org.drftpd.util.HttpUtils.java Source code

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Here is the source code for org.drftpd.util.HttpUtils.java

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/*
 * This file is part of DrFTPD, Distributed FTP Daemon.
 *
 * DrFTPD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * DrFTPD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with DrFTPD; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package org.drftpd.util;

import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpException;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.text.Normalizer;

/**
 * @author scitz0
 */
public class HttpUtils {
    public static final String _userAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:40.0) Gecko/20100101 Firefox/40.0";

    public static String retrieveHttpAsString(String url) throws HttpException, IOException {
        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000)
                .setConnectionRequestTimeout(5000).setCookieSpec(CookieSpecs.IGNORE_COOKIES).build();
        CloseableHttpClient httpclient = HttpClients.custom().setDefaultRequestConfig(requestConfig)
                .setUserAgent(_userAgent).build();
        HttpGet httpGet = new HttpGet(url);
        httpGet.setConfig(requestConfig);
        CloseableHttpResponse response = null;
        try {
            response = httpclient.execute(httpGet);
            final int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode != HttpStatus.SC_OK) {
                throw new HttpException("Error " + statusCode + " for URL " + url);
            }
            HttpEntity entity = response.getEntity();
            String data = EntityUtils.toString(entity);
            EntityUtils.consume(entity);
            return data;
        } catch (IOException e) {
            throw new IOException("Error for URL " + url, e);
        } finally {
            if (response != null) {
                response.close();
            }
            httpclient.close();
        }
    }

    public static String htmlToString(String input) {
        String str = input.replaceAll("\n", "");
        str = StringEscapeUtils.unescapeHtml4(str);
        str = Normalizer.normalize(str, Normalizer.Form.NFD);
        str = str.replaceAll("\\P{InBasic_Latin}", "");
        while (str.contains("<")) {
            int startPos = str.indexOf("<");
            int endPos = str.indexOf(">", startPos);
            if (endPos > startPos) {
                String beforeTag = str.substring(0, startPos);
                String afterTag = str.substring(endPos + 1);
                str = beforeTag + afterTag;
            }
        }
        return str;
    }
}