components/metrics/motherboard.cc

   1 // Copyright 2022 The Chromium Authors
   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/metrics/motherboard.h"
   6
   7 #include <string>
   8 #include <utility>
   9
  10 #include "base/files/file_path.h"
  11 #include "base/files/file_util.h"
  12 #include "base/strings/string_util.h"
  13 #include "build/build_config.h"
  14 #include "third_party/abseil-cpp/absl/types/optional.h"
  15
  16 #if BUILDFLAG(IS_WIN)
  17 #include "base/strings/utf_string_conversions.h"
  18 #include "base/threading/scoped_blocking_call.h"
  19 #include "base/win/scoped_bstr.h"
  20 #include "base/win/scoped_com_initializer.h"
  21 #include "base/win/scoped_variant.h"
  22 #include "base/win/wmi.h"
  23 #endif
  24
  25 namespace metrics {
  26 namespace {
  27
  28 struct MotherboardDetails {
  29   absl::optional<std::string> manufacturer;
  30   absl::optional<std::string> model;
  31   absl::optional<std::string> bios_manufacturer;
  32   absl::optional<std::string> bios_version;
  33   absl::optional<Motherboard::BiosType> bios_type;
  34 };
  35
  36 #if BUILDFLAG(IS_LINUX)
  37 using base::FilePath;
  38 using base::PathExists;
  39 using base::ReadFileToString;
  40 using base::TrimWhitespaceASCII;
  41 using base::TRIM_TRAILING;
  42
  43 MotherboardDetails ReadMotherboardDetails() {
  44   constexpr FilePath::CharType kDmiPath[] = "/sys/devices/virtual/dmi/id";
  45   constexpr FilePath::CharType kEfiPath[] = "/sys/firmware/efi";
  46   const FilePath dmi_path(kDmiPath);
  47   MotherboardDetails details;
  48   std::string temp;
  49   if (ReadFileToString(dmi_path.Append("board_vendor"), &temp)) {
  50     details.manufacturer =
  51         std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
  52   }
  53   if (ReadFileToString(dmi_path.Append("board_name"), &temp)) {
  54     details.model = std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
  55   }
  56   if (ReadFileToString(dmi_path.Append("bios_vendor"), &temp)) {
  57     details.bios_manufacturer =
  58         std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
  59   }
  60   if (ReadFileToString(dmi_path.Append("bios_version"), &temp)) {
  61     details.bios_version =
  62         std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
  63   }
  64   if (PathExists(FilePath(kEfiPath))) {
  65     details.bios_type = Motherboard::BiosType::kUefi;
  66   } else {
  67     details.bios_type = Motherboard::BiosType::kLegacy;
  68   }
  69   return details;
  70 }
  71 #endif
  72
  73 #if BUILDFLAG(IS_WIN)
  74 using Microsoft::WRL::ComPtr;
  75 using base::win::ScopedBstr;
  76 using base::win::ScopedVariant;
  77
  78 absl::optional<std::string> ReadStringMember(
  79     ComPtr<IWbemClassObject> class_object, const wchar_t* key) {
  80   ScopedVariant variant;
  81   HRESULT hr = class_object->Get(key, 0, variant.Receive(), 0, 0);
  82   if (SUCCEEDED(hr) && variant.type() == VT_BSTR) {
  83     const auto len = ::SysStringLen(V_BSTR(variant.ptr()));
  84     std::wstring wstr(V_BSTR(variant.ptr()), len);
  85     return base::WideToUTF8(wstr);
  86   }
  87   return {};
  88 }
  89
  90 void ReadWin32BaseBoard(const ComPtr<IWbemServices>& services,
  91                         absl::optional<std::string>* manufacturer,
  92                         absl::optional<std::string>* model) {
  93   static constexpr wchar_t kManufacturer[] = L"Manufacturer";
  94   static constexpr wchar_t kProduct[] = L"Product";
  95   static constexpr wchar_t kQueryProcessor[] =
  96       L"SELECT Manufacturer,Product FROM Win32_BaseBoard";
  97
  98   ComPtr<IEnumWbemClassObject> enumerator_base_board;
  99   HRESULT hr = services->ExecQuery(
 100       ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
 101       WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
 102       &enumerator_base_board);
 103   if (FAILED(hr) || !enumerator_base_board.Get())
 104     return;
 105
 106   ComPtr<IWbemClassObject> class_object;
 107   ULONG items_returned = 0;
 108   hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
 109                                    &items_returned);
 110   if (FAILED(hr) || !items_returned)
 111     return;
 112   *manufacturer = ReadStringMember(class_object, kManufacturer);
 113   *model = ReadStringMember(class_object, kProduct);
 114 }
 115
 116 void ReadWin32Bios(const ComPtr<IWbemServices>& services,
 117                    absl::optional<std::string>* bios_manufacturer,
 118                    absl::optional<std::string>* bios_version) {
 119   static constexpr wchar_t kManufacturer[] = L"Manufacturer";
 120   static constexpr wchar_t kVersion[] = L"Version";
 121   static constexpr wchar_t kQueryProcessor[] =
 122       L"SELECT Manufacturer,Version FROM Win32_BIOS";
 123
 124   ComPtr<IEnumWbemClassObject> enumerator_base_board;
 125   HRESULT hr = services->ExecQuery(
 126       ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
 127       WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
 128       &enumerator_base_board);
 129   if (FAILED(hr) || !enumerator_base_board.Get())
 130     return;
 131
 132   ComPtr<IWbemClassObject> class_object;
 133   ULONG items_returned = 0;
 134   hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
 135                                    &items_returned);
 136   if (FAILED(hr) || !items_returned)
 137     return;
 138   *bios_manufacturer = ReadStringMember(class_object, kManufacturer);
 139   *bios_version = ReadStringMember(class_object, kVersion);
 140 }
 141
 142 MotherboardDetails ReadMotherboardDetails() {
 143   base::win::ScopedCOMInitializer scoped_com_initializer;
 144   base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
 145                                                 base::BlockingType::MAY_BLOCK);
 146   ComPtr<IWbemServices> services;
 147   MotherboardDetails details;
 148   if (!base::win::CreateLocalWmiConnection(true, &services))
 149     return details;
 150   ReadWin32BaseBoard(services, &details.manufacturer, &details.model);
 151   ReadWin32Bios(services, &details.bios_manufacturer, &details.bios_version);
 152   return details;
 153 }
 154 #endif
 155 }  // namespace
 156
 157 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
 158 Motherboard::Motherboard() {
 159   const auto details = ReadMotherboardDetails();
 160   manufacturer_ = std::move(details.manufacturer),
 161   model_ = std::move(details.model),
 162   bios_manufacturer_ = std::move(details.bios_manufacturer),
 163   bios_version_ = std::move(details.bios_version),
 164   bios_type_ = std::move(details.bios_type);
 165 }
 166 #else
 167 Motherboard::Motherboard() = default;
 168 #endif
 169
 170 Motherboard::~Motherboard() = default;
 171
 172 }  // namespace metrics