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authorJosé Bollo <jose.bollo@iot.bzh>2016-10-26 18:24:13 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2016-10-28 15:35:02 +0200
commit4a1409460a7c0a5d26fe10b5f84368b3cb8b8b5a (patch)
tree2ebad5e0b1eca2729c2eda6c1fe029d8e1baef13 /doc/widgets.html
parent27bb304eee3485c73e1be677fbc820591bacc2f9 (diff)
doc: switch to mkdocs
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-<!DOCTYPE html>
-<html>
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- <meta charset="utf-8">
- <meta name="generator" content="pandoc">
- <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
- <meta name="author" content="José Bollo">
- <meta name="author" content="Fulup Ar Foll">
- <title>The widgets</title>
- <style type="text/css">code{white-space: pre;}</style>
- <style type="text/css">
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-code > span.in { color: #60a0b0; font-weight: bold; font-style: italic; } /* Information */
- </style>
- <link rel="stylesheet" href="doc.css">
- <!--[if lt IE 9]>
- <script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv-printshiv.min.js"></script>
- <![endif]-->
-</head>
-<body>
-<header>
-<h1 class="title">The widgets</h1>
-<h2 class="author">José Bollo</h2>
-<h2 class="author">Fulup Ar Foll</h2>
-<h3 class="date">24 juin 2016</h3>
-</header>
-<nav id="TOC">
-<ul>
-<li><a href="#the-widgets">The widgets</a><ul>
-<li><a href="#the-widgets-1">The widgets</a><ul>
-<li><a href="#the-configuration-file-config.xml">The configuration file config.xml</a></li>
-<li><a href="#tools-for-managing-widgets">Tools for managing widgets</a></li>
-<li><a href="#signing-a-widget">Signing a widget</a></li>
-<li><a href="#packing-a-widget">Packing a widget</a></li>
-<li><a href="#getting-data-about-a-widget-file">Getting data about a widget file</a></li>
-</ul></li>
-<li><a href="#writing-a-widget">Writing a widget</a><ul>
-<li><a href="#what-kind-of-application">What kind of application?</a></li>
-<li><a href="#the-steps-for-writing-a-widget">The steps for writing a widget</a></li>
-</ul></li>
-<li><a href="#organization-of-directory-of-applications">Organization of directory of applications</a><ul>
-<li><a href="#directory-where-are-stored-applications">directory where are stored applications</a></li>
-<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>
-</ul></li>
-</ul>
-</nav>
-<h1 id="the-widgets">The widgets</h1>
-<h2 id="the-widgets-1">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>
-<p>In summary, <strong>widgets are ZIP files that can be signed and whose content is described by the file <config.xml></strong>.</p>
-<h3 id="the-configuration-file-config.xml">The configuration file config.xml</h3>
-<p>This is one of the important file of the widget. It fully describes the widget.</p>
-<p>Here is the example of the config file for the QML application SmartHome.</p>
-<div class="sourceCode"><pre class="sourceCode xml"><code class="sourceCode xml"><span class="kw">&lt;?xml</span> version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;<span class="kw">?&gt;</span>
-<span class="kw">&lt;widget</span><span class="ot"> xmlns=</span><span class="st">&quot;http://www.w3.org/ns/widgets&quot;</span><span class="ot"> id=</span><span class="st">&quot;smarthome&quot;</span><span class="ot"> version=</span><span class="st">&quot;0.1&quot;</span><span class="kw">&gt;</span>
- <span class="kw">&lt;name&gt;</span>SmartHome<span class="kw">&lt;/name&gt;</span>
- <span class="kw">&lt;icon</span><span class="ot"> src=</span><span class="st">&quot;smarthome.png&quot;</span><span class="kw">/&gt;</span>
- <span class="kw">&lt;content</span><span class="ot"> src=</span><span class="st">&quot;qml/smarthome/smarthome.qml&quot;</span><span class="ot"> type=</span><span class="st">&quot;text/vnd.qt.qml&quot;</span><span class="kw">/&gt;</span>
- <span class="kw">&lt;description&gt;</span>This is the Smarthome QML demo application. It shows some user interfaces for controlling an
-automated house. The user interface is completely done with QML.<span class="kw">&lt;/description&gt;</span>
- <span class="kw">&lt;author&gt;</span>Qt team<span class="kw">&lt;/author&gt;</span>
- <span class="kw">&lt;license&gt;</span>GPL<span class="kw">&lt;/license&gt;</span>
-<span class="kw">&lt;/widget&gt;</span></code></pre></div>
-<p>The most important items are:</p>
-<ul>
-<li><p><strong>&lt;widget id=&quot;......&quot;&gt;</strong>: gives the id of the widget. It must be unique.</p></li>
-<li><p><strong>&lt;widget version=&quot;......&quot;&gt;</strong>: gives the version of the widget</p></li>
-<li><p><strong>&lt;icon src=&quot;...&quot;&gt;</strong>: gives a path to the icon of the application (can be repeated with different sizes)</p></li>
-<li><p><strong>&lt;content src=&quot;...&quot; type=&quot;...&quot;&gt;</strong>: this indicates the entry point and its type. The types handled are set through the file /etc/afm/afm-launch.conf</p></li>
-</ul>
-<p>Further development will add handling of <feature> for requiring and providing permissions and services.</p>
-<h3 id="tools-for-managing-widgets">Tools for managing widgets</h3>
-<p>This project includes tools for managing widgets. These tools are:</p>
-<ul>
-<li><p><strong><em>wgtpkg-info</em></strong>: command line tool to display informations about a widget file.</p></li>
-<li><p><strong><em>wgtpkg-installer</em></strong>: command line tool to install a widget file.</p></li>
-<li><p><strong><em>wgtpkg-pack</em></strong>: command line tool to create a widget file from a widget directory.</p></li>
-<li><p><strong><em>wgtpkg-sign</em></strong>: command line tool to add a signature to a widget directory.</p></li>
-</ul>
-<p>For all these commands, a tiny help is available with options <strong>-h</strong> or <strong>--help</strong>.</p>
-<p>There is no tool for unpacking a widget. For doing such operation, you can use the command <strong>unzip</strong>.</p>
-<p>To list the files of a widget:</p>
-<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">unzip</span> -l WIDGET</code></pre></div>
-<p>To extract a widget in some directory:</p>
-<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">unzip</span> WIDGET -d DIRECTORY</code></pre></div>
-<p><em>Note that DIRECTORY will be created if needed</em>.</p>
-<h3 id="signing-a-widget">Signing a widget</h3>
-<p>To sign a widget, you need a private key and its certificate.</p>
-<p>The tool <strong>wgtpkg-sign</strong> creates or replace a signature file in the directory of the widget BEFORE its packaging.</p>
-<p>There are two types of signature files: author and distributor.</p>
-<p>Example 1: add an author signature</p>
-<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">wgtpkg-sign</span> -a -k me.key.pem -c me.cert.pem DIRECTORY</code></pre></div>
-<p>Example 2: add a distributor signature</p>
-<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">wgtpkg-sign</span> -k authority.key.pem -c authority.cert.pem DIRECTORY</code></pre></div>
-<h3 id="packing-a-widget">Packing a widget</h3>
-<p>This operation can be done using the command <strong>zip</strong> but we provide the tool <strong>wgtpkg-pack</strong> that may add checking.</p>
-<p>Example:</p>
-<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">wgtpkg-pack</span> DIRECTORY -o file.wgt</code></pre></div>
-<h3 id="getting-data-about-a-widget-file">Getting data about a widget file</h3>
-<p>The command <strong>wgtpkg-info</strong> opens a widget file, reads its <strong>config.xml</strong> file and displays its content in a human readable way.</p>
-<h2 id="writing-a-widget">Writing a widget</h2>
-<h3 id="what-kind-of-application">What kind of application?</h3>
-<p>The file <strong>/etc/afm/afm-launch.conf</strong> explain how to launch applications. (It is the current state that use afm-user-daemon. In a future, it may be replace by systemd features.)</p>
-<p>Currently the applications that can be run are:</p>
-<ul>
-<li><p>binary applications: their type is <strong><em>application/x-executable</em></strong></p></li>
-<li><p>HTML5 applications: their type is <strong><em>text/html</em></strong></p></li>
-<li><p>QML applications: their type is <strong><em>text/vnd.qt.qml</em></strong></p></li>
-</ul>
-<h3 id="the-steps-for-writing-a-widget">The steps for writing a widget</h3>
-<ol type="1">
-<li><p>make your application</p></li>
-<li><p>create its configuration file <strong>config.xml</strong></p></li>
-<li><p>sign it</p></li>
-<li><p>pack it</p></li>
-</ol>
-<p>Fairly easy, no?</p>
-<h2 id="organization-of-directory-of-applications">Organization of directory of applications</h2>
-<h3 id="directory-where-are-stored-applications">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: &quot;APPDIR&quot;.</p>
-<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>
-<h3 id="identity-of-installed-files">Identity of installed files</h3>
-<p>All files are installed as user &quot;afm&quot; and group &quot;afm&quot;. 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>
-<h3 id="labeling-the-directories-of-applications">labeling the directories of applications</h3>
-<p>The data of a user are in its directory and are labelled by the security-manager using the labels of the application.</p>
-</body>
-</html>