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Fix inadequate error checking: you can't assume that fcinfo->resultinfo 

is a ReturnSetInfo unless you've tested it with IsA.
This commit is contained in:
Tom Lane 2005-07-09 01:53:22 +00:00
parent 40d091b818
commit be3aa30da3
2 changed files with 45 additions and 41 deletions
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40
contrib/tablefunc/tablefunc.c
View File

@ -687,9 +687,13 @@ crosstab_hash(PG_FUNCTION_ARGS)
int num_categories;
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo || !(rsinfo->allowedModes & SFRM_Materialize))
if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("set-valued function called in context that cannot accept a set")));
if (!(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("materialize mode required, but it is not " \
"allowed in this context")));
@ -1049,9 +1053,13 @@ connectby_text(PG_FUNCTION_ARGS)
MemoryContext oldcontext;
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo || !(rsinfo->allowedModes & SFRM_Materialize))
if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("set-valued function called in context that cannot accept a set")));
if (!(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("materialize mode required, but it is not " \
"allowed in this context")));
@ -1076,13 +1084,6 @@ connectby_text(PG_FUNCTION_ARGS)
/* OK, use it then */
attinmeta = TupleDescGetAttInMetadata(tupdesc);
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo || !(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("materialize mode required, but it is not " \
"allowed in this context")));
/* OK, go to work */
rsinfo->returnMode = SFRM_Materialize;
rsinfo->setResult = connectby(relname,
@ -1131,9 +1132,15 @@ connectby_text_serial(PG_FUNCTION_ARGS)
MemoryContext oldcontext;
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo || !(rsinfo->allowedModes & SFRM_Materialize))
elog(ERROR, "connectby: materialize mode required, but it is not "
"allowed in this context");
if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("set-valued function called in context that cannot accept a set")));
if (!(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("materialize mode required, but it is not " \
"allowed in this context")));
if (fcinfo->nargs == 7)
{
@ -1156,11 +1163,6 @@ connectby_text_serial(PG_FUNCTION_ARGS)
/* OK, use it then */
attinmeta = TupleDescGetAttInMetadata(tupdesc);
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo->allowedModes & SFRM_Materialize)
elog(ERROR, "connectby requires Materialize mode, but it is not "
"allowed in this context");
/* OK, go to work */
rsinfo->returnMode = SFRM_Materialize;
rsinfo->setResult = connectby(relname,

46
contrib/xml2/xpath.c
View File

@ -669,23 +669,36 @@ xpath_table(PG_FUNCTION_ARGS)
StringInfo querysql;
/* We only have a valid tuple description in table function mode */
/* We only have a valid tuple description in table function mode */
if (rsinfo == NULL || !IsA(rsinfo, ReturnSetInfo))
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("set-valued function called in context that cannot accept a set")));
if (rsinfo->expectedDesc == NULL)
{
ereport(ERROR, (errcode(ERRCODE_SYNTAX_ERROR),
errmsg("xpath_table must be called as a table function")));
}
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("xpath_table must be called as a table function")));
/* The tuplestore must exist in a higher context than
* this function call (per_query_ctx is used) */
/*
* We want to materialise because it means that we don't have to carry
* libxml2 parser state between invocations of this function
*/
if (!(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR),
errmsg("xpath_table requires Materialize mode, but it is not "
"allowed in this context")));
/* The tuplestore must exist in a higher context than
* this function call (per_query_ctx is used)
*/
per_query_ctx = rsinfo->econtext->ecxt_per_query_memory;
oldcontext = MemoryContextSwitchTo(per_query_ctx);
/* Create the tuplestore - work_mem is the max in-memory size before a
* file is created on disk to hold it.
*/
/* Create the tuplestore - work_mem is the max in-memory size before a
* file is created on disk to hold it.
*/
tupstore = tuplestore_begin_heap(true, false, work_mem);
MemoryContextSwitchTo(oldcontext);
@ -703,17 +716,6 @@ xpath_table(PG_FUNCTION_ARGS)
attinmeta = TupleDescGetAttInMetadata(ret_tupdesc);
/*
* We want to materialise because it means that we don't have to carry
* libxml2 parser state between invocations of this function
*/
/* check to see if caller supports us returning a tuplestore */
if (!rsinfo || !(rsinfo->allowedModes & SFRM_Materialize))
ereport(ERROR, (errcode(ERRCODE_SYNTAX_ERROR),
errmsg("xpath_table requires Materialize mode, but it is not "
"allowed in this context")));
/* Set return mode and allocate value space. */
rsinfo->returnMode = SFRM_Materialize;
rsinfo->setDesc = ret_tupdesc;