sax/source/fastparser/fastparser.cxx | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
New commits:
commit cd85546a2fbdade42f80fd3b6bd650791db9f32d
Author: Miklos Vajna <vmik...@collabora.com>
AuthorDate: Mon Sep 28 21:05:27 2020 +0200
Commit: Miklos Vajna <vmik...@collabora.com>
CommitDate: Tue Sep 29 09:06:07 2020 +0200
tdf#136551 DOTX import: restore support for large XML attribute values
Regression from commit 82d08580e368afbc9d73da3613845a36a89b0a8c (switch
saxparser from expat to libxml2, 2014-11-14), expat used to allow huge
XML attribute values, while libxml2 defaults to rejecting values larger
than 10MB.
This looks like a sane limit, but the bugdoc has some fallback VML
markup where the actual graphic content of the shape is base64-encoded
in an XML attribute value.
libxml2 has an XML_PARSE_HUGE flag to lift this limit, so use that. If
this was not a problem with expat, then it should be no problem with
libxml2, either.
[ No testcase, adding a 10MB test document to the repo is not preferred. ]
Change-Id: Ifcd0ce52d3cb95bef36c58aa073bb59bc07490d6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103567
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmik...@collabora.com>
diff --git a/sax/source/fastparser/fastparser.cxx
b/sax/source/fastparser/fastparser.cxx
index a10ccdbcae24..2b713b81576e 100644
--- a/sax/source/fastparser/fastparser.cxx
+++ b/sax/source/fastparser/fastparser.cxx
@@ -1061,8 +1061,10 @@ void FastSaxParserImpl::parse()
throw SAXException("Couldn't create parser", Reference<
XInterface >(), Any() );
// Tell libxml2 parser to decode entities in attribute values.
+ // Also allow XML attribute values which are larger than 10MB,
because this used to work
+ // with expat.
// coverity[unsafe_xml_parse_config] - entity support is required
- xmlCtxtUseOptions(rEntity.mpParser, XML_PARSE_NOENT);
+ xmlCtxtUseOptions(rEntity.mpParser, XML_PARSE_NOENT |
XML_PARSE_HUGE);
}
else
{
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