blob: 8c7bbb7d848ca26bdf8193f20900e6331e35c5a0 [file] [log] [blame]
// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/cryptauth/cryptauth_device_manager_impl.h"
#include <stddef.h>
#include <stdexcept>
#include <utility>
#include <memory>
#include "base/base64url.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/histogram_macros.h"
#include "base/strings/string_number_conversions.h"
#include "chromeos/components/proximity_auth/logging/logging.h"
#include "components/cryptauth/cryptauth_client.h"
#include "components/cryptauth/pref_names.h"
#include "components/cryptauth/proto/enum_util.h"
#include "components/cryptauth/software_feature_state.h"
#include "components/cryptauth/sync_scheduler_impl.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
namespace cryptauth {
namespace {
// The normal period between successful syncs, in hours.
const int kRefreshPeriodHours = 24;
// A more aggressive period between sync attempts to recover when the last
// sync attempt fails, in minutes. This is a base time that increases for each
// subsequent failure.
const int kDeviceSyncBaseRecoveryPeriodMinutes = 10;
// The bound on the amount to jitter the period between syncs.
const double kDeviceSyncMaxJitterRatio = 0.2;
// Keys for ExternalDeviceInfo dictionaries that are stored in the user's prefs.
const char kExternalDeviceKeyPublicKey[] = "public_key";
const char kExternalDeviceKeyDeviceName[] = "device_name";
const char kExternalDeviceKeyBluetoothAddress[] = "bluetooth_address";
const char kExternalDeviceKeyUnlockKey[] = "unlock_key";
const char kExternalDeviceKeyUnlockable[] = "unlockable";
const char kExternalDeviceKeyLastUpdateTimeMillis[] = "last_update_time_millis";
const char kExternalDeviceKeyMobileHotspotSupported[] =
"mobile_hotspot_supported";
const char kExternalDeviceKeyDeviceType[] = "device_type";
const char kExternalDeviceKeyBeaconSeeds[] = "beacon_seeds";
const char kExternalDeviceKeyArcPlusPlus[] = "arc_plus_plus";
const char kExternalDeviceKeyPixelPhone[] = "pixel_phone";
// Keys for ExternalDeviceInfo's BeaconSeed.
const char kExternalDeviceKeyBeaconSeedData[] = "beacon_seed_data";
const char kExternalDeviceKeyBeaconSeedStartMs[] = "beacon_seed_start_ms";
const char kExternalDeviceKeyBeaconSeedEndMs[] = "beacon_seed_end_ms";
// Keys specific to the dictionary which stores ExternalDeviceInfo info.
const char kDictionaryKeySoftwareFeatures[] = "software_features";
// Converts BeaconSeed protos to a list value that can be stored in user prefs.
std::unique_ptr<base::ListValue> BeaconSeedsToListValue(
const google::protobuf::RepeatedPtrField<BeaconSeed>& seeds) {
std::unique_ptr<base::ListValue> list(new base::ListValue());
for (int i = 0; i < seeds.size(); i++) {
BeaconSeed seed = seeds.Get(i);
if (!seed.has_data() || !seed.has_start_time_millis() ||
!seed.has_end_time_millis()) {
PA_LOG(WARNING) << "Unable to serialize BeaconSeed due to missing data; "
<< "skipping.";
continue;
}
std::unique_ptr<base::DictionaryValue> beacon_seed_value(
new base::DictionaryValue());
// Note that the |BeaconSeed|s' data is stored in Base64Url encoding because
// dictionary values must be valid UTF8 strings.
std::string seed_data_b64;
base::Base64UrlEncode(seed.data(),
base::Base64UrlEncodePolicy::INCLUDE_PADDING,
&seed_data_b64);
beacon_seed_value->SetString(kExternalDeviceKeyBeaconSeedData,
seed_data_b64);
// Set the timestamps as string representations of their numeric value
// since there is no notion of a base::LongValue.
beacon_seed_value->SetString(kExternalDeviceKeyBeaconSeedStartMs,
std::to_string(seed.start_time_millis()));
beacon_seed_value->SetString(kExternalDeviceKeyBeaconSeedEndMs,
std::to_string(seed.end_time_millis()));
list->Append(std::move(beacon_seed_value));
}
return list;
}
void RecordDeviceSyncSoftwareFeaturesResult(
bool success,
cryptauth::SoftwareFeature software_feature) {
UMA_HISTOGRAM_BOOLEAN("CryptAuth.DeviceSyncSoftwareFeaturesResult", success);
if (!success) {
UMA_HISTOGRAM_ENUMERATION(
"CryptAuth.DeviceSyncSoftwareFeaturesResult.Failures", software_feature,
cryptauth::SoftwareFeature_ARRAYSIZE);
}
}
// Converts supported and enabled SoftwareFeature protos to a single dictionary
// value that can be stored in user prefs.
std::unique_ptr<base::DictionaryValue>
SupportedAndEnabledSoftwareFeaturesToDictionaryValue(
const google::protobuf::RepeatedPtrField<std::string>&
supported_software_features,
const google::protobuf::RepeatedPtrField<std::string>&
enabled_software_features,
bool legacy_unlock_key,
bool legacy_mobile_hotspot_supported) {
std::unique_ptr<base::DictionaryValue> dictionary =
std::make_unique<base::DictionaryValue>();
for (const auto& supported_software_feature : supported_software_features) {
dictionary->SetInteger(supported_software_feature,
static_cast<int>(SoftwareFeatureState::kSupported));
}
for (const auto& enabled_software_feature : enabled_software_features) {
std::string software_feature_key = enabled_software_feature;
cryptauth::SoftwareFeature software_feature =
SoftwareFeatureStringToEnum(software_feature_key);
int software_feature_state;
if (!dictionary->GetInteger(software_feature_key,
&software_feature_state) ||
static_cast<SoftwareFeatureState>(software_feature_state) !=
SoftwareFeatureState::kSupported) {
PA_LOG(ERROR) << "A feature is marked as enabled but not as supported: "
<< software_feature_key;
RecordDeviceSyncSoftwareFeaturesResult(false /* success */,
software_feature);
continue;
} else {
RecordDeviceSyncSoftwareFeaturesResult(true /* success */,
software_feature);
}
dictionary->SetInteger(software_feature_key,
static_cast<int>(SoftwareFeatureState::kEnabled));
}
// If software features for EASY_UNLOCK_HOST or MAGIC_TETHER_HOST have not
// been set, check to see if the deprecated corresponding booleans are
// enabled. This can happen if the CryptAuth server is not yet serving
// software features, and only serving the deprecated booleans.
int software_feature_state;
std::string software_feature_key;
software_feature_key =
SoftwareFeatureEnumToString(cryptauth::SoftwareFeature::EASY_UNLOCK_HOST);
if (legacy_unlock_key &&
!dictionary->GetInteger(software_feature_key, &software_feature_state)) {
dictionary->SetInteger(software_feature_key,
static_cast<int>(SoftwareFeatureState::kEnabled));
}
software_feature_key = SoftwareFeatureEnumToString(
cryptauth::SoftwareFeature::MAGIC_TETHER_HOST);
if (legacy_mobile_hotspot_supported &&
!dictionary->GetInteger(software_feature_key, &software_feature_state)) {
dictionary->SetInteger(software_feature_key,
static_cast<int>(SoftwareFeatureState::kSupported));
}
return dictionary;
}
// Converts an unlock key proto to a dictionary that can be stored in user
// prefs.
std::unique_ptr<base::DictionaryValue> UnlockKeyToDictionary(
const ExternalDeviceInfo& device) {
// The device public key is a required value.
if (!device.has_public_key())
return nullptr;
std::unique_ptr<base::DictionaryValue> dictionary(
new base::DictionaryValue());
// Note that the device public key, name, and Bluetooth addresses are stored
// in Base64Url form because dictionary values must be valid UTF8 strings.
std::string public_key_b64;
base::Base64UrlEncode(device.public_key(),
base::Base64UrlEncodePolicy::INCLUDE_PADDING,
&public_key_b64);
dictionary->SetString(kExternalDeviceKeyPublicKey, public_key_b64);
if (device.has_friendly_device_name()) {
std::string device_name_b64;
base::Base64UrlEncode(device.friendly_device_name(),
base::Base64UrlEncodePolicy::INCLUDE_PADDING,
&device_name_b64);
dictionary->SetString(kExternalDeviceKeyDeviceName, device_name_b64);
}
if (device.has_bluetooth_address()) {
std::string bluetooth_address_b64;
base::Base64UrlEncode(device.bluetooth_address(),
base::Base64UrlEncodePolicy::INCLUDE_PADDING,
&bluetooth_address_b64);
dictionary->SetString(kExternalDeviceKeyBluetoothAddress,
bluetooth_address_b64);
}
if (device.has_unlockable()) {
dictionary->SetBoolean(kExternalDeviceKeyUnlockable, device.unlockable());
}
if (device.has_last_update_time_millis()) {
dictionary->SetString(kExternalDeviceKeyLastUpdateTimeMillis,
std::to_string(device.last_update_time_millis()));
}
if (device.has_device_type() && DeviceType_IsValid(device.device_type())) {
dictionary->SetInteger(kExternalDeviceKeyDeviceType, device.device_type());
}
dictionary->Set(kExternalDeviceKeyBeaconSeeds,
BeaconSeedsToListValue(device.beacon_seeds()));
if (device.has_arc_plus_plus()) {
dictionary->SetBoolean(kExternalDeviceKeyArcPlusPlus,
device.arc_plus_plus());
}
if (device.has_pixel_phone()) {
dictionary->SetBoolean(kExternalDeviceKeyPixelPhone, device.pixel_phone());
}
// In the case that the CryptAuth server is not yet serving SoftwareFeatures,
// but only the deprecated booleans, |unlock_key| and
// |mobile_hotspot_supported|, pass in the legacy values in order to correctly
// populate the SoftwareFeatures.
bool legacy_unlock_key = device.has_unlock_key() && device.unlock_key();
bool legacy_mobile_hotspot_supported =
device.has_mobile_hotspot_supported() &&
device.mobile_hotspot_supported();
dictionary->Set(kDictionaryKeySoftwareFeatures,
SupportedAndEnabledSoftwareFeaturesToDictionaryValue(
device.supported_software_features(),
device.enabled_software_features(), legacy_unlock_key,
legacy_mobile_hotspot_supported));
return dictionary;
}
void AddBeaconSeedsToExternalDevice(const base::ListValue& beacon_seeds,
ExternalDeviceInfo* external_device) {
for (size_t i = 0; i < beacon_seeds.GetSize(); i++) {
const base::DictionaryValue* seed_dictionary = nullptr;
if (!beacon_seeds.GetDictionary(i, &seed_dictionary)) {
PA_LOG(WARNING) << "Unable to retrieve BeaconSeed dictionary; "
<< "skipping.";
continue;
}
std::string seed_data_b64, start_time_millis_str, end_time_millis_str;
if (!seed_dictionary->GetString(kExternalDeviceKeyBeaconSeedData,
&seed_data_b64) ||
!seed_dictionary->GetString(kExternalDeviceKeyBeaconSeedStartMs,
&start_time_millis_str) ||
!seed_dictionary->GetString(kExternalDeviceKeyBeaconSeedEndMs,
&end_time_millis_str)) {
PA_LOG(WARNING) << "Unable to deserialize BeaconSeed due to missing "
<< "data; skipping.";
continue;
}
// Seed data is returned as raw data, not in Base64 encoding.
std::string seed_data;
if (!base::Base64UrlDecode(seed_data_b64,
base::Base64UrlDecodePolicy::REQUIRE_PADDING,
&seed_data)) {
PA_LOG(WARNING) << "Decoding seed data failed.";
continue;
}
int64_t start_time_millis, end_time_millis;
if (!base::StringToInt64(start_time_millis_str, &start_time_millis) ||
!base::StringToInt64(end_time_millis_str, &end_time_millis)) {
PA_LOG(WARNING) << "Unable to convert stored timestamp to int64_t: "
<< start_time_millis_str << " or " << end_time_millis_str;
continue;
}
BeaconSeed* seed = external_device->add_beacon_seeds();
seed->set_data(seed_data);
seed->set_start_time_millis(start_time_millis);
seed->set_end_time_millis(end_time_millis);
}
}
void AddSoftwareFeaturesToExternalDevice(
const base::DictionaryValue& software_features_dictionary,
ExternalDeviceInfo* external_device,
bool old_unlock_key_value_from_prefs,
bool old_mobile_hotspot_supported_from_prefs) {
for (const auto& it : software_features_dictionary.DictItems()) {
std::string software_feature = it.first;
if (SoftwareFeatureStringToEnum(software_feature) ==
SoftwareFeature::UNKNOWN_FEATURE) {
// SoftwareFeatures were previously stored in prefs as ints. Now,
// SoftwareFeatures are stored as full string values, e.g.,
// "betterTogetherHost". If |it.first| is not recognized by
// SoftwareFeatureStringToEnum(), that means it is in the old int
// representation of the SoftwareFeature. Convert it to its full string
// representation using SoftwareFeatureEnumToString();
int software_feature_int = std::atoi(software_feature.c_str());
software_feature = SoftwareFeatureEnumToString(
static_cast<SoftwareFeature>(software_feature_int));
}
int software_feature_state;
if (!it.second.GetAsInteger(&software_feature_state)) {
PA_LOG(WARNING) << "Unable to retrieve SoftwareFeature; skipping.";
continue;
}
switch (static_cast<SoftwareFeatureState>(software_feature_state)) {
case SoftwareFeatureState::kEnabled:
external_device->add_enabled_software_features(software_feature);
FALLTHROUGH;
case SoftwareFeatureState::kSupported:
external_device->add_supported_software_features(software_feature);
break;
default:
break;
}
}
// ExternalDeviceInfos's |unlock_key| and |mobile_hotspot_supported| fields
// are deprecated, but it may be the case that after an update to Chrome, the
// prefs reflect the old style of using these deprecated fields, instead of
// software features. To work around this, these pref values are migrated to
// software features locally.
if (old_unlock_key_value_from_prefs) {
if (!base::ContainsValue(
external_device->supported_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST))) {
external_device->add_supported_software_features(
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST));
}
if (!base::ContainsValue(
external_device->enabled_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST))) {
external_device->add_enabled_software_features(
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST));
}
}
if (old_mobile_hotspot_supported_from_prefs) {
if (!base::ContainsValue(
external_device->supported_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::MAGIC_TETHER_HOST))) {
external_device->add_supported_software_features(
SoftwareFeatureEnumToString(SoftwareFeature::MAGIC_TETHER_HOST));
}
}
}
// Converts an unlock key dictionary stored in user prefs to an
// ExternalDeviceInfo proto. Returns true if the dictionary is valid, and the
// parsed proto is written to |external_device|.
bool DictionaryToUnlockKey(const base::DictionaryValue& dictionary,
ExternalDeviceInfo* external_device) {
std::string public_key_b64;
if (!dictionary.GetString(kExternalDeviceKeyPublicKey, &public_key_b64)) {
// The public key is a required field, so if it is absent, there is no
// valid data to return.
return false;
}
std::string public_key;
if (!base::Base64UrlDecode(public_key_b64,
base::Base64UrlDecodePolicy::REQUIRE_PADDING,
&public_key)) {
// The public key is stored as a Base64Url, so if it cannot be decoded,
// there is no valid data to return.
return false;
}
external_device->set_public_key(public_key);
std::string device_name_b64;
if (dictionary.GetString(kExternalDeviceKeyDeviceName, &device_name_b64)) {
std::string device_name;
if (base::Base64UrlDecode(device_name_b64,
base::Base64UrlDecodePolicy::REQUIRE_PADDING,
&device_name)) {
external_device->set_friendly_device_name(device_name);
}
}
std::string bluetooth_address_b64;
if (dictionary.GetString(kExternalDeviceKeyBluetoothAddress,
&bluetooth_address_b64)) {
std::string bluetooth_address;
if (base::Base64UrlDecode(bluetooth_address_b64,
base::Base64UrlDecodePolicy::REQUIRE_PADDING,
&bluetooth_address)) {
external_device->set_bluetooth_address(bluetooth_address);
}
}
// TODO(crbug.com/848477): Migrate |unlockable| into
// |supported_software_features|.
bool unlockable;
if (dictionary.GetBoolean(kExternalDeviceKeyUnlockable, &unlockable))
external_device->set_unlockable(unlockable);
std::string last_update_time_millis_str;
if (dictionary.GetString(kExternalDeviceKeyLastUpdateTimeMillis,
&last_update_time_millis_str)) {
int64_t last_update_time_millis;
if (base::StringToInt64(last_update_time_millis_str,
&last_update_time_millis)) {
external_device->set_last_update_time_millis(last_update_time_millis);
} else {
PA_LOG(WARNING) << "Unable to convert stored update time to int64_t: "
<< last_update_time_millis_str;
}
}
int device_type;
if (dictionary.GetInteger(kExternalDeviceKeyDeviceType, &device_type) &&
DeviceType_IsValid(device_type)) {
external_device->set_device_type(static_cast<DeviceType>(device_type));
}
const base::ListValue* beacon_seeds;
if (dictionary.GetList(kExternalDeviceKeyBeaconSeeds, &beacon_seeds))
AddBeaconSeedsToExternalDevice(*beacon_seeds, external_device);
bool arc_plus_plus;
if (dictionary.GetBoolean(kExternalDeviceKeyArcPlusPlus, &arc_plus_plus))
external_device->set_arc_plus_plus(arc_plus_plus);
bool pixel_phone;
if (dictionary.GetBoolean(kExternalDeviceKeyPixelPhone, &pixel_phone))
external_device->set_pixel_phone(pixel_phone);
bool unlock_key = false;
dictionary.GetBoolean(kExternalDeviceKeyUnlockKey, &unlock_key);
bool mobile_hotspot_supported = false;
dictionary.GetBoolean(kExternalDeviceKeyMobileHotspotSupported,
&mobile_hotspot_supported);
const base::DictionaryValue* software_features_dictionary;
if (dictionary.GetDictionary(kDictionaryKeySoftwareFeatures,
&software_features_dictionary)) {
AddSoftwareFeaturesToExternalDevice(*software_features_dictionary,
external_device, unlock_key,
mobile_hotspot_supported);
}
return true;
}
std::unique_ptr<SyncSchedulerImpl> CreateSyncScheduler(
SyncScheduler::Delegate* delegate) {
return std::make_unique<SyncSchedulerImpl>(
delegate, base::TimeDelta::FromHours(kRefreshPeriodHours),
base::TimeDelta::FromMinutes(kDeviceSyncBaseRecoveryPeriodMinutes),
kDeviceSyncMaxJitterRatio, "CryptAuth DeviceSync");
}
} // namespace
// static
CryptAuthDeviceManagerImpl::Factory*
CryptAuthDeviceManagerImpl::Factory::factory_instance_ = nullptr;
// static
std::unique_ptr<CryptAuthDeviceManager>
CryptAuthDeviceManagerImpl::Factory::NewInstance(
base::Clock* clock,
CryptAuthClientFactory* cryptauth_client_factory,
CryptAuthGCMManager* gcm_manager,
PrefService* pref_service) {
if (!factory_instance_)
factory_instance_ = new Factory();
return factory_instance_->BuildInstance(clock, cryptauth_client_factory,
gcm_manager, pref_service);
}
// static
void CryptAuthDeviceManagerImpl::Factory::SetInstanceForTesting(
Factory* factory) {
factory_instance_ = factory;
}
CryptAuthDeviceManagerImpl::Factory::~Factory() = default;
std::unique_ptr<CryptAuthDeviceManager>
CryptAuthDeviceManagerImpl::Factory::BuildInstance(
base::Clock* clock,
CryptAuthClientFactory* cryptauth_client_factory,
CryptAuthGCMManager* gcm_manager,
PrefService* pref_service) {
return base::WrapUnique(new CryptAuthDeviceManagerImpl(
clock, cryptauth_client_factory, gcm_manager, pref_service));
}
CryptAuthDeviceManagerImpl::CryptAuthDeviceManagerImpl(
base::Clock* clock,
CryptAuthClientFactory* cryptauth_client_factory,
CryptAuthGCMManager* gcm_manager,
PrefService* pref_service)
: clock_(clock),
cryptauth_client_factory_(cryptauth_client_factory),
gcm_manager_(gcm_manager),
pref_service_(pref_service),
scheduler_(CreateSyncScheduler(this)),
weak_ptr_factory_(this) {
UpdateUnlockKeysFromPrefs();
}
CryptAuthDeviceManagerImpl::~CryptAuthDeviceManagerImpl() {
if (gcm_manager_)
gcm_manager_->RemoveObserver(this);
}
void CryptAuthDeviceManagerImpl::SetSyncSchedulerForTest(
std::unique_ptr<SyncScheduler> sync_scheduler) {
scheduler_ = std::move(sync_scheduler);
}
void CryptAuthDeviceManagerImpl::Start() {
gcm_manager_->AddObserver(this);
base::Time last_successful_sync = GetLastSyncTime();
base::TimeDelta elapsed_time_since_last_sync =
clock_->Now() - last_successful_sync;
bool is_recovering_from_failure =
pref_service_->GetBoolean(
prefs::kCryptAuthDeviceSyncIsRecoveringFromFailure) ||
last_successful_sync.is_null();
scheduler_->Start(elapsed_time_since_last_sync,
is_recovering_from_failure
? SyncScheduler::Strategy::AGGRESSIVE_RECOVERY
: SyncScheduler::Strategy::PERIODIC_REFRESH);
}
void CryptAuthDeviceManagerImpl::ForceSyncNow(
InvocationReason invocation_reason) {
pref_service_->SetInteger(prefs::kCryptAuthDeviceSyncReason,
invocation_reason);
scheduler_->ForceSync();
}
base::Time CryptAuthDeviceManagerImpl::GetLastSyncTime() const {
return base::Time::FromDoubleT(
pref_service_->GetDouble(prefs::kCryptAuthDeviceSyncLastSyncTimeSeconds));
}
base::TimeDelta CryptAuthDeviceManagerImpl::GetTimeToNextAttempt() const {
return scheduler_->GetTimeToNextSync();
}
bool CryptAuthDeviceManagerImpl::IsSyncInProgress() const {
return scheduler_->GetSyncState() ==
SyncScheduler::SyncState::SYNC_IN_PROGRESS;
}
bool CryptAuthDeviceManagerImpl::IsRecoveringFromFailure() const {
return scheduler_->GetStrategy() ==
SyncScheduler::Strategy::AGGRESSIVE_RECOVERY;
}
std::vector<ExternalDeviceInfo> CryptAuthDeviceManagerImpl::GetSyncedDevices()
const {
return synced_devices_;
}
std::vector<ExternalDeviceInfo> CryptAuthDeviceManagerImpl::GetUnlockKeys()
const {
std::vector<ExternalDeviceInfo> unlock_keys;
for (const auto& device : synced_devices_) {
if (base::ContainsValue(
device.enabled_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST))) {
unlock_keys.push_back(device);
}
}
return unlock_keys;
}
std::vector<ExternalDeviceInfo> CryptAuthDeviceManagerImpl::GetPixelUnlockKeys()
const {
std::vector<ExternalDeviceInfo> unlock_keys;
for (const auto& device : synced_devices_) {
if (base::ContainsValue(
device.enabled_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::EASY_UNLOCK_HOST)) &&
device.pixel_phone()) {
unlock_keys.push_back(device);
}
}
return unlock_keys;
}
std::vector<ExternalDeviceInfo> CryptAuthDeviceManagerImpl::GetTetherHosts()
const {
std::vector<ExternalDeviceInfo> tether_hosts;
for (const auto& device : synced_devices_) {
if (base::ContainsValue(
device.supported_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::MAGIC_TETHER_HOST))) {
tether_hosts.push_back(device);
}
}
return tether_hosts;
}
std::vector<ExternalDeviceInfo>
CryptAuthDeviceManagerImpl::GetPixelTetherHosts() const {
std::vector<ExternalDeviceInfo> tether_hosts;
for (const auto& device : synced_devices_) {
if (base::ContainsValue(
device.supported_software_features(),
SoftwareFeatureEnumToString(SoftwareFeature::MAGIC_TETHER_HOST)) &&
device.pixel_phone())
tether_hosts.push_back(device);
}
return tether_hosts;
}
void CryptAuthDeviceManagerImpl::OnGetMyDevicesSuccess(
const GetMyDevicesResponse& response) {
// Update the synced devices stored in the user's prefs.
std::unique_ptr<base::ListValue> devices_as_list(new base::ListValue());
if (!response.devices().empty())
PA_LOG(INFO) << "Devices were successfully synced.";
for (const auto& device : response.devices()) {
std::unique_ptr<base::DictionaryValue> device_dictionary =
UnlockKeyToDictionary(device);
const std::string& device_name = device.has_friendly_device_name()
? device.friendly_device_name()
: "[unknown]";
PA_LOG(INFO) << "Synced device '" << device_name
<< "': " << *device_dictionary;
devices_as_list->Append(std::move(device_dictionary));
}
bool unlock_keys_changed = !devices_as_list->Equals(
pref_service_->GetList(prefs::kCryptAuthDeviceSyncUnlockKeys));
{
ListPrefUpdate update(pref_service_, prefs::kCryptAuthDeviceSyncUnlockKeys);
update.Get()->Swap(devices_as_list.get());
}
UpdateUnlockKeysFromPrefs();
// Reset metadata used for scheduling syncing.
pref_service_->SetBoolean(prefs::kCryptAuthDeviceSyncIsRecoveringFromFailure,
false);
pref_service_->SetDouble(prefs::kCryptAuthDeviceSyncLastSyncTimeSeconds,
clock_->Now().ToDoubleT());
pref_service_->SetInteger(prefs::kCryptAuthDeviceSyncReason,
INVOCATION_REASON_UNKNOWN);
sync_request_->OnDidComplete(true);
cryptauth_client_.reset();
sync_request_.reset();
NotifySyncFinished(SyncResult::SUCCESS, unlock_keys_changed
? DeviceChangeResult::CHANGED
: DeviceChangeResult::UNCHANGED);
}
void CryptAuthDeviceManagerImpl::OnGetMyDevicesFailure(
NetworkRequestError error) {
PA_LOG(ERROR) << "GetMyDevices API failed: " << error;
pref_service_->SetBoolean(prefs::kCryptAuthDeviceSyncIsRecoveringFromFailure,
true);
sync_request_->OnDidComplete(false);
cryptauth_client_.reset();
sync_request_.reset();
NotifySyncFinished(SyncResult::FAILURE, DeviceChangeResult::UNCHANGED);
}
void CryptAuthDeviceManagerImpl::OnResyncMessage() {
ForceSyncNow(INVOCATION_REASON_SERVER_INITIATED);
}
void CryptAuthDeviceManagerImpl::UpdateUnlockKeysFromPrefs() {
const base::ListValue* unlock_key_list =
pref_service_->GetList(prefs::kCryptAuthDeviceSyncUnlockKeys);
synced_devices_.clear();
for (size_t i = 0; i < unlock_key_list->GetSize(); ++i) {
const base::DictionaryValue* unlock_key_dictionary;
if (unlock_key_list->GetDictionary(i, &unlock_key_dictionary)) {
ExternalDeviceInfo unlock_key;
if (DictionaryToUnlockKey(*unlock_key_dictionary, &unlock_key)) {
synced_devices_.push_back(unlock_key);
} else {
PA_LOG(ERROR) << "Unable to deserialize unlock key dictionary "
<< "(index=" << i << "):\n"
<< *unlock_key_dictionary;
}
} else {
PA_LOG(ERROR) << "Can not get dictionary in list of unlock keys "
<< "(index=" << i << "):\n"
<< *unlock_key_list;
}
}
}
void CryptAuthDeviceManagerImpl::OnSyncRequested(
std::unique_ptr<SyncScheduler::SyncRequest> sync_request) {
// If a sync is already in progress, there is no need to start a new one.
if (sync_request_) {
sync_request->Cancel();
return;
}
NotifySyncStarted();
sync_request_ = std::move(sync_request);
cryptauth_client_ = cryptauth_client_factory_->CreateInstance();
InvocationReason invocation_reason = INVOCATION_REASON_UNKNOWN;
int reason_stored_in_prefs =
pref_service_->GetInteger(prefs::kCryptAuthDeviceSyncReason);
// If the sync attempt is not forced, it is acceptable for CryptAuth to return
// a cached copy of the user's devices, rather taking a database hit for the
// freshest data.
bool is_sync_speculative =
reason_stored_in_prefs != INVOCATION_REASON_UNKNOWN;
if (InvocationReason_IsValid(reason_stored_in_prefs) &&
reason_stored_in_prefs != INVOCATION_REASON_UNKNOWN) {
invocation_reason = static_cast<InvocationReason>(reason_stored_in_prefs);
} else if (GetLastSyncTime().is_null()) {
invocation_reason = INVOCATION_REASON_INITIALIZATION;
} else if (IsRecoveringFromFailure()) {
invocation_reason = INVOCATION_REASON_FAILURE_RECOVERY;
} else {
invocation_reason = INVOCATION_REASON_PERIODIC;
}
GetMyDevicesRequest request;
request.set_invocation_reason(invocation_reason);
request.set_allow_stale_read(is_sync_speculative);
net::PartialNetworkTrafficAnnotationTag partial_traffic_annotation =
net::DefinePartialNetworkTrafficAnnotation("cryptauth_get_my_devices",
"oauth2_api_call_flow", R"(
semantics {
sender: "CryptAuth Device Manager"
description:
"Gets a list of the devices registered (for the same user) on "
"CryptAuth."
trigger:
"Once every day, or by API request. Periodic calls happen because "
"devides that do not re-enrolled for more than X days (currently 45) "
"are automatically removed from the server."
data: "OAuth 2.0 token."
destination: GOOGLE_OWNED_SERVICE
}
policy {
setting:
"This feature cannot be disabled in settings. However, this request "
"is made only for signed-in users."
chrome_policy {
SigninAllowed {
SigninAllowed: false
}
}
})");
cryptauth_client_->GetMyDevices(
request,
base::Bind(&CryptAuthDeviceManagerImpl::OnGetMyDevicesSuccess,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&CryptAuthDeviceManagerImpl::OnGetMyDevicesFailure,
weak_ptr_factory_.GetWeakPtr()),
partial_traffic_annotation);
}
} // namespace cryptauth