--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/calendar/drivers/ldap/resources_driver_ldap.php	Sat Jan 13 08:56:12 2018 -0500
@@ -0,0 +1,150 @@
+<?php
+
+/**
+ * LDAP-based resource directory class using rcube_ldap functionality
+ *
+ * @author Thomas Bruederli <bruederli@kolabsys.com>
+ *
+ * Copyright (C) 2014, Kolab Systems AG <contact@kolabsys.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * LDAP-based resource directory implementation
+ */
+class resources_driver_ldap extends resources_driver
+{
+    private $rc;
+    private $ldap;
+
+    /**
+     * Default constructor
+     */
+    function __construct($cal)
+    {
+        $this->cal = $cal;
+        $this->rc = $cal->rc;
+    }
+
+    /**
+     * Fetch resource objects to be displayed for booking
+     *
+     * @param  string  Search query (optional)
+     * @return array  List of resource records available for booking
+     */
+    public function load_resources($query = null, $num = 5000)
+    {
+      if (!($ldap = $this->connect())) {
+        return array();
+      }
+
+      // TODO: apply paging
+      $ldap->set_pagesize($num);
+
+      if (isset($query)) {
+        $results = $ldap->search('*', $query, 0, true, true);
+      }
+      else {
+        $results = $ldap->list_records();
+      }
+
+      if ($results instanceof ArrayAccess) {
+        foreach ($results as $i => $rec) {
+          $results[$i] = $this->decode_resource($rec);
+        }
+      }
+
+      return $results;
+    }
+
+    /**
+     * Return properties of a single resource
+     *
+     * @param string  Unique resource identifier
+     * @return array Resource object as hash array
+     */
+    public function get_resource($dn)
+    {
+      $rec = null;
+
+      if ($ldap = $this->connect()) {
+        $rec = $ldap->get_record(rcube_ldap::dn_encode($dn), true);
+
+        if (!empty($rec)) {
+          $rec = $this->decode_resource($rec);
+        }
+      }
+
+      return $rec;
+    }
+
+    /**
+     * Return properties of a resource owner
+     *
+     * @param string  Owner identifier
+     * @return array  Resource object as hash array
+     */
+    public function get_resource_owner($dn)
+    {
+      $owner = null;
+
+      if ($ldap = $this->connect()) {
+        $owner = $ldap->get_record(rcube_ldap::dn_encode($dn), true);
+        $owner['ID'] = rcube_ldap::dn_decode($owner['ID']);
+        unset($owner['_raw_attrib'], $owner['_type']);
+      }
+
+      return $owner;
+    }
+
+    /**
+     * Extract JSON-serialized attributes
+     */
+    private function decode_resource($rec)
+    {
+      $rec['ID'] = rcube_ldap::dn_decode($rec['ID']);
+
+      if (is_array($rec['attributes']) && $rec['attributes'][0]) {
+        $attributes = array();
+
+        foreach ($rec['attributes'] as $sattr) {
+          $attr = @json_decode($sattr, true);
+          $attributes += $attr;
+        }
+
+        $rec['attributes'] = $attributes;
+      }
+
+      // force $rec['members'] to be an array
+      if (!empty($rec['members']) && !is_array($rec['members'])) {
+        $rec['members'] = array($rec['members']);
+      }
+
+      // remove unused cruft
+      unset($rec['_raw_attrib']);
+
+      return $rec;
+    }
+
+    private function connect()
+    {
+      if (!isset($this->ldap)) {
+        $this->ldap = new rcube_ldap($this->rc->config->get('calendar_resources_directory'), true);
+      }
+
+      return $this->ldap->ready ? $this->ldap : null;
+    }
+
+}
\ No newline at end of file