servconf.h revision 137019 
1/*	$OpenBSD: servconf.h,v 1.70 2004/06/24 19:30:54 djm Exp $	*/
2/*	$FreeBSD: head/crypto/openssh/servconf.h 137019 2004-10-28 16:11:31Z 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 * Definitions for server configuration data and for the functions reading it.
9 *
10 * As far as I am concerned, the code I have written for this software
11 * can be used freely for any purpose.  Any derived versions of this
12 * software must be clearly marked as such, and if the derived work is
13 * incompatible with the protocol description in the RFC file, it must be
14 * called by a name other than "ssh" or "Secure Shell".
15 */
16
17#ifndef SERVCONF_H
18#define SERVCONF_H
19
20#include "buffer.h"
21
22#define MAX_PORTS		256	/* Max # ports. */
23
24#define MAX_ALLOW_USERS		256	/* Max # users on allow list. */
25#define MAX_DENY_USERS		256	/* Max # users on deny list. */
26#define MAX_ALLOW_GROUPS	256	/* Max # groups on allow list. */
27#define MAX_DENY_GROUPS		256	/* Max # groups on deny list. */
28#define MAX_SUBSYSTEMS		256	/* Max # subsystems. */
29#define MAX_HOSTKEYS		256	/* Max # hostkeys. */
30#define MAX_ACCEPT_ENV		256	/* Max # of env vars. */
31
32/* permit_root_login */
33#define	PERMIT_NOT_SET		-1
34#define	PERMIT_NO		0
35#define	PERMIT_FORCED_ONLY	1
36#define	PERMIT_NO_PASSWD	2
37#define	PERMIT_YES		3
38
39#define DEFAULT_AUTH_FAIL_MAX	6	/* Default for MaxAuthTries */
40
41typedef struct {
42	u_int num_ports;
43	u_int ports_from_cmdline;
44	u_short ports[MAX_PORTS];	/* Port number to listen on. */
45	char   *listen_addr;		/* Address on which the server listens. */
46	struct addrinfo *listen_addrs;	/* Addresses on which the server listens. */
47	char   *host_key_files[MAX_HOSTKEYS];	/* Files containing host keys. */
48	int     num_host_key_files;     /* Number of files for host keys. */
49	char   *pid_file;	/* Where to put our pid */
50	int     server_key_bits;/* Size of the server key. */
51	int     login_grace_time;	/* Disconnect if no auth in this time
52					 * (sec). */
53	int     key_regeneration_time;	/* Server key lifetime (seconds). */
54	int     permit_root_login;	/* PERMIT_*, see above */
55	int     ignore_rhosts;	/* Ignore .rhosts and .shosts. */
56	int     ignore_user_known_hosts;	/* Ignore ~/.ssh/known_hosts
57						 * for RhostsRsaAuth */
58	int     print_motd;	/* If true, print /etc/motd. */
59	int	print_lastlog;	/* If true, print lastlog */
60	int     x11_forwarding;	/* If true, permit inet (spoofing) X11 fwd. */
61	int     x11_display_offset;	/* What DISPLAY number to start
62					 * searching at */
63	int     x11_use_localhost;	/* If true, use localhost for fake X11 server. */
64	char   *xauth_location;	/* Location of xauth program */
65	int     strict_modes;	/* If true, require string home dir modes. */
66	int     tcp_keep_alive;	/* If true, set SO_KEEPALIVE. */
67	char   *ciphers;	/* Supported SSH2 ciphers. */
68	char   *macs;		/* Supported SSH2 macs. */
69	int	protocol;	/* Supported protocol versions. */
70	int     gateway_ports;	/* If true, allow remote connects to forwarded ports. */
71	SyslogFacility log_facility;	/* Facility for system logging. */
72	LogLevel log_level;	/* Level for system logging. */
73	int     rhosts_rsa_authentication;	/* If true, permit rhosts RSA
74						 * authentication. */
75	int     hostbased_authentication;	/* If true, permit ssh2 hostbased auth */
76	int     hostbased_uses_name_from_packet_only; /* experimental */
77	int     rsa_authentication;	/* If true, permit RSA authentication. */
78	int     pubkey_authentication;	/* If true, permit ssh2 pubkey authentication. */
79	int     kerberos_authentication;	/* If true, permit Kerberos
80						 * authentication. */
81	int     kerberos_or_local_passwd;	/* If true, permit kerberos
82						 * and any other password
83						 * authentication mechanism,
84						 * such as SecurID or
85						 * /etc/passwd */
86	int     kerberos_ticket_cleanup;	/* If true, destroy ticket
87						 * file on logout. */
88	int     kerberos_get_afs_token;		/* If true, try to get AFS token if
89						 * authenticated with Kerberos. */
90	int     gss_authentication;	/* If true, permit GSSAPI authentication */
91	int     gss_cleanup_creds;	/* If true, destroy cred cache on logout */
92	int     password_authentication;	/* If true, permit password
93						 * authentication. */
94	int     kbd_interactive_authentication;	/* If true, permit */
95	int     challenge_response_authentication;
96	int     permit_empty_passwd;	/* If false, do not permit empty
97					 * passwords. */
98	int     permit_user_env;	/* If true, read ~/.ssh/environment */
99	int     use_login;	/* If true, login(1) is used */
100	int     compression;	/* If true, compression is allowed */
101	int	allow_tcp_forwarding;
102	u_int num_allow_users;
103	char   *allow_users[MAX_ALLOW_USERS];
104	u_int num_deny_users;
105	char   *deny_users[MAX_DENY_USERS];
106	u_int num_allow_groups;
107	char   *allow_groups[MAX_ALLOW_GROUPS];
108	u_int num_deny_groups;
109	char   *deny_groups[MAX_DENY_GROUPS];
110
111	u_int num_subsystems;
112	char   *subsystem_name[MAX_SUBSYSTEMS];
113	char   *subsystem_command[MAX_SUBSYSTEMS];
114
115	u_int num_accept_env;
116	char   *accept_env[MAX_ACCEPT_ENV];
117
118	int	max_startups_begin;
119	int	max_startups_rate;
120	int	max_startups;
121	int	max_authtries;
122	char   *banner;			/* SSH-2 banner message */
123	int	use_dns;
124	int	client_alive_interval;	/*
125					 * poke the client this often to
126					 * see if it's still there
127					 */
128	int	client_alive_count_max;	/*
129					 * If the client is unresponsive
130					 * for this many intervals above,
131					 * disconnect the session
132					 */
133
134	char   *authorized_keys_file;	/* File containing public keys */
135	char   *authorized_keys_file2;
136	int	use_pam;		/* Enable auth via PAM */
137}       ServerOptions;
138
139void	 initialize_server_options(ServerOptions *);
140void	 fill_default_server_options(ServerOptions *);
141int	 process_server_config_line(ServerOptions *, char *, const char *, int);
142void	 load_server_config(const char *, Buffer *);
143void	 parse_server_config(ServerOptions *, const char *, Buffer *);
144
145#endif				/* SERVCONF_H */
146