1/* 2 * Copyright 2008 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.fake.command; 17 18import org.mockftpserver.core.command.Command; 19import org.mockftpserver.core.command.ReplyCodes; 20import org.mockftpserver.core.session.Session; 21import org.mockftpserver.core.util.StringUtil; 22import org.mockftpserver.fake.filesystem.FileSystemEntry; 23 24import java.util.ArrayList; 25import java.util.Iterator; 26import java.util.List; 27 28/** 29 * CommandHandler for the LIST command. Handler logic: 30 * <ol> 31 * <li>If the user has not logged in, then reply with 530 and terminate</li> 32 * <li>Send an initial reply of 150</li> 33 * <li>If the current user does not have read access to the file or directory to be listed, then reply with 550 and terminate</li> 34 * <li>If an error occurs during processing, then send a reply of 451 and terminate</li> 35 * <li>If the optional pathname parameter is missing, then send a directory listing for 36 * the current directory across the data connection</li> 37 * <li>Otherwise, if the optional pathname parameter specifies a directory or group of files, 38 * then send a directory listing for the specified directory across the data connection</li> 39 * <li>Otherwise, if the optional pathname parameter specifies a filename, then send information 40 * for the specified file across the data connection</li> 41 * <li>Send a final reply with 226</li> 42 * </ol> 43 * 44 * @author Chris Mair 45 * @version $Revision$ - $Date$ 46 */ 47public class ListCommandHandler extends AbstractFakeCommandHandler { 48 49 protected void handle(Command command, Session session) { 50 verifyLoggedIn(session); 51 sendReply(session, ReplyCodes.TRANSFER_DATA_INITIAL_OK); 52 53 String path = getRealPath(session, command.getParameter(0)); 54 55 // User must have read permission to the path 56 if (getFileSystem().exists(path)) { 57 this.replyCodeForFileSystemException = ReplyCodes.READ_FILE_ERROR; 58 verifyReadPermission(session, path); 59 } 60 61 this.replyCodeForFileSystemException = ReplyCodes.SYSTEM_ERROR; 62 List fileEntries = getFileSystem().listFiles(path); 63 Iterator iter = fileEntries.iterator(); 64 List lines = new ArrayList(); 65 while (iter.hasNext()) { 66 FileSystemEntry entry = (FileSystemEntry) iter.next(); 67 lines.add(getFileSystem().formatDirectoryListing(entry)); 68 } 69 String result = StringUtil.join(lines, endOfLine()); 70 result += result.length() > 0 ? endOfLine() : ""; 71 72 session.openDataConnection(); 73 LOG.info("Sending [" + result + "]"); 74 session.sendData(result.getBytes(), result.length()); 75 session.closeDataConnection(); 76 77 sendReply(session, ReplyCodes.TRANSFER_DATA_FINAL_OK); 78 } 79 80}