001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.net.ftp;
019    
020    /**
021     * FTPS-specific command
022     * @since 2.0
023     */
024    public final class FTPSCommand {
025        public static final int AUTH = 0;
026        public static final int ADAT = 1;
027        public static final int PBSZ = 2;
028        public static final int PROT = 3;
029        public static final int CCC = 4;
030    
031        public static final int AUTHENTICATION_SECURITY_MECHANISM = AUTH;
032        public static final int AUTHENTICATION_SECURITY_DATA = ADAT;
033        public static final int PROTECTION_BUFFER_SIZE = PBSZ;
034        public static final int DATA_CHANNEL_PROTECTION_LEVEL = PROT;
035        public static final int CLEAR_COMMAND_CHANNEL = CCC;
036    
037        static final String[] _commands = {"AUTH","ADAT","PBSZ","PROT","CCC"};
038    
039        /**
040         * Retrieve the FTPS command string corresponding to a specified
041         * command code.
042         * <p>
043         * @param command The command code.
044         * @return The FTPS command string corresponding to a specified 
045         *  command code.
046         */
047        public static final String getCommand(int command) {
048            return _commands[command];
049        }
050    }