org.jahia.services.pwdpolicy.PolicyEvaluator.java Source code

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Here is the source code for org.jahia.services.pwdpolicy.PolicyEvaluator.java

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/**
 * ==========================================================================================
 * =                   JAHIA'S DUAL LICENSING - IMPORTANT INFORMATION                       =
 * ==========================================================================================
 *
 *                                 http://www.jahia.com
 *
 *     Copyright (C) 2002-2017 Jahia Solutions Group SA. All rights reserved.
 *
 *     THIS FILE IS AVAILABLE UNDER TWO DIFFERENT LICENSES:
 *     1/GPL OR 2/JSEL
 *
 *     1/ GPL
 *     ==================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE GPL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     This program 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.
 *
 *     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 General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 *
 *     2/ JSEL - Commercial and Supported Versions of the program
 *     ===================================================================================
 *
 *     IF YOU DECIDE TO CHOOSE THE JSEL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS:
 *
 *     Alternatively, commercial and supported versions of the program - also known as
 *     Enterprise Distributions - must be used in accordance with the terms and conditions
 *     contained in a separate written agreement between you and Jahia Solutions Group SA.
 *
 *     If you are unsure which license is appropriate for your use,
 *     please contact the sales department at sales@jahia.com.
 */
package org.jahia.services.pwdpolicy;

import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.apache.commons.collections.FastHashMap;

/**
 * Policy rules evaluator.
 * 
 * @author Sergiy Shyrkov
 */
@SuppressWarnings("unchecked")
final class PolicyEvaluator {

    private static final Map<Character, ConditionEvaluator> EVALUATORS;

    static {
        FastHashMap evals = new FastHashMap(1);
        // currently only a single Java evaluator is supported
        evals.put(new Character(JahiaPasswordPolicyRule.EVALUATOR_JAVA), new JavaConditionEvaluator());
        evals.setFast(true);
        EVALUATORS = evals;
    }

    static PolicyEnforcementResult evaluate(JahiaPasswordPolicy policy, EvaluationContext ctx,
            boolean periodicalRulesOnly) {

        PolicyEnforcementResult result = PolicyEnforcementResult.SUCCESS;
        List<JahiaPasswordPolicyRule> violatedRules = new LinkedList<JahiaPasswordPolicyRule>();

        for (JahiaPasswordPolicyRule rule : policy.getRules()) {
            if (rule.isActive() && rule.isPeriodical() == periodicalRulesOnly) {
                if (!evaluateRule(rule, ctx)) {
                    violatedRules.add(rule);
                    // stop processing and skip other rules?
                    if (rule.isLastRule()) {
                        break;
                    }
                }
            }
        }

        if (violatedRules.size() > 0) {
            result = new PolicyEnforcementResult(violatedRules);
        }

        return result;
    }

    private static boolean evaluateRule(JahiaPasswordPolicyRule rule, EvaluationContext ctx) {

        return getEvaluator(rule.getEvaluator()).evaluate(rule, ctx);
    }

    private static ConditionEvaluator getEvaluator(char type) {
        ConditionEvaluator evaluator = (ConditionEvaluator) EVALUATORS.get(new Character(type));

        if (evaluator == null) {
            throw new UnsupportedOperationException("Not supported evaluator type '" + type + "'");
        }

        return evaluator;
    }

}