/*

 * Dropbear - a SSH2 server

 * 

 * Copyright (c) 2002,2003 Matt Johnston

 * All rights reserved.

 * 

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 * 

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 * 

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE. */

#ifndef DROPBEAR_TCPFWD_H

#define DROPBEAR_TCPFWD_H

#include "channel.h"

#include "list.h"

#include "listener.h"

struct TCPListener {

  /* For a direct-tcpip request, it's the addr/port we want the other

   * end to connect to */

  char *sendaddr;

  unsigned int sendport;

  /* This is the address/port that we listen on. The address has special

   * meanings as per the rfc, "" for all interfaces, "localhost" for 

   * localhost, or a normal interface name. */

  char *listenaddr;

  unsigned int listenport;

  /* The address that the remote host asked to listen on */

  char *request_listenaddr;

  const struct ChanType *chantype;

  enum {direct, forwarded} tcp_type;

};

/* A forwarding entry */

struct TCPFwdEntry {

  const char *connectaddr;

  unsigned int connectport;

  const char *listenaddr;

  unsigned int listenport;

  unsigned int have_reply; /* is set to 1 after a reply has been received

                when setting up the forwarding */

};

/* Server */

void recv_msg_global_request_remotetcp(void);

extern const struct ChanType svr_chan_tcpdirect;

/* Client */

void setup_localtcp(void);

void setup_remotetcp(void);

extern const struct ChanType cli_chan_tcpremote;

void cli_recv_msg_request_success(void);

void cli_recv_msg_request_failure(void);

/* Common */

int listen_tcpfwd(struct TCPListener* tcpinfo, struct Listener **ret_listener);

/* A random identifier */

#define CHANNEL_ID_TCPFORWARDED 0x43612c67

#endif