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diff --git a/shell/source/backends/kf5be/kf5backend.cxx b/shell/source/backends/kf5be/kf5backend.cxx
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+/* -*- 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 <QtWidgets/QApplication>
+
+#include <com/sun/star/beans/Optional.hpp>
+#include <com/sun/star/beans/UnknownPropertyException.hpp>
+#include <com/sun/star/beans/XPropertyChangeListener.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/beans/XPropertySetInfo.hpp>
+#include <com/sun/star/beans/XVetoableChangeListener.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/uno/Reference.hxx>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <com/sun/star/uno/XCurrentContext.hpp>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weak.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+#include <uno/current_context.hxx>
+#include <vcl/svapp.hxx>
+
+#include <osl/process.h>
+#include <osl/thread.h>
+
+#include "kf5access.hxx"
+
+namespace
+{
+class Service : public cppu::WeakImplHelper<css::lang::XServiceInfo, css::beans::XPropertySet>
+{
+public:
+ Service();
+
+private:
+ // noncopyable until we have good reasons...
+ Service(const Service&) = delete;
+ Service& operator=(const Service&) = delete;
+
+ virtual ~Service() override {}
+
+ virtual OUString SAL_CALL getImplementationName() override
+ {
+ return "com.sun.star.comp.configuration.backend.KF5Backend";
+ }
+
+ virtual sal_Bool SAL_CALL supportsService(OUString const& ServiceName) override
+ {
+ return ServiceName == getSupportedServiceNames()[0];
+ }
+
+ virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override
+ {
+ return { "com.sun.star.configuration.backend.KF5Backend" };
+ }
+
+ virtual css::uno::Reference<css::beans::XPropertySetInfo> SAL_CALL getPropertySetInfo() override
+ {
+ return css::uno::Reference<css::beans::XPropertySetInfo>();
+ }
+
+ virtual void SAL_CALL setPropertyValue(OUString const&, css::uno::Any const&) override;
+
+ virtual css::uno::Any SAL_CALL getPropertyValue(OUString const& PropertyName) override;
+
+ virtual void SAL_CALL addPropertyChangeListener(
+ OUString const&, css::uno::Reference<css::beans::XPropertyChangeListener> const&) override
+ {
+ }
+
+ virtual void SAL_CALL removePropertyChangeListener(
+ OUString const&, css::uno::Reference<css::beans::XPropertyChangeListener> const&) override
+ {
+ }
+
+ virtual void SAL_CALL addVetoableChangeListener(
+ OUString const&, css::uno::Reference<css::beans::XVetoableChangeListener> const&) override
+ {
+ }
+
+ virtual void SAL_CALL removeVetoableChangeListener(
+ OUString const&, css::uno::Reference<css::beans::XVetoableChangeListener> const&) override
+ {
+ }
+
+ std::map<OUString, css::beans::Optional<css::uno::Any>> m_KDESettings;
+};
+
+OString getDisplayArg()
+{
+ OUString aParam;
+ const sal_uInt32 nParams = osl_getCommandArgCount();
+ for (sal_uInt32 nIdx = 0; nIdx < nParams; ++nIdx)
+ {
+ osl_getCommandArg(nIdx, &aParam.pData);
+ if (aParam != "-display")
+ continue;
+
+ ++nIdx;
+ osl_getCommandArg(nIdx, &aParam.pData);
+ return OUStringToOString(aParam, osl_getThreadTextEncoding());
+ }
+ return {};
+}
+
+OString getExecutable()
+{
+ OUString aParam, aBin;
+ osl_getExecutableFile(&aParam.pData);
+ osl_getSystemPathFromFileURL(aParam.pData, &aBin.pData);
+ return OUStringToOString(aBin, osl_getThreadTextEncoding());
+}
+
+void readKDESettings(std::map<OUString, css::beans::Optional<css::uno::Any>>& rSettings)
+{
+ const std::vector<OUString> aKeys
+ = { "EnableATToolSupport", "ExternalMailer", "SourceViewFontHeight",
+ "SourceViewFontName", "WorkPathVariable", "ooInetFTPProxyName",
+ "ooInetFTPProxyPort", "ooInetHTTPProxyName", "ooInetHTTPProxyPort",
+ "ooInetHTTPSProxyName", "ooInetHTTPSProxyPort", "ooInetNoProxy",
+ "ooInetProxyType" };
+
+ for (const OUString& aKey : aKeys)
+ {
+ css::beans::Optional<css::uno::Any> aValue = kf5access::getValue(aKey);
+ std::pair<OUString, css::beans::Optional<css::uno::Any>> elem
+ = std::make_pair(aKey, aValue);
+ rSettings.insert(elem);
+ }
+}
+
+// init the QApplication when we load the kf5backend into a non-Qt vclplug (e.g. gtk3_kde5)
+// TODO: use a helper process to read these values without linking to Qt directly?
+// TODO: share this code somehow with Qt5Instance.cxx?
+void initQApp(std::map<OUString, css::beans::Optional<css::uno::Any>>& rSettings)
+{
+ const auto aDisplay = getDisplayArg();
+ int nFakeArgc = aDisplay.isEmpty() ? 2 : 3;
+ char** pFakeArgv = new char*[nFakeArgc];
+
+ pFakeArgv[0] = strdup(getExecutable().getStr());
+ pFakeArgv[1] = strdup("--nocrashhandler");
+ if (!aDisplay.isEmpty())
+ pFakeArgv[2] = strdup(aDisplay.getStr());
+
+ char* session_manager = nullptr;
+ if (auto* session_manager_env = getenv("SESSION_MANAGER"))
+ {
+ session_manager = strdup(session_manager_env);
+ unsetenv("SESSION_MANAGER");
+ }
+
+ {
+ // rhbz#2047319 drop the SolarMutex during the execution of QApplication::init()
+ // https://invent.kde.org/qt/qt/qtwayland/-/merge_requests/24#note_383915
+ SolarMutexReleaser aReleaser; // rhbz#2047319 drop the SolarMutex during the execution
+
+ std::unique_ptr<QApplication> app(new QApplication(nFakeArgc, pFakeArgv));
+ QObject::connect(app.get(), &QObject::destroyed, app.get(), [nFakeArgc, pFakeArgv]() {
+ for (int i = 0; i < nFakeArgc; ++i)
+ free(pFakeArgv[i]);
+ delete[] pFakeArgv;
+ });
+
+ readKDESettings(rSettings);
+ }
+
+ if (session_manager != nullptr)
+ {
+ // coverity[tainted_string] - trusted source for setenv
+ setenv("SESSION_MANAGER", session_manager, 1);
+ free(session_manager);
+ }
+}
+
+Service::Service()
+{
+ css::uno::Reference<css::uno::XCurrentContext> context(css::uno::getCurrentContext());
+ if (!context.is())
+ return;
+
+ OUString desktop;
+ context->getValueByName("system.desktop-environment") >>= desktop;
+
+ if (desktop == "PLASMA5")
+ {
+ if (!qApp) // no qt event loop yet
+ {
+ // so we start one and read KDE settings
+ initQApp(m_KDESettings);
+ }
+ else // someone else (most likely kde/qt vclplug) has started qt event loop
+ // all that is left to do is to read KDE settings
+ readKDESettings(m_KDESettings);
+ }
+}
+
+void Service::setPropertyValue(OUString const&, css::uno::Any const&)
+{
+ throw css::lang::IllegalArgumentException("setPropertyValue not supported",
+ static_cast<cppu::OWeakObject*>(this), -1);
+}
+
+css::uno::Any Service::getPropertyValue(OUString const& PropertyName)
+{
+ if (PropertyName == "EnableATToolSupport" || PropertyName == "ExternalMailer"
+ || PropertyName == "SourceViewFontHeight" || PropertyName == "SourceViewFontName"
+ || PropertyName == "WorkPathVariable" || PropertyName == "ooInetFTPProxyName"
+ || PropertyName == "ooInetFTPProxyPort" || PropertyName == "ooInetHTTPProxyName"
+ || PropertyName == "ooInetHTTPProxyPort" || PropertyName == "ooInetHTTPSProxyName"
+ || PropertyName == "ooInetHTTPSProxyPort" || PropertyName == "ooInetNoProxy"
+ || PropertyName == "ooInetProxyType")
+ {
+ std::map<OUString, css::beans::Optional<css::uno::Any>>::iterator it
+ = m_KDESettings.find(PropertyName);
+ if (it != m_KDESettings.end())
+ return css::uno::Any(it->second);
+ else
+ return css::uno::Any(css::beans::Optional<css::uno::Any>());
+ }
+ else if (PropertyName == "givenname" || PropertyName == "sn"
+ || PropertyName == "TemplatePathVariable")
+ {
+ return css::uno::Any(css::beans::Optional<css::uno::Any>());
+ //TODO: obtain values from KDE?
+ }
+ throw css::beans::UnknownPropertyException(PropertyName, static_cast<cppu::OWeakObject*>(this));
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+shell_kf5desktop_get_implementation(css::uno::XComponentContext*,
+ css::uno::Sequence<css::uno::Any> const&)
+{
+ return cppu::acquire(new Service());
+}
+}
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */