AuthUtil.java

/*
 * Copyright 1998-2016 Linux.org.ru
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package ru.org.linux.auth;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import ru.org.linux.user.Profile;
import ru.org.linux.user.User;
import ru.org.linux.user.UserDao;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class AuthUtil {
  public static void updateLastLogin(Authentication authentication, UserDao userDao) {
    if (authentication != null && (authentication.isAuthenticated())) {
      Object principal = authentication.getPrincipal();
      if (principal instanceof UserDetailsImpl) {
        UserDetailsImpl userDetails = (UserDetailsImpl) principal;
        User user = userDetails.getUser();
        userDao.updateLastlogin(user, true);
      }
    }
  }

  public static boolean isSessionAuthorized() {
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    return authentication != null && (authentication.isAuthenticated() && !hasAuthority("ROLE_SYSTEM_ANONYMOUS") && hasAuthority("ROLE_ANONYMOUS"));
  }

  public static boolean isModeratorSession() {
    return isSessionAuthorized() && hasAuthority("ROLE_MODERATOR");
  }

  public static boolean isCorrectorSession() {
    return isSessionAuthorized() && hasAuthority("ROLE_CORRECTOR");
  }

  private static boolean hasAuthority(String authName) {
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    if (authentication == null) {
      return false;
    }

    for (GrantedAuthority auth : authentication.getAuthorities()) {
      if (auth.getAuthority().equals(authName)) {
        return true;
      }
    }
    return false;
  }

  /**
   * Get current authorized users nick
   *
   * @return nick or null if not authorized
   */
  public static String getNick() {
    if (!isSessionAuthorized()) {
      return null;
    }
    return getCurrentUser().getNick();
  }

  @Nullable
  public static User getCurrentUser() {
    if (!isSessionAuthorized()) {
      return null;
    }

    Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
    if (principal instanceof UserDetailsImpl) {
      return ((UserDetailsImpl) principal).getUser();
    } else {
      return null;
    }
  }

  @Nonnull
  public static Profile getProfile() {
    if (!isSessionAuthorized()) {
      return Profile.createDefault();
    }

    Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
    if (principal instanceof UserDetailsImpl) {
      return ((UserDetailsImpl) principal).getProfile();
    } else {
      return Profile.createDefault();
    }
  }
}