SocksCmdRequest.java — netty Source File

Source Code

/*
 * 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.socks;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.util.CharsetUtil;
import io.netty.util.NetUtil;
import io.netty.util.internal.ObjectUtil;

import java.net.IDN;

/**
 * An socks cmd request.
 *
 * @see SocksCmdResponse
 * @see SocksCmdRequestDecoder
 */
public final class SocksCmdRequest extends SocksRequest {
    private final SocksCmdType cmdType;
    private final SocksAddressType addressType;
    private final String host;
    private final int port;

    public SocksCmdRequest(SocksCmdType cmdType, SocksAddressType addressType, String host, int port) {
        super(SocksRequestType.CMD);
        ObjectUtil.checkNotNull(cmdType, "cmdType");
        ObjectUtil.checkNotNull(addressType, "addressType");
        ObjectUtil.checkNotNull(host, "host");

        switch (addressType) {
            case IPv4:
                if (!NetUtil.isValidIpV4Address(host)) {
                    throw new IllegalArgumentException(host + " is not a valid IPv4 address");
                }
                break;
            case DOMAIN:
                String asciiHost = IDN.toASCII(host);
                if (asciiHost.length() > 255) {
                    throw new IllegalArgumentException(host + " IDN: " + asciiHost + " exceeds 255 char limit");
                }
                host = asciiHost;
                break;
            case IPv6:
                if (!NetUtil.isValidIpV6Address(host)) {
                    throw new IllegalArgumentException(host + " is not a valid IPv6 address");
                }
// ... (78 more lines)