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| 1 // Copyright (c) 2017 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 "components/subresource_filter/content/browser/subresource_filter_safe_
browsing_activation_throttle.h" |
| 6 |
| 7 #include <vector> |
| 8 |
| 9 #include "base/timer/timer.h" |
| 10 #include "components/safe_browsing_db/v4_local_database_manager.h" |
| 11 #include "components/subresource_filter/content/browser/content_subresource_filt
er_driver_factory.h" |
| 12 #include "content/public/browser/browser_thread.h" |
| 13 #include "content/public/browser/navigation_handle.h" |
| 14 #include "content/public/browser/web_contents.h" |
| 15 |
| 16 namespace { |
| 17 |
| 18 // Maximum time in milliseconds to wait for the Safe Browsing service to |
| 19 // verify a URL. After this amount of time the outstanding check will be |
| 20 // aborted, and the URL will be treated as if it didn't belong to the |
| 21 // Subresource Filter only list. |
| 22 constexpr base::TimeDelta kCheckURLTimeout = base::TimeDelta::FromSeconds(5); |
| 23 |
| 24 } // namespace |
| 25 |
| 26 namespace subresource_filter { |
| 27 |
| 28 class SubresourceFilterSafeBrowsingActivationThrottle::SBDatabaseClient |
| 29 : public safe_browsing::SafeBrowsingDatabaseManager::Client { |
| 30 public: |
| 31 SBDatabaseClient( |
| 32 scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager> |
| 33 database_manager, |
| 34 base::WeakPtr<SubresourceFilterSafeBrowsingActivationThrottle> throttle, |
| 35 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner) |
| 36 : database_manager_(std::move(database_manager)), |
| 37 throttle_(throttle), |
| 38 io_task_runner_(io_task_runner) {} |
| 39 |
| 40 ~SBDatabaseClient() override { |
| 41 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 42 database_manager_->CancelCheck(this); |
| 43 } |
| 44 |
| 45 void CheckUrlOnIO(const GURL& url) { |
| 46 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 47 DCHECK(!url.is_empty()); |
| 48 url_being_checked_ = url; |
| 49 if (database_manager_->CheckUrlForSubresourceFilter(url, this)) { |
| 50 OnCheckBrowseUrlResult(url, safe_browsing::SB_THREAT_TYPE_SAFE, |
| 51 safe_browsing::ThreatMetadata()); |
| 52 return; |
| 53 } |
| 54 timer_.Start(FROM_HERE, kCheckURLTimeout, this, |
| 55 &SubresourceFilterSafeBrowsingActivationThrottle:: |
| 56 SBDatabaseClient::OnCheckUrlTimeout); |
| 57 } |
| 58 |
| 59 void OnCheckBrowseUrlResult( |
| 60 const GURL& url, |
| 61 safe_browsing::SBThreatType threat_type, |
| 62 const safe_browsing::ThreatMetadata& metadata) override { |
| 63 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 64 DCHECK_EQ(url_being_checked_, url); |
| 65 timer_.Stop(); // Cancel the timeout timer. |
| 66 io_task_runner_->PostTask( |
| 67 FROM_HERE, |
| 68 base::Bind(&SubresourceFilterSafeBrowsingActivationThrottle:: |
| 69 OnCheckUrlResultOnUI, |
| 70 throttle_, url, threat_type, metadata.threat_pattern_type)); |
| 71 } |
| 72 |
| 73 // Callback for when the safe browsing check has taken longer than |
| 74 // kCheckURLTimeout. |
| 75 void OnCheckUrlTimeout() { |
| 76 DCHECK_CURRENTLY_ON(content::BrowserThread::IO); |
| 77 database_manager_->CancelCheck(this); |
| 78 |
| 79 OnCheckBrowseUrlResult(url_being_checked_, |
| 80 safe_browsing::SB_THREAT_TYPE_SAFE, |
| 81 safe_browsing::ThreatMetadata()); |
| 82 } |
| 83 |
| 84 private: |
| 85 scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager> database_manager_; |
| 86 |
| 87 // Timer to abort the safe browsing check if it takes too long. |
| 88 base::OneShotTimer timer_; |
| 89 GURL url_being_checked_; |
| 90 |
| 91 base::WeakPtr<SubresourceFilterSafeBrowsingActivationThrottle> throttle_; |
| 92 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_; |
| 93 |
| 94 DISALLOW_COPY_AND_ASSIGN(SBDatabaseClient); |
| 95 }; |
| 96 |
| 97 SubresourceFilterSafeBrowsingActivationThrottle:: |
| 98 SubresourceFilterSafeBrowsingActivationThrottle( |
| 99 content::NavigationHandle* handle, |
| 100 scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager> |
| 101 database_manager) |
| 102 : NavigationThrottle(handle), |
| 103 io_task_runner_(content::BrowserThread::GetTaskRunnerForThread( |
| 104 content::BrowserThread::IO)), |
| 105 database_client_( |
| 106 new SubresourceFilterSafeBrowsingActivationThrottle::SBDatabaseClient( |
| 107 std::move(database_manager), |
| 108 AsWeakPtr(), |
| 109 base::ThreadTaskRunnerHandle::Get()), |
| 110 base::OnTaskRunnerDeleter(io_task_runner_)) {} |
| 111 |
| 112 SubresourceFilterSafeBrowsingActivationThrottle:: |
| 113 ~SubresourceFilterSafeBrowsingActivationThrottle() {} |
| 114 |
| 115 content::NavigationThrottle::ThrottleCheckResult |
| 116 SubresourceFilterSafeBrowsingActivationThrottle::WillProcessResponse() { |
| 117 io_task_runner_->PostTask( |
| 118 FROM_HERE, base::Bind(&SubresourceFilterSafeBrowsingActivationThrottle:: |
| 119 SBDatabaseClient::CheckUrlOnIO, |
| 120 base::Unretained(database_client_.get()), |
| 121 navigation_handle()->GetURL())); |
| 122 return content::NavigationThrottle::ThrottleCheckResult::DEFER; |
| 123 } |
| 124 |
| 125 void SubresourceFilterSafeBrowsingActivationThrottle::OnCheckUrlResultOnUI( |
| 126 const GURL& url, |
| 127 safe_browsing::SBThreatType threat_type, |
| 128 safe_browsing::ThreatPatternType pattern_type) { |
| 129 content::WebContents* web_contents = navigation_handle()->GetWebContents(); |
| 130 if (web_contents) { |
| 131 using subresource_filter::ContentSubresourceFilterDriverFactory; |
| 132 ContentSubresourceFilterDriverFactory* driver_factory = |
| 133 ContentSubresourceFilterDriverFactory::FromWebContents(web_contents); |
| 134 DCHECK(driver_factory); |
| 135 |
| 136 driver_factory->OnMainResourceMatchedSafeBrowsingBlacklist( |
| 137 url, std::vector<GURL>(), threat_type, pattern_type); |
| 138 } |
| 139 // TODO(https://crbug.com/704508): We should measure the delay introduces by |
| 140 // this check. Similarly, as it's done the Safe Browsing Resource throttle. |
| 141 navigation_handle()->Resume(); |
| 142 } |
| 143 |
| 144 } // namespace subresource_filter |
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