xref: /openssh-portable/session.h (revision cd98925c)
1 /* $OpenBSD: session.h,v 1.36 2018/10/02 12:40:07 djm Exp $ */
2 
3 /*
4  * Copyright (c) 2000, 2001 Markus Friedl.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 #ifndef SESSION_H
27 #define SESSION_H
28 
29 #define TTYSZ 64
30 typedef struct Session Session;
31 struct Session {
32 	int	used;
33 	int	self;
34 	int	next_unused;
35 	struct passwd *pw;
36 	Authctxt *authctxt;
37 	pid_t	pid;
38 	int	forced;
39 
40 	/* tty */
41 	char	*term;
42 	int	ptyfd, ttyfd, ptymaster;
43 	u_int	row, col, xpixel, ypixel;
44 	char	tty[TTYSZ];
45 
46 	/* X11 */
47 	u_int	display_number;
48 	char	*display;
49 	u_int	screen;
50 	char	*auth_display;
51 	char	*auth_proto;
52 	char	*auth_data;
53 	int	single_connection;
54 
55 	int	chanid;
56 	int	*x11_chanids;
57 	int	is_subsystem;
58 	char	*subsys;
59 	u_int	num_env;
60 	struct {
61 		char	*name;
62 		char	*val;
63 	} *env;
64 };
65 
66 void	 do_authenticated(struct ssh *, Authctxt *);
67 void	 do_cleanup(struct ssh *, Authctxt *);
68 
69 int	 session_open(Authctxt *, int);
70 void	 session_unused(int);
71 int	 session_input_channel_req(struct ssh *, Channel *, const char *);
72 void	 session_close_by_pid(struct ssh *ssh, pid_t, int);
73 void	 session_close_by_channel(struct ssh *, int, void *);
74 void	 session_destroy_all(struct ssh *, void (*)(Session *));
75 void	 session_pty_cleanup2(Session *);
76 
77 Session	*session_new(void);
78 Session	*session_by_tty(char *);
79 void	 session_close(struct ssh *, Session *);
80 void	 do_setusercontext(struct passwd *);
81 
82 const char	*session_get_remote_name_or_ip(struct ssh *, u_int, int);
83 
84 #endif
85