1 /* $OpenBSD: servconf.h,v 1.87 2009/01/22 10:02:34 djm 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 */
38 #define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */
40 /* Magic name for internal sftp-server */
41 #define INTERNAL_SFTP_NAME "internal-sftp"
45 u_int ports_from_cmdline;
46 int ports[MAX_PORTS]; /* Port number to listen on. */
47 char *listen_addr; /* Address on which the server listens. */
48 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
49 int address_family; /* Address family used by the server. */
50 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
51 int num_host_key_files; /* Number of files for host keys. */
52 char *pid_file; /* Where to put our pid */
53 int server_key_bits;/* Size of the server key. */
54 int login_grace_time; /* Disconnect if no auth in this time
56 int key_regeneration_time; /* Server key lifetime (seconds). */
57 int permit_root_login; /* PERMIT_*, see above */
58 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
59 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
60 * for RhostsRsaAuth */
61 int print_motd; /* If true, print /etc/motd. */
62 int print_lastlog; /* If true, print lastlog */
63 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
64 int x11_display_offset; /* What DISPLAY number to start
66 int x11_use_localhost; /* If true, use localhost for fake X11 server. */
67 char *xauth_location; /* Location of xauth program */
68 int strict_modes; /* If true, require string home dir modes. */
69 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */
70 char *ciphers; /* Supported SSH2 ciphers. */
71 char *macs; /* Supported SSH2 macs. */
72 int protocol; /* Supported protocol versions. */
73 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
74 SyslogFacility log_facility; /* Facility for system logging. */
75 LogLevel log_level; /* Level for system logging. */
76 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
78 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
79 int hostbased_uses_name_from_packet_only; /* experimental */
80 int rsa_authentication; /* If true, permit RSA authentication. */
81 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
82 int kerberos_authentication; /* If true, permit Kerberos
84 int kerberos_or_local_passwd; /* If true, permit kerberos
85 * and any other password
86 * authentication mechanism,
89 int kerberos_ticket_cleanup; /* If true, destroy ticket
92 int session_hooks_allow; /* If true, permit user hooks */
93 char* session_hooks_startup_cmd; /* cmd to be executed before */
94 char* session_hooks_shutdown_cmd; /* cmd to be executed after */
96 int kerberos_get_afs_token; /* If true, try to get AFS token if
97 * authenticated with Kerberos. */
98 int gsi_allow_limited_proxy; /* If true, accept limited proxies */
99 int gss_authentication; /* If true, permit GSSAPI authentication */
100 int gss_deleg_creds; /* If true, store delegated GSSAPI credentials*/
101 int gss_keyex; /* If true, permit GSSAPI key exchange */
102 int gss_cleanup_creds; /* If true, destroy cred cache on logout */
103 char* gss_creds_path; /* If true, destroy cred cache on logout */
104 int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
106 int password_authentication; /* If true, permit password
108 int kbd_interactive_authentication; /* If true, permit */
109 int challenge_response_authentication;
110 int zero_knowledge_password_authentication;
111 /* If true, permit jpake auth */
112 int permit_empty_passwd; /* If false, do not permit empty
114 int permit_user_env; /* If true, read ~/.ssh/environment */
115 int use_login; /* If true, login(1) is used */
116 int compression; /* If true, compression is allowed */
117 int allow_tcp_forwarding;
118 int allow_agent_forwarding;
119 u_int num_allow_users;
120 char *allow_users[MAX_ALLOW_USERS];
121 u_int num_deny_users;
122 char *deny_users[MAX_DENY_USERS];
123 u_int num_allow_groups;
124 char *allow_groups[MAX_ALLOW_GROUPS];
125 u_int num_deny_groups;
126 char *deny_groups[MAX_DENY_GROUPS];
128 u_int num_subsystems;
129 char *subsystem_name[MAX_SUBSYSTEMS];
130 char *subsystem_command[MAX_SUBSYSTEMS];
131 char *subsystem_args[MAX_SUBSYSTEMS];
133 u_int num_accept_env;
134 char *accept_env[MAX_ACCEPT_ENV];
136 int max_startups_begin;
137 int max_startups_rate;
141 char *banner; /* SSH-2 banner message */
143 int client_alive_interval; /*
144 * poke the client this often to
145 * see if it's still there
147 int client_alive_count_max; /*
148 * If the client is unresponsive
149 * for this many intervals above,
150 * disconnect the session
153 char *authorized_keys_file; /* File containing public keys */
154 char *authorized_keys_file2;
156 char *adm_forced_command;
158 int use_pam; /* Enable auth via PAM */
159 int permit_pam_user_change; /* Allow PAM to change user name */
160 int none_enabled; /* enable NONE cipher switch */
161 int tcp_rcv_buf_poll; /* poll tcp rcv window in autotuning kernels*/
162 int hpn_disabled; /* disable hpn functionality. false by default */
163 int hpn_buffer_size; /* set the hpn buffer size - default 3MB */
167 int num_permitted_opens;
169 char *chroot_directory;
172 void initialize_server_options(ServerOptions *);
173 void fill_default_server_options(ServerOptions *);
174 int process_server_config_line(ServerOptions *, char *, const char *, int,
175 int *, const char *, const char *, const char *);
176 void load_server_config(const char *, Buffer *);
177 void parse_server_config(ServerOptions *, const char *, Buffer *,
178 const char *, const char *, const char *);
179 void parse_server_match_config(ServerOptions *, const char *, const char *,
181 void copy_set_server_options(ServerOptions *, ServerOptions *, int);
182 void dump_config(ServerOptions *);
184 #endif /* SERVCONF_H */