ntp/ntpd/refclock_nmea.c

140  * DATE/TIME are standard date/time strings in UTC time scale
143  * date spec.
172 #define NMEA_GPZDA	3	/* date/time */
206 /* date formats we support */
243 		u_int malformed;  /* Bad checksum, invalid date or time */
311 /* calendar / date helpers */
367 	struct calendar date;
373 	 * date cannot be stablished, at least use the start of GPS
376 	 * margin for the fuzziness of the build date, which is in an
378 	if (ntpcal_get_build_date(&date))
379 		g_gpsMinBase = ntpcal_date_to_rd(&date) - 2;
386 	ntpcal_rd_to_date(&date, g_gpsMinBase);
387 	g_gpsMinYear  = date.year;
773  * + it parses the time and date data from the NMEA data string and
774  *   augments the missing bits. (century in dat, whole date, ...)
799 	struct calendar date;	/* to keep & convert the time stamp */
802 	/* results of sentence/date/time parsing */
811 	ZERO(date);
930 		rc_time	 = parse_time(&date, &tofs.tv_nsec, &rdata, 1);
932 		rc_date	 = parse_date(&date, &rdata, 9, DATE_1_DDMMYY)
933 			&& unfold_century(&date, rd_timestamp.l_ui);
940 		rc_time	 = parse_time(&date, &tofs.tv_nsec, &rdata, 1);
942 		rc_date	 = unfold_day(&date, rd_timestamp.l_ui);
949 		rc_time	 = parse_time(&date, &tofs.tv_nsec, &rdata, 5);
951 		rc_date	 = unfold_day(&date, rd_timestamp.l_ui);
957 		/* No quality.	Assume best, fetch time & full date */
959 		rc_time	 = parse_time(&date, &tofs.tv_nsec, &rdata, 1);
960 		rc_date	 = parse_date(&date, &rdata, 2, DATE_3_DDMMYYYY);
964 		/* Check quality byte, fetch time & full date */
965 		rc_time	 = parse_time(&date, &tofs.tv_nsec, &rdata, 1);
966 		rc_date	 = parse_date(&date, &rdata, 2, DATE_3_DDMMYYYY);
972 		/* get date, time, qualifier and GPS weektime. We need
973 		 * date and time-of-day for the century fix, so we read
977 		        && parse_date(&date, &rdata, 3, DATE_1_DDMMYY);
978 		rc_time  = parse_time(&date, &tofs.tv_nsec, &rdata, 4);
981 		        && gpsfix_century(&date, &gpsw, &up->century_cache);
996 	/* Check sanity of date. */
997 	else if (rc_date == 0) {/* no date or conversion error? */
1017 		date.year, date.month, date.monthday,
1018 		date.hour, date.minute, date.second));
1033 	rd_reftime = eval_gps_time(peer, &date, &tofs, &rd_timestamp);
1521  * Parse a date string from an NMEA sentence. This could either be a
1522  * partial date in DDMMYY format in one field, or DD,MM,YYYY full date
1524  * checking to make sure the date string was consistent.
1550 			DPRINTF(1, ("nmea: invalid date code: '%.6s'\n",
1559 			DPRINTF(1, ("nmea: invalid date code: '%.10s'\n",
1572 		DPRINTF(1, ("nmea: invalid date spec (YMD) %04u:%02u:%02u\n",
1628  * This function is used for NMEA sentences that contain no date
1632  * necessary date information.
1671  * battery-backup clock and start with a date that is typically years in
1709  * A brute-force analysis (that is, test for every date) shows that a
1718  * Note: This function needs a full date&time spec on input due to the
1815 	/* So we do not trust the GPS receiver to deliver a correct date
1816 	 * due to the GPS epoch changes. We map the date from the