version 0.1

freifunk-versions.php

@@ -0,0 +1,57 @@
+<?php
+/*
+Plugin Name: Freifunk Hamburg Firmware List Shortcode
+Plugin URI: http://mschuette.name/
+Description: Defines shortcodes to display Freifunk Hamburg Firmware versions
+Version: 0.1
+Author: Martin Schuette
+Author URI: http://mschuette.name/
+Licence: 2-clause BSD
+*/
+
+define('FF_HH_STABLE_BASEDIR', 'http://gw09.hamburg.freifunk.net/stable/sysupgrade/');
+define('FF_HH_CACHETIME', 15);
+
+/* gets metadata from URL, handles caching */
+function ff_hh_getmanifest () {
+    // Caching
+    if ( false === ( $manifest = get_transient( "ff_hh_manifest" ) ) ) {
+        $manifest = array();
+        $input  = wp_remote_retrieve_body( wp_remote_get(FF_HH_STABLE_BASEDIR . 'manifest') );
+        foreach ( explode("\n", $input) as $line ) {
+            $ret = sscanf($line, '%s %s %s %s', $hw, $ver, $hash, $filename);
+            if ($ret === 4)
+                $manifest[] = compact('hw', 'ver', 'filename');
+        }
+
+        $cachetime = FF_HH_CACHETIME * MINUTE_IN_SECONDS;
+        set_transient( "ff_hh_manifest", $manifest, $cachetime );
+    }
+    return $manifest;
+}
+
+if ( ! shortcode_exists( 'ff_hh_versions' ) ) {
+    add_shortcode( 'ff_hh_versions',    'ff_hh_shortcode_handler');
+}
+// Example:
+// [ff_hh_versions]
+function ff_hh_shortcode_handler( $atts, $content, $name ) {
+    $manifest = ff_hh_getmanifest();
+    $outstr = "<div class=\"ff $name\">";
+    $outstr .= '<table><tr><th>Modell</th><th>Stable</th></tr>';
+
+    foreach ($manifest as $line) {
+        $outstr .= sprintf('<tr><td>%s</td><td><a href="%s%s">%s</a></td></tr>', $line['hw'], FF_HH_STABLE_BASEDIR, $line['filename'], $line['ver']);
+    }
+    
+    $outstr .= '</table>';
+    //$outstr .= '<pre>'.print_r($manifest, true).'</pre>';
+    $outstr .= '</div>';
+    return $outstr;
+}
+
+register_uninstall_hook( __FILE__, 'ff_hh_uninstall_hook' );
+function ff_hh_uninstall_hook() {
+    delete_option( 'ff_hh_manifest' );
+}
+