| /* |
| * 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.ftpserver.command.impl; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.StringTokenizer; |
| |
| import org.apache.ftpserver.command.AbstractCommand; |
| import org.apache.ftpserver.ftplet.FtpException; |
| import org.apache.ftpserver.ftplet.FtpReply; |
| import org.apache.ftpserver.ftplet.FtpRequest; |
| import org.apache.ftpserver.impl.FtpIoSession; |
| import org.apache.ftpserver.impl.FtpServerContext; |
| import org.apache.ftpserver.impl.LocalizedFtpReply; |
| |
| /** |
| * <strong>Internal class, do not use directly.</strong> |
| * |
| * Client-Server listing negotation. Instruct the server what listing types to |
| * include in machine directory/file listings. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class OPTS_MLST extends AbstractCommand { |
| |
| private final static String[] AVAILABLE_TYPES = { "Size", "Modify", "Type", |
| "Perm" }; |
| |
| /** |
| * Execute command. |
| */ |
| public void execute(final FtpIoSession session, |
| final FtpServerContext context, final FtpRequest request) |
| throws IOException, FtpException { |
| |
| // reset state |
| session.resetState(); |
| |
| // get the listing types |
| String argument = request.getArgument(); |
| |
| String listTypes; |
| String types[]; |
| int spIndex = argument.indexOf(' '); |
| if (spIndex == -1) { |
| types = new String[0]; |
| listTypes = ""; |
| } else { |
| listTypes = argument.substring(spIndex + 1); |
| |
| // parse all the type tokens |
| StringTokenizer st = new StringTokenizer(listTypes, ";"); |
| types = new String[st.countTokens()]; |
| for (int i = 0; i < types.length; ++i) { |
| types[i] = st.nextToken(); |
| } |
| } |
| // set the list types |
| String[] validatedTypes = validateSelectedTypes(types); |
| if (validatedTypes != null) { |
| session.setAttribute("MLST.types", validatedTypes); |
| session.write(LocalizedFtpReply.translate(session, request, context, |
| FtpReply.REPLY_200_COMMAND_OKAY, "OPTS.MLST", listTypes)); |
| } else { |
| session.write(LocalizedFtpReply.translate(session, request, context, |
| FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS, |
| "OPTS.MLST", listTypes)); |
| } |
| } |
| |
| private String[] validateSelectedTypes(final String types[]) { |
| |
| // ignore null types |
| if (types == null) { |
| return new String[0]; |
| } |
| |
| List<String> selectedTypes = new ArrayList<>(); |
| // check all the types |
| for (int i = 0; i < types.length; ++i) { |
| for (int j = 0; j < AVAILABLE_TYPES.length; ++j) { |
| if (AVAILABLE_TYPES[j].equalsIgnoreCase(types[i])) { |
| selectedTypes.add(AVAILABLE_TYPES[j]); |
| break; |
| } |
| } |
| } |
| |
| return selectedTypes.toArray(new String[0]); |
| } |
| } |