de.mpg.imeji.presentation.util.LoginHelper.java Source code

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Here is the source code for de.mpg.imeji.presentation.util.LoginHelper.java

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/**
 * License: src/main/resources/license/escidoc.license
 */
package de.mpg.imeji.presentation.util;

import java.util.StringTokenizer;

import javax.servlet.http.HttpServletResponse;
import javax.xml.rpc.ServiceException;

import org.apache.axis.encoding.Base64;
import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.cookie.CookieSpec;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.log4j.Logger;

import de.mpg.imeji.presentation.beans.SessionBean;

public class LoginHelper {
    private static SessionBean sessionBean = null;
    private static Logger logger = Logger.getLogger(LoginHelper.class);

    /**
     * Get handle of System administrator of eSciDoc instance.
     * 
     * @return
     */
    //    public static String loginSystemAdmin()
    //    {
    //        String handle = null;
    //        try
    //        {
    //            handle = login(PropertyReader.getProperty("framework.admin.username"),
    //                    PropertyReader.getProperty("framework.admin.password"));
    //        }
    //        catch (Exception e)
    //        {
    //            sessionBean = (SessionBean)BeanHelper.getSessionBean(SessionBean.class);
    //            BeanHelper
    //                    .info(sessionBean.getLabel("error") + ", wrong administrator user. Check config file or FW: " + e);
    //            logger.error("Error escidoc admin login", e);
    //        }
    //        return handle;
    //    }

    public static String login(String userName, String password) throws Exception {
        String frameworkUrl = PropertyReader.getProperty("escidoc.framework_access.framework.url");
        StringTokenizer tokens = new StringTokenizer(frameworkUrl, "//");
        tokens.nextToken();
        StringTokenizer hostPort = new StringTokenizer(tokens.nextToken(), ":");
        String host = hostPort.nextToken();
        int port = 80;
        if (hostPort.hasMoreTokens()) {
            port = Integer.parseInt(hostPort.nextToken());
        }
        HttpClient client = new HttpClient();
        client.getHttpConnectionManager().closeIdleConnections(1000);
        client.getHostConfiguration().setHost(host, port, "http");
        client.getParams().setCookiePolicy(CookiePolicy.BROWSER_COMPATIBILITY);
        PostMethod login = new PostMethod(frameworkUrl + "/aa/j_spring_security_check");
        login.addParameter("j_username", userName);
        login.addParameter("j_password", password);
        try {
            client.executeMethod(login);
        } catch (Exception e) {
            throw new RuntimeException("Error login in " + frameworkUrl + "  status: " + login.getStatusCode()
                    + " - " + login.getStatusText());
        }
        login.releaseConnection();
        CookieSpec cookiespec = CookiePolicy.getDefaultSpec();
        Cookie[] logoncookies = cookiespec.match(host, port, "/", false, client.getState().getCookies());
        Cookie sessionCookie = logoncookies[0];
        PostMethod postMethod = new PostMethod("/aa/login");
        postMethod.addParameter("target", frameworkUrl);
        client.getState().addCookie(sessionCookie);
        client.executeMethod(postMethod);
        if (HttpServletResponse.SC_SEE_OTHER != postMethod.getStatusCode()) {
            throw new HttpException("Wrong status code: " + postMethod.getStatusCode());
        }
        String userHandle = null;
        Header headers[] = postMethod.getResponseHeaders();
        for (int i = 0; i < headers.length; ++i) {
            if ("Location".equals(headers[i].getName())) {
                String location = headers[i].getValue();
                int index = location.indexOf('=');
                userHandle = new String(Base64.decode(location.substring(index + 1, location.length())));
            }
        }
        if (userHandle == null) {
            throw new ServiceException("User not logged in.");
        }
        return userHandle;
    }
}