1 /* $OpenBSD: servconf.h,v 1.95 2010/11/13 23:27:50 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_HOSTCERTS 256 /* Max # host certificates. */
28 #define MAX_ACCEPT_ENV 256 /* Max # of env vars. */
29 #define MAX_MATCH_GROUPS 256 /* Max # of groups for Match. */
31 /* permit_root_login */
32 #define PERMIT_NOT_SET -1
34 #define PERMIT_FORCED_ONLY 1
35 #define PERMIT_NO_PASSWD 2
38 #define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */
39 #define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */
41 /* Magic name for internal sftp-server */
42 #define INTERNAL_SFTP_NAME "internal-sftp"
46 u_int ports_from_cmdline;
47 int ports[MAX_PORTS]; /* Port number to listen on. */
48 char *listen_addr; /* Address on which the server listens. */
49 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
50 int address_family; /* Address family used by the server. */
51 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
52 int num_host_key_files; /* Number of files for host keys. */
53 char *host_cert_files[MAX_HOSTCERTS]; /* Files containing host certs. */
54 int num_host_cert_files; /* Number of files for host certs. */
55 char *pid_file; /* Where to put our pid */
56 int server_key_bits;/* Size of the server key. */
57 int login_grace_time; /* Disconnect if no auth in this time
59 int key_regeneration_time; /* Server key lifetime (seconds). */
60 int permit_root_login; /* PERMIT_*, see above */
61 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
62 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
63 * for RhostsRsaAuth */
64 int print_motd; /* If true, print /etc/motd. */
65 int print_lastlog; /* If true, print lastlog */
66 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
67 int x11_display_offset; /* What DISPLAY number to start
69 int x11_use_localhost; /* If true, use localhost for fake X11 server. */
70 char *xauth_location; /* Location of xauth program */
71 int strict_modes; /* If true, require string home dir modes. */
72 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */
73 int ip_qos_interactive; /* IP ToS/DSCP/class for interactive */
74 int ip_qos_bulk; /* IP ToS/DSCP/class for bulk traffic */
75 char *ciphers; /* Supported SSH2 ciphers. */
76 char *macs; /* Supported SSH2 macs. */
77 char *kex_algorithms; /* SSH2 kex methods in order of preference. */
78 int protocol; /* Supported protocol versions. */
79 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
80 SyslogFacility log_facility; /* Facility for system logging. */
81 LogLevel log_level; /* Level for system logging. */
82 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
84 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
85 int hostbased_uses_name_from_packet_only; /* experimental */
86 int rsa_authentication; /* If true, permit RSA authentication. */
87 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
88 int kerberos_authentication; /* If true, permit Kerberos
90 int kerberos_or_local_passwd; /* If true, permit kerberos
91 * and any other password
92 * authentication mechanism,
95 int kerberos_ticket_cleanup; /* If true, destroy ticket
97 int kerberos_get_afs_token; /* If true, try to get AFS token if
98 * authenticated with Kerberos. */
99 int gss_authentication; /* If true, permit GSSAPI authentication */
100 int gss_keyex; /* If true, permit GSSAPI key exchange */
101 int gss_cleanup_creds; /* If true, destroy cred cache on logout */
102 int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
103 int password_authentication; /* If true, permit password
105 int kbd_interactive_authentication; /* If true, permit */
106 int challenge_response_authentication;
107 int zero_knowledge_password_authentication;
108 /* If true, permit jpake auth */
109 int permit_empty_passwd; /* If false, do not permit empty
111 int permit_user_env; /* If true, read ~/.ssh/environment */
112 int use_login; /* If true, login(1) is used */
113 int compression; /* If true, compression is allowed */
114 int allow_tcp_forwarding;
115 int allow_agent_forwarding;
116 u_int num_allow_users;
117 char *allow_users[MAX_ALLOW_USERS];
118 u_int num_deny_users;
119 char *deny_users[MAX_DENY_USERS];
120 u_int num_allow_groups;
121 char *allow_groups[MAX_ALLOW_GROUPS];
122 u_int num_deny_groups;
123 char *deny_groups[MAX_DENY_GROUPS];
125 u_int num_subsystems;
126 char *subsystem_name[MAX_SUBSYSTEMS];
127 char *subsystem_command[MAX_SUBSYSTEMS];
128 char *subsystem_args[MAX_SUBSYSTEMS];
130 u_int num_accept_env;
131 char *accept_env[MAX_ACCEPT_ENV];
133 int max_startups_begin;
134 int max_startups_rate;
138 char *banner; /* SSH-2 banner message */
140 int client_alive_interval; /*
141 * poke the client this often to
142 * see if it's still there
144 int client_alive_count_max; /*
145 * If the client is unresponsive
146 * for this many intervals above,
147 * disconnect the session
150 char *authorized_keys_file; /* File containing public keys */
151 char *authorized_keys_file2;
153 char *adm_forced_command;
155 int use_pam; /* Enable auth via PAM */
159 int num_permitted_opens;
161 char *chroot_directory;
162 char *revoked_keys_file;
163 char *trusted_user_ca_keys;
164 char *authorized_principals_file;
167 void initialize_server_options(ServerOptions *);
168 void fill_default_server_options(ServerOptions *);
169 int process_server_config_line(ServerOptions *, char *, const char *, int,
170 int *, const char *, const char *, const char *);
171 void load_server_config(const char *, Buffer *);
172 void parse_server_config(ServerOptions *, const char *, Buffer *,
173 const char *, const char *, const char *);
174 void parse_server_match_config(ServerOptions *, const char *, const char *,
176 void copy_set_server_options(ServerOptions *, ServerOptions *, int);
177 void dump_config(ServerOptions *);
178 char *derelativise_path(const char *);
180 #endif /* SERVCONF_H */