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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
Ben Lindstrombfb3a0e2001-06-05 20:25:05 +000014/* RCSID("$OpenBSD: servconf.h,v 1.43 2001/05/20 17:20:35 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 check_mail; /* If true, check for new mail. */
56 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
57 int x11_display_offset; /* What DISPLAY number to start
58 * searching at */
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. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100076#ifdef KRB4
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
87#ifdef AFS
Damien Miller95def091999-11-25 00:26:21 +110088 int kerberos_tgt_passing; /* If true, permit Kerberos tgt
89 * passing. */
90 int afs_token_passing; /* If true, permit AFS token passing. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100091#endif
Damien Miller95def091999-11-25 00:26:21 +110092 int password_authentication; /* If true, permit password
93 * authentication. */
Damien Miller874d77b2000-10-14 16:23:11 +110094 int kbd_interactive_authentication; /* If true, permit */
Ben Lindstrom551ea372001-06-05 18:56:16 +000095 int challenge_response_authentication;
Damien Miller95def091999-11-25 00:26:21 +110096 int permit_empty_passwd; /* If false, do not permit empty
97 * passwords. */
98 int use_login; /* If true, login(1) is used */
Damien Miller50a41ed2000-10-16 12:14:42 +110099 int allow_tcp_forwarding;
Ben Lindstrom46c16222000-12-22 01:43:59 +0000100 u_int num_allow_users;
Damien Miller95def091999-11-25 00:26:21 +1100101 char *allow_users[MAX_ALLOW_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000102 u_int num_deny_users;
Damien Miller95def091999-11-25 00:26:21 +1100103 char *deny_users[MAX_DENY_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000104 u_int num_allow_groups;
Damien Miller95def091999-11-25 00:26:21 +1100105 char *allow_groups[MAX_ALLOW_GROUPS];
Ben Lindstrom46c16222000-12-22 01:43:59 +0000106 u_int num_deny_groups;
Damien Miller95def091999-11-25 00:26:21 +1100107 char *deny_groups[MAX_DENY_GROUPS];
Damien Millerf6d9e222000-06-18 14:50:44 +1000108
Ben Lindstrom46c16222000-12-22 01:43:59 +0000109 u_int num_subsystems;
Damien Millerf6d9e222000-06-18 14:50:44 +1000110 char *subsystem_name[MAX_SUBSYSTEMS];
111 char *subsystem_command[MAX_SUBSYSTEMS];
Damien Miller37023962000-07-11 17:31:38 +1000112
Damien Miller942da032000-08-18 13:59:06 +1000113 int max_startups_begin;
114 int max_startups_rate;
Damien Miller37023962000-07-11 17:31:38 +1000115 int max_startups;
Ben Lindstrom48bd7c12001-01-09 00:35:42 +0000116 char *banner; /* SSH-2 banner message */
Damien Miller33804262001-02-04 23:20:18 +1100117 int reverse_mapping_check; /* cross-check ip and dns */
Ben Lindstrom5744dc42001-04-13 23:28:01 +0000118 int client_alive_interval; /*
119 * poke the client this often to
120 * see if it's still there
121 */
122 int client_alive_count_max; /*
123 *If the client is unresponsive
124 * for this many intervals, above
125 * diconnect the session
126 */
Ben Lindstrombfb3a0e2001-06-05 20:25:05 +0000127 char *authorized_keys_file; /* File containing public RSA keys */
128 char *authorized_keys_file2; /* File containing public SSH2 keys */
Damien Millerf8154422001-04-25 22:44:14 +1000129 int pam_authentication_via_kbd_int;
Damien Miller95def091999-11-25 00:26:21 +1100130} ServerOptions;
Damien Miller5428f641999-11-25 11:54:57 +1100131/*
132 * Initializes the server options to special values that indicate that they
133 * have not yet been set.
134 */
Damien Miller95def091999-11-25 00:26:21 +1100135void initialize_server_options(ServerOptions * options);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000136
Damien Miller5428f641999-11-25 11:54:57 +1100137/*
138 * Reads the server configuration file. This only sets the values for those
139 * options that have the special value indicating they have not been set.
140 */
Damien Miller95def091999-11-25 00:26:21 +1100141void read_server_config(ServerOptions * options, const char *filename);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000142
143/* Sets values for those values that have not yet been set. */
Damien Miller95def091999-11-25 00:26:21 +1100144void fill_default_server_options(ServerOptions * options);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000145
Damien Miller95def091999-11-25 00:26:21 +1100146#endif /* SERVCONF_H */