mitm.common.net.NetUtils.java Source code

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Here is the source code for mitm.common.net.NetUtils.java

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/*
 * Copyright (c) 2010-2011, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public 
 * License along with Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
 * Spice Software License, Common Development and Distribution License
 * (CDDL), Common Public License (CPL) the licensors of this Program grant 
 * you additional permission to convey the resulting work.
 */
package mitm.common.net;

import java.io.IOException;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Map;

import mitm.common.locale.CharacterEncoding;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;

public class NetUtils {
    /**
     * The default HTTP user agent
     */
    public static final String HTTP_USER_AGENT = "Mozilla/4.0 (compatible; Djigzo email encryption; www.djigzo.com)";

    /**
     * Parses the provided URL query and returns a map with all names to values. The values are URL decoded.  
     * The keys of the map will be converted to lowecase.
     * 
     * Example:
     * test=123&value=%27test%27&value=abc maps to test -> [123] and value -> ["test", abc]
     * @throws IOException 
     */
    public static Map<String, String[]> parseQuery(String query) throws IOException {
        return parseQuery(query, true);
    }

    /**
     * Parses the provided URL query and returns a map with all names to values. The values are URL decoded. If 
     * toLowercase is true the keys of the map will be converted to lowecase.
     * 
     * Example:
     * test=123&value=%27test%27&value=abc maps to test -> [123] and value -> ["test", abc]
     * @throws IOException 
     */
    public static Map<String, String[]> parseQuery(String query, boolean toLowercase) throws IOException {
        Map<String, String[]> map = new HashMap<String, String[]>();

        if (query == null) {
            return map;
        }

        String[] elements = StringUtils.split(query, '&');

        for (String element : elements) {
            element = element.trim();

            if (StringUtils.isEmpty(element)) {
                continue;
            }

            String name;
            String value;

            int i = element.indexOf('=');

            if (i > -1) {
                name = StringUtils.substring(element, 0, i);
                value = StringUtils.substring(element, i + 1);
            } else {
                name = element;
                value = "";
            }

            name = StringUtils.trimToEmpty(name);
            value = StringUtils.trimToEmpty(value);

            if (toLowercase) {
                name = name.toLowerCase();
            }

            value = URLDecoder.decode(value, CharacterEncoding.UTF_8);

            String[] updated = (String[]) ArrayUtils.add(map.get(name), value);

            map.put(name, updated);
        }

        return map;
    }
}