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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.serialization;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufOutputStream;
import io.netty.buffer.Unpooled;
import io.netty.util.internal.ObjectUtil;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

/**
 * An {@link ObjectOutput} which is interoperable with {@link ObjectDecoder}
 * and {@link ObjectDecoderInputStream}.
 * 

* Security: serialization can be a security liability, * and should not be used without defining a list of classes that are * allowed to be desirialized. Such a list can be specified with the * jdk.serialFilter system property, for instance. * See the * serialization filtering article for more information. * * @deprecated This class has been deprecated with no replacement, * because serialization can be a security liability */ @Deprecated public class ObjectEncoderOutputStream extends OutputStream implements ObjectOutput { private final DataOutputStream out; private final int estimatedLength; /** * Creates a new {@link ObjectOutput} with the estimated length of 512 * bytes. * * @param out * the {@link OutputStream} where the serialized form will be * written out */ public ObjectEncoderOutputStream(OutputStream out) { this(out, 512); } /** * Creates a new {@link ObjectOutput}. * * @param out * the {@link OutputStream} where the serialized form will be * written out * * @param estimatedLength * the estimated byte length of the serialized form of an object. * If the length of the serialized form exceeds this value, the * internal buffer will be expanded automatically at the cost of * memory bandwidth. If this value is too big, it will also waste * memory bandwidth. To avoid unnecessary memory copy or allocation * cost, please specify the properly estimated value. */ public ObjectEncoderOutputStream(OutputStream out, int estimatedLength) { ObjectUtil.checkNotNull(out, "out"); ObjectUtil.checkPositiveOrZero(estimatedLength, "estimatedLength"); if (out instanceof DataOutputStream) { this.out = (DataOutputStream) out; } else { this.out = new DataOutputStream(out); } this.estimatedLength = estimatedLength; } @Override public void writeObject(Object obj) throws IOException { ByteBuf buf = Unpooled.buffer(estimatedLength); try { // Suppress a warning about resource leak since oout is closed below ObjectOutputStream oout = new CompactObjectOutputStream( new ByteBufOutputStream(buf)); try { oout.writeObject(obj); oout.flush(); } finally { oout.close(); } int objectSize = buf.readableBytes(); writeInt(objectSize); buf.getBytes(0, this, objectSize); } finally { buf.release(); } } @Override public void write(int b) throws IOException { out.write(b); } @Override public void close() throws IOException { out.close(); } @Override public void flush() throws IOException { out.flush(); } public final int size() { return out.size(); } @Override public void write(byte[] b, int off, int len) throws IOException { out.write(b, off, len); } @Override public void write(byte[] b) throws IOException { out.write(b); } @Override public final void writeBoolean(boolean v) throws IOException { out.writeBoolean(v); } @Override public final void writeByte(int v) throws IOException { out.writeByte(v); } @Override public final void writeBytes(String s) throws IOException { out.writeBytes(s); } @Override public final void writeChar(int v) throws IOException { out.writeChar(v); } @Override public final void writeChars(String s) throws IOException { out.writeChars(s); } @Override public final void writeDouble(double v) throws IOException { out.writeDouble(v); } @Override public final void writeFloat(float v) throws IOException { out.writeFloat(v); } @Override public final void writeInt(int v) throws IOException { out.writeInt(v); } @Override public final void writeLong(long v) throws IOException { out.writeLong(v); } @Override public final void writeShort(int v) throws IOException { out.writeShort(v); } @Override public final void writeUTF(String str) throws IOException { out.writeUTF(str); } }





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