ssh.h revision 106130 
1/*	$OpenBSD: ssh.h,v 1.71 2002/06/22 02:00:29 stevesk Exp $	*/
2/*	$FreeBSD: head/crypto/openssh/ssh.h 106130 2002-10-29 10:16:02Z des $	*/
3
4/*
5 * Author: Tatu Ylonen <ylo@cs.hut.fi>
6 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7 *                    All rights reserved
8 *
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose.  Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
14 */
15
16#ifndef SSH_H
17#define SSH_H
18
19#include <netinet/in.h> /* For struct sockaddr_in */
20#include <pwd.h> /* For struct pw */
21#include <stdarg.h> /* For va_list */
22#include <syslog.h> /* For LOG_AUTH and friends */
23#include <sys/socket.h> /* For struct sockaddr_storage */
24#include "openbsd-compat/fake-socket.h" /* For struct sockaddr_storage */
25#ifdef HAVE_SYS_SELECT_H
26# include <sys/select.h>
27#endif
28
29/* Cipher used for encrypting authentication files. */
30#define SSH_AUTHFILE_CIPHER	SSH_CIPHER_3DES
31
32/* Default port number. */
33#define SSH_DEFAULT_PORT	22
34
35/* Maximum number of TCP/IP ports forwarded per direction. */
36#define SSH_MAX_FORWARDS_PER_DIRECTION	100
37
38/*
39 * Maximum number of RSA authentication identity files that can be specified
40 * in configuration files or on the command line.
41 */
42#define SSH_MAX_IDENTITY_FILES		100
43
44/*
45 * Major protocol version.  Different version indicates major incompatibility
46 * that prevents communication.
47 *
48 * Minor protocol version.  Different version indicates minor incompatibility
49 * that does not prevent interoperation.
50 */
51#define PROTOCOL_MAJOR_1	1
52#define PROTOCOL_MINOR_1	5
53
54/* We support both SSH1 and SSH2 */
55#define PROTOCOL_MAJOR_2	2
56#define PROTOCOL_MINOR_2	0
57
58/*
59 * Name for the service.  The port named by this service overrides the
60 * default port if present.
61 */
62#define SSH_SERVICE_NAME	"ssh"
63
64/*
65 * Name of the environment variable containing the process ID of the
66 * authentication agent.
67 */
68#define SSH_AGENTPID_ENV_NAME	"SSH_AGENT_PID"
69
70/*
71 * Name of the environment variable containing the pathname of the
72 * authentication socket.
73 */
74#define SSH_AUTHSOCKET_ENV_NAME "SSH_AUTH_SOCK"
75
76/*
77 * Environment variable for overwriting the default location of askpass
78 */
79#define SSH_ASKPASS_ENV		"SSH_ASKPASS"
80
81/*
82 * Force host key length and server key length to differ by at least this
83 * many bits.  This is to make double encryption with rsaref work.
84 */
85#define SSH_KEY_BITS_RESERVED		128
86
87/*
88 * Length of the session key in bytes.  (Specified as 256 bits in the
89 * protocol.)
90 */
91#define SSH_SESSION_KEY_LENGTH		32
92
93/* Name of Kerberos service for SSH to use. */
94#define KRB4_SERVICE_NAME		"rcmd"
95
96/* Used to identify ``EscapeChar none'' */
97#define SSH_ESCAPECHAR_NONE		-2
98
99/*
100 * unprivileged user when UsePrivilegeSeparation=yes;
101 * sshd will change its privileges to this user and its
102 * primary group.
103 */
104#ifndef SSH_PRIVSEP_USER
105#define SSH_PRIVSEP_USER		"sshd"
106#endif
107
108/* Minimum modulus size (n) for RSA keys. */
109#define SSH_RSA_MINIMUM_MODULUS_SIZE	768
110
111#endif				/* SSH_H */
112