chrome/browser/android/intercept_download_resource_throttle.cc

   1 // Copyright (c) 2012 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 #include "chrome/browser/android/intercept_download_resource_throttle.h"
   6
   7 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_headers.h"
   8 #include "content/public/browser/android/download_controller_android.h"
   9 #include "content/public/browser/resource_controller.h"
  10 #include "net/http/http_request_headers.h"
  11 #include "net/http/http_response_headers.h"
  12 #include "net/url_request/url_request.h"
  13
  14 namespace chrome {
  15
  16 InterceptDownloadResourceThrottle::InterceptDownloadResourceThrottle(
  17     net::URLRequest* request,
  18     int render_process_id,
  19     int render_view_id,
  20     int request_id)
  21     : request_(request),
  22       render_process_id_(render_process_id),
  23       render_view_id_(render_view_id),
  24       request_id_(request_id) {
  25 }
  26
  27 InterceptDownloadResourceThrottle::~InterceptDownloadResourceThrottle() {
  28 }
  29
  30 void InterceptDownloadResourceThrottle::WillProcessResponse(bool* defer) {
  31   ProcessDownloadRequest();
  32 }
  33
  34 const char* InterceptDownloadResourceThrottle::GetNameForLogging() const {
  35   return "InterceptDownloadResourceThrottle";
  36 }
  37
  38 void InterceptDownloadResourceThrottle::ProcessDownloadRequest() {
  39   if (request_->url_chain().empty())
  40     return;
  41
  42   GURL url = request_->url_chain().back();
  43   if (!url.SchemeIsHTTPOrHTTPS())
  44     return;
  45
  46   if (request_->method() != net::HttpRequestHeaders::kGetMethod)
  47     return;
  48
  49   net::HttpRequestHeaders headers;
  50   if (!request_->GetFullRequestHeaders(&headers))
  51     return;
  52
  53   // In general, if the request uses HTTP authorization, either with the origin
  54   // or a proxy, then the network stack should handle the download. The one
  55   // exception is a request that is fetched via the Chrome Proxy and does not
  56   // authenticate with the origin.
  57   if (request_->response_info().did_use_http_auth) {
  58     if (headers.HasHeader(net::HttpRequestHeaders::kAuthorization) ||
  59         !(request_->response_info().headers.get() &&
  60           data_reduction_proxy::HasDataReductionProxyViaHeader(
  61               request_->response_info().headers.get(), NULL))) {
  62       return;
  63     }
  64   }
  65
  66   content::DownloadControllerAndroid::Get()->CreateGETDownload(
  67       render_process_id_, render_view_id_, request_id_);
  68   controller()->Cancel();
  69 }
  70
  71 }  // namespace chrome