ListCommandHandler.java revision 3b7668ee59bf567db6bce593a9090f65db171fdb
1/* 2 * Copyright 2007 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package org.mockftpserver.stub.command; 17 18import org.mockftpserver.core.command.Command; 19import org.mockftpserver.core.command.CommandHandler; 20import org.mockftpserver.core.command.InvocationRecord; 21import org.mockftpserver.core.session.Session; 22 23/** 24 * CommandHandler for the LIST command. Return the configured directory listing on the data 25 * connection, along with two replies on the control connection: a reply code of 150 and 26 * another of 226. By default, return an empty directory listing. You can customize the 27 * returned directory listing by setting the <code>directoryListing</code> property. 28 * <p> 29 * The interpretation of the value returned from this command is dependent upon the value returned 30 * by the SYST command. The format of the directory listing should match the format associated with 31 * the system named by the SYST command. For example, if the SYST command returns "WINDOWS", then 32 * the directory listing value from this command should match the Windows-specific format. 33 * <p> 34 * Each invocation record stored by this CommandHandler includes the following data element key/values: 35 * <ul> 36 * <li>{@link #PATHNAME_KEY} ("pathname") - the pathname of the directory (or file) submitted on the 37 * invocation (the first command parameter); this parameter is optional, so the value may be null. 38 * </ul> 39 * 40 * @author Chris Mair 41 * @version $Revision$ - $Date$ 42 * @see SystCommandHandler 43 */ 44public class ListCommandHandler extends AbstractStubDataCommandHandler implements CommandHandler { 45 46 public static final String PATHNAME_KEY = "pathname"; 47 48 private String directoryListing = ""; 49 50 /** 51 * @see org.mockftpserver.stub.command.AbstractStubDataCommandHandler#beforeProcessData(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session, org.mockftpserver.core.command.InvocationRecord) 52 */ 53 protected void beforeProcessData(Command command, Session session, InvocationRecord invocationRecord) throws Exception { 54 invocationRecord.set(PATHNAME_KEY, command.getOptionalString(0)); 55 } 56 57 /** 58 * @see org.mockftpserver.stub.command.AbstractStubDataCommandHandler#processData(org.mockftpserver.core.command.Command, org.mockftpserver.core.session.Session, org.mockftpserver.core.command.InvocationRecord) 59 */ 60 protected void processData(Command command, Session session, InvocationRecord invocationRecord) { 61 session.sendData(directoryListing.getBytes(), directoryListing.length()); 62 } 63 64 /** 65 * Set the contents of the directoryListing to send back on the data connection for this command. 66 * The passed-in value is trimmed automatically. 67 * 68 * @param directoryListing - the directoryListing to set 69 */ 70 public void setDirectoryListing(String directoryListing) { 71 this.directoryListing = directoryListing.trim(); 72 } 73 74} 75