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 CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_INFO_LOADER_H_ 6 #define CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_INFO_LOADER_H_ 7 8 #include <string> 9 10 #include "base/callback.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "base/time/time.h" 13 #include "content/common/content_export.h" 14 #include "content/renderer/media/active_loader.h" 15 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h" 16 #include "third_party/WebKit/public/web/WebMediaPlayer.h" 17 #include "url/gurl.h" 18 19 namespace WebKit { 20 class WebFrame; 21 class WebURLLoader; 22 class WebURLRequest; 23 } 24 25 namespace content { 26 27 // This class provides additional information about a media URL. Currently it 28 // can be used to determine if a media URL has a single security origin and 29 // whether the URL passes a CORS access check. 30 class CONTENT_EXPORT MediaInfoLoader : private WebKit::WebURLLoaderClient { 31 public: 32 // Status codes for start operations on MediaInfoLoader. 33 enum Status { 34 // The operation failed, which may have been due to: 35 // - Page navigation 36 // - Server replied 4xx/5xx 37 // - The response was invalid 38 // - Connection was terminated 39 // 40 // At this point you should delete the loader. 41 kFailed, 42 43 // Everything went as planned. 44 kOk, 45 }; 46 47 // Start loading information about the given media URL. 48 // |url| - URL for the media resource to be loaded. 49 // |cors_mode| - HTML media element's crossorigin attribute. 50 // |ready_cb| - Called when media info has finished or failed loading. 51 typedef base::Callback<void(Status)> ReadyCB; 52 MediaInfoLoader( 53 const GURL& url, 54 WebKit::WebMediaPlayer::CORSMode cors_mode, 55 const ReadyCB& ready_cb); 56 virtual ~MediaInfoLoader(); 57 58 // Start loading media info. 59 void Start(WebKit::WebFrame* frame); 60 61 // Returns true if the media resource has a single origin, false otherwise. 62 // Only valid to call after the loader becomes ready. 63 bool HasSingleOrigin() const; 64 65 // Returns true if the media resource passed a CORS access control check. 66 // Only valid to call after the loader becomes ready. 67 bool DidPassCORSAccessCheck() const; 68 69 private: 70 friend class MediaInfoLoaderTest; 71 72 // WebKit::WebURLLoaderClient implementation. 73 virtual void willSendRequest( 74 WebKit::WebURLLoader* loader, 75 WebKit::WebURLRequest& newRequest, 76 const WebKit::WebURLResponse& redirectResponse); 77 virtual void didSendData( 78 WebKit::WebURLLoader* loader, 79 unsigned long long bytesSent, 80 unsigned long long totalBytesToBeSent); 81 virtual void didReceiveResponse( 82 WebKit::WebURLLoader* loader, 83 const WebKit::WebURLResponse& response); 84 virtual void didDownloadData( 85 WebKit::WebURLLoader* loader, 86 int data_length); 87 virtual void didReceiveData( 88 WebKit::WebURLLoader* loader, 89 const char* data, 90 int data_length, 91 int encoded_data_length); 92 virtual void didReceiveCachedMetadata( 93 WebKit::WebURLLoader* loader, 94 const char* data, int dataLength); 95 virtual void didFinishLoading( 96 WebKit::WebURLLoader* loader, 97 double finishTime); 98 virtual void didFail( 99 WebKit::WebURLLoader* loader, 100 const WebKit::WebURLError&); 101 102 void DidBecomeReady(Status status); 103 104 // Injected WebURLLoader instance for testing purposes. 105 scoped_ptr<WebKit::WebURLLoader> test_loader_; 106 107 // Keeps track of an active WebURLLoader and associated state. 108 scoped_ptr<ActiveLoader> active_loader_; 109 110 bool loader_failed_; 111 GURL url_; 112 WebKit::WebMediaPlayer::CORSMode cors_mode_; 113 bool single_origin_; 114 115 ReadyCB ready_cb_; 116 base::TimeTicks start_time_; 117 118 DISALLOW_COPY_AND_ASSIGN(MediaInfoLoader); 119 }; 120 121 } // namespace content 122 123 #endif // CONTENT_RENDERER_MEDIA_ANDROID_MEDIA_INFO_LOADER_H_ 124