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      1 // Copyright 2014 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_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_
      6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_
      7 
      8 #include "base/memory/scoped_vector.h"
      9 #include "extensions/browser/extension_system.h"
     10 #include "extensions/common/one_shot_event.h"
     11 
     12 class Profile;
     13 
     14 namespace extensions {
     15 
     16 class ContentVerifier;
     17 class DeclarativeUserScriptMaster;
     18 class ExtensionSystemSharedFactory;
     19 class ExtensionWarningBadgeService;
     20 class NavigationObserver;
     21 class SharedUserScriptMaster;
     22 class StateStoreNotificationObserver;
     23 
     24 // The ExtensionSystem for ProfileImpl and OffTheRecordProfileImpl.
     25 // Implementation details: non-shared services are owned by
     26 // ExtensionSystemImpl, a KeyedService with separate incognito
     27 // instances. A private Shared class (also a KeyedService,
     28 // but with a shared instance for incognito) keeps the common services.
     29 class ExtensionSystemImpl : public ExtensionSystem {
     30  public:
     31   explicit ExtensionSystemImpl(Profile* profile);
     32   virtual ~ExtensionSystemImpl();
     33 
     34   // KeyedService implementation.
     35   virtual void Shutdown() OVERRIDE;
     36 
     37   virtual void InitForRegularProfile(bool extensions_enabled) OVERRIDE;
     38 
     39   virtual ExtensionService* extension_service() OVERRIDE;  // shared
     40   virtual RuntimeData* runtime_data() OVERRIDE;  // shared
     41   virtual ManagementPolicy* management_policy() OVERRIDE;  // shared
     42   // shared
     43   virtual SharedUserScriptMaster* shared_user_script_master() OVERRIDE;
     44   virtual ProcessManager* process_manager() OVERRIDE;
     45   virtual StateStore* state_store() OVERRIDE;  // shared
     46   virtual StateStore* rules_store() OVERRIDE;  // shared
     47   virtual LazyBackgroundTaskQueue* lazy_background_task_queue()
     48       OVERRIDE;  // shared
     49   virtual InfoMap* info_map() OVERRIDE; // shared
     50   virtual EventRouter* event_router() OVERRIDE;  // shared
     51   virtual WarningService* warning_service() OVERRIDE;
     52   virtual Blacklist* blacklist() OVERRIDE;  // shared
     53   virtual ErrorConsole* error_console() OVERRIDE;
     54   virtual InstallVerifier* install_verifier() OVERRIDE;
     55   virtual QuotaService* quota_service() OVERRIDE;  // shared
     56 
     57   virtual void RegisterExtensionWithRequestContexts(
     58       const Extension* extension) OVERRIDE;
     59 
     60   virtual void UnregisterExtensionWithRequestContexts(
     61       const std::string& extension_id,
     62       const UnloadedExtensionInfo::Reason reason) OVERRIDE;
     63 
     64   virtual const OneShotEvent& ready() const OVERRIDE;
     65   virtual ContentVerifier* content_verifier() OVERRIDE;  // shared
     66   virtual scoped_ptr<ExtensionSet> GetDependentExtensions(
     67       const Extension* extension) OVERRIDE;
     68 
     69   virtual DeclarativeUserScriptMaster*
     70       GetDeclarativeUserScriptMasterByExtension(
     71           const ExtensionId& extension_id) OVERRIDE;  // shared
     72 
     73  private:
     74   friend class ExtensionSystemSharedFactory;
     75 
     76   // Owns the Extension-related systems that have a single instance
     77   // shared between normal and incognito profiles.
     78   class Shared : public KeyedService {
     79    public:
     80     explicit Shared(Profile* profile);
     81     virtual ~Shared();
     82 
     83     // Initialization takes place in phases.
     84     virtual void InitPrefs();
     85     // This must not be called until all the providers have been created.
     86     void RegisterManagementPolicyProviders();
     87     void Init(bool extensions_enabled);
     88 
     89     // KeyedService implementation.
     90     virtual void Shutdown() OVERRIDE;
     91 
     92     StateStore* state_store();
     93     StateStore* rules_store();
     94     ExtensionService* extension_service();
     95     RuntimeData* runtime_data();
     96     ManagementPolicy* management_policy();
     97     SharedUserScriptMaster* shared_user_script_master();
     98     Blacklist* blacklist();
     99     InfoMap* info_map();
    100     LazyBackgroundTaskQueue* lazy_background_task_queue();
    101     EventRouter* event_router();
    102     WarningService* warning_service();
    103     ErrorConsole* error_console();
    104     InstallVerifier* install_verifier();
    105     QuotaService* quota_service();
    106     const OneShotEvent& ready() const { return ready_; }
    107     ContentVerifier* content_verifier();
    108 
    109     DeclarativeUserScriptMaster* GetDeclarativeUserScriptMasterByExtension(
    110         const ExtensionId& extension_id);
    111 
    112    private:
    113     Profile* profile_;
    114 
    115     // The services that are shared between normal and incognito profiles.
    116 
    117     scoped_ptr<StateStore> state_store_;
    118     scoped_ptr<StateStoreNotificationObserver>
    119         state_store_notification_observer_;
    120     scoped_ptr<StateStore> rules_store_;
    121     // LazyBackgroundTaskQueue is a dependency of
    122     // MessageService and EventRouter.
    123     scoped_ptr<LazyBackgroundTaskQueue> lazy_background_task_queue_;
    124     scoped_ptr<EventRouter> event_router_;
    125     scoped_ptr<NavigationObserver> navigation_observer_;
    126     // Shared memory region manager for scripts statically declared in extension
    127     // manifests. This region is shared between all extensions.
    128     scoped_ptr<SharedUserScriptMaster> shared_user_script_master_;
    129     // Shared memory region manager for programmatically declared scripts, one
    130     // per extension. Managers are instantiated the first time the declarative
    131     // API is used by an extension to request content scripts.
    132     ScopedVector<DeclarativeUserScriptMaster> declarative_user_script_masters_;
    133     scoped_ptr<Blacklist> blacklist_;
    134     scoped_ptr<RuntimeData> runtime_data_;
    135     // ExtensionService depends on StateStore, Blacklist and RuntimeData.
    136     scoped_ptr<ExtensionService> extension_service_;
    137     scoped_ptr<ManagementPolicy> management_policy_;
    138     // extension_info_map_ needs to outlive process_manager_.
    139     scoped_refptr<InfoMap> extension_info_map_;
    140     scoped_ptr<WarningService> warning_service_;
    141     scoped_ptr<ExtensionWarningBadgeService> extension_warning_badge_service_;
    142     scoped_ptr<ErrorConsole> error_console_;
    143     scoped_ptr<InstallVerifier> install_verifier_;
    144     scoped_ptr<QuotaService> quota_service_;
    145 
    146     // For verifying the contents of extensions read from disk.
    147     scoped_refptr<ContentVerifier> content_verifier_;
    148 
    149 #if defined(OS_CHROMEOS)
    150     scoped_ptr<chromeos::DeviceLocalAccountManagementPolicyProvider>
    151         device_local_account_management_policy_provider_;
    152 #endif
    153 
    154     OneShotEvent ready_;
    155   };
    156 
    157   Profile* profile_;
    158 
    159   Shared* shared_;
    160 
    161   // |process_manager_| must be destroyed before the Profile's |io_data_|. While
    162   // |process_manager_| still lives, we handle incoming resource requests from
    163   // extension processes and those require access to the ResourceContext owned
    164   // by |io_data_|.
    165   scoped_ptr<ProcessManager> process_manager_;
    166 
    167   DISALLOW_COPY_AND_ASSIGN(ExtensionSystemImpl);
    168 };
    169 
    170 }  // namespace extensions
    171 
    172 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_IMPL_H_
    173