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session.h
1 /* $OpenBSD: session.h,v 1.37 2023/01/06 02:39:59 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  /* exec */
66 #ifdef SSH_AUDIT_EVENTS
67  int command_handle;
68  char *command;
69 #endif
70 };
71 
72 void do_authenticated(struct ssh *, Authctxt *);
73 void do_cleanup(struct ssh *, Authctxt *);
74 
75 int session_open(Authctxt *, int);
76 void session_unused(int);
77 int session_input_channel_req(struct ssh *, Channel *, const char *);
78 void session_close_by_pid(struct ssh *ssh, pid_t, int);
79 void session_close_by_channel(struct ssh *, int, int, void *);
80 void session_destroy_all(struct ssh *, void (*)(struct ssh*, Session *));
81 void session_pty_cleanup2(Session *);
82 void session_end_command2(struct ssh *ssh, Session *);
83 
84 Session *session_new(void);
85 Session *session_by_id(int);
86 Session *session_by_tty(char *);
87 void session_close(struct ssh *, Session *);
88 void do_setusercontext(struct passwd *);
89 
90 const char *session_get_remote_name_or_ip(struct ssh *, u_int, int);
91 
92 #endif