/*
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.wso2.carbon.identity.sso.saml.ui;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.axiom.om.util.UUIDGenerator;
import org.opensaml.DefaultBootstrap;
import org.opensaml.common.SAMLVersion;
import org.opensaml.saml2.core.*;
import org.opensaml.saml2.core.impl.*;
import org.opensaml.xml.ConfigurationException;
import org.opensaml.xml.XMLObject;
import org.opensaml.xml.util.Base64;
import org.opensaml.xml.io.MarshallerFactory;
import org.opensaml.xml.io.Marshaller;
import org.wso2.carbon.identity.base.*;
import org.wso2.carbon.identity.base.IdentityException;
import org.w3c.dom.Element;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;
import java.io.ByteArrayOutputStream;
public class ErrorResponseBuilder {
private static Log log = LogFactory.getLog(ErrorResponseBuilder.class);
//Do the bootstrap first
static {
try {
DefaultBootstrap.bootstrap();
} catch (ConfigurationException e) {
log.error("Errors when bootstrapping the OpenSAML2 library", e);
}
}
public static String generateErrorneousResponse() {
Response response = new ResponseBuilder().buildObject();
response.setIssuer(getIssuer());
response.setStatus(buildStatus());
response.setVersion(SAMLVersion.VERSION_20);
response.setID(UUIDGenerator.getUUID());
try {
return encode(marshall(response));
} catch (IdentityException e) {
return null;
}
}
private static Status buildStatus() {
Status stat = new StatusBuilder().buildObject();
//Set the status code
StatusCode statCode = new StatusCodeBuilder().buildObject();
statCode.setValue("urn:oasis:names:tc:SAML:2.0:status:Responder");
stat.setStatusCode(statCode);
StatusMessage statMesssage = new StatusMessageBuilder().buildObject();
statMesssage.setMessage("Error when processing the Authentication Request");
stat.setStatusMessage(statMesssage);
return stat;
}
private static String marshall(XMLObject xmlObject) throws org.wso2.carbon.identity.base.IdentityException {
try {
System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
"org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");
MarshallerFactory marshallerFactory = org.opensaml.xml.Configuration.getMarshallerFactory();
Marshaller marshaller = marshallerFactory.getMarshaller(xmlObject);
Element element = marshaller.marshall(xmlObject);
ByteArrayOutputStream byteArrayOutputStrm = new ByteArrayOutputStream();
DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
DOMImplementationLS impl =
(DOMImplementationLS) registry.getDOMImplementation("LS");
LSSerializer writer = impl.createLSSerializer();
LSOutput output = impl.createLSOutput();
output.setByteStream(byteArrayOutputStrm);
writer.write(element, output);
return byteArrayOutputStrm.toString();
} catch (Exception e) {
log.error("Error Serializing the SAML Response");
throw new IdentityException("Error Serializing the SAML Response", e);
}
}
private static Issuer getIssuer() {
Issuer issuer = new IssuerBuilder().buildObject();
issuer.setValue("WSO2 Identity Server");
issuer.setFormat("urn:oasis:names:tc:SAML:2.0:nameid-format:entity");
return issuer;
}
public static String encode(String authReq) {
return new String(Base64.encodeBytes(authReq.getBytes()));
}
}