// Cookie - an HTTP cookie
//
// API based on documentation from JavaSoft.
//
// Copyright (C) 1996,1998 by Jef Poskanzer <jef@acme.com>. 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.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
// SUCH DAMAGE.
//
// Visit the ACME Labs Java page for up-to-date versions of this and other
// fine Java utilities: http://www.acme.com/java/

package Acme.Serve.servlet.http;

import java.io.*;
import Acme.Serve.servlet.*;

/// An HTTP cookie.
// <P>
// This is taken from JavaSoft's Servlet API documentation.
// <P>
// <A HREF="/resources/classes/Acme/Serve/servlet/http/Cookie.java">Fetch the software.</A><BR>
// <A HREF="/resources/classes/Acme.tar.gz">Fetch the entire Acme package.</A>

public class Cookie extends Object implements Cloneable
    {

    private String name;
    private String value;
    private String comment = null;
    private String domain = null;
    private int maxAge = -1;
    private String path = null;
    private boolean secure = false;
    private int version = 0;

    /// Defines a cookie with an initial name and value.
    public Cookie( String name, String value )
	{
	this.name = name;
	this.value = value;
	}

    /// If a user agent (web browser) presents this cookie to a user, the
    // cookie's purpose will be described using this comment. 
    public void setComment( String comment )
	{
	this.comment = comment;
	}

    /// Returns the comment describing the purpose of this cookie, or null if
    // no such comment has been defined.
    public String getComment()
	{
	return comment;
	}

    /// This cookie should be presented only to hosts satisfying this domain
    // name pattern.
    public void setDomain( String domain )
	{
	this.domain = domain;
	}

    /// Returns the domain of the cookie.
    public String getDomain()
	{
	return domain;
	}

    /// Sets the maximum age of the cookie.
    public void setMaxAge( int maxAge )
	{
	this.maxAge = maxAge;
	}

    /// Returns the maximum specified age of the cookie.
    public int getMaxAge()
	{
	return maxAge;
	}

    /// This cookie should be presented only with requests beginning with
    // this URL.  Read RFC 2109 for a specification of the default behaviour.
    // Basically, URLs in the same "directory" as the one which set the
    // cookie, and in subdirectories, can all see the cookie unless a
    // different path is set. 
    public void setPath( String path )
	{
	this.path = path;
	}

    /// Returns the prefix of all URLs for which this cookie is targetted.
    public String getPath()
	{
	return path;
	}

    /// Indicates to the user agent that the cookie should only be sent using
    // a secure protocol (https).
    public void setSecure( boolean secure )
	{
	this.secure = secure;
	}

    /// Returns the value of the 'secure' flag.
    public boolean getSecure()
	{
	return secure;
	}

    /// Returns the name of the cookie.
    public String getName()
	{
	return name;
	}

    /// Sets the value of the cookie. BASE64 encoding is suggested for use
    // with binary values.
    public void setValue( String value )
	{
	this.value = value;
	}

    /// Returns the value of the cookie.
    public String getValue()
	{
	return value;
	}

    /// Sets the version of the cookie protocol used when this cookie saves
    // itself.  Since the IETF standards are still being finalized, consider
    // version 1 as experimental; do not use it (yet) on production sites. 
    public void setVersion( int vesion )
	{
	this.version = version;
	}

    /// Returns the version of the cookie.  Version 1 complies with RFC 2109,
    // version 0 indicates the original version, as specified by Netscape.
    // Newly constructed cookies use version 0 by default, to maximize
    // interoperability.  Cookies provided by a user agent will identify
    // the cookie version used by the browser. 
    public int getVersion()
	{
	return version;
	}

    /// Copies the cookie.
    public Object clone()
	{
	try
	    {
	    return super.clone();
	    }
	catch ( CloneNotSupportedException e )
	    {
	    // Shouldn't happen.
	    throw new InternalError( e.toString() );
	    }
	}

    }