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From kayyag...@apache.org
Subject svn commit: r1036798 - /directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadInteger.java
Date Fri, 19 Nov 2010 10:48:41 GMT
Author: kayyagari
Date: Fri Nov 19 10:48:41 2010
New Revision: 1036798

URL: http://svn.apache.org/viewvc?rev=1036798&view=rev
Log:
o an abstract action to read the integer values

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

Added: directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadInteger.java
URL: http://svn.apache.org/viewvc/directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadInteger.java?rev=1036798&view=auto
==============================================================================
--- directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadInteger.java
(added)
+++ directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/codec/actions/AbstractReadInteger.java
Fri Nov 19 10:48:41 2010
@@ -0,0 +1,130 @@
+/*
+ *  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 an integer value
+ * 
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ */
+public abstract class AbstractReadInteger extends GrammarAction
+{
+    /** The logger */
+    private static final Logger LOG = LoggerFactory.getLogger( AbstractReadInteger.class
);
+
+    /** Speedup for logs */
+    private static final boolean IS_DEBUG = LOG.isDebugEnabled();
+
+    /** the acceptable minimum value for the expected value to be parsed */
+    private int minValue = 0;
+
+    /** the acceptable maximum value for the expected value to be parsed */
+    private int maxValue = Integer.MAX_VALUE;
+
+
+    /**
+     * Instantiates a new AbstractReadInteger action.
+     */
+    public AbstractReadInteger( String name )
+    {
+        super( name );
+    }
+
+
+    /**
+     * 
+     * Creates a new instance of AbstractReadInteger.
+     *
+     * @param name the action's name
+     * @param minValue the acceptable minimum value for the expected value to be read
+     * @param maxValue the acceptable maximum value for the value to be read
+     */
+    public AbstractReadInteger( String name, int minValue, int maxValue )
+    {
+        super( name );
+
+        this.minValue = minValue;
+        this.maxValue = maxValue;
+    }
+
+
+    /**
+     * 
+     * set the integer value to the appropriate field of ASN.1 object present in the container
+     * 
+     * @param value the integer value
+     * @param container the ASN.1 object's container
+     */
+    protected abstract void setIntegerValue( int value, Asn1Container container );
+
+
+    /**
+     * {@inheritDoc}
+     */
+    public final void action( Asn1Container container ) throws DecoderException
+    {
+        TLV tlv = container.getCurrentTLV();
+
+        // The Length should not be null
+        if ( tlv.getLength() == 0 )
+        {
+            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 number = IntegerDecoder.parse( value, minValue, maxValue );
+
+            if ( IS_DEBUG )
+            {
+                LOG.debug( "read integer value : {}", number );
+            }
+            
+            setIntegerValue( number, 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() );
+        }
+    }
+}



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