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Java Source | 1995-05-15 | 2.5 KB | 92 lines |
- /*
- * @(#)IftpClient.java 1.9 95/05/10 Jonathan Payne
- *
- * Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Permission to use, copy, modify, and distribute this software
- * and its documentation for NON-COMMERCIAL purposes and without
- * fee is hereby granted provided that this copyright notice
- * appears in all copies. Please refer to the file "copyright.html"
- * for further important copyright and licensing information.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
- * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
- * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
- */
-
- package net.ftp;
-
- import java.io.*;
- import net.*;
-
- /**
- * Create an FTP client that uses a proxy server to cross a network
- * firewall boundary.
- *
- * @version 1.9, 10 May 1995
- * @author Jonathan Payne
- * @see FtpClient
- */
- public class IftpClient extends FtpClient {
- /** The proxyserver to use */
- String proxyServer = "sun-barr";
- String actualHost = null;
-
- /**
- * Open an FTP connection to host <i>host</i>.
- */
- public void openServer(String host) {
- if (!serverIsOpen())
- super.openServer(proxyServer,
- InetAddress.getPortByName("ftp-passthru"));
- actualHost = host;
- }
-
- boolean checkExpectedReply() {
- return readReply() != FTP_ERROR;
- }
-
- /**
- * login user to a host with username <i>user</i> and password
- * <i>password</i>
- */
- public void login(String user, String password) {
- if (!serverIsOpen()) {
- throw new FtpLoginException("not connected to host");
- }
- user = user + "@" + actualHost;
- this.user = user;
- this.password = password;
- if (issueCommand("USER " + user) == FTP_ERROR ||
- lastReplyCode == 220 && !checkExpectedReply()) {
- throw new FtpLoginException("user");
- }
- if (password != null && issueCommand("PASS " + password) == FTP_ERROR) {
- throw new FtpLoginException("password");
- }
- }
-
- /**
- * change the proxyserver from the default.
- */
- public void setProxyServer(String proxy) {
- if (serverIsOpen())
- closeServer();
- proxyServer = proxy;
- }
-
- /**
- * Create a new IftpClient handle.
- */
- public IftpClient(String host) {
- super();
- openServer(host);
- }
-
- /** Create an uninitialized client handle */
- public IftpClient() {}
- }
-