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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 "chrome/browser/extensions/api/enterprise_reporting_private/conversion_utils.h"
#include <algorithm>
#include "build/build_config.h"
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
#include <memory>
#include <utility>
#include "base/base64url.h"
#include "base/files/file_path.h"
#include "components/device_signals/core/browser/signals_types.h"
#include "components/device_signals/core/common/common_types.h"
#include "extensions/browser/extension_function.h"
#if BUILDFLAG(IS_WIN)
#include "base/strings/sys_string_conversions.h"
#include "components/device_signals/core/common/win/win_types.h"
#endif // BUILDFLAG(IS_WIN)
using SignalCollectionError = device_signals::SignalCollectionError;
using PresenceValue = device_signals::PresenceValue;
namespace extensions {
namespace {
constexpr size_t kGeneralSignalUpperLimit = 128U;
std::optional<ParsedSignalsError> TryParseError(
const device_signals::SignalsAggregationResponse& response,
const std::optional<device_signals::BaseSignalResponse>& bundle) {
std::optional<std::string> error_string;
if (response.top_level_error) {
return ParsedSignalsError{response.top_level_error.value(),
/*is_top_level_error=*/true};
}
if (!bundle) {
return ParsedSignalsError{SignalCollectionError::kMissingBundle,
/*is_top_level_error=*/false};
}
if (bundle->collection_error) {
return ParsedSignalsError{bundle->collection_error.value(),
/*is_top_level_error=*/false};
}
return std::nullopt;
}
api::enterprise_reporting_private::PresenceValue ConvertPresenceValue(
PresenceValue presence) {
switch (presence) {
case PresenceValue::kUnspecified:
return api::enterprise_reporting_private::PresenceValue::kUnspecified;
case PresenceValue::kAccessDenied:
return api::enterprise_reporting_private::PresenceValue::kAccessDenied;
case PresenceValue::kNotFound:
return api::enterprise_reporting_private::PresenceValue::kNotFound;
case PresenceValue::kFound:
return api::enterprise_reporting_private::PresenceValue::kFound;
}
}
std::string EncodeHash(const std::string& byte_string) {
std::string encoded_string;
base::Base64UrlEncode(byte_string, base::Base64UrlEncodePolicy::OMIT_PADDING,
&encoded_string);
return encoded_string;
}
std::vector<std::string> EncodeHashes(
const std::vector<std::string>& byte_strings) {
std::vector<std::string> encoded_strings;
const size_t upper_bound =
std::min(kGeneralSignalUpperLimit, byte_strings.size());
for (size_t i = 0; i < upper_bound; ++i) {
encoded_strings.push_back(EncodeHash(byte_strings[i]));
}
return encoded_strings;
}
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
std::optional<device_signals::RegistryHive> ConvertHiveFromApi(
api::enterprise_reporting_private::RegistryHive api_hive) {
switch (api_hive) {
case api::enterprise_reporting_private::RegistryHive::kHkeyClassesRoot:
return device_signals::RegistryHive::kHkeyClassesRoot;
case api::enterprise_reporting_private::RegistryHive::kHkeyLocalMachine:
return device_signals::RegistryHive::kHkeyLocalMachine;
case api::enterprise_reporting_private::RegistryHive::kHkeyCurrentUser:
return device_signals::RegistryHive::kHkeyCurrentUser;
case api::enterprise_reporting_private::RegistryHive::kNone:
return std::nullopt;
}
}
api::enterprise_reporting_private::RegistryHive ConvertHiveToApi(
std::optional<device_signals::RegistryHive> hive) {
if (!hive) {
return api::enterprise_reporting_private::RegistryHive::kNone;
}
switch (hive.value()) {
case device_signals::RegistryHive::kHkeyClassesRoot:
return api::enterprise_reporting_private::RegistryHive::kHkeyClassesRoot;
case device_signals::RegistryHive::kHkeyLocalMachine:
return api::enterprise_reporting_private::RegistryHive::kHkeyLocalMachine;
case device_signals::RegistryHive::kHkeyCurrentUser:
return api::enterprise_reporting_private::RegistryHive::kHkeyCurrentUser;
}
}
#endif // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
} // namespace
std::vector<device_signals::GetFileSystemInfoOptions>
ConvertFileSystemInfoOptions(
const std::vector<
api::enterprise_reporting_private::GetFileSystemInfoOptions>&
api_options) {
std::vector<device_signals::GetFileSystemInfoOptions> converted_options;
for (const auto& api_options_param : api_options) {
device_signals::GetFileSystemInfoOptions converted_param;
converted_param.file_path =
base::FilePath::FromUTF8Unsafe(api_options_param.path);
converted_param.compute_sha256 = api_options_param.compute_sha256;
converted_param.compute_executable_metadata =
api_options_param.compute_executable_metadata;
converted_options.push_back(std::move(converted_param));
}
return converted_options;
}
std::optional<ParsedSignalsError> ConvertFileSystemInfoResponse(
const device_signals::SignalsAggregationResponse& aggregation_response,
std::vector<api::enterprise_reporting_private::GetFileSystemInfoResponse>*
arg_list) {
auto error = TryParseError(aggregation_response,
aggregation_response.file_system_info_response);
if (error) {
return error.value();
}
std::vector<api::enterprise_reporting_private::GetFileSystemInfoResponse>
api_responses;
const auto& file_system_signal_values =
aggregation_response.file_system_info_response.value();
for (const auto& file_system_item :
file_system_signal_values.file_system_items) {
api::enterprise_reporting_private::GetFileSystemInfoResponse response;
response.path = file_system_item.file_path.AsUTF8Unsafe();
response.presence = ConvertPresenceValue(file_system_item.presence);
if (file_system_item.sha256_hash) {
response.sha256_hash = EncodeHash(*file_system_item.sha256_hash);
}
if (file_system_item.executable_metadata) {
const auto& executable_metadata =
file_system_item.executable_metadata.value();
response.is_running = executable_metadata.is_running;
if (executable_metadata.public_keys_hashes) {
response.public_keys_hashes =
EncodeHashes(executable_metadata.public_keys_hashes.value());
}
response.product_name = executable_metadata.product_name;
response.version = executable_metadata.version;
}
api_responses.push_back(std::move(response));
}
*arg_list = std::move(api_responses);
return std::nullopt;
}
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
std::vector<device_signals::GetSettingsOptions> ConvertSettingsOptions(
const std::vector<api::enterprise_reporting_private::GetSettingsOptions>&
api_options) {
std::vector<device_signals::GetSettingsOptions> converted_options;
for (const auto& api_options_param : api_options) {
device_signals::GetSettingsOptions converted_param;
converted_param.path = api_options_param.path;
converted_param.key = api_options_param.key;
converted_param.get_value = api_options_param.get_value;
converted_param.hive = ConvertHiveFromApi(api_options_param.hive);
converted_options.push_back(std::move(converted_param));
}
return converted_options;
}
std::optional<ParsedSignalsError> ConvertSettingsResponse(
const device_signals::SignalsAggregationResponse& aggregation_response,
std::vector<api::enterprise_reporting_private::GetSettingsResponse>*
arg_list) {
auto error = TryParseError(aggregation_response,
aggregation_response.settings_response);
if (error) {
return error.value();
}
std::vector<api::enterprise_reporting_private::GetSettingsResponse>
api_responses;
const auto& settings_signal_values =
aggregation_response.settings_response.value();
for (const auto& settings_item : settings_signal_values.settings_items) {
api::enterprise_reporting_private::GetSettingsResponse response;
response.path = settings_item.path;
response.key = settings_item.key;
response.presence = ConvertPresenceValue(settings_item.presence);
response.hive = ConvertHiveToApi(settings_item.hive);
if (settings_item.setting_json_value) {
response.value = settings_item.setting_json_value.value();
}
api_responses.push_back(std::move(response));
}
*arg_list = std::move(api_responses);
return std::nullopt;
}
#endif // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
#if BUILDFLAG(IS_WIN)
std::optional<ParsedSignalsError> ConvertAvProductsResponse(
const device_signals::SignalsAggregationResponse& aggregation_response,
std::vector<api::enterprise_reporting_private::AntiVirusSignal>* arg_list) {
auto error = TryParseError(aggregation_response,
aggregation_response.av_signal_response);
if (error) {
return error.value();
}
std::vector<api::enterprise_reporting_private::AntiVirusSignal>
api_av_signals;
const auto& av_response = aggregation_response.av_signal_response.value();
const size_t upper_bound =
std::min(kGeneralSignalUpperLimit, av_response.av_products.size());
for (size_t i = 0U; i < upper_bound; ++i) {
const auto& av_product = av_response.av_products[i];
api::enterprise_reporting_private::AntiVirusSignal api_av_signal;
api_av_signal.display_name = av_product.display_name;
api_av_signal.product_id = av_product.product_id;
switch (av_product.state) {
case device_signals::AvProductState::kOn:
api_av_signal.state =
api::enterprise_reporting_private::AntiVirusProductState::kOn;
break;
case device_signals::AvProductState::kOff:
api_av_signal.state =
api::enterprise_reporting_private::AntiVirusProductState::kOff;
break;
case device_signals::AvProductState::kSnoozed:
api_av_signal.state =
api::enterprise_reporting_private::AntiVirusProductState::kSnoozed;
break;
case device_signals::AvProductState::kExpired:
api_av_signal.state =
api::enterprise_reporting_private::AntiVirusProductState::kExpired;
break;
}
api_av_signals.push_back(std::move(api_av_signal));
}
*arg_list = std::move(api_av_signals);
return std::nullopt;
}
std::optional<ParsedSignalsError> ConvertHotfixesResponse(
const device_signals::SignalsAggregationResponse& aggregation_response,
std::vector<api::enterprise_reporting_private::HotfixSignal>* arg_list) {
auto error = TryParseError(aggregation_response,
aggregation_response.hotfix_signal_response);
if (error) {
return error.value();
}
std::vector<api::enterprise_reporting_private::HotfixSignal>
api_hotfix_signals;
const auto& hotfix_response =
aggregation_response.hotfix_signal_response.value();
const size_t upper_bound =
std::min(kGeneralSignalUpperLimit, hotfix_response.hotfixes.size());
for (size_t i = 0U; i < upper_bound; ++i) {
const auto& hotfix = hotfix_response.hotfixes[i];
api::enterprise_reporting_private::HotfixSignal api_hotfix;
api_hotfix.hotfix_id = hotfix.hotfix_id;
api_hotfix_signals.push_back(std::move(api_hotfix));
}
*arg_list = std::move(api_hotfix_signals);
return std::nullopt;
}
#endif // BUILDFLAG(IS_WIN)
} // namespace extensions
#endif // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
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