diff options
Diffstat (limited to 'xmlsecurity/source/pdfio/pdfdocument.cxx')
| -rw-r--r-- | xmlsecurity/source/pdfio/pdfdocument.cxx | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/xmlsecurity/source/pdfio/pdfdocument.cxx b/xmlsecurity/source/pdfio/pdfdocument.cxx index 3766e4d3d5f3..4711084dde50 100644 --- a/xmlsecurity/source/pdfio/pdfdocument.cxx +++ b/xmlsecurity/source/pdfio/pdfdocument.cxx @@ -215,7 +215,17 @@ PDFDocument::PDFDocument() bool PDFDocument::Read(SvStream& rStream) { - // First look up the offset of the xref table. + // Check file magic. + std::vector<sal_Int8> aHeader(5); + rStream.Seek(0); + rStream.ReadBytes(aHeader.data(), aHeader.size()); + if (aHeader[0] != '%' || aHeader[1] != 'P' || aHeader[2] != 'D' || aHeader[3] != 'F' || aHeader[4] != '-') + { + SAL_WARN("xmlsecurity.pdfio", "PDFDocument::Read: header mismatch"); + return false; + } + + // Look up the offset of the xref table. size_t nStartXRef = FindStartXRef(rStream); SAL_INFO("xmlsecurity.pdfio", "PDFDocument::Read: nStartXRef is " << nStartXRef); if (nStartXRef == 0) |