/*
* 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.studio.ldapbrowser.core.utils;
import org.apache.directory.studio.ldapbrowser.core.model.IValue;
/**
* Utilies for filter handling.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class LdapFilterUtils
{
/**
* Creates a filter from the given value.
*
* @param value the value
*
* @return the filter
*/
public static String getFilter( IValue value )
{
if ( value.isString() )
{
return "(" + value.getAttribute().getDescription() + "=" + getEncodedValue( value.getStringValue() ) + ")"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
else
{
StringBuffer filter = new StringBuffer();
filter.append( "(" ); //$NON-NLS-1$
filter.append( value.getAttribute().getDescription() );
filter.append( "=" ); //$NON-NLS-1$
byte[] bytes = value.getBinaryValue();
for ( int i = 0; i < bytes.length; i++ )
{
int b = ( int ) bytes[i];
if ( b < 0 )
{
b = 256 + b;
}
String s = Integer.toHexString( b );
filter.append( "\\" ); //$NON-NLS-1$
if ( s.length() == 1 )
{
filter.append( "0" ); //$NON-NLS-1$
}
filter.append( s );
}
filter.append( ")" ); //$NON-NLS-1$
return filter.toString();
}
}
/**
* Encodes the given value according RFC2254.
*
* <pre>
* If a value should contain any of the following characters
* Character ASCII value
* ---------------------------
* * 0x2a
* ( 0x28
* ) 0x29
* \ 0x5c
* NUL 0x00
* the character must be encoded as the backslash '\' character (ASCII
* 0x5c) followed by the two hexadecimal digits representing the ASCII
* value of the encoded character. The case of the two hexadecimal
* digits is not significant.
* </pre>
*
* @param value the value
*
* @return the encoded value
*/
public static String getEncodedValue( String value )
{
value = value.replaceAll( "\\\\", "\\\\5c" ); //$NON-NLS-1$ //$NON-NLS-2$
value = value.replaceAll( "" + '\u0000', "\\\\00" ); //$NON-NLS-1$ //$NON-NLS-2$
value = value.replaceAll( "\\*", "\\\\2a" ); //$NON-NLS-1$ //$NON-NLS-2$
value = value.replaceAll( "\\(", "\\\\28" ); //$NON-NLS-1$ //$NON-NLS-2$
value = value.replaceAll( "\\)", "\\\\29" ); //$NON-NLS-1$ //$NON-NLS-2$
return value;
}
}