| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 1995, 2016, 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 java.net; |
| |
| import java.io.FileDescriptor; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.nio.channels.FileChannel; |
| |
| import dalvik.system.BlockGuard; |
| |
| /** |
| * This stream extends FileOutputStream to implement a |
| * SocketOutputStream. Note that this class should <b>NOT</b> be |
| * public. |
| * |
| * @author Jonathan Payne |
| * @author Arthur van Hoff |
| */ |
| class SocketOutputStream extends FileOutputStream |
| { |
| // Android-removed: Android doesn't need to call native init. |
| // static { |
| // init(); |
| //} |
| |
| private AbstractPlainSocketImpl impl = null; |
| private byte temp[] = new byte[1]; |
| private Socket socket = null; |
| |
| /** |
| * Creates a new SocketOutputStream. Can only be called |
| * by a Socket. This method needs to hang on to the owner Socket so |
| * that the fd will not be closed. |
| * @param impl the socket output stream inplemented |
| */ |
| SocketOutputStream(AbstractPlainSocketImpl impl) throws IOException { |
| super(impl.getFileDescriptor()); |
| this.impl = impl; |
| socket = impl.getSocket(); |
| } |
| |
| /** |
| * Returns the unique {@link java.nio.channels.FileChannel FileChannel} |
| * object associated with this file output stream. </p> |
| * |
| * The {@code getChannel} method of {@code SocketOutputStream} |
| * returns {@code null} since it is a socket based stream.</p> |
| * |
| * @return the file channel associated with this file output stream |
| * |
| * @since 1.4 |
| * @spec JSR-51 |
| */ |
| public final FileChannel getChannel() { |
| return null; |
| } |
| |
| /** |
| * Writes to the socket. |
| * @param fd the FileDescriptor |
| * @param b the data to be written |
| * @param off the start offset in the data |
| * @param len the number of bytes that are written |
| * @exception IOException If an I/O error has occurred. |
| */ |
| private native void socketWrite0(FileDescriptor fd, byte[] b, int off, |
| int len) throws IOException; |
| |
| /** |
| * Writes to the socket with appropriate locking of the |
| * FileDescriptor. |
| * @param b the data to be written |
| * @param off the start offset in the data |
| * @param len the number of bytes that are written |
| * @exception IOException If an I/O error has occurred. |
| */ |
| private void socketWrite(byte b[], int off, int len) throws IOException { |
| |
| |
| if (len <= 0 || off < 0 || len > b.length - off) { |
| if (len == 0) { |
| return; |
| } |
| throw new ArrayIndexOutOfBoundsException("len == " + len |
| + " off == " + off + " buffer length == " + b.length); |
| } |
| |
| FileDescriptor fd = impl.acquireFD(); |
| try { |
| // Android-added: Check BlockGuard policy in socketWrite. |
| BlockGuard.getThreadPolicy().onNetwork(); |
| socketWrite0(fd, b, off, len); |
| } catch (SocketException se) { |
| if (se instanceof sun.net.ConnectionResetException) { |
| impl.setConnectionResetPending(); |
| se = new SocketException("Connection reset"); |
| } |
| if (impl.isClosedOrPending()) { |
| throw new SocketException("Socket closed"); |
| } else { |
| throw se; |
| } |
| } finally { |
| impl.releaseFD(); |
| } |
| } |
| |
| /** |
| * Writes a byte to the socket. |
| * @param b the data to be written |
| * @exception IOException If an I/O error has occurred. |
| */ |
| public void write(int b) throws IOException { |
| temp[0] = (byte)b; |
| socketWrite(temp, 0, 1); |
| } |
| |
| /** |
| * Writes the contents of the buffer <i>b</i> to the socket. |
| * @param b the data to be written |
| * @exception SocketException If an I/O error has occurred. |
| */ |
| public void write(byte b[]) throws IOException { |
| socketWrite(b, 0, b.length); |
| } |
| |
| /** |
| * Writes <i>length</i> bytes from buffer <i>b</i> starting at |
| * offset <i>len</i>. |
| * @param b the data to be written |
| * @param off the start offset in the data |
| * @param len the number of bytes that are written |
| * @exception SocketException If an I/O error has occurred. |
| */ |
| public void write(byte b[], int off, int len) throws IOException { |
| socketWrite(b, off, len); |
| } |
| |
| /** |
| * Closes the stream. |
| */ |
| private boolean closing = false; |
| public void close() throws IOException { |
| // Prevent recursion. See BugId 4484411 |
| if (closing) |
| return; |
| closing = true; |
| if (socket != null) { |
| if (!socket.isClosed()) |
| socket.close(); |
| } else |
| impl.close(); |
| closing = false; |
| } |
| |
| /** |
| * Overrides finalize, the fd is closed by the Socket. |
| */ |
| protected void finalize() {} |
| |
| // Android-removed: Android doesn't need native init. |
| /* |
| * Perform class load-time initializations. |
| * |
| private native static void init(); |
| */ |
| } |