151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 2001, 2003, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include "jni.h" 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski#include "jvm.h" 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 29cab01ac294bb8ded259851673baa4c6ca226f828Steven Moreland#include <nativehelper/JNIHelp.h> 308d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski 318d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski#define NATIVE_METHOD(className, functionName, signature) \ 328d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski{ #functionName, signature, (void*)(className ## _ ## functionName) } 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskistatic jclass noSuchMethodErrCl; 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 364ef72d32afd6f6b81306b2664a6f3f30f6103ebfPrzemyslaw Szczepaniakstatic void ObjectStreamClass_initNative(JNIEnv *env) 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski{ 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jclass cl = (*env)->FindClass(env, "java/lang/NoSuchMethodError"); 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (cl == NULL) { /* exception thrown */ 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return; 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski noSuchMethodErrCl = (*env)->NewGlobalRef(env, cl); 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Class: java_io_ObjectStreamClass 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Method: hasStaticInitializer 48fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak * Signature: (Ljava/lang/Class;Z)Z 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns true if the given class defines a <clinit>()V method; returns false 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * otherwise. 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr JastrzebskiJNIEXPORT jboolean JNICALL 548d05e88f57c1ea5543d4012687c70cd64efcada0Piotr JastrzebskiObjectStreamClass_hasStaticInitializer(JNIEnv *env, jclass this, 55fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak jclass clazz, 56fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak jboolean checkSuperclass) 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski{ 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jclass superCl = NULL; 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jmethodID superClinitId = NULL; 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jmethodID clinitId = 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->GetStaticMethodID(env, clazz, "<clinit>", "()V"); 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (clinitId == NULL) { /* error thrown */ 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jthrowable th = (*env)->ExceptionOccurred(env); 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->ExceptionClear(env); /* normal return */ 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (!(*env)->IsInstanceOf(env, th, noSuchMethodErrCl)) { 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->Throw(env, th); 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return JNI_FALSE; 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 71fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak // Android-changed, if checkSuperclass == true, remove check for 72fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak // superclass clinitId != child clinitId. 73fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak // We're returning true to enable deserializing classes without explicit serialVersionID 74fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak // that would fail in this check (b/29064453). 75fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak if (checkSuperclass == JNI_FALSE) { 76fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak return JNI_TRUE; 77fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak } 78fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /* 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Check superclass for static initializer as well--if the same method ID 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is returned, then the static initializer is from a superclass. 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Empirically, this step appears to be unnecessary in 1.4; however, the 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * JNI spec makes no guarantee that GetStaticMethodID will not return the 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ID for a superclass initializer. 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if ((superCl = (*env)->GetSuperclass(env, clazz)) == NULL) { 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return JNI_TRUE; 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski superClinitId = 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->GetStaticMethodID(env, superCl, "<clinit>", "()V"); 9151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (superClinitId == NULL) { /* error thrown */ 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski jthrowable th = (*env)->ExceptionOccurred(env); 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->ExceptionClear(env); /* normal return */ 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (!(*env)->IsInstanceOf(env, th, noSuchMethodErrCl)) { 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski (*env)->Throw(env, th); 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 9751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return JNI_TRUE; 9851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 9951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return (clinitId != superClinitId); 10151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 1028d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski 1038d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebskistatic JNINativeMethod gMethods[] = { 104fd17eabf30cec65a5cfb4df1a298fcf515ef7c93Przemyslaw Szczepaniak NATIVE_METHOD(ObjectStreamClass, hasStaticInitializer, "(Ljava/lang/Class;Z)Z"), 1058d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski}; 1068d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski 1078d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebskivoid register_java_io_ObjectStreamClass(JNIEnv* env) { 1088d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski jniRegisterNativeMethods(env, "java/io/ObjectStreamClass", gMethods, NELEM(gMethods)); 1094ef72d32afd6f6b81306b2664a6f3f30f6103ebfPrzemyslaw Szczepaniak ObjectStreamClass_initNative(env); 1108d05e88f57c1ea5543d4012687c70cd64efcada0Piotr Jastrzebski} 111