mirror of
https://github.com/apache/httpd.git
synced 2025-11-03 17:53:20 +03:00
469830d1a0
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1802043 13f79535-47bb-0310-9956-ffa450edef68
289 lines
20 KiB
XML
289 lines
20 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
|
||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head>
|
||
<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" />
|
||
<!--
|
||
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
||
This file is generated from xml source: DO NOT EDIT
|
||
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
|
||
-->
|
||
<title>mod_auth_basic - Apache HTTP Server Version 2.5</title>
|
||
<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
|
||
<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
|
||
<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" />
|
||
<script src="../style/scripts/prettify.min.js" type="text/javascript">
|
||
</script>
|
||
|
||
<link href="../images/favicon.ico" rel="shortcut icon" /></head>
|
||
<body>
|
||
<div id="page-header">
|
||
<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
|
||
<p class="apache">Apache HTTP Server Version 2.5</p>
|
||
<img alt="" src="../images/feather.png" /></div>
|
||
<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
|
||
<div id="path">
|
||
<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div>
|
||
<div id="page-content">
|
||
<div id="preamble"><h1>Apache Module mod_auth_basic</h1>
|
||
<div class="toplang">
|
||
<p><span>Available Languages: </span><a href="../en/mod/mod_auth_basic.html" title="English"> en </a> |
|
||
<a href="../es/mod/mod_auth_basic.html" hreflang="es" rel="alternate" title="Espa<70>ol"> es </a> |
|
||
<a href="../fr/mod/mod_auth_basic.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
|
||
<a href="../ja/mod/mod_auth_basic.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
|
||
<a href="../ko/mod/mod_auth_basic.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
|
||
</div>
|
||
<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Basic HTTP authentication</td></tr>
|
||
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
|
||
<tr><th><a href="module-dict.html#ModuleIdentifier">Module<EFBFBD>Identifier:</a></th><td>auth_basic_module</td></tr>
|
||
<tr><th><a href="module-dict.html#SourceFile">Source<EFBFBD>File:</a></th><td>mod_auth_basic.c</td></tr></table>
|
||
<h3>Summary</h3>
|
||
|
||
<p>This module allows the use of HTTP Basic Authentication to
|
||
restrict access by looking up users in the given providers.
|
||
HTTP Digest Authentication is provided by
|
||
<code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>. This module should
|
||
usually be combined with at least one authentication module
|
||
such as <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> and one authorization
|
||
module such as <code class="module"><a href="../mod/mod_authz_user.html">mod_authz_user</a></code>.</p>
|
||
</div>
|
||
<div id="quickview"><h3 class="directives">Directives</h3>
|
||
<ul id="toc">
|
||
<li><img alt="" src="../images/down.gif" /> <a href="#authbasicauthoritative">AuthBasicAuthoritative</a></li>
|
||
<li><img alt="" src="../images/down.gif" /> <a href="#authbasicfake">AuthBasicFake</a></li>
|
||
<li><img alt="" src="../images/down.gif" /> <a href="#authbasicprovider">AuthBasicProvider</a></li>
|
||
<li><img alt="" src="../images/down.gif" /> <a href="#authbasicusedigestalgorithm">AuthBasicUseDigestAlgorithm</a></li>
|
||
</ul>
|
||
<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_auth_basic">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_auth_basic">Report a bug</a></li></ul><h3>See also</h3>
|
||
<ul class="seealso">
|
||
<li><code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code></li>
|
||
<li><code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code></li>
|
||
<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li>
|
||
<li><a href="../howto/auth.html">Authentication howto</a></li>
|
||
<li><a href="#comments_section">Comments</a></li></ul></div>
|
||
|
||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
|
||
<div class="directive-section"><h2><a name="AuthBasicAuthoritative" id="AuthBasicAuthoritative">AuthBasicAuthoritative</a> <a name="authbasicauthoritative" id="authbasicauthoritative">Directive</a></h2>
|
||
<table class="directive">
|
||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets whether authorization and authentication are passed to
|
||
lower level modules</td></tr>
|
||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicAuthoritative On|Off</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicAuthoritative On</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
|
||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
|
||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
|
||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr>
|
||
</table>
|
||
<p>Normally, each authorization module listed in <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code> will attempt
|
||
to verify the user, and if the user is not found in any provider,
|
||
access will be denied. Setting the
|
||
<code class="directive">AuthBasicAuthoritative</code> directive explicitly
|
||
to <code>Off</code> allows for both authentication and
|
||
authorization to be passed on to other non-provider-based modules
|
||
if there is <strong>no userID</strong> or <strong>rule</strong>
|
||
matching the supplied userID. This should only be necessary when
|
||
combining <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> with third-party modules
|
||
that are not configured with the <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code>
|
||
directive. When using such modules, the order of processing
|
||
is determined in the modules' source code and is not configurable.</p>
|
||
|
||
</div>
|
||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
|
||
<div class="directive-section"><h2><a name="AuthBasicFake" id="AuthBasicFake">AuthBasicFake</a> <a name="authbasicfake" id="authbasicfake">Directive</a></h2>
|
||
<table class="directive">
|
||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Fake basic authentication using the given expressions for
|
||
username and password</td></tr>
|
||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicFake off|username [password]</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>none</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
|
||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
|
||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
|
||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr>
|
||
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.5 and later</td></tr>
|
||
</table>
|
||
<p>The username and password specified are combined into an
|
||
Authorization header, which is passed to the server or service
|
||
behind the webserver. Both the username and password fields are
|
||
interpreted using the <a href="../expr.html">expression parser</a>,
|
||
which allows both the username and password to be set based on
|
||
request parameters.</p>
|
||
|
||
<p>If the password is not specified, the default value "password"
|
||
will be used. To disable fake basic authentication for an URL
|
||
space, specify "AuthBasicFake off".</p>
|
||
|
||
<p>In this example, we pass a fixed username and password to a
|
||
backend server.</p>
|
||
|
||
<div class="example"><h3>Fixed Example</h3><pre class="prettyprint lang-config"><Location "/demo">
|
||
AuthBasicFake demo demopass
|
||
</Location></pre>
|
||
</div>
|
||
|
||
<p>In this example, we pass the email address extracted from a client
|
||
certificate, extending the functionality of the FakeBasicAuth option
|
||
within the <code class="directive"><a href="../mod/mod_ssl.html#ssloptions">SSLOptions</a></code>
|
||
directive. Like the FakeBasicAuth option, the password is set to the
|
||
fixed string "password".</p>
|
||
|
||
<div class="example"><h3>Certificate Example</h3><pre class="prettyprint lang-config"><Location "/secure">
|
||
AuthBasicFake "%{SSL_CLIENT_S_DN_Email}"
|
||
</Location></pre>
|
||
</div>
|
||
|
||
<p>Extending the above example, we generate a password by hashing the
|
||
email address with a fixed passphrase, and passing the hash to the
|
||
backend server. This can be used to gate into legacy systems that do
|
||
not support client certificates.</p>
|
||
|
||
<div class="example"><h3>Password Example</h3><pre class="prettyprint lang-config"><Location "/secure">
|
||
AuthBasicFake "%{SSL_CLIENT_S_DN_Email}" "%{sha1:passphrase-%{SSL_CLIENT_S_DN_Email}}"
|
||
</Location></pre>
|
||
</div>
|
||
|
||
<div class="example"><h3>Exclusion Example</h3><pre class="prettyprint lang-config"><Location "/public">
|
||
AuthBasicFake off
|
||
</Location></pre>
|
||
</div>
|
||
|
||
|
||
</div>
|
||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
|
||
<div class="directive-section"><h2><a name="AuthBasicProvider" id="AuthBasicProvider">AuthBasicProvider</a> <a name="authbasicprovider" id="authbasicprovider">Directive</a></h2>
|
||
<table class="directive">
|
||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the authentication provider(s) for this location</td></tr>
|
||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicProvider <var>provider-name</var>
|
||
[<var>provider-name</var>] ...</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicProvider file</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
|
||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
|
||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
|
||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr>
|
||
</table>
|
||
<p>The <code class="directive">AuthBasicProvider</code> directive sets
|
||
which provider is used to authenticate the users for this location.
|
||
The default <code>file</code> provider is implemented
|
||
by the <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> module. Make sure
|
||
that the chosen provider module is present in the server.</p>
|
||
<div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location "/secure">
|
||
AuthType basic
|
||
AuthName "private area"
|
||
AuthBasicProvider dbm
|
||
AuthDBMType SDBM
|
||
AuthDBMUserFile "/www/etc/dbmpasswd"
|
||
Require valid-user
|
||
</Location></pre>
|
||
</div>
|
||
<p> Providers are queried in order until a provider finds a match
|
||
for the requested username, at which point this sole provider will
|
||
attempt to check the password. A failure to verify the password does
|
||
not result in control being passed on to subsequent providers.</p>
|
||
|
||
<p>Providers are implemented by <code class="module"><a href="../mod/mod_authn_dbm.html">mod_authn_dbm</a></code>,
|
||
<code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code>, <code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code>,
|
||
<code class="module"><a href="../mod/mod_authnz_ldap.html">mod_authnz_ldap</a></code> and <code class="module"><a href="../mod/mod_authn_socache.html">mod_authn_socache</a></code>.</p>
|
||
|
||
</div>
|
||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
|
||
<div class="directive-section"><h2><a name="AuthBasicUseDigestAlgorithm" id="AuthBasicUseDigestAlgorithm">AuthBasicUseDigestAlgorithm</a> <a name="authbasicusedigestalgorithm" id="authbasicusedigestalgorithm">Directive</a></h2>
|
||
<table class="directive">
|
||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Check passwords against the authentication providers as if
|
||
Digest Authentication was in force instead of Basic Authentication.
|
||
</td></tr>
|
||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicUseDigestAlgorithm MD5|Off</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicUseDigestAlgorithm Off</code></td></tr>
|
||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
|
||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
|
||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
|
||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr>
|
||
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.7 and later</td></tr>
|
||
</table>
|
||
<p>Normally, when using Basic Authentication, the providers listed in
|
||
<code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code>
|
||
attempt to verify a user by checking their data stores for
|
||
a matching username and associated password. The stored passwords
|
||
are usually encrypted, but not necessarily so; each provider may
|
||
choose its own storage scheme for passwords.</p>
|
||
|
||
<p>When using <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">AuthDigestProvider</a></code> and Digest
|
||
Authentication, providers perform a similar check to find a matching
|
||
username in their data stores. However, unlike in the Basic
|
||
Authentication case, the value associated with each stored username
|
||
must be an encrypted string composed from the username, realm name,
|
||
and password. (See
|
||
<a href="http://tools.ietf.org/html/rfc2617#section-3.2.2.2">
|
||
RFC 2617, Section 3.2.2.2</a> for more details on the format used
|
||
for this encrypted string.)</p>
|
||
|
||
<p>As a consequence of the difference in the stored values between
|
||
Basic and Digest Authentication, converting from Digest
|
||
Authentication to Basic Authentication generally requires that all
|
||
users be assigned new passwords, as their existing passwords cannot
|
||
be recovered from the password storage scheme imposed on those
|
||
providers which support Digest Authentication.</p>
|
||
|
||
<p>Setting the <code class="directive"><a href="#authbasicusedigestalgorithm">AuthBasicUseDigestAlgorithm</a></code> directive
|
||
to <code>MD5</code> will cause the user's Basic Authentication password
|
||
to be checked using the same encrypted format as for Digest
|
||
Authentication. First a string composed from the username, realm name,
|
||
and password is hashed with MD5; then the username and this encrypted
|
||
string are passed to the providers listed in
|
||
<code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code>
|
||
as if
|
||
<code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code>
|
||
was set to <code>Digest</code> and Digest Authentication was in force.
|
||
</p>
|
||
|
||
<p>Through the use of <code class="directive"><a href="#authbasicusedigestalgorithm">AuthBasicUseDigestAlgorithm</a></code>
|
||
a site may switch from Digest to Basic Authentication without
|
||
requiring users to be assigned new passwords.</p>
|
||
|
||
<div class="note">
|
||
The inverse process of switching from Basic to Digest
|
||
Authentication without assigning new passwords is generally
|
||
not possible. Only if the Basic Authentication passwords
|
||
have been stored in plain text or with a reversable encryption
|
||
scheme will it be possible to recover them and generate a
|
||
new data store following the Digest Authentication password
|
||
storage scheme.
|
||
</div>
|
||
|
||
<div class="note">
|
||
Only providers which support Digest Authentication will be able
|
||
to authenticate users when <code class="directive"><a href="#authbasicusedigestalgorithm">AuthBasicUseDigestAlgorithm</a></code>
|
||
is set to <code>MD5</code>. Use of other providers will result
|
||
in an error response and the client will be denied access.
|
||
</div>
|
||
|
||
</div>
|
||
</div>
|
||
<div class="bottomlang">
|
||
<p><span>Available Languages: </span><a href="../en/mod/mod_auth_basic.html" title="English"> en </a> |
|
||
<a href="../es/mod/mod_auth_basic.html" hreflang="es" rel="alternate" title="Espa<70>ol"> es </a> |
|
||
<a href="../fr/mod/mod_auth_basic.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
|
||
<a href="../ja/mod/mod_auth_basic.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
|
||
<a href="../ko/mod/mod_auth_basic.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
|
||
</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
|
||
<script type="text/javascript"><!--//--><![CDATA[//><!--
|
||
var comments_shortname = 'httpd';
|
||
var comments_identifier = 'http://httpd.apache.org/docs/trunk/mod/mod_auth_basic.html';
|
||
(function(w, d) {
|
||
if (w.location.hostname.toLowerCase() == "httpd.apache.org") {
|
||
d.write('<div id="comments_thread"><\/div>');
|
||
var s = d.createElement('script');
|
||
s.type = 'text/javascript';
|
||
s.async = true;
|
||
s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier;
|
||
(d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s);
|
||
}
|
||
else {
|
||
d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>');
|
||
}
|
||
})(window, document);
|
||
//--><!]]></script></div><div id="footer">
|
||
<p class="apache">Copyright 2017 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
|
||
<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!--
|
||
if (typeof(prettyPrint) !== 'undefined') {
|
||
prettyPrint();
|
||
}
|
||
//--><!]]></script>
|
||
</body></html> |