Introduce implementation for hook X509/Sni

modules/monitoring/library/Monitoring/ProvidedHook/X509/Sni.php

@@ -0,0 +1,35 @@
+<?php
+/* Icinga Web 2 | (c) 2019 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Module\Monitoring\ProvidedHook\X509;
+
+use Icinga\Data\Filter\Filter;
+use Icinga\Module\Monitoring\Backend\MonitoringBackend;
+use Icinga\Module\X509\Hook\SniHook;
+
+class Sni extends SniHook
+{
+    public function getHosts(Filter $filter = null)
+    {
+        $hosts = MonitoringBackend::instance()
+            ->select()
+            ->from('hoststatus', [
+                'host_name',
+                'host_address',
+                'host_address6'
+            ]);
+        if ($filter !== null) {
+            $hosts->applyFilter($filter);
+        }
+
+        foreach ($hosts as $host) {
+            if (! empty($host->host_address)) {
+                yield $host->host_address => $host->host_name;
+            }
+
+            if (! empty($host->host_address6)) {
+                yield $host->host_address6 => $host->host_name;
+            }
+        }
+    }
+}

modules/monitoring/run.php

@@ -4,3 +4,4 @@
 /** @var $this \Icinga\Application\Modules\Module */
 
 $this->provideHook('ApplicationState');
+$this->provideHook('X509/Sni');