/*
 * Zed Attack Proxy (ZAP) and its related class files.
 *
 * ZAP is an HTTP/HTTPS proxy for assessing web application security.
 *
 * Copyright 2022 The ZAP Development Team
 *
 * 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.zaproxy.zap.extension.pscanrules;

import net.htmlparser.jericho.Element;
import net.htmlparser.jericho.HTMLElementName;
import net.htmlparser.jericho.Source;
import org.zaproxy.addon.commonlib.http.HttpFieldsNames;

/** A utility class to help dealing with Content-Security-Policy (CSP). */
public class CspUtils {

    private CspUtils() {}

    protected static boolean hasMetaCsp(Source source) {
        for (Element metaElement : source.getAllElements(HTMLElementName.META)) {
            String httpEquiv = metaElement.getAttributeValue("http-equiv");
            if (HttpFieldsNames.CONTENT_SECURITY_POLICY.equalsIgnoreCase(httpEquiv)) {
                return true;
            }
        }
        return false;
    }
}
