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 <optional>
8 #include <string>
9 #include <utility>
10
11 #include "base/files/file_path.h"
12 #include "base/files/file_util.h"
13 #include "base/strings/string_util.h"
14 #include "build/build_config.h"
15
16 #if BUILDFLAG(IS_WIN)
17 #include <windows.h>
18
19 #include "base/strings/utf_string_conversions.h"
20 #include "base/threading/scoped_blocking_call.h"
21 #include "base/win/scoped_bstr.h"
22 #include "base/win/scoped_variant.h"
23 #include "base/win/wmi.h"
24 #endif
25
26 namespace metrics {
27 namespace {
28
29 struct MotherboardDetails {
30 std::optional<std::string> manufacturer;
31 std::optional<std::string> model;
32 std::optional<std::string> bios_manufacturer;
33 std::optional<std::string> bios_version;
34 std::optional<Motherboard::BiosType> bios_type;
35 };
36
37 #if BUILDFLAG(IS_LINUX)
38 using base::FilePath;
39 using base::PathExists;
40 using base::ReadFileToString;
41 using base::TrimWhitespaceASCII;
42 using base::TRIM_TRAILING;
43
ReadMotherboardDetails()44 MotherboardDetails ReadMotherboardDetails() {
45 constexpr FilePath::CharType kDmiPath[] = "/sys/devices/virtual/dmi/id";
46 constexpr FilePath::CharType kEfiPath[] = "/sys/firmware/efi";
47 const FilePath dmi_path(kDmiPath);
48 MotherboardDetails details;
49 std::string temp;
50 if (ReadFileToString(dmi_path.Append("board_vendor"), &temp)) {
51 details.manufacturer =
52 std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
53 }
54 if (ReadFileToString(dmi_path.Append("board_name"), &temp)) {
55 details.model = std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
56 }
57 if (ReadFileToString(dmi_path.Append("bios_vendor"), &temp)) {
58 details.bios_manufacturer =
59 std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
60 }
61 if (ReadFileToString(dmi_path.Append("bios_version"), &temp)) {
62 details.bios_version =
63 std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
64 }
65 if (PathExists(FilePath(kEfiPath))) {
66 details.bios_type = Motherboard::BiosType::kUefi;
67 } else {
68 details.bios_type = Motherboard::BiosType::kLegacy;
69 }
70 return details;
71 }
72 #endif
73
74 #if BUILDFLAG(IS_WIN)
75 using Microsoft::WRL::ComPtr;
76 using base::win::ScopedBstr;
77 using base::win::ScopedVariant;
78
ReadStringMember(ComPtr<IWbemClassObject> class_object,const wchar_t * key)79 std::optional<std::string> ReadStringMember(
80 ComPtr<IWbemClassObject> class_object,
81 const wchar_t* key) {
82 ScopedVariant variant;
83 HRESULT hr = class_object->Get(key, 0, variant.Receive(), 0, 0);
84 if (SUCCEEDED(hr) && variant.type() == VT_BSTR) {
85 const auto len = ::SysStringLen(V_BSTR(variant.ptr()));
86 std::wstring wstr(V_BSTR(variant.ptr()), len);
87 return base::WideToUTF8(wstr);
88 }
89 return {};
90 }
91
ReadWin32BaseBoard(const ComPtr<IWbemServices> & services,std::optional<std::string> * manufacturer,std::optional<std::string> * model)92 void ReadWin32BaseBoard(const ComPtr<IWbemServices>& services,
93 std::optional<std::string>* manufacturer,
94 std::optional<std::string>* model) {
95 static constexpr wchar_t kManufacturer[] = L"Manufacturer";
96 static constexpr wchar_t kProduct[] = L"Product";
97 static constexpr wchar_t kQueryProcessor[] =
98 L"SELECT Manufacturer,Product FROM Win32_BaseBoard";
99
100 ComPtr<IEnumWbemClassObject> enumerator_base_board;
101 HRESULT hr = services->ExecQuery(
102 ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
103 WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
104 &enumerator_base_board);
105 if (FAILED(hr) || !enumerator_base_board.Get())
106 return;
107
108 ComPtr<IWbemClassObject> class_object;
109 ULONG items_returned = 0;
110 hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
111 &items_returned);
112 if (FAILED(hr) || !items_returned)
113 return;
114 *manufacturer = ReadStringMember(class_object, kManufacturer);
115 *model = ReadStringMember(class_object, kProduct);
116 }
117
ReadWin32Bios(const ComPtr<IWbemServices> & services,std::optional<std::string> * bios_manufacturer,std::optional<std::string> * bios_version)118 void ReadWin32Bios(const ComPtr<IWbemServices>& services,
119 std::optional<std::string>* bios_manufacturer,
120 std::optional<std::string>* bios_version) {
121 static constexpr wchar_t kManufacturer[] = L"Manufacturer";
122 static constexpr wchar_t kVersion[] = L"Version";
123 static constexpr wchar_t kQueryProcessor[] =
124 L"SELECT Manufacturer,Version FROM Win32_BIOS";
125
126 ComPtr<IEnumWbemClassObject> enumerator_base_board;
127 HRESULT hr = services->ExecQuery(
128 ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
129 WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
130 &enumerator_base_board);
131 if (FAILED(hr) || !enumerator_base_board.Get())
132 return;
133
134 ComPtr<IWbemClassObject> class_object;
135 ULONG items_returned = 0;
136 hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
137 &items_returned);
138 if (FAILED(hr) || !items_returned)
139 return;
140 *bios_manufacturer = ReadStringMember(class_object, kManufacturer);
141 *bios_version = ReadStringMember(class_object, kVersion);
142 }
143
ReadFirmwareType(std::optional<Motherboard::BiosType> * bios_type)144 void ReadFirmwareType(std::optional<Motherboard::BiosType>* bios_type) {
145 FIRMWARE_TYPE firmware_type = FirmwareTypeUnknown;
146 if (::GetFirmwareType(&firmware_type)) {
147 if (firmware_type == FirmwareTypeBios) {
148 *bios_type = Motherboard::BiosType::kLegacy;
149 } else if (firmware_type == FirmwareTypeUefi) {
150 *bios_type = Motherboard::BiosType::kUefi;
151 } else {
152 *bios_type = std::nullopt;
153 }
154 }
155 }
156
ReadMotherboardDetails()157 MotherboardDetails ReadMotherboardDetails() {
158 base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
159 base::BlockingType::MAY_BLOCK);
160 ComPtr<IWbemServices> services;
161 MotherboardDetails details;
162 if (!base::win::CreateLocalWmiConnection(true, &services))
163 return details;
164 ReadWin32BaseBoard(services, &details.manufacturer, &details.model);
165 ReadWin32Bios(services, &details.bios_manufacturer, &details.bios_version);
166 ReadFirmwareType(&details.bios_type);
167 return details;
168 }
169 #endif
170 } // namespace
171
172 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
Motherboard()173 Motherboard::Motherboard() {
174 const auto details = ReadMotherboardDetails();
175 manufacturer_ = std::move(details.manufacturer),
176 model_ = std::move(details.model),
177 bios_manufacturer_ = std::move(details.bios_manufacturer),
178 bios_version_ = std::move(details.bios_version),
179 bios_type_ = std::move(details.bios_type);
180 }
181 #else
182 Motherboard::Motherboard() = default;
183 #endif
184
185 Motherboard::~Motherboard() = default;
186
187 } // namespace metrics
188