1 files changed, 120 insertions, 0 deletions
diff --git a/vendor/sabre/dav/lib/CalDAV/Subscriptions/Plugin.php b/vendor/sabre/dav/lib/CalDAV/Subscriptions/Plugin.php
new file mode 100644
index 000000000..7abbfb1f9
--- /dev/null
+++ b/vendor/sabre/dav/lib/CalDAV/Subscriptions/Plugin.php
@@ -0,0 +1,120 @@
+<?php
+
+namespace Sabre\CalDAV\Subscriptions;
+
+use Sabre\DAV\INode;
+use Sabre\DAV\PropFind;
+use Sabre\DAV\ServerPlugin;
+use Sabre\DAV\Server;
+
+/**
+ * This plugin adds calendar-subscription support to your CalDAV server.
+ *
+ * Some clients support 'managed subscriptions' server-side. This is basically
+ * a list of subscription urls a user is using.
+ *
+ * @copyright Copyright (C) fruux GmbH (https://fruux.com/)
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class Plugin extends ServerPlugin {
+
+    /**
+     * This initializes the plugin.
+     *
+     * This function is called by Sabre\DAV\Server, after
+     * addPlugin is called.
+     *
+     * This method should set up the required event subscriptions.
+     *
+     * @param Server $server
+     * @return void
+     */
+    function initialize(Server $server) {
+
+        $server->resourceTypeMapping['Sabre\\CalDAV\\Subscriptions\\ISubscription'] =
+            '{http://calendarserver.org/ns/}subscribed';
+
+        $server->xml->elementMap['{http://calendarserver.org/ns/}source'] =
+            'Sabre\\DAV\\Xml\\Property\\Href';
+
+        $server->on('propFind', [$this, 'propFind'], 150);
+
+    }
+
+    /**
+     * This method should return a list of server-features.
+     *
+     * This is for example 'versioning' and is added to the DAV: header
+     * in an OPTIONS response.
+     *
+     * @return array
+     */
+    function getFeatures() {
+
+        return ['calendarserver-subscribed'];
+
+    }
+
+    /**
+     * Triggered after properties have been fetched.
+     *
+     * @param PropFind $propFind
+     * @param INode $node
+     * @return void
+     */
+    function propFind(PropFind $propFind, INode $node) {
+
+        // There's a bunch of properties that must appear as a self-closing
+        // xml-element. This event handler ensures that this will be the case.
+        $props = [
+            '{http://calendarserver.org/ns/}subscribed-strip-alarms',
+            '{http://calendarserver.org/ns/}subscribed-strip-attachments',
+            '{http://calendarserver.org/ns/}subscribed-strip-todos',
+        ];
+
+        foreach ($props as $prop) {
+
+            if ($propFind->getStatus($prop) === 200) {
+                $propFind->set($prop, '', 200);
+            }
+
+        }
+
+    }
+
+    /**
+     * Returns a plugin name.
+     *
+     * Using this name other plugins will be able to access other plugins
+     * using \Sabre\DAV\Server::getPlugin
+     *
+     * @return string
+     */
+    function getPluginName() {
+
+        return 'subscriptions';
+
+    }
+
+    /**
+     * Returns a bunch of meta-data about the plugin.
+     *
+     * Providing this information is optional, and is mainly displayed by the
+     * Browser plugin.
+     *
+     * The description key in the returned array may contain html and will not
+     * be sanitized.
+     *
+     * @return array
+     */
+    function getPluginInfo() {
+
+        return [
+            'name'        => $this->getPluginName(),
+            'description' => 'This plugin allows users to store iCalendar subscriptions in their calendar-home.',
+            'link'        => null,
+        ];
+
+    }
+}