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// 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/ssl/ssl_config_service.h"
#include "base/lazy_instance.h"
#include "base/synchronization/lock.h"
#include "net/ssl/ssl_config_service_defaults.h"
namespace net {
SSLConfigService::SSLConfigService()
: observer_list_(ObserverList<Observer>::NOTIFY_EXISTING_ONLY) {
}
// GlobalCRLSet holds a reference to the global CRLSet. It simply wraps a lock
// around a scoped_refptr so that getting a reference doesn't race with
// updating the CRLSet.
class GlobalCRLSet {
public:
void Set(const scoped_refptr<CRLSet>& new_crl_set) {
base::AutoLock locked(lock_);
crl_set_ = new_crl_set;
}
scoped_refptr<CRLSet> Get() const {
base::AutoLock locked(lock_);
return crl_set_;
}
private:
scoped_refptr<CRLSet> crl_set_;
mutable base::Lock lock_;
};
base::LazyInstance<GlobalCRLSet>::Leaky g_crl_set = LAZY_INSTANCE_INITIALIZER;
// static
void SSLConfigService::SetCRLSet(scoped_refptr<CRLSet> crl_set) {
// Note: this can be called concurently with GetCRLSet().
g_crl_set.Get().Set(crl_set);
}
// static
scoped_refptr<CRLSet> SSLConfigService::GetCRLSet() {
return g_crl_set.Get().Get();
}
void SSLConfigService::AddObserver(Observer* observer) {
observer_list_.AddObserver(observer);
}
void SSLConfigService::RemoveObserver(Observer* observer) {
observer_list_.RemoveObserver(observer);
}
void SSLConfigService::NotifySSLConfigChange() {
FOR_EACH_OBSERVER(Observer, observer_list_, OnSSLConfigChanged());
}
SSLConfigService::~SSLConfigService() {
}
void SSLConfigService::ProcessConfigUpdate(const SSLConfig& orig_config,
const SSLConfig& new_config) {
bool config_changed =
(orig_config.rev_checking_enabled != new_config.rev_checking_enabled) ||
(orig_config.rev_checking_required_local_anchors !=
new_config.rev_checking_required_local_anchors) ||
(orig_config.version_min != new_config.version_min) ||
(orig_config.version_max != new_config.version_max) ||
(orig_config.disabled_cipher_suites !=
new_config.disabled_cipher_suites) ||
(orig_config.channel_id_enabled != new_config.channel_id_enabled) ||
(orig_config.false_start_enabled != new_config.false_start_enabled) ||
(orig_config.require_forward_secrecy !=
new_config.require_forward_secrecy);
if (config_changed)
NotifySSLConfigChange();
}
// static
bool SSLConfigService::IsSNIAvailable(SSLConfigService* service) {
if (!service)
return false;
SSLConfig ssl_config;
service->GetSSLConfig(&ssl_config);
return ssl_config.version_max >= SSL_PROTOCOL_VERSION_TLS1;
}
} // namespace net
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