From a85d9ae25e8e8696677bc30feb6eaf7fc150e529 Mon Sep 17 00:00:00 2001 From: roberto Date: Mon, 4 Nov 2002 19:36:11 +0000 Subject: Virgin import of ntpd 4.1.1b --- contrib/ntp/ntpd/refclock_neoclock4x.c | 864 +++++++++++++++++++++++++++++++++ 1 file changed, 864 insertions(+) create mode 100644 contrib/ntp/ntpd/refclock_neoclock4x.c (limited to 'contrib/ntp/ntpd/refclock_neoclock4x.c') diff --git a/contrib/ntp/ntpd/refclock_neoclock4x.c b/contrib/ntp/ntpd/refclock_neoclock4x.c new file mode 100644 index 0000000..3b64017 --- /dev/null +++ b/contrib/ntp/ntpd/refclock_neoclock4x.c @@ -0,0 +1,864 @@ +/* + * + * refclock_neoclock4x.c + * - NeoClock4X driver for DCF77 or FIA Timecode + * + * Date: 2002-04-27 1.0 + * + * see http://www.linum.com/redir/jump/id=neoclock4x&action=redir + * for details about the NeoClock4X device + * + * Copyright (C) 2002 by Linum Software GmbH + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#if defined(REFCLOCK) && (defined(CLOCK_NEOCLOCK4X)) + +#include +#include +#include +#include +#include +#include + +#include "ntpd.h" +#include "ntp_io.h" +#include "ntp_control.h" +#include "ntp_refclock.h" +#include "ntp_unixtime.h" +#include "ntp_stdlib.h" + +#if defined HAVE_SYS_MODEM_H +# include +# define TIOCMSET MCSETA +# define TIOCMGET MCGETA +# define TIOCM_RTS MRTS +#endif + +#ifdef HAVE_TERMIOS_H +# ifdef TERMIOS_NEEDS__SVID3 +# define _SVID3 +# endif +# include +# ifdef TERMIOS_NEEDS__SVID3 +# undef _SVID3 +# endif +#endif + +#ifdef HAVE_SYS_IOCTL_H +# include +#endif + +#define NEOCLOCK4X_TIMECODELEN 37 + +#define NEOCLOCK4X_OFFSET_SERIAL 3 +#define NEOCLOCK4X_OFFSET_RADIOSIGNAL 9 +#define NEOCLOCK4X_OFFSET_DAY 12 +#define NEOCLOCK4X_OFFSET_MONTH 14 +#define NEOCLOCK4X_OFFSET_YEAR 16 +#define NEOCLOCK4X_OFFSET_HOUR 18 +#define NEOCLOCK4X_OFFSET_MINUTE 20 +#define NEOCLOCK4X_OFFSET_SECOND 22 +#define NEOCLOCK4X_OFFSET_HSEC 24 +#define NEOCLOCK4X_OFFSET_DOW 26 +#define NEOCLOCK4X_OFFSET_TIMESOURCE 28 +#define NEOCLOCK4X_OFFSET_DSTSTATUS 29 +#define NEOCLOCK4X_OFFSET_QUARZSTATUS 30 +#define NEOCLOCK4X_OFFSET_ANTENNA1 31 +#define NEOCLOCK4X_OFFSET_ANTENNA2 33 +#define NEOCLOCK4X_OFFSET_CRC 35 + +struct neoclock4x_unit { + l_fp laststamp; /* last receive timestamp */ + short unit; /* NTP refclock unit number */ + u_long polled; /* flag to detect noreplies */ + char leap_status; /* leap second flag */ + int recvnow; + + char firmware[80]; + char serial[7]; + char radiosignal[4]; + char timesource; + char dststatus; + char quarzstatus; + int antenna1; + int antenna2; + int utc_year; + int utc_month; + int utc_day; + int utc_hour; + int utc_minute; + int utc_second; + int utc_msec; +}; + +static int neoclock4x_start P((int, struct peer *)); +static void neoclock4x_shutdown P((int, struct peer *)); +static void neoclock4x_receive P((struct recvbuf *)); +static void neoclock4x_poll P((int, struct peer *)); +static void neoclock4x_control P((int, struct refclockstat *, struct refclockstat *, struct peer *)); + +static int neol_atoi_len P((const char str[], int *, int)); +static int neol_hexatoi_len P((const char str[], int *, int)); +static void neol_jdn_to_ymd P((unsigned long, int *, int *, int *)); +static void neol_localtime P((unsigned long, int* , int*, int*, int*, int*, int*)); +static unsigned long neol_mktime P((int, int, int, int, int, int)); +static void neol_mdelay P((int)); +static int neol_query_firmware P((int, int, char *, int)); + +struct refclock refclock_neoclock4x = { + neoclock4x_start, /* start up driver */ + neoclock4x_shutdown, /* shut down driver */ + neoclock4x_poll, /* transmit poll message */ + neoclock4x_control, + noentry, /* initialize driver (not used) */ + noentry, /* not used */ + NOFLAGS /* not used */ +}; + +static int +neoclock4x_start(int unit, + struct peer *peer) +{ + struct neoclock4x_unit *up; + struct refclockproc *pp; + int fd; + char dev[20]; + int sl232; + struct termios termsettings; + int tries; + + (void) sprintf(dev, "/dev/neoclock4x-%d", unit); + + /* LDISC_STD, LDISC_RAW + * Open serial port. Use CLK line discipline, if available. + */ + fd = refclock_open(dev, B2400, LDISC_CLK); + if(fd <= 0) + { + return (0); + } + +#if defined(TIOCMSET) && (defined(TIOCM_RTS) || defined(CIOCM_RTS)) + /* turn on RTS, and DTR for power supply */ + /* NeoClock4x is powered from serial line */ + if(ioctl(fd, TIOCMGET, (caddr_t)&sl232) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't query RTS/DTR state: %m", unit); + } +#ifdef TIOCM_RTS + sl232 = sl232 | TIOCM_DTR | TIOCM_RTS; /* turn on RTS, and DTR for power supply */ +#else + sl232 = sl232 | CIOCM_DTR | CIOCM_RTS; /* turn on RTS, and DTR for power supply */ +#endif + if(ioctl(fd, TIOCMSET, (caddr_t)&sl232) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't set RTS/DTR to power neoclock4x: %m", unit); + } + + if(ioctl(fd, TCGETS, (caddr_t)&termsettings) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't query serial port settings: %m", unit); + } + + /* 2400 Baud mit 8N2 */ + termsettings.c_cflag &= ~PARENB; + termsettings.c_cflag |= CSTOPB; + termsettings.c_cflag &= ~CSIZE; + termsettings.c_cflag |= CS8; + + if(ioctl(fd, TCSETS, &termsettings) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't set serial port to 2400 8N2: %m", unit); + } +#else + msyslog(LOG_EMERG, "NeoClock4X(%d): OS interface is incapable of setting DTR/RTS to power NeoClock4X", + unit); +#endif + + up = (struct neoclock4x_unit *) emalloc(sizeof(struct neoclock4x_unit)); + if(!(up)) + { + msyslog(LOG_ERR, "NeoClock4X(%d): can't allocate memory for: %m",unit); + (void) close(fd); + return (0); + } + + memset((char *)up, 0, sizeof(struct neoclock4x_unit)); + pp = peer->procptr; + pp->clockdesc = "NeoClock4X"; + pp->unitptr = (caddr_t)up; + pp->io.clock_recv = neoclock4x_receive; + pp->io.srcclock = (caddr_t)peer; + pp->io.datalen = 0; + pp->io.fd = fd; + /* no time is given by user! use 169.583333 ms to compensate the serial line delay + * formula is: + * 2400 Baud / 11 bit = 218.18 charaters per second + * (NeoClock4X timecode len) + */ + pp->fudgetime1 = (NEOCLOCK4X_TIMECODELEN * 11) / 2400.0; + + if (!io_addclock(&pp->io)) + { + msyslog(LOG_ERR, "NeoClock4X(%d): error add peer to ntpd: %m",unit); + (void) close(fd); + free(up); + return (0); + } + + /* + * Initialize miscellaneous variables + */ + peer->precision = -10; + peer->burst = NSTAGE; + memcpy((char *)&pp->refid, "neol", 4); + + up->leap_status = 0; + up->unit = unit; + strcpy(up->firmware, "?"); + strcpy(up->serial, "?"); + strcpy(up->radiosignal, "?"); + up->timesource = '?'; + up->dststatus = '?'; + up->quarzstatus = '?'; + up->antenna1 = -1; + up->antenna2 = -1; + up->utc_year = 0; + up->utc_month = 0; + up->utc_day = 0; + up->utc_hour = 0; + up->utc_minute = 0; + up->utc_second = 0; + up->utc_msec = 0; + + for(tries=0; tries < 5; tries++) + { + /* + * Wait 3 second for receiver to power up + */ + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_INFO, "NeoClock4X(%d): try query NeoClock4X firmware version (%d/5)", unit, tries); + sleep(3); + if(neol_query_firmware(pp->io.fd, up->unit, up->firmware, sizeof(up->firmware))) + { + break; + } + } + + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_INFO, "NeoClock4X(%d): receiver setup successful done", unit); + + return (1); +} + +static void +neoclock4x_shutdown(int unit, + struct peer *peer) +{ + struct neoclock4x_unit *up; + struct refclockproc *pp; + int sl232; + + pp = peer->procptr; + up = (struct neoclock4x_unit *)pp->unitptr; + +#if defined(TIOCMSET) && (defined(TIOCM_RTS) || defined(CIOCM_RTS)) + /* turn on RTS, and DTR for power supply */ + /* NeoClock4x is powered from serial line */ + if(ioctl(pp->io.fd, TIOCMGET, (caddr_t)&sl232) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't query RTS/DTR state: %m", unit); + } +#ifdef TIOCM_RTS + sl232 &= ~(TIOCM_DTR | TIOCM_RTS); /* turn on RTS, and DTR for power supply */ +#else + sl232 &= ~(CIOCM_DTR | CIOCM_RTS); /* turn on RTS, and DTR for power supply */ +#endif + if(ioctl(pp->io.fd, TIOCMSET, (caddr_t)&sl232) == -1) + { + msyslog(LOG_CRIT, "NeoClock4X(%d): can't set RTS/DTR to power neoclock4x: %m", unit); + } +#endif + msyslog(LOG_ERR, "NeoClock4X(%d): shutdown", unit); + + io_closeclock(&pp->io); + free(up); + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_INFO, "NeoClock4X(%d): receiver shutdown done", unit); +} + +static void +neoclock4x_receive(struct recvbuf *rbufp) +{ + struct neoclock4x_unit *up; + struct refclockproc *pp; + struct peer *peer; + unsigned long calc_utc; + int day; + int month; /* ddd conversion */ + int c; + unsigned char calc_chksum; + int recv_chksum; + + peer = (struct peer *)rbufp->recv_srcclock; + pp = peer->procptr; + up = (struct neoclock4x_unit *)pp->unitptr; + + /* wait till poll interval is reached */ + if(0 == up->recvnow) + return; + + /* reset poll interval flag */ + up->recvnow = 0; + + /* read last received timecode */ + pp->lencode = refclock_gtlin(rbufp, pp->a_lastcode, BMAX, &pp->lastrec); + + if(NEOCLOCK4X_TIMECODELEN != pp->lencode) + { + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_WARNING, "NeoClock4X(%d): received data has invalid length, expected %d bytes, received %d bytes: %s", + up->unit, NEOCLOCK4X_TIMECODELEN, pp->lencode, pp->a_lastcode); + refclock_report(peer, CEVNT_BADREPLY); + return; + } + + neol_hexatoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_CRC], &recv_chksum, 2); + + /* calculate checksum */ + calc_chksum = 0; + for(c=0; c < NEOCLOCK4X_OFFSET_CRC; c++) + { + calc_chksum += pp->a_lastcode[c]; + } + if(recv_chksum != calc_chksum) + { + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_WARNING, "NeoClock4X(%d): received data has invalid chksum: %s", + up->unit, pp->a_lastcode); + refclock_report(peer, CEVNT_BADREPLY); + return; + } + + /* Allow synchronization even is quartz clock is + * never initialized. + * WARNING: This is dangerous! + */ + up->quarzstatus = pp->a_lastcode[NEOCLOCK4X_OFFSET_QUARZSTATUS]; + if(0==(pp->sloppyclockflag & CLK_FLAG2)) + { + if('I' != up->quarzstatus) + { + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_NOTICE, "NeoClock4X(%d): quartz clock is not initialized: %s", + up->unit, pp->a_lastcode); + pp->leap = LEAP_NOTINSYNC; + refclock_report(peer, CEVNT_BADDATE); + return; + } + } + if('I' != up->quarzstatus) + { + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_NOTICE, "NeoClock4X(%d): using uninitialized quartz clock for time synchronization: %s", + up->unit, pp->a_lastcode); + } + + /* + * If NeoClock4X is not synchronized to a radio clock + * check if we're allowed to synchronize with the quartz + * clock. + */ + up->timesource = pp->a_lastcode[NEOCLOCK4X_OFFSET_TIMESOURCE]; + if(0==(pp->sloppyclockflag & CLK_FLAG2)) + { + if('A' != up->timesource) + { + /* not allowed to sync with quartz clock */ + if(0==(pp->sloppyclockflag & CLK_FLAG1)) + { + refclock_report(peer, CEVNT_BADTIME); + pp->leap = LEAP_NOTINSYNC; + return; + } + } + } + + /* this should only used when first install is done */ + if(pp->sloppyclockflag & CLK_FLAG4) + { + msyslog(LOG_DEBUG, "NeoClock4X(%d): received data: %s", + up->unit, pp->a_lastcode); + } + + /* 123456789012345678901234567890123456789012345 */ + /* S/N123456DCF1004021010001202ASX1213CR\r\n */ + + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_YEAR], &pp->year, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_MONTH], &month, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_DAY], &day, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_HOUR], &pp->hour, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_MINUTE], &pp->minute, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_SECOND], &pp->second, 2); + neol_atoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_HSEC], &pp->msec, 2); + pp->msec *= 10; /* convert 1/100s from neoclock to real miliseconds */ + + memcpy(up->radiosignal, &pp->a_lastcode[NEOCLOCK4X_OFFSET_RADIOSIGNAL], 3); + up->radiosignal[3] = 0; + memcpy(up->serial, &pp->a_lastcode[NEOCLOCK4X_OFFSET_SERIAL], 6); + up->serial[6] = 0; + up->dststatus = pp->a_lastcode[NEOCLOCK4X_OFFSET_DSTSTATUS]; + neol_hexatoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_ANTENNA1], &up->antenna1, 2); + neol_hexatoi_len(&pp->a_lastcode[NEOCLOCK4X_OFFSET_ANTENNA2], &up->antenna2, 2); + + /* + Validate received values at least enough to prevent internal + array-bounds problems, etc. + */ + if((pp->hour < 0) || (pp->hour > 23) || + (pp->minute < 0) || (pp->minute > 59) || + (pp->second < 0) || (pp->second > 60) /*Allow for leap seconds.*/ || + (day < 1) || (day > 31) || + (month < 1) || (month > 12) || + (pp->year < 0) || (pp->year > 99)) { + /* Data out of range. */ + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_WARNING, "NeoClock4X(%d): date/time out of range: %s", + up->unit, pp->a_lastcode); + refclock_report(peer, CEVNT_BADDATE); + return; + } + + /* Year-2000 check! */ + /* wrap 2-digit date into 4-digit */ + + if(pp->year < YEAR_PIVOT) /* < 98 */ + { + pp->year += 100; + } + pp->year += 1900; + + calc_utc = neol_mktime(pp->year, month, day, pp->hour, pp->minute, pp->second); + calc_utc -= 3600; + if('S' == up->dststatus) + calc_utc -= 3600; + neol_localtime(calc_utc, &pp->year, &month, &day, &pp->hour, &pp->minute, &pp->second); + + /* + some preparations + */ + pp->day = ymd2yd(pp->year,month,day); + pp->leap = 0; + + + if(pp->sloppyclockflag & CLK_FLAG4) + { + msyslog(LOG_DEBUG, "NeoClock4X(%d): calculated UTC date/time: %04d-%02d-%02d %02d:%02d:%02d.%03d", + up->unit, + pp->year, month, day, + pp->hour, pp->minute, pp->second, pp->msec); + } + + up->utc_year = pp->year; + up->utc_month = month; + up->utc_day = day; + up->utc_hour = pp->hour; + up->utc_minute = pp->minute; + up->utc_second = pp->second; + up->utc_msec = pp->msec; + + if(!refclock_process(pp)) + { + NLOG(NLOG_CLOCKEVENT) + msyslog(LOG_WARNING, "NeoClock4X(%d): refclock_process failed!", up->unit); + refclock_report(peer, CEVNT_FAULT); + return; + } + refclock_receive(peer); + + record_clock_stats(&peer->srcadr, pp->a_lastcode); +} + +static void +neoclock4x_poll(int unit, + struct peer *peer) +{ + struct neoclock4x_unit *up; + struct refclockproc *pp; + + pp = peer->procptr; + up = (struct neoclock4x_unit *)pp->unitptr; + + pp->polls++; + up->recvnow = 1; +} + +static void +neoclock4x_control(int unit, + struct refclockstat *in, + struct refclockstat *out, + struct peer *peer) +{ + struct neoclock4x_unit *up; + struct refclockproc *pp; + + if(NULL == peer) + { + msyslog(LOG_ERR, "NeoClock4X(%d): control: unit invalid/inactive", unit); + return; + } + + pp = peer->procptr; + if(NULL == pp) + { + msyslog(LOG_ERR, "NeoClock4X(%d): control: unit invalid/inactive", unit); + return; + } + + up = (struct neoclock4x_unit *)pp->unitptr; + if(NULL == up) + { + msyslog(LOG_ERR, "NeoClock4X(%d): control: unit invalid/inactive", unit); + return; + } + + if(NULL != in) + { + /* check to see if a user supplied time offset is given */ + if(in->haveflags & CLK_HAVETIME1) + { + pp->fudgetime1 = in->fudgetime1; + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_NOTICE, "NeoClock4X(%d): using fudgetime1 with %0.5fs from ntp.conf.", + unit, pp->fudgetime1); + } + + /* notify */ + if(pp->sloppyclockflag & CLK_FLAG1) + { + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_NOTICE, "NeoClock4X(%d): quartz clock is used to synchronize time if radio clock has no reception.", unit); + } + else + { + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_NOTICE, "NeoClock4X(%d): time is only adjusted with radio signal reception.", unit); + } + } + + if(NULL != out) + { + static char outstatus[800]; /* status output buffer */ + char *tt; + char tmpbuf[80]; + + outstatus[0] = '\0'; + out->kv_list = (struct ctl_var *)0; + out->type = REFCLK_NEOCLOCK4X; + + sprintf(tmpbuf, "%04d-%02d-%02d %02d:%02d:%02d.%03d", + up->utc_year, up->utc_month, up->utc_day, + up->utc_hour, up->utc_minute, up->utc_second, + up->utc_msec); + + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "calc_utc=\"%s\"", tmpbuf); + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "radiosignal=\"%s\"", up->radiosignal); + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "antenna1=\"%d\"", up->antenna1); + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "antenna2=\"%d\"", up->antenna2); + tt = add_var(&out->kv_list, 512, RO|DEF); + if('A' == up->timesource) + tt += sprintf(tt, "timesource=\"radio\""); + else if('C' == up->timesource) + tt += sprintf(tt, "timesource=\"quartz\""); + else + tt += sprintf(tt, "timesource=\"unknown\""); + tt = add_var(&out->kv_list, 512, RO|DEF); + if('I' == up->quarzstatus) + tt += sprintf(tt, "quartzstatus=\"synchronized\""); + else if('X' == up->quarzstatus) + tt += sprintf(tt, "quartzstatus=\"not synchronized\""); + else + tt += sprintf(tt, "quartzstatus=\"unknown\""); + tt = add_var(&out->kv_list, 512, RO|DEF); + if('S' == up->dststatus) + tt += sprintf(tt, "dststatus=\"summer\""); + else if('W' == up->dststatus) + tt += sprintf(tt, "dststatus=\"winter\""); + else + tt += sprintf(tt, "dststatus=\"unknown\""); + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "firmware=\"%s\"", up->firmware); + tt = add_var(&out->kv_list, 512, RO|DEF); + tt += sprintf(tt, "serialnumber=\"%s\"", up->serial); + tt = add_var(&out->kv_list, 512, RO|DEF); + } +} + +static int neol_hexatoi_len(const char str[], + int *result, + int maxlen) +{ + int hexdigit; + int i; + int n = 0; + + for(i=0; isxdigit(str[i]) && i < maxlen; i++) + { + hexdigit = isdigit(str[i]) ? toupper(str[i]) - '0' : toupper(str[i]) - 'A' + 10; + n = 16 * n + hexdigit; + } + *result = n; + return (n); +} + +int neol_atoi_len(const char str[], + int *result, + int maxlen) +{ + int digit; + int i; + int n = 0; + + for(i=0; isdigit(str[i]) && i < maxlen; i++) + { + digit = str[i] - '0'; + n = 10 * n + digit; + } + *result = n; + return (n); +} + +/* Converts Gregorian date to seconds since 1970-01-01 00:00:00. + * Assumes input in normal date format, i.e. 1980-12-31 23:59:59 + * => year=1980, mon=12, day=31, hour=23, min=59, sec=59. + * + * [For the Julian calendar (which was used in Russia before 1917, + * Britain & colonies before 1752, anywhere else before 1582, + * and is still in use by some communities) leave out the + * -year/100+year/400 terms, and add 10.] + * + * This algorithm was first published by Gauss (I think). + * + * WARNING: this function will overflow on 2106-02-07 06:28:16 on + * machines were long is 32-bit! (However, as time_t is signed, we + * will already get problems at other places on 2038-01-19 03:14:08) + */ +static unsigned long neol_mktime(int year, + int mon, + int day, + int hour, + int min, + int sec) +{ + if (0 >= (int) (mon -= 2)) { /* 1..12 . 11,12,1..10 */ + mon += 12; /* Puts Feb last since it has leap day */ + year -= 1; + } + return ((( + (unsigned long)(year/4 - year/100 + year/400 + 367*mon/12 + day) + + year*365 - 719499 + )*24 + hour /* now have hours */ + )*60 + min /* now have minutes */ + )*60 + sec; /* finally seconds */ +} + +static void neol_localtime(unsigned long utc, + int* year, + int* month, + int* day, + int* hour, + int* minute, + int* second) +{ + ldiv_t d; + + /* Sekunden */ + d = ldiv(utc, 60); + *second = d.rem; + + /* Minute */ + d = ldiv(d.quot, 60); + *minute = d.rem; + + /* Stunden */ + d = ldiv(d.quot, 24); + *hour = d.rem; + + /* JDN Date 1/1/1970 */ + neol_jdn_to_ymd(d.quot + 2440588L, year, month, day); +} + +static void neol_jdn_to_ymd(unsigned long jdn, + int *yy, + int *mm, + int *dd) +{ + unsigned long x, z, m, d, y; + unsigned long daysPer400Years = 146097UL; + unsigned long fudgedDaysPer4000Years = 1460970UL + 31UL; + + x = jdn + 68569UL; + z = 4UL * x / daysPer400Years; + x = x - (daysPer400Years * z + 3UL) / 4UL; + y = 4000UL * (x + 1) / fudgedDaysPer4000Years; + x = x - 1461UL * y / 4UL + 31UL; + m = 80UL * x / 2447UL; + d = x - 2447UL * m / 80UL; + x = m / 11UL; + m = m + 2UL - 12UL * x; + y = 100UL * (z - 49UL) + y + x; + + *yy = (int)y; + *mm = (int)m; + *dd = (int)d; +} + +/* + * delay in milliseconds + */ +static void +neol_mdelay(int milliseconds) +{ + struct timeval tv; + + if (milliseconds) + { + tv.tv_sec = 0; + tv.tv_usec = milliseconds * 1000; + select(1, NULL, NULL, NULL, &tv); + } +} + +static int +neol_query_firmware(int fd, + int unit, + char *firmware, + int maxlen) +{ + unsigned char tmpbuf[256]; + int len; + int lastsearch; + unsigned char c; + int last_c_was_crlf; + int last_crlf_conv_len; + int init; + int read_tries; + int flag = 0; + + /* wait a little bit */ + neol_mdelay(250); + if(-1 != write(fd, "V", 1)) + { + /* wait a little bit */ + neol_mdelay(250); + memset(tmpbuf, 0x00, sizeof(tmpbuf)); + + len = 0; + lastsearch = 0; + last_c_was_crlf = 0; + last_crlf_conv_len = 0; + init = 1; + read_tries = 0; + for(;;) + { + if(read_tries++ > 500) + { + msyslog(LOG_ERR, "NeoClock4X(%d): can't read firmware version (timeout)", unit); + strcpy(tmpbuf, "unknown due to timeout"); + break; + } + if(-1 == read(fd, &c, 1)) + { + neol_mdelay(25); + continue; + } + if(init) + { + if(0xA9 != c) /* wait for (c) char in input stream */ + continue; + + strcpy(tmpbuf, "(c)"); + len = 3; + init = 0; + continue; + } + + //msyslog(LOG_NOTICE, "NeoClock4X(%d): firmware %c = %02Xh", unit, c, c); + if(0x0A == c || 0x0D == c) + { + if(last_c_was_crlf) + { + char *ptr; + ptr = strstr(&tmpbuf[lastsearch], "S/N"); + if(NULL != ptr) + { + tmpbuf[last_crlf_conv_len] = 0; + flag = 1; + break; + } + /* convert \n to / */ + last_crlf_conv_len = len; + tmpbuf[len++] = ' '; + tmpbuf[len++] = '/'; + tmpbuf[len++] = ' '; + lastsearch = len; + } + last_c_was_crlf = 1; + } + else + { + last_c_was_crlf = 0; + if(0x00 != c) + tmpbuf[len++] = c; + } + tmpbuf[len] = '\0'; + if(len > sizeof(tmpbuf)-5) + break; + } + } + else + { + msyslog(LOG_ERR, "NeoClock4X(%d): can't query firmware version", unit); + strcpy(tmpbuf, "unknown error"); + } + strncpy(firmware, tmpbuf, maxlen); + firmware[maxlen] = '\0'; + + if(flag) + { + NLOG(NLOG_CLOCKINFO) + msyslog(LOG_INFO, "NeoClock4X(%d): firmware version: %s", unit, firmware); + } + + return (flag); +} + +#else +int refclock_neoclock4x_bs; +#endif /* REFCLOCK */ + +/* + * History: + * refclock_neoclock4x.c + * + * 2002/04/27 cjh + * Revision 1.0 first release + * + * 2002/0715 cjh + * preparing for bitkeeper reposity + * + */ -- cgit v1.1