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Fix datetime input functions to correctly detect integer overflow when

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running on a 64-bit platform ... strtol() will happily return 64-bit
output in that case.  Per bug #4231 from Geoff Tolley.
This commit is contained in:
Tom Lane 2008-06-09 19:34:40 +00:00
parent 9acedf8faf
commit 0c423f0258
1 changed files with 28 additions and 11 deletions
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39
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 1.118.2.8 2008/01/02 22:05:36 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.118.2.9 2008/06/09 19:34:40 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -579,6 +579,23 @@ static datetkn *datecache[MAXDATEFIELDS] = {NULL};
static datetkn *deltacache[MAXDATEFIELDS] = {NULL};
/*
* strtoi --- just like strtol, but returns int not long
*/
static int
strtoi(const char *nptr, char **endptr, int base)
{
long val;
val = strtol(nptr, endptr, base);
#ifdef HAVE_LONG_INT_64
if (val != (long) ((int32) val))
errno = ERANGE;
#endif
return (int) val;
}
/*
* Calendar time to Julian date conversions.
* Julian date is commonly used in astronomical applications,
@ -978,7 +995,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
return DTERR_BAD_FORMAT;
errno = 0;
val = strtol(field[i], &cp, 10);
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -1126,7 +1143,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
int val;
errno = 0;
val = strtol(field[i], &cp, 10);
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -1870,7 +1887,7 @@ DecodeTimeOnly(char **field, int *ftype, int nf,
}
errno = 0;
val = strtol(field[i], &cp, 10);
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
@ -2415,14 +2432,14 @@ DecodeTime(char *str, int fmask, int *tmask, struct tm * tm, fsec_t *fsec)
*tmask = DTK_TIME_M;
errno = 0;
tm->tm_hour = strtol(str, &cp, 10);
tm->tm_hour = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp != ':')
return DTERR_BAD_FORMAT;
str = cp + 1;
errno = 0;
tm->tm_min = strtol(str, &cp, 10);
tm->tm_min = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp == '\0')
@ -2436,7 +2453,7 @@ DecodeTime(char *str, int fmask, int *tmask, struct tm * tm, fsec_t *fsec)
{
str = cp + 1;
errno = 0;
tm->tm_sec = strtol(str, &cp, 10);
tm->tm_sec = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (*cp == '\0')
@ -2493,7 +2510,7 @@ DecodeNumber(int flen, char *str, bool haveTextMonth, int fmask,
*tmask = 0;
errno = 0;
val = strtol(str, &cp, 10);
val = strtoi(str, &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;
if (cp == str)
@ -2784,7 +2801,7 @@ DecodeTimezone(char *str, int *tzp)
return DTERR_BAD_FORMAT;
errno = 0;
hr = strtol((str + 1), &cp, 10);
hr = strtoi((str + 1), &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
@ -2792,7 +2809,7 @@ DecodeTimezone(char *str, int *tzp)
if (*cp == ':')
{
errno = 0;
min = strtol((cp + 1), &cp, 10);
min = strtoi((cp + 1), &cp, 10);
if (errno == ERANGE)
return DTERR_TZDISP_OVERFLOW;
}
@ -3041,7 +3058,7 @@ DecodeInterval(char **field, int *ftype, int nf, int *dtype, struct tm * tm, fse
case DTK_DATE:
case DTK_NUMBER:
errno = 0;
val = strtol(field[i], &cp, 10);
val = strtoi(field[i], &cp, 10);
if (errno == ERANGE)
return DTERR_FIELD_OVERFLOW;