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<a name="The.widgets"></a>
<h1>The widgets</h1>

<pre><code>version: 1
Date:    29 mai 2016
Author:  José Bollo
</code></pre>

<p><ul>
 <li><a href="#The.widgets">The widgets</a>
 <ul>
  <li><a href="#The.widgets">The widgets</a>
  <ul>
   <li><a href="#signature.of.the">signature of the</a></li>
   <li><a href="#directory.where.are.stored.applications">directory where are stored applications</a>
</li>
  </ul>
  </li>
 </ul>
 </li>
 <li><a href="#Organisation.of.directory.of.applications">Organisation of directory of applications</a>
 <ul>
  <li><a href="#Identity.of.installed.files">Identity of installed files</a></li>
  <li><a href="#Labelling.the.directories.of.applications">Labelling the directories of applications</a></li>
 </ul>
 </li>
 <li><a href="#Organisation.of.data">Organisation of data</a></li>
</ul></p>

<a name="The.widgets"></a>
<h2>The widgets</h2>

<p>The widgets are described by the technical recommendations
<a href="http://www.w3.org/TR/widgets" title="Packaged Web Apps">widgets</a> and <a href="http://www.w3.org/TR/widgets-digsig" title="XML Digital Signatures for Widgets">widgets-digsig</a>.</p>

<a name="signature.of.the"></a>
<h3>signature of the</h3>

<p>The application framework</p>

<p>This is the original part of our work here</p>

<a name="directory.where.are.stored.applications"></a>
<h3>directory where are stored applications</h3>

<p>Applications can be installed in few places: on the system itself or on an extension device.
For my phone, for example, it is the sd card.</p>

<p>This translates to:</p>

<ul>
<li>/usr/applications: for system wide applications</li>
<li>/opt/applications: for removable applications</li>
</ul>


<p>In the remaining of the document, these places are writen &ldquo;APPDIR&rdquo;.</p>

<a name="Organisation.of.directory.of.applications"></a>
<h1>Organisation of directory of applications</h1>

<p>The main path for applivcations are: APPDIR/PKGID/VER.</p>

<p>Where:</p>

<ul>
<li>APPDIR is as defined above</li>
<li>PKGID is a directory whose name is the package identifier</li>
<li>VER is the version of the package MAJOR.MINOR</li>
</ul>


<p>This organisation has the advantage to allow several versions to leave together.
This is needed for some good reasons (rolling back) and also for less good reasons (user habits).</p>

<a name="Identity.of.installed.files"></a>
<h2>Identity of installed files</h2>

<p>All the files are installed as the user &ldquo;userapp&rdquo; and group &ldquo;userapp&rdquo;.
All files have rw(x) for user and r-(x) for group and others.</p>

<p>This allows any user to read the files.</p>

<a name="Labelling.the.directories.of.applications"></a>
<h2>Labelling the directories of applications</h2>

<a name="Organisation.of.data"></a>
<h1>Organisation of data</h1>

<p>The data of a user are in its directory and are labelled using the labels of the application</p>
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