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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ | 5 #ifndef CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ |
| 6 #define CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ | 6 #define CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <string> | 9 // TODO(jam): remove this file when all files have been converted. |
| 10 | 10 #include "content/browser/renderer_host/buffered_resource_handler.h" |
| 11 #include "chrome/browser/renderer_host/resource_handler.h" | |
| 12 | |
| 13 class MessageLoop; | |
| 14 class ResourceDispatcherHost; | |
| 15 | |
| 16 namespace net { | |
| 17 class URLRequest; | |
| 18 } // namespace net | |
| 19 | |
| 20 // Used to buffer a request until enough data has been received. | |
| 21 class BufferedResourceHandler : public ResourceHandler { | |
| 22 public: | |
| 23 BufferedResourceHandler(ResourceHandler* handler, | |
| 24 ResourceDispatcherHost* host, | |
| 25 net::URLRequest* request); | |
| 26 | |
| 27 // ResourceHandler implementation: | |
| 28 virtual bool OnUploadProgress(int request_id, uint64 position, uint64 size); | |
| 29 virtual bool OnRequestRedirected(int request_id, const GURL& new_url, | |
| 30 ResourceResponse* response, bool* defer); | |
| 31 virtual bool OnResponseStarted(int request_id, ResourceResponse* response); | |
| 32 virtual bool OnWillStart(int request_id, const GURL& url, bool* defer); | |
| 33 virtual bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size, | |
| 34 int min_size); | |
| 35 virtual bool OnReadCompleted(int request_id, int* bytes_read); | |
| 36 virtual bool OnResponseCompleted(int request_id, | |
| 37 const net::URLRequestStatus& status, | |
| 38 const std::string& security_info); | |
| 39 virtual void OnRequestClosed(); | |
| 40 | |
| 41 private: | |
| 42 virtual ~BufferedResourceHandler(); | |
| 43 | |
| 44 // Returns true if we should delay OnResponseStarted forwarding. | |
| 45 bool DelayResponse(); | |
| 46 | |
| 47 // Returns true if there will be a need to parse the DocType of the document | |
| 48 // to determine the right way to handle it. | |
| 49 bool ShouldBuffer(const GURL& url, const std::string& mime_type); | |
| 50 | |
| 51 // Returns true if there is enough information to process the DocType. | |
| 52 bool DidBufferEnough(int bytes_read); | |
| 53 | |
| 54 // Returns true if we have to keep buffering data. | |
| 55 bool KeepBuffering(int bytes_read); | |
| 56 | |
| 57 // Sends a pending OnResponseStarted notification. |in_complete| is true if | |
| 58 // this is invoked from |OnResponseCompleted|. | |
| 59 bool CompleteResponseStarted(int request_id, bool in_complete); | |
| 60 | |
| 61 // Returns true if we have to wait until the plugin list is generated. | |
| 62 bool ShouldWaitForPlugins(); | |
| 63 | |
| 64 // A test to determining whether the request should be forwarded to the | |
| 65 // download thread. If need_plugin_list was passed in and was set to true, | |
| 66 // that means that the check couldn't be fully done because the plugins aren't | |
| 67 // loaded. The function should be called again after the plugin list is | |
| 68 // loaded. | |
| 69 bool ShouldDownload(bool* need_plugin_list); | |
| 70 | |
| 71 // Informs the original ResourceHandler |real_handler_| that the response will | |
| 72 // be handled entirely by the new ResourceHandler |handler|. | |
| 73 // A reference to |handler| is acquired. | |
| 74 void UseAlternateResourceHandler(int request_id, ResourceHandler* handler); | |
| 75 | |
| 76 // Called on the file thread to load the list of plugins. | |
| 77 void LoadPlugins(); | |
| 78 | |
| 79 // Called on the IO thread once the list of plugins has been loaded. | |
| 80 void OnPluginsLoaded(); | |
| 81 | |
| 82 scoped_refptr<ResourceHandler> real_handler_; | |
| 83 scoped_refptr<ResourceResponse> response_; | |
| 84 ResourceDispatcherHost* host_; | |
| 85 net::URLRequest* request_; | |
| 86 scoped_refptr<net::IOBuffer> read_buffer_; | |
| 87 scoped_refptr<net::IOBuffer> my_buffer_; | |
| 88 int read_buffer_size_; | |
| 89 int bytes_read_; | |
| 90 bool sniff_content_; | |
| 91 bool should_buffer_; | |
| 92 bool wait_for_plugins_; | |
| 93 bool buffering_; | |
| 94 bool finished_; | |
| 95 | |
| 96 DISALLOW_COPY_AND_ASSIGN(BufferedResourceHandler); | |
| 97 }; | |
| 98 | 11 |
| 99 #endif // CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ | 12 #endif // CHROME_BROWSER_RENDERER_HOST_BUFFERED_RESOURCE_HANDLER_H_ |
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