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/* $OpenBSD: servconf.h,v 1.75 2006/07/12 11:34:58 dtucker Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
* Definitions for server configuration data and for the functions reading it.
*
* As far as I am concerned, the code I have written for this software
* can be used freely for any purpose. Any derived versions of this
* software must be clearly marked as such, and if the derived work is
* incompatible with the protocol description in the RFC file, it must be
* called by a name other than "ssh" or "Secure Shell".
*/
#ifndef SERVCONF_H
#define SERVCONF_H
#include "buffer.h"
#define MAX_PORTS 256 /* Max # ports. */
#define MAX_ALLOW_USERS 256 /* Max # users on allow list. */
#define MAX_DENY_USERS 256 /* Max # users on deny list. */
#define MAX_ALLOW_GROUPS 256 /* Max # groups on allow list. */
#define MAX_DENY_GROUPS 256 /* Max # groups on deny list. */
#define MAX_SUBSYSTEMS 256 /* Max # subsystems. */
#define MAX_HOSTKEYS 256 /* Max # hostkeys. */
#define MAX_ACCEPT_ENV 256 /* Max # of env vars. */
/* permit_root_login */
#define PERMIT_NOT_SET -1
#define PERMIT_NO 0
#define PERMIT_FORCED_ONLY 1
#define PERMIT_NO_PASSWD 2
#define PERMIT_YES 3
#define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */
typedef struct {
u_int num_ports;
u_int ports_from_cmdline;
u_short ports[MAX_PORTS]; /* Port number to listen on. */
char *listen_addr; /* Address on which the server listens. */
struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
int address_family; /* Address family used by the server. */
char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
int num_host_key_files; /* Number of files for host keys. */
char *pid_file; /* Where to put our pid */
int server_key_bits;/* Size of the server key. */
int login_grace_time; /* Disconnect if no auth in this time
* (sec). */
int key_regeneration_time; /* Server key lifetime (seconds). */
int permit_root_login; /* PERMIT_*, see above */
int ignore_rhosts; /* Ignore .rhosts and .shosts. */
int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
* for RhostsRsaAuth */
int print_motd; /* If true, print /etc/motd. */
int print_lastlog; /* If true, print lastlog */
int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
int x11_display_offset; /* What DISPLAY number to start
* searching at */
int x11_use_localhost; /* If true, use localhost for fake X11 server. */
char *xauth_location; /* Location of xauth program */
int strict_modes; /* If true, require string home dir modes. */
int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */
char *ciphers; /* Supported SSH2 ciphers. */
char *macs; /* Supported SSH2 macs. */
int protocol; /* Supported protocol versions. */
int gateway_ports; /* If true, allow remote connects to forwarded ports. */
SyslogFacility log_facility; /* Facility for system logging. */
LogLevel log_level; /* Level for system logging. */
int rhosts_rsa_authentication; /* If true, permit rhosts RSA
* authentication. */
int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
int hostbased_uses_name_from_packet_only; /* experimental */
int rsa_authentication; /* If true, permit RSA authentication. */
int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
int kerberos_authentication; /* If true, permit Kerberos
* authentication. */
int kerberos_or_local_passwd; /* If true, permit kerberos
* and any other password
* authentication mechanism,
* such as SecurID or
* /etc/passwd */
int kerberos_ticket_cleanup; /* If true, destroy ticket
* file on logout. */
int kerberos_get_afs_token; /* If true, try to get AFS token if
* authenticated with Kerberos. */
int gss_authentication; /* If true, permit GSSAPI authentication */
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
int password_authentication; /* If true, permit password
* authentication. */
int kbd_interactive_authentication; /* If true, permit */
int challenge_response_authentication;
int permit_empty_passwd; /* If false, do not permit empty
* passwords. */
int permit_user_env; /* If true, read ~/.ssh/environment */
int use_login; /* If true, login(1) is used */
int compression; /* If true, compression is allowed */
int allow_tcp_forwarding;
u_int num_allow_users;
char *allow_users[MAX_ALLOW_USERS];
u_int num_deny_users;
char *deny_users[MAX_DENY_USERS];
u_int num_allow_groups;
char *allow_groups[MAX_ALLOW_GROUPS];
u_int num_deny_groups;
char *deny_groups[MAX_DENY_GROUPS];
u_int num_subsystems;
char *subsystem_name[MAX_SUBSYSTEMS];
char *subsystem_command[MAX_SUBSYSTEMS];
char *subsystem_args[MAX_SUBSYSTEMS];
u_int num_accept_env;
char *accept_env[MAX_ACCEPT_ENV];
int max_startups_begin;
int max_startups_rate;
int max_startups;
int max_authtries;
char *banner; /* SSH-2 banner message */
int use_dns;
int client_alive_interval; /*
* poke the client this often to
* see if it's still there
*/
int client_alive_count_max; /*
* If the client is unresponsive
* for this many intervals above,
* disconnect the session
*/
char *authorized_keys_file; /* File containing public keys */
char *authorized_keys_file2;
int permit_tun;
} ServerOptions;
void initialize_server_options(ServerOptions *);
void fill_default_server_options(ServerOptions *);
int process_server_config_line(ServerOptions *, char *, const char *, int,
int *, const char *, const char *, const char *);
void load_server_config(const char *, Buffer *);
void parse_server_config(ServerOptions *, const char *, Buffer *,
const char *, const char *, const char *);
void parse_server_match_config(ServerOptions *, const char *, const char *,
const char *);
void copy_set_server_options(ServerOptions *, ServerOptions *);
#endif /* SERVCONF_H */
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