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// Copyright (c) 2011 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.
#ifndef REMOTING_PROTOCOL_CHANNEL_AUTHENTICATOR_H_
#define REMOTING_PROTOCOL_CHANNEL_AUTHENTICATOR_H_
#include <string>
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "base/threading/non_thread_safe.h"
#include "net/base/completion_callback.h"
namespace net {
class DrainableIOBuffer;
class GrowableIOBuffer;
class SSLClientSocket;
class SSLServerSocket;
} // namespace net
namespace remoting {
namespace protocol {
class ChannelAuthenticator : public base::NonThreadSafe {
public:
enum Result {
SUCCESS,
FAILURE,
};
typedef base::Callback<void(Result)> DoneCallback;
ChannelAuthenticator() { }
virtual ~ChannelAuthenticator() { }
// Starts authentication of the |socket|. |done_callback| is called
// when authentication is finished. Caller retains ownership of
// |socket|. |shared_secret| is a shared secret that we use to
// authenticate the channel.
virtual void Authenticate(const std::string& shared_secret,
const DoneCallback& done_callback) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(ChannelAuthenticator);
};
class HostChannelAuthenticator : public ChannelAuthenticator {
public:
HostChannelAuthenticator(net::SSLServerSocket* socket);
virtual ~HostChannelAuthenticator();
// ChannelAuthenticator overrides.
virtual void Authenticate(const std::string& shared_secret,
const DoneCallback& done_callback) OVERRIDE;
private:
void DoAuthRead();
void OnAuthBytesRead(int result);
bool HandleAuthBytesRead(int result);
bool VerifyAuthBytes(const std::string& received_auth_bytes);
std::string auth_bytes_;
net::SSLServerSocket* socket_;
DoneCallback done_callback_;
scoped_refptr<net::GrowableIOBuffer> auth_read_buf_;
net::OldCompletionCallbackImpl<HostChannelAuthenticator> auth_read_callback_;
DISALLOW_COPY_AND_ASSIGN(HostChannelAuthenticator);
};
class ClientChannelAuthenticator : public ChannelAuthenticator {
public:
ClientChannelAuthenticator(net::SSLClientSocket* socket);
virtual ~ClientChannelAuthenticator();
// ChannelAuthenticator overrides.
virtual void Authenticate(const std::string& shared_secret,
const DoneCallback& done_callback);
private:
void DoAuthWrite();
void OnAuthBytesWritten(int result);
bool HandleAuthBytesWritten(int result);
net::SSLClientSocket* socket_;
DoneCallback done_callback_;
scoped_refptr<net::DrainableIOBuffer> auth_write_buf_;
net::OldCompletionCallbackImpl<ClientChannelAuthenticator> auth_write_callback_;
DISALLOW_COPY_AND_ASSIGN(ClientChannelAuthenticator);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_CHANNEL_AUTHENTICATOR_H_
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