1 /* $OpenBSD: servconf.h,v 1.79 2006/08/14 12:40:25 dtucker Exp $ */ 2 /* $FreeBSD$ */ 3 4 /* 5 * Author: Tatu Ylonen <ylo@cs.hut.fi> 6 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 7 * All rights reserved 8 * Definitions for server configuration data and for the functions reading it. 9 * 10 * As far as I am concerned, the code I have written for this software 11 * can be used freely for any purpose. Any derived versions of this 12 * software must be clearly marked as such, and if the derived work is 13 * incompatible with the protocol description in the RFC file, it must be 14 * called by a name other than "ssh" or "Secure Shell". 15 */ 16 17 #ifndef SERVCONF_H 18 #define SERVCONF_H 19 20 #define MAX_PORTS 256 /* Max # ports. */ 21 22 #define MAX_ALLOW_USERS 256 /* Max # users on allow list. */ 23 #define MAX_DENY_USERS 256 /* Max # users on deny list. */ 24 #define MAX_ALLOW_GROUPS 256 /* Max # groups on allow list. */ 25 #define MAX_DENY_GROUPS 256 /* Max # groups on deny list. */ 26 #define MAX_SUBSYSTEMS 256 /* Max # subsystems. */ 27 #define MAX_HOSTKEYS 256 /* Max # hostkeys. */ 28 #define MAX_ACCEPT_ENV 256 /* Max # of env vars. */ 29 #define MAX_MATCH_GROUPS 256 /* Max # of groups for Match. */ 30 31 /* permit_root_login */ 32 #define PERMIT_NOT_SET -1 33 #define PERMIT_NO 0 34 #define PERMIT_FORCED_ONLY 1 35 #define PERMIT_NO_PASSWD 2 36 #define PERMIT_YES 3 37 38 #define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */ 39 40 typedef struct { 41 u_int num_ports; 42 u_int ports_from_cmdline; 43 u_short ports[MAX_PORTS]; /* Port number to listen on. */ 44 char *listen_addr; /* Address on which the server listens. */ 45 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */ 46 int address_family; /* Address family used by the server. */ 47 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */ 48 int num_host_key_files; /* Number of files for host keys. */ 49 char *pid_file; /* Where to put our pid */ 50 int server_key_bits;/* Size of the server key. */ 51 int login_grace_time; /* Disconnect if no auth in this time 52 * (sec). */ 53 int key_regeneration_time; /* Server key lifetime (seconds). */ 54 int permit_root_login; /* PERMIT_*, see above */ 55 int ignore_rhosts; /* Ignore .rhosts and .shosts. */ 56 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts 57 * for RhostsRsaAuth */ 58 int print_motd; /* If true, print /etc/motd. */ 59 int print_lastlog; /* If true, print lastlog */ 60 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */ 61 int x11_display_offset; /* What DISPLAY number to start 62 * searching at */ 63 int x11_use_localhost; /* If true, use localhost for fake X11 server. */ 64 char *xauth_location; /* Location of xauth program */ 65 int strict_modes; /* If true, require string home dir modes. */ 66 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */ 67 char *ciphers; /* Supported SSH2 ciphers. */ 68 char *macs; /* Supported SSH2 macs. */ 69 int protocol; /* Supported protocol versions. */ 70 int gateway_ports; /* If true, allow remote connects to forwarded ports. */ 71 SyslogFacility log_facility; /* Facility for system logging. */ 72 LogLevel log_level; /* Level for system logging. */ 73 int rhosts_rsa_authentication; /* If true, permit rhosts RSA 74 * authentication. */ 75 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */ 76 int hostbased_uses_name_from_packet_only; /* experimental */ 77 int rsa_authentication; /* If true, permit RSA authentication. */ 78 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */ 79 int kerberos_authentication; /* If true, permit Kerberos 80 * authentication. */ 81 int kerberos_or_local_passwd; /* If true, permit kerberos 82 * and any other password 83 * authentication mechanism, 84 * such as SecurID or 85 * /etc/passwd */ 86 int kerberos_ticket_cleanup; /* If true, destroy ticket 87 * file on logout. */ 88 int kerberos_get_afs_token; /* If true, try to get AFS token if 89 * authenticated with Kerberos. */ 90 int gss_authentication; /* If true, permit GSSAPI authentication */ 91 int gss_cleanup_creds; /* If true, destroy cred cache on logout */ 92 int password_authentication; /* If true, permit password 93 * authentication. */ 94 int kbd_interactive_authentication; /* If true, permit */ 95 int challenge_response_authentication; 96 int permit_empty_passwd; /* If false, do not permit empty 97 * passwords. */ 98 int permit_user_env; /* If true, read ~/.ssh/environment */ 99 int use_login; /* If true, login(1) is used */ 100 int compression; /* If true, compression is allowed */ 101 int allow_tcp_forwarding; 102 u_int num_allow_users; 103 char *allow_users[MAX_ALLOW_USERS]; 104 u_int num_deny_users; 105 char *deny_users[MAX_DENY_USERS]; 106 u_int num_allow_groups; 107 char *allow_groups[MAX_ALLOW_GROUPS]; 108 u_int num_deny_groups; 109 char *deny_groups[MAX_DENY_GROUPS]; 110 111 u_int num_subsystems; 112 char *subsystem_name[MAX_SUBSYSTEMS]; 113 char *subsystem_command[MAX_SUBSYSTEMS]; 114 char *subsystem_args[MAX_SUBSYSTEMS]; 115 116 u_int num_accept_env; 117 char *accept_env[MAX_ACCEPT_ENV]; 118 119 int max_startups_begin; 120 int max_startups_rate; 121 int max_startups; 122 int max_authtries; 123 char *banner; /* SSH-2 banner message */ 124 int use_dns; 125 int client_alive_interval; /* 126 * poke the client this often to 127 * see if it's still there 128 */ 129 int client_alive_count_max; /* 130 * If the client is unresponsive 131 * for this many intervals above, 132 * disconnect the session 133 */ 134 135 char *authorized_keys_file; /* File containing public keys */ 136 char *authorized_keys_file2; 137 138 char *adm_forced_command; 139 140 int use_pam; /* Enable auth via PAM */ 141 142 int permit_tun; 143 144 int num_permitted_opens; 145 } ServerOptions; 146 147 void initialize_server_options(ServerOptions *); 148 void fill_default_server_options(ServerOptions *); 149 int process_server_config_line(ServerOptions *, char *, const char *, int, 150 int *, const char *, const char *, const char *); 151 void load_server_config(const char *, Buffer *); 152 void parse_server_config(ServerOptions *, const char *, Buffer *, 153 const char *, const char *, const char *); 154 void parse_server_match_config(ServerOptions *, const char *, const char *, 155 const char *); 156 void copy_set_server_options(ServerOptions *, ServerOptions *); 157 158 #endif /* SERVCONF_H */ 159