svn commit: r1036372 - /directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java

[ka...@apache.org]

Author: kayyagari
Date: Thu Nov 18 09:46:23 2010
New Revision: 1036372

URL: http://svn.apache.org/viewvc?rev=1036372&view=rev
Log:
o an abstract class intended for reusing the code for reading pvno

Added:
    directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java

Added: directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java
URL: http://svn.apache.org/viewvc/directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java?rev=1036372&view=auto
==============================================================================
--- directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java (added)
+++ directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadPvno.java Thu Nov 18 09:46:23 2010
@@ -0,0 +1,116 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *  
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ *  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.apache.directory.shared.kerberos.codec.actions;
+
+
+import org.apache.directory.shared.asn1.ber.Asn1Container;
+import org.apache.directory.shared.asn1.ber.grammar.GrammarAction;
+import org.apache.directory.shared.asn1.ber.tlv.TLV;
+import org.apache.directory.shared.asn1.ber.tlv.Value;
+import org.apache.directory.shared.asn1.codec.DecoderException;
+import org.apache.directory.shared.asn1.util.IntegerDecoder;
+import org.apache.directory.shared.asn1.util.IntegerDecoderException;
+import org.apache.directory.shared.i18n.I18n;
+import org.apache.directory.shared.ldap.util.StringTools;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * The action used to read the PVNO
+ * 
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ */
+public abstract class AbstractReadPvno extends GrammarAction
+{
+    /** The logger */
+    private static final Logger LOG = LoggerFactory.getLogger( AbstractReadPvno.class );
+
+    /** Speedup for logs */
+    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
+
+
+    /**
+     * Creates a new instance of AbstractReadPvno.
+     *
+     * @param name the name of the action
+     */
+    public AbstractReadPvno( String name )
+    {
+        super( name );
+    }
+
+
+    /**
+     * sets the pvno on the ASN.1 object present in the container
+     * 
+     * @param pvno the protocol version number received
+     * @param container the ASN.1 object's container
+     */
+    protected abstract void setPvno( int pvno, Asn1Container container );
+
+
+    /**
+     * {@inheritDoc}
+     */
+    public final void action( Asn1Container container ) throws DecoderException
+    {
+        TLV tlv = container.getCurrentTLV();
+
+        // The Length should not be null and should be 1
+        if ( tlv.getLength() != 1 )
+        {
+            LOG.error( I18n.err( I18n.ERR_04066 ) );
+
+            // This will generate a PROTOCOL_ERROR
+            throw new DecoderException( I18n.err( I18n.ERR_04067 ) );
+        }
+
+        Value value = tlv.getValue();
+
+        try
+        {
+            int pvno = IntegerDecoder.parse( value );
+
+            if ( pvno != 5 )
+            {
+                LOG.error( I18n.err( I18n.ERR_04070, StringTools.dumpBytes( value.getData() ), "The PVNO should be 5" ) );
+
+                // This will generate a PROTOCOL_ERROR
+                throw new DecoderException( "The PVNO should be 5" );
+            }
+
+            if ( IS_DEBUG )
+            {
+                LOG.debug( "pvno : {}", pvno );
+            }
+
+            setPvno( pvno, container );
+        }
+        catch ( IntegerDecoderException ide )
+        {
+            LOG.error( I18n.err( I18n.ERR_04070, StringTools.dumpBytes( value.getData() ), ide
+                .getLocalizedMessage() ) );
+
+            // This will generate a PROTOCOL_ERROR
+            throw new DecoderException( ide.getMessage() );
+        }
+    }
+}