1 files changed, 305 insertions, 0 deletions
diff --git a/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
new file mode 100644
index 000000000..dcbad0348
--- /dev/null
+++ b/xmlsecurity/source/xmlsec/mscrypt/xmlsignature_mscryptimpl.cxx
@@ -0,0 +1,305 @@
+/* -*- 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 .
+ */
+
+#include <sal/config.h>
+#include <rtl/uuid.h>
+#include <xmlsec-wrapper.h>
+
+#include <com/sun/star/xml/crypto/SecurityOperationStatus.hpp>
+#include <com/sun/star/xml/crypto/XXMLSignature.hpp>
+
+#include "securityenvironment_mscryptimpl.hxx"
+
+#include <xmlsec/xmldocumentwrapper_xmlsecimpl.hxx>
+#include <xmlelementwrapper_xmlsecimpl.hxx>
+#include <xmlsec/xmlstreamio.hxx>
+#include <xmlsec/errorcallback.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno ;
+using namespace ::com::sun::star::lang ;
+using ::com::sun::star::lang::XMultiServiceFactory ;
+using ::com::sun::star::lang::XSingleServiceFactory ;
+
+using ::com::sun::star::xml::wrapper::XXMLElementWrapper ;
+using ::com::sun::star::xml::wrapper::XXMLDocumentWrapper ;
+using ::com::sun::star::xml::crypto::XSecurityEnvironment ;
+using ::com::sun::star::xml::crypto::XXMLSignature ;
+using ::com::sun::star::xml::crypto::XXMLSignatureTemplate ;
+using ::com::sun::star::xml::crypto::XXMLSecurityContext ;
+using ::com::sun::star::xml::crypto::XUriBinding ;
+
+namespace {
+
+class XMLSignature_MSCryptImpl : public ::cppu::WeakImplHelper<
+    css::xml::crypto::XXMLSignature ,
+    css::lang::XServiceInfo >
+{
+    public:
+        explicit XMLSignature_MSCryptImpl();
+
+        //Methods from XXMLSignature
+        virtual css::uno::Reference< css::xml::crypto::XXMLSignatureTemplate > SAL_CALL generate(
+            const css::uno::Reference< css::xml::crypto::XXMLSignatureTemplate >& aTemplate ,
+            const css::uno::Reference< css::xml::crypto::XSecurityEnvironment >& aEnvironment
+        ) override;
+
+        virtual css::uno::Reference< css::xml::crypto::XXMLSignatureTemplate > SAL_CALL validate(
+            const css::uno::Reference< css::xml::crypto::XXMLSignatureTemplate >& aTemplate ,
+            const css::uno::Reference< css::xml::crypto::XXMLSecurityContext >& aContext
+        ) override;
+
+        //Methods from 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;
+} ;
+
+}
+
+XMLSignature_MSCryptImpl::XMLSignature_MSCryptImpl() {
+}
+
+/* XXMLSignature */
+Reference< XXMLSignatureTemplate >
+SAL_CALL XMLSignature_MSCryptImpl::generate(
+    const Reference< XXMLSignatureTemplate >& aTemplate ,
+    const Reference< XSecurityEnvironment >& aEnvironment
+)
+{
+    xmlSecKeysMngrPtr pMngr = nullptr ;
+    xmlSecDSigCtxPtr pDsigCtx = nullptr ;
+    xmlNodePtr pNode = nullptr ;
+
+    if( !aTemplate.is() )
+        throw RuntimeException() ;
+
+    if( !aEnvironment.is() )
+        throw RuntimeException() ;
+
+    //Get Keys Manager
+    Reference< XUnoTunnel > xSecTunnel( aEnvironment , UNO_QUERY_THROW ) ;
+    SecurityEnvironment_MSCryptImpl* pSecEnv = reinterpret_cast<SecurityEnvironment_MSCryptImpl*>(xSecTunnel->getSomething( SecurityEnvironment_MSCryptImpl::getUnoTunnelId() ));
+    if( pSecEnv == nullptr )
+        throw RuntimeException() ;
+
+    //Get the xml node
+    Reference< XXMLElementWrapper > xElement = aTemplate->getTemplate() ;
+    if( !xElement.is() ) {
+        throw RuntimeException() ;
+    }
+
+    Reference< XUnoTunnel > xNodTunnel( xElement , UNO_QUERY_THROW ) ;
+    XMLElementWrapper_XmlSecImpl* pElement = reinterpret_cast<XMLElementWrapper_XmlSecImpl*>(xNodTunnel->getSomething( XMLElementWrapper_XmlSecImpl::getUnoTunnelId() ));
+    if( pElement == nullptr ) {
+        throw RuntimeException() ;
+    }
+
+    pNode = pElement->getNativeElement() ;
+
+    //Get the stream/URI binding
+    Reference< XUriBinding > xUriBinding = aTemplate->getBinding() ;
+    if( xUriBinding.is() ) {
+        //Register the stream input callbacks into libxml2
+        if( xmlRegisterStreamInputCallbacks( xUriBinding ) < 0 )
+            throw RuntimeException() ;
+    }
+
+    setErrorRecorder( );
+
+    pMngr = pSecEnv->createKeysManager();
+    if( !pMngr ) {
+        throw RuntimeException() ;
+    }
+
+    //Create Signature context
+    pDsigCtx = xmlSecDSigCtxCreate( pMngr ) ;
+    if( pDsigCtx == nullptr )
+    {
+        //throw XMLSignatureException() ;
+        SecurityEnvironment_MSCryptImpl::destroyKeysManager( pMngr );
+        clearErrorRecorder();
+        return aTemplate;
+    }
+
+    //Sign the template
+    if( xmlSecDSigCtxSign( pDsigCtx , pNode ) == 0 )
+    {
+        if (pDsigCtx->status == xmlSecDSigStatusSucceeded)
+            aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_OPERATION_SUCCEEDED);
+        else
+            aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_UNKNOWN);
+    }
+    else
+    {
+        aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_UNKNOWN);
+    }
+
+
+    xmlSecDSigCtxDestroy( pDsigCtx ) ;
+    SecurityEnvironment_MSCryptImpl::destroyKeysManager( pMngr );
+
+    //Unregistered the stream/URI binding
+    if( xUriBinding.is() )
+        xmlUnregisterStreamInputCallbacks() ;
+
+    clearErrorRecorder();
+    return aTemplate ;
+}
+
+/* XXMLSignature */
+Reference< XXMLSignatureTemplate >
+SAL_CALL XMLSignature_MSCryptImpl::validate(
+    const Reference< XXMLSignatureTemplate >& aTemplate ,
+    const Reference< XXMLSecurityContext >& aSecurityCtx
+) {
+    xmlSecKeysMngrPtr pMngr = nullptr ;
+    xmlSecDSigCtxPtr pDsigCtx = nullptr ;
+    xmlNodePtr pNode = nullptr ;
+
+    if( !aTemplate.is() )
+        throw RuntimeException() ;
+
+    if( !aSecurityCtx.is() )
+        throw RuntimeException() ;
+
+    //Get Keys Manager
+    Reference< XSecurityEnvironment > xSecEnv
+        = aSecurityCtx->getSecurityEnvironmentByIndex(
+            aSecurityCtx->getDefaultSecurityEnvironmentIndex());
+    Reference< XUnoTunnel > xSecTunnel( xSecEnv , UNO_QUERY_THROW ) ;
+    SecurityEnvironment_MSCryptImpl* pSecEnv = reinterpret_cast<SecurityEnvironment_MSCryptImpl*>(xSecTunnel->getSomething( SecurityEnvironment_MSCryptImpl::getUnoTunnelId() ));
+    if( pSecEnv == nullptr )
+        throw RuntimeException() ;
+
+    //Get the xml node
+    Reference< XXMLElementWrapper > xElement = aTemplate->getTemplate() ;
+    if( !xElement.is() )
+        throw RuntimeException() ;
+
+    Reference< XUnoTunnel > xNodTunnel( xElement , UNO_QUERY_THROW ) ;
+    XMLElementWrapper_XmlSecImpl* pElement = reinterpret_cast<XMLElementWrapper_XmlSecImpl*>(xNodTunnel->getSomething( XMLElementWrapper_XmlSecImpl::getUnoTunnelId() ));
+    if( pElement == nullptr )
+        throw RuntimeException() ;
+
+    pNode = pElement->getNativeElement() ;
+
+    //Get the stream/URI binding
+    Reference< XUriBinding > xUriBinding = aTemplate->getBinding() ;
+    if( xUriBinding.is() ) {
+        //Register the stream input callbacks into libxml2
+        if( xmlRegisterStreamInputCallbacks( xUriBinding ) < 0 )
+            throw RuntimeException() ;
+    }
+
+    setErrorRecorder( );
+
+    pMngr = pSecEnv->createKeysManager();
+    if( !pMngr ) {
+        throw RuntimeException() ;
+    }
+
+    //Create Signature context
+    pDsigCtx = xmlSecDSigCtxCreate( pMngr ) ;
+    if( pDsigCtx == nullptr )
+    {
+        SecurityEnvironment_MSCryptImpl::destroyKeysManager( pMngr );
+        clearErrorRecorder();
+        return aTemplate;
+    }
+
+    // We do certificate verification ourselves.
+    pDsigCtx->keyInfoReadCtx.flags |= XMLSEC_KEYINFO_FLAGS_X509DATA_DONT_VERIFY_CERTS;
+
+    //Verify signature
+    //The documentation says that the signature is only valid if the return value is 0 (that is, not < 0)
+    //AND pDsigCtx->status == xmlSecDSigStatusSucceeded. That is, we must not make any assumptions, if
+    //the return value is < 0. Then we must regard the signature as INVALID. We cannot use the
+    //error recorder feature to get the ONE error that made the verification fail, because there is no
+    //documentation/specification as to how to interpret the number of recorded errors and what is the initial
+    //error.
+    int rs = xmlSecDSigCtxVerify(pDsigCtx , pNode);
+
+    // Also verify manifest: this is empty for ODF, but contains everything (except signature metadata) for OOXML.
+    xmlSecSize nReferenceCount = xmlSecPtrListGetSize(&pDsigCtx->manifestReferences);
+    // Require that all manifest references are also good.
+    xmlSecSize nReferenceGood = 0;
+    for (xmlSecSize nReference = 0; nReference < nReferenceCount; ++nReference)
+    {
+        xmlSecDSigReferenceCtxPtr pReference = static_cast<xmlSecDSigReferenceCtxPtr>(xmlSecPtrListGetItem(&pDsigCtx->manifestReferences, nReference));
+        if (pReference)
+        {
+             if (pReference->status == xmlSecDSigStatusSucceeded)
+                 ++nReferenceGood;
+        }
+    }
+
+    if (rs == 0 && nReferenceCount == nReferenceGood)
+    {
+        if (pDsigCtx->status == xmlSecDSigStatusSucceeded)
+            aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_OPERATION_SUCCEEDED);
+        else
+            aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_UNKNOWN);
+    }
+    else
+    {
+        aTemplate->setStatus(css::xml::crypto::SecurityOperationStatus_UNKNOWN);
+    }
+
+    xmlSecDSigCtxDestroy( pDsigCtx ) ;
+    SecurityEnvironment_MSCryptImpl::destroyKeysManager( pMngr );
+
+    //Unregistered the stream/URI binding
+    if( xUriBinding.is() )
+        xmlUnregisterStreamInputCallbacks() ;
+
+
+    clearErrorRecorder();
+    return aTemplate;
+}
+
+/* XServiceInfo */
+OUString SAL_CALL XMLSignature_MSCryptImpl::getImplementationName() {
+    return "com.sun.star.xml.crypto.XMLSignature";
+}
+
+/* XServiceInfo */
+sal_Bool SAL_CALL XMLSignature_MSCryptImpl::supportsService( const OUString& serviceName) {
+return cppu::supportsService(this, serviceName);
+}
+
+/* XServiceInfo */
+Sequence< OUString > SAL_CALL XMLSignature_MSCryptImpl::getSupportedServiceNames() {
+    Sequence<OUString> seqServiceNames { "com.sun.star.xml.crypto.XMLSignature" };
+    return seqServiceNames ;
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT uno::XInterface*
+com_sun_star_xml_crypto_XMLSignature_get_implementation(uno::XComponentContext* /*pCtx*/,
+                                                        uno::Sequence<uno::Any> const& /*rSeq*/)
+{
+    return cppu::acquire(new XMLSignature_MSCryptImpl);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */