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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 Miller33804262001-02-04 23:20:18 +110014/* RCSID("$OpenBSD: servconf.h,v 1.36 2001/02/03 10:08:37 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
Damien Miller95def091999-11-25 00:26:21 +110028typedef struct {
Ben Lindstrom46c16222000-12-22 01:43:59 +000029 u_int num_ports;
30 u_int ports_from_cmdline;
Damien Miller34132e52000-01-14 15:45:46 +110031 u_short ports[MAX_PORTS]; /* Port number to listen on. */
32 char *listen_addr; /* Address on which the server listens. */
33 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
Damien Miller0bc1bd82000-11-13 22:57:25 +110034 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
35 int num_host_key_files; /* Number of files for host keys. */
Damien Miller6f83b8e2000-05-02 09:23:45 +100036 char *pid_file; /* Where to put our pid */
Damien Miller95def091999-11-25 00:26:21 +110037 int server_key_bits;/* Size of the server key. */
38 int login_grace_time; /* Disconnect if no auth in this time
39 * (sec). */
40 int key_regeneration_time; /* Server key lifetime (seconds). */
41 int permit_root_login; /* If true, permit root login. */
42 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
43 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
44 * for RhostsRsaAuth */
45 int print_motd; /* If true, print /etc/motd. */
46 int check_mail; /* If true, check for new mail. */
47 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
48 int x11_display_offset; /* What DISPLAY number to start
49 * searching at */
Damien Millerd3a18572000-06-07 19:55:44 +100050 char *xauth_location; /* Location of xauth program */
Damien Miller95def091999-11-25 00:26:21 +110051 int strict_modes; /* If true, require string home dir modes. */
52 int keepalives; /* If true, set SO_KEEPALIVE. */
Damien Miller78928792000-04-12 20:17:38 +100053 char *ciphers; /* Ciphers in order of preference. */
54 int protocol; /* Protocol in order of preference. */
Damien Millere247cc42000-05-07 12:03:14 +100055 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
Damien Miller95def091999-11-25 00:26:21 +110056 SyslogFacility log_facility; /* Facility for system logging. */
57 LogLevel log_level; /* Level for system logging. */
58 int rhosts_authentication; /* If true, permit rhosts
59 * authentication. */
60 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
61 * authentication. */
62 int rsa_authentication; /* If true, permit RSA authentication. */
Damien Miller0bc1bd82000-11-13 22:57:25 +110063 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100064#ifdef KRB4
Damien Miller95def091999-11-25 00:26:21 +110065 int kerberos_authentication; /* If true, permit Kerberos
66 * authentication. */
67 int kerberos_or_local_passwd; /* If true, permit kerberos
68 * and any other password
69 * authentication mechanism,
70 * such as SecurID or
71 * /etc/passwd */
72 int kerberos_ticket_cleanup; /* If true, destroy ticket
73 * file on logout. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100074#endif
75#ifdef AFS
Damien Miller95def091999-11-25 00:26:21 +110076 int kerberos_tgt_passing; /* If true, permit Kerberos tgt
77 * passing. */
78 int afs_token_passing; /* If true, permit AFS token passing. */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100079#endif
Damien Miller95def091999-11-25 00:26:21 +110080 int password_authentication; /* If true, permit password
81 * authentication. */
Damien Miller874d77b2000-10-14 16:23:11 +110082 int kbd_interactive_authentication; /* If true, permit */
Ben Lindstrom95fb2dd2001-01-23 03:12:10 +000083 int challenge_reponse_authentication;
Damien Miller95def091999-11-25 00:26:21 +110084 int permit_empty_passwd; /* If false, do not permit empty
85 * passwords. */
86 int use_login; /* If true, login(1) is used */
Damien Miller50a41ed2000-10-16 12:14:42 +110087 int allow_tcp_forwarding;
Ben Lindstrom46c16222000-12-22 01:43:59 +000088 u_int num_allow_users;
Damien Miller95def091999-11-25 00:26:21 +110089 char *allow_users[MAX_ALLOW_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +000090 u_int num_deny_users;
Damien Miller95def091999-11-25 00:26:21 +110091 char *deny_users[MAX_DENY_USERS];
Ben Lindstrom46c16222000-12-22 01:43:59 +000092 u_int num_allow_groups;
Damien Miller95def091999-11-25 00:26:21 +110093 char *allow_groups[MAX_ALLOW_GROUPS];
Ben Lindstrom46c16222000-12-22 01:43:59 +000094 u_int num_deny_groups;
Damien Miller95def091999-11-25 00:26:21 +110095 char *deny_groups[MAX_DENY_GROUPS];
Damien Millerf6d9e222000-06-18 14:50:44 +100096
Ben Lindstrom46c16222000-12-22 01:43:59 +000097 u_int num_subsystems;
Damien Millerf6d9e222000-06-18 14:50:44 +100098 char *subsystem_name[MAX_SUBSYSTEMS];
99 char *subsystem_command[MAX_SUBSYSTEMS];
Damien Miller37023962000-07-11 17:31:38 +1000100
Damien Miller942da032000-08-18 13:59:06 +1000101 int max_startups_begin;
102 int max_startups_rate;
Damien Miller37023962000-07-11 17:31:38 +1000103 int max_startups;
Ben Lindstrom48bd7c12001-01-09 00:35:42 +0000104 char *banner; /* SSH-2 banner message */
Damien Miller33804262001-02-04 23:20:18 +1100105 int reverse_mapping_check; /* cross-check ip and dns */
Damien Miller37023962000-07-11 17:31:38 +1000106
Damien Miller95def091999-11-25 00:26:21 +1100107} ServerOptions;
Damien Miller5428f641999-11-25 11:54:57 +1100108/*
109 * Initializes the server options to special values that indicate that they
110 * have not yet been set.
111 */
Damien Miller95def091999-11-25 00:26:21 +1100112void initialize_server_options(ServerOptions * options);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000113
Damien Miller5428f641999-11-25 11:54:57 +1100114/*
115 * Reads the server configuration file. This only sets the values for those
116 * options that have the special value indicating they have not been set.
117 */
Damien Miller95def091999-11-25 00:26:21 +1100118void read_server_config(ServerOptions * options, const char *filename);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000119
120/* Sets values for those values that have not yet been set. */
Damien Miller95def091999-11-25 00:26:21 +1100121void fill_default_server_options(ServerOptions * options);
Damien Millerd4a8b7e1999-10-27 13:42:43 +1000122
Damien Miller95def091999-11-25 00:26:21 +1100123#endif /* SERVCONF_H */