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Commitbe3aa30

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committed
Fix inadequate error checking: you can't assume that fcinfo->resultinfo
is a ReturnSetInfo unless you've tested it with IsA.
1 parent40d091b commitbe3aa30

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2 files changed

+45
-41
lines changed

2 files changed

+45
-41
lines changed

‎contrib/tablefunc/tablefunc.c

Lines changed: 21 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -687,9 +687,13 @@ crosstab_hash(PG_FUNCTION_ARGS)
687687
intnum_categories;
688688

689689
/* check to see if caller supports us returning a tuplestore */
690-
if (!rsinfo|| !(rsinfo->allowedModes&SFRM_Materialize))
690+
if (rsinfo==NULL|| !IsA(rsinfo,ReturnSetInfo))
691691
ereport(ERROR,
692-
(errcode(ERRCODE_SYNTAX_ERROR),
692+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
693+
errmsg("set-valued function called in context that cannot accept a set")));
694+
if (!(rsinfo->allowedModes&SFRM_Materialize))
695+
ereport(ERROR,
696+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
693697
errmsg("materialize mode required, but it is not " \
694698
"allowed in this context")));
695699

@@ -1049,9 +1053,13 @@ connectby_text(PG_FUNCTION_ARGS)
10491053
MemoryContextoldcontext;
10501054

10511055
/* check to see if caller supports us returning a tuplestore */
1052-
if (!rsinfo|| !(rsinfo->allowedModes&SFRM_Materialize))
1056+
if (rsinfo==NULL|| !IsA(rsinfo,ReturnSetInfo))
10531057
ereport(ERROR,
1054-
(errcode(ERRCODE_SYNTAX_ERROR),
1058+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1059+
errmsg("set-valued function called in context that cannot accept a set")));
1060+
if (!(rsinfo->allowedModes&SFRM_Materialize))
1061+
ereport(ERROR,
1062+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
10551063
errmsg("materialize mode required, but it is not " \
10561064
"allowed in this context")));
10571065

@@ -1076,13 +1084,6 @@ connectby_text(PG_FUNCTION_ARGS)
10761084
/* OK, use it then */
10771085
attinmeta=TupleDescGetAttInMetadata(tupdesc);
10781086

1079-
/* check to see if caller supports us returning a tuplestore */
1080-
if (!rsinfo|| !(rsinfo->allowedModes&SFRM_Materialize))
1081-
ereport(ERROR,
1082-
(errcode(ERRCODE_SYNTAX_ERROR),
1083-
errmsg("materialize mode required, but it is not " \
1084-
"allowed in this context")));
1085-
10861087
/* OK, go to work */
10871088
rsinfo->returnMode=SFRM_Materialize;
10881089
rsinfo->setResult=connectby(relname,
@@ -1131,9 +1132,15 @@ connectby_text_serial(PG_FUNCTION_ARGS)
11311132
MemoryContextoldcontext;
11321133

11331134
/* check to see if caller supports us returning a tuplestore */
1134-
if (!rsinfo|| !(rsinfo->allowedModes&SFRM_Materialize))
1135-
elog(ERROR,"connectby: materialize mode required, but it is not "
1136-
"allowed in this context");
1135+
if (rsinfo==NULL|| !IsA(rsinfo,ReturnSetInfo))
1136+
ereport(ERROR,
1137+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1138+
errmsg("set-valued function called in context that cannot accept a set")));
1139+
if (!(rsinfo->allowedModes&SFRM_Materialize))
1140+
ereport(ERROR,
1141+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
1142+
errmsg("materialize mode required, but it is not " \
1143+
"allowed in this context")));
11371144

11381145
if (fcinfo->nargs==7)
11391146
{
@@ -1156,11 +1163,6 @@ connectby_text_serial(PG_FUNCTION_ARGS)
11561163
/* OK, use it then */
11571164
attinmeta=TupleDescGetAttInMetadata(tupdesc);
11581165

1159-
/* check to see if caller supports us returning a tuplestore */
1160-
if (!rsinfo->allowedModes&SFRM_Materialize)
1161-
elog(ERROR,"connectby requires Materialize mode, but it is not "
1162-
"allowed in this context");
1163-
11641166
/* OK, go to work */
11651167
rsinfo->returnMode=SFRM_Materialize;
11661168
rsinfo->setResult=connectby(relname,

‎contrib/xml2/xpath.c

Lines changed: 24 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -669,23 +669,36 @@ xpath_table(PG_FUNCTION_ARGS)
669669

670670
StringInfoquerysql;
671671

672-
/* We only have a valid tuple description in table function mode */
672+
/* We only have a valid tuple description in table function mode */
673+
if (rsinfo==NULL|| !IsA(rsinfo,ReturnSetInfo))
674+
ereport(ERROR,
675+
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
676+
errmsg("set-valued function called in context that cannot accept a set")));
673677
if (rsinfo->expectedDesc==NULL)
674-
{
675-
ereport(ERROR, (errcode(ERRCODE_SYNTAX_ERROR),
676-
errmsg("xpath_table must be called as a table function")));
677-
}
678+
ereport(ERROR,
679+
(errcode(ERRCODE_SYNTAX_ERROR),
680+
errmsg("xpath_table must be called as a table function")));
678681

679-
/* The tuplestore must exist in a higher context than
680-
* this function call (per_query_ctx is used) */
682+
/*
683+
* We want to materialise because it means that we don't have to carry
684+
* libxml2 parser state between invocations of this function
685+
*/
686+
if (!(rsinfo->allowedModes&SFRM_Materialize))
687+
ereport(ERROR,
688+
(errcode(ERRCODE_SYNTAX_ERROR),
689+
errmsg("xpath_table requires Materialize mode, but it is not "
690+
"allowed in this context")));
691+
692+
/* The tuplestore must exist in a higher context than
693+
* this function call (per_query_ctx is used)
694+
*/
681695

682696
per_query_ctx=rsinfo->econtext->ecxt_per_query_memory;
683697
oldcontext=MemoryContextSwitchTo(per_query_ctx);
684698

685-
/* Create the tuplestore - work_mem is the max in-memory size before a
686-
* file is created on disk to hold it.
687-
*/
688-
699+
/* Create the tuplestore - work_mem is the max in-memory size before a
700+
* file is created on disk to hold it.
701+
*/
689702
tupstore=tuplestore_begin_heap(true, false,work_mem);
690703

691704
MemoryContextSwitchTo(oldcontext);
@@ -703,17 +716,6 @@ xpath_table(PG_FUNCTION_ARGS)
703716

704717
attinmeta=TupleDescGetAttInMetadata(ret_tupdesc);
705718

706-
/*
707-
* We want to materialise because it means that we don't have to carry
708-
* libxml2 parser state between invocations of this function
709-
*/
710-
711-
/* check to see if caller supports us returning a tuplestore */
712-
if (!rsinfo|| !(rsinfo->allowedModes&SFRM_Materialize))
713-
ereport(ERROR, (errcode(ERRCODE_SYNTAX_ERROR),
714-
errmsg("xpath_table requires Materialize mode, but it is not "
715-
"allowed in this context")));
716-
717719
/* Set return mode and allocate value space. */
718720
rsinfo->returnMode=SFRM_Materialize;
719721
rsinfo->setDesc=ret_tupdesc;

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