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1 | /* $OpenBSD: servconf.h,v 1.87 2009/01/22 10:02:34 djm Exp $ */ | |
2 | ||
3 | /* | |
4 | * Author: Tatu Ylonen <ylo@cs.hut.fi> | |
5 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
6 | * All rights reserved | |
7 | * Definitions for server configuration data and for the functions reading it. | |
8 | * | |
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". | |
14 | */ | |
15 | ||
16 | #ifndef SERVCONF_H | |
17 | #define SERVCONF_H | |
18 | ||
19 | #define MAX_PORTS 256 /* Max # ports. */ | |
20 | ||
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. */ | |
29 | ||
30 | /* permit_root_login */ | |
31 | #define PERMIT_NOT_SET -1 | |
32 | #define PERMIT_NO 0 | |
33 | #define PERMIT_FORCED_ONLY 1 | |
34 | #define PERMIT_NO_PASSWD 2 | |
35 | #define PERMIT_YES 3 | |
36 | ||
37 | #define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */ | |
38 | #define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */ | |
39 | ||
40 | /* Magic name for internal sftp-server */ | |
41 | #define INTERNAL_SFTP_NAME "internal-sftp" | |
42 | ||
43 | typedef struct { | |
44 | u_int num_ports; | |
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 | |
55 | * (sec). */ | |
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 | |
65 | * searching at */ | |
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 | |
77 | * authentication. */ | |
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 | |
83 | * authentication. */ | |
84 | int kerberos_or_local_passwd; /* If true, permit kerberos | |
85 | * and any other password | |
86 | * authentication mechanism, | |
87 | * such as SecurID or | |
88 | * /etc/passwd */ | |
89 | int kerberos_ticket_cleanup; /* If true, destroy ticket | |
90 | * file on logout. */ | |
91 | #ifdef SESSION_HOOKS | |
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 */ | |
95 | #endif | |
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 */ | |
105 | int gss_store_rekey; | |
106 | int password_authentication; /* If true, permit password | |
107 | * authentication. */ | |
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 | |
113 | * passwords. */ | |
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]; | |
127 | ||
128 | u_int num_subsystems; | |
129 | char *subsystem_name[MAX_SUBSYSTEMS]; | |
130 | char *subsystem_command[MAX_SUBSYSTEMS]; | |
131 | char *subsystem_args[MAX_SUBSYSTEMS]; | |
132 | ||
133 | u_int num_accept_env; | |
134 | char *accept_env[MAX_ACCEPT_ENV]; | |
135 | ||
136 | int max_startups_begin; | |
137 | int max_startups_rate; | |
138 | int max_startups; | |
139 | int max_authtries; | |
140 | int max_sessions; | |
141 | char *banner; /* SSH-2 banner message */ | |
142 | int use_dns; | |
143 | int client_alive_interval; /* | |
144 | * poke the client this often to | |
145 | * see if it's still there | |
146 | */ | |
147 | int client_alive_count_max; /* | |
148 | * If the client is unresponsive | |
149 | * for this many intervals above, | |
150 | * disconnect the session | |
151 | */ | |
152 | ||
153 | char *authorized_keys_file; /* File containing public keys */ | |
154 | char *authorized_keys_file2; | |
155 | ||
156 | char *adm_forced_command; | |
157 | ||
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 */ | |
164 | ||
165 | int permit_tun; | |
166 | ||
167 | int num_permitted_opens; | |
168 | ||
169 | char *chroot_directory; | |
170 | } ServerOptions; | |
171 | ||
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 *, | |
180 | const char *); | |
181 | void copy_set_server_options(ServerOptions *, ServerOptions *, int); | |
182 | void dump_config(ServerOptions *); | |
183 | ||
184 | #endif /* SERVCONF_H */ |