|key|, |text|) as a string. |
| bool ComputeHmacSha256(const std::string& key, |
| const std::string& text, |
| std::string* signature_return) { |
| crypto::HMAC hmac(crypto::HMAC::SHA256); |
| const size_t digest_length = hmac.DigestLength(); |
| std::vector<uint8_t> digest(digest_length); |
| bool result = hmac.Init(key) && hmac.Sign(text, &digest[0], digest.size()); |
| if (result) { |
| *signature_return = |
| base::ToLowerASCII(base::HexEncode(digest.data(), digest.size())); |
| } |
| return result; |
| } |
| |
| void GetRawDeviceIdCallback(const std::string& extension_id, |
| const DeviceId::IdCallback& callback, |
| const std::string& raw_device_id) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| |
| if (raw_device_id.empty()) { |
| callback.Run(""); |
| return; |
| } |
| |
| std::string device_id; |
| if (!ComputeHmacSha256(raw_device_id, extension_id, &device_id)) { |
| DLOG(ERROR) << "Error while computing HMAC-SHA256 of device id."; |
| callback.Run(""); |
| return; |
| } |
| callback.Run(device_id); |
| } |
| |
| bool IsValidMacAddressImpl(const void* bytes, size_t size) { |
| const size_t MAC_LENGTH = 6; |
| const size_t OUI_LENGTH = 3; |
| struct InvalidMacEntry { |
| size_t size; |
| unsigned char address[MAC_LENGTH]; |
| }; |
| |
| // VPN, virtualization, tethering, bluetooth, etc. |
| static InvalidMacEntry invalidAddresses[] = { |
| // Empty address |
| {MAC_LENGTH, {0, 0, 0, 0, 0, 0}}, |
| // VMware |
| {OUI_LENGTH, {0x00, 0x50, 0x56}}, |
| {OUI_LENGTH, {0x00, 0x05, 0x69}}, |
| {OUI_LENGTH, {0x00, 0x0c, 0x29}}, |
| {OUI_LENGTH, {0x00, 0x1c, 0x14}}, |
| // VirtualBox |
| {OUI_LENGTH, {0x08, 0x00, 0x27}}, |
| // PdaNet |
| {MAC_LENGTH, {0x00, 0x26, 0x37, 0xbd, 0x39, 0x42}}, |
| // Cisco AnyConnect VPN |
| {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x7a, 0x00}}, |
| // Marvell sometimes uses this as a dummy address |
| {MAC_LENGTH, {0x00, 0x11, 0x22, 0x33, 0x44, 0x55}}, |
| // Apple uses this across machines for Bluetooth ethernet adapters. |
| {MAC_LENGTH - 1, {0x65, 0x90, 0x07, 0x42, 0xf1}}, |
| // Juniper uses this for their Virtual Adapter, the other 4 bytes are |
| // reassigned at every boot. 00-ff-xx is not assigned to anyone. |
| {2, {0x00, 0xff}}, |
| // T-Mobile Wireless Ethernet |
| {MAC_LENGTH, {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00}}, |
| // Generic Bluetooth device |
| {MAC_LENGTH, {0x00, 0x15, 0x83, 0x3d, 0x0a, 0x57}}, |
| // RAS Async Adapter |
| {MAC_LENGTH, {0x20, 0x41, 0x53, 0x59, 0x4e, 0xff}}, |
| // Qualcomm USB ethernet adapter |
| {MAC_LENGTH, {0x00, 0xa0, 0xc6, 0x00, 0x00, 0x00}}, |
| // Windows VPN |
| {MAC_LENGTH, {0x00, 0x53, 0x45, 0x00, 0x00, 0x00}}, |
| // Bluetooth |
| {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x08, 0x30}}, |
| {MAC_LENGTH, {0x00, 0x1b, 0x10, 0x00, 0x2a, 0xec}}, |
| {MAC_LENGTH, {0x00, 0x15, 0x83, 0x15, 0xa3, 0x10}}, |
| {MAC_LENGTH, {0x00, 0x15, 0x83, 0x07, 0xC6, 0x5A}}, |
| {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x02, 0x00}}, |
| {MAC_LENGTH, {0x00, 0x1f, 0x81, 0x00, 0x02, 0xdd}}, |
| // Ceton TV tuner |
| {MAC_LENGTH, {0x00, 0x22, 0x2c, 0xff, 0xff, 0xff}}, |
| // Check Point VPN |
| {MAC_LENGTH, {0x54, 0x55, 0x43, 0x44, 0x52, 0x09}}, |
| {MAC_LENGTH, {0x54, 0xEF, 0x14, 0x71, 0xE4, 0x0E}}, |
| {MAC_LENGTH, {0x54, 0xBA, 0xC6, 0xFF, 0x74, 0x10}}, |
| // Cisco VPN |
| {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x7a, 0x00}}, |
| // Cisco VPN |
| {MAC_LENGTH, {0x00, 0x05, 0x9a, 0x3c, 0x78, 0x00}}, |
| // Intel USB cell modem |
| {MAC_LENGTH, {0x00, 0x1e, 0x10, 0x1f, 0x00, 0x01}}, |
| // Microsoft tethering |
| {MAC_LENGTH, {0x80, 0x00, 0x60, 0x0f, 0xe8, 0x00}}, |
| // Nortel VPN |
| {MAC_LENGTH, {0x44, 0x45, 0x53, 0x54, 0x42, 0x00}}, |
| // AEP VPN |
| {MAC_LENGTH, {0x00, 0x30, 0x70, 0x00, 0x00, 0x01}}, |
| // Positive VPN |
| {MAC_LENGTH, {0x00, 0x02, 0x03, 0x04, 0x05, 0x06}}, |
| // Bluetooth |
| {MAC_LENGTH, {0x00, 0x15, 0x83, 0x0B, 0x13, 0xC0}}, |
| // Kerio Virtual Network Adapter |
| {MAC_LENGTH, {0x44, 0x45, 0x53, 0x54, 0x4f, 0x53}}, |
| // Sierra Wireless cell modems. |
| {OUI_LENGTH, {0x00, 0xA0, 0xD5}}, |
| // FRITZ!web DSL |
| {MAC_LENGTH, {0x00, 0x04, 0x0E, 0xFF, 0xFF, 0xFF}}, |
| // VirtualPC |
| {MAC_LENGTH, {0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}, |
| // Bluetooth |
| {MAC_LENGTH, {0x00, 0x1F, 0x81, 0x00, 0x01, 0x00}}, |
| {MAC_LENGTH, {0x00, 0x30, 0x91, 0x10, 0x00, 0x26}}, |
| {MAC_LENGTH, {0x00, 0x25, 0x00, 0x5A, 0xC3, 0xD0}}, |
| {MAC_LENGTH, {0x00, 0x15, 0x83, 0x0C, 0xBF, 0xEB}}, |
| // Huawei cell modem |
| {MAC_LENGTH, {0x58, 0x2C, 0x80, 0x13, 0x92, 0x63}}, |
| // Fortinet VPN |
| {OUI_LENGTH, {0x00, 0x09, 0x0F}}, |
| // Realtek |
| {MAC_LENGTH, {0x00, 0x00, 0x00, 0x00, 0x00, 0x30}}, |
| // Other rare dupes. |
| {MAC_LENGTH, {0x00, 0x11, 0xf5, 0x0d, 0x8a, 0xe8}}, // Atheros |
| {MAC_LENGTH, {0x00, 0x20, 0x07, 0x01, 0x16, 0x06}}, // Atheros |
| {MAC_LENGTH, {0x0d, 0x0b, 0x00, 0x00, 0xe0, 0x00}}, // Atheros |
| {MAC_LENGTH, {0x90, 0x4c, 0xe5, 0x0b, 0xc8, 0x8e}}, // Atheros |
| {MAC_LENGTH, {0x00, 0x1c, 0x23, 0x38, 0x49, 0xa4}}, // Broadcom |
| {MAC_LENGTH, {0x00, 0x12, 0x3f, 0x82, 0x7c, 0x32}}, // Broadcom |
| {MAC_LENGTH, {0x00, 0x11, 0x11, 0x32, 0xc3, 0x77}}, // Broadcom |
| {MAC_LENGTH, {0x00, 0x24, 0xd6, 0xae, 0x3e, 0x39}}, // Microsoft |
| {MAC_LENGTH, {0x00, 0x0f, 0xb0, 0x3a, 0xb4, 0x80}}, // Realtek |
| {MAC_LENGTH, {0x08, 0x10, 0x74, 0xa1, 0xda, 0x1b}}, // Realtek |
| {MAC_LENGTH, {0x00, 0x21, 0x9b, 0x2a, 0x0a, 0x9c}}, // Realtek |
| }; |
| |
| if (size != MAC_LENGTH) { |
| return false; |
| } |
| |
| if (static_cast<const unsigned char*>(bytes)[0] & 0x02) { |
| // Locally administered. |
| return false; |
| } |
| |
| for (size_t i = 0; i < base::size(invalidAddresses); ++i) { |
| size_t count = invalidAddresses[i].size; |
| if (memcmp(invalidAddresses[i].address, bytes, count) == 0) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } // namespace |
| |
| // static |
| void DeviceId::GetDeviceId(const std::string& extension_id, |
| const IdCallback& callback) { |
| DCHECK_CURRENTLY_ON(content::BrowserThread::UI); |
| CHECK(!extension_id.empty()); |
| |
| // Forward call to platform specific implementation, then compute the HMAC |
| // in the callback. |
| GetRawDeviceId(base::Bind(&GetRawDeviceIdCallback, extension_id, callback)); |
| } |
| |
| // static |
| bool DeviceId::IsValidMacAddress(const void* bytes, size_t size) { |
| return IsValidMacAddressImpl(bytes, size); |
| } |
| |
| } // namespace api |
| } // namespace chrome_apps |
