    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     *
     * This file incorporates work covered by the following license notice:
     *
     *   Licensed to the Apache Software Foundation (ASF) under one or more
     *   contributor license agreements. See the NOTICE file distributed
     *   with this work for additional information regarding copyright
     *   ownership. The ASF licenses this file to you under the Apache
     *   License, Version 2.0 (the "License"); you may not use this file
     *   except in compliance with the License. You may obtain a copy of
     *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
     */

    #include <sal/config.h>
    #include <sal/log.hxx>

    #include <osl/diagnose.h>

    #include <rtl/alloc.h>
    #include <rtl/bootstrap.hxx>
    #include <rtl/string.hxx>

    #include <uno/lbnames.h>
    #include <uno/mapping.hxx>
    #include <uno/environment.hxx>

    #include <cppuhelper/bootstrap.hxx>

    #include <com/sun/star/lang/XComponent.hpp>
    #include <com/sun/star/lang/XSingleComponentFactory.hpp>

    #include <jni.h>
    #include <jvmaccess/virtualmachine.hxx>
    #include <jvmaccess/unovirtualmachine.hxx>

    #include "juhx-export-functions.hxx"
    #include "vm.hxx"

    using namespace ::com::sun::star;
    using namespace ::com::sun::star::uno;

    namespace javaunohelper
    {

    inline OUString jstring_to_oustring( jstring jstr, JNIEnv * jni_env )
    {
        OSL_ASSERT( sizeof (sal_Unicode) == sizeof (jchar) );
        jsize len = jni_env->GetStringLength( jstr );
        rtl_uString * ustr =
            static_cast<rtl_uString *>(std::malloc( sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ));
        jni_env->GetStringRegion( jstr, 0, len, reinterpret_cast<jchar *>(ustr->buffer) );
        OSL_ASSERT( !jni_env->ExceptionCheck() );
        ustr->refCount = 1;
        ustr->length = len;
        ustr->buffer[ len ] = '\0';
        return OUString( ustr, SAL_NO_ACQUIRE );
    }

    }

    jobject Java_com_sun_star_comp_helper_Bootstrap_cppuhelper_1bootstrap(
        JNIEnv * jni_env, SAL_UNUSED_PARAMETER jclass, jstring juno_rc, jobjectArray jpairs,
        jobject loader )
    {
        try
        {
            if (nullptr != jpairs)
            {
                jsize nPos = 0, len = jni_env->GetArrayLength( jpairs );
                while (nPos < len)
                {
                    // name
                    jstring jstr = static_cast<jstring>(jni_env->GetObjectArrayElement( jpairs, nPos ));
                    if (jni_env->ExceptionCheck())
                    {
                        jni_env->ExceptionClear();
                        throw RuntimeException( "index out of bounds?!" );
                    }
                    if (nullptr != jstr)
                    {
                        OUString name( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
                        // value
                        jstr = static_cast<jstring>(jni_env->GetObjectArrayElement( jpairs, nPos +1 ));
                        if (jni_env->ExceptionCheck())
                        {
                            jni_env->ExceptionClear();
                            throw RuntimeException( "index out of bounds?!" );
                        }
                        if (nullptr != jstr)
                        {
                            OUString value( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );

                            // set bootstrap parameter
                            ::rtl::Bootstrap::set( name, value );
                        }
                    }
                    nPos += 2;
                }
            }

            // bootstrap uno
            Reference< XComponentContext > xContext;
            if (nullptr == juno_rc)
            {
                xContext = ::cppu::defaultBootstrap_InitialComponentContext();
            }
            else
            {
                OUString uno_rc( ::javaunohelper::jstring_to_oustring( juno_rc, jni_env ) );
                xContext = ::cppu::defaultBootstrap_InitialComponentContext( uno_rc );
            }

            // create vm access
            ::rtl::Reference< ::jvmaccess::UnoVirtualMachine > vm_access(
                ::javaunohelper::create_vm_access( jni_env, loader ) );
            // wrap vm singleton entry
            xContext = ::javaunohelper::install_vm_singleton( xContext, vm_access );

            // get uno envs
            OUString cpp_env_name = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
            OUString java_env_name = UNO_LB_JAVA;
            Environment java_env, cpp_env;
            uno_getEnvironment(reinterpret_cast<uno_Environment **>(&cpp_env), cpp_env_name.pData, nullptr);
            uno_getEnvironment(reinterpret_cast<uno_Environment **>(&java_env), java_env_name.pData, vm_access.get() );

            // map to java
            Mapping mapping( cpp_env.get(), java_env.get() );
            if (! mapping.is())
            {
                Reference< lang::XComponent > xComp( xContext, UNO_QUERY );
                if (xComp.is())
                    xComp->dispose();
                throw RuntimeException("cannot get mapping C++ <-> Java!" );
            }

            jobject jret = static_cast<jobject>(mapping.mapInterface( xContext.get(), cppu::UnoType<decltype(xContext)>::get() ));
            jobject jlocal = jni_env->NewLocalRef( jret );
            jni_env->DeleteGlobalRef( jret );

            return jlocal;
        }
        catch (const RuntimeException & exc)
        {
            jclass c = jni_env->FindClass( "com/sun/star/uno/RuntimeException" );
            if (nullptr != c)
            {
                SAL_WARN("javaunohelper", "forwarding RuntimeException: " << exc );
                OString cstr( OUStringToOString(
                                  exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
                jni_env->ThrowNew( c, cstr.getStr() );
            }
        }
        catch (const Exception & exc)
        {
            jclass c = jni_env->FindClass( "com/sun/star/uno/Exception" );
            if (nullptr != c)
            {
                SAL_WARN("javaunohelper",  "forwarding Exception: " << exc );
                OString cstr( OUStringToOString(
                                  exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
                jni_env->ThrowNew( c, cstr.getStr() );
            }
        }

        return nullptr;
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V522 There might be dereferencing of a potential null pointer 'ustr'. Check lines: 57, 56.