io.netty.handler.codec.socksx.v4.DefaultSocks4CommandRequest Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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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.socksx.v4;

import io.netty.handler.codec.DecoderResult;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.StringUtil;

import java.net.IDN;

/**
 * The default {@link Socks4CommandRequest}.
 */
public class DefaultSocks4CommandRequest extends AbstractSocks4Message implements Socks4CommandRequest {

    private final Socks4CommandType type;
    private final String dstAddr;
    private final int dstPort;
    private final String userId;

    /**
     * Creates a new instance.
     *
     * @param type the type of the request
     * @param dstAddr the {@code DSTIP} field of the request
     * @param dstPort the {@code DSTPORT} field of the request
     */
    public DefaultSocks4CommandRequest(Socks4CommandType type, String dstAddr, int dstPort) {
        this(type, dstAddr, dstPort, "");
    }

    /**
     * Creates a new instance.
     *
     * @param type the type of the request
     * @param dstAddr the {@code DSTIP} field of the request
     * @param dstPort the {@code DSTPORT} field of the request
     * @param userId the {@code USERID} field of the request
     */
    public DefaultSocks4CommandRequest(Socks4CommandType type, String dstAddr, int dstPort, String userId) {
        if (dstPort <= 0 || dstPort >= 65536) {
            throw new IllegalArgumentException("dstPort: " + dstPort + " (expected: 1~65535)");
        }
        this.type = ObjectUtil.checkNotNull(type, "type");
        this.dstAddr = IDN.toASCII(
                ObjectUtil.checkNotNull(dstAddr, "dstAddr"));
        this.userId = ObjectUtil.checkNotNull(userId, "userId");
        this.dstPort = dstPort;
    }

    @Override
    public Socks4CommandType type() {
        return type;
    }

    @Override
    public String dstAddr() {
        return dstAddr;
    }

    @Override
    public int dstPort() {
        return dstPort;
    }

    @Override
    public String userId() {
        return userId;
    }

    @Override
    public String toString() {
        StringBuilder buf = new StringBuilder(128);
        buf.append(StringUtil.simpleClassName(this));

        DecoderResult decoderResult = decoderResult();
        if (!decoderResult.isSuccess()) {
            buf.append("(decoderResult: ");
            buf.append(decoderResult);
            buf.append(", type: ");
        } else {
            buf.append("(type: ");
        }
        buf.append(type());
        buf.append(", dstAddr: ");
        buf.append(dstAddr());
        buf.append(", dstPort: ");
        buf.append(dstPort());
        buf.append(", userId: ");
        buf.append(userId());
        buf.append(')');

        return buf.toString();
    }
}