blob: ae83aa8cf4278d94b81589bbc845a9c11496b2b3 [file] [log] [blame]
markus@openbsd.org8d057842016-09-30 09:19:13 +00001/* $OpenBSD: clientloop.h,v 1.33 2016/09/30 09:19:13 markus Exp $ */
Ben Lindstrom36579d32001-01-29 07:39:26 +00002
Ben Lindstrombf555ba2001-01-18 02:04:35 +00003/*
Ben Lindstrom226cfa02001-01-22 05:34:40 +00004 * Author: Tatu Ylonen <ylo@cs.hut.fi>
5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
6 * All rights reserved
7 *
8 * As far as I am concerned, the code I have written for this software
9 * can be used freely for any purpose. Any derived versions of this
10 * software must be clearly marked as such, and if the derived work is
11 * incompatible with the protocol description in the RFC file, it must be
12 * called by a name other than "ssh" or "Secure Shell".
13 */
14/*
Ben Lindstrombf555ba2001-01-18 02:04:35 +000015 * Copyright (c) 2001 Markus Friedl. All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
27 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
28 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
29 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
31 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
Ben Lindstrom226cfa02001-01-22 05:34:40 +000037
Damien Miller99bd21e2006-03-15 11:11:28 +110038#include <termios.h>
39
Ben Lindstrom226cfa02001-01-22 05:34:40 +000040/* Client side main loop for the interactive session. */
Ben Lindstrom4cc240d2001-07-04 04:46:56 +000041int client_loop(int, int, int);
djm@openbsd.orged4ce822016-01-13 23:04:47 +000042int client_x11_get_proto(const char *, const char *, u_int, u_int,
Damien Miller17e7ed02005-06-17 12:54:33 +100043 char **, char **);
Damien Miller509b0102003-12-17 16:33:10 +110044void client_global_request_reply_fwd(int, u_int32_t, void *);
Darren Tuckerfc959702004-07-17 16:12:08 +100045void client_session2_setup(int, int, int, const char *, struct termios *,
Damien Miller5771ed72008-05-19 15:35:33 +100046 int, Buffer *, char **);
Damien Millerb3ce9fe2007-08-08 14:32:41 +100047int client_request_tun_fwd(int, int, int);
Damien Miller6c3eec72011-05-05 14:16:22 +100048void client_stop_mux(void);
Darren Tucker7ebfc102004-11-07 20:06:19 +110049
Darren Tucker2fb66ca2008-06-13 04:49:33 +100050/* Escape filter for protocol 2 sessions */
51void *client_new_escape_filter_ctx(int);
Darren Tucker84c56f52008-06-13 04:55:46 +100052void client_filter_cleanup(int, void *);
Darren Tucker2fb66ca2008-06-13 04:49:33 +100053int client_simple_escape_filter(Channel *, char *, int);
54
Darren Tucker9f407c42008-06-13 04:50:27 +100055/* Global request confirmation callbacks */
56typedef void global_confirm_cb(int, u_int32_t seq, void *);
57void client_register_global_confirm(global_confirm_cb *, void *);
58
Damien Miller6d7b4372011-06-23 08:31:57 +100059/* Channel request confirmation callbacks */
60enum confirm_action { CONFIRM_WARN = 0, CONFIRM_CLOSE, CONFIRM_TTY };
61void client_expect_confirm(int, const char *, enum confirm_action);
62
Damien Miller13390022005-07-06 09:44:19 +100063/* Multiplexing protocol version */
Damien Millere1537f92010-01-26 13:26:22 +110064#define SSHMUX_VER 4
Damien Miller13390022005-07-06 09:44:19 +100065
Darren Tucker7ebfc102004-11-07 20:06:19 +110066/* Multiplexing control protocol flags */
67#define SSHMUX_COMMAND_OPEN 1 /* Open new connection */
68#define SSHMUX_COMMAND_ALIVE_CHECK 2 /* Check master is alive */
69#define SSHMUX_COMMAND_TERMINATE 3 /* Ask master to exit */
Damien Millere1537f92010-01-26 13:26:22 +110070#define SSHMUX_COMMAND_STDIO_FWD 4 /* Open stdio fwd (ssh -W) */
Damien Miller388f6fc2010-05-21 14:57:35 +100071#define SSHMUX_COMMAND_FORWARD 5 /* Forward only, no command */
Damien Miller6c3eec72011-05-05 14:16:22 +100072#define SSHMUX_COMMAND_STOP 6 /* Disable mux but not conn */
Damien Millerf6dff7c2011-09-22 21:38:52 +100073#define SSHMUX_COMMAND_CANCEL_FWD 7 /* Cancel forwarding(s) */
markus@openbsd.org8d057842016-09-30 09:19:13 +000074#define SSHMUX_COMMAND_PROXY 8 /* Open new connection */
Damien Millerb1cbfa22008-05-19 16:00:08 +100075
Damien Millerb1cbfa22008-05-19 16:00:08 +100076void muxserver_listen(void);
markus@openbsd.org8d057842016-09-30 09:19:13 +000077int muxclient(const char *);
Damien Millere1537f92010-01-26 13:26:22 +110078void mux_exit_message(Channel *, int);
Damien Miller555f3b82011-05-15 08:48:05 +100079void mux_tty_alloc_failed(Channel *);
80