new: [dashboard] added a way to auto reload widgets

- has to be defined in the code of the widget

app/Controller/DashboardsController.php

@@ -139,16 +139,25 @@ class DashboardsController extends AppController
             $org_scope = $this->_isSiteAdmin() ? 0 : $this->Auth->user('org_id');
             $lookup_hash = hash('sha256', $value['widget'] . $value['config']);
             $data = $redis->get('misp:dashboard:' . $org_scope . ':' . $lookup_hash);
-            if (empty($data)) {
-                $cacheLifetime = isset($dashboardWidget->cacheLifetime) ? $dashboardWidget->cacheLifetime : 300;
+            if (!isset($dashboardWidget->cacheLifetime)) {
+                $dashboardWidget->cacheLifetime = false;
+            }
+            if (empty($dashboardWidget->cacheLifetime) || empty($data)) {
                 $data = $dashboardWidget->handler($this->Auth->user(), json_decode($value['config'], true));
-                $redis->set('misp:dashboard:' . $org_scope . ':' . $lookup_hash, json_encode(array('data' => $data)));
-                $redis->expire('misp:dashboard:' . $org_scope . ':' . $lookup_hash, $cacheLifetime);
+                if (!empty($dashboardWidget->cacheLifetime)) {
+                    $redis->set('misp:dashboard:' . $org_scope . ':' . $lookup_hash, json_encode(array('data' => $data)));
+                    $redis->expire('misp:dashboard:' . $org_scope . ':' . $lookup_hash, $dashboardWidget->cacheLifetime);
+                }
             } else {
                 $data = json_decode($data, true)['data'];
             }
+            $config = array(
+                'render' => $dashboardWidget->render,
+                'autoRefreshDelay' => empty($dashboardWidget->autoRefreshDelay) ? false : $dashboardWidget->autoRefreshDelay
+            );
             $this->set('data', $data);
-            $this->render('/Dashboards/Widgets/' . $dashboardWidget->render);
+            $this->set('config', $config);
+            $this->render('widget_loader');
         } else {
             throw new MethodNotAllowedException(__('This endpoint can only be reached via POST requests.'));
         }

app/Lib/Dashboard/MispAdminResourceWidget.php

@@ -8,7 +8,8 @@ class MispAdminResourceWidget
     public $height = 2;
     public $params = array();
     public $description = 'Basic widget showing some server statistics in regards to MISP.';
-    public $cacheLifetime = 5;
+    public $cacheLifetime = false;
+    public $autoRefreshDelay = 3;
 
 
 	public function handler($user, $options = array())

app/Lib/Dashboard/MispAdminWorkerWidget.php

@@ -8,7 +8,8 @@ class MispAdminWorkerWidget
     public $height = 2;
     public $params = array();
     public $description = 'Basic widget showing some server statistics in regards to MISP.';
-    public $cacheLifetime = 5;
+    public $cacheLifetime = false;
+    public $autoRefreshDelay = 5;
 
 
 	public function handler($user, $options = array())
@@ -23,11 +24,13 @@ class MispAdminWorkerWidget
             }
             $total = 0;
             $alive = 0;
-            foreach ($queue['workers'] as $worker) {
-                if ($worker['alive']) {
-                    $alive += 1;
+            if (!empty($queue['workers'])) {
+                foreach ($queue['workers'] as $worker) {
+                    if ($worker['alive']) {
+                        $alive += 1;
+                    }
+                    $total += 1;
                 }
-                $total += 1;
             }
             $colour = 'green';
             if ($alive == 0) {

app/Model/Dashboard.php

@@ -80,7 +80,8 @@ class Dashboard extends AppModel
             'description' => empty($widgetClass->description) ?  $widgetClass->title : $widgetClass->description,
             'height' => empty($widgetClass->height) ? 1 : $widgetClass->height,
             'width' => empty($widgetClass->width) ? 1 : $widgetClass->width,
-            'placeholder' => empty($widgetClass->placeholder) ? '' : $widgetClass->placeholder
+            'placeholder' => empty($widgetClass->placeholder) ? '' : $widgetClass->placeholder,
+            'autoRefreshDelay' => empty($widgetClass->autoRefreshDelay) ? false : $widgetClass->autoRefreshDelay,
         );
         return $widget;
     }

app/View/Dashboards/widget_loader.ctp

@@ -0,0 +1,21 @@
+<?php
+    $randomId = rand();
+?>
+<div id="widgetContentInner<?= $randomId ?>">
+    <?php
+        echo $this->element('/dashboard/Widgets/' . $config['render']);
+    ?>
+</div>
+<script type="text/javascript">
+    $(document).ready(function() {
+        <?php
+            if ($config['autoRefreshDelay']) {
+                echo sprintf(
+                    'setTimeout( function(){ updateDashboardWidget($("#widgetContentInner%s").parent().parent().parent())}, %s);',
+                    $randomId,
+                    $config['autoRefreshDelay'] . '000'
+                );
+            }
+        ?>
+    });
+</script>

app/View/Elements/dashboard/Widgets/MultiBarChart.ctp

@@ -0,0 +1,32 @@
+<table style="border-spacing:0px;">
+<?php
+    if (!empty($data['logarithmic'])) {
+        $max = max($data['logarithmic']);
+    } else {
+        $max = max($data['data']);
+    }
+    foreach ($data['data'] as $entry => $count) {
+        $value = $count;
+        if (!empty($data['logarithmic'])) {
+            $value = $data['logarithmic'][$entry];
+        }
+        echo sprintf(
+            '<tr><td style="%s">%s</td><td style="%s">%s</td></tr>',
+            'text-align:right;width:33%;',
+            h($entry),
+            'width:100%',
+            sprintf(
+                '<div title="%s" style="%s">%s</div>',
+                h($entry) . ': ' . h($count),
+                sprintf(
+                    'background-color:%s; width:%s; color:white; text-align:center;',
+                    (empty($data['colours'][$entry]) ? '#0088cc' : h($data['colours'][$entry])),
+                    100 * h($value) / $max . '%;'
+                ),
+                h($count)
+            ),
+            '&nbsp;'
+        );
+    }
+?>
+</table>