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markus@openbsd.orgcecee2d2018-07-09 21:03:30 +00001/* $OpenBSD: clientloop.h,v 1.36 2018/07/09 21:03:30 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
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000040struct ssh;
41
Ben Lindstrom226cfa02001-01-22 05:34:40 +000042/* Client side main loop for the interactive session. */
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000043int client_loop(struct ssh *, int, int, int);
44int client_x11_get_proto(struct ssh *, const char *, const char *,
45 u_int, u_int, char **, char **);
Damien Miller509b0102003-12-17 16:33:10 +110046void client_global_request_reply_fwd(int, u_int32_t, void *);
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000047void client_session2_setup(struct ssh *, int, int, int,
markus@openbsd.orgcecee2d2018-07-09 21:03:30 +000048 const char *, struct termios *, int, struct sshbuf *, char **);
djm@openbsd.orgb7548b12017-10-23 05:08:00 +000049char *client_request_tun_fwd(struct ssh *, int, int, int);
Damien Miller6c3eec72011-05-05 14:16:22 +100050void client_stop_mux(void);
Darren Tucker7ebfc102004-11-07 20:06:19 +110051
Darren Tucker2fb66ca2008-06-13 04:49:33 +100052/* Escape filter for protocol 2 sessions */
53void *client_new_escape_filter_ctx(int);
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000054void client_filter_cleanup(struct ssh *, int, void *);
55int client_simple_escape_filter(struct ssh *, Channel *, char *, int);
Darren Tucker2fb66ca2008-06-13 04:49:33 +100056
Darren Tucker9f407c42008-06-13 04:50:27 +100057/* Global request confirmation callbacks */
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000058typedef void global_confirm_cb(struct ssh *, int, u_int32_t, void *);
Darren Tucker9f407c42008-06-13 04:50:27 +100059void client_register_global_confirm(global_confirm_cb *, void *);
60
Damien Miller6d7b4372011-06-23 08:31:57 +100061/* Channel request confirmation callbacks */
62enum confirm_action { CONFIRM_WARN = 0, CONFIRM_CLOSE, CONFIRM_TTY };
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000063void client_expect_confirm(struct ssh *, int, const char *,
64 enum confirm_action);
Damien Miller6d7b4372011-06-23 08:31:57 +100065
Damien Miller13390022005-07-06 09:44:19 +100066/* Multiplexing protocol version */
Damien Millere1537f92010-01-26 13:26:22 +110067#define SSHMUX_VER 4
Damien Miller13390022005-07-06 09:44:19 +100068
Darren Tucker7ebfc102004-11-07 20:06:19 +110069/* Multiplexing control protocol flags */
70#define SSHMUX_COMMAND_OPEN 1 /* Open new connection */
71#define SSHMUX_COMMAND_ALIVE_CHECK 2 /* Check master is alive */
72#define SSHMUX_COMMAND_TERMINATE 3 /* Ask master to exit */
Damien Millere1537f92010-01-26 13:26:22 +110073#define SSHMUX_COMMAND_STDIO_FWD 4 /* Open stdio fwd (ssh -W) */
Damien Miller388f6fc2010-05-21 14:57:35 +100074#define SSHMUX_COMMAND_FORWARD 5 /* Forward only, no command */
Damien Miller6c3eec72011-05-05 14:16:22 +100075#define SSHMUX_COMMAND_STOP 6 /* Disable mux but not conn */
Damien Millerf6dff7c2011-09-22 21:38:52 +100076#define SSHMUX_COMMAND_CANCEL_FWD 7 /* Cancel forwarding(s) */
markus@openbsd.org8d057842016-09-30 09:19:13 +000077#define SSHMUX_COMMAND_PROXY 8 /* Open new connection */
Damien Millerb1cbfa22008-05-19 16:00:08 +100078
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000079void muxserver_listen(struct ssh *);
markus@openbsd.org8d057842016-09-30 09:19:13 +000080int muxclient(const char *);
djm@openbsd.orgdbee4112017-09-12 06:32:07 +000081void mux_exit_message(struct ssh *, Channel *, int);
82void mux_tty_alloc_failed(struct ssh *ssh, Channel *);
Damien Miller555f3b82011-05-15 08:48:05 +100083