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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/socket/ssl_client_socket.h"
#include <string>
#include "base/feature_list.h"
#include "base/logging.h"
#include "base/observer_list.h"
#include "net/base/features.h"
#include "net/socket/ssl_client_socket_impl.h"
#include "net/socket/stream_socket.h"
#include "net/ssl/ssl_client_session_cache.h"
#include "net/ssl/ssl_key_logger.h"
namespace net {
SSLClientSocket::SSLClientSocket() = default;
// static
void SSLClientSocket::SetSSLKeyLogger(std::unique_ptr<SSLKeyLogger> logger) {
SSLClientSocketImpl::SetSSLKeyLogger(std::move(logger));
}
// static
std::vector<uint8_t> SSLClientSocket::SerializeNextProtos(
const NextProtoVector& next_protos) {
std::vector<uint8_t> wire_protos;
for (const NextProto next_proto : next_protos) {
const std::string proto = NextProtoToString(next_proto);
if (proto.size() > 255) {
LOG(WARNING) << "Ignoring overlong ALPN protocol: " << proto;
continue;
}
if (proto.size() == 0) {
LOG(WARNING) << "Ignoring empty ALPN protocol";
continue;
}
wire_protos.push_back(proto.size());
for (const char ch : proto) {
wire_protos.push_back(static_cast<uint8_t>(ch));
}
}
return wire_protos;
}
SSLClientContext::SSLClientContext(
SSLConfigService* ssl_config_service,
CertVerifier* cert_verifier,
TransportSecurityState* transport_security_state,
CTPolicyEnforcer* ct_policy_enforcer,
SSLClientSessionCache* ssl_client_session_cache,
SCTAuditingDelegate* sct_auditing_delegate)
: ssl_config_service_(ssl_config_service),
cert_verifier_(cert_verifier),
transport_security_state_(transport_security_state),
ct_policy_enforcer_(ct_policy_enforcer),
ssl_client_session_cache_(ssl_client_session_cache),
sct_auditing_delegate_(sct_auditing_delegate) {
CHECK(cert_verifier_);
CHECK(transport_security_state_);
CHECK(ct_policy_enforcer_);
if (ssl_config_service_) {
config_ = ssl_config_service_->GetSSLContextConfig();
ssl_config_service_->AddObserver(this);
}
CertDatabase::GetInstance()->AddObserver(this);
}
SSLClientContext::~SSLClientContext() {
if (ssl_config_service_) {
ssl_config_service_->RemoveObserver(this);
}
CertDatabase::GetInstance()->RemoveObserver(this);
}
bool SSLClientContext::EncryptedClientHelloEnabled() const {
return config_.ech_enabled &&
base::FeatureList::IsEnabled(features::kEncryptedClientHello);
}
std::unique_ptr<SSLClientSocket> SSLClientContext::CreateSSLClientSocket(
std::unique_ptr<StreamSocket> stream_socket,
const HostPortPair& host_and_port,
const SSLConfig& ssl_config) {
return std::make_unique<SSLClientSocketImpl>(this, std::move(stream_socket),
host_and_port, ssl_config);
}
bool SSLClientContext::GetClientCertificate(
const HostPortPair& server,
scoped_refptr<X509Certificate>* client_cert,
scoped_refptr<SSLPrivateKey>* private_key) {
return ssl_client_auth_cache_.Lookup(server, client_cert, private_key);
}
void SSLClientContext::SetClientCertificate(
const HostPortPair& server,
scoped_refptr<X509Certificate> client_cert,
scoped_refptr<SSLPrivateKey> private_key) {
ssl_client_auth_cache_.Add(server, std::move(client_cert),
std::move(private_key));
if (ssl_client_session_cache_) {
// Session resumption bypasses client certificate negotiation, so flush all
// associated sessions when preferences change.
ssl_client_session_cache_->FlushForServer(server);
}
NotifySSLConfigForServerChanged(server);
}
bool SSLClientContext::ClearClientCertificate(const HostPortPair& server) {
if (!ssl_client_auth_cache_.Remove(server)) {
return false;
}
if (ssl_client_session_cache_) {
// Session resumption bypasses client certificate negotiation, so flush all
// associated sessions when preferences change.
ssl_client_session_cache_->FlushForServer(server);
}
NotifySSLConfigForServerChanged(server);
return true;
}
void SSLClientContext::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void SSLClientContext::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
void SSLClientContext::OnSSLContextConfigChanged() {
// TODO(davidben): Should we flush |ssl_client_session_cache_| here? We flush
// the socket pools, but not the session cache. While BoringSSL-based servers
// never change version or cipher negotiation based on client-offered
// sessions, other servers do.
config_ = ssl_config_service_->GetSSLContextConfig();
NotifySSLConfigChanged(false /* not a cert database change */);
}
void SSLClientContext::OnCertDBChanged() {
// Both the trust store and client certificate store may have changed.
ssl_client_auth_cache_.Clear();
if (ssl_client_session_cache_) {
ssl_client_session_cache_->Flush();
}
NotifySSLConfigChanged(true /* cert database change */);
}
void SSLClientContext::NotifySSLConfigChanged(bool is_cert_database_change) {
for (Observer& observer : observers_) {
observer.OnSSLConfigChanged(is_cert_database_change);
}
}
void SSLClientContext::NotifySSLConfigForServerChanged(
const HostPortPair& server) {
for (Observer& observer : observers_) {
observer.OnSSLConfigForServerChanged(server);
}
}
} // namespace net
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