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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 0 : static Sequence< OUString > loader_getSupportedServiceNames()
71 : {
72 0 : Sequence< OUString > seqNames(2);
73 : seqNames.getArray()[0] = OUString(
74 0 : RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.loader.Java") );
75 0 : seqNames.getArray()[1] = OUString(
76 0 : RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.loader.Java2") );
77 0 : return seqNames;
78 : }
79 :
80 0 : static OUString loader_getImplementationName()
81 : {
82 : return OUString(
83 0 : RTL_CONSTASCII_USTRINGPARAM( "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 com::sun::star::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);
110 : virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName)
111 : throw(RuntimeException);
112 : virtual Sequence<OUString> SAL_CALL getSupportedServiceNames()
113 : throw(RuntimeException);
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);
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);
124 : };
125 :
126 0 : const css::uno::Reference<XImplementationLoader> & JavaComponentLoader::getJavaLoader()
127 : {
128 0 : MutexGuard aGuard(getInitMutex());
129 :
130 0 : if (m_javaLoader.is())
131 0 : return m_javaLoader;
132 :
133 0 : uno_Environment * pJava_environment = NULL;
134 0 : uno_Environment * pUno_environment = NULL;
135 0 : 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 0 : m_xComponentContext->getValueByName(
141 : OUString(RTL_CONSTASCII_USTRINGPARAM(
142 : "/singletons/"
143 0 : "com.sun.star.java.theJavaVirtualMachine"))),
144 0 : 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 0 : Sequence<sal_Int8> processID(17);
151 0 : rtl_getGlobalProcessId(reinterpret_cast<sal_uInt8 *>(processID.getArray()));
152 0 : 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 : OSL_ENSURE(sizeof (sal_Int64)
160 : >= sizeof (jvmaccess::UnoVirtualMachine *),
161 : "Pointer cannot be represented as sal_Int64");
162 : sal_Int64 nPointer = reinterpret_cast< sal_Int64 >(
163 0 : static_cast< jvmaccess::UnoVirtualMachine * >(0));
164 0 : javaVM_xJavaVM->getJavaVM(processID) >>= nPointer;
165 : rtl::Reference< jvmaccess::UnoVirtualMachine > xVirtualMachine(
166 0 : reinterpret_cast< jvmaccess::UnoVirtualMachine * >(nPointer));
167 0 : if (!xVirtualMachine.is())
168 : {
169 : //throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
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 0 : xVirtualMachine->getVirtualMachine());
183 0 : JNIEnv * pJNIEnv = aGuard2.getEnvironment();
184 :
185 : // instantiate the java JavaLoader
186 0 : jclass jcClassLoader = pJNIEnv->FindClass("java/lang/ClassLoader");
187 0 : if(pJNIEnv->ExceptionOccurred())
188 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
189 : "javaloader error - could not find class java/lang/ClassLoader")),
190 0 : css::uno::Reference<XInterface>());
191 : jmethodID jmLoadClass = pJNIEnv->GetMethodID(
192 : jcClassLoader, "loadClass",
193 0 : "(Ljava/lang/String;)Ljava/lang/Class;");
194 0 : if(pJNIEnv->ExceptionOccurred())
195 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
196 : "javaloader error - could not find method java/lang/ClassLoader.loadClass")),
197 0 : css::uno::Reference<XInterface>());
198 : jvalue arg;
199 : arg.l = pJNIEnv->NewStringUTF(
200 0 : "com.sun.star.comp.loader.JavaLoader");
201 0 : if(pJNIEnv->ExceptionOccurred())
202 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
203 : "javaloader error - could not create string")),
204 0 : css::uno::Reference<XInterface>());
205 : jclass jcJavaLoader = static_cast< jclass >(
206 : pJNIEnv->CallObjectMethodA(
207 0 : static_cast< jobject >(xVirtualMachine->getClassLoader()),
208 0 : jmLoadClass, &arg));
209 0 : if(pJNIEnv->ExceptionOccurred())
210 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
211 : "javaloader error - could not find class com/sun/star/comp/loader/JavaLoader")),
212 0 : css::uno::Reference<XInterface>());
213 0 : jmethodID jmJavaLoader_init = pJNIEnv->GetMethodID(jcJavaLoader, "<init>", "()V");
214 0 : if(pJNIEnv->ExceptionOccurred())
215 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
216 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed")),
217 0 : css::uno::Reference<XInterface>());
218 0 : jobject joJavaLoader = pJNIEnv->NewObject(jcJavaLoader, jmJavaLoader_init);
219 0 : if(pJNIEnv->ExceptionOccurred())
220 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
221 : "javaloader error - instantiation of com.sun.star.comp.loader.JavaLoader failed")),
222 0 : css::uno::Reference<XInterface>());
223 :
224 : // map the java JavaLoader to this environment
225 0 : OUString sJava(RTL_CONSTASCII_USTRINGPARAM("java"));
226 : uno_getEnvironment(&pJava_environment, sJava.pData,
227 0 : xVirtualMachine.get());
228 0 : if(!pJava_environment)
229 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
230 0 : "javaloader error - no Java environment available")), css::uno::Reference<XInterface>());
231 :
232 : // why is there no convinient contructor?
233 0 : OUString sCppu_current_lb_name(RTL_CONSTASCII_USTRINGPARAM(CPPU_CURRENT_LANGUAGE_BINDING_NAME));
234 0 : uno_getEnvironment(&pUno_environment, sCppu_current_lb_name.pData, NULL);
235 0 : if(!pUno_environment)
236 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
237 0 : "javaloader error - no C++ environment available")), css::uno::Reference<XInterface>());
238 :
239 0 : Mapping java_curr(pJava_environment, pUno_environment);
240 0 : if(!java_curr.is())
241 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
242 0 : "javaloader error - no mapping from java to C++ ")), css::uno::Reference<XInterface>());
243 :
244 : // release java environment
245 0 : pJava_environment->release(pJava_environment);
246 0 : pJava_environment = NULL;
247 :
248 : // release uno environment
249 0 : pUno_environment->release(pUno_environment);
250 0 : pUno_environment = NULL;
251 :
252 0 : getCppuType((css::uno::Reference<XImplementationLoader> *) 0).
253 0 : getDescription((typelib_TypeDescription **) & pType_XImplementationLoader);
254 0 : if(!pType_XImplementationLoader)
255 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
256 : "javaloader error - no type information for XImplementationLoader")),
257 0 : css::uno::Reference<XInterface>());
258 :
259 : m_javaLoader = css::uno::Reference<XImplementationLoader>(reinterpret_cast<XImplementationLoader *>(
260 0 : java_curr.mapInterface(joJavaLoader, pType_XImplementationLoader)));
261 0 : pJNIEnv->DeleteLocalRef( joJavaLoader );
262 0 : if(!m_javaLoader.is())
263 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
264 : "javaloader error - mapping of java XImplementationLoader to c++ failed")),
265 0 : css::uno::Reference<XInterface>());
266 :
267 0 : typelib_typedescription_release(reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
268 0 : pType_XImplementationLoader = NULL;
269 : }
270 0 : catch (jvmaccess::VirtualMachine::AttachGuard::CreationException &)
271 : {
272 : throw RuntimeException(
273 : OUString(RTL_CONSTASCII_USTRINGPARAM(
274 : "jvmaccess::VirtualMachine::AttachGuard"
275 0 : "::CreationException")),0);
276 : }
277 :
278 : // set the service manager at the javaloader
279 0 : css::uno::Reference<XInitialization> javaLoader_XInitialization(m_javaLoader, UNO_QUERY);
280 0 : if(!javaLoader_XInitialization.is())
281 : throw RuntimeException(OUString(RTL_CONSTASCII_USTRINGPARAM(
282 : "javaloader error - initialization of java javaloader failed, no XInitialization")),
283 0 : css::uno::Reference<XInterface>());
284 :
285 0 : Any any;
286 : any <<= css::uno::Reference<XMultiComponentFactory>(
287 0 : m_xComponentContext->getServiceManager());
288 :
289 0 : javaLoader_XInitialization->initialize(Sequence<Any>(&any, 1));
290 : }
291 0 : catch(RuntimeException &) {
292 0 : if(pJava_environment)
293 0 : pJava_environment->release(pJava_environment);
294 :
295 0 : if(pUno_environment)
296 0 : pUno_environment->release(pUno_environment);
297 :
298 0 : if(pType_XImplementationLoader)
299 : typelib_typedescription_release(
300 0 : reinterpret_cast<typelib_TypeDescription *>(pType_XImplementationLoader));
301 0 : throw;
302 : }
303 : OSL_TRACE("javaloader.cxx: mapped javaloader - 0x%x", m_javaLoader.get());
304 0 : return m_javaLoader;
305 : }
306 :
307 0 : JavaComponentLoader::JavaComponentLoader(const css::uno::Reference<XComponentContext> & xCtx) throw(RuntimeException) :
308 0 : m_xComponentContext(xCtx)
309 :
310 : {
311 :
312 0 : }
313 :
314 0 : JavaComponentLoader::~JavaComponentLoader() throw()
315 : {
316 0 : }
317 :
318 : // XServiceInfo
319 0 : OUString SAL_CALL JavaComponentLoader::getImplementationName()
320 : throw(::com::sun::star::uno::RuntimeException)
321 : {
322 0 : return loader_getImplementationName();
323 : }
324 :
325 0 : sal_Bool SAL_CALL JavaComponentLoader::supportsService(const OUString & ServiceName)
326 : throw(::com::sun::star::uno::RuntimeException)
327 : {
328 0 : sal_Bool bSupport = sal_False;
329 :
330 0 : Sequence<OUString> aSNL = getSupportedServiceNames();
331 0 : const OUString * pArray = aSNL.getArray();
332 0 : for(sal_Int32 i = 0; i < aSNL.getLength() && !bSupport; ++ i)
333 0 : bSupport = pArray[i] == ServiceName;
334 :
335 0 : return bSupport;
336 : }
337 :
338 0 : Sequence<OUString> SAL_CALL JavaComponentLoader::getSupportedServiceNames()
339 : throw(::com::sun::star::uno::RuntimeException)
340 : {
341 0 : return loader_getSupportedServiceNames();
342 : }
343 :
344 :
345 :
346 : // XImplementationLoader
347 0 : sal_Bool SAL_CALL JavaComponentLoader::writeRegistryInfo(
348 : const css::uno::Reference<XRegistryKey> & xKey, const OUString & blabla,
349 : const OUString & rLibName)
350 : throw(CannotRegisterImplementationException, RuntimeException)
351 : {
352 0 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
353 0 : if (loader.is())
354 0 : return loader->writeRegistryInfo(xKey, blabla, rLibName);
355 : else
356 : throw CannotRegisterImplementationException(
357 0 : OUString(RTL_CONSTASCII_USTRINGPARAM("Could not create Java implementation loader")), NULL);
358 : }
359 :
360 :
361 0 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader::activate(
362 : const OUString & rImplName, const OUString & blabla, const OUString & rLibName,
363 : const css::uno::Reference<XRegistryKey> & xKey)
364 : throw(CannotActivateFactoryException, RuntimeException)
365 : {
366 0 : const css::uno::Reference<XImplementationLoader> & loader = getJavaLoader();
367 0 : if (loader.is())
368 0 : return loader->activate(rImplName, blabla, rLibName, xKey);
369 : else
370 : throw CannotActivateFactoryException(
371 0 : OUString(RTL_CONSTASCII_USTRINGPARAM("Could not create Java implementation loader")), NULL);
372 : }
373 :
374 0 : static Mutex & getInitMutex()
375 : {
376 : static Mutex * pMutex = 0;
377 0 : if( ! pMutex )
378 : {
379 0 : MutexGuard guard( Mutex::getGlobalMutex() );
380 0 : if( ! pMutex )
381 : {
382 0 : static Mutex mutex;
383 0 : pMutex = &mutex;
384 0 : }
385 : }
386 0 : return *pMutex;
387 : }
388 :
389 0 : css::uno::Reference<XInterface> SAL_CALL JavaComponentLoader_CreateInstance(const css::uno::Reference<XComponentContext> & xCtx) throw(Exception)
390 : {
391 0 : css::uno::Reference<XInterface> xRet;
392 :
393 : try {
394 0 : MutexGuard guard( getInitMutex() );
395 : // The javaloader is never destroyed and there can be only one!
396 : // Note that the first context wins ....
397 : static css::uno::Reference< XInterface > *pStaticRef = 0;
398 0 : if( pStaticRef )
399 : {
400 0 : xRet = *pStaticRef;
401 : }
402 : else
403 : {
404 0 : xRet = *new JavaComponentLoader(xCtx);
405 0 : pStaticRef = new css::uno::Reference< XInterface > ( xRet );
406 0 : }
407 : }
408 0 : catch(const RuntimeException & runtimeException) {
409 0 : OString message = OUStringToOString(runtimeException.Message, RTL_TEXTENCODING_ASCII_US);
410 0 : osl_trace("javaloader - could not init javaloader cause of %s", message.getStr());
411 0 : throw;
412 : }
413 :
414 0 : return xRet;
415 : }
416 :
417 : } //end namespace
418 :
419 :
420 : using namespace stoc_javaloader;
421 :
422 : static struct ImplementationEntry g_entries[] =
423 : {
424 : {
425 : JavaComponentLoader_CreateInstance, loader_getImplementationName,
426 : loader_getSupportedServiceNames, createSingleComponentFactory,
427 : 0 , 0
428 : },
429 : { 0, 0, 0, 0, 0, 0 }
430 : };
431 :
432 : extern "C"
433 : {
434 0 : SAL_DLLPUBLIC_EXPORT void * SAL_CALL javaloader_component_getFactory(
435 : const sal_Char * pImplName, void * pServiceManager, void * pRegistryKey )
436 : {
437 0 : return component_getFactoryHelper( pImplName, pServiceManager, pRegistryKey , g_entries );
438 : }
439 : }
440 :
441 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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