gpg4libre: initial GPG signature generation

* takes XML-Sec signature template
* calculates digest for all added reference streams
* produces signature value over canonicalized signature template
* writes same as detached signature into template, streams that out

Change-Id: I303e080dc25c440175fe1ae897f03cf356d5d0f2
Reviewed-on: https://gerrit.libreoffice.org/36106
Reviewed-by: Siegmund Gorr <siegmund.gorr@cib.de>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

3 files changed, 171 insertions, 0 deletions

diff --git a/xmlsecurity/inc/xmlsec/errorcallback.hxx b/xmlsecurity/inc/xmlsec/errorcallback.hxx
new file mode 100644
index 000000000000..61f23aaa6b0e
--- /dev/null
+++ b/xmlsecurity/inc/xmlsec/errorcallback.hxx
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_XMLSECURITY_SOURCE_XMLSEC_ERRORCALLBACK_HXX
+#define INCLUDED_XMLSECURITY_SOURCE_XMLSEC_ERRORCALLBACK_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/xml/crypto/XXMLSignatureTemplate.hpp>
+#include <com/sun/star/xml/crypto/XXMLEncryptionTemplate.hpp>
+
+// Only used for logging
+void setErrorRecorder();
+//ToDo
+//void setErrorRecorder(const css::uno::Reference< css::xml::crypto::XXMLEncryptionTemplate >& xTemplate);
+void clearErrorRecorder();
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/xmlsecurity/inc/xmlsec/xmlelementwrapper_xmlsecimpl.hxx b/xmlsecurity/inc/xmlsec/xmlelementwrapper_xmlsecimpl.hxx
new file mode 100644
index 000000000000..1967370a3928
--- /dev/null
+++ b/xmlsecurity/inc/xmlsec/xmlelementwrapper_xmlsecimpl.hxx
@@ -0,0 +1,99 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_XMLSECURITY_SOURCE_XMLSEC_XMLELEMENTWRAPPER_XMLSECIMPL_HXX
+#define INCLUDED_XMLSECURITY_SOURCE_XMLSEC_XMLELEMENTWRAPPER_XMLSECIMPL_HXX
+
+#include <com/sun/star/xml/wrapper/XXMLElementWrapper.hpp>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <cppuhelper/implbase.hxx>
+
+#include <libxml/tree.h>
+#include <xsecxmlsecdllapi.h>
+
+namespace com { namespace sun { namespace star { namespace uno {
+    class XComponentContext;
+} } } }
+
+class XSECXMLSEC_DLLPUBLIC XMLElementWrapper_XmlSecImpl : public cppu::WeakImplHelper
+<
+    css::xml::wrapper::XXMLElementWrapper,
+    css::lang::XUnoTunnel,
+    css::lang::XServiceInfo
+>
+/****** XMLElementWrapper_XmlSecImpl.hxx/CLASS XMLElementWrapper_XmlSecImpl ***
+ *
+ *   NAME
+ *  XMLElementWrapper_XmlSecImpl -- Class to wrap a libxml2 node
+ *
+ *   FUNCTION
+ *  Used as a wrapper class to transfer a libxml2 node structure
+ *  between different UNO components.
+ ******************************************************************************/
+{
+private:
+    /* the libxml2 node wrapped by this object */
+    xmlNodePtr m_pElement;
+
+public:
+    explicit XMLElementWrapper_XmlSecImpl(const xmlNodePtr pNode);
+
+    /* XXMLElementWrapper */
+
+    /* css::lang::XUnoTunnel */
+    virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
+    /// @throws css::uno::RuntimeException
+    static css::uno::Sequence < sal_Int8 > getUnoTunnelImplementationId();
+
+    /* css::lang::XServiceInfo */
+    virtual OUString SAL_CALL getImplementationName(  ) override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames(  ) override;
+
+public:
+    /*
+    *   NAME
+    *  getNativeElement -- Retrieves the libxml2 node wrapped by this object
+    *
+    *   SYNOPSIS
+    *  pNode = getNativeElement();
+    *
+    *   RESULT
+    *  pNode - the libxml2 node wrapped by this object
+    */
+    xmlNodePtr getNativeElement( ) const { return m_pElement;}
+    void setNativeElement(const xmlNodePtr pNode);
+};
+
+/// @throws css::uno::RuntimeException
+OUString XMLElementWrapper_XmlSecImpl_getImplementationName();
+
+/// @throws css::uno::RuntimeException
+css::uno::Sequence< OUString > SAL_CALL XMLElementWrapper_XmlSecImpl_getSupportedServiceNames(  );
+
+/// @throws css::uno::Exception
+css::uno::Reference< css::uno::XInterface >
+SAL_CALL XMLElementWrapper_XmlSecImpl_createInstance(
+    const css::uno::Reference< css::uno::XComponentContext > &);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/xmlsecurity/inc/xmlsec/xmlstreamio.hxx b/xmlsecurity/inc/xmlsec/xmlstreamio.hxx
new file mode 100644
index 000000000000..6676dc68aeab
--- /dev/null
+++ b/xmlsecurity/inc/xmlsec/xmlstreamio.hxx
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_XMLSECURITY_SOURCE_XMLSEC_XMLSTREAMIO_HXX
+#define INCLUDED_XMLSECURITY_SOURCE_XMLSEC_XMLSTREAMIO_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/xml/crypto/XUriBinding.hpp>
+
+int xmlEnableStreamInputCallbacks() ;
+void xmlDisableStreamInputCallbacks() ;
+
+int xmlRegisterStreamInputCallbacks(
+    css::uno::Reference< css::xml::crypto::XUriBinding >& aUriBinding
+) ;
+
+int xmlUnregisterStreamInputCallbacks() ;
+
+#endif // INCLUDED_XMLSECURITY_SOURCE_XMLSEC_XMLSTREAMIO_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */