1 /* $NetBSD: servconf.h,v 1.4 2010/11/21 18:59:04 adam Exp $ */ 2 /* $OpenBSD: servconf.h,v 1.93 2010/05/07 11:30:30 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 #ifdef WITH_LDAP_PUBKEY 21 #include "ldapauth.h" 22 #endif 23 24 #define MAX_PORTS 256 /* Max # ports. */ 25 26 #define MAX_ALLOW_USERS 256 /* Max # users on allow list. */ 27 #define MAX_DENY_USERS 256 /* Max # users on deny list. */ 28 #define MAX_ALLOW_GROUPS 256 /* Max # groups on allow list. */ 29 #define MAX_DENY_GROUPS 256 /* Max # groups on deny list. */ 30 #define MAX_SUBSYSTEMS 256 /* Max # subsystems. */ 31 #define MAX_HOSTKEYS 256 /* Max # hostkeys. */ 32 #define MAX_HOSTCERTS 256 /* Max # host certificates. */ 33 #define MAX_ACCEPT_ENV 256 /* Max # of env vars. */ 34 #define MAX_MATCH_GROUPS 256 /* Max # of groups for Match. */ 35 36 /* permit_root_login */ 37 #define PERMIT_NOT_SET -1 38 #define PERMIT_NO 0 39 #define PERMIT_FORCED_ONLY 1 40 #define PERMIT_NO_PASSWD 2 41 #define PERMIT_YES 3 42 43 #define DEFAULT_AUTH_FAIL_MAX 6 /* Default for MaxAuthTries */ 44 #define DEFAULT_SESSIONS_MAX 10 /* Default for MaxSessions */ 45 46 /* Magic name for internal sftp-server */ 47 #define INTERNAL_SFTP_NAME "internal-sftp" 48 49 typedef struct { 50 u_int num_ports; 51 u_int ports_from_cmdline; 52 int ports[MAX_PORTS]; /* Port number to listen on. */ 53 char *listen_addr; /* Address on which the server listens. */ 54 struct addrinfo *listen_addrs; /* Addresses on which the server listens. */ 55 int address_family; /* Address family used by the server. */ 56 char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */ 57 int num_host_key_files; /* Number of files for host keys. */ 58 char *host_cert_files[MAX_HOSTCERTS]; /* Files containing host certs. */ 59 int num_host_cert_files; /* Number of files for host certs. */ 60 char *pid_file; /* Where to put our pid */ 61 int server_key_bits;/* Size of the server key. */ 62 int login_grace_time; /* Disconnect if no auth in this time 63 * (sec). */ 64 int key_regeneration_time; /* Server key lifetime (seconds). */ 65 int permit_root_login; /* PERMIT_*, see above */ 66 int ignore_rhosts; /* Ignore .rhosts and .shosts. */ 67 int ignore_root_rhosts; /* Ignore .rhosts and .shosts for root; 68 defaults to ignore_rhosts if not 69 given. */ 70 int ignore_user_known_hosts; /* Ignore ~/.ssh/known_hosts 71 * for RhostsRsaAuth */ 72 int print_motd; /* If true, print /etc/motd. */ 73 int print_lastlog; /* If true, print lastlog */ 74 int x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */ 75 int x11_display_offset; /* What DISPLAY number to start 76 * searching at */ 77 int x11_use_localhost; /* If true, use localhost for fake X11 server. */ 78 char *xauth_location; /* Location of xauth program */ 79 int strict_modes; /* If true, require string home dir modes. */ 80 int tcp_keep_alive; /* If true, set SO_KEEPALIVE. */ 81 char *ciphers; /* Supported SSH2 ciphers. */ 82 char *macs; /* Supported SSH2 macs. */ 83 int protocol; /* Supported protocol versions. */ 84 int gateway_ports; /* If true, allow remote connects to forwarded ports. */ 85 SyslogFacility log_facility; /* Facility for system logging. */ 86 LogLevel log_level; /* Level for system logging. */ 87 int rhosts_rsa_authentication; /* If true, permit rhosts RSA 88 * authentication. */ 89 int hostbased_authentication; /* If true, permit ssh2 hostbased auth */ 90 int hostbased_uses_name_from_packet_only; /* experimental */ 91 int rsa_authentication; /* If true, permit RSA authentication. */ 92 int pubkey_authentication; /* If true, permit ssh2 pubkey authentication. */ 93 int kerberos_authentication; /* If true, permit Kerberos 94 * authentication. */ 95 int kerberos_or_local_passwd; /* If true, permit kerberos 96 * and any other password 97 * authentication mechanism, 98 * such as SecurID or 99 * /etc/passwd */ 100 int kerberos_ticket_cleanup; /* If true, destroy ticket 101 * file on logout. */ 102 int kerberos_tgt_passing; /* If true, permit Kerberos TGT 103 * passing. */ 104 int kerberos_get_afs_token; /* If true, try to get AFS token if 105 * authenticated with Kerberos. */ 106 #ifdef AFS 107 int afs_token_passing; /* If true, permit AFS token passing. */ 108 #endif 109 int gss_authentication; /* If true, permit GSSAPI authentication */ 110 int gss_cleanup_creds; /* If true, destroy cred cache on logout */ 111 int password_authentication; /* If true, permit password 112 * authentication. */ 113 int kbd_interactive_authentication; /* If true, permit */ 114 int challenge_response_authentication; 115 int zero_knowledge_password_authentication; 116 /* If true, permit jpake auth */ 117 int permit_empty_passwd; /* If false, do not permit empty 118 * passwords. */ 119 int permit_user_env; /* If true, read ~/.ssh/environment */ 120 int use_login; /* If true, login(1) is used */ 121 int compression; /* If true, compression is allowed */ 122 int allow_tcp_forwarding; 123 int allow_agent_forwarding; 124 u_int num_allow_users; 125 char *allow_users[MAX_ALLOW_USERS]; 126 u_int num_deny_users; 127 char *deny_users[MAX_DENY_USERS]; 128 u_int num_allow_groups; 129 char *allow_groups[MAX_ALLOW_GROUPS]; 130 u_int num_deny_groups; 131 char *deny_groups[MAX_DENY_GROUPS]; 132 133 u_int num_subsystems; 134 char *subsystem_name[MAX_SUBSYSTEMS]; 135 char *subsystem_command[MAX_SUBSYSTEMS]; 136 char *subsystem_args[MAX_SUBSYSTEMS]; 137 138 u_int num_accept_env; 139 char *accept_env[MAX_ACCEPT_ENV]; 140 141 int max_startups_begin; 142 int max_startups_rate; 143 int max_startups; 144 int max_authtries; 145 int max_sessions; 146 char *banner; /* SSH-2 banner message */ 147 int use_dns; 148 int client_alive_interval; /* 149 * poke the client this often to 150 * see if it's still there 151 */ 152 int client_alive_count_max; /* 153 * If the client is unresponsive 154 * for this many intervals above, 155 * disconnect the session 156 */ 157 158 char *authorized_keys_file; /* File containing public keys */ 159 char *authorized_keys_file2; 160 161 int use_pam; /* Enable auth via PAM */ 162 int none_enabled; /* enable NONE cipher switch */ 163 int tcp_rcv_buf_poll; /* poll tcp rcv window in autotuning kernels*/ 164 int hpn_disabled; /* disable hpn functionality. false by default */ 165 int hpn_buffer_size; /* set the hpn buffer size - default 3MB */ 166 167 char *adm_forced_command; 168 169 int permit_tun; 170 #ifdef WITH_LDAP_PUBKEY 171 ldap_opt_t lpk; 172 #endif 173 174 int num_permitted_opens; 175 176 char *chroot_directory; 177 char *revoked_keys_file; 178 char *trusted_user_ca_keys; 179 char *authorized_principals_file; 180 } ServerOptions; 181 182 void initialize_server_options(ServerOptions *); 183 void fill_default_server_options(ServerOptions *); 184 int process_server_config_line(ServerOptions *, char *, const char *, int, 185 int *, const char *, const char *, const char *); 186 void load_server_config(const char *, Buffer *); 187 void parse_server_config(ServerOptions *, const char *, Buffer *, 188 const char *, const char *, const char *); 189 void parse_server_match_config(ServerOptions *, const char *, const char *, 190 const char *); 191 void copy_set_server_options(ServerOptions *, ServerOptions *, int); 192 void dump_config(ServerOptions *); 193 char *derelativise_path(const char *); 194 195 #endif /* SERVCONF_H */ 196