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79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
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* Copyright (c) 1995, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "jni.h"
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#include "jni_util.h"
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#include "jvm.h"
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#include "java_lang_SecurityManager.h"
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#include "java_lang_ClassLoader.h"
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/*
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* Make sure a security manager instance is initialized.
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* TRUE means OK, FALSE means not.
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*/
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static jboolean
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check(JNIEnv *env, jobject this)
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{
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static jfieldID initField = 0;
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jboolean initialized = JNI_FALSE;
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if (initField == 0) {
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jclass clazz = (*env)->FindClass(env, "java/lang/SecurityManager");
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if (clazz == 0) {
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(*env)->ExceptionClear(env);
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return JNI_FALSE;
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}
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initField = (*env)->GetFieldID(env, clazz, "initialized", "Z");
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if (initField == 0) {
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(*env)->ExceptionClear(env);
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return JNI_FALSE;
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}
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}
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initialized = (*env)->GetBooleanField(env, this, initField);
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if (initialized == JNI_TRUE) {
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return JNI_TRUE;
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} else {
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jclass securityException =
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(*env)->FindClass(env, "java/lang/SecurityException");
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if (securityException != 0) {
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(*env)->ThrowNew(env, securityException,
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"security manager not initialized.");
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}
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return JNI_FALSE;
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}
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}
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JNIEXPORT jobjectArray JNICALL
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Java_java_lang_SecurityManager_getClassContext(JNIEnv *env, jobject this)
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{
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if (!check(env, this)) {
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return NULL; /* exception */
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}
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return JVM_GetClassContext(env);
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}
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