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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <rtl/process.h>
#include <sal/log.hxx>
#include <uno/environment.h>
#include <uno/lbnames.h>
#include <uno/mapping.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
#include <cppuhelper/exc_hlp.hxx>
#include <tools/diagnose_ex.h>
#ifdef LINUX
#undef minor
#undef major
#endif
#include <com/sun/star/java/XJavaVM.hpp>
#include <jni.h>
#include <cppuhelper/factory.hxx>
#include <cppuhelper/implementationentry.hxx>
#include <cppuhelper/implbase.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <com/sun/star/loader/XImplementationLoader.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <jvmaccess/unovirtualmachine.hxx>
#include <jvmaccess/virtualmachine.hxx>
namespace com::sun::star::registry { class XRegistryKey; }
using namespace css::java;
using namespace css::lang;
using namespace css::loader;
using namespace css::uno;
using namespace css::registry;
using namespace ::cppu;
using namespace ::osl;
namespace stoc_javaloader {
static Mutex & getInitMutex();
static Sequence< OUString > loader_getSupportedServiceNames()
{
return { "com.sun.star.loader.Java", "com.sun.star.loader.Java2" };
}
static OUString loader_getImplementationName()
{
return "com.sun.star.comp.stoc.JavaComponentLoader";
}
namespace {
class JavaComponentLoader : public WeakImplHelper<XImplementationLoader, XServiceInfo>
{
css::uno::Reference<XComponentContext> m_xComponentContext;
/** Do not use m_javaLoader directly. Instead use getJavaLoader.
*/
css::uno::Reference<XImplementationLoader> m_javaLoader;
/** The returned Reference contains a null pointer if the office is not configured
to run java.
@exception css::uno::RuntimeException
If the Java implementation of the loader could not be obtained, for reasons other
then that java was not configured the RuntimeException is thrown.
*/
const css::uno::Reference<XImplementationLoader> & getJavaLoader();
public:
/// @throws RuntimeException
explicit JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx);
public:
// XServiceInfo
virtual OUString SAL_CALL getImplementationName() override;
virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
virtual Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
// XImplementationLoader
virtual css::uno::Reference<XInterface> SAL_CALL activate(
const OUString& implementationName, const OUString& implementationLoaderUrl,
const OUString& locationUrl, const css::uno::Reference<XRegistryKey>& xKey) override;
virtual sal_Bool SAL_CALL writeRegistryInfo(
const css::uno::Reference<XRegistryKey>& xKey,
const OUString& implementationLoaderUrl, const OUString& locationUrl) override;
};
}
const css::uno::Reference<XImplementationLoader> & JavaComponentLoader::getJavaLoader()
{
MutexGuard aGuard(getInitMutex());
if (m_javaLoader.is())
return m_javaLoader;
uno_Environment * pJava_environment = nullptr;
uno_Environment * pUno_environment = nullptr;
typelib_InterfaceTypeDescription * pType_XImplementationLoader = nullptr;
try {
// get a java vm, where we can create a loader
css::uno::Reference<XJavaVM> javaVM_xJavaVM(
m_xComponentContext->getValueByName(
("/singletons/"
"com.sun.star.java.theJavaVirtualMachine")),
UNO_QUERY_THROW);
// Use the special protocol of XJavaVM.getJavaVM: If the passed in
// process ID has an extra 17th byte of value one, the returned any
// contains a pointer to a jvmaccess::UnoVirtualMachine, instead of the
// underlying JavaVM pointer:
Sequence<sal_Int8> processID(17);
rtl_getGlobalProcessId(reinterpret_cast<sal_uInt8 *>(processID.getArray()));
processID[16] = 1;
// We get a non-refcounted pointer to a jvmaccess::UnoVirtualMachine
// from the XJavaVM service (the pointer is guaranteed to be valid
// as long as our reference to the XJavaVM service lasts), and
// convert the non-refcounted pointer into a refcounted one
// immediately:
static_assert(sizeof (sal_Int64)
>= sizeof (jvmaccess::UnoVirtualMachine *), "must be at least the same size");
sal_Int64 nPointer = reinterpret_cast< sal_Int64 >(
static_cast< jvmaccess::UnoVirtualMachine * >(nullptr));
javaVM_xJavaVM->getJavaVM(processID) >>= nPointer;
rtl::Reference< jvmaccess::UnoVirtualMachine > xVirtualMachine(
reinterpret_cast< jvmaccess::UnoVirtualMachine * >(nPointer));
if (!xVirtualMachine.is())
{
//throw RuntimeException(
// "javaloader error - JavaVirtualMachine service could not provide a VM",
// css::uno::Reference<XInterface>());
// We must not throw a RuntimeException, because this might end the applications.
// It is ok if java components
// are not working because the office can be installed without Java support.
SAL_WARN("stoc", "getJavaVM returned null");
return m_javaLoader; // null-ref
}
try
{
jvmaccess::VirtualMachine::AttachGuard aGuard2(
xVirtualMachine->getVirtualMachine());
JNIEnv * pJNIEnv = aGuard2.getEnvironment();
// instantiate the java JavaLoader
jclass jcClassLoader = pJNIEnv->FindClass("java/lang/ClassLoader");
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - could not find class java/lang/ClassLoader");
jmethodID jmLoadClass = pJNIEnv->GetMethodID(
jcClassLoader, "loadClass",
"(Ljava/lang/String;)Ljava/lang/Class;");
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - could not find method java/lang/ClassLoader.loadClass");
jvalue arg;
arg.l = pJNIEnv->NewStringUTF(
"com.sun.star.comp.loader.JavaLoader");
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - could not create string");
jclass jcJavaLoader = static_cast< jclass >(
pJNIEnv->CallObjectMethodA(
static_cast< jobject >(xVirtualMachine->getClassLoader()),
jmLoadClass, &arg));
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - could not find class com/sun/star/comp/loader/JavaLoader");
jmethodID jmJavaLoader_init = pJNIEnv->GetMethodID(jcJavaLoader, "<init>", "()V");
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed");
jobject joJavaLoader = pJNIEnv->NewObject(jcJavaLoader, jmJavaLoader_init);
if(pJNIEnv->ExceptionOccurred())
throw RuntimeException(
"javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed");
// map the java JavaLoader to this environment
OUString sJava("java");
uno_getEnvironment(&pJava_environment, sJava.pData,
xVirtualMachine.get());
if(!pJava_environment)
throw RuntimeException(
"javaloader error - no Java environment available");
// why is there no convenient constructor?
OUString sCppu_current_lb_name(CPPU_CURRENT_LANGUAGE_BINDING_NAME);
uno_getEnvironment(&pUno_environment, sCppu_current_lb_name.pData, nullptr);
if(!pUno_environment)
throw RuntimeException(
"javaloader error - no C++ environment available");
Mapping java_curr(pJava_environment, pUno_environment);
if(!java_curr.is())
throw RuntimeException(
"javaloader error - no mapping from java to C++ ");
// release java environment
pJava_environment->release(pJava_environment);
pJava_environment = nullptr;
// release uno environment
pUno_environment->release(pUno_environment);
pUno_environment = nullptr;
cppu::UnoType<XImplementationLoader>::get().
getDescription(reinterpret_cast<typelib_TypeDescription **>(&pType_XImplementationLoader));
if(!pType_XImplementationLoader)
throw RuntimeException(
"javaloader error - no type information for XImplementationLoader");
m_javaLoader.set(static_cast<XImplementationLoader *>(java_curr.mapInterface(joJavaLoader, pType_XImplementationLoader)));
pJNIEnv->DeleteLocalRef( joJavaLoader );
if(!m_javaLoader.is())
throw RuntimeException(
"javaloader error - mapping of java XImplementationLoader to c++ failed");
typelib_typedescription_release(reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
pType_XImplementationLoader = nullptr;
}
catch (jvmaccess::VirtualMachine::AttachGuard::CreationException &)
{
css::uno::Any anyEx = cppu::getCaughtException();
throw css::lang::WrappedTargetRuntimeException(
"jvmaccess::VirtualMachine::AttachGuard::CreationException",
static_cast< cppu::OWeakObject * >(this), anyEx );
}
// set the service manager at the javaloader
css::uno::Reference<XInitialization> javaLoader_XInitialization(m_javaLoader, UNO_QUERY_THROW);
Any any;
any <<= m_xComponentContext->getServiceManager();
javaLoader_XInitialization->initialize(Sequence<Any>(&any, 1));
}
catch(RuntimeException &) {
if(pJava_environment)
pJava_environment->release(pJava_environment);
if(pUno_environment)
pUno_environment->release(pUno_environment);
if(pType_XImplementationLoader)
typelib_typedescription_release(
reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
throw;
}
SAL_INFO("stoc", "javaloader.cxx: mapped javaloader - 0x" << m_javaLoader.get());
return m_javaLoader;
}
JavaComponentLoader::JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx) :
m_xComponentContext(xCtx)
{
}
// XServiceInfo
OUString SAL_CALL JavaComponentLoader::getImplementationName()
{
return loader_getImplementationName();
}
sal_Bool SAL_CALL JavaComponentLoader::supportsService(const OUString & ServiceName)
{
return cppu::supportsService(this, ServiceName);
}
Sequence<OUString> SAL_CALL JavaComponentLoader::getSupportedServiceNames()
{
return loader_getSupportedServiceNames();
}
// XImplementationLoader
sal_Bool SAL_CALL JavaComponentLoader::writeRegistryInfo(
const css::uno::Reference<XRegistryKey> & xKey, const OUString & blabla,
const OUString & rLibName)
{
const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
if (!loader.is())
throw CannotRegisterImplementationException("Could not create Java implementation loader");
return loader->writeRegistryInfo(xKey, blabla, rLibName);
}
css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader::activate(
const OUString & rImplName, const OUString & blabla, const OUString & rLibName,
const css::uno::Reference<XRegistryKey> & xKey)
{
const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
if (!loader.is())
throw CannotActivateFactoryException("Could not create Java implementation loader");
return loader->activate(rImplName, blabla, rLibName, xKey);
}
static Mutex & getInitMutex()
{
static Mutex ourMutex;
return ourMutex;
}
/// @throws Exception
static css::uno::Reference<XInterface> JavaComponentLoader_CreateInstance(const css::uno::Reference<XComponentContext> & xCtx)
{
css::uno::Reference<XInterface> xRet;
try {
MutexGuard guard( getInitMutex() );
// The javaloader is never destroyed and there can be only one!
// Note that the first context wins...
static css::uno::Reference< XInterface > xStaticRef = *new JavaComponentLoader(xCtx);
xRet = xStaticRef;
}
catch(const RuntimeException &) {
TOOLS_INFO_EXCEPTION("stoc", "could not init javaloader");
throw;
}
return xRet;
}
} //end namespace
using namespace stoc_javaloader;
static const struct ImplementationEntry g_entries[] =
{
{
JavaComponentLoader_CreateInstance, loader_getImplementationName,
loader_getSupportedServiceNames, createSingleComponentFactory,
nullptr , 0
},
{ nullptr, nullptr, nullptr, nullptr, nullptr, 0 }
};
extern "C"
{
SAL_DLLPUBLIC_EXPORT void * javaloader_component_getFactory(
const char * pImplName, void * pServiceManager, void * pRegistryKey )
{
return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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