Merged V2.1 to HEAD

6418: Allow getLayeringInfo on deleted nodes.
   6419: fixes for submitting of deleted directories and regenerate renditions related fixes.
   6420: Added installs to build
   6421: Build fix for sdk
   6423: WCM-710 - Submit All feature reintroducted to WCM My Modified Files views
   6424: OpenOffice connection is now tested on bootstrap.
   6425: AWC-1446 - Space Selector would show spaces you do not have access to
   6426: WCM-699 - Staging area user assets
   6427: Rollback exceptions now explicitly handled by RetryingTransactionHelper to extract the cause of the exception.
   6428: Fix for AWC-1340
   6429: Fixed transaction boundaries for full index recovery components
   6433: AR-1660 - SMB and SMB2 signature check 


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6732 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/smb/server/SMBSrvPacket.java

@@ -266,6 +266,25 @@ public class SMBSrvPacket
         return false;
     }
 
+    /**
+     * Check if the SMB packet has an SMB2 signature.
+     * 
+     * @return boolean True if the packet has an SMB2 signature, else false.
+     */
+    public final boolean isSMB2()
+    {
+
+        // Check for the SMB2 signature block
+
+        if (m_smbbuf[SIGNATURE] == (byte) 0xFE && m_smbbuf[SIGNATURE + 1] == 'S' && m_smbbuf[SIGNATURE + 2] == 'M'
+                && m_smbbuf[SIGNATURE + 3] == 'B')
+            return true;
+
+        // Not an SMB2 packet
+
+        return false;
+    }
+
     /**
      * Clear the data byte count
      */