1 /* $OpenBSD: servconf.h,v 1.79 2006/08/14 12:40:25 dtucker Exp $ */
4 * Author: Tatu Ylonen <ylo@cs.hut.fi>
5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
7 * Definitions for server configuration data and for the functions reading it.
9 * As far as I am concerned, the code I have written for this software
10 * can be used freely for any purpose. Any derived versions of this
11 * software must be clearly marked as such, and if the derived work is
12 * incompatible with the protocol description in the RFC file, it must be
13 * called by a name other than "ssh" or "Secure Shell".
19 #define MAX_PORTS 256 /* Max # ports. */
21 #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. */
25 #define MAX_SUBSYSTEMS 256 /* Max # subsystems. */
26 #define MAX_HOSTKEYS 256 /* Max # hostkeys. */
27 #define MAX_ACCEPT_ENV 256 /* Max # of env vars. */
28 #define MAX_MATCH_GROUPS 256 /* Max # of groups for Match. */
30 /* permit_root_login */
31 #define PERMIT_NOT_SET -1
33 #define PERMIT_FORCED_ONLY 1
34 #define PERMIT_NO_PASSWD 2
37 #define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */
41 u_int ports_from_cmdline;
42 u_short ports[MAX_PORTS]; /* Port number to listen on. */
43 char *listen_addr; /* Address on which the server listens. */
44 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
45 int address_family; /* Address family used by the server. */
46 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
47 int num_host_key_files; /* Number of files for host keys. */
48 char *pid_file; /* Where to put our pid */
49 int server_key_bits;/* Size of the server key. */
50 int login_grace_time; /* Disconnect if no auth in this time
52 int key_regeneration_time; /* Server key lifetime (seconds). */
53 int permit_root_login; /* PERMIT_*, see above */
54 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
55 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
56 * for RhostsRsaAuth */
57 int print_motd; /* If true, print /etc/motd. */
58 int print_lastlog; /* If true, print lastlog */
59 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
60 int x11_display_offset; /* What DISPLAY number to start
62 int x11_use_localhost; /* If true, use localhost for fake X11 server. */
63 char *xauth_location; /* Location of xauth program */
64 int strict_modes; /* If true, require string home dir modes. */
65 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */
66 char *ciphers; /* Supported SSH2 ciphers. */
67 char *macs; /* Supported SSH2 macs. */
68 int protocol; /* Supported protocol versions. */
69 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
70 SyslogFacility log_facility; /* Facility for system logging. */
71 LogLevel log_level; /* Level for system logging. */
72 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
74 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
75 int hostbased_uses_name_from_packet_only; /* experimental */
76 int rsa_authentication; /* If true, permit RSA authentication. */
77 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
78 int kerberos_authentication; /* If true, permit Kerberos
80 int kerberos_or_local_passwd; /* If true, permit kerberos
81 * and any other password
82 * authentication mechanism,
85 int kerberos_ticket_cleanup; /* If true, destroy ticket
88 int session_hooks_allow; /* If true, permit user hooks */
89 char* session_hooks_startup_cmd; /* cmd to be executed before */
90 char* session_hooks_shutdown_cmd; /* cmd to be executed after */
92 int kerberos_get_afs_token; /* If true, try to get AFS token if
93 * authenticated with Kerberos. */
94 int gss_authentication; /* If true, permit GSSAPI authentication */
95 int gss_keyex; /* If true, permit GSSAPI key exchange */
96 int gss_cleanup_creds; /* If true, destroy cred cache on logout */
97 int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
98 int gsi_allow_limited_proxy; /* If true, accept limited proxies */
99 int password_authentication; /* If true, permit password
101 int kbd_interactive_authentication; /* If true, permit */
102 int challenge_response_authentication;
103 int permit_empty_passwd; /* If false, do not permit empty
105 int permit_user_env; /* If true, read ~/.ssh/environment */
106 int use_login; /* If true, login(1) is used */
107 int compression; /* If true, compression is allowed */
108 int allow_tcp_forwarding;
109 u_int num_allow_users;
110 char *allow_users[MAX_ALLOW_USERS];
111 u_int num_deny_users;
112 char *deny_users[MAX_DENY_USERS];
113 u_int num_allow_groups;
114 char *allow_groups[MAX_ALLOW_GROUPS];
115 u_int num_deny_groups;
116 char *deny_groups[MAX_DENY_GROUPS];
118 u_int num_subsystems;
119 char *subsystem_name[MAX_SUBSYSTEMS];
120 char *subsystem_command[MAX_SUBSYSTEMS];
121 char *subsystem_args[MAX_SUBSYSTEMS];
123 u_int num_accept_env;
124 char *accept_env[MAX_ACCEPT_ENV];
126 int max_startups_begin;
127 int max_startups_rate;
130 char *banner; /* SSH-2 banner message */
132 int client_alive_interval; /*
133 * poke the client this often to
134 * see if it's still there
136 int client_alive_count_max; /*
137 * If the client is unresponsive
138 * for this many intervals above,
139 * disconnect the session
142 char *authorized_keys_file; /* File containing public keys */
143 char *authorized_keys_file2;
145 char *adm_forced_command;
147 int use_pam; /* Enable auth via PAM */
148 int none_enabled; /* enable NONE cipher switch */
149 int tcp_rcv_buf_poll; /* poll tcp rcv window in autotuning kernels*/
150 int hpn_disabled; /* disable hpn functionality. false by default */
151 int hpn_buffer_size; /* set the hpn buffer size - default 3MB */
155 int num_permitted_opens;
158 void initialize_server_options(ServerOptions *);
159 void fill_default_server_options(ServerOptions *);
160 int process_server_config_line(ServerOptions *, char *, const char *, int,
161 int *, const char *, const char *, const char *);
162 void load_server_config(const char *, Buffer *);
163 void parse_server_config(ServerOptions *, const char *, Buffer *,
164 const char *, const char *, const char *);
165 void parse_server_match_config(ServerOptions *, const char *, const char *,
167 void copy_set_server_options(ServerOptions *, ServerOptions *);
169 #endif /* SERVCONF_H */