org.dicen.recolnat.services.configuration.Authentication.java Source code

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Here is the source code for org.dicen.recolnat.services.configuration.Authentication.java

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package org.dicen.recolnat.services.configuration;

import fr.recolnat.authentication.CASAuthentication;
import java.io.IOException;
import java.net.ConnectException;
import java.util.Map;
import javax.websocket.CloseReason;
import javax.websocket.EndpointConfig;
import org.apache.commons.lang.NotImplementedException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Static methods for authenticating a user into the application. Currently supports only CAS authentication.
 * @author dmitri
 */
public class Authentication {

    private static final Logger log = LoggerFactory.getLogger(Authentication.class);
    /**
     * 0 = not configured 1 = direct 2 = CAS
     */
    public static int authenticationMethod = 0;

    public static class CASConfiguration {

        public static String ticketUrl = "";
        public static String serviceValidateUrl = "";
    }

    public static String authenticate(EndpointConfig conf) {
        switch (Authentication.authenticationMethod) {
        case 0:
            log.error("Authentication not configured");
            return null;
        case 1:
            throw new NotImplementedException();
        case 2:
            return Authentication.authenticateWithCAS(conf.getUserProperties());
        default:
            log.error("Authentication method unknown " + authenticationMethod);
            return null;
        }
    }

    public static String authenticateWithCAS(Map<String, Object> userProps) {
        String tgt = (String) userProps.get("CASTGC");
        if (log.isDebugEnabled()) {
            log.debug("Got TGT=" + tgt);
        }
        try {
            return CASAuthentication.getCASUserLogin(tgt, CASConfiguration.ticketUrl,
                    CASConfiguration.serviceValidateUrl);
        } catch (ConnectException ex) {
            if (log.isWarnEnabled()) {
                log.warn("Connection exception to CAS");
            }
            if (log.isDebugEnabled()) {
                log.debug("Exception details.", ex);
            }
            return null;
        } catch (IOException ex) {
            if (log.isWarnEnabled()) {
                log.warn("I/O exception reading CAS response", ex);
            }
            return null;
        }
    }
}