| // Copyright (c) 2012 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 "chrome/browser/ssl/ssl_blocking_page.h" |
| |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/callback_helpers.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/metrics/histogram.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/time/time.h" |
| #include "chrome/browser/browser_process.h" |
| #include "chrome/browser/interstitials/chrome_controller_client.h" |
| #include "chrome/browser/interstitials/chrome_metrics_helper.h" |
| #include "chrome/browser/profiles/profile.h" |
| #include "chrome/browser/renderer_preferences_util.h" |
| #include "chrome/browser/ssl/cert_report_helper.h" |
| #include "chrome/browser/ssl/ssl_cert_reporter.h" |
| #include "chrome/common/chrome_switches.h" |
| #include "chrome/common/pref_names.h" |
| #include "components/prefs/pref_service.h" |
| #include "components/security_interstitials/core/controller_client.h" |
| #include "components/security_interstitials/core/metrics_helper.h" |
| #include "components/security_interstitials/core/ssl_error_ui.h" |
| #include "content/public/browser/cert_store.h" |
| #include "content/public/browser/interstitial_page.h" |
| #include "content/public/browser/interstitial_page_delegate.h" |
| #include "content/public/browser/navigation_entry.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/common/renderer_preferences.h" |
| #include "content/public/common/ssl_status.h" |
| #include "net/base/net_errors.h" |
| |
| using base::TimeTicks; |
| using content::InterstitialPage; |
| using content::InterstitialPageDelegate; |
| using content::NavigationEntry; |
| using security_interstitials::SSLErrorUI; |
| |
| namespace { |
| |
| // Constants for the Experience Sampling instrumentation. |
| const char kEventNameBase[] = "ssl_interstitial_"; |
| const char kEventNotOverridable[] = "notoverridable_"; |
| const char kEventOverridable[] = "overridable_"; |
| |
| // Events for UMA. Do not reorder or change! |
| enum SSLExpirationAndDecision { |
| EXPIRED_AND_PROCEED, |
| EXPIRED_AND_DO_NOT_PROCEED, |
| NOT_EXPIRED_AND_PROCEED, |
| NOT_EXPIRED_AND_DO_NOT_PROCEED, |
| END_OF_SSL_EXPIRATION_AND_DECISION, |
| }; |
| |
| // Rappor prefix, which is used for both overridable and non-overridable |
| // interstitials so we don't leak the "overridable" bit. |
| const char kDeprecatedSSLRapporPrefix[] = "ssl2"; |
| const char kSSLRapporPrefix[] = "ssl3"; |
| |
| std::string GetSamplingEventName(const bool overridable, const int cert_error) { |
| std::string event_name(kEventNameBase); |
| if (overridable) |
| event_name.append(kEventOverridable); |
| else |
| event_name.append(kEventNotOverridable); |
| event_name.append(net::ErrorToString(cert_error)); |
| return event_name; |
| } |
| |
| void RecordSSLExpirationPageEventState(bool expired_but_previously_allowed, |
| bool proceed, |
| bool overridable) { |
| SSLExpirationAndDecision event; |
| if (expired_but_previously_allowed && proceed) |
| event = EXPIRED_AND_PROCEED; |
| else if (expired_but_previously_allowed && !proceed) |
| event = EXPIRED_AND_DO_NOT_PROCEED; |
| else if (!expired_but_previously_allowed && proceed) |
| event = NOT_EXPIRED_AND_PROCEED; |
| else |
| event = NOT_EXPIRED_AND_DO_NOT_PROCEED; |
| |
| if (overridable) { |
| UMA_HISTOGRAM_ENUMERATION( |
| "interstitial.ssl.expiration_and_decision.overridable", |
| event, |
| END_OF_SSL_EXPIRATION_AND_DECISION); |
| } else { |
| UMA_HISTOGRAM_ENUMERATION( |
| "interstitial.ssl.expiration_and_decision.nonoverridable", |
| event, |
| END_OF_SSL_EXPIRATION_AND_DECISION); |
| } |
| } |
| |
| } // namespace |
| |
| // static |
| InterstitialPageDelegate::TypeID SSLBlockingPage::kTypeForTesting = |
| &SSLBlockingPage::kTypeForTesting; |
| |
| // Note that we always create a navigation entry with SSL errors. |
| // No error happening loading a sub-resource triggers an interstitial so far. |
| SSLBlockingPage::SSLBlockingPage( |
| content::WebContents* web_contents, |
| int cert_error, |
| const net::SSLInfo& ssl_info, |
| const GURL& request_url, |
| int options_mask, |
| const base::Time& time_triggered, |
| std::unique_ptr<SSLCertReporter> ssl_cert_reporter, |
| const base::Callback<void(content::CertificateRequestResultType)>& callback) |
| : SecurityInterstitialPage(web_contents, request_url), |
| callback_(callback), |
| ssl_info_(ssl_info), |
| overridable_(IsOverridable( |
| options_mask, |
| Profile::FromBrowserContext(web_contents->GetBrowserContext()))), |
| expired_but_previously_allowed_( |
| (options_mask & SSLErrorUI::EXPIRED_BUT_PREVIOUSLY_ALLOWED) != 0), |
| controller_(new ChromeControllerClient(web_contents)) { |
| // Override prefs for the SSLErrorUI. |
| Profile* profile = |
| Profile::FromBrowserContext(web_contents->GetBrowserContext()); |
| if (profile && |
| !profile->GetPrefs()->GetBoolean(prefs::kSSLErrorOverrideAllowed)) { |
| options_mask |= SSLErrorUI::HARD_OVERRIDE_DISABLED; |
| } |
| if (overridable_) |
| options_mask |= SSLErrorUI::SOFT_OVERRIDE_ENABLED; |
| else |
| options_mask &= ~SSLErrorUI::SOFT_OVERRIDE_ENABLED; |
| |
| // Set up the metrics helper for the SSLErrorUI. |
| security_interstitials::MetricsHelper::ReportDetails reporting_info; |
| reporting_info.metric_prefix = |
| overridable_ ? "ssl_overridable" : "ssl_nonoverridable"; |
| reporting_info.rappor_prefix = kSSLRapporPrefix; |
| reporting_info.deprecated_rappor_prefix = kDeprecatedSSLRapporPrefix; |
| reporting_info.rappor_report_type = rappor::LOW_FREQUENCY_UMA_RAPPOR_TYPE; |
| reporting_info.deprecated_rappor_report_type = rappor::UMA_RAPPOR_TYPE; |
| ChromeMetricsHelper* chrome_metrics_helper = |
| new ChromeMetricsHelper(web_contents, request_url, reporting_info, |
| GetSamplingEventName(overridable_, cert_error)); |
| chrome_metrics_helper->StartRecordingCaptivePortalMetrics(overridable_); |
| controller_->set_metrics_helper(base::WrapUnique(chrome_metrics_helper)); |
| |
| cert_report_helper_.reset(new CertReportHelper( |
| std::move(ssl_cert_reporter), web_contents, request_url, ssl_info, |
| certificate_reporting::ErrorReport::INTERSTITIAL_SSL, overridable_, |
| controller_->metrics_helper())); |
| |
| ssl_error_ui_.reset(new SSLErrorUI(request_url, cert_error, ssl_info, |
| options_mask, time_triggered, |
| controller_.get())); |
| |
| // Creating an interstitial without showing (e.g. from chrome://interstitials) |
| // it leaks memory, so don't create it here. |
| } |
| |
| bool SSLBlockingPage::ShouldCreateNewNavigation() const { |
| return true; |
| } |
| |
| InterstitialPageDelegate::TypeID SSLBlockingPage::GetTypeForTesting() const { |
| return SSLBlockingPage::kTypeForTesting; |
| } |
| |
| SSLBlockingPage::~SSLBlockingPage() { |
| if (!callback_.is_null()) { |
| // The page is closed without the user having chosen what to do, default to |
| // deny. |
| RecordSSLExpirationPageEventState( |
| expired_but_previously_allowed_, false, overridable_); |
| NotifyDenyCertificate(); |
| } |
| } |
| |
| void SSLBlockingPage::AfterShow() { |
| controller_->set_interstitial_page(interstitial_page()); |
| } |
| |
| void SSLBlockingPage::PopulateInterstitialStrings( |
| base::DictionaryValue* load_time_data) { |
| ssl_error_ui_->PopulateStringsForHTML(load_time_data); |
| cert_report_helper_->PopulateExtendedReportingOption(load_time_data); |
| } |
| |
| void SSLBlockingPage::OverrideEntry(NavigationEntry* entry) { |
| const int process_id = web_contents()->GetRenderProcessHost()->GetID(); |
| const int cert_id = content::CertStore::GetInstance()->StoreCert( |
| ssl_info_.cert.get(), process_id); |
| DCHECK(cert_id); |
| |
| entry->GetSSL() = content::SSLStatus( |
| content::SECURITY_STYLE_AUTHENTICATION_BROKEN, cert_id, ssl_info_); |
| } |
| |
| void SSLBlockingPage::SetSSLCertReporterForTesting( |
| std::unique_ptr<SSLCertReporter> ssl_cert_reporter) { |
| cert_report_helper_->SetSSLCertReporterForTesting( |
| std::move(ssl_cert_reporter)); |
| } |
| |
| // This handles the commands sent from the interstitial JavaScript. |
| void SSLBlockingPage::CommandReceived(const std::string& command) { |
| if (command == "\"pageLoadComplete\"") { |
| // content::WaitForRenderFrameReady sends this message when the page |
| // load completes. Ignore it. |
| return; |
| } |
| |
| int cmd = 0; |
| bool retval = base::StringToInt(command, &cmd); |
| DCHECK(retval); |
| ssl_error_ui_->HandleCommand( |
| static_cast<security_interstitials::SecurityInterstitialCommands>(cmd)); |
| } |
| |
| void SSLBlockingPage::OverrideRendererPrefs( |
| content::RendererPreferences* prefs) { |
| Profile* profile = Profile::FromBrowserContext( |
| web_contents()->GetBrowserContext()); |
| renderer_preferences_util::UpdateFromSystemSettings( |
| prefs, profile, web_contents()); |
| } |
| |
| void SSLBlockingPage::OnProceed() { |
| // Finish collecting metrics, if the user opted into it. |
| cert_report_helper_->FinishCertCollection( |
| certificate_reporting::ErrorReport::USER_PROCEEDED); |
| RecordSSLExpirationPageEventState( |
| expired_but_previously_allowed_, true, overridable_); |
| |
| // Accepting the certificate resumes the loading of the page. |
| DCHECK(!callback_.is_null()); |
| callback_.Run(content::CERTIFICATE_REQUEST_RESULT_TYPE_CONTINUE); |
| callback_.Reset(); |
| } |
| |
| void SSLBlockingPage::OnDontProceed() { |
| // Finish collecting metrics, if the user opted into it. |
| cert_report_helper_->FinishCertCollection( |
| certificate_reporting::ErrorReport::USER_DID_NOT_PROCEED); |
| RecordSSLExpirationPageEventState( |
| expired_but_previously_allowed_, false, overridable_); |
| |
| NotifyDenyCertificate(); |
| } |
| |
| void SSLBlockingPage::NotifyDenyCertificate() { |
| // It's possible that callback_ may not exist if the user clicks "Proceed" |
| // followed by pressing the back button before the interstitial is hidden. |
| // In that case the certificate will still be treated as allowed. |
| if (callback_.is_null()) |
| return; |
| |
| callback_.Run(content::CERTIFICATE_REQUEST_RESULT_TYPE_CANCEL); |
| callback_.Reset(); |
| } |
| |
| // static |
| bool SSLBlockingPage::IsOverridable(int options_mask, |
| const Profile* const profile) { |
| const bool is_overridable = |
| (options_mask & SSLErrorUI::SOFT_OVERRIDE_ENABLED) && |
| !(options_mask & SSLErrorUI::STRICT_ENFORCEMENT) && |
| profile->GetPrefs()->GetBoolean(prefs::kSSLErrorOverrideAllowed); |
| return is_overridable; |
| } |