Introduce the ability to require CT for specific hosts

net/http/transport_security_state.cc

 // 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 "net/http/transport_security_state.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 
@@ skipping 595 matching lines @@
                   << hostname;
     return false;
   }
 
   return found;
 }
 
 }  // namespace
 
 TransportSecurityState::TransportSecurityState()
-    : delegate_(nullptr),
-      report_sender_(nullptr),
-      enable_static_pins_(true),
+    : enable_static_pins_(true),
       enable_static_expect_ct_(true),
       enable_static_expect_staple_(false),
-      expect_ct_reporter_(nullptr),
       sent_reports_cache_(kMaxHPKPReportCacheEntries) {
 // Static pinning is only enabled for official builds to make sure that
 // others don't end up with pins that cannot be easily updated.
 #if !defined(OFFICIAL_BUILD) || defined(OS_ANDROID) || defined(OS_IOS)
   enable_static_pins_ = false;
   enable_static_expect_ct_ = false;
 #endif
   DCHECK(CalledOnValidThread());
 }
 
@@ skipping 63 matching lines @@
   STSState unused;
   PKPState static_pkp_state;
   if (GetStaticDomainState(host, &unused, &static_pkp_state)) {
     if (static_pkp_state.HasPublicKeyPins())
       return true;
   }
 
   return false;
 }
 
+bool TransportSecurityState::ShouldRequireCT(
+    const std::string& hostname,
+    const X509Certificate* validated_certificate_chain,
+    const HashValueVector& public_key_hashes) {
+  using CTRequirementLevel = RequireCTDelegate::CTRequirementLevel;
+
+  CTRequirementLevel ct_required = CTRequirementLevel::DEFAULT;
+  if (require_ct_delegate_)
+    ct_required = require_ct_delegate_->IsCTRequiredForHost(hostname);
+  if (ct_required != CTRequirementLevel::DEFAULT)
+    return ct_required == CTRequirementLevel::REQUIRED;
+
+  return false;
+}
+
 void TransportSecurityState::SetDelegate(
     TransportSecurityState::Delegate* delegate) {
   DCHECK(CalledOnValidThread());
   delegate_ = delegate;
 }
 
 void TransportSecurityState::SetReportSender(
     TransportSecurityState::ReportSenderInterface* report_sender) {
   DCHECK(CalledOnValidThread());
   report_sender_ = report_sender;
   if (report_sender_)
     report_sender_->SetErrorCallback(base::Bind(RecordUMAForHPKPReportFailure));
 }
 
 void TransportSecurityState::SetExpectCTReporter(
     ExpectCTReporter* expect_ct_reporter) {
   DCHECK(CalledOnValidThread());
   expect_ct_reporter_ = expect_ct_reporter;
 }
 
+void TransportSecurityState::SetRequireCTDelegate(RequireCTDelegate* delegate) {
+  DCHECK(CalledOnValidThread());
+  require_ct_delegate_ = delegate;
+}
+
 void TransportSecurityState::AddHSTSInternal(
     const std::string& host,
     TransportSecurityState::STSState::UpgradeMode upgrade_mode,
     const base::Time& expiry,
     bool include_subdomains) {
   DCHECK(CalledOnValidThread());
 
   STSState sts_state;
   sts_state.last_observed = base::Time::Now();
   sts_state.include_subdomains = include_subdomains;
@@ skipping 658 matching lines @@
 TransportSecurityState::PKPStateIterator::PKPStateIterator(
     const TransportSecurityState& state)
     : iterator_(state.enabled_pkp_hosts_.begin()),
       end_(state.enabled_pkp_hosts_.end()) {
 }
 
 TransportSecurityState::PKPStateIterator::~PKPStateIterator() {
 }
 
 }  // namespace