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org.apache.openjpa.lib.util.J2DoPrivHelper Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.lib.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.InetAddress;
import java.net.JarURLConnection;
import java.net.MalformedURLException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;
import java.net.URLConnection;
import java.net.UnknownHostException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedExceptionAction;
import java.security.ProtectionDomain;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Set;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.zip.ZipFile;
import jakarta.validation.ConstraintViolation;
import jakarta.validation.Validation;
import jakarta.validation.Validator;
import jakarta.validation.ValidatorFactory;
/**
* Helper class to obtain the Privilege(Exception)Action object to perform
* Java 2 doPrivilege security sensitive function call in the following
* methods:
*
* AccessibleObject.setAccessible
* Class.forName
* Class.getClassLoader
* Class.getDeclaredField
* Class.getDeclaredFields
* Class.getDeclaredMethod
* Class.getDeclaredMethods
* Class.getProtectionDomain
* Class.getResource
* Class.newInstance
* ClassLoader.getParent
* ClassLoader.getResource
* ClassLoader.getResources
* ClassLoader.getSystemClassLoader
* File.deleteOnExit
* File.delete
* File.exists
* File.getAbsoluteFile
* File.getAbsolutePath
* File.getCanonicalPath
* File.listFiles
* File.length
* File.isDirectory
* File.mkdirs
* File.renameTo
* File.toURL
* FileInputStream new
* FileOutputStream new
* System.getProperties
* InetAddress.getByName
* MultiClassLoader new
* ServerSocket new
* Socket new
* Socket.accept
* System.getProperty
* Thread.getContextClassLoader
* Thread.setContextClassLoader
* Thread new
* TemporaryClassLoader new
* URL.openStream
* URLConnection.getContent
* ZipFile new
* AnnotatedElement.getAnnotations
* AnnotatedElement.getDeclaredAnnotations
* AnnotatedElement.isAnnotationPresent
* jakarta.validation.Validator.validate
* jakarta.validation.Validation.buildDefaultValidatorFactory
*
*
* If these methods are used, the following sample usage patterns should be
* followed to ensure proper privilege is granted:
*
* 1) No security risk method call. E.g.
*
* private static final String SEP = J2DoPrivHelper.getLineSeparator();
*
* 2) Methods with no exception thrown. PrivilegedAction is returned from
* J2DoPrivHelper.*Action(). E.g.
*
* ClassLoader loader = AccessController.doPrivileged(
* J2DoPrivHelper.getClassLoaderAction(clazz));
*
* ClassLoader loader = (ClassLoader) (System.getSecurityManager() == null)
* ? clazz.getClassLoader()
* : AccessController.doPrivileged(
* J2DoPrivHelper.getClassLoaderAction(clazz));
* 3) Methods with exception thrown. PrivilegedExceptionAction is returned
* from J2DoPrivHelper.*Action(). E.g.
*
* try {
* method = AccessController.doPrivileged(
* J2DoPrivHelper.getDeclaredMethodAction(clazz, name, parameterType));
* } catch (PrivilegedActionException pae) {
* throw (NoSuchMethodException) pae.getException();
* }
*
* try {
* method = (System.getSecurityManager() == null)
* ? clazz.getDeclaredMethod(name,parameterType)
* : AccessController.doPrivileged(
* J2DoPrivHelper.getDeclaredMethodAction(
* clazz, name, parameterType));
* } catch (PrivilegedActionException pae) {
* throw (NoSuchMethodException) pae.getException()
* }
*
* @author Albert Lee
*/
public abstract class J2DoPrivHelper {
private static String lineSeparator = null;
private static String pathSeparator = null;
/**
* Return the value of the "line.separator" system property.
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*/
public static String getLineSeparator() {
if (lineSeparator == null) {
lineSeparator =
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
return System.getProperty("line.separator");
}
});
}
return lineSeparator;
}
/**
* Return the value of the "path.separator" system property.
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*/
public static String getPathSeparator() {
if (pathSeparator == null) {
pathSeparator =
AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
return System.getProperty("path.separator");
}
});
}
return pathSeparator;
}
/**
* Return a PrivilegeAction object for aObj.setAccessible().
*
* Requires security policy: 'permission java.lang.reflect.ReflectPermission
* "suppressAccessChecks";'
*/
public static PrivilegedAction setAccessibleAction(
final AccessibleObject aObj, final boolean flag) {
return new PrivilegedAction() {
@Override
public Object run() {
aObj.setAccessible(flag);
return (Object) null;
}
};
}
/**
* Return a PrivilegeAction object for Class.forName().
*
* Notes: doPriv of Class.forName call is required only if the input
* classloader argument is null. E.g.
*
* Class.forName("x", false, Collection.class.getClassLoader());
*
* Requires security policy: 'permission java.lang.RuntimePermission
* "getClassLoader";'
*
* @return Class
*/
public static PrivilegedExceptionAction> getForNameAction(
final String className, final boolean initializeBoolean,
final ClassLoader classLoader) {
return new PrivilegedExceptionAction>() {
@Override
public Class run() throws ClassNotFoundException {
return Class.forName(className, initializeBoolean, classLoader);
}
};
}
/**
* Return a PrivilegeAction object for clazz.getClassloader().
*
* Notes: No doPrivilege wrapping is required in the caller if:
* "the caller's class loader is not null and the caller's class loader
* is not the same as or an ancestor of the class loader for the class
* whose class loader is requested". E.g.
*
* this.getClass().getClassLoader();
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getClassLoader";'
*
* @return Classloader
*/
public static PrivilegedAction getClassLoaderAction(
final Class clazz) {
return new PrivilegedAction() {
@Override
public ClassLoader run() {
return clazz.getClassLoader();
}
};
}
/**
* Return a PrivilegedExceptionAction object for clazz.getDeclaredField().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Field
* @exception NoSuchFieldException
*/
public static PrivilegedExceptionAction getDeclaredFieldAction(
final Class clazz, final String name) {
return new PrivilegedExceptionAction() {
@Override
public Field run() throws NoSuchFieldException {
return clazz.getDeclaredField(name);
}
};
}
/**
* Return a PrivilegeAction object for class.getDeclaredFields().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Field[]
*/
public static PrivilegedAction getDeclaredFieldsAction(
final Class clazz) {
return new PrivilegedAction() {
@Override
public Field[] run() {
return clazz.getDeclaredFields();
}
};
}
/**
* Return a PrivilegedExceptionAction object for clazz.getDeclaredMethod().
*
* Requires security policy
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Method
* @exception NoSuchMethodException
*/
public static PrivilegedExceptionAction
getDeclaredMethodAction(
final Class clazz, final String name,
final Class[] parameterTypes) {
return new PrivilegedExceptionAction() {
@Override
public Method run() throws NoSuchMethodException {
return clazz.getDeclaredMethod(name, parameterTypes);
}
};
}
/**
* Return a PrivilegeAction object for clazz.getDeclaredMethods().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Method[]
*/
public static PrivilegedAction getDeclaredMethodsAction(
final Class clazz) {
return new PrivilegedAction() {
@Override
public Method[] run() {
return clazz.getDeclaredMethods();
}
};
}
/**
* Return a PrivilegeAction object for clazz.getResource().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return URL
*/
public static PrivilegedAction getResourceAction(
final Class clazz, final String resource) {
return new PrivilegedAction() {
@Override
public URL run() {
return clazz.getResource(resource);
}
};
}
/**
* Return a PrivilegedExceptionAction object for clazz.newInstance().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getClassLoader";'
*
* @return A new instance of the provided class.
* @exception IllegalAccessException
* @exception InstantiationException
*/
public static PrivilegedExceptionAction newInstanceAction(
final Class clazz) throws IllegalAccessException,
InstantiationException {
return new PrivilegedExceptionAction() {
@Override
public T run() throws IllegalAccessException,
InstantiationException {
if (!Modifier.isAbstract(clazz.getModifiers())) {
return clazz.newInstance();
} else {
try {
return (T)clazz.getMethod("newInstance",
new Class[]{}).invoke(null, new Object[]{});
} catch (Throwable t) {
throw new InstantiationException(t.toString());
}
}
}
};
}
/**
* Return a PrivilegeAction object for class.getProtectionDomain().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getProtectionDomain";'
*
* @return ProtectionDomain
*/
public static PrivilegedAction getProtectionDomainAction(
final Class clazz) {
return new PrivilegedAction() {
@Override
public ProtectionDomain run() {
return clazz.getProtectionDomain();
}
};
}
/**
* Return a PrivilegeAction object for loader.getParent().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getClassLoader";'
*
* @return ClassLoader
*/
public static PrivilegedAction getParentAction(
final ClassLoader loader) {
return new PrivilegedAction() {
@Override
public ClassLoader run() {
return loader.getParent();
}
};
}
/**
* Return a PrivilegeAction object for loader.getResource().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return URL
*/
public static PrivilegedAction getResourceAction(
final ClassLoader loader, final String resource) {
return new PrivilegedAction() {
@Override
public URL run() {
return loader.getResource(resource);
}
};
}
/**
* Return a PrivilegedExceptionAction object for loader.getResources().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Enumeration
* @exception IOException
*/
public static PrivilegedExceptionAction>
getResourcesAction(
final ClassLoader loader, final String resource) throws IOException {
return new PrivilegedExceptionAction>() {
@Override
public Enumeration run() throws IOException {
return loader.getResources(resource);
}
};
}
/**
* Return a PrivilegeAction object for ClassLoader.getSystemClassLoader().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getClassLoader";'
*
* @return ClassLoader
*/
public static PrivilegedAction
getSystemClassLoaderAction() {
return new PrivilegedAction() {
@Override
public ClassLoader run() {
return ClassLoader.getSystemClassLoader();
}
};
}
/**
* Return a PrivilegeAction object for f.delete().
*
* Requires security policy:
* 'permission java.io.FilePermission "delete";'
*
* @return Boolean
*/
public static PrivilegedAction deleteAction(final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return f.delete() ? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegeAction object for f.exists().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Boolean
*/
public static PrivilegedAction existsAction(final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
try {
return f.exists() ? Boolean.TRUE : Boolean.FALSE;
} catch (NullPointerException npe) {
return Boolean.FALSE;
}
}
};
}
/**
* Return a PrivilegeAction object for f.deleteOnExit().
*
* Requires security policy:
* 'permission java.io.FilePermission "delete";'
*/
public static PrivilegedAction deleteOnExitAction(
final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
f.deleteOnExit();
return Boolean.TRUE;
}
};
}
/**
* Return a PrivilegeAction object for f.getAbsoluteFile().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return File
*/
public static PrivilegedAction getAbsoluteFileAction(
final File f) {
return new PrivilegedAction() {
@Override
public File run() {
return f.getAbsoluteFile();
}
};
}
/**
* Return a PrivilegeAction object for f.getAbsolutePath().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return String
*/
public static PrivilegedAction
getAbsolutePathAction(final File f) {
return new PrivilegedAction() {
@Override
public String run() {
return f.getAbsolutePath();
}
};
}
/**
* Return a PrivilegedExceptionAction object for f.getCanonicalPath().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return String
* @exception IOException
*/
public static PrivilegedExceptionAction
getCanonicalPathAction(
final File f) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public String run() throws IOException {
return f.getCanonicalPath();
}
};
}
/**
* Return a PrivilegeAction object for f.isDirectory().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Boolean
*/
public static PrivilegedAction
isDirectoryAction(final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return f.isDirectory() ? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegeAction object for f.isFile().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Boolean
*/
public static PrivilegedAction isFileAction(final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return f.isFile() ? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegeAction object for f.length().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Long
*/
public static PrivilegedAction lengthAction(final File f) {
return new PrivilegedAction() {
@Override
public Long run() {
return f.length();
}
};
}
/**
* Return a PrivilegeAction object for f.listFiles().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return File[]
*/
public static PrivilegedAction
listFilesAction(final File f) {
return new PrivilegedAction() {
@Override
public File [] run() {
return f.listFiles();
}
};
}
/**
* Return a PrivilegeAction object for f.mkdirs().
*
* Requires security policy:
* 'permission java.io.FilePermission "write";'
*
* @return Boolean
*/
public static PrivilegedAction mkdirsAction(final File f) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return f.mkdirs() ? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegeAction object for f.renameTo().
*
* Requires security policy:
* 'permission java.io.FilePermission "write";'
*
* @return Boolean
*/
public static PrivilegedAction renameToAction(
final File from, final File to) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return from.renameTo(to) ? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegedExceptionAction object for f.toURL().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return URL
* @throws MalformedURLException
*/
public static PrivilegedExceptionAction toURLAction(
final File file)
throws MalformedURLException {
return new PrivilegedExceptionAction() {
@Override
public URL run() throws MalformedURLException {
return file.toURL();
}
};
}
/**
* Return a PrivilegedExceptionAction object for new FileInputStream().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return FileInputStream
* @throws FileNotFoundException
*/
public static PrivilegedExceptionAction
newFileInputStreamAction(
final File f) throws FileNotFoundException {
return new PrivilegedExceptionAction() {
@Override
public FileInputStream run() throws FileNotFoundException {
return new FileInputStream(f);
}
};
}
/**
* Return a PrivilegedExceptionAction object for new FileOutputStream().
*
* Requires security policy:
* 'permission java.io.FilePermission "write";'
*
* @return FileOutputStream
* @throws FileNotFoundException
*/
public static PrivilegedExceptionAction
newFileOutputStreamAction(
final File f) throws FileNotFoundException {
return new PrivilegedExceptionAction() {
@Override
public FileOutputStream run() throws FileNotFoundException {
return new FileOutputStream(f);
}
};
}
/**
* Return a PrivilegedExceptionAction object for new FileOutputStream().
*
* Requires security policy:
* 'permission java.io.FilePermission "write";'
*
* @return FileOutputStream
* @throws FileNotFoundException
*/
public static PrivilegedExceptionAction
newFileOutputStreamAction(
final String f, final boolean append) throws FileNotFoundException {
return new PrivilegedExceptionAction() {
@Override
public FileOutputStream run() throws FileNotFoundException {
return new FileOutputStream(f, append);
}
};
}
/**
* Return a PrivilegedExceptionAction object for InetAdress.getByName().
*
* Requires security policy:
* 'permission java.net.SocketPermission "connect";'
*
* @return InetAddress
* @throws UnknownHostException
*/
public static PrivilegedExceptionAction getByNameAction(
final String hostname) throws UnknownHostException {
return new PrivilegedExceptionAction() {
@Override
public InetAddress run() throws UnknownHostException {
return InetAddress.getByName(hostname);
}
};
}
/**
* Return a PrivilegedExceptionAction object for new Socket().
*
* Requires security policy:
* 'permission java.net.SocketPermission "connect";'
*
* @return Socket
* @throws IOException
*/
public static PrivilegedExceptionAction newSocketAction(
final InetAddress host, final int port) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public Socket run() throws IOException {
return new Socket(host, port);
}
};
}
/**
* Return a PrivilegedExceptionAction object for new ServerSocket().
*
* Requires security policy:
* 'permission java.net.SocketPermission "listen";'
*
* @return ServerSocket
* @throws IOException
*/
public static PrivilegedExceptionAction
newServerSocketAction(
final int port) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public ServerSocket run() throws IOException {
return new ServerSocket(port);
}
};
}
/**
* Return a PrivilegedExceptionAction object for ServerSocket.accept().
*
* Requires security policy:
* 'permission java.net.SocketPermission "listen";'
*
* @return Socket
* @throws IOException
*/
public static PrivilegedExceptionAction acceptAction(
final ServerSocket ss) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public Socket run() throws IOException {
return ss.accept();
}
};
}
/**
* Return a PrivilegeAction object for System.getProperties().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return Properties
*/
public static PrivilegedAction getPropertiesAction() {
return new PrivilegedAction() {
@Override
public Properties run() {
return System.getProperties();
}
};
}
/**
* Return a PrivilegeAction object for System.getProperty().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return String
*/
public static PrivilegedAction getPropertyAction(
final String name) {
return new PrivilegedAction() {
@Override
public String run() {
return System.getProperty(name);
}
};
}
/**
* Return a PrivilegeAction object for System.getProperty().
*
* Requires security policy:
* 'permission java.util.PropertyPermission "read";'
*
* @return String
*/
public static PrivilegedAction getPropertyAction(
final String name, final String def) {
return new PrivilegedAction() {
@Override
public String run() {
return System.getProperty(name, def);
}
};
}
/**
* Return a PrivilegeAction object for Thread.currentThread
* .getContextClassLoader().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "getClassLoader";'
*
* @return ClassLoader
*/
public static PrivilegedAction
getContextClassLoaderAction() {
return new PrivilegedAction() {
@Override
public ClassLoader run() {
return Thread.currentThread().getContextClassLoader();
}
};
}
/**
* Return a PrivilegeAction object for Thread.currentThread
* .setContextClassLoader().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "setContextClassLoader";'
*
* @return ClassLoader
*/
public static PrivilegedAction
setContextClassLoaderAction(final ClassLoader loader) {
return new PrivilegedAction() {
@Override
public Boolean run() {
Thread.currentThread().setContextClassLoader(loader);
return Boolean.TRUE;
}
};
}
/**
* Return a PrivilegedAction object for new Thread().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "modifyThreadGroup";'
* 'permission java.lang.RuntimePermission "modifyThread";'
*
* @return Thread
*/
public static PrivilegedAction newDaemonThreadAction(
final Runnable target, final String name) {
return new PrivilegedAction() {
@Override
public Thread run() {
Thread thread = new Thread(target, name);
thread.setDaemon(true);
return thread;
}
};
}
/**
* Return a PrivilegedExceptionAction object for url.openStream().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return InputStream
* @throws IOException
*/
public static PrivilegedExceptionAction openStreamAction(
final URL url) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public InputStream run() throws IOException {
return url.openStream();
}
};
}
/**
* Return a PrivilegedExceptionAction object con.getContent().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return Object
* @throws IOException
*/
public static PrivilegedExceptionAction getContentAction(
final URLConnection con) throws IOException {
return new PrivilegedExceptionAction() {
@Override
public Object run() throws IOException {
return con.getContent();
}
};
}
/**
* Return a PrivilegedExceptionAction object for new ZipFile().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return ZipFile
* @throws IOException
*/
public static PrivilegedExceptionAction newZipFileAction(
final File f)
throws IOException {
return new PrivilegedExceptionAction() {
@Override
public ZipFile run() throws IOException {
return new ZipFile(f);
}
};
}
/**
* Return a PrivilegedExceptionAction object for con.getJarFile().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return JarFile
* @throws IOException
*/
public static PrivilegedExceptionAction getJarFileAction(final JarURLConnection con)
throws IOException {
return new PrivilegedExceptionAction() {
@Override
public JarFile run() throws IOException {
return con.getJarFile();
}
};
}
/**
* Return a PrivilegedExceptionAction object for con.getJarEntry().
*
* Requires security policy:
* 'permission java.io.FilePermission "read";'
*
* @return JarEntry
* @throws IOException
*/
public static PrivilegedExceptionAction getJarEntryAction(final JarURLConnection con)
throws IOException {
return new PrivilegedExceptionAction() {
@Override
public JarEntry run() throws IOException {
return con.getJarEntry();
}
};
}
/**
* Return a PrivilegeAction object for new TemporaryClassLoader().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "createClassLoader";'
*
* @return TemporaryClassLoader
*/
public static PrivilegedAction
newTemporaryClassLoaderAction(
final ClassLoader parent) {
return new PrivilegedAction() {
@Override
public TemporaryClassLoader run() {
return new TemporaryClassLoader(parent);
}
};
}
/**
* Return a PrivilegeAction object for new MultiClassLoader().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "createClassLoader";'
*
* @return MultiClassLoader
*/
public static PrivilegedAction newMultiClassLoaderAction() {
return new PrivilegedAction() {
@Override
public MultiClassLoader run() {
return new MultiClassLoader();
}
};
}
/**
* Return a PrivilegeAction object for AnnotatedElement.getAnnotations().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Annotation[]
*/
public static PrivilegedAction getAnnotationsAction(
final AnnotatedElement element) {
return new PrivilegedAction() {
@Override
public Annotation [] run() {
return element.getAnnotations();
}
};
}
/**
* Return a PrivilegeAction object for
* AnnotatedElement.getDeclaredAnnotations().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Annotation[]
*/
public static PrivilegedAction
getDeclaredAnnotationsAction(
final AnnotatedElement element) {
return new PrivilegedAction() {
@Override
public Annotation [] run() {
return element.getDeclaredAnnotations();
}
};
}
/**
* Return a PrivilegeAction object for
* AnnotatedElement.isAnnotationPresent().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Boolean
*/
public static PrivilegedAction isAnnotationPresentAction(
final AnnotatedElement element,
final Class annotationClazz) {
return new PrivilegedAction() {
@Override
public Boolean run() {
return element.isAnnotationPresent(annotationClazz)
? Boolean.TRUE : Boolean.FALSE;
}
};
}
/**
* Return a PrivilegedAction object for
* AnnotatedElement.getAnnotation().
*
* Requires security policy:
* 'permission java.lang.RuntimePermission "accessDeclaredMembers";'
*
* @return Annotation
*/
public static PrivilegedAction
getAnnotationAction(
final AnnotatedElement element,
final Class annotationClazz) {
return new PrivilegedAction() {
@Override
public T run() {
return (T) element.getAnnotation(annotationClazz);
}
};
}
/**
* Return a PrivilegeAction object for jakarta.validation.Validator.validate().
*
* Requires security policy: 'permission java.lang.RuntimePermission "accessDeclaredMemeber";'
*/
public static PrivilegedAction>> validateAction(
final Validator validator, final T arg0, final Class[] groups) {
return new PrivilegedAction>>() {
@Override
public Set> run() {
return validator.validate(arg0, groups);
}
};
}
/**
* Return a PrivilegeAction object for jakarta.validation.Validation.buildDefaultValidatorFactory().
*
* Requires security policy: 'permission java.lang.RuntimePermission "createClassLoader";'
*/
public static PrivilegedAction buildDefaultValidatorFactoryAction() {
return new PrivilegedAction() {
@Override
public ValidatorFactory run() {
return Validation.buildDefaultValidatorFactory();
}
};
}
public static PrivilegedExceptionAction createURL(final String url) throws MalformedURLException {
return new PrivilegedExceptionAction() {
@Override
public URL run() throws MalformedURLException {
return new URL(url);
}
};
}
}
