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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
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 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 */
// Portions Copyright 2018-2022 Payara Foundation and/or its affiliates
// Payara Foundation and/or its affiliates elects to include this software in this distribution under the GPL Version 2 license
package org.glassfish.appclient.common;

import com.sun.enterprise.security.integration.PermsHolder;
import com.sun.enterprise.security.permissionsxml.GlobalPolicyUtil;

import java.io.IOException;
import java.net.URLClassLoader;
import java.security.CodeSource;
import java.security.PermissionCollection;

import static org.glassfish.appclient.common.PermissionsUtil.getClientDeclaredPermissions;
import static org.glassfish.appclient.common.PermissionsUtil.getClientEEPolicy;
import static org.glassfish.appclient.common.PermissionsUtil.getClientRestrictPolicy;

public class ClientClassLoaderDelegate {

    protected static final String PERMISSIONS_XML = "META-INF/permissions.xml";

    private URLClassLoader classLoader;
    private PermsHolder permHolder;

    public ClientClassLoaderDelegate(URLClassLoader cl) {
        this.classLoader = cl;
        loadPemissions();
    }

    private void loadPemissions() {
        try {
            processDeclaredPermissions();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    private void processDeclaredPermissions() throws IOException {
        if (System.getSecurityManager() == null) {
            return;
        }

        PermissionCollection declaredPermissionCollection = getClientDeclaredPermissions(classLoader);

        PermissionCollection eePc = getClientEEPolicy(classLoader);
        PermissionCollection eeRestriction = getClientRestrictPolicy(classLoader);

        GlobalPolicyUtil.checkRestriction(eePc, eeRestriction);
        GlobalPolicyUtil.checkRestriction(declaredPermissionCollection, eeRestriction);

        permHolder = new PermsHolder(eePc, declaredPermissionCollection, eeRestriction);
    }

    public PermissionCollection getCachedPerms(CodeSource codesource) {
        return permHolder.getCachedPerms(codesource);
    }

    public PermissionCollection getPermissions(CodeSource codesource, PermissionCollection parentPC) {
        return permHolder.getPermissions(codesource, parentPC);
    }

}