org.apache.openjpa.util.BlacklistClassResolver 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.util;
public class BlacklistClassResolver {
public static final BlacklistClassResolver DEFAULT = new BlacklistClassResolver(
toArray(System.getProperty(
"openjpa.serialization.class.blacklist",
"org.codehaus.groovy.runtime.,org.apache.commons.collections.functors.,org.apache.xalan")),
toArray(System.getProperty("openjpa.serialization.class.whitelist")));
private final String[] blacklist;
private final String[] whitelist;
protected BlacklistClassResolver(final String[] blacklist, final String[] whitelist) {
this.whitelist = whitelist;
this.blacklist = blacklist;
}
protected boolean isBlacklisted(final String name) {
return (whitelist != null && !contains(whitelist, name)) || contains(blacklist, name);
}
public final String check(final String name) {
if (isBlacklisted(name)) {
throw new SecurityException(name + " is not whitelisted as deserialisable, prevented before loading.");
}
return name;
}
private static String[] toArray(final String property) {
return property == null ? null : property.split(" *, *");
}
private static boolean contains(final String[] list, String name) {
if (list != null) {
for (final String white : list) {
if (name.startsWith(white)) {
return true;
}
}
}
return false;
}
}