79 lines
3.8 KiB
HTML
79 lines
3.8 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
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lang="en" dir="ltr">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title></title>
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<!-- metadata -->
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<meta name="generator" content="Offline" />
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<meta name="version" content="Offline 0.1" />
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<!-- style sheet links -->
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<link rel="stylesheet" media="all" type="text/css" href="../../../css/all.css" />
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<link rel="stylesheet" media="screen" type="text/css" href="../../../css/screen.css" />
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<link rel="stylesheet" media="print" type="text/css" href="../../../css/print.css" />
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</head>
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<body>
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<div class="dokuwiki export">
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<h1 class="sectionedit1" id="convert_http_header_into_environment_variable">Convert HTTP header into environment variable</h1>
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<div class="level1">
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<p>
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Using <abbr title="LemonLDAP::NG">LL::NG</abbr> in reverse proxy mode, you will not have the <code>REMOTE_USER</code> environment variable set. Indeed, this variable is set by the Handler on the physical server hosting the Handler, and not on other servers where the Handler is not installed.
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</p>
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<p>
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Apache <a href="http://httpd.apache.org/docs/current/mod/mod_setenvif.html" class="urlextern" title="http://httpd.apache.org/docs/current/mod/mod_setenvif.html" rel="nofollow">SetEnvIf module</a> will let you transform the Auth-User HTTP header in <code>REMOTE_USER</code> environment variable:
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</p>
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<pre class="code file apache"><span class="kw1">SetEnvIfNoCase</span> Auth-<span class="kw1">User</span> <span class="st0">"(.*)"</span> REMOTE_USER=$1</pre>
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<p>
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This can be used to protect applications relying on <code>REMOTE_USER</code> environment variable in reverse proxy mode. In this case you will have two Apache configuration files:
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</p>
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<ul>
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<li class="level1"><div class="li"> Apache configuration file on <abbr title="LemonLDAP::NG">LL::NG</abbr> reverse proxy (hosting <abbr title="LemonLDAP::NG">LL::NG</abbr> Handler):</div>
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</li>
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</ul>
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<pre class="code file apache"><<span class="kw3">VirtualHost</span> *:<span class="nu0">80</span>>
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<span class="kw1">ServerName</span> application.example.com
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PerlHeaderParserHandler Lemonldap::NG::Handler
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<span class="kw1">ProxyPreserveHost</span> <span class="kw2">on</span>
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<span class="kw1">ProxyPass</span> / http://APPLICATION_IP/
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<span class="kw1">ProxyPassReverse</span> / http://APPLICATION_IP/
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</<span class="kw3">VirtualHost</span>></pre>
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<ul>
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<li class="level1"><div class="li"> Apache configuration file on application server (hosting the application):</div>
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</li>
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</ul>
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<pre class="code file apache"><<span class="kw3">VirtualHost</span> *:<span class="nu0">80</span>>
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<span class="kw1">ServerName</span> application.example.com
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<span class="kw1">SetEnvIfNoCase</span> Auth-<span class="kw1">User</span> <span class="st0">"(.*)"</span> REMOTE_USER=$1
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<span class="kw1">DocumentRoot</span> /var/www/application
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</<span class="kw3">VirtualHost</span>></pre>
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<p>
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<p><div class="notetip">
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Sometimes, PHP applications also check the PHP_AUTH_USER and PHP_AUHT_PW environment variables. You can set them the same way:
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</p>
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<pre class="code file apache"><span class="kw1">SetEnvIfNoCase</span> Auth-<span class="kw1">User</span> <span class="st0">"(.*)"</span> PHP_AUTH_USER=$1
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<span class="kw1">SetEnvIfNoCase</span> Auth-Password <span class="st0">"(.*)"</span> PHP_AUTH_PW=$1</pre>
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<p>
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Of course, you need to <a href="../../documentation/2.0/passwordstore.html" class="wikilink1" title="documentation:2.0:passwordstore">store password in session</a> to fill PHP_AUTH_PW.
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</div></p>
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</p>
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</div>
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</div><!-- closes <div class="dokuwiki export">--> |