158 lines
9.1 KiB
HTML
158 lines
9.1 KiB
HTML
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<!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:writingrulesand_headers</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,writingrulesand_headers"/>
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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="writingrulesand_headers.html"/>
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<link rel="contents" href="writingrulesand_headers.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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<link rel="stylesheet" type="text/css" href="/static/bwr/bootstrap/dist/css/bootstrap.min.css"/>
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<script type="text/javascript">/*<![CDATA[*/var NS='documentation:2.0';var JSINFO = {"id":"documentation:2.0:writingrulesand_headers","namespace":"documentation:2.0"};
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/*!]]>*/</script>
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<script type="text/javascript" charset="utf-8" src="lib/exe/js.php.t.bootstrap3.js"></script>
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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="writing_rules_and_headers">Writing rules and headers</h1>
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<div class="level1">
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<p>
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Lemonldap::NG manage applications by their hostname (Apache's virtualHosts). Rules are used to protect applications, headers are HTTP headers added to the request to give datas to the application (for logs, profiles,…).
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</p>
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<div class="noteimportant">Note that variables designed by $xx correspond to the name of the <a href="exportedvars.html" class="wikilink1" title="documentation:2.0:exportedvars">exported variables</a> or <a href="performances.html#macros_and_groups" class="wikilink1" title="documentation:2.0:performances">macro names</a>.
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</div>
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<p>
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See also <a href="extendedfunctions.html" class="wikilink1" title="documentation:2.0:extendedfunctions">extended functions</a>.
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</p>
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</div>
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<!-- EDIT1 SECTION "Writing rules and headers" [1-492] -->
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<h2 class="sectionedit2" id="rules">Rules</h2>
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<div class="level2">
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<p>
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A rule associates a <a href="http://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions" class="urlextern" title="http://en.wikipedia.org/wiki/Perl_Compatible_Regular_Expressions" rel="nofollow">regular expression</a> to a Perl boolean expression or a keyword.
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</p>
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<p>
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<a href="documentation/manager-rule.png_documentation_2.0_writingrulesand_headers.html" class="media" title="documentation:manager-rule.png"><img src="documentation/manager-rule.png" class="mediacenter" alt="" /></a>
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</p>
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<p>
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Examples:
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</p>
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<div class="table sectionedit3"><table class="inline table table-bordered table-striped">
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<thead>
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<tr class="row0 roweven">
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<th class="col0 centeralign"> Goal </th><th class="col1 centeralign"> Regular expression </th><th class="col2 centeralign"> Rule </th>
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</tr>
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</thead>
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<tr class="row1 rowodd">
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<td class="col0 leftalign"> Restrict /admin/ directory to user bart.simpson </td><td class="col1 centeralign"> ^/admin/ </td><td class="col2 centeralign"> $uid eq "bart.simpson" </td>
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</tr>
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<tr class="row2 roweven">
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<td class="col0 leftalign"> Restrict /js/ and /css/ directory to authenticated users </td><td class="col1 centeralign"> ^/(css|js)/ </td><td class="col2 centeralign"> accept </td>
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</tr>
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<tr class="row3 rowodd">
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<td class="col0 leftalign"> Deny access to /config/ directory </td><td class="col1 centeralign"> ^/config/ </td><td class="col2 centeralign"> deny </td>
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</tr>
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<tr class="row4 roweven">
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<td class="col0 leftalign"> Do not restrict /public/ </td><td class="col1 centeralign"> ^/public/ </td><td class="col2 centeralign"> skip </td>
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</tr>
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<tr class="row5 rowodd">
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<td class="col0 leftalign"> Makes authentication optional, but authenticated users are seen as such (that is, user data are sent to the app through HTTP headers) </td><td class="col1 centeralign"> ^/forum/ </td><td class="col2 centeralign"> unprotect </td>
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</tr>
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<tr class="row6 roweven">
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<td class="col0 leftalign"> Restrict access to the whole site to users that have the LDAP description field set to “LDAP administrator” (must be set in exported variables) </td><td class="col1 centeralign"> default </td><td class="col2 centeralign"> $description eq "LDAP administrator" </td>
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</tr>
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</table></div>
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<!-- EDIT3 TABLE [715-1558] -->
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<p>
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The “<strong>default</strong>” access rule is used if no other access rule match the current <abbr title="Uniform Resource Locator">URL</abbr>.
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</p>
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<div class="notetip"><ul>
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<li class="level1"><div class="li"> Comments can be used to order your rules: rules are applied in the alphabetical order of comment (or regexp in there is no comment). See <strong><a href="security.html#write_good_rules" class="wikilink1" title="documentation:2.0:security">security chapter</a></strong> to learn more about writing good rules.</div>
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</li>
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<li class="level1"><div class="li"> See <a href="performances.html#handler_performance" class="wikilink1" title="documentation:2.0:performances">performances</a> to know how to use macros and groups in rules.</div>
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</li>
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</ul>
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</div>
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<p>
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Rules can also be used to intercept logout <abbr title="Uniform Resource Locator">URL</abbr>:
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</p>
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<div class="table sectionedit4"><table class="inline table table-bordered table-striped">
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<thead>
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<tr class="row0 roweven">
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<th class="col0 centeralign"> Goal </th><th class="col1 centeralign"> Regular expression </th><th class="col2 centeralign"> Rule </th>
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</tr>
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</thead>
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<tr class="row1 rowodd">
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<td class="col0 leftalign"> Logout user from Lemonldap::NG and redirect it to http://intranet/ </td><td class="col1 centeralign"> ^/index.php\?logout </td><td class="col2 centeralign"> logout_sso http://intranet/ </td>
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</tr>
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<tr class="row2 roweven">
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<td class="col0 leftalign"> Logout user from current application and redirect it to the menu </td><td class="col1 centeralign"> ^/index.php\?logout </td><td class="col2 centeralign"> logout_app https://auth.example.com/ </td>
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</tr>
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<tr class="row3 rowodd">
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<td class="col0 leftalign"> Logout user from current application and from Lemonldap::NG and redirect it to http://intranet/ </td><td class="col1 centeralign"> ^/index.php\?logout </td><td class="col2 centeralign"> logout_app_sso http://intranet/ </td>
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</tr>
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</table></div>
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<!-- EDIT4 TABLE [2052-2657] --><div class="notetip">By default, user will be redirected on portal if no <abbr title="Uniform Resource Locator">URL</abbr> defined, or on the specified <abbr title="Uniform Resource Locator">URL</abbr> if any.
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</div><div class="noteimportant">Only current application is concerned by logout_app* targets. Be careful with some applications which doesn't verify Lemonldap::NG headers after having created their own cookies. If so, you can redirect users to a <abbr title="HyperText Markup Language">HTML</abbr> page that explain that it is safe to close browser after disconnect.
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</div>
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</div>
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<!-- EDIT2 SECTION "Rules" [493-3085] -->
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<h2 class="sectionedit5" id="headers">Headers</h2>
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<div class="level2">
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<p>
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Headers are associations between an header name and a perl expression that returns a string. Headers are used to give user datas to the application.
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</p>
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<p>
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Examples:
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</p>
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<div class="table sectionedit6"><table class="inline table table-bordered table-striped">
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<thead>
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<tr class="row0 roweven">
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<th class="col0 centeralign"> Goal </th><th class="col1 centeralign"> Header name </th><th class="col2 centeralign"> Header value </th>
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</tr>
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</thead>
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<tr class="row1 rowodd">
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<td class="col0 leftalign"> Give the uid (for accounting) </td><td class="col1 centeralign"> Auth-User </td><td class="col2 centeralign"> $uid </td>
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</tr>
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<tr class="row2 roweven">
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<td class="col0 leftalign"> Give a static value </td><td class="col1 centeralign"> Some-Thing </td><td class="col2 centeralign"> “static-value” </td>
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</tr>
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<tr class="row3 rowodd">
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<td class="col0 leftalign"> Give display name </td><td class="col1 centeralign"> Display-Name </td><td class="col2 centeralign"> $givenName.“ ”.$surName </td>
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</tr>
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<tr class="row4 roweven">
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<td class="col0 leftalign"> Give a non ascii data </td><td class="col1 centeralign"> Display-Name </td><td class="col2 centeralign"> encode_base64($givenName." ".$surName) </td>
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</tr>
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</table></div>
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<!-- EDIT6 TABLE [3269-3602] -->
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<p>
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As described in <a href="performances.html#handler_performance" class="wikilink1" title="documentation:2.0:performances">performances chapter</a>, you can use macros, local macros,…
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</p>
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<div class="noteimportant"><ul>
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<li class="level1"><div class="li"> Since many HTTP servers refuse non ascii headers, it is recommended to use encode_base64() function to transmit those headers</div>
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</li>
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<li class="level1"><div class="li"> Header names must contain only letters and “-” character</div>
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</li>
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</ul>
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</div><div class="notetip">By default, <abbr title="Single Sign On">SSO</abbr> cookie is hidden, so protected applications cannot get <abbr title="Single Sign On">SSO</abbr> session key. But you can forward this key if it is really needed:
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<pre class="code">Session-ID => $_session_id</pre>
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</div>
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</div>
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<!-- EDIT5 SECTION "Headers" [3086-] --></div>
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</body>
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</html>
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