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From elecha...@apache.org
Subject svn commit: r1037092 - in /directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos: KerberosConstants.java components/TransitedEncoding.java
Date Sat, 20 Nov 2010 00:20:59 GMT
Author: elecharny
Date: Sat Nov 20 00:20:59 2010
New Revision: 1037092

URL: http://svn.apache.org/viewvc?rev=1037092&view=rev
Log:
Added the TransitedEncoding structure and tags

Added:
    directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/components/TransitedEncoding.java
Modified:
    directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/KerberosConstants.java

Modified: directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/KerberosConstants.java
URL: http://svn.apache.org/viewvc/directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/KerberosConstants.java?rev=1037092&r1=1037091&r2=1037092&view=diff
==============================================================================
--- directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/KerberosConstants.java
(original)
+++ directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/KerberosConstants.java
Sat Nov 20 00:20:59 2010
@@ -153,4 +153,8 @@ public class KerberosConstants
     /** PrincipalName's tags */
     public static final int PRINCIPAL_NAME_NAME_TYPE_TAG = 0xA0;
     public static final int PRINCIPAL_NAME_NAME_STRING_TAG = 0xA1;
+
+    /** TransitedEncoding tags */
+    public static final int TRANSITED_ENCODING_TR_TYPE_TAG = 0xA0;
+    public static final int TRANSITED_ENCODING_CONTENTS_TAG = 0xA1;
 }

Added: directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/components/TransitedEncoding.java
URL: http://svn.apache.org/viewvc/directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/components/TransitedEncoding.java?rev=1037092&view=auto
==============================================================================
--- directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/components/TransitedEncoding.java
(added)
+++ directory/apacheds/trunk/kerberos-codec/src/main/java/org/apache/directory/shared/kerberos/components/TransitedEncoding.java
Sat Nov 20 00:20:59 2010
@@ -0,0 +1,245 @@
+/*
+ *  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.components;
+
+
+import java.nio.BufferOverflowException;
+import java.nio.ByteBuffer;
+
+import org.apache.directory.server.i18n.I18n;
+import org.apache.directory.shared.asn1.AbstractAsn1Object;
+import org.apache.directory.shared.asn1.ber.tlv.TLV;
+import org.apache.directory.shared.asn1.ber.tlv.UniversalTag;
+import org.apache.directory.shared.asn1.ber.tlv.Value;
+import org.apache.directory.shared.asn1.codec.EncoderException;
+import org.apache.directory.shared.kerberos.KerberosConstants;
+import org.apache.directory.shared.kerberos.codec.types.TransitedEncodingType;
+import org.apache.directory.shared.ldap.util.StringTools;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * The TransitedEncoding structure.
+ * 
+ * The ASN.1 grammar is :
+ * <pre>
+ * -- encoded Transited field
+ * TransitedEncoding       ::= SEQUENCE {
+ *         tr-type         [0] Int32 -- must be registered --,
+ *         contents        [1] OCTET STRING
+ * }
+ * </pre>
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ */
+public class TransitedEncoding extends AbstractAsn1Object
+{
+    /** The logger */
+    private static final Logger log = LoggerFactory.getLogger( TransitedEncoding.class );
+
+    /** Speedup for logs */
+    private static final boolean IS_DEBUG = log.isDebugEnabled();
+
+    /** 
+     * The transited type. One of :
+     * NULL
+     * DOMAIN_X500_COMPRESS
+     */
+    private TransitedEncodingType trType;
+
+    /** The transited data */
+    private byte[] contents;
+
+    // Storage for computed lengths
+    private transient int trTypeLength;
+    private transient int contentsLength;
+    private transient int transitedEncodingLength;
+
+
+    /**
+     * Creates a new instance of TransitedEncoding.
+     */
+    public TransitedEncoding()
+    {
+        trType = TransitedEncodingType.NULL;
+        contents = new byte[0];
+    }
+
+
+    /**
+     * Returns the contents.
+     *
+     * @return The contents.
+     */
+    public byte[] getContents()
+    {
+        return contents;
+    }
+    
+    
+    /**
+     * Set the contents
+     * @param contents The contents
+     */
+    public void setContents( byte[] contents )
+    {
+        this.contents = contents;
+    }
+
+
+    /**
+     * Returns the {@link TransitedEncodingType}.
+     *
+     * @return The {@link TransitedEncodingType}.
+     */
+    public TransitedEncodingType getTrType()
+    {
+        return trType;
+    }
+    
+    
+    /**
+     * Set the transited encoding type
+     * @param trType The transited encoding type
+     */
+    public void setTrType( TransitedEncodingType trType )
+    {
+        this.trType = trType;
+    }
+
+
+    /**
+     * Compute the TransitedEncoding length
+     * 
+     * <pre>
+     * TransitedEncoding :
+     * 
+     * 0x30 L1 TransitedEncoding
+     *  |
+     *  +--> 0xA0 L2 trType tag
+     *  |     |
+     *  |     +--> 0x02 L2-1 trType (int)
+     *  |
+     *  +--> 0xA1 L3 contents tag
+     *        |
+     *        +--> 0x04 L3-1 contents (OCTET STRING)
+     *        
+     *  where L1 = L2 + lenght(0xA0) + length(L2) +
+     *             L3 + lenght(0xA1) + length(L3) 
+     *  and
+     *  L2 = L2-1 + length(0x02) + length( L2-1) 
+     *  L3 = L3-1 + length(0x04) + length( L3-1) 
+     *  </pre>
+     */
+    public int computeLength()
+    {
+        // Compute the trType. The Length will always be contained in 1 byte
+        trTypeLength = 1 + 1 + Value.getNbBytes( trType.getValue() );
+        transitedEncodingLength = 1 + TLV.getNbBytes( trTypeLength ) + trTypeLength;
+
+        // Compute the contents length
+        if ( contents == null )
+        {
+            contentsLength = 1 + 1;
+        }
+        else
+        {
+            contentsLength = 1 + TLV.getNbBytes( contents.length ) + contents.length;
+        }
+
+        transitedEncodingLength += 1 + TLV.getNbBytes( contentsLength ) + contentsLength;
+
+        // Compute the whole sequence length
+        int transitedEncodingSeqLength = 1 + Value.getNbBytes( transitedEncodingLength )
+ transitedEncodingLength;
+
+        return transitedEncodingSeqLength;
+    }
+
+
+    /**
+     * Encode the TransitedEncoding message to a PDU. 
+     * 
+     * TransitedEncoding :
+     * 
+     * 0x30 LL
+     *   0xA0 LL 
+     *     0x02 0x01 trType
+     *   0xA1 LL 
+     *     0x04 LL contents
+     * 
+     * @param buffer The buffer where to put the PDU. It should have been allocated
+     * before, with the right size.
+     * @return The constructed PDU.
+     */
+    public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException
+    {
+        if ( buffer == null )
+        {
+            throw new EncoderException( I18n.err( I18n.ERR_148 ) );
+        }
+
+        try
+        {
+            // The AuthorizationDataEntry SEQ Tag
+            buffer.put( UniversalTag.SEQUENCE.getValue() );
+            buffer.put( TLV.getBytes( transitedEncodingLength ) );
+
+            // The tr-type, first the tag, then the value
+            buffer.put( ( byte )KerberosConstants.TRANSITED_ENCODING_TR_TYPE_TAG );
+            buffer.put( TLV.getBytes( trTypeLength ) );
+            Value.encode( buffer, trType.getValue() );
+
+            // The contents, first the tag, then the value
+            buffer.put( ( byte )KerberosConstants.TRANSITED_ENCODING_CONTENTS_TAG );
+            buffer.put( TLV.getBytes( contentsLength ) );
+            Value.encode( buffer, contents );
+        }
+        catch ( BufferOverflowException boe )
+        {
+            log.error( I18n.err( I18n.ERR_147, 1 + TLV.getNbBytes( transitedEncodingLength
)
+                + transitedEncodingLength, buffer.capacity() ) );
+            throw new EncoderException( I18n.err( I18n.ERR_138 ) );
+        }
+
+        if ( IS_DEBUG )
+        {
+            log.debug( "TransitedEncoding encoding : {}", StringTools.dumpBytes( buffer.array()
) );
+            log.debug( "TransitedEncoding initial value : {}", toString() );
+        }
+
+        return buffer;
+    }
+
+
+    /**
+     * @see Object#toString()
+     */
+    public String toString()
+    {
+        StringBuilder sb = new StringBuilder();
+
+        sb.append( "TransitedEncoding : {\n" );
+        sb.append( "    tr-type: " ).append( trType ).append( '\n' );
+
+        sb.append( "    contents: " ).append( StringTools.dumpBytes( contents ) ).append(
"\n}\n" );
+
+        return sb.toString();
+    }
+}



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