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package edu.kit.scc.dei.ecplean;
import java.io.IOException;
import java.net.URI;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathException;
import org.apache.http.impl.client.DefaultHttpClient;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;
public class ECPIdPAuth extends ECPAuthenticatorBase {
public ECPIdPAuth(String username, String password,
URI idpEcpEndpoint) {
this(new DefaultHttpClient(), username, password, idpEcpEndpoint);
}
public ECPIdPAuth(DefaultHttpClient client, String username, String password,
URI idpEcpEndpoint) {
super(client);
authInfo = new ECPAuthenticationInfo(username, password, idpEcpEndpoint, null);
authInfo.setAuthState(ECPAuthState.NOT_STARTED);
}
public String authenticate(String paosMessage) throws ECPAuthenticationException {
Document initResponse;
try {
initResponse = buildDocumentFromString(paosMessage);
} catch (IOException e) {
logger.debug("Parsing SP Request failed");
throw new ECPAuthenticationException(e);
} catch (ParserConfigurationException e) {
logger.debug("Parsing SP Request failed");
throw new ECPAuthenticationException(e);
} catch (SAXException e) {
logger.debug("Parsing SP Request failed");
throw new ECPAuthenticationException(e);
}
String relayState;
try {
relayState = (String) queryDocument(initResponse, "//ecp:RelayState", XPathConstants.STRING);
} catch (XPathException e) {
logger.debug("Could not find relay state in PAOS answer from SP");
throw new ECPAuthenticationException(e);
}
logger.info("Got relayState: " + relayState);
String responseConsumerUrl;
try {
responseConsumerUrl = (String) queryDocument(initResponse, "/S:Envelope/S:Header/paos:Request/@responseConsumerURL", XPathConstants.STRING);
} catch (XPathException e) {
logger.debug("Could not find response consumer url in PAOS answer from SP");
throw new ECPAuthenticationException(e);
}
logger.info("Got responseConsumerUrl: " + responseConsumerUrl);
Node firstChild = initResponse.getDocumentElement().getFirstChild();
initResponse.getDocumentElement().removeChild(firstChild);
Document idpResponse = authenticateIdP(initResponse);
idpResponse.getDocumentElement().getFirstChild().getFirstChild().setTextContent(relayState);
try {
return documentToString(idpResponse);
} catch (TransformerConfigurationException e) {
logger.debug("documentToString failed");
throw new ECPAuthenticationException(e);
} catch (TransformerException e) {
logger.debug("documentToString failed");
throw new ECPAuthenticationException(e);
}
}
}
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