NFS server support added to filesystem server, includes mount and portmapper services plus an NFS v3 server.

Not enabled or wired in yet.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4742 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/server/SocketPacketHandler.java

@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the
+ * License.
+ */
+package org.alfresco.filesys.server;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * Java Socket Based Packet Handler Class
+ * 
+ * @author GKSpencer
+ */
+public abstract class SocketPacketHandler implements PacketHandlerInterface {
+
+	//	Socket to read/write to/from
+
+	private Socket m_socket;
+
+	// Input/output streams for receiving/sending data
+
+	private DataInputStream m_in;
+	private DataOutputStream m_out;
+
+	/**
+	 * Class constructor
+	 * 
+	 * @param socket Socket
+	 * @param protocol String
+	 * @exception IOException
+	 */
+	protected SocketPacketHandler(Socket socket) throws IOException {
+		m_socket = socket;
+
+		//	Open the input/output streams
+
+		m_in = new DataInputStream(m_socket.getInputStream());
+		m_out = new DataOutputStream(m_socket.getOutputStream());
+	}
+
+	/**
+	 * Return the protocol name
+	 * 
+	 * @return String
+	 */
+	public abstract String getProtocolName();
+
+	/**
+	 * Return the number of bytes available for reading without blocking
+	 * 
+	 * @return int
+	 * @exception IOException
+	 */
+	public int availableBytes() throws IOException {
+		if (m_in != null)
+			return m_in.available();
+		return 0;
+	}
+
+	/**
+	 * Read a packet of data
+	 * 
+	 * @param pkt byte[]
+	 * @param offset int
+	 * @param maxLen int
+	 * @return int
+	 * @exception IOException
+	 */
+	public int readPacket(byte[] pkt, int offset, int maxLen) throws IOException {
+
+		//	Read a packet of data
+
+		if (m_in != null)
+			return m_in.read(pkt, offset, maxLen);
+		return 0;
+	}
+
+	/**
+	 * Write a packet of data
+	 * 
+	 * @param pkt byte[]
+	 * @param offset int
+	 * @param len int
+	 * @exception IOException
+	 */
+	public void writePacket(byte[] pkt, int offset, int len) throws IOException {
+
+		//	Output the raw packet
+
+		if (m_out != null) {
+
+			synchronized (m_out) {
+				m_out.write(pkt, offset, len);
+			}
+		}
+	}
+
+	/**
+	 * Close the packet handler
+	 */
+	public void closePacketHandler() {
+
+		//	Close the socket
+
+		if (m_socket != null) {
+			try {
+				m_socket.close();
+			} catch (Exception ex) {
+			}
+			m_socket = null;
+		}
+
+		//	Close the input stream
+
+		if (m_in != null) {
+			try {
+				m_in.close();
+			} catch (Exception ex) {
+			}
+			m_in = null;
+		}
+
+		//	Close the output stream
+
+		if (m_out != null) {
+			try {
+				m_out.close();
+			} catch (Exception ex) {
+			}
+			m_out = null;
+		}
+	}
+
+	/**
+	 * Return the socket
+	 * 
+	 * @return Socket
+	 */
+	protected final Socket getSocket() {
+		return m_socket;
+	}
+}