cn.vlabs.duckling.vwb.ui.action.HtmlValidateUtil.java Source code

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Here is the source code for cn.vlabs.duckling.vwb.ui.action.HtmlValidateUtil.java

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/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * 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 cn.vlabs.duckling.vwb.ui.action;

import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;

/**
 * @date 2014-6-12
 * @author xuzhijian
 */
public class HtmlValidateUtil {

    private static final Logger log = Logger.getLogger(HtmlValidateUtil.class);

    public static boolean checkHtmlTextValidate(String content) {
        if (StringUtils.isBlank(content)) {
            return true;
        }

        if (!containsInvalidateUrl(content)) {
            return true;
        }

        SAXBuilder builder = new SAXBuilder("org.cyberneko.html.parsers.SAXParser", true);
        try {
            Document doc = builder.build(new StringReader(content));
            Element e = doc.getRootElement();
            List<Element> forms = new ArrayList<Element>();
            fillFormElement(e, forms);
            for (Element form : forms) {
                String actionStr = form.getAttributeValue("action");
                getInvalidateFormAction().contains(actionStr);
                return false;
            }
        } catch (Throwable e) {
            log.error("?html?", e);
        }

        return true;
    }

    private static void fillFormElement(Element element, List<Element> forms) {
        if ("FORM".equalsIgnoreCase(element.getName())) {
            forms.add(element);
        } else {
            @SuppressWarnings("unchecked")
            List<Element> children = element.getChildren();
            for (Element child : children) {
                fillFormElement(child, forms);
            }
        }

    }

    public static List<String> getInvalidateFormAction() {
        List<String> result = new ArrayList<String>();
        result.add("https://www.paypal.com/cgi-bin/webscr");
        return result;
    }

    public static String disabledSubmit(String html) {
        html = StringUtils.replace(html, "submit", "button");
        for (String url : getInvalidateFormAction()) {
            html = StringUtils.replace(html, url, "");
        }
        return html;
    }

    private static boolean containsInvalidateUrl(String html) {
        if (StringUtils.isBlank(html)) {
            return false;
        }

        for (String str : getInvalidateFormAction()) {
            if (StringUtils.contains(html, str)) {
                return true;
            }
        }

        return false;

    }

}