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Require SELECT privilege on a table to do dblink_get_pkey(). This is 

not all that exciting when the system catalogs are readable by all,
but some people try to lock them down, and would not like this sort of
end run ...
This commit is contained in:
Tom Lane 2007-08-27 01:24:50 +00:00
parent cc26599b72
commit a41e46b261
1 changed files with 11 additions and 2 deletions
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13
contrib/dblink/dblink.c
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@ -8,7 +8,7 @@
* Darko Prenosil <Darko.Prenosil@finteh.hr>
* Shridhar Daithankar <shridhar_daithankar@persistent.co.in>
*
* $PostgreSQL: pgsql/contrib/dblink/dblink.c,v 1.64 2007/07/08 17:12:38 joe Exp $
* $PostgreSQL: pgsql/contrib/dblink/dblink.c,v 1.65 2007/08/27 01:24:50 tgl Exp $
* Copyright (c) 2001-2007, PostgreSQL Global Development Group
* ALL RIGHTS RESERVED;
*
@ -51,6 +51,7 @@
#include "nodes/pg_list.h"
#include "parser/parse_type.h"
#include "tcop/tcopprot.h"
#include "utils/acl.h"
#include "utils/array.h"
#include "utils/builtins.h"
#include "utils/dynahash.h"
@ -1686,9 +1687,17 @@ get_pkey_attnames(Oid relid, int16 *numatts)
char **result = NULL;
Relation rel;
TupleDesc tupdesc;
AclResult aclresult;
/* open relation using relid, get tupdesc */
/* open relation using relid, check permissions, get tupdesc */
rel = relation_open(relid, AccessShareLock);
aclresult = pg_class_aclcheck(RelationGetRelid(rel), GetUserId(),
ACL_SELECT);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_CLASS,
RelationGetRelationName(rel));
tupdesc = rel->rd_att;
/* initialize numatts to 0 in case no primary key exists */