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Remove the 'not in' operator (!!=). This was a hangover from Berkeley

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days that was obsolete the moment we had IN (SELECT ...) capability.
It's arguably a security hole since it applied no permissions check to
the table it searched, and since it was never documented anywhere,
removing it seems more appropriate than fixing it.
This commit is contained in:
Tom Lane
2007-08-27 01:39:25 +00:00
parent a41e46b261
commit 6c96188cb5
6 changed files with 7 additions and 141 deletions
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4
src/backend/utils/adt/Makefile
View File

@@ -1,7 +1,7 @@
#
# Makefile for utils/adt
#
# $PostgreSQL: pgsql/src/backend/utils/adt/Makefile,v 1.65 2007/08/21 01:11:18 tgl Exp $
# $PostgreSQL: pgsql/src/backend/utils/adt/Makefile,v 1.66 2007/08/27 01:39:24 tgl Exp $
#
subdir = src/backend/utils/adt
@@ -19,7 +19,7 @@ OBJS = acl.o arrayfuncs.o array_userfuncs.o arrayutils.o bool.o \
cash.o char.o date.o datetime.o datum.o domains.o \
enum.o float.o format_type.o \
geo_ops.o geo_selfuncs.o int.o int8.o like.o lockfuncs.o \
misc.o nabstime.o name.o not_in.o numeric.o numutils.o \
misc.o nabstime.o name.o numeric.o numutils.o \
oid.o oracle_compat.o pseudotypes.o rowtypes.o \
regexp.o regproc.o ruleutils.o selfuncs.o \
tid.o timestamp.o varbit.o varchar.o varlena.o version.o xid.o \

124
src/backend/utils/adt/not_in.c
View File

@@ -1,124 +0,0 @@
/*-------------------------------------------------------------------------
*
* not_in.c
* Executes the "not_in" operator for any data type
*
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/not_in.c,v 1.46 2007/01/05 22:19:41 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/*
*
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
* X HACK WARNING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! X
* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*
* This code is the OLD not-in code that is HACKED
* into place until operators that can have arguments as
* columns are ******REALLY****** implemented!!!!!!!!!!!
*
*/
#include "postgres.h"
#include "access/heapam.h"
#include "catalog/namespace.h"
#include "parser/parse_relation.h"
#include "utils/builtins.h"
/* ----------------------------------------------------------------
*
* ----------------------------------------------------------------
*/
Datum
int4notin(PG_FUNCTION_ARGS)
{
int32 not_in_arg = PG_GETARG_INT32(0);
text *relation_and_attr = PG_GETARG_TEXT_P(1);
List *names;
int nnames;
RangeVar *relrv;
char *attribute;
Relation relation_to_scan;
int32 integer_value;
HeapTuple current_tuple;
HeapScanDesc scan_descriptor;
bool isNull,
retval;
int attrid;
Datum value;
/* Parse the argument */
names = textToQualifiedNameList(relation_and_attr);
nnames = list_length(names);
if (nnames < 2)
ereport(ERROR,
(errcode(ERRCODE_INVALID_NAME),
errmsg("invalid name syntax"),
errhint("Must provide \"relationname.columnname\".")));
attribute = strVal(llast(names));
names = list_truncate(names, nnames - 1);
relrv = makeRangeVarFromNameList(names);
/* Open the relation and get a relation descriptor */
relation_to_scan = heap_openrv(relrv, AccessShareLock);
/* Find the column to search */
attrid = attnameAttNum(relation_to_scan, attribute, true);
if (attrid == InvalidAttrNumber)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_COLUMN),
errmsg("column \"%s\" of relation \"%s\" does not exist",
attribute,
RelationGetRelationName(relation_to_scan))));
scan_descriptor = heap_beginscan(relation_to_scan, SnapshotNow,
0, (ScanKey) NULL);
retval = true;
/* do a scan of the relation, and do the check */
while ((current_tuple = heap_getnext(scan_descriptor, ForwardScanDirection)) != NULL)
{
value = heap_getattr(current_tuple,
(AttrNumber) attrid,
RelationGetDescr(relation_to_scan),
&isNull);
if (isNull)
continue;
integer_value = DatumGetInt32(value);
if (not_in_arg == integer_value)
{
retval = false;
break; /* can stop scanning now */
}
}
/* close the relation */
heap_endscan(scan_descriptor);
heap_close(relation_to_scan, AccessShareLock);
PG_RETURN_BOOL(retval);
}
Datum
oidnotin(PG_FUNCTION_ARGS)
{
Oid the_oid = PG_GETARG_OID(0);
#ifdef NOT_USED
text *relation_and_attr = PG_GETARG_TEXT_P(1);
#endif
if (the_oid == InvalidOid)
PG_RETURN_BOOL(false);
/* XXX assume oid maps to int4 */
return int4notin(fcinfo);
}

4
src/include/catalog/catversion.h
View File

@@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.418 2007/08/25 01:06:25 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.419 2007/08/27 01:39:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 200708241
#define CATALOG_VERSION_NO 200708261
#endif

4
src/include/catalog/pg_operator.h
View File

@@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_operator.h,v 1.154 2007/08/21 01:11:25 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_operator.h,v 1.155 2007/08/27 01:39:24 tgl Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
@@ -290,8 +290,6 @@ DATA(insert OID = 622 ( "<" PGNSP PGUID b f f 700 700 16 623 625 float4lt s
DATA(insert OID = 623 ( ">" PGNSP PGUID b f f 700 700 16 622 624 float4gt scalargtsel scalargtjoinsel ));
DATA(insert OID = 624 ( "<=" PGNSP PGUID b f f 700 700 16 625 623 float4le scalarltsel scalarltjoinsel ));
DATA(insert OID = 625 ( ">=" PGNSP PGUID b f f 700 700 16 624 622 float4ge scalargtsel scalargtjoinsel ));
DATA(insert OID = 626 ( "!!=" PGNSP PGUID b f f 23 25 16 0 0 int4notin - - ));
DATA(insert OID = 627 ( "!!=" PGNSP PGUID b f f 26 25 16 0 0 oidnotin - - ));
DATA(insert OID = 630 ( "<>" PGNSP PGUID b f f 18 18 16 630 92 charne neqsel neqjoinsel ));
DATA(insert OID = 631 ( "<" PGNSP PGUID b f f 18 18 16 633 634 charlt scalarltsel scalarltjoinsel ));

6
src/include/catalog/pg_proc.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.464 2007/08/22 01:39:45 tgl Exp $
* $PostgreSQL: pgsql/src/include/catalog/pg_proc.h,v 1.465 2007/08/27 01:39:24 tgl Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
@@ -902,10 +902,6 @@ DESCR("convert int8 to int2");
DATA(insert OID = 754 ( int8 PGNSP PGUID 12 1 0 f f t f i 1 20 "21" _null_ _null_ _null_ int28 - _null_ ));
DESCR("convert int2 to int8");
DATA(insert OID = 1285 ( int4notin PGNSP PGUID 12 1 0 f f t f s 2 16 "23 25" _null_ _null_ _null_ int4notin - _null_ ));
DESCR("not in");
DATA(insert OID = 1286 ( oidnotin PGNSP PGUID 12 1 0 f f t f s 2 16 "26 25" _null_ _null_ _null_ oidnotin - _null_ ));
DESCR("not in");
DATA(insert OID = 655 ( namelt PGNSP PGUID 12 1 0 f f t f i 2 16 "19 19" _null_ _null_ _null_ namelt - _null_ ));
DESCR("less-than");
DATA(insert OID = 656 ( namele PGNSP PGUID 12 1 0 f f t f i 2 16 "19 19" _null_ _null_ _null_ namele - _null_ ));

6
src/include/utils/builtins.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.300 2007/08/21 01:11:30 tgl Exp $
* $PostgreSQL: pgsql/src/include/utils/builtins.h,v 1.301 2007/08/27 01:39:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -418,10 +418,6 @@ extern Datum pg_tablespace_databases(PG_FUNCTION_ARGS);
extern Datum pg_rotate_logfile(PG_FUNCTION_ARGS);
extern Datum pg_sleep(PG_FUNCTION_ARGS);
/* not_in.c */
extern Datum int4notin(PG_FUNCTION_ARGS);
extern Datum oidnotin(PG_FUNCTION_ARGS);
/* oid.c */
extern Datum oidin(PG_FUNCTION_ARGS);
extern Datum oidout(PG_FUNCTION_ARGS);