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/*
* Copyright (c) 2011-2012 ICM Uniwersytet Warszawski All rights reserved.
* See LICENCE file for licensing information.
*
* Derived from the code copyrighted and licensed as follows:
*
* Copyright (c) Members of the EGEE Collaboration. 2004.
* See http://www.eu-egee.org/partners/ for details on the copyright
* holders.
*
* Licensed 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 eu.emi.security.authn.x509.helpers.proxy;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.cert.X509Certificate;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.DEROctetString;
import eu.emi.security.authn.x509.helpers.CertificateHelpers;
/**
* A class for handling the SAML extension in the Certificate. OID: 1.3.6.1.4.1.3536.1.1.1.12
*
* @author joni.hahkala@cern.ch
* @author K. Benedyczak
*/
public class ProxySAMLExtension extends ASN1Object
{
/** The OID for the SAML assertion. */
public static final String SAML_OID = "1.3.6.1.4.1.3536.1.1.1.12";
/** The legacy OID for the SAML assertion. Not supported as format
* is flawed. */
public static final String LEGACY_SAML_OID = "1.3.6.1.4.1.3536.1.1.1.10";
/** The ASN.1 encoded contents of the extension. */
private DEROctetString saml = null;
/**
* Generates a new SAMLExtension object from the byte array
*
* @param bytes byte array
* @throws IOException IO exception
*/
public ProxySAMLExtension(byte[] bytes) throws IOException
{
saml = (DEROctetString) ASN1Primitive.fromByteArray(bytes);
}
/**
* Used to generate an instance from the SAML assertion in String
* format.
*
* @param samlString SAML string
*/
public ProxySAMLExtension(String samlString)
{
try
{
this.saml = new DEROctetString(samlString.getBytes("UTF-8"));
} catch (UnsupportedEncodingException e)
{
throw new RuntimeException("UTF-8 encoding is unsupported - JDK problem", e);
}
}
/**
* Returns the SAML extension from the certificate.
*
* @param cert certificate
* @return The SAML assertion extension object. In no SAML extension was
* found, null is returned.
* @throws IOException
* In case there is a problem parsing the certificate.
*/
public static ProxySAMLExtension getInstance(X509Certificate cert) throws IOException
{
byte bytes[] = CertificateHelpers.getExtensionBytes(cert, ProxySAMLExtension.SAML_OID);
if (bytes == null || bytes.length == 0)
return null;
return new ProxySAMLExtension(bytes);
}
/**
* Used to get the SAML assertion in String format.
*
* @return The SAML sertion in string format.
*/
public String getSAML()
{
try
{
return new String(saml.getOctets(), "UTF-8");
} catch (UnsupportedEncodingException e)
{
throw new RuntimeException("UTF-8 encoding is unsupported - JDK problem", e);
}
}
/**
* {@inheritDoc}
*/
@Override
public ASN1Primitive toASN1Primitive()
{
return saml.toASN1Primitive();
}
}
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