cool#9992 lok doc sign, hash extract: time for getCommandValues('Signature')

The final goal of this API is to give time & hash information about the
PDF signature, so once a 3rd-party produces the PKCS#7 signature, that
can be added to the document and the actual PDF sign can be re-run with
the same parameters.

This commit continues the replacement of XCertificate with
svl::crypto::SigningContext up to the point that the timestamp used in
svl/ can be exposed on the LOK API.

This is done by updating DocumentSignatureManager::add(),
PDFSignatureHelper::SetX509Certificate(),
vcl::filter::PDFDocument::Sign() and finally the svl::crypto::Signing
ctor to work with the signing context instead of an XCertificate
directly.

Time reporting works now, so add a test for that. The digest part still
needs doing.

Change-Id: I83f1274cd420b67194b7caf12b1027e623d4f7fe
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/176404
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

2 files changed, 11 insertions, 3 deletions

diff --git a/xmlsecurity/inc/documentsignaturemanager.hxx b/xmlsecurity/inc/documentsignaturemanager.hxx
index 56597106f9c1..3cf2151883d8 100644
--- a/xmlsecurity/inc/documentsignaturemanager.hxx
+++ b/xmlsecurity/inc/documentsignaturemanager.hxx
@@ -53,6 +53,10 @@ namespace uno
 class XComponentContext;
 }
 }
+namespace svl::crypto
+{
+class SigningContext;
+}
 class PDFSignatureHelper;
 class Xmlsec;
 
@@ -93,7 +97,7 @@ public:
 
     SignatureStreamHelper ImplOpenSignatureStream(sal_Int32 nStreamOpenMode, bool bTempStream);
     /// Add a new signature, using xCert as a signing certificate, and rDescription as description.
-    bool add(const css::uno::Reference<css::security::XCertificate>& xCert,
+    bool add(svl::crypto::SigningContext& rSigningContext,
              const css::uno::Reference<css::xml::crypto::XXMLSecurityContext>& xSecurityContext,
              const OUString& rDescription, sal_Int32& nSecurityId, bool bAdESCompliant,
              const OUString& rSignatureLineId = OUString(),
diff --git a/xmlsecurity/inc/pdfsignaturehelper.hxx b/xmlsecurity/inc/pdfsignaturehelper.hxx
index ea24685d2ae4..a20598131db1 100644
--- a/xmlsecurity/inc/pdfsignaturehelper.hxx
+++ b/xmlsecurity/inc/pdfsignaturehelper.hxx
@@ -37,6 +37,10 @@ namespace xml::crypto
 class XSecurityEnvironment;
 }
 }
+namespace svl::crypto
+{
+class SigningContext;
+}
 class SvStream;
 
 /// Handles signatures of a PDF file.
@@ -44,7 +48,7 @@ class XMLSECURITY_DLLPUBLIC PDFSignatureHelper
 {
     SignatureInformations m_aSignatureInfos;
 
-    css::uno::Reference<css::security::XCertificate> m_xCertificate;
+    svl::crypto::SigningContext* m_pSigningContext = nullptr;
     OUString m_aDescription;
 
 public:
@@ -59,7 +63,7 @@ public:
     /// Return the ID of the next created signature.
     sal_Int32 GetNewSecurityId() const;
     /// Certificate to be used next time signing is performed.
-    void SetX509Certificate(const css::uno::Reference<css::security::XCertificate>& xCertificate);
+    void SetX509Certificate(svl::crypto::SigningContext& rSigningContext);
     /// Comment / reason to be used next time signing is performed.
     void SetDescription(const OUString& rDescription);
     /// Append a new signature at the end of xInputStream.