diff --git a/dokuwiki/common.php b/dokuwiki/common.php
new file mode 100644
index 0000000..7d474fb
--- /dev/null
+++ b/dokuwiki/common.php
@@ -0,0 +1,47 @@
+<?php
+  /**
+   * Plugin HackerBase: Common functions
+   * 
+   * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
+   * @author     Dominik Pantůček <dominik.pantucek@trustica.cz>
+   */
+
+  // must be run within DokuWiki
+if(!defined('DOKU_INC')) die();
+
+function hackerbase_spaceapi_html_snippet($spaceapi_status_json) {
+  $str = file_get_contents($spaceapi_status_json);
+  /** @var Doku_Renderer_xhtml $renderer */
+  $status = "UNKNOWN";
+  if ($str == FALSE) {
+    $status = "ERROR:FILE";
+  } else {
+    $json = json_decode($str, true);
+    if ($json == NULL) {
+      $status = "ERROR:JSON";
+    } else {
+      $opened = $json['state']['open'];
+      $lastchange = $json['state']['lastchange'];
+      $myfile = __FILE__;
+      $mydir = dirname($myfile);
+      $mydirname = basename($mydir);
+      $assetsdir = DOKU_BASE . "lib/plugins/" . $mydirname . "/assets";
+      if ($opened == TRUE) {
+	$status =
+	  '<p><img src="' . $assetsdir . '/open-sun.png"></p>' .
+	  '<h3>OPEN</h3>';
+      } elseif ($opened == FALSE) {
+	$status =
+	  '<p><img src="' . $assetsdir . '/closed-moon.png"></p>' .
+	  '<h3>CLOSED</h3>';
+      } else {
+	$status = "ERROR:DECODE";
+      }
+      if ($lastchange) {
+	$str_date = strftime('%Y-%m-%d %H:%M', $lastchange);
+	$status .= '<p>Last changed: ' . $str_date . '</p>';
+      }
+    }
+  }
+  return $status;
+}