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Apache Sling XSS Protection Bundle providing XSS protection based on the OWASP AntiSamy and OWASP Java Encoder libraries.

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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ~ Licensed to the Apache Software Foundation (ASF) under one
 ~ or more contributor license agreements.  See the NOTICE file
 ~ distributed with this work for additional information
 ~ regarding copyright ownership.  The ASF licenses this file
 ~ to you 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.apache.sling.xss.impl;

import java.io.IOException;
import java.io.InputStream;

import javax.xml.stream.XMLStreamException;

import org.apache.sling.xss.impl.xml.AntiSamyPolicy;
import org.apache.sling.xss.impl.xml.Tag;

public class FallbackSlingPolicy extends AntiSamyPolicy {

    public FallbackSlingPolicy(InputStream inputStream) throws InvalidConfigException, XMLStreamException, IOException {

        super(inputStream);

        Tag original = tagRules.get("a");
        if (original != null) {
            Tag wrapped = new FallbackATag(original);
            tagRules.put("a", wrapped);
        }
    }
}