contrib/bind-9.2.4rc7/lib/dns/include/dns/time.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: time.h,v 1.9.2.1 2004/03/09 06:11:23 marka Exp $ */
  19
  20 #ifndef DNS_TIME_H
  21 #define DNS_TIME_H 1
  22
  23 /***
  24  ***    Imports
  25  ***/
  26
  27 #include <isc/buffer.h>
  28 #include <isc/lang.h>
  29
  30 ISC_LANG_BEGINDECLS
  31
  32 /***
  33  ***    Functions
  34  ***/
  35
  36 isc_result_t
  37 dns_time64_fromtext(char *source, isc_int64_t *target);
  38 /*
  39  * Convert a date and time in YYYYMMDDHHMMSS text format at 'source'
  40  * into to a 64-bit count of seconds since Jan 1 1970 0:00 GMT.
  41  * Store the count at 'target'.
  42  */
  43
  44 isc_result_t
  45 dns_time32_fromtext(char *source, isc_uint32_t *target);
  46 /*
  47  * Like dns_time64_fromtext, but returns the second count modulo 2^32
  48  * as per RFC2535.
  49  */
  50
  51
  52 isc_result_t
  53 dns_time64_totext(isc_int64_t value, isc_buffer_t *target);
  54 /*
  55  * Convert a 64-bit count of seconds since Jan 1 1970 0:00 GMT into
  56  * a YYYYMMDDHHMMSS text representation and append it to 'target'.
  57  */
  58
  59 isc_result_t
  60 dns_time32_totext(isc_uint32_t value, isc_buffer_t *target);
  61 /*
  62  * Like dns_time64_totext, but for a 32-bit cyclic time value.
  63  * Of those dates whose counts of seconds since Jan 1 1970 0:00 GMT
  64  * are congruent with 'value' modulo 2^32, the one closest to the
  65  * current date is chosen.
  66  */
  67
  68 ISC_LANG_ENDDECLS
  69
  70 #endif /* DNS_TIME_H */