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.PortParser; 22 23import java.net.InetAddress; 24 25/** 26 * CommandHandler for the PASV command. Handler logic: 27 * <ol> 28 * <li>If the user has not logged in, then reply with 530</li> 29 * <li>Otherwise, request the Session to switch to passive data connection mode. Return a reply code of 227, 30 * along with response text of the form: "<i>(h1,h2,h3,h4,p1,p2)</i>", where <i>h1..h4</i> are the 31 * 4 bytes of the 32-bit internet host address of the server, and <i>p1..p2</i> are the 2 32 * bytes of the 16-bit TCP port address of the data connection on the server to which 33 * the client must connect. See RFC959 for more information.</i> 34 * </ol> 35 * 36 * @author Chris Mair 37 * @version $Revision$ - $Date$ 38 */ 39public class PasvCommandHandler extends AbstractFakeCommandHandler { 40 41 protected void handle(Command command, Session session) { 42 verifyLoggedIn(session); 43 44 int port = session.switchToPassiveMode(); 45 InetAddress server = session.getServerHost(); 46 LOG.debug("server=" + server + " port=" + port); 47 String hostAndPort = PortParser.convertHostAndPortToCommaDelimitedBytes(server, port); 48 49 sendReply(session, ReplyCodes.PASV_OK, "pasv", list(hostAndPort)); 50 } 51 52} 53