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tree: Handle predefined entities in xmlBufGetEntityRefContent

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It's possible to create references to predefined entities using the tree
API. This edge case was exposed by making predefined entities const in
commit 63ce5f9a.
This commit is contained in:
Nick Wellnhofer 2024-04-30 15:58:01 +02:00
parent 619e2808b5
commit b8597f46df
2 changed files with 30 additions and 0 deletions
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20
testparser.c
View File

@ -59,6 +59,25 @@ testUnsupportedEncoding(void) {
return err;
}
static int
testNodeGetContent(void) {
xmlDocPtr doc;
xmlChar *content;
int err = 0;
doc = xmlReadDoc(BAD_CAST "<doc/>", NULL, NULL, 0);
xmlAddChild(doc->children, xmlNewReference(doc, BAD_CAST "lt"));
content = xmlNodeGetContent((xmlNodePtr) doc);
if (strcmp((char *) content, "<") != 0) {
fprintf(stderr, "xmlNodeGetContent failed\n");
err = 1;
}
xmlFree(content);
xmlFreeDoc(doc);
return err;
}
#ifdef LIBXML_SAX1_ENABLED
static int
testBalancedChunk(void) {
@ -373,6 +392,7 @@ main(void) {
err |= testStandaloneWithEncoding();
err |= testUnsupportedEncoding();
err |= testNodeGetContent();
#ifdef LIBXML_SAX1_ENABLED
err |= testBalancedChunk();
#endif

10
tree.c
View File

@ -5504,6 +5504,16 @@ xmlBufGetEntityRefContent(xmlBufPtr buf, const xmlNode *ref) {
return;
}
/*
* The parser should always expand predefined entities but it's
* possible to create references to predefined entities using
* the tree API.
*/
if (ent->etype == XML_INTERNAL_PREDEFINED_ENTITY) {
xmlBufCat(buf, ent->content);
return;
}
if (ent->flags & XML_ENT_EXPANDING)
return;