15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/browser/download/download_resource_throttle.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind.h" 8ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include "chrome/browser/download/download_stats.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/browser/resource_controller.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)DownloadResourceThrottle::DownloadResourceThrottle( 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DownloadRequestLimiter* limiter, 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int render_process_id, 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int render_view_id, 15cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) const GURL& url, 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& request_method) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : querying_limiter_(true), 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_allowed_(false), 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_deferred_(false) { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) limiter->CanDownloadOnIOThread( 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_process_id, 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) render_view_id, 23cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) url, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_method, 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&DownloadResourceThrottle::ContinueDownload, 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AsWeakPtr())); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)DownloadResourceThrottle::~DownloadResourceThrottle() { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void DownloadResourceThrottle::WillStartRequest(bool* defer) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WillDownload(defer); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void DownloadResourceThrottle::WillRedirectRequest(const GURL& new_url, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool* defer) { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WillDownload(defer); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void DownloadResourceThrottle::WillProcessResponse(bool* defer) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WillDownload(defer); 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 45a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)const char* DownloadResourceThrottle::GetNameForLogging() const { 46a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return "DownloadResourceThrottle"; 47a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles)} 48a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void DownloadResourceThrottle::WillDownload(bool* defer) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!request_deferred_); 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Defer the download until we have the DownloadRequestLimiter result. 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (querying_limiter_) { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_deferred_ = true; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *defer = true; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!request_allowed_) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->Cancel(); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void DownloadResourceThrottle::ContinueDownload(bool allow) { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) querying_limiter_ = false; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_allowed_ = allow; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (allow) { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Presumes all downloads initiated by navigation use this throttle and 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // nothing else does. 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch RecordDownloadSource(DOWNLOAD_INITIATED_BY_NAVIGATION); 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 72ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch RecordDownloadCount(CHROME_DOWNLOAD_COUNT_BLOCKED_BY_THROTTLING); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (request_deferred_) { 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) request_deferred_ = false; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (allow) { 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->Resume(); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) controller()->Cancel(); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 84