content/renderer/pepper/pepper_url_loader_host.h

   1 // Copyright (c) 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_PEPPER_PEPPER_URL_LOADER_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_URL_LOADER_HOST_H_
   7
   8 #include <vector>
   9
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "content/common/content_export.h"
  13 #include "ppapi/host/resource_host.h"
  14 #include "ppapi/proxy/resource_message_params.h"
  15 #include "ppapi/shared_impl/url_request_info_data.h"
  16 #include "ppapi/shared_impl/url_response_info_data.h"
  17 #include "third_party/WebKit/public/platform/WebURLLoaderClient.h"
  18
  19 namespace blink {
  20 class WebLocalFrame;
  21 class WebURLLoader;
  22 }
  23
  24 namespace content {
  25
  26 class RendererPpapiHostImpl;
  27
  28 class PepperURLLoaderHost : public ppapi::host::ResourceHost,
  29                             public blink::WebURLLoaderClient {
  30  public:
  31   // If main_document_loader is true, PP_Resource must be 0 since it will be
  32   // pending until the plugin resource attaches to it.
  33   PepperURLLoaderHost(RendererPpapiHostImpl* host,
  34                       bool main_document_loader,
  35                       PP_Instance instance,
  36                       PP_Resource resource);
  37   virtual ~PepperURLLoaderHost();
  38
  39   // ResourceHost implementation.
  40   int32_t OnResourceMessageReceived(
  41       const IPC::Message& msg,
  42       ppapi::host::HostMessageContext* context) override;
  43
  44   // blink::WebURLLoaderClient implementation.
  45   virtual void willSendRequest(blink::WebURLLoader* loader,
  46                                blink::WebURLRequest& new_request,
  47                                const blink::WebURLResponse& redir_response);
  48   virtual void didSendData(blink::WebURLLoader* loader,
  49                            unsigned long long bytes_sent,
  50                            unsigned long long total_bytes_to_be_sent);
  51   virtual void didReceiveResponse(blink::WebURLLoader* loader,
  52                                   const blink::WebURLResponse& response);
  53   virtual void didDownloadData(blink::WebURLLoader* loader,
  54                                int data_length,
  55                                int encoded_data_length);
  56   virtual void didReceiveData(blink::WebURLLoader* loader,
  57                               const char* data,
  58                               int data_length,
  59                               int encoded_data_length);
  60   virtual void didFinishLoading(blink::WebURLLoader* loader,
  61                                 double finish_time,
  62                                 int64_t total_encoded_data_length);
  63   virtual void didFail(blink::WebURLLoader* loader,
  64                        const blink::WebURLError& error);
  65
  66  private:
  67   // ResourceHost protected overrides.
  68   void DidConnectPendingHostToResource() override;
  69
  70   // IPC messages
  71   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
  72                         const ppapi::URLRequestInfoData& request_data);
  73   int32_t InternalOnHostMsgOpen(ppapi::host::HostMessageContext* context,
  74                                 const ppapi::URLRequestInfoData& request_data);
  75   int32_t OnHostMsgSetDeferLoading(ppapi::host::HostMessageContext* context,
  76                                    bool defers_loading);
  77   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
  78   int32_t OnHostMsgGrantUniversalAccess(
  79       ppapi::host::HostMessageContext* context);
  80
  81   // Sends or queues an unsolicited message to the plugin resource. This
  82   // handles cases where messages must be reordered for the plugin and
  83   // the case where we have created a pending host resource and the
  84   // plugin has not connected to us yet.
  85   //
  86   // Takes ownership of the given pointer.
  87   void SendUpdateToPlugin(IPC::Message* msg);
  88
  89   // Sends or queues an unsolicited message to the plugin resource. This is
  90   // used inside SendUpdateToPlugin for messages that are already ordered
  91   // properly.
  92   //
  93   // Takes ownership of the given pointer.
  94   void SendOrderedUpdateToPlugin(IPC::Message* msg);
  95
  96   void Close();
  97
  98   // Returns the frame for the current request.
  99   blink::WebLocalFrame* GetFrame();
 100
 101   // Calls SetDefersLoading on the current load. This encapsulates the logic
 102   // differences between document loads and regular ones.
 103   void SetDefersLoading(bool defers_loading);
 104
 105   // Converts a WebURLResponse to a URLResponseInfo and saves it.
 106   void SaveResponse(const blink::WebURLResponse& response);
 107   void DidDataFromWebURLResponse(const ppapi::URLResponseInfoData& data);
 108
 109   // Sends the UpdateProgress message (if necessary) to the plugin.
 110   void UpdateProgress();
 111
 112   // Non-owning pointer.
 113   RendererPpapiHostImpl* renderer_ppapi_host_;
 114
 115   // If true, then the plugin instance is a full-frame plugin and we're just
 116   // wrapping the main document's loader (i.e. loader_ is null).
 117   bool main_document_loader_;
 118
 119   // The data that generated the request.
 120   ppapi::URLRequestInfoData request_data_;
 121
 122   // Set to true when this loader can ignore same originl policy.
 123   bool has_universal_access_;
 124
 125   // The loader associated with this request. MAY BE NULL.
 126   //
 127   // This will be NULL if the load hasn't been opened yet, or if this is a main
 128   // document loader (when registered as a mime type). Therefore, you should
 129   // always NULL check this value before using it. In the case of a main
 130   // document load, you would call the functions on the document to cancel the
 131   // load, etc. since there is no loader.
 132   scoped_ptr<blink::WebURLLoader> loader_;
 133
 134   int64_t bytes_sent_;
 135   int64_t total_bytes_to_be_sent_;
 136   int64_t bytes_received_;
 137   int64_t total_bytes_to_be_received_;
 138
 139   // Messages sent while the resource host is pending. These will be forwarded
 140   // to the plugin when the plugin side connects. The pointers are owned by
 141   // this object and must be deleted.
 142   ScopedVector<IPC::Message> pending_replies_;
 143   ScopedVector<IPC::Message> out_of_order_replies_;
 144
 145   // True when there's a pending DataFromURLResponse call which will send a
 146   // PpapiPluginMsg_URLLoader_ReceivedResponse to the plugin, which introduces
 147   // ordering constraints on following messages to the plugin.
 148   bool pending_response_;
 149
 150   base::WeakPtrFactory<PepperURLLoaderHost> weak_factory_;
 151
 152   DISALLOW_COPY_AND_ASSIGN(PepperURLLoaderHost);
 153 };
 154
 155 }  // namespace content
 156
 157 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_URL_LOADER_HOST_H_