blob: 3be3a28e8ff47140136a6f42ed09481cf6832a75 [file] [log] [blame]
// 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 <memory>
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/sequence_checker.h"
#include "remoting/protocol/channel_authenticator.h"
namespace net {
class CertVerifier;
class CTPolicyEnforcer;
class CTVerifier;
class DrainableIOBuffer;
class GrowableIOBuffer;
class SSLClientContext;
class SSLServerContext;
class SSLSocket;
class TransportSecurityState;
} // namespace net
namespace remoting {
class RsaKeyPair;
namespace protocol {
// SslHmacChannelAuthenticator implements ChannelAuthenticator that
// secures channels using SSL and authenticates them with a shared
// secret HMAC.
// Please update network traffic annotation in the .cc file if this class is
// used for any new purposes.
class SslHmacChannelAuthenticator : public ChannelAuthenticator {
enum LegacyMode {
// CreateForClient() and CreateForHost() create an authenticator
// instances for client and host. |auth_key| specifies shared key
// known by both host and client. In case of V1Authenticator the
// |auth_key| is set to access code. For EKE-based authentication
// |auth_key| is the key established using EKE over the signaling
// channel.
static std::unique_ptr<SslHmacChannelAuthenticator> CreateForClient(
const std::string& remote_cert,
const std::string& auth_key);
static std::unique_ptr<SslHmacChannelAuthenticator> CreateForHost(
const std::string& local_cert,
scoped_refptr<RsaKeyPair> key_pair,
const std::string& auth_key);
~SslHmacChannelAuthenticator() override;
// ChannelAuthenticator interface.
void SecureAndAuthenticate(std::unique_ptr<P2PStreamSocket> socket,
const DoneCallback& done_callback) override;
class P2PStreamSocketAdapter;
// P2PStreamSocketAdater outlives the SslHmacChannelAuthenticator, but SSL
// sockets must not outlive their context structures. SslSocketContext bundles
// them together for convenience.
struct SslSocketContext {
SslSocketContext& operator=(SslSocketContext&&);
// Used in the SERVER mode only.
std::unique_ptr<net::SSLServerContext> server_context;
// Used in the CLIENT mode only.
std::unique_ptr<net::TransportSecurityState> transport_security_state;
std::unique_ptr<net::CertVerifier> cert_verifier;
std::unique_ptr<net::CTVerifier> ct_verifier;
std::unique_ptr<net::CTPolicyEnforcer> ct_policy_enforcer;
std::unique_ptr<net::SSLClientContext> client_context;
SslHmacChannelAuthenticator(const std::string& auth_key);
bool is_ssl_server();
void OnConnected(int result);
void WriteAuthenticationBytes(bool* callback_called);
void OnAuthBytesWritten(int result);
bool HandleAuthBytesWritten(int result, bool* callback_called);
void ReadAuthenticationBytes();
void OnAuthBytesRead(int result);
bool HandleAuthBytesRead(int result);
bool VerifyAuthBytes(const std::string& received_auth_bytes);
void CheckDone(bool* callback_called);
void NotifyError(int error);
// The mutual secret used for authentication.
std::string auth_key_;
// Used in the SERVER mode only.
std::string local_cert_;
scoped_refptr<RsaKeyPair> local_key_pair_;
// Used in the CLIENT mode only.
std::string remote_cert_;
SslSocketContext socket_context_;
std::unique_ptr<net::SSLSocket> socket_;
DoneCallback done_callback_;
scoped_refptr<net::DrainableIOBuffer> auth_write_buf_;
scoped_refptr<net::GrowableIOBuffer> auth_read_buf_;
} // namespace protocol
} // namespace remoting