Grid Community Toolkit  6.2.1567772254 (tag: v6.2.20190906)
clientloop.h
1 /* $OpenBSD: clientloop.h,v 1.33 2016/09/30 09:19:13 markus Exp $ */
2 
3 /*
4  * Author: Tatu Ylonen <[email protected]>
5  * Copyright (c) 1995 Tatu Ylonen <[email protected]>, 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 /*
15  * 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  */
37 
38 #include <termios.h>
39 
40 /* Client side main loop for the interactive session. */
41 int client_loop(int, int, int);
42 int client_x11_get_proto(const char *, const char *, u_int, u_int,
43  char **, char **);
44 void client_global_request_reply_fwd(int, u_int32_t, void *);
45 void client_session2_setup(int, int, int, const char *, struct termios *,
46  int, Buffer *, char **);
47 int client_request_tun_fwd(int, int, int);
48 void client_stop_mux(void);
49 
50 /* Escape filter for protocol 2 sessions */
51 void *client_new_escape_filter_ctx(int);
52 void client_filter_cleanup(int, void *);
53 int client_simple_escape_filter(Channel *, char *, int);
54 
55 /* Global request confirmation callbacks */
56 typedef void global_confirm_cb(int, u_int32_t seq, void *);
57 void client_register_global_confirm(global_confirm_cb *, void *);
58 
59 /* Channel request confirmation callbacks */
60 enum confirm_action { CONFIRM_WARN = 0, CONFIRM_CLOSE, CONFIRM_TTY };
61 void client_expect_confirm(int, const char *, enum confirm_action);
62 
63 /* Multiplexing protocol version */
64 #define SSHMUX_VER 4
65 
66 /* 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 */
70 #define SSHMUX_COMMAND_STDIO_FWD 4 /* Open stdio fwd (ssh -W) */
71 #define SSHMUX_COMMAND_FORWARD 5 /* Forward only, no command */
72 #define SSHMUX_COMMAND_STOP 6 /* Disable mux but not conn */
73 #define SSHMUX_COMMAND_CANCEL_FWD 7 /* Cancel forwarding(s) */
74 #define SSHMUX_COMMAND_PROXY 8 /* Open new connection */
75 
76 void muxserver_listen(void);
77 int muxclient(const char *);
78 void mux_exit_message(Channel *, int);
79 void mux_tty_alloc_failed(Channel *);
80 
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