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