Support for process-wide incidents in the safe browsing incident reporting service.

chrome/browser/safe_browsing/incident_reporting_service.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_SERVICE_H_
 #define CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_SERVICE_H_
 
 #include <stdint.h>
 
 #include <map>
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "chrome/browser/safe_browsing/add_incident_callback.h"
+#include "chrome/browser/safe_browsing/delayed_analysis_callback.h"
+#include "chrome/browser/safe_browsing/delayed_callback_runner.h"
 #include "chrome/browser/safe_browsing/incident_report_uploader.h"
 #include "chrome/browser/safe_browsing/last_download_finder.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 class SafeBrowsingDatabaseManager;
 class SafeBrowsingService;
 class TrackedPreferenceValidationDelegate;
 
@@ skipping 15 matching lines @@
 class ClientIncidentReport;
 class ClientIncidentReport_DownloadDetails;
 class ClientIncidentReport_EnvironmentData;
 class ClientIncidentReport_IncidentData;
 
 // A class that manages the collection of incidents and submission of incident
 // reports to the safe browsing client-side detection service. The service
 // begins operation when an incident is reported via the AddIncident method.
 // Incidents reported from a profile that is loading are held until the profile
 // is fully created. Incidents originating from profiles that do not participate
-// in safe browsing are dropped. Following the addition of an incident that is
-// not dropped, the service collects environmental data, finds the most recent
-// binary download, and waits a bit. Additional incidents that arrive during
-// this time are collated with the initial incident. Finally, already-reported
-// incidents are pruned and any remaining are uploaded in an incident report.
+// in safe browsing are dropped. Process-wide incidents are affiliated with a
+// profile that participates in safe browsing when one becomes available.
+// Following the addition of an incident that is not dropped, the service
+// collects environmental data, finds the most recent binary download, and waits
+// a bit. Additional incidents that arrive during this time are collated with
+// the initial incident. Finally, already-reported incidents are pruned and any
+// remaining are uploaded in an incident report.
 class IncidentReportingService : public content::NotificationObserver {
  public:
   IncidentReportingService(SafeBrowsingService* safe_browsing_service,
                            const scoped_refptr<net::URLRequestContextGetter>&
                                request_context_getter);
 
   // All incident collection, data collection, and uploads in progress are
   // dropped at destruction.
   virtual ~IncidentReportingService();
 
   // Returns a callback by which external components can add an incident to the
   // service on behalf of |profile|. The callback may outlive the service, but
   // will no longer have any effect after the service is deleted. The callback
   // must not be run after |profile| has been destroyed.
   AddIncidentCallback GetAddIncidentCallback(Profile* profile);
 
   // Returns a preference validation delegate that adds incidents to the service
   // for validation failures in |profile|. The delegate may outlive the service,
   // but incidents reported by it will no longer have any effect after the
   // service is deleted. The lifetime of the delegate should not extend beyond
   // that of the profile it services.
   scoped_ptr<TrackedPreferenceValidationDelegate>
       CreatePreferenceValidationDelegate(Profile* profile);
 
+  // Registers |callback| to be run after some delay following process launch.
+  void RegisterDelayedAnalysisCallback(const DelayedAnalysisCallback& callback);
+
  protected:
   // A pointer to a function that populates a protobuf with environment data.
   typedef void (*CollectEnvironmentDataFn)(
       ClientIncidentReport_EnvironmentData*);
 
+  // For testing so that the TaskRunner used for delayed analysis callbacks can
+  // be specified.
+  IncidentReportingService(
+      SafeBrowsingService* safe_browsing_service,
+      const scoped_refptr<net::URLRequestContextGetter>& request_context_getter,
+      base::TimeDelta delayed_task_interval,
+      const scoped_refptr<base::TaskRunner>& delayed_task_runner);
+
   // Sets the function called by the service to collect environment data and the
   // task runner on which it is called. Used by unit tests to provide a fake
   // environment data collector.
   void SetCollectEnvironmentHook(
       CollectEnvironmentDataFn collect_environment_data_hook,
       const scoped_refptr<base::TaskRunner>& task_runner);
 
   // Handles the addition of a new profile to the ProfileManager. Creates a new
   // context for |profile| if one does not exist, drops any received incidents
   // for the profile if the profile is not participating in safe browsing, and
@@ skipping 23 matching lines @@
   // Returns the context for |profile|, creating it if it does not exist.
   ProfileContext* GetOrCreateProfileContext(Profile* profile);
 
   // Returns the context for |profile|, or NULL if it is unknown.
   ProfileContext* GetProfileContext(Profile* profile);
 
   // Handles the destruction of a profile. Incidents reported for the profile
   // but not yet uploaded are dropped.
   void OnProfileDestroyed(Profile* profile);
 
+  // Returns an initialized profile that participates in safe browsing. Profiles
+  // participating in extended safe browsing are preferred.
+  Profile* FindEligibleProfile() const;
+
   // Adds |incident_data| to the service. The incident_time_msec field is
   // populated with the current time if the caller has not already done so.
   void AddIncident(Profile* profile,
                    scoped_ptr<ClientIncidentReport_IncidentData> incident_data);
 
+  // Begins processing a report. If processing is already underway, ensures that
+  // collection tasks have completed or are running.
+  void BeginReportProcessing();
+
+  // Begins the process of collating incidents by waiting for incidents to
+  // arrive. This function is idempotent.
+  void BeginIncidentCollation();
+
   // Starts a task to collect environment data in the blocking pool.
   void BeginEnvironmentCollection();
 
   // Returns true if the environment collection task is outstanding.
   bool WaitingForEnvironmentCollection();
 
   // Cancels any pending environment collection task and drops any data that has
   // already been collected.
   void CancelEnvironmentCollection();
 
   // A callback invoked on the UI thread when environment data collection is
   // complete. Incident report processing continues, either by waiting for the
   // collection timeout or by sending an incident report.
   void OnEnvironmentDataCollected(
       scoped_ptr<ClientIncidentReport_EnvironmentData> environment_data);
 
   // Returns true if the service is waiting for additional incidents before
   // uploading a report.
   bool WaitingToCollateIncidents();
 
   // Cancels the collection timeout.
   void CancelIncidentCollection();
 
-  // A callback invoked on the UI thread after which incident collection has
+  // A callback invoked on the UI thread after which incident collation has
   // completed. Incident report processing continues, either by waiting for
-  // environment data to arrive or by sending an incident report.
-  void OnCollectionTimeout();
+  // environment data or the most recent download to arrive or by sending an
+  // incident report.
+  void OnCollationTimeout();
 
   // Starts the asynchronous process of finding the most recent executable
   // download if one is not currently being search for and/or has not already
   // been found.
   void BeginDownloadCollection();
 
   // True if the service is waiting to discover the most recent download either
   // because a task to do so is outstanding, or because one or more profiles
   // have yet to be added to the ProfileManager.
   bool WaitingForMostRecentDownload();
@@ skipping 51 matching lines @@
   scoped_refptr<base::TaskRunner> environment_collection_task_runner_;
 
   // Registrar for observing profile lifecycle notifications.
   content::NotificationRegistrar notification_registrar_;
 
   // True when the asynchronous environment collection task has been fired off
   // but has not yet completed.
   bool environment_collection_pending_;
 
   // True when an incident has been received and the service is waiting for the
-  // upload_timer_ to fire.
-  bool collection_timeout_pending_;
+  // collation_timer_ to fire.
+  bool collation_timeout_pending_;
 
   // A timer upon the firing of which the service will report received
   // incidents.
-  base::DelayTimer<IncidentReportingService> upload_timer_;
+  base::DelayTimer<IncidentReportingService> collation_timer_;
 
   // The report currently being assembled. This becomes non-NULL when an initial
   // incident is reported, and returns to NULL when the report is sent for
   // upload.
   scoped_ptr<ClientIncidentReport> report_;
 
   // The time at which the initial incident is reported.
   base::Time first_incident_time_;
 
   // The time at which the last incident is reported.
   base::TimeTicks last_incident_time_;
 
   // The time at which environmental data collection was initiated.
   base::TimeTicks environment_collection_begin_;
 
   // The time at which download collection was initiated.
   base::TimeTicks last_download_begin_;
 
-  // Context data for all on-the-record profiles.
+  // Context data for all on-the-record profiles plus the process-wide (NULL)
+  // context.
   ProfileContextCollection profiles_;
 
+  // Callbacks registered for performing delayed analysis.
+  DelayedCallbackRunner delayed_analysis_callbacks_;
+
   // The collection of uploads in progress.
   ScopedVector<UploadContext> uploads_;
 
   // An object that asynchronously searches for the most recent binary download.
   // Non-NULL while such a search is outstanding.
   scoped_ptr<LastDownloadFinder> last_download_finder_;
 
   // A factory for handing out weak pointers for AddIncident callbacks.
   base::WeakPtrFactory<IncidentReportingService> receiver_weak_ptr_factory_;
 
   // A factory for handing out weak pointers for internal asynchronous tasks
   // that are posted during normal processing (e.g., environment collection,
   // safe browsing database checks, and report uploads).
   base::WeakPtrFactory<IncidentReportingService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(IncidentReportingService);
 };
 
 }  // namespace safe_browsing
 
 #endif  // CHROME_BROWSER_SAFE_BROWSING_INCIDENT_REPORTING_SERVICE_H_