/*
* 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.commons.io.serialization;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Random;
import org.junit.Before;
import org.junit.Test;
/** This is more an example than a test - deserialize our {@link MoreComplexObject}
* to verify which settings it requires, as the object uses a number of primitive
* and java.* member objects.
*/
public class MoreComplexObjectTest extends ClosingBase {
private InputStream inputStream;
private MoreComplexObject original;
@Override
@Before
public void setup() throws IOException {
original = new MoreComplexObject();
final ByteArrayOutputStream bos = willClose(new ByteArrayOutputStream());
final ObjectOutputStream oos = willClose(new ObjectOutputStream(bos));
oos.writeObject(original);
inputStream = willClose(new ByteArrayInputStream(bos.toByteArray()));
}
private void assertSerialization(ObjectInputStream ois) throws ClassNotFoundException, IOException {
final MoreComplexObject copy = (MoreComplexObject) (ois.readObject());
assertEquals("Expecting same data after deserializing", original.toString(), copy.toString());
}
/** Trusting java.lang.* and the array variants of that means we have
* to define a number of accept classes explicitly. Quite safe but
* might become a bit verbose.
*/
@Test
public void trustJavaLang() throws IOException, ClassNotFoundException {
assertSerialization(willClose(
new ValidatingObjectInputStream(inputStream)
.accept(MoreComplexObject.class, ArrayList.class, Random.class)
.accept("java.lang.*","[Ljava.lang.*")
));
}
/** Trusting java.* is probably reasonable and avoids having to be too
* detailed in the accepts.
*/
@Test
public void trustJavaIncludingArrays() throws IOException, ClassNotFoundException {
assertSerialization(willClose(
new ValidatingObjectInputStream(inputStream)
.accept(MoreComplexObject.class)
.accept("java.*","[Ljava.*")
));
}
/** Here we accept everything but reject specific classes, using a pure
* blacklist mode.
*
* That's not as safe as it's hard to get an exhaustive blacklist, but
* might be ok in controlled environments.
*/
@Test
public void useBlacklist() throws IOException, ClassNotFoundException {
final String [] blacklist = {
"org.apache.commons.collections.functors.InvokerTransformer",
"org.codehaus.groovy.runtime.ConvertedClosure",
"org.codehaus.groovy.runtime.MethodClosure",
"org.springframework.beans.factory.ObjectFactory"
};
assertSerialization(willClose(
new ValidatingObjectInputStream(inputStream)
.accept("*")
.reject(blacklist)
));
}
}