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Fix several places where fractional-second inputs were misprocessed

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in HAVE_INT64_TIMESTAMP cases, including two potential stack smashes
when more than six fractional digits were supplied.  Per bug report
from Philipp Reisner.
This commit is contained in:
Tom Lane
2003-08-05 17:39:36 +00:00
parent d1f35b73ac
commit 1b637d7cbe
1 changed files with 38 additions and 33 deletions
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71
src/backend/utils/adt/datetime.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.96.2.5 2003/05/04 04:30:35 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.96.2.6 2003/08/05 17:39:36 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1128,7 +1128,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
if (*cp != '\0')
return -1;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = frac * 1000000;
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
@@ -1158,9 +1158,11 @@ DecodeDateTime(char **field, int *ftype, int nf,
tmask |= DTK_TIME_M;
#ifdef HAVE_INT64_TIMESTAMP
dt2time((time * 86400000000), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
dt2time((time * 86400000000),
&tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
#else
dt2time((time * 86400), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
dt2time((time * 86400),
&tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
#endif
}
break;
@@ -1835,9 +1837,16 @@ DecodeTimeOnly(char **field, int *ftype, int nf,
tmask = DTK_M(SECOND);
if (*cp == '.')
{
*fsec = strtod(cp, &cp);
double frac;
frac = strtod(cp, &cp);
if (*cp != '\0')
return -1;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
}
break;
@@ -1863,9 +1872,11 @@ DecodeTimeOnly(char **field, int *ftype, int nf,
tmask |= DTK_TIME_M;
#ifdef HAVE_INT64_TIMESTAMP
dt2time((time * 86400000000), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
dt2time((time * 86400000000),
&tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
#else
dt2time((time * 86400), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
dt2time((time * 86400),
&tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
#endif
}
break;
@@ -2268,24 +2279,17 @@ DecodeTime(char *str, int fmask, int *tmask, struct tm * tm, fsec_t *fsec)
*fsec = 0;
else if (*cp == '.')
{
#ifdef HAVE_INT64_TIMESTAMP
char fstr[MAXDATELEN + 1];
double frac;
/*
* OK, we have at most six digits to work with. Let's
* construct a string and then do the conversion to an
* integer.
*/
strncpy(fstr, (cp + 1), 7);
strcpy((fstr + strlen(fstr)), "000000");
*(fstr + 6) = '\0';
*fsec = strtol(fstr, &cp, 10);
#else
str = cp;
*fsec = strtod(str, &cp);
#endif
frac = strtod(str, &cp);
if (*cp != '\0')
return -1;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
}
else
return -1;
@@ -2328,6 +2332,8 @@ DecodeNumber(int flen, char *str, int fmask,
if (*cp == '.')
{
double frac;
/*
* More than two digits? Then could be a date or a run-together
* time: 2001.360 20011225 040506.789
@@ -2336,9 +2342,14 @@ DecodeNumber(int flen, char *str, int fmask,
return DecodeNumberField(flen, str, (fmask | DTK_DATE_M),
tmask, tm, fsec, is2digits);
*fsec = strtod(cp, &cp);
frac = strtod(cp, &cp);
if (*cp != '\0')
return -1;
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = frac;
#endif
}
else if (*cp != '\0')
return -1;
@@ -2441,19 +2452,13 @@ DecodeNumberField(int len, char *str, int fmask,
*/
if ((cp = strchr(str, '.')) != NULL)
{
#ifdef HAVE_INT64_TIMESTAMP
char fstr[MAXDATELEN + 1];
double frac;
/*
* OK, we have at most six digits to care about. Let's construct a
* string and then do the conversion to an integer.
*/
strcpy(fstr, (cp + 1));
strcpy((fstr + strlen(fstr)), "000000");
*(fstr + 6) = '\0';
*fsec = strtol(fstr, NULL, 10);
frac = strtod(cp, NULL);
#ifdef HAVE_INT64_TIMESTAMP
*fsec = rint(frac * 1000000);
#else
*fsec = strtod(cp, NULL);
*fsec = frac;
#endif
*cp = '\0';
len = strlen(str);