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 int kerberos_get_afs_token; /* If true, try to get AFS token if 92 * authenticated with Kerberos. */ 93 int gss_authentication; /* If true, permit GSSAPI authentication */ 94 int gss_cleanup_creds; /* If true, destroy cred cache on logout */ 95 int password_authentication; /* If true, permit password 96 * authentication. */ 97 int kbd_interactive_authentication; /* If true, permit */ 98 int challenge_response_authentication; 99 int zero_knowledge_password_authentication; 100 /* If true, permit jpake auth */ 101 int permit_blacklisted_keys; /* If true, permit */ 102 int permit_empty_passwd; /* If false, do not permit empty 103 * passwords. */ 104 int permit_user_env; /* If true, read ~/.ssh/environment */ 105 int use_login; /* If true, login(1) is used */ 106 int compression; /* If true, compression is allowed */ 107 int allow_tcp_forwarding; 108 int allow_agent_forwarding; 109 u_int num_allow_users; 110 char *allow_users[MAX_ALLOW_USERS]; 111 u_int num_deny_users; 112 char *deny_users[MAX_DENY_USERS]; 113 u_int num_allow_groups; 114 char *allow_groups[MAX_ALLOW_GROUPS]; 115 u_int num_deny_groups; 116 char *deny_groups[MAX_DENY_GROUPS]; 117 118 u_int num_subsystems; 119 char *subsystem_name[MAX_SUBSYSTEMS]; 120 char *subsystem_command[MAX_SUBSYSTEMS]; 121 char *subsystem_args[MAX_SUBSYSTEMS]; 122 123 u_int num_accept_env; 124 char *accept_env[MAX_ACCEPT_ENV]; 125 126 int max_startups_begin; 127 int max_startups_rate; 128 int max_startups; 129 int max_authtries; 130 int max_sessions; 131 char *banner; /* SSH-2 banner message */ 132 int use_dns; 133 int client_alive_interval; /* 134 * poke the client this often to 135 * see if it's still there 136 */ 137 int client_alive_count_max; /* 138 * If the client is unresponsive 139 * for this many intervals above, 140 * disconnect the session 141 */ 142 143 char *authorized_keys_file; /* File containing public keys */ 144 char *authorized_keys_file2; 145 146 char *adm_forced_command; 147 148 int use_pam; /* Enable auth via PAM */ 149 150 int permit_tun; 151 152 int num_permitted_opens; 153 154 char *chroot_directory; 155 } ServerOptions; 156 157 void initialize_server_options(ServerOptions *); 158 void fill_default_server_options(ServerOptions *); 159 int process_server_config_line(ServerOptions *, char *, const char *, int, 160 int *, const char *, const char *, const char *); 161 void load_server_config(const char *, Buffer *); 162 void parse_server_config(ServerOptions *, const char *, Buffer *, 163 const char *, const char *, const char *); 164 void parse_server_match_config(ServerOptions *, const char *, const char *, 165 const char *); 166 void copy_set_server_options(ServerOptions *, ServerOptions *, int); 167 void dump_config(ServerOptions *); 168 169 #endif /* SERVCONF_H */ 170