| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 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/component_updater/component_updater_service.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <set> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/at_exit.h" | |
| 12 #include "base/bind.h" | |
| 13 #include "base/callback.h" | |
| 14 #include "base/compiler_specific.h" | |
| 15 #include "base/file_util.h" | |
| 16 #include "base/files/file_path.h" | |
| 17 #include "base/logging.h" | |
| 18 #include "base/memory/scoped_ptr.h" | |
| 19 #include "base/message_loop/message_loop_proxy.h" | |
| 20 #include "base/observer_list.h" | |
| 21 #include "base/sequenced_task_runner.h" | |
| 22 #include "base/stl_util.h" | |
| 23 #include "base/threading/sequenced_worker_pool.h" | |
| 24 #include "base/threading/thread_checker.h" | |
| 25 #include "base/timer/timer.h" | |
| 26 #include "chrome/browser/component_updater/component_patcher_operation.h" | |
| 27 #include "chrome/browser/component_updater/component_unpacker.h" | |
| 28 #include "chrome/browser/component_updater/component_updater_configurator.h" | |
| 29 #include "chrome/browser/component_updater/component_updater_ping_manager.h" | |
| 30 #include "chrome/browser/component_updater/component_updater_utils.h" | |
| 31 #include "chrome/browser/component_updater/crx_downloader.h" | |
| 32 #include "chrome/browser/component_updater/crx_update_item.h" | |
| 33 #include "chrome/browser/component_updater/update_checker.h" | |
| 34 #include "chrome/browser/component_updater/update_response.h" | |
| 35 #include "url/gurl.h" | |
| 36 | |
| 37 namespace component_updater { | |
| 38 | |
| 39 // The component updater is designed to live until process shutdown, so | |
| 40 // base::Bind() calls are not refcounted. | |
| 41 | |
| 42 namespace { | |
| 43 | |
| 44 // Returns true if the |proposed| version is newer than |current| version. | |
| 45 bool IsVersionNewer(const Version& current, const std::string& proposed) { | |
| 46 Version proposed_ver(proposed); | |
| 47 return proposed_ver.IsValid() && current.CompareTo(proposed_ver) < 0; | |
| 48 } | |
| 49 | |
| 50 // Returns true if a differential update is available, it has not failed yet, | |
| 51 // and the configuration allows it. | |
| 52 bool CanTryDiffUpdate(const CrxUpdateItem* update_item, | |
| 53 const Configurator& config) { | |
| 54 return HasDiffUpdate(update_item) && !update_item->diff_update_failed && | |
| 55 config.DeltasEnabled(); | |
| 56 } | |
| 57 | |
| 58 void AppendDownloadMetrics( | |
| 59 const std::vector<CrxDownloader::DownloadMetrics>& source, | |
| 60 std::vector<CrxDownloader::DownloadMetrics>* destination) { | |
| 61 destination->insert(destination->end(), source.begin(), source.end()); | |
| 62 } | |
| 63 | |
| 64 } // namespace | |
| 65 | |
| 66 CrxUpdateItem::CrxUpdateItem() | |
| 67 : status(kNew), | |
| 68 on_demand(false), | |
| 69 diff_update_failed(false), | |
| 70 error_category(0), | |
| 71 error_code(0), | |
| 72 extra_code1(0), | |
| 73 diff_error_category(0), | |
| 74 diff_error_code(0), | |
| 75 diff_extra_code1(0) { | |
| 76 } | |
| 77 | |
| 78 CrxUpdateItem::~CrxUpdateItem() { | |
| 79 } | |
| 80 | |
| 81 CrxComponent::CrxComponent() | |
| 82 : installer(NULL), allow_background_download(true) { | |
| 83 } | |
| 84 | |
| 85 CrxComponent::~CrxComponent() { | |
| 86 } | |
| 87 | |
| 88 ////////////////////////////////////////////////////////////////////////////// | |
| 89 // The one and only implementation of the ComponentUpdateService interface. In | |
| 90 // charge of running the show. The main method is ProcessPendingItems() which | |
| 91 // is called periodically to do the upgrades/installs or the update checks. | |
| 92 // An important consideration here is to be as "low impact" as we can to the | |
| 93 // rest of the browser, so even if we have many components registered and | |
| 94 // eligible for update, we only do one thing at a time with pauses in between | |
| 95 // the tasks. Also when we do network requests there is only one |url_fetcher_| | |
| 96 // in flight at a time. | |
| 97 // There are no locks in this code, the main structure |work_items_| is mutated | |
| 98 // only from the main thread. The unpack and installation is done in a blocking | |
| 99 // pool thread. The network requests are done in the IO thread or in the file | |
| 100 // thread. | |
| 101 class CrxUpdateService : public ComponentUpdateService, public OnDemandUpdater { | |
| 102 public: | |
| 103 explicit CrxUpdateService(Configurator* config); | |
| 104 virtual ~CrxUpdateService(); | |
| 105 | |
| 106 // Overrides for ComponentUpdateService. | |
| 107 virtual void AddObserver(Observer* observer) OVERRIDE; | |
| 108 virtual void RemoveObserver(Observer* observer) OVERRIDE; | |
| 109 virtual Status Start() OVERRIDE; | |
| 110 virtual Status Stop() OVERRIDE; | |
| 111 virtual Status RegisterComponent(const CrxComponent& component) OVERRIDE; | |
| 112 virtual std::vector<std::string> GetComponentIDs() const OVERRIDE; | |
| 113 virtual OnDemandUpdater& GetOnDemandUpdater() OVERRIDE; | |
| 114 virtual void MaybeThrottle(const std::string& crx_id, | |
| 115 const base::Closure& callback) OVERRIDE; | |
| 116 virtual scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner() | |
| 117 OVERRIDE; | |
| 118 | |
| 119 // Context for a crx download url request. | |
| 120 struct CRXContext { | |
| 121 ComponentInstaller* installer; | |
| 122 std::vector<uint8> pk_hash; | |
| 123 std::string id; | |
| 124 std::string fingerprint; | |
| 125 CRXContext() : installer(NULL) {} | |
| 126 }; | |
| 127 | |
| 128 private: | |
| 129 enum ErrorCategory { | |
| 130 kErrorNone = 0, | |
| 131 kNetworkError, | |
| 132 kUnpackError, | |
| 133 kInstallError, | |
| 134 }; | |
| 135 | |
| 136 enum StepDelayInterval { | |
| 137 kStepDelayShort = 0, | |
| 138 kStepDelayMedium, | |
| 139 kStepDelayLong, | |
| 140 }; | |
| 141 | |
| 142 // Overrides for ComponentUpdateService. | |
| 143 virtual bool GetComponentDetails(const std::string& component_id, | |
| 144 CrxUpdateItem* item) const OVERRIDE; | |
| 145 | |
| 146 // Overrides for OnDemandUpdater. | |
| 147 virtual Status OnDemandUpdate(const std::string& component_id) OVERRIDE; | |
| 148 | |
| 149 void UpdateCheckComplete(int error, | |
| 150 const std::string& error_message, | |
| 151 const UpdateResponse::Results& results); | |
| 152 void OnUpdateCheckSucceeded(const UpdateResponse::Results& results); | |
| 153 void OnUpdateCheckFailed(int error, const std::string& error_message); | |
| 154 | |
| 155 void DownloadProgress(const std::string& component_id, | |
| 156 const CrxDownloader::Result& download_result); | |
| 157 | |
| 158 void DownloadComplete(scoped_ptr<CRXContext> crx_context, | |
| 159 const CrxDownloader::Result& download_result); | |
| 160 | |
| 161 Status OnDemandUpdateInternal(CrxUpdateItem* item); | |
| 162 Status OnDemandUpdateWithCooldown(CrxUpdateItem* item); | |
| 163 | |
| 164 void ProcessPendingItems(); | |
| 165 | |
| 166 // Find a component that is ready to update. | |
| 167 CrxUpdateItem* FindReadyComponent() const; | |
| 168 | |
| 169 // Prepares the components for an update check and initiates the request. | |
| 170 // Returns true if an update check request has been made. Returns false if | |
| 171 // no update check was needed or an error occured. | |
| 172 bool CheckForUpdates(); | |
| 173 | |
| 174 void UpdateComponent(CrxUpdateItem* workitem); | |
| 175 | |
| 176 void ScheduleNextRun(StepDelayInterval step_delay); | |
| 177 | |
| 178 void ParseResponse(const std::string& xml); | |
| 179 | |
| 180 void Install(scoped_ptr<CRXContext> context, const base::FilePath& crx_path); | |
| 181 | |
| 182 void EndUnpacking(const std::string& component_id, | |
| 183 const base::FilePath& crx_path, | |
| 184 ComponentUnpacker::Error error, | |
| 185 int extended_error); | |
| 186 | |
| 187 void DoneInstalling(const std::string& component_id, | |
| 188 ComponentUnpacker::Error error, | |
| 189 int extended_error); | |
| 190 | |
| 191 void ChangeItemState(CrxUpdateItem* item, CrxUpdateItem::Status to); | |
| 192 | |
| 193 size_t ChangeItemStatus(CrxUpdateItem::Status from, CrxUpdateItem::Status to); | |
| 194 | |
| 195 CrxUpdateItem* FindUpdateItemById(const std::string& id) const; | |
| 196 | |
| 197 void NotifyObservers(Observer::Events event, const std::string& id); | |
| 198 | |
| 199 bool HasOnDemandItems() const; | |
| 200 | |
| 201 Status GetServiceStatus(const CrxUpdateItem::Status status); | |
| 202 | |
| 203 scoped_ptr<Configurator> config_; | |
| 204 | |
| 205 scoped_ptr<UpdateChecker> update_checker_; | |
| 206 | |
| 207 scoped_ptr<PingManager> ping_manager_; | |
| 208 | |
| 209 scoped_refptr<ComponentUnpacker> unpacker_; | |
| 210 | |
| 211 scoped_ptr<CrxDownloader> crx_downloader_; | |
| 212 | |
| 213 // A collection of every work item. | |
| 214 typedef std::vector<CrxUpdateItem*> UpdateItems; | |
| 215 UpdateItems work_items_; | |
| 216 | |
| 217 base::OneShotTimer<CrxUpdateService> timer_; | |
| 218 | |
| 219 base::ThreadChecker thread_checker_; | |
| 220 | |
| 221 // Used to post responses back to the main thread. | |
| 222 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_; | |
| 223 | |
| 224 scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_; | |
| 225 | |
| 226 bool running_; | |
| 227 | |
| 228 ObserverList<Observer> observer_list_; | |
| 229 | |
| 230 DISALLOW_COPY_AND_ASSIGN(CrxUpdateService); | |
| 231 }; | |
| 232 | |
| 233 ////////////////////////////////////////////////////////////////////////////// | |
| 234 | |
| 235 CrxUpdateService::CrxUpdateService(Configurator* config) | |
| 236 : config_(config), | |
| 237 ping_manager_(new PingManager(*config)), | |
| 238 main_task_runner_(base::MessageLoopProxy::current()), | |
| 239 blocking_task_runner_(config->GetSequencedTaskRunner()), | |
| 240 running_(false) { | |
| 241 } | |
| 242 | |
| 243 CrxUpdateService::~CrxUpdateService() { | |
| 244 // Because we are a singleton, at this point only the main thread should be | |
| 245 // alive, this simplifies the management of the work that could be in | |
| 246 // flight in other threads. | |
| 247 Stop(); | |
| 248 STLDeleteElements(&work_items_); | |
| 249 } | |
| 250 | |
| 251 void CrxUpdateService::AddObserver(Observer* observer) { | |
| 252 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 253 observer_list_.AddObserver(observer); | |
| 254 } | |
| 255 | |
| 256 void CrxUpdateService::RemoveObserver(Observer* observer) { | |
| 257 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 258 observer_list_.RemoveObserver(observer); | |
| 259 } | |
| 260 | |
| 261 ComponentUpdateService::Status CrxUpdateService::Start() { | |
| 262 // Note that RegisterComponent will call Start() when the first | |
| 263 // component is registered, so it can be called twice. This way | |
| 264 // we avoid scheduling the timer if there is no work to do. | |
| 265 VLOG(1) << "CrxUpdateService starting up"; | |
| 266 running_ = true; | |
| 267 if (work_items_.empty()) | |
| 268 return kOk; | |
| 269 | |
| 270 NotifyObservers(Observer::COMPONENT_UPDATER_STARTED, ""); | |
| 271 | |
| 272 VLOG(1) << "First update attempt will take place in " | |
| 273 << config_->InitialDelay() << " seconds"; | |
| 274 timer_.Start(FROM_HERE, | |
| 275 base::TimeDelta::FromSeconds(config_->InitialDelay()), | |
| 276 this, | |
| 277 &CrxUpdateService::ProcessPendingItems); | |
| 278 return kOk; | |
| 279 } | |
| 280 | |
| 281 // Stop the main check + update loop. In flight operations will be | |
| 282 // completed. | |
| 283 ComponentUpdateService::Status CrxUpdateService::Stop() { | |
| 284 VLOG(1) << "CrxUpdateService stopping"; | |
| 285 running_ = false; | |
| 286 timer_.Stop(); | |
| 287 return kOk; | |
| 288 } | |
| 289 | |
| 290 bool CrxUpdateService::HasOnDemandItems() const { | |
| 291 class Helper { | |
| 292 public: | |
| 293 static bool IsOnDemand(CrxUpdateItem* item) { return item->on_demand; } | |
| 294 }; | |
| 295 return std::find_if(work_items_.begin(), | |
| 296 work_items_.end(), | |
| 297 Helper::IsOnDemand) != work_items_.end(); | |
| 298 } | |
| 299 | |
| 300 // This function sets the timer which will call ProcessPendingItems() or | |
| 301 // ProcessRequestedItem() if there is an on_demand item. There | |
| 302 // are three kinds of waits: | |
| 303 // - a short delay, when there is immediate work to be done. | |
| 304 // - a medium delay, when there are updates to be applied within the current | |
| 305 // update cycle, or there are components that are still unchecked. | |
| 306 // - a long delay when a full check/update cycle has completed for all | |
| 307 // components. | |
| 308 void CrxUpdateService::ScheduleNextRun(StepDelayInterval step_delay) { | |
| 309 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 310 DCHECK(!update_checker_); | |
| 311 CHECK(!timer_.IsRunning()); | |
| 312 // It could be the case that Stop() had been called while a url request | |
| 313 // or unpacking was in flight, if so we arrive here but |running_| is | |
| 314 // false. In that case do not loop again. | |
| 315 if (!running_) | |
| 316 return; | |
| 317 | |
| 318 // Keep the delay short if in the middle of an update (step_delay), | |
| 319 // or there are new requested_work_items_ that have not been processed yet. | |
| 320 int64 delay_seconds = 0; | |
| 321 if (!HasOnDemandItems()) { | |
| 322 switch (step_delay) { | |
| 323 case kStepDelayShort: | |
| 324 delay_seconds = config_->StepDelay(); | |
| 325 break; | |
| 326 case kStepDelayMedium: | |
| 327 delay_seconds = config_->StepDelayMedium(); | |
| 328 break; | |
| 329 case kStepDelayLong: | |
| 330 delay_seconds = config_->NextCheckDelay(); | |
| 331 break; | |
| 332 } | |
| 333 } else { | |
| 334 delay_seconds = config_->StepDelay(); | |
| 335 } | |
| 336 | |
| 337 if (step_delay != kStepDelayShort) { | |
| 338 NotifyObservers(Observer::COMPONENT_UPDATER_SLEEPING, ""); | |
| 339 | |
| 340 // Zero is only used for unit tests. | |
| 341 if (0 == delay_seconds) | |
| 342 return; | |
| 343 } | |
| 344 | |
| 345 VLOG(1) << "Scheduling next run to occur in " << delay_seconds << " seconds"; | |
| 346 timer_.Start(FROM_HERE, | |
| 347 base::TimeDelta::FromSeconds(delay_seconds), | |
| 348 this, | |
| 349 &CrxUpdateService::ProcessPendingItems); | |
| 350 } | |
| 351 | |
| 352 // Given a extension-like component id, find the associated component. | |
| 353 CrxUpdateItem* CrxUpdateService::FindUpdateItemById( | |
| 354 const std::string& id) const { | |
| 355 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 356 CrxUpdateItem::FindById finder(id); | |
| 357 UpdateItems::const_iterator it = | |
| 358 std::find_if(work_items_.begin(), work_items_.end(), finder); | |
| 359 return it != work_items_.end() ? *it : NULL; | |
| 360 } | |
| 361 | |
| 362 // Changes a component's status, clearing on_demand and firing notifications as | |
| 363 // necessary. By convention, this is the only function that can change a | |
| 364 // CrxUpdateItem's |status|. | |
| 365 // TODO(waffles): Do we want to add DCHECKS for valid state transitions here? | |
| 366 void CrxUpdateService::ChangeItemState(CrxUpdateItem* item, | |
| 367 CrxUpdateItem::Status to) { | |
| 368 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 369 if (to == CrxUpdateItem::kNoUpdate || to == CrxUpdateItem::kUpdated || | |
| 370 to == CrxUpdateItem::kUpToDate) { | |
| 371 item->on_demand = false; | |
| 372 } | |
| 373 | |
| 374 item->status = to; | |
| 375 | |
| 376 switch (to) { | |
| 377 case CrxUpdateItem::kCanUpdate: | |
| 378 NotifyObservers(Observer::COMPONENT_UPDATE_FOUND, item->id); | |
| 379 break; | |
| 380 case CrxUpdateItem::kUpdatingDiff: | |
| 381 case CrxUpdateItem::kUpdating: | |
| 382 NotifyObservers(Observer::COMPONENT_UPDATE_READY, item->id); | |
| 383 break; | |
| 384 case CrxUpdateItem::kUpdated: | |
| 385 NotifyObservers(Observer::COMPONENT_UPDATED, item->id); | |
| 386 break; | |
| 387 case CrxUpdateItem::kUpToDate: | |
| 388 case CrxUpdateItem::kNoUpdate: | |
| 389 NotifyObservers(Observer::COMPONENT_NOT_UPDATED, item->id); | |
| 390 break; | |
| 391 case CrxUpdateItem::kNew: | |
| 392 case CrxUpdateItem::kChecking: | |
| 393 case CrxUpdateItem::kDownloading: | |
| 394 case CrxUpdateItem::kDownloadingDiff: | |
| 395 case CrxUpdateItem::kLastStatus: | |
| 396 // No notification for these states. | |
| 397 break; | |
| 398 } | |
| 399 | |
| 400 // Free possible pending network requests. | |
| 401 if ((to == CrxUpdateItem::kUpdated) || (to == CrxUpdateItem::kUpToDate) || | |
| 402 (to == CrxUpdateItem::kNoUpdate)) { | |
| 403 for (std::vector<base::Closure>::iterator it = | |
| 404 item->ready_callbacks.begin(); | |
| 405 it != item->ready_callbacks.end(); | |
| 406 ++it) { | |
| 407 it->Run(); | |
| 408 } | |
| 409 item->ready_callbacks.clear(); | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 // Changes all the components in |work_items_| that have |from| status to | |
| 414 // |to| status and returns how many have been changed. | |
| 415 size_t CrxUpdateService::ChangeItemStatus(CrxUpdateItem::Status from, | |
| 416 CrxUpdateItem::Status to) { | |
| 417 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 418 size_t count = 0; | |
| 419 for (UpdateItems::iterator it = work_items_.begin(); | |
| 420 it != work_items_.end(); | |
| 421 ++it) { | |
| 422 CrxUpdateItem* item = *it; | |
| 423 if (item->status == from) { | |
| 424 ChangeItemState(item, to); | |
| 425 ++count; | |
| 426 } | |
| 427 } | |
| 428 return count; | |
| 429 } | |
| 430 | |
| 431 // Adds a component to be checked for upgrades. If the component exists it | |
| 432 // it will be replaced and the return code is kReplaced. | |
| 433 ComponentUpdateService::Status CrxUpdateService::RegisterComponent( | |
| 434 const CrxComponent& component) { | |
| 435 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 436 if (component.pk_hash.empty() || !component.version.IsValid() || | |
| 437 !component.installer) | |
| 438 return kError; | |
| 439 | |
| 440 std::string id(GetCrxComponentID(component)); | |
| 441 CrxUpdateItem* uit = FindUpdateItemById(id); | |
| 442 if (uit) { | |
| 443 uit->component = component; | |
| 444 return kReplaced; | |
| 445 } | |
| 446 | |
| 447 uit = new CrxUpdateItem; | |
| 448 uit->id.swap(id); | |
| 449 uit->component = component; | |
| 450 | |
| 451 work_items_.push_back(uit); | |
| 452 | |
| 453 // If this is the first component registered we call Start to | |
| 454 // schedule the first timer. Otherwise, reset the timer to trigger another | |
| 455 // pass over the work items, if the component updater is sleeping, fact | |
| 456 // indicated by a running timer. If the timer is not running, it means that | |
| 457 // the service is busy updating something, and in that case, this component | |
| 458 // will be picked up at the next pass. | |
| 459 if (running_) { | |
| 460 if (work_items_.size() == 1) { | |
| 461 Start(); | |
| 462 } else if (timer_.IsRunning()) { | |
| 463 timer_.Start(FROM_HERE, | |
| 464 base::TimeDelta::FromSeconds(config_->InitialDelay()), | |
| 465 this, | |
| 466 &CrxUpdateService::ProcessPendingItems); | |
| 467 } | |
| 468 } | |
| 469 | |
| 470 return kOk; | |
| 471 } | |
| 472 | |
| 473 std::vector<std::string> CrxUpdateService::GetComponentIDs() const { | |
| 474 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 475 std::vector<std::string> component_ids; | |
| 476 for (UpdateItems::const_iterator it = work_items_.begin(); | |
| 477 it != work_items_.end(); | |
| 478 ++it) { | |
| 479 const CrxUpdateItem* item = *it; | |
| 480 component_ids.push_back(item->id); | |
| 481 } | |
| 482 return component_ids; | |
| 483 } | |
| 484 | |
| 485 OnDemandUpdater& CrxUpdateService::GetOnDemandUpdater() { | |
| 486 return *this; | |
| 487 } | |
| 488 | |
| 489 void CrxUpdateService::MaybeThrottle(const std::string& crx_id, | |
| 490 const base::Closure& callback) { | |
| 491 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 492 // Check if we can on-demand update, else unblock the request anyway. | |
| 493 CrxUpdateItem* item = FindUpdateItemById(crx_id); | |
| 494 Status status = OnDemandUpdateWithCooldown(item); | |
| 495 if (status == kOk || status == kInProgress) { | |
| 496 item->ready_callbacks.push_back(callback); | |
| 497 return; | |
| 498 } | |
| 499 callback.Run(); | |
| 500 } | |
| 501 | |
| 502 scoped_refptr<base::SequencedTaskRunner> | |
| 503 CrxUpdateService::GetSequencedTaskRunner() { | |
| 504 return config_->GetSequencedTaskRunner(); | |
| 505 } | |
| 506 | |
| 507 bool CrxUpdateService::GetComponentDetails(const std::string& component_id, | |
| 508 CrxUpdateItem* item) const { | |
| 509 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 510 const CrxUpdateItem* crx_update_item(FindUpdateItemById(component_id)); | |
| 511 if (crx_update_item) | |
| 512 *item = *crx_update_item; | |
| 513 return crx_update_item != NULL; | |
| 514 } | |
| 515 | |
| 516 // Start the process of checking for an update, for a particular component | |
| 517 // that was previously registered. | |
| 518 // |component_id| is a value returned from GetCrxComponentID(). | |
| 519 ComponentUpdateService::Status CrxUpdateService::OnDemandUpdate( | |
| 520 const std::string& component_id) { | |
| 521 return OnDemandUpdateInternal(FindUpdateItemById(component_id)); | |
| 522 } | |
| 523 | |
| 524 // This is the main loop of the component updater. It updates one component | |
| 525 // at a time if updates are available. Otherwise, it does an update check or | |
| 526 // takes a long sleep until the loop runs again. | |
| 527 void CrxUpdateService::ProcessPendingItems() { | |
| 528 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 529 | |
| 530 CrxUpdateItem* ready_upgrade = FindReadyComponent(); | |
| 531 if (ready_upgrade) { | |
| 532 UpdateComponent(ready_upgrade); | |
| 533 return; | |
| 534 } | |
| 535 | |
| 536 if (!CheckForUpdates()) | |
| 537 ScheduleNextRun(kStepDelayLong); | |
| 538 } | |
| 539 | |
| 540 CrxUpdateItem* CrxUpdateService::FindReadyComponent() const { | |
| 541 class Helper { | |
| 542 public: | |
| 543 static bool IsReadyOnDemand(CrxUpdateItem* item) { | |
| 544 return item->on_demand && IsReady(item); | |
| 545 } | |
| 546 static bool IsReady(CrxUpdateItem* item) { | |
| 547 return item->status == CrxUpdateItem::kCanUpdate; | |
| 548 } | |
| 549 }; | |
| 550 | |
| 551 std::vector<CrxUpdateItem*>::const_iterator it = std::find_if( | |
| 552 work_items_.begin(), work_items_.end(), Helper::IsReadyOnDemand); | |
| 553 if (it != work_items_.end()) | |
| 554 return *it; | |
| 555 it = std::find_if(work_items_.begin(), work_items_.end(), Helper::IsReady); | |
| 556 if (it != work_items_.end()) | |
| 557 return *it; | |
| 558 return NULL; | |
| 559 } | |
| 560 | |
| 561 // Prepares the components for an update check and initiates the request. | |
| 562 // On demand components are always included in the update check request. | |
| 563 // Otherwise, only include components that have not been checked recently. | |
| 564 bool CrxUpdateService::CheckForUpdates() { | |
| 565 const base::TimeDelta minimum_recheck_wait_time = | |
| 566 base::TimeDelta::FromSeconds(config_->MinimumReCheckWait()); | |
| 567 const base::Time now(base::Time::Now()); | |
| 568 | |
| 569 std::vector<CrxUpdateItem*> items_to_check; | |
| 570 for (size_t i = 0; i != work_items_.size(); ++i) { | |
| 571 CrxUpdateItem* item = work_items_[i]; | |
| 572 DCHECK(item->status == CrxUpdateItem::kNew || | |
| 573 item->status == CrxUpdateItem::kNoUpdate || | |
| 574 item->status == CrxUpdateItem::kUpToDate || | |
| 575 item->status == CrxUpdateItem::kUpdated); | |
| 576 | |
| 577 const base::TimeDelta time_since_last_checked(now - item->last_check); | |
| 578 | |
| 579 if (!item->on_demand && | |
| 580 time_since_last_checked < minimum_recheck_wait_time) { | |
| 581 VLOG(1) << "Skipping check for component update: id=" << item->id | |
| 582 << ", time_since_last_checked=" | |
| 583 << time_since_last_checked.InSeconds() | |
| 584 << " seconds: too soon to check for an update"; | |
| 585 continue; | |
| 586 } | |
| 587 | |
| 588 VLOG(1) << "Scheduling update check for component id=" << item->id | |
| 589 << ", time_since_last_checked=" | |
| 590 << time_since_last_checked.InSeconds() << " seconds"; | |
| 591 | |
| 592 item->last_check = now; | |
| 593 item->crx_urls.clear(); | |
| 594 item->crx_diffurls.clear(); | |
| 595 item->previous_version = item->component.version; | |
| 596 item->next_version = Version(); | |
| 597 item->previous_fp = item->component.fingerprint; | |
| 598 item->next_fp.clear(); | |
| 599 item->diff_update_failed = false; | |
| 600 item->error_category = 0; | |
| 601 item->error_code = 0; | |
| 602 item->extra_code1 = 0; | |
| 603 item->diff_error_category = 0; | |
| 604 item->diff_error_code = 0; | |
| 605 item->diff_extra_code1 = 0; | |
| 606 item->download_metrics.clear(); | |
| 607 | |
| 608 items_to_check.push_back(item); | |
| 609 | |
| 610 ChangeItemState(item, CrxUpdateItem::kChecking); | |
| 611 } | |
| 612 | |
| 613 if (items_to_check.empty()) | |
| 614 return false; | |
| 615 | |
| 616 update_checker_ = | |
| 617 UpdateChecker::Create(*config_, | |
| 618 base::Bind(&CrxUpdateService::UpdateCheckComplete, | |
| 619 base::Unretained(this))).Pass(); | |
| 620 return update_checker_->CheckForUpdates(items_to_check, | |
| 621 config_->ExtraRequestParams()); | |
| 622 } | |
| 623 | |
| 624 void CrxUpdateService::UpdateComponent(CrxUpdateItem* workitem) { | |
| 625 scoped_ptr<CRXContext> crx_context(new CRXContext); | |
| 626 crx_context->pk_hash = workitem->component.pk_hash; | |
| 627 crx_context->id = workitem->id; | |
| 628 crx_context->installer = workitem->component.installer; | |
| 629 crx_context->fingerprint = workitem->next_fp; | |
| 630 const std::vector<GURL>* urls = NULL; | |
| 631 bool allow_background_download = false; | |
| 632 if (CanTryDiffUpdate(workitem, *config_)) { | |
| 633 urls = &workitem->crx_diffurls; | |
| 634 ChangeItemState(workitem, CrxUpdateItem::kDownloadingDiff); | |
| 635 } else { | |
| 636 // Background downloads are enabled only for selected components and | |
| 637 // only for full downloads (see issue 340448). | |
| 638 allow_background_download = workitem->component.allow_background_download; | |
| 639 urls = &workitem->crx_urls; | |
| 640 ChangeItemState(workitem, CrxUpdateItem::kDownloading); | |
| 641 } | |
| 642 | |
| 643 // On demand component updates are always downloaded in foreground. | |
| 644 const bool is_background_download = !workitem->on_demand && | |
| 645 allow_background_download && | |
| 646 config_->UseBackgroundDownloader(); | |
| 647 | |
| 648 crx_downloader_.reset( | |
| 649 CrxDownloader::Create(is_background_download, | |
| 650 config_->RequestContext(), | |
| 651 blocking_task_runner_, | |
| 652 config_->GetSingleThreadTaskRunner())); | |
| 653 crx_downloader_->set_progress_callback( | |
| 654 base::Bind(&CrxUpdateService::DownloadProgress, | |
| 655 base::Unretained(this), | |
| 656 crx_context->id)); | |
| 657 crx_downloader_->StartDownload(*urls, | |
| 658 base::Bind(&CrxUpdateService::DownloadComplete, | |
| 659 base::Unretained(this), | |
| 660 base::Passed(&crx_context))); | |
| 661 } | |
| 662 | |
| 663 void CrxUpdateService::UpdateCheckComplete( | |
| 664 int error, | |
| 665 const std::string& error_message, | |
| 666 const UpdateResponse::Results& results) { | |
| 667 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 668 update_checker_.reset(); | |
| 669 if (!error) | |
| 670 OnUpdateCheckSucceeded(results); | |
| 671 else | |
| 672 OnUpdateCheckFailed(error, error_message); | |
| 673 } | |
| 674 | |
| 675 // Handles a valid Omaha update check response by matching the results with | |
| 676 // the registered components which were checked for updates. | |
| 677 // If updates are found, prepare the components for the actual version upgrade. | |
| 678 // One of these components will be drafted for the upgrade next time | |
| 679 // ProcessPendingItems is called. | |
| 680 void CrxUpdateService::OnUpdateCheckSucceeded( | |
| 681 const UpdateResponse::Results& results) { | |
| 682 size_t num_updates_pending = 0; | |
| 683 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 684 VLOG(1) << "Update check succeeded."; | |
| 685 std::vector<UpdateResponse::Result>::const_iterator it; | |
| 686 for (it = results.list.begin(); it != results.list.end(); ++it) { | |
| 687 CrxUpdateItem* crx = FindUpdateItemById(it->extension_id); | |
| 688 if (!crx) | |
| 689 continue; | |
| 690 | |
| 691 if (crx->status != CrxUpdateItem::kChecking) { | |
| 692 NOTREACHED(); | |
| 693 continue; // Not updating this component now. | |
| 694 } | |
| 695 | |
| 696 if (it->manifest.version.empty()) { | |
| 697 // No version means no update available. | |
| 698 ChangeItemState(crx, CrxUpdateItem::kNoUpdate); | |
| 699 VLOG(1) << "No update available for component: " << crx->id; | |
| 700 continue; | |
| 701 } | |
| 702 | |
| 703 if (!IsVersionNewer(crx->component.version, it->manifest.version)) { | |
| 704 // The component is up to date. | |
| 705 ChangeItemState(crx, CrxUpdateItem::kUpToDate); | |
| 706 VLOG(1) << "Component already up-to-date: " << crx->id; | |
| 707 continue; | |
| 708 } | |
| 709 | |
| 710 if (!it->manifest.browser_min_version.empty()) { | |
| 711 if (IsVersionNewer(config_->GetBrowserVersion(), | |
| 712 it->manifest.browser_min_version)) { | |
| 713 // The component is not compatible with this Chrome version. | |
| 714 VLOG(1) << "Ignoring incompatible component: " << crx->id; | |
| 715 ChangeItemState(crx, CrxUpdateItem::kNoUpdate); | |
| 716 continue; | |
| 717 } | |
| 718 } | |
| 719 | |
| 720 if (it->manifest.packages.size() != 1) { | |
| 721 // Assume one and only one package per component. | |
| 722 VLOG(1) << "Ignoring multiple packages for component: " << crx->id; | |
| 723 ChangeItemState(crx, CrxUpdateItem::kNoUpdate); | |
| 724 continue; | |
| 725 } | |
| 726 | |
| 727 // Parse the members of the result and queue an upgrade for this component. | |
| 728 crx->next_version = Version(it->manifest.version); | |
| 729 | |
| 730 VLOG(1) << "Update found for component: " << crx->id; | |
| 731 | |
| 732 typedef UpdateResponse::Result::Manifest::Package Package; | |
| 733 const Package& package(it->manifest.packages[0]); | |
| 734 crx->next_fp = package.fingerprint; | |
| 735 | |
| 736 // Resolve the urls by combining the base urls with the package names. | |
| 737 for (size_t i = 0; i != it->crx_urls.size(); ++i) { | |
| 738 const GURL url(it->crx_urls[i].Resolve(package.name)); | |
| 739 if (url.is_valid()) | |
| 740 crx->crx_urls.push_back(url); | |
| 741 } | |
| 742 for (size_t i = 0; i != it->crx_diffurls.size(); ++i) { | |
| 743 const GURL url(it->crx_diffurls[i].Resolve(package.namediff)); | |
| 744 if (url.is_valid()) | |
| 745 crx->crx_diffurls.push_back(url); | |
| 746 } | |
| 747 | |
| 748 ChangeItemState(crx, CrxUpdateItem::kCanUpdate); | |
| 749 ++num_updates_pending; | |
| 750 } | |
| 751 | |
| 752 // All components that are not included in the update response are | |
| 753 // considered up to date. | |
| 754 ChangeItemStatus(CrxUpdateItem::kChecking, CrxUpdateItem::kUpToDate); | |
| 755 | |
| 756 // If there are updates pending we do a short wait, otherwise we take | |
| 757 // a longer delay until we check the components again. | |
| 758 ScheduleNextRun(num_updates_pending > 0 ? kStepDelayShort : kStepDelayLong); | |
| 759 } | |
| 760 | |
| 761 void CrxUpdateService::OnUpdateCheckFailed(int error, | |
| 762 const std::string& error_message) { | |
| 763 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 764 DCHECK(error); | |
| 765 size_t count = | |
| 766 ChangeItemStatus(CrxUpdateItem::kChecking, CrxUpdateItem::kNoUpdate); | |
| 767 DCHECK_GT(count, 0ul); | |
| 768 VLOG(1) << "Update check failed."; | |
| 769 ScheduleNextRun(kStepDelayLong); | |
| 770 } | |
| 771 | |
| 772 // Called when progress is being made downloading a CRX. The progress may | |
| 773 // not monotonically increase due to how the CRX downloader switches between | |
| 774 // different downloaders and fallback urls. | |
| 775 void CrxUpdateService::DownloadProgress( | |
| 776 const std::string& component_id, | |
| 777 const CrxDownloader::Result& download_result) { | |
| 778 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 779 NotifyObservers(Observer::COMPONENT_UPDATE_DOWNLOADING, component_id); | |
| 780 } | |
| 781 | |
| 782 // Called when the CRX package has been downloaded to a temporary location. | |
| 783 // Here we fire the notifications and schedule the component-specific installer | |
| 784 // to be called in the file thread. | |
| 785 void CrxUpdateService::DownloadComplete( | |
| 786 scoped_ptr<CRXContext> crx_context, | |
| 787 const CrxDownloader::Result& download_result) { | |
| 788 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 789 | |
| 790 CrxUpdateItem* crx = FindUpdateItemById(crx_context->id); | |
| 791 DCHECK(crx->status == CrxUpdateItem::kDownloadingDiff || | |
| 792 crx->status == CrxUpdateItem::kDownloading); | |
| 793 | |
| 794 AppendDownloadMetrics(crx_downloader_->download_metrics(), | |
| 795 &crx->download_metrics); | |
| 796 | |
| 797 crx_downloader_.reset(); | |
| 798 | |
| 799 if (download_result.error) { | |
| 800 if (crx->status == CrxUpdateItem::kDownloadingDiff) { | |
| 801 crx->diff_error_category = kNetworkError; | |
| 802 crx->diff_error_code = download_result.error; | |
| 803 crx->diff_update_failed = true; | |
| 804 size_t count = ChangeItemStatus(CrxUpdateItem::kDownloadingDiff, | |
| 805 CrxUpdateItem::kCanUpdate); | |
| 806 DCHECK_EQ(count, 1ul); | |
| 807 | |
| 808 ScheduleNextRun(kStepDelayShort); | |
| 809 return; | |
| 810 } | |
| 811 crx->error_category = kNetworkError; | |
| 812 crx->error_code = download_result.error; | |
| 813 size_t count = | |
| 814 ChangeItemStatus(CrxUpdateItem::kDownloading, CrxUpdateItem::kNoUpdate); | |
| 815 DCHECK_EQ(count, 1ul); | |
| 816 | |
| 817 // At this point, since both the differential and the full downloads failed, | |
| 818 // the update for this component has finished with an error. | |
| 819 ping_manager_->OnUpdateComplete(crx); | |
| 820 | |
| 821 // Move on to the next update, if there is one available. | |
| 822 ScheduleNextRun(kStepDelayMedium); | |
| 823 } else { | |
| 824 size_t count = 0; | |
| 825 if (crx->status == CrxUpdateItem::kDownloadingDiff) { | |
| 826 count = ChangeItemStatus(CrxUpdateItem::kDownloadingDiff, | |
| 827 CrxUpdateItem::kUpdatingDiff); | |
| 828 } else { | |
| 829 count = ChangeItemStatus(CrxUpdateItem::kDownloading, | |
| 830 CrxUpdateItem::kUpdating); | |
| 831 } | |
| 832 DCHECK_EQ(count, 1ul); | |
| 833 | |
| 834 // Why unretained? See comment at top of file. | |
| 835 blocking_task_runner_->PostDelayedTask( | |
| 836 FROM_HERE, | |
| 837 base::Bind(&CrxUpdateService::Install, | |
| 838 base::Unretained(this), | |
| 839 base::Passed(&crx_context), | |
| 840 download_result.response), | |
| 841 base::TimeDelta::FromMilliseconds(config_->StepDelay())); | |
| 842 } | |
| 843 } | |
| 844 | |
| 845 // Install consists of digital signature verification, unpacking and then | |
| 846 // calling the component specific installer. All that is handled by the | |
| 847 // |unpacker_|. If there is an error this function is in charge of deleting | |
| 848 // the files created. | |
| 849 void CrxUpdateService::Install(scoped_ptr<CRXContext> context, | |
| 850 const base::FilePath& crx_path) { | |
| 851 // This function owns the file at |crx_path| and the |context| object. | |
| 852 unpacker_ = new ComponentUnpacker(context->pk_hash, | |
| 853 crx_path, | |
| 854 context->fingerprint, | |
| 855 context->installer, | |
| 856 config_->CreateOutOfProcessPatcher(), | |
| 857 blocking_task_runner_); | |
| 858 unpacker_->Unpack(base::Bind(&CrxUpdateService::EndUnpacking, | |
| 859 base::Unretained(this), | |
| 860 context->id, | |
| 861 crx_path)); | |
| 862 } | |
| 863 | |
| 864 void CrxUpdateService::EndUnpacking(const std::string& component_id, | |
| 865 const base::FilePath& crx_path, | |
| 866 ComponentUnpacker::Error error, | |
| 867 int extended_error) { | |
| 868 if (!DeleteFileAndEmptyParentDirectory(crx_path)) | |
| 869 NOTREACHED() << crx_path.value(); | |
| 870 main_task_runner_->PostDelayedTask( | |
| 871 FROM_HERE, | |
| 872 base::Bind(&CrxUpdateService::DoneInstalling, | |
| 873 base::Unretained(this), | |
| 874 component_id, | |
| 875 error, | |
| 876 extended_error), | |
| 877 base::TimeDelta::FromMilliseconds(config_->StepDelay())); | |
| 878 // Reset the unpacker last, otherwise we free our own arguments. | |
| 879 unpacker_ = NULL; | |
| 880 } | |
| 881 | |
| 882 // Installation has been completed. Adjust the component status and | |
| 883 // schedule the next check. Schedule a short delay before trying the full | |
| 884 // update when the differential update failed. | |
| 885 void CrxUpdateService::DoneInstalling(const std::string& component_id, | |
| 886 ComponentUnpacker::Error error, | |
| 887 int extra_code) { | |
| 888 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 889 | |
| 890 ErrorCategory error_category = kErrorNone; | |
| 891 switch (error) { | |
| 892 case ComponentUnpacker::kNone: | |
| 893 break; | |
| 894 case ComponentUnpacker::kInstallerError: | |
| 895 error_category = kInstallError; | |
| 896 break; | |
| 897 default: | |
| 898 error_category = kUnpackError; | |
| 899 break; | |
| 900 } | |
| 901 | |
| 902 const bool is_success = error == ComponentUnpacker::kNone; | |
| 903 | |
| 904 CrxUpdateItem* item = FindUpdateItemById(component_id); | |
| 905 if (item->status == CrxUpdateItem::kUpdatingDiff && !is_success) { | |
| 906 item->diff_error_category = error_category; | |
| 907 item->diff_error_code = error; | |
| 908 item->diff_extra_code1 = extra_code; | |
| 909 item->diff_update_failed = true; | |
| 910 size_t count = ChangeItemStatus(CrxUpdateItem::kUpdatingDiff, | |
| 911 CrxUpdateItem::kCanUpdate); | |
| 912 DCHECK_EQ(count, 1ul); | |
| 913 ScheduleNextRun(kStepDelayShort); | |
| 914 return; | |
| 915 } | |
| 916 | |
| 917 if (is_success) { | |
| 918 item->component.version = item->next_version; | |
| 919 item->component.fingerprint = item->next_fp; | |
| 920 ChangeItemState(item, CrxUpdateItem::kUpdated); | |
| 921 } else { | |
| 922 item->error_category = error_category; | |
| 923 item->error_code = error; | |
| 924 item->extra_code1 = extra_code; | |
| 925 ChangeItemState(item, CrxUpdateItem::kNoUpdate); | |
| 926 } | |
| 927 | |
| 928 ping_manager_->OnUpdateComplete(item); | |
| 929 | |
| 930 // Move on to the next update, if there is one available. | |
| 931 ScheduleNextRun(kStepDelayMedium); | |
| 932 } | |
| 933 | |
| 934 void CrxUpdateService::NotifyObservers(Observer::Events event, | |
| 935 const std::string& id) { | |
| 936 DCHECK(thread_checker_.CalledOnValidThread()); | |
| 937 FOR_EACH_OBSERVER(Observer, observer_list_, OnEvent(event, id)); | |
| 938 } | |
| 939 | |
| 940 ComponentUpdateService::Status CrxUpdateService::OnDemandUpdateWithCooldown( | |
| 941 CrxUpdateItem* uit) { | |
| 942 if (!uit) | |
| 943 return kError; | |
| 944 | |
| 945 // Check if the request is too soon. | |
| 946 base::TimeDelta delta = base::Time::Now() - uit->last_check; | |
| 947 if (delta < base::TimeDelta::FromSeconds(config_->OnDemandDelay())) | |
| 948 return kError; | |
| 949 | |
| 950 return OnDemandUpdateInternal(uit); | |
| 951 } | |
| 952 | |
| 953 ComponentUpdateService::Status CrxUpdateService::OnDemandUpdateInternal( | |
| 954 CrxUpdateItem* uit) { | |
| 955 if (!uit) | |
| 956 return kError; | |
| 957 | |
| 958 uit->on_demand = true; | |
| 959 | |
| 960 // If there is an update available for this item, then continue processing | |
| 961 // the update. This is an artifact of how update checks are done: in addition | |
| 962 // to the on-demand item, the update check may include other items as well. | |
| 963 if (uit->status != CrxUpdateItem::kCanUpdate) { | |
| 964 Status service_status = GetServiceStatus(uit->status); | |
| 965 // If the item is already in the process of being updated, there is | |
| 966 // no point in this call, so return kInProgress. | |
| 967 if (service_status == kInProgress) | |
| 968 return service_status; | |
| 969 | |
| 970 // Otherwise the item was already checked a while back (or it is new), | |
| 971 // set its status to kNew to give it a slightly higher priority. | |
| 972 ChangeItemState(uit, CrxUpdateItem::kNew); | |
| 973 } | |
| 974 | |
| 975 // In case the current delay is long, set the timer to a shorter value | |
| 976 // to get the ball rolling. | |
| 977 if (timer_.IsRunning()) { | |
| 978 timer_.Stop(); | |
| 979 timer_.Start(FROM_HERE, | |
| 980 base::TimeDelta::FromSeconds(config_->StepDelay()), | |
| 981 this, | |
| 982 &CrxUpdateService::ProcessPendingItems); | |
| 983 } | |
| 984 | |
| 985 return kOk; | |
| 986 } | |
| 987 | |
| 988 ComponentUpdateService::Status CrxUpdateService::GetServiceStatus( | |
| 989 CrxUpdateItem::Status status) { | |
| 990 switch (status) { | |
| 991 case CrxUpdateItem::kChecking: | |
| 992 case CrxUpdateItem::kCanUpdate: | |
| 993 case CrxUpdateItem::kDownloadingDiff: | |
| 994 case CrxUpdateItem::kDownloading: | |
| 995 case CrxUpdateItem::kUpdatingDiff: | |
| 996 case CrxUpdateItem::kUpdating: | |
| 997 return kInProgress; | |
| 998 case CrxUpdateItem::kNew: | |
| 999 case CrxUpdateItem::kUpdated: | |
| 1000 case CrxUpdateItem::kUpToDate: | |
| 1001 case CrxUpdateItem::kNoUpdate: | |
| 1002 return kOk; | |
| 1003 case CrxUpdateItem::kLastStatus: | |
| 1004 NOTREACHED() << status; | |
| 1005 } | |
| 1006 return kError; | |
| 1007 } | |
| 1008 | |
| 1009 /////////////////////////////////////////////////////////////////////////////// | |
| 1010 | |
| 1011 // The component update factory. Using the component updater as a singleton | |
| 1012 // is the job of the browser process. | |
| 1013 ComponentUpdateService* ComponentUpdateServiceFactory(Configurator* config) { | |
| 1014 DCHECK(config); | |
| 1015 return new CrxUpdateService(config); | |
| 1016 } | |
| 1017 | |
| 1018 } // namespace component_updater | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 449643002:
Componentize component_updater: Move over a bunch of files to the component. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src