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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <cstdarg>
21 : #include <osl/diagnose.h>
22 : #include <osl/process.h>
23 :
24 : #include <rtl/process.h>
25 : #include <rtl/ustrbuf.hxx>
26 :
27 : #include <uno/environment.h>
28 : #include <uno/mapping.hxx>
29 : #include "com/sun/star/uno/RuntimeException.hpp"
30 :
31 : #ifdef LINUX
32 : #undef minor
33 : #undef major
34 : #endif
35 :
36 : #include <com/sun/star/java/XJavaVM.hpp>
37 :
38 : #include <com/sun/star/lang/XMultiComponentFactory.hpp>
39 :
40 : #include "jni.h"
41 :
42 : #include <cppuhelper/factory.hxx>
43 : #include <cppuhelper/implementationentry.hxx>
44 :
45 : #include <cppuhelper/implbase2.hxx>
46 :
47 : #include <com/sun/star/loader/XImplementationLoader.hpp>
48 : #include <com/sun/star/lang/IllegalArgumentException.hpp>
49 : #include <com/sun/star/lang/XServiceInfo.hpp>
50 : #include <com/sun/star/lang/XInitialization.hpp>
51 : #include <com/sun/star/registry/XRegistryKey.hpp>
52 :
53 : #include "jvmaccess/unovirtualmachine.hxx"
54 : #include "jvmaccess/virtualmachine.hxx"
55 :
56 : using namespace ::com::sun::star::java;
57 : using namespace ::com::sun::star::lang;
58 : using namespace ::com::sun::star::loader;
59 : using namespace ::com::sun::star::uno;
60 : using namespace ::com::sun::star::registry;
61 :
62 : using namespace ::cppu;
63 : using namespace ::rtl;
64 : using namespace ::osl;
65 :
66 : namespace stoc_javaloader {
67 :
68 : static Mutex & getInitMutex();
69 :
70 2 : static Sequence< OUString > loader_getSupportedServiceNames()
71 : {
72 2 : Sequence< OUString > seqNames(2);
73 2 : seqNames.getArray()[0] = OUString( "com.sun.star.loader.Java");
74 2 : seqNames.getArray()[1] = OUString( "com.sun.star.loader.Java2");
75 2 : return seqNames;
76 : }
77 :
78 2 : static OUString loader_getImplementationName()
79 : {
80 2 : return OUString( "com.sun.star.comp.stoc.JavaComponentLoader" );
81 : }
82 :
83 : class JavaComponentLoader : public WeakImplHelper2<XImplementationLoader, XServiceInfo>
84 : {
85 : css::uno::Reference<XComponentContext> m_xComponentContext;
86 : /** Do not use m_javaLoader directly. Instead use getJavaLoader.
87 : */
88 : css::uno::Reference<XImplementationLoader> m_javaLoader;
89 : /** The retured Reference contains a null pointer if the office is not configured
90 : to run java.
91 :
92 : @exception com::sun::star::uno::RuntimeException
93 : If the Java implementation of the loader could not be obtained, for reasons other
94 : then that java was not configured the RuntimeException is thrown.
95 : */
96 : const css::uno::Reference<XImplementationLoader> & getJavaLoader();
97 :
98 :
99 : public:
100 : JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx)
101 : throw(RuntimeException);
102 : virtual ~JavaComponentLoader() throw();
103 :
104 : public:
105 : // XServiceInfo
106 : virtual OUString SAL_CALL getImplementationName() throw(RuntimeException);
107 : virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName)
108 : throw(RuntimeException);
109 : virtual Sequence<OUString> SAL_CALL getSupportedServiceNames()
110 : throw(RuntimeException);
111 :
112 : // XImplementationLoader
113 : virtual css::uno::Reference<XInterface> SAL_CALL activate(
114 : const OUString& implementationName, const OUString& implementationLoaderUrl,
115 : const OUString& locationUrl, const css::uno::Reference<XRegistryKey>& xKey)
116 : throw(CannotActivateFactoryException, RuntimeException);
117 : virtual sal_Bool SAL_CALL writeRegistryInfo(
118 : const css::uno::Reference<XRegistryKey>& xKey,
119 : const OUString& implementationLoaderUrl, const OUString& locationUrl)
120 : throw(CannotRegisterImplementationException, RuntimeException);
121 : };
122 :
123 4 : const css::uno::Reference<XImplementationLoader> & JavaComponentLoader::getJavaLoader()
124 : {
125 4 : MutexGuard aGuard(getInitMutex());
126 :
127 4 : if (m_javaLoader.is())
128 2 : return m_javaLoader;
129 :
130 2 : uno_Environment * pJava_environment = NULL;
131 2 : uno_Environment * pUno_environment = NULL;
132 2 : typelib_InterfaceTypeDescription * pType_XImplementationLoader = 0;
133 :
134 : try {
135 : // get a java vm, where we can create a loader
136 : css::uno::Reference<XJavaVM> javaVM_xJavaVM(
137 2 : m_xComponentContext->getValueByName(
138 : OUString(
139 : "/singletons/"
140 2 : "com.sun.star.java.theJavaVirtualMachine")),
141 2 : UNO_QUERY_THROW);
142 :
143 : // Use the special protocol of XJavaVM.getJavaVM: If the passed in
144 : // process ID has an extra 17th byte of value one, the returned any
145 : // contains a pointer to a jvmaccess::UnoVirtualMachine, instead of the
146 : // underlying JavaVM pointer:
147 4 : Sequence<sal_Int8> processID(17);
148 2 : rtl_getGlobalProcessId(reinterpret_cast<sal_uInt8 *>(processID.getArray()));
149 2 : processID[16] = 1;
150 :
151 : // We get a non-refcounted pointer to a jvmaccess::UnoVirtualMachine
152 : // from the XJavaVM service (the pointer is guaranteed to be valid
153 : // as long as our reference to the XJavaVM service lasts), and
154 : // convert the non-refcounted pointer into a refcounted one
155 : // immediately:
156 : OSL_ENSURE(sizeof (sal_Int64)
157 : >= sizeof (jvmaccess::UnoVirtualMachine *),
158 : "Pointer cannot be represented as sal_Int64");
159 : sal_Int64 nPointer = reinterpret_cast< sal_Int64 >(
160 2 : static_cast< jvmaccess::UnoVirtualMachine * >(0));
161 2 : javaVM_xJavaVM->getJavaVM(processID) >>= nPointer;
162 : rtl::Reference< jvmaccess::UnoVirtualMachine > xVirtualMachine(
163 4 : reinterpret_cast< jvmaccess::UnoVirtualMachine * >(nPointer));
164 2 : if (!xVirtualMachine.is())
165 : {
166 : //throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
167 : // "javaloader error - JavaVirtualMachine service could not provide a VM")),
168 : // css::uno::Reference<XInterface>());
169 : // We must not throw a RuntimeException, because this might end the applications.
170 : // It is ok if java components
171 : // are not working because the office can be installed without Java support.
172 : SAL_WARN("stoc", "getJavaVM returned null");
173 0 : return m_javaLoader; // null-ref
174 : }
175 :
176 : try
177 : {
178 : jvmaccess::VirtualMachine::AttachGuard aGuard2(
179 2 : xVirtualMachine->getVirtualMachine());
180 2 : JNIEnv * pJNIEnv = aGuard2.getEnvironment();
181 :
182 : // instantiate the java JavaLoader
183 2 : jclass jcClassLoader = pJNIEnv->FindClass("java/lang/ClassLoader");
184 2 : if(pJNIEnv->ExceptionOccurred())
185 : throw RuntimeException(OUString(
186 : "javaloader error - could not find class java/lang/ClassLoader"),
187 0 : css::uno::Reference<XInterface>());
188 : jmethodID jmLoadClass = pJNIEnv->GetMethodID(
189 : jcClassLoader, "loadClass",
190 2 : "(Ljava/lang/String;)Ljava/lang/Class;");
191 2 : if(pJNIEnv->ExceptionOccurred())
192 : throw RuntimeException(OUString(
193 : "javaloader error - could not find method java/lang/ClassLoader.loadClass"),
194 0 : css::uno::Reference<XInterface>());
195 : jvalue arg;
196 : arg.l = pJNIEnv->NewStringUTF(
197 2 : "com.sun.star.comp.loader.JavaLoader");
198 2 : if(pJNIEnv->ExceptionOccurred())
199 : throw RuntimeException(OUString(
200 : "javaloader error - could not create string"),
201 0 : css::uno::Reference<XInterface>());
202 : jclass jcJavaLoader = static_cast< jclass >(
203 : pJNIEnv->CallObjectMethodA(
204 2 : static_cast< jobject >(xVirtualMachine->getClassLoader()),
205 2 : jmLoadClass, &arg));
206 2 : if(pJNIEnv->ExceptionOccurred())
207 : throw RuntimeException(OUString(
208 : "javaloader error - could not find class com/sun/star/comp/loader/JavaLoader"),
209 0 : css::uno::Reference<XInterface>());
210 2 : jmethodID jmJavaLoader_init = pJNIEnv->GetMethodID(jcJavaLoader, "<init>", "()V");
211 2 : if(pJNIEnv->ExceptionOccurred())
212 : throw RuntimeException(OUString(
213 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed"),
214 0 : css::uno::Reference<XInterface>());
215 2 : jobject joJavaLoader = pJNIEnv->NewObject(jcJavaLoader, jmJavaLoader_init);
216 2 : if(pJNIEnv->ExceptionOccurred())
217 : throw RuntimeException(OUString(
218 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed"),
219 0 : css::uno::Reference<XInterface>());
220 :
221 : // map the java JavaLoader to this environment
222 4 : OUString sJava("java");
223 : uno_getEnvironment(&pJava_environment, sJava.pData,
224 2 : xVirtualMachine.get());
225 2 : if(!pJava_environment)
226 : throw RuntimeException(OUString(
227 0 : "javaloader error - no Java environment available"), css::uno::Reference<XInterface>());
228 :
229 : // why is there no convinient contructor?
230 4 : OUString sCppu_current_lb_name(CPPU_CURRENT_LANGUAGE_BINDING_NAME);
231 2 : uno_getEnvironment(&pUno_environment, sCppu_current_lb_name.pData, NULL);
232 2 : if(!pUno_environment)
233 : throw RuntimeException(OUString(
234 0 : "javaloader error - no C++ environment available"), css::uno::Reference<XInterface>());
235 :
236 4 : Mapping java_curr(pJava_environment, pUno_environment);
237 2 : if(!java_curr.is())
238 : throw RuntimeException(OUString(
239 0 : "javaloader error - no mapping from java to C++ "), css::uno::Reference<XInterface>());
240 :
241 : // release java environment
242 2 : pJava_environment->release(pJava_environment);
243 2 : pJava_environment = NULL;
244 :
245 : // release uno environment
246 2 : pUno_environment->release(pUno_environment);
247 2 : pUno_environment = NULL;
248 :
249 2 : getCppuType((css::uno::Reference<XImplementationLoader> *) 0).
250 2 : getDescription((typelib_TypeDescription **) & pType_XImplementationLoader);
251 2 : if(!pType_XImplementationLoader)
252 : throw RuntimeException(OUString(
253 : "javaloader error - no type information for XImplementationLoader"),
254 0 : css::uno::Reference<XInterface>());
255 :
256 6 : m_javaLoader = css::uno::Reference<XImplementationLoader>(reinterpret_cast<XImplementationLoader *>(
257 4 : java_curr.mapInterface(joJavaLoader, pType_XImplementationLoader)));
258 2 : pJNIEnv->DeleteLocalRef( joJavaLoader );
259 2 : if(!m_javaLoader.is())
260 : throw RuntimeException(OUString(
261 : "javaloader error - mapping of java XImplementationLoader to c++ failed"),
262 0 : css::uno::Reference<XInterface>());
263 :
264 2 : typelib_typedescription_release(reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
265 4 : pType_XImplementationLoader = NULL;
266 : }
267 0 : catch (jvmaccess::VirtualMachine::AttachGuard::CreationException &)
268 : {
269 : throw RuntimeException(
270 : OUString(
271 : "jvmaccess::VirtualMachine::AttachGuard"
272 0 : "::CreationException"),0);
273 : }
274 :
275 : // set the service manager at the javaloader
276 4 : css::uno::Reference<XInitialization> javaLoader_XInitialization(m_javaLoader, UNO_QUERY);
277 2 : if(!javaLoader_XInitialization.is())
278 : throw RuntimeException(OUString(
279 : "javaloader error - initialization of java javaloader failed, no XInitialization"),
280 0 : css::uno::Reference<XInterface>());
281 :
282 4 : Any any;
283 4 : any <<= css::uno::Reference<XMultiComponentFactory>(
284 4 : m_xComponentContext->getServiceManager());
285 :
286 4 : javaLoader_XInitialization->initialize(Sequence<Any>(&any, 1));
287 : }
288 0 : catch(RuntimeException &) {
289 0 : if(pJava_environment)
290 0 : pJava_environment->release(pJava_environment);
291 :
292 0 : if(pUno_environment)
293 0 : pUno_environment->release(pUno_environment);
294 :
295 0 : if(pType_XImplementationLoader)
296 : typelib_typedescription_release(
297 0 : reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
298 0 : throw;
299 : }
300 : OSL_TRACE("javaloader.cxx: mapped javaloader - 0x%x", m_javaLoader.get());
301 2 : return m_javaLoader;
302 : }
303 :
304 2 : JavaComponentLoader::JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx) throw(RuntimeException) :
305 2 : m_xComponentContext(xCtx)
306 :
307 : {
308 :
309 2 : }
310 :
311 0 : JavaComponentLoader::~JavaComponentLoader() throw()
312 : {
313 0 : }
314 :
315 : // XServiceInfo
316 0 : OUString SAL_CALL JavaComponentLoader::getImplementationName()
317 : throw(::com::sun::star::uno::RuntimeException)
318 : {
319 0 : return loader_getImplementationName();
320 : }
321 :
322 0 : sal_Bool SAL_CALL JavaComponentLoader::supportsService(const OUString & ServiceName)
323 : throw(::com::sun::star::uno::RuntimeException)
324 : {
325 0 : sal_Bool bSupport = sal_False;
326 :
327 0 : Sequence<OUString> aSNL = getSupportedServiceNames();
328 0 : const OUString * pArray = aSNL.getArray();
329 0 : for(sal_Int32 i = 0; i < aSNL.getLength() && !bSupport; ++ i)
330 0 : bSupport = pArray[i] == ServiceName;
331 :
332 0 : return bSupport;
333 : }
334 :
335 0 : Sequence<OUString> SAL_CALL JavaComponentLoader::getSupportedServiceNames()
336 : throw(::com::sun::star::uno::RuntimeException)
337 : {
338 0 : return loader_getSupportedServiceNames();
339 : }
340 :
341 :
342 :
343 : // XImplementationLoader
344 2 : sal_Bool SAL_CALL JavaComponentLoader::writeRegistryInfo(
345 : const css::uno::Reference<XRegistryKey> & xKey, const OUString & blabla,
346 : const OUString & rLibName)
347 : throw(CannotRegisterImplementationException, RuntimeException)
348 : {
349 2 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
350 2 : if (loader.is())
351 4 : return loader->writeRegistryInfo(xKey, blabla, rLibName);
352 : else
353 : throw CannotRegisterImplementationException(
354 0 : OUString("Could not create Java implementation loader"), NULL);
355 : }
356 :
357 :
358 2 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader::activate(
359 : const OUString & rImplName, const OUString & blabla, const OUString & rLibName,
360 : const css::uno::Reference<XRegistryKey> & xKey)
361 : throw(CannotActivateFactoryException, RuntimeException)
362 : {
363 2 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
364 2 : if (loader.is())
365 4 : return loader->activate(rImplName, blabla, rLibName, xKey);
366 : else
367 : throw CannotActivateFactoryException(
368 0 : OUString("Could not create Java implementation loader"), NULL);
369 : }
370 :
371 8 : static Mutex & getInitMutex()
372 : {
373 : static Mutex * pMutex = 0;
374 8 : if( ! pMutex )
375 : {
376 2 : MutexGuard guard( Mutex::getGlobalMutex() );
377 2 : if( ! pMutex )
378 : {
379 2 : static Mutex mutex;
380 2 : pMutex = &mutex;
381 2 : }
382 : }
383 8 : return *pMutex;
384 : }
385 :
386 4 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader_CreateInstance(const css::uno::Reference<XComponentContext> & xCtx) throw(Exception)
387 : {
388 4 : css::uno::Reference<XInterface> xRet;
389 :
390 : try {
391 4 : MutexGuard guard( getInitMutex() );
392 : // The javaloader is never destroyed and there can be only one!
393 : // Note that the first context wins ....
394 : static css::uno::Reference< XInterface > *pStaticRef = 0;
395 4 : if( pStaticRef )
396 : {
397 2 : xRet = *pStaticRef;
398 : }
399 : else
400 : {
401 2 : xRet = *new JavaComponentLoader(xCtx);
402 2 : pStaticRef = new css::uno::Reference< XInterface > ( xRet );
403 4 : }
404 : }
405 0 : catch(const RuntimeException & runtimeException) {
406 0 : OString message = OUStringToOString(runtimeException.Message, RTL_TEXTENCODING_ASCII_US);
407 0 : osl_trace("javaloader - could not init javaloader cause of %s", message.getStr());
408 0 : throw;
409 : }
410 :
411 4 : return xRet;
412 : }
413 :
414 : } //end namespace
415 :
416 :
417 : using namespace stoc_javaloader;
418 :
419 : static struct ImplementationEntry g_entries[] =
420 : {
421 : {
422 : JavaComponentLoader_CreateInstance, loader_getImplementationName,
423 : loader_getSupportedServiceNames, createSingleComponentFactory,
424 : 0 , 0
425 : },
426 : { 0, 0, 0, 0, 0, 0 }
427 : };
428 :
429 : extern "C"
430 : {
431 2 : SAL_DLLPUBLIC_EXPORT void * SAL_CALL javaloader_component_getFactory(
432 : const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
433 : {
434 2 : return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
435 : }
436 : }
437 :
438 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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