From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 9 Feb 2006 03:40:42 +0000 (+0000)
Subject: Reject out-of-range dates in date_in().
X-Git-Url: http://git.postgresql.org/gitweb/static/gitweb.js?a=commitdiff_plain;h=cc539bdd44c7cd7c23077a9c325d07693e45bfce;p=users%2Fbernd%2Fpostgres.git

Reject out-of-range dates in date_in().

Kris Jurka
---

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 02859de7b0..ff52183598 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1358,7 +1358,7 @@ SELECT b, char_length(b) FROM test2;
         <entry>4 bytes</entry>
         <entry>dates only</entry>
         <entry>4713 BC</entry>
-        <entry>32767 AD</entry>
+        <entry>5874897 AD</entry>
         <entry>1 day</entry>
        </row>
        <row>
@@ -1645,7 +1645,7 @@ SELECT b, char_length(b) FROM test2;
          </row>
          <row>
           <entry><literal>04:05 PM</literal></entry>
-          <entry>same as 16:05; input hour must be <= 12</entry>
+          <entry>same as 16:05; input hour must be &lt;= 12</entry>
          </row>
          <row>
           <entry><literal>04:05:06.789-8</literal></entry>
@@ -2367,7 +2367,7 @@ SELECT * FROM test1 WHERE a;
         <entry><type>circle</type></entry>
         <entry>24 bytes</entry>
         <entry>Circle</entry>
-        <entry><(x,y),r> (center and radius)</entry>
+        <entry>&lt;(x,y),r&gt; (center and radius)</entry>
        </row>
       </tbody>
      </tgroup>
diff --git a/src/backend/utils/adt/date.c b/src/backend/utils/adt/date.c
index e7d36eec64..6a94674cf4 100644
--- a/src/backend/utils/adt/date.c
+++ b/src/backend/utils/adt/date.c
@@ -65,12 +65,10 @@ date_in(PG_FUNCTION_ARGS)
 	int			dterr;
 	char	   *field[MAXDATEFIELDS];
 	int			ftype[MAXDATEFIELDS];
-	char		lowstr[MAXDATELEN + 1];
+	char		workbuf[MAXDATELEN + 1];
 
-	if (strlen(str) >= sizeof(lowstr))
-		dterr = DTERR_BAD_FORMAT;
-	else
-		dterr = ParseDateTime(str, lowstr, field, ftype, MAXDATEFIELDS, &nf);
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
 	if (dterr == 0)
 		dterr = DecodeDateTime(field, ftype, nf, &dtype, tm, &fsec, &tzp);
 	if (dterr != 0)
@@ -98,6 +96,11 @@ date_in(PG_FUNCTION_ARGS)
 			break;
 	}
 
+	if (!IS_VALID_JULIAN(tm->tm_year, tm->tm_mon, tm->tm_mday))
+		ereport(ERROR,
+				(errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
+				 errmsg("date out of range: \"%s\"", str)));
+
 	date = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - POSTGRES_EPOCH_JDATE;
 
 	PG_RETURN_DATEADT(date);
@@ -894,15 +897,13 @@ time_in(PG_FUNCTION_ARGS)
 	int			tz;
 	int			nf;
 	int			dterr;
-	char		lowstr[MAXDATELEN + 1];
+	char		workbuf[MAXDATELEN + 1];
 	char	   *field[MAXDATEFIELDS];
 	int			dtype;
 	int			ftype[MAXDATEFIELDS];
 
-	if (strlen(str) >= sizeof(lowstr))
-		dterr = DTERR_BAD_FORMAT;
-	else
-		dterr = ParseDateTime(str, lowstr, field, ftype, MAXDATEFIELDS, &nf);
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
 	if (dterr == 0)
 		dterr = DecodeTimeOnly(field, ftype, nf, &dtype, tm, &fsec, &tz);
 	if (dterr != 0)
@@ -1734,15 +1735,13 @@ timetz_in(PG_FUNCTION_ARGS)
 	int			tz;
 	int			nf;
 	int			dterr;
-	char		lowstr[MAXDATELEN + 1];
+	char		workbuf[MAXDATELEN + 1];
 	char	   *field[MAXDATEFIELDS];
 	int			dtype;
 	int			ftype[MAXDATEFIELDS];
 
-	if (strlen(str) >= sizeof(lowstr))
-		dterr = DTERR_BAD_FORMAT;
-	else
-		dterr = ParseDateTime(str, lowstr, field, ftype, MAXDATEFIELDS, &nf);
+	dterr = ParseDateTime(str, workbuf, sizeof(workbuf),
+						  field, ftype, MAXDATEFIELDS, &nf);
 	if (dterr == 0)
 		dterr = DecodeTimeOnly(field, ftype, nf, &dtype, tm, &fsec, &tz);
 	if (dterr != 0)
@@ -1869,12 +1868,20 @@ timetz_scale(PG_FUNCTION_ARGS)
 static int
 timetz_cmp_internal(TimeTzADT *time1, TimeTzADT *time2)
 {
+	/* Primary sort is by true (GMT-equivalent) time */
+#ifdef HAVE_INT64_TIMESTAMP
+	int64		t1,
+				t2;
+
+	t1 = time1->time + (time1->zone * INT64CONST(1000000));
+	t2 = time2->time + (time2->zone * INT64CONST(1000000));
+#else
 	double		t1,
 				t2;
 
-	/* Primary sort is by true (GMT-equivalent) time */
 	t1 = time1->time + time1->zone;
 	t2 = time2->time + time2->zone;
+#endif
 
 	if (t1 > t2)
 		return 1;
@@ -2443,9 +2450,9 @@ timetz_part(PG_FUNCTION_ARGS)
 	else if ((type == RESERV) && (val == DTK_EPOCH))
 	{
 #ifdef HAVE_INT64_TIMESTAMP
-		result = ((time->time / 1000000e0) - time->zone);
+		result = ((time->time / 1000000e0) + time->zone);
 #else
-		result = (time->time - time->zone);
+		result = (time->time + time->zone);
 #endif
 	}
 	else