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