freemarker.template.utility.SecurityUtilities 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 freemarker.template.utility;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import freemarker.log.Logger;
/**
*/
public class SecurityUtilities {
private static final Logger LOG = Logger.getLogger("freemarker.security");
private SecurityUtilities() {
}
public static String getSystemProperty(final String key) {
return (String) AccessController.doPrivileged(
new PrivilegedAction()
{
@Override
public Object run() {
return System.getProperty(key);
}
});
}
public static String getSystemProperty(final String key, final String defValue) {
try {
return (String) AccessController.doPrivileged(
new PrivilegedAction()
{
@Override
public Object run() {
return System.getProperty(key, defValue);
}
});
} catch (AccessControlException e) {
LOG.warn("Insufficient permissions to read system property " +
StringUtil.jQuoteNoXSS(key) + ", using default value " +
StringUtil.jQuoteNoXSS(defValue));
return defValue;
}
}
public static Integer getSystemProperty(final String key, final int defValue) {
try {
return (Integer) AccessController.doPrivileged(
new PrivilegedAction()
{
@Override
public Object run() {
return Integer.getInteger(key, defValue);
}
});
} catch (AccessControlException e) {
LOG.warn("Insufficient permissions to read system property " +
StringUtil.jQuote(key) + ", using default value " + defValue);
return Integer.valueOf(defValue);
}
}
}