1 /* $OpenBSD: servconf.h,v 1.62 2003/07/22 13:35:22 markus 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 28 /* permit_root_login */ 29 #define PERMIT_NOT_SET -1 30 #define PERMIT_NO 0 31 #define PERMIT_FORCED_ONLY 1 32 #define PERMIT_NO_PASSWD 2 33 #define PERMIT_YES 3 34 35 36 typedef struct { 37 u_int num_ports; 38 u_int ports_from_cmdline; 39 u_short ports[MAX_PORTS]; /* Port number to listen on. */ 40 char *listen_addr; /* Address on which the server listens. */ 41 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */ 42 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */ 43 int num_host_key_files; /* Number of files for host keys. */ 44 char *pid_file; /* Where to put our pid */ 45 int server_key_bits;/* Size of the server key. */ 46 int login_grace_time; /* Disconnect if no auth in this time 47 * (sec). */ 48 int key_regeneration_time; /* Server key lifetime (seconds). */ 49 int permit_root_login; /* PERMIT_*, see above */ 50 int ignore_rhosts; /* Ignore .rhosts and .shosts. */ 51 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts 52 * for RhostsRsaAuth */ 53 int print_motd; /* If true, print /etc/motd. */ 54 int print_lastlog; /* If true, print lastlog */ 55 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */ 56 int x11_display_offset; /* What DISPLAY number to start 57 * searching at */ 58 int x11_use_localhost; /* If true, use localhost for fake X11 server. */ 59 char *xauth_location; /* Location of xauth program */ 60 int strict_modes; /* If true, require string home dir modes. */ 61 int keepalives; /* If true, set SO_KEEPALIVE. */ 62 char *ciphers; /* Supported SSH2 ciphers. */ 63 char *macs; /* Supported SSH2 macs. */ 64 int protocol; /* Supported protocol versions. */ 65 int gateway_ports; /* If true, allow remote connects to forwarded ports. */ 66 SyslogFacility log_facility; /* Facility for system logging. */ 67 LogLevel log_level; /* Level for system logging. */ 68 int rhosts_authentication; /* If true, permit rhosts 69 * authentication. */ 70 int rhosts_rsa_authentication; /* If true, permit rhosts RSA 71 * authentication. */ 72 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */ 73 int hostbased_uses_name_from_packet_only; /* experimental */ 74 int rsa_authentication; /* If true, permit RSA authentication. */ 75 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */ 76 int kerberos_authentication; /* If true, permit Kerberos 77 * authentication. */ 78 int kerberos_or_local_passwd; /* If true, permit kerberos 79 * and any other password 80 * authentication mechanism, 81 * such as SecurID or 82 * /etc/passwd */ 83 int kerberos_ticket_cleanup; /* If true, destroy ticket 84 * file on logout. */ 85 int kerberos_tgt_passing; /* If true, permit Kerberos TGT 86 * passing. */ 87 int password_authentication; /* If true, permit password 88 * authentication. */ 89 int kbd_interactive_authentication; /* If true, permit */ 90 int challenge_response_authentication; 91 int permit_empty_passwd; /* If false, do not permit empty 92 * passwords. */ 93 int permit_user_env; /* If true, read ~/.ssh/environment */ 94 int use_login; /* If true, login(1) is used */ 95 int compression; /* If true, compression is allowed */ 96 int allow_tcp_forwarding; 97 u_int num_allow_users; 98 char *allow_users[MAX_ALLOW_USERS]; 99 u_int num_deny_users; 100 char *deny_users[MAX_DENY_USERS]; 101 u_int num_allow_groups; 102 char *allow_groups[MAX_ALLOW_GROUPS]; 103 u_int num_deny_groups; 104 char *deny_groups[MAX_DENY_GROUPS]; 105 106 u_int num_subsystems; 107 char *subsystem_name[MAX_SUBSYSTEMS]; 108 char *subsystem_command[MAX_SUBSYSTEMS]; 109 110 int max_startups_begin; 111 int max_startups_rate; 112 int max_startups; 113 char *banner; /* SSH-2 banner message */ 114 int use_dns; 115 int client_alive_interval; /* 116 * poke the client this often to 117 * see if it's still there 118 */ 119 int client_alive_count_max; /* 120 * If the client is unresponsive 121 * for this many intervals above, 122 * disconnect the session 123 */ 124 125 char *authorized_keys_file; /* File containing public keys */ 126 char *authorized_keys_file2; 127 } ServerOptions; 128 129 void initialize_server_options(ServerOptions *); 130 void read_server_config(ServerOptions *, const char *); 131 void fill_default_server_options(ServerOptions *); 132 int process_server_config_line(ServerOptions *, char *, const char *, int); 133 134 135 #endif /* SERVCONF_H */ 136