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1 files changed, 478 insertions, 0 deletions

diff --git a/libjava/gnu/java/net/PlainSocketImpl.java b/libjava/gnu/java/net/PlainSocketImpl.java
new file mode 100644
index 000000000..d2c8f02b6
--- /dev/null
+++ b/libjava/gnu/java/net/PlainSocketImpl.java
@@ -0,0 +1,478 @@
+/* PlainSocketImpl.java -- Default socket implementation
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
+   Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+ 
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.net;
+
+import gnu.classpath.Configuration;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.net.SocketException;
+import java.net.SocketImpl;
+import java.net.SocketOptions;
+
+/**
+ * Written using on-line Java Platform 1.2 API Specification, as well
+ * as "The Java Class Libraries", 2nd edition (Addison-Wesley, 1998).
+ * Status:  Believed complete and correct.
+ */
+
+/**
+ * Unless the application installs its own SocketImplFactory, this is the
+ * default socket implemetation that will be used.  It simply uses a
+ * combination of Java and native routines to implement standard BSD
+ * style sockets of family AF_INET and types SOCK_STREAM and SOCK_DGRAM
+ *
+ * @author Per Bothner (bothner@cygnus.com)
+ * @author Nic Ferrier (nferrier@tapsellferrier.co.uk)
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public final class PlainSocketImpl extends SocketImpl
+{
+  // Static initializer to load native library.
+  static
+    {
+      if (Configuration.INIT_LOAD_LIBRARY)
+        {
+          System.loadLibrary("javanet");
+        }
+    }
+  
+  // These fields are mirrored for use in native code to avoid cpp conflicts
+  // when the #defines in system header files are the same as the public fields.
+  static final int _Jv_TCP_NODELAY_ = SocketOptions.TCP_NODELAY,
+                   _Jv_SO_BINDADDR_ = SocketOptions.SO_BINDADDR,
+                   _Jv_SO_REUSEADDR_ = SocketOptions.SO_REUSEADDR,
+                   _Jv_SO_BROADCAST_ = SocketOptions.SO_BROADCAST,
+                   _Jv_SO_OOBINLINE_ = SocketOptions.SO_OOBINLINE,
+                   _Jv_IP_MULTICAST_IF_ = SocketOptions.IP_MULTICAST_IF,
+                   _Jv_IP_MULTICAST_IF2_ = SocketOptions.IP_MULTICAST_IF2,
+                   _Jv_IP_MULTICAST_LOOP_ = SocketOptions.IP_MULTICAST_LOOP,
+                   _Jv_IP_TOS_ = SocketOptions.IP_TOS,
+                   _Jv_SO_LINGER_ = SocketOptions.SO_LINGER,
+                   _Jv_SO_TIMEOUT_ = SocketOptions.SO_TIMEOUT,
+                   _Jv_SO_SNDBUF_ = SocketOptions.SO_SNDBUF,
+                   _Jv_SO_RCVBUF_ = SocketOptions.SO_RCVBUF,
+                   _Jv_SO_KEEPALIVE_ = SocketOptions.SO_KEEPALIVE;
+
+  /**
+   * The OS file handle representing the socket.
+   * This is used for reads and writes to/from the socket and
+   * to close it.
+   *
+   * When the socket is closed this is reset to -1.
+   */
+  int native_fd = -1;
+
+  // This value is set/read by setOption/getOption.
+  int timeout = 0;
+  
+  // localAddress cache
+  InetAddress localAddress;
+
+  // Local address as an InetSocketAddress.
+  InetSocketAddress localSocketAddress;
+
+  /**
+   * A cached copy of the in stream for reading from the socket.
+   */
+  private InputStream in;
+
+  /**
+   * A cached copy of the out stream for writing to the socket.
+   */
+  private OutputStream out;
+
+  /**
+   * Indicates whether a channel initiated whatever operation
+   * is being invoked on this socket.
+   */
+  private boolean inChannelOperation;
+
+  /**
+   * Indicates whether we should ignore whether any associated
+   * channel is set to non-blocking mode. Certain operations
+   * throw an <code>IllegalBlockingModeException</code> if the
+   * associated channel is in non-blocking mode, <i>except</i>
+   * if the operation is invoked by the channel itself.
+   */
+  public final boolean isInChannelOperation()
+  {
+    return inChannelOperation;
+  }
+  
+  /**
+   * Sets our indicator of whether an I/O operation is being
+   * initiated by a channel.
+   */
+  public final void setInChannelOperation(boolean b)
+  {
+    inChannelOperation = b;
+  }
+ 
+  /**
+   * Default do nothing constructor
+   */
+  public PlainSocketImpl()
+  {
+  }
+  
+  protected void finalize() throws Throwable
+  {
+    synchronized (this)
+      {
+	if (native_fd != -1)
+	  try
+	    {
+	      close();
+	    }
+	  catch (IOException ex)
+	    {
+	    }
+      }
+    super.finalize();
+  }
+
+  public int getNativeFD()
+  {
+    return native_fd;
+  }
+
+  /**
+   * Sets the specified option on a socket to the passed in object.  For
+   * options that take an integer argument, the passed in object is an
+   * Integer.  The option_id parameter is one of the defined constants in
+   * this interface.
+   *
+   * @param option_id The identifier of the option
+   * @param val The value to set the option to
+   *
+   * @exception SocketException If an error occurs
+   */
+  public native void setOption(int optID, Object value) throws SocketException;
+
+  /**
+   * Returns the current setting of the specified option.  The Object returned
+   * will be an Integer for options that have integer values.  The option_id
+   * is one of the defined constants in this interface.
+   *
+   * @param option_id The option identifier
+   *
+   * @return The current value of the option
+   *
+   * @exception SocketException If an error occurs
+   */
+  public native Object getOption(int optID) throws SocketException;
+
+  /**
+   * Flushes the input stream and closes it. If you read from the input stream
+   * after calling this method a <code>IOException</code> will be thrown.
+   * 
+   * @throws IOException if an error occurs
+   */
+  public native void shutdownInput() throws IOException;
+
+  /**
+   * Flushes the output stream and closes it. If you write to the output stream
+   * after calling this method a <code>IOException</code> will be thrown.
+   * 
+   * @throws IOException if an error occurs
+   */
+  public native void shutdownOutput() throws IOException;
+
+  /**
+   * Creates a new socket that is not bound to any local address/port and
+   * is not connected to any remote address/port.  This will be created as
+   * a stream socket if the stream parameter is true, or a datagram socket
+   * if the stream parameter is false.
+   *
+   * @param stream true for a stream socket, false for a datagram socket
+   */
+  // FIXME: this is public for nio ... but this is just a hack
+  // until we upgrade to Classpath's nio.
+  public native void create(boolean stream) throws IOException;
+
+  /**
+   * Connects to the remote hostname and port specified as arguments.
+   *
+   * @param hostname The remote hostname to connect to
+   * @param port The remote port to connect to
+   *
+   * @exception IOException If an error occurs
+   */
+  protected void connect(String host, int port) throws IOException
+  {
+    connect(InetAddress.getByName(host), port);
+  }
+
+  /**
+   * Connects to the remote address and port specified as arguments.
+   *
+   * @param addr The remote address to connect to
+   * @param port The remote port to connect to
+   *
+   * @exception IOException If an error occurs
+   */
+  protected void connect(InetAddress host, int port) throws IOException
+  {
+    connect (new InetSocketAddress (host, port), 0);
+  }
+
+  /**
+   * Connects to the remote socket address with a specified timeout.
+   *
+   * @param timeout The timeout to use for this connect, 0 means infinite.
+   *
+   * @exception IOException If an error occurs
+   */
+  protected native void connect(SocketAddress addr, int timeout) throws IOException;
+
+  /**
+   * Binds to the specified port on the specified addr.  Note that this addr
+   * must represent a local IP address.  **** How bind to INADDR_ANY? ****
+   *
+   * @param addr The address to bind to
+   * @param port The port number to bind to
+   *
+   * @exception IOException If an error occurs
+   */
+  protected native void bind(InetAddress host, int port)
+    throws IOException;
+
+  /**
+   * Starts listening for connections on a socket. The queuelen parameter
+   * is how many pending connections will queue up waiting to be serviced
+   * before being accept'ed.  If the queue of pending requests exceeds this
+   * number, additional connections will be refused.
+   *
+   * @param queuelen The length of the pending connection queue
+   * 
+   * @exception IOException If an error occurs
+   */
+  protected native void listen(int queuelen)
+    throws IOException;
+
+  /**
+   * Accepts a new connection on this socket and returns in in the 
+   * passed in SocketImpl.
+   *
+   * @param impl The SocketImpl object to accept this connection.
+   */
+  protected void accept(SocketImpl impl)
+    throws IOException
+  {
+    accept((PlainSocketImpl) impl);
+  }
+
+  private native void accept(PlainSocketImpl impl)
+    throws IOException;
+
+  /**
+   * Returns the number of bytes that the caller can read from this socket
+   * without blocking. 
+   *
+   * @return The number of readable bytes before blocking
+   *
+   * @exception IOException If an error occurs
+   */
+  protected native int available() throws IOException;
+
+  /**
+   * Closes the socket.  This will cause any InputStream or OutputStream
+   * objects for this Socket to be closed as well.
+   * <p>
+   * Note that if the SO_LINGER option is set on this socket, then the
+   * operation could block.
+   *
+   * @exception IOException If an error occurs
+   */
+  protected native void close() throws IOException;
+
+  protected native void sendUrgentData(int data) throws IOException;
+
+  public synchronized InetSocketAddress getLocalAddress()
+  {
+    if (localSocketAddress == null)
+      {
+	try
+	  {
+	    localSocketAddress
+	      = new InetSocketAddress ((InetAddress) getOption(SocketOptions.SO_BINDADDR),
+				       localport == -1 ? 0 : localport);
+	  }
+	catch (SocketException _)
+	  {
+	    return null;
+	  }
+      }
+    return localSocketAddress;
+  }
+
+  /**
+   * Returns an InputStream object for reading from this socket.  This will
+   * be an instance of SocketInputStream.
+   *
+   * @return An input stream attached to the socket.
+   *
+   * @exception IOException If an error occurs
+   */
+  protected synchronized InputStream getInputStream() throws IOException
+  {
+    if (in == null)
+      in = new SocketInputStream();
+    
+    return in;
+  }
+
+  /**
+   * Returns an OutputStream object for writing to this socket.  This will
+   * be an instance of SocketOutputStream.
+   *
+   * @return An output stream attached to the socket.
+   *
+   * @exception IOException If an error occurs
+   */
+  protected synchronized OutputStream getOutputStream() throws IOException
+  {
+    if (out == null)
+      out = new SocketOutputStream();
+    
+    return out;
+  }
+
+  /**
+   * This class contains an implementation of <code>InputStream</code> for 
+   * sockets.  It in an internal only class used by <code>PlainSocketImpl</code>.
+   *
+   * @author Nic Ferrier <nferrier@tapsellferrier.co.uk>
+   */
+  final class SocketInputStream
+    extends InputStream
+  {
+    /**
+     * Returns the number of bytes available to be read before blocking
+     */
+    public int available() throws IOException
+    {
+      return PlainSocketImpl.this.available();
+    }
+
+    /**
+     * This method not only closes the stream, it closes the underlying socket
+     * (and thus any connection) and invalidates any other Input/Output streams
+     * for the underlying impl object
+     */
+    public void close() throws IOException
+    {
+      PlainSocketImpl.this.close();
+    }
+
+    /**
+     * Reads the next byte of data and returns it as an int.  
+     *
+     * @return The byte read (as an int) or -1 if end of stream);
+     *
+     * @exception IOException If an error occurs.
+     */
+    public native int read() throws IOException;
+
+    /**
+     * Reads up to len bytes of data into the caller supplied buffer starting
+     * at offset bytes from the start of the buffer
+     *
+     * @param buf The buffer
+     * @param offset Offset into the buffer to start reading from
+     * @param len The number of bytes to read
+     *
+     * @return The number of bytes actually read or -1 if end of stream
+     *
+     * @exception IOException If an error occurs.
+     */
+    public native int read(byte[] buf, int offset, int len) throws IOException;
+  }
+
+  /**
+   * This class is used internally by <code>PlainSocketImpl</code> to be the 
+   * <code>OutputStream</code> subclass returned by its 
+   * <code>getOutputStream method</code>.  It expects only to  be used in that
+   * context.
+   *
+   * @author Nic Ferrier  <nferrier@tapsellferrier.co.uk>
+   */
+  final class SocketOutputStream
+    extends OutputStream
+  {
+    /**
+     * This method closes the stream and the underlying socket connection. This
+     * action also effectively closes any other InputStream or OutputStream
+     * object associated with the connection.
+     *
+     * @exception IOException If an error occurs
+     */
+    public void close() throws IOException
+    {
+      PlainSocketImpl.this.close();
+    }
+
+    /**
+     * Writes a byte (passed in as an int) to the given output stream
+     * 
+     * @param b The byte to write
+     *
+     * @exception IOException If an error occurs
+     */
+    public native void write(int b) throws IOException;
+
+    /**
+     * Writes len number of bytes from the array buf to the stream starting
+     * at offset bytes into the buffer.
+     *
+     * @param buf The buffer
+     * @param offset Offset into the buffer to start writing from
+     * @param len The number of bytes to write
+     *
+     * @exception IOException If an error occurs.
+     */
+    public native void write(byte[] buf, int offset, int len) throws IOException;
+  }
+}