de.iai.ilcd.services.AuthenticateResource.java Source code

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Here is the source code for de.iai.ilcd.services.AuthenticateResource.java

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/*******************************************************************************
 * Copyright (c) 2011 Karlsruhe Institute of Technology (KIT) - Institute for
 * Applied Computer Science (IAI).
 * 
 * This file is part of soda4LCA - the Service-Oriented Life Cycle Data Store.
 * 
 * soda4LCA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * soda4LCA is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with soda4LCA. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/

package de.iai.ilcd.services;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import javax.ws.rs.core.UriInfo;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.IncorrectCredentialsException;
import org.apache.shiro.authc.LockedAccountException;
import org.apache.shiro.authc.UnknownAccountException;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.subject.Subject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import de.fzk.iai.ilcd.service.client.impl.vo.AuthenticationInfo;
import de.iai.ilcd.model.dao.UserDao;
import de.iai.ilcd.security.IlcdSecurityRealm;
import de.iai.ilcd.security.UserAccessBean;

/**
 * REST Web Service
 * 
 * @author clemens.duepmeier
 */

@Component
@Path("authenticate")
public class AuthenticateResource {

    private static final Logger logger = LoggerFactory.getLogger(AuthenticateResource.class);

    @SuppressWarnings("unused")
    @Context
    private UriInfo context;

    /** Creates a new instance of AuthenticateResource */
    public AuthenticateResource() {
    }

    @GET
    @Path("status")
    @Produces("application/xml")
    public AuthenticationInfo status() {
        logger.info("authenticate/status");

        UserAccessBean user = new UserAccessBean();

        AuthenticationInfo authInfo = new AuthenticationInfo();

        boolean authenticated = user.isLoggedIn();

        authInfo.setAuthenticated(authenticated);
        logger.info("user authenticated: " + authenticated);

        if (!authenticated) {
            return authInfo;
        }

        authInfo.setUserName(user.getUserName());
        logger.info("username: " + authInfo.getUserName());

        return authInfo;
    }

    /**
     * Retrieves representation of an instance of de.iai.ilcd.services.AuthenticateResource
     * 
     * @return an instance of java.lang.String
     */
    @GET
    @Path("login")
    @Produces("text/plain")
    public String login(@QueryParam("userName") String userName, @QueryParam("password") String password) {
        // TODO return proper representation object
        logger.info("authenticate/login");
        Subject currentUser = SecurityUtils.getSubject();
        if (!currentUser.isAuthenticated()) {
            // no user currently logged in
            if (userName == null || password == null) {
                Response.status(Status.UNAUTHORIZED);
                return "user name and password must have a value";
            }

            UserDao dao = new UserDao();
            String salt = dao.getSalt(userName);
            if (salt == null) {
                Response.status(Status.UNAUTHORIZED);
                return "incorrect password or user name";
            }

            UsernamePasswordToken token = new UsernamePasswordToken(userName,
                    IlcdSecurityRealm.getEncryptedPassword(password, salt));
            // token.setRememberMe(true);
            try {
                currentUser.login(token);

                return "Login successful";
                // message.setSummary("Your login was successful");
            } catch (UnknownAccountException uae) {
                Response.status(Status.UNAUTHORIZED);
                return "unknown error while verifying credentials";
            } catch (IncorrectCredentialsException ice) {
                Response.status(Status.UNAUTHORIZED);
                return "incorrect password or user name";
            } catch (LockedAccountException lae) {
                Response.status(Status.UNAUTHORIZED);
                return "account is locked; contact administrator";
            } catch (AuthenticationException au) {
                Response.status(Status.UNAUTHORIZED);
                return "incorrect password or user name";
            } catch (Exception e) {
                Response.status(Status.UNAUTHORIZED);
                return "unknown error while verifying credentials";
            }
        }
        return "You are already logged in as a user";
    }

    @GET
    @Path("logout")
    @Produces("text/plain")
    public String logout() {
        logger.info("authenticate/logout");
        Subject currentUser = SecurityUtils.getSubject();
        if (currentUser.isAuthenticated()) {
            SecurityUtils.getSecurityManager().logout(currentUser);
            Response.status(Status.OK);
            return "successfully logged out";
        }
        // no user currently logged in
        return "currently not authenticated";
    }

}