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/*
 * $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/cookie/CookiePolicy.java,v 1.7.2.1 2003/10/11 19:44:27 olegk Exp $
 * $Revision: 1.7.2.1 $
 * $Date: 2003/10/11 19:44:27 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2002-2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    the documentation and/or other materials provided with the
 *    distribution.
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 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */

package org.apache.commons.httpclient.cookie;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Cookie management policy class. The cookie policy provides corresponding
 * cookie management interfrace for a given type or version of cookie. 
 * 

RFC 2109 specification is used per default. Other supported specification * can be chosen when appropriate or set default when desired *

The following specifications are provided: *

*

Default policy can be set on JVM start-up through the system property * "apache.commons.httpclient.cookiespec". Recognized values: * COMPATIBILITY, NETSCAPE_DRAFT, RFC2109. * * @author Oleg Kalnichevski * @author Mike Bowler * * @since 2.0 */ public abstract class CookiePolicy { /** cookiespec system property. */ private static final String SYSTEM_PROPERTY = "apache.commons.httpclient.cookiespec"; /** * The COMPATIBILITY policy provides high compatibilty * with common cookie management of popular HTTP agents. */ public static final int COMPATIBILITY = 0; /** The NETSCAPE_DRAFT Netscape draft compliant policy. */ public static final int NETSCAPE_DRAFT = 1; /** The RFC2109 RFC 2109 compliant policy. */ public static final int RFC2109 = 2; /** The default cookie policy. */ private static int defaultPolicy = RFC2109; /** Log object. */ protected static final Log LOG = LogFactory.getLog(CookiePolicy.class); static { String s = null; try { s = System.getProperty(SYSTEM_PROPERTY); } catch (SecurityException e) { } if ("COMPATIBILITY".equalsIgnoreCase(s)) { setDefaultPolicy(COMPATIBILITY); } else if ("NETSCAPE_DRAFT".equalsIgnoreCase(s)) { setDefaultPolicy(NETSCAPE_DRAFT); } else if ("RFC2109".equalsIgnoreCase(s)) { setDefaultPolicy(RFC2109); } else { if (s != null) { LOG.warn("Unrecognized cookiespec property '" + s + "' - using default"); } setDefaultPolicy(defaultPolicy); } } /** * @return default cookie policy * (COMPATIBILITY | NETSCAPE_DRAFT | RFC2109) */ public static int getDefaultPolicy() { return defaultPolicy; } /** * @param policy new default cookie policy * (COMPATIBILITY | NETSCAPE_DRAFT | RFC2109) */ public static void setDefaultPolicy(int policy) { defaultPolicy = policy; } /** * @param policy cookie policy to get the CookieSpec for * @return cookie specification interface for the given policy * (COMPATIBILITY | NETSCAPE_DRAFT | RFC2109) */ public static CookieSpec getSpecByPolicy(int policy) { switch(policy) { case COMPATIBILITY: return new CookieSpecBase(); case NETSCAPE_DRAFT: return new NetscapeDraftSpec(); case RFC2109: return new RFC2109Spec(); default: return getSpecByPolicy(defaultPolicy); } } /** * @return default cookie specification interface */ public static CookieSpec getDefaultSpec() { return getSpecByPolicy(defaultPolicy); } /** * Gets the CookieSpec for a particular cookie version. * *

Supported versions: *

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