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path: root/juick-server-web/src/main/java/com/juick/service/security/deprecated/CookieSimpleHashRememberMeServices.java
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/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.juick.service.security.deprecated;

import com.juick.User;
import com.juick.server.util.HashUtils;
import com.juick.service.security.entities.JuickUser;
import com.juick.service.UserService;
import com.juick.service.security.NullUserDetailsService;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.env.Environment;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.web.authentication.RememberMeServices;
import org.springframework.security.web.authentication.rememberme.AbstractRememberMeServices;
import org.springframework.security.web.authentication.rememberme.InvalidCookieException;
import org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationException;
import org.springframework.util.Assert;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Optional;

/**
 * Created by aalexeev on 11/28/16.
 *
 * @deprecated not recommended use for secure reasons
 */
@Deprecated
public class CookieSimpleHashRememberMeServices extends AbstractRememberMeServices implements RememberMeServices {
    private static final Logger logger = LoggerFactory.getLogger(CookieSimpleHashRememberMeServices.class);

    private static final String COOKIE_PARAM_NAME = "hash";

    private final UserService userService;

    public CookieSimpleHashRememberMeServices(
            final String key, final UserService userService, final Environment environment) {
        super(key, new NullUserDetailsService());

        Assert.notNull(userService);
        Assert.notNull(environment);

        this.userService = userService;

        setCookieName(COOKIE_PARAM_NAME);
        setCookieDomain(environment.getProperty("web_domain", "juick.com"));
        setAlwaysRemember(true);
    }

    @Override
    public void logout(HttpServletRequest request, HttpServletResponse response, Authentication authentication) {
        super.logout(request, response, authentication);
        userService.deleteLoginForUser(authentication.getName());
    }

    @Override
    protected void onLoginSuccess(
            HttpServletRequest request, HttpServletResponse response, Authentication successfulAuthentication) {
        String username = successfulAuthentication.getName();

        logger.debug("Creating new persistent login for user {}", username);

        try {
            int uid = userService.getUIDbyName(username);

            Assert.isTrue(uid > 0);

            String hash = HashUtils.generateHash(16);

            userService.setLoginForUser(uid, hash);

            setCookie(new String[]{hash}, getTokenValiditySeconds(), request, response);
        } catch (Exception e) {
            logger.error("Failed to save cookies", e);
        }
    }

    @Override
    protected UserDetails processAutoLoginCookie(
            String[] cookieTokens, HttpServletRequest request, HttpServletResponse response)
            throws RememberMeAuthenticationException, UsernameNotFoundException {
        String hash = cookieTokens[0];

        if (StringUtils.isBlank(hash)) {
            hash = request.getParameter("hash");
        }
        if (StringUtils.isBlank(hash)) {
            throw new InvalidCookieException("Cookie is invalid and hash parameter not found");
        }

        int uid = userService.getUIDbyHash(hash);
        if (uid <= 0)
            throw new UsernameNotFoundException("User not found by hash, cookies" + cookieTokens);

        Optional<User> userOptional = userService.getUserByUID(uid);

        Assert.isTrue(userOptional.isPresent());

        return new JuickUser(userOptional.get());
    }

    @Override
    protected String[] decodeCookie(String cookieValue) throws InvalidCookieException {
        return new String[]{cookieValue};
    }

    @Override
    protected String encodeCookie(String[] cookieTokens) {
        return cookieTokens != null && cookieTokens.length > 0 ? cookieTokens[0] : StringUtils.EMPTY;
    }
}