mirror of git://gcc.gnu.org/git/gcc.git
311 lines
7.8 KiB
Java
311 lines
7.8 KiB
Java
/* LocalSocketImpl.java -- a unix domain client socket implementation.
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.net.local;
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import java.io.FileDescriptor;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.net.InetAddress;
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import java.net.SocketAddress;
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import java.net.SocketException;
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import java.net.SocketImpl;
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final class LocalSocketImpl extends SocketImpl
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{
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// Fields.
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// -------------------------------------------------------------------------
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private boolean created;
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private InputStream in;
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private OutputStream out;
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private int socket_fd;
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private LocalSocketAddress local;
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private LocalSocketAddress remote;
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// Constructor.
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// -------------------------------------------------------------------------
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LocalSocketImpl ()
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{
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this (false);
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}
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LocalSocketImpl (boolean nocreate)
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{
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created = nocreate;
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socket_fd = -1;
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fd = new FileDescriptor ();
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}
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// Instance methods.
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// -------------------------------------------------------------------------
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public void setOption (int opt, Object value) throws SocketException
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{
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throw new SocketException ("local sockets do not support options");
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}
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public Object getOption (int opt) throws SocketException
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{
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throw new SocketException ("local sockets do not support options");
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}
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protected void create (boolean stream) throws IOException { }
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protected void listen (int timeout) throws IOException { }
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protected void accept (LocalSocketImpl socket) throws IOException { }
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protected int available () throws IOException { return -1; }
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protected void close () throws IOException { }
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protected void sendUrgentData (int data) throws IOException { }
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protected void shutdownInput () throws IOException { }
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protected void shutdownOutput () throws IOException { }
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void unlink () throws IOException { }
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void localBind (LocalSocketAddress addr) throws IOException { }
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void localConnect (LocalSocketAddress addr) throws IOException { }
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int read (byte[] buf, int off, int len) throws IOException { return -1; }
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void write (byte[] buf, int off, int len) throws IOException { }
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void doCreate () throws IOException
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{
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if (!created)
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{
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create (true);
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}
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}
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LocalSocketAddress getLocalAddress ()
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{
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return local;
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}
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LocalSocketAddress getRemoteAddress ()
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{
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return remote;
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}
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protected InputStream getInputStream()
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{
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if (in == null)
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{
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in = new LocalInputStream (this);
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}
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return in;
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}
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protected OutputStream getOutputStream()
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{
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if (out == null)
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{
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out = new LocalOutputStream (this);
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}
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return out;
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}
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protected void accept (SocketImpl impl) throws IOException
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{
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if (! (impl instanceof LocalSocketImpl))
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{
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throw new IllegalArgumentException ("not a local socket");
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}
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accept ((LocalSocketImpl) impl);
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}
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protected void connect (String host, int port) throws IOException
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{
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throw new SocketException ("this is a local socket");
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}
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protected void connect (InetAddress addr, int port) throws IOException
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{
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throw new SocketException ("this is a local socket");
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}
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protected void connect(SocketAddress addr, int timeout) throws IOException
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{
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if (! (addr instanceof LocalSocketAddress))
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{
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throw new SocketException ("address is not local");
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}
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localConnect ((LocalSocketAddress) addr);
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}
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protected void bind (InetAddress addr, int port) throws IOException
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{
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throw new SocketException ("this is a local socket");
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}
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protected void bind (SocketAddress addr) throws IOException
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{
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if (! (addr instanceof LocalSocketAddress))
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{
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throw new SocketException ("address is not local");
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}
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localBind ((LocalSocketAddress) addr);
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}
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// Inner classes.
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// -------------------------------------------------------------------------
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class LocalInputStream extends InputStream
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{
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// Field.
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// -----------------------------------------------------------------------
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private final LocalSocketImpl impl;
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// Constructor.
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// -----------------------------------------------------------------------
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LocalInputStream (LocalSocketImpl impl)
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{
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this.impl = impl;
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}
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// Instance methods.
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// -----------------------------------------------------------------------
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public int available () throws IOException
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{
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return impl.available();
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}
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public boolean markSupported ()
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{
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return false;
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}
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public void mark (int readLimit)
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{
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}
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public void reset () throws IOException
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{
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throw new IOException ("mark/reset not supported");
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}
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public void close () throws IOException
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{
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impl.close();
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}
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public int read () throws IOException
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{
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byte[] buf = new byte[1];
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int ret = read (buf);
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if (ret != -1)
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{
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return buf[0] & 0xFF;
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}
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else
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{
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return -1;
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}
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}
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public int read (byte[] buf) throws IOException
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{
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return read (buf, 0, buf.length);
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}
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public int read (byte[] buf, int off, int len) throws IOException
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{
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int ret = impl.read (buf, off, len);
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if (ret == 0)
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{
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return -1;
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}
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return ret;
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}
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}
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class LocalOutputStream extends OutputStream
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{
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// Field.
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// -----------------------------------------------------------------------
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private final LocalSocketImpl impl;
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// Constructor.
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// -----------------------------------------------------------------------
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LocalOutputStream (LocalSocketImpl impl)
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{
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this.impl = impl;
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}
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// Instance methods.
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// -----------------------------------------------------------------------
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public void close () throws IOException
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{
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impl.close ();
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}
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public void flush () throws IOException
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{
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}
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public void write (int b) throws IOException
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{
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byte[] buf = new byte [1];
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buf[0] = (byte) b;
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write (buf);
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}
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public void write (byte[] buf) throws IOException
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{
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write (buf, 0, buf.length);
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}
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public void write (byte[] buf, int off, int len) throws IOException
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{
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impl.write (buf, off, len);
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}
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}
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}
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