usr/src/cmd/ssh/include/servconf.h

   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  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  15  */
  16
  17 /*      $OpenBSD: servconf.h,v 1.59 2002/07/30 17:03:55 markus Exp $    */
  18
  19 #ifndef _SERVCONF_H
  20 #define _SERVCONF_H
  21
  22 #ifdef __cplusplus
  23 extern "C" {
  24 #endif
  25
  26 #define MAX_PORTS               256     /* Max # ports. */
  27
  28 #define MAX_ALLOW_USERS         256     /* Max # users on allow list. */
  29 #define MAX_DENY_USERS          256     /* Max # users on deny list. */
  30 #define MAX_ALLOW_GROUPS        256     /* Max # groups on allow list. */
  31 #define MAX_DENY_GROUPS         256     /* Max # groups on deny list. */
  32 #define MAX_SUBSYSTEMS          256     /* Max # subsystems. */
  33 #define MAX_HOSTKEYS            256     /* Max # hostkeys. */
  34
  35 /* permit_root_login */
  36 #define PERMIT_NOT_SET          -1
  37 #define PERMIT_NO               0
  38 #define PERMIT_FORCED_ONLY      1
  39 #define PERMIT_NO_PASSWD        2
  40 #define PERMIT_YES              3
  41
  42 /* Magic name for internal sftp-server */
  43 #define INTERNAL_SFTP_NAME      "internal-sftp"
  44 #define _SSH_PAM_SERVICE_PREFIX "sshd"
  45
  46 typedef struct {
  47         u_int   num_ports;
  48         u_int   ports_from_cmdline;
  49         u_short ports[MAX_PORTS];       /* Port number to listen on. */
  50         char   *listen_addr;            /* Address on which the server listens. */
  51         struct addrinfo *listen_addrs;  /* Addresses on which the server listens. */
  52         char   *host_key_files[MAX_HOSTKEYS];   /* Files containing host keys. */
  53         int     num_host_key_files;     /* Number of files for host keys. */
  54         char   *pid_file;       /* Where to put our pid */
  55         int     server_key_bits;/* Size of the server key. */
  56         int     login_grace_time;       /* Disconnect if no auth in this time
  57                                          * (sec). */
  58         int     key_regeneration_time;  /* Server key lifetime (seconds). */
  59         int     permit_root_login;      /* PERMIT_*, see above */
  60         int     ignore_rhosts;  /* Ignore .rhosts and .shosts. */
  61         int     ignore_user_known_hosts;        /* Ignore ~/.ssh/known_hosts
  62                                                  * for RhostsRsaAuth */
  63         int     print_motd;     /* If true, print /etc/motd. */
  64         int     print_lastlog;  /* If true, print lastlog */
  65         int     x11_forwarding; /* If true, permit inet (spoofing) X11 fwd. */
  66         int     x11_display_offset;     /* What DISPLAY number to start
  67                                          * searching at */
  68         int     x11_use_localhost;      /* If true, use localhost for fake X11 server. */
  69         char   *xauth_location; /* Location of xauth program */
  70         int     strict_modes;   /* If true, require string home dir modes. */
  71         int     keepalives;     /* If true, set SO_KEEPALIVE. */
  72         char   *ciphers;        /* Supported SSH2 ciphers. */
  73         char   *macs;           /* Supported SSH2 macs. */
  74         int     protocol;       /* Supported protocol versions. */
  75         int     gateway_ports;  /* If true, allow remote connects to forwarded ports. */
  76         SyslogFacility log_facility;    /* Facility for system logging. */
  77         LogLevel log_level;     /* Level for system logging. */
  78         int     rhosts_authentication;  /* If true, permit rhosts
  79                                          * authentication. */
  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 #ifdef GSSAPI
  87         int     gss_authentication;
  88         int     gss_keyex;
  89         int     gss_store_creds;
  90         int     gss_use_session_ccache;        /* If true, delegated credentials are
  91                                                 * stored in a session specific cache */
  92         int     gss_cleanup_creds;             /* If true, destroy cred cache on logout */
  93 #endif /* GSSAPI */
  94 #if defined(KRB4) || defined(KRB5)
  95         int     kerberos_authentication;        /* If true, permit Kerberos
  96                                                  * authentication. */
  97         int     kerberos_or_local_passwd;       /* If true, permit kerberos
  98                                                  * and any other password
  99                                                  * authentication mechanism,
 100                                                  * such as SecurID or
 101                                                  * /etc/passwd */
 102         int     kerberos_ticket_cleanup;        /* If true, destroy ticket
 103                                                  * file on logout. */
 104 #endif
 105 #if defined(AFS) || defined(KRB5)
 106         int     kerberos_tgt_passing;   /* If true, permit Kerberos TGT
 107                                          * passing. */
 108 #endif
 109 #ifdef AFS
 110         int     afs_token_passing;      /* If true, permit AFS token passing. */
 111 #endif
 112         int     password_authentication;        /* If true, permit password
 113                                                  * authentication. */
 114
 115         int     kbd_interactive_authentication;
 116         int     challenge_response_authentication;
 117         int     pam_authentication_via_kbd_int;
 118
 119         int     permit_empty_passwd;    /* If false, do not permit empty
 120                                          * passwords. */
 121         int     permit_user_env;        /* If true, read ~/.ssh/environment */
 122         int     use_login;      /* If true, login(1) is used */
 123         int     compression;    /* If true, compression is allowed */
 124         int     allow_tcp_forwarding;
 125
 126         u_int   num_allow_users;
 127         char   *allow_users[MAX_ALLOW_USERS];
 128         u_int   num_deny_users;
 129         char   *deny_users[MAX_DENY_USERS];
 130         u_int   num_allow_groups;
 131         char   *allow_groups[MAX_ALLOW_GROUPS];
 132         u_int   num_deny_groups;
 133         char   *deny_groups[MAX_DENY_GROUPS];
 134
 135         u_int   num_subsystems;
 136         char   *subsystem_name[MAX_SUBSYSTEMS];
 137         char   *subsystem_command[MAX_SUBSYSTEMS];
 138         char   *subsystem_args[MAX_SUBSYSTEMS];
 139
 140         int     max_startups_begin;
 141         int     max_startups_rate;
 142         int     max_startups;
 143         char   *banner;                 /* SSH-2 banner message */
 144         int     verify_reverse_mapping; /* cross-check ip and dns */
 145         int     client_alive_interval;  /*
 146                                          * poke the client this often to
 147                                          * see if it's still there
 148                                          */
 149         int     client_alive_count_max; /*
 150                                          * If the client is unresponsive
 151                                          * for this many intervals above,
 152                                          * disconnect the session
 153                                          */
 154
 155         char   *authorized_keys_file;   /* File containing public keys */
 156         char   *authorized_keys_file2;
 157
 158         int     max_auth_tries;
 159         int     max_auth_tries_log;
 160
 161         int     max_init_auth_tries;        /* SUNW: /etc/default/login */
 162         int     max_init_auth_tries_log;    /* SUNW: /etc/default/login */
 163
 164         int     lookup_client_hostnames;
 165         int     use_openssl_engine;
 166         char   *chroot_directory;
 167         char   *pre_userauth_hook;
 168         char   *pam_service_prefix;
 169         char   *pam_service_name;
 170
 171 }       ServerOptions;
 172
 173 void     initialize_server_options(ServerOptions *);
 174 void     fill_default_server_options(ServerOptions *);
 175 int      process_server_config_line(ServerOptions *, char *, const char *, int,
 176              int *, const char *, const char *, const char *);
 177 void     load_server_config(const char *, Buffer *);
 178 void     parse_server_config(ServerOptions *, const char *, Buffer *,
 179              const char *, const char *, const char *);
 180 void     parse_server_match_config(ServerOptions *, const char *, const char *,
 181              const char *);
 182 void     copy_set_server_options(ServerOptions *, ServerOptions *, int);
 183 int      chroot_requested(char *chroot_directory);
 184
 185 #ifdef __cplusplus
 186 }
 187 #endif
 188
 189
 190 #endif  /* _SERVCONF_H */