| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 2000, 2011, 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.nio.ch; |
| |
| import java.io.*; |
| import java.lang.ref.*; |
| import java.net.*; |
| import java.nio.*; |
| import java.nio.channels.*; |
| import java.security.AccessController; |
| import java.security.PrivilegedExceptionAction; |
| import java.util.*; |
| |
| import sun.misc.IoTrace; |
| |
| |
| // Make a socket channel look like a socket. |
| // |
| // The only aspects of java.net.Socket-hood that we don't attempt to emulate |
| // here are the interrupted-I/O exceptions (which our Solaris implementations |
| // attempt to support) and the sending of urgent data. Otherwise an adapted |
| // socket should look enough like a real java.net.Socket to fool most of the |
| // developers most of the time, right down to the exception message strings. |
| // |
| // The methods in this class are defined in exactly the same order as in |
| // java.net.Socket so as to simplify tracking future changes to that class. |
| // |
| |
| public class SocketAdaptor |
| extends Socket |
| { |
| |
| // The channel being adapted |
| private final SocketChannelImpl sc; |
| |
| // Timeout "option" value for reads |
| private volatile int timeout = 0; |
| |
| private SocketAdaptor(SocketChannelImpl sc) throws SocketException { |
| super(new FileDescriptorHolderSocketImpl(sc.getFD())); |
| this.sc = sc; |
| } |
| |
| public static Socket create(SocketChannelImpl sc) { |
| try { |
| return new SocketAdaptor(sc); |
| } catch (SocketException e) { |
| throw new InternalError("Should not reach here"); |
| } |
| } |
| |
| public SocketChannel getChannel() { |
| return sc; |
| } |
| |
| // Override this method just to protect against changes in the superclass |
| // |
| public void connect(SocketAddress remote) throws IOException { |
| connect(remote, 0); |
| } |
| |
| public void connect(SocketAddress remote, int timeout) throws IOException { |
| if (remote == null) |
| throw new IllegalArgumentException("connect: The address can't be null"); |
| if (timeout < 0) |
| throw new IllegalArgumentException("connect: timeout can't be negative"); |
| |
| synchronized (sc.blockingLock()) { |
| if (!sc.isBlocking()) |
| throw new IllegalBlockingModeException(); |
| |
| try { |
| |
| if (timeout == 0) { |
| // Android-changed: Be consistent |
| try { |
| sc.connect(remote); |
| } catch (Exception ex) { |
| Net.translateException(ex); |
| } |
| |
| return; |
| } |
| |
| // Implement timeout with a selector |
| SelectionKey sk = null; |
| Selector sel = null; |
| sc.configureBlocking(false); |
| try { |
| if (sc.connect(remote)) |
| return; |
| sel = Util.getTemporarySelector(sc); |
| sk = sc.register(sel, SelectionKey.OP_CONNECT); |
| long to = timeout; |
| for (;;) { |
| if (!sc.isOpen()) |
| throw new ClosedChannelException(); |
| long st = System.currentTimeMillis(); |
| int ns = sel.select(to); |
| if (ns > 0 && |
| sk.isConnectable() && sc.finishConnect()) |
| break; |
| sel.selectedKeys().remove(sk); |
| to -= System.currentTimeMillis() - st; |
| if (to <= 0) { |
| try { |
| sc.close(); |
| } catch (IOException x) { } |
| throw new SocketTimeoutException(); |
| } |
| } |
| } finally { |
| if (sk != null) |
| sk.cancel(); |
| if (sc.isOpen()) |
| sc.configureBlocking(true); |
| if (sel != null) |
| Util.releaseTemporarySelector(sel); |
| } |
| |
| } catch (Exception x) { |
| Net.translateException(x, true); |
| } |
| } |
| |
| } |
| |
| public void bind(SocketAddress local) throws IOException { |
| try { |
| sc.bind(local); |
| } catch (Exception x) { |
| Net.translateException(x); |
| } |
| } |
| |
| public InetAddress getInetAddress() { |
| // Use #remoteAddress and do manual isConnected check. #getRemoteAddress() returns |
| // non-null result before connection. |
| if (!isConnected()) { |
| return null; |
| } |
| SocketAddress remote = sc.remoteAddress(); |
| if (remote == null) { |
| return null; |
| } else { |
| return ((InetSocketAddress)remote).getAddress(); |
| } |
| } |
| |
| public InetAddress getLocalAddress() { |
| if (sc.isOpen()) { |
| InetSocketAddress local = sc.localAddress(); |
| if (local != null) |
| return Net.getRevealedLocalAddress(local).getAddress(); |
| } |
| return new InetSocketAddress(0).getAddress(); |
| } |
| |
| public int getPort() { |
| // Use #remoteAddress and do manual isConnected check. #getRemoteAddress() returns |
| // non-null result before connection. |
| if (!isConnected()) { |
| return 0; |
| } |
| SocketAddress remote = sc.remoteAddress(); |
| if (remote == null) { |
| return 0; |
| } else { |
| return ((InetSocketAddress)remote).getPort(); |
| } |
| } |
| |
| public int getLocalPort() { |
| SocketAddress local = sc.localAddress(); |
| if (local == null) { |
| return -1; |
| } else { |
| return ((InetSocketAddress)local).getPort(); |
| } |
| } |
| |
| private class SocketInputStream |
| extends ChannelInputStream |
| { |
| private SocketInputStream() { |
| super(sc); |
| } |
| |
| protected int read(ByteBuffer bb) |
| throws IOException |
| { |
| synchronized (sc.blockingLock()) { |
| if (!sc.isBlocking()) |
| throw new IllegalBlockingModeException(); |
| if (timeout == 0) |
| return sc.read(bb); |
| |
| // Implement timeout with a selector |
| SelectionKey sk = null; |
| Selector sel = null; |
| sc.configureBlocking(false); |
| int n = 0; |
| Object traceContext = IoTrace.socketReadBegin(); |
| try { |
| if ((n = sc.read(bb)) != 0) |
| return n; |
| sel = Util.getTemporarySelector(sc); |
| sk = sc.register(sel, SelectionKey.OP_READ); |
| long to = timeout; |
| for (;;) { |
| if (!sc.isOpen()) |
| throw new ClosedChannelException(); |
| long st = System.currentTimeMillis(); |
| int ns = sel.select(to); |
| if (ns > 0 && sk.isReadable()) { |
| if ((n = sc.read(bb)) != 0) |
| return n; |
| } |
| sel.selectedKeys().remove(sk); |
| to -= System.currentTimeMillis() - st; |
| if (to <= 0) |
| throw new SocketTimeoutException(); |
| } |
| } finally { |
| IoTrace.socketReadEnd(traceContext, getInetAddress(), |
| getPort(), timeout, n > 0 ? n : 0); |
| if (sk != null) |
| sk.cancel(); |
| if (sc.isOpen()) |
| sc.configureBlocking(true); |
| if (sel != null) |
| Util.releaseTemporarySelector(sel); |
| } |
| |
| } |
| } |
| } |
| |
| private InputStream socketInputStream = null; |
| |
| public InputStream getInputStream() throws IOException { |
| if (!sc.isOpen()) |
| throw new SocketException("Socket is closed"); |
| if (!sc.isConnected()) |
| throw new SocketException("Socket is not connected"); |
| if (!sc.isInputOpen()) |
| throw new SocketException("Socket input is shutdown"); |
| if (socketInputStream == null) { |
| try { |
| socketInputStream = AccessController.doPrivileged( |
| new PrivilegedExceptionAction<InputStream>() { |
| public InputStream run() throws IOException { |
| return new SocketInputStream(); |
| } |
| }); |
| } catch (java.security.PrivilegedActionException e) { |
| throw (IOException)e.getException(); |
| } |
| } |
| return socketInputStream; |
| } |
| |
| public OutputStream getOutputStream() throws IOException { |
| if (!sc.isOpen()) |
| throw new SocketException("Socket is closed"); |
| if (!sc.isConnected()) |
| throw new SocketException("Socket is not connected"); |
| if (!sc.isOutputOpen()) |
| throw new SocketException("Socket output is shutdown"); |
| OutputStream os = null; |
| try { |
| os = AccessController.doPrivileged( |
| new PrivilegedExceptionAction<OutputStream>() { |
| public OutputStream run() throws IOException { |
| return Channels.newOutputStream(sc); |
| } |
| }); |
| } catch (java.security.PrivilegedActionException e) { |
| throw (IOException)e.getException(); |
| } |
| return os; |
| } |
| |
| private void setBooleanOption(SocketOption<Boolean> name, boolean value) |
| throws SocketException |
| { |
| try { |
| sc.setOption(name, value); |
| } catch (IOException x) { |
| Net.translateToSocketException(x); |
| } |
| } |
| |
| private void setIntOption(SocketOption<Integer> name, int value) |
| throws SocketException |
| { |
| try { |
| sc.setOption(name, value); |
| } catch (IOException x) { |
| Net.translateToSocketException(x); |
| } |
| } |
| |
| private boolean getBooleanOption(SocketOption<Boolean> name) throws SocketException { |
| try { |
| return sc.getOption(name).booleanValue(); |
| } catch (IOException x) { |
| Net.translateToSocketException(x); |
| return false; // keep compiler happy |
| } |
| } |
| |
| private int getIntOption(SocketOption<Integer> name) throws SocketException { |
| try { |
| return sc.getOption(name).intValue(); |
| } catch (IOException x) { |
| Net.translateToSocketException(x); |
| return -1; // keep compiler happy |
| } |
| } |
| |
| public void setTcpNoDelay(boolean on) throws SocketException { |
| setBooleanOption(StandardSocketOptions.TCP_NODELAY, on); |
| } |
| |
| public boolean getTcpNoDelay() throws SocketException { |
| return getBooleanOption(StandardSocketOptions.TCP_NODELAY); |
| } |
| |
| public void setSoLinger(boolean on, int linger) throws SocketException { |
| if (!on) |
| linger = -1; |
| setIntOption(StandardSocketOptions.SO_LINGER, linger); |
| } |
| |
| public int getSoLinger() throws SocketException { |
| return getIntOption(StandardSocketOptions.SO_LINGER); |
| } |
| |
| public void sendUrgentData(int data) throws IOException { |
| synchronized (sc.blockingLock()) { |
| if (!sc.isBlocking()) |
| throw new IllegalBlockingModeException(); |
| int n = sc.sendOutOfBandData((byte)data); |
| assert n == 1; |
| } |
| } |
| |
| public void setOOBInline(boolean on) throws SocketException { |
| setBooleanOption(ExtendedSocketOption.SO_OOBINLINE, on); |
| } |
| |
| public boolean getOOBInline() throws SocketException { |
| return getBooleanOption(ExtendedSocketOption.SO_OOBINLINE); |
| } |
| |
| public void setSoTimeout(int timeout) throws SocketException { |
| if (timeout < 0) |
| throw new IllegalArgumentException("timeout can't be negative"); |
| this.timeout = timeout; |
| } |
| |
| public int getSoTimeout() throws SocketException { |
| return timeout; |
| } |
| |
| public void setSendBufferSize(int size) throws SocketException { |
| // size 0 valid for SocketChannel, invalid for Socket |
| if (size <= 0) |
| throw new IllegalArgumentException("Invalid send size"); |
| setIntOption(StandardSocketOptions.SO_SNDBUF, size); |
| } |
| |
| public int getSendBufferSize() throws SocketException { |
| return getIntOption(StandardSocketOptions.SO_SNDBUF); |
| } |
| |
| public void setReceiveBufferSize(int size) throws SocketException { |
| // size 0 valid for SocketChannel, invalid for Socket |
| if (size <= 0) |
| throw new IllegalArgumentException("Invalid receive size"); |
| setIntOption(StandardSocketOptions.SO_RCVBUF, size); |
| } |
| |
| public int getReceiveBufferSize() throws SocketException { |
| return getIntOption(StandardSocketOptions.SO_RCVBUF); |
| } |
| |
| public void setKeepAlive(boolean on) throws SocketException { |
| setBooleanOption(StandardSocketOptions.SO_KEEPALIVE, on); |
| } |
| |
| public boolean getKeepAlive() throws SocketException { |
| return getBooleanOption(StandardSocketOptions.SO_KEEPALIVE); |
| } |
| |
| public void setTrafficClass(int tc) throws SocketException { |
| setIntOption(StandardSocketOptions.IP_TOS, tc); |
| } |
| |
| public int getTrafficClass() throws SocketException { |
| return getIntOption(StandardSocketOptions.IP_TOS); |
| } |
| |
| public void setReuseAddress(boolean on) throws SocketException { |
| setBooleanOption(StandardSocketOptions.SO_REUSEADDR, on); |
| } |
| |
| public boolean getReuseAddress() throws SocketException { |
| return getBooleanOption(StandardSocketOptions.SO_REUSEADDR); |
| } |
| |
| public void close() throws IOException { |
| sc.close(); |
| } |
| |
| public void shutdownInput() throws IOException { |
| try { |
| sc.shutdownInput(); |
| } catch (Exception x) { |
| Net.translateException(x); |
| } |
| } |
| |
| public void shutdownOutput() throws IOException { |
| try { |
| sc.shutdownOutput(); |
| } catch (Exception x) { |
| Net.translateException(x); |
| } |
| } |
| |
| public String toString() { |
| if (sc.isConnected()) |
| return "Socket[addr=" + getInetAddress() + |
| ",port=" + getPort() + |
| ",localport=" + getLocalPort() + "]"; |
| return "Socket[unconnected]"; |
| } |
| |
| public boolean isConnected() { |
| return sc.isConnected(); |
| } |
| |
| public boolean isBound() { |
| return sc.localAddress() != null; |
| } |
| |
| public boolean isClosed() { |
| return !sc.isOpen(); |
| } |
| |
| public boolean isInputShutdown() { |
| return !sc.isInputOpen(); |
| } |
| |
| public boolean isOutputShutdown() { |
| return !sc.isOutputOpen(); |
| } |
| |
| @Override |
| public FileDescriptor getFileDescriptor$() { |
| return sc.getFD(); |
| } |
| } |