FlatPermissions.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2022 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * 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 org.turro.security;
 
import java.util.List;
import java.util.TreeMap;
import java.util.TreeSet;
import org.turro.actor.Actors;
import org.turro.elephant.context.Application;
import org.turro.plugin.contacts.IContact;
import org.turro.reflection.Reflections;
 
public class FlatPermissions extends TreeMap<String, TreeSet<String>> {
  
  public boolean isInRole(String role) {
    String[] roles = role.split("\\s*\\|\\s*");
    for(String r : roles) {
      if(checkRole(r)) return true;
    }
    return false;
  }
  
  public boolean anyKeyMatch(List<String> roles) {
    return roles.stream().anyMatch(role -> containsKey(role));
  }
  
  public PermissionMap asMap() {
    return new PermissionMap(this);
  }
  
  public void addPermissions(TreeMap<String, TreeSet<String>> rolePermissions) {
    rolePermissions.entrySet().forEach(entry -> {
      TreeSet<String> set = get(entry.getKey());
      if(set == null) set = new TreeSet<>();
      set.addAll(entry.getValue());
      put(entry.getKey(), set);
    });
  }
 
  protected boolean isActor(IContact contact, String actor) {
    if(contact == null) contact = (IContact) Application.getUser();
    return Actors.isActor(contact, actor);
  }
  
  private boolean checkRole(String role) {
    String[] value = role.split("\\s*:\\s*");
    if(value.length == 2) {
      if(role.startsWith("class:")) {
        return Reflections.exist(role.substring(6));
      } else if("@actor".equals(value[0])) {
        return isActor(null, value[1]);
      } else if(containsKey(value[0])) {
        return get(value[0]).contains(value[1]);
      }
    }
    return false;
  }
 
}