Add class Tls

refs #3016

library/Icinga/Authentication/Tls.php

@@ -0,0 +1,40 @@
+<?php
+/* Icinga Web 2 | (c) 2017 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Authentication;
+
+use Icinga\File\Storage\LocalFileStorage;
+
+class Tls
+{
+    /**
+     * Get the absolute local filesystem path of the file with the certificates of the given TLS root CA collection
+     *
+     * The consumer of this interface can rely on the file's existence
+     * if they make use of {@link Icinga\Application\Hook\TlsRootCACertificateCollectionHook} respectively.
+     *
+     * @param   string  $name
+     *
+     * @return  string
+     */
+    public static function rootCaCertsFile($name)
+    {
+        return LocalFileStorage::common('tls/rootcacollections')->resolvePath(bin2hex($name) . '.pem');
+    }
+
+    /**
+     * Get the absolute local filesystem path of the file with the certificate
+     * and the private key of the given TLS client identity
+     *
+     * The consumer of this interface can rely on the file's existence
+     * if they make use of {@link Icinga\Application\Hook\TlsClientIdentityHook} respectively.
+     *
+     * @param   string  $name
+     *
+     * @return  string
+     */
+    public static function clientIdsFile($name)
+    {
+        return LocalFileStorage::common('tls/clientidentities')->resolvePath(bin2hex($name) . '.pem');
+    }
+}