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<div class="dokuwiki export">
<h1><a name="facebook" id="facebook">Facebook</a></h1>
<div class="level1">
<table class="inline">
<tr class="row0 roweven">
<th class="col0">Authentication </th><th class="col1"> Users </th><th class="col2"> Password </th>
</tr>
<tr class="row1 rowodd">
<td class="col0 centeralign"> ✔ </td><td class="col1 centeralign"> ✔ </td><td class="col2"> </td>
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<h2><a name="presentation" id="presentation">Presentation</a></h2>
<div class="level2">
<p>
<a href="http://facebook.com" class="urlextern" title="http://facebook.com" rel="nofollow">Facebook</a> is a famous social network service. Facebook uses <a href="http://en.wikipedia.org/wiki/OAuth2" class="urlextern" title="http://en.wikipedia.org/wiki/OAuth2" rel="nofollow">OAuth2</a> protocol to allow applications to reuse its own authentication process (it means, if your are connected to Facebook, other applications can trust Facebook and let you in).
</p>
<p>
You need <a href="https://metacpan.org/release/Net-Facebook-Oauth2" class="urlextern" title="https://metacpan.org/release/Net-Facebook-Oauth2" rel="nofollow">Net::Facebook::Oauth2</a> package.
</p>
<p>
You need to register a new application on Facebook to get an application ID and a secret. See <a href="https://developers.facebook.com/apps" class="urlextern" title="https://developers.facebook.com/apps" rel="nofollow">https://developers.facebook.com/apps</a> on how to do that.
</p>
</div>
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<h2><a name="configuration" id="configuration">Configuration</a></h2>
<div class="level2">
<p>
In Manager, go in <code>General Parameters</code> > <code>Authentication modules</code> and choose Facebook for authentication module. You can also use Facebook as user database.
</p>
<p>
Then, go in <code>Facebook parameters</code>:
</p>
<ul>
<li class="level1"><div class="li"> <strong>Authentication level</strong>: authentication level for this module.</div>
</li>
<li class="level1"><div class="li"> <strong>Facebook application ID</strong>: the application ID you get</div>
</li>
<li class="level1"><div class="li"> <strong>Facebook application secret</strong>: the corresponding secret</div>
</li>
</ul>
<p>
If you use Facebook as user database, declare values in exported variables :
</p>
<ul>
<li class="level1"><div class="li"> use any key name you want. If you want to refuse access when a data is missing, just add a ”!” before the key name</div>
</li>
<li class="level1"><div class="li"> in the value field, set the field name. You can show them using <a href="https://developers.facebook.com/tools/explorer" class="urlextern" title="https://developers.facebook.com/tools/explorer" rel="nofollow">Facebook Graph API explorer</a></div>
</li>
</ul>
<p>
<p><div class="notetip">You can use the same Facebook access token in your applications. It is stored in session datas under the name <strong>$_facebookToken</strong>
</div></p>
</p>
</div>
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