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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_SERVER_SOCKET_ADAPTERS_H_
#define RTC_BASE_SERVER_SOCKET_ADAPTERS_H_
#include "rtc_base/socket_adapters.h"
namespace rtc {
// Interface for implementing proxy server sockets.
class AsyncProxyServerSocket : public BufferedReadAdapter {
public:
AsyncProxyServerSocket(Socket* socket, size_t buffer_size);
~AsyncProxyServerSocket() override;
sigslot::signal2<AsyncProxyServerSocket*, const SocketAddress&>
SignalConnectRequest;
virtual void SendConnectResult(int err, const SocketAddress& addr) = 0;
};
// Implements a socket adapter that performs the server side of a
// fake SSL handshake. Used when implementing a relay server that does "ssltcp".
class AsyncSSLServerSocket : public BufferedReadAdapter {
public:
explicit AsyncSSLServerSocket(Socket* socket);
AsyncSSLServerSocket(const AsyncSSLServerSocket&) = delete;
AsyncSSLServerSocket& operator=(const AsyncSSLServerSocket&) = delete;
protected:
void ProcessInput(char* data, size_t* len) override;
};
// Implements a proxy server socket for the SOCKS protocol.
class AsyncSocksProxyServerSocket : public AsyncProxyServerSocket {
public:
explicit AsyncSocksProxyServerSocket(Socket* socket);
AsyncSocksProxyServerSocket(const AsyncSocksProxyServerSocket&) = delete;
AsyncSocksProxyServerSocket& operator=(const AsyncSocksProxyServerSocket&) =
delete;
private:
void ProcessInput(char* data, size_t* len) override;
void DirectSend(const ByteBufferWriter& buf);
void HandleHello(ByteBufferReader* request);
void SendHelloReply(uint8_t method);
void HandleAuth(ByteBufferReader* request);
void SendAuthReply(uint8_t result);
void HandleConnect(ByteBufferReader* request);
void SendConnectResult(int result, const SocketAddress& addr) override;
void Error(int error);
static const int kBufferSize = 1024;
enum State {
SS_HELLO,
SS_AUTH,
SS_CONNECT,
SS_CONNECT_PENDING,
SS_TUNNEL,
SS_ERROR
};
State state_;
};
} // namespace rtc
#endif // RTC_BASE_SERVER_SOCKET_ADAPTERS_H_
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