106 lines
		
	
	
	
		
			3.5 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			106 lines
		
	
	
	
		
			3.5 KiB
			
		
	
	
	
		
			C++
		
	
	
	
	
	
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "atom/browser/atom_resource_dispatcher_host_delegate.h"
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#include "atom/browser/atom_browser_context.h"
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#include "atom/browser/web_contents_preferences.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/task/post_task.h"
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#include "content/public/browser/browser_task_traits.h"
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#include "content/public/browser/browser_thread.h"
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#include "content/public/browser/download_manager.h"
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#include "content/public/browser/render_frame_host.h"
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#include "electron/buildflags/buildflags.h"
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#include "net/base/escape.h"
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#include "url/gurl.h"
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#if BUILDFLAG(ENABLE_PDF_VIEWER)
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#include "atom/common/atom_constants.h"
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#include "base/strings/stringprintf.h"
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#include "content/public/browser/stream_info.h"
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#include "net/url_request/url_request.h"
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#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
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using content::BrowserThread;
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namespace atom {
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namespace {
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#if BUILDFLAG(ENABLE_PDF_VIEWER)
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void OnPdfResourceIntercepted(
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    const GURL& original_url,
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    int render_process_host_id,
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    int render_frame_id,
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    const content::ResourceRequestInfo::WebContentsGetter&
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        web_contents_getter) {
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  content::WebContents* web_contents = web_contents_getter.Run();
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  if (!web_contents)
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    return;
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  auto* web_preferences = WebContentsPreferences::From(web_contents);
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  if (!web_preferences || !web_preferences->IsEnabled(options::kPlugins)) {
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    auto* browser_context = web_contents->GetBrowserContext();
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    auto* download_manager =
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        content::BrowserContext::GetDownloadManager(browser_context);
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    download_manager->DownloadUrl(
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        content::DownloadUrlParameters::CreateForWebContentsMainFrame(
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            web_contents, original_url, NO_TRAFFIC_ANNOTATION_YET));
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    return;
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  }
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  // The URL passes the original pdf resource url, that will be requested
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  // by the webui page.
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  // chrome://pdf-viewer/index.html?src=https://somepage/123.pdf
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  content::NavigationController::LoadURLParams params(GURL(base::StringPrintf(
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      "%sindex.html?%s=%s", kPdfViewerUIOrigin, kPdfPluginSrc,
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      net::EscapeUrlEncodedData(original_url.spec(), false).c_str())));
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  content::RenderFrameHost* frame_host =
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      content::RenderFrameHost::FromID(render_process_host_id, render_frame_id);
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  if (!frame_host) {
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    return;
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  }
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  params.frame_tree_node_id = frame_host->GetFrameTreeNodeId();
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  web_contents->GetController().LoadURLWithParams(params);
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}
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#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
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}  // namespace
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AtomResourceDispatcherHostDelegate::AtomResourceDispatcherHostDelegate() {}
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bool AtomResourceDispatcherHostDelegate::ShouldInterceptResourceAsStream(
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    net::URLRequest* request,
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    const std::string& mime_type,
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    GURL* origin,
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    std::string* payload) {
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#if BUILDFLAG(ENABLE_PDF_VIEWER)
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  content::ResourceRequestInfo* info =
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      content::ResourceRequestInfo::ForRequest(request);
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  int render_process_host_id;
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  int render_frame_id;
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  if (!info->GetAssociatedRenderFrame(&render_process_host_id,
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                                      &render_frame_id)) {
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    return false;
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  }
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  if (mime_type == "application/pdf") {
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    *origin = GURL(kPdfViewerUIOrigin);
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    base::PostTaskWithTraits(
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        FROM_HERE, {BrowserThread::UI},
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        base::Bind(&OnPdfResourceIntercepted, request->url(),
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                   render_process_host_id, render_frame_id,
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                   info->GetWebContentsGetterForRequest()));
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    return true;
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  }
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#endif  // BUILDFLAG(ENABLE_PDF_VIEWER)
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  return false;
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}
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}  // namespace atom
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