chrome/renderer/extensions/resource_request_policy.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_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_
   6 #define CHROME_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_
   7
   8 #include "ui/base/page_transition_types.h"
   9
  10 class GURL;
  11
  12 namespace blink {
  13 class WebFrame;
  14 }
  15
  16 namespace extensions {
  17
  18 class ExtensionSet;
  19
  20 // Encapsulates the policy for when chrome-extension:// and
  21 // chrome-extension-resource:// URLs can be requested.
  22 class ResourceRequestPolicy {
  23  public:
  24   // Returns true if the chrome-extension:// |resource_url| can be requested
  25   // from |frame_url|. In some cases this decision is made based upon how
  26   // this request was generated. Web triggered transitions are more restrictive
  27   // than those triggered through UI.
  28   static bool CanRequestResource(const GURL& resource_url,
  29                                  blink::WebFrame* frame,
  30                                  ui::PageTransition transition_type,
  31                                  const ExtensionSet* loaded_extensions);
  32   // Returns true if the chrome-extension-resource:// |resource_url| can be
  33   // requested from |frame_url|.
  34   static bool CanRequestExtensionResourceScheme(const GURL& resource_url,
  35                                                 blink::WebFrame* frame);
  36
  37  private:
  38   ResourceRequestPolicy();
  39 };
  40
  41 }  // namespace extensions
  42
  43 #endif  // CHROME_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_