KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > openlaszlo > iv > flash > url > FTPUrl


1 /*
2  * $Id: FTPUrl.java,v 1.3 2002/04/18 14:06:01 ptalbot Exp $
3  *
4  * ==========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  *
49  */
50
51 package org.openlaszlo.iv.flash.url;
52
53 import java.io.*;
54 import java.net.*;
55 import java.util.*;
56 import org.openlaszlo.iv.flash.util.*;
57 import org.openlaszlo.iv.flash.api.*;
58
59 import com.enterprisedt.net.ftp.*;
60
61 /**
62  * Implementation of ftp:// or fgftp:// url
63  *
64  * @author Patrick Talbot
65  */
66 public class FTPUrl extends IVUrl {
67
68     private FTPClient client;
69     private String JavaDoc username;
70     private String JavaDoc pwd;
71     private int port;
72
73     private URL url;
74     private long lastConnect = 0;
75
76     /**
77      * Creates FTPUrl from URLString
78      *
79      * @param urlString String specified URL String
80      * @param fgftp Boolean flag set if the urlString must be processed before creating the URL
81      * @exception IVException
82      */
83     public FTPUrl( String JavaDoc urlString, Boolean JavaDoc fgftp ) throws IVException {
84         if ( fgftp.booleanValue() )
85         {
86             // because fgftp use | as a separator between username and password :
87 urlString = urlString.replace( '|', ':' );
88             // get rid of the fg before the ftp protocol name :
89 urlString = urlString.substring(2, urlString.length());
90         }
91         try {
92             url = new URL( urlString );
93         } catch (MalformedURLException e ) {
94             throw new IVException(e.getClass().getName() + "\r\n" + e.getMessage());
95         }
96
97         this.port = url.getPort();
98         if (port < 0 )
99             port = 21;
100         username = "anonymous";
101         pwd = "";
102         String JavaDoc infos = url.getUserInfo();
103         if ( infos!=null && !infos.trim().equals("") )
104         {
105             int index = infos.indexOf(":");
106             if (index < 0 )
107                 username = infos;
108             else
109             {
110                 username = infos.substring( 0, index );
111                 pwd = infos.substring( index+1, infos.length());
112             }
113         }
114     }
115
116     public String JavaDoc getName() {
117         return url.toExternalForm();
118     }
119
120     public InputStream getInputStream() throws IOException {
121         connect();
122         Log.logRB( Resource.RETRIEVINGCONTENT, new Object JavaDoc[] { getName() } );
123         byte[] readBytes;
124         try {
125             readBytes = client.get( url.getPath() );
126             client.quit();
127         } catch (FTPException ex) {
128             throw new IOException( ex.getClass().getName() + "\n" + ex.getMessage() );
129         }
130         return (InputStream) new ByteArrayInputStream( readBytes );
131     }
132
133     private synchronized void connect() throws IOException {
134         long now = System.currentTimeMillis();
135         if( lastConnect == 0 || lastConnect+500 < now ) {
136
137             Log.logRB( Resource.CONNECTINGTO, new Object JavaDoc[] { getName() } );
138             try {
139
140                 client = new FTPClient( url.getHost(), port );
141                 client.login( username, pwd );
142                 client.setType( FTPTransferType.BINARY );
143
144             } catch (FTPException ex) {
145                 throw new IOException( ex.getClass().getName() + "\n" + ex.getMessage() );
146             }
147             lastConnect = System.currentTimeMillis();
148         }
149     }
150
151 }
152
Popular Tags