initial sabre upgrade (needs lots of work - to wit: authentication, redo the browser interface, and rework event export/import)

8 files changed, 0 insertions, 1195 deletions

diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Collection.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Collection.php
deleted file mode 100644
index 028b00d87..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Collection.php
+++ /dev/null
@@ -1,173 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications;
-
-use Sabre\DAV;
-use Sabre\CalDAV;
-use Sabre\DAVACL;
-
-/**
- * This node represents a list of notifications.
- *
- * It provides no additional functionality, but you must implement this
- * interface to allow the Notifications plugin to mark the collection
- * as a notifications collection.
- *
- * This collection should only return Sabre\CalDAV\Notifications\INode nodes as
- * its children.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Collection extends DAV\Collection implements ICollection, DAVACL\IACL {
-
-    /**
-     * The notification backend
-     *
-     * @var Sabre\CalDAV\Backend\NotificationSupport
-     */
-    protected $caldavBackend;
-
-    /**
-     * Principal uri
-     *
-     * @var string
-     */
-    protected $principalUri;
-
-    /**
-     * Constructor
-     *
-     * @param CalDAV\Backend\NotificationSupport $caldavBackend
-     * @param string $principalUri
-     */
-    public function __construct(CalDAV\Backend\NotificationSupport $caldavBackend, $principalUri) {
-
-        $this->caldavBackend = $caldavBackend;
-        $this->principalUri = $principalUri;
-
-    }
-
-    /**
-     * Returns all notifications for a principal
-     *
-     * @return array
-     */
-    public function getChildren() {
-
-        $children = array();
-        $notifications = $this->caldavBackend->getNotificationsForPrincipal($this->principalUri);
-
-        foreach($notifications as $notification) {
-
-            $children[] = new Node(
-                $this->caldavBackend,
-                $this->principalUri,
-                $notification
-            );
-        }
-
-        return $children;
-
-    }
-
-    /**
-     * Returns the name of this object
-     *
-     * @return string
-     */
-    public function getName() {
-
-        return 'notifications';
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->principalUri;
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'principal' => $this->getOwner(),
-                'privilege' => '{DAV:}read',
-                'protected' => true,
-            ),
-            array(
-                'principal' => $this->getOwner(),
-                'privilege' => '{DAV:}write',
-                'protected' => true,
-            )
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's as an array argument.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new DAV\Exception\NotImplemented('Updating ACLs is not implemented here');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre\DAVACL\Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        return null;
-
-    }
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/ICollection.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/ICollection.php
deleted file mode 100644
index 26e13b211..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/ICollection.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications;
-
-use Sabre\DAV;
-
-/**
- * This node represents a list of notifications.
- *
- * It provides no additional functionality, but you must implement this
- * interface to allow the Notifications plugin to mark the collection
- * as a notifications collection.
- *
- * This collection should only return Sabre\CalDAV\Notifications\INode nodes as
- * its children.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-interface ICollection extends DAV\ICollection {
-
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INode.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INode.php
deleted file mode 100644
index cd7fc5798..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INode.php
+++ /dev/null
@@ -1,38 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications;
-
-/**
- * This node represents a single notification.
- *
- * The signature is mostly identical to that of Sabre\DAV\IFile, but the get() method
- * MUST return an xml document that matches the requirements of the
- * 'caldav-notifications.txt' spec.
- *
- * For a complete example, check out the Notification class, which contains
- * some helper functions.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-interface INode {
-
-    /**
-     * This method must return an xml element, using the
-     * Sabre\CalDAV\Notifications\INotificationType classes.
-     *
-     * @return INotificationType
-     */
-    function getNotificationType();
-
-    /**
-     * Returns the etag for the notification.
-     *
-     * The etag must be surrounded by litteral double-quotes.
-     *
-     * @return string
-     */
-    function getETag();
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INotificationType.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INotificationType.php
deleted file mode 100644
index b646399b9..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/INotificationType.php
+++ /dev/null
@@ -1,44 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications;
-use Sabre\DAV;
-
-/**
- * This interface reflects a single notification type.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-interface INotificationType extends DAV\PropertyInterface {
-
-    /**
-     * This method serializes the entire notification, as it is used in the
-     * response body.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    function serializeBody(DAV\Server $server, \DOMElement $node);
-
-    /**
-     * Returns a unique id for this notification
-     *
-     * This is just the base url. This should generally be some kind of unique
-     * id.
-     *
-     * @return string
-     */
-    function getId();
-
-    /**
-     * Returns the ETag for this notification.
-     *
-     * The ETag must be surrounded by literal double-quotes.
-     *
-     * @return string
-     */
-    function getETag();
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Node.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Node.php
deleted file mode 100644
index 6367e9388..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Node.php
+++ /dev/null
@@ -1,192 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications;
-
-use Sabre\DAV;
-use Sabre\CalDAV;
-use Sabre\DAVACL;
-
-/**
- * This node represents a single notification.
- *
- * The signature is mostly identical to that of Sabre\DAV\IFile, but the get() method
- * MUST return an xml document that matches the requirements of the
- * 'caldav-notifications.txt' spec.
-
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Node extends DAV\File implements INode, DAVACL\IACL {
-
-    /**
-     * The notification backend
-     *
-     * @var Sabre\CalDAV\Backend\NotificationSupport
-     */
-    protected $caldavBackend;
-
-    /**
-     * The actual notification
-     *
-     * @var Sabre\CalDAV\Notifications\INotificationType
-     */
-    protected $notification;
-
-    /**
-     * Owner principal of the notification
-     *
-     * @var string
-     */
-    protected $principalUri;
-
-    /**
-     * Constructor
-     *
-     * @param CalDAV\Backend\NotificationSupport $caldavBackend
-     * @param string $principalUri
-     * @param CalDAV\Notifications\INotificationType $notification
-     */
-    public function __construct(CalDAV\Backend\NotificationSupport $caldavBackend, $principalUri, INotificationType $notification) {
-
-        $this->caldavBackend = $caldavBackend;
-        $this->principalUri = $principalUri;
-        $this->notification = $notification;
-
-    }
-
-    /**
-     * Returns the path name for this notification
-     *
-     * @return id
-     */
-    public function getName() {
-
-        return $this->notification->getId() . '.xml';
-
-    }
-
-    /**
-     * Returns the etag for the notification.
-     *
-     * The etag must be surrounded by litteral double-quotes.
-     *
-     * @return string
-     */
-    public function getETag() {
-
-        return $this->notification->getETag();
-
-    }
-
-    /**
-     * This method must return an xml element, using the
-     * Sabre\CalDAV\Notifications\INotificationType classes.
-     *
-     * @return INotificationType
-     */
-    public function getNotificationType() {
-
-        return $this->notification;
-
-    }
-
-    /**
-     * Deletes this notification
-     *
-     * @return void
-     */
-    public function delete() {
-
-        $this->caldavBackend->deleteNotification($this->getOwner(), $this->notification);
-
-    }
-
-    /**
-     * Returns the owner principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getOwner() {
-
-        return $this->principalUri;
-
-    }
-
-    /**
-     * Returns a group principal
-     *
-     * This must be a url to a principal, or null if there's no owner
-     *
-     * @return string|null
-     */
-    public function getGroup() {
-
-        return null;
-
-    }
-
-    /**
-     * Returns a list of ACE's for this node.
-     *
-     * Each ACE has the following properties:
-     *   * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
-     *     currently the only supported privileges
-     *   * 'principal', a url to the principal who owns the node
-     *   * 'protected' (optional), indicating that this ACE is not allowed to
-     *      be updated.
-     *
-     * @return array
-     */
-    public function getACL() {
-
-        return array(
-            array(
-                'principal' => $this->getOwner(),
-                'privilege' => '{DAV:}read',
-                'protected' => true,
-            ),
-            array(
-                'principal' => $this->getOwner(),
-                'privilege' => '{DAV:}write',
-                'protected' => true,
-            )
-        );
-
-    }
-
-    /**
-     * Updates the ACL
-     *
-     * This method will receive a list of new ACE's as an array argument.
-     *
-     * @param array $acl
-     * @return void
-     */
-    public function setACL(array $acl) {
-
-        throw new DAV\Exception\NotImplemented('Updating ACLs is not implemented here');
-
-    }
-
-    /**
-     * Returns the list of supported privileges for this node.
-     *
-     * The returned data structure is a list of nested privileges.
-     * See Sabre\DAVACL\Plugin::getDefaultSupportedPrivilegeSet for a simple
-     * standard structure.
-     *
-     * If null is returned from this method, the default privilege set is used,
-     * which is fine for most common usecases.
-     *
-     * @return array|null
-     */
-    public function getSupportedPrivilegeSet() {
-
-        return null;
-
-    }
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/Invite.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/Invite.php
deleted file mode 100644
index 8d6974d45..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/Invite.php
+++ /dev/null
@@ -1,324 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications\Notification;
-
-use Sabre\CalDAV\SharingPlugin as SharingPlugin;
-use Sabre\DAV;
-use Sabre\CalDAV;
-
-/**
- * This class represents the cs:invite-notification notification element.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class Invite extends DAV\Property implements CalDAV\Notifications\INotificationType {
-
-    /**
-     * A unique id for the message
-     *
-     * @var string
-     */
-    protected $id;
-
-    /**
-     * Timestamp of the notification
-     *
-     * @var DateTime
-     */
-    protected $dtStamp;
-
-    /**
-     * A url to the recipient of the notification. This can be an email
-     * address (mailto:), or a principal url.
-     *
-     * @var string
-     */
-    protected $href;
-
-    /**
-     * The type of message, see the SharingPlugin::STATUS_* constants.
-     *
-     * @var int
-     */
-    protected $type;
-
-    /**
-     * True if access to a calendar is read-only.
-     *
-     * @var bool
-     */
-    protected $readOnly;
-
-    /**
-     * A url to the shared calendar.
-     *
-     * @var string
-     */
-    protected $hostUrl;
-
-    /**
-     * Url to the sharer of the calendar
-     *
-     * @var string
-     */
-    protected $organizer;
-
-    /**
-     * The name of the sharer.
-     *
-     * @var string
-     */
-    protected $commonName;
-
-    /**
-     * The name of the sharer.
-     *
-     * @var string
-     */
-    protected $firstName;
-
-    /**
-     * The name of the sharer.
-     *
-     * @var string
-     */
-    protected $lastName;
-
-    /**
-     * A description of the share request
-     *
-     * @var string
-     */
-    protected $summary;
-
-    /**
-     * The Etag for the notification
-     *
-     * @var string
-     */
-    protected $etag;
-
-    /**
-     * The list of supported components
-     *
-     * @var Sabre\CalDAV\Property\SupportedCalendarComponentSet
-     */
-    protected $supportedComponents;
-
-    /**
-     * Creates the Invite notification.
-     *
-     * This constructor receives an array with the following elements:
-     *
-     *   * id           - A unique id
-     *   * etag         - The etag
-     *   * dtStamp      - A DateTime object with a timestamp for the notification.
-     *   * type         - The type of notification, see SharingPlugin::STATUS_*
-     *                    constants for details.
-     *   * readOnly     - This must be set to true, if this is an invite for
-     *                    read-only access to a calendar.
-     *   * hostUrl      - A url to the shared calendar.
-     *   * organizer    - Url to the sharer principal.
-     *   * commonName   - The real name of the sharer (optional).
-     *   * firstName    - The first name of the sharer (optional).
-     *   * lastName     - The last name of the sharer (optional).
-     *   * summary      - Description of the share, can be the same as the
-     *                    calendar, but may also be modified (optional).
-     *   * supportedComponents - An instance of
-     *                    Sabre\CalDAV\Property\SupportedCalendarComponentSet.
-     *                    This allows the client to determine which components
-     *                    will be supported in the shared calendar. This is
-     *                    also optional.
-     *
-     * @param array $values All the options
-     */
-    public function __construct(array $values) {
-
-        $required = array(
-            'id',
-            'etag',
-            'href',
-            'dtStamp',
-            'type',
-            'readOnly',
-            'hostUrl',
-            'organizer',
-        );
-        foreach($required as $item) {
-            if (!isset($values[$item])) {
-                throw new \InvalidArgumentException($item . ' is a required constructor option');
-            }
-        }
-
-        foreach($values as $key=>$value) {
-            if (!property_exists($this, $key)) {
-                throw new \InvalidArgumentException('Unknown option: ' . $key);
-            }
-            $this->$key = $value;
-        }
-
-    }
-
-    /**
-     * Serializes the notification as a single property.
-     *
-     * You should usually just encode the single top-level element of the
-     * notification.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serialize(DAV\Server $server, \DOMElement $node) {
-
-        $prop = $node->ownerDocument->createElement('cs:invite-notification');
-        $node->appendChild($prop);
-
-    }
-
-    /**
-     * This method serializes the entire notification, as it is used in the
-     * response body.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serializeBody(DAV\Server $server, \DOMElement $node) {
-
-        $doc = $node->ownerDocument;
-
-        $dt = $doc->createElement('cs:dtstamp');
-        $this->dtStamp->setTimezone(new \DateTimezone('GMT'));
-        $dt->appendChild($doc->createTextNode($this->dtStamp->format('Ymd\\THis\\Z')));
-        $node->appendChild($dt);
-
-        $prop = $doc->createElement('cs:invite-notification');
-        $node->appendChild($prop);
-
-        $uid = $doc->createElement('cs:uid');
-        $uid->appendChild( $doc->createTextNode($this->id) );
-        $prop->appendChild($uid);
-
-        $href = $doc->createElement('d:href');
-        $href->appendChild( $doc->createTextNode( $this->href ) );
-        $prop->appendChild($href);
-
-        $nodeName = null;
-        switch($this->type) {
-
-            case SharingPlugin::STATUS_ACCEPTED :
-                $nodeName = 'cs:invite-accepted';
-                break;
-            case SharingPlugin::STATUS_DECLINED :
-                $nodeName = 'cs:invite-declined';
-                break;
-            case SharingPlugin::STATUS_DELETED :
-                $nodeName = 'cs:invite-deleted';
-                break;
-            case SharingPlugin::STATUS_NORESPONSE :
-                $nodeName = 'cs:invite-noresponse';
-                break;
-
-        }
-        $prop->appendChild(
-            $doc->createElement($nodeName)
-        );
-        $hostHref = $doc->createElement('d:href', $server->getBaseUri() . $this->hostUrl);
-        $hostUrl  = $doc->createElement('cs:hosturl');
-        $hostUrl->appendChild($hostHref);
-        $prop->appendChild($hostUrl);
-
-        $access = $doc->createElement('cs:access');
-        if ($this->readOnly) {
-            $access->appendChild($doc->createElement('cs:read'));
-        } else {
-            $access->appendChild($doc->createElement('cs:read-write'));
-        }
-        $prop->appendChild($access);
-
-        $organizerUrl  = $doc->createElement('cs:organizer');
-        // If the organizer contains a 'mailto:' part, it means it should be
-        // treated as absolute.
-        if (strtolower(substr($this->organizer,0,7))==='mailto:') {
-            $organizerHref = new DAV\Property\Href($this->organizer, false);
-        } else {
-            $organizerHref = new DAV\Property\Href($this->organizer, true);
-        }
-        $organizerHref->serialize($server, $organizerUrl);
-
-        if ($this->commonName) {
-            $commonName = $doc->createElement('cs:common-name');
-            $commonName->appendChild($doc->createTextNode($this->commonName));
-            $organizerUrl->appendChild($commonName);
-
-            $commonNameOld = $doc->createElement('cs:organizer-cn');
-            $commonNameOld->appendChild($doc->createTextNode($this->commonName));
-            $prop->appendChild($commonNameOld);
-
-        }
-        if ($this->firstName) {
-            $firstName = $doc->createElement('cs:first-name');
-            $firstName->appendChild($doc->createTextNode($this->firstName));
-            $organizerUrl->appendChild($firstName);
-
-            $firstNameOld = $doc->createElement('cs:organizer-first');
-            $firstNameOld->appendChild($doc->createTextNode($this->firstName));
-            $prop->appendChild($firstNameOld);
-        }
-        if ($this->lastName) {
-            $lastName = $doc->createElement('cs:last-name');
-            $lastName->appendChild($doc->createTextNode($this->lastName));
-            $organizerUrl->appendChild($lastName);
-
-            $lastNameOld = $doc->createElement('cs:organizer-last');
-            $lastNameOld->appendChild($doc->createTextNode($this->lastName));
-            $prop->appendChild($lastNameOld);
-        }
-        $prop->appendChild($organizerUrl);
-
-        if ($this->summary) {
-            $summary = $doc->createElement('cs:summary');
-            $summary->appendChild($doc->createTextNode($this->summary));
-            $prop->appendChild($summary);
-        }
-        if ($this->supportedComponents) {
-
-            $xcomp = $doc->createElement('cal:supported-calendar-component-set');
-            $this->supportedComponents->serialize($server, $xcomp);
-            $prop->appendChild($xcomp);
-
-        }
-
-    }
-
-    /**
-     * Returns a unique id for this notification
-     *
-     * This is just the base url. This should generally be some kind of unique
-     * id.
-     *
-     * @return string
-     */
-    public function getId() {
-
-        return $this->id;
-
-    }
-
-    /**
-     * Returns the ETag for this notification.
-     *
-     * The ETag must be surrounded by literal double-quotes.
-     *
-     * @return string
-     */
-    public function getETag() {
-
-        return $this->etag;
-
-    }
-
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/InviteReply.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/InviteReply.php
deleted file mode 100644
index e40751346..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/InviteReply.php
+++ /dev/null
@@ -1,218 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications\Notification;
-
-use Sabre\CalDAV\SharingPlugin as SharingPlugin;
-use Sabre\DAV;
-use Sabre\CalDAV;
-
-/**
- * This class represents the cs:invite-reply notification element.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class InviteReply extends DAV\Property implements CalDAV\Notifications\INotificationType {
-
-    /**
-     * A unique id for the message
-     *
-     * @var string
-     */
-    protected $id;
-
-    /**
-     * Timestamp of the notification
-     *
-     * @var DateTime
-     */
-    protected $dtStamp;
-
-    /**
-     * The unique id of the notification this was a reply to.
-     *
-     * @var string
-     */
-    protected $inReplyTo;
-
-    /**
-     * A url to the recipient of the original (!) notification.
-     *
-     * @var string
-     */
-    protected $href;
-
-    /**
-     * The type of message, see the SharingPlugin::STATUS_ constants.
-     *
-     * @var int
-     */
-    protected $type;
-
-    /**
-     * A url to the shared calendar.
-     *
-     * @var string
-     */
-    protected $hostUrl;
-
-    /**
-     * A description of the share request
-     *
-     * @var string
-     */
-    protected $summary;
-
-    /**
-     * Notification Etag
-     *
-     * @var string
-     */
-    protected $etag;
-
-    /**
-     * Creates the Invite Reply Notification.
-     *
-     * This constructor receives an array with the following elements:
-     *
-     *   * id           - A unique id
-     *   * etag         - The etag
-     *   * dtStamp      - A DateTime object with a timestamp for the notification.
-     *   * inReplyTo    - This should refer to the 'id' of the notification
-     *                    this is a reply to.
-     *   * type         - The type of notification, see SharingPlugin::STATUS_*
-     *                    constants for details.
-     *   * hostUrl      - A url to the shared calendar.
-     *   * summary      - Description of the share, can be the same as the
-     *                    calendar, but may also be modified (optional).
-     */
-    public function __construct(array $values) {
-
-        $required = array(
-            'id',
-            'etag',
-            'href',
-            'dtStamp',
-            'inReplyTo',
-            'type',
-            'hostUrl',
-        );
-        foreach($required as $item) {
-            if (!isset($values[$item])) {
-                throw new \InvalidArgumentException($item . ' is a required constructor option');
-            }
-        }
-
-        foreach($values as $key=>$value) {
-            if (!property_exists($this, $key)) {
-                throw new \InvalidArgumentException('Unknown option: ' . $key);
-            }
-            $this->$key = $value;
-        }
-
-    }
-
-    /**
-     * Serializes the notification as a single property.
-     *
-     * You should usually just encode the single top-level element of the
-     * notification.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serialize(DAV\Server $server, \DOMElement $node) {
-
-        $prop = $node->ownerDocument->createElement('cs:invite-reply');
-        $node->appendChild($prop);
-
-    }
-
-    /**
-     * This method serializes the entire notification, as it is used in the
-     * response body.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serializeBody(DAV\Server $server, \DOMElement $node) {
-
-        $doc = $node->ownerDocument;
-
-        $dt = $doc->createElement('cs:dtstamp');
-        $this->dtStamp->setTimezone(new \DateTimezone('GMT'));
-        $dt->appendChild($doc->createTextNode($this->dtStamp->format('Ymd\\THis\\Z')));
-        $node->appendChild($dt);
-
-        $prop = $doc->createElement('cs:invite-reply');
-        $node->appendChild($prop);
-
-        $uid = $doc->createElement('cs:uid');
-        $uid->appendChild($doc->createTextNode($this->id));
-        $prop->appendChild($uid);
-
-        $inReplyTo = $doc->createElement('cs:in-reply-to');
-        $inReplyTo->appendChild( $doc->createTextNode($this->inReplyTo) );
-        $prop->appendChild($inReplyTo);
-
-        $href = $doc->createElement('d:href');
-        $href->appendChild( $doc->createTextNode($this->href) );
-        $prop->appendChild($href);
-
-        $nodeName = null;
-        switch($this->type) {
-
-            case SharingPlugin::STATUS_ACCEPTED :
-                $nodeName = 'cs:invite-accepted';
-                break;
-            case SharingPlugin::STATUS_DECLINED :
-                $nodeName = 'cs:invite-declined';
-                break;
-
-        }
-        $prop->appendChild(
-            $doc->createElement($nodeName)
-        );
-        $hostHref = $doc->createElement('d:href', $server->getBaseUri() . $this->hostUrl);
-        $hostUrl  = $doc->createElement('cs:hosturl');
-        $hostUrl->appendChild($hostHref);
-        $prop->appendChild($hostUrl);
-
-        if ($this->summary) {
-            $summary = $doc->createElement('cs:summary');
-            $summary->appendChild($doc->createTextNode($this->summary));
-            $prop->appendChild($summary);
-        }
-
-    }
-
-    /**
-     * Returns a unique id for this notification
-     *
-     * This is just the base url. This should generally be some kind of unique
-     * id.
-     *
-     * @return string
-     */
-    public function getId() {
-
-        return $this->id;
-
-    }
-
-    /**
-     * Returns the ETag for this notification.
-     *
-     * The ETag must be surrounded by literal double-quotes.
-     *
-     * @return string
-     */
-    public function getETag() {
-
-        return $this->etag;
-
-    }
-}
diff --git a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/SystemStatus.php b/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/SystemStatus.php
deleted file mode 100644
index 608892dab..000000000
--- a/vendor/sabre/dav/lib/Sabre/CalDAV/Notifications/Notification/SystemStatus.php
+++ /dev/null
@@ -1,182 +0,0 @@
-<?php
-
-namespace Sabre\CalDAV\Notifications\Notification;
-
-use Sabre\DAV;
-use Sabre\CalDAV;
-
-/**
- * SystemStatus notification
- *
- * This notification can be used to indicate to the user that the system is
- * down.
- *
- * @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
- * @author Evert Pot (http://evertpot.com/)
- * @license http://sabre.io/license/ Modified BSD License
- */
-class SystemStatus extends DAV\Property implements CalDAV\Notifications\INotificationType {
-
-    const TYPE_LOW = 1;
-    const TYPE_MEDIUM = 2;
-    const TYPE_HIGH = 3;
-
-    /**
-     * A unique id
-     *
-     * @var string
-     */
-    protected $id;
-
-    /**
-     * The type of alert. This should be one of the TYPE_ constants.
-     *
-     * @var int
-     */
-    protected $type;
-
-    /**
-     * A human-readable description of the problem.
-     *
-     * @var string
-     */
-    protected $description;
-
-    /**
-     * A url to a website with more information for the user.
-     *
-     * @var string
-     */
-    protected $href;
-
-    /**
-     * Notification Etag
-     *
-     * @var string
-     */
-    protected $etag;
-
-    /**
-     * Creates the notification.
-     *
-     * Some kind of unique id should be provided. This is used to generate a
-     * url.
-     *
-     * @param string $id
-     * @param string $etag
-     * @param int $type
-     * @param string $description
-     * @param string $href
-     */
-    public function __construct($id, $etag, $type = self::TYPE_HIGH, $description = null, $href = null) {
-
-        $this->id = $id;
-        $this->type = $type;
-        $this->description = $description;
-        $this->href = $href;
-        $this->etag = $etag;
-
-    }
-
-    /**
-     * Serializes the notification as a single property.
-     *
-     * You should usually just encode the single top-level element of the
-     * notification.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serialize(DAV\Server $server, \DOMElement $node) {
-
-        switch($this->type) {
-            case self::TYPE_LOW :
-                $type = 'low';
-                break;
-            case self::TYPE_MEDIUM :
-                $type = 'medium';
-                break;
-            default :
-            case self::TYPE_HIGH :
-                $type = 'high';
-                break;
-        }
-
-        $prop = $node->ownerDocument->createElement('cs:systemstatus');
-        $prop->setAttribute('type', $type);
-
-        $node->appendChild($prop);
-
-    }
-
-    /**
-     * This method serializes the entire notification, as it is used in the
-     * response body.
-     *
-     * @param DAV\Server $server
-     * @param \DOMElement $node
-     * @return void
-     */
-    public function serializeBody(DAV\Server $server, \DOMElement $node) {
-
-        switch($this->type) {
-            case self::TYPE_LOW :
-                $type = 'low';
-                break;
-            case self::TYPE_MEDIUM :
-                $type = 'medium';
-                break;
-            default :
-            case self::TYPE_HIGH :
-                $type = 'high';
-                break;
-        }
-
-        $prop = $node->ownerDocument->createElement('cs:systemstatus');
-        $prop->setAttribute('type', $type);
-
-        if ($this->description) {
-            $text = $node->ownerDocument->createTextNode($this->description);
-            $desc = $node->ownerDocument->createElement('cs:description');
-            $desc->appendChild($text);
-            $prop->appendChild($desc);
-        }
-        if ($this->href) {
-            $text = $node->ownerDocument->createTextNode($this->href);
-            $href = $node->ownerDocument->createElement('d:href');
-            $href->appendChild($text);
-            $prop->appendChild($href);
-        }
-
-        $node->appendChild($prop);
-
-    }
-
-    /**
-     * Returns a unique id for this notification
-     *
-     * This is just the base url. This should generally be some kind of unique
-     * id.
-     *
-     * @return string
-     */
-    public function getId() {
-
-        return $this->id;
-
-    }
-
-    /*
-     * Returns the ETag for this notification.
-     *
-     * The ETag must be surrounded by literal double-quotes.
-     *
-     * @return string
-     */
-    public function getETag() {
-
-        return $this->etag;
-
-    }
-}