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

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

16 files changed, 3549 insertions, 0 deletions

diff --git a/jvmfwk/plugins/sunmajor/pluginlib/JREProperties.java b/jvmfwk/plugins/sunmajor/pluginlib/JREProperties.java
new file mode 100644
index 000000000..0d3503af3
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/JREProperties.java
@@ -0,0 +1,62 @@
+/*
+ * 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 .
+ */
+
+import java.util.*;
+
+/** This class prints out the system properties.
+
+    We cannot print the strings directly because of encoding issues. Since
+    about 1.3.1 one can start java with the option -Dfile.encoding=UTF-8, but
+    unfortunately this works only with later update - versions (for example,
+    1.3.1_07). Therefore we use this scheme. The property string has this form:
+    name=value
+
+    Every character is cast to an integer which value is printed, followed by a
+    space. If all characters of the string are printed, then a new line is printed.
+*/
+public class JREProperties
+{
+    public static void main(String[] args)
+    {
+         try
+        {
+            Properties p = System.getProperties();
+            Enumeration e = p.propertyNames();
+            while (e.hasMoreElements()) {
+                String sProp = (String) e.nextElement();
+                String sCompleteProp = sProp + "=" + p.getProperty(sProp);
+                char[] arChars = new char[sCompleteProp.length()];
+                sCompleteProp.getChars(0, sCompleteProp.length(), arChars, 0);
+                for (int c = 0; c < arChars.length; c++) {
+                    System.out.print(String.valueOf((int) arChars[c]));
+                    System.out.print(" ");
+                }
+                System.out.print("\n");
+            }
+        }
+        catch(Exception e)
+        {
+            System.err.println(e);
+        }
+
+        System.exit(0);
+    }
+
+
+
+}
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/diagnostics.h b/jvmfwk/plugins/sunmajor/pluginlib/diagnostics.h
new file mode 100644
index 000000000..599c40438
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/diagnostics.h
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_DIAGNOSTICS_H
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_DIAGNOSTICS_H
+
+#include <sal/config.h>
+
+#include <sal/log.hxx>
+
+#define JFW_ENSURE(c, m) SAL_WARN_IF(!(c), "jfw", m)
+
+#define JFW_TRACE0(m) SAL_INFO("jfw.level1", m)
+
+#define JFW_TRACE2(m) SAL_INFO("jfw.level2", m)
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/otherjre.cxx b/jvmfwk/plugins/sunmajor/pluginlib/otherjre.cxx
new file mode 100644
index 000000000..528af9498
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/otherjre.cxx
@@ -0,0 +1,115 @@
+/* -*- 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 "otherjre.hxx"
+
+using ::rtl::Reference;
+namespace jfw_plugin
+{
+
+Reference<VendorBase> OtherInfo::createInstance()
+{
+    return new OtherInfo;
+}
+
+
+char const* const* OtherInfo::getJavaExePaths(int * size)
+{
+    static char const * ar[] = {
+#if defined(_WIN32)
+        "bin/java.exe",
+        "jre/bin/java.exe"
+#elif defined UNX
+        "bin/java",
+        "jre/bin/java"
+#endif
+    };
+    *size = SAL_N_ELEMENTS (ar);
+    return ar;
+}
+
+char const* const* OtherInfo::getRuntimePaths(int * size)
+{
+    static char const* ar[]= {
+#if defined(_WIN32)
+        "/bin/client/jvm.dll",
+        "/bin/hotspot/jvm.dll",
+        "/bin/classic/jvm.dll",
+        "/bin/jrockit/jvm.dll",
+        // Needed by IBM Semeru Runtime, which is an OpenJDK (so should actually use SunInfo) with a
+        // java.vendor of "IBM Corporation", so using OtherInfo here (cf. gVendorMap in
+        // jvmfwk/plugins/sunmajor/pluginlib/vendorlist.cxx):
+        "/bin/server/jvm.dll"
+#elif defined UNX
+#ifdef MACOSX
+        "/../../../../../Frameworks/JavaVM.framework/JavaVM" //as of  1.6.0_22
+#else
+        "/lib/" JFW_PLUGIN_ARCH "/client/libjvm.so", // for Blackdown PPC
+        "/lib/" JFW_PLUGIN_ARCH "/server/libjvm.so", // for Blackdown AMD64
+        "/lib/" JFW_PLUGIN_ARCH "/classic/libjvm.so", // for Blackdown PPC
+        "/lib/" JFW_PLUGIN_ARCH "/jrockit/libjvm.so", // for Java of BEA Systems
+        "/bin/classic/libjvm.so", // fallback for older for IBM Java
+        "/jre/bin/classic/libjvm.so" // fallback for older for IBM Java
+#endif
+#endif
+
+    };
+    *size = SAL_N_ELEMENTS(ar);
+    return ar;
+}
+
+char const* const* OtherInfo::getLibraryPaths(int* size)
+{
+
+#if defined(UNX) && !defined(MACOSX)
+    //mac version does not have a ld library path anymore
+    static char const * ar[] = {
+        "/bin",
+        "/jre/bin",
+        "/bin/classic",
+        "/jre/bin/classic",
+        "/lib/" JFW_PLUGIN_ARCH "/client",
+        "/lib/" JFW_PLUGIN_ARCH "/server",
+        "/lib/" JFW_PLUGIN_ARCH "/classic",
+        "/lib/" JFW_PLUGIN_ARCH "/jrockit",
+        "/lib/" JFW_PLUGIN_ARCH "/native_threads",
+        ("/lib/" JFW_PLUGIN_ARCH)
+    };
+
+    *size = SAL_N_ELEMENTS(ar);
+    return ar;
+#else
+    *size = 0;
+    return nullptr;
+#endif
+}
+
+int OtherInfo::compareVersions(const OUString& /*sSecond*/) const
+{
+    //Need to provide an own algorithm for comparing version.
+    //Because this function returns always 0, which means the version of
+    //this JRE and the provided version "sSecond" are equal, one cannot put
+    //any excludeVersion entries in the javavendors.xml file.
+    return 0;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/otherjre.hxx b/jvmfwk/plugins/sunmajor/pluginlib/otherjre.hxx
new file mode 100644
index 000000000..f722234ef
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/otherjre.hxx
@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_OTHERJRE_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_OTHERJRE_HXX
+
+#include <vendorbase.hxx>
+
+namespace jfw_plugin
+{
+/* Do not forget to put this class in the vendor map in vendorlist.cxx
+ */
+class OtherInfo : public VendorBase
+{
+public:
+    static char const* const* getJavaExePaths(int* size);
+
+    static rtl::Reference<VendorBase> createInstance();
+
+    virtual char const* const* getRuntimePaths(int* size) override;
+    virtual char const* const* getLibraryPaths(int* size) override;
+    virtual int compareVersions(const OUString& sSecond) const override;
+};
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/sunjavaplugin.cxx b/jvmfwk/plugins/sunmajor/pluginlib/sunjavaplugin.cxx
new file mode 100644
index 000000000..03c38c1de
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/sunjavaplugin.cxx
@@ -0,0 +1,900 @@
+/* -*- 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 .
+ */
+
+
+#ifdef _WIN32
+# include <sys/stat.h>
+# if !defined WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+# endif
+# include <windows.h>
+#endif
+
+#ifdef ANDROID
+# include <dlfcn.h>
+#endif
+
+#include <string.h>
+
+#include <cstddef>
+#include <cassert>
+#include <memory>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+#include <config_options.h>
+#include <osl/diagnose.h>
+#include <rtl/ustring.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <osl/module.hxx>
+#include <osl/mutex.hxx>
+#include <osl/process.h>
+#include <osl/thread.hxx>
+#include <osl/file.hxx>
+#include <sal/log.hxx>
+#include <o3tl/char16_t2wchar_t.hxx>
+#include <setjmp.h>
+#include <signal.h>
+
+#if defined __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunknown-attributes"
+#endif
+#include <jni.h>
+#if defined __clang__
+#pragma clang diagnostic pop
+#endif
+
+#include <rtl/byteseq.hxx>
+#include <fwkbase.hxx>
+#include <elements.hxx>
+#include <vendorbase.hxx>
+#include <vendorplugin.hxx>
+#include <jvmfwk/framework.hxx>
+#include "util.hxx"
+#include "sunversion.hxx"
+#include "diagnostics.h"
+
+#if defined MACOSX && defined __x86_64__
+#include "util_cocoa.hxx"
+#endif
+
+#ifdef ANDROID
+#include <osl/detail/android-bootstrap.h>
+#else
+#if !ENABLE_RUNTIME_OPTIMIZATIONS
+#define FORCE_INTERPRETED 1
+#elif defined HAVE_VALGRIND_HEADERS
+#include <valgrind/valgrind.h>
+#define FORCE_INTERPRETED RUNNING_ON_VALGRIND
+#else
+#define FORCE_INTERPRETED 0
+#endif
+#endif
+
+#if defined LINUX && (defined X86 || defined X86_64)
+#include <sys/resource.h>
+#endif
+
+using namespace osl;
+using namespace jfw_plugin;
+
+
+namespace {
+
+#if defined(UNX) && !defined(ANDROID)
+OString getPluginJarPath(
+    std::u16string_view sVendor,
+    std::u16string_view sLocation,
+    std::u16string_view sVersion)
+{
+    OString ret;
+    OUString sName1("javaplugin.jar");
+    OUString sName2("plugin.jar");
+    OUString sPath;
+    if ( sVendor == u"Sun Microsystems Inc." )
+    {
+        SunVersion ver142("1.4.2-ea");
+        SunVersion ver150("1.5.0-ea");
+        SunVersion ver(sVersion);
+        OSL_ASSERT(ver142 && ver150 && ver);
+
+        OUString sName;
+        if (ver < ver142)
+        {
+            sName = sName1;
+        }
+        else if (ver < ver150)
+        {//this will cause ea, beta etc. to have plugin.jar in path.
+            //but this does not harm. 1.5.0-beta < 1.5.0
+            sName = sName2;
+        }
+        if (!sName.isEmpty())
+        {
+            sName = OUString::Concat(sLocation) + "/lib/" + sName;
+            OSL_VERIFY(
+                osl_getSystemPathFromFileURL(sName.pData, & sPath.pData)
+                == osl_File_E_None);
+        }
+    }
+    else
+    {
+        OUString sName(OUString::Concat(sLocation) + "/lib/" + sName1);
+        OUString sPath1;
+        OUString sPath2;
+        if (osl_getSystemPathFromFileURL(sName.pData, & sPath1.pData)
+            == osl_File_E_None)
+        {
+            sName = OUString::Concat(sLocation) + "/lib/" + sName2;
+            if (osl_getSystemPathFromFileURL(sName.pData, & sPath2.pData)
+                == osl_File_E_None)
+            {
+                sPath = sPath1 + OUStringChar(SAL_PATHSEPARATOR) + sPath2;
+            }
+        }
+        OSL_ASSERT(!sPath.isEmpty());
+    }
+    ret = OUStringToOString(sPath, osl_getThreadTextEncoding());
+
+    return ret;
+}
+#endif // UNX
+
+
+std::unique_ptr<JavaInfo> createJavaInfo(
+    const rtl::Reference<VendorBase> & info)
+{
+    OUStringBuffer buf(1024);
+    buf.append(info->getRuntimeLibrary());
+    if (!info->getLibraryPath().isEmpty())
+    {
+        buf.append("\n");
+        buf.append(info->getLibraryPath());
+        buf.append("\n");
+    }
+    OUString sVendorData = buf.makeStringAndClear();
+    return std::unique_ptr<JavaInfo>(
+        new JavaInfo{
+            info->getVendor(), info->getHome(), info->getVersion(),
+            sal_uInt64(info->needsRestart() ? JFW_REQUIRE_NEEDRESTART : 0),
+            rtl::ByteSequence(
+                reinterpret_cast<sal_Int8*>(sVendorData.pData->buffer),
+                sVendorData.getLength() * sizeof(sal_Unicode))});
+}
+
+OUString getRuntimeLib(const rtl::ByteSequence & data)
+{
+    const sal_Unicode* chars = reinterpret_cast<sal_Unicode const *>(data.getConstArray());
+    sal_Int32 len = data.getLength();
+    OUString sData(chars, len / 2);
+    //the runtime lib is on the first line
+    sal_Int32 index = 0;
+    OUString aToken = sData.getToken( 0, '\n', index);
+
+    return aToken;
+}
+
+jmp_buf jmp_jvm_abort;
+sig_atomic_t g_bInGetJavaVM = 0;
+
+extern "C" void JNICALL abort_handler()
+{
+    // If we are within JNI_CreateJavaVM then we jump back into getJavaVM
+    if( g_bInGetJavaVM != 0 )
+    {
+        SAL_WARN("jfw", "JavaVM: JNI_CreateJavaVM called os::abort(), caught by abort_handler");
+        longjmp( jmp_jvm_abort, 0);
+    }
+}
+
+typedef jint JNICALL JNI_CreateVM_Type(JavaVM **, JNIEnv **, void *);
+
+#ifndef ANDROID
+int createJvm(
+    JNI_CreateVM_Type * pCreateJavaVM, JavaVM ** pJavaVM, JNIEnv ** ppEnv, JavaVMInitArgs * vm_args)
+{
+    /* We set a global flag which is used by the abort handler in order to
+       determine whether it is  should use longjmp to get back into this function.
+       That is, the abort handler determines if it is on the same stack as this function
+       and then jumps back into this function.
+    */
+    g_bInGetJavaVM = 1;
+    jint err;
+    memset( jmp_jvm_abort, 0, sizeof(jmp_jvm_abort));
+    /* If the setjmp return value is not "0" then this point was reached by a longjmp in the
+       abort_handler, which was called indirectly by JNI_CreateVM.
+    */
+    if( setjmp( jmp_jvm_abort ) == 0)
+    {
+        //returns negative number on failure
+        err= pCreateJavaVM(pJavaVM, ppEnv, vm_args);
+        g_bInGetJavaVM = 0;
+    }
+    else
+        // set err to a positive number, so as or recognize that an abort (longjmp)
+        //occurred
+        err= 1;
+    return err;
+}
+#endif
+
+/** helper function to check Java version requirements
+
+    This function checks if the Java version of the given VendorBase
+    meets the given Java version requirements.
+
+    @param aVendorInfo
+        [in]  the object to be inspected whether it meets the version requirements
+    @param sMinVersion
+        [in] represents the minimum version of a JRE. The string can be empty.
+    @param sMaxVersion
+        [in] represents the maximum version of a JRE. The string can be empty.
+    @param arExcludeList
+        [in] contains a list of &quot;bad&quot; versions. JREs which have one of these
+        versions must not be returned by this function.
+
+   @return
+    javaPluginError::NONE the function ran successfully and the version requirements are met
+    javaPluginError::FailedVersion at least one of the version requirements (minVersion,
+    maxVersion, excludeVersions) was violated
+    javaPluginError::WrongVersionFormat the version strings in
+    <code>sMinVersion,sMaxVersion,arExcludeList</code> are not recognized as valid
+    version strings.
+
+     */
+javaPluginError checkJavaVersionRequirements(
+    rtl::Reference<VendorBase> const & aVendorInfo,
+    OUString const& sMinVersion,
+    OUString const& sMaxVersion,
+    std::vector<OUString> const & arExcludeList)
+{
+    if (!aVendorInfo->isValidArch())
+    {
+        return javaPluginError::WrongArch;
+    }
+    if (!sMinVersion.isEmpty())
+    {
+        try
+        {
+            if (aVendorInfo->compareVersions(sMinVersion) < 0)
+                return javaPluginError::FailedVersion;
+        }
+        catch (MalformedVersionException&)
+        {
+            //The minVersion was not recognized as valid for this vendor.
+            JFW_ENSURE(
+                false,
+                "[Java framework]sunjavaplugin does not know version: "
+                + sMinVersion + " for vendor: " + aVendorInfo->getVendor()
+                + " .Check minimum Version." );
+            return javaPluginError::WrongVersionFormat;
+        }
+    }
+
+    if (!sMaxVersion.isEmpty())
+    {
+        try
+        {
+            if (aVendorInfo->compareVersions(sMaxVersion) > 0)
+                return javaPluginError::FailedVersion;
+        }
+        catch (MalformedVersionException&)
+        {
+            //The maxVersion was not recognized as valid for this vendor.
+            JFW_ENSURE(
+                false,
+                "[Java framework]sunjavaplugin does not know version: "
+                + sMaxVersion + " for vendor: " + aVendorInfo->getVendor()
+                + " .Check maximum Version." );
+            return javaPluginError::WrongVersionFormat;
+        }
+    }
+
+    for (auto const & sExVer: arExcludeList) {
+        try
+        {
+            if (aVendorInfo->compareVersions(sExVer) == 0)
+                return javaPluginError::FailedVersion;
+        }
+        catch (MalformedVersionException&)
+        {
+            //The excluded version was not recognized as valid for this vendor.
+            JFW_ENSURE(
+                false,
+                "[Java framework]sunjavaplugin does not know version: "
+                + sExVer + " for vendor: " + aVendorInfo->getVendor()
+                + " .Check excluded versions." );
+            return javaPluginError::WrongVersionFormat;
+        }
+    }
+
+    return javaPluginError::NONE;
+}
+
+}
+
+javaPluginError jfw_plugin_getAllJavaInfos(
+    bool checkJavaHomeAndPath,
+    jfw::VendorSettings const & vendorSettings,
+    std::vector<std::unique_ptr<JavaInfo>>* parJavaInfo,
+    std::vector<rtl::Reference<jfw_plugin::VendorBase>> & infos)
+{
+    assert(parJavaInfo);
+
+    //Find all JREs
+    std::vector<rtl::Reference<VendorBase> > vecInfos =
+        addAllJREInfos(checkJavaHomeAndPath, infos);
+    std::vector<rtl::Reference<VendorBase> > vecVerifiedInfos;
+
+    for (auto const& vecInfo : vecInfos)
+    {
+        auto const versionInfo = vendorSettings.getVersionInformation(vecInfo->getVendor());
+        javaPluginError err = checkJavaVersionRequirements(
+            vecInfo, versionInfo.sMinVersion, versionInfo.sMaxVersion, versionInfo.vecExcludeVersions);
+
+        if (err == javaPluginError::FailedVersion || err == javaPluginError::WrongArch)
+            continue;
+        else if (err == javaPluginError::WrongVersionFormat)
+            return err;
+
+        vecVerifiedInfos.push_back(vecInfo);
+    }
+    //Now vecVerifiedInfos contains all those JREs which meet the version requirements
+    //Transfer them into the array that is passed out.
+    parJavaInfo->clear();
+    for (auto const& vecVerifiedInfo : vecVerifiedInfos)
+    {
+        parJavaInfo->push_back(createJavaInfo(vecVerifiedInfo));
+    }
+
+    return javaPluginError::NONE;
+}
+
+javaPluginError jfw_plugin_getJavaInfoByPath(
+    OUString const& sPath,
+    jfw::VendorSettings const & vendorSettings,
+    std::unique_ptr<JavaInfo> * ppInfo)
+{
+    assert(ppInfo != nullptr);
+    OSL_ASSERT(!sPath.isEmpty());
+    if (sPath.isEmpty())
+        return javaPluginError::InvalidArg;
+
+    rtl::Reference<VendorBase> aVendorInfo = getJREInfoByPath(sPath);
+    if (!aVendorInfo.is())
+        return javaPluginError::NoJre;
+
+    //Check if the detected JRE matches the version requirements
+    javaPluginError errorcode = javaPluginError::NONE;
+    auto const versionInfo = vendorSettings.getVersionInformation(aVendorInfo->getVendor());
+    errorcode = checkJavaVersionRequirements(
+        aVendorInfo, versionInfo.sMinVersion, versionInfo.sMaxVersion, versionInfo.vecExcludeVersions);
+
+    if (errorcode == javaPluginError::NONE)
+        *ppInfo = createJavaInfo(aVendorInfo);
+
+    return errorcode;
+}
+
+javaPluginError jfw_plugin_getJavaInfoFromJavaHome(
+    jfw::VendorSettings const & vendorSettings,
+    std::unique_ptr<JavaInfo> * ppInfo,
+    std::vector<rtl::Reference<VendorBase>> & infos)
+{
+    assert(ppInfo);
+
+    std::vector<rtl::Reference<VendorBase>> infoJavaHome;
+    addJavaInfoFromJavaHome(infos, infoJavaHome);
+
+    if (infoJavaHome.empty())
+        return javaPluginError::NoJre;
+    assert(infoJavaHome.size() == 1);
+
+    //Check if the detected JRE matches the version requirements
+    auto const versionInfo = vendorSettings.getVersionInformation(infoJavaHome[0]->getVendor());
+    if (checkJavaVersionRequirements(
+                infoJavaHome[0],
+                versionInfo.sMinVersion,
+                versionInfo.sMaxVersion,
+                versionInfo.vecExcludeVersions)
+            == javaPluginError::NONE)
+    {
+        *ppInfo = createJavaInfo(infoJavaHome[0]);
+        return javaPluginError::NONE;
+    }
+
+    return javaPluginError::NoJre;
+}
+
+javaPluginError jfw_plugin_getJavaInfosFromPath(
+    jfw::VendorSettings const & vendorSettings,
+    std::vector<std::unique_ptr<JavaInfo>> & javaInfosFromPath,
+    std::vector<rtl::Reference<jfw_plugin::VendorBase>> & infos)
+{
+    // find JREs from PATH
+    std::vector<rtl::Reference<VendorBase>> vecInfosFromPath;
+    addJavaInfosFromPath(infos, vecInfosFromPath);
+
+    std::vector<std::unique_ptr<JavaInfo>> vecVerifiedInfos;
+
+    // copy infos of JREs that meet version requirements to vecVerifiedInfos
+    for (auto const& infosFromPath : vecInfosFromPath)
+    {
+        auto const versionInfo = vendorSettings.getVersionInformation(infosFromPath->getVendor());
+        if (checkJavaVersionRequirements(
+                    infosFromPath,
+                    versionInfo.sMinVersion,
+                    versionInfo.sMaxVersion,
+                    versionInfo.vecExcludeVersions)
+                == javaPluginError::NONE)
+        {
+            vecVerifiedInfos.push_back(createJavaInfo(infosFromPath));
+        }
+    }
+
+    if (vecVerifiedInfos.empty())
+        return javaPluginError::NoJre;
+
+    javaInfosFromPath = std::move(vecVerifiedInfos);
+
+    return javaPluginError::NONE;
+}
+
+
+#if defined(_WIN32)
+
+// Load msvcr71.dll using an explicit full path from where it is
+// present as bundled with the JRE. In case it is not found where we
+// think it should be, do nothing, and just let the implicit loading
+// that happens when loading the JVM take care of it.
+
+static void load_msvcr(std::u16string_view jvm_dll, std::u16string_view msvcr)
+{
+    // First check if msvcr71.dll is in the same folder as jvm.dll. It
+    // normally isn't, at least up to 1.6.0_22, but who knows if it
+    // might be in the future.
+    std::size_t slash = jvm_dll.rfind('\\');
+
+    if (slash == std::u16string_view::npos)
+    {
+        // Huh, weird path to jvm.dll. Oh well.
+        SAL_WARN("jfw", "JVM pathname <" << OUString(jvm_dll) << "> w/o backslash");
+        return;
+    }
+
+    if (LoadLibraryW(
+            o3tl::toW(OUString(OUString::Concat(jvm_dll.substr(0, slash+1)) + msvcr).getStr())))
+        return;
+
+    // Then check if msvcr71.dll is in the parent folder of where
+    // jvm.dll is. That is currently (1.6.0_22) as far as I know the
+    // normal case.
+    slash = jvm_dll.rfind('\\', slash);
+
+    if (slash == std::u16string_view::npos)
+        return;
+
+    (void)LoadLibraryW(
+        o3tl::toW(OUString(OUString::Concat(jvm_dll.substr(0, slash+1)) + msvcr).getStr()));
+}
+
+// Check if the jvm DLL imports msvcr71.dll, and in that case try
+// loading it explicitly. In case something goes wrong, do nothing,
+// and just let the implicit loading try to take care of it.
+static void do_msvcr_magic(OUString const &jvm_dll)
+{
+    struct stat st;
+
+    OUString Module;
+    osl::FileBase::RC nError = osl::FileBase::getSystemPathFromFileURL(
+        jvm_dll, Module);
+
+    if ( osl::FileBase::E_None != nError )
+    {
+        SAL_WARN(
+            "jfw", "getSystemPathFromFileURL(" << jvm_dll << "): " << +nError);
+        return;
+    }
+
+    FILE *f = _wfopen(o3tl::toW(Module.getStr()), L"rb");
+
+    if (!f)
+    {
+        SAL_WARN("jfw", "_wfopen(" << Module << ") failed");
+        return;
+    }
+
+    if (fstat(fileno(f), &st) == -1)
+    {
+        SAL_WARN("jfw", "fstat(" << Module << ") failed");
+        fclose(f);
+        return;
+    }
+
+    PIMAGE_DOS_HEADER dos_hdr = static_cast<PIMAGE_DOS_HEADER>(malloc(st.st_size));
+    assert(dos_hdr);
+    if (fread(dos_hdr, st.st_size, 1, f) != 1 ||
+        memcmp(dos_hdr, "MZ", 2) != 0 ||
+        dos_hdr->e_lfanew < 0 ||
+        dos_hdr->e_lfanew > static_cast<LONG>(st.st_size - sizeof(IMAGE_NT_HEADERS)))
+    {
+        SAL_WARN("jfw", "analyzing <" << Module << "> failed");
+        free(dos_hdr);
+        fclose(f);
+        return;
+    }
+
+    fclose(f);
+
+    IMAGE_NT_HEADERS *nt_hdr = reinterpret_cast<IMAGE_NT_HEADERS *>(reinterpret_cast<char *>(dos_hdr) + dos_hdr->e_lfanew);
+
+    DWORD importsVA = nt_hdr->OptionalHeader
+            .DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress;
+    // first determine Virtual-to-File-address mapping for the section
+    // that contains the import directory
+    IMAGE_SECTION_HEADER *sections = IMAGE_FIRST_SECTION(nt_hdr);
+    ptrdiff_t VAtoPhys = -1;
+    for (int i = 0; i < nt_hdr->FileHeader.NumberOfSections; ++i)
+    {
+        if (sections->VirtualAddress <= importsVA &&
+            importsVA < sections->VirtualAddress + sections->SizeOfRawData)
+        {
+            VAtoPhys = static_cast<size_t>(sections->PointerToRawData) - static_cast<size_t>(sections->VirtualAddress);
+            break;
+        }
+        ++sections;
+    }
+    if (-1 == VAtoPhys) // not found?
+    {
+        SAL_WARN("jfw", "analyzing <" << Module << "> failed");
+        free(dos_hdr);
+        return;
+    }
+    IMAGE_IMPORT_DESCRIPTOR *imports =
+        reinterpret_cast<IMAGE_IMPORT_DESCRIPTOR *>(reinterpret_cast<char *>(dos_hdr) + importsVA + VAtoPhys);
+
+    while (imports <= reinterpret_cast<IMAGE_IMPORT_DESCRIPTOR *>(reinterpret_cast<char *>(dos_hdr) + st.st_size - sizeof (IMAGE_IMPORT_DESCRIPTOR)) &&
+           imports->Name != 0 &&
+           imports->Name + VAtoPhys < static_cast<DWORD>(st.st_size))
+    {
+        static std::u16string_view msvcrts[] =
+        {
+            u"msvcr71.dll",
+            u"msvcr100.dll"
+        };
+        char const* importName = reinterpret_cast<char *>(dos_hdr) + imports->Name + VAtoPhys;
+        sal_Int32 importNameLen = rtl_str_getLength(importName);
+        for (size_t i = 0; i < SAL_N_ELEMENTS(msvcrts); ++i)
+        {
+            if (0 == rtl_ustr_ascii_compareIgnoreAsciiCase_WithLengths(
+                    msvcrts[i].data(), msvcrts[i].size(),
+                    importName, importNameLen))
+            {
+                load_msvcr(Module, msvcrts[i]);
+                free(dos_hdr);
+                return;
+            }
+        }
+        imports++;
+    }
+
+    free(dos_hdr);
+}
+
+#endif
+
+/** starts a Java Virtual Machine.
+    <p>
+    The function shall ensure, that the VM does not abort the process
+    during instantiation.
+    </p>
+ */
+javaPluginError jfw_plugin_startJavaVirtualMachine(
+    const JavaInfo *pInfo,
+    const JavaVMOption* arOptions,
+    sal_Int32 cOptions,
+    JavaVM ** ppVm,
+    JNIEnv ** ppEnv)
+{
+    static osl::Mutex aPluginMutex;
+    assert(pInfo != nullptr);
+    assert(ppVm != nullptr);
+    assert(ppEnv != nullptr);
+    osl::MutexGuard guard(aPluginMutex);
+    javaPluginError errorcode = javaPluginError::NONE;
+#ifdef MACOSX
+    rtl::Reference<VendorBase> aVendorInfo = getJREInfoByPath( pInfo->sLocation );
+    if ( !aVendorInfo.is() || aVendorInfo->compareVersions( pInfo->sVersion ) < 0 )
+        return javaPluginError::VmCreationFailed;
+#endif
+    OUString sRuntimeLib = getRuntimeLib(pInfo->arVendorData);
+#if defined MACOSX && defined __x86_64__
+    if ( !JvmfwkUtil_isLoadableJVM( sRuntimeLib ) )
+        return javaPluginError::VmCreationFailed;
+#endif
+    JFW_TRACE2("Using Java runtime library: " << sRuntimeLib);
+
+#ifndef ANDROID
+    // On linux we load jvm with RTLD_GLOBAL. This is necessary for debugging, because
+    // libjdwp.so need a symbol (fork1) from libjvm which it only gets if the jvm is loaded
+    // with RTLD_GLOBAL. On Solaris libjdwp.so is correctly linked with libjvm.so
+    osl::Module moduleRt;
+#if defined(LINUX)
+    if (!moduleRt.load(sRuntimeLib, SAL_LOADMODULE_GLOBAL | SAL_LOADMODULE_NOW))
+#elif defined MACOSX
+    // Must be SAL_LOADMODULE_GLOBAL when e.g. specifying a
+    // -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8000 option to
+    // JDK 1.8.0_121 at least, as JNI_CreateJavaVM -> Threads::create_vm ->
+    // JvmtiExport::post_vm_initialized -> cbEarlyVMInit -> initialize ->
+    // util_initialize -> sun.misc.VMSupport.getAgentProperties ->
+    // Java_sun_misc_VMSupport_initAgentProperties ->
+    // JDK_FindJvmEntry("JVM_INitAgentProperties") ->
+    // dlsym(RTLD_DEFAULT, "JVM_INitAgentProperties"):
+    if (!moduleRt.load(sRuntimeLib, SAL_LOADMODULE_GLOBAL))
+#else
+#if defined(_WIN32)
+    do_msvcr_magic(sRuntimeLib);
+#endif
+    if (!moduleRt.load(sRuntimeLib))
+#endif
+    {
+        JFW_ENSURE(false,
+                   "[Java framework]sunjavaplugin" SAL_DLLEXTENSION
+                      " could not load Java runtime library: \n"
+                   + sRuntimeLib + "\n");
+        JFW_TRACE0("Could not load Java runtime library: " << sRuntimeLib);
+        return javaPluginError::VmCreationFailed;
+    }
+
+#if defined UNX && !defined MACOSX
+    //Setting the JAVA_HOME is needed for awt
+    OUString sPathLocation;
+    osl::FileBase::getSystemPathFromFileURL(pInfo->sLocation, sPathLocation);
+    osl_setEnvironment(OUString("JAVA_HOME").pData, sPathLocation.pData);
+#endif
+
+    OUString sSymbolCreateJava("JNI_CreateJavaVM");
+
+    JNI_CreateVM_Type * pCreateJavaVM =
+        reinterpret_cast<JNI_CreateVM_Type *>(moduleRt.getFunctionSymbol(sSymbolCreateJava));
+    if (!pCreateJavaVM)
+    {
+        OSL_ASSERT(false);
+        OString sLib = OUStringToOString(
+            sRuntimeLib, osl_getThreadTextEncoding());
+        OString sSymbol = OUStringToOString(
+            sSymbolCreateJava, osl_getThreadTextEncoding());
+        SAL_WARN("jfw", "Java runtime library: " << sLib << " does not export symbol " << sSymbol);
+        return javaPluginError::VmCreationFailed;
+    }
+    moduleRt.release();
+
+    // Valgrind typically emits many false errors when executing JIT'ed JVM
+    // code, so force the JVM into interpreted mode:
+    bool addForceInterpreted = FORCE_INTERPRETED > 0;
+
+    // Some testing with Java 1.4 showed that JavaVMOption.optionString has to
+    // be encoded with the system encoding (i.e., osl_getThreadTextEncoding):
+    JavaVMInitArgs vm_args;
+
+    struct Option {
+        Option(OString const & theOptionString, void * theExtraInfo):
+            optionString(theOptionString), extraInfo(theExtraInfo)
+        {}
+
+        OString optionString;
+        void * extraInfo;
+    };
+    std::vector<Option> options;
+
+    // We set an abort handler which is called when the VM calls _exit during
+    // JNI_CreateJavaVM. This happens when the LD_LIBRARY_PATH does not contain
+    // all some directories of the Java installation. This is necessary for
+    // all versions below 1.5.1
+    options.emplace_back("abort", reinterpret_cast<void*>(abort_handler));
+    bool hasStackSize = false;
+#ifdef UNX
+    // Until java 1.5 we need to put a plugin.jar or javaplugin.jar (<1.4.2)
+    // in the class path in order to have applet support:
+    OString sAddPath = getPluginJarPath(pInfo->sVendor, pInfo->sLocation,pInfo->sVersion);
+#endif
+    for (int i = 0; i < cOptions; i++)
+    {
+        OString opt(arOptions[i].optionString);
+#ifdef UNX
+        if (opt.startsWith("-Djava.class.path="))
+        {
+            if (!sAddPath.isEmpty())
+            {
+                opt += OStringChar(SAL_PATHSEPARATOR) + sAddPath;
+                sAddPath.clear();
+            }
+        }
+#endif
+        if (opt == "-Xint") {
+            addForceInterpreted = false;
+        }
+        if (opt.startsWith("-Xss")) {
+            hasStackSize = true;
+        }
+        options.emplace_back(opt, arOptions[i].extraInfo);
+    }
+    if (addForceInterpreted) {
+        options.emplace_back("-Xint", nullptr);
+    }
+    if (!hasStackSize) {
+#if defined LINUX && (defined X86 || defined X86_64)
+        // At least OpenJDK 1.8.0's os::workaround_expand_exec_shield_cs_limit
+        // (hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp) can mmap an rwx
+        // page into the area that the main stack can grow down to according to
+        // "ulimit -s", as os::init_2's (hotspot/src/os/linux/vm/os_linux.cpp)
+        // call to
+        //
+        //   Linux::capture_initial_stack(JavaThread::stack_size_at_create());
+        //
+        // caps _initial_thread_stack_size at threadStackSizeInBytes ,i.e.,
+        // -Xss, which appears to default to only 327680, whereas "ulimit -s"
+        // defaults to 8192 * 1024 at least on Fedora 20; so attempt to pass in
+        // a useful -Xss argument:
+        rlimit l;
+        if (getrlimit(RLIMIT_STACK, &l) == 0) {
+            if (l.rlim_cur == RLIM_INFINITY) {
+                SAL_INFO("jfw", "RLIMIT_STACK RLIM_INFINITY -> 8192K");
+                l.rlim_cur = 8192 * 1024;
+            } else if (l.rlim_cur > 512 * 1024 * 1024) {
+                SAL_INFO(
+                    "jfw", "huge RLIMIT_STACK " << l.rlim_cur << " -> 8192K");
+                l.rlim_cur = 8192 * 1024;
+            }
+            options.emplace_back("-Xss" + OString::number(l.rlim_cur), nullptr);
+        } else {
+            int e = errno;
+            SAL_WARN("jfw", "getrlimit(RLIMIT_STACK) failed with errno " << e);
+        }
+#endif
+    }
+#ifdef UNX
+    if (!sAddPath.isEmpty()) {
+        options.emplace_back("-Djava.class.path=" + sAddPath, nullptr);
+    }
+#endif
+
+    std::unique_ptr<JavaVMOption[]> sarOptions(new JavaVMOption[options.size()]);
+    for (std::vector<Option>::size_type i = 0; i != options.size(); ++i) {
+        SAL_INFO(
+            "jfw",
+            "VM option \"" << options[i].optionString << "\" "
+                << options[i].extraInfo);
+        sarOptions[i].optionString = const_cast<char *>(
+            options[i].optionString.getStr());
+        sarOptions[i].extraInfo = options[i].extraInfo;
+    }
+
+#ifdef MACOSX
+    vm_args.version= JNI_VERSION_1_4; // issue 88987
+#else
+    vm_args.version= JNI_VERSION_1_2;
+#endif
+    vm_args.options= sarOptions.get();
+    vm_args.nOptions= options.size(); //TODO overflow
+    vm_args.ignoreUnrecognized= JNI_TRUE;
+
+    JavaVM * pJavaVM = nullptr;
+    jint err = createJvm(pCreateJavaVM, &pJavaVM, ppEnv, &vm_args);
+
+    if(err != 0)
+    {
+        if( err < 0)
+        {
+            SAL_WARN("jfw", "Can not create Java Virtual Machine, " << err);
+            errorcode = javaPluginError::VmCreationFailed;
+        }
+        else if( err > 0)
+        {
+            SAL_WARN("jfw", "Can not create JavaVirtualMachine, abort handler was called");
+            errorcode = javaPluginError::VmCreationFailed;
+        }
+    }
+    else
+    {
+        *ppVm = pJavaVM;
+        JFW_TRACE2("JVM created");
+    }
+#else
+    (void) arOptions;
+    (void) cOptions;
+    (void) ppEnv;
+    // On Android we always have a Java VM as we only expect this code
+    // to be run in an Android app anyway.
+    *ppVm = lo_get_javavm();
+#endif
+
+    return errorcode;
+}
+
+javaPluginError jfw_plugin_existJRE(const JavaInfo *pInfo, bool *exist)
+{
+    assert(pInfo != nullptr);
+    assert(exist != nullptr);
+
+    javaPluginError ret = javaPluginError::NONE;
+    OUString sLocation(pInfo->sLocation);
+
+    if (sLocation.isEmpty())
+        return javaPluginError::InvalidArg;
+    ::osl::DirectoryItem item;
+    ::osl::File::RC rc_item = ::osl::DirectoryItem::get(sLocation, item);
+    if (::osl::File::E_None == rc_item)
+    {
+        *exist = true;
+    }
+    else if (::osl::File::E_NOENT == rc_item)
+    {
+        *exist = false;
+    }
+    else
+    {
+        ret = javaPluginError::Error;
+    }
+    //We can have the situation that the JavaVM runtime library is not
+    //contained within JAVA_HOME. Then the check for JAVA_HOME would return
+    //true although the runtime library may not be loadable.
+    //Or the JAVA_HOME directory of a deinstalled JRE left behind.
+    if (ret == javaPluginError::NONE && *exist)
+    {
+        OUString sRuntimeLib = getRuntimeLib(pInfo->arVendorData);
+        JFW_TRACE2("Checking existence of Java runtime library");
+
+        ::osl::DirectoryItem itemRt;
+        ::osl::File::RC rc_itemRt = ::osl::DirectoryItem::get(sRuntimeLib, itemRt);
+        if (::osl::File::E_None == rc_itemRt)
+        {
+            *exist = true;
+            JFW_TRACE2("Java runtime library exist: " << sRuntimeLib);
+
+            // Check version
+            rtl::Reference<VendorBase> aVendorInfo = getJREInfoByPath(sLocation);
+            if (!aVendorInfo.is())
+            {
+                *exist = false;
+                JFW_TRACE2("JRE or supported vendor not accessible at location: " << sLocation);
+            }
+            else if(pInfo->sVersion!=aVendorInfo->getVersion())
+            {
+                *exist = false;
+                JFW_TRACE2("Mismatch between version number in libreoffice settings and installed JRE:  " << pInfo->sVersion <<" != " << aVendorInfo->getVersion());
+            }
+        }
+        else if (::osl::File::E_NOENT == rc_itemRt)
+        {
+            *exist = false;
+            JFW_TRACE2("Java runtime library does not exist: " << sRuntimeLib);
+        }
+        else
+        {
+            ret = javaPluginError::Error;
+            JFW_TRACE2("Error while looking for Java runtime library: " << sRuntimeLib);
+        }
+    }
+    return ret;
+}
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/sunjre.cxx b/jvmfwk/plugins/sunmajor/pluginlib/sunjre.cxx
new file mode 100644
index 000000000..a0f8cbee1
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/sunjre.cxx
@@ -0,0 +1,116 @@
+/* -*- 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 "sunjre.hxx"
+#include "sunversion.hxx"
+#include "diagnostics.h"
+
+namespace jfw_plugin
+{
+
+rtl::Reference<VendorBase> SunInfo::createInstance()
+{
+    return new SunInfo;
+}
+
+char const* const* SunInfo::getJavaExePaths(int * size)
+{
+    static char const * ar[] = {
+#if defined(_WIN32)
+        "java.exe",
+        "bin/java.exe",
+        "jre/bin/java.exe"
+#elif defined UNX
+        "java",
+        "bin/java",
+        "jre/bin/java"
+#endif
+    };
+    *size = SAL_N_ELEMENTS(ar);
+    return ar;
+}
+
+char const* const* SunInfo::getRuntimePaths(int * size)
+{
+    static char const* ar[]= {
+#if defined(_WIN32)
+        "/bin/client/jvm.dll",
+        "/bin/hotspot/jvm.dll",
+        "/bin/classic/jvm.dll",
+        "/bin/jrockit/jvm.dll",
+        // The 64-bit JRE has the jvm in bin/server
+        "/bin/server/jvm.dll"
+#elif defined MACOSX
+        // Oracle Java 7, under /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
+        "/lib/server/libjvm.dylib",
+        "/lib/jli/libjli.dylib"
+#elif defined UNX
+        "/lib/" JFW_PLUGIN_ARCH "/client/libjvm.so",
+        "/lib/" JFW_PLUGIN_ARCH "/server/libjvm.so",
+        "/lib/" JFW_PLUGIN_ARCH "/classic/libjvm.so",
+        "/lib/" JFW_PLUGIN_ARCH "/jrockit/libjvm.so",
+        "/lib/server/libjvm.so"
+#endif
+    };
+    *size = SAL_N_ELEMENTS(ar);
+    return ar;
+}
+
+char const* const* SunInfo::getLibraryPaths(int* size)
+{
+#if defined UNX && !defined MACOSX
+    static char const * ar[] = {
+        "/lib/" JFW_PLUGIN_ARCH "/client",
+        "/lib/" JFW_PLUGIN_ARCH "/server",
+        "/lib/" JFW_PLUGIN_ARCH "/native_threads",
+        ("/lib/" JFW_PLUGIN_ARCH)
+    };
+    *size = SAL_N_ELEMENTS(ar);
+    return ar;
+#else
+    *size = 0;
+    return nullptr;
+#endif
+}
+
+int SunInfo::compareVersions(const OUString& sSecond) const
+{
+    OUString sFirst = getVersion();
+
+    SunVersion version1(sFirst);
+    JFW_ENSURE(version1, "[Java framework] sunjavaplugin" SAL_DLLEXTENSION
+                         " does not know the version: "
+               + sFirst + " as valid for a SUN/Oracle JRE.");
+    SunVersion version2(sSecond);
+    if ( ! version2)
+        throw MalformedVersionException();
+
+    if (version1 == version2)
+        return 0;
+    if (version1 > version2)
+        return 1;
+    else
+        return -1;
+}
+
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/sunjre.hxx b/jvmfwk/plugins/sunmajor/pluginlib/sunjre.hxx
new file mode 100644
index 000000000..773f40080
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/sunjre.hxx
@@ -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 .
+ */
+
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_SUNJRE_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_SUNJRE_HXX
+
+#include <vendorbase.hxx>
+
+namespace jfw_plugin
+{
+class SunInfo : public VendorBase
+{
+public:
+    static char const* const* getJavaExePaths(int* size);
+
+    static rtl::Reference<VendorBase> createInstance();
+
+    virtual char const* const* getRuntimePaths(int* size) override;
+    virtual char const* const* getLibraryPaths(int* size) override;
+
+    virtual int compareVersions(const OUString& sSecond) const override;
+};
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/sunversion.cxx b/jvmfwk/plugins/sunmajor/pluginlib/sunversion.cxx
new file mode 100644
index 000000000..16a1e14f3
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/sunversion.cxx
@@ -0,0 +1,303 @@
+/* -*- 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 "sunversion.hxx"
+#include <osl/thread.h>
+#include <rtl/character.hxx>
+#include <rtl/ustring.hxx>
+#include <string.h>
+namespace jfw_plugin  { //stoc_javadetect
+
+
+SunVersion::SunVersion(std::u16string_view usVer):
+    m_nUpdateSpecial(0), m_preRelease(Rel_NONE)
+{
+    OString sVersion= OUStringToOString(usVer, osl_getThreadTextEncoding());
+    m_bValid = init(sVersion.getStr());
+}
+SunVersion::SunVersion(const char * szVer):
+    m_nUpdateSpecial(0), m_preRelease(Rel_NONE)
+{
+    m_bValid = init(szVer);
+}
+
+
+/**Format major.minor.maintenance_update
+ */
+bool SunVersion::init(const char *szVersion)
+{
+    if (!szVersion || szVersion[0] == '\0')
+        return false;
+
+    //first get the major,minor,maintenance
+    const char * pLast = szVersion;
+    const char * pCur = szVersion;
+    //pEnd point to the position after the last character
+    const char * pEnd = szVersion + strlen(szVersion);
+    // 0 = major, 1 = minor, 2 = maintenance, 3 = update
+    int nPart = 0;
+    // position within part beginning with 0
+    int nPartPos = 0;
+    char buf[128];
+
+    //char must me a number 0 - 999 and no leading
+    while (true)
+    {
+        if (pCur < pEnd && rtl::isAsciiDigit(static_cast<unsigned char>(*pCur)))
+        {
+            pCur ++;
+            nPartPos ++;
+        }
+        //if  correct separator then form integer
+        else if (
+            (nPartPos != 0) // prevents: ".4.1", "..1", part must start with digit
+            && (
+                //separators after maintenance (1.4.1_01, 1.4.1-beta, or 1.4.1)
+                (pCur == pEnd || *pCur == '_' || *pCur == '-')
+                ||
+                //separators between major-minor and minor-maintenance (or fourth segment)
+                (nPart < 3 && *pCur == '.') )
+            && (
+                //prevent 1.4.0. 1.4.0-
+                pCur + 1 != pEnd
+                || rtl::isAsciiDigit(static_cast<unsigned char>(*pCur))) )
+        {
+            bool afterMaint = pCur == pEnd || *pCur == '_' || *pCur == '-';
+
+            int len = pCur - pLast;
+            if (len >= 127)
+                return false;
+
+            strncpy(buf, pLast, len);
+            buf[len] = 0;
+            pCur ++;
+            pLast = pCur;
+
+            m_arVersionParts[nPart] = atoi(buf);
+
+            if (afterMaint)
+                nPart = 2;
+            nPart ++;
+            nPartPos = 0;
+            if (nPart == 3)
+                break;
+
+            //check next character
+            if (! ( (pCur < pEnd)
+                    && ( (nPart < 3)
+                         && rtl::isAsciiDigit(
+                             static_cast<unsigned char>(*pCur)))))
+                return false;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    if (pCur >= pEnd)
+        return true;
+    //We have now 1.4.1. This can be followed by _01 (or a fourth segment .1), -beta, etc.
+    // _01 (update) According to docu must not be followed by any other
+    //characters, but on Solaris 9 we have a 1.4.1_01a!!
+    if (* (pCur - 1) == '_' || *(pCur - 1) == '.')
+    {// _01, _02
+        // update is the last part _01, _01a, part 0 is the digits parts and 1 the trailing alpha
+        while (true)
+        {
+            if (pCur <= pEnd)
+            {
+                if ( ! rtl::isAsciiDigit(static_cast<unsigned char>(*pCur)))
+                {
+                    //1.8.0_102-, 1.8.0_01a,
+                    size_t len = pCur - pLast;
+                    if (len > sizeof(buf) - 1)
+                        return false;
+                    //we've got the update: 01, 02 etc
+                    strncpy(buf, pLast, len);
+                    buf[len] = 0;
+                    m_arVersionParts[nPart] = atoi(buf);
+                    if (pCur == pEnd)
+                    {
+                        break;
+                    }
+                    if (*pCur == 'a' && (pCur + 1) == pEnd)
+                    {
+                        //check if it s followed by a simple "a" (not specified)
+                        m_nUpdateSpecial = *pCur;
+                        break;
+                    }
+                    else if (*pCur == '-' && pCur < pEnd)
+                    {
+                        //check 1.5.0_01-ea
+                        PreRelease pr = getPreRelease(++pCur);
+                        if (pr == Rel_NONE)
+                            return false;
+                        //just ignore -ea because its no official release
+                        break;
+                    }
+                    else
+                    {
+                        return false;
+                    }
+                }
+                if (pCur < pEnd)
+                    pCur ++;
+                else
+                    break;
+            }
+        }
+    }
+    // 1.4.1-ea
+    else if (*(pCur - 1) == '-')
+    {
+        m_preRelease = getPreRelease(pCur);
+        if (m_preRelease == Rel_NONE)
+            return false;
+#if defined(FREEBSD)
+      if (m_preRelease == Rel_FreeBSD)
+      {
+          pCur++; //eliminate 'p'
+          if (pCur < pEnd
+              && rtl::isAsciiDigit(static_cast<unsigned char>(*pCur)))
+              pCur ++;
+          int len = pCur - pLast -1; //eliminate 'p'
+          if (len >= 127)
+              return false;
+          strncpy(buf, (pLast+1), len); //eliminate 'p'
+          buf[len] = 0;
+          m_nUpdateSpecial = atoi(buf)+100; //hack for FBSD #i56953#
+          return true;
+      }
+#endif
+    }
+    else
+    {
+        return false;
+    }
+    return true;
+}
+
+SunVersion::PreRelease SunVersion::getPreRelease(const char *szRelease)
+{
+    if (szRelease == nullptr)
+        return Rel_NONE;
+    if( ! strcmp(szRelease,"internal"))
+        return  Rel_INTERNAL;
+    else if( ! strcmp(szRelease,"ea"))
+        return  Rel_EA;
+    else if( ! strcmp(szRelease,"ea1"))
+        return Rel_EA1;
+    else if( ! strcmp(szRelease,"ea2"))
+        return Rel_EA2;
+    else if( ! strcmp(szRelease,"ea3"))
+        return Rel_EA3;
+    else if ( ! strcmp(szRelease,"beta"))
+        return Rel_BETA;
+    else if ( ! strcmp(szRelease,"beta1"))
+        return Rel_BETA1;
+    else if ( ! strcmp(szRelease,"beta2"))
+        return Rel_BETA2;
+    else if ( ! strcmp(szRelease,"beta3"))
+        return Rel_BETA3;
+    else if (! strcmp(szRelease, "rc"))
+        return Rel_RC;
+    else if (! strcmp(szRelease, "rc1"))
+        return Rel_RC1;
+    else if (! strcmp(szRelease, "rc2"))
+        return Rel_RC2;
+    else if (! strcmp(szRelease, "rc3"))
+        return Rel_RC3;
+#if defined (FREEBSD)
+    else if (! strncmp(szRelease, "p", 1))
+        return Rel_FreeBSD;
+#endif
+    else
+        return Rel_NONE;
+}
+
+/* Examples:
+   a) 1.0 < 1.1
+   b) 1.0 < 1.0.0
+   c)  1.0 < 1.0_00
+
+   returns false if both values are equal
+*/
+bool SunVersion::operator > (const SunVersion& ver) const
+{
+    if( &ver == this)
+        return false;
+
+    //compare major.minor.maintenance
+    for( int i= 0; i < 4; i ++)
+    {
+        // 1.4 > 1.3
+        if(m_arVersionParts[i] > ver.m_arVersionParts[i])
+        {
+            return true;
+        }
+        else if (m_arVersionParts[i] < ver.m_arVersionParts[i])
+        {
+            return false;
+        }
+    }
+    //major.minor.maintenance_update are equal. Test for a trailing char
+    if (m_nUpdateSpecial > ver.m_nUpdateSpecial)
+    {
+        return true;
+    }
+
+    //Until here the versions are equal
+    //compare pre -release values
+    if ((m_preRelease == Rel_NONE && ver.m_preRelease == Rel_NONE)
+        ||
+        (m_preRelease != Rel_NONE && ver.m_preRelease == Rel_NONE))
+        return false;
+    else if (m_preRelease == Rel_NONE && ver.m_preRelease != Rel_NONE)
+        return true;
+    else if (m_preRelease > ver.m_preRelease)
+        return true;
+
+    return false;
+}
+
+bool SunVersion::operator < (const SunVersion& ver) const
+{
+    return (! operator > (ver)) && (! operator == (ver));
+}
+
+bool SunVersion::operator == (const SunVersion& ver) const
+{
+    bool bRet= true;
+    for(int i= 0; i < 4; i++)
+    {
+        if( m_arVersionParts[i] != ver.m_arVersionParts[i])
+        {
+            bRet= false;
+            break;
+        }
+    }
+    bRet = m_nUpdateSpecial == ver.m_nUpdateSpecial && bRet;
+    bRet = m_preRelease == ver.m_preRelease && bRet;
+    return bRet;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/sunversion.hxx b/jvmfwk/plugins/sunmajor/pluginlib/sunversion.hxx
new file mode 100644
index 000000000..58173b74f
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/sunversion.hxx
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_SUNVERSION_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_SUNVERSION_HXX
+
+#include <sal/config.h>
+
+#include <string_view>
+
+namespace jfw_plugin
+{
+/* SunVersion is used to compare java versions based on a string, as taken
+   from the registry. The strings look like "1.3", "1.3.1", "1.3.1_02" etc.
+   Versions such as "1.4.1_01a" are allowed although this is not specified.
+   1.4.1_01 < 1.4.1_01a < 1.4.1_01b < 1.4.1_02
+   Pre - release versions, such as 1.4.1-ea, 1.4.1-beta, 1.4.1-rc are recognized,
+   but are treated as minor to release versions:
+   1.4.0 > 1.4.2-beta
+   Pre releases relate this way
+   1.4.1-ea < 1.4.1-beta < 1.4.1-rc1
+
+   This class supports also a FreeBSD Java. This is currently necessary because
+   it also has the vendor string "Sun Microsystems Inc.".
+
+   An object acts as holder for the version string. That string may be present
+   even if the version could not be parsed. Then the version may not be compatible
+   to a SUN Java version.
+
+   An invalid object, that is, operator bool returns false, will always be
+   the lower version in a comparison. If two invalid objects are compared
+   then they are considered equal.
+
+   To test if the version is ok, that is this object can be compared to others,
+   use the bool conversion operator.
+ */
+class SunVersion final
+{
+    enum PreRelease
+    {
+        Rel_NONE,
+        Rel_INTERNAL,
+        Rel_EA,
+        Rel_EA1,
+        Rel_EA2,
+        Rel_EA3,
+        Rel_BETA,
+        Rel_BETA1,
+        Rel_BETA2,
+        Rel_BETA3,
+        Rel_RC,
+        Rel_RC1,
+        Rel_RC2,
+        Rel_RC3
+#if defined(FREEBSD)
+        ,
+        Rel_FreeBSD
+#endif
+    };
+
+    //contains major,minor,micro,update
+    int m_arVersionParts[4] = {};
+    // The update can be followed by a char, e.g. 1.4.1_01a
+    char m_nUpdateSpecial;
+
+    PreRelease m_preRelease;
+
+public:
+    explicit SunVersion(const char* szVer);
+    explicit SunVersion(std::u16string_view usVer);
+
+    /**
+       Pre-release versions are taken into account.
+       1.5.0-beta > 1.5.0-ea > 1.4.2
+     */
+    bool operator>(const SunVersion& ver) const;
+    bool operator<(const SunVersion& ver) const;
+    bool operator==(const SunVersion& ver) const;
+
+    /** Test if the version is compatible tu SUN's versioning scheme
+     */
+    operator bool() { return m_bValid; }
+
+private:
+    bool init(const char* szVer);
+
+    bool m_bValid;
+
+    /* Determines if a string constitutes a pre release. For example, if
+       "ea" is passed then Rel_EA is returned. If the string is no pre release
+       then Rel_NONE is returned.
+    */
+    static PreRelease getPreRelease(const char* szRel);
+};
+}
+
+#endif // INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_SUNVERSION_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/util.cxx b/jvmfwk/plugins/sunmajor/pluginlib/util.cxx
new file mode 100644
index 000000000..6eb96d731
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/util.cxx
@@ -0,0 +1,1281 @@
+/* -*- 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 "util.hxx"
+
+#include <osl/process.h>
+#include <osl/file.hxx>
+#include <osl/module.hxx>
+#include <osl/diagnose.h>
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+#include <salhelper/linkhelper.hxx>
+#include <salhelper/thread.hxx>
+#include <o3tl/string_view.hxx>
+#include <memory>
+#include <utility>
+#include <algorithm>
+#include <map>
+#include <string_view>
+
+#if defined(_WIN32)
+#if !defined WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#endif
+#include <string.h>
+
+#include "sunjre.hxx"
+#include "vendorlist.hxx"
+#include "diagnostics.h"
+#if defined MACOSX && defined __x86_64__
+#include "util_cocoa.hxx"
+#endif
+
+using namespace osl;
+
+using ::rtl::Reference;
+
+#ifdef _WIN32
+#define HKEY_SUN_JRE L"Software\\JavaSoft\\Java Runtime Environment"
+#define HKEY_SUN_SDK L"Software\\JavaSoft\\Java Development Kit"
+#endif
+
+#if defined( UNX ) && !defined( MACOSX )
+namespace {
+char const *g_arJavaNames[] = {
+    "",
+    "j2re",
+    "j2se",
+    "j2sdk",
+    "jdk",
+    "jre",
+    "java"
+};
+
+/* These are directory names which could contain multiple java installations.
+ */
+char const *g_arCollectDirs[] = {
+    "",
+#ifndef JVM_ONE_PATH_CHECK
+    "j2re/",
+    "j2se/",
+    "j2sdk/",
+    "jdk/",
+    "jre/",
+    "java/",
+#endif
+    "jvm/"
+};
+
+/* These are directories in which a java installation is
+   looked for.
+*/
+char const *g_arSearchPaths[] = {
+#ifndef JVM_ONE_PATH_CHECK
+    "",
+    "usr/",
+    "usr/local/",
+#ifdef X86_64
+    "usr/lib64/",
+#endif
+    "usr/lib/",
+    "usr/bin/"
+#else
+    JVM_ONE_PATH_CHECK
+#endif
+};
+}
+#endif //  UNX && !MACOSX
+
+namespace jfw_plugin
+{
+#if defined(_WIN32)
+static bool getSDKInfoFromRegistry(std::vector<OUString> & vecHome);
+static bool getJREInfoFromRegistry(std::vector<OUString>& vecJavaHome);
+#endif
+
+static bool decodeOutput(std::string_view s, OUString* out);
+
+
+namespace
+{
+
+bool addJREInfo(
+    rtl::Reference<VendorBase> const & info,
+    std::vector<rtl::Reference<VendorBase>> & infos)
+{
+    if (std::none_of(infos.begin(), infos.end(), InfoFindSame(info->getHome()))) {
+        infos.push_back(info);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+bool getAndAddJREInfoByPath(
+    const OUString& path,
+    std::vector<rtl::Reference<VendorBase> > & allInfos,
+    std::vector<rtl::Reference<VendorBase> > & addedInfos)
+{
+    rtl::Reference<VendorBase> aInfo = getJREInfoByPath(path);
+    if (aInfo.is()) {
+        if (addJREInfo(aInfo, allInfos)) {
+            addedInfos.push_back(aInfo);
+        }
+        return true;
+    } else {
+        return false;
+    }
+}
+
+}
+
+namespace {
+
+class FileHandleGuard
+{
+public:
+    explicit FileHandleGuard(oslFileHandle & rHandle):
+        m_rHandle(rHandle) {}
+
+    inline ~FileHandleGuard();
+
+    FileHandleGuard(const FileHandleGuard&) = delete;
+    FileHandleGuard& operator=(const FileHandleGuard&) = delete;
+
+    oslFileHandle & getHandle() { return m_rHandle; }
+
+private:
+    oslFileHandle & m_rHandle;
+};
+
+}
+
+inline FileHandleGuard::~FileHandleGuard()
+{
+    if (m_rHandle != nullptr)
+    {
+        if (osl_closeFile(m_rHandle) != osl_File_E_None)
+        {
+            OSL_FAIL("unexpected situation");
+        }
+    }
+}
+
+namespace {
+
+class FileHandleReader
+{
+public:
+    enum Result
+    {
+        RESULT_OK,
+        RESULT_EOF,
+        RESULT_ERROR
+    };
+
+    explicit FileHandleReader(oslFileHandle & rHandle):
+        m_aGuard(rHandle), m_nSize(0), m_nIndex(0), m_bLf(false) {}
+
+    Result readLine(OString * pLine);
+
+private:
+    enum { BUFFER_SIZE = 1024 };
+
+    char m_aBuffer[BUFFER_SIZE];
+    FileHandleGuard m_aGuard;
+    int m_nSize;
+    int m_nIndex;
+    bool m_bLf;
+};
+
+}
+
+FileHandleReader::Result
+FileHandleReader::readLine(OString * pLine)
+{
+    OSL_ENSURE(pLine, "specification violation");
+
+    for (bool bEof = true;; bEof = false)
+    {
+        if (m_nIndex == m_nSize)
+        {
+            sal_uInt64 nRead = 0;
+            switch (osl_readFile(
+                        m_aGuard.getHandle(), m_aBuffer, sizeof(m_aBuffer), &nRead))
+            {
+            case osl_File_E_PIPE: //HACK! for windows
+                nRead = 0;
+                [[fallthrough]];
+            case osl_File_E_None:
+                if (nRead == 0)
+                {
+                    m_bLf = false;
+                    return bEof ? RESULT_EOF : RESULT_OK;
+                }
+                m_nIndex = 0;
+                m_nSize = static_cast< int >(nRead);
+                break;
+            case osl_File_E_INTR:
+                continue;
+
+            default:
+                return RESULT_ERROR;
+            }
+        }
+
+        if (m_bLf && m_aBuffer[m_nIndex] == 0x0A)
+            ++m_nIndex;
+        m_bLf = false;
+
+        int nStart = m_nIndex;
+        while (m_nIndex != m_nSize)
+            switch (m_aBuffer[m_nIndex++])
+            {
+            case 0x0D:
+                m_bLf = true;
+                [[fallthrough]];
+            case 0x0A:
+                *pLine += std::string_view(m_aBuffer + nStart,
+                                       m_nIndex - 1 - nStart);
+                    //TODO! check for overflow, and not very efficient
+                return RESULT_OK;
+            }
+
+        *pLine += std::string_view(m_aBuffer + nStart, m_nIndex - nStart);
+            //TODO! check for overflow, and not very efficient
+    }
+}
+
+namespace {
+
+class AsynchReader: public salhelper::Thread
+{
+    size_t  m_nDataSize;
+    std::unique_ptr<char[]> m_arData;
+
+    FileHandleGuard m_aGuard;
+
+    virtual ~AsynchReader() override {}
+
+    void execute() override;
+public:
+
+    explicit AsynchReader(oslFileHandle & rHandle);
+
+    /** only call this function after this thread has finished.
+
+        That is, call join on this instance and then call getData.
+
+     */
+    OString getData();
+};
+
+}
+
+AsynchReader::AsynchReader(oslFileHandle & rHandle):
+    Thread("jvmfwkAsyncReader"), m_nDataSize(0),
+    m_aGuard(rHandle)
+{
+}
+
+OString AsynchReader::getData()
+{
+    return OString(m_arData.get(), m_nDataSize);
+}
+
+void AsynchReader::execute()
+{
+    const sal_uInt64 BUFFER_SIZE = 4096;
+    char aBuffer[BUFFER_SIZE];
+    while (true)
+    {
+        sal_uInt64 nRead;
+        //the function blocks until something could be read or the pipe closed.
+        switch (osl_readFile(
+                    m_aGuard.getHandle(), aBuffer, BUFFER_SIZE, &nRead))
+        {
+        case osl_File_E_PIPE: //HACK! for windows
+            nRead = 0;
+            [[fallthrough]];
+        case osl_File_E_None:
+            break;
+        default:
+            return;
+        }
+
+        if (nRead == 0)
+        {
+            break;
+        }
+        else if (nRead <= BUFFER_SIZE)
+        {
+            //Save the data we have in m_arData into a temporary array
+            std::unique_ptr<char[]> arTmp( new char[m_nDataSize]);
+            if (m_nDataSize != 0) {
+                memcpy(arTmp.get(), m_arData.get(), m_nDataSize);
+            }
+            //Enlarge m_arData to hold the newly read data
+            m_arData.reset(new char[static_cast<size_t>(m_nDataSize + nRead)]);
+            //Copy back the data that was already in m_arData
+            memcpy(m_arData.get(), arTmp.get(), m_nDataSize);
+            //Add the newly read data to m_arData
+            memcpy(m_arData.get() + m_nDataSize, aBuffer, static_cast<size_t>(nRead));
+            m_nDataSize += static_cast<size_t>(nRead);
+        }
+    }
+}
+
+bool getJavaProps(const OUString & exePath,
+#ifdef JVM_ONE_PATH_CHECK
+                  const OUString & homePath,
+#endif
+                  std::vector<std::pair<OUString, OUString> >& props,
+                  bool * bProcessRun)
+{
+    bool ret = false;
+
+    OSL_ASSERT(!exePath.isEmpty());
+    OUString usStartDir;
+    //We need to set the CLASSPATH in case the office is started from
+    //a different directory. The JREProperties.class is expected to reside
+    //next to the plugin, except on macOS where it is in ../Resources/java relative
+    //to the plugin.
+    OUString sThisLib;
+    if (!osl_getModuleURLFromAddress(reinterpret_cast<void *>(&getJavaProps),
+                                     & sThisLib.pData))
+    {
+        return false;
+    }
+    sThisLib = getDirFromFile(sThisLib);
+    OUString sClassPath;
+    if (osl_getSystemPathFromFileURL(sThisLib.pData, & sClassPath.pData)
+        != osl_File_E_None)
+    {
+        return false;
+    }
+
+#ifdef MACOSX
+#if defined __x86_64__
+    if (!JvmfwkUtil_isLoadableJVM(exePath))
+        return false;
+#endif
+    if (sClassPath.endsWith("/"))
+        sClassPath += "../Resources/java/";
+    else
+        sClassPath += "/../Resources/java";
+#endif
+
+    //prepare the arguments
+    sal_Int32 const cArgs = 3;
+    OUString arg1 = "-classpath";// + sClassPath;
+    OUString arg2 = sClassPath;
+    OUString arg3("JREProperties");
+    rtl_uString *args[cArgs] = {arg1.pData, arg2.pData, arg3.pData};
+
+    oslProcess javaProcess= nullptr;
+    oslFileHandle fileOut= nullptr;
+    oslFileHandle fileErr= nullptr;
+
+    FileHandleReader stdoutReader(fileOut);
+    rtl::Reference< AsynchReader > stderrReader(new AsynchReader(fileErr));
+
+    JFW_TRACE2("Executing: " + exePath);
+    oslProcessError procErr =
+        osl_executeProcess_WithRedirectedIO( exePath.pData,//usExe.pData,
+                                             args,
+                                             cArgs,                 //sal_uInt32   nArguments,
+                                             osl_Process_HIDDEN, //oslProcessOption Options,
+                                             nullptr, //oslSecurity Security,
+                                             usStartDir.pData,//usStartDir.pData,//usWorkDir.pData, //rtl_uString *strWorkDir,
+                                             nullptr, //rtl_uString *strEnvironment[],
+                                             0, //  sal_uInt32   nEnvironmentVars,
+                                             &javaProcess, //oslProcess *pProcess,
+                                             nullptr,//oslFileHandle *pChildInputWrite,
+                                             &fileOut,//oslFileHandle *pChildOutputRead,
+                                             &fileErr);//oslFileHandle *pChildErrorRead);
+
+    if( procErr != osl_Process_E_None)
+    {
+        JFW_TRACE2("Execution failed");
+        *bProcessRun = false;
+        SAL_WARN("jfw",
+            "osl_executeProcess failed (" << ret << "): \"" << exePath << "\"");
+        return ret;
+    }
+    else
+    {
+        JFW_TRACE2("Java executed successfully");
+        *bProcessRun = true;
+    }
+
+    //Start asynchronous reading (different thread) of error stream
+    stderrReader->launch();
+
+    //Use this thread to read output stream
+    FileHandleReader::Result rs = FileHandleReader::RESULT_OK;
+    JFW_TRACE2("Properties found:");
+    while (true)
+    {
+        OString aLine;
+        rs = stdoutReader.readLine( & aLine);
+        if (rs != FileHandleReader::RESULT_OK)
+            break;
+        OUString sLine;
+        if (!decodeOutput(aLine, &sLine))
+            continue;
+        JFW_TRACE2("  \"" << sLine << "\"");
+        sLine = sLine.trim();
+        if (sLine.isEmpty())
+            continue;
+        //The JREProperties class writes key value pairs, separated by '='
+        sal_Int32 index = sLine.indexOf('=');
+        OSL_ASSERT(index != -1);
+        OUString sKey = sLine.copy(0, index);
+        OUString sVal = sLine.copy(index + 1);
+
+#ifdef JVM_ONE_PATH_CHECK
+        //replace absolute path by linux distro link
+        OUString sHomeProperty("java.home");
+        if(sHomeProperty.equals(sKey))
+        {
+            sVal = homePath + "/jre";
+        }
+#endif
+
+        props.emplace_back(sKey, sVal);
+    }
+
+    if (rs != FileHandleReader::RESULT_ERROR && !props.empty())
+        ret = true;
+
+    //process error stream data
+    stderrReader->join();
+    JFW_TRACE2("Java wrote to stderr:\" "
+               << stderrReader->getData() << " \"");
+
+    TimeValue waitMax= {5 ,0};
+    procErr = osl_joinProcessWithTimeout(javaProcess, &waitMax);
+    OSL_ASSERT(procErr == osl_Process_E_None);
+    osl_freeProcessHandle(javaProcess);
+    return ret;
+}
+
+/* converts the properties printed by JREProperties.class into
+    readable strings. The strings are encoded as integer values separated
+    by spaces.
+ */
+bool decodeOutput(std::string_view s, OUString* out)
+{
+    OSL_ASSERT(out != nullptr);
+    OUStringBuffer buff(512);
+    sal_Int32 nIndex = 0;
+    do
+    {
+        std::string_view aToken = o3tl::getToken(s, 0, ' ', nIndex );
+        if (!aToken.empty())
+        {
+            for (size_t i = 0; i < aToken.size(); ++i)
+            {
+                if (aToken[i] < '0' || aToken[i] > '9')
+                    return false;
+            }
+            sal_Unicode value = static_cast<sal_Unicode>(o3tl::toInt32(aToken));
+            buff.append(value);
+        }
+    } while (nIndex >= 0);
+
+    *out = buff.makeStringAndClear();
+    return true;
+}
+
+
+#if defined(_WIN32)
+
+static bool getJavaInfoFromRegistry(const wchar_t* szRegKey,
+                             std::vector<OUString>& vecJavaHome)
+{
+    HKEY    hRoot;
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, szRegKey, 0, KEY_ENUMERATE_SUB_KEYS, &hRoot)
+        == ERROR_SUCCESS)
+    {
+        DWORD dwIndex = 0;
+        const DWORD BUFFSIZE = 1024;
+        wchar_t bufVersion[BUFFSIZE];
+        FILETIME fileTime;
+        DWORD nNameLen = sizeof(bufVersion);
+
+        // Iterate over all subkeys of HKEY_LOCAL_MACHINE\Software\JavaSoft\Java Runtime Environment
+        while (RegEnumKeyExW(hRoot, dwIndex, bufVersion, &nNameLen, nullptr, nullptr, nullptr, &fileTime) != ERROR_NO_MORE_ITEMS)
+        {
+            HKEY    hKey;
+            // Open a Java Runtime Environment sub key, e.g. "1.4.0"
+            if (RegOpenKeyExW(hRoot, bufVersion, 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
+            {
+                DWORD   dwType;
+                DWORD   dwTmpPathLen= 0;
+                // Get the path to the JavaHome every JRE entry
+                // Find out how long the string for JavaHome is and allocate memory to hold the path
+                if( RegQueryValueExW(hKey, L"JavaHome", nullptr, &dwType, nullptr, &dwTmpPathLen)== ERROR_SUCCESS)
+                {
+                    unsigned char* szTmpPath= static_cast<unsigned char *>(malloc(dwTmpPathLen+sizeof(sal_Unicode)));
+                    // According to https://msdn.microsoft.com/en-us/ms724911, the application should ensure
+                    // that the string is properly terminated before using it
+                    for (DWORD i = 0; i < sizeof(sal_Unicode); ++i)
+                        szTmpPath[dwTmpPathLen + i] = 0;
+                    // Get the path for the runtime lib
+                    if(RegQueryValueExW(hKey, L"JavaHome", nullptr, &dwType, szTmpPath, &dwTmpPathLen) == ERROR_SUCCESS)
+                    {
+                        // There can be several version entries referring with the same JavaHome,e.g 1.4 and 1.4.1
+                        OUString usHome(reinterpret_cast<sal_Unicode*>(szTmpPath));
+                        // check if there is already an entry with the same JavaHomeruntime lib
+                        // if so, we use the one with the more accurate version
+                        OUString usHomeUrl;
+                        if (osl_getFileURLFromSystemPath(usHome.pData, & usHomeUrl.pData) ==
+                            osl_File_E_None)
+                        {
+                            bool bAppend= true;
+                            //iterate over the vector with java home strings
+                            for (auto const& javaHome : vecJavaHome)
+                            {
+                                if(usHomeUrl.equals(javaHome))
+                                {
+                                    bAppend= false;
+                                    break;
+                                }
+                            }
+                            // Save the home dir
+                            if(bAppend)
+                            {
+                                vecJavaHome.push_back(usHomeUrl);
+                            }
+                        }
+                    }
+                    free( szTmpPath);
+                    RegCloseKey(hKey);
+                }
+            }
+            dwIndex ++;
+            nNameLen = BUFFSIZE;
+        }
+        RegCloseKey(hRoot);
+    }
+    return true;
+}
+
+
+bool getSDKInfoFromRegistry(std::vector<OUString> & vecHome)
+{
+    return getJavaInfoFromRegistry(HKEY_SUN_SDK, vecHome);
+}
+
+bool getJREInfoFromRegistry(std::vector<OUString>& vecJavaHome)
+{
+    return getJavaInfoFromRegistry(HKEY_SUN_JRE, vecJavaHome);
+}
+
+static void addJavaInfoFromWinReg(
+    std::vector<rtl::Reference<VendorBase> > & allInfos,
+    std::vector<rtl::Reference<VendorBase> > & addedInfos)
+{
+        // Get Java s from registry
+    std::vector<OUString> vecJavaHome;
+    if(getSDKInfoFromRegistry(vecJavaHome))
+    {
+        // create impl objects
+        for (auto const& javaHome : vecJavaHome)
+        {
+            getAndAddJREInfoByPath(javaHome, allInfos, addedInfos);
+        }
+    }
+
+    vecJavaHome.clear();
+    if(getJREInfoFromRegistry(vecJavaHome))
+    {
+        for (auto const& javaHome : vecJavaHome)
+        {
+            getAndAddJREInfoByPath(javaHome, allInfos, addedInfos);
+        }
+    }
+
+    vecJavaHome.clear();
+    if (getJavaInfoFromRegistry(L"Software\\JavaSoft\\JDK", vecJavaHome)) {
+        for (auto const & javaHome: vecJavaHome) {
+            getAndAddJREInfoByPath(javaHome, allInfos, addedInfos);
+        }
+    }
+
+    vecJavaHome.clear();
+    if (getJavaInfoFromRegistry(L"Software\\JavaSoft\\JRE", vecJavaHome)) {
+        for (auto const & javaHome: vecJavaHome) {
+            getAndAddJREInfoByPath(javaHome, allInfos, addedInfos);
+        }
+    }
+}
+
+#endif // _WIN32
+
+void bubbleSortVersion(std::vector<rtl::Reference<VendorBase> >& vec)
+{
+    if(vec.empty())
+        return;
+    int size= vec.size() - 1;
+    int cIter= 0;
+    // sort for version
+    for(int i= 0; i < size; i++)
+    {
+        for(int j= size; j > 0 + cIter; j--)
+        {
+            rtl::Reference<VendorBase>& cur= vec.at(j);
+            rtl::Reference<VendorBase>& next= vec.at(j-1);
+
+            int nCmp = 0;
+            // comparing invalid SunVersion s is possible, they will be less than a
+            // valid version
+
+            //check if version of current is recognized, by comparing it with itself
+            try
+            {
+                (void)cur->compareVersions(cur->getVersion());
+            }
+            catch (MalformedVersionException &)
+            {
+                nCmp = -1; // current < next
+            }
+            //The version of cur is valid, now compare with the second version
+            if (nCmp == 0)
+            {
+                try
+                {
+                    nCmp = cur->compareVersions(next->getVersion());
+                }
+                catch (MalformedVersionException & )
+                {
+                    //The second version is invalid, therefore it regards less.
+                    nCmp = 1;
+                }
+            }
+            if(nCmp == 1) // cur > next
+            {
+                std::swap(cur, next);
+            }
+        }
+        ++cIter;
+    }
+}
+
+
+void addJREInfoFromBinPath(
+    const OUString& path, std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos)
+{
+    // file:///c:/jre/bin
+    //map:       jre/bin/java.exe
+
+    for ( sal_Int32 pos = 0;
+          gVendorMap[pos].sVendorName != nullptr; ++pos )
+    {
+        std::vector<OUString> vecPaths;
+        getJavaExePaths_func pFunc = gVendorMap[pos].getJavaFunc;
+
+        int size = 0;
+        char const* const* arExePaths = (*pFunc)(&size);
+        vecPaths = getVectorFromCharArray(arExePaths, size);
+
+        //make sure argument path does not end with '/'
+        OUString sBinPath = path;
+        if (path.endsWith("/"))
+            sBinPath = path.copy(0, path.getLength() - 1);
+
+        for (auto const& looppath : vecPaths)
+        {
+            //the map contains e.g. jre/bin/java.exe
+            //get the directory where the executable is contained
+            OUString sHome;
+            sal_Int32 index = looppath.lastIndexOf('/');
+            if (index == -1)
+            {
+                //map contained only : "java.exe, then the argument
+                //path is already the home directory
+                sHome = sBinPath;
+            }
+            else
+            {
+                // jre/bin/jre -> jre/bin
+                OUString sMapPath = looppath.copy(0, index);
+                index = sBinPath.lastIndexOf(sMapPath);
+                if (index != -1
+                    && (index + sMapPath.getLength() == sBinPath.getLength())
+                    && sBinPath[index - 1] == '/')
+                {
+                    sHome = sBinPath.copy(index - 1);
+                }
+            }
+            if (!sHome.isEmpty()
+                && getAndAddJREInfoByPath(path, allInfos, addedInfos))
+            {
+                return;
+            }
+        }
+    }
+}
+
+std::vector<Reference<VendorBase> > addAllJREInfos(
+    bool checkJavaHomeAndPath,
+    std::vector<rtl::Reference<VendorBase>> & allInfos)
+{
+    std::vector<Reference<VendorBase> > addedInfos;
+
+#if defined(_WIN32)
+    // Get Javas from the registry
+    addJavaInfoFromWinReg(allInfos, addedInfos);
+#endif // _WIN32
+
+    if (checkJavaHomeAndPath) {
+        addJavaInfoFromJavaHome(allInfos, addedInfos);
+        //this function should be called after addJavaInfosDirScan.
+        //Otherwise in SDKs Java may be started twice
+        addJavaInfosFromPath(allInfos, addedInfos);
+    }
+
+#ifdef UNX
+    addJavaInfosDirScan(allInfos, addedInfos);
+#endif
+
+    bubbleSortVersion(addedInfos);
+    return addedInfos;
+}
+
+
+std::vector<OUString> getVectorFromCharArray(char const * const * ar, int size)
+{
+    std::vector<OUString> vec;
+    for( int i = 0; i < size; i++)
+    {
+        OUString s(ar[i], strlen(ar[i]), RTL_TEXTENCODING_UTF8);
+        vec.push_back(s);
+    }
+    return vec;
+}
+
+/** Checks if the path is a directory. Links are resolved.
+    In case of an error the returned string has the length 0.
+    Otherwise the returned string is the "resolved" file URL.
+ */
+static OUString resolveDirPath(const OUString & path)
+{
+    OUString ret;
+    salhelper::LinkResolver aResolver(osl_FileStatus_Mask_Type |
+                                       osl_FileStatus_Mask_FileURL);
+    if (aResolver.fetchFileStatus(path) == osl::FileBase::E_None)
+    {
+        //check if this is a directory
+        if (aResolver.m_aStatus.getFileType() == FileStatus::Directory)
+        {
+#ifndef JVM_ONE_PATH_CHECK
+            ret = aResolver.m_aStatus.getFileURL();
+#else
+            ret = path;
+#endif
+        }
+    }
+    return ret;
+}
+/** Checks if the path is a file. If it is a link to a file than
+    it is resolved.
+ */
+static OUString resolveFilePath(const OUString & path)
+{
+    OUString ret;
+    salhelper::LinkResolver aResolver(osl_FileStatus_Mask_Type |
+                                       osl_FileStatus_Mask_FileURL);
+    if (aResolver.fetchFileStatus(path) == osl::FileBase::E_None)
+    {
+        //check if this is a file
+        if (aResolver.m_aStatus.getFileType() == FileStatus::Regular)
+        {
+#ifndef JVM_ONE_PATH_CHECK
+            ret = aResolver.m_aStatus.getFileURL();
+#else
+            ret = path;
+#endif
+        }
+    }
+    return ret;
+}
+
+rtl::Reference<VendorBase> getJREInfoByPath(
+    const OUString& path)
+{
+    rtl::Reference<VendorBase> ret;
+    static std::vector<OUString> vecBadPaths;
+
+    static std::map<OUString, rtl::Reference<VendorBase> > mapJREs;
+    OUString sFilePath;
+    std::vector<std::pair<OUString, OUString> > props;
+
+    OUString sResolvedDir = resolveDirPath(path);
+    // If this path is invalid then there is no chance to find a JRE here
+    if (sResolvedDir.isEmpty())
+    {
+        return nullptr;
+    }
+
+    //check if the directory path is good, that is a JRE was already recognized.
+    //Then we need not detect it again
+    //For example, a sun JDK contains <jdk>/bin/java and <jdk>/jre/bin/java.
+    //When <jdk>/bin/java has been found then we need not find <jdk>/jre/bin/java.
+    //Otherwise we would execute java two times for every JDK found.
+    auto entry2 = find_if(mapJREs.cbegin(), mapJREs.cend(),
+                           SameOrSubDirJREMap(sResolvedDir));
+    if (entry2 != mapJREs.end())
+    {
+        JFW_TRACE2("JRE found again (detected before): " << sResolvedDir);
+        return entry2->second;
+    }
+
+    for ( sal_Int32 pos = 0;
+          gVendorMap[pos].sVendorName != nullptr; ++pos )
+    {
+        std::vector<OUString> vecPaths;
+        getJavaExePaths_func pFunc = gVendorMap[pos].getJavaFunc;
+
+        int size = 0;
+        char const* const* arExePaths = (*pFunc)(&size);
+        vecPaths = getVectorFromCharArray(arExePaths, size);
+
+        bool bBreak = false;
+        for (auto const& looppath : vecPaths)
+        {
+            //if the path is a link, then resolve it
+            //check if the executable exists at all
+
+            //path can be only "file:///". Then do not append a '/'
+            //sizeof counts the terminating 0
+            OUString sFullPath;
+            if (path.getLength() == sizeof("file:///") - 1)
+                sFullPath = sResolvedDir + looppath;
+            else
+                sFullPath = sResolvedDir + "/" + looppath;
+
+            sFilePath = resolveFilePath(sFullPath);
+
+            if (sFilePath.isEmpty())
+            {
+                //The file path (to java exe) is not valid
+                auto ifull = find(vecBadPaths.cbegin(), vecBadPaths.cend(), sFullPath);
+                if (ifull == vecBadPaths.cend())
+                {
+                    vecBadPaths.push_back(sFullPath);
+                }
+                continue;
+            }
+
+            auto ifile = find(vecBadPaths.cbegin(), vecBadPaths.cend(), sFilePath);
+            if (ifile != vecBadPaths.cend())
+            {
+                continue;
+            }
+
+            auto entry =  mapJREs.find(sFilePath);
+            if (entry != mapJREs.end())
+            {
+                JFW_TRACE2("JRE found again (detected before): " << sFilePath);
+
+                return entry->second;
+            }
+
+            bool bProcessRun= false;
+            if (!getJavaProps(sFilePath,
+#ifdef JVM_ONE_PATH_CHECK
+                             sResolvedDir,
+#endif
+                             props, & bProcessRun))
+            {
+                //The java executable could not be run or the system properties
+                //could not be retrieved. We can assume that this java is corrupt.
+                vecBadPaths.push_back(sFilePath);
+                //If there was a java executable, that could be run but we did not get
+                //the system properties, then we also assume that the whole Java installation
+                //does not work. In a jdk there are two executables. One in jdk/bin and the other
+                //in jdk/jre/bin. We do not search any further, because we assume that if one java
+                //does not work then the other does not work as well. This saves us to run java
+                //again which is quite costly.
+                if (bProcessRun)
+                {
+                    // 1.3.1 special treatment: jdk/bin/java and /jdk/jre/bin/java are links to
+                    //a script, named .java_wrapper. The script starts jdk/bin/sparc/native_threads/java
+                    //or jdk/jre/bin/sparc/native_threads/java. The script uses the name with which it was
+                    //invoked to build the path to the executable. It we start the script directly as .java_wrapper
+                    //then it tries to start a jdk/.../native_threads/.java_wrapper. Therefore the link, which
+                    //is named java, must be used to start the script.
+                    getJavaProps(sFullPath,
+#ifdef JVM_ONE_PATH_CHECK
+                                 sResolvedDir,
+#endif
+                                 props, & bProcessRun);
+                    // Either we found a working 1.3.1
+                    // Or the java is broken. In both cases we stop searching under this "root" directory
+                    bBreak = true;
+                    break;
+                }
+                //sFilePath is no working java executable. We continue with another possible
+                //path.
+                else
+                {
+                    continue;
+                }
+            }
+            //sFilePath is a java and we could get the system properties. We proceed with this
+            //java.
+            else
+            {
+                bBreak = true;
+                break;
+            }
+        }
+        if (bBreak)
+            break;
+    }
+
+    if (props.empty())
+    {
+        return rtl::Reference<VendorBase>();
+    }
+
+    //find java.vendor property
+    OUString sVendorName;
+
+    for (auto const& prop : props)
+    {
+        if (prop.first == "java.vendor")
+        {
+            sVendorName = prop.second;
+            break;
+        }
+    }
+
+    auto knownVendor = false;
+    if (!sVendorName.isEmpty())
+    {
+        //find the creator func for the respective vendor name
+        for ( sal_Int32 c = 0;
+              gVendorMap[c].sVendorName != nullptr; ++c )
+        {
+            OUString sNameMap(gVendorMap[c].sVendorName, strlen(gVendorMap[c].sVendorName),
+                              RTL_TEXTENCODING_ASCII_US);
+            if (sNameMap == sVendorName)
+            {
+                ret = createInstance(gVendorMap[c].createFunc, props);
+                knownVendor = true;
+                break;
+            }
+        }
+    }
+    // For unknown vendors, try SunInfo as fallback:
+    if (!knownVendor)
+    {
+        ret = createInstance(SunInfo::createInstance, props);
+    }
+    if (!ret.is())
+    {
+        vecBadPaths.push_back(sFilePath);
+    }
+    else
+    {
+        JFW_TRACE2("Found JRE: " << sResolvedDir << " at: " << path);
+
+        mapJREs.emplace(sResolvedDir, ret);
+        mapJREs.emplace(sFilePath, ret);
+    }
+
+    return ret;
+}
+
+Reference<VendorBase> createInstance(createInstance_func pFunc,
+                                     const std::vector<std::pair<OUString, OUString> >& properties)
+{
+
+    Reference<VendorBase> aBase = (*pFunc)();
+    if (aBase.is())
+    {
+        if (!aBase->initialize(properties))
+            aBase = nullptr;
+    }
+    return aBase;
+}
+
+inline OUString getDirFromFile(std::u16string_view usFilePath)
+{
+    size_t index = usFilePath.rfind('/');
+    return OUString(usFilePath.substr(0, index));
+}
+
+void addJavaInfosFromPath(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos)
+{
+#if !defined JVM_ONE_PATH_CHECK
+// Get Java from PATH environment variable
+    char *szPath= getenv("PATH");
+    if(!szPath)
+        return;
+
+    OUString usAllPath(szPath, strlen(szPath), osl_getThreadTextEncoding());
+    sal_Int32 nIndex = 0;
+    do
+    {
+        OUString usToken( usAllPath.getToken( 0, SAL_PATHSEPARATOR, nIndex ) );
+        OUString usTokenUrl;
+        if(File::getFileURLFromSystemPath(usToken, usTokenUrl) == File::E_None)
+        {
+            if(!usTokenUrl.isEmpty())
+            {
+                OUString usBin;
+                if(usTokenUrl == ".")
+                {
+                    OUString usWorkDirUrl;
+                    if(osl_Process_E_None == osl_getProcessWorkingDir(&usWorkDirUrl.pData))
+                        usBin= usWorkDirUrl;
+                }
+                else if(usTokenUrl == "..")
+                {
+                    OUString usWorkDir;
+                    if(osl_Process_E_None == osl_getProcessWorkingDir(&usWorkDir.pData))
+                        usBin= getDirFromFile(usWorkDir);
+                }
+                else
+                {
+                    usBin = usTokenUrl;
+                }
+                if(!usBin.isEmpty())
+                {
+                    addJREInfoFromBinPath(usBin, allInfos, addedInfos);
+                }
+            }
+        }
+    }
+    while ( nIndex >= 0 );
+#endif
+}
+
+
+void addJavaInfoFromJavaHome(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos)
+{
+#if !defined JVM_ONE_PATH_CHECK
+    // Get Java from JAVA_HOME environment
+
+    // Note that on macOS is it not normal at all to have a JAVA_HOME environment
+    // variable. We set it in our build environment for build-time programs, though,
+    // so it is set when running unit tests that involve Java functionality. (Which affects
+    // at least CppunitTest_dbaccess_dialog_save, too, and not only the JunitTest ones.)
+    char *szJavaHome= getenv("JAVA_HOME");
+    if(szJavaHome)
+    {
+        OUString sHome(szJavaHome, strlen(szJavaHome), osl_getThreadTextEncoding());
+        OUString sHomeUrl;
+        if(File::getFileURLFromSystemPath(sHome, sHomeUrl) == File::E_None)
+        {
+            getAndAddJREInfoByPath(sHomeUrl, allInfos, addedInfos);
+        }
+    }
+#endif
+}
+
+bool makeDriveLetterSame(OUString * fileURL)
+{
+    bool ret = false;
+    DirectoryItem item;
+    if (DirectoryItem::get(*fileURL, item) == File::E_None)
+    {
+        FileStatus status(osl_FileStatus_Mask_FileURL);
+        if (item.getFileStatus(status) == File::E_None)
+        {
+            *fileURL = status.getFileURL();
+            ret = true;
+        }
+    }
+    return ret;
+}
+
+#ifdef UNX
+#ifdef __sun
+
+void addJavaInfosDirScan(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos)
+{
+    JFW_TRACE2("Checking /usr/jdk/latest");
+    getAndAddJREInfoByPath("file:////usr/jdk/latest", allInfos, addedInfos);
+}
+
+#else
+void addJavaInfosDirScan(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos)
+{
+#ifdef MACOSX
+    // Ignore all but Oracle's JDK as loading Apple's Java and Oracle's JRE
+    // will cause macOS's JavaVM framework to display a dialog and invoke
+    // exit() when loaded via JNI on macOS 10.10
+    Directory aDir("file:///Library/Java/JavaVirtualMachines");
+    if (aDir.open() == File::E_None)
+    {
+        DirectoryItem aItem;
+        while (aDir.getNextItem(aItem) == File::E_None)
+        {
+            FileStatus aStatus(osl_FileStatus_Mask_FileURL);
+            if (aItem.getFileStatus(aStatus) == File::E_None)
+            {
+                OUString aItemURL( aStatus.getFileURL() );
+                if (aItemURL.getLength())
+                {
+                    aItemURL += "/Contents/Home";
+                    if (DirectoryItem::get(aItemURL, aItem) == File::E_None)
+                        getAndAddJREInfoByPath(aItemURL, allInfos, addedInfos);
+                }
+            }
+        }
+        aDir.close();
+    }
+#else // MACOSX
+    OUString excMessage = "[Java framework] sunjavaplugin: "
+                          "Error in function addJavaInfosDirScan in util.cxx.";
+    int cJavaNames= SAL_N_ELEMENTS(g_arJavaNames);
+    std::unique_ptr<OUString[]> sarJavaNames(new OUString[cJavaNames]);
+    OUString *arNames = sarJavaNames.get();
+    for(int i= 0; i < cJavaNames; i++)
+        arNames[i] = OUString(g_arJavaNames[i], strlen(g_arJavaNames[i]),
+                              RTL_TEXTENCODING_UTF8);
+
+    int cSearchPaths= SAL_N_ELEMENTS(g_arSearchPaths);
+    std::unique_ptr<OUString[]> sarPathNames(new OUString[cSearchPaths]);
+    OUString *arPaths = sarPathNames.get();
+    for(int c = 0; c < cSearchPaths; c++)
+        arPaths[c] = OUString(g_arSearchPaths[c], strlen(g_arSearchPaths[c]),
+                               RTL_TEXTENCODING_UTF8);
+
+    int cCollectDirs = SAL_N_ELEMENTS(g_arCollectDirs);
+    std::unique_ptr<OUString[]> sarCollectDirs(new OUString[cCollectDirs]);
+    OUString *arCollectDirs = sarCollectDirs.get();
+    for(int d = 0; d < cCollectDirs; d++)
+        arCollectDirs[d] = OUString(g_arCollectDirs[d], strlen(g_arCollectDirs[d]),
+                               RTL_TEXTENCODING_UTF8);
+
+
+    for( int ii = 0; ii < cSearchPaths; ii ++)
+    {
+        OUString usDir1("file:///" + arPaths[ii]);
+        DirectoryItem item;
+        if(DirectoryItem::get(usDir1, item) == File::E_None)
+        {
+            for(int j= 0; j < cCollectDirs; j++)
+            {
+                OUString usDir2(usDir1 + arCollectDirs[j]);
+                // prevent that we scan the whole /usr, /usr/lib, etc directories
+                if (!arCollectDirs[j].isEmpty())
+                {
+                    //usr/java/xxx
+                    //Examining every subdirectory
+                    Directory aCollectionDir(usDir2);
+
+                    Directory::RC openErr = aCollectionDir.open();
+                    switch (openErr)
+                    {
+                    case File::E_None:
+                        break;
+                    case File::E_NOENT:
+                    case File::E_NOTDIR:
+                        continue;
+                    case File::E_ACCES:
+                        JFW_TRACE2("Could not read directory " << usDir2 << " because of missing access rights");
+                        continue;
+                    default:
+                        JFW_TRACE2("Could not read directory " << usDir2 << ". Osl file error: " << openErr);
+                        continue;
+                    }
+
+                    DirectoryItem curIt;
+                    File::RC errNext = File::E_None;
+                    while( (errNext = aCollectionDir.getNextItem(curIt)) == File::E_None)
+                    {
+                        FileStatus aStatus(osl_FileStatus_Mask_FileURL);
+                        File::RC errStatus = File::E_None;
+                        if ((errStatus = curIt.getFileStatus(aStatus)) != File::E_None)
+                        {
+                            JFW_TRACE2(excMessage + "getFileStatus failed with error " << errStatus);
+                            continue;
+                        }
+                        JFW_TRACE2("Checking if directory: " << aStatus.getFileURL() << " is a Java");
+
+                        getAndAddJREInfoByPath(
+                            aStatus.getFileURL(), allInfos, addedInfos);
+                    }
+
+                    JFW_ENSURE(errNext == File::E_None || errNext == File::E_NOENT,
+                                "[Java framework] sunjavaplugin: "
+                                "Error while iterating over contents of "
+                                + usDir2 + ". Osl file error: "
+                                + OUString::number(openErr));
+                }
+                else
+                {
+                    //usr/java
+                    //When we look directly into a dir like /usr, /usr/lib, etc. then we only
+                    //look for certain java directories, such as jre, jdk, etc. We do not want
+                    //to examine the whole directory because of performance reasons.
+                    DirectoryItem item2;
+                    if(DirectoryItem::get(usDir2, item2) == File::E_None)
+                    {
+                        for( int k= 0; k < cJavaNames; k++)
+                        {
+                            // /usr/java/j2re1.4.0
+                            OUString usDir3(usDir2 + arNames[k]);
+
+                            DirectoryItem item3;
+                            if(DirectoryItem::get(usDir3, item3) == File::E_None)
+                            {
+                                //remove trailing '/'
+                                sal_Int32 islash = usDir3.lastIndexOf('/');
+                                if (islash == usDir3.getLength() - 1
+                                    && (islash
+                                        > RTL_CONSTASCII_LENGTH("file://")))
+                                    usDir3 = usDir3.copy(0, islash);
+                                getAndAddJREInfoByPath(
+                                    usDir3, allInfos, addedInfos);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+#endif // MACOSX
+}
+#endif // ifdef __sun
+#endif // ifdef UNX
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/util.hxx b/jvmfwk/plugins/sunmajor/pluginlib/util.hxx
new file mode 100644
index 000000000..9ba005583
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/util.hxx
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_UTIL_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_UTIL_HXX
+
+#include <rtl/ustring.hxx>
+#include <vector>
+#include <vendorbase.hxx>
+
+namespace jfw_plugin
+{
+
+std::vector<OUString> getVectorFromCharArray(char const * const * ar, int size);
+
+/*   The function uses the relative paths, such as "bin/java.exe" and the provided
+     path to derive the home directory. The home directory is then used as
+     argument to getJREInfoByPath. For example usBinDir is
+     file:///c:/j2sdk/jre/bin then file:///c:/j2sdk/jre would be derived.
+ */
+void addJREInfoFromBinPath(
+    const OUString& path,
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos);
+inline OUString getDirFromFile(std::u16string_view usFilePath);
+void addJavaInfosFromPath(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos);
+
+/* Returns a VendorBase object if JAVA_HOME environment variable points
+   to a JRE.
+ */
+void addJavaInfoFromJavaHome(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos);
+
+void addJavaInfosDirScan(
+    std::vector<rtl::Reference<VendorBase>> & allInfos,
+    std::vector<rtl::Reference<VendorBase>> & addedInfos);
+
+bool makeDriveLetterSame(OUString * fileURL);
+
+
+/* for std::find_if
+   Used to find a JavaInfo::Impl object in a std::vector<Impl*> which has a member usJavaHome
+   as the specified string in the constructor.
+*/
+struct InfoFindSame
+{
+    OUString sJava;
+    explicit InfoFindSame(const OUString& sJavaHome):sJava(sJavaHome){}
+
+    bool operator () (const rtl::Reference<VendorBase> & aVendorInfo)
+    {
+        return aVendorInfo->getHome() == sJava;
+    }
+};
+
+struct SameOrSubDirJREMap
+{
+    OUString s1;
+    explicit SameOrSubDirJREMap(const OUString& s):s1(s){
+    }
+
+    bool operator () (const std::pair<const OUString, rtl::Reference<VendorBase> > & s2)
+    {
+        if (s1 == s2.first)
+            return true;
+        OUString sSub = s2.first + "/";
+        if (s1.match(sSub))
+            return true;
+        return false;
+    }
+};
+
+
+/* Creates a VendorBase object if a JRE could be found at the specified path.
+
+   This depends if there is a JRE at all and if it is from a vendor that
+   is supported by this plugin.
+ */
+rtl::Reference<VendorBase> getJREInfoByPath(const OUString& path);
+
+std::vector<rtl::Reference<VendorBase> > addAllJREInfos(
+    bool checkJavaHomeAndPath, std::vector<rtl::Reference<VendorBase>> & infos);
+
+bool getJavaProps(
+    const OUString & exePath,
+#ifdef JVM_ONE_PATH_CHECK
+    const OUString & homePath,
+#endif
+    std::vector<std::pair<OUString, OUString> >& props,
+    bool * bProcessRun);
+
+void bubbleSortVersion(std::vector<rtl::Reference<VendorBase> >& vec);
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.hxx b/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.hxx
new file mode 100644
index 000000000..ae43cee91
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.hxx
@@ -0,0 +1,14 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_UTIL_COCOA_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_UTIL_COCOA_HXX
+
+#include <sal/config.h>
+
+#include <rtl/ustring.hxx>
+
+bool JvmfwkUtil_isLoadableJVM(OUString const& aURL);
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.mm b/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.mm
new file mode 100644
index 000000000..8c745f8d9
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/util_cocoa.mm
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+#include <rtl/ustring.hxx>
+
+#include <premac.h>
+#import <Foundation/Foundation.h>
+#include <postmac.h>
+
+#import "util_cocoa.hxx"
+
+using namespace rtl;
+
+bool JvmfwkUtil_isLoadableJVM( OUString const & aURL )
+{
+    bool bRet = false;
+
+    if ( aURL.getLength() )
+    {
+        NSAutoreleasePool *pPool = [[NSAutoreleasePool alloc] init];
+
+        NSString *pString = [NSString stringWithCharacters:reinterpret_cast<unichar const *>(aURL.getStr()) length:aURL.getLength()];
+        if ( pString )
+        {
+            // Ignore all but Oracle's JDK as loading Apple's Java and Oracle's
+            // JRE will cause macOS's JavaVM framework to display a dialog and
+            // invoke exit() when loaded via JNI on macOS 10.10
+            NSURL *pURL = [NSURL URLWithString:pString];
+            if ( pURL )
+                pURL = [pURL filePathURL];
+            if ( pURL )
+                pURL = [pURL URLByStandardizingPath];
+            if ( pURL )
+                pURL = [pURL URLByResolvingSymlinksInPath];
+
+            while ( pURL )
+            {
+                // Check if this is a valid bundle
+                NSNumber *pDir = nil;
+                NSURL *pContentsURL = [pURL URLByAppendingPathComponent:@"Contents"];
+                if ( pContentsURL && [pContentsURL getResourceValue:&pDir forKey:NSURLIsDirectoryKey error:nil] && pDir && [pDir boolValue] )
+                {
+                    NSBundle *pBundle = [NSBundle bundleWithURL:pURL];
+                    if ( pBundle )
+                    {
+                        // Make sure that this bundle's Info.plist has the
+                        // proper JVM keys to supports loading via JNI. If
+                        // this bundle is a valid JVM and these keys
+                        // are missing, loading the JVM will cause macOS's
+                        // JavaVM framework to display a dialog and invoke
+                        // exit() when loaded via JNI on macOS 10.10.
+                        NSDictionary *pInfo = [pBundle infoDictionary];
+                        if ( pInfo )
+                        {
+                            NSDictionary *pJavaVM = [pInfo objectForKey:@"JavaVM"];
+                            if ( pJavaVM && [pJavaVM isKindOfClass:[NSDictionary class]] )
+                            {
+                                NSArray *pJVMCapabilities = [pJavaVM objectForKey:@"JVMCapabilities"];
+                                if ( pJVMCapabilities )
+                                {
+                                    if ( [pJVMCapabilities indexOfObjectIdenticalTo:@"JNI"] == NSNotFound )
+                                    {
+                                        if ( [pJVMCapabilities isKindOfClass:[NSMutableArray class]] )
+                                        {
+                                            [static_cast<NSMutableArray *>(pJVMCapabilities) addObject:@"JNI"];
+                                            bRet = true;
+                                        }
+                                        else if ( [pJavaVM isKindOfClass:[NSMutableDictionary class]] )
+                                        {
+                                            NSMutableArray *pNewJVMCapabilities = [NSMutableArray arrayWithCapacity:[pJVMCapabilities count] + 1];
+                                            if ( pNewJVMCapabilities )
+                                            {
+                                                [pNewJVMCapabilities addObject:@"JNI"];
+                                                [static_cast<NSMutableDictionary *>(pJavaVM) setObject:pNewJVMCapabilities forKey:@"JVMCapabilities"];
+                                                bRet = true;
+                                            }
+                                        }
+                                    }
+                                    else
+                                    {
+                                        bRet = true;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                NSURL *pOldURL = pURL;
+                pURL = [pURL URLByDeletingLastPathComponent];
+                if ( pURL )
+                {
+                    pURL = [pURL URLByStandardizingPath];
+                    if ( pURL )
+                    {
+                        pURL = [pURL URLByResolvingSymlinksInPath];
+                        if ( pURL && [pURL isEqual:pOldURL] )
+                            pURL = nil;
+                    }
+                }
+            }
+        }
+
+        [pPool release];
+    }
+
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/vendorbase.cxx b/jvmfwk/plugins/sunmajor/pluginlib/vendorbase.cxx
new file mode 100644
index 000000000..f4cf14a9a
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/vendorbase.cxx
@@ -0,0 +1,197 @@
+/* -*- 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 <osl/file.hxx>
+
+#include <vendorbase.hxx>
+#include "util.hxx"
+
+using namespace osl;
+
+
+namespace jfw_plugin
+{
+
+MalformedVersionException::~MalformedVersionException() = default;
+
+VendorBase::VendorBase()
+{
+}
+
+bool VendorBase::initialize(const std::vector<std::pair<OUString, OUString> >& props)
+{
+    //get java.vendor, java.version, java.home
+    //from system properties
+
+    bool bVersion = false;
+    bool bVendor = false;
+    bool bHome = false;
+    bool bArch = false;
+
+    for (auto const& prop : props)
+    {
+        if(! bVendor && prop.first == "java.vendor")
+        {
+            m_sVendor = prop.second;
+            bVendor = true;
+        }
+        else if (!bVersion && prop.first == "java.version")
+        {
+            m_sVersion = prop.second;
+            bVersion = true;
+        }
+        else if (!bHome && prop.first == "java.home")
+        {
+#ifndef JVM_ONE_PATH_CHECK
+           OUString fileURL;
+           if (osl_getFileURLFromSystemPath(prop.second.pData,& fileURL.pData) ==
+               osl_File_E_None)
+           {
+               //make sure that the drive letter have all the same case
+               //otherwise file:///c:/jre and file:///C:/jre produce two
+               //different objects!!!
+               if (makeDriveLetterSame( & fileURL))
+               {
+                   m_sHome = fileURL;
+                   bHome = true;
+               }
+           }
+#else
+           m_sHome = prop.second;
+           bHome = true;
+#endif
+        }
+        else if (!bArch && prop.first == "os.arch")
+        {
+            m_sArch = prop.second;
+            bArch = true;
+        }
+        if (bVendor && bVersion && bHome && bArch) {
+            break;
+        }
+    }
+    if (!bVersion || !bVendor || !bHome || !bArch)
+        return false;
+
+    // init m_sRuntimeLibrary
+    OSL_ASSERT(!m_sHome.isEmpty());
+    //call virtual function to get the possible paths to the runtime library.
+
+    int size = 0;
+    char const* const* arRtPaths = getRuntimePaths( & size);
+    std::vector<OUString> libpaths = getVectorFromCharArray(arRtPaths, size);
+
+    bool bRt = false;
+    for (auto const& libpath : libpaths)
+    {
+        //Construct an absolute path to the possible runtime
+        OUString usRt= m_sHome + libpath;
+        DirectoryItem item;
+        if(DirectoryItem::get(usRt, item) == File::E_None)
+        {
+            //found runtime lib
+            m_sRuntimeLibrary = usRt;
+            bRt = true;
+            break;
+        }
+    }
+    if (!bRt)
+        return false;
+
+    // init m_sLD_LIBRARY_PATH
+    OSL_ASSERT(!m_sHome.isEmpty());
+    size = 0;
+    char const * const * arLDPaths = getLibraryPaths( & size);
+    std::vector<OUString> ld_paths = getVectorFromCharArray(arLDPaths, size);
+
+    bool bLdPath = true;
+    int c = 0;
+    for (auto const& ld_path : ld_paths)
+    {
+        OUString usAbsUrl= m_sHome + ld_path;
+        // convert to system path
+        OUString usSysPath;
+        if(File::getSystemPathFromFileURL(usAbsUrl, usSysPath) == File::E_None)
+        {
+
+            if(c > 0)
+                m_sLD_LIBRARY_PATH+= OUStringChar(SAL_PATHSEPARATOR);
+            m_sLD_LIBRARY_PATH+= usSysPath;
+        }
+        else
+        {
+            bLdPath = false;
+            break;
+        }
+        ++c;
+    }
+    return bLdPath;
+}
+
+const OUString & VendorBase::getVendor() const
+{
+    return m_sVendor;
+}
+const OUString & VendorBase::getVersion() const
+{
+    return m_sVersion;
+}
+
+const OUString & VendorBase::getHome() const
+{
+    return m_sHome;
+}
+
+const OUString & VendorBase::getLibraryPath() const
+{
+    return m_sLD_LIBRARY_PATH;
+}
+
+const OUString & VendorBase::getRuntimeLibrary() const
+{
+    return m_sRuntimeLibrary;
+}
+
+bool VendorBase::isValidArch() const
+{
+    // Warning: These values come from the "os.arch" property.
+    // It is not defined what the exact values are.
+    // Oracle JRE 8 has "x86" and "amd64", the others were found at http://lopica.sourceforge.net/os.html .
+    // There might still be missing some options; we need to extend the check once we find out.
+#if defined _WIN64 || (defined MACOSX && defined __x86_64__)
+    return m_sArch == "amd64" || m_sArch == "x86_64";
+#elif defined _WIN32
+    return m_sArch == "x86" || m_sArch == "i386" || m_sArch == "i686";
+#elif defined MACOSX && defined __aarch64__
+    return m_sArch == "aarch64";
+#else
+    (void)this;
+    return true;
+#endif
+}
+
+bool VendorBase::needsRestart() const
+{
+    return !getLibraryPath().isEmpty();
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.cxx b/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.cxx
new file mode 100644
index 000000000..96cc05167
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.cxx
@@ -0,0 +1,52 @@
+/* -*- 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 "vendorlist.hxx"
+#include "sunjre.hxx"
+#include "otherjre.hxx"
+
+namespace jfw_plugin
+{
+
+/* Note: The vendor strings must be UTF-8. For example, if
+   the string contains an umlaut then it must be expressed
+   by "\xXX\xXX"
+ */
+VendorSupportMapEntry const gVendorMap[] ={
+// For macOS, don't bother with implementations that aren't relevant (or have never existed)
+#ifdef MACOSX
+    VENDOR_MAP_ENTRY<OtherInfo>("Apple Inc."),
+    VENDOR_MAP_ENTRY<OtherInfo>("Apple Computer, Inc."),
+#endif
+    VENDOR_MAP_ENTRY<SunInfo>("Sun Microsystems Inc."),
+    VENDOR_MAP_ENTRY<SunInfo>("Oracle Corporation"),
+    VENDOR_MAP_ENTRY<SunInfo>("Amazon.com Inc."),
+    VENDOR_MAP_ENTRY<SunInfo>("Azul Systems, Inc."),
+#ifndef MACOSX
+    VENDOR_MAP_ENTRY<OtherInfo>("IBM Corporation"),
+    VENDOR_MAP_ENTRY<OtherInfo>("Blackdown Java-Linux Team"),
+    VENDOR_MAP_ENTRY<OtherInfo>("BEA Systems, Inc."),
+    VENDOR_MAP_ENTRY<OtherInfo>("The FreeBSD Foundation"),
+#endif
+    {nullptr, nullptr, nullptr} };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.hxx b/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.hxx
new file mode 100644
index 000000000..e10958d24
--- /dev/null
+++ b/jvmfwk/plugins/sunmajor/pluginlib/vendorlist.hxx
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_VENDORLIST_HXX
+#define INCLUDED_JVMFWK_PLUGINS_SUNMAJOR_PLUGINLIB_VENDORLIST_HXX
+
+#include <rtl/ref.hxx>
+
+namespace jfw_plugin { class VendorBase; }
+
+namespace jfw_plugin
+{
+
+typedef char  const * const * (* getJavaExePaths_func)(int*);
+typedef rtl::Reference<VendorBase> (* createInstance_func) ();
+
+struct VendorSupportMapEntry
+{
+    char const * sVendorName;
+    getJavaExePaths_func getJavaFunc;
+    createInstance_func  createFunc;
+};
+
+extern VendorSupportMapEntry const gVendorMap[];
+
+template<typename y> constexpr VendorSupportMapEntry VENDOR_MAP_ENTRY(char const * x) {
+    return {x, & y::getJavaExePaths, & y::createInstance};
+}
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */