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libxml2: Check for xmlDocDumpFormatMemory() error case

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Since this function needs to allocate memory, it might fail. Check that
the returned memory pointer is not NULL before trying to parse the
output.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2016-03-16 21:49:28 +02:00 committed by Jouni Malinen
parent 8b827c342f
commit 64ce5905f8
1 changed files with 2 additions and 0 deletions
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2
src/utils/xml_libxml2.c
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@ -212,6 +212,8 @@ char * xml_node_to_str(struct xml_node_ctx *ctx, xml_node_t *node)
xmlDocSetRootElement(doc, n);
xmlDocDumpFormatMemory(doc, &buf, &bufsiz, 0);
xmlFreeDoc(doc);
if (!buf)
return NULL;
pos = (char *) buf;
if (strncmp(pos, "<?xml", 5) == 0) {
pos = strchr(pos, '>');