Fix code to check legal dates *before* calling localtime() to get the
time zone. Previously, localtime() rotated a date with a day of month field which exceeded the actual range into the next months, masking the fact that a bad date had been specified. Regression tests pass.
This commit is contained in:
Thomas G. Lockhart
parent
64e74e30b5
commit
b2b3d5d184
@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.30 1999/03/14 16:40:15 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.31 1999/04/15 02:22:37 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -27,19 +27,6 @@
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static int date2tm(DateADT dateVal, int *tzp, struct tm * tm, double *fsec, char **tzn);
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#define UTIME_MINYEAR (1901)
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#define UTIME_MINMONTH (12)
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#define UTIME_MINDAY (14)
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#define UTIME_MAXYEAR (2038)
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#define UTIME_MAXMONTH (01)
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#define UTIME_MAXDAY (18)
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#define IS_VALID_UTIME(y,m,d) (((y > UTIME_MINYEAR) \
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|| ((y == UTIME_MINYEAR) && ((m > UTIME_MINMONTH) \
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|| ((m == UTIME_MINMONTH) && (d >= UTIME_MINDAY))))) \
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&& ((y < UTIME_MAXYEAR) \
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|| ((y == UTIME_MAXYEAR) && ((m < UTIME_MAXMONTH) \
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|| ((m == UTIME_MAXMONTH) && (d <= UTIME_MAXDAY))))))
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/*****************************************************************************
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* Date ADT
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@ -71,7 +58,7 @@ date_in(char *str)
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#endif
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if ((ParseDateTime(str, lowstr, field, ftype, MAXDATEFIELDS, &nf) != 0)
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|| (DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tzp) != 0))
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elog(ERROR, "Bad date external representation %s", str);
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elog(ERROR, "Bad date external representation '%s'", str);
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switch (dtype)
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{
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@ -89,19 +76,9 @@ date_in(char *str)
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break;
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default:
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elog(ERROR, "Unrecognized date external representation %s", str);
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elog(ERROR, "Unrecognized date external representation '%s'", str);
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}
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#ifdef NOT_USED
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if (tm->tm_year < 0 || tm->tm_year > 32767)
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elog(ERROR, "date_in: year must be limited to values 0 through 32767 in '%s'", str);
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if (tm->tm_mon < 1 || tm->tm_mon > 12)
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elog(ERROR, "date_in: month must be limited to values 1 through 12 in '%s'", str);
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#endif
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if (tm->tm_mday < 1 || tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
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elog(ERROR, "date_in: day must be limited to values 1 through %d in '%s'",
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day_tab[isleap(tm->tm_year)][tm->tm_mon - 1], str);
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date = (date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - date2j(2000, 1, 1));
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return date;
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@ -453,13 +430,6 @@ time_in(char *str)
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|| (DecodeTimeOnly(field, ftype, nf, &dtype, tm, &fsec) != 0))
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elog(ERROR, "Bad time external representation '%s'", str);
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if ((tm->tm_hour < 0) || (tm->tm_hour > 23))
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elog(ERROR, "Hour must be limited to values 0 through 23 in '%s'", str);
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if ((tm->tm_min < 0) || (tm->tm_min > 59))
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elog(ERROR, "Minute must be limited to values 0 through 59 in '%s'", str);
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if ((tm->tm_sec < 0) || ((tm->tm_sec + fsec) >= 60))
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elog(ERROR, "Second must be limited to values 0 through < 60 in '%s'", str);
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time = palloc(sizeof(TimeADT));
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*time = ((((tm->tm_hour * 60) + tm->tm_min) * 60) + tm->tm_sec + fsec);
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/dt.c,v 1.67 1999/03/20 02:31:45 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/dt.c,v 1.68 1999/04/15 02:22:39 thomas Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -55,12 +55,6 @@ static int tm2timespan(struct tm * tm, double fsec, TimeSpan *span);
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#define USE_DATE_CACHE 1
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#define ROUND_ALL 0
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#if 0
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#define isleap(y) (((y % 4) == 0) && (((y % 100) != 0) || ((y % 400) == 0)))
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int mdays[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0};
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#endif
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int day_tab[2][13] = {
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{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0},
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{31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0}};
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@ -882,15 +876,6 @@ datetime_pl_span(DateTime *datetime, TimeSpan *span)
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}
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/* adjust for end of month boundary problems... */
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#if 0
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if (tm->tm_mday > mdays[tm->tm_mon - 1])
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{
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if ((tm->tm_mon == 2) && isleap(tm->tm_year))
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tm->tm_mday = (mdays[tm->tm_mon - 1] + 1);
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else
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tm->tm_mday = mdays[tm->tm_mon - 1];
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}
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#endif
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if (tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
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tm->tm_mday = (day_tab[isleap(tm->tm_year)][tm->tm_mon - 1]);
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@ -1197,21 +1182,11 @@ datetime_age(DateTime *datetime1, DateTime *datetime2)
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{
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if (dt1 < dt2)
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{
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#if 0
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tm->tm_mday += mdays[tm1->tm_mon - 1];
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if (isleap(tm1->tm_year) && (tm1->tm_mon == 2))
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tm->tm_mday++;
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#endif
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tm->tm_mday += day_tab[isleap(tm1->tm_year)][tm1->tm_mon - 1];
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tm->tm_mon--;
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}
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else
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{
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#if 0
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tm->tm_mday += mdays[tm2->tm_mon - 1];
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if (isleap(tm2->tm_year) && (tm2->tm_mon == 2))
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tm->tm_mday++;
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#endif
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tm->tm_mday += day_tab[isleap(tm2->tm_year)][tm2->tm_mon - 1];
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tm->tm_mon--;
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}
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@ -2302,21 +2277,6 @@ datetkn *deltacache[MAXDATEFIELDS] = {NULL};
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* These routines will be used by other date/time packages - tgl 97/02/25
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*/
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#if 0
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XXX moved to dt.h - thomas 1999-01-15
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/* Set the minimum year to one greater than the year of the first valid day
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* to avoid having to check year and day both. - tgl 97/05/08
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*/
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#define JULIAN_MINYEAR (-4713)
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#define JULIAN_MINMONTH (11)
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#define JULIAN_MINDAY (23)
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#define IS_VALID_JULIAN(y,m,d) ((y > JULIAN_MINYEAR) \
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|| ((y == JULIAN_MINYEAR) && ((m > JULIAN_MINMONTH) \
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|| ((m == JULIAN_MINMONTH) && (d >= JULIAN_MINDAY)))))
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#endif
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int
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date2j(int y, int m, int d)
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{
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@ -3063,47 +3023,55 @@ DecodeDateTime(char **field, int *ftype, int nf,
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printf(" %02d:%02d:%02d\n", tm->tm_hour, tm->tm_min, tm->tm_sec);
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#endif
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if ((*dtype == DTK_DATE) && ((fmask & DTK_DATE_M) != DTK_DATE_M))
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return ((fmask & DTK_TIME_M) == DTK_TIME_M) ? 1 : -1;
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/* timezone not specified? then find local timezone if possible */
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if ((*dtype == DTK_DATE) && ((fmask & DTK_DATE_M) == DTK_DATE_M)
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&& (tzp != NULL) && (!(fmask & DTK_M(TZ))))
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/* do additional checking for full date specs... */
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if (*dtype == DTK_DATE)
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{
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if ((fmask & DTK_DATE_M) != DTK_DATE_M)
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return ((fmask & DTK_TIME_M) == DTK_TIME_M) ? 1 : -1;
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/*
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* daylight savings time modifier but no standard timezone? then
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* error
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*/
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if (fmask & DTK_M(DTZMOD))
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/* check for valid day of month, now that we know for sure the month and year... */
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if ((tm->tm_mday < 1)
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|| (tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1]))
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return -1;
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if (IS_VALID_UTIME(tm->tm_year, tm->tm_mon, tm->tm_mday))
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/* timezone not specified? then find local timezone if possible */
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if (((fmask & DTK_DATE_M) == DTK_DATE_M)
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&& (tzp != NULL) && (!(fmask & DTK_M(TZ))))
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{
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/*
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* daylight savings time modifier but no standard timezone? then
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* error
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*/
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if (fmask & DTK_M(DTZMOD))
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return -1;
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if (IS_VALID_UTIME(tm->tm_year, tm->tm_mon, tm->tm_mday))
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{
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#ifdef USE_POSIX_TIME
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tm->tm_year -= 1900;
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tm->tm_mon -= 1;
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tm->tm_isdst = -1;
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mktime(tm);
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tm->tm_year += 1900;
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tm->tm_mon += 1;
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tm->tm_year -= 1900;
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tm->tm_mon -= 1;
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tm->tm_isdst = -1;
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mktime(tm);
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tm->tm_year += 1900;
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tm->tm_mon += 1;
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#if defined(HAVE_TM_ZONE)
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*tzp = -(tm->tm_gmtoff); /* tm_gmtoff is Sun/DEC-ism */
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*tzp = -(tm->tm_gmtoff); /* tm_gmtoff is Sun/DEC-ism */
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#elif defined(HAVE_INT_TIMEZONE)
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*tzp = ((tm->tm_isdst > 0) ? (timezone - 3600) : timezone);
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*tzp = ((tm->tm_isdst > 0) ? (timezone - 3600) : timezone);
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#else
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#error USE_POSIX_TIME is defined but neither HAVE_TM_ZONE or HAVE_INT_TIMEZONE are defined
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#endif
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#else /* !USE_POSIX_TIME */
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*tzp = CTimeZone;
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*tzp = CTimeZone;
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#endif
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}
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else
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{
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tm->tm_isdst = 0;
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*tzp = 0;
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}
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else
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{
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tm->tm_isdst = 0;
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*tzp = 0;
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}
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}
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}
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@ -3231,6 +3199,11 @@ DecodeTimeOnly(char **field, int *ftype, int nf, int *dtype, struct tm * tm, dou
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else if ((mer == PM) && (tm->tm_hour != 12))
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tm->tm_hour += 12;
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if (((tm->tm_hour < 0) || (tm->tm_hour > 23))
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|| ((tm->tm_min < 0) || (tm->tm_min > 59))
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|| ((tm->tm_sec < 0) || ((tm->tm_sec + *fsec) >= 60)))
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return -1;
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if ((fmask & DTK_TIME_M) != DTK_TIME_M)
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return -1;
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@ -3541,15 +3514,6 @@ DecodeNumber(int flen, char *str, int fmask,
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tm->tm_year = val;
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/* adjust ONLY if exactly two digits... */
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#if 0
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if (flen == 2)
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{
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if (tm->tm_year < 70)
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tm->tm_year += 2000;
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else if (tm->tm_year < 100)
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tm->tm_year += 1900;
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}
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#endif
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*is2digits = (flen == 2);
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}
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@ -3615,13 +3579,6 @@ DecodeNumberField(int len, char *str, int fmask,
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tm->tm_mon = atoi(str + 2);
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*(str + 2) = '\0';
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tm->tm_year = atoi(str + 0);
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#if 0
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if (tm->tm_year < 70)
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tm->tm_year += 2000;
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else if (tm->tm_year < 100)
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tm->tm_year += 1900;
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#endif
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*is2digits = TRUE;
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}
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@ -3636,13 +3593,6 @@ DecodeNumberField(int len, char *str, int fmask,
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*(str + 2) = '\0';
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tm->tm_mon = 1;
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tm->tm_year = atoi(str + 0);
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#if 0
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if (tm->tm_year < 70)
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tm->tm_year += 2000;
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else if (tm->tm_year < 100)
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tm->tm_year += 1900;
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#endif
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*is2digits = TRUE;
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}
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else if (strchr(str, '.') != NULL)
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