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// Copyright 2015 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/cert_report_helper.h"
#include <utility>
#include "base/logging.h"
#include "base/metrics/field_trial.h"
#include "base/prefs/pref_service.h"
#include "base/rand_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ssl/ssl_cert_reporter.h"
#include "chrome/common/pref_names.h"
#include "chrome/grit/generated_resources.h"
#include "components/security_interstitials/core/controller_client.h"
#include "components/security_interstitials/core/metrics_helper.h"
#include "components/variations/variations_associated_data.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/web_contents.h"
#include "ui/base/l10n/l10n_util.h"
// Constants for the HTTPSErrorReporter Finch experiment
const char CertReportHelper::kFinchExperimentName[] = "ReportCertificateErrors";
const char CertReportHelper::kFinchGroupShowPossiblySend[] =
"ShowAndPossiblySend";
const char CertReportHelper::kFinchGroupDontShowDontSend[] =
"DontShowAndDontSend";
const char CertReportHelper::kFinchParamName[] = "sendingThreshold";
CertReportHelper::CertReportHelper(
scoped_ptr<SSLCertReporter> ssl_cert_reporter,
content::WebContents* web_contents,
const GURL& request_url,
const net::SSLInfo& ssl_info,
certificate_reporting::ErrorReport::InterstitialReason interstitial_reason,
bool overridable,
security_interstitials::MetricsHelper* metrics_helper)
: ssl_cert_reporter_(std::move(ssl_cert_reporter)),
web_contents_(web_contents),
request_url_(request_url),
ssl_info_(ssl_info),
interstitial_reason_(interstitial_reason),
overridable_(overridable),
metrics_helper_(metrics_helper) {}
CertReportHelper::~CertReportHelper() {
}
void CertReportHelper::PopulateExtendedReportingOption(
base::DictionaryValue* load_time_data) {
// Only show the checkbox if not off-the-record and if this client is
// part of the respective Finch group, and the feature is not disabled
// by policy.
const bool show = ShouldShowCertificateReporterCheckbox();
load_time_data->SetBoolean(security_interstitials::kDisplayCheckBox, show);
if (!show)
return;
load_time_data->SetBoolean(
security_interstitials::kBoxChecked,
IsPrefEnabled(prefs::kSafeBrowsingExtendedReportingEnabled));
const std::string privacy_link = base::StringPrintf(
security_interstitials::kPrivacyLinkHtml,
security_interstitials::CMD_OPEN_REPORTING_PRIVACY,
l10n_util::GetStringUTF8(IDS_SAFE_BROWSING_PRIVACY_POLICY_PAGE).c_str());
load_time_data->SetString(
security_interstitials::kOptInLink,
l10n_util::GetStringFUTF16(IDS_SAFE_BROWSING_MALWARE_REPORTING_AGREE,
base::UTF8ToUTF16(privacy_link)));
}
void CertReportHelper::FinishCertCollection(
certificate_reporting::ErrorReport::ProceedDecision user_proceeded) {
if (!ShouldShowCertificateReporterCheckbox())
return;
if (!IsPrefEnabled(prefs::kSafeBrowsingExtendedReportingEnabled))
return;
if (metrics_helper_) {
metrics_helper_->RecordUserInteraction(
security_interstitials::MetricsHelper::EXTENDED_REPORTING_IS_ENABLED);
}
if (!ShouldReportCertificateError())
return;
std::string serialized_report;
certificate_reporting::ErrorReport report(request_url_.host(), ssl_info_);
report.SetInterstitialInfo(
interstitial_reason_, user_proceeded,
overridable_
? certificate_reporting::ErrorReport::INTERSTITIAL_OVERRIDABLE
: certificate_reporting::ErrorReport::INTERSTITIAL_NOT_OVERRIDABLE);
if (!report.Serialize(&serialized_report)) {
LOG(ERROR) << "Failed to serialize certificate report.";
return;
}
ssl_cert_reporter_->ReportInvalidCertificateChain(serialized_report);
}
void CertReportHelper::SetSSLCertReporterForTesting(
scoped_ptr<SSLCertReporter> ssl_cert_reporter) {
ssl_cert_reporter_ = std::move(ssl_cert_reporter);
}
bool CertReportHelper::ShouldShowCertificateReporterCheckbox() {
#if defined(OS_IOS)
return false;
#else
// Only show the checkbox iff the user is part of the respective Finch group
// and the window is not incognito and the feature is not disabled by policy.
const bool in_incognito =
web_contents_->GetBrowserContext()->IsOffTheRecord();
return base::FieldTrialList::FindFullName(kFinchExperimentName) ==
kFinchGroupShowPossiblySend &&
!in_incognito &&
IsPrefEnabled(prefs::kSafeBrowsingExtendedReportingOptInAllowed);
#endif
}
bool CertReportHelper::ShouldReportCertificateError() {
#if !defined(OS_IOS)
DCHECK(ShouldShowCertificateReporterCheckbox());
// Even in case the checkbox was shown, we don't send error reports
// for all of these users. Check the Finch configuration for a sending
// threshold and only send reports in case the threshold isn't exceeded.
const std::string param =
variations::GetVariationParamValue(kFinchExperimentName, kFinchParamName);
if (!param.empty()) {
double sendingThreshold;
if (base::StringToDouble(param, &sendingThreshold)) {
if (sendingThreshold >= 0.0 && sendingThreshold <= 1.0)
return base::RandDouble() <= sendingThreshold;
}
}
#endif
return false;
}
bool CertReportHelper::IsPrefEnabled(const char* pref) {
Profile* profile =
Profile::FromBrowserContext(web_contents_->GetBrowserContext());
return profile->GetPrefs()->GetBoolean(pref);
}
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