tdf#83877 Write SignatureLineId to ODF & OOXML signatures

Change-Id: I483a3b7895cdcb10ef9d6dacf167ed0f8db7e723
Reviewed-on: https://gerrit.libreoffice.org/54432
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

1 files changed, 22 insertions, 0 deletions

diff --git a/xmlsecurity/source/helper/xsecctl.cxx b/xmlsecurity/source/helper/xsecctl.cxx
index c10e9f0d3c50..0d97dd3456fb 100644
--- a/xmlsecurity/source/helper/xsecctl.cxx
+++ b/xmlsecurity/source/helper/xsecctl.cxx
@@ -856,6 +856,28 @@ void XSecController::exportSignature(
                         "dc:date");
                 }
                 xDocumentHandler->endElement( "SignatureProperty" );
+
+                if (!signatureInfo.ouSignatureLineId.isEmpty())
+                {
+                    pAttributeList = new SvXMLAttributeList();
+                    pAttributeList->AddAttribute(
+                        "xmlns:loext",
+                        "urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0");
+                    pAttributeList->AddAttribute("Target", "#" + signatureInfo.ouSignatureId);
+
+                    xDocumentHandler->startElement(
+                        "SignatureProperty",
+                        cssu::Reference<cssxs::XAttributeList>(pAttributeList));
+                    {
+                        // Write SignatureLineId element
+                        xDocumentHandler->startElement(
+                            "loext:SignatureLineId",
+                            cssu::Reference<cssxs::XAttributeList>(new SvXMLAttributeList()));
+                        xDocumentHandler->characters(signatureInfo.ouSignatureLineId);
+                        xDocumentHandler->endElement("loext:SignatureLineId");
+                    }
+                    xDocumentHandler->endElement("SignatureProperty");
+                }
             }
 
             // Write signature description.