| /* |
| * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.net.httpserver; |
| |
| import java.io.*; |
| import java.net.*; |
| import com.sun.net.httpserver.*; |
| import com.sun.net.httpserver.spi.*; |
| |
| /** |
| * a class which allows the caller to write up to a defined |
| * number of bytes to an underlying stream. The caller *must* |
| * write the pre-defined number or else an exception will be thrown |
| * and the whole request aborted. |
| * normal close() does not close the underlying stream |
| */ |
| |
| class FixedLengthOutputStream extends FilterOutputStream |
| { |
| private long remaining; |
| private boolean eof = false; |
| private boolean closed = false; |
| ExchangeImpl t; |
| |
| FixedLengthOutputStream (ExchangeImpl t, OutputStream src, long len) { |
| super (src); |
| this.t = t; |
| this.remaining = len; |
| } |
| |
| public void write (int b) throws IOException { |
| if (closed) { |
| throw new IOException ("stream closed"); |
| } |
| eof = (remaining == 0); |
| if (eof) { |
| throw new StreamClosedException(); |
| } |
| out.write(b); |
| remaining --; |
| } |
| |
| public void write (byte[]b, int off, int len) throws IOException { |
| if (closed) { |
| throw new IOException ("stream closed"); |
| } |
| eof = (remaining == 0); |
| if (eof) { |
| throw new StreamClosedException(); |
| } |
| if (len > remaining) { |
| // stream is still open, caller can retry |
| throw new IOException ("too many bytes to write to stream"); |
| } |
| out.write(b, off, len); |
| remaining -= len; |
| } |
| |
| public void close () throws IOException { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| if (remaining > 0) { |
| t.close(); |
| throw new IOException ("insufficient bytes written to stream"); |
| } |
| flush(); |
| eof = true; |
| LeftOverInputStream is = t.getOriginalInputStream(); |
| if (!is.isClosed()) { |
| try { |
| is.close(); |
| } catch (IOException e) {} |
| } |
| WriteFinishedEvent e = new WriteFinishedEvent (t); |
| t.getHttpContext().getServerImpl().addEvent (e); |
| } |
| |
| // flush is a pass-through |
| } |