Merge branch 'main' into issue-3911issue-3911

1 files changed, 68 insertions, 0 deletions

diff --git a/lib/phplib/CT_Cache.php b/lib/phplib/CT_Cache.php
new file mode 100644
index 0000000..d4eccfa
--- /dev/null
+++ b/lib/phplib/CT_Cache.php
@@ -0,0 +1,68 @@
+<?php
+
+## Copyright (c) 2011 Elmar Ludwig, University of Osnabrueck
+##
+## PHPLIB Data Storage Container using Stud.IP cache
+## for use with Stud.IP and cache only!
+
+class CT_Cache
+{
+    protected const CACHE_KEY_PREFIX = 'session_data';
+    protected const SESSION_LIFETIME = 7200;
+
+    private $cache;
+
+    public function ac_start()
+    {
+        $this->cache = \Studip\Cache\Factory::getCache();
+    }
+
+    public function ac_get_lock()
+    {
+    }
+
+    public function ac_release_lock()
+    {
+    }
+
+    public function ac_newid($str, $name = null)
+    {
+        return $this->ac_get_value($str) === false ? $str : false;
+    }
+
+    public function ac_store($id, $name, $str)
+    {
+        $cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
+        return $this->cache->write($cache_key, $str, ini_get('session.gc_maxlifetime') ?: self::SESSION_LIFETIME);
+    }
+
+    public function ac_delete($id, $name = null)
+    {
+        $cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
+        $this->cache->expire($cache_key);
+    }
+
+    public function ac_gc($gc_time, $name = null)
+    {
+    }
+
+    public function ac_halt($s)
+    {
+        echo "<b>$s</b>";
+        exit;
+    }
+
+    public function ac_get_value($id, $name = null)
+    {
+        $cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
+        return $this->cache->read($cache_key);
+    }
+
+    public function ac_get_changed($id, $name = null)
+    {
+    }
+
+    public function ac_set_changed($id, $name, $timestamp)
+    {
+    }
+}