/*      $NetBSD: clk_dcf7000.c,v 1.7 2024/08/18 20:47:17 christos Exp $ */

/*
* /src/NTP/ntp4-dev/libparse/clk_dcf7000.c,v 4.10 2005/04/16 17:32:10 kardel RELEASE_20050508_A
*
* clk_dcf7000.c,v 4.10 2005/04/16 17:32:10 kardel RELEASE_20050508_A
*
* ELV DCF7000 module
*
* Copyright (c) 1995-2005 by Frank Kardel <kardel <AT> ntp.org>
* Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universitaet Erlangen-Nuernberg, Germany
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#if defined(REFCLOCK) && defined(CLOCK_PARSE) && defined(CLOCK_DCF7000)

#include "ntp_fp.h"
#include "ntp_unixtime.h"
#include "ntp_calendar.h"

#include "parse.h"

#ifndef PARSESTREAM
#include "ntp_stdlib.h"
#include <stdio.h>
#else
#include "sys/parsestreams.h"
extern int printf (const char *, ...);
#endif

static struct format dcf7000_fmt =
{                               /* ELV DCF7000 */
       {
               {  6, 2}, {  3, 2}, {  0, 2},
               { 12, 2}, { 15, 2}, { 18, 2},
               {  9, 2}, { 21, 2},
       },
       (const unsigned char *)"  -  -  -  -  -  -  -  \r",
       0
};

static parse_cvt_fnc_t cvt_dcf7000;
static parse_inp_fnc_t inp_dcf7000;

clockformat_t clock_dcf7000 =
{
 inp_dcf7000,                  /* DCF7000 input handling */
 cvt_dcf7000,                  /* ELV DCF77 conversion */
 0,                            /* no direct PPS monitoring */
 (void *)&dcf7000_fmt,         /* conversion configuration */
 "ELV DCF7000",                /* ELV clock */
 24,                           /* string buffer */
 0                             /* no private data (complete packets) */
};

/*
* parse_cvt_fnc_t cvt_dcf7000
*
* convert dcf7000 type format
*/
static u_long
cvt_dcf7000(
           unsigned char *buffer,
           int            size,
           struct format *format,
           clocktime_t   *clock_time,
           void          *local
           )
{
       if (!Strok(buffer, format->fixed_string))
       {
               return CVT_NONE;
       }
       else
       {
               if (Stoi(&buffer[format->field_offsets[O_DAY].offset], &clock_time->day,
                        format->field_offsets[O_DAY].length) ||
                   Stoi(&buffer[format->field_offsets[O_MONTH].offset], &clock_time->month,
                        format->field_offsets[O_MONTH].length) ||
                   Stoi(&buffer[format->field_offsets[O_YEAR].offset], &clock_time->year,
                        format->field_offsets[O_YEAR].length) ||
                   Stoi(&buffer[format->field_offsets[O_HOUR].offset], &clock_time->hour,
                        format->field_offsets[O_HOUR].length) ||
                   Stoi(&buffer[format->field_offsets[O_MIN].offset], &clock_time->minute,
                        format->field_offsets[O_MIN].length) ||
                   Stoi(&buffer[format->field_offsets[O_SEC].offset], &clock_time->second,
                        format->field_offsets[O_SEC].length))
               {
                       return CVT_FAIL|CVT_BADFMT;
               }
               else
               {
                       unsigned char *f = &buffer[format->field_offsets[O_FLAGS].offset];
                       long flags;

                       clock_time->flags = 0;
                       clock_time->usecond = 0;

                       if (Stoi(f, &flags, format->field_offsets[O_FLAGS].length))
                       {
                               return CVT_FAIL|CVT_BADFMT;
                       }
                       else
                       {
                               if (flags & 0x1)
                                   clock_time->utcoffset = -2*60*60;
                               else
                                   clock_time->utcoffset = -1*60*60;

                               if (flags & 0x2)
                                   clock_time->flags |= PARSEB_ANNOUNCE;

                               if (flags & 0x4)
                                   clock_time->flags |= PARSEB_NOSYNC;
                       }
                       return CVT_OK;
               }
       }
}

/*
* parse_inp_fnc_t inp_dcf700
*
* grab data from input stream
*/
static u_long
inp_dcf7000(
         parse_t      *parseio,
         char         ch,
         timestamp_t  *tstamp
         )
{
       unsigned int rtc;

       parseprintf(DD_PARSE, ("inp_dcf7000(0x%p, 0x%x, ...)\n", (void*)parseio, ch));

       switch (ch)
       {
       case '\r':
               parseprintf(DD_PARSE, ("inp_dcf7000: EOL seen\n"));
               parseio->parse_dtime.parse_stime = *tstamp; /* collect timestamp */
               if ((rtc = parse_addchar(parseio, ch)) == PARSE_INP_SKIP)
                       return parse_end(parseio);
               else
                       return rtc;

       default:
               return parse_addchar(parseio, ch);
       }
}

#else /* not (REFCLOCK && CLOCK_PARSE && CLOCK_DCF7000) */
NONEMPTY_TRANSLATION_UNIT
#endif /* not (REFCLOCK && CLOCK_PARSE && CLOCK_DCF7000) */

/*
* History:
*
* clk_dcf7000.c,v
* Revision 4.10  2005/04/16 17:32:10  kardel
* update copyright
*
* Revision 4.9  2004/11/14 15:29:41  kardel
* support PPSAPI, upgrade Copyright to Berkeley style
*
* Revision 4.6  1999/11/28 09:13:49  kardel
* RECON_4_0_98F
*
* Revision 4.5  1998/06/14 21:09:34  kardel
* Sun acc cleanup
*
* Revision 4.4  1998/06/13 12:01:59  kardel
* fix SYSV clock name clash
*
* Revision 4.3  1998/06/12 15:22:27  kardel
* fix prototypes
*
* Revision 4.2  1998/06/12 09:13:24  kardel
* conditional compile macros fixed
* printf prototype
*
* Revision 4.1  1998/05/24 09:39:51  kardel
* implementation of the new IO handling model
*
* Revision 4.0  1998/04/10 19:45:28  kardel
* Start 4.0 release version numbering
*
* from V3 3.18 log info deleted 1998/04/11 kardel
*/

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