source: Ballon/out/artifacts/geisa_artifact/WEB-INF/lib/mysql-connector-java-5.1.21/src/com/mysql/jdbc/NamedPipeSocketFactory.java

/*
 Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program 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; version 2
  of the License.

  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 for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA



 */
package com.mysql.jdbc;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.net.Socket;
import java.net.SocketException;
import java.sql.SQLException;
import java.util.Properties;

/**
 * A socket factory for named pipes (on Windows)
 * 
 * @author Mark Matthews
 */
public class NamedPipeSocketFactory implements SocketFactory, SocketMetadata {
        /**
         * A socket that encapsulates named pipes on Windows
         */
        class NamedPipeSocket extends Socket {
                private boolean isClosed = false;

                private RandomAccessFile namedPipeFile;

                NamedPipeSocket(String filePath) throws IOException {
                        if ((filePath == null) || (filePath.length() == 0)) {
                                throw new IOException(Messages
                                                .getString("NamedPipeSocketFactory.4")); //$NON-NLS-1$
                        }

                        this.namedPipeFile = new RandomAccessFile(filePath, "rw"); //$NON-NLS-1$
                }

                /**
                 * @see java.net.Socket#close()
                 */
                public synchronized void close() throws IOException {
                        this.namedPipeFile.close();
                        this.isClosed = true;
                }

                /**
                 * @see java.net.Socket#getInputStream()
                 */
                public InputStream getInputStream() throws IOException {
                        return new RandomAccessFileInputStream(this.namedPipeFile);
                }

                /**
                 * @see java.net.Socket#getOutputStream()
                 */
                public OutputStream getOutputStream() throws IOException {
                        return new RandomAccessFileOutputStream(this.namedPipeFile);
                }

                /**
                 * @see java.net.Socket#isClosed()
                 */
                public boolean isClosed() {
                        return this.isClosed;
                }
        }

        /**
         * Enables OutputStream-type functionality for a RandomAccessFile
         */
        class RandomAccessFileInputStream extends InputStream {
                RandomAccessFile raFile;

                RandomAccessFileInputStream(RandomAccessFile file) {
                        this.raFile = file;
                }

                /**
                 * @see java.io.InputStream#available()
                 */
                public int available() throws IOException {
                        return -1;
                }

                /**
                 * @see java.io.InputStream#close()
                 */
                public void close() throws IOException {
                        this.raFile.close();
                }

                /**
                 * @see java.io.InputStream#read()
                 */
                public int read() throws IOException {
                        return this.raFile.read();
                }

                /**
                 * @see java.io.InputStream#read(byte[])
                 */
                public int read(byte[] b) throws IOException {
                        return this.raFile.read(b);
                }

                /**
                 * @see java.io.InputStream#read(byte[], int, int)
                 */
                public int read(byte[] b, int off, int len) throws IOException {
                        return this.raFile.read(b, off, len);
                }
        }

        /**
         * Enables OutputStream-type functionality for a RandomAccessFile
         */
        class RandomAccessFileOutputStream extends OutputStream {
                RandomAccessFile raFile;

                RandomAccessFileOutputStream(RandomAccessFile file) {
                        this.raFile = file;
                }

                /**
                 * @see java.io.OutputStream#close()
                 */
                public void close() throws IOException {
                        this.raFile.close();
                }

                /**
                 * @see java.io.OutputStream#write(byte[])
                 */
                public void write(byte[] b) throws IOException {
                        this.raFile.write(b);
                }

                /**
                 * @see java.io.OutputStream#write(byte[], int, int)
                 */
                public void write(byte[] b, int off, int len) throws IOException {
                        this.raFile.write(b, off, len);
                }

                /**
                 * @see java.io.OutputStream#write(int)
                 */
                public void write(int b) throws IOException {
                }
        }

        public static final String NAMED_PIPE_PROP_NAME = "namedPipePath"; //$NON-NLS-1$

        private Socket namedPipeSocket;

        /**
         * Constructor for NamedPipeSocketFactory.
         */
        public NamedPipeSocketFactory() {
                super();
        }

        /**
         * @see com.mysql.jdbc.SocketFactory#afterHandshake()
         */
        public Socket afterHandshake() throws SocketException, IOException {
                return this.namedPipeSocket;
        }

        /**
         * @see com.mysql.jdbc.SocketFactory#beforeHandshake()
         */
        public Socket beforeHandshake() throws SocketException, IOException {
                return this.namedPipeSocket;
        }

        /**
         * @see com.mysql.jdbc.SocketFactory#connect(String, Properties)
         */
        public Socket connect(String host, int portNumber /* ignored */,
                        Properties props) throws SocketException, IOException {
                String namedPipePath = props.getProperty(NAMED_PIPE_PROP_NAME);

                if (namedPipePath == null) {
                        namedPipePath = "\\\\.\\pipe\\MySQL"; //$NON-NLS-1$
                } else if (namedPipePath.length() == 0) {
                        throw new SocketException(Messages
                                        .getString("NamedPipeSocketFactory.2") //$NON-NLS-1$
                                        + NAMED_PIPE_PROP_NAME
                                        + Messages.getString("NamedPipeSocketFactory.3")); //$NON-NLS-1$
                }

                this.namedPipeSocket = new NamedPipeSocket(namedPipePath);

                return this.namedPipeSocket;
        }

        public boolean isLocallyConnected(ConnectionImpl conn) throws SQLException {
                // Until I learn otherwise (or learn how to detect it), I assume that we are
                return true;
        }
}