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/* chkpassword.c - check the password */

#ifndef	lint
static char *rcsid = "$Header$";
#endif

/* 
 * $Header$
 *
 *
 * $Log$
 * Revision 1.1  1994/06/10 03:27:03  eichin
 * autoconfed isode for kerberos work
 *
 * Revision 1.1  94/06/10  03:15:30  eichin
 * autoconfed isode for kerberos work
 * 
 * Revision 1.1  1994/05/31 20:33:35  eichin
 * reduced-isode release from /mit/isode/isode-subset/src
 *
 * Revision 8.0  91/07/17  12:17:50  isode
 * Release 7.0
 * 
 * 
 */

/*
 *				  NOTICE
 *
 *    Acquisition, use, and distribution of this module and related
 *    materials are subject to the restrictions of a license agreement.
 *    Consult the Preface in the User's Manual for the full terms of
 *    this agreement.
 *
 */


/* LINTLIBRARY */

#include <stdio.h>
#include "general.h"
#include "manifest.h"


char   *crypt ();


#ifdef	KRB_PASSWD
#include <krb.h>
#endif

/* L.McLoughlin added kerberos passwd checking - based on original
 * code from xnlock by S. Lacey.
 * Takes the username, the password from the password file, and the passwd
 * the user is trying to use.
 * Returns 1 if the passwd matches otherwise 0.
 */

#ifndef	KRB_PASSWD
/* ARGSUSED */
#endif

int	chkpassword ( usrname, pwpass, usrpass )
char   *usrname;
char   *pwpass;
char   *usrpass;
{
#ifdef	KRB_PASSWD
	char realm[REALM_SZ];
	int krbval;

	/* 
	 * check to see if the passwd is `*krb*'
	 * if it is, use kerberos
	 */

	if (strcmp(pwpass, "*krb*") == 0) {
		/*
		 * use kerberos, first of all find the realm
		 */
		if (krb_get_lrealm(realm, 1) != KSUCCESS) {
			(void) strncpy(realm, KRB_REALM, sizeof(realm));
		}

		/*
		 * now check the passwd
		 */
		krbval = krb_get_pw_in_tkt(usrname, "",
					   realm, "krbtgt",
					   realm,
					   DEFAULT_TKT_LIFE, usrpass);

		return (krbval == INTK_OK);;
	}
#endif

	/*
	 * use passwd file password
	 */
	return (strcmp(crypt(usrpass, pwpass), pwpass) == 0);
}