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34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Sadaf Ebrahimi <sadafebrahimi@google.com>
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Date: Wed, 16 Nov 2022 16:31:05 +0000
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Subject: [PATCH] Fix overeager DTD destruction (fixes #649)
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Bug: http://b/255449293
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Test: TreeHugger
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Change-Id: I15ba529c07a6b868484bd5972be154c07cd97cc6
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(cherry picked from commit eb8f10fb1f4eb13c5a2ba1edbfd64b5f2a50ff4a)
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Merged-In: I15ba529c07a6b868484bd5972be154c07cd97cc6
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---
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lib/xmlparse.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/lib/xmlparse.c b/lib/xmlparse.c
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index 956c2677..57c93e05 100644
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--- a/lib/xmlparse.c
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+++ b/lib/xmlparse.c
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@@ -855,6 +855,14 @@ parserCreate(const XML_Char *encodingName,
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parserInit(parser, encodingName);
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if (encodingName && !protocolEncodingName) {
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+ if (dtd) {
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+ // We need to stop the upcoming call to XML_ParserFree from happily
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+ // destroying parser->m_dtd because the DTD is shared with the parent
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+ // parser and the only guard that keeps XML_ParserFree from destroying
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+ // parser->m_dtd is parser->m_isParamEntity but it will be set to
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+ // XML_TRUE only later in XML_ExternalEntityParserCreate (or not at all).
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+ _dtd = NULL;
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+ }
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XML_ParserFree(parser);
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return NULL;
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}
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