/* Send/receive data-connection addresses

   Copyright (C) 1997, 1998 Free Software Foundation, Inc.

   Written by Miles Bader <miles@gnu.ai.mit.edu>

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */

#include <unistd.h>
#include <errno.h>
#include <netinet/in.h>

#include <ftpconn.h>
#include "priv.h"

error_t
ftp_conn_get_pasv_addr (struct ftp_conn *conn, struct sockaddr **addr)
{
  int reply;
  const char *txt;
  error_t err = ftp_conn_cmd_reopen (conn, "pasv", 0, &reply, &txt);

  if (! err)
    {
      if (reply == REPLY_PASV_OK)
	err = (*(conn->syshooks.pasv_addr ?: ftp_conn_unix_pasv_addr))
	  (conn, txt, addr);
      else
	err = unexpected_reply (conn, reply, txt, 0);
    }

  return err;
}

error_t
ftp_conn_send_actv_addr (struct ftp_conn *conn, struct sockaddr *addr)
{
  error_t err;

  if (addr == 0)
    err = EINVAL;
  else if (addr->sa_family != AF_INET)
    err = EAFNOSUPPORT;
  else
    {
      char buf[50];
      int reply;
      unsigned char *a =
	(unsigned char *)&((struct sockaddr_in *)addr)->sin_addr.s_addr;
      unsigned char *p =
	(unsigned char *)&((struct sockaddr_in *)addr)->sin_port;

      snprintf (buf, sizeof buf, "%d,%d,%d,%d,%d,%d",
		a[0], a[1], a[2], a[3], p[0], p[1]);
      err = ftp_conn_cmd_reopen (conn, "port", buf, &reply, 0);

      if (! err)
	{
	  if (reply == REPLY_OK)
	    err = 0;
	  else
	    err = unexpected_reply (conn, reply, 0, 0);
	}
    }

  return err;
}