chrome/browser/extensions/external_provider_impl.h

   1 // Copyright (c) 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 #ifndef CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_
   7
   8 #include <set>
   9 #include <string>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "chrome/browser/extensions/external_loader.h"
  13 #include "extensions/browser/external_provider_interface.h"
  14 #include "extensions/common/manifest.h"
  15
  16 class Profile;
  17
  18 namespace base {
  19 class DictionaryValue;
  20 class Version;
  21 }
  22
  23 namespace extensions {
  24
  25 // A specialization of the ExternalProvider that uses an instance of
  26 // ExternalLoader to provide external extensions. This class can be seen as a
  27 // bridge between the extension system and an ExternalLoader. Instances live
  28 // their entire life on the UI thread.
  29 class ExternalProviderImpl : public ExternalProviderInterface {
  30  public:
  31   // The constructed provider will provide the extensions loaded from |loader|
  32   // to |service|, that will deal with the installation. The location
  33   // attributes of the provided extensions are also specified here:
  34   // |crx_location|: extensions originating from crx files
  35   // |download_location|: extensions originating from update URLs
  36   // If either of the origins is not supported by this provider, then it should
  37   // be initialized as Manifest::INVALID_LOCATION.
  38   ExternalProviderImpl(VisitorInterface* service,
  39                        const scoped_refptr<ExternalLoader>& loader,
  40                        Profile* profile,
  41                        Manifest::Location crx_location,
  42                        Manifest::Location download_location,
  43                        int creation_flags);
  44
  45   ~ExternalProviderImpl() override;
  46
  47   // Populates a list with providers for all known sources.
  48   static void CreateExternalProviders(
  49       VisitorInterface* service,
  50       Profile* profile,
  51       ProviderCollection* provider_list);
  52
  53   // Sets underlying prefs and notifies provider. Only to be called by the
  54   // owned ExternalLoader instance.
  55   virtual void SetPrefs(base::DictionaryValue* prefs);
  56
  57   // ExternalProvider implementation:
  58   void ServiceShutdown() override;
  59   void VisitRegisteredExtension() override;
  60   bool HasExtension(const std::string& id) const override;
  61   bool GetExtensionDetails(const std::string& id,
  62                            Manifest::Location* location,
  63                            scoped_ptr<base::Version>* version) const override;
  64
  65   bool IsReady() const override;
  66
  67   static const char kExternalCrx[];
  68   static const char kExternalVersion[];
  69   static const char kExternalUpdateUrl[];
  70   static const char kInstallParam[];
  71   static const char kIsBookmarkApp[];
  72   static const char kIsFromWebstore[];
  73   static const char kKeepIfPresent[];
  74   static const char kSupportedLocales[];
  75   static const char kWasInstalledByOem[];
  76   static const char kMayBeUntrusted[];
  77   static const char kMinProfileCreatedByVersion[];
  78
  79   void set_auto_acknowledge(bool auto_acknowledge) {
  80     auto_acknowledge_ = auto_acknowledge;
  81   }
  82
  83   void set_install_immediately(bool install_immediately) {
  84     install_immediately_ = install_immediately;
  85   }
  86
  87  private:
  88   bool HandleMinProfileVersion(const base::DictionaryValue* extension,
  89                                const std::string& extension_id,
  90                                std::set<std::string>* unsupported_extensions);
  91
  92   // Location for external extensions that are provided by this provider from
  93   // local crx files.
  94   const Manifest::Location crx_location_;
  95
  96   // Location for external extensions that are provided by this provider from
  97   // update URLs.
  98   const Manifest::Location download_location_;
  99
 100   // Weak pointer to the object that consumes the external extensions.
 101   // This is zeroed out by: ServiceShutdown()
 102   VisitorInterface* service_;  // weak
 103
 104   // Dictionary of the external extensions that are provided by this provider.
 105   scoped_ptr<base::DictionaryValue> prefs_;
 106
 107   // Indicates that the extensions provided by this provider are loaded
 108   // entirely.
 109   bool ready_;
 110
 111   // The loader that loads the list of external extensions and reports them
 112   // via |SetPrefs|.
 113   scoped_refptr<ExternalLoader> loader_;
 114
 115   // The profile that will be used to install external extensions.
 116   Profile* profile_;
 117
 118   // Creation flags to use for the extension.  These flags will be used
 119   // when calling Extension::Create() by the crx installer.
 120   int creation_flags_;
 121
 122   // Whether loaded extensions should be automatically acknowledged, so that
 123   // the user doesn't see an alert about them.
 124   bool auto_acknowledge_;
 125
 126   // Whether the extensions from this provider should be installed immediately.
 127   bool install_immediately_;
 128
 129   DISALLOW_COPY_AND_ASSIGN(ExternalProviderImpl);
 130 };
 131
 132 }  // namespace extensions
 133
 134 #endif  // CHROME_BROWSER_EXTENSIONS_EXTERNAL_PROVIDER_IMPL_H_