readconf.h

   1 /* $OpenBSD: readconf.h,v 1.71 2006/08/03 03:34:42 deraadt 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  * Functions for reading the configuration file.
   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 READCONF_H
  17 #define READCONF_H
  18
  19 /* Data structure for representing a forwarding request. */
  20
  21 typedef struct {
  22         char     *listen_host;          /* Host (address) to listen on. */
  23         u_short   listen_port;          /* Port to forward. */
  24         char     *connect_host;         /* Host to connect. */
  25         u_short   connect_port;         /* Port to connect on connect_host. */
  26 }       Forward;
  27 /* Data structure for representing option data. */
  28
  29 #define MAX_SEND_ENV    256
  30
  31 typedef struct {
  32         int     forward_agent;  /* Forward authentication agent. */
  33         int     forward_x11;    /* Forward X11 display. */
  34         int     forward_x11_trusted;    /* Trust Forward X11 display. */
  35         int     exit_on_forward_failure;        /* Exit if bind(2) fails for -L/-R */
  36         char   *xauth_location; /* Location for xauth program */
  37         int     gateway_ports;  /* Allow remote connects to forwarded ports. */
  38         int     use_privileged_port;    /* Don't use privileged port if false. */
  39         int     rhosts_rsa_authentication;      /* Try rhosts with RSA
  40                                                  * authentication. */
  41         int     rsa_authentication;     /* Try RSA authentication. */
  42         int     pubkey_authentication;  /* Try ssh2 pubkey authentication. */
  43         int     hostbased_authentication;       /* ssh2's rhosts_rsa */
  44         int     challenge_response_authentication;
  45                                         /* Try S/Key or TIS, authentication. */
  46         int     gss_authentication;     /* Try GSS authentication */
  47         int     gss_deleg_creds;        /* Delegate GSS credentials */
  48         int     password_authentication;        /* Try password
  49                                                  * authentication. */
  50         int     kbd_interactive_authentication; /* Try keyboard-interactive auth. */
  51         char    *kbd_interactive_devices; /* Keyboard-interactive auth devices. */
  52         int     batch_mode;     /* Batch mode: do not ask for passwords. */
  53         int     check_host_ip;  /* Also keep track of keys for IP address */
  54         int     strict_host_key_checking;       /* Strict host key checking. */
  55         int     compression;    /* Compress packets in both directions. */
  56         int     compression_level;      /* Compression level 1 (fast) to 9
  57                                          * (best). */
  58         int     tcp_keep_alive; /* Set SO_KEEPALIVE. */
  59         LogLevel log_level;     /* Level for logging. */
  60
  61         int     port;           /* Port to connect. */
  62         int     address_family;
  63         int     connection_attempts;    /* Max attempts (seconds) before
  64                                          * giving up */
  65         int     connection_timeout;     /* Max time (seconds) before
  66                                          * aborting connection attempt */
  67         int     number_of_password_prompts;     /* Max number of password
  68                                                  * prompts. */
  69         int     cipher;         /* Cipher to use. */
  70         char   *ciphers;        /* SSH2 ciphers in order of preference. */
  71         char   *macs;           /* SSH2 macs in order of preference. */
  72         char   *hostkeyalgorithms;      /* SSH2 server key types in order of preference. */
  73         int     protocol;       /* Protocol in order of preference. */
  74         char   *hostname;       /* Real host to connect. */
  75         char   *host_key_alias; /* hostname alias for .ssh/known_hosts */
  76         char   *proxy_command;  /* Proxy command for connecting the host. */
  77         char   *user;           /* User to log in as. */
  78         int     escape_char;    /* Escape character; -2 = none */
  79
  80         char   *system_hostfile;/* Path for /etc/ssh/ssh_known_hosts. */
  81         char   *user_hostfile;  /* Path for $HOME/.ssh/known_hosts. */
  82         char   *system_hostfile2;
  83         char   *user_hostfile2;
  84         char   *preferred_authentications;
  85         char   *bind_address;   /* local socket address for connection to sshd */
  86         char   *smartcard_device; /* Smartcard reader device */
  87         int     verify_host_key_dns;    /* Verify host key using DNS */
  88
  89         int     num_identity_files;     /* Number of files for RSA/DSA identities. */
  90         char   *identity_files[SSH_MAX_IDENTITY_FILES];
  91         Key    *identity_keys[SSH_MAX_IDENTITY_FILES];
  92
  93         /* Local TCP/IP forward requests. */
  94         int     num_local_forwards;
  95         Forward local_forwards[SSH_MAX_FORWARDS_PER_DIRECTION];
  96
  97         /* Remote TCP/IP forward requests. */
  98         int     num_remote_forwards;
  99         Forward remote_forwards[SSH_MAX_FORWARDS_PER_DIRECTION];
 100         int     clear_forwardings;
 101
 102         int     enable_ssh_keysign;
 103         int     rekey_limit;
 104         int     no_host_authentication_for_localhost;
 105         int     identities_only;
 106         int     server_alive_interval;
 107         int     server_alive_count_max;
 108
 109         int     num_send_env;
 110         char   *send_env[MAX_SEND_ENV];
 111
 112         char    *control_path;
 113         int     control_master;
 114
 115         int     hash_known_hosts;
 116
 117         int     tun_open;       /* tun(4) */
 118         int     tun_local;      /* force tun device (optional) */
 119         int     tun_remote;     /* force tun device (optional) */
 120
 121         char    *local_command;
 122         int     permit_local_command;
 123
 124 }       Options;
 125
 126 #define SSHCTL_MASTER_NO        0
 127 #define SSHCTL_MASTER_YES       1
 128 #define SSHCTL_MASTER_AUTO      2
 129 #define SSHCTL_MASTER_ASK       3
 130 #define SSHCTL_MASTER_AUTO_ASK  4
 131
 132 void     initialize_options(Options *);
 133 void     fill_default_options(Options *);
 134 int      read_config_file(const char *, const char *, Options *, int);
 135 int      parse_forward(Forward *, const char *);
 136
 137 int
 138 process_config_line(Options *, const char *, char *, const char *, int, int *);
 139
 140 void     add_local_forward(Options *, const Forward *);
 141 void     add_remote_forward(Options *, const Forward *);
 142
 143 #endif                          /* READCONF_H */