/*
 * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
 * of Technology
 * For copying and distribution information, please see the file
 * <Copyright.MIT>.
 *
 *	from: kstash.c,v 4.0 89/01/23 09:45:43 jtkohl Exp $
 *	$Id$
 */

#if 0
#ifndef	lint
static char rcsid[] =
"$Id$";
#endif	lint
#endif

#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <signal.h>
#include <sgtty.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/file.h>

#include <krb.h>
#include <des.h>
#include <klog.h>
#include <prot.h>
#include <krb_db.h>
#include <kdc.h>

/* change this later, but krblib_dbm needs it for now */
char   *progname;

static C_Block master_key;
static Key_schedule master_key_schedule;
int     debug;
static int kfile;
static void clear_secrets();

int
main(argc, argv)
    int     argc;
    char  **argv;
{
    long    n;
    if ((n = kerb_init())) {
	fprintf(stderr, "Kerberos db and cache init failed = %ld\n", n);
	exit(1);
    }

    if (kdb_get_master_key (TRUE, master_key, master_key_schedule) != 0) {
      fprintf (stderr, "%s: Couldn't read master key.\n", argv[0]);
      fflush (stderr);
      clear_secrets();
      exit (-1);
    }

    if (kdb_verify_master_key (master_key, master_key_schedule, stderr) < 0) {
      clear_secrets();
      exit (-1);
    }

    kfile = open(MKEYFILE, O_TRUNC | O_RDWR | O_CREAT, 0600);
    if (kfile < 0) {
	clear_secrets();
	fprintf(stderr, "\n\07\07%s: Unable to open master key file\n",
		argv[0]);
	exit(1);
    }
    if (write(kfile, (char *) master_key, 8) < 0) {
	clear_secrets();
	fprintf(stderr, "\n%s: Write I/O error on master key file\n",
		argv[0]);
	exit(1);
    }
    (void) close(kfile);
    clear_secrets();
    return(0);
}

static void
clear_secrets()
{
    bzero(master_key_schedule, sizeof(master_key_schedule));
    bzero(master_key, sizeof(master_key));
}