| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/policy/device_status_collector.h" | |
| 6 | |
| 7 #include <limits> | |
| 8 | |
| 9 #include "base/bind.h" | |
| 10 #include "base/bind_helpers.h" | |
| 11 #include "base/location.h" | |
| 12 #include "base/logging.h" | |
| 13 #include "base/memory/scoped_ptr.h" | |
| 14 #include "base/string_number_conversions.h" | |
| 15 #include "base/values.h" | |
| 16 #include "chrome/browser/chromeos/settings/cros_settings.h" | |
| 17 #include "chrome/browser/chromeos/settings/cros_settings_names.h" | |
| 18 #include "chrome/browser/chromeos/system/statistics_provider.h" | |
| 19 #include "chrome/browser/policy/proto/device_management_backend.pb.h" | |
| 20 #include "chrome/browser/prefs/pref_service.h" | |
| 21 #include "chrome/browser/prefs/scoped_user_pref_update.h" | |
| 22 #include "chrome/common/chrome_notification_types.h" | |
| 23 #include "chrome/common/chrome_version_info.h" | |
| 24 #include "chrome/common/pref_names.h" | |
| 25 #include "content/public/browser/notification_details.h" | |
| 26 #include "content/public/browser/notification_source.h" | |
| 27 | |
| 28 using base::Time; | |
| 29 using base::TimeDelta; | |
| 30 using chromeos::VersionLoader; | |
| 31 | |
| 32 namespace em = enterprise_management; | |
| 33 | |
| 34 namespace { | |
| 35 // How many seconds of inactivity triggers the idle state. | |
| 36 const int kIdleStateThresholdSeconds = 300; | |
| 37 | |
| 38 // How many days in the past to store active periods for. | |
| 39 const unsigned int kMaxStoredPastActivityDays = 30; | |
| 40 | |
| 41 // How many days in the future to store active periods for. | |
| 42 const unsigned int kMaxStoredFutureActivityDays = 2; | |
| 43 | |
| 44 // How often, in seconds, to update the device location. | |
| 45 const unsigned int kGeolocationPollIntervalSeconds = 30 * 60; | |
| 46 | |
| 47 const int64 kMillisecondsPerDay = Time::kMicrosecondsPerDay / 1000; | |
| 48 | |
| 49 const char kLatitude[] = "latitude"; | |
| 50 | |
| 51 const char kLongitude[] = "longitude"; | |
| 52 | |
| 53 const char kAltitude[] = "altitude"; | |
| 54 | |
| 55 const char kAccuracy[] = "accuracy"; | |
| 56 | |
| 57 const char kAltitudeAccuracy[] = "altitude_accuracy"; | |
| 58 | |
| 59 const char kHeading[] = "heading"; | |
| 60 | |
| 61 const char kSpeed[] = "speed"; | |
| 62 | |
| 63 const char kTimestamp[] = "timestamp"; | |
| 64 | |
| 65 // Determine the day key (milliseconds since epoch for corresponding day in UTC) | |
| 66 // for a given |timestamp|. | |
| 67 int64 TimestampToDayKey(Time timestamp) { | |
| 68 Time::Exploded exploded; | |
| 69 timestamp.LocalMidnight().LocalExplode(&exploded); | |
| 70 return (Time::FromUTCExploded(exploded) - Time::UnixEpoch()).InMilliseconds(); | |
| 71 } | |
| 72 | |
| 73 } // namespace | |
| 74 | |
| 75 namespace policy { | |
| 76 | |
| 77 DeviceStatusCollector::DeviceStatusCollector( | |
| 78 PrefService* local_state, | |
| 79 chromeos::system::StatisticsProvider* provider, | |
| 80 LocationUpdateRequester location_update_requester) | |
| 81 : max_stored_past_activity_days_(kMaxStoredPastActivityDays), | |
| 82 max_stored_future_activity_days_(kMaxStoredFutureActivityDays), | |
| 83 local_state_(local_state), | |
| 84 last_idle_check_(Time()), | |
| 85 last_reported_day_(0), | |
| 86 duration_for_last_reported_day_(0), | |
| 87 geolocation_update_in_progress_(false), | |
| 88 statistics_provider_(provider), | |
| 89 ALLOW_THIS_IN_INITIALIZER_LIST(weak_factory_(this)), | |
| 90 location_update_requester_(location_update_requester), | |
| 91 report_version_info_(false), | |
| 92 report_activity_times_(false), | |
| 93 report_boot_mode_(false), | |
| 94 report_location_(false) { | |
| 95 if (!location_update_requester_) | |
| 96 location_update_requester_ = &content::RequestLocationUpdate; | |
| 97 idle_poll_timer_.Start(FROM_HERE, | |
| 98 TimeDelta::FromSeconds(kIdlePollIntervalSeconds), | |
| 99 this, &DeviceStatusCollector::CheckIdleState); | |
| 100 | |
| 101 cros_settings_ = chromeos::CrosSettings::Get(); | |
| 102 | |
| 103 // Watch for changes to the individual policies that control what the status | |
| 104 // reports contain. | |
| 105 cros_settings_->AddSettingsObserver(chromeos::kReportDeviceVersionInfo, this); | |
| 106 cros_settings_->AddSettingsObserver(chromeos::kReportDeviceActivityTimes, | |
| 107 this); | |
| 108 cros_settings_->AddSettingsObserver(chromeos::kReportDeviceBootMode, this); | |
| 109 cros_settings_->AddSettingsObserver(chromeos::kReportDeviceLocation, this); | |
| 110 | |
| 111 // The last known location is persisted in local state. This makes location | |
| 112 // information available immediately upon startup and avoids the need to | |
| 113 // reacquire the location on every user session change or browser crash. | |
| 114 content::Geoposition position; | |
| 115 std::string timestamp_str; | |
| 116 int64 timestamp; | |
| 117 const base::DictionaryValue* location = | |
| 118 local_state_->GetDictionary(prefs::kDeviceLocation); | |
| 119 if (location->GetDouble(kLatitude, &position.latitude) && | |
| 120 location->GetDouble(kLongitude, &position.longitude) && | |
| 121 location->GetDouble(kAltitude, &position.altitude) && | |
| 122 location->GetDouble(kAccuracy, &position.accuracy) && | |
| 123 location->GetDouble(kAltitudeAccuracy, &position.altitude_accuracy) && | |
| 124 location->GetDouble(kHeading, &position.heading) && | |
| 125 location->GetDouble(kSpeed, &position.speed) && | |
| 126 location->GetString(kTimestamp, ×tamp_str) && | |
| 127 base::StringToInt64(timestamp_str, ×tamp)) { | |
| 128 position.timestamp = Time::FromInternalValue(timestamp); | |
| 129 position_ = position; | |
| 130 } | |
| 131 | |
| 132 // Fetch the current values of the policies. | |
| 133 UpdateReportingSettings(); | |
| 134 | |
| 135 // Get the the OS and firmware version info. | |
| 136 version_loader_.GetVersion( | |
| 137 VersionLoader::VERSION_FULL, | |
| 138 base::Bind(&DeviceStatusCollector::OnOSVersion, base::Unretained(this)), | |
| 139 &tracker_); | |
| 140 version_loader_.GetFirmware( | |
| 141 base::Bind(&DeviceStatusCollector::OnOSFirmware, base::Unretained(this)), | |
| 142 &tracker_); | |
| 143 } | |
| 144 | |
| 145 DeviceStatusCollector::~DeviceStatusCollector() { | |
| 146 cros_settings_->RemoveSettingsObserver(chromeos::kReportDeviceVersionInfo, | |
| 147 this); | |
| 148 cros_settings_->RemoveSettingsObserver(chromeos::kReportDeviceActivityTimes, | |
| 149 this); | |
| 150 cros_settings_->RemoveSettingsObserver(chromeos::kReportDeviceBootMode, this); | |
| 151 cros_settings_->RemoveSettingsObserver(chromeos::kReportDeviceLocation, this); | |
| 152 } | |
| 153 | |
| 154 // static | |
| 155 void DeviceStatusCollector::RegisterPrefs(PrefServiceSimple* local_state) { | |
| 156 local_state->RegisterDictionaryPref(prefs::kDeviceActivityTimes, | |
| 157 new base::DictionaryValue); | |
| 158 local_state->RegisterDictionaryPref(prefs::kDeviceLocation, | |
| 159 new base::DictionaryValue); | |
| 160 } | |
| 161 | |
| 162 void DeviceStatusCollector::CheckIdleState() { | |
| 163 CalculateIdleState(kIdleStateThresholdSeconds, | |
| 164 base::Bind(&DeviceStatusCollector::IdleStateCallback, | |
| 165 base::Unretained(this))); | |
| 166 } | |
| 167 | |
| 168 void DeviceStatusCollector::UpdateReportingSettings() { | |
| 169 // Attempt to fetch the current value of the reporting settings. | |
| 170 // If trusted values are not available, register this function to be called | |
| 171 // back when they are available. | |
| 172 if (chromeos::CrosSettingsProvider::TRUSTED != | |
| 173 cros_settings_->PrepareTrustedValues( | |
| 174 base::Bind(&DeviceStatusCollector::UpdateReportingSettings, | |
| 175 weak_factory_.GetWeakPtr()))) { | |
| 176 return; | |
| 177 } | |
| 178 cros_settings_->GetBoolean( | |
| 179 chromeos::kReportDeviceVersionInfo, &report_version_info_); | |
| 180 cros_settings_->GetBoolean( | |
| 181 chromeos::kReportDeviceActivityTimes, &report_activity_times_); | |
| 182 cros_settings_->GetBoolean( | |
| 183 chromeos::kReportDeviceBootMode, &report_boot_mode_); | |
| 184 cros_settings_->GetBoolean( | |
| 185 chromeos::kReportDeviceLocation, &report_location_); | |
| 186 | |
| 187 if (report_location_) { | |
| 188 ScheduleGeolocationUpdateRequest(); | |
| 189 } else { | |
| 190 geolocation_update_timer_.Stop(); | |
| 191 position_ = content::Geoposition(); | |
| 192 local_state_->ClearPref(prefs::kDeviceLocation); | |
| 193 } | |
| 194 } | |
| 195 | |
| 196 Time DeviceStatusCollector::GetCurrentTime() { | |
| 197 return Time::Now(); | |
| 198 } | |
| 199 | |
| 200 // Remove all out-of-range activity times from the local store. | |
| 201 void DeviceStatusCollector::PruneStoredActivityPeriods(Time base_time) { | |
| 202 Time min_time = | |
| 203 base_time - TimeDelta::FromDays(max_stored_past_activity_days_); | |
| 204 Time max_time = | |
| 205 base_time + TimeDelta::FromDays(max_stored_future_activity_days_); | |
| 206 TrimStoredActivityPeriods(TimestampToDayKey(min_time), 0, | |
| 207 TimestampToDayKey(max_time)); | |
| 208 } | |
| 209 | |
| 210 void DeviceStatusCollector::TrimStoredActivityPeriods(int64 min_day_key, | |
| 211 int min_day_trim_duration, | |
| 212 int64 max_day_key) { | |
| 213 const base::DictionaryValue* activity_times = | |
| 214 local_state_->GetDictionary(prefs::kDeviceActivityTimes); | |
| 215 | |
| 216 scoped_ptr<base::DictionaryValue> copy(activity_times->DeepCopy()); | |
| 217 for (base::DictionaryValue::Iterator it(*activity_times); it.HasNext(); | |
| 218 it.Advance()) { | |
| 219 int64 timestamp; | |
| 220 if (base::StringToInt64(it.key(), ×tamp)) { | |
| 221 // Remove data that is too old, or too far in the future. | |
| 222 if (timestamp >= min_day_key && timestamp < max_day_key) { | |
| 223 if (timestamp == min_day_key) { | |
| 224 int new_activity_duration = 0; | |
| 225 if (it.value().GetAsInteger(&new_activity_duration)) { | |
| 226 new_activity_duration = | |
| 227 std::max(new_activity_duration - min_day_trim_duration, 0); | |
| 228 } | |
| 229 copy->SetInteger(it.key(), new_activity_duration); | |
| 230 } | |
| 231 continue; | |
| 232 } | |
| 233 } | |
| 234 // The entry is out of range or couldn't be parsed. Remove it. | |
| 235 copy->Remove(it.key(), NULL); | |
| 236 } | |
| 237 local_state_->Set(prefs::kDeviceActivityTimes, *copy); | |
| 238 } | |
| 239 | |
| 240 void DeviceStatusCollector::AddActivePeriod(Time start, Time end) { | |
| 241 DCHECK(start < end); | |
| 242 | |
| 243 // Maintain the list of active periods in a local_state pref. | |
| 244 DictionaryPrefUpdate update(local_state_, prefs::kDeviceActivityTimes); | |
| 245 base::DictionaryValue* activity_times = update.Get(); | |
| 246 | |
| 247 // Assign the period to day buckets in local time. | |
| 248 Time midnight = start.LocalMidnight(); | |
| 249 while (midnight < end) { | |
| 250 midnight += TimeDelta::FromDays(1); | |
| 251 int64 activity = (std::min(end, midnight) - start).InMilliseconds(); | |
| 252 std::string day_key = base::Int64ToString(TimestampToDayKey(start)); | |
| 253 int previous_activity = 0; | |
| 254 activity_times->GetInteger(day_key, &previous_activity); | |
| 255 activity_times->SetInteger(day_key, previous_activity + activity); | |
| 256 start = midnight; | |
| 257 } | |
| 258 } | |
| 259 | |
| 260 void DeviceStatusCollector::IdleStateCallback(IdleState state) { | |
| 261 // Do nothing if device activity reporting is disabled. | |
| 262 if (!report_activity_times_) | |
| 263 return; | |
| 264 | |
| 265 Time now = GetCurrentTime(); | |
| 266 | |
| 267 if (state == IDLE_STATE_ACTIVE) { | |
| 268 // If it's been too long since the last report, or if the activity is | |
| 269 // negative (which can happen when the clock changes), assume a single | |
| 270 // interval of activity. | |
| 271 int active_seconds = (now - last_idle_check_).InSeconds(); | |
| 272 if (active_seconds < 0 || | |
| 273 active_seconds >= static_cast<int>((2 * kIdlePollIntervalSeconds))) { | |
| 274 AddActivePeriod(now - TimeDelta::FromSeconds(kIdlePollIntervalSeconds), | |
| 275 now); | |
| 276 } else { | |
| 277 AddActivePeriod(last_idle_check_, now); | |
| 278 } | |
| 279 | |
| 280 PruneStoredActivityPeriods(now); | |
| 281 } | |
| 282 last_idle_check_ = now; | |
| 283 } | |
| 284 | |
| 285 void DeviceStatusCollector::GetActivityTimes( | |
| 286 em::DeviceStatusReportRequest* request) { | |
| 287 DictionaryPrefUpdate update(local_state_, prefs::kDeviceActivityTimes); | |
| 288 base::DictionaryValue* activity_times = update.Get(); | |
| 289 | |
| 290 for (base::DictionaryValue::key_iterator it = activity_times->begin_keys(); | |
| 291 it != activity_times->end_keys(); ++it) { | |
| 292 int64 start_timestamp; | |
| 293 int activity_milliseconds; | |
| 294 if (base::StringToInt64(*it, &start_timestamp) && | |
| 295 activity_times->GetInteger(*it, &activity_milliseconds)) { | |
| 296 // This is correct even when there are leap seconds, because when a leap | |
| 297 // second occurs, two consecutive seconds have the same timestamp. | |
| 298 int64 end_timestamp = start_timestamp + kMillisecondsPerDay; | |
| 299 | |
| 300 em::ActiveTimePeriod* active_period = request->add_active_period(); | |
| 301 em::TimePeriod* period = active_period->mutable_time_period(); | |
| 302 period->set_start_timestamp(start_timestamp); | |
| 303 period->set_end_timestamp(end_timestamp); | |
| 304 active_period->set_active_duration(activity_milliseconds); | |
| 305 if (start_timestamp >= last_reported_day_) { | |
| 306 last_reported_day_ = start_timestamp; | |
| 307 duration_for_last_reported_day_ = activity_milliseconds; | |
| 308 } | |
| 309 } else { | |
| 310 NOTREACHED(); | |
| 311 } | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 void DeviceStatusCollector::GetVersionInfo( | |
| 316 em::DeviceStatusReportRequest* request) { | |
| 317 chrome::VersionInfo version_info; | |
| 318 request->set_browser_version(version_info.Version()); | |
| 319 request->set_os_version(os_version_); | |
| 320 request->set_firmware_version(firmware_version_); | |
| 321 } | |
| 322 | |
| 323 void DeviceStatusCollector::GetBootMode( | |
| 324 em::DeviceStatusReportRequest* request) { | |
| 325 std::string dev_switch_mode; | |
| 326 if (statistics_provider_->GetMachineStatistic( | |
| 327 "devsw_boot", &dev_switch_mode)) { | |
| 328 if (dev_switch_mode == "1") | |
| 329 request->set_boot_mode("Dev"); | |
| 330 else if (dev_switch_mode == "0") | |
| 331 request->set_boot_mode("Verified"); | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 void DeviceStatusCollector::GetLocation( | |
| 336 em::DeviceStatusReportRequest* request) { | |
| 337 em::DeviceLocation* location = request->mutable_device_location(); | |
| 338 if (!position_.Validate()) { | |
| 339 location->set_error_code( | |
| 340 em::DeviceLocation::ERROR_CODE_POSITION_UNAVAILABLE); | |
| 341 location->set_error_message(position_.error_message); | |
| 342 } else { | |
| 343 location->set_latitude(position_.latitude); | |
| 344 location->set_longitude(position_.longitude); | |
| 345 location->set_accuracy(position_.accuracy); | |
| 346 location->set_timestamp( | |
| 347 (position_.timestamp - Time::UnixEpoch()).InMilliseconds()); | |
| 348 // Lowest point on land is at approximately -400 meters. | |
| 349 if (position_.altitude > -10000.) | |
| 350 location->set_altitude(position_.altitude); | |
| 351 if (position_.altitude_accuracy >= 0.) | |
| 352 location->set_altitude_accuracy(position_.altitude_accuracy); | |
| 353 if (position_.heading >= 0. && position_.heading <= 360) | |
| 354 location->set_heading(position_.heading); | |
| 355 if (position_.speed >= 0.) | |
| 356 location->set_speed(position_.speed); | |
| 357 location->set_error_code(em::DeviceLocation::ERROR_CODE_NONE); | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 void DeviceStatusCollector::GetStatus(em::DeviceStatusReportRequest* request) { | |
| 362 // TODO(mnissler): Remove once the old cloud policy stack is retired. The old | |
| 363 // stack doesn't support reporting successful submissions back to here, so | |
| 364 // just assume whatever ends up in |request| gets submitted successfully. | |
| 365 GetDeviceStatus(request); | |
| 366 OnSubmittedSuccessfully(); | |
| 367 } | |
| 368 | |
| 369 bool DeviceStatusCollector::GetDeviceStatus( | |
| 370 em::DeviceStatusReportRequest* status) { | |
| 371 if (report_activity_times_) | |
| 372 GetActivityTimes(status); | |
| 373 | |
| 374 if (report_version_info_) | |
| 375 GetVersionInfo(status); | |
| 376 | |
| 377 if (report_boot_mode_) | |
| 378 GetBootMode(status); | |
| 379 | |
| 380 if (report_location_) | |
| 381 GetLocation(status); | |
| 382 | |
| 383 return true; | |
| 384 } | |
| 385 | |
| 386 bool DeviceStatusCollector::GetSessionStatus( | |
| 387 em::SessionStatusReportRequest* status) { | |
| 388 return false; | |
| 389 } | |
| 390 | |
| 391 void DeviceStatusCollector::OnSubmittedSuccessfully() { | |
| 392 TrimStoredActivityPeriods(last_reported_day_, duration_for_last_reported_day_, | |
| 393 std::numeric_limits<int64>::max()); | |
| 394 } | |
| 395 | |
| 396 void DeviceStatusCollector::OnOSVersion(const std::string& version) { | |
| 397 os_version_ = version; | |
| 398 } | |
| 399 | |
| 400 void DeviceStatusCollector::OnOSFirmware(const std::string& version) { | |
| 401 firmware_version_ = version; | |
| 402 } | |
| 403 | |
| 404 void DeviceStatusCollector::Observe( | |
| 405 int type, | |
| 406 const content::NotificationSource& source, | |
| 407 const content::NotificationDetails& details) { | |
| 408 if (type == chrome::NOTIFICATION_SYSTEM_SETTING_CHANGED) | |
| 409 UpdateReportingSettings(); | |
| 410 else | |
| 411 NOTREACHED(); | |
| 412 } | |
| 413 | |
| 414 void DeviceStatusCollector::ScheduleGeolocationUpdateRequest() { | |
| 415 if (geolocation_update_timer_.IsRunning() || geolocation_update_in_progress_) | |
| 416 return; | |
| 417 | |
| 418 if (position_.Validate()) { | |
| 419 TimeDelta elapsed = GetCurrentTime() - position_.timestamp; | |
| 420 TimeDelta interval = | |
| 421 TimeDelta::FromSeconds(kGeolocationPollIntervalSeconds); | |
| 422 if (elapsed > interval) { | |
| 423 geolocation_update_in_progress_ = true; | |
| 424 location_update_requester_(base::Bind( | |
| 425 &DeviceStatusCollector::ReceiveGeolocationUpdate, | |
| 426 weak_factory_.GetWeakPtr())); | |
| 427 } else { | |
| 428 geolocation_update_timer_.Start( | |
| 429 FROM_HERE, | |
| 430 interval - elapsed, | |
| 431 this, | |
| 432 &DeviceStatusCollector::ScheduleGeolocationUpdateRequest); | |
| 433 } | |
| 434 } else { | |
| 435 geolocation_update_in_progress_ = true; | |
| 436 location_update_requester_(base::Bind( | |
| 437 &DeviceStatusCollector::ReceiveGeolocationUpdate, | |
| 438 weak_factory_.GetWeakPtr())); | |
| 439 | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 void DeviceStatusCollector::ReceiveGeolocationUpdate( | |
| 444 const content::Geoposition& position) { | |
| 445 geolocation_update_in_progress_ = false; | |
| 446 | |
| 447 // Ignore update if device location reporting has since been disabled. | |
| 448 if (!report_location_) | |
| 449 return; | |
| 450 | |
| 451 if (position.Validate()) { | |
| 452 position_ = position; | |
| 453 base::DictionaryValue location; | |
| 454 location.SetDouble(kLatitude, position.latitude); | |
| 455 location.SetDouble(kLongitude, position.longitude); | |
| 456 location.SetDouble(kAltitude, position.altitude); | |
| 457 location.SetDouble(kAccuracy, position.accuracy); | |
| 458 location.SetDouble(kAltitudeAccuracy, position.altitude_accuracy); | |
| 459 location.SetDouble(kHeading, position.heading); | |
| 460 location.SetDouble(kSpeed, position.speed); | |
| 461 location.SetString(kTimestamp, | |
| 462 base::Int64ToString(position.timestamp.ToInternalValue())); | |
| 463 local_state_->Set(prefs::kDeviceLocation, location); | |
| 464 } | |
| 465 | |
| 466 ScheduleGeolocationUpdateRequest(); | |
| 467 } | |
| 468 | |
| 469 } // namespace policy | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 12189011:
Split up chrome/browser/policy subdirectory (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src