Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/smb/mailslot/WinsockNetBIOSHostAnnouncer.java

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+/*
+ * 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.smb.mailslot;
+
+import org.alfresco.filesys.netbios.NetBIOSName;
+import org.alfresco.filesys.netbios.win32.NetBIOS;
+import org.alfresco.filesys.netbios.win32.NetBIOSSocket;
+import org.alfresco.filesys.netbios.win32.Win32NetBIOS;
+import org.alfresco.filesys.smb.server.win32.Win32NetBIOSSessionSocketHandler;
+
+/**
+ * Winsock NetBIOS Host Announcer Class
+ * 
+ * <p>
+ * The host announcer class periodically broadcasts a host announcement datagram to inform other
+ * Windows networking hosts of the local hosts existence and capabilities.
+ * 
+ * <p>
+ * The Win32 NetBIOS host announcer sends out the announcements using datagrams sent via Winsock calls.
+ */
+public class WinsockNetBIOSHostAnnouncer extends HostAnnouncer
+{
+    // Associated session handler
+
+    private Win32NetBIOSSessionSocketHandler m_handler;
+
+    // Winsock NetBIOS datagram socket
+    
+    private NetBIOSSocket m_dgramSocket;
+    
+    /**
+     * Create a host announcer.
+     * 
+     * @param sessHandler Win32NetBIOSSessionSocketHandler
+     * @param domain Domain name to announce to
+     * @param intval Announcement interval, in minutes
+     */
+    public WinsockNetBIOSHostAnnouncer(Win32NetBIOSSessionSocketHandler handler, String domain, int intval)
+    {
+
+        // Save the handler
+
+        m_handler = handler;
+
+        // Add the host to the list of names to announce
+
+        addHostName(handler.getServerName());
+        setDomain(domain);
+        setInterval(intval);
+    }
+
+    /**
+     * Return the LANA
+     * 
+     * @return int
+     */
+    public final int getLana()
+    {
+        return m_handler.getLANANumber();
+    }
+
+    /**
+     * Initialize the host announcer.
+     * 
+     * @exception Exception
+     */
+    protected void initialize() throws Exception
+    {
+        // Set the thread name
+
+        setName("WinsockHostAnnouncer_L" + getLana());
+        
+        // Create the Winsock NetBIOS datagram socket
+        
+        m_dgramSocket = NetBIOSSocket.createDatagramSocket(getLana());
+    }
+
+    /**
+     * Determine if the network connection used for the host announcement is valid
+     * 
+     * @return boolean
+     */
+    public boolean isNetworkEnabled()
+    {
+        return m_handler.isLANAValid();
+    }
+
+    /**
+     * Send an announcement broadcast.
+     * 
+     * @param hostName Host name being announced
+     * @param buf Buffer containing the host announcement mailslot message.
+     * @param offset Offset to the start of the host announcement message.
+     * @param len Host announcement message length.
+     */
+    protected void sendAnnouncement(String hostName, byte[] buf, int offset, int len) throws Exception
+    {
+
+        // Build the destination NetBIOS name using the domain/workgroup name
+
+        NetBIOSName destNbName = new NetBIOSName(getDomain(), NetBIOSName.MasterBrowser, false);
+
+        // Send the host announce datagram via the Win32 Netbios() API call
+
+        int sts = m_dgramSocket.sendDatagram(destNbName, buf, 0, len);
+        if ( sts != len)
+            logger.debug("WinsockNetBIOS host announce error");
+    }
+}