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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package netscape.security.x509;
import java.io.*;
import sun.io.CharToByteConverter;
import netscape.security.util.*;
/**
* A AVAValueConverter that converts a IA5String attribute to a DerValue
* and vice versa. An example an attribute that is a IA5String string is "E".
* @see AVAValueConverter
*
* @author Lily Hsiao, Slava Galperin at Netscape Communications, Inc.
*/
public class IA5StringConverter implements AVAValueConverter
{
// public constructors
/*
* Contructs a IA5String Converter.
*/
public IA5StringConverter()
{
}
/*
* Converts a string with ASN.1 IA5String characters to a DerValue.
*
* @param valueString a string with IA5String characters.
*
* @return a DerValue.
*
* @exception IOException if a IA5String CharToByteConverter is not
* available for the conversion.
*/
public DerValue getValue(String valueString)
throws IOException
{
return getValue(valueString, null);
}
public DerValue getValue(String valueString, byte[] encodingOrder)
throws IOException
{
ASN1CharStrConvMap map;
CharToByteConverter cbc;
byte[] bbuf = new byte[valueString.length()];
map = ASN1CharStrConvMap.getDefault();
try {
cbc = map.getCBC(DerValue.tag_IA5String);
if (cbc == null)
throw new IOException("No CharToByteConverter for IA5String");
cbc.convert(valueString.toCharArray(), 0, valueString.length(),
bbuf, 0, bbuf.length);
}
catch (java.io.CharConversionException e) {
throw new IllegalArgumentException(
"Invalid IA5String AVA Value string");
} catch (InstantiationException e) {
throw new IOException("Cannot instantiate CharToByteConverter");
} catch (IllegalAccessException e) {
throw new IOException("Illegal access loading CharToByteConverter");
}
return new DerValue(DerValue.tag_IA5String, bbuf);
}
/*
* Converts a BER encoded value of IA5String to a DER encoded value.
* Checks if the BER encoded value is a IA5String.
* NOTE only DER encoding is currently supported on for the BER
* encoded value.
*
* @param berStream a byte array of the BER encoded value.
*
* @return a DerValue.
*
* @exception IOException if the BER value cannot be converted
* to a IA5String DER value.
*/
public DerValue getValue(byte[] berStream)
throws IOException
{
DerValue value = new DerValue(berStream);
if (value.tag == DerValue.tag_IA5String)
return value;
if (value.tag == DerValue.tag_PrintableString)
return value;
throw new IOException("Invalid IA5String AVA Value.");
}
/*
* Converts a DerValue of IA5String to a java string with IA5String
* characters.
*
* @param avaValue a DerValue.
*
* @return a string with IA5String characters.
*
* @exception IOException if the DerValue is not a IA5String i.e.
* The DerValue cannot be converted to a string
* with IA5String characters.
*/
public String getAsString(DerValue avaValue)
throws IOException
{
if (avaValue.tag == DerValue.tag_IA5String)
return avaValue.getIA5String();
if (avaValue.tag == DerValue.tag_PrintableString)
return avaValue.getPrintableString();
throw new IOException("Invalid IA5String AVA Value.");
}
}
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