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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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.jboss.marshalling;
import java.io.IOException;
import java.io.InvalidClassException;
import java.io.ObjectInputStream;
import java.util.Objects;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* An abstract implementation of the {@code Unmarshaller} interface. Most of the
* write methods delegate directly to the current data output.
*/
public abstract class AbstractUnmarshaller extends AbstractObjectInput implements Unmarshaller {
/** The configured class externalizer factory. */
protected final ClassExternalizerFactory classExternalizerFactory;
/** The configured stream header. */
protected final StreamHeader streamHeader;
/** The configured class resolver. */
protected final ClassResolver classResolver;
/** The configured object resolver. */
protected final ObjectResolver objectResolver;
/** The configured object pre resolver. */
protected final ObjectResolver objectPreResolver;
/** The configured class table. */
protected final ClassTable classTable;
/** The configured object table. */
protected final ObjectTable objectTable;
/** The configured exception listener. */
protected final ExceptionListener exceptionListener;
/** The configured serializability checker. */
protected final SerializabilityChecker serializabilityChecker;
/** The configured unmarshalling filter */
protected final UnmarshallingObjectInputFilter unmarshallingFilter;
/** The configured version. */
protected final int configuredVersion;
/**
* Construct a new unmarshaller instance.
*
* @param marshallerFactory the marshaller factory
* @param configuration
*/
protected AbstractUnmarshaller(final AbstractMarshallerFactory marshallerFactory, final MarshallingConfiguration configuration) {
super(configuration.getBufferSize());
final ClassExternalizerFactory classExternalizerFactory = configuration.getClassExternalizerFactory();
this.classExternalizerFactory = classExternalizerFactory == null ? marshallerFactory.getDefaultClassExternalizerFactory() : classExternalizerFactory;
final StreamHeader streamHeader = configuration.getStreamHeader();
this.streamHeader = streamHeader == null ? marshallerFactory.getDefaultStreamHeader() : streamHeader;
final ClassResolver classResolver = configuration.getClassResolver();
final ClassNameTransformer classNameTransformer = configuration.getClassNameTransformer();
if (classNameTransformer != null) {
this.classResolver = new TransformingClassResolver(classResolver == null ? marshallerFactory.getDefaultClassResolver() : classResolver, classNameTransformer, true);
} else {
this.classResolver = classResolver == null ? marshallerFactory.getDefaultClassResolver() : classResolver;
}
final ObjectResolver objectResolver = configuration.getObjectResolver();
this.objectResolver = objectResolver == null ? marshallerFactory.getDefaultObjectResolver() : objectResolver;
final ObjectResolver objectPreResolver = configuration.getObjectPreResolver();
this.objectPreResolver = objectPreResolver == null ? marshallerFactory.getDefaultObjectResolver() : objectPreResolver;
final ClassTable classTable = configuration.getClassTable();
this.classTable = classTable == null ? marshallerFactory.getDefaultClassTable() : classTable;
final ObjectTable objectTable = configuration.getObjectTable();
this.objectTable = objectTable == null ? marshallerFactory.getDefaultObjectTable() : objectTable;
final ExceptionListener exceptionListener = configuration.getExceptionListener();
this.exceptionListener = exceptionListener == null ? ExceptionListener.NO_OP : exceptionListener;
final SerializabilityChecker serializabilityChecker = configuration.getSerializabilityChecker();
this.serializabilityChecker = serializabilityChecker == null ? SerializabilityChecker.DEFAULT : serializabilityChecker;
final UnmarshallingObjectInputFilter unmarshallingFilter = configuration.getUnmarshallingFilter();
this.unmarshallingFilter = unmarshallingFilter == null ? UnmarshallingObjectInputFilter.ACCEPTING : unmarshallingFilter;
final int configuredVersion = configuration.getVersion();
this.configuredVersion = configuredVersion == -1 ? marshallerFactory.getDefaultVersion() : configuredVersion;
}
/** {@inheritDoc} */
public void start(final ByteInput byteInput) throws IOException {
this.byteInput = byteInput;
position = limit = 0;
streamHeader.readHeader(this);
}
/** {@inheritDoc} */
public void finish() throws IOException {
limit = -1;
position = 0;
byteInput = null;
clearClassCache();
}
protected final void filterCheck(final Class unmarshallClass, final long arrayLength, final long depth,
final long references, final long streamBytes) throws InvalidClassException {
if (unmarshallingFilter != UnmarshallingObjectInputFilter.ACCEPTING) {
UnmarshallingObjectInputFilter.FilterInfo filterInfo = new FilterInputImpl(unmarshallClass, arrayLength, depth, references, streamBytes);
UnmarshallingObjectInputFilter.Status status = null;
RuntimeException ex = null;
try {
status = unmarshallingFilter.checkInput(filterInfo);
} catch (RuntimeException re) {
ex = re;
InvalidClassException ice = new InvalidClassException(String.format("Filtering failed for %s", filterInfo));
ice.initCause(re);
throw ice;
} finally {
Logging.logFilterResponse(filterInfo, status, ex);
}
if (status == UnmarshallingObjectInputFilter.Status.REJECTED) {
throw new InvalidClassException(String.format("Filtering rejected %s", status));
}
}
}
protected static void setObjectInputStreamFilter(ObjectInputStream ois, UnmarshallingObjectInputFilter filter) {
JDKSpecific.setObjectInputStreamFilter(ois, filter);
}
private static class FilterInputImpl implements UnmarshallingObjectInputFilter.FilterInfo {
private final Class unmarshallClass;
private final long arrayLength;
private final long depth;
private final long references;
private final long streamBytes;
private FilterInputImpl(final Class unmarshallClass, final long arrayLength, final long depth,
final long references, final long streamBytes) {
this.unmarshallClass = unmarshallClass;
this.arrayLength = arrayLength;
this.depth = depth;
this.references = references;
this.streamBytes = streamBytes;
}
@Override
public Class getUnmarshalledClass() {
return unmarshallClass;
}
@Override
public long getArrayLength() {
return arrayLength;
}
@Override
public long getDepth() {
return depth;
}
@Override
public long getReferences() {
return references;
}
@Override
public long getStreamBytes() {
return streamBytes;
}
@Override
public String toString() {
final StringBuilder builder = new StringBuilder();
builder.append(super.toString()).append(": ");
if (unmarshallClass != null) {
builder.append("unmarshallClass=<").append(unmarshallClass.toString()).append("> ");
}
builder.append("arrayLength=<").append(arrayLength).append("> ");
builder.append("depth=<").append(depth).append("> ");
builder.append("references=<").append(references).append("> ");
builder.append("streamBytes=<").append(streamBytes).append("> ");
return builder.toString();
}
}
private static class Logging {
static final Logger marshallingLogger = Logger.getLogger("org.jboss.marshalling");
private static void logFilterResponse(final UnmarshallingObjectInputFilter.FilterInfo filterInfo,
final UnmarshallingObjectInputFilter.Status status,
final RuntimeException ex) {
// Replicate logging message format from native deserialization filtering mechanism, except that the
// logger name is "org.jboss.marshalling" instead of "java.io.serialization".
if (status == null || status == UnmarshallingObjectInputFilter.Status.REJECTED) {
logFilterResponse(filterInfo, status, ex, Level.FINER);
} else {
logFilterResponse(filterInfo, status, ex, Level.FINEST);
}
}
private static void logFilterResponse(final UnmarshallingObjectInputFilter.FilterInfo filterInfo,
final UnmarshallingObjectInputFilter.Status status,
final RuntimeException ex,
final Level level) {
if (marshallingLogger.isLoggable(level)) {
String message = String.format("UnmarshallingFilter %s: %s, array length: %d, nRefs: %d, depth: %d, bytes: %d, ex: %s",
status, filterInfo.getUnmarshalledClass(), filterInfo.getArrayLength(), filterInfo.getReferences(),
filterInfo.getDepth(), filterInfo.getStreamBytes(), Objects.toString(ex, "n/a"));
if (Level.FINEST.equals(level)) {
marshallingLogger.log(level, message, ex);
} else {
marshallingLogger.log(level, message);
}
}
}
}
}
