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