libexec/ftp-proxy/util.h

   1 /*      $OpenBSD: util.h,v 1.3 2002/05/23 10:22:14 deraadt Exp $ */
   2 /*      $DragonFly: src/libexec/ftp-proxy/util.h,v 1.2 2005/02/24 16:38:09 joerg Exp $ */
   3
   4 /*
   5  * Copyright (c) 1996-2001
   6  *      Obtuse Systems Corporation.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 4. Neither the name of the Obtuse Systems nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL OBTUSE SYSTEMS CORPORATION OR
  24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  27  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  30  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 struct proxy_channel {
  34         int pc_to_fd, pc_from_fd;
  35         int pc_alive;
  36         int pc_nextbyte;
  37         int pc_flags;
  38         int pc_length;
  39         int pc_size;
  40         struct sockaddr_in pc_from_sa, pc_to_sa;
  41         int (*pc_filter)( void ** databuf, int datalen);
  42         char *pc_buffer;
  43 };
  44
  45 struct csiob {
  46         int fd;
  47         int line_buffer_size, io_buffer_size, io_buffer_len, next_byte;
  48         unsigned char *io_buffer, *line_buffer;
  49         struct sockaddr_in sa, real_sa;
  50         const char *who;
  51         char alive, got_eof, data_available;
  52         int send_oob_flags;
  53 };
  54
  55 extern int telnet_getline(struct csiob *iobp,
  56     struct csiob *telnet_passthrough);
  57
  58 extern int get_proxy_env(int fd, struct sockaddr_in *server_sa_ptr,
  59     struct sockaddr_in *client_sa_ptr, struct sockaddr_in *proxy_sa_ptr);
  60
  61 extern int get_backchannel_socket(int type, int min_port, int max_port,
  62     int start_port, int direction, struct sockaddr_in *sap);
  63
  64 extern int xfer_data(const char *what_read, int from_fd, int to_fd,
  65     struct in_addr from, struct in_addr to);
  66
  67 extern char *ProgName;
  68
  69