[Libreoffice-commits] core.git: xmlsecurity/source

[Miklos Vajna]

 xmlsecurity/source/pdfio/pdfdocument.cxx |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

New commits:
commit bf64b4f1451896810b66fd6edf6175f0dd46ac44
Author: Miklos Vajna <vmiklos at collabora.co.uk>
Date:   Wed Nov 9 16:53:51 2016 +0100

    xmlsecurity PDF sign: compress the xref stream
    
    This way it's a bit smaller for large files and our output is closer to
    what Acrobat produces.
    
    Change-Id: Ide5f7b58a74a9d6ad7d806814eb57cb6931023cc
    Reviewed-on: https://gerrit.libreoffice.org/30726
    Tested-by: Jenkins <ci at libreoffice.org>
    Reviewed-by: Miklos Vajna <vmiklos at collabora.co.uk>

diff --git a/xmlsecurity/source/pdfio/pdfdocument.cxx b/xmlsecurity/source/pdfio/pdfdocument.cxx
index fa0d9cc..c73ee5d 100644
--- a/xmlsecurity/source/pdfio/pdfdocument.cxx
+++ b/xmlsecurity/source/pdfio/pdfdocument.cxx
@@ -738,7 +738,7 @@ bool PDFDocument::Sign(const uno::Reference<security::XCertificate>& xCertificat
         }
 
         m_aEditBuffer.WriteUInt32AsString(nXRefStreamId);
-        m_aEditBuffer.WriteCharPtr(" 0 obj\n<<");
+        m_aEditBuffer.WriteCharPtr(" 0 obj\n<</Filter/FlateDecode");
 
         // ID.
         auto pID = dynamic_cast<PDFArrayElement*>(m_pXRefStream->Lookup("ID"));
@@ -784,6 +784,18 @@ bool PDFDocument::Sign(const uno::Reference<security::XCertificate>& xCertificat
 
         // Length.
         m_aEditBuffer.WriteCharPtr("/Length ");
+        {
+            ZCodec aZCodec;
+            aZCodec.BeginCompression();
+            aXRefStream.Seek(0);
+            SvMemoryStream aStream;
+            aZCodec.Compress(aXRefStream, aStream);
+            aZCodec.EndCompression();
+            aXRefStream.Seek(0);
+            aXRefStream.SetStreamSize(0);
+            aStream.Seek(0);
+            aXRefStream.WriteStream(aStream);
+        }
         m_aEditBuffer.WriteUInt32AsString(aXRefStream.GetSize());
 
         if (!m_aStartXRefs.empty())