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/*
* Copyright (c) 2022 Contributors to the Eclipse Foundation.
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.gjc.util;
import static java.util.logging.Level.FINEST;
import java.io.IOException;
import java.io.Serializable;
import java.io.StringBufferInputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.Enumeration;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.gjc.common.DataSourceObjectBuilder;
import com.sun.logging.LogDomains;
import jakarta.resource.ResourceException;
/**
* Execute the methods based on the parameters.
*
* @author Binod P.G
* @version 1.0, 02/07/23
*/
public class MethodExecutor implements Serializable {
private static final long serialVersionUID = 1L;
private static Logger _logger = LogDomains.getLogger(MethodExecutor.class, LogDomains.RSR_LOGGER);
private static StringManager sm = StringManager.getManager(DataSourceObjectBuilder.class);
private final static String newline = System.getProperty("line.separator");
/**
* Exceute a simple set Method.
*
* @param value Value to be set.
* @param method <code>Method</code> object.
* @param obj Object on which the method to be executed.
* @throws <code>ResourceException</code>, in case of the mismatch of parameter
* values or a security violation.
*/
public void runJavaBeanMethod(String value, Method method, Object obj) throws ResourceException {
if (value == null || value.trim().equals("")) {
return;
}
Class<?>[] parameters = method.getParameterTypes();
if (parameters.length == 1) {
Object[] values = new Object[1];
values[0] = convertType(parameters[0], value);
final ResourceException[] exception = new ResourceException[1];
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Object run() {
try {
method.setAccessible(true);
method.invoke(obj, values);
} catch (IllegalAccessException | InvocationTargetException | SecurityException iae) {
_logger.log(Level.SEVERE, "jdbc.exc_jb_val", value);
_logger.log(Level.SEVERE, "", iae);
String msg = sm.getString("me.access_denied", method.getName());
exception[0] = new ResourceException(msg);
} catch (IllegalArgumentException ie) {
_logger.log(Level.SEVERE, "jdbc.exc_jb_val", value);
_logger.log(Level.SEVERE, "", ie);
String msg = sm.getString("me.illegal_args", method.getName());
exception[0] = new ResourceException(msg);
}
return null;
}
});
if (exception[0] != null) {
throw exception[0];
}
}
}
/**
* Executes the method.
*
* @param method <code>Method</code> object.
* @param obj Object on which the method to be executed.
* @param values Parameter values for executing the method.
* @throws <code>ResourceException</code>, in case of the mismatch of parameter
* values or a security violation.
*/
public void runMethod(Method method, Object obj, List<String> values) throws ResourceException {
Class<?>[] parameters = method.getParameterTypes();
if (values.size() != parameters.length) {
return;
}
Object[] actualValues = new Object[parameters.length];
for (int i = 0; i < parameters.length; i++) {
String val = values.get(i);
if (val.trim().equals("NULL")) {
actualValues[i] = null;
} else {
actualValues[i] = convertType(parameters[i], val);
}
}
final ResourceException[] exception = new ResourceException[1];
AccessController.doPrivileged(new PrivilegedAction<>() {
@Override
public Object run() {
try {
method.setAccessible(true);
method.invoke(obj, actualValues);
} catch (IllegalAccessException | InvocationTargetException | SecurityException iae) {
_logger.log(Level.SEVERE, "jdbc.exc_jb_val", values);
_logger.log(Level.SEVERE, "", iae);
String msg = sm.getString("me.access_denied", method.getName());
exception[0] = new ResourceException(msg);
} catch (IllegalArgumentException ie) {
_logger.log(Level.SEVERE, "jdbc.exc_jb_val", values);
_logger.log(Level.SEVERE, "", ie);
String msg = sm.getString("me.illegal_args", method.getName());
exception[0] = new ResourceException(msg);
}
return null;
}
});
if (exception[0] != null) {
throw exception[0];
}
}
/**
* Converts the type from String to the Class type.
*
* @param type Class name to which the conversion is required.
* @param parameter String value to be converted.
* @return Converted value.
* @throws <code>ResourceException</code>, in case of the mismatch of parameter
* values or a security violation.
*/
private Object convertType(Class<?> type, String parameter) throws ResourceException {
try {
String typeName = type.getName();
if (typeName.equals("java.lang.String") || typeName.equals("java.lang.Object")) {
return parameter;
}
if (typeName.equals("int") || typeName.equals("java.lang.Integer")) {
return Integer.valueOf(parameter);
}
if (typeName.equals("short") || typeName.equals("java.lang.Short")) {
return Short.valueOf(parameter);
}
if (typeName.equals("byte") || typeName.equals("java.lang.Byte")) {
return Byte.valueOf(parameter);
}
if (typeName.equals("long") || typeName.equals("java.lang.Long")) {
return Long.valueOf(parameter);
}
if (typeName.equals("float") || typeName.equals("java.lang.Float")) {
return Float.valueOf(parameter);
}
if (typeName.equals("double") || typeName.equals("java.lang.Double")) {
return Double.valueOf(parameter);
}
if (typeName.equals("java.math.BigDecimal")) {
return new java.math.BigDecimal(parameter);
}
if (typeName.equals("java.math.BigInteger")) {
return new java.math.BigInteger(parameter);
}
if (typeName.equals("boolean") || typeName.equals("java.lang.Boolean")) {
return Boolean.valueOf(parameter);
}
if (typeName.equals("java.util.Properties")) {
Properties p = stringToProperties(parameter);
if (p != null)
return p;
}
return parameter;
} catch (NumberFormatException nfe) {
_logger.log(Level.SEVERE, "jdbc.exc_nfe", parameter);
String msg = sm.getString("me.invalid_param", parameter);
throw new ResourceException(msg);
}
}
public Object invokeMethod(Object object, String methodName, Class<?>[] valueTypes, Object... values) throws ResourceException {
Object returnValue = null;
Method actualMethod;
try {
actualMethod = object.getClass().getMethod(methodName, valueTypes);
} catch (NoSuchMethodException ex) {
throw new ResourceException(ex);
} catch (SecurityException ex) {
throw new ResourceException(ex);
}
if (actualMethod != null) {
try {
returnValue = AccessController.doPrivileged((PrivilegedExceptionAction<Object>) () -> {
actualMethod.setAccessible(true);
return actualMethod.invoke(object, values);
});
} catch (PrivilegedActionException e) {
if (e.getException() != null) {
throw new ResourceException(e.getException());
} else {
throw new ResourceException(e);
}
}
}
return returnValue;
}
private Properties stringToProperties(String parameter) {
if (parameter == null)
return null;
String s = parameter.trim();
if (!((s.startsWith("(") && s.endsWith(")")))) {
return null; // not a "( .... )" syntax
}
s = s.substring(1, s.length() - 1);
s = s.replaceAll("(?<!\\\\),", newline); // , -> \n
s = s.replaceAll("\\\\,", ","); // escape-"," -> ,
Properties p = new Properties();
Properties prop = new Properties();
try {
p.load(new StringBufferInputStream(s));
} catch (IOException ex) {
_logger.log(FINEST, "Parsing string to properties: {0}", ex.getMessage());
return null;
}
// cleanup trailing whitespace in value
for (Enumeration propKeys = p.propertyNames(); propKeys.hasMoreElements();) {
String tmpKey = (String) propKeys.nextElement();
String tmpValue = p.getProperty(tmpKey);
// Trim spaces
tmpValue = tmpValue.trim();
// Quoted string.
if (tmpValue.length() > 1 && tmpValue.startsWith("\"") && tmpValue.endsWith("\"")) {
tmpValue = tmpValue.substring(1, tmpValue.length() - 1);
}
prop.put(tmpKey, tmpValue);
}
if (_logger.isLoggable(FINEST)) {
_logger.log(FINEST, "Parsing string to properties: {0}size:{1}", new Object[] { prop, prop.size() });
}
return prop;
}
}