1 /*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
5 * Definitions for server configuration data and for the functions reading it.
6 *
7 * 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".
12 */
13 /*
14 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
15 */
16
17 /* $OpenBSD: servconf.h,v 1.59 2002/07/30 17:03:55 markus Exp $ */
18
19 #ifndef _SERVCONF_H
20 #define _SERVCONF_H
21
22 #ifdef __cplusplus
23 extern "C" {
24 #endif
25
26 #define MAX_PORTS 256 /* Max # ports. */
27
28 #define MAX_ALLOW_USERS 256 /* Max # users on allow list. */
29 #define MAX_DENY_USERS 256 /* Max # users on deny list. */
30 #define MAX_ALLOW_GROUPS 256 /* Max # groups on allow list. */
31 #define MAX_DENY_GROUPS 256 /* Max # groups on deny list. */
32 #define MAX_SUBSYSTEMS 256 /* Max # subsystems. */
33 #define MAX_HOSTKEYS 256 /* Max # hostkeys. */
34
35 /* permit_root_login */
36 #define PERMIT_NOT_SET -1
37 #define PERMIT_NO 0
38 #define PERMIT_FORCED_ONLY 1
39 #define PERMIT_NO_PASSWD 2
40 #define PERMIT_YES 3
41
42 /* Magic name for internal sftp-server */
43 #define INTERNAL_SFTP_NAME "internal-sftp"
44 #define _SSH_PAM_SERVICE_PREFIX "sshd"
45
46 typedef struct {
47 u_int num_ports;
48 u_int ports_from_cmdline;
49 u_short ports[MAX_PORTS]; /* Port number to listen on. */
50 char *listen_addr; /* Address on which the server listens. */
51 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
52 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
53 int num_host_key_files; /* Number of files for host keys. */
54 char *pid_file; /* Where to put our pid */
55 int server_key_bits;/* Size of the server key. */
56 int login_grace_time; /* Disconnect if no auth in this time
57 * (sec). */
58 int key_regeneration_time; /* Server key lifetime (seconds). */
59 int permit_root_login; /* PERMIT_*, see above */
60 int ignore_rhosts; /* Ignore .rhosts and .shosts. */
61 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts
62 * for RhostsRsaAuth */
63 int print_motd; /* If true, print /etc/motd. */
64 int print_lastlog; /* If true, print lastlog */
65 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
66 int x11_display_offset; /* What DISPLAY number to start
67 * searching at */
68 int x11_use_localhost; /* If true, use localhost for fake X11 server. */
69 char *xauth_location; /* Location of xauth program */
70 int strict_modes; /* If true, require string home dir modes. */
71 int keepalives; /* If true, set SO_KEEPALIVE. */
72 char *ciphers; /* Supported SSH2 ciphers. */
73 char *macs; /* Supported SSH2 macs. */
74 int protocol; /* Supported protocol versions. */
75 int gateway_ports; /* If true, allow remote connects to forwarded ports. */
76 SyslogFacility log_facility; /* Facility for system logging. */
77 LogLevel log_level; /* Level for system logging. */
78 int rhosts_authentication; /* If true, permit rhosts
79 * authentication. */
80 int rhosts_rsa_authentication; /* If true, permit rhosts RSA
81 * authentication. */
82 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */
83 int hostbased_uses_name_from_packet_only; /* experimental */
84 int rsa_authentication; /* If true, permit RSA authentication. */
85 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */
86 #ifdef GSSAPI
87 int gss_authentication;
88 int gss_keyex;
89 int gss_store_creds;
90 int gss_use_session_ccache; /* If true, delegated credentials are
91 * stored in a session specific cache */
92 int gss_cleanup_creds; /* If true, destroy cred cache on logout */
93 #endif /* GSSAPI */
94 #if defined(KRB4) || defined(KRB5)
95 int kerberos_authentication; /* If true, permit Kerberos
96 * authentication. */
97 int kerberos_or_local_passwd; /* If true, permit kerberos
98 * and any other password
99 * authentication mechanism,
100 * such as SecurID or
101 * /etc/passwd */
102 int kerberos_ticket_cleanup; /* If true, destroy ticket
103 * file on logout. */
104 #endif
105 #if defined(AFS) || defined(KRB5)
106 int kerberos_tgt_passing; /* If true, permit Kerberos TGT
107 * passing. */
108 #endif
109 #ifdef AFS
110 int afs_token_passing; /* If true, permit AFS token passing. */
111 #endif
112 int password_authentication; /* If true, permit password
113 * authentication. */
114
115 int kbd_interactive_authentication;
116 int challenge_response_authentication;
117 int pam_authentication_via_kbd_int;
118
119 int permit_empty_passwd; /* If false, do not permit empty
120 * passwords. */
121 int permit_user_env; /* If true, read ~/.ssh/environment */
122 int use_login; /* If true, login(1) is used */
123 int compression; /* If true, compression is allowed */
124 int allow_tcp_forwarding;
125
126 u_int num_allow_users;
127 char *allow_users[MAX_ALLOW_USERS];
128 u_int num_deny_users;
129 char *deny_users[MAX_DENY_USERS];
130 u_int num_allow_groups;
131 char *allow_groups[MAX_ALLOW_GROUPS];
132 u_int num_deny_groups;
133 char *deny_groups[MAX_DENY_GROUPS];
134
135 u_int num_subsystems;
136 char *subsystem_name[MAX_SUBSYSTEMS];
137 char *subsystem_command[MAX_SUBSYSTEMS];
138 char *subsystem_args[MAX_SUBSYSTEMS];
139
140 int max_startups_begin;
141 int max_startups_rate;
142 int max_startups;
143 char *banner; /* SSH-2 banner message */
144 int verify_reverse_mapping; /* cross-check ip and dns */
145 int client_alive_interval; /*
146 * poke the client this often to
147 * see if it's still there
148 */
149 int client_alive_count_max; /*
150 * If the client is unresponsive
151 * for this many intervals above,
152 * disconnect the session
153 */
154
155 char *authorized_keys_file; /* File containing public keys */
156 char *authorized_keys_file2;
157
158 int max_auth_tries;
159 int max_auth_tries_log;
160
161 int max_init_auth_tries; /* SUNW: /etc/default/login */
162 int max_init_auth_tries_log; /* SUNW: /etc/default/login */
163
164 int lookup_client_hostnames;
165 int use_openssl_engine;
166 char *chroot_directory;
167 char *pre_userauth_hook;
168 char *pam_service_prefix;
169 char *pam_service_name;
170
171 } ServerOptions;
172
173 void initialize_server_options(ServerOptions *);
174 void fill_default_server_options(ServerOptions *);
175 int process_server_config_line(ServerOptions *, char *, const char *, int,
176 int *, const char *, const char *, const char *);
177 void load_server_config(const char *, Buffer *);
178 void parse_server_config(ServerOptions *, const char *, Buffer *,
179 const char *, const char *, const char *);
180 void parse_server_match_config(ServerOptions *, const char *, const char *,
181 const char *);
182 void copy_set_server_options(ServerOptions *, ServerOptions *, int);
183 int chroot_requested(char *chroot_directory);
184
185 #ifdef __cplusplus
186 }
187 #endif
188
189
190 #endif /* _SERVCONF_H */