servconf.h revision 1.2 
1/*	$NetBSD: servconf.h,v 1.2 2009/06/07 22:38:47 christos Exp $	*/
2/* $OpenBSD: servconf.h,v 1.87 2009/01/22 10:02:34 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_ACCEPT_ENV		256	/* Max # of env vars. */
29#define MAX_MATCH_GROUPS	256	/* Max # of groups for Match. */
30
31/* permit_root_login */
32#define	PERMIT_NOT_SET		-1
33#define	PERMIT_NO		0
34#define	PERMIT_FORCED_ONLY	1
35#define	PERMIT_NO_PASSWD	2
36#define	PERMIT_YES		3
37
38#define DEFAULT_AUTH_FAIL_MAX	6	/* Default for MaxAuthTries */
39#define DEFAULT_SESSIONS_MAX	10	/* Default for MaxSessions */
40
41/* Magic name for internal sftp-server */
42#define INTERNAL_SFTP_NAME	"internal-sftp"
43
44typedef struct {
45	u_int	num_ports;
46	u_int	ports_from_cmdline;
47	int	ports[MAX_PORTS];	/* Port number to listen on. */
48	char   *listen_addr;		/* Address on which the server listens. */
49	struct addrinfo *listen_addrs;	/* Addresses on which the server listens. */
50	int     address_family;		/* Address family used by the server. */
51	char   *host_key_files[MAX_HOSTKEYS];	/* Files containing host keys. */
52	int     num_host_key_files;     /* Number of files for host keys. */
53	char   *pid_file;	/* Where to put our pid */
54	int     server_key_bits;/* Size of the server key. */
55	int     login_grace_time;	/* Disconnect if no auth in this time
56					 * (sec). */
57	int     key_regeneration_time;	/* Server key lifetime (seconds). */
58	int     permit_root_login;	/* PERMIT_*, see above */
59	int     ignore_rhosts;	/* Ignore .rhosts and .shosts. */
60	int     ignore_root_rhosts;	/* Ignore .rhosts and .shosts for root;
61					   defaults to ignore_rhosts if not
62					   given. */
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_tgt_passing;		/* If true, permit Kerberos TGT
96						 * passing. */
97	int     kerberos_get_afs_token;		/* If true, try to get AFS token if
98						 * authenticated with Kerberos. */
99#ifdef AFS
100	int     afs_token_passing;      /* If true, permit AFS token passing. */
101#endif
102	int     gss_authentication;	/* If true, permit GSSAPI authentication */
103	int     gss_cleanup_creds;	/* If true, destroy cred cache on logout */
104	int     password_authentication;	/* If true, permit password
105						 * authentication. */
106	int     kbd_interactive_authentication;	/* If true, permit */
107	int     challenge_response_authentication;
108	int     zero_knowledge_password_authentication;
109					/* If true, permit jpake auth */
110	int     permit_empty_passwd;	/* If false, do not permit empty
111					 * passwords. */
112	int     permit_user_env;	/* If true, read ~/.ssh/environment */
113	int     use_login;	/* If true, login(1) is used */
114	int     compression;	/* If true, compression is allowed */
115	int	allow_tcp_forwarding;
116	int	allow_agent_forwarding;
117	u_int num_allow_users;
118	char   *allow_users[MAX_ALLOW_USERS];
119	u_int num_deny_users;
120	char   *deny_users[MAX_DENY_USERS];
121	u_int num_allow_groups;
122	char   *allow_groups[MAX_ALLOW_GROUPS];
123	u_int num_deny_groups;
124	char   *deny_groups[MAX_DENY_GROUPS];
125
126	u_int num_subsystems;
127	char   *subsystem_name[MAX_SUBSYSTEMS];
128	char   *subsystem_command[MAX_SUBSYSTEMS];
129	char   *subsystem_args[MAX_SUBSYSTEMS];
130
131	u_int num_accept_env;
132	char   *accept_env[MAX_ACCEPT_ENV];
133
134	int	max_startups_begin;
135	int	max_startups_rate;
136	int	max_startups;
137	int	max_authtries;
138	int	max_sessions;
139	char   *banner;			/* SSH-2 banner message */
140	int	use_dns;
141	int	client_alive_interval;	/*
142					 * poke the client this often to
143					 * see if it's still there
144					 */
145	int	client_alive_count_max;	/*
146					 * If the client is unresponsive
147					 * for this many intervals above,
148					 * disconnect the session
149					 */
150
151	char   *authorized_keys_file;	/* File containing public keys */
152	char   *authorized_keys_file2;
153
154	int	use_pam;		/* Enable auth via PAM */
155	int     none_enabled;           /* enable NONE cipher switch */
156	int     tcp_rcv_buf_poll;       /* poll tcp rcv window in autotuning kernels*/
157	int	hpn_disabled;		/* disable hpn functionality. false by default */
158	int	hpn_buffer_size;	/* set the hpn buffer size - default 3MB */
159
160	char   *adm_forced_command;
161
162	int	permit_tun;
163
164	int	num_permitted_opens;
165
166	char   *chroot_directory;
167}       ServerOptions;
168
169void	 initialize_server_options(ServerOptions *);
170void	 fill_default_server_options(ServerOptions *);
171int	 process_server_config_line(ServerOptions *, char *, const char *, int,
172	     int *, const char *, const char *, const char *);
173void	 load_server_config(const char *, Buffer *);
174void	 parse_server_config(ServerOptions *, const char *, Buffer *,
175	     const char *, const char *, const char *);
176void	 parse_server_match_config(ServerOptions *, const char *, const char *,
177	     const char *);
178void	 copy_set_server_options(ServerOptions *, ServerOptions *, int);
179void	 dump_config(ServerOptions *);
180
181#endif				/* SERVCONF_H */
182