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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/metrics/motherboard.h"
#include <optional>
#include <string>
#include <utility>
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/strings/string_util.h"
#include "build/build_config.h"
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include "base/strings/utf_string_conversions.h"
#include "base/threading/scoped_blocking_call.h"
#include "base/win/scoped_bstr.h"
#include "base/win/scoped_variant.h"
#include "base/win/wmi.h"
#endif
namespace metrics {
namespace {
struct MotherboardDetails {
std::optional<std::string> manufacturer;
std::optional<std::string> model;
std::optional<std::string> bios_manufacturer;
std::optional<std::string> bios_version;
std::optional<Motherboard::BiosType> bios_type;
};
#if BUILDFLAG(IS_LINUX)
using base::FilePath;
using base::PathExists;
using base::ReadFileToString;
using base::TrimWhitespaceASCII;
using base::TRIM_TRAILING;
MotherboardDetails ReadMotherboardDetails() {
constexpr FilePath::CharType kDmiPath[] = "/sys/devices/virtual/dmi/id";
constexpr FilePath::CharType kEfiPath[] = "/sys/firmware/efi";
const FilePath dmi_path(kDmiPath);
MotherboardDetails details;
std::string temp;
if (ReadFileToString(dmi_path.Append("board_vendor"), &temp)) {
details.manufacturer =
std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
}
if (ReadFileToString(dmi_path.Append("board_name"), &temp)) {
details.model = std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
}
if (ReadFileToString(dmi_path.Append("bios_vendor"), &temp)) {
details.bios_manufacturer =
std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
}
if (ReadFileToString(dmi_path.Append("bios_version"), &temp)) {
details.bios_version =
std::string(TrimWhitespaceASCII(temp, TRIM_TRAILING));
}
if (PathExists(FilePath(kEfiPath))) {
details.bios_type = Motherboard::BiosType::kUefi;
} else {
details.bios_type = Motherboard::BiosType::kLegacy;
}
return details;
}
#endif
#if BUILDFLAG(IS_WIN)
using Microsoft::WRL::ComPtr;
using base::win::ScopedBstr;
using base::win::ScopedVariant;
std::optional<std::string> ReadStringMember(
ComPtr<IWbemClassObject> class_object,
const wchar_t* key) {
ScopedVariant variant;
HRESULT hr = class_object->Get(key, 0, variant.Receive(), 0, 0);
if (SUCCEEDED(hr) && variant.type() == VT_BSTR) {
const auto len = ::SysStringLen(V_BSTR(variant.ptr()));
std::wstring wstr(V_BSTR(variant.ptr()), len);
return base::WideToUTF8(wstr);
}
return {};
}
void ReadWin32BaseBoard(const ComPtr<IWbemServices>& services,
std::optional<std::string>* manufacturer,
std::optional<std::string>* model) {
static constexpr wchar_t kManufacturer[] = L"Manufacturer";
static constexpr wchar_t kProduct[] = L"Product";
static constexpr wchar_t kQueryProcessor[] =
L"SELECT Manufacturer,Product FROM Win32_BaseBoard";
ComPtr<IEnumWbemClassObject> enumerator_base_board;
HRESULT hr = services->ExecQuery(
ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
&enumerator_base_board);
if (FAILED(hr) || !enumerator_base_board.Get())
return;
ComPtr<IWbemClassObject> class_object;
ULONG items_returned = 0;
hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
&items_returned);
if (FAILED(hr) || !items_returned)
return;
*manufacturer = ReadStringMember(class_object, kManufacturer);
*model = ReadStringMember(class_object, kProduct);
}
void ReadWin32Bios(const ComPtr<IWbemServices>& services,
std::optional<std::string>* bios_manufacturer,
std::optional<std::string>* bios_version) {
static constexpr wchar_t kManufacturer[] = L"Manufacturer";
static constexpr wchar_t kVersion[] = L"Version";
static constexpr wchar_t kQueryProcessor[] =
L"SELECT Manufacturer,Version FROM Win32_BIOS";
ComPtr<IEnumWbemClassObject> enumerator_base_board;
HRESULT hr = services->ExecQuery(
ScopedBstr(L"WQL").Get(), ScopedBstr(kQueryProcessor).Get(),
WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, nullptr,
&enumerator_base_board);
if (FAILED(hr) || !enumerator_base_board.Get())
return;
ComPtr<IWbemClassObject> class_object;
ULONG items_returned = 0;
hr = enumerator_base_board->Next(WBEM_INFINITE, 1, &class_object,
&items_returned);
if (FAILED(hr) || !items_returned)
return;
*bios_manufacturer = ReadStringMember(class_object, kManufacturer);
*bios_version = ReadStringMember(class_object, kVersion);
}
void ReadFirmwareType(std::optional<Motherboard::BiosType>* bios_type) {
FIRMWARE_TYPE firmware_type = FirmwareTypeUnknown;
if (::GetFirmwareType(&firmware_type)) {
if (firmware_type == FirmwareTypeBios) {
*bios_type = Motherboard::BiosType::kLegacy;
} else if (firmware_type == FirmwareTypeUefi) {
*bios_type = Motherboard::BiosType::kUefi;
} else {
*bios_type = std::nullopt;
}
}
}
MotherboardDetails ReadMotherboardDetails() {
base::ScopedBlockingCall scoped_blocking_call(FROM_HERE,
base::BlockingType::MAY_BLOCK);
ComPtr<IWbemServices> services;
MotherboardDetails details;
if (!base::win::CreateLocalWmiConnection(true, &services))
return details;
ReadWin32BaseBoard(services, &details.manufacturer, &details.model);
ReadWin32Bios(services, &details.bios_manufacturer, &details.bios_version);
ReadFirmwareType(&details.bios_type);
return details;
}
#endif
} // namespace
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_WIN)
Motherboard::Motherboard() {
auto details = ReadMotherboardDetails();
manufacturer_ = std::move(details.manufacturer),
model_ = std::move(details.model),
bios_manufacturer_ = std::move(details.bios_manufacturer),
bios_version_ = std::move(details.bios_version),
bios_type_ = std::move(details.bios_type);
}
#else
Motherboard::Motherboard() = default;
#endif
Motherboard::~Motherboard() = default;
} // namespace metrics
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