// 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.

#ifndef COMPONENTS_DEVICE_SIGNALS_CORE_COMMON_PLATFORM_UTILS_H_
#define COMPONENTS_DEVICE_SIGNALS_CORE_COMMON_PLATFORM_UTILS_H_

#include <optional>
#include <string>
#include <vector>

#include "base/process/process_handle.h"
#include "build/build_config.h"
#include "components/device_signals/core/common/common_types.h"

namespace base {
class FilePath;
}  // namespace base

namespace device_signals {

struct CrowdStrikeSignals;

// Returns true if `file_path` is a non-empty, strictly local file path (i.e.
// not a UNC/network path and not an NT-object or device namespace path like
// \??\... or \Device\...).
bool IsSupportedLocalPath(const base::FilePath& file_path);

// Extracts the common details for resolving a file path on different
// platforms. Resolves environment variables and relative markers in
// `file_path`, and returns the path via `resolved_file_path`. For
// consistency on all platforms, this method will return false if no file
// system item resides at the end path and true otherwise.
bool ResolvePath(const base::FilePath& file_path,
                 base::FilePath* resolved_file_path);

// Returns the file path pointing to the executable file that spawned
// the given process `pid`.
std::optional<base::FilePath> GetProcessExePath(base::ProcessId pid);

// Returns details about an installed CrowdStrike agent (if any) read
// from location which can be accessed synchronously (i.e. not the
// data.zta file). For a more robust retrieval, see the
// CrowdStrikeClient class.
std::optional<CrowdStrikeSignals> GetCrowdStrikeSignals();

base::FilePath GetCrowdStrikeZtaFilePath();

std::string GetOsName();
std::string GetOsVersion();
std::string GetDeviceModel();
std::string GetSerialNumber();
SettingValue GetScreenlockSecured();
SettingValue GetDiskEncrypted();
std::vector<std::string> GetMacAddresses();

#if BUILDFLAG(IS_WIN)
SettingValue GetSecureBootEnabled();
std::optional<std::string> GetWindowsMachineDomain();
#endif  // BUILDFLAG(IS_WIN)

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
// Return the distribution VERSION_ID contained in
// /etc/os-release, if it exists.
std::optional<std::string> GetDistributionVersion();
#endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)

namespace internal {

// Sets a `mac_addresses` vector to be used for testing purposes. The vector
// will be copied into static storage.
void SetMacAddressesForTesting(const std::vector<std::string>& mac_addresses);

void ClearMacAddressesForTesting();

std::vector<std::string> GetMacAddressesImpl();

}  // namespace internal
}  // namespace device_signals

#endif  // COMPONENTS_DEVICE_SIGNALS_CORE_COMMON_PLATFORM_UTILS_H_