Move download messages from Renderer to Frame filter.

content/browser/frame_host/render_frame_message_filter.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/frame_host/render_frame_message_filter.h"
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_util.h"
 #include "build/build_config.h"
 #include "content/browser/bad_message.h"
 #include "content/browser/child_process_security_policy_impl.h"
+#include "content/browser/download/download_stats.h"
+#include "content/browser/fileapi/chrome_blob_storage_context.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/renderer_host/render_widget_helper.h"
+#include "content/browser/resource_context_impl.h"
+#include "content/common/content_constants_internal.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/download_manager.h"
+#include "content/public/browser/download_url_parameters.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
 #include "net/cookies/cookie_options.h"
 #include "net/cookies/cookie_store.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
+#include "storage/browser/blob/blob_storage_context.h"
 #include "url/gurl.h"
 
 #if !defined(OS_MACOSX)
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 #endif
 
 #if defined(ENABLE_PLUGINS)
 #include "content/browser/plugin_service_impl.h"
 #include "content/browser/ppapi_plugin_process_host.h"
@@ skipping 24 matching lines @@
       RenderFrameHostImpl::FromID(process_id, parent_routing_id);
   // Handles the RenderFrameHost being deleted on the UI thread while
   // processing a subframe creation message.
   if (render_frame_host) {
     render_frame_host->OnCreateChildFrame(new_routing_id, scope, frame_name,
                                           frame_unique_name, sandbox_flags,
                                           frame_owner_properties);
   }
 }
 
+void DownloadUrlOnUIThread(std::unique_ptr<DownloadUrlParameters> parameters) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  RenderProcessHost* render_process_host =
+      RenderProcessHost::FromID(parameters->render_process_host_id());
+  if (!render_process_host)
+    return;
+
+  BrowserContext* browser_context = render_process_host->GetBrowserContext();
+  DownloadManager* download_manager =
+      BrowserContext::GetDownloadManager(browser_context);
+  RecordDownloadSource(INITIATED_BY_RENDERER);
+  download_manager->DownloadUrl(std::move(parameters));
+}
+
 // Common functionality for converting a sync renderer message to a callback
 // function in the browser. Derive from this, create it on the heap when
 // issuing your callback. When done, write your reply parameters into
 // reply_msg(), and then call SendReplyAndDeleteThis().
 class RenderMessageCompletionCallback {
  public:
   RenderMessageCompletionCallback(RenderFrameMessageFilter* filter,
                                   IPC::Message* reply_msg)
       : filter_(filter),
         reply_msg_(reply_msg) {
@@ skipping 117 matching lines @@
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 }
 
 bool RenderFrameMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(RenderFrameMessageFilter, message)
     IPC_MESSAGE_HANDLER(FrameHostMsg_CreateChildFrame, OnCreateChildFrame)
     IPC_MESSAGE_HANDLER(FrameHostMsg_SetCookie, OnSetCookie)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_GetCookies, OnGetCookies)
     IPC_MESSAGE_HANDLER(FrameHostMsg_CookiesEnabled, OnCookiesEnabled)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_DownloadUrl, OnDownloadUrl)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_SaveImageFromDataURL,
+                        OnSaveImageFromDataURL)
     IPC_MESSAGE_HANDLER(FrameHostMsg_Are3DAPIsBlocked, OnAre3DAPIsBlocked)
     IPC_MESSAGE_HANDLER_GENERIC(FrameHostMsg_RenderProcessGone,
                                 OnRenderProcessGone())
 #if defined(ENABLE_PLUGINS)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_GetPlugins, OnGetPlugins)
     IPC_MESSAGE_HANDLER(FrameHostMsg_GetPluginInfo, OnGetPluginInfo)
     IPC_MESSAGE_HANDLER_DELAY_REPLY(FrameHostMsg_OpenChannelToPepperPlugin,
                                     OnOpenChannelToPepperPlugin)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidCreateOutOfProcessPepperInstance,
                         OnDidCreateOutOfProcessPepperInstance)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidDeleteOutOfProcessPepperInstance,
                         OnDidDeleteOutOfProcessPepperInstance)
     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenChannelToPpapiBroker,
                         OnOpenChannelToPpapiBroker)
     IPC_MESSAGE_HANDLER(FrameHostMsg_PluginInstanceThrottleStateChange,
                         OnPluginInstanceThrottleStateChange)
 #endif  // ENABLE_PLUGINS
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
+void RenderFrameMessageFilter::DownloadUrl(int render_view_id,
+                                           int render_frame_id,
+                                           const GURL& url,
+                                           const Referrer& referrer,
+                                           const base::string16& suggested_name,
+                                           const bool use_prompt) const {
+  if (!resource_context_)
+    return;
+
+  std::unique_ptr<DownloadUrlParameters> parameters(
+      new DownloadUrlParameters(url, render_process_id_, render_view_id,

[Charlie Reis, 2016/05/13 21:50:22]

Someday we should remove the use of RenderView ID and RenderProcess ID as the
way to identify a WebContents in DownloadUrlParameters, but it's not for this
CL.

+                                render_frame_id, request_context_.get()));
+  parameters->set_content_initiated(true);
+  parameters->set_suggested_name(suggested_name);
+  parameters->set_prompt(use_prompt);
+  parameters->set_referrer(referrer);
+
+  if (url.SchemeIsBlob()) {
+    ChromeBlobStorageContext* blob_context =
+        GetChromeBlobStorageContextForResourceContext(resource_context_);
+    parameters->set_blob_data_handle(
+        blob_context->context()->GetBlobDataFromPublicURL(url));
+    // Don't care if the above fails. We are going to let the download go
+    // through and allow it to be interrupted so that the embedder can deal.
+  }
+
+  BrowserThread::PostTask(
+      BrowserThread::UI, FROM_HERE,
+      base::Bind(&DownloadUrlOnUIThread, base::Passed(&parameters)));
+}
+
 void RenderFrameMessageFilter::OnCreateChildFrame(
     const FrameHostMsg_CreateChildFrame_Params& params,
     int* new_routing_id) {
   *new_routing_id = render_widget_helper_->GetNextRoutingID();
   BrowserThread::PostTask(
       BrowserThread::UI, FROM_HERE,
       base::Bind(&CreateChildFrameOnUI, render_process_id_,
                  params.parent_routing_id, params.scope, params.frame_name,
                  params.frame_unique_name, params.sandbox_flags,
                  params.frame_owner_properties, *new_routing_id));
@@ skipping 105 matching lines @@
   }
 }
 
 void RenderFrameMessageFilter::SendGetCookiesResponse(
     IPC::Message* reply_msg,
     const std::string& cookies) {
   FrameHostMsg_GetCookies::WriteReplyParams(reply_msg, cookies);
   Send(reply_msg);
 }
 
+void RenderFrameMessageFilter::OnDownloadUrl(
+    int render_view_id,
+    int render_frame_id,
+    const GURL& url,
+    const Referrer& referrer,
+    const base::string16& suggested_name) {
+  DownloadUrl(render_view_id, render_frame_id, url, referrer, suggested_name,
+              false);
+}
+
+void RenderFrameMessageFilter::OnSaveImageFromDataURL(
+    int render_view_id,
+    int render_frame_id,
+    const std::string& url_str) {
+  // Please refer to RenderViewImpl::saveImageFromDataURL().
+  if (url_str.length() >= kMaxLengthOfDataURLString)
+    return;
+
+  GURL data_url(url_str);
+  if (!data_url.is_valid() || !data_url.SchemeIs(url::kDataScheme))
+    return;
+
+  DownloadUrl(render_view_id, render_frame_id, data_url, Referrer(),
+              base::string16(), true);
+}
+
 void RenderFrameMessageFilter::OnAre3DAPIsBlocked(int render_frame_id,
                                                   const GURL& top_origin_url,
                                                   ThreeDAPIType requester,
                                                   bool* blocked) {
   *blocked = GpuDataManagerImpl::GetInstance()->Are3DAPIsBlocked(
       top_origin_url, render_process_id_, render_frame_id, requester);
 }
 
 void RenderFrameMessageFilter::OnRenderProcessGone() {
   // FrameHostMessage_RenderProcessGone is a synthetic IPC message used by
@@ skipping 151 matching lines @@
   net::URLRequestContext* context =
       GetContentClient()->browser()->OverrideRequestContextForURL(
           url, resource_context_);
   if (!context)
     context = request_context_->GetURLRequestContext();
 
   return context;
 }
 
 }  // namespace content