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Some time ago John Gray <jgray@azuli.co.uk> and myself worked out and 

tested a patch to contrib/xml where the existing code was causing
postgres to crash when it encountered & entities in the XML. I've
enclosed a patch that John came up with to correct this problem. It
patches against 7.3 and will apply on 7.2x if the elog WARNING calls
are changed to elog NOTICE.

Michael Richards
This commit is contained in:
Bruce Momjian 2002-12-06 03:44:14 +00:00
parent 5b4c16e099
commit 87cba401a4
1 changed files with 7 additions and 4 deletions
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11
contrib/xml/pgxml_dom.c
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@ -87,10 +87,10 @@ pgxml_parse(PG_FUNCTION_ARGS)
doctree = xmlParseMemory((char *) VARDATA(t), docsize);
if (doctree == NULL)
{
/* xmlCleanupParser(); */
xmlCleanupParser();
PG_RETURN_BOOL(false); /* i.e. not well-formed */
}
/* xmlCleanupParser(); */
xmlCleanupParser();
xmlFreeDoc(doctree);
PG_RETURN_BOOL(true);
}
@ -202,7 +202,8 @@ pgxml_xpath(PG_FUNCTION_ARGS)
doctree = xmlParseMemory((char *) VARDATA(t), docsize);
if (doctree == NULL)
{ /* not well-formed */
{ /* not well-formed */
xmlCleanupParser();
PG_RETURN_NULL();
}
@ -216,6 +217,7 @@ pgxml_xpath(PG_FUNCTION_ARGS)
elog(WARNING, "XPath syntax error");
xmlFreeDoc(doctree);
pfree((void *) xpath);
xmlCleanupParser();
PG_RETURN_NULL();
}
@ -227,6 +229,7 @@ pgxml_xpath(PG_FUNCTION_ARGS)
{
xmlFreeDoc(doctree);
pfree((void *) xpath);
xmlCleanupParser();
PG_RETURN_NULL(); /* seems appropriate */
}
/* now we dump this node, ?surrounding by tags? */
@ -257,6 +260,6 @@ pgxml_xpath(PG_FUNCTION_ARGS)
xmlFreeDoc(doctree);
pfree((void *) xpath);
xmlFree(xpresstr);
xmlCleanupParser();
PG_RETURN_TEXT_P(xpres);
}