117 lines
6.0 KiB
HTML
117 lines
6.0 KiB
HTML
<!DOCTYPE html>
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<html lang="en" dir="ltr">
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<head>
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<meta charset="utf-8" />
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<title>documentation:2.0:header_remote_user_conversion</title>
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<meta name="generator" content="DokuWiki"/>
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<meta name="robots" content="index,follow"/>
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<meta name="keywords" content="documentation,2.0,header_remote_user_conversion"/>
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<link rel="search" type="application/opensearchdescription+xml" href="lib/exe/opensearch.html" title="LemonLDAP::NG"/>
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<link rel="start" href="header_remote_user_conversion.html"/>
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<link rel="contents" href="header_remote_user_conversion.html" title="Sitemap"/>
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<link rel="stylesheet" type="text/css" href="lib/exe/css.php.t.bootstrap3.css"/>
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//else -->
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</head>
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<body>
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<div class="dokuwiki export container">
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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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</div>
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<!-- EDIT1 SECTION "Convert HTTP header into environment variable" [1-61] -->
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<h2 class="sectionedit2" id="apache">Apache</h2>
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<div class="level2">
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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::ApacheMP2
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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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<div class="notetip">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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<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="passwordstore.html" class="wikilink1" title="documentation:2.0:passwordstore">store password in session</a> to fill PHP_AUTH_PW.
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</p>
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</div>
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</div>
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<!-- EDIT2 SECTION "Apache" [62-1767] -->
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<h2 class="sectionedit3" id="nginx">Nginx</h2>
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<div class="level2">
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<p>
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Nginx doesn't launch directly PHP pages (or other languages): it dials with FastCGI servers (like php-fpm). As you can see in examples, it's easy to map a LLNG header to a fastcgi param. Example:
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</p>
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<pre class="code file nginx">auth_request_set $authuser $upstream_http_auth_user;
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fastcgi_param HTTP_MYVAR $authuser;</pre>
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</div>
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<!-- EDIT3 SECTION "Nginx" [1768-] --></div>
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</body>
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</html>
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