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