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