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

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

3 files changed, 1946 insertions, 0 deletions

diff --git a/desktop/source/deployment/registry/component/dp_compbackenddb.cxx b/desktop/source/deployment/registry/component/dp_compbackenddb.cxx
new file mode 100644
index 000000000..fd9bb2c61
--- /dev/null
+++ b/desktop/source/deployment/registry/component/dp_compbackenddb.cxx
@@ -0,0 +1,131 @@
+/* -*- 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 <cppuhelper/exc_hlp.hxx>
+#include <com/sun/star/deployment/DeploymentException.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include "dp_compbackenddb.hxx"
+
+
+using namespace ::com::sun::star::uno;
+
+constexpr OUStringLiteral EXTENSION_REG_NS = u"http://openoffice.org/extensionmanager/component-registry/2010";
+constexpr OUStringLiteral NS_PREFIX = u"comp";
+constexpr OUStringLiteral ROOT_ELEMENT_NAME = u"component-backend-db";
+constexpr OUStringLiteral KEY_ELEMENT_NAME = u"component";
+
+namespace dp_registry::backend::component {
+
+ComponentBackendDb::ComponentBackendDb(
+    Reference<XComponentContext> const &  xContext,
+    OUString const & url):BackendDb(xContext, url)
+{
+
+}
+
+OUString ComponentBackendDb::getDbNSName()
+{
+    return EXTENSION_REG_NS;
+}
+
+OUString ComponentBackendDb::getNSPrefix()
+{
+    return NS_PREFIX;
+}
+
+OUString ComponentBackendDb::getRootElementName()
+{
+    return ROOT_ELEMENT_NAME;
+}
+
+OUString ComponentBackendDb::getKeyElementName()
+{
+    return KEY_ELEMENT_NAME;
+}
+
+void ComponentBackendDb::addEntry(OUString const & url, Data const & data)
+{
+    try{
+        if (!activateEntry(url))
+        {
+            Reference<css::xml::dom::XNode> componentNode = writeKeyElement(url);
+            writeSimpleElement(u"java-type-library",
+                               OUString::boolean(data.javaTypeLibrary),
+                               componentNode);
+
+            writeSimpleList(
+                data.implementationNames,
+                u"implementation-names",
+                u"name",
+                componentNode);
+
+            writeVectorOfPair(
+                data.singletons,
+                u"singletons",
+                u"item",
+                u"key",
+                u"value",
+                componentNode);
+
+            save();
+        }
+    }
+    catch(const css::uno::Exception &)
+    {
+        Any exc( ::cppu::getCaughtException() );
+        throw css::deployment::DeploymentException(
+            "Extension Manager: failed to write data entry in backend db: " +
+            m_urlDb, nullptr, exc);
+    }
+}
+
+ComponentBackendDb::Data ComponentBackendDb::getEntry(std::u16string_view url)
+{
+    try
+    {
+        ComponentBackendDb::Data retData;
+        Reference<css::xml::dom::XNode> aNode = getKeyElement(url);
+        if (aNode.is())
+        {
+            bool bJava = readSimpleElement(u"java-type-library", aNode) == "true";
+            retData.javaTypeLibrary = bJava;
+
+            retData.implementationNames =
+                readList( aNode, u"implementation-names", u"name");
+
+            retData.singletons =
+                readVectorOfPair( aNode, u"singletons", u"item", u"key", u"value");
+        }
+        return retData;
+    }
+    catch(const css::uno::Exception &)
+    {
+        Any exc( ::cppu::getCaughtException() );
+        throw css::deployment::DeploymentException(
+            "Extension Manager: failed to read data entry in backend db: " +
+            m_urlDb, nullptr, exc);
+    }
+}
+
+
+} // namespace dp_registry::backend::component
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/registry/component/dp_compbackenddb.hxx b/desktop/source/deployment/registry/component/dp_compbackenddb.hxx
new file mode 100644
index 000000000..84153b6fa
--- /dev/null
+++ b/desktop/source/deployment/registry/component/dp_compbackenddb.hxx
@@ -0,0 +1,95 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <rtl/ustring.hxx>
+#include <rtl/string.hxx>
+#include <vector>
+#include <deque>
+#include <string_view>
+
+#include <dp_backenddb.hxx>
+
+namespace com::sun::star::uno { class XComponentContext; }
+
+namespace dp_registry::backend::component {
+
+/* The XML file stores the extensions which are currently registered.
+   They will be removed when they are revoked.
+   The format looks like this:
+
+<?xml version="1.0"?>
+<component-backend-db xmlns="http://openoffice.org/extensionmanager/component-registry/2010">
+  <component url="vnd.sun.star.expand:$UNO_USER_PACKAGES_CACHE/uno_packages/5CD5.tmp_/leaves1.oxt/extensionoptions.jar">
+    <name>FileName</name>
+    <java-type-library>true</java-type-library>
+    <implementation-names>
+      <name>com.sun.star.comp.extensionoptions.OptionsEventHandler$_OptionsEventHandler</name>
+      ...
+    </implementation-names>
+    <singletons>
+      <item>
+        <key>com.sun.star.java.theJavaVirtualMachine</key>
+        <value>com.sun.star.java.JavaVirtualMachine</value>
+      </item>
+      ...
+    </singletons>
+  </component>
+
+  <component ...>
+  ...
+</component-backend-db>
+ */
+class ComponentBackendDb: public dp_registry::backend::BackendDb
+{
+protected:
+    virtual OUString getDbNSName() override;
+    virtual OUString getNSPrefix() override;
+    virtual OUString getRootElementName() override;
+    virtual OUString getKeyElementName() override;
+
+public:
+    struct Data
+    {
+        Data(): javaTypeLibrary(false) {};
+
+        std::deque< OUString> implementationNames;
+        std::vector< std::pair< OUString, OUString> >singletons;
+            // map from singleton names to implementation names
+        bool javaTypeLibrary;
+    };
+
+public:
+
+    ComponentBackendDb( css::uno::Reference<css::uno::XComponentContext> const &  xContext,
+                        OUString const & url);
+
+    void addEntry(OUString const & url, Data const & data);
+
+    Data getEntry(std::u16string_view url);
+
+
+};
+
+
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/desktop/source/deployment/registry/component/dp_component.cxx b/desktop/source/deployment/registry/component/dp_component.cxx
new file mode 100644
index 000000000..b9aa6518a
--- /dev/null
+++ b/desktop/source/deployment/registry/component/dp_component.cxx
@@ -0,0 +1,1720 @@
+/* -*- 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 <strings.hrc>
+#include <dp_misc.h>
+#include <dp_shared.hxx>
+#include <dp_backend.h>
+#include <dp_platform.hxx>
+#include <dp_ucb.h>
+#include <rtl/string.hxx>
+#include <rtl/strbuf.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/uri.hxx>
+#include <sal/log.hxx>
+#include <cppuhelper/exc_hlp.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <ucbhelper/content.hxx>
+#include <comphelper/sequence.hxx>
+#include <utility>
+#include <xmlscript/xml_helper.hxx>
+#include <svl/inettype.hxx>
+#include <tools/diagnose_ex.h>
+#include <o3tl/string_view.hxx>
+#include <com/sun/star/beans/NamedValue.hpp>
+#include <com/sun/star/deployment/DeploymentException.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/container/XNameContainer.hpp>
+#include <com/sun/star/container/XSet.hpp>
+#include <com/sun/star/registry/XSimpleRegistry.hpp>
+#include <com/sun/star/registry/XImplementationRegistration.hpp>
+#include <com/sun/star/loader/XImplementationLoader.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/ucb/NameClash.hpp>
+#include <com/sun/star/util/theMacroExpander.hpp>
+#include <algorithm>
+#include <deque>
+#include <memory>
+#include <string_view>
+#include <unordered_map>
+#include <vector>
+#include "dp_compbackenddb.hxx"
+
+using namespace ::dp_misc;
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::ucb;
+
+namespace dp_registry::backend::component {
+namespace {
+
+/** return a vector of bootstrap variables which have been provided
+    as command arguments.
+*/
+std::vector<OUString> getCmdBootstrapVariables()
+{
+    std::vector<OUString> ret;
+    sal_uInt32 count = osl_getCommandArgCount();
+    for (sal_uInt32 i = 0; i < count; i++)
+    {
+        OUString arg;
+        osl_getCommandArg(i, &arg.pData);
+        if (arg.startsWith("-env:"))
+            ret.push_back(arg);
+    }
+    return ret;
+}
+
+bool jarManifestHeaderPresent(
+    OUString const & url, OUString const & name,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    OUString buf = "vnd.sun.star.zip://"
+        + ::rtl::Uri::encode(
+            url, rtl_UriCharClassRegName, rtl_UriEncodeIgnoreEscapes,
+            RTL_TEXTENCODING_UTF8 )
+        + "/META-INF/MANIFEST.MF";
+    ::ucbhelper::Content manifestContent;
+    OUString line;
+    return
+        create_ucb_content(
+            &manifestContent, buf, xCmdEnv,
+            false /* no throw */ )
+        && readLine( &line, name, manifestContent, RTL_TEXTENCODING_ASCII_US );
+}
+
+
+class BackendImpl : public ::dp_registry::backend::PackageRegistryBackend
+{
+    class ComponentPackageImpl : public ::dp_registry::backend::Package
+    {
+        BackendImpl * getMyBackend() const;
+
+        const OUString m_loader;
+
+        enum class Reg { Uninit, Void, Registered, NotRegistered, MaybeRegistered };
+        Reg m_registered;
+
+        void getComponentInfo(
+            ComponentBackendDb::Data * data,
+            std::vector< css::uno::Reference< css::uno::XInterface > > *
+                factories,
+            Reference<XComponentContext> const & xContext );
+
+        void componentLiveInsertion(
+            ComponentBackendDb::Data const & data,
+            std::vector< css::uno::Reference< css::uno::XInterface > > const &
+                factories);
+
+        void componentLiveRemoval(ComponentBackendDb::Data const & data);
+
+        // Package
+        virtual beans::Optional< beans::Ambiguous<sal_Bool> > isRegistered_(
+            ::osl::ResettableMutexGuard & guard,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+        virtual void processPackage_(
+            ::osl::ResettableMutexGuard & guard,
+            bool registerPackage,
+            bool startup,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+
+        Reference<registry::XSimpleRegistry> getRDB() const;
+
+    public:
+        ComponentPackageImpl(
+            ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+            OUString const & url, OUString const & name,
+            Reference<deployment::XPackageTypeInfo> const & xPackageType,
+            OUString loader, bool bRemoved,
+            OUString const & identifier);
+    };
+    friend class ComponentPackageImpl;
+
+    class ComponentsPackageImpl : public ::dp_registry::backend::Package
+    {
+        BackendImpl * getMyBackend() const;
+
+        // Package
+        virtual beans::Optional< beans::Ambiguous<sal_Bool> > isRegistered_(
+            ::osl::ResettableMutexGuard & guard,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+        virtual void processPackage_(
+            ::osl::ResettableMutexGuard & guard,
+            bool registerPackage,
+            bool startup,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+    public:
+        ComponentsPackageImpl(
+            ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+            OUString const & url, OUString const & name,
+            Reference<deployment::XPackageTypeInfo> const & xPackageType,
+            bool bRemoved, OUString const & identifier);
+    };
+    friend class ComponentsPackageImpl;
+
+    class TypelibraryPackageImpl : public ::dp_registry::backend::Package
+    {
+        BackendImpl * getMyBackend() const;
+
+        const bool m_jarFile;
+
+        // Package
+        virtual beans::Optional< beans::Ambiguous<sal_Bool> > isRegistered_(
+            ::osl::ResettableMutexGuard & guard,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+        virtual void processPackage_(
+            ::osl::ResettableMutexGuard & guard,
+            bool registerPackage,
+            bool startup,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+
+    public:
+        TypelibraryPackageImpl(
+            ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+            OUString const & url, OUString const & name,
+            Reference<deployment::XPackageTypeInfo> const & xPackageType,
+            bool jarFile, bool bRemoved,
+            OUString const & identifier);
+    };
+    friend class TypelibraryPackageImpl;
+
+    /** Serves for unregistering packages that were registered on a
+        different platform. This can happen if one has remotely mounted
+        /home, for example.
+     */
+    class OtherPlatformPackageImpl : public ::dp_registry::backend::Package
+    {
+    public:
+        OtherPlatformPackageImpl(
+            ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+            OUString const & url, OUString const & name,
+            Reference<deployment::XPackageTypeInfo> const & xPackageType,
+            bool bRemoved, OUString const & identifier, OUString platform);
+
+    private:
+        BackendImpl * getMyBackend() const;
+
+        Reference<registry::XSimpleRegistry> impl_openRDB() const;
+        Reference<XInterface> impl_createInstance(OUString const& rService) const;
+
+        // Package
+        virtual beans::Optional< beans::Ambiguous<sal_Bool> > isRegistered_(
+            ::osl::ResettableMutexGuard & guard,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+        virtual void processPackage_(
+            ::osl::ResettableMutexGuard & guard,
+            bool registerPackage,
+            bool startup,
+            ::rtl::Reference<AbortChannel> const & abortChannel,
+            Reference<XCommandEnvironment> const & xCmdEnv ) override;
+
+    private:
+        OUString const m_aPlatform;
+    };
+    friend class OtherPlatformPackageImpl;
+
+    std::deque<OUString> m_jar_typelibs;
+    std::deque<OUString> m_rdb_typelibs;
+    std::deque<OUString> m_components;
+
+    enum RcItem { RCITEM_JAR_TYPELIB, RCITEM_RDB_TYPELIB, RCITEM_COMPONENTS };
+
+    std::deque<OUString> & getRcItemList( RcItem kind ) {
+        switch (kind)
+        {
+        case RCITEM_JAR_TYPELIB:
+            return m_jar_typelibs;
+        case RCITEM_RDB_TYPELIB:
+            return m_rdb_typelibs;
+        default: // case RCITEM_COMPONENTS
+            return m_components;
+        }
+    }
+
+    bool m_unorc_inited;
+    bool m_unorc_modified;
+    bool bSwitchedRdbFiles;
+
+    typedef std::unordered_map< OUString, Reference<XInterface> > t_string2object;
+    t_string2object m_backendObjects;
+
+    // PackageRegistryBackend
+    virtual Reference<deployment::XPackage> bindPackage_(
+        OUString const & url, OUString const & mediaType,
+        bool bRemoved, OUString const & identifier,
+        Reference<XCommandEnvironment> const & xCmdEnv ) override;
+
+    virtual void SAL_CALL disposing() override;
+
+    const Reference<deployment::XPackageTypeInfo> m_xDynComponentTypeInfo;
+    const Reference<deployment::XPackageTypeInfo> m_xJavaComponentTypeInfo;
+    const Reference<deployment::XPackageTypeInfo> m_xPythonComponentTypeInfo;
+    const Reference<deployment::XPackageTypeInfo> m_xComponentsTypeInfo;
+    const Reference<deployment::XPackageTypeInfo> m_xRDBTypelibTypeInfo;
+    const Reference<deployment::XPackageTypeInfo> m_xJavaTypelibTypeInfo;
+    Sequence< Reference<deployment::XPackageTypeInfo> > m_typeInfos;
+
+    OUString m_commonRDB;
+    OUString m_nativeRDB;
+
+    //URLs of the original rdbs (before any switching):
+    OUString m_commonRDB_orig;
+    OUString m_nativeRDB_orig;
+
+    std::unique_ptr<ComponentBackendDb> m_backendDb;
+
+    void addDataToDb(OUString const & url, ComponentBackendDb::Data const & data);
+    ComponentBackendDb::Data readDataFromDb(std::u16string_view url);
+    void revokeEntryFromDb(std::u16string_view url);
+
+    Reference<registry::XSimpleRegistry> m_xCommonRDB;
+    Reference<registry::XSimpleRegistry> m_xNativeRDB;
+
+    void unorc_verify_init( Reference<XCommandEnvironment> const & xCmdEnv );
+    void unorc_flush( Reference<XCommandEnvironment> const & xCmdEnv );
+
+    Reference<XInterface> getObject( OUString const & id );
+    Reference<XInterface> insertObject(
+        OUString const & id, Reference<XInterface> const & xObject );
+    void releaseObject( OUString const & id );
+
+    void addToUnoRc( RcItem kind, OUString const & url,
+                     Reference<XCommandEnvironment> const & xCmdEnv );
+    void removeFromUnoRc( RcItem kind, OUString const & url,
+                          Reference<XCommandEnvironment> const & xCmdEnv );
+    bool hasInUnoRc( RcItem kind, OUString const & url );
+
+    css::uno::Reference< css::uno::XComponentContext > getRootContext() const;
+
+public:
+    BackendImpl( Sequence<Any> const & args,
+                 Reference<XComponentContext> const & xComponentContext );
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString& ServiceName ) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // XPackageRegistry
+    virtual Sequence< Reference<deployment::XPackageTypeInfo> > SAL_CALL
+    getSupportedPackageTypes() override;
+
+    virtual void SAL_CALL packageRemoved(OUString const & url, OUString const & mediaType) override;
+
+    using PackageRegistryBackend::disposing;
+
+    //Will be called from ComponentPackageImpl
+    void initServiceRdbFiles();
+};
+
+
+BackendImpl::ComponentPackageImpl::ComponentPackageImpl(
+    ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+    OUString const & url, OUString const & name,
+    Reference<deployment::XPackageTypeInfo> const & xPackageType,
+    OUString loader, bool bRemoved,
+    OUString const & identifier)
+    : Package( myBackend, url, name, name /* display-name */,
+               xPackageType, bRemoved, identifier),
+      m_loader(std::move( loader )),
+      m_registered( Reg::Uninit )
+{}
+
+Reference<registry::XSimpleRegistry>
+BackendImpl::ComponentPackageImpl::getRDB() const
+{
+    BackendImpl * that = getMyBackend();
+
+    //Late "initialization" of the services rdb files
+    //This is to prevent problems when running several
+    //instances of OOo with root rights in parallel. This
+    //would otherwise cause problems when copying the rdbs.
+    //See  http://qa.openoffice.org/issues/show_bug.cgi?id=99257
+    {
+        const ::osl::MutexGuard guard( m_aMutex );
+        if (!that->bSwitchedRdbFiles)
+        {
+            that->bSwitchedRdbFiles = true;
+            that->initServiceRdbFiles();
+        }
+    }
+    if ( m_loader == "com.sun.star.loader.SharedLibrary" )
+        return that->m_xNativeRDB;
+    else
+        return that->m_xCommonRDB;
+}
+
+BackendImpl * BackendImpl::ComponentPackageImpl::getMyBackend() const
+{
+    BackendImpl * pBackend = static_cast<BackendImpl *>(m_myBackend.get());
+    if (nullptr == pBackend)
+    {
+        //Throws a DisposedException
+        check();
+        //We should never get here...
+        throw RuntimeException(
+            "Failed to get the BackendImpl",
+            static_cast<OWeakObject*>(const_cast<ComponentPackageImpl *>(this)));
+    }
+    return pBackend;
+}
+
+
+void BackendImpl::disposing()
+{
+    try {
+        m_backendObjects = t_string2object();
+        if (m_xNativeRDB.is()) {
+            m_xNativeRDB->close();
+            m_xNativeRDB.clear();
+        }
+        if (m_xCommonRDB.is()) {
+            m_xCommonRDB->close();
+            m_xCommonRDB.clear();
+        }
+        unorc_flush( Reference<XCommandEnvironment>() );
+
+        PackageRegistryBackend::disposing();
+    }
+    catch (const RuntimeException &) {
+        throw;
+    }
+    catch (const Exception &) {
+        Any exc( ::cppu::getCaughtException() );
+        throw lang::WrappedTargetRuntimeException(
+            "caught unexpected exception while disposing...",
+            static_cast<OWeakObject *>(this), exc );
+    }
+}
+
+
+void BackendImpl::initServiceRdbFiles()
+{
+    const Reference<XCommandEnvironment> xCmdEnv;
+
+    ::ucbhelper::Content cacheDir( getCachePath(), xCmdEnv, m_xComponentContext );
+    ::ucbhelper::Content oldRDB;
+    // switch common rdb:
+    if (!m_commonRDB_orig.isEmpty())
+    {
+        (void)create_ucb_content(
+            &oldRDB, makeURL( getCachePath(), m_commonRDB_orig),
+            xCmdEnv, false /* no throw */ );
+    }
+    m_commonRDB = m_commonRDB_orig == "common.rdb" ? std::u16string_view(u"common_.rdb") : std::u16string_view(u"common.rdb");
+    if (oldRDB.get().is())
+    {
+        cacheDir.transferContent(
+                oldRDB, ::ucbhelper::InsertOperation::Copy,
+                m_commonRDB, NameClash::OVERWRITE );
+        oldRDB = ::ucbhelper::Content();
+    }
+    // switch native rdb:
+    if (!m_nativeRDB_orig.isEmpty())
+    {
+        (void)create_ucb_content(
+            &oldRDB, makeURL(getCachePath(), m_nativeRDB_orig),
+            xCmdEnv, false /* no throw */ );
+    }
+    const OUString plt_rdb( getPlatformString() + ".rdb" );
+    const OUString plt_rdb_( getPlatformString() + "_.rdb" );
+    m_nativeRDB = (m_nativeRDB_orig == plt_rdb ) ? plt_rdb_ : plt_rdb;
+    if (oldRDB.get().is())
+    {
+        cacheDir.transferContent(
+                oldRDB, ::ucbhelper::InsertOperation::Copy,
+                m_nativeRDB, NameClash::OVERWRITE );
+    }
+
+    // UNO is bootstrapped, flush for next process start:
+    m_unorc_modified = true;
+    unorc_flush( Reference<XCommandEnvironment>() );
+
+
+    // common rdb for java, native rdb for shared lib components
+    if (!m_commonRDB.isEmpty()) {
+        m_xCommonRDB.set(
+            m_xComponentContext->getServiceManager()
+            ->createInstanceWithContext(
+            "com.sun.star.registry.SimpleRegistry",
+            m_xComponentContext ), UNO_QUERY_THROW );
+        m_xCommonRDB->open(
+            makeURL( expandUnoRcUrl(getCachePath()), m_commonRDB ),
+            false, true);
+    }
+    if (!m_nativeRDB.isEmpty()) {
+        m_xNativeRDB.set(
+            m_xComponentContext->getServiceManager()
+            ->createInstanceWithContext(
+            "com.sun.star.registry.SimpleRegistry",
+            m_xComponentContext ), UNO_QUERY_THROW );
+        m_xNativeRDB->open(
+            makeURL( expandUnoRcUrl(getCachePath()), m_nativeRDB ),
+            false, true);
+    }
+}
+
+BackendImpl::BackendImpl(
+    Sequence<Any> const & args,
+    Reference<XComponentContext> const & xComponentContext )
+    : PackageRegistryBackend( args, xComponentContext ),
+      m_unorc_inited( false ),
+      m_unorc_modified( false ),
+      bSwitchedRdbFiles(false),
+      m_xDynComponentTypeInfo( new Package::TypeInfo(
+             "application/vnd.sun.star.uno-component;type=native;platform=" +
+                                   getPlatformString(),
+                                   "*" SAL_DLLEXTENSION,
+                                   DpResId(RID_STR_DYN_COMPONENT)
+                                   ) ),
+      m_xJavaComponentTypeInfo( new Package::TypeInfo(
+             "application/vnd.sun.star.uno-component;type=Java",
+                                    "*.jar",
+                                    DpResId(RID_STR_JAVA_COMPONENT)
+                                    ) ),
+      m_xPythonComponentTypeInfo( new Package::TypeInfo(
+             "application/vnd.sun.star.uno-component;type=Python",
+                                      "*.py",
+                                      DpResId(
+                                          RID_STR_PYTHON_COMPONENT)
+                                      ) ),
+      m_xComponentsTypeInfo( new Package::TypeInfo(
+                                 "application/vnd.sun.star.uno-components",
+                                 "*.components",
+                                 DpResId(RID_STR_COMPONENTS)
+                                 ) ),
+      m_xRDBTypelibTypeInfo( new Package::TypeInfo(
+             "application/vnd.sun.star.uno-typelibrary;type=RDB",
+                                 "*.rdb",
+                                 DpResId(RID_STR_RDB_TYPELIB)
+                                 ) ),
+      m_xJavaTypelibTypeInfo( new Package::TypeInfo(
+             "application/vnd.sun.star.uno-typelibrary;type=Java",
+                                  "*.jar",
+                                  DpResId(RID_STR_JAVA_TYPELIB)
+                                  ) ),
+      m_typeInfos{ m_xDynComponentTypeInfo, m_xJavaComponentTypeInfo, m_xPythonComponentTypeInfo,
+                   m_xComponentsTypeInfo, m_xRDBTypelibTypeInfo, m_xJavaTypelibTypeInfo }
+{
+    const Reference<XCommandEnvironment> xCmdEnv;
+
+    if (transientMode())
+    {
+        // in-mem rdbs:
+        // common rdb for java, native rdb for shared lib components
+        m_xCommonRDB.set(
+            xComponentContext->getServiceManager()->createInstanceWithContext(
+                "com.sun.star.registry.SimpleRegistry",
+                xComponentContext ), UNO_QUERY_THROW );
+        m_xCommonRDB->open( OUString() /* in-mem */,
+                            false /* ! read-only */, true /* create */ );
+        m_xNativeRDB.set(
+            xComponentContext->getServiceManager()->createInstanceWithContext(
+                "com.sun.star.registry.SimpleRegistry",
+                xComponentContext ), UNO_QUERY_THROW );
+        m_xNativeRDB->open( OUString() /* in-mem */,
+                            false /* ! read-only */, true /* create */ );
+    }
+    else
+    {
+        unorc_verify_init( xCmdEnv );
+        OUString dbFile = makeURL(getCachePath(), "backenddb.xml");
+        m_backendDb.reset(
+            new ComponentBackendDb(getComponentContext(), dbFile));
+    }
+}
+
+// XServiceInfo
+OUString BackendImpl::getImplementationName()
+{
+    return "com.sun.star.comp.deployment.component.PackageRegistryBackend";
+}
+
+sal_Bool BackendImpl::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+css::uno::Sequence< OUString > BackendImpl::getSupportedServiceNames()
+{
+    return { BACKEND_SERVICE_NAME };
+}
+
+void BackendImpl::addDataToDb(
+    OUString const & url, ComponentBackendDb::Data const & data)
+{
+    if (m_backendDb)
+        m_backendDb->addEntry(url, data);
+}
+
+ComponentBackendDb::Data BackendImpl::readDataFromDb(std::u16string_view url)
+{
+    ComponentBackendDb::Data data;
+    if (m_backendDb)
+        data = m_backendDb->getEntry(url);
+    return data;
+}
+
+void BackendImpl::revokeEntryFromDb(std::u16string_view url)
+{
+    if (m_backendDb)
+        m_backendDb->revokeEntry(url);
+}
+
+// XPackageRegistry
+
+Sequence< Reference<deployment::XPackageTypeInfo> >
+BackendImpl::getSupportedPackageTypes()
+{
+    return m_typeInfos;
+}
+
+void BackendImpl::packageRemoved(OUString const & url, OUString const & /*mediaType*/)
+{
+    if (m_backendDb)
+        m_backendDb->removeEntry(url);
+}
+
+// PackageRegistryBackend
+
+Reference<deployment::XPackage> BackendImpl::bindPackage_(
+    OUString const & url, OUString const & mediaType_,
+    bool bRemoved, OUString const & identifier,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    OUString mediaType(mediaType_);
+    if ( mediaType.isEmpty() || mediaType == "application/vnd.sun.star.uno-component" || mediaType == "application/vnd.sun.star.uno-typelibrary" )
+    {
+        // detect exact media-type:
+        ::ucbhelper::Content ucbContent;
+        if (create_ucb_content( &ucbContent, url, xCmdEnv )) {
+            const OUString title( StrTitle::getTitle( ucbContent ) );
+            if (title.endsWithIgnoreAsciiCase(SAL_DLLEXTENSION))
+            {
+                mediaType = "application/vnd.sun.star.uno-component;type=native;platform=" +
+                    getPlatformString();
+            }
+            else if (title.endsWithIgnoreAsciiCase(".jar"))
+            {
+                if (jarManifestHeaderPresent(
+                        url, "RegistrationClassName", xCmdEnv ))
+                    mediaType = "application/vnd.sun.star.uno-component;type=Java";
+                if (mediaType.isEmpty())
+                    mediaType = "application/vnd.sun.star.uno-typelibrary;type=Java";
+            }
+            else if (title.endsWithIgnoreAsciiCase(".py"))
+                mediaType = "application/vnd.sun.star.uno-component;type=Python";
+            else if (title.endsWithIgnoreAsciiCase(".rdb"))
+                mediaType = "application/vnd.sun.star.uno-typelibrary;type=RDB";
+        }
+        if (mediaType.isEmpty())
+            throw lang::IllegalArgumentException(
+                StrCannotDetectMediaType() + url,
+                static_cast<OWeakObject *>(this), static_cast<sal_Int16>(-1) );
+    }
+
+    OUString type, subType;
+    INetContentTypeParameterList params;
+    if (INetContentTypes::parse( mediaType, type, subType, &params ))
+    {
+        if (type.equalsIgnoreAsciiCase("application"))
+        {
+            OUString name;
+            if (!bRemoved)
+            {
+                ::ucbhelper::Content ucbContent( url, xCmdEnv, m_xComponentContext );
+                name = StrTitle::getTitle( ucbContent );
+            }
+
+            if (subType.equalsIgnoreAsciiCase("vnd.sun.star.uno-component"))
+            {
+                // xxx todo: probe and evaluate component xml description
+
+                auto const iter = params.find(OString("platform"));
+                bool bPlatformFits(iter == params.end());
+                OUString aPlatform;
+                if (!bPlatformFits) // platform is specified, we have to check
+                {
+                    aPlatform = iter->second.m_sValue;
+                    bPlatformFits = platform_fits(aPlatform);
+                }
+                // If the package is being removed, do not care whether
+                // platform fits. We won't be using it anyway.
+                if (bPlatformFits || bRemoved) {
+                    auto const iterType = params.find(OString("type"));
+                    if (iterType != params.end())
+                    {
+                        OUString const & value = iterType->second.m_sValue;
+                        if (value.equalsIgnoreAsciiCase("native")) {
+                            if (bPlatformFits)
+                                return new BackendImpl::ComponentPackageImpl(
+                                    this, url, name, m_xDynComponentTypeInfo,
+                                    "com.sun.star.loader.SharedLibrary",
+                                    bRemoved, identifier);
+                            else
+                                return new BackendImpl::OtherPlatformPackageImpl(
+                                    this, url, name, m_xDynComponentTypeInfo,
+                                    bRemoved, identifier, aPlatform);
+                        }
+                        if (value.equalsIgnoreAsciiCase("Java")) {
+                            return new BackendImpl::ComponentPackageImpl(
+                                this, url, name, m_xJavaComponentTypeInfo,
+                                "com.sun.star.loader.Java2",
+                                bRemoved, identifier);
+                        }
+                        if (value.equalsIgnoreAsciiCase("Python")) {
+                            return new BackendImpl::ComponentPackageImpl(
+                                this, url, name, m_xPythonComponentTypeInfo,
+                                "com.sun.star.loader.Python",
+                                bRemoved, identifier);
+                        }
+                    }
+                }
+            }
+            else if (subType.equalsIgnoreAsciiCase("vnd.sun.star.uno-components"))
+            {
+                auto const iter = params.find(OString("platform"));
+                if (iter == params.end() || platform_fits(iter->second.m_sValue)) {
+                    return new BackendImpl::ComponentsPackageImpl(
+                        this, url, name, m_xComponentsTypeInfo, bRemoved,
+                        identifier);
+                }
+            }
+            else if (subType.equalsIgnoreAsciiCase( "vnd.sun.star.uno-typelibrary"))
+            {
+                auto const iter = params.find(OString("type"));
+                if (iter != params.end()) {
+                    OUString const & value = iter->second.m_sValue;
+                    if (value.equalsIgnoreAsciiCase("RDB"))
+                    {
+                        return new BackendImpl::TypelibraryPackageImpl(
+                            this, url, name, m_xRDBTypelibTypeInfo,
+                            false /* rdb */, bRemoved, identifier);
+                    }
+                    if (value.equalsIgnoreAsciiCase("Java")) {
+                        return new BackendImpl::TypelibraryPackageImpl(
+                            this, url, name, m_xJavaTypelibTypeInfo,
+                            true /* jar */, bRemoved, identifier);
+                    }
+                }
+            }
+        }
+    }
+    throw lang::IllegalArgumentException(
+        StrUnsupportedMediaType() + mediaType,
+        static_cast<OWeakObject *>(this),
+        static_cast<sal_Int16>(-1) );
+}
+
+
+void BackendImpl::unorc_verify_init(
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    if (transientMode())
+        return;
+    const ::osl::MutexGuard guard( m_aMutex );
+    if ( m_unorc_inited)
+        return;
+
+    // common rc:
+    ::ucbhelper::Content ucb_content;
+    if (create_ucb_content(
+            &ucb_content,
+            makeURL( getCachePath(), "unorc" ),
+            xCmdEnv, false /* no throw */ ))
+    {
+        OUString line;
+        if (readLine( &line, "UNO_JAVA_CLASSPATH=", ucb_content,
+                      RTL_TEXTENCODING_UTF8 ))
+        {
+            sal_Int32 index = sizeof ("UNO_JAVA_CLASSPATH=") - 1;
+            do {
+                OUString token( o3tl::trim(o3tl::getToken(line, 0, ' ', index )) );
+                if (!token.isEmpty())
+                {
+                    if (create_ucb_content(
+                            nullptr, expandUnoRcTerm(token), xCmdEnv,
+                            false /* no throw */ ))
+                    {
+                        //The jar file may not exist anymore if a shared or bundled
+                        //extension was removed, but it can still be in the unorc
+                        //After running XExtensionManager::synchronize, the unorc is
+                        //cleaned up
+                        m_jar_typelibs.push_back( token );
+                    }
+                }
+            }
+            while (index >= 0);
+        }
+        if (readLine( &line, "UNO_TYPES=", ucb_content,
+                      RTL_TEXTENCODING_UTF8 )) {
+            sal_Int32 index = sizeof ("UNO_TYPES=") - 1;
+            do {
+                OUString token( o3tl::trim(o3tl::getToken(line, 0, ' ', index )) );
+                if (!token.isEmpty())
+                {
+                    if (token[ 0 ] == '?')
+                        token = token.copy( 1 );
+                    if (create_ucb_content(
+                            nullptr, expandUnoRcTerm(token), xCmdEnv,
+                            false /* no throw */ ))
+                    {
+                         //The RDB file may not exist anymore if a shared or bundled
+                         //extension was removed, but it can still be in the unorc.
+                         //After running XExtensionManager::synchronize, the unorc is
+                         //cleaned up
+                         m_rdb_typelibs.push_back( token );
+                    }
+                }
+            }
+            while (index >= 0);
+        }
+        if (readLine( &line, "UNO_SERVICES=", ucb_content,
+                      RTL_TEXTENCODING_UTF8 ))
+        {
+            // The UNO_SERVICES line always has the BNF form
+            //  "UNO_SERVICES="
+            //  ("?$ORIGIN/" <common-rdb>)?                        -- first
+            //  "${$ORIGIN/${_OS}_${_ARCH}rc:UNO_SERVICES}"?       -- second
+            //  ("?" ("BUNDLED_EXTENSIONS" |                       -- third
+            //   "UNO_SHARED_PACKAGES_CACHE" | "UNO_USER_PACKAGES_CACHE")
+            //   ...)*
+            // so can unambiguously be split into its three parts:
+            int state = 1;
+            for (sal_Int32 i = RTL_CONSTASCII_LENGTH("UNO_SERVICES=");
+                 i >= 0;)
+            {
+                OUString token(line.getToken(0, ' ', i));
+                if (!token.isEmpty())
+                {
+                    if (state == 1 && token.match("?$ORIGIN/"))
+                    {
+                        m_commonRDB_orig = token.copy(
+                            RTL_CONSTASCII_LENGTH("?$ORIGIN/"));
+                        state = 2;
+                    }
+                    else if ( state <= 2 && token == "${$ORIGIN/${_OS}_${_ARCH}rc:UNO_SERVICES}" )
+                    {
+                        state = 3;
+                    }
+                    else
+                    {
+                        if (token[0] == '?')
+                        {
+                            token = token.copy(1);
+                        }
+                        m_components.push_back(token);
+                        state = 3;
+                    }
+                }
+            }
+        }
+
+        // native rc:
+        if (create_ucb_content(
+                &ucb_content,
+                makeURL( getCachePath(), getPlatformString() + "rc"),
+                xCmdEnv, false /* no throw */ )) {
+            if (readLine( &line, "UNO_SERVICES=", ucb_content,
+                          RTL_TEXTENCODING_UTF8 )) {
+                m_nativeRDB_orig = line.copy(
+                    sizeof ("UNO_SERVICES=?$ORIGIN/") - 1 );
+            }
+        }
+    }
+    m_unorc_modified = false;
+    m_unorc_inited = true;
+}
+
+
+void BackendImpl::unorc_flush( Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    if (transientMode())
+        return;
+    if (!m_unorc_inited || !m_unorc_modified)
+        return;
+
+    OStringBuffer buf;
+
+    buf.append("ORIGIN=");
+    OUString sOrigin = dp_misc::makeRcTerm(m_cachePath);
+    OString osOrigin = OUStringToOString(sOrigin, RTL_TEXTENCODING_UTF8);
+    buf.append(osOrigin);
+    buf.append(LF);
+
+    if (! m_jar_typelibs.empty())
+    {
+        auto iPos( m_jar_typelibs.cbegin() );
+        auto const iEnd( m_jar_typelibs.cend() );
+        buf.append( "UNO_JAVA_CLASSPATH=" );
+        while (iPos != iEnd) {
+            // encoded ASCII file-urls:
+            const OString item(
+                OUStringToOString( *iPos, RTL_TEXTENCODING_ASCII_US ) );
+            buf.append( item );
+            ++iPos;
+            if (iPos != iEnd)
+                buf.append( ' ' );
+        }
+        buf.append(LF);
+    }
+    if (! m_rdb_typelibs.empty())
+    {
+        auto iPos( m_rdb_typelibs.cbegin() );
+        auto const iEnd( m_rdb_typelibs.cend() );
+        buf.append( "UNO_TYPES=" );
+        while (iPos != iEnd) {
+            buf.append( '?' );
+            // encoded ASCII file-urls:
+            const OString item(
+                OUStringToOString( *iPos, RTL_TEXTENCODING_ASCII_US ) );
+            buf.append( item );
+            ++iPos;
+            if (iPos != iEnd)
+                buf.append( ' ' );
+        }
+        buf.append(LF);
+    }
+
+    // If we duplicated the common or native rdb then we must use those urls
+    //otherwise we use those of the original files. That is, m_commonRDB_orig
+    //and m_nativeRDB_orig;
+    OUString sCommonRDB(m_commonRDB.isEmpty() ? m_commonRDB_orig : m_commonRDB );
+    OUString sNativeRDB(m_nativeRDB.isEmpty() ? m_nativeRDB_orig : m_nativeRDB );
+
+    if (!sCommonRDB.isEmpty() || !sNativeRDB.isEmpty() ||
+        !m_components.empty())
+    {
+        buf.append( "UNO_SERVICES=" );
+        bool space = false;
+        if (!sCommonRDB.isEmpty())
+        {
+            buf.append( "?$ORIGIN/" );
+            buf.append( OUStringToOString(
+                            sCommonRDB, RTL_TEXTENCODING_ASCII_US ) );
+            space = true;
+        }
+        if (!sNativeRDB.isEmpty())
+        {
+            if (space)
+            {
+                buf.append(' ');
+            }
+            buf.append( "${$ORIGIN/${_OS}_${_ARCH}rc:UNO_SERVICES}" );
+            space = true;
+
+            // write native rc:
+            OString buf2 =
+                "ORIGIN=" +
+                osOrigin +
+                OStringChar(LF) +
+                "UNO_SERVICES=?$ORIGIN/"  +
+                OUStringToOString( sNativeRDB, RTL_TEXTENCODING_ASCII_US ) +
+                OStringChar(LF);
+
+            const Reference<io::XInputStream> xData(
+                ::xmlscript::createInputStream(
+                        reinterpret_cast<sal_Int8 const *>(buf2.getStr()),
+                        buf2.getLength() ) );
+            ::ucbhelper::Content ucb_content(
+                makeURL( getCachePath(), getPlatformString() + "rc" ),
+                xCmdEnv, m_xComponentContext );
+            ucb_content.writeStream( xData, true /* replace existing */ );
+        }
+        for (auto const& component : m_components)
+        {
+            if (space)
+            {
+                buf.append(' ');
+            }
+            buf.append('?');
+            buf.append(OUStringToOString(component, RTL_TEXTENCODING_UTF8));
+            space = true;
+        }
+        buf.append(LF);
+    }
+
+    // write unorc:
+    const Reference<io::XInputStream> xData(
+        ::xmlscript::createInputStream(
+                reinterpret_cast<sal_Int8 const *>(buf.getStr()),
+                buf.getLength() ) );
+    ::ucbhelper::Content ucb_content(
+        makeURL( getCachePath(), "unorc" ), xCmdEnv, m_xComponentContext );
+    ucb_content.writeStream( xData, true /* replace existing */ );
+
+    m_unorc_modified = false;
+}
+
+
+void BackendImpl::addToUnoRc( RcItem kind, OUString const & url_,
+                              Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    const OUString rcterm( dp_misc::makeRcTerm(url_) );
+    const ::osl::MutexGuard guard( m_aMutex );
+    unorc_verify_init( xCmdEnv );
+    std::deque<OUString> & rSet = getRcItemList(kind);
+    if (std::find( rSet.begin(), rSet.end(), rcterm ) == rSet.end()) {
+        rSet.push_front( rcterm ); // prepend to list, thus overriding
+        // write immediately:
+        m_unorc_modified = true;
+        unorc_flush( xCmdEnv );
+    }
+}
+
+
+void BackendImpl::removeFromUnoRc(
+    RcItem kind, OUString const & url_,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    const OUString rcterm( dp_misc::makeRcTerm(url_) );
+    const ::osl::MutexGuard guard( m_aMutex );
+    unorc_verify_init( xCmdEnv );
+    std::deque<OUString> & aRcItemList = getRcItemList(kind);
+    aRcItemList.erase(std::remove(aRcItemList.begin(), aRcItemList.end(), rcterm), aRcItemList.end());
+    // write immediately:
+    m_unorc_modified = true;
+    unorc_flush( xCmdEnv );
+}
+
+
+bool BackendImpl::hasInUnoRc(
+    RcItem kind, OUString const & url_ )
+{
+    const OUString rcterm( dp_misc::makeRcTerm(url_) );
+    const ::osl::MutexGuard guard( m_aMutex );
+    std::deque<OUString> const & rSet = getRcItemList(kind);
+    return std::find( rSet.begin(), rSet.end(), rcterm ) != rSet.end();
+}
+
+css::uno::Reference< css::uno::XComponentContext > BackendImpl::getRootContext()
+    const
+{
+    css::uno::Reference< css::uno::XComponentContext > rootContext(
+        getComponentContext()->getValueByName("_root"),
+        css::uno::UNO_QUERY);
+    return rootContext.is() ? rootContext : getComponentContext();
+}
+
+
+void BackendImpl::releaseObject( OUString const & id )
+{
+    const ::osl::MutexGuard guard( m_aMutex );
+    m_backendObjects.erase( id );
+}
+
+
+Reference<XInterface> BackendImpl::getObject( OUString const & id )
+{
+    const ::osl::MutexGuard guard( m_aMutex );
+    const t_string2object::const_iterator iFind( m_backendObjects.find( id ) );
+    if (iFind == m_backendObjects.end())
+        return Reference<XInterface>();
+    else
+        return iFind->second;
+}
+
+
+Reference<XInterface> BackendImpl::insertObject(
+    OUString const & id, Reference<XInterface> const & xObject )
+{
+    const ::osl::MutexGuard guard( m_aMutex );
+    const std::pair<t_string2object::iterator, bool> insertion(
+        m_backendObjects.emplace( id, xObject ) );
+    return insertion.first->second;
+}
+
+
+Reference<XComponentContext> raise_uno_process(
+    Reference<XComponentContext> const & xContext,
+    ::rtl::Reference<AbortChannel> const & abortChannel )
+{
+    OSL_ASSERT( xContext.is() );
+
+    OUString url( util::theMacroExpander::get(xContext)->expandMacros( "$URE_BIN_DIR/uno" ) );
+
+    const OUString connectStr = "uno:pipe,name=" + generateRandomPipeId() + ";urp;uno.ComponentContext";
+
+    // raise core UNO process to register/run a component,
+    // javavm service uses unorc next to executable to retrieve deployed
+    // jar typelibs
+
+    std::vector<OUString> args{
+#if OSL_DEBUG_LEVEL == 0
+        "--quiet",
+#endif
+        "--singleaccept",
+        "-u",
+        connectStr,
+        // don't inherit from unorc:
+        "-env:INIFILENAME=" };
+
+    //now add the bootstrap variables which were supplied on the command line
+    std::vector<OUString> bootvars = getCmdBootstrapVariables();
+    args.insert(args.end(), bootvars.begin(), bootvars.end());
+
+    oslProcess hProcess;
+    try {
+        hProcess = raiseProcess(
+            url, comphelper::containerToSequence(args) );
+    }
+    catch (...) {
+        OUStringBuffer sMsg = "error starting process: " + url;
+        for(const auto& arg : args)
+            sMsg.append(" " + arg);
+        throw uno::RuntimeException(sMsg.makeStringAndClear());
+    }
+    try {
+        return Reference<XComponentContext>(
+            resolveUnoURL( connectStr, xContext, abortChannel.get() ),
+            UNO_QUERY_THROW );
+    }
+    catch (...) {
+        // try to terminate process:
+        if ( osl_terminateProcess( hProcess ) != osl_Process_E_None )
+        {
+            OSL_ASSERT( false );
+        }
+        throw;
+    }
+}
+
+void extractComponentData(
+    css::uno::Reference< css::uno::XComponentContext > const & context,
+    css::uno::Reference< css::registry::XRegistryKey > const & registry,
+    ComponentBackendDb::Data * data,
+    std::vector< css::uno::Reference< css::uno::XInterface > > * factories,
+    css::uno::Reference< css::loader::XImplementationLoader > const &
+        componentLoader,
+    OUString const & componentUrl)
+{
+    OSL_ASSERT(
+        context.is() && registry.is() && data != nullptr && componentLoader.is());
+    OUString registryName(registry->getKeyName());
+    sal_Int32 prefix = registryName.getLength();
+    if (!registryName.endsWith("/")) {
+        prefix += RTL_CONSTASCII_LENGTH("/");
+    }
+    const css::uno::Sequence< css::uno::Reference< css::registry::XRegistryKey > >
+        keys(registry->openKeys());
+    css::uno::Reference< css::lang::XMultiComponentFactory > smgr(
+        context->getServiceManager(), css::uno::UNO_SET_THROW);
+    for (css::uno::Reference< css::registry::XRegistryKey > const & key : keys) {
+        OUString name(key->getKeyName().copy(prefix));
+        data->implementationNames.push_back(name);
+        css::uno::Reference< css::registry::XRegistryKey > singletons(
+            key->openKey("UNO/SINGLETONS"));
+        if (singletons.is()) {
+            sal_Int32 prefix2 = key->getKeyName().getLength() +
+                RTL_CONSTASCII_LENGTH("/UNO/SINGLETONS/");
+            const css::uno::Sequence<
+                css::uno::Reference< css::registry::XRegistryKey > >
+                singletonKeys(singletons->openKeys());
+            for (css::uno::Reference< css::registry::XRegistryKey > const & singletonKey : singletonKeys) {
+                data->singletons.emplace_back(
+                        singletonKey->getKeyName().copy(prefix2), name);
+            }
+        }
+        if (factories != nullptr) {
+            factories->push_back(
+                componentLoader->activate(
+                    name, OUString(), componentUrl, key));
+        }
+    }
+}
+
+void BackendImpl::ComponentPackageImpl::getComponentInfo(
+    ComponentBackendDb::Data * data,
+    std::vector< css::uno::Reference< css::uno::XInterface > > * factories,
+    Reference<XComponentContext> const & xContext )
+{
+    const Reference<loader::XImplementationLoader> xLoader(
+        xContext->getServiceManager()->createInstanceWithContext(
+            m_loader, xContext ), UNO_QUERY );
+    if (! xLoader.is())
+    {
+        throw css::deployment::DeploymentException(
+            "cannot instantiate loader " + m_loader,
+            static_cast< OWeakObject * >(this), Any());
+    }
+
+    // HACK: highly dependent on stoc/source/servicemanager
+    //       and stoc/source/implreg implementation which rely on the same
+    //       services.rdb format!
+    //       .../UNO/LOCATION and .../UNO/ACTIVATOR appear not to be written by
+    //       writeRegistryInfo, however, but are known, fixed values here, so
+    //       can be passed into extractComponentData
+    OUString url(getURL());
+    const Reference<registry::XSimpleRegistry> xMemReg(
+        xContext->getServiceManager()->createInstanceWithContext(
+            "com.sun.star.registry.SimpleRegistry", xContext ),
+        UNO_QUERY_THROW );
+    xMemReg->open( OUString() /* in mem */, false, true );
+    xLoader->writeRegistryInfo( xMemReg->getRootKey(), OUString(), url );
+    extractComponentData(
+        xContext, xMemReg->getRootKey(), data, factories, xLoader, url);
+}
+
+void BackendImpl::ComponentPackageImpl::componentLiveInsertion(
+    ComponentBackendDb::Data const & data,
+    std::vector< css::uno::Reference< css::uno::XInterface > > const &
+        factories)
+{
+    css::uno::Reference< css::uno::XComponentContext > rootContext(
+        getMyBackend()->getRootContext());
+    css::uno::Reference< css::container::XSet > set(
+        rootContext->getServiceManager(), css::uno::UNO_QUERY_THROW);
+    std::vector< css::uno::Reference< css::uno::XInterface > >::const_iterator
+        factory(factories.begin());
+    for (auto const& implementationName : data.implementationNames)
+    {
+        try {
+            set->insert(css::uno::Any(*factory++));
+        } catch (const container::ElementExistException &) {
+            SAL_WARN("desktop.deployment", "implementation already registered " << implementationName);
+        }
+    }
+    if (data.singletons.empty())        return;
+
+    css::uno::Reference< css::container::XNameContainer > cont(
+        rootContext, css::uno::UNO_QUERY_THROW);
+    for (auto const& singleton : data.singletons)
+    {
+        OUString name("/singletons/" + singleton.first);
+        //TODO: Update should be atomic:
+        try {
+            cont->removeByName( name + "/arguments");
+        } catch (const container::NoSuchElementException &) {}
+        try {
+            cont->insertByName( name + "/service", css::uno::Any(singleton.second));
+        } catch (const container::ElementExistException &) {
+            cont->replaceByName( name + "/service", css::uno::Any(singleton.second));
+        }
+        try {
+            cont->insertByName(name, css::uno::Any());
+        } catch (const container::ElementExistException &) {
+            SAL_WARN("desktop.deployment", "singleton already registered " << singleton.first);
+            cont->replaceByName(name, css::uno::Any());
+        }
+    }
+}
+
+void BackendImpl::ComponentPackageImpl::componentLiveRemoval(
+    ComponentBackendDb::Data const & data)
+{
+    css::uno::Reference< css::uno::XComponentContext > rootContext(
+        getMyBackend()->getRootContext());
+    css::uno::Reference< css::container::XSet > set(
+        rootContext->getServiceManager(), css::uno::UNO_QUERY_THROW);
+    for (auto const& implementationName : data.implementationNames)
+    {
+        try {
+            set->remove(css::uno::Any(implementationName));
+        } catch (const css::container::NoSuchElementException &) {
+            // ignore if factory has not been live deployed
+        }
+    }
+    if (data.singletons.empty())
+        return;
+
+    css::uno::Reference< css::container::XNameContainer > cont(
+        rootContext, css::uno::UNO_QUERY_THROW);
+    for (auto const& singleton : data.singletons)
+    {
+        OUString name("/singletons/" + singleton.first);
+        //TODO: Removal should be atomic:
+        try {
+            cont->removeByName(name);
+        } catch (const container::NoSuchElementException &) {}
+        try {
+            cont->removeByName( name + "/service" );
+        } catch (const container::NoSuchElementException &) {}
+        try {
+            cont->removeByName( name + "/arguments" );
+        } catch (const container::NoSuchElementException &) {}
+    }
+}
+
+// Package
+
+//We could use here BackendImpl::hasActiveEntry. However, this check is just as well.
+//And it also shows the problem if another extension has overwritten an implementation
+//entry, because it contains the same service implementation
+beans::Optional< beans::Ambiguous<sal_Bool> >
+BackendImpl::ComponentPackageImpl::isRegistered_(
+    ::osl::ResettableMutexGuard &,
+    ::rtl::Reference<AbortChannel> const & abortChannel,
+    Reference<XCommandEnvironment> const & )
+{
+    if (m_registered == Reg::Uninit)
+    {
+        m_registered = Reg::NotRegistered;
+        const Reference<registry::XSimpleRegistry> xRDB( getRDB() );
+        if (xRDB.is())
+        {
+            bool bAmbiguousComponentName = false;
+            // lookup rdb for location URL:
+            const Reference<registry::XRegistryKey> xRootKey(
+                xRDB->getRootKey() );
+            const Reference<registry::XRegistryKey> xImplKey(
+                xRootKey->openKey( "IMPLEMENTATIONS" ) );
+            Sequence<OUString> implNames;
+            if (xImplKey.is() && xImplKey->isValid())
+                implNames = xImplKey->getKeyNames();
+            OUString const * pImplNames = implNames.getConstArray();
+            sal_Int32 pos = implNames.getLength();
+            for ( ; pos--; )
+            {
+                checkAborted( abortChannel );
+                const OUString key(
+                    pImplNames[ pos ] + "/UNO/LOCATION" );
+                const Reference<registry::XRegistryKey> xKey(
+                    xRootKey->openKey(key) );
+                if (xKey.is() && xKey->isValid())
+                {
+                    const OUString location( xKey->getAsciiValue() );
+                    if (location.equalsIgnoreAsciiCase( getURL() ))
+                    {
+                        break;
+                    }
+                    else
+                    {
+                        //try to match only the file name
+                        OUString thisUrl(getURL());
+                        std::u16string_view thisFileName(thisUrl.subView(thisUrl.lastIndexOf('/')));
+
+                        std::u16string_view locationFileName(location.subView(location.lastIndexOf('/')));
+                        if (o3tl::equalsIgnoreAsciiCase(locationFileName, thisFileName))
+                            bAmbiguousComponentName = true;
+                    }
+                }
+            }
+            if (pos >= 0)
+                m_registered = Reg::Registered;
+            else if (bAmbiguousComponentName)
+                m_registered = Reg::MaybeRegistered;
+        }
+    }
+
+    //Different extensions can use the same service implementations. Then the extensions
+    //which was installed last will overwrite the one from the other extension. That is
+    //the registry will contain the path (the location) of the library or jar of the
+    //second extension. In this case isRegistered called for the lib of the first extension
+    //would return "not registered". That would mean that during uninstallation
+    //XPackage::registerPackage is not called, because it just was not registered. This is,
+    //however, necessary for jar files. Registering and unregistering update
+    //uno_packages/cache/registry/com.sun.star.comp.deployment.component.PackageRegistryBackend/unorc
+    //Therefore, we will return always "is ambiguous" if the path of this component cannot
+    //be found in the registry and if there is another path and both have the same file name (but
+    //the rest of the path is different).
+    //If the caller cannot precisely determine that this package was registered, then it must
+    //call registerPackage.
+    bool bAmbiguous = m_registered == Reg::Void // Reg::Void == we are in the progress of unregistration
+        || m_registered == Reg::MaybeRegistered;
+    return beans::Optional< beans::Ambiguous<sal_Bool> >(
+        true /* IsPresent */,
+        beans::Ambiguous<sal_Bool>(
+            m_registered == Reg::Registered, bAmbiguous) );
+}
+
+
+void BackendImpl::ComponentPackageImpl::processPackage_(
+    ::osl::ResettableMutexGuard &,
+    bool doRegisterPackage,
+    bool startup,
+    ::rtl::Reference<AbortChannel> const & abortChannel,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    BackendImpl * that = getMyBackend();
+    OUString url(getURL());
+    if (doRegisterPackage) {
+        ComponentBackendDb::Data data;
+        css::uno::Reference< css::uno::XComponentContext > context;
+        if (startup) {
+            context = that->getComponentContext();
+        } else {
+            context.set(that->getObject(url), css::uno::UNO_QUERY);
+            if (!context.is()) {
+                context.set(
+                    that->insertObject(
+                        url,
+                        raise_uno_process(
+                            that->getComponentContext(), abortChannel)),
+                    css::uno::UNO_QUERY_THROW);
+            }
+        }
+        css::uno::Reference< css::registry::XImplementationRegistration> impreg(
+            context->getServiceManager()->createInstanceWithContext(
+                "com.sun.star.registry.ImplementationRegistration",
+                context),
+            css::uno::UNO_QUERY_THROW);
+        css::uno::Reference< css::registry::XSimpleRegistry > rdb(getRDB());
+        impreg->registerImplementation(m_loader, url, rdb);
+        // Only write to unorc after successful registration; it may fail if
+        // there is no suitable java
+        if (m_loader == "com.sun.star.loader.Java2" && !jarManifestHeaderPresent(url, "UNO-Type-Path", xCmdEnv))
+        {
+            that->addToUnoRc(RCITEM_JAR_TYPELIB, url, xCmdEnv);
+            data.javaTypeLibrary = true;
+        }
+        std::vector< css::uno::Reference< css::uno::XInterface > > factories;
+        getComponentInfo(&data, startup ? nullptr : &factories, context);
+        if (!startup) {
+            try {
+                componentLiveInsertion(data, factories);
+            } catch (css::uno::Exception &) {
+                TOOLS_INFO_EXCEPTION("desktop.deployment", "caught");
+                try {
+                    impreg->revokeImplementation(url, rdb);
+                } catch (css::uno::RuntimeException &) {
+                    TOOLS_WARN_EXCEPTION("desktop.deployment", "ignored");
+                }
+                throw;
+            }
+        }
+        m_registered = Reg::Registered;
+        that->addDataToDb(url, data);
+    } else { // revoke
+        m_registered = Reg::Void;
+        ComponentBackendDb::Data data(that->readDataFromDb(url));
+        css::uno::Reference< css::uno::XComponentContext > context(
+            that->getObject(url), css::uno::UNO_QUERY);
+        bool remoteContext = context.is();
+        if (!remoteContext) {
+            context = that->getComponentContext();
+        }
+        if (!startup) {
+            componentLiveRemoval(data);
+        }
+        css::uno::Reference< css::registry::XImplementationRegistration >(
+            context->getServiceManager()->createInstanceWithContext(
+                "com.sun.star.registry.ImplementationRegistration",
+                context),
+            css::uno::UNO_QUERY_THROW)->revokeImplementation(url, getRDB());
+        if (data.javaTypeLibrary) {
+            that->removeFromUnoRc(RCITEM_JAR_TYPELIB, url, xCmdEnv);
+        }
+        if (remoteContext) {
+            that->releaseObject(url);
+        }
+        m_registered = Reg::NotRegistered;
+        getMyBackend()->revokeEntryFromDb(url);
+    }
+}
+
+BackendImpl::TypelibraryPackageImpl::TypelibraryPackageImpl(
+    ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+    OUString const & url, OUString const & name,
+    Reference<deployment::XPackageTypeInfo> const & xPackageType,
+    bool jarFile, bool bRemoved, OUString const & identifier)
+    : Package( myBackend, url, name, name /* display-name */,
+               xPackageType, bRemoved, identifier),
+      m_jarFile( jarFile )
+{
+}
+
+// Package
+BackendImpl * BackendImpl::TypelibraryPackageImpl::getMyBackend() const
+{
+    BackendImpl * pBackend = static_cast<BackendImpl *>(m_myBackend.get());
+    if (nullptr == pBackend)
+    {
+        //May throw a DisposedException
+        check();
+        //We should never get here...
+        throw RuntimeException( "Failed to get the BackendImpl",
+            static_cast<OWeakObject*>(const_cast<TypelibraryPackageImpl *>(this)));
+    }
+    return pBackend;
+}
+
+beans::Optional< beans::Ambiguous<sal_Bool> >
+BackendImpl::TypelibraryPackageImpl::isRegistered_(
+    ::osl::ResettableMutexGuard &,
+    ::rtl::Reference<AbortChannel> const &,
+    Reference<XCommandEnvironment> const & )
+{
+    BackendImpl * that = getMyBackend();
+    return beans::Optional< beans::Ambiguous<sal_Bool> >(
+        true /* IsPresent */,
+        beans::Ambiguous<sal_Bool>(
+            that->hasInUnoRc(
+                m_jarFile ? RCITEM_JAR_TYPELIB : RCITEM_RDB_TYPELIB, getURL() ),
+            false /* IsAmbiguous */ ) );
+}
+
+
+void BackendImpl::TypelibraryPackageImpl::processPackage_(
+    ::osl::ResettableMutexGuard &,
+    bool doRegisterPackage,
+    bool /*startup*/,
+    ::rtl::Reference<AbortChannel> const &,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    BackendImpl * that = getMyBackend();
+    const OUString url( getURL() );
+
+    if (doRegisterPackage)
+    {
+        // live insertion:
+        if (m_jarFile) {
+            // xxx todo add to classpath at runtime: ???
+            //SB: It is probably not worth it to add the live inserted type
+            // library JAR to the UnoClassLoader in the soffice process.  Any
+            // live inserted component JAR that might reference this type
+            // library JAR runs in its own uno process, so there is probably no
+            // Java code in the soffice process that would see any UNO types
+            // introduced by this type library JAR.
+        }
+        else // RDB:
+        {
+            css::uno::Reference< css::container::XSet >(
+                that->getComponentContext()->getValueByName(
+                    "/singletons"
+                    "/com.sun.star.reflection.theTypeDescriptionManager"),
+                css::uno::UNO_QUERY_THROW)->insert(
+                    css::uno::Any(expandUnoRcUrl(url)));
+        }
+
+        that->addToUnoRc( m_jarFile ? RCITEM_JAR_TYPELIB : RCITEM_RDB_TYPELIB,
+                          url, xCmdEnv );
+    }
+    else // revokePackage()
+    {
+        that->removeFromUnoRc(
+            m_jarFile ? RCITEM_JAR_TYPELIB : RCITEM_RDB_TYPELIB, url, xCmdEnv );
+
+        // revoking types at runtime, possible, sensible?
+        if (!m_jarFile) {
+            css::uno::Reference< css::container::XSet >(
+                that->getComponentContext()->getValueByName(
+                    "/singletons"
+                    "/com.sun.star.reflection.theTypeDescriptionManager"),
+                css::uno::UNO_QUERY_THROW)->remove(
+                    css::uno::Any(expandUnoRcUrl(url)));
+        }
+    }
+}
+
+BackendImpl::OtherPlatformPackageImpl::OtherPlatformPackageImpl(
+    ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+    OUString const & url, OUString const & name,
+    Reference<deployment::XPackageTypeInfo> const & xPackageType,
+    bool bRemoved, OUString const & identifier, OUString platform)
+    : Package(myBackend, url, name, name, xPackageType, bRemoved, identifier)
+    , m_aPlatform(std::move(platform))
+{
+    OSL_PRECOND(bRemoved, "this class can only be used for removing packages!");
+}
+
+BackendImpl *
+BackendImpl::OtherPlatformPackageImpl::getMyBackend() const
+{
+    BackendImpl * pBackend = static_cast<BackendImpl *>(m_myBackend.get());
+    if (nullptr == pBackend)
+    {
+        //Throws a DisposedException
+        check();
+        //We should never get here...
+        throw RuntimeException("Failed to get the BackendImpl",
+            static_cast<OWeakObject*>(const_cast<OtherPlatformPackageImpl*>(this)));
+    }
+    return pBackend;
+}
+
+Reference<registry::XSimpleRegistry>
+BackendImpl::OtherPlatformPackageImpl::impl_openRDB() const
+{
+    OUString const aRDB(m_aPlatform + ".rdb");
+    OUString const aRDBPath(makeURL(getMyBackend()->getCachePath(), aRDB));
+
+    Reference<registry::XSimpleRegistry> xRegistry;
+
+    try
+    {
+        xRegistry.set(
+                impl_createInstance("com.sun.star.registry.SimpleRegistry"),
+                UNO_QUERY)
+            ;
+        if (xRegistry.is())
+            xRegistry->open(expandUnoRcUrl(aRDBPath), false, false);
+    }
+    catch (registry::InvalidRegistryException const&)
+    {
+        // If the registry does not exist, we do not need to bother at all
+        xRegistry.set(nullptr);
+    }
+
+    SAL_WARN_IF( !xRegistry.is(), "desktop.deployment", "could not create registry for the package's platform");
+    return xRegistry;
+}
+
+Reference<XInterface>
+BackendImpl::OtherPlatformPackageImpl::impl_createInstance(OUString const& rService)
+const
+{
+    Reference<XComponentContext> const xContext(getMyBackend()->getComponentContext());
+    OSL_ASSERT(xContext.is());
+    Reference<XInterface> xService;
+    if (xContext.is())
+        xService.set(xContext->getServiceManager()->createInstanceWithContext(rService, xContext));
+    return xService;
+}
+
+beans::Optional<beans::Ambiguous<sal_Bool> >
+BackendImpl::OtherPlatformPackageImpl::isRegistered_(
+    ::osl::ResettableMutexGuard& /* guard */,
+    ::rtl::Reference<AbortChannel> const& /* abortChannel */,
+    Reference<XCommandEnvironment> const& /* xCmdEnv */ )
+{
+    return beans::Optional<beans::Ambiguous<sal_Bool> >(true,
+            beans::Ambiguous<sal_Bool>(true, false));
+}
+
+void
+BackendImpl::OtherPlatformPackageImpl::processPackage_(
+    ::osl::ResettableMutexGuard& /* guard */,
+    bool bRegisterPackage,
+    bool /* bStartup */,
+    ::rtl::Reference<AbortChannel> const& /* abortChannel */,
+    Reference<XCommandEnvironment> const& /* xCmdEnv */)
+{
+    OSL_PRECOND(!bRegisterPackage, "this class can only be used for removing packages!");
+
+    OUString const aURL(getURL());
+
+    Reference<registry::XSimpleRegistry> const xServicesRDB(impl_openRDB());
+    Reference<registry::XImplementationRegistration> const xImplReg(
+            impl_createInstance("com.sun.star.registry.ImplementationRegistration"),
+            UNO_QUERY)
+        ;
+    if (xImplReg.is() && xServicesRDB.is())
+        xImplReg->revokeImplementation(aURL, xServicesRDB);
+    if (xServicesRDB.is())
+        xServicesRDB->close();
+
+    getMyBackend()->revokeEntryFromDb(aURL);
+}
+
+BackendImpl * BackendImpl::ComponentsPackageImpl::getMyBackend() const
+{
+    BackendImpl * pBackend = static_cast<BackendImpl *>(m_myBackend.get());
+    if (nullptr == pBackend)
+    {
+        //Throws a DisposedException
+        check();
+        //We should never get here...
+        throw RuntimeException("Failed to get the BackendImpl",
+            static_cast<OWeakObject*>(const_cast<ComponentsPackageImpl *>(this)));
+    }
+    return pBackend;
+}
+
+beans::Optional< beans::Ambiguous<sal_Bool> >
+BackendImpl::ComponentsPackageImpl::isRegistered_(
+    ::osl::ResettableMutexGuard &,
+    ::rtl::Reference<AbortChannel> const &,
+    Reference<XCommandEnvironment> const & )
+{
+    return beans::Optional< beans::Ambiguous<sal_Bool> >(
+        true,
+        beans::Ambiguous<sal_Bool>(
+            getMyBackend()->hasInUnoRc(RCITEM_COMPONENTS, getURL()), false));
+}
+
+void BackendImpl::ComponentsPackageImpl::processPackage_(
+    ::osl::ResettableMutexGuard &,
+    bool doRegisterPackage,
+    bool startup,
+    ::rtl::Reference<AbortChannel> const & abortChannel,
+    Reference<XCommandEnvironment> const & xCmdEnv )
+{
+    BackendImpl * that = getMyBackend();
+    OUString url(getURL());
+    if (doRegisterPackage) {
+        if (!startup) {
+            css::uno::Reference< css::uno::XComponentContext > context(
+                that->getObject(url), css::uno::UNO_QUERY);
+            if (!context.is()) {
+                context.set(
+                    that->insertObject(
+                        url,
+                        raise_uno_process(
+                            that->getComponentContext(), abortChannel)),
+                    css::uno::UNO_QUERY_THROW);
+            }
+            // This relies on the root component context's service manager
+            // supporting the extended XSet semantics:
+            css::uno::Sequence< css::beans::NamedValue > args
+            {
+                { "uri", css::uno::Any(expandUnoRcUrl(url)) },
+                { "component-context", css::uno::Any(context) }
+            };
+            css::uno::Reference< css::container::XSet > smgr(
+                that->getRootContext()->getServiceManager(),
+                css::uno::UNO_QUERY_THROW);
+            smgr->insert(css::uno::Any(args));
+        }
+        that->addToUnoRc(RCITEM_COMPONENTS, url, xCmdEnv);
+    } else { // revoke
+        that->removeFromUnoRc(RCITEM_COMPONENTS, url, xCmdEnv);
+        if (!startup) {
+            // This relies on the root component context's service manager
+            // supporting the extended XSet semantics:
+            css::uno::Sequence< css::beans::NamedValue > args { { "uri", css::uno::Any(expandUnoRcUrl(url)) } };
+            css::uno::Reference< css::container::XSet > smgr(
+                that->getRootContext()->getServiceManager(),
+                css::uno::UNO_QUERY_THROW);
+            smgr->remove(css::uno::Any(args));
+        }
+        that->releaseObject(url);
+        that->revokeEntryFromDb(url); // in case it got added with old code
+    }
+}
+
+BackendImpl::ComponentsPackageImpl::ComponentsPackageImpl(
+    ::rtl::Reference<PackageRegistryBackend> const & myBackend,
+    OUString const & url, OUString const & name,
+    Reference<deployment::XPackageTypeInfo> const & xPackageType,
+    bool bRemoved, OUString const & identifier)
+    : Package( myBackend, url, name, name /* display-name */,
+               xPackageType, bRemoved, identifier)
+{}
+
+} // anon namespace
+
+} // namespace dp_registry
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_deployment_component_PackageRegistryBackend_get_implementation(
+    css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
+{
+    return cppu::acquire(new dp_registry::backend::component::BackendImpl(args, context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */