1 /* $NetBSD: servconf.h,v 1.2 2009/06/07 22:38:47 christos Exp $ */ 2 /* $OpenBSD: servconf.h,v 1.87 2009/01/22 10:02:34 djm Exp $ */ 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 #define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */ 40 41 /* Magic name for internal sftp-server */ 42 #define INTERNAL_SFTP_NAME "internal-sftp" 43 44 typedef struct { 45 u_int num_ports; 46 u_int ports_from_cmdline; 47 int ports[MAX_PORTS]; /* Port number to listen on. */ 48 char *listen_addr; /* Address on which the server listens. */ 49 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */ 50 int address_family; /* Address family used by the server. */ 51 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */ 52 int num_host_key_files; /* Number of files for host keys. */ 53 char *pid_file; /* Where to put our pid */ 54 int server_key_bits;/* Size of the server key. */ 55 int login_grace_time; /* Disconnect if no auth in this time 56 * (sec). */ 57 int key_regeneration_time; /* Server key lifetime (seconds). */ 58 int permit_root_login; /* PERMIT_*, see above */ 59 int ignore_rhosts; /* Ignore .rhosts and .shosts. */ 60 int ignore_root_rhosts; /* Ignore .rhosts and .shosts for root; 61 defaults to ignore_rhosts if not 62 given. */ 63 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts 64 * for RhostsRsaAuth */ 65 int print_motd; /* If true, print /etc/motd. */ 66 int print_lastlog; /* If true, print lastlog */ 67 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */ 68 int x11_display_offset; /* What DISPLAY number to start 69 * searching at */ 70 int x11_use_localhost; /* If true, use localhost for fake X11 server. */ 71 char *xauth_location; /* Location of xauth program */ 72 int strict_modes; /* If true, require string home dir modes. */ 73 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */ 74 char *ciphers; /* Supported SSH2 ciphers. */ 75 char *macs; /* Supported SSH2 macs. */ 76 int protocol; /* Supported protocol versions. */ 77 int gateway_ports; /* If true, allow remote connects to forwarded ports. */ 78 SyslogFacility log_facility; /* Facility for system logging. */ 79 LogLevel log_level; /* Level for system logging. */ 80 int rhosts_rsa_authentication; /* If true, permit rhosts RSA 81 * authentication. */ 82 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */ 83 int hostbased_uses_name_from_packet_only; /* experimental */ 84 int rsa_authentication; /* If true, permit RSA authentication. */ 85 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */ 86 int kerberos_authentication; /* If true, permit Kerberos 87 * authentication. */ 88 int kerberos_or_local_passwd; /* If true, permit kerberos 89 * and any other password 90 * authentication mechanism, 91 * such as SecurID or 92 * /etc/passwd */ 93 int kerberos_ticket_cleanup; /* If true, destroy ticket 94 * file on logout. */ 95 int kerberos_tgt_passing; /* If true, permit Kerberos TGT 96 * passing. */ 97 int kerberos_get_afs_token; /* If true, try to get AFS token if 98 * authenticated with Kerberos. */ 99 #ifdef AFS 100 int afs_token_passing; /* If true, permit AFS token passing. */ 101 #endif 102 int gss_authentication; /* If true, permit GSSAPI authentication */ 103 int gss_cleanup_creds; /* If true, destroy cred cache on logout */ 104 int password_authentication; /* If true, permit password 105 * authentication. */ 106 int kbd_interactive_authentication; /* If true, permit */ 107 int challenge_response_authentication; 108 int zero_knowledge_password_authentication; 109 /* If true, permit jpake auth */ 110 int permit_empty_passwd; /* If false, do not permit empty 111 * passwords. */ 112 int permit_user_env; /* If true, read ~/.ssh/environment */ 113 int use_login; /* If true, login(1) is used */ 114 int compression; /* If true, compression is allowed */ 115 int allow_tcp_forwarding; 116 int allow_agent_forwarding; 117 u_int num_allow_users; 118 char *allow_users[MAX_ALLOW_USERS]; 119 u_int num_deny_users; 120 char *deny_users[MAX_DENY_USERS]; 121 u_int num_allow_groups; 122 char *allow_groups[MAX_ALLOW_GROUPS]; 123 u_int num_deny_groups; 124 char *deny_groups[MAX_DENY_GROUPS]; 125 126 u_int num_subsystems; 127 char *subsystem_name[MAX_SUBSYSTEMS]; 128 char *subsystem_command[MAX_SUBSYSTEMS]; 129 char *subsystem_args[MAX_SUBSYSTEMS]; 130 131 u_int num_accept_env; 132 char *accept_env[MAX_ACCEPT_ENV]; 133 134 int max_startups_begin; 135 int max_startups_rate; 136 int max_startups; 137 int max_authtries; 138 int max_sessions; 139 char *banner; /* SSH-2 banner message */ 140 int use_dns; 141 int client_alive_interval; /* 142 * poke the client this often to 143 * see if it's still there 144 */ 145 int client_alive_count_max; /* 146 * If the client is unresponsive 147 * for this many intervals above, 148 * disconnect the session 149 */ 150 151 char *authorized_keys_file; /* File containing public keys */ 152 char *authorized_keys_file2; 153 154 int use_pam; /* Enable auth via PAM */ 155 int none_enabled; /* enable NONE cipher switch */ 156 int tcp_rcv_buf_poll; /* poll tcp rcv window in autotuning kernels*/ 157 int hpn_disabled; /* disable hpn functionality. false by default */ 158 int hpn_buffer_size; /* set the hpn buffer size - default 3MB */ 159 160 char *adm_forced_command; 161 162 int permit_tun; 163 164 int num_permitted_opens; 165 166 char *chroot_directory; 167 } ServerOptions; 168 169 void initialize_server_options(ServerOptions *); 170 void fill_default_server_options(ServerOptions *); 171 int process_server_config_line(ServerOptions *, char *, const char *, int, 172 int *, const char *, const char *, const char *); 173 void load_server_config(const char *, Buffer *); 174 void parse_server_config(ServerOptions *, const char *, Buffer *, 175 const char *, const char *, const char *); 176 void parse_server_match_config(ServerOptions *, const char *, const char *, 177 const char *); 178 void copy_set_server_options(ServerOptions *, ServerOptions *, int); 179 void dump_config(ServerOptions *); 180 181 #endif /* SERVCONF_H */ 182