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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 : #include <cppuhelper/servicefactory.hxx>
32 :
33 : #ifdef LINUX
34 : #undef minor
35 : #undef major
36 : #endif
37 :
38 : #include <com/sun/star/java/XJavaVM.hpp>
39 :
40 : #include <com/sun/star/lang/XMultiComponentFactory.hpp>
41 :
42 : #include "jni.h"
43 :
44 : #include <cppuhelper/factory.hxx>
45 : #include <cppuhelper/implementationentry.hxx>
46 :
47 : #include <cppuhelper/implbase2.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 : seqNames.getArray()[0] = OUString(
76 0 : RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.loader.Java") );
77 0 : seqNames.getArray()[1] = OUString(
78 0 : RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.loader.Java2") );
79 0 : return seqNames;
80 : }
81 :
82 0 : static OUString loader_getImplementationName()
83 : {
84 : return OUString(
85 0 : RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.comp.stoc.JavaComponentLoader" ) );
86 : }
87 :
88 : class JavaComponentLoader : public WeakImplHelper2<XImplementationLoader, XServiceInfo>
89 : {
90 : css::uno::Reference<XComponentContext> m_xComponentContext;
91 : /** Do not use m_javaLoader directly. Instead use getJavaLoader.
92 : */
93 : css::uno::Reference<XImplementationLoader> m_javaLoader;
94 : /** The retured Reference contains a null pointer if the office is not configured
95 : to run java.
96 :
97 : @exception com::sun::star::uno::RuntimeException
98 : If the Java implementation of the loader could not be obtained, for reasons other
99 : then that java was not configured the RuntimeException is thrown.
100 : */
101 : const css::uno::Reference<XImplementationLoader> & getJavaLoader();
102 :
103 :
104 : public:
105 : JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx)
106 : throw(RuntimeException);
107 : virtual ~JavaComponentLoader() throw();
108 :
109 : public:
110 : // XServiceInfo
111 : virtual OUString SAL_CALL getImplementationName() throw(RuntimeException);
112 : virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName)
113 : throw(RuntimeException);
114 : virtual Sequence<OUString> SAL_CALL getSupportedServiceNames()
115 : throw(RuntimeException);
116 :
117 : // XImplementationLoader
118 : virtual css::uno::Reference<XInterface> SAL_CALL activate(
119 : const OUString& implementationName, const OUString& implementationLoaderUrl,
120 : const OUString& locationUrl, const css::uno::Reference<XRegistryKey>& xKey)
121 : throw(CannotActivateFactoryException, RuntimeException);
122 : virtual sal_Bool SAL_CALL writeRegistryInfo(
123 : const css::uno::Reference<XRegistryKey>& xKey,
124 : const OUString& implementationLoaderUrl, const OUString& locationUrl)
125 : throw(CannotRegisterImplementationException, RuntimeException);
126 : };
127 :
128 0 : const css::uno::Reference<XImplementationLoader> & JavaComponentLoader::getJavaLoader()
129 : {
130 0 : MutexGuard aGuard(getInitMutex());
131 :
132 0 : if (m_javaLoader.is())
133 0 : return m_javaLoader;
134 :
135 0 : uno_Environment * pJava_environment = NULL;
136 0 : uno_Environment * pUno_environment = NULL;
137 0 : typelib_InterfaceTypeDescription * pType_XImplementationLoader = 0;
138 :
139 : try {
140 : // get a java vm, where we can create a loader
141 : css::uno::Reference<XJavaVM> javaVM_xJavaVM(
142 0 : m_xComponentContext->getValueByName(
143 : OUString(RTL_CONSTASCII_USTRINGPARAM(
144 : "/singletons/"
145 0 : "com.sun.star.java.theJavaVirtualMachine"))),
146 0 : UNO_QUERY_THROW);
147 :
148 : // Use the special protocol of XJavaVM.getJavaVM: If the passed in
149 : // process ID has an extra 17th byte of value one, the returned any
150 : // contains a pointer to a jvmaccess::UnoVirtualMachine, instead of the
151 : // underlying JavaVM pointer:
152 0 : Sequence<sal_Int8> processID(17);
153 0 : rtl_getGlobalProcessId(reinterpret_cast<sal_uInt8 *>(processID.getArray()));
154 0 : processID[16] = 1;
155 :
156 : // We get a non-refcounted pointer to a jvmaccess::UnoVirtualMachine
157 : // from the XJavaVM service (the pointer is guaranteed to be valid
158 : // as long as our reference to the XJavaVM service lasts), and
159 : // convert the non-refcounted pointer into a refcounted one
160 : // immediately:
161 : OSL_ENSURE(sizeof (sal_Int64)
162 : >= sizeof (jvmaccess::UnoVirtualMachine *),
163 : "Pointer cannot be represented as sal_Int64");
164 : sal_Int64 nPointer = reinterpret_cast< sal_Int64 >(
165 0 : static_cast< jvmaccess::UnoVirtualMachine * >(0));
166 0 : javaVM_xJavaVM->getJavaVM(processID) >>= nPointer;
167 : rtl::Reference< jvmaccess::UnoVirtualMachine > xVirtualMachine(
168 0 : reinterpret_cast< jvmaccess::UnoVirtualMachine * >(nPointer));
169 0 : if (!xVirtualMachine.is())
170 : {
171 : //throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
172 : // "javaloader error - JavaVirtualMachine service could not provide a VM")),
173 : // css::uno::Reference<XInterface>());
174 : // We must not throw a RuntimeException, because this might end the applications.
175 : // It is ok if java components
176 : // are not working because the office can be installed without Java support.
177 : SAL_WARN("stoc", "getJavaVM returned null");
178 0 : return m_javaLoader; // null-ref
179 : }
180 :
181 : try
182 : {
183 : jvmaccess::VirtualMachine::AttachGuard aGuard2(
184 0 : xVirtualMachine->getVirtualMachine());
185 0 : JNIEnv * pJNIEnv = aGuard2.getEnvironment();
186 :
187 : // instantiate the java JavaLoader
188 0 : jclass jcClassLoader = pJNIEnv->FindClass("java/lang/ClassLoader");
189 0 : if(pJNIEnv->ExceptionOccurred())
190 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
191 : "javaloader error - could not find class java/lang/ClassLoader")),
192 0 : css::uno::Reference<XInterface>());
193 : jmethodID jmLoadClass = pJNIEnv->GetMethodID(
194 : jcClassLoader, "loadClass",
195 0 : "(Ljava/lang/String;)Ljava/lang/Class;");
196 0 : if(pJNIEnv->ExceptionOccurred())
197 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
198 : "javaloader error - could not find method java/lang/ClassLoader.loadClass")),
199 0 : css::uno::Reference<XInterface>());
200 : jvalue arg;
201 : arg.l = pJNIEnv->NewStringUTF(
202 0 : "com.sun.star.comp.loader.JavaLoader");
203 0 : if(pJNIEnv->ExceptionOccurred())
204 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
205 : "javaloader error - could not create string")),
206 0 : css::uno::Reference<XInterface>());
207 : jclass jcJavaLoader = static_cast< jclass >(
208 : pJNIEnv->CallObjectMethodA(
209 0 : static_cast< jobject >(xVirtualMachine->getClassLoader()),
210 0 : jmLoadClass, &arg));
211 0 : if(pJNIEnv->ExceptionOccurred())
212 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
213 : "javaloader error - could not find class com/sun/star/comp/loader/JavaLoader")),
214 0 : css::uno::Reference<XInterface>());
215 0 : jmethodID jmJavaLoader_init = pJNIEnv->GetMethodID(jcJavaLoader, "<init>", "()V");
216 0 : if(pJNIEnv->ExceptionOccurred())
217 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
218 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed")),
219 0 : css::uno::Reference<XInterface>());
220 0 : jobject joJavaLoader = pJNIEnv->NewObject(jcJavaLoader, jmJavaLoader_init);
221 0 : if(pJNIEnv->ExceptionOccurred())
222 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
223 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed")),
224 0 : css::uno::Reference<XInterface>());
225 :
226 : // map the java JavaLoader to this environment
227 0 : OUString sJava(RTL_CONSTASCII_USTRINGPARAM("java"));
228 : uno_getEnvironment(&pJava_environment, sJava.pData,
229 0 : xVirtualMachine.get());
230 0 : if(!pJava_environment)
231 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
232 0 : "javaloader error - no Java environment available")), css::uno::Reference<XInterface>());
233 :
234 : // why is there no convinient contructor?
235 0 : OUString sCppu_current_lb_name(RTL_CONSTASCII_USTRINGPARAM(CPPU_CURRENT_LANGUAGE_BINDING_NAME));
236 0 : uno_getEnvironment(&pUno_environment, sCppu_current_lb_name.pData, NULL);
237 0 : if(!pUno_environment)
238 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
239 0 : "javaloader error - no C++ environment available")), css::uno::Reference<XInterface>());
240 :
241 0 : Mapping java_curr(pJava_environment, pUno_environment);
242 0 : if(!java_curr.is())
243 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
244 0 : "javaloader error - no mapping from java to C++ ")), css::uno::Reference<XInterface>());
245 :
246 : // release java environment
247 0 : pJava_environment->release(pJava_environment);
248 0 : pJava_environment = NULL;
249 :
250 : // release uno environment
251 0 : pUno_environment->release(pUno_environment);
252 0 : pUno_environment = NULL;
253 :
254 0 : getCppuType((css::uno::Reference<XImplementationLoader> *) 0).
255 0 : getDescription((typelib_TypeDescription **) & pType_XImplementationLoader);
256 0 : if(!pType_XImplementationLoader)
257 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
258 : "javaloader error - no type information for XImplementationLoader")),
259 0 : css::uno::Reference<XInterface>());
260 :
261 : m_javaLoader = css::uno::Reference<XImplementationLoader>(reinterpret_cast<XImplementationLoader *>(
262 0 : java_curr.mapInterface(joJavaLoader, pType_XImplementationLoader)));
263 0 : pJNIEnv->DeleteLocalRef( joJavaLoader );
264 0 : if(!m_javaLoader.is())
265 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
266 : "javaloader error - mapping of java XImplementationLoader to c++ failed")),
267 0 : css::uno::Reference<XInterface>());
268 :
269 0 : typelib_typedescription_release(reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
270 0 : pType_XImplementationLoader = NULL;
271 : }
272 0 : catch (jvmaccess::VirtualMachine::AttachGuard::CreationException &)
273 : {
274 : throw RuntimeException(
275 : OUString(RTL_CONSTASCII_USTRINGPARAM(
276 : "jvmaccess::VirtualMachine::AttachGuard"
277 0 : "::CreationException")),0);
278 : }
279 :
280 : // set the service manager at the javaloader
281 0 : css::uno::Reference<XInitialization> javaLoader_XInitialization(m_javaLoader, UNO_QUERY);
282 0 : if(!javaLoader_XInitialization.is())
283 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
284 : "javaloader error - initialization of java javaloader failed, no XInitialization")),
285 0 : css::uno::Reference<XInterface>());
286 :
287 0 : Any any;
288 : any <<= css::uno::Reference<XMultiComponentFactory>(
289 0 : m_xComponentContext->getServiceManager());
290 :
291 0 : javaLoader_XInitialization->initialize(Sequence<Any>(&any, 1));
292 : }
293 0 : catch(RuntimeException &) {
294 0 : if(pJava_environment)
295 0 : pJava_environment->release(pJava_environment);
296 :
297 0 : if(pUno_environment)
298 0 : pUno_environment->release(pUno_environment);
299 :
300 0 : if(pType_XImplementationLoader)
301 : typelib_typedescription_release(
302 0 : reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
303 0 : throw;
304 : }
305 : OSL_TRACE("javaloader.cxx: mapped javaloader - 0x%x", m_javaLoader.get());
306 0 : return m_javaLoader;
307 : }
308 :
309 0 : JavaComponentLoader::JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx) throw(RuntimeException) :
310 0 : m_xComponentContext(xCtx)
311 :
312 : {
313 :
314 0 : }
315 :
316 0 : JavaComponentLoader::~JavaComponentLoader() throw()
317 : {
318 0 : }
319 :
320 : // XServiceInfo
321 0 : OUString SAL_CALL JavaComponentLoader::getImplementationName()
322 : throw(::com::sun::star::uno::RuntimeException)
323 : {
324 0 : return loader_getImplementationName();
325 : }
326 :
327 0 : sal_Bool SAL_CALL JavaComponentLoader::supportsService(const OUString & ServiceName)
328 : throw(::com::sun::star::uno::RuntimeException)
329 : {
330 0 : sal_Bool bSupport = sal_False;
331 :
332 0 : Sequence<OUString> aSNL = getSupportedServiceNames();
333 0 : const OUString * pArray = aSNL.getArray();
334 0 : for(sal_Int32 i = 0; i < aSNL.getLength() && !bSupport; ++ i)
335 0 : bSupport = pArray[i] == ServiceName;
336 :
337 0 : return bSupport;
338 : }
339 :
340 0 : Sequence<OUString> SAL_CALL JavaComponentLoader::getSupportedServiceNames()
341 : throw(::com::sun::star::uno::RuntimeException)
342 : {
343 0 : return loader_getSupportedServiceNames();
344 : }
345 :
346 :
347 :
348 : // XImplementationLoader
349 0 : sal_Bool SAL_CALL JavaComponentLoader::writeRegistryInfo(
350 : const css::uno::Reference<XRegistryKey> & xKey, const OUString & blabla,
351 : const OUString & rLibName)
352 : throw(CannotRegisterImplementationException, RuntimeException)
353 : {
354 0 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
355 0 : if (loader.is())
356 0 : return loader->writeRegistryInfo(xKey, blabla, rLibName);
357 : else
358 : throw CannotRegisterImplementationException(
359 0 : OUString(RTL_CONSTASCII_USTRINGPARAM("Could not create Java implementation loader")), NULL);
360 : }
361 :
362 :
363 0 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader::activate(
364 : const OUString & rImplName, const OUString & blabla, const OUString & rLibName,
365 : const css::uno::Reference<XRegistryKey> & xKey)
366 : throw(CannotActivateFactoryException, RuntimeException)
367 : {
368 0 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
369 0 : if (loader.is())
370 0 : return loader->activate(rImplName, blabla, rLibName, xKey);
371 : else
372 : throw CannotActivateFactoryException(
373 0 : OUString(RTL_CONSTASCII_USTRINGPARAM("Could not create Java implementation loader")), NULL);
374 : }
375 :
376 0 : static Mutex & getInitMutex()
377 : {
378 : static Mutex * pMutex = 0;
379 0 : if( ! pMutex )
380 : {
381 0 : MutexGuard guard( Mutex::getGlobalMutex() );
382 0 : if( ! pMutex )
383 : {
384 0 : static Mutex mutex;
385 0 : pMutex = &mutex;
386 0 : }
387 : }
388 0 : return *pMutex;
389 : }
390 :
391 0 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader_CreateInstance(const css::uno::Reference<XComponentContext> & xCtx) throw(Exception)
392 : {
393 0 : css::uno::Reference<XInterface> xRet;
394 :
395 : try {
396 0 : MutexGuard guard( getInitMutex() );
397 : // The javaloader is never destroyed and there can be only one!
398 : // Note that the first context wins ....
399 : static css::uno::Reference< XInterface > *pStaticRef = 0;
400 0 : if( pStaticRef )
401 : {
402 0 : xRet = *pStaticRef;
403 : }
404 : else
405 : {
406 0 : xRet = *new JavaComponentLoader(xCtx);
407 0 : pStaticRef = new css::uno::Reference< XInterface > ( xRet );
408 0 : }
409 : }
410 0 : catch(const RuntimeException & runtimeException) {
411 0 : OString message = OUStringToOString(runtimeException.Message, RTL_TEXTENCODING_ASCII_US);
412 0 : osl_trace("javaloader - could not init javaloader cause of %s", message.getStr());
413 0 : throw;
414 : }
415 :
416 0 : return xRet;
417 : }
418 :
419 : } //end namespace
420 :
421 :
422 : using namespace stoc_javaloader;
423 :
424 : static struct ImplementationEntry g_entries[] =
425 : {
426 : {
427 : JavaComponentLoader_CreateInstance, loader_getImplementationName,
428 : loader_getSupportedServiceNames, createSingleComponentFactory,
429 : 0 , 0
430 : },
431 : { 0, 0, 0, 0, 0, 0 }
432 : };
433 :
434 : extern "C"
435 : {
436 0 : SAL_DLLPUBLIC_EXPORT void * SAL_CALL javaloader_component_getFactory(
437 : const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
438 : {
439 0 : return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
440 : }
441 : }
442 :
443 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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