1 /*
   2  * Copyright (c) 1996, 2012, 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.security.ssl;
  27 
  28 import java.io.OutputStream;
  29 import java.io.IOException;
  30 import java.nio.ByteBuffer;
  31 
  32 /*
  33  * OutputStream for application data as returned by SSLSocket.getOutputStream().
  34  *
  35  * @author  David Brownell
  36  */
  37 class AppOutputStream extends OutputStream {
  38 
  39     private SSLSocketImpl socket;
  40 
  41     // One element array used to implement the write(byte) method
  42     private final byte[] oneByte = new byte[1];
  43 
  44     AppOutputStream(SSLSocketImpl conn) {
  45         this.socket = conn;
  46     }
  47 
  48     /**
  49      * Write the data out, NOW.
  50      */
  51     @Override
  52     public synchronized void write(byte[] b, int off, int len)
  53             throws IOException {
  54         if (b == null) {
  55             throw new NullPointerException();
  56         } else if (off < 0 || len < 0 || len > b.length - off) {
  57             throw new IndexOutOfBoundsException();
  58         } else if (len == 0) {
  59             return;
  60         }
  61 
  62         // check if the Socket is invalid (error or closed)
  63         socket.checkWrite();
  64 
  65         // Delegate the writing to the underlying socket.
  66         try {
  67             socket.writeRecord(b, off, len);
  68             socket.checkWrite();
  69         } catch (Exception e) {
  70             // shutdown and rethrow (wrapped) exception as appropriate
  71             socket.handleException(e);
  72         }
  73     }
  74 
  75     /**
  76      * Write one byte now.
  77      */
  78     @Override
  79     public synchronized void write(int i) throws IOException {
  80         oneByte[0] = (byte)i;
  81         write(oneByte, 0, 1);
  82     }
  83 
  84     /*
  85      * Socket close is already synchronized, no need to block here.
  86      */
  87     @Override
  88     public void close() throws IOException {
  89         socket.close();
  90     }
  91 
  92     // inherit no-op flush()
  93 }