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      1 /*
      2  * Copyright (c) 1996, 2008, Oracle and/or its affiliates. All rights reserved.
      3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
      4  *
      5  * This code is free software; you can redistribute it and/or modify it
      6  * under the terms of the GNU General Public License version 2 only, as
      7  * published by the Free Software Foundation.  Oracle designates this
      8  * particular file as subject to the "Classpath" exception as provided
      9  * by Oracle in the LICENSE file that accompanied this code.
     10  *
     11  * This code is distributed in the hope that it will be useful, but WITHOUT
     12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  * version 2 for more details (a copy is included in the LICENSE file that
     15  * accompanied this code).
     16  *
     17  * You should have received a copy of the GNU General Public License version
     18  * 2 along with this work; if not, write to the Free Software Foundation,
     19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
     20  *
     21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
     22  * or visit www.oracle.com if you need additional information or have any
     23  * questions.
     24  */
     25 
     26 package sun.net.www.protocol.mailto;
     27 
     28 import java.net.URL;
     29 import java.net.InetAddress;
     30 import java.net.SocketPermission;
     31 import java.io.*;
     32 import java.security.Permission;
     33 import sun.net.www.*;
     34 import sun.net.smtp.SmtpClient;
     35 import sun.net.www.ParseUtil;
     36 
     37 
     38 /**
     39  * Handle mailto URLs. To send mail using a mailto URLConnection,
     40  * call <code>getOutputStream</code>, write the message to the output
     41  * stream, and close it.
     42  *
     43  */
     44 public class MailToURLConnection extends URLConnection {
     45     InputStream is = null;
     46     OutputStream os = null;
     47 
     48     SmtpClient client;
     49     Permission permission;
     50     private int connectTimeout = -1;
     51     private int readTimeout = -1;
     52 
     53     MailToURLConnection(URL u) {
     54         super(u);
     55 
     56         MessageHeader props = new MessageHeader();
     57         props.add("content-type", "text/html");
     58         setProperties(props);
     59     }
     60 
     61     /**
     62      * Get the user's full email address - stolen from
     63      * HotJavaApplet.getMailAddress().
     64      */
     65     String getFromAddress() {
     66         String str = System.getProperty("user.fromaddr");
     67         if (str == null) {
     68             str = System.getProperty("user.name");
     69             if (str != null) {
     70                 String host = System.getProperty("mail.host");
     71                 if (host == null) {
     72                     try {
     73                         host = InetAddress.getLocalHost().getHostName();
     74                     } catch (java.net.UnknownHostException e) {
     75                     }
     76                 }
     77                 str += "@" + host;
     78             } else {
     79                 str = "";
     80             }
     81         }
     82         return str;
     83     }
     84 
     85     public void connect() throws IOException {
     86         client = new SmtpClient(connectTimeout);
     87         client.setReadTimeout(readTimeout);
     88     }
     89 
     90     @Override
     91     public synchronized OutputStream getOutputStream() throws IOException {
     92         if (os != null) {
     93             return os;
     94         } else if (is != null) {
     95             throw new IOException("Cannot write output after reading input.");
     96         }
     97         connect();
     98 
     99         String to = ParseUtil.decode(url.getPath());
    100         client.from(getFromAddress());
    101         client.to(to);
    102 
    103         os = client.startMessage();
    104         return os;
    105     }
    106 
    107     @Override
    108     public Permission getPermission() throws IOException {
    109         if (permission == null) {
    110             connect();
    111             String host = client.getMailHost() + ":" + 25;
    112             permission = new SocketPermission(host, "connect");
    113         }
    114         return permission;
    115     }
    116 
    117     @Override
    118     public void setConnectTimeout(int timeout) {
    119         if (timeout < 0)
    120             throw new IllegalArgumentException("timeouts can't be negative");
    121         connectTimeout = timeout;
    122     }
    123 
    124     @Override
    125     public int getConnectTimeout() {
    126         return (connectTimeout < 0 ? 0 : connectTimeout);
    127     }
    128 
    129     @Override
    130     public void setReadTimeout(int timeout) {
    131         if (timeout < 0)
    132             throw new IllegalArgumentException("timeouts can't be negative");
    133         readTimeout = timeout;
    134     }
    135 
    136     @Override
    137     public int getReadTimeout() {
    138         return readTimeout < 0 ? 0 : readTimeout;
    139     }
    140 }
    141