    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.net.ftp;
    019
    020import java.io.IOException;
    021import java.net.InetAddress;
    022import java.net.ServerSocket;
    023
    024import javax.net.ServerSocketFactory;
    025import javax.net.ssl.SSLContext;
    026import javax.net.ssl.SSLServerSocket;
    027
    028/**
    029 * Server socket factory for FTPS connections.
    030 * @since 2.2
    031 */
    032public class FTPSServerSocketFactory extends ServerSocketFactory {
    033
    034    /** Factory for secure socket factories */
    035    private final SSLContext context;
    036
    037    public FTPSServerSocketFactory(SSLContext context) {
    038        this.context = context;
    039    }
    040
    041    // Override the default superclass method
    042    @Override
    043    public ServerSocket createServerSocket() throws IOException {
    044        return init(this.context.getServerSocketFactory().createServerSocket());
    045    }
    046
    047    @Override
    048    public ServerSocket createServerSocket(int port) throws IOException {
    049        return init(this.context.getServerSocketFactory().createServerSocket(port));
    050    }
    051
    052    @Override
    053    public ServerSocket createServerSocket(int port, int backlog) throws IOException {
    054        return init(this.context.getServerSocketFactory().createServerSocket(port, backlog));
    055    }
    056
    057    @Override
    058    public ServerSocket createServerSocket(int port, int backlog, InetAddress ifAddress) throws IOException {
    059        return init(this.context.getServerSocketFactory().createServerSocket(port, backlog, ifAddress));
    060    }
    061
    062    /**
    063     * Sets the socket so newly accepted connections will use SSL client mode.
    064     *
    065     * @param socket the SSLServerSocket to initialise
    066     * @return the socket
    067     * @throws ClassCastException if socket is not an instance of SSLServerSocket
    068     */
    069    public ServerSocket init(ServerSocket socket) {
    070        ((SSLServerSocket) socket).setUseClientMode(true);
    071        return socket;
    072    }
    073}
    074