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/*
 * =============================================================================
 * 
 *   Copyright (c) 2011-2016, The THYMELEAF team (http://www.thymeleaf.org)
 * 
 *   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 org.thymeleaf.extras.springsecurity4.auth;

import java.util.List;

import javax.servlet.ServletContext;

import org.springframework.context.ApplicationContext;
import org.springframework.security.acls.model.Permission;
import org.springframework.security.core.Authentication;
import org.thymeleaf.util.Validate;


/**
 * 
 * @author Daniel Fernández
 * @since 2.0.1
 *
 */
public final class AclAuthorization {


    private final Authentication authentication;
    private final ServletContext servletContext;




    public AclAuthorization(
            final Authentication authentication,
            final ServletContext servletContext) {
        
        super();

        this.authentication = authentication;
        this.servletContext = servletContext;
        
    }


    public Authentication getAuthentication() {
        return this.authentication;
    }


    public ServletContext getServletContext() {
        return this.servletContext;
    }



    public boolean acl(final Object domainObject, final String permissions) {
        
        Validate.notEmpty(permissions, "permissions cannot be null or empty");

        final ApplicationContext applicationContext = AuthUtils.getContext(this.servletContext);
        
        final List permissionsList =
                AclAuthUtils.parsePermissionsString(applicationContext, permissions);
        
        return AclAuthUtils.authorizeUsingAccessControlList(
                domainObject, permissionsList, this.authentication, this.servletContext);
        
    }

    
}