/* * %W% %E% * * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER   *    * This program 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.    *    * This program 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 at /legal/license.txt).    *    * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa   * Clara, CA 95054 or visit www.sun.com if you need additional   * information or have any questions.  * */package com.sun.cdc.io.j2me.serversocket;import java.io.*;import java.net.*;import javax.microedition.io.*;import com.sun.cdc.io.j2me.*;import com.sun.cdc.io.*;/** * StreamConnectionNotifier to the Palm Server Socket API. * * @author  Nik Shaylor * @version 1.0 10/08/99 */public class Protocol extends ConnectionBase                       implements StreamConnectionNotifier, ServerSocketConnection {    /** Server Socket object */    ServerSocket ssocket;    /*     * Check for listen permission on the given port. A SecurityException     * will be thrown if the permission is not available. The MIDP     * protocol handler should override this method to implement the     * proper MIDP security check.     */    protected void checkPermission(int port) {        // Check for SecurityManager.checkListen()        java.lang.SecurityManager sm = System.getSecurityManager();        if (sm != null){	    sm.checkListen(port);	}        return;    }            /**     * Open the connection     * @param name the target for the connection     * @param writeable a flag that is true if the caller expects to write to the     *        connection.     * @param timeouts A flag to indicate that the called wants timeout exceptions     * <p>     * The name string for this protocol should be:     * "<port number>     */    public void open(String name, int mode, boolean timeouts) throws IOException {        //if(name.charAt(0) != '/' || name.charAt(1) != '/' || name.charAt(2) != ':') {        if(name.charAt(0) != '/' || name.charAt(1) != '/') {             throw new IllegalArgumentException("Protocol must start with \"//\" "+name);        }        /* socket:// case.  System assigned incoming port */        if (name.length() == 2) {           open();           return;        }        if(name.charAt(2) != ':') {             throw new IllegalArgumentException("Protocol must start with \"//:\" "+name);        }        name = name.substring(3);         /* socket://: case.  System assigned incoming port */        if (name.length() == 0) {            checkPermission(0);            open();            return;        }        try {            final int port;            InetAddress hostAddress = InetAddress.getLocalHost();            /* Get the port number */            port = Integer.parseInt(name);            checkPermission(port);            /* Open the socket: inbound server. Use a doPrivileged             * block to avoid excessive prompting.             */            ssocket =                (ServerSocket)java.security.AccessController.doPrivileged(                 new java.security.PrivilegedExceptionAction() {                     public Object run()                         throws java.security.PrivilegedActionException,                                IOException {                         return new ServerSocket(port);                     }                 });        } catch(NumberFormatException x) {            throw new IllegalArgumentException("Invalid port number in "+name);        } catch(java.security.PrivilegedActionException pae) {            IOException ioe = (IOException)pae.getException();            throw ioe;        }    }    /**     * Open the connection to an arbitrary system selected port and address     */     public void open() throws IOException {        ssocket = new ServerSocket();        /* binding to null to get the system assigned port */        ssocket.bind(null);     }    /**     * Returns a GenericConnection that represents a server side     * socket connection     * @return     a socket to communicate with a client.     * @exception  IOException  if an I/O error occurs when creating the     *                          input stream.     */    public StreamConnection acceptAndOpen() throws IOException {        Socket soc = ssocket.accept();        com.sun.cdc.io.j2me.socket.Protocol con =            new com.sun.cdc.io.j2me.socket.Protocol();        con.open(soc);        return con;    }    /**     * Close the connection.     *     * @exception  IOException  if an I/O error occurs when closing the     *                          connection.     */    public void close() throws IOException {        ssocket.close();    }    /**     * Gets the local address to which the socket is bound.     *     * <P>The host address(IP number) that can be used to connect to this     * end of the socket connection from an external system.     * Since IP addresses may be dynamically assigned, a remote application     * will need to be robust in the face of IP number reassignment.</P>     * <P> The local hostname (if available) can be accessed from     * <code> System.getProperty("microedition.hostname")</code>     * </P>     *     * @return the local address to which the socket is bound.     * @exception  IOException  if the connection was closed     * @see SocketConnection     */    public  String getLocalAddress() throws IOException {         if (ssocket.isClosed())            throw new IOException("ServerSocketConnection is closed");	InetAddress addr = InetAddress.getLocalHost();        if (addr == null)             return null;        else             return addr.getHostAddress();    }    /**     * Returns the local port to which this socket is bound.     *     * @return the local port number to which this socket is connected.     * @exception  IOException  if the connection was closed     * @see SocketConnection     */    public  int  getLocalPort() throws IOException {        if (ssocket.isClosed())            throw new IOException("ServerSocketConnection is closed");        return  ssocket.getLocalPort();    }}