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| author | Miklos Vajna <vmiklos@collabora.co.uk> | 2016-10-27 17:34:35 +0200 |
|---|---|---|
| committer | Miklos Vajna <vmiklos@collabora.co.uk> | 2016-10-27 20:21:02 +0200 |
| commit | 4beac67a2ba1e63e2b47ab54a34cb3e9af77b593 (patch) | |
| tree | 46755fbf76adf2590fe2dfcae90260bbc3abde66 /xmlsecurity | |
| parent | 4433d95b374c13a3501cdf3a6e273f68eb49873a (diff) | |
xmlsecurity PDF verify: handle missing trailer
Support for Cross-Reference Streams is still missing, but this avoids
a crash at least.
Change-Id: I8c5d16531f8603feeebe8feddb7c3bdfa61943cb
Diffstat (limited to 'xmlsecurity')
| -rw-r--r-- | xmlsecurity/source/pdfio/pdfdocument.cxx | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/xmlsecurity/source/pdfio/pdfdocument.cxx b/xmlsecurity/source/pdfio/pdfdocument.cxx index a0e00ef8f3f5..1ca73618cff5 100644 --- a/xmlsecurity/source/pdfio/pdfdocument.cxx +++ b/xmlsecurity/source/pdfio/pdfdocument.cxx @@ -909,6 +909,13 @@ bool PDFDocument::Read(SvStream& rStream) SAL_WARN("xmlsecurity.pdfio", "PDFDocument::Read: failed to tokenizer trailer after xref"); return false; } + + if (!m_pTrailer) + { + SAL_WARN("xmlsecurity.pdfio", "PDFDocument::Read: found no trailer"); + return false; + } + auto pPrev = dynamic_cast<PDFNumberElement*>(m_pTrailer->Lookup("Prev")); if (pPrev) nStartXRef = pPrev->GetValue(); |