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Damien Millerd4a8b7e1999-10-27 13:42:43 +10001/*
Damien Miller95def091999-11-25 00:26:21 +11002 * Author: Tatu Ylonen <ylo@cs.hut.fi>
Damien Miller95def091999-11-25 00:26:21 +11003 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
Damien Miller95def091999-11-25 00:26:21 +11005 * Definitions for server configuration data and for the functions reading it.
Damien Miller4af51302000-04-16 11:18:38 +10006 *
Damien Millere4340be2000-09-16 13:29:08 +11007 * 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".
Damien Miller95def091999-11-25 00:26:21 +110012 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100013
Damien Millerc5d86352002-02-05 12:13:41 +110014/* RCSID("$OpenBSD: servconf.h,v 1.53 2002/01/29 14:32:03 markus Exp $"); */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100015
16#ifndef SERVCONF_H
17#define SERVCONF_H
18
Damien Miller34132e52000-01-14 15:45:46 +110019#define MAX_PORTS 256 /* Max # ports. */
20
Damien Miller95def091999-11-25 00:26:21 +110021#define MAX_ALLOW_USERS 256 /* Max # users on allow list. */
22#define MAX_DENY_USERS 256 /* Max # users on deny list. */
23#define MAX_ALLOW_GROUPS 256 /* Max # groups on allow list. */
24#define MAX_DENY_GROUPS 256 /* Max # groups on deny list. */
Damien Millerf6d9e222000-06-18 14:50:44 +100025#define MAX_SUBSYSTEMS 256 /* Max # subsystems. */
Damien Miller0bc1bd82000-11-13 22:57:25 +110026#define MAX_HOSTKEYS 256 /* Max # hostkeys. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100027
Ben Lindstromd8a90212001-02-15 03:08:27 +000028/* permit_root_login */
29#define PERMIT_NOT_SET -1
30#define PERMIT_NO 0
31#define PERMIT_FORCED_ONLY 1
32#define PERMIT_NO_PASSWD 2
33#define PERMIT_YES 3
34
35
Damien Miller95def091999-11-25 00:26:21 +110036typedef struct {
Ben Lindstrom46c16222000-12-22 01:43:59 +000037 u_int num_ports;
38 u_int ports_from_cmdline;
Damien Miller34132e52000-01-14 15:45:46 +110039 u_short ports[MAX_PORTS]; /* Port number to listen on. */
40 char *listen_addr; /* Address on which the server listens. */
41 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
Damien Miller0bc1bd82000-11-13 22:57:25 +110042 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
43 int num_host_key_files; /* Number of files for host keys. */
Damien Miller6f83b8e2000-05-02 09:23:45 +100044 char *pid_file; /* Where to put our pid */
Damien Miller95def091999-11-25 00:26:21 +110045 int server_key_bits;/* Size of the server key. */
46 int login_grace_time; /* Disconnect if no auth in this time
47 * (sec). */
48 int key_regeneration_time; /* Server key lifetime (seconds). */
Ben Lindstromd8a90212001-02-15 03:08:27 +000049 int permit_root_login; /* PERMIT_*, see above */
Damien Miller95def091999-11-25 00:26:21 +110050 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
51 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
52 * for RhostsRsaAuth */
53 int print_motd; /* If true, print /etc/motd. */
Ben Lindstrom7bfff362001-03-26 05:45:53 +000054 int print_lastlog; /* If true, print lastlog */
Damien Miller95def091999-11-25 00:26:21 +110055 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
56 int x11_display_offset; /* What DISPLAY number to start
57 * searching at */
Damien Miller95c249f2002-02-05 12:11:34 +110058 int x11_use_localhost; /* If true, use localhost for fake X11 server. */
Damien Millerd3a18572000-06-07 19:55:44 +100059 char *xauth_location; /* Location of xauth program */
Damien Miller95def091999-11-25 00:26:21 +110060 int strict_modes; /* If true, require string home dir modes. */
61 int keepalives; /* If true, set SO_KEEPALIVE. */
Ben Lindstrom06b33aa2001-02-15 03:01:59 +000062 char *ciphers; /* Supported SSH2 ciphers. */
63 char *macs; /* Supported SSH2 macs. */
64 int protocol; /* Supported protocol versions. */
Damien Millere247cc42000-05-07 12:03:14 +100065 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
Damien Miller95def091999-11-25 00:26:21 +110066 SyslogFacility log_facility; /* Facility for system logging. */
67 LogLevel log_level; /* Level for system logging. */
68 int rhosts_authentication; /* If true, permit rhosts
69 * authentication. */
70 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
71 * authentication. */
Ben Lindstrom5eabda32001-04-12 23:34:34 +000072 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
73 int hostbased_uses_name_from_packet_only; /* experimental */
Damien Miller95def091999-11-25 00:26:21 +110074 int rsa_authentication; /* If true, permit RSA authentication. */
Damien Miller0bc1bd82000-11-13 22:57:25 +110075 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
Ben Lindstromec95ed92001-07-04 04:21:14 +000076#if defined(KRB4) || defined(KRB5)
Damien Miller95def091999-11-25 00:26:21 +110077 int kerberos_authentication; /* If true, permit Kerberos
78 * authentication. */
79 int kerberos_or_local_passwd; /* If true, permit kerberos
80 * and any other password
81 * authentication mechanism,
82 * such as SecurID or
83 * /etc/passwd */
84 int kerberos_ticket_cleanup; /* If true, destroy ticket
85 * file on logout. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100086#endif
Ben Lindstromec95ed92001-07-04 04:21:14 +000087#if defined(AFS) || defined(KRB5)
88 int kerberos_tgt_passing; /* If true, permit Kerberos TGT
Damien Miller95def091999-11-25 00:26:21 +110089 * passing. */
Ben Lindstromec95ed92001-07-04 04:21:14 +000090#endif
91#ifdef AFS
Damien Miller95def091999-11-25 00:26:21 +110092 int afs_token_passing; /* If true, permit AFS token passing. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100093#endif
Damien Miller95def091999-11-25 00:26:21 +110094 int password_authentication; /* If true, permit password
95 * authentication. */
Damien Miller874d77b2000-10-14 16:23:11 +110096 int kbd_interactive_authentication; /* If true, permit */
Ben Lindstrom551ea372001-06-05 18:56:16 +000097 int challenge_response_authentication;
Damien Miller95def091999-11-25 00:26:21 +110098 int permit_empty_passwd; /* If false, do not permit empty
99 * passwords. */
100 int use_login; /* If true, login(1) is used */
Damien Miller50a41ed2000-10-16 12:14:42 +1100101 int allow_tcp_forwarding;
Ben Lindstrom46c16222000-12-22 01:43:59 +0000102 u_int num_allow_users;
Damien Miller95def091999-11-25 00:26:21 +1100103 char *allow_users[MAX_ALLOW_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000104 u_int num_deny_users;
Damien Miller95def091999-11-25 00:26:21 +1100105 char *deny_users[MAX_DENY_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000106 u_int num_allow_groups;
Damien Miller95def091999-11-25 00:26:21 +1100107 char *allow_groups[MAX_ALLOW_GROUPS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000108 u_int num_deny_groups;
Damien Miller95def091999-11-25 00:26:21 +1100109 char *deny_groups[MAX_DENY_GROUPS];
Damien Millerf6d9e222000-06-18 14:50:44 +1000110
Ben Lindstrom46c16222000-12-22 01:43:59 +0000111 u_int num_subsystems;
Damien Millerf6d9e222000-06-18 14:50:44 +1000112 char *subsystem_name[MAX_SUBSYSTEMS];
113 char *subsystem_command[MAX_SUBSYSTEMS];
Damien Miller37023962000-07-11 17:31:38 +1000114
Damien Miller942da032000-08-18 13:59:06 +1000115 int max_startups_begin;
116 int max_startups_rate;
Damien Miller37023962000-07-11 17:31:38 +1000117 int max_startups;
Ben Lindstrom48bd7c12001-01-09 00:35:42 +0000118 char *banner; /* SSH-2 banner message */
Damien Millerc5d86352002-02-05 12:13:41 +1100119 int verify_reverse_mapping; /* cross-check ip and dns */
Ben Lindstrom5744dc42001-04-13 23:28:01 +0000120 int client_alive_interval; /*
Damien Miller9f0f5c62001-12-21 14:45:46 +1100121 * poke the client this often to
122 * see if it's still there
Ben Lindstrom5744dc42001-04-13 23:28:01 +0000123 */
124 int client_alive_count_max; /*
Ben Lindstrom7bb37b22001-09-12 16:40:05 +0000125 * If the client is unresponsive
126 * for this many intervals above,
Damien Miller9f0f5c62001-12-21 14:45:46 +1100127 * disconnect the session
Ben Lindstrom5744dc42001-04-13 23:28:01 +0000128 */
Kevin Stevese468de62001-07-04 18:37:20 +0000129
130 char *authorized_keys_file; /* File containing public keys */
131 char *authorized_keys_file2;
Damien Millerf8154422001-04-25 22:44:14 +1000132 int pam_authentication_via_kbd_int;
Kevin Stevese468de62001-07-04 18:37:20 +0000133
Damien Miller95def091999-11-25 00:26:21 +1100134} ServerOptions;
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000135
Ben Lindstrom4cc240d2001-07-04 04:46:56 +0000136void initialize_server_options(ServerOptions *);
137void read_server_config(ServerOptions *, const char *);
138void fill_default_server_options(ServerOptions *);
Ben Lindstromade03f62001-12-06 18:22:17 +0000139int process_server_config_line(ServerOptions *, char *, const char *, int);
140
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000141
Damien Miller95def091999-11-25 00:26:21 +1100142#endif /* SERVCONF_H */