File: device_info_fetcher_linux.cc

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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chrome/browser/enterprise/signals/device_info_fetcher_linux.h"

#include <string>

#include "base/files/dir_reader_posix.h"
#include "base/files/file.h"
#include "base/files/file_util.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/system/sys_info.h"
#include "components/device_signals/core/browser/browser_utils.h"
#include "components/device_signals/core/common/common_types.h"
#include "components/device_signals/core/common/platform_utils.h"
#include "net/base/network_interfaces.h"

namespace enterprise_signals {

namespace {

std::string GetOsVersion() {
  base::FilePath os_release_file("/etc/os-release");
  std::string release_info;
  base::StringPairs values;
  if (base::PathExists(os_release_file) &&
      base::ReadFileToStringWithMaxSize(os_release_file, &release_info, 8192) &&
      base::SplitStringIntoKeyValuePairs(release_info, '=', '\n', &values)) {
    auto version_id = std::ranges::find(
        values, "VERSION_ID", &std::pair<std::string, std::string>::first);
    if (version_id != values.end()) {
      return std::string(
          base::TrimString(version_id->second, "\"", base::TRIM_ALL));
    }
  }
  return base::SysInfo::OperatingSystemVersion();
}

std::string GetSecurityPatchLevel() {
  int32_t major, minor, bugfix;
  base::SysInfo::OperatingSystemVersionNumbers(&major, &minor, &bugfix);
  return base::StringPrintf("%d.%d.%d", major, minor, bugfix);
}

}  // namespace

// static
std::unique_ptr<DeviceInfoFetcher> DeviceInfoFetcher::CreateInstanceInternal() {
  return std::make_unique<DeviceInfoFetcherLinux>();
}

DeviceInfoFetcherLinux::DeviceInfoFetcherLinux() = default;

DeviceInfoFetcherLinux::~DeviceInfoFetcherLinux() = default;

DeviceInfo DeviceInfoFetcherLinux::Fetch() {
  DeviceInfo device_info;
  device_info.os_name = "linux";
  device_info.os_version = GetOsVersion();
  device_info.security_patch_level = GetSecurityPatchLevel();
  device_info.device_host_name = device_signals::GetHostName();
  device_info.device_model = device_signals::GetDeviceModel();
  device_info.serial_number = device_signals::GetSerialNumber();
  device_info.screen_lock_secured = device_signals::GetScreenlockSecured();
  device_info.disk_encrypted = device_signals::GetDiskEncrypted();
  device_info.mac_addresses = device_signals::GetMacAddresses();
  return device_info;
}

}  // namespace enterprise_signals