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<a name="The.widgets"></a>
<h1>The widgets</h1>
<pre><code>version: 1
Date: 30 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">signature</a></li>
<li><a href="#directory.where.are.stored.applications">directory where are stored applications</a>
</li>
</ul>
</li>
</ul>
</li>
<li><a href="#Organization.of.directory.of.applications">Organization of directory of applications</a>
<ul>
<li><a href="#Identity.of.installed.files">Identity of installed files</a></li>
<li><a href="#labeling.the.directories.of.applications">labeling the directories of applications</a></li>
</ul>
</li>
<li><a href="#organization.of.data">organization 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"></a>
<h3>signature</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 different places: the system itself, extension device.
On a phone application are typically installed on the sd card.</p>
<p>This translates to:</p>
<ul>
<li>/usr/applications: system wide applications</li>
<li>/opt/applications: removable applications</li>
</ul>
<p>From here those paths are referenced as: “APPDIR”.</p>
<a name="Organization.of.directory.of.applications"></a>
<h1>Organization of directory of applications</h1>
<p>The main path for applications is: 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 organization 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 files are installed as user “userapp” and group “userapp”.
All files have rw(x) for user and r-(x) for group and others.</p>
<p>This allows every user to read every file.</p>
<a name="labeling.the.directories.of.applications"></a>
<h2>labeling the directories of applications</h2>
<a name="organization.of.data"></a>
<h1>organization 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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