Quadcap Embeddable Server

com/quadcap/http/server22/CookieParser.java

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package com.quadcap.http.server22;

/* Copyright 1998 - 2003 Quadcap Software.  All rights reserved.
 *
 * This software is distributed under the Quadcap Free Software License.
 * This software may be used or modified for any purpose, personal or
 * commercial.  Open Source redistributions are permitted.  Commercial
 * redistribution of larger works derived from, or works which bundle
 * this software requires a "Commercial Redistribution License"; see
 * http://www.quadcap.com/purchase.
 *
 * Redistributions qualify as "Open Source" under  one of the following terms:
 *   
 *    Redistributions are made at no charge beyond the reasonable cost of
 *    materials and delivery.
 *
 *    Redistributions are accompanied by a copy of the Source Code or by an
 *    irrevocable offer to provide a copy of the Source Code for up to three
 *    years at the cost of materials and delivery.  Such redistributions
 *    must allow further use, modification, and redistribution of the Source
 *    Code under substantially the same terms as this license.
 *
 * Redistributions of source code must retain the copyright notices as they
 * appear in each source code file, these license terms, and the
 * disclaimer/limitation of liability set forth as paragraph 6 below.
 *
 * Redistributions in binary form must reproduce this Copyright Notice,
 * these license terms, and the disclaimer/limitation of liability set
 * forth as paragraph 6 below, in the documentation and/or other materials
 * provided with the distribution.
 *
 * The Software is provided on an "AS IS" basis.  No warranty is
 * provided that the Software is free of defects, or fit for a
 * particular purpose.  
 *
 * Limitation of Liability. Quadcap Software shall not be liable
 * for any damages suffered by the Licensee or any third party resulting
 * from use of the Software.
 */

import java.io.ByteArrayInputStream;
import java.io.IOException;

import java.util.Vector;

import javax.servlet.http.Cookie;

import com.quadcap.util.text.OctetMap;
import com.quadcap.util.text.Scanner;

import com.quadcap.util.Debug;

/**
 * Parse a string containing HTTP cookies.
 *
 * @author Stan Bailes
 */
public class CookieParser {
    Scanner                     s       = null;

    public CookieParser(String cookieHdr) {
        if (cookieHdr == null) cookieHdr = "";
        ByteArrayInputStream bis =
            new ByteArrayInputStream(cookieHdr.getBytes());
        s = new Scanner(bis);
    }

    Cookie[] parseCookies() throws IOException {
        Vector cookieVec = new Vector();
        Cookie cookie = null;
        s.skipWhile(OctetMap.wsChars);
        while (OctetMap.tokenChars.has(s.peek())) {
            String name = s.parseWhile(OctetMap.tokenChars);
            String val = null;
            if (s.peek() == '=') {
                s.matchChar('=');
                if (s.peek() == '"') {
                    s.matchChar('"');
                    val = s.parseUntil(OctetMap.dquoteChar);
                    s.matchChar('"');
                } else {
                    val = s.parseWhile(OctetMap.tokenChars);
                }
            }
            s.skipWhile(OctetMap.wsChars);
            if (s.peek() == ';') {
                s.matchChar(';');
                s.skipWhile(OctetMap.wsChars);
            }

            if (name.charAt(0) == '$' && cookie != null) {
                if (name.equals("$Path")) {
                    cookie.setPath(val);
                } else if (name.equals("$Domain")) {
                    cookie.setDomain(val);
                }
            } else {
                //#ifdef DEBUG
                if (Trace.level() > 2) {
                    Debug.println("Cookie: " + name + " = " + val);
                }
                //#endif
                cookie = new Cookie(name, val);
                cookieVec.addElement(cookie);
            }
        }
        Cookie[] cookies = new Cookie[cookieVec.size()];
        for (int i = 0; i < cookies.length; i++) {
            cookies[i] = (Cookie)cookieVec.elementAt(i);
        }
        return cookies;
    }
}