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i bet a lot of people didn't know what ssh 1.2.16 had a nice license.
well, except for the patent issues.  someone in sweden (forget their
name at the moment) cleaned out most of the patented code, and now
this code removes rsa code.  when this is done, it will link against
libssl, but the work isn't completely done yet.  then we need to bring
this up to modern days, featurewise.

/*

servconf.h

Author: Tatu Ylonen <ylo@cs.hut.fi>

Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                   All rights reserved

Created: Mon Aug 21 15:35:03 1995 ylo

Definitions for server configuration data and for the functions reading it.

*/

/* RCSID("$Id: servconf.h,v 1.1 1999/09/26 20:53:37 deraadt Exp $"); */

#ifndef SERVCONF_H
#define SERVCONF_H

#define MAX_ALLOW_HOSTS		256 /* Max # hosts on allow list. */
#define MAX_DENY_HOSTS		256 /* Max # hosts on deny list. */

typedef struct
{
  int port;			/* Port number to listen on. */
  struct in_addr listen_addr;	/* Address on which the server listens. */
  char *host_key_file;		/* File containing host key. */
  char *random_seed_file;	/* File containing random seed. */
  int server_key_bits;		/* Size of the server key. */
  int login_grace_time;		/* Disconnect if no auth in this time (sec). */
  int key_regeneration_time;	/* Server key lifetime (seconds). */
  int permit_root_login;	/* If true, permit root login. */
  int ignore_rhosts;		/* Ignore .rhosts and .shosts. */
  int quiet_mode;		/* If true, don't log anything but fatals. */
  int fascist_logging;		/* Perform very verbose logging. */
  int print_motd;		/* If true, print /etc/motd. */
  int x11_forwarding;		/* If true, permit inet (spoofing) X11 fwd. */
  int strict_modes;		/* If true, require string home dir modes. */
  int keepalives;		/* If true, set SO_KEEPALIVE. */
  SyslogFacility log_facility;	/* Facility for system logging. */
  int rhosts_authentication;	/* If true, permit rhosts authentication. */
  int rhosts_rsa_authentication;/* If true, permit rhosts RSA authentication.*/
  int rsa_authentication;	/* If true, permit RSA authentication. */
#ifdef KRB4
  int kerberos_authentication;	/* If true, permit Kerberos authentication. */
  int kerberos_or_local_passwd;
#endif
#if defined(KRB4) || defined(AFS)
  int kerberos_ticket_cleanup;	/* If true, destroy ticket file on logout. */
#endif
#ifdef KERBEROS_TGT_PASSING
  int kerberos_tgt_passing;	/* If true, permit Kerberos tgt passing. */
#endif
#ifdef AFS
  int afs_token_passing;	/* If true, permit AFS token passing. */
#endif
  int password_authentication;  /* If true, permit password authentication. */
  int permit_empty_passwd;      /* If false, do not permit empty passwords. */
  unsigned int num_allow_hosts;
  char *allow_hosts[MAX_ALLOW_HOSTS];
  unsigned int num_deny_hosts;
  char *deny_hosts[MAX_DENY_HOSTS];
} ServerOptions;

/* Initializes the server options to special values that indicate that they
   have not yet been set. */
void initialize_server_options(ServerOptions *options);

/* Reads the server configuration file.  This only sets the values for those
   options that have the special value indicating they have not been set. */
void read_server_config(ServerOptions *options, const char *filename);

/* Sets values for those values that have not yet been set. */
void fill_default_server_options(ServerOptions *options);

#endif /* SERVCONF_H */