/*
 * Copyright (C) 1999, 2000  Internet Software Consortium.
 * 
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

/* $Id: time.h,v 1.6 2000/06/22 21:56:14 tale Exp $ */

#ifndef DNS_TIME_H
#define DNS_TIME_H 1

/***
 ***	Imports
 ***/

#include <isc/buffer.h>
#include <isc/lang.h>

ISC_LANG_BEGINDECLS

/***
 ***	Functions
 ***/

isc_result_t
dns_time64_fromtext(char *source, isc_int64_t *target);
/*
 * Convert a date and time in YYYYMMDDHHMMSS text format at 'source'
 * into to a 64-bit count of seconds since Jan 1 1970 0:00 GMT.  
 * Store the count at 'target'.
 */ 

isc_result_t
dns_time32_fromtext(char *source, isc_uint32_t *target);
/*
 * Like dns_time64_fromtext, but returns the second count modulo 2^32
 * as per RFC2535.
 */
	

isc_result_t
dns_time64_totext(isc_int64_t value, isc_buffer_t *target);
/*
 * Convert a 64-bit count of seconds since Jan 1 1970 0:00 GMT into 
 * a YYYYMMDDHHMMSS text representation and append it to 'target'.
 */

isc_result_t
dns_time32_totext(isc_uint32_t value, isc_buffer_t *target);
/*
 * Like dns_time64_totext, but for a 32-bit cyclic time value.
 * Of those dates whose counts of seconds since Jan 1 1970 0:00 GMT
 * are congruent with 'value' modulo 2^32, the one closest to the
 * current date is chosen.
 */ 

ISC_LANG_ENDDECLS

#endif /* DNS_TIME_H */
