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      1 // Copyright 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_COMMON_EXTENSIONS_CHROME_EXTENSIONS_CLIENT_H_
      6 #define CHROME_COMMON_EXTENSIONS_CHROME_EXTENSIONS_CLIENT_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/lazy_instance.h"
     11 #include "chrome/common/extensions/permissions/chrome_api_permissions.h"
     12 #include "chrome/common/extensions/permissions/chrome_permission_message_provider.h"
     13 #include "extensions/common/extensions_client.h"
     14 #include "extensions/common/permissions/extensions_api_permissions.h"
     15 
     16 namespace extensions {
     17 
     18 // The implementation of ExtensionsClient for Chrome, which encapsulates the
     19 // global knowledge of features, permissions, and manifest fields.
     20 class ChromeExtensionsClient : public ExtensionsClient {
     21  public:
     22   ChromeExtensionsClient();
     23   virtual ~ChromeExtensionsClient();
     24 
     25   virtual void Initialize() OVERRIDE;
     26 
     27   virtual const PermissionMessageProvider& GetPermissionMessageProvider() const
     28       OVERRIDE;
     29   virtual const std::string GetProductName() OVERRIDE;
     30   virtual scoped_ptr<FeatureProvider> CreateFeatureProvider(
     31       const std::string& name) const OVERRIDE;
     32   virtual scoped_ptr<JSONFeatureProviderSource> CreateFeatureProviderSource(
     33       const std::string& name) const OVERRIDE;
     34   virtual void FilterHostPermissions(
     35       const URLPatternSet& hosts,
     36       URLPatternSet* new_hosts,
     37       std::set<PermissionMessage>* messages) const OVERRIDE;
     38   virtual void SetScriptingWhitelist(const ScriptingWhitelist& whitelist)
     39       OVERRIDE;
     40   virtual const ScriptingWhitelist& GetScriptingWhitelist() const OVERRIDE;
     41   virtual URLPatternSet GetPermittedChromeSchemeHosts(
     42       const Extension* extension,
     43       const APIPermissionSet& api_permissions) const OVERRIDE;
     44   virtual bool IsScriptableURL(const GURL& url, std::string* error) const
     45       OVERRIDE;
     46   virtual bool IsAPISchemaGenerated(const std::string& name) const OVERRIDE;
     47   virtual base::StringPiece GetAPISchema(const std::string& name) const
     48       OVERRIDE;
     49   virtual void RegisterAPISchemaResources(ExtensionAPI* api) const OVERRIDE;
     50   virtual bool ShouldSuppressFatalErrors() const OVERRIDE;
     51   virtual std::string GetWebstoreBaseURL() const OVERRIDE;
     52   virtual std::string GetWebstoreUpdateURL() const OVERRIDE;
     53   virtual bool IsBlacklistUpdateURL(const GURL& url) const OVERRIDE;
     54 
     55   // Get the LazyInstance for ChromeExtensionsClient.
     56   static ChromeExtensionsClient* GetInstance();
     57 
     58  private:
     59   const ChromeAPIPermissions chrome_api_permissions_;
     60   const ExtensionsAPIPermissions extensions_api_permissions_;
     61   const ChromePermissionMessageProvider permission_message_provider_;
     62 
     63   // A whitelist of extensions that can script anywhere. Do not add to this
     64   // list (except in tests) without consulting the Extensions team first.
     65   // Note: Component extensions have this right implicitly and do not need to be
     66   // added to this list.
     67   ScriptingWhitelist scripting_whitelist_;
     68 
     69   friend struct base::DefaultLazyInstanceTraits<ChromeExtensionsClient>;
     70 
     71   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionsClient);
     72 };
     73 
     74 }  // namespace extensions
     75 
     76 #endif  // CHROME_COMMON_EXTENSIONS_CHROME_EXTENSIONS_CLIENT_H_
     77