chrome/browser/managed_mode/managed_user_service.h

   1 // Copyright (c) 2013 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 #ifndef CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_SERVICE_H_
   6 #define CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_SERVICE_H_
   7
   8 #include <set>
   9 #include <vector>
  10
  11 #include "base/callback.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/prefs/pref_change_registrar.h"
  14 #include "base/strings/string16.h"
  15 #include "chrome/browser/managed_mode/managed_mode_url_filter.h"
  16 #include "chrome/browser/managed_mode/managed_users.h"
  17 #include "chrome/browser/sync/profile_sync_service_observer.h"
  18 #include "chrome/browser/ui/browser_list_observer.h"
  19 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
  20 #include "content/public/browser/notification_observer.h"
  21 #include "content/public/browser/notification_registrar.h"
  22 #include "content/public/browser/web_contents.h"
  23 #include "extensions/browser/management_policy.h"
  24
  25 class Browser;
  26 class GoogleServiceAuthError;
  27 class ManagedModeURLFilter;
  28 class ManagedModeSiteList;
  29 class ManagedUserRegistrationUtility;
  30 class ManagedUserSettingsService;
  31 class Profile;
  32
  33 namespace user_prefs {
  34 class PrefRegistrySyncable;
  35 }
  36
  37 // This class handles all the information related to a given managed profile
  38 // (e.g. the installed content packs, the default URL filtering behavior, or
  39 // manual whitelist/blacklist overrides).
  40 class ManagedUserService : public BrowserContextKeyedService,
  41                            public extensions::ManagementPolicy::Provider,
  42                            public ProfileSyncServiceObserver,
  43                            public content::NotificationObserver,
  44                            public chrome::BrowserListObserver {
  45  public:
  46   typedef std::vector<base::string16> CategoryList;
  47   typedef base::Callback<void(content::WebContents*)> NavigationBlockedCallback;
  48   typedef base::Callback<void(const GoogleServiceAuthError&)> AuthErrorCallback;
  49
  50   enum ManualBehavior {
  51     MANUAL_NONE = 0,
  52     MANUAL_ALLOW,
  53     MANUAL_BLOCK
  54   };
  55
  56   virtual ~ManagedUserService();
  57
  58   // ProfileKeyedService override:
  59   virtual void Shutdown() OVERRIDE;
  60
  61   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
  62
  63   static void MigrateUserPrefs(PrefService* prefs);
  64
  65   // Returns the URL filter for the IO thread, for filtering network requests
  66   // (in ManagedModeResourceThrottle).
  67   scoped_refptr<const ManagedModeURLFilter> GetURLFilterForIOThread();
  68
  69   // Returns the URL filter for the UI thread, for filtering navigations and
  70   // classifying sites in the history view.
  71   ManagedModeURLFilter* GetURLFilterForUIThread();
  72
  73   // Returns the URL's category, obtained from the installed content packs.
  74   int GetCategory(const GURL& url);
  75
  76   // Returns the list of all known human-readable category names, sorted by ID
  77   // number. Called in the critical path of drawing the history UI, so needs to
  78   // be fast.
  79   void GetCategoryNames(CategoryList* list);
  80
  81   // Whether the user can request access to blocked URLs.
  82   bool AccessRequestsEnabled();
  83
  84   // Adds an access request for the given URL. The requests are stored using
  85   // a prefix followed by a URIEncoded version of the URL. Each entry contains
  86   // a dictionary which currently has the timestamp of the request in it.
  87   void AddAccessRequest(const GURL& url);
  88
  89   // Returns the email address of the custodian.
  90   std::string GetCustodianEmailAddress() const;
  91
  92   // Returns the name of the custodian, or the email address if the name is
  93   // empty.
  94   std::string GetCustodianName() const;
  95
  96   // These methods allow querying and modifying the manual filtering behavior.
  97   // The manual behavior is set by the user and overrides all other settings
  98   // (whitelists or the default behavior).
  99
 100   // Returns the manual behavior for the given host.
 101   ManualBehavior GetManualBehaviorForHost(const std::string& hostname);
 102
 103   // Returns the manual behavior for the given URL.
 104   ManualBehavior GetManualBehaviorForURL(const GURL& url);
 105
 106   // Returns all URLS on the given host that have exceptions.
 107   void GetManualExceptionsForHost(const std::string& host,
 108                                   std::vector<GURL>* urls);
 109
 110   // Initializes this object. This method does nothing if the profile is not
 111   // managed.
 112   void Init();
 113
 114   // Initializes this profile for syncing, using the provided |refresh_token| to
 115   // mint access tokens for Sync.
 116   void InitSync(const std::string& refresh_token);
 117
 118   // Convenience method that registers this managed user using
 119   // |registration_utility| and initializes sync with the returned token.
 120   // The |callback| will be called when registration is complete,
 121   // whether it suceeded or not -- unless registration was cancelled manually,
 122   // in which case the callback will be ignored.
 123   void RegisterAndInitSync(ManagedUserRegistrationUtility* registration_utility,
 124                            Profile* custodian_profile,
 125                            const std::string& managed_user_id,
 126                            const AuthErrorCallback& callback);
 127
 128   void set_elevated_for_testing(bool skip) {
 129     elevated_for_testing_ = skip;
 130   }
 131
 132   void AddNavigationBlockedCallback(const NavigationBlockedCallback& callback);
 133   void DidBlockNavigation(content::WebContents* web_contents);
 134
 135   // extensions::ManagementPolicy::Provider implementation:
 136   virtual std::string GetDebugPolicyProviderName() const OVERRIDE;
 137   virtual bool UserMayLoad(const extensions::Extension* extension,
 138                            base::string16* error) const OVERRIDE;
 139   virtual bool UserMayModifySettings(const extensions::Extension* extension,
 140                                      base::string16* error) const OVERRIDE;
 141
 142   // ProfileSyncServiceObserver implementation:
 143   virtual void OnStateChanged() OVERRIDE;
 144
 145   // content::NotificationObserver implementation:
 146   virtual void Observe(int type,
 147                        const content::NotificationSource& source,
 148                        const content::NotificationDetails& details) OVERRIDE;
 149
 150   // chrome::BrowserListObserver implementation:
 151   virtual void OnBrowserSetLastActive(Browser* browser) OVERRIDE;
 152
 153  private:
 154   friend class ManagedUserServiceExtensionTestBase;
 155   friend class ManagedUserServiceFactory;
 156   FRIEND_TEST_ALL_PREFIXES(ManagedUserServiceTest,
 157                            ExtensionManagementPolicyProviderUnmanaged);
 158   FRIEND_TEST_ALL_PREFIXES(ManagedUserServiceTest,
 159                            ExtensionManagementPolicyProviderManaged);
 160
 161   // A bridge from ManagedMode (which lives on the UI thread) to the
 162   // ManagedModeURLFilters, one of which lives on the IO thread. This class
 163   // mediates access to them and makes sure they are kept in sync.
 164   class URLFilterContext {
 165    public:
 166     URLFilterContext();
 167     ~URLFilterContext();
 168
 169     ManagedModeURLFilter* ui_url_filter() const;
 170     ManagedModeURLFilter* io_url_filter() const;
 171
 172     void SetDefaultFilteringBehavior(
 173         ManagedModeURLFilter::FilteringBehavior behavior);
 174     void LoadWhitelists(ScopedVector<ManagedModeSiteList> site_lists);
 175     void SetManualHosts(scoped_ptr<std::map<std::string, bool> > host_map);
 176     void SetManualURLs(scoped_ptr<std::map<GURL, bool> > url_map);
 177
 178    private:
 179     // ManagedModeURLFilter is refcounted because the IO thread filter is used
 180     // both by ProfileImplIOData and OffTheRecordProfileIOData (to filter
 181     // network requests), so they both keep a reference to it.
 182     // Clients should not keep references to the UI thread filter, however
 183     // (the filter will live as long as the profile lives, and afterwards it
 184     // should not be used anymore either).
 185     scoped_refptr<ManagedModeURLFilter> ui_url_filter_;
 186     scoped_refptr<ManagedModeURLFilter> io_url_filter_;
 187
 188     DISALLOW_COPY_AND_ASSIGN(URLFilterContext);
 189   };
 190
 191   // Use |ManagedUserServiceFactory::GetForProfile(..)| to get
 192   // an instance of this service.
 193   explicit ManagedUserService(Profile* profile);
 194
 195   void OnCustodianProfileDownloaded(const base::string16& full_name);
 196
 197   void OnManagedUserRegistered(const AuthErrorCallback& callback,
 198                                Profile* custodian_profile,
 199                                const GoogleServiceAuthError& auth_error,
 200                                const std::string& token);
 201
 202   void SetupSync();
 203
 204   bool ProfileIsManaged() const;
 205
 206   // Internal implementation for ExtensionManagementPolicy::Delegate methods.
 207   // If |error| is not NULL, it will be filled with an error message if the
 208   // requested extension action (install, modify status, etc.) is not permitted.
 209   bool ExtensionManagementPolicyImpl(const extensions::Extension* extension,
 210                                      base::string16* error) const;
 211
 212   // Returns a list of all installed and enabled site lists in the current
 213   // managed profile.
 214   ScopedVector<ManagedModeSiteList> GetActiveSiteLists();
 215
 216   ManagedUserSettingsService* GetSettingsService();
 217
 218   void OnDefaultFilteringBehaviorChanged();
 219
 220   void UpdateSiteLists();
 221
 222   // Updates the manual overrides for hosts in the URL filters when the
 223   // corresponding preference is changed.
 224   void UpdateManualHosts();
 225
 226   // Updates the manual overrides for URLs in the URL filters when the
 227   // corresponding preference is changed.
 228   void UpdateManualURLs();
 229
 230   // Records some events (opening the managed user profile, switching from the
 231   // managed user profile, and quitting the browser); each is stored
 232   // using a key with a prefix (|key_prefix|) indicating the type of the event.
 233   // Each entry is a dictionary which has the timestamp of the event.
 234   void RecordProfileAndBrowserEventsHelper(const char* key_prefix);
 235
 236   // Owns us via the BrowserContextKeyedService mechanism.
 237   Profile* profile_;
 238
 239   content::NotificationRegistrar registrar_;
 240   PrefChangeRegistrar pref_change_registrar_;
 241
 242   // True iff we're waiting for the Sync service to be initialized.
 243   bool waiting_for_sync_initialization_;
 244   bool is_profile_active_;
 245
 246   std::vector<NavigationBlockedCallback> navigation_blocked_callbacks_;
 247
 248   // Sets a profile in elevated state for testing if set to true.
 249   bool elevated_for_testing_;
 250
 251   // True only when |Shutdown()| method has been called.
 252   bool did_shutdown_;
 253
 254   URLFilterContext url_filter_context_;
 255
 256   base::WeakPtrFactory<ManagedUserService> weak_ptr_factory_;
 257 };
 258
 259 #endif  // CHROME_BROWSER_MANAGED_MODE_MANAGED_USER_SERVICE_H_