lemonldap-ng/doc/pages/documentation/current/selfmadeapplication.html
2018-11-26 14:15:43 +01:00

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<h3 class="toggle">Table of Contents</h3>
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<ul class="toc">
<li class="level1"><div class="li"><a href="#presentation">Presentation</a></div></li>
<li class="level1"><div class="li"><a href="#code_snippet">Code snippet</a></div>
<ul class="toc">
<li class="level2"><div class="li"><a href="#perl">Perl</a></div></li>
<li class="level2"><div class="li"><a href="#php">PHP</a></div></li>
</ul>
</li>
<li class="level1"><div class="li"><a href="#perl_auto-protected_cgi">Perl auto-protected CGI</a></div></li>
</ul>
</div>
</div>
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<h1 class="sectionedit1" id="protect_your_application">Protect your application</h1>
<div class="level1">
</div>
<!-- EDIT1 SECTION "Protect your application" [1-40] -->
<h2 class="sectionedit2" id="presentation">Presentation</h2>
<div class="level2">
<p>
Your application can know the connected user using:
</p>
<ul>
<li class="level1"><div class="li"> REMOTE_USER environment variable (with local Handler or SetEnvIf trick)</div>
</li>
<li class="level1"><div class="li"> HTTP header (in all cases)</div>
</li>
</ul>
<p>
To get more information on user (name, mail, etc.), you have to read <a href="writingrulesand_headers.html#headers" class="wikilink1" title="documentation:2.0:writingrulesand_headers">HTTP headers</a>.
</p>
<div class="notetip">If your application is based on <a href="http://search.cpan.org/perldoc?CGI" class="urlextern" title="http://search.cpan.org/perldoc?CGI" rel="nofollow">Perl CGI package</a>, you can simply replace CGI by <a href="#perl_auto-protected_cgi" title="documentation:2.0:selfmadeapplication ↵" class="wikilink1">Lemonldap::NG::Handler::CGI</a>
</div>
</div>
<!-- EDIT2 SECTION "Presentation" [41-542] -->
<h2 class="sectionedit3" id="code_snippet">Code snippet</h2>
<div class="level2">
<p>
Examples with a <a href="writingrulesand_headers.html#headers" class="wikilink1" title="documentation:2.0:writingrulesand_headers">configured header</a> named &#039;Auth-User&#039;:
</p>
</div>
<!-- EDIT3 SECTION "Code snippet" [543-658] -->
<h3 class="sectionedit4" id="perl">Perl</h3>
<div class="level3">
<pre class="code file perl"><a href="http://perldoc.perl.org/functions/print.html"><span class="kw3">print</span></a> <span class="st0">&quot;Connected user: &quot;</span><span class="sy0">.</span><span class="re0">$ENV</span><span class="br0">&#123;</span>HTTP_AUTH_USER<span class="br0">&#125;</span><span class="sy0">;</span></pre>
</div>
<!-- EDIT4 SECTION "Perl" [659-742] -->
<h3 class="sectionedit5" id="php">PHP</h3>
<div class="level3">
<pre class="code file php"><span class="kw1">print</span> <span class="st0">&quot;Connected user: &quot;</span><span class="sy0">.</span><span class="re0">$_SERVER</span><span class="br0">&#91;</span><span class="st0">&quot;HTTP_AUTH_USER&quot;</span><span class="br0">&#93;</span><span class="sy0">;</span></pre>
</div>
<!-- EDIT5 SECTION "PHP" [743-830] -->
<h2 class="sectionedit6" id="perl_auto-protected_cgi">Perl auto-protected CGI</h2>
<div class="level2">
<p>
<abbr title="LemonLDAP::NG">LL::NG</abbr> now uses FastCGI instead of CGI, but you still can write your own protected CGI.
</p>
<p>
First create a PSGI module based on Lemonldap::NG::Handler:
</p>
<pre class="code perl"><a href="http://perldoc.perl.org/functions/package.html"><span class="kw3">package</span></a> My<span class="sy0">::</span><span class="me2">PSGI</span><span class="sy0">;</span>
&nbsp;
<span class="kw2">use</span> base <span class="st0">&quot;Lemonldap::NG::Handler::PSGI&quot;</span><span class="sy0">;</span>
&nbsp;
<span class="kw2">sub</span> init <span class="br0">&#123;</span>
<span class="kw1">my</span> <span class="br0">&#40;</span><span class="re0">$self</span><span class="sy0">,</span><span class="re0">$args</span><span class="br0">&#41;</span> <span class="sy0">=</span> <span class="co5">@_</span><span class="sy0">;</span>
<span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">protection</span><span class="br0">&#40;</span><span class="st_h">'manager'</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">SUPER</span><span class="sy0">::</span><span class="me2">init</span><span class="br0">&#40;</span><span class="re0">$args</span><span class="br0">&#41;</span> <span class="kw1">or</span> <a href="http://perldoc.perl.org/functions/return.html"><span class="kw3">return</span></a> <span class="nu0">0</span><span class="sy0">;</span>
<span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">staticPrefix</span><span class="br0">&#40;</span><span class="st0">&quot;/static&quot;</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">templateDir</span><span class="br0">&#40;</span><span class="st0">&quot;/usr/share/lemonldap-ng/portal/templates&quot;</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="co1"># See Lemonldap::NG::Common::PSGI for more</span>
<span class="co1">#...</span>
<span class="co1"># Return a boolean. If false, then error message has to be stored in</span>
<span class="co1"># $self-&gt;error</span>
<a href="http://perldoc.perl.org/functions/return.html"><span class="kw3">return</span></a> <span class="nu0">1</span><span class="sy0">;</span>
<span class="br0">&#125;</span>
&nbsp;
<span class="kw2">sub</span> handler <span class="br0">&#123;</span>
<span class="kw1">my</span> <span class="br0">&#40;</span> <span class="re0">$self</span><span class="sy0">,</span> <span class="re0">$req</span> <span class="br0">&#41;</span> <span class="sy0">=</span> <span class="co5">@_</span><span class="sy0">;</span>
&nbsp;
<span class="co1"># Will be called only if authorisated</span>
<span class="kw1">my</span> <span class="re0">$userId</span> <span class="sy0">=</span> <span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">userId</span><span class="br0">&#40;</span><span class="re0">$req</span><span class="br0">&#41;</span><span class="sy0">;</span>
<span class="co1">#...</span>
&nbsp;
<span class="co1"># Return JSON</span>
<span class="co1"># $self-&gt;sendJSONresponse(...);</span>
&nbsp;
<span class="co1"># or Return HTML</span>
<span class="re0">$self</span><span class="sy0">-&gt;</span><span class="me1">sendHtml</span><span class="br0">&#40;</span><span class="re0">$req</span><span class="sy0">,</span> <span class="st0">&quot;myskin/mytemplate&quot;</span><span class="sy0">,</span> <span class="br0">&#40;</span> params <span class="sy0">=&gt;</span> <span class="br0">&#123;</span> <span class="st_h">'userId'</span> <span class="sy0">=&gt;</span> <span class="re0">$userId</span> <span class="br0">&#125;</span><span class="br0">&#41;</span> <span class="br0">&#41;</span><span class="sy0">;</span>
<span class="br0">&#125;</span></pre>
<p>
They create a FCGI script like this:
</p>
<pre class="code perl"><span class="co1">#!/usr/bin/env perl</span>
&nbsp;
<span class="kw2">use</span> My<span class="sy0">::</span><span class="me2">PSGI</span><span class="sy0">;</span>
<span class="kw2">use</span> Plack<span class="sy0">::</span><span class="me2">Handler</span><span class="sy0">::</span><span class="me2">FCGI</span><span class="sy0">;</span>
&nbsp;
Plack<span class="sy0">::</span><span class="me2">Handler</span><span class="sy0">::</span><span class="me2">FCGI</span><span class="sy0">-&gt;</span><span class="me1">new</span><span class="sy0">-&gt;</span><span class="me1">run</span><span class="br0">&#40;</span> My<span class="sy0">::</span><span class="me2">PSGI</span><span class="sy0">-&gt;</span><span class="me1">run</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>
See our LLNG Nginx/Apache configurations to see how to launch it or read <a href="https://plackperl.org/" class="urlextern" title="https://plackperl.org/" rel="nofollow">PSGI/Plack documentation</a>.
</p>
<p>
The protection parameter must be set when calling the init() method:
</p>
<ul>
<li class="level1"><div class="li"> <code>none</code>: no protection</div>
</li>
<li class="level1"><div class="li"> <code>authenticate</code>: check authentication but do not manage authorization</div>
</li>
<li class="level1"><div class="li"> <code>manager</code>: rely on virtual host configuration in Manager</div>
</li>
<li class="level1"><div class="li"> <code>rule: xxx</code>: apply a specific rule </div>
</li>
</ul>
</div>
<!-- EDIT6 SECTION "Perl auto-protected CGI" [831-] --></div>
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