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<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!DOCTYPE document [
<!ENTITY project SYSTEM "project.xml">
]>
<document url="cookie-processor.html">
&project;
<properties>
<title>The Cookie Processor Component</title>
</properties>
<body>
<section name="Table of Contents">
<toc />
</section>
<section name="Introduction">
<p>The <strong>CookieProcessor</strong> element represents the component that
parses received cookie headers into <code>jakarta.servlet.http.Cookie</code>
objects accessible through <code>HttpServletRequest.getCookies()</code> and
converts <code>jakarta.servlet.http.Cookie</code> objects added to the response
through <code>HttpServletResponse.addCookie()</code> to the HTTP headers
returned to the client.</p>
<p>A CookieProcessor element MAY be nested inside a
<a href="context.html">Context</a> component. If it is not included, a default
implementation will be created automatically.</p>
</section>
<section name="Attributes">
<subsection name="Common Attributes">
<p>All implementations of <strong>CookieProcessor</strong> support the
following attributes:</p>
<attributes>
<attribute name="className" required="false">
<p>Java class name of the implementation to use. This class must
implement the <code>org.apache.tomcat.util.http.CookieProcessor</code>
interface. If not specified, the standard value (defined below) will be
used.</p>
</attribute>
</attributes>
</subsection>
<subsection name="Standard Implementation">
<p>The standard implementation of <strong>CookieProcessor</strong> is
<code>org.apache.tomcat.util.http.Rfc6265CookieProcessor</code>.</p>
<p>This cookie processor is based on RFC6265 with the following changes to
support better interoperability:</p>
<ul>
<li>Values 0x80 to 0xFF are permitted in cookie-octet to support the use
of UTF-8 in cookie values as used by HTML 5.</li>
<li>For cookies without a value, the '=' is not required after the name as
some browsers do not sent it.</li>
</ul>
<p>The RFC 6265 cookie processor is generally more lenient than the legacy
cookie parser. In particular:</p>
<ul>
<li>The '<code>=</code>' and '<code>/</code>' characters are always
permitted in a cookie value.</li>
<li>Name only cookies are always permitted.</li>
<li>The cookie header is always preserved.</li>
</ul>
<p>The <strong>RFC 6265 Cookie Processor</strong> supports the following
additional attributes.</p>
<attributes>
<attribute name="cookiesWithoutEquals" required="false">
<p>Determines how a cookie received from a user agent should be
interpreted when the name value pair does not contain an equals sign.
The default value is <code>name</code> which means that the cookie will
be treated as a cookie with a name but no value. The other option is
<code>ignore</code> which means the cookie will be ignored. From Tomcat
12 onwards the default will be <code>ignore</code>.</p>
</attribute>
<attribute name="partitioned" required="false">
<p>Should the Partitioned flag be set on cookies? Defaults to <code>false</code>.</p>
<p>Note: The name of the attribute used to indicate a partitioned cookie as part of
<a href="https://developers.google.com/privacy-sandbox/3pcd#partitioned">CHIPS</a> is not defined by an RFC and
may change in a non-backwards compatible way once equivalent functionality is included in an RFC.</p>
</attribute>
<attribute name="sameSiteCookies" required="false">
<p>Enables setting same-site cookie attribute.</p>
<p>If value is <code>unset</code> then the same-site cookie attribute
won't be set. This is the default value.</p>
<p>If value is <code>none</code> then the same-site cookie attribute
will be set and the cookie will always be sent in cross-site requests.</p>
<p>If value is <code>lax</code> then the browser only sends the cookie
in same-site requests and cross-site top level GET requests.</p>
<p>If value is <code>strict</code> then the browser prevents sending the
cookie in any cross-site request.</p>
</attribute>
</attributes>
</subsection>
</section>
<section name="Nested Components">
<p>No element may be nested inside a <strong>CookieProcessor</strong>.</p>
</section>
<section name="Special Features">
<p>No special features are associated with a <strong>CookieProcessor</strong>
element.</p>
</section>
</body>
</document>
|
