/* | |
* Copyright 2008 the original author or authors. | |
* | |
* Licensed 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.mockftpserver.fake.command; | |
import org.mockftpserver.core.command.Command; | |
import org.mockftpserver.core.command.ReplyCodes; | |
import org.mockftpserver.core.session.Session; | |
import org.mockftpserver.core.util.StringUtil; | |
import java.util.List; | |
/** | |
* CommandHandler for the NLST command. Handler logic: | |
* <ol> | |
* <li>If the user has not logged in, then reply with 530 and terminate</li> | |
* <li>Send an initial reply of 150</li> | |
* <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> | |
* <li>If an error occurs during processing, then send a reply of 451 and terminate</li> | |
* <li>If the optional pathname parameter is missing, then send a directory listing for | |
* the current directory across the data connection</li> | |
* <li>Otherwise, if the optional pathname parameter specifies a directory or group of files, | |
* then send a directory listing for the specified directory across the data connection</li> | |
* <li>Otherwise, if the pathname parameter does not specify an existing directory or group of files, | |
* then send an empty response across the data connection</li> | |
* <li>Send a final reply with 226</li> | |
* </ol> | |
* The directory listing sent includes filenames only, separated by end-of-line characters. | |
* | |
* @author Chris Mair | |
* @version $Revision$ - $Date$ | |
*/ | |
public class NlstCommandHandler extends AbstractFakeCommandHandler { | |
protected void handle(Command command, Session session) { | |
verifyLoggedIn(session); | |
sendReply(session, ReplyCodes.TRANSFER_DATA_INITIAL_OK); | |
String path = getRealPath(session, command.getParameter(0)); | |
// User must have read permission to the path | |
if (getFileSystem().exists(path)) { | |
this.replyCodeForFileSystemException = ReplyCodes.READ_FILE_ERROR; | |
verifyReadPermission(session, path); | |
} | |
this.replyCodeForFileSystemException = ReplyCodes.SYSTEM_ERROR; | |
List names = getFileSystem().listNames(path); | |
String directoryListing = StringUtil.join(names, endOfLine()); | |
directoryListing += directoryListing.length() > 0 ? endOfLine() : ""; | |
session.openDataConnection(); | |
session.sendData(directoryListing.getBytes(), directoryListing.length()); | |
session.closeDataConnection(); | |
sendReply(session, ReplyCodes.TRANSFER_DATA_FINAL_OK); | |
} | |
} |