servconf.h revision 1.1.1.2 
1/*	$NetBSD: servconf.h,v 1.1.1.2 2010/11/21 17:05:55 adam Exp $	*/
2/* $OpenBSD: servconf.h,v 1.93 2010/05/07 11:30:30 djm Exp $ */
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#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#define MAX_HOSTCERTS		256	/* Max # host certificates. */
29#define MAX_ACCEPT_ENV		256	/* Max # of env vars. */
30#define MAX_MATCH_GROUPS	256	/* Max # of groups for Match. */
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#define DEFAULT_SESSIONS_MAX	10	/* Default for MaxSessions */
41
42/* Magic name for internal sftp-server */
43#define INTERNAL_SFTP_NAME	"internal-sftp"
44
45typedef struct {
46	u_int	num_ports;
47	u_int	ports_from_cmdline;
48	int	ports[MAX_PORTS];	/* Port number to listen on. */
49	char   *listen_addr;		/* Address on which the server listens. */
50	struct addrinfo *listen_addrs;	/* Addresses on which the server listens. */
51	int     address_family;		/* Address family used by the server. */
52	char   *host_key_files[MAX_HOSTKEYS];	/* Files containing host keys. */
53	int     num_host_key_files;     /* Number of files for host keys. */
54	char   *host_cert_files[MAX_HOSTCERTS];	/* Files containing host certs. */
55	int     num_host_cert_files;     /* Number of files for host certs. */
56	char   *pid_file;	/* Where to put our pid */
57	int     server_key_bits;/* Size of the server key. */
58	int     login_grace_time;	/* Disconnect if no auth in this time
59					 * (sec). */
60	int     key_regeneration_time;	/* Server key lifetime (seconds). */
61	int     permit_root_login;	/* PERMIT_*, see above */
62	int     ignore_rhosts;	/* Ignore .rhosts and .shosts. */
63	int     ignore_user_known_hosts;	/* Ignore ~/.ssh/known_hosts
64						 * for RhostsRsaAuth */
65	int     print_motd;	/* If true, print /etc/motd. */
66	int	print_lastlog;	/* If true, print lastlog */
67	int     x11_forwarding;	/* If true, permit inet (spoofing) X11 fwd. */
68	int     x11_display_offset;	/* What DISPLAY number to start
69					 * searching at */
70	int     x11_use_localhost;	/* If true, use localhost for fake X11 server. */
71	char   *xauth_location;	/* Location of xauth program */
72	int     strict_modes;	/* If true, require string home dir modes. */
73	int     tcp_keep_alive;	/* If true, set SO_KEEPALIVE. */
74	char   *ciphers;	/* Supported SSH2 ciphers. */
75	char   *macs;		/* Supported SSH2 macs. */
76	int	protocol;	/* Supported protocol versions. */
77	int     gateway_ports;	/* If true, allow remote connects to forwarded ports. */
78	SyslogFacility log_facility;	/* Facility for system logging. */
79	LogLevel log_level;	/* Level for system logging. */
80	int     rhosts_rsa_authentication;	/* If true, permit rhosts RSA
81						 * authentication. */
82	int     hostbased_authentication;	/* If true, permit ssh2 hostbased auth */
83	int     hostbased_uses_name_from_packet_only; /* experimental */
84	int     rsa_authentication;	/* If true, permit RSA authentication. */
85	int     pubkey_authentication;	/* If true, permit ssh2 pubkey authentication. */
86	int     kerberos_authentication;	/* If true, permit Kerberos
87						 * authentication. */
88	int     kerberos_or_local_passwd;	/* If true, permit kerberos
89						 * and any other password
90						 * authentication mechanism,
91						 * such as SecurID or
92						 * /etc/passwd */
93	int     kerberos_ticket_cleanup;	/* If true, destroy ticket
94						 * file on logout. */
95	int     kerberos_get_afs_token;		/* If true, try to get AFS token if
96						 * authenticated with Kerberos. */
97	int     gss_authentication;	/* If true, permit GSSAPI authentication */
98	int     gss_cleanup_creds;	/* If true, destroy cred cache on logout */
99	int     password_authentication;	/* If true, permit password
100						 * authentication. */
101	int     kbd_interactive_authentication;	/* If true, permit */
102	int     challenge_response_authentication;
103	int     zero_knowledge_password_authentication;
104					/* If true, permit jpake auth */
105	int     permit_empty_passwd;	/* If false, do not permit empty
106					 * passwords. */
107	int     permit_user_env;	/* If true, read ~/.ssh/environment */
108	int     use_login;	/* If true, login(1) is used */
109	int     compression;	/* If true, compression is allowed */
110	int	allow_tcp_forwarding;
111	int	allow_agent_forwarding;
112	u_int num_allow_users;
113	char   *allow_users[MAX_ALLOW_USERS];
114	u_int num_deny_users;
115	char   *deny_users[MAX_DENY_USERS];
116	u_int num_allow_groups;
117	char   *allow_groups[MAX_ALLOW_GROUPS];
118	u_int num_deny_groups;
119	char   *deny_groups[MAX_DENY_GROUPS];
120
121	u_int num_subsystems;
122	char   *subsystem_name[MAX_SUBSYSTEMS];
123	char   *subsystem_command[MAX_SUBSYSTEMS];
124	char   *subsystem_args[MAX_SUBSYSTEMS];
125
126	u_int num_accept_env;
127	char   *accept_env[MAX_ACCEPT_ENV];
128
129	int	max_startups_begin;
130	int	max_startups_rate;
131	int	max_startups;
132	int	max_authtries;
133	int	max_sessions;
134	char   *banner;			/* SSH-2 banner message */
135	int	use_dns;
136	int	client_alive_interval;	/*
137					 * poke the client this often to
138					 * see if it's still there
139					 */
140	int	client_alive_count_max;	/*
141					 * If the client is unresponsive
142					 * for this many intervals above,
143					 * disconnect the session
144					 */
145
146	char   *authorized_keys_file;	/* File containing public keys */
147	char   *authorized_keys_file2;
148
149	char   *adm_forced_command;
150
151	int	permit_tun;
152
153	int	num_permitted_opens;
154
155	char   *chroot_directory;
156	char   *revoked_keys_file;
157	char   *trusted_user_ca_keys;
158	char   *authorized_principals_file;
159}       ServerOptions;
160
161void	 initialize_server_options(ServerOptions *);
162void	 fill_default_server_options(ServerOptions *);
163int	 process_server_config_line(ServerOptions *, char *, const char *, int,
164	     int *, const char *, const char *, const char *);
165void	 load_server_config(const char *, Buffer *);
166void	 parse_server_config(ServerOptions *, const char *, Buffer *,
167	     const char *, const char *, const char *);
168void	 parse_server_match_config(ServerOptions *, const char *, const char *,
169	     const char *);
170void	 copy_set_server_options(ServerOptions *, ServerOptions *, int);
171void	 dump_config(ServerOptions *);
172char	*derelativise_path(const char *);
173
174#endif				/* SERVCONF_H */
175