Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 2994 insertions, 0 deletions

diff --git a/desktop/source/deployment/misc/dp_dependencies.cxx b/desktop/source/deployment/misc/dp_dependencies.cxx
new file mode 100644
index 000000000..e187a6974
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_dependencies.cxx
@@ -0,0 +1,196 @@
+/* -*- 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 <config_folders.h>
+
+#include <sal/config.h>
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/xml/dom/XElement.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <osl/diagnose.h>
+#include <rtl/bootstrap.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <unotools/configmgr.hxx>
+
+#include <strings.hrc>
+#include <dp_shared.hxx>
+
+#include <dp_dependencies.hxx>
+#include <dp_descriptioninfoset.hxx>
+#include <dp_version.hxx>
+
+namespace {
+
+char const namespaceLibreOffice[] =
+    "http://libreoffice.org/extensions/description/2011";
+
+constexpr OUStringLiteral namespaceOpenOfficeOrg =
+    u"http://openoffice.org/extensions/description/2006";
+
+char const minimalVersionLibreOffice[] = "LibreOffice-minimal-version";
+char const maximalVersionLibreOffice[] = "LibreOffice-maximal-version";
+
+constexpr OUStringLiteral minimalVersionOpenOfficeOrg =
+    u"OpenOffice.org-minimal-version";
+
+char const maximalVersionOpenOfficeOrg[] =
+    "OpenOffice.org-maximal-version";
+
+OUString getLibreOfficeMajorMinorMicro() {
+    return utl::ConfigManager::getAboutBoxProductVersion();
+}
+
+OUString getReferenceOpenOfficeOrgMajorMinor() {
+#ifdef ANDROID
+    // just hardcode the version
+    OUString v("4.1");
+#else
+    OUString v(
+            "${$BRAND_BASE_DIR/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE("version")
+            ":Version:ReferenceOOoMajorMinor}");
+    rtl::Bootstrap::expandMacros(v); //TODO: check for failure
+#endif
+    return v;
+}
+
+bool satisfiesMinimalVersion(
+    OUString const & actual, OUString const & specified)
+{
+    return dp_misc::compareVersions(actual, specified) != dp_misc::LESS;
+}
+
+bool satisfiesMaximalVersion(
+    OUString const & actual, OUString const & specified)
+{
+    return dp_misc::compareVersions(actual, specified) != dp_misc::GREATER;
+}
+
+OUString produceErrorText(
+    OUString const & reason, OUString const & version)
+{
+    return reason.replaceFirst("%VERSION",
+        (version.isEmpty()
+         ?  DpResId(RID_DEPLOYMENT_DEPENDENCIES_UNKNOWN)
+         : version));
+}
+
+}
+
+namespace dp_misc::Dependencies {
+
+css::uno::Sequence< css::uno::Reference< css::xml::dom::XElement > >
+check(dp_misc::DescriptionInfoset const & infoset) {
+    css::uno::Reference< css::xml::dom::XNodeList > deps(
+        infoset.getDependencies());
+    sal_Int32 n = deps->getLength();
+    css::uno::Sequence< css::uno::Reference< css::xml::dom::XElement > >
+        unsatisfied(n);
+    auto unsatisfiedRange = asNonConstRange(unsatisfied);
+    sal_Int32 unsat = 0;
+    // check first if minimalVersionLibreOffice is specified -- in that case ignore the legacy OOo dependencies
+    bool bIgnoreOoo = false;
+    for (sal_Int32 i = 0; i < n; ++i) {
+        css::uno::Reference< css::xml::dom::XElement > e(
+            deps->item(i), css::uno::UNO_QUERY_THROW);
+        if ( e->getNamespaceURI() == namespaceLibreOffice && e->getTagName() == minimalVersionLibreOffice)
+        {
+            bIgnoreOoo = true;
+            break;
+        }
+    }
+    for (sal_Int32 i = 0; i < n; ++i) {
+        css::uno::Reference< css::xml::dom::XElement > e(
+            deps->item(i), css::uno::UNO_QUERY_THROW);
+        bool sat = false;
+        if ( e->getNamespaceURI() == namespaceOpenOfficeOrg && e->getTagName() == minimalVersionOpenOfficeOrg )
+        {
+            sat = bIgnoreOoo || satisfiesMinimalVersion(
+                getReferenceOpenOfficeOrgMajorMinor(),
+                e->getAttribute("value"));
+        } else if ( e->getNamespaceURI() == namespaceOpenOfficeOrg && e->getTagName() == maximalVersionOpenOfficeOrg )
+        {
+            sat = bIgnoreOoo || satisfiesMaximalVersion(
+                getReferenceOpenOfficeOrgMajorMinor(),
+                e->getAttribute("value"));
+        } else if (e->getNamespaceURI() == namespaceLibreOffice && e->getTagName() == minimalVersionLibreOffice )
+        {
+            sat = satisfiesMinimalVersion(
+                getLibreOfficeMajorMinorMicro(),
+                e->getAttribute("value"));
+        } else if (e->getNamespaceURI() == namespaceLibreOffice && e->getTagName() == maximalVersionLibreOffice )
+        {
+            sat = satisfiesMaximalVersion(getLibreOfficeMajorMinorMicro(), e->getAttribute("value"));
+        } else if (e->hasAttributeNS(namespaceOpenOfficeOrg,
+                       minimalVersionOpenOfficeOrg))
+        {
+            sat = satisfiesMinimalVersion(
+                getReferenceOpenOfficeOrgMajorMinor(),
+                e->getAttributeNS(namespaceOpenOfficeOrg,
+                    minimalVersionOpenOfficeOrg));
+        }
+        if (!sat) {
+            unsatisfiedRange[unsat++] = e;
+        }
+    }
+    unsatisfied.realloc(unsat);
+    return unsatisfied;
+}
+
+OUString getErrorText(
+    css::uno::Reference< css::xml::dom::XElement > const & dependency)
+{
+    OSL_ASSERT(dependency.is());
+    if ( dependency->getNamespaceURI() == namespaceOpenOfficeOrg && dependency->getTagName() == minimalVersionOpenOfficeOrg )
+    {
+        return produceErrorText(
+                DpResId(RID_DEPLOYMENT_DEPENDENCIES_OOO_MIN),
+            dependency->getAttribute("value"));
+    } else if (dependency->getNamespaceURI() == namespaceOpenOfficeOrg && dependency->getTagName() == maximalVersionOpenOfficeOrg )
+    {
+        return produceErrorText(
+                DpResId(RID_DEPLOYMENT_DEPENDENCIES_OOO_MAX),
+            dependency->getAttribute("value"));
+    } else if (dependency->getNamespaceURI() == namespaceLibreOffice && dependency->getTagName() == minimalVersionLibreOffice )
+    {
+        return produceErrorText(
+                DpResId(RID_DEPLOYMENT_DEPENDENCIES_LO_MIN),
+            dependency->getAttribute("value"));
+    } else if (dependency->getNamespaceURI() == namespaceLibreOffice && dependency->getTagName() == maximalVersionLibreOffice )
+    {
+        return produceErrorText(
+                DpResId(RID_DEPLOYMENT_DEPENDENCIES_LO_MAX),
+            dependency->getAttribute("value"));
+    } else if (dependency->hasAttributeNS(namespaceOpenOfficeOrg,
+                   minimalVersionOpenOfficeOrg))
+    {
+        return produceErrorText(
+                DpResId(RID_DEPLOYMENT_DEPENDENCIES_OOO_MIN),
+            dependency->getAttributeNS(namespaceOpenOfficeOrg,
+                minimalVersionOpenOfficeOrg));
+    } else {
+        return DpResId(RID_DEPLOYMENT_DEPENDENCIES_UNKNOWN);
+    }
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_descriptioninfoset.cxx b/desktop/source/deployment/misc/dp_descriptioninfoset.cxx
new file mode 100644
index 000000000..00b32c04f
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_descriptioninfoset.cxx
@@ -0,0 +1,809 @@
+/* -*- 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 <string_view>
+
+#include <dp_descriptioninfoset.hxx>
+
+#include <dp_resource.h>
+
+#include <comphelper/sequence.hxx>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/propertysequence.hxx>
+#include <optional>
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+#include <com/sun/star/deployment/DeploymentException.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/io/SequenceInputStream.hpp>
+#include <com/sun/star/lang/XMultiComponentFactory.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/task/XInteractionHandler.hpp>
+#include <com/sun/star/ucb/XCommandEnvironment.hpp>
+#include <com/sun/star/ucb/XProgressHandler.hpp>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/RuntimeException.hpp>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/uno/XInterface.hpp>
+#include <com/sun/star/xml/dom/DOMException.hpp>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/dom/DocumentBuilder.hpp>
+#include <com/sun/star/xml/xpath/XPathAPI.hpp>
+#include <com/sun/star/xml/xpath/XPathException.hpp>
+#include <com/sun/star/ucb/InteractiveIOException.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weak.hxx>
+#include <cppuhelper/exc_hlp.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <ucbhelper/content.hxx>
+#include <o3tl/string_view.hxx>
+
+namespace {
+
+using css::uno::Reference;
+
+class EmptyNodeList:
+    public cppu::WeakImplHelper<css::xml::dom::XNodeList>
+{
+public:
+    EmptyNodeList();
+
+    EmptyNodeList(const EmptyNodeList&) = delete;
+    const EmptyNodeList& operator=(const EmptyNodeList&) = delete;
+
+    virtual ::sal_Int32 SAL_CALL getLength() override;
+
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+    item(::sal_Int32 index) override;
+};
+
+EmptyNodeList::EmptyNodeList() {}
+
+::sal_Int32 EmptyNodeList::getLength() {
+    return 0;
+}
+
+css::uno::Reference< css::xml::dom::XNode > EmptyNodeList::item(::sal_Int32)
+{
+    throw css::uno::RuntimeException("bad EmptyNodeList com.sun.star.xml.dom.XNodeList.item call",
+        static_cast< ::cppu::OWeakObject * >(this));
+}
+
+OUString getNodeValue(
+    css::uno::Reference< css::xml::dom::XNode > const & node)
+{
+    OSL_ASSERT(node.is());
+    try {
+        return node->getNodeValue();
+    } catch (const css::xml::dom::DOMException & e) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+            "com.sun.star.xml.dom.DOMException: " + e.Message,
+            nullptr, anyEx );
+    }
+}
+
+/**The class uses the UCB to access the description.xml file in an
+   extension. The UCB must have been initialized already. It also
+   requires that the extension has already be unzipped to a particular
+   location.
+ */
+class ExtensionDescription
+{
+public:
+    /**throws an exception if the description.xml is not
+        available, cannot be read, does not contain the expected data,
+        or any other error occurred. Therefore it should only be used with
+        new extensions.
+
+        Throws css::uno::RuntimeException,
+        css::deployment::DeploymentException,
+        dp_registry::backend::bundle::NoDescriptionException.
+     */
+    ExtensionDescription(
+        const css::uno::Reference<css::uno::XComponentContext>& xContext,
+        std::u16string_view installDir,
+        const css::uno::Reference< css::ucb::XCommandEnvironment >& xCmdEnv);
+
+    const css::uno::Reference<css::xml::dom::XNode>& getRootElement() const
+    {
+        return m_xRoot;
+    }
+
+private:
+    css::uno::Reference<css::xml::dom::XNode> m_xRoot;
+};
+
+class NoDescriptionException
+{
+};
+
+class FileDoesNotExistFilter
+    : public ::cppu::WeakImplHelper< css::ucb::XCommandEnvironment,
+                                      css::task::XInteractionHandler >
+
+{
+    bool m_bExist;
+    css::uno::Reference< css::ucb::XCommandEnvironment > m_xCommandEnv;
+
+public:
+    explicit FileDoesNotExistFilter(
+        const css::uno::Reference< css::ucb::XCommandEnvironment >& xCmdEnv);
+
+    bool exist() { return m_bExist;}
+    // XCommandEnvironment
+    virtual css::uno::Reference<css::task::XInteractionHandler > SAL_CALL
+    getInteractionHandler() override;
+    virtual css::uno::Reference<css::ucb::XProgressHandler >
+    SAL_CALL getProgressHandler() override;
+
+    // XInteractionHandler
+    virtual void SAL_CALL handle(
+        css::uno::Reference<css::task::XInteractionRequest > const & xRequest ) override;
+};
+
+ExtensionDescription::ExtensionDescription(
+    const Reference<css::uno::XComponentContext>& xContext,
+    std::u16string_view installDir,
+    const Reference< css::ucb::XCommandEnvironment >& xCmdEnv)
+{
+    try {
+        //may throw css::ucb::ContentCreationException
+        //If there is no description.xml then ucb will start an interaction which
+        //brings up a dialog.We want to prevent this. Therefore we wrap the xCmdEnv
+        //and filter the respective exception out.
+        OUString sDescriptionUri(OUString::Concat(installDir) + "/description.xml");
+        Reference<css::ucb::XCommandEnvironment> xFilter = new FileDoesNotExistFilter(xCmdEnv);
+        ::ucbhelper::Content descContent(sDescriptionUri, xFilter, xContext);
+
+        //throws a css::uno::Exception if the file is not available
+        Reference<css::io::XInputStream> xIn;
+        try
+        {   //throws com.sun.star.ucb.InteractiveIOException
+            xIn = descContent.openStream();
+        }
+        catch ( const css::uno::Exception& )
+        {
+            if ( ! static_cast<FileDoesNotExistFilter*>(xFilter.get())->exist())
+                throw NoDescriptionException();
+            throw;
+        }
+        if (!xIn.is())
+        {
+            throw css::uno::Exception(
+                "Could not get XInputStream for description.xml of extension " +
+                sDescriptionUri, nullptr);
+        }
+
+        //get root node of description.xml
+        Reference<css::xml::dom::XDocumentBuilder> xDocBuilder(
+            css::xml::dom::DocumentBuilder::create(xContext) );
+
+        if (!xDocBuilder->isNamespaceAware())
+        {
+            throw css::uno::Exception(
+                "Service com.sun.star.xml.dom.DocumentBuilder is not namespace aware.", nullptr);
+        }
+
+        Reference<css::xml::dom::XDocument> xDoc = xDocBuilder->parse(xIn);
+        if (!xDoc.is())
+        {
+            throw css::uno::Exception(sDescriptionUri + " contains data which cannot be parsed. ", nullptr);
+        }
+
+        //check for proper root element and namespace
+        Reference<css::xml::dom::XElement> xRoot = xDoc->getDocumentElement();
+        if (!xRoot.is())
+        {
+            throw css::uno::Exception(
+                sDescriptionUri + " contains no root element.", nullptr);
+        }
+
+        if ( xRoot->getTagName() != "description")
+        {
+            throw css::uno::Exception(
+                sDescriptionUri + " does not contain the root element <description>.", nullptr);
+        }
+
+        m_xRoot.set(xRoot, css::uno::UNO_QUERY_THROW);
+        OUString nsDescription = xRoot->getNamespaceURI();
+
+        //check if this namespace is supported
+        if ( nsDescription != "http://openoffice.org/extensions/description/2006")
+        {
+            throw css::uno::Exception(sDescriptionUri + " contains a root element with an unsupported namespace. ", nullptr);
+        }
+    } catch (const css::uno::RuntimeException &) {
+        throw;
+    } catch (const css::deployment::DeploymentException &) {
+        throw;
+    } catch (const css::uno::Exception & e) {
+        css::uno::Any a(cppu::getCaughtException());
+        throw css::deployment::DeploymentException(
+            e.Message, Reference< css::uno::XInterface >(), a);
+    }
+}
+
+FileDoesNotExistFilter::FileDoesNotExistFilter(
+    const Reference< css::ucb::XCommandEnvironment >& xCmdEnv):
+    m_bExist(true), m_xCommandEnv(xCmdEnv)
+{}
+
+    // XCommandEnvironment
+Reference<css::task::XInteractionHandler >
+    FileDoesNotExistFilter::getInteractionHandler()
+{
+    return static_cast<css::task::XInteractionHandler*>(this);
+}
+
+Reference<css::ucb::XProgressHandler >
+    FileDoesNotExistFilter::getProgressHandler()
+{
+    return m_xCommandEnv.is()
+        ? m_xCommandEnv->getProgressHandler()
+        : Reference<css::ucb::XProgressHandler>();
+}
+
+// XInteractionHandler
+//If the interaction was caused by a non-existing file which is specified in the ctor
+//of FileDoesNotExistFilter, then we do nothing
+void  FileDoesNotExistFilter::handle(
+        Reference<css::task::XInteractionRequest > const & xRequest )
+{
+    css::uno::Any request( xRequest->getRequest() );
+
+    css::ucb::InteractiveIOException ioexc;
+    if ((request>>= ioexc)
+        && (ioexc.Code == css::ucb::IOErrorCode_NOT_EXISTING
+            || ioexc.Code == css::ucb::IOErrorCode_NOT_EXISTING_PATH))
+    {
+        m_bExist = false;
+        return;
+    }
+    Reference<css::task::XInteractionHandler> xInteraction;
+    if (m_xCommandEnv.is()) {
+        xInteraction = m_xCommandEnv->getInteractionHandler();
+    }
+    if (xInteraction.is()) {
+        xInteraction->handle(xRequest);
+    }
+}
+
+}
+
+namespace dp_misc {
+
+DescriptionInfoset getDescriptionInfoset(std::u16string_view sExtensionFolderURL)
+{
+    Reference< css::xml::dom::XNode > root;
+    Reference<css::uno::XComponentContext> context(
+        comphelper::getProcessComponentContext());
+    try {
+        root =
+            ExtensionDescription(
+                context, sExtensionFolderURL,
+                Reference< css::ucb::XCommandEnvironment >()).
+            getRootElement();
+    } catch (const NoDescriptionException &) {
+    } catch (const css::deployment::DeploymentException & e) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw css::lang::WrappedTargetRuntimeException(
+            "com.sun.star.deployment.DeploymentException: " + e.Message,
+            nullptr, anyEx );
+    }
+    return DescriptionInfoset(context, root);
+}
+
+DescriptionInfoset::DescriptionInfoset(
+    css::uno::Reference< css::uno::XComponentContext > const & context,
+    css::uno::Reference< css::xml::dom::XNode > const & element):
+    m_context(context),
+    m_element(element)
+{
+    if (m_element.is()) {
+        m_xpath = css::xml::xpath::XPathAPI::create(context);
+        m_xpath->registerNS("desc", element->getNamespaceURI());
+        m_xpath->registerNS("xlink", "http://www.w3.org/1999/xlink");
+    }
+}
+
+DescriptionInfoset::~DescriptionInfoset() {}
+
+::std::optional< OUString > DescriptionInfoset::getIdentifier() const {
+    return getOptionalValue("desc:identifier/@value");
+}
+
+OUString DescriptionInfoset::getNodeValueFromExpression(OUString const & expression) const
+{
+    css::uno::Reference< css::xml::dom::XNode > n;
+    if (m_element.is()) {
+        try {
+            n = m_xpath->selectSingleNode(m_element, expression);
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+    }
+    return n.is() ? getNodeValue(n) : OUString();
+}
+
+void DescriptionInfoset::checkDenylist() const
+{
+    if (!m_element.is())
+        return;
+
+    std::optional< OUString > id(getIdentifier());
+    if (!id)
+        return; // nothing to check
+    OUString currentversion(getVersion());
+    if (currentversion.getLength() == 0)
+        return;  // nothing to check
+
+    css::uno::Sequence<css::uno::Any> args(comphelper::InitAnyPropertySequence(
+    {
+        {"nodepath", css::uno::Any(OUString("/org.openoffice.Office.ExtensionDependencies/Extensions"))}
+    }));
+    css::uno::Reference< css::container::XNameAccess > denylist(
+        (css::configuration::theDefaultProvider::get(m_context)
+         ->createInstanceWithArguments(
+             "com.sun.star.configuration.ConfigurationAccess", args)),
+        css::uno::UNO_QUERY_THROW);
+
+    // check first if a denylist entry is available
+    if (!(denylist.is() && denylist->hasByName(*id)))        return;
+
+    css::uno::Reference< css::beans::XPropertySet > extProps(
+        denylist->getByName(*id), css::uno::UNO_QUERY_THROW);
+
+    css::uno::Any anyValue = extProps->getPropertyValue("Versions");
+
+    css::uno::Sequence< OUString > blversions;
+    anyValue >>= blversions;
+
+    // check if the current version requires further dependency checks from the denylist
+    if (!checkDenylistVersion(currentversion, blversions))        return;
+
+    anyValue = extProps->getPropertyValue("Dependencies");
+    OUString udeps;
+    anyValue >>= udeps;
+
+    if (udeps.getLength() == 0)
+        return; // nothing todo
+
+    OString xmlDependencies = OUStringToOString(udeps, RTL_TEXTENCODING_UNICODE);
+
+    css::uno::Reference< css::xml::dom::XDocumentBuilder> docbuilder(
+        m_context->getServiceManager()->createInstanceWithContext("com.sun.star.xml.dom.DocumentBuilder", m_context),
+        css::uno::UNO_QUERY_THROW);
+
+    css::uno::Sequence< sal_Int8 > byteSeq(reinterpret_cast<const sal_Int8*>(xmlDependencies.getStr()), xmlDependencies.getLength());
+
+    css::uno::Reference< css::io::XInputStream> inputstream( css::io::SequenceInputStream::createStreamFromSequence(m_context, byteSeq),
+                                                             css::uno::UNO_QUERY_THROW);
+
+    css::uno::Reference< css::xml::dom::XDocument > xDocument(docbuilder->parse(inputstream));
+    css::uno::Reference< css::xml::dom::XElement > xElement(xDocument->getDocumentElement());
+    css::uno::Reference< css::xml::dom::XNodeList > xDeps(xElement->getChildNodes());
+    sal_Int32 nLen = xDeps->getLength();
+
+    // get the parent xml document  of current description info for the import
+    css::uno::Reference< css::xml::dom::XDocument > xCurrentDescInfo(m_element->getOwnerDocument());
+
+    // get dependency node of current description info to merge the new dependencies from the denylist
+    css::uno::Reference< css::xml::dom::XNode > xCurrentDeps(
+        m_xpath->selectSingleNode(m_element, "desc:dependencies"));
+
+    // if no dependency node exists, create a new one in the current description info
+    if (!xCurrentDeps.is()) {
+        css::uno::Reference< css::xml::dom::XNode > xNewDepNode(
+            xCurrentDescInfo->createElementNS(
+                "http://openoffice.org/extensions/description/2006",
+                "dependencies"), css::uno::UNO_QUERY_THROW);
+        m_element->appendChild(xNewDepNode);
+        xCurrentDeps = m_xpath->selectSingleNode(m_element, "desc:dependencies");
+    }
+
+    for (sal_Int32 i=0; i<nLen; i++) {
+        css::uno::Reference< css::xml::dom::XNode > xNode(xDeps->item(i));
+        css::uno::Reference< css::xml::dom::XElement > xDep(xNode, css::uno::UNO_QUERY);
+        if (xDep.is()) {
+            // found valid denylist dependency, import the node first and append it to the existing dependency node
+            css::uno::Reference< css::xml::dom::XNode > importedNode = xCurrentDescInfo->importNode(xNode, true);
+            xCurrentDeps->appendChild(importedNode);
+        }
+    }
+}
+
+bool DescriptionInfoset::checkDenylistVersion(
+    std::u16string_view currentversion,
+    css::uno::Sequence< OUString > const & versions)
+{
+    sal_Int32 nLen = versions.getLength();
+    for (sal_Int32 i=0; i<nLen; i++) {
+        if (currentversion == versions[i])
+            return true;
+    }
+
+    return false;
+}
+
+OUString DescriptionInfoset::getVersion() const
+{
+    return getNodeValueFromExpression( "desc:version/@value" );
+}
+
+css::uno::Sequence< OUString > DescriptionInfoset::getSupportedPlatforms() const
+{
+    //When there is no description.xml then we assume that we support all platforms
+    if (! m_element.is())
+    {
+        return { OUString("all") };
+    }
+
+    //Check if the <platform> element was provided. If not the default is "all" platforms
+    css::uno::Reference< css::xml::dom::XNode > nodePlatform(
+        m_xpath->selectSingleNode(m_element, "desc:platform"));
+    if (!nodePlatform.is())
+    {
+        return { OUString("all") };
+    }
+
+    //There is a platform element.
+    const OUString value = getNodeValueFromExpression("desc:platform/@value");
+    //parse the string, it can contained multiple strings separated by commas
+    std::vector< OUString> vec;
+    sal_Int32 nIndex = 0;
+    do
+    {
+        const OUString aToken( o3tl::trim(o3tl::getToken(value, 0, ',', nIndex )) );
+        if (!aToken.isEmpty())
+            vec.push_back(aToken);
+
+    }
+    while (nIndex >= 0);
+
+    return comphelper::containerToSequence(vec);
+}
+
+css::uno::Reference< css::xml::dom::XNodeList >
+DescriptionInfoset::getDependencies() const {
+    if (m_element.is()) {
+        try {
+            // check the extension denylist first and expand the dependencies if applicable
+            checkDenylist();
+
+            return m_xpath->selectNodeList(m_element, "desc:dependencies/*");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+    }
+    return new EmptyNodeList;
+}
+
+css::uno::Sequence< OUString >
+DescriptionInfoset::getUpdateInformationUrls() const {
+    return getUrls("desc:update-information/desc:src/@xlink:href");
+}
+
+css::uno::Sequence< OUString >
+DescriptionInfoset::getUpdateDownloadUrls() const
+{
+    return getUrls("desc:update-download/desc:src/@xlink:href");
+}
+
+OUString DescriptionInfoset::getIconURL( bool bHighContrast ) const
+{
+    css::uno::Sequence< OUString > aStrList = getUrls( "desc:icon/desc:default/@xlink:href" );
+    css::uno::Sequence< OUString > aStrListHC = getUrls( "desc:icon/desc:high-contrast/@xlink:href" );
+
+    if ( bHighContrast && aStrListHC.hasElements() && !aStrListHC[0].isEmpty() )
+        return aStrListHC[0];
+
+    if ( aStrList.hasElements() && !aStrList[0].isEmpty() )
+        return aStrList[0];
+
+    return OUString();
+}
+
+::std::optional< OUString > DescriptionInfoset::getLocalizedUpdateWebsiteURL()
+    const
+{
+    bool bParentExists = false;
+    const OUString sURL (getLocalizedHREFAttrFromChild("/desc:description/desc:update-website", &bParentExists ));
+
+    if (!sURL.isEmpty())
+        return ::std::optional< OUString >(sURL);
+    else
+        return bParentExists ? ::std::optional< OUString >(OUString()) :
+            ::std::optional< OUString >();
+}
+
+::std::optional< OUString > DescriptionInfoset::getOptionalValue(
+    OUString const & expression) const
+{
+    css::uno::Reference< css::xml::dom::XNode > n;
+    if (m_element.is()) {
+        try {
+            n = m_xpath->selectSingleNode(m_element, expression);
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+    }
+    return n.is()
+        ? ::std::optional< OUString >(getNodeValue(n))
+        : ::std::optional< OUString >();
+}
+
+css::uno::Sequence< OUString > DescriptionInfoset::getUrls(
+    OUString const & expression) const
+{
+    css::uno::Reference< css::xml::dom::XNodeList > ns;
+    if (m_element.is()) {
+        try {
+            ns = m_xpath->selectNodeList(m_element, expression);
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+    }
+    css::uno::Sequence< OUString > urls(ns.is() ? ns->getLength() : 0);
+    auto urlsRange = asNonConstRange(urls);
+    for (::sal_Int32 i = 0; i < urls.getLength(); ++i) {
+        urlsRange[i] = getNodeValue(ns->item(i));
+    }
+    return urls;
+}
+
+std::pair< OUString, OUString > DescriptionInfoset::getLocalizedPublisherNameAndURL() const
+{
+    css::uno::Reference< css::xml::dom::XNode > node =
+        getLocalizedChild("desc:publisher");
+
+    OUString sPublisherName;
+    OUString sURL;
+    if (node.is())
+    {
+        css::uno::Reference< css::xml::dom::XNode > xPathName;
+        try {
+            xPathName = m_xpath->selectSingleNode(node, "text()");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        OSL_ASSERT(xPathName.is());
+        if (xPathName.is())
+            sPublisherName = xPathName->getNodeValue();
+
+        css::uno::Reference< css::xml::dom::XNode > xURL;
+        try {
+            xURL = m_xpath->selectSingleNode(node, "@xlink:href");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        OSL_ASSERT(xURL.is());
+        if (xURL.is())
+           sURL = xURL->getNodeValue();
+    }
+    return std::make_pair(sPublisherName, sURL);
+}
+
+OUString DescriptionInfoset::getLocalizedReleaseNotesURL() const
+{
+    return getLocalizedHREFAttrFromChild("/desc:description/desc:release-notes", nullptr);
+}
+
+OUString DescriptionInfoset::getLocalizedDisplayName() const
+{
+    css::uno::Reference< css::xml::dom::XNode > node =
+        getLocalizedChild("desc:display-name");
+    if (node.is())
+    {
+        css::uno::Reference< css::xml::dom::XNode > xtext;
+        try {
+            xtext = m_xpath->selectSingleNode(node, "text()");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        if (xtext.is())
+            return xtext->getNodeValue();
+    }
+    return OUString();
+}
+
+OUString DescriptionInfoset::getLocalizedLicenseURL() const
+{
+    return getLocalizedHREFAttrFromChild("/desc:description/desc:registration/desc:simple-license", nullptr);
+
+}
+
+::std::optional<SimpleLicenseAttributes>
+DescriptionInfoset::getSimpleLicenseAttributes() const
+{
+    //Check if the node exist
+    css::uno::Reference< css::xml::dom::XNode > n;
+    if (m_element.is()) {
+        try {
+            n = m_xpath->selectSingleNode(m_element, "/desc:description/desc:registration/desc:simple-license/@accept-by");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        if (n.is())
+        {
+            SimpleLicenseAttributes attributes;
+            attributes.acceptBy =
+                getNodeValueFromExpression("/desc:description/desc:registration/desc:simple-license/@accept-by");
+
+            ::std::optional< OUString > suppressOnUpdate = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-on-update");
+            if (suppressOnUpdate)
+                attributes.suppressOnUpdate = o3tl::equalsIgnoreAsciiCase(o3tl::trim(*suppressOnUpdate), u"true");
+            else
+                attributes.suppressOnUpdate = false;
+
+            ::std::optional< OUString > suppressIfRequired = getOptionalValue("/desc:description/desc:registration/desc:simple-license/@suppress-if-required");
+            if (suppressIfRequired)
+                attributes.suppressIfRequired = o3tl::equalsIgnoreAsciiCase(o3tl::trim(*suppressIfRequired), u"true");
+            else
+                attributes.suppressIfRequired = false;
+
+            return ::std::optional<SimpleLicenseAttributes>(attributes);
+        }
+    }
+    return ::std::optional<SimpleLicenseAttributes>();
+}
+
+OUString DescriptionInfoset::getLocalizedDescriptionURL() const
+{
+    return getLocalizedHREFAttrFromChild("/desc:description/desc:extension-description", nullptr);
+}
+
+css::uno::Reference< css::xml::dom::XNode >
+DescriptionInfoset::getLocalizedChild( const OUString & sParent) const
+{
+    if ( ! m_element.is() || sParent.isEmpty())
+        return css::uno::Reference< css::xml::dom::XNode > ();
+
+    css::uno::Reference< css::xml::dom::XNode > xParent;
+    try {
+        xParent = m_xpath->selectSingleNode(m_element, sParent);
+    } catch (const css::xml::xpath::XPathException &) {
+        // ignore
+    }
+    css::uno::Reference<css::xml::dom::XNode> nodeMatch;
+    if (xParent.is())
+    {
+        nodeMatch = matchLanguageTag(xParent, getOfficeLanguageTag().getBcp47());
+
+        //office: en-DE, en, en-DE-altmark
+        if (! nodeMatch.is())
+        {
+            // Already tried full tag, continue with first fallback.
+            const std::vector< OUString > aFallbacks( getOfficeLanguageTag().getFallbackStrings( false));
+            for (auto const& fallback : aFallbacks)
+            {
+                nodeMatch = matchLanguageTag(xParent, fallback);
+                if (nodeMatch.is())
+                    break;
+            }
+            if (! nodeMatch.is())
+                nodeMatch = getChildWithDefaultLocale(xParent);
+        }
+    }
+
+    return nodeMatch;
+}
+
+css::uno::Reference<css::xml::dom::XNode>
+DescriptionInfoset::matchLanguageTag(
+    css::uno::Reference< css::xml::dom::XNode > const & xParent, std::u16string_view rTag) const
+{
+    OSL_ASSERT(xParent.is());
+    css::uno::Reference<css::xml::dom::XNode> nodeMatch;
+
+    //first try exact match for lang
+    const OUString exp1(OUString::Concat("*[@lang=\"") + rTag + "\"]");
+    try {
+        nodeMatch = m_xpath->selectSingleNode(xParent, exp1);
+    } catch (const css::xml::xpath::XPathException &) {
+        // ignore
+    }
+
+    //try to match in strings that also have a country and/or variant, for
+    //example en  matches in en-US-montana, en-US, en-montana
+    if (!nodeMatch.is())
+    {
+        const OUString exp2(
+            OUString::Concat("*[starts-with(@lang,\"") + rTag + "-\")]");
+        try {
+            nodeMatch = m_xpath->selectSingleNode(xParent, exp2);
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+    }
+    return nodeMatch;
+}
+
+css::uno::Reference<css::xml::dom::XNode>
+DescriptionInfoset::getChildWithDefaultLocale(css::uno::Reference< css::xml::dom::XNode >
+                                    const & xParent) const
+{
+    OSL_ASSERT(xParent.is());
+    if ( xParent->getNodeName() == "simple-license" )
+    {
+        css::uno::Reference<css::xml::dom::XNode> nodeDefault;
+        try {
+            nodeDefault = m_xpath->selectSingleNode(xParent, "@default-license-id");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        if (nodeDefault.is())
+        {
+            //The old way
+            const OUString exp1("desc:license-text[@license-id = \""
+                + nodeDefault->getNodeValue()
+                + "\"]");
+            try {
+                return m_xpath->selectSingleNode(xParent, exp1);
+            } catch (const css::xml::xpath::XPathException &) {
+                // ignore
+            }
+        }
+    }
+
+    try {
+        return m_xpath->selectSingleNode(xParent, "*[1]");
+    } catch (const css::xml::xpath::XPathException &) {
+        // ignore
+        return nullptr;
+    }
+}
+
+OUString DescriptionInfoset::getLocalizedHREFAttrFromChild(
+    OUString const & sXPathParent, bool * out_bParentExists)
+    const
+{
+    css::uno::Reference< css::xml::dom::XNode > node =
+        getLocalizedChild(sXPathParent);
+
+    OUString sURL;
+    if (node.is())
+    {
+        if (out_bParentExists)
+            *out_bParentExists = true;
+        css::uno::Reference< css::xml::dom::XNode > xURL;
+        try {
+            xURL = m_xpath->selectSingleNode(node, "@xlink:href");
+        } catch (const css::xml::xpath::XPathException &) {
+            // ignore
+        }
+        OSL_ASSERT(xURL.is());
+        if (xURL.is())
+            sURL = xURL->getNodeValue();
+    }
+    else
+    {
+        if (out_bParentExists)
+            *out_bParentExists = false;
+    }
+    return sURL;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_identifier.cxx b/desktop/source/deployment/misc/dp_identifier.cxx
new file mode 100644
index 000000000..8669710c7
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_identifier.cxx
@@ -0,0 +1,56 @@
+/* -*- 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 <optional>
+#include <com/sun/star/beans/Optional.hpp>
+#include <com/sun/star/deployment/XPackage.hpp>
+#include <com/sun/star/uno/Reference.hxx>
+#include <osl/diagnose.h>
+#include <rtl/ustring.hxx>
+
+#include <dp_identifier.hxx>
+
+namespace dp_misc {
+
+OUString generateIdentifier(
+    ::std::optional< OUString > const & optional,
+    std::u16string_view fileName)
+{
+    return optional ? *optional : generateLegacyIdentifier(fileName);
+}
+
+OUString getIdentifier(
+    css::uno::Reference< css::deployment::XPackage > const & package)
+{
+    OSL_ASSERT(package.is());
+    css::beans::Optional< OUString > id(package->getIdentifier());
+    return id.IsPresent
+        ? id.Value : generateLegacyIdentifier(package->getName());
+}
+
+OUString generateLegacyIdentifier(std::u16string_view fileName) {
+    return OUString::Concat("org.openoffice.legacy.") + fileName;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_interact.cxx b/desktop/source/deployment/misc/dp_interact.cxx
new file mode 100644
index 000000000..ae928a28e
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_interact.cxx
@@ -0,0 +1,137 @@
+/* -*- 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 <dp_interact.h>
+
+#include <comphelper/interaction.hxx>
+
+#include <com/sun/star/task/XInteractionAbort.hpp>
+#include <osl/diagnose.h>
+
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::ucb;
+
+namespace dp_misc {
+namespace {
+
+
+class InteractionContinuationImpl : public ::cppu::OWeakObject,
+                                    public task::XInteractionContinuation
+{
+    const Type m_type;
+    bool * m_pselect;
+
+public:
+    InteractionContinuationImpl( Type const & type, bool * pselect )
+        : m_type( type ),
+          m_pselect( pselect )
+        { OSL_ASSERT(
+            cppu::UnoType<task::XInteractionContinuation>::get().isAssignableFrom(m_type) ); }
+
+    // XInterface
+    virtual void SAL_CALL acquire() noexcept override;
+    virtual void SAL_CALL release() noexcept override;
+    virtual Any SAL_CALL queryInterface( Type const & type ) override;
+
+    // XInteractionContinuation
+    virtual void SAL_CALL select() override;
+};
+
+// XInterface
+
+void InteractionContinuationImpl::acquire() noexcept
+{
+    OWeakObject::acquire();
+}
+
+
+void InteractionContinuationImpl::release() noexcept
+{
+    OWeakObject::release();
+}
+
+
+Any InteractionContinuationImpl::queryInterface( Type const & type )
+{
+    if (type.isAssignableFrom( m_type )) {
+        Reference<task::XInteractionContinuation> xThis(this);
+        return Any( &xThis, type );
+    }
+    else
+        return OWeakObject::queryInterface(type);
+}
+
+// XInteractionContinuation
+
+void InteractionContinuationImpl::select()
+{
+    *m_pselect = true;
+}
+
+} // anon namespace
+
+
+bool interactContinuation( Any const & request,
+                           Type const & continuation,
+                           Reference<XCommandEnvironment> const & xCmdEnv,
+                           bool * pcont, bool * pabort )
+{
+    OSL_ASSERT(
+        cppu::UnoType<task::XInteractionContinuation>::get().isAssignableFrom(
+            continuation ) );
+    if (!xCmdEnv)
+        return false;
+
+    Reference<task::XInteractionHandler> xInteractionHandler(
+        xCmdEnv->getInteractionHandler() );
+    if (!xInteractionHandler)
+        return false;
+
+    bool cont = false;
+    bool abort = false;
+    std::vector< Reference<task::XInteractionContinuation> > conts {
+        new InteractionContinuationImpl(continuation, &cont ),
+        new InteractionContinuationImpl( cppu::UnoType<task::XInteractionAbort>::get(), &abort ) };
+    xInteractionHandler->handle(
+        new ::comphelper::OInteractionRequest( request, std::move(conts) ) );
+    if (cont || abort) {
+        if (pcont != nullptr)
+            *pcont = cont;
+        if (pabort != nullptr)
+            *pabort = abort;
+        return true;
+    }
+    return false;
+}
+
+// XAbortChannel
+
+void AbortChannel::sendAbort()
+{
+    m_aborted = true;
+    if (m_xNext.is())
+        m_xNext->sendAbort();
+}
+
+} // dp_misc
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_misc.cxx b/desktop/source/deployment/misc/dp_misc.cxx
new file mode 100644
index 000000000..f4437711d
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_misc.cxx
@@ -0,0 +1,561 @@
+/* -*- 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 <config_folders.h>
+#include <config_features.h>
+#include <chrono>
+
+#include <dp_misc.h>
+#include <dp_interact.h>
+#include <dp_shared.hxx>
+#include <rtl/uri.hxx>
+#include <rtl/digest.h>
+#include <rtl/random.h>
+#include <rtl/bootstrap.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+#include <unotools/bootstrap.hxx>
+#include <osl/file.hxx>
+#include <osl/pipe.hxx>
+#include <osl/security.hxx>
+#include <osl/thread.hxx>
+#include <com/sun/star/ucb/CommandAbortedException.hpp>
+#include <com/sun/star/task/XInteractionHandler.hpp>
+#include <com/sun/star/bridge/BridgeFactory.hpp>
+#include <com/sun/star/bridge/UnoUrlResolver.hpp>
+#include <com/sun/star/bridge/XUnoUrlResolver.hpp>
+#include <com/sun/star/deployment/ExtensionManager.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/task/OfficeRestartManager.hpp>
+#include <memory>
+#include <string_view>
+#include <comphelper/lok.hxx>
+#include <comphelper/processfactory.hxx>
+#include <salhelper/linkhelper.hxx>
+
+#ifdef _WIN32
+#include <prewin.h>
+#include <postwin.h>
+#endif
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace dp_misc {
+namespace {
+
+struct UnoRc : public rtl::StaticWithInit<
+    std::shared_ptr<rtl::Bootstrap>, UnoRc> {
+    std::shared_ptr<rtl::Bootstrap> operator () () {
+        OUString unorc( "$BRAND_BASE_DIR/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE("louno") );
+        ::rtl::Bootstrap::expandMacros( unorc );
+        auto ret = std::make_shared<::rtl::Bootstrap>( unorc );
+        OSL_ASSERT( ret->getHandle() != nullptr );
+        return ret;
+    }
+};
+
+OUString generateOfficePipeId()
+{
+    OUString userPath;
+    ::utl::Bootstrap::PathStatus aLocateResult =
+    ::utl::Bootstrap::locateUserInstallation( userPath );
+    if (aLocateResult != ::utl::Bootstrap::PATH_EXISTS &&
+        aLocateResult != ::utl::Bootstrap::PATH_VALID)
+    {
+        throw Exception("Extension Manager: Could not obtain path for UserInstallation.", nullptr);
+    }
+
+    rtlDigest digest = rtl_digest_create( rtl_Digest_AlgorithmMD5 );
+    if (!digest) {
+        throw RuntimeException("cannot get digest rtl_Digest_AlgorithmMD5!", nullptr );
+    }
+
+    sal_uInt8 const * data =
+        reinterpret_cast<sal_uInt8 const *>(userPath.getStr());
+    std::size_t size = userPath.getLength() * sizeof (sal_Unicode);
+    sal_uInt32 md5_key_len = rtl_digest_queryLength( digest );
+    std::unique_ptr<sal_uInt8[]> md5_buf( new sal_uInt8 [ md5_key_len ] );
+
+    rtl_digest_init( digest, data, static_cast<sal_uInt32>(size) );
+    rtl_digest_update( digest, data, static_cast<sal_uInt32>(size) );
+    rtl_digest_get( digest, md5_buf.get(), md5_key_len );
+    rtl_digest_destroy( digest );
+
+    // create hex-value string from the MD5 value to keep
+    // the string size minimal
+    OUStringBuffer buf;
+    buf.append( "SingleOfficeIPC_" );
+    for ( sal_uInt32 i = 0; i < md5_key_len; ++i ) {
+        buf.append( static_cast<sal_Int32>(md5_buf[ i ]), 0x10 );
+    }
+    return buf.makeStringAndClear();
+}
+
+bool existsOfficePipe()
+{
+    static OUString OfficePipeId = generateOfficePipeId();
+
+    OUString const & pipeId = OfficePipeId;
+    if (pipeId.isEmpty())
+        return false;
+    ::osl::Security sec;
+    ::osl::Pipe pipe( pipeId, osl_Pipe_OPEN, sec );
+    return pipe.is();
+}
+
+//get modification time
+bool getModifyTimeTargetFile(const OUString &rFileURL, TimeValue &rTime)
+{
+    salhelper::LinkResolver aResolver(osl_FileStatus_Mask_ModifyTime);
+
+    if (aResolver.fetchFileStatus(rFileURL) != osl::FileBase::E_None)
+        return false;
+
+    rTime = aResolver.m_aStatus.getModifyTime();
+
+    return true;
+}
+
+//Returns true if the Folder was more recently modified then
+//the lastsynchronized file. That is the repository needs to
+//be synchronized.
+bool compareExtensionFolderWithLastSynchronizedFile(
+    OUString const & folderURL, OUString const & fileURL)
+{
+    bool bNeedsSync = false;
+    ::osl::DirectoryItem itemExtFolder;
+    ::osl::File::RC err1 =
+          ::osl::DirectoryItem::get(folderURL, itemExtFolder);
+    //If it does not exist, then there is nothing to be done
+    if (err1 == ::osl::File::E_NOENT)
+    {
+        return false;
+    }
+    else if (err1 != ::osl::File::E_None)
+    {
+        OSL_FAIL("Cannot access extension folder");
+        return true; //sync just in case
+    }
+
+    //If last synchronized does not exist, then OOo is started for the first time
+    ::osl::DirectoryItem itemFile;
+    ::osl::File::RC err2 = ::osl::DirectoryItem::get(fileURL, itemFile);
+    if (err2 == ::osl::File::E_NOENT)
+    {
+        return true;
+
+    }
+    else if (err2 != ::osl::File::E_None)
+    {
+        OSL_FAIL("Cannot access file lastsynchronized");
+        return true; //sync just in case
+    }
+
+    //compare the modification time of the extension folder and the last
+    //modified file
+    TimeValue timeFolder;
+    if (getModifyTimeTargetFile(folderURL, timeFolder))
+    {
+        TimeValue timeFile;
+        if (getModifyTimeTargetFile(fileURL, timeFile))
+        {
+            if (timeFile.Seconds < timeFolder.Seconds)
+                bNeedsSync = true;
+        }
+        else
+        {
+            OSL_ASSERT(false);
+            bNeedsSync = true;
+        }
+    }
+    else
+    {
+        OSL_ASSERT(false);
+        bNeedsSync = true;
+    }
+
+    return bNeedsSync;
+}
+
+bool needToSyncRepository(std::u16string_view name)
+{
+    OUString folder;
+    OUString file;
+    if ( name == u"bundled" )
+    {
+        folder = "$BUNDLED_EXTENSIONS";
+        file = "$BUNDLED_EXTENSIONS_USER/lastsynchronized";
+    }
+    else if ( name == u"shared" )
+    {
+        folder = "$UNO_SHARED_PACKAGES_CACHE/uno_packages";
+        file = "$SHARED_EXTENSIONS_USER/lastsynchronized";
+    }
+    else
+    {
+        OSL_ASSERT(false);
+        return true;
+    }
+    ::rtl::Bootstrap::expandMacros(folder);
+    ::rtl::Bootstrap::expandMacros(file);
+    return compareExtensionFolderWithLastSynchronizedFile(
+        folder, file);
+}
+
+
+} // anon namespace
+
+
+namespace {
+OUString encodeForRcFile( OUString const & str )
+{
+    // escape $\{} (=> rtl bootstrap files)
+    OUStringBuffer buf(64);
+    sal_Int32 pos = 0;
+    const sal_Int32 len = str.getLength();
+    for ( ; pos < len; ++pos ) {
+        sal_Unicode c = str[ pos ];
+        switch (c) {
+        case '$':
+        case '\\':
+        case '{':
+        case '}':
+            buf.append( '\\' );
+            break;
+        }
+        buf.append( c );
+    }
+    return buf.makeStringAndClear();
+}
+}
+
+
+OUString makeURL( OUString const & baseURL, OUString const & relPath_ )
+{
+    OUStringBuffer buf(128);
+    if (baseURL.getLength() > 1 && baseURL[ baseURL.getLength() - 1 ] == '/')
+        buf.append( baseURL.subView(0, baseURL.getLength() - 1) );
+    else
+        buf.append( baseURL );
+    OUString relPath(relPath_);
+    if( relPath.startsWith("/") )
+        relPath = relPath.copy( 1 );
+    if (!relPath.isEmpty())
+    {
+        buf.append( '/' );
+        if (baseURL.match( "vnd.sun.star.expand:" )) {
+            // encode for macro expansion: relPath is supposed to have no
+            // macros, so encode $, {} \ (bootstrap mimic)
+            relPath = encodeForRcFile(relPath);
+
+            // encode once more for vnd.sun.star.expand schema:
+            // vnd.sun.star.expand:$UNO_...
+            // will expand to file-url
+            relPath = ::rtl::Uri::encode( relPath, rtl_UriCharClassUric,
+                                          rtl_UriEncodeIgnoreEscapes,
+                                          RTL_TEXTENCODING_UTF8 );
+        }
+        buf.append( relPath );
+    }
+    return buf.makeStringAndClear();
+}
+
+OUString makeURLAppendSysPathSegment( OUString const & baseURL, OUString const & segment )
+{
+    OSL_ASSERT(segment.indexOf(u'/') == -1);
+
+    ::rtl::Uri::encode(
+        segment, rtl_UriCharClassPchar, rtl_UriEncodeIgnoreEscapes,
+        RTL_TEXTENCODING_UTF8);
+    return makeURL(baseURL, segment);
+}
+
+
+OUString expandUnoRcTerm( OUString const & term_ )
+{
+    OUString term(term_);
+    UnoRc::get()->expandMacrosFrom( term );
+    return term;
+}
+
+OUString makeRcTerm( OUString const & url )
+{
+    OSL_ASSERT( url.match( "vnd.sun.star.expand:" ));
+    if (url.match( "vnd.sun.star.expand:" )) {
+        // cut protocol:
+        OUString rcterm( url.copy( sizeof ("vnd.sun.star.expand:") - 1 ) );
+        // decode uric class chars:
+        rcterm = ::rtl::Uri::decode(
+            rcterm, rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8 );
+        return rcterm;
+    }
+    else
+        return url;
+}
+
+
+OUString expandUnoRcUrl( OUString const & url )
+{
+    if (url.match( "vnd.sun.star.expand:" )) {
+        // cut protocol:
+        OUString rcurl( url.copy( sizeof ("vnd.sun.star.expand:") - 1 ) );
+        // decode uric class chars:
+        rcurl = ::rtl::Uri::decode(
+            rcurl, rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8 );
+        // expand macro string:
+        UnoRc::get()->expandMacrosFrom( rcurl );
+        return rcurl;
+    }
+    else {
+        return url;
+    }
+}
+
+
+bool office_is_running()
+{
+    //We need to check if we run within the office process. Then we must not use the pipe, because
+    //this could cause a deadlock. This is actually a workaround for i82778
+    OUString sFile;
+    oslProcessError err = osl_getExecutableFile(& sFile.pData);
+    bool ret = false;
+    if (osl_Process_E_None == err)
+    {
+        sFile = sFile.copy(sFile.lastIndexOf('/') + 1);
+        if (
+#if defined _WIN32
+            //osl_getExecutableFile should deliver "soffice.bin" on windows
+            //even if swriter.exe, scalc.exe etc. was started. This is a bug
+            //in osl_getExecutableFile
+            sFile == "soffice.bin" || sFile == "soffice.exe" || sFile == "soffice.com"
+            || sFile == "soffice" || sFile == "swriter.exe" || sFile == "swriter"
+            || sFile == "scalc.exe" || sFile == "scalc" || sFile == "simpress.exe"
+            || sFile == "simpress" || sFile == "sdraw.exe" || sFile == "sdraw"
+            || sFile == "sbase.exe" || sFile == "sbase"
+#elif defined MACOSX
+            sFile == "soffice"
+#elif defined UNIX
+            sFile == "soffice.bin"
+#else
+#error "Unsupported platform"
+#endif
+
+            )
+            ret = true;
+        else
+            ret = existsOfficePipe();
+    }
+    else
+    {
+        OSL_FAIL("NOT osl_Process_E_None ");
+        //if osl_getExecutable file then we take the risk of creating a pipe
+        ret =  existsOfficePipe();
+    }
+    return ret;
+}
+
+
+oslProcess raiseProcess(
+    OUString const & appURL, Sequence<OUString> const & args )
+{
+    ::osl::Security sec;
+    oslProcess hProcess = nullptr;
+    oslProcessError rc = osl_executeProcess(
+        appURL.pData,
+        reinterpret_cast<rtl_uString **>(
+            const_cast<OUString *>(args.getConstArray()) ),
+        args.getLength(),
+        osl_Process_DETACHED,
+        sec.getHandle(),
+        nullptr, // => current working dir
+        nullptr, 0, // => no env vars
+        &hProcess );
+
+    switch (rc) {
+    case osl_Process_E_None:
+        break;
+    case osl_Process_E_NotFound:
+        throw RuntimeException( "image not found!", nullptr );
+    case osl_Process_E_TimedOut:
+        throw RuntimeException( "timeout occurred!", nullptr );
+    case osl_Process_E_NoPermission:
+        throw RuntimeException( "permission denied!", nullptr );
+    case osl_Process_E_Unknown:
+        throw RuntimeException( "unknown error!", nullptr );
+    case osl_Process_E_InvalidError:
+    default:
+        throw RuntimeException( "unmapped error!", nullptr );
+    }
+
+    return hProcess;
+}
+
+
+OUString generateRandomPipeId()
+{
+    // compute some good pipe id:
+    static rtlRandomPool s_hPool = rtl_random_createPool();
+    if (s_hPool == nullptr)
+        throw RuntimeException( "cannot create random pool!?", nullptr );
+    sal_uInt8 bytes[ 32 ];
+    if (rtl_random_getBytes(
+            s_hPool, bytes, SAL_N_ELEMENTS(bytes) ) != rtl_Random_E_None) {
+        throw RuntimeException( "random pool error!?", nullptr );
+    }
+    OUStringBuffer buf;
+    for (unsigned char byte : bytes) {
+        buf.append( static_cast<sal_Int32>(byte), 0x10 );
+    }
+    return buf.makeStringAndClear();
+}
+
+
+Reference<XInterface> resolveUnoURL(
+    OUString const & connectString,
+    Reference<XComponentContext> const & xLocalContext,
+    AbortChannel const * abortChannel )
+{
+    Reference<bridge::XUnoUrlResolver> xUnoUrlResolver(
+        bridge::UnoUrlResolver::create( xLocalContext ) );
+
+    for (int i = 0; i <= 40; ++i) // 20 seconds
+    {
+        if (abortChannel != nullptr && abortChannel->isAborted()) {
+            throw ucb::CommandAbortedException( "abort!" );
+        }
+        try {
+            return xUnoUrlResolver->resolve( connectString );
+        }
+        catch (const connection::NoConnectException &) {
+            if (i < 40)
+            {
+                ::osl::Thread::wait( std::chrono::milliseconds(500) );
+            }
+            else throw;
+        }
+    }
+    return nullptr; // warning C4715
+}
+
+static void writeConsoleWithStream(std::u16string_view sText, FILE * stream)
+{
+    OString s = OUStringToOString(sText, osl_getThreadTextEncoding());
+    fprintf(stream, "%s", s.getStr());
+    fflush(stream);
+}
+
+void writeConsole(std::u16string_view sText)
+{
+    writeConsoleWithStream(sText, stdout);
+}
+
+void writeConsoleError(std::u16string_view sText)
+{
+    writeConsoleWithStream(sText, stderr);
+}
+
+OUString readConsole()
+{
+    char buf[1024];
+    memset(buf, 0, 1024);
+    // read one char less so that the last char in buf is always zero
+    if (fgets(buf, 1024, stdin) != nullptr)
+    {
+        OUString value = OStringToOUString(std::string_view(buf), osl_getThreadTextEncoding());
+        return value.trim();
+    }
+    throw css::uno::RuntimeException("reading from stdin failed");
+}
+
+void TRACE(OUString const & sText)
+{
+    SAL_INFO("desktop.deployment", sText);
+}
+
+void syncRepositories(
+    bool force, Reference<ucb::XCommandEnvironment> const & xCmdEnv)
+{
+    OUString sDisable;
+    ::rtl::Bootstrap::get( "DISABLE_EXTENSION_SYNCHRONIZATION", sDisable, OUString() );
+    if (!sDisable.isEmpty())
+        return;
+
+    Reference<deployment::XExtensionManager> xExtensionManager;
+    //synchronize shared before bundled otherwise there are
+    //more revoke and registration calls.
+    bool bModified = false;
+    if (force || needToSyncRepository(u"shared") || needToSyncRepository(u"bundled"))
+    {
+        xExtensionManager =
+            deployment::ExtensionManager::get(
+                comphelper::getProcessComponentContext());
+
+        if (xExtensionManager.is())
+        {
+            bModified = xExtensionManager->synchronize(
+                Reference<task::XAbortChannel>(), xCmdEnv);
+        }
+    }
+#if !HAVE_FEATURE_MACOSX_SANDBOX
+    if (bModified && !comphelper::LibreOfficeKit::isActive())
+    {
+        Reference<task::XRestartManager> restarter(task::OfficeRestartManager::get(comphelper::getProcessComponentContext()));
+        if (restarter.is())
+        {
+            restarter->requestRestart(xCmdEnv.is() ? xCmdEnv->getInteractionHandler() :
+                                      Reference<task::XInteractionHandler>());
+        }
+    }
+#endif
+}
+
+void disposeBridges(Reference<css::uno::XComponentContext> const & ctx)
+{
+    if (!ctx.is())
+        return;
+
+    Reference<css::bridge::XBridgeFactory2> bridgeFac( css::bridge::BridgeFactory::create(ctx) );
+
+    const Sequence< Reference<css::bridge::XBridge> >seqBridges = bridgeFac->getExistingBridges();
+    for (const Reference<css::bridge::XBridge>& bridge : seqBridges)
+    {
+        Reference<css::lang::XComponent> comp(bridge, UNO_QUERY);
+        if (comp.is())
+        {
+            try {
+                comp->dispose();
+            }
+            catch ( const css::lang::DisposedException& )
+            {
+            }
+        }
+    }
+}
+
+}
+
+OUString DpResId(TranslateId aId)
+{
+    static std::locale SINGLETON = Translate::Create("dkt");
+    return Translate::get(aId, SINGLETON);
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_platform.cxx b/desktop/source/deployment/misc/dp_platform.cxx
new file mode 100644
index 000000000..879e617b7
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_platform.cxx
@@ -0,0 +1,207 @@
+/* -*- 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 <dp_platform.hxx>
+#include <rtl/ustring.hxx>
+#include <rtl/instance.hxx>
+#include <rtl/bootstrap.hxx>
+#include <osl/diagnose.h>
+#include <o3tl/string_view.hxx>
+
+constexpr OUStringLiteral PLATFORM_ALL = u"all";
+
+
+namespace dp_misc
+{
+namespace
+{
+    struct StrOperatingSystem :
+        public rtl::StaticWithInit<OUString, StrOperatingSystem> {
+             OUString operator () () {
+                OUString os( "$_OS" );
+                ::rtl::Bootstrap::expandMacros( os );
+                return os;
+            }
+    };
+
+    struct StrCPU :
+        public rtl::StaticWithInit<OUString, StrCPU> {
+            OUString operator () () {
+                OUString arch( "$_ARCH" );
+                ::rtl::Bootstrap::expandMacros( arch );
+                return arch;
+            }
+    };
+
+
+    struct StrPlatform : public rtl::StaticWithInit<
+        OUString, StrPlatform> {
+            OUString operator () () {
+                return StrOperatingSystem::get() + "_" + StrCPU::get();
+            }
+    };
+
+    bool checkOSandCPU(std::u16string_view os, std::u16string_view cpu)
+    {
+        return (os == StrOperatingSystem::get())
+            && (cpu == StrCPU::get());
+    }
+
+    bool isPlatformSupported( std::u16string_view token )
+    {
+        bool ret = false;
+        if (token == PLATFORM_ALL)
+            ret = true;
+        else if (token == u"windows_x86")
+            ret = checkOSandCPU(u"Windows", u"x86");
+        else if (token == u"windows_x86_64")
+            ret = checkOSandCPU(u"Windows", u"X86_64");
+        else if (token == u"windows_aarch64")
+            ret = checkOSandCPU(u"Windows", u"AARCH64");
+        else if (token == u"solaris_sparc")
+            ret = checkOSandCPU(u"Solaris", u"SPARC");
+        else if (token == u"solaris_sparc64")
+            ret = checkOSandCPU(u"Solaris", u"SPARC64");
+        else if (token == u"solaris_x86")
+            ret = checkOSandCPU(u"Solaris", u"x86");
+        else if (token == u"aix_powerpc")
+            ret = checkOSandCPU(u"AIX", u"PowerPC");
+        else if (token == u"macosx_aarch64")
+            ret = checkOSandCPU(u"MacOSX", u"AARCH64");
+        else if (token == u"macosx_x86_64")
+            ret = checkOSandCPU(u"MacOSX", u"X86_64");
+        else if (token == u"linux_x86")
+            ret = checkOSandCPU(u"Linux", u"x86");
+        else if (token == u"linux_x86_64")
+            ret = checkOSandCPU(u"Linux", u"X86_64");
+        else if (token == u"linux_sparc")
+            ret = checkOSandCPU(u"Linux", u"SPARC");
+        else if (token == u"linux_sparc64")
+            ret = checkOSandCPU(u"Linux", u"SPARC64");
+        else if (token == u"linux_powerpc")
+            ret = checkOSandCPU(u"Linux", u"PowerPC");
+        else if (token == u"linux_powerpc64")
+            ret = checkOSandCPU(u"Linux", u"PowerPC_64");
+        else if (token == u"linux_powerpc64_le")
+            ret = checkOSandCPU(u"Linux", u"PowerPC_64_LE");
+        else if (token == u"linux_arm_eabi")
+            ret = checkOSandCPU(u"Linux", u"ARM_EABI");
+        else if (token == u"linux_arm_oabi")
+            ret = checkOSandCPU(u"Linux", u"ARM_OABI");
+        else if (token == u"linux_mips_el")
+            ret = checkOSandCPU(u"Linux", u"MIPS_EL");
+        else if (token == u"linux_mips64_el")
+            ret = checkOSandCPU(u"Linux", u"MIPS64_EL");
+        else if (token == u"linux_mips_eb")
+            ret = checkOSandCPU(u"Linux", u"MIPS_EB");
+        else if (token == u"linux_mips64_eb")
+            ret = checkOSandCPU(u"Linux", u"MIPS64_EB");
+        else if (token == u"linux_ia64")
+            ret = checkOSandCPU(u"Linux", u"IA64");
+        else if (token == u"linux_m68k")
+            ret = checkOSandCPU(u"Linux", u"M68K");
+        else if (token == u"linux_s390")
+            ret = checkOSandCPU(u"Linux", u"S390");
+        else if (token == u"linux_s390x")
+            ret = checkOSandCPU(u"Linux", u"S390x");
+        else if (token == u"linux_hppa")
+            ret = checkOSandCPU(u"Linux", u"HPPA");
+        else if (token == u"linux_alpha")
+            ret = checkOSandCPU(u"Linux", u"ALPHA");
+        else if (token == u"linux_aarch64")
+            ret = checkOSandCPU(u"Linux", u"AARCH64");
+        else if (token == u"freebsd_x86")
+            ret = checkOSandCPU(u"FreeBSD", u"x86");
+        else if (token == u"freebsd_x86_64")
+            ret = checkOSandCPU(u"FreeBSD", u"X86_64");
+        else if (token == u"freebsd_powerpc")
+            ret = checkOSandCPU(u"FreeBSD", u"PowerPC");
+        else if (token == u"freebsd_powerpc64")
+            ret = checkOSandCPU(u"FreeBSD", u"PowerPC64");
+        else if (token == u"kfreebsd_x86")
+            ret = checkOSandCPU(u"kFreeBSD", u"x86");
+        else if (token == u"kfreebsd_x86_64")
+            ret = checkOSandCPU(u"kFreeBSD", u"X86_64");
+        else if (token == u"netbsd_x86")
+            ret = checkOSandCPU(u"NetBSD", u"x86");
+        else if (token == u"netbsd_x86_64")
+            ret = checkOSandCPU(u"NetBSD", u"X86_64");
+        else if (token == u"openbsd_x86")
+            ret = checkOSandCPU(u"OpenBSD", u"x86");
+        else if (token == u"openbsd_x86_64")
+            ret = checkOSandCPU(u"OpenBSD", u"X86_64");
+        else if (token == u"dragonfly_x86")
+            ret = checkOSandCPU(u"DragonFly", u"x86");
+        else if (token == u"dragonfly_x86_64")
+            ret = checkOSandCPU(u"DragonFly", u"X86_64");
+        else
+        {
+            OSL_FAIL("Extension Manager: The extension supports an unknown platform. "
+            "Check the platform in the description.xml");
+            ret = false;
+        }
+        return ret;
+    }
+
+} // anon namespace
+
+
+OUString const & getPlatformString()
+{
+    return StrPlatform::get();
+}
+
+bool platform_fits( std::u16string_view platform_string )
+{
+    sal_Int32 index = 0;
+    for (;;)
+    {
+        const std::u16string_view token(
+            o3tl::trim(o3tl::getToken(platform_string, 0, ',', index )) );
+        // check if this platform:
+        if (o3tl::equalsIgnoreAsciiCase( token, StrPlatform::get() ) ||
+            (token.find( '_' ) == std::u16string_view::npos && /* check OS part only */
+             o3tl::equalsIgnoreAsciiCase( token, StrOperatingSystem::get() )))
+        {
+            return true;
+        }
+        if (index < 0)
+            break;
+    }
+    return false;
+}
+
+bool hasValidPlatform( css::uno::Sequence<OUString> const & platformStrings)
+{
+    bool ret = false;
+    for (const OUString& s : platformStrings)
+    {
+        if ( isPlatformSupported( s ) )
+        {
+            ret = true;
+            break;
+        }
+    }
+    return ret;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_resource.cxx b/desktop/source/deployment/misc/dp_resource.cxx
new file mode 100644
index 000000000..682c90e52
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_resource.cxx
@@ -0,0 +1,42 @@
+/* -*- 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 <dp_resource.h>
+#include <unotools/configmgr.hxx>
+#include <i18nlangtag/languagetag.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace dp_misc
+{
+const LanguageTag& getOfficeLanguageTag()
+{
+    static const LanguageTag OFFICE_LANG = []() {
+        OUString slang(utl::ConfigManager::getUILocale());
+        //fallback, the locale is currently only set when the user starts the
+        //office for the first time.
+        if (slang.isEmpty())
+            slang = "en-US";
+        return LanguageTag(slang);
+    }();
+    return OFFICE_LANG;
+}
+}
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_ucb.cxx b/desktop/source/deployment/misc/dp_ucb.cxx
new file mode 100644
index 000000000..28f4192ee
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_ucb.cxx
@@ -0,0 +1,304 @@
+/* -*- 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 <dp_misc.h>
+#include <dp_ucb.h>
+#include <rtl/uri.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <ucbhelper/content.hxx>
+#include <xmlscript/xml_helper.hxx>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/ucb/CommandFailedException.hpp>
+#include <com/sun/star/ucb/ContentInfo.hpp>
+#include <com/sun/star/ucb/ContentInfoAttribute.hpp>
+#include <com/sun/star/ucb/ContentCreationException.hpp>
+#include <comphelper/processfactory.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::ucb;
+
+namespace dp_misc
+{
+
+
+bool create_ucb_content(
+    ::ucbhelper::Content * ret_ucbContent, OUString const & url,
+    Reference<XCommandEnvironment> const & xCmdEnv,
+    bool throw_exc )
+{
+    try {
+        // Existence check...
+        // content ctor/isFolder() will throw exception in case the resource
+        // does not exist.
+
+        // dilemma: no chance to use the given handler here, because it would
+        //          raise no such file dialogs, else no interaction for
+        //          passwords, ...? xxx todo
+        ::ucbhelper::Content ucbContent(
+            url, Reference<XCommandEnvironment>(),
+            comphelper::getProcessComponentContext() );
+
+        ucbContent.isFolder();
+
+        if (ret_ucbContent != nullptr)
+        {
+            ucbContent.setCommandEnvironment( xCmdEnv );
+            *ret_ucbContent = ucbContent;
+        }
+        return true;
+    }
+    catch (const RuntimeException &) {
+        throw;
+    }
+    catch (const Exception &) {
+        if (throw_exc)
+            throw;
+    }
+    return false;
+}
+
+
+bool create_folder(
+    ::ucbhelper::Content * ret_ucb_content, OUString const & url_,
+    Reference<XCommandEnvironment> const & xCmdEnv, bool throw_exc )
+{
+    ::ucbhelper::Content ucb_content;
+    if (create_ucb_content(
+            &ucb_content, url_, xCmdEnv, false /* no throw */ ))
+    {
+        if (ucb_content.isFolder()) {
+            if (ret_ucb_content != nullptr)
+                *ret_ucb_content = ucb_content;
+            return true;
+        }
+    }
+
+    OUString url( url_ );
+    // xxx todo: find parent
+    sal_Int32 slash = url.lastIndexOf( '/' );
+    if (slash < 0) {
+        // fallback:
+        url = expandUnoRcUrl( url );
+        slash = url.lastIndexOf( '/' );
+    }
+    if (slash < 0) {
+        // invalid: has to be at least "auth:/..."
+        if (throw_exc)
+            throw ContentCreationException(
+                "Cannot create folder (invalid path): '" + url + "'",
+                Reference<XInterface>(), ContentCreationError_UNKNOWN );
+        return false;
+    }
+    ::ucbhelper::Content parentContent;
+    if (! create_folder(
+            &parentContent, url.copy( 0, slash ), xCmdEnv, throw_exc ))
+        return false;
+    const Any title( ::rtl::Uri::decode( url.copy( slash + 1 ),
+                                         rtl_UriDecodeWithCharset,
+                                         RTL_TEXTENCODING_UTF8 ) );
+    const Sequence<ContentInfo> infos(
+        parentContent.queryCreatableContentsInfo() );
+    for ( ContentInfo const & info : infos )
+    {
+        // look KIND_FOLDER:
+        if ((info.Attributes & ContentInfoAttribute::KIND_FOLDER) != 0)
+        {
+            // make sure the only required bootstrap property is "Title":
+            Sequence<beans::Property> const & rProps = info.Properties;
+            if ( rProps.getLength() != 1 || rProps[ 0 ].Name != "Title" )
+                continue;
+
+            try {
+                if (parentContent.insertNewContent(
+                        info.Type,
+                        StrTitle::getTitleSequence(),
+                        Sequence<Any>( &title, 1 ),
+                        ucb_content )) {
+                    if (ret_ucb_content != nullptr)
+                        *ret_ucb_content = ucb_content;
+                    return true;
+                }
+            }
+            catch (const RuntimeException &) {
+                throw;
+            }
+            catch (const CommandFailedException &) {
+                // Interaction Handler already handled the error
+                // that has occurred...
+            }
+            catch (const Exception &) {
+                if (throw_exc)
+                    throw;
+                return false;
+            }
+        }
+    }
+    if (throw_exc)
+        throw ContentCreationException(
+            "Cannot create folder: '" + url + "'",
+            Reference<XInterface>(), ContentCreationError_UNKNOWN );
+    return false;
+}
+
+
+bool erase_path( OUString const & url,
+                 Reference<XCommandEnvironment> const & xCmdEnv,
+                 bool throw_exc )
+{
+    ::ucbhelper::Content ucb_content;
+    if (create_ucb_content( &ucb_content, url, xCmdEnv, false /* no throw */ ))
+    {
+        try {
+            ucb_content.executeCommand(
+                "delete", Any( true /* delete physically */ ) );
+        }
+        catch (const RuntimeException &) {
+            throw;
+        }
+        catch (const Exception &) {
+            if (throw_exc)
+                throw;
+            return false;
+        }
+    }
+    return true;
+}
+
+
+std::vector<sal_Int8> readFile( ::ucbhelper::Content & ucb_content )
+{
+    std::vector<sal_Int8> bytes;
+    Reference<io::XOutputStream> xStream(
+        ::xmlscript::createOutputStream( &bytes ) );
+    if (! ucb_content.openStream( xStream ))
+        throw RuntimeException(
+            "::ucbhelper::Content::openStream( XOutputStream ) failed!",
+            nullptr );
+    return bytes;
+}
+
+
+bool readLine( OUString * res, OUString const & startingWith,
+               ::ucbhelper::Content & ucb_content, rtl_TextEncoding textenc )
+{
+    // read whole file:
+    std::vector<sal_Int8> bytes( readFile( ucb_content ) );
+    OUString file( reinterpret_cast<char const *>(bytes.data()),
+                   bytes.size(), textenc );
+    sal_Int32 pos = 0;
+    for (;;)
+    {
+        if (file.match( startingWith, pos ))
+        {
+            OUStringBuffer buf;
+            sal_Int32 start = pos;
+            pos += startingWith.getLength();
+            for (;;)
+            {
+                pos = file.indexOf( LF, pos );
+                if (pos < 0) { // EOF
+                    buf.append( file.subView(start) );
+                }
+                else
+                {
+                    if (pos > 0 && file[ pos - 1 ] == CR)
+                    {
+                        // consume extra CR
+                        buf.append( file.subView(start, pos - start - 1) );
+                        ++pos;
+                    }
+                    else
+                        buf.append( file.subView(start, pos - start) );
+                    ++pos; // consume LF
+                    // check next line:
+                    if (pos < file.getLength() &&
+                        (file[ pos ] == ' ' || file[ pos ] == '\t'))
+                    {
+                        buf.append( ' ' );
+                        ++pos;
+                        start = pos;
+                        continue;
+                    }
+                }
+                break;
+            }
+            *res = buf.makeStringAndClear();
+            return true;
+        }
+        // next line:
+        sal_Int32 next_lf = file.indexOf( LF, pos );
+        if (next_lf < 0) // EOF
+            break;
+        pos = next_lf + 1;
+    }
+    return false;
+}
+
+bool readProperties( std::vector< std::pair< OUString, OUString> > & out_result,
+                     ::ucbhelper::Content & ucb_content )
+{
+    // read whole file:
+    std::vector<sal_Int8> bytes( readFile( ucb_content ) );
+    OUString file( reinterpret_cast<char const *>(bytes.data()),
+                   bytes.size(), RTL_TEXTENCODING_UTF8);
+    sal_Int32 pos = 0;
+
+    for (;;)
+    {
+
+        OUStringBuffer buf;
+        sal_Int32 start = pos;
+
+        bool bEOF = false;
+        pos = file.indexOf( LF, pos );
+        if (pos < 0) { // EOF
+            buf.append( file.subView(start) );
+            bEOF = true;
+        }
+        else
+        {
+            if (pos > 0 && file[ pos - 1 ] == CR)
+                // consume extra CR
+                buf.append( file.subView(start, pos - start - 1) );
+            else
+                buf.append( file.subView(start, pos - start) );
+            pos++;
+        }
+        OUString aLine = buf.makeStringAndClear();
+
+        sal_Int32 posEqual = aLine.indexOf('=');
+        if (posEqual > 0 && (posEqual + 1) <  aLine.getLength())
+        {
+            OUString name = aLine.copy(0, posEqual);
+            OUString value = aLine.copy(posEqual + 1);
+            out_result.emplace_back(name, value);
+        }
+
+        if (bEOF)
+            break;
+    }
+    return false;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_update.cxx b/desktop/source/deployment/misc/dp_update.cxx
new file mode 100644
index 000000000..7116be42b
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_update.cxx
@@ -0,0 +1,408 @@
+/* -*- 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 <config_folders.h>
+
+#include <dp_update.hxx>
+#include <dp_version.hxx>
+#include <dp_identifier.hxx>
+#include <dp_descriptioninfoset.hxx>
+
+#include <com/sun/star/ucb/CommandAbortedException.hpp>
+#include <com/sun/star/ucb/CommandFailedException.hpp>
+#include <osl/diagnose.h>
+#include <rtl/bootstrap.hxx>
+#include <sal/log.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+
+namespace dp_misc {
+namespace {
+
+int determineHighestVersion(
+    OUString const & userVersion,
+    OUString const & sharedVersion,
+    OUString const & bundledVersion,
+    OUString const & onlineVersion)
+{
+    int index = 0;
+    OUString  greatest = userVersion;
+    if (dp_misc::compareVersions(sharedVersion, greatest) == dp_misc::GREATER)
+    {
+        index = 1;
+        greatest = sharedVersion;
+    }
+    if (dp_misc::compareVersions(bundledVersion, greatest) == dp_misc::GREATER)
+    {
+        index = 2;
+        greatest = bundledVersion;
+    }
+    if (dp_misc::compareVersions(onlineVersion, greatest) == dp_misc::GREATER)
+    {
+        index = 3;
+    }
+    return index;
+}
+
+Sequence< Reference< xml::dom::XElement > >
+getUpdateInformation( Reference<deployment::XUpdateInformationProvider > const & updateInformation,
+                      Sequence< OUString > const & urls,
+                      OUString const & identifier,
+                      uno::Any & out_error)
+{
+    try {
+        return updateInformation->getUpdateInformation(urls, identifier);
+    } catch (const uno::RuntimeException &) {
+        throw;
+    } catch (const ucb::CommandFailedException & e) {
+        out_error = e.Reason;
+    } catch (const ucb::CommandAbortedException &) {
+    } catch (const uno::Exception & e) {
+        out_error <<= e;
+    }
+    return
+        Sequence<Reference< xml::dom::XElement > >();
+}
+
+void getOwnUpdateInfos(
+        Reference<uno::XComponentContext> const & xContext,
+        Reference<deployment::XUpdateInformationProvider > const &  updateInformation,
+        UpdateInfoMap& inout_map, std::vector<std::pair<Reference<deployment::XPackage>, uno::Any> > & out_errors,
+        bool & out_allFound)
+{
+    bool bAllHaveOwnUpdateInformation = true;
+    for (auto & inout : inout_map)
+    {
+        OSL_ASSERT(inout.second.extension.is());
+        Sequence<OUString> urls(inout.second.extension->getUpdateInformationURLs());
+        if (urls.hasElements())
+        {
+            const OUString search_id = dp_misc::getIdentifier(inout.second.extension);
+            SAL_INFO( "extensions.update", "Searching update for " << search_id );
+            uno::Any anyError;
+            //It is unclear from the idl if there can be a null reference returned.
+            //However all valid information should be the same
+            const Sequence<Reference< xml::dom::XElement > >
+                infos(getUpdateInformation(updateInformation, urls, search_id, anyError));
+            if (anyError.hasValue())
+                out_errors.emplace_back(inout.second.extension, anyError);
+
+            for (const Reference< xml::dom::XElement >& element : infos)
+            {
+                dp_misc::DescriptionInfoset infoset(
+                    xContext,
+                    Reference< xml::dom::XNode >(element, UNO_QUERY_THROW));
+                if (!infoset.hasDescription())
+                    continue;
+                std::optional< OUString > result_id(infoset.getIdentifier());
+                if (!result_id)
+                    continue;
+                SAL_INFO( "extensions.update", "  found version "
+                          << infoset.getVersion() << " for " << *result_id );
+                if (*result_id != search_id)
+                    continue;
+                inout.second.version = infoset.getVersion();
+                inout.second.info.set(element, UNO_QUERY_THROW);
+                break;
+            }
+        }
+        else
+        {
+            bAllHaveOwnUpdateInformation = false;
+        }
+    }
+    out_allFound = bAllHaveOwnUpdateInformation;
+}
+
+void getDefaultUpdateInfos(
+    Reference<uno::XComponentContext> const & xContext,
+    Reference<deployment::XUpdateInformationProvider > const &  updateInformation,
+    UpdateInfoMap& inout_map,
+     std::vector<std::pair<Reference<deployment::XPackage>, uno::Any> > & out_errors)
+{
+    const OUString sDefaultURL(dp_misc::getExtensionDefaultUpdateURL());
+    OSL_ASSERT(!sDefaultURL.isEmpty());
+
+    Any anyError;
+    const Sequence< Reference< xml::dom::XElement > >
+        infos(
+            getUpdateInformation(
+                updateInformation,
+                Sequence< OUString >(&sDefaultURL, 1), OUString(), anyError));
+    if (anyError.hasValue())
+        out_errors.emplace_back(Reference<deployment::XPackage>(), anyError);
+    for (const Reference< xml::dom::XElement >& element : infos)
+    {
+        Reference< xml::dom::XNode > node(element, UNO_QUERY_THROW);
+        dp_misc::DescriptionInfoset infoset(xContext, node);
+        std::optional< OUString > id(infoset.getIdentifier());
+        if (!id) {
+            continue;
+        }
+        UpdateInfoMap::iterator j = inout_map.find(*id);
+        if (j != inout_map.end())
+        {
+            //skip those extension which provide its own update urls
+            if (j->second.extension->getUpdateInformationURLs().getLength())
+                continue;
+            OUString v(infoset.getVersion());
+            //look for the highest version in the online repository
+            if (dp_misc::compareVersions(v, j->second.version) ==
+                dp_misc::GREATER)
+            {
+                j->second.version = v;
+                j->second.info = node;
+            }
+        }
+    }
+}
+
+bool containsBundledOnly(Sequence<Reference<deployment::XPackage> > const & sameIdExtensions)
+{
+    OSL_ASSERT(sameIdExtensions.getLength() == 3);
+    return !sameIdExtensions[0].is() && !sameIdExtensions[1].is() && sameIdExtensions[2].is();
+}
+
+/** Returns true if the list of extensions are bundled extensions and there are no
+    other extensions with the same identifier in the shared or user repository.
+    If extensionList is NULL, then it is checked if there are only bundled extensions.
+*/
+bool onlyBundledExtensions(
+    Reference<deployment::XExtensionManager> const & xExtMgr,
+    std::vector< Reference<deployment::XPackage > > const * extensionList)
+{
+    OSL_ASSERT(xExtMgr.is());
+    bool bOnlyBundled = true;
+    if (extensionList)
+    {
+        for (auto const& elem : *extensionList)
+        {
+            Sequence<Reference<deployment::XPackage> > seqExt = xExtMgr->getExtensionsWithSameIdentifier(
+                dp_misc::getIdentifier(elem), elem->getName(), Reference<ucb::XCommandEnvironment>());
+
+            bOnlyBundled = containsBundledOnly(seqExt);
+            if (!bOnlyBundled)
+                break;
+        }
+    }
+    else
+    {
+        const uno::Sequence< uno::Sequence< Reference<deployment::XPackage > > > seqAllExt =
+            xExtMgr->getAllExtensions(Reference<task::XAbortChannel>(), Reference<ucb::XCommandEnvironment>());
+
+        for (int pos(0), nLen(seqAllExt.getLength()); bOnlyBundled && pos != nLen; ++pos)
+        {
+            bOnlyBundled = containsBundledOnly(seqAllExt[pos]);
+        }
+    }
+    return bOnlyBundled;
+}
+
+} // anon namespace
+
+
+OUString getExtensionDefaultUpdateURL()
+{
+    OUString sUrl(
+        "${$BRAND_BASE_DIR/" LIBO_ETC_FOLDER "/" SAL_CONFIGFILE("version")
+        ":Version:ExtensionUpdateURL}");
+    ::rtl::Bootstrap::expandMacros(sUrl);
+    return sUrl;
+}
+
+/* returns the index of the greatest version, starting with 0
+
+ */
+UPDATE_SOURCE isUpdateUserExtension(
+    bool bReadOnlyShared,
+    OUString const & userVersion,
+    OUString const & sharedVersion,
+    OUString const & bundledVersion,
+    OUString const & onlineVersion)
+{
+    UPDATE_SOURCE retVal = UPDATE_SOURCE_NONE;
+    if (bReadOnlyShared)
+    {
+        if (!userVersion.isEmpty())
+        {
+            int index = determineHighestVersion(
+                userVersion, sharedVersion, bundledVersion, onlineVersion);
+            if (index == 1)
+                retVal = UPDATE_SOURCE_SHARED;
+            else if (index == 2)
+                retVal = UPDATE_SOURCE_BUNDLED;
+            else if (index == 3)
+                retVal = UPDATE_SOURCE_ONLINE;
+        }
+        else if (!sharedVersion.isEmpty())
+        {
+            int index = determineHighestVersion(
+                OUString(), sharedVersion, bundledVersion, onlineVersion);
+            if (index == 2)
+                retVal = UPDATE_SOURCE_BUNDLED;
+            else if (index == 3)
+                retVal = UPDATE_SOURCE_ONLINE;
+
+        }
+    }
+    else
+    {
+        if (!userVersion.isEmpty())
+        {
+            int index = determineHighestVersion(
+                userVersion, sharedVersion, bundledVersion, onlineVersion);
+            if (index == 1)
+                retVal = UPDATE_SOURCE_SHARED;
+            else if (index == 2)
+                retVal = UPDATE_SOURCE_BUNDLED;
+            else if (index == 3)
+                retVal = UPDATE_SOURCE_ONLINE;
+        }
+    }
+
+    return retVal;
+}
+
+UPDATE_SOURCE isUpdateSharedExtension(
+    bool bReadOnlyShared,
+    OUString const & sharedVersion,
+    OUString const & bundledVersion,
+    OUString const & onlineVersion)
+{
+    if (bReadOnlyShared)
+        return UPDATE_SOURCE_NONE;
+    UPDATE_SOURCE retVal = UPDATE_SOURCE_NONE;
+
+    if (!sharedVersion.isEmpty())
+    {
+        int index = determineHighestVersion(
+            OUString(), sharedVersion, bundledVersion, onlineVersion);
+        if (index == 2)
+            retVal = UPDATE_SOURCE_BUNDLED;
+        else if (index == 3)
+            retVal = UPDATE_SOURCE_ONLINE;
+    }
+    return retVal;
+}
+
+Reference<deployment::XPackage>
+getExtensionWithHighestVersion(
+    Sequence<Reference<deployment::XPackage> > const & seqExt)
+{
+    if (!seqExt.hasElements())
+        return Reference<deployment::XPackage>();
+
+    Reference<deployment::XPackage> greatest;
+    sal_Int32 len = seqExt.getLength();
+
+    for (sal_Int32 i = 0; i < len; i++)
+    {
+        if (!greatest.is())
+        {
+            greatest = seqExt[i];
+            continue;
+        }
+        Reference<deployment::XPackage> const & current = seqExt[i];
+        //greatest has a value
+        if (! current.is())
+            continue;
+
+        if (dp_misc::compareVersions(current->getVersion(), greatest->getVersion()) == dp_misc::GREATER)
+            greatest = current;
+    }
+    return greatest;
+}
+
+UpdateInfo::UpdateInfo( Reference< deployment::XPackage> const & ext):
+extension(ext)
+{
+}
+
+
+UpdateInfoMap getOnlineUpdateInfos(
+    Reference<uno::XComponentContext> const &xContext,
+    Reference<deployment::XExtensionManager> const & xExtMgr,
+    Reference<deployment::XUpdateInformationProvider > const & updateInformation,
+    std::vector<Reference<deployment::XPackage > > const * extensionList,
+    std::vector<std::pair< Reference<deployment::XPackage>, uno::Any> > & out_errors)
+{
+    OSL_ASSERT(xExtMgr.is());
+    UpdateInfoMap infoMap;
+    if (!xExtMgr.is() || onlyBundledExtensions(xExtMgr, extensionList))
+        return infoMap;
+
+    if (!extensionList)
+    {
+        const uno::Sequence< uno::Sequence< Reference<deployment::XPackage > > > seqAllExt =  xExtMgr->getAllExtensions(
+            Reference<task::XAbortChannel>(), Reference<ucb::XCommandEnvironment>());
+
+        //fill the UpdateInfoMap. key = extension identifier, value = UpdateInfo
+        for (int pos = seqAllExt.getLength(); pos --; )
+        {
+            uno::Sequence<Reference<deployment::XPackage> > const &   seqExt = seqAllExt[pos];
+
+            Reference<deployment::XPackage> extension = getExtensionWithHighestVersion(seqExt);
+            OSL_ASSERT(extension.is());
+
+            std::pair<UpdateInfoMap::iterator, bool> insertRet = infoMap.emplace(
+                    dp_misc::getIdentifier(extension), UpdateInfo(extension));
+            OSL_ASSERT(insertRet.second);
+        }
+    }
+    else
+    {
+        for (auto const& elem : *extensionList)
+        {
+            OSL_ASSERT(elem.is());
+            std::pair<UpdateInfoMap::iterator, bool> insertRet = infoMap.emplace(
+                    dp_misc::getIdentifier(elem), UpdateInfo(elem));
+            OSL_ASSERT(insertRet.second);
+        }
+    }
+
+    //Now find the update information for the extensions which provide their own
+    //URLs to update information.
+    bool bAllInfosObtained = false;
+    getOwnUpdateInfos(xContext, updateInformation, infoMap, out_errors, bAllInfosObtained);
+
+    if (!bAllInfosObtained)
+        getDefaultUpdateInfos(xContext, updateInformation, infoMap, out_errors);
+    return infoMap;
+}
+OUString getHighestVersion(
+    OUString const & sharedVersion,
+    OUString const & bundledVersion,
+    OUString const & onlineVersion)
+{
+    int index = determineHighestVersion(OUString(), sharedVersion, bundledVersion, onlineVersion);
+    switch (index)
+    {
+    case 1: return sharedVersion;
+    case 2: return bundledVersion;
+    case 3: return onlineVersion;
+    default: OSL_ASSERT(false);
+    }
+
+    return OUString();
+}
+} //namespace dp_misc
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/dp_version.cxx b/desktop/source/deployment/misc/dp_version.cxx
new file mode 100644
index 000000000..703045dde
--- /dev/null
+++ b/desktop/source/deployment/misc/dp_version.cxx
@@ -0,0 +1,63 @@
+/* -*- 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/ustring.hxx>
+
+#include <dp_version.hxx>
+
+namespace {
+
+OUString getElement(OUString const & version, ::sal_Int32 * index)
+{
+    while (*index < version.getLength() && version[*index] == '0') {
+        ++*index;
+    }
+    return version.getToken(0, '.', *index);
+}
+
+}
+
+namespace dp_misc {
+
+::dp_misc::Order compareVersions(
+    OUString const & version1, OUString const & version2)
+{
+    for (::sal_Int32 i1 = 0, i2 = 0; i1 >= 0 || i2 >= 0;) {
+        OUString e1(i1 >= 0 ? getElement(version1, &i1) : OUString());
+        OUString e2(i2 >= 0 ? getElement(version2, &i2) : OUString());
+        if (e1.getLength() < e2.getLength()) {
+            return ::dp_misc::LESS;
+        } else if (e1.getLength() > e2.getLength()) {
+            return ::dp_misc::GREATER;
+        } else if (e1 < e2) {
+            return ::dp_misc::LESS;
+        } else if (e1 > e2) {
+            return ::dp_misc::GREATER;
+        }
+    }
+    return ::dp_misc::EQUAL;
+}
+
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/misc/lockfile.cxx b/desktop/source/deployment/misc/lockfile.cxx
new file mode 100644
index 000000000..206da8286
--- /dev/null
+++ b/desktop/source/deployment/misc/lockfile.cxx
@@ -0,0 +1,211 @@
+/* -*- 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 <memory>
+
+#include <time.h>
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#endif
+#include <comphelper/random.hxx>
+#include <sal/types.h>
+#include <osl/file.hxx>
+#include <osl/security.hxx>
+#include <unotools/bootstrap.hxx>
+#include <tools/config.hxx>
+
+#include <lockfile.hxx>
+
+using namespace ::osl;
+using namespace ::utl;
+
+
+static OString impl_getHostname()
+{
+    OString aHost;
+#ifdef _WIN32
+    /*
+       prevent windows from connecting to the net to get its own
+       hostname by using the netbios name
+       */
+    DWORD sz = MAX_COMPUTERNAME_LENGTH + 1;
+    TCHAR szHost[MAX_COMPUTERNAME_LENGTH + 1];
+    if (GetComputerNameA(szHost, &sz))
+        aHost = OString(szHost);
+    else
+        aHost = OString("UNKNOWN");
+#else
+    /* Don't do dns lookup on Linux either */
+    char pHostName[1024];
+
+    if ( gethostname( pHostName, sizeof( pHostName ) - 1 ) == 0 )
+    {
+        pHostName[sizeof( pHostName ) - 1] = '\0';
+        aHost = OString( pHostName );
+    }
+    else
+        aHost = OString("UNKNOWN");
+#endif
+
+    return aHost;
+}
+
+namespace desktop {
+
+    Lockfile::Lockfile( bool bIPCserver )
+    :m_bIPCserver(bIPCserver)
+    ,m_bRemove(false)
+    ,m_bIsLocked(false)
+    {
+        // build the file-url to use for the lock
+        OUString aUserPath;
+        utl::Bootstrap::locateUserInstallation( aUserPath );
+        m_aLockname = aUserPath + "/.lock";
+
+        // generate ID
+        const int nIdBytes = 16;
+        char tmpId[nIdBytes*2+1];
+        time_t t = time(nullptr);
+        for (int i = 0; i<nIdBytes; i++) {
+            int tmpByte = comphelper::rng::uniform_int_distribution(0, 0xFF);
+            sprintf( tmpId+i*2, "%02X", tmpByte );
+        }
+        tmpId[nIdBytes*2]=0x00;
+        m_aId = OUString::createFromAscii( tmpId );
+
+        // generate date string
+        char *tmpTime = ctime( &t );
+        if (tmpTime != nullptr) {
+            m_aDate = OUString::createFromAscii( tmpTime );
+            sal_Int32 i = m_aDate.indexOf('\n');
+            if (i > 0)
+                m_aDate = m_aDate.copy(0, i);
+        }
+
+
+        // try to create file
+        File aFile(m_aLockname);
+        if (aFile.open( osl_File_OpenFlag_Create ) == File::E_EXIST) {
+            m_bIsLocked = true;
+        } else {
+            // new lock created
+            aFile.close( );
+            syncToFile( );
+            m_bRemove = true;
+        }
+    }
+
+    bool Lockfile::check( fpExecWarning execWarning )
+    {
+
+        if (m_bIsLocked) {
+            // lock existed, ask user what to do
+            if (isStale() ||
+                (execWarning != nullptr && (*execWarning)( this ))) {
+                // remove file and create new
+                File::remove( m_aLockname );
+                File aFile(m_aLockname);
+                (void)aFile.open( osl_File_OpenFlag_Create );
+                aFile.close( );
+                syncToFile( );
+                m_bRemove = true;
+                return true;
+            } else {
+                //leave alone and return false
+                m_bRemove = false;
+                return false;
+            }
+        } else {
+            // lock was created by us
+            return true;
+        }
+    }
+
+    bool Lockfile::isStale() const
+    {
+        // this checks whether the lockfile was created on the same
+        // host by the same user. Should this be the case it is safe
+        // to assume that it is a stale lockfile which can be overwritten
+        OUString aLockname = m_aLockname;
+        Config aConfig(aLockname);
+        aConfig.SetGroup(LOCKFILE_GROUP);
+        OString aIPCserver  = aConfig.ReadKey( LOCKFILE_IPCKEY );
+        if (!aIPCserver.equalsIgnoreAsciiCase("true"))
+            return false;
+
+        OString aHost = aConfig.ReadKey( LOCKFILE_HOSTKEY );
+        OString aUser = aConfig.ReadKey( LOCKFILE_USERKEY );
+
+        // lockfile from same host?
+        OString myHost( impl_getHostname() );
+        if (aHost == myHost) {
+            // lockfile by same UID
+            OUString myUserName;
+            Security aSecurity;
+            aSecurity.getUserName( myUserName );
+            OString myUser(OUStringToOString(myUserName, RTL_TEXTENCODING_ASCII_US));
+            if (aUser == myUser)
+                return true;
+        }
+        return false;
+    }
+
+    void Lockfile::syncToFile() const
+    {
+        OUString aLockname = m_aLockname;
+        Config aConfig(aLockname);
+        aConfig.SetGroup(LOCKFILE_GROUP);
+
+        // get information
+        OString aHost( impl_getHostname() );
+        OUString aUserName;
+        Security aSecurity;
+        aSecurity.getUserName( aUserName );
+        OString aUser  = OUStringToOString( aUserName, RTL_TEXTENCODING_ASCII_US );
+        OString aTime  = OUStringToOString( m_aDate, RTL_TEXTENCODING_ASCII_US );
+        OString aStamp = OUStringToOString( m_aId, RTL_TEXTENCODING_ASCII_US );
+
+        // write information
+        aConfig.WriteKey( LOCKFILE_USERKEY,  aUser );
+        aConfig.WriteKey( LOCKFILE_HOSTKEY,  aHost );
+        aConfig.WriteKey( LOCKFILE_STAMPKEY, aStamp );
+        aConfig.WriteKey( LOCKFILE_TIMEKEY,  aTime );
+        aConfig.WriteKey(
+            LOCKFILE_IPCKEY,
+            m_bIPCserver ? OString("true") : OString("false") );
+        aConfig.Flush( );
+    }
+
+    Lockfile::~Lockfile()
+    {
+        // unlock userdata by removing file
+        if ( m_bRemove )
+            File::remove( m_aLockname );
+    }
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */