| /* |
| * 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.net.InetAddress; |
| import java.net.SocketException; |
| |
| import org.apache.ftpserver.command.AbstractCommand; |
| import org.apache.ftpserver.command.impl.listing.DirectoryLister; |
| import org.apache.ftpserver.command.impl.listing.LISTFileFormater; |
| import org.apache.ftpserver.command.impl.listing.ListArgument; |
| import org.apache.ftpserver.command.impl.listing.ListArgumentParser; |
| import org.apache.ftpserver.ftplet.DataConnection; |
| import org.apache.ftpserver.ftplet.DataConnectionFactory; |
| import org.apache.ftpserver.ftplet.DefaultFtpReply; |
| import org.apache.ftpserver.ftplet.FtpException; |
| import org.apache.ftpserver.ftplet.FtpFile; |
| 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.IODataConnectionFactory; |
| import org.apache.ftpserver.impl.LocalizedDataTransferFtpReply; |
| import org.apache.ftpserver.impl.LocalizedFtpReply; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * <strong>Internal class, do not use directly.</strong> |
| * |
| * <code>LIST [<SP> <pathname>] <CRLF></code><br> |
| * |
| * This command causes a list to be sent from the server to the passive DTP. If |
| * the pathname specifies a directory or other group of files, the server should |
| * transfer a list of files in the specified directory. If the pathname |
| * specifies a file then the server should send current information on the file. |
| * A null argument implies the user's current working or default directory. The |
| * data transfer is over the data connection. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class LIST extends AbstractCommand { |
| |
| private final Logger LOG = LoggerFactory.getLogger(LIST.class); |
| |
| private static final LISTFileFormater LIST_FILE_FORMATER = new LISTFileFormater(); |
| |
| private final DirectoryLister directoryLister = new DirectoryLister(); |
| |
| /** |
| * Execute command. |
| */ |
| public void execute(final FtpIoSession session, |
| final FtpServerContext context, final FtpRequest request) |
| throws IOException, FtpException { |
| |
| try { |
| |
| // reset state variables |
| session.resetState(); |
| |
| // parse argument |
| ListArgument parsedArg = ListArgumentParser.parse(request |
| .getArgument()); |
| |
| // checl that the directory or file exists |
| FtpFile file = session.getFileSystemView().getFile(parsedArg.getFile()); |
| |
| if(!file.doesExist()) { |
| LOG.debug("Listing on a non-existing file"); |
| session.write(LocalizedDataTransferFtpReply.translate(session, request, context, |
| FtpReply.REPLY_450_REQUESTED_FILE_ACTION_NOT_TAKEN, "LIST", |
| null, file)); |
| return; |
| } |
| |
| // 24-10-2007 - added check if PORT or PASV is issued, see |
| // https://issues.apache.org/jira/browse/FTPSERVER-110 |
| DataConnectionFactory connFactory = session.getDataConnection(); |
| if (connFactory instanceof IODataConnectionFactory) { |
| InetAddress address = ((IODataConnectionFactory) connFactory) |
| .getInetAddress(); |
| if (address == null) { |
| session.write(new DefaultFtpReply( |
| FtpReply.REPLY_503_BAD_SEQUENCE_OF_COMMANDS, |
| "PORT or PASV must be issued first")); |
| return; |
| } |
| } |
| |
| // get data connection |
| session.write(LocalizedFtpReply.translate(session, request, context, |
| FtpReply.REPLY_150_FILE_STATUS_OKAY, "LIST", null)); |
| |
| DataConnection dataConnection; |
| try { |
| dataConnection = session.getDataConnection().openConnection(); |
| } catch (Exception e) { |
| LOG.debug("Exception getting the output data stream", e); |
| session.write(LocalizedDataTransferFtpReply.translate(session, request, context, |
| FtpReply.REPLY_425_CANT_OPEN_DATA_CONNECTION, "LIST", |
| null, file)); |
| return; |
| } |
| |
| // transfer listing data |
| boolean failure = false; |
| String dirList = directoryLister.listFiles(parsedArg, |
| session.getFileSystemView(), LIST_FILE_FORMATER); |
| try { |
| dataConnection.transferToClient(session.getFtpletSession(), dirList); |
| } catch (SocketException ex) { |
| LOG.debug("Socket exception during list transfer", ex); |
| failure = true; |
| session.write(LocalizedDataTransferFtpReply.translate(session, request, context, |
| FtpReply.REPLY_426_CONNECTION_CLOSED_TRANSFER_ABORTED, |
| "LIST", null, file)); |
| } catch (IOException ex) { |
| LOG.debug("IOException during list transfer", ex); |
| failure = true; |
| session |
| .write(LocalizedDataTransferFtpReply |
| .translate( |
| session, |
| request, |
| context, |
| FtpReply.REPLY_551_REQUESTED_ACTION_ABORTED_PAGE_TYPE_UNKNOWN, |
| "LIST", null, file)); |
| } catch (IllegalArgumentException e) { |
| LOG.debug("Illegal list syntax: " + request.getArgument(), e); |
| // if listing syntax error - send message |
| session |
| .write(LocalizedDataTransferFtpReply |
| .translate( |
| session, |
| request, |
| context, |
| FtpReply.REPLY_501_SYNTAX_ERROR_IN_PARAMETERS_OR_ARGUMENTS, |
| "LIST", null, file)); |
| } |
| |
| // if data transfer ok - send transfer complete message |
| if (!failure) { |
| session.write(LocalizedDataTransferFtpReply.translate(session, request, context, |
| FtpReply.REPLY_226_CLOSING_DATA_CONNECTION, "LIST", |
| null, file, dirList.length())); |
| } |
| } finally { |
| session.getDataConnection().closeDataConnection(); |
| } |
| } |
| |
| } |