content/browser/permissions/permission_service_impl.h

   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 CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
   6 #define CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_
   7
   8 #include "base/id_map.h"
   9 #include "base/macros.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "content/browser/permissions/permission_service_context.h"
  12 #include "content/common/permission_service.mojom.h"
  13 #include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
  14 #include "third_party/mojo/src/mojo/public/cpp/bindings/error_handler.h"
  15
  16 namespace content {
  17
  18 enum class PermissionType;
  19
  20 // Implements the PermissionService Mojo interface.
  21 // This service can be created from a RenderFrameHost or a RenderProcessHost.
  22 // It is owned by a PermissionServiceContext.
  23 // It receives at PermissionServiceContext instance when created which allows it
  24 // to have some information about the current context. That enables the service
  25 // to know whether it can show UI and have knowledge of the associated
  26 // WebContents for example.
  27 class PermissionServiceImpl : public PermissionService,
  28                               public mojo::ErrorHandler {
  29  public:
  30   ~PermissionServiceImpl() override;
  31
  32   // Clear pending operations currently run by the service. This will be called
  33   // by PermissionServiceContext when it will need the service to clear its
  34   // state for example, if the frame changes.
  35   void CancelPendingOperations();
  36
  37  protected:
  38   friend PermissionServiceContext;
  39
  40   PermissionServiceImpl(PermissionServiceContext* context,
  41                         mojo::InterfaceRequest<PermissionService> request);
  42
  43  private:
  44   using PermissionStatusCallback = mojo::Callback<void(PermissionStatus)>;
  45
  46   struct PendingRequest {
  47     PendingRequest(PermissionType permission, const GURL& origin,
  48                    const PermissionStatusCallback& callback);
  49     ~PendingRequest();
  50
  51     PermissionType permission;
  52     GURL origin;
  53     PermissionStatusCallback callback;
  54   };
  55   using RequestsMap = IDMap<PendingRequest, IDMapOwnPointer>;
  56
  57   struct PendingSubscription {
  58     PendingSubscription(PermissionType permission, const GURL& origin,
  59                         const PermissionStatusCallback& callback);
  60     ~PendingSubscription();
  61
  62     // Subscription ID received from the PermissionManager.
  63     int id;
  64     PermissionType permission;
  65     GURL origin;
  66     PermissionStatusCallback callback;
  67   };
  68   using SubscriptionsMap = IDMap<PendingSubscription, IDMapOwnPointer>;
  69
  70   // PermissionService.
  71   void HasPermission(PermissionName permission,
  72                      const mojo::String& origin,
  73                      const PermissionStatusCallback& callback) override;
  74   void RequestPermission(PermissionName permission,
  75                          const mojo::String& origin,
  76                          bool user_gesture,
  77                          const PermissionStatusCallback& callback) override;
  78   void RevokePermission(PermissionName permission,
  79                         const mojo::String& origin,
  80                         const PermissionStatusCallback& callback) override;
  81   void GetNextPermissionChange(
  82       PermissionName permission,
  83       const mojo::String& origin,
  84       PermissionStatus last_known_status,
  85       const PermissionStatusCallback& callback) override;
  86
  87   // mojo::ErrorHandler
  88   void OnConnectionError() override;
  89
  90   void OnRequestPermissionResponse(int request_id, PermissionStatus status);
  91
  92   PermissionStatus GetPermissionStatusFromName(PermissionName permission,
  93                                                const GURL& origin);
  94   PermissionStatus GetPermissionStatusFromType(PermissionType type,
  95                                                const GURL& origin);
  96   void ResetPermissionStatus(PermissionType type, const GURL& origin);
  97
  98   void OnPermissionStatusChanged(int pending_subscription_id,
  99                                  PermissionStatus status);
 100
 101   RequestsMap pending_requests_;
 102   SubscriptionsMap pending_subscriptions_;
 103   // context_ owns |this|.
 104   PermissionServiceContext* context_;
 105   mojo::Binding<PermissionService> binding_;
 106   base::WeakPtrFactory<PermissionServiceImpl> weak_factory_;
 107
 108   DISALLOW_COPY_AND_ASSIGN(PermissionServiceImpl);
 109 };
 110
 111 }  // namespace content
 112
 113 #endif  // CONTENT_BROWSER_PERMISSIONS_PERMISSION_SERVICE_IMPL_H_