libxml2/Stop-checking-attributes-for-UTF-8-validity.patch
2021-05-29 17:30:59 +08:00

55 lines
1.8 KiB
Diff

From a6e6498fb1d11f08c394ecbf69add6cfff815db0 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Tue, 2 Mar 2021 13:09:06 +0100
Subject: [PATCH] Stop checking attributes for UTF-8 validity
I can't see a reason to check attribute content for UTF-8 validity.
Other parts of the API like xmlNewText have always assumed valid UTF-8
as extra checks only slow down processing.
Besides, setting doc->encoding to "ISO-8859-1" seems pointless, and not
freeing the old encoding would cause a memory leak.
Note that this was last changed in 2008 with commit 6f8611fd which
removed unnecessary encoding/decoding steps. Setting attributes should
be even faster now.
Found by OSS-Fuzz.
---
tree.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/tree.c b/tree.c
index 617e818..17db445 100644
--- a/tree.c
+++ b/tree.c
@@ -1901,12 +1901,6 @@ xmlNewPropInternal(xmlNodePtr node, xmlNsPtr ns,
if (value != NULL) {
xmlNodePtr tmp;
- if(!xmlCheckUTF8(value)) {
- xmlTreeErr(XML_TREE_NOT_UTF8, (xmlNodePtr) doc,
- NULL);
- if (doc != NULL)
- doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
- }
cur->children = xmlNewDocText(doc, value);
cur->last = NULL;
tmp = cur->children;
@@ -6945,12 +6939,6 @@ xmlSetNsProp(xmlNodePtr node, xmlNsPtr ns, const xmlChar *name,
if (value != NULL) {
xmlNodePtr tmp;
- if(!xmlCheckUTF8(value)) {
- xmlTreeErr(XML_TREE_NOT_UTF8, (xmlNodePtr) node->doc,
- NULL);
- if (node->doc != NULL)
- node->doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
- }
prop->children = xmlNewDocText(node->doc, value);
prop->last = NULL;
tmp = prop->children;
--
1.8.3.1