servconf.h revision 76262 
1/*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 *                    All rights reserved
5 * Definitions for server configuration data and for the functions reading it.
6 *
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose.  Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
12 */
13
14/* RCSID("$OpenBSD: servconf.h,v 1.41 2001/04/13 22:46:53 beck Exp $"); */
15/* RCSID("$FreeBSD: head/crypto/openssh/servconf.h 76262 2001-05-04 04:14:23Z green $"); */
16
17#ifndef SERVCONF_H
18#define SERVCONF_H
19
20#define MAX_PORTS		256	/* Max # ports. */
21
22#define MAX_ALLOW_USERS		256	/* Max # users on allow list. */
23#define MAX_DENY_USERS		256	/* Max # users on deny list. */
24#define MAX_ALLOW_GROUPS	256	/* Max # groups on allow list. */
25#define MAX_DENY_GROUPS		256	/* Max # groups on deny list. */
26#define MAX_SUBSYSTEMS		256	/* Max # subsystems. */
27#define MAX_HOSTKEYS		256	/* Max # hostkeys. */
28
29/* permit_root_login */
30#define	PERMIT_NOT_SET		-1
31#define	PERMIT_NO		0
32#define	PERMIT_FORCED_ONLY	1
33#define	PERMIT_NO_PASSWD	2
34#define	PERMIT_YES		3
35
36
37typedef struct {
38	u_int num_ports;
39	u_int ports_from_cmdline;
40	u_short ports[MAX_PORTS];	/* Port number to listen on. */
41	char   *listen_addr;		/* Address on which the server listens. */
42	struct addrinfo *listen_addrs;	/* Addresses on which the server listens. */
43	char   *host_key_files[MAX_HOSTKEYS];	/* Files containing host keys. */
44	int     num_host_key_files;     /* Number of files for host keys. */
45	char   *pid_file;	/* Where to put our pid */
46	int     server_key_bits;/* Size of the server key. */
47	int     login_grace_time;	/* Disconnect if no auth in this time
48					 * (sec). */
49	int     key_regeneration_time;	/* Server key lifetime (seconds). */
50	int     permit_root_login;	/* PERMIT_*, see above */
51	int     ignore_rhosts;	/* Ignore .rhosts and .shosts. */
52	int     ignore_user_known_hosts;	/* Ignore ~/.ssh/known_hosts
53						 * for RhostsRsaAuth */
54	int     print_motd;	/* If true, print /etc/motd. */
55	int	print_lastlog;	/* If true, print lastlog */
56	int     check_mail;	/* If true, check for new mail. */
57	int     x11_forwarding;	/* If true, permit inet (spoofing) X11 fwd. */
58	int     x11_display_offset;	/* What DISPLAY number to start
59					 * searching at */
60	char   *xauth_location;	/* Location of xauth program */
61	int     strict_modes;	/* If true, require string home dir modes. */
62	int     keepalives;	/* If true, set SO_KEEPALIVE. */
63	char   *ciphers;	/* Supported SSH2 ciphers. */
64	char   *macs;		/* Supported SSH2 macs. */
65	int	protocol;	/* Supported protocol versions. */
66	int     gateway_ports;	/* If true, allow remote connects to forwarded ports. */
67	SyslogFacility log_facility;	/* Facility for system logging. */
68	LogLevel log_level;	/* Level for system logging. */
69	int     rhosts_authentication;	/* If true, permit rhosts
70					 * authentication. */
71	int     rhosts_rsa_authentication;	/* If true, permit rhosts RSA
72						 * authentication. */
73	int     hostbased_authentication;	/* If true, permit ssh2 hostbased auth */
74	int     hostbased_uses_name_from_packet_only; /* experimental */
75	int     rsa_authentication;	/* If true, permit RSA authentication. */
76#if defined(KRB4) || defined(KRB5)
77	int     kerberos_authentication; /* If true, permit Kerberos auth. */
78#endif /* KRB4 || KRB5 */
79	int     pubkey_authentication;	/* If true, permit ssh2 pubkey authentication. */
80#ifdef KRB4
81	int     krb4_or_local_passwd;		/* If true, permit kerberos v4
82						 * and any other password
83						 * authentication mechanism,
84						 * such as SecurID or
85						 * /etc/passwd */
86	int     krb4_ticket_cleanup;		/* If true, destroy ticket
87						 * file on logout. */
88#endif
89#ifdef KRB5
90	int     krb5_tgt_passing;
91
92#endif /* KRB5 */
93#ifdef AFS
94	int     krb4_tgt_passing;	/* If true, permit Kerberos v4 tgt
95					 * passing. */
96	int     afs_token_passing;	/* If true, permit AFS token passing. */
97#endif
98	int     password_authentication;	/* If true, permit password
99						 * authentication. */
100	int     kbd_interactive_authentication;	/* If true, permit */
101	int     challenge_reponse_authentication;
102	int     permit_empty_passwd;	/* If false, do not permit empty
103					 * passwords. */
104	int     use_login;	/* If true, login(1) is used */
105	int	allow_tcp_forwarding;
106	u_int num_allow_users;
107	char   *allow_users[MAX_ALLOW_USERS];
108	u_int num_deny_users;
109	char   *deny_users[MAX_DENY_USERS];
110	u_int num_allow_groups;
111	char   *allow_groups[MAX_ALLOW_GROUPS];
112	u_int num_deny_groups;
113	char   *deny_groups[MAX_DENY_GROUPS];
114	unsigned int connections_per_period;	/*
115						 * If not 0, number of sshd
116						 * connections accepted per
117						 * connections_period.
118						 */
119	unsigned int connections_period;
120
121	u_int num_subsystems;
122	char   *subsystem_name[MAX_SUBSYSTEMS];
123	char   *subsystem_command[MAX_SUBSYSTEMS];
124
125	int	max_startups_begin;
126	int	max_startups_rate;
127	int	max_startups;
128	char   *banner;			/* SSH-2 banner message */
129	int	reverse_mapping_check;	/* cross-check ip and dns */
130	int	client_alive_interval;	/*
131					 * poke the client this often to
132					 * see if it's still there
133					 */
134	int	client_alive_count_max;	/*
135					 *If the client is unresponsive
136					 * for this many intervals, above
137					 * diconnect the session
138					 */
139
140}       ServerOptions;
141/*
142 * Initializes the server options to special values that indicate that they
143 * have not yet been set.
144 */
145void    initialize_server_options(ServerOptions * options);
146
147/*
148 * Reads the server configuration file.  This only sets the values for those
149 * options that have the special value indicating they have not been set.
150 */
151void    read_server_config(ServerOptions * options, const char *filename);
152
153/* Sets values for those values that have not yet been set. */
154void    fill_default_server_options(ServerOptions * options);
155
156#endif				/* SERVCONF_H */
157