org.celstec.arlearn2.gwtcommonlib.client.auth.OauthClient.java Source code

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Here is the source code for org.celstec.arlearn2.gwtcommonlib.client.auth.OauthClient.java

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/*******************************************************************************
 * Copyright (C) 2013 Open Universiteit Nederland
 * 
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This library 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors: Stefaan Ternier
 ******************************************************************************/
package org.celstec.arlearn2.gwtcommonlib.client.auth;

import java.util.Date;

import org.celstec.arlearn2.jdo.classes.AccountJDO;

import com.google.gwt.user.client.Cookies;
import com.google.gwt.user.client.Window;

public class OauthClient {

    public final static int FBCLIENT = 1;
    public final static int GOOGLECLIENT = 2;
    public final static int LINKEDINCLIENT = 3;
    public final static int WESPOTCLIENT = 5;
    public final static int ECOCLIENT = 6;
    private String accessToken;
    private int type;

    private static OauthClient oauthInstance;

    public final static String COOKIE_TOKEN_NAME = "arlearn.AccessToken";
    public final static String COOKIE_OAUTH_TYPE = "arlearn.OauthType";

    public String getAccessToken() {
        return accessToken;
    }

    public static OauthClient checkAuthentication() {
        if (oauthInstance != null)
            return oauthInstance;
        if (Window.Location.getParameter("accessToken") != null) {
            oauthInstance = readFromUrl();
        } else if (Cookies.getCookie(COOKIE_TOKEN_NAME) != null) {
            oauthInstance = readFromCookie();
        }
        return oauthInstance;
    }

    public static void disAuthenticate() {
        oauthInstance = null;
        Cookies.removeCookie(COOKIE_TOKEN_NAME);
        Cookies.removeCookie(COOKIE_OAUTH_TYPE);
    }

    public static OauthClient readFromCookie() {
        String accessToken = Cookies.getCookie(COOKIE_TOKEN_NAME);
        String typeString = Cookies.getCookie(COOKIE_OAUTH_TYPE);

        if (typeString == null || accessToken == null) {
            Cookies.removeCookie(COOKIE_TOKEN_NAME);
            Cookies.removeCookie(COOKIE_OAUTH_TYPE);
            return null;
        }
        Integer type = Integer.parseInt(typeString);
        OauthClient client = null;
        switch (type) {
        case AccountJDO.FBCLIENT:
            client = new OauthFbClient();
            break;
        case AccountJDO.GOOGLECLIENT:
            client = new OauthGoogleClient();
            break;
        case AccountJDO.LINKEDINCLIENT:
            client = new OauthLinkedIn();
            break;
        case AccountJDO.ECOCLIENT:
            client = new OauthECO();
            break;
        default:
            break;
        }
        client.accessToken = accessToken;
        return client;

    }

    private static OauthClient readFromUrl() {
        String accessToken = null;
        int type = 0;
        int exp = 0;
        if (Window.Location.getParameter("accessToken") != null) {
            accessToken = Window.Location.getParameter("accessToken");
        }
        if (Window.Location.getParameter("type") != null) {
            type = Integer.parseInt(Window.Location.getParameter("type"));
        }

        if (Window.Location.getParameter("exp") != null) {
            exp = Integer.parseInt(Window.Location.getParameter("exp"));
        }
        OauthClient client = null;
        switch (type) {
        case AccountJDO.FBCLIENT:
            client = new OauthFbClient();
            break;
        case AccountJDO.GOOGLECLIENT:
            client = new OauthGoogleClient();
            break;
        case AccountJDO.LINKEDINCLIENT:
            client = new OauthLinkedIn();
            break;
        case AccountJDO.ECOCLIENT:
            client = new OauthECO();
            break;
        default:
            break;
        }

        client.accessToken = accessToken;
        long expires = System.currentTimeMillis() + (exp * 1000);
        Date d = new Date(expires);
        System.out.println("expires at" + d);

        Cookies.setCookie(COOKIE_TOKEN_NAME, accessToken, d);
        Cookies.setCookie(COOKIE_OAUTH_TYPE, type + "");
        return client;
    }

}