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 /* RCSID("$OpenBSD: servconf.h,v 1.51 2001/12/19 07:18:56 deraadt Exp $"); */ 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 char *xauth_location; /* Location of xauth program */ 59 int strict_modes; /* If true, require string home dir modes. */ 60 int keepalives; /* If true, set SO_KEEPALIVE. */ 61 char *ciphers; /* Supported SSH2 ciphers. */ 62 char *macs; /* Supported SSH2 macs. */ 63 int protocol; /* Supported protocol versions. */ 64 int gateway_ports; /* If true, allow remote connects to forwarded ports. */ 65 SyslogFacility log_facility; /* Facility for system logging. */ 66 LogLevel log_level; /* Level for system logging. */ 67 int rhosts_authentication; /* If true, permit rhosts 68 * authentication. */ 69 int rhosts_rsa_authentication; /* If true, permit rhosts RSA 70 * authentication. */ 71 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */ 72 int hostbased_uses_name_from_packet_only; /* experimental */ 73 int rsa_authentication; /* If true, permit RSA authentication. */ 74 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */ 75 #if defined(KRB4) || defined(KRB5) 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 #endif 86 #if defined(AFS) || defined(KRB5) 87 int kerberos_tgt_passing; /* If true, permit Kerberos TGT 88 * passing. */ 89 #endif 90 #ifdef AFS 91 int afs_token_passing; /* If true, permit AFS token passing. */ 92 #endif 93 int password_authentication; /* If true, permit password 94 * authentication. */ 95 int kbd_interactive_authentication; /* If true, permit */ 96 int challenge_response_authentication; 97 int permit_empty_passwd; /* If false, do not permit empty 98 * passwords. */ 99 int use_login; /* If true, login(1) is used */ 100 int allow_tcp_forwarding; 101 u_int num_allow_users; 102 char *allow_users[MAX_ALLOW_USERS]; 103 u_int num_deny_users; 104 char *deny_users[MAX_DENY_USERS]; 105 u_int num_allow_groups; 106 char *allow_groups[MAX_ALLOW_GROUPS]; 107 u_int num_deny_groups; 108 char *deny_groups[MAX_DENY_GROUPS]; 109 110 u_int num_subsystems; 111 char *subsystem_name[MAX_SUBSYSTEMS]; 112 char *subsystem_command[MAX_SUBSYSTEMS]; 113 114 int max_startups_begin; 115 int max_startups_rate; 116 int max_startups; 117 char *banner; /* SSH-2 banner message */ 118 int reverse_mapping_check; /* cross-check ip and dns */ 119 int client_alive_interval; /* 120 * poke the client this often to 121 * see if it's still there 122 */ 123 int client_alive_count_max; /* 124 * If the client is unresponsive 125 * for this many intervals above, 126 * disconnect the session 127 */ 128 129 char *authorized_keys_file; /* File containing public keys */ 130 char *authorized_keys_file2; 131 132 } ServerOptions; 133 134 void initialize_server_options(ServerOptions *); 135 void read_server_config(ServerOptions *, const char *); 136 void fill_default_server_options(ServerOptions *); 137 int process_server_config_line(ServerOptions *, char *, const char *, int); 138 139 140 #endif /* SERVCONF_H */ 141