/*
 * 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.net.ftp;

/**
 * I acquire a command added in FTPS.
 * @since 2.0
 */
public final class FTPSCommand {
    public static final int AUTH = 0;
    public static final int ADAT = 1;
    public static final int PBSZ = 2;
    public static final int PROT = 3;
    public static final int CCC = 4;

    public static final int AUTHENTICATION_SECURITY_MECHANISM = AUTH;
    public static final int AUTHENTICATION_SECURITY_DATA = ADAT;
    public static final int PROTECTION_BUFFER_SIZE = PBSZ;
    public static final int DATA_CHANNEL_PROTECTION_LEVEL = PROT;
    public static final int CLEAR_COMMAND_CHANNEL = CCC;

    static final String[] _commands = {"AUTH","ADAT","PBSZ","PROT","CCC"};

    /**
     * Retrieve the FTPS command string corresponding to a specified
     * command code.
     * <p>
     * @param command The command code.
     * @return The FTPS command string corresponding to a specified 
     *  command code.
     */
    public static final String getCommand(int command) {
        return _commands[command];
    }
}