Heavily refactored, including multiple calendars per user and recurring events. Not in an installable state yet, though

dav/Changelog.txt

@@ -0,0 +1,15 @@
+v0.2.0
+======
+[FEATURE] Multiple private Calendars can be created.
+[COMPATIBILITY] When creating or updating an event using CalDAV, the etag is returned.
+
+v0.1.1
+======
+[FEATURE] A "New Event" Button in the navigation bar of the calendar is added.
+[FEATURE] When creating an event by dragging in the calendar, the "Edit Details"-Link leads to a page where the details can be added before actually creating the event.
+[BUGFIX] When editing a event, the start time cannot be set befor the end time anymore.
+[BUGFIX] Fixed some problems with Magic Quotes
+
+v0.1.0
+======
+Initial Release

dav/README.md

@@ -6,19 +6,24 @@ It's still in a very early stage, so expect major bugs. Please feel free to repo
 At the moment, the calendar system supports the following features:
 - A web-based drag&drop interface for managing events
 - All-Day-Events, Multi-Day-Events, and time-based events
+- Recurrences (not the whole set of options given in the iCalendar spec, but the most important ones)
+- Multiple calendars per user
 - Access to the events using CalDAV (using iPhone, Thunderbird Lightning etc., see below)
-- read-only access to the friendica-native events (also using CalDAV)
+- Read-only access to the friendica-native events (also using CalDAV)
 - The friendica-contacts are made available using CardDAV (confirmed to work with iOS)
 - Giving the subject, a description, a location and a color for the event (the color is not available through CalDAV, though)
 
+
 Internationalization:
 - At the moment, settings for the US and the german systems are selectable (regarding the date format and the first day of the week). More will be added on request.
 - The basic design of the system is aware of timezones; however this is not reflected in the UI yet. It currently assumes that the timezone set in the friendica-installation matches the user's local time and matches the local time set in the user's operating system.
 
 CalDAV device compatibility:
 - iOS (iPhone/iPodTouch) works
-- Thunderbird Lightning should work, not tested yet
-- Android: http://dmfs.org/caldav/ seems to work, not much tested yet, though
+- Thunderbird Lightning works
+- Android:
+  - aCal (http://andrew.mcmillan.net.nz/projects/aCal) works, available in F-Droid and Google Play
+  - CalDAV-Sync (http://dmfs.org/caldav/) works, non-free
 
 Installation
 After activating, serveral tables in the database have to be created. The admin-interface of the plugin will try to do this automatically.
@@ -26,10 +31,9 @@ In case of errors, the SQL-statement to create the tables manually are shown in
 
 
 Functuality missing: (a.k.a. "Roadmap")
-- Recurrence of events (this is only supported using the CalDAV-interface; recurring events saved using CalDAV will appear correctly multiple times in the web-based frontend; hovever those events will be read-only at the web-based frondend)
-- Sharing events; all events are private at the moment, therefore this system is not yet a complete replacement for the friendica-native events
+- Sharing events; all events are private at the moment, therefore this system is not a complete replacement for the friendica-native events
 - Attendees / Collaboration
-
+- ICS Export and Import
 
 
 Used libraries
@@ -46,10 +50,6 @@ jQueryUI
 http://jqueryui.com/
 Dual-licenced: MIT and GPL licenses
 
-iCalCreator
-http://kigkonsult.se/iCalcreator/
-GNU Lesser General Public License
-
 TimePicker
 http://www.texotela.co.uk/code/jquery/timepicker/
 Dual-licenced: MIT and GPL licenses

dav/SabreDAV/ChangeLog

@@ -1,31 +1,47 @@
 1.7.0-alpha (2012-??-??)
-    * BC Break: The calendarobjects database table has a bunch of new fields,
-	  and a migration script is required to ensure everything will keep
-	  working. Read the wiki for more details. 
+    * BC Break: The calendarobjects database table has a bunch of new
+	  fields, and a migration script is required to ensure everything will
+	  keep working. Read the wiki for more details.
 	* BC Break: The iCalendar interface now has a new method: calendarQuery.
 	* BC Break: In this version a number of classes have been deleted, that
 	  have been previously deprecated. Namely:
 		- Sabre_DAV_Directory (now: Sabre_DAV_Collection)
 		- Sabre_DAV_SimpleDirectory (now: Sabre_DAV_SimpleCollection)
-	    - Sabre_VObject_Element_DateTime (now: Sabre_VObject_Property_DateTime)
-		- Sabre_VObject_Element_MultiDateTime (now .._Property_MultiDateTime)
+	    - Sabre_VObject_Element_DateTime (now: .._Property_DateTime)
+		- Sabre_VObject_Element_MultiDateTime (-> .._Property_MultiDateTime)
 	* BC Break: Sabre_CalDAV_Schedule_IMip::sendMessage now has an extra
 	  argument. If you extended this class, you should fix this method. It's
 	  only used for informational purposes.
-	* Changed: Responsibility for dealing with the calendar-query is now moved
-	  from the CalDAV plugin to the CalDAV backends. This allows for heavy
-	  optimizations.
-	* Changed: The CalDAV PDO backend is now a lot faster for common calendar
-	  queries. 
-	* Fixed: Marking both the text/calendar and text/x-vcard as UTF-8 encoded.
+	* New feature: Support for caldav notifications!
+	* Changed: Responsibility for dealing with the calendar-query is now
+	  moved from the CalDAV plugin to the CalDAV backends. This allows for
+	  heavy optimizations.
+	* Changed: The CalDAV PDO backend is now a lot faster for common
+	  calendar queries.
+	* Fixed: Marking both the text/calendar and text/x-vcard as UTF-8
+	  encoded.
 	* Fixed: Workaround for the SOGO connector, as it doesn't understand
 	  receiving "text/x-vcard; charset=utf-8" for a contenttype.
 	* Added: Sabre_DAV_Client now throws more specific exceptions in cases
 	  where we already has an exception class.
-	* Added: Sabre_DAV_PartialUpdate. This plugin allows you to use the PATCH
-	  method to update parts of a file.
+	* Added: Sabre_DAV_PartialUpdate. This plugin allows you to use the
+	  PATCH method to update parts of a file.
+	* Added: Tons of timezone name mappings for Microsoft Exchange.
+	* Added: Support for an 'exception' event.
+	* Fixed: Uploaded VCards without a UID are now rejected. (thanks Dominik!)
+	* Fixed: Rejecting calendar objects if they are not in the
+	  supported-calendar-component list. (thanks Armin!)
 
-1.6.3-stable (2012-??-??)
+1.6.4-stable (2012-??-??)
+	* Fixed: Issue 220: Calendar-query filters may fail when filtering on
+	  alarms, if an overridden event has it's alarm removed.
+	* Fixed: Compatibility for OS/X 10.8 iCal in the IMipHandler.
+	* Fixed: Issue 222: beforeWriteContent shouldn't be called for lock
+	  requests.
+	* Fixed: Problem with POST requests to the outbox if mailto: was not lower
+	  cased.
+
+1.6.3-stable (2012-06-12)
 	* Added: It's now possible to specify in Sabre_DAV_Client which type of
 	  authentication is to be used.
 	* Fixed: Issue 206: Sabre_DAV_Client PUT requests are fixed.
@@ -43,6 +59,7 @@
 	  compatibility.
 	* Fixed: Added a workaround for a bug in KDE 4.8.2 contact syncing. See
 	  https://bugs.kde.org/show_bug.cgi?id=300047
+	* Fixed: Issue 217: Sabre_DAV_Tree_FileSystem was pretty broken.
 
 1.6.2-stable (2012-04-16)
 	* Fixed: Sabre_VObject_Node::$parent should have been public.

dav/SabreDAV/bin/migrateto17.php

@@ -95,7 +95,12 @@ foreach($fields17 as $field) {
 if ($found === 0) {
     echo "The database had the 1.6 schema. Table will now be altered.\n";
     echo "This may take some time for large tables\n";
-    $pdo->exec(<<<SQL
+
+    switch($pdo->getAttribute(PDO::ATTR_DRIVER_NAME)) {
+
+        case 'mysql' :
+
+            $pdo->exec(<<<SQL
 ALTER TABLE calendarobjects 
 ADD etag VARCHAR(32),
 ADD size INT(11) UNSIGNED,
@@ -103,7 +108,20 @@ ADD componenttype VARCHAR(8),
 ADD firstoccurence INT(11) UNSIGNED,
 ADD lastoccurence INT(11) UNSIGNED
 SQL
-);
+        );
+            break;
+            case 'sqlite' :
+                $pdo->exec('ALTER TABLE calendarobjects ADD etag text');
+                $pdo->exec('ALTER TABLE calendarobjects ADD size integer');
+                $pdo->exec('ALTER TABLE calendarobjects ADD componenttype TEXT');
+                $pdo->exec('ALTER TABLE calendarobjects ADD firstoccurence integer');
+                $pdo->exec('ALTER TABLE calendarobjects ADD lastoccurence integer');
+                break;
+
+        default :
+            die('This upgrade script does not support this driver (' . $pdo->getAttribute(PDO::ATTR_DRIVER_NAME) . ")\n");
+
+    } 
     echo "Database schema upgraded.\n";
 
 } elseif ($found === 5) {

dav/SabreDAV/docs/rfc5785.txt

@@ -0,0 +1,451 @@
+
+
+
+
+
+
+Internet Engineering Task Force (IETF)                     M. Nottingham
+Request for Comments: 5785                               E. Hammer-Lahav
+Updates: 2616, 2818                                           April 2010
+Category: Standards Track
+ISSN: 2070-1721
+
+
+        Defining Well-Known Uniform Resource Identifiers (URIs)
+
+Abstract
+
+   This memo defines a path prefix for "well-known locations",
+   "/.well-known/", in selected Uniform Resource Identifier (URI)
+   schemes.
+
+Status of This Memo
+
+   This is an Internet Standards Track document.
+
+   This document is a product of the Internet Engineering Task Force
+   (IETF).  It represents the consensus of the IETF community.  It has
+   received public review and has been approved for publication by the
+   Internet Engineering Steering Group (IESG).  Further information on
+   Internet Standards is available in Section 2 of RFC 5741.
+
+   Information about the current status of this document, any errata,
+   and how to provide feedback on it may be obtained at
+   http://www.rfc-editor.org/info/rfc5785.
+
+Copyright Notice
+
+   Copyright (c) 2010 IETF Trust and the persons identified as the
+   document authors.  All rights reserved.
+
+   This document is subject to BCP 78 and the IETF Trust's Legal
+   Provisions Relating to IETF Documents
+   (http://trustee.ietf.org/license-info) in effect on the date of
+   publication of this document.  Please review these documents
+   carefully, as they describe your rights and restrictions with respect
+   to this document.  Code Components extracted from this document must
+   include Simplified BSD License text as described in Section 4.e of
+   the Trust Legal Provisions and are provided without warranty as
+   described in the Simplified BSD License.
+
+
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 1]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+Table of Contents
+
+   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
+     1.1.  Appropriate Use of Well-Known URIs  . . . . . . . . . . . . 3
+   2.  Notational Conventions  . . . . . . . . . . . . . . . . . . . . 3
+   3.  Well-Known URIs . . . . . . . . . . . . . . . . . . . . . . . . 3
+   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 4
+   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
+     5.1.  The Well-Known URI Registry . . . . . . . . . . . . . . . . 4
+       5.1.1.  Registration Template . . . . . . . . . . . . . . . . . 5
+   6.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 5
+     6.1.  Normative References  . . . . . . . . . . . . . . . . . . . 5
+     6.2.  Informative References  . . . . . . . . . . . . . . . . . . 5
+   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . . . 7
+   Appendix B.  Frequently Asked Questions . . . . . . . . . . . . . . 7
+
+1.  Introduction
+
+   It is increasingly common for Web-based protocols to require the
+   discovery of policy or other information about a host ("site-wide
+   metadata") before making a request.  For example, the Robots
+   Exclusion Protocol <http://www.robotstxt.org/> specifies a way for
+   automated processes to obtain permission to access resources;
+   likewise, the Platform for Privacy Preferences [W3C.REC-P3P-20020416]
+   tells user-agents how to discover privacy policy beforehand.
+
+   While there are several ways to access per-resource metadata (e.g.,
+   HTTP headers, WebDAV's PROPFIND [RFC4918]), the perceived overhead
+   (either in terms of client-perceived latency and/or deployment
+   difficulties) associated with them often precludes their use in these
+   scenarios.
+
+   When this happens, it is common to designate a "well-known location"
+   for such data, so that it can be easily located.  However, this
+   approach has the drawback of risking collisions, both with other such
+   designated "well-known locations" and with pre-existing resources.
+
+   To address this, this memo defines a path prefix in HTTP(S) URIs for
+   these "well-known locations", "/.well-known/".  Future specifications
+   that need to define a resource for such site-wide metadata can
+   register their use to avoid collisions and minimise impingement upon
+   sites' URI space.
+
+
+
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 2]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+1.1.  Appropriate Use of Well-Known URIs
+
+   There are a number of possible ways that applications could use Well-
+   known URIs.  However, in keeping with the Architecture of the World-
+   Wide Web [W3C.REC-webarch-20041215], well-known URIs are not intended
+   for general information retrieval or establishment of large URI
+   namespaces on the Web.  Rather, they are designed to facilitate
+   discovery of information on a site when it isn't practical to use
+   other mechanisms; for example, when discovering policy that needs to
+   be evaluated before a resource is accessed, or when using multiple
+   round-trips is judged detrimental to performance.
+
+   As such, the well-known URI space was created with the expectation
+   that it will be used to make site-wide policy information and other
+   metadata available directly (if sufficiently concise), or provide
+   references to other URIs that provide such metadata.
+
+2.  Notational Conventions
+
+   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
+   document are to be interpreted as described in RFC 2119 [RFC2119].
+
+3.  Well-Known URIs
+
+   A well-known URI is a URI [RFC3986] whose path component begins with
+   the characters "/.well-known/", and whose scheme is "HTTP", "HTTPS",
+   or another scheme that has explicitly been specified to use well-
+   known URIs.
+
+   Applications that wish to mint new well-known URIs MUST register
+   them, following the procedures in Section 5.1.
+
+   For example, if an application registers the name 'example', the
+   corresponding well-known URI on 'http://www.example.com/' would be
+   'http://www.example.com/.well-known/example'.
+
+   Registered names MUST conform to the segment-nz production in
+   [RFC3986].
+
+   Note that this specification defines neither how to determine the
+   authority to use for a particular context, nor the scope of the
+   metadata discovered by dereferencing the well-known URI; both should
+   be defined by the application itself.
+
+   Typically, a registration will reference a specification that defines
+   the format and associated media type to be obtained by dereferencing
+   the well-known URI.
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 3]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+   It MAY also contain additional information, such as the syntax of
+   additional path components, query strings and/or fragment identifiers
+   to be appended to the well-known URI, or protocol-specific details
+   (e.g., HTTP [RFC2616] method handling).
+
+   Note that this specification does not define a format or media-type
+   for the resource located at "/.well-known/" and clients should not
+   expect a resource to exist at that location.
+
+4.  Security Considerations
+
+   This memo does not specify the scope of applicability of metadata or
+   policy obtained from a well-known URI, and does not specify how to
+   discover a well-known URI for a particular application.  Individual
+   applications using this mechanism must define both aspects.
+
+   Applications minting new well-known URIs, as well as administrators
+   deploying them, will need to consider several security-related
+   issues, including (but not limited to) exposure of sensitive data,
+   denial-of-service attacks (in addition to normal load issues), server
+   and client authentication, vulnerability to DNS rebinding attacks,
+   and attacks where limited access to a server grants the ability to
+   affect how well-known URIs are served.
+
+5.  IANA Considerations
+
+5.1.  The Well-Known URI Registry
+
+   This document establishes the well-known URI registry.
+
+   Well-known URIs are registered on the advice of one or more
+   Designated Experts (appointed by the IESG or their delegate), with a
+   Specification Required (using terminology from [RFC5226]).  However,
+   to allow for the allocation of values prior to publication, the
+   Designated Expert(s) may approve registration once they are satisfied
+   that such a specification will be published.
+
+   Registration requests should be sent to the
+   wellknown-uri-review@ietf.org mailing list for review and comment,
+   with an appropriate subject (e.g., "Request for well-known URI:
+   example").
+
+   Before a period of 14 days has passed, the Designated Expert(s) will
+   either approve or deny the registration request, communicating this
+   decision both to the review list and to IANA.  Denials should include
+   an explanation and, if applicable, suggestions as to how to make the
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 4]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+   request successful.  Registration requests that are undetermined for
+   a period longer than 21 days can be brought to the IESG's attention
+   (using the iesg@iesg.org mailing list) for resolution.
+
+5.1.1.  Registration Template
+
+   URI suffix:  The name requested for the well-known URI, relative to
+      "/.well-known/"; e.g., "example".
+
+   Change controller:  For Standards-Track RFCs, state "IETF".  For
+      others, give the name of the responsible party.  Other details
+      (e.g., postal address, e-mail address, home page URI) may also be
+      included.
+
+   Specification document(s):  Reference to the document that specifies
+      the field, preferably including a URI that can be used to retrieve
+      a copy of the document.  An indication of the relevant sections
+      may also be included, but is not required.
+
+   Related information:  Optionally, citations to additional documents
+      containing further relevant information.
+
+6.  References
+
+6.1.  Normative References
+
+   [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
+             Requirement Levels", BCP 14, RFC 2119, March 1997.
+
+   [RFC3986] Berners-Lee, T., Fielding, R., and L.  Masinter, "Uniform
+             Resource Identifier (URI): Generic Syntax", STD 66,
+             RFC 3986, January 2005.
+
+   [RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an
+             IANA Considerations Section in RFCs", BCP 26, RFC 5226,
+             May 2008.
+
+6.2.  Informative References
+
+   [RFC2616] Fielding, R., Gettys, J., Mogul, J., Frystyk, H., Masinter,
+             L., Leach, P., and T. Berners-Lee, "Hypertext Transfer
+             Protocol -- HTTP/1.1", RFC 2616, June 1999.
+
+   [RFC4918] Dusseault, L., "HTTP Extensions for Web Distributed
+             Authoring and Versioning (WebDAV)", RFC 4918, June 2007.
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 5]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+   [W3C.REC-P3P-20020416]
+             Marchiori, M., "The Platform for Privacy Preferences 1.0
+             (P3P1.0) Specification", World Wide Web Consortium
+             Recommendation REC-P3P-20020416, April 2002,
+             <http://www.w3.org/TR/2002/ REC-P3P-20020416>.
+
+   [W3C.REC-webarch-20041215]
+             Jacobs, I. and N. Walsh, "Architecture of the World Wide
+             Web, Volume One", World Wide Web Consortium
+             Recommendation REC- webarch-20041215, December 2004,
+             <http:// www.w3.org/TR/2004/REC-webarch-20041215>.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 6]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+Appendix A.  Acknowledgements
+
+   We would like to acknowledge the contributions of everyone who
+   provided feedback and use cases for this document; in particular,
+   Phil Archer, Dirk Balfanz, Adam Barth, Tim Bray, Brian Eaton, Brad
+   Fitzpatrick, Joe Gregorio, Paul Hoffman, Barry Leiba, Ashok Malhotra,
+   Breno de Medeiros, John Panzer, and Drummond Reed.  However, they are
+   not responsible for errors and omissions.
+
+Appendix B.  Frequently Asked Questions
+
+   1. Aren't well-known locations bad for the Web?
+
+      They are, but for various reasons -- both technical and social --
+      they are commonly used and their use is increasing.  This memo
+      defines a "sandbox" for them, to reduce the risks of collision and
+      to minimise the impact upon pre-existing URIs on sites.
+
+   2. Why /.well-known?
+
+      It's short, descriptive, and according to search indices, not
+      widely used.
+
+   3. What impact does this have on existing mechanisms, such as P3P and
+      robots.txt?
+
+      None, until they choose to use this mechanism.
+
+   4. Why aren't per-directory well-known locations defined?
+
+      Allowing every URI path segment to have a well-known location
+      (e.g., "/images/.well-known/") would increase the risks of
+      colliding with a pre-existing URI on a site, and generally these
+      solutions are found not to scale well, because they're too
+      "chatty".
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 7]
+
+RFC 5785                Defining Well-Known URIs              April 2010
+
+
+Authors' Addresses
+
+   Mark Nottingham
+
+   EMail: mnot@mnot.net
+   URI:   http://www.mnot.net/
+
+
+   Eran Hammer-Lahav
+
+   EMail: eran@hueniverse.com
+   URI:   http://hueniverse.com/
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Nottingham & Hammer-Lahav    Standards Track                    [Page 8]
+

dav/SabreDAV/examples/webserver/apache2_vhost.conf

@@ -7,27 +7,27 @@
 # settings as well.
 <VirtualHost *:*>
 
-	# Don't forget to change the server name
-	# ServerName dav.example.org
+    # Don't forget to change the server name
+    # ServerName dav.example.org
 
-	# The DocumentRoot is also required
+    # The DocumentRoot is also required
     # DocumentRoot /home/sabredav/
 
-	RewriteEngine On
-	# This makes every request go to server.php
-	RewriteRule ^/(.*)$ /server.php [L]
+    RewriteEngine On
+    # This makes every request go to server.php
+    RewriteRule ^/(.*)$ /server.php [L]
 
-	# Output buffering needs to be off, to prevent high memory usage
-	php_flag output_buffering off
+    # Output buffering needs to be off, to prevent high memory usage
+    php_flag output_buffering off
 
-	# This is also to prevent high memory usage
-	php_flag always_populate_raw_post_data off
+    # This is also to prevent high memory usage
+    php_flag always_populate_raw_post_data off
 
-	# This is almost a given, but magic quotes is *still* on on some
-	# linux distributions
-	php_flag magic_quotes_gpc off
+    # This is almost a given, but magic quotes is *still* on on some
+    # linux distributions
+    php_flag magic_quotes_gpc off
 
-	# SabreDAV is not compatible with mbstring function overloading
-	php_flag mbstring.func_overload off
+    # SabreDAV is not compatible with mbstring function overloading
+    php_flag mbstring.func_overload off
 
 </VirtualHost *:*>

dav/SabreDAV/examples/webserver/apache2_vhost_cgi.conf

@@ -6,16 +6,16 @@
 # This configuration assumes CGI or FastCGI is used.
 <VirtualHost *:*>
 
-	# Don't forget to change the server name
-	# ServerName dav.example.org
+    # Don't forget to change the server name
+    # ServerName dav.example.org
 
-	# The DocumentRoot is also required
+    # The DocumentRoot is also required
     # DocumentRoot /home/sabredav/
 
-	# This makes every request go to server.php. This also makes sure
-	# the Authentication information is available. If your server script is
-	# not called server.php, be sure to change it.
-	RewriteEngine On
-	RewriteRule ^/(.*)$ /server.php [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+    # This makes every request go to server.php. This also makes sure
+    # the Authentication information is available. If your server script is
+    # not called server.php, be sure to change it.
+    RewriteEngine On
+    RewriteRule ^/(.*)$ /server.php [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
 
 </VirtualHost *:*>

dav/SabreDAV/lib/Sabre/CalDAV/Backend/Abstract.php

@@ -3,45 +3,15 @@
 /**
  * Abstract Calendaring backend. Extend this class to create your own backends.
  *
+ * Checkout the BackendInterface for all the methods that must be implemented.
+ *
  * @package Sabre
  * @subpackage CalDAV
  * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
  */
-abstract class Sabre_CalDAV_Backend_Abstract {
-
-    /**
-     * Returns a list of calendars for a principal.
-     *
-     * Every project is an array with the following keys:
-     *  * id, a unique id that will be used by other functions to modify the
-     *    calendar. This can be the same as the uri or a database key.
-     *  * uri, which the basename of the uri with which the calendar is
-     *    accessed.
-     *  * principaluri. The owner of the calendar. Almost always the same as
-     *    principalUri passed to this method.
-     *
-     * Furthermore it can contain webdav properties in clark notation. A very
-     * common one is '{DAV:}displayname'.
-     *
-     * @param string $principalUri
-     * @return array
-     */
-    abstract function getCalendarsForUser($principalUri);
-
-    /**
-     * Creates a new calendar for a principal.
-     *
-     * If the creation was a success, an id must be returned that can be used to reference
-     * this calendar in other methods, such as updateCalendar.
-     *
-     * @param string $principalUri
-     * @param string $calendarUri
-     * @param array $properties
-     * @return void
-     */
-    abstract function createCalendar($principalUri,$calendarUri,array $properties);
+abstract class Sabre_CalDAV_Backend_Abstract implements Sabre_CalDAV_Backend_BackendInterface {
 
     /**
      * Updates properties for a calendar.
@@ -85,102 +55,6 @@ abstract class Sabre_CalDAV_Backend_Abstract {
 
     }
 
-    /**
-     * Delete a calendar and all it's objects
-     *
-     * @param mixed $calendarId
-     * @return void
-     */
-    abstract function deleteCalendar($calendarId);
-
-    /**
-     * Returns all calendar objects within a calendar.
-     *
-     * Every item contains an array with the following keys:
-     *   * id - unique identifier which will be used for subsequent updates
-     *   * calendardata - The iCalendar-compatible calendar data
-     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
-     *   * lastmodified - a timestamp of the last modification time
-     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
-     *   '  "abcdef"')
-     *   * calendarid - The calendarid as it was passed to this function.
-     *   * size - The size of the calendar objects, in bytes.
-     *
-     * Note that the etag is optional, but it's highly encouraged to return for
-     * speed reasons.
-     *
-     * The calendardata is also optional. If it's not returned
-     * 'getCalendarObject' will be called later, which *is* expected to return
-     * calendardata.
-     *
-     * If neither etag or size are specified, the calendardata will be
-     * used/fetched to determine these numbers. If both are specified the
-     * amount of times this is needed is reduced by a great degree.
-     *
-     * @param mixed $calendarId
-     * @return array
-     */
-    abstract function getCalendarObjects($calendarId);
-
-    /**
-     * Returns information from a single calendar object, based on it's object
-     * uri.
-     *
-     * The returned array must have the same keys as getCalendarObjects. The
-     * 'calendardata' object is required here though, while it's not required
-     * for getCalendarObjects.
-     *
-     * @param mixed $calendarId
-     * @param string $objectUri
-     * @return array
-     */
-    abstract function getCalendarObject($calendarId,$objectUri);
-
-    /**
-     * Creates a new calendar object.
-     *
-     * It is possible return an etag from this function, which will be used in
-     * the response to this PUT request. Note that the ETag must be surrounded
-     * by double-quotes.
-     *
-     * However, you should only really return this ETag if you don't mangle the
-     * calendar-data. If the result of a subsequent GET to this object is not
-     * the exact same as this request body, you should omit the ETag.
-     *
-     * @param mixed $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return string|null
-     */
-    abstract function createCalendarObject($calendarId,$objectUri,$calendarData);
-
-    /**
-     * Updates an existing calendarobject, based on it's uri.
-     *
-     * It is possible return an etag from this function, which will be used in
-     * the response to this PUT request. Note that the ETag must be surrounded
-     * by double-quotes.
-     *
-     * However, you should only really return this ETag if you don't mangle the
-     * calendar-data. If the result of a subsequent GET to this object is not
-     * the exact same as this request body, you should omit the ETag.
-     *
-     * @param mixed $calendarId
-     * @param string $objectUri
-     * @param string $calendarData
-     * @return string|null
-     */
-    abstract function updateCalendarObject($calendarId,$objectUri,$calendarData);
-
-    /**
-     * Deletes an existing calendar object.
-     *
-     * @param mixed $calendarId
-     * @param string $objectUri
-     * @return void
-     */
-    abstract function deleteCalendarObject($calendarId,$objectUri);
-
     /**
      * Performs a calendar-query on the contents of this calendar.
      *

dav/SabreDAV/lib/Sabre/CalDAV/Backend/BackendInterface.php

@@ -0,0 +1,231 @@
+<?php
+
+/**
+ * Every CalDAV backend must at least implement this interface.
+ * 
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_CalDAV_Backend_BackendInterface {
+
+    /**
+     * Returns a list of calendars for a principal.
+     *
+     * Every project is an array with the following keys:
+     *  * id, a unique id that will be used by other functions to modify the
+     *    calendar. This can be the same as the uri or a database key.
+     *  * uri, which the basename of the uri with which the calendar is
+     *    accessed.
+     *  * principaluri. The owner of the calendar. Almost always the same as
+     *    principalUri passed to this method.
+     *
+     * Furthermore it can contain webdav properties in clark notation. A very
+     * common one is '{DAV:}displayname'.
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    public function getCalendarsForUser($principalUri);
+
+    /**
+     * Creates a new calendar for a principal.
+     *
+     * If the creation was a success, an id must be returned that can be used to reference
+     * this calendar in other methods, such as updateCalendar.
+     *
+     * @param string $principalUri
+     * @param string $calendarUri
+     * @param array $properties
+     * @return void
+     */
+    public function createCalendar($principalUri,$calendarUri,array $properties);
+
+    /**
+     * Updates properties for a calendar.
+     *
+     * The mutations array uses the propertyName in clark-notation as key,
+     * and the array value for the property value. In the case a property
+     * should be deleted, the property value will be null.
+     *
+     * This method must be atomic. If one property cannot be changed, the
+     * entire operation must fail.
+     *
+     * If the operation was successful, true can be returned.
+     * If the operation failed, false can be returned.
+     *
+     * Deletion of a non-existent property is always successful.
+     *
+     * Lastly, it is optional to return detailed information about any
+     * failures. In this case an array should be returned with the following
+     * structure:
+     *
+     * array(
+     *   403 => array(
+     *      '{DAV:}displayname' => null,
+     *   ),
+     *   424 => array(
+     *      '{DAV:}owner' => null,
+     *   )
+     * )
+     *
+     * In this example it was forbidden to update {DAV:}displayname.
+     * (403 Forbidden), which in turn also caused {DAV:}owner to fail
+     * (424 Failed Dependency) because the request needs to be atomic.
+     *
+     * @param mixed $calendarId
+     * @param array $mutations
+     * @return bool|array
+     */
+    public function updateCalendar($calendarId, array $mutations); 
+
+    /**
+     * Delete a calendar and all it's objects
+     *
+     * @param mixed $calendarId
+     * @return void
+     */
+    public function deleteCalendar($calendarId);
+
+    /**
+     * Returns all calendar objects within a calendar.
+     *
+     * Every item contains an array with the following keys:
+     *   * id - unique identifier which will be used for subsequent updates
+     *   * calendardata - The iCalendar-compatible calendar data
+     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
+     *   * lastmodified - a timestamp of the last modification time
+     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
+     *   '  "abcdef"')
+     *   * calendarid - The calendarid as it was passed to this function.
+     *   * size - The size of the calendar objects, in bytes.
+     *
+     * Note that the etag is optional, but it's highly encouraged to return for
+     * speed reasons.
+     *
+     * The calendardata is also optional. If it's not returned
+     * 'getCalendarObject' will be called later, which *is* expected to return
+     * calendardata.
+     *
+     * If neither etag or size are specified, the calendardata will be
+     * used/fetched to determine these numbers. If both are specified the
+     * amount of times this is needed is reduced by a great degree.
+     *
+     * @param mixed $calendarId
+     * @return array
+     */
+    public function getCalendarObjects($calendarId);
+
+    /**
+     * Returns information from a single calendar object, based on it's object
+     * uri.
+     *
+     * The returned array must have the same keys as getCalendarObjects. The
+     * 'calendardata' object is required here though, while it's not required
+     * for getCalendarObjects.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @return array
+     */
+    public function getCalendarObject($calendarId,$objectUri);
+
+    /**
+     * Creates a new calendar object.
+     *
+     * It is possible return an etag from this function, which will be used in
+     * the response to this PUT request. Note that the ETag must be surrounded
+     * by double-quotes.
+     *
+     * However, you should only really return this ETag if you don't mangle the
+     * calendar-data. If the result of a subsequent GET to this object is not
+     * the exact same as this request body, you should omit the ETag.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @return string|null
+     */
+    public function createCalendarObject($calendarId,$objectUri,$calendarData);
+
+    /**
+     * Updates an existing calendarobject, based on it's uri.
+     *
+     * It is possible return an etag from this function, which will be used in
+     * the response to this PUT request. Note that the ETag must be surrounded
+     * by double-quotes.
+     *
+     * However, you should only really return this ETag if you don't mangle the
+     * calendar-data. If the result of a subsequent GET to this object is not
+     * the exact same as this request body, you should omit the ETag.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @return string|null
+     */
+    public function updateCalendarObject($calendarId,$objectUri,$calendarData);
+
+    /**
+     * Deletes an existing calendar object.
+     *
+     * @param mixed $calendarId
+     * @param string $objectUri
+     * @return void
+     */
+    public function deleteCalendarObject($calendarId,$objectUri);
+
+    /**
+     * Performs a calendar-query on the contents of this calendar.
+     *
+     * The calendar-query is defined in RFC4791 : CalDAV. Using the
+     * calendar-query it is possible for a client to request a specific set of
+     * object, based on contents of iCalendar properties, date-ranges and
+     * iCalendar component types (VTODO, VEVENT).
+     *
+     * This method should just return a list of (relative) urls that match this
+     * query.
+     *
+     * The list of filters are specified as an array. The exact array is
+     * documented by Sabre_CalDAV_CalendarQueryParser.
+     *
+     * Note that it is extremely likely that getCalendarObject for every path
+     * returned from this method will be called almost immediately after. You
+     * may want to anticipate this to speed up these requests.
+     *
+     * This method provides a default implementation, which parses *all* the
+     * iCalendar objects in the specified calendar.
+     *
+     * This default may well be good enough for personal use, and calendars
+     * that aren't very large. But if you anticipate high usage, big calendars
+     * or high loads, you are strongly adviced to optimize certain paths.
+     *
+     * The best way to do so is override this method and to optimize
+     * specifically for 'common filters'.
+     *
+     * Requests that are extremely common are:
+     *   * requests for just VEVENTS
+     *   * requests for just VTODO
+     *   * requests with a time-range-filter on either VEVENT or VTODO.
+     *
+     * ..and combinations of these requests. It may not be worth it to try to
+     * handle every possible situation and just rely on the (relatively
+     * easy to use) CalendarQueryValidator to handle the rest.
+     *
+     * Note that especially time-range-filters may be difficult to parse. A
+     * time-range filter specified on a VEVENT must for instance also handle
+     * recurrence rules correctly.
+     * A good example of how to interprete all these filters can also simply
+     * be found in Sabre_CalDAV_CalendarQueryFilter. This class is as correct
+     * as possible, so it gives you a good idea on what type of stuff you need
+     * to think of.
+     *
+     * @param mixed $calendarId
+     * @param array $filters
+     * @return array
+     */
+    public function calendarQuery($calendarId, array $filters); 
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Backend/NotificationSupport.php

@@ -0,0 +1,44 @@
+<?php
+
+/**
+ * Adds caldav notification support to a backend.
+ *
+ * Notifications are defined at:
+ * http://svn.calendarserver.org/repository/calendarserver/CalendarServer/trunk/doc/Extensions/caldav-notifications.txt
+ *
+ * These notifications are basically a list of server-generated notifications 
+ * displayed to the user. Users can dismiss notifications by deleting them.
+ *
+ * The primary usecase is to allow for calendar-sharing.
+ * 
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_CalDAV_Backend_NotificationSupport extends Sabre_CalDAV_Backend_BackendInterface {
+
+    /**
+     * Returns a list of notifications for a given principal url.
+     *
+     * The returned array should only consist of implementations of
+     * Sabre_CalDAV_Notifications_INotificationType. 
+     * 
+     * @param string $principalUri
+     * @return array 
+     */
+    public function getNotificationsForPrincipal($principalUri);
+
+    /**
+     * This deletes a specific notifcation.
+     *
+     * This may be called by a client once it deems a notification handled. 
+     * 
+     * @param string $principalUri 
+     * @param Sabre_CalDAV_Notifications_INotificationType $notification 
+     * @return void
+     */
+    public function deleteNotification($principalUri, Sabre_CalDAV_Notifications_INotificationType $notification); 
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Calendar.php

@@ -24,7 +24,7 @@ class Sabre_CalDAV_Calendar implements Sabre_CalDAV_ICalendar, Sabre_DAV_IProper
     /**
      * CalDAV backend
      *
-     * @var Sabre_CalDAV_Backend_Abstract
+     * @var Sabre_CalDAV_Backend_BackendInterface
      */
     protected $caldavBackend;
 
@@ -39,10 +39,10 @@ class Sabre_CalDAV_Calendar implements Sabre_CalDAV_ICalendar, Sabre_DAV_IProper
      * Constructor
      *
      * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
+     * @param Sabre_CalDAV_Backend_BackendInterface $caldavBackend
      * @param array $calendarInfo
      */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_Abstract $caldavBackend, $calendarInfo) {
+    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_BackendInterface $caldavBackend, $calendarInfo) {
 
         $this->caldavBackend = $caldavBackend;
         $this->principalBackend = $principalBackend;

dav/SabreDAV/lib/Sabre/CalDAV/CalendarObject.php

@@ -12,7 +12,7 @@
 class Sabre_CalDAV_CalendarObject extends Sabre_DAV_File implements Sabre_CalDAV_ICalendarObject, Sabre_DAVACL_IACL {
 
     /**
-     * Sabre_CalDAV_Backend_Abstract
+     * Sabre_CalDAV_Backend_BackendInterface
      *
      * @var array
      */
@@ -35,11 +35,11 @@ class Sabre_CalDAV_CalendarObject extends Sabre_DAV_File implements Sabre_CalDAV
     /**
      * Constructor
      *
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
+     * @param Sabre_CalDAV_Backend_BackendInterface $caldavBackend
      * @param array $calendarInfo
      * @param array $objectData
      */
-    public function __construct(Sabre_CalDAV_Backend_Abstract $caldavBackend,array $calendarInfo,array $objectData) {
+    public function __construct(Sabre_CalDAV_Backend_BackendInterface $caldavBackend,array $calendarInfo,array $objectData) {
 
         $this->caldavBackend = $caldavBackend;
 

dav/SabreDAV/lib/Sabre/CalDAV/CalendarQueryValidator.php

@@ -304,28 +304,29 @@ class Sabre_CalDAV_CalendarQueryValidator {
                         // one is the first to trigger. Based on this, we can
                         // determine if we can 'give up' expanding events.
                         $firstAlarm = null;
-                        foreach($expandedEvent->VALARM as $expandedAlarm) {
+                        if ($expandedEvent->VALARM !== null) {
+                            foreach($expandedEvent->VALARM as $expandedAlarm) {
 
-                            $effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
-                            if ($expandedAlarm->isInTimeRange($start, $end)) {
-                                return true;
-                            }
+                                $effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
+                                if ($expandedAlarm->isInTimeRange($start, $end)) {
+                                    return true;
+                                }
 
-                            if ((string)$expandedAlarm->TRIGGER['VALUE'] === 'DATE-TIME') {
-                                // This is an alarm with a non-relative trigger
-                                // time, likely created by a buggy client. The
-                                // implication is that every alarm in this
-                                // recurring event trigger at the exact same
-                                // time. It doesn't make sense to traverse
-                                // further.
-                            } else {
-                                // We store the first alarm as a means to
-                                // figure out when we can stop traversing.
-                                if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
-                                    $firstAlarm = $effectiveTrigger;
+                                if ((string)$expandedAlarm->TRIGGER['VALUE'] === 'DATE-TIME') {
+                                    // This is an alarm with a non-relative trigger
+                                    // time, likely created by a buggy client. The
+                                    // implication is that every alarm in this
+                                    // recurring event trigger at the exact same
+                                    // time. It doesn't make sense to traverse
+                                    // further.
+                                } else {
+                                    // We store the first alarm as a means to
+                                    // figure out when we can stop traversing.
+                                    if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
+                                        $firstAlarm = $effectiveTrigger;
+                                    }
                                 }
                             }
-
                         }
                         if (is_null($firstAlarm)) {
                             // No alarm was found.

dav/SabreDAV/lib/Sabre/CalDAV/CalendarRootNode.php

@@ -17,7 +17,7 @@ class Sabre_CalDAV_CalendarRootNode extends Sabre_DAVACL_AbstractPrincipalCollec
     /**
      * CalDAV backend
      *
-     * @var Sabre_CalDAV_Backend_Abstract
+     * @var Sabre_CalDAV_Backend_BackendInterface
      */
     protected $caldavBackend;
 
@@ -33,10 +33,10 @@ class Sabre_CalDAV_CalendarRootNode extends Sabre_DAVACL_AbstractPrincipalCollec
      *
      *
      * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
+     * @param Sabre_CalDAV_Backend_BackendInterface $caldavBackend
      * @param string $principalPrefix
      */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend,Sabre_CalDAV_Backend_Abstract $caldavBackend, $principalPrefix = 'principals') {
+    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend,Sabre_CalDAV_Backend_BackendInterface $caldavBackend, $principalPrefix = 'principals') {
 
         parent::__construct($principalBackend, $principalPrefix);
         $this->caldavBackend = $caldavBackend;

dav/SabreDAV/lib/Sabre/CalDAV/Exception/InvalidComponentType.php

@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * Sabre_CalDAV_Exception_InvalidComponentType
+ *
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_CalDAV_Exception_InvalidComponentType extends Sabre_DAV_Exception_Forbidden {
+
+    /**
+     * Adds in extra information in the xml response.
+     *
+     * This method adds the {CALDAV:}supported-calendar-component as defined in rfc4791
+     *
+     * @param Sabre_DAV_Server $server
+     * @param DOMElement $errorNode
+     * @return void
+     */
+    public function serialize(Sabre_DAV_Server $server,DOMElement $errorNode) {
+
+        $doc = $errorNode->ownerDocument;
+
+        $np = $doc->createElementNS(Sabre_CalDAV_Plugin::NS_CALDAV,'cal:supported-calendar-component');
+        $errorNode->appendChild($np);
+
+    }
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/Collection.php

@@ -0,0 +1,80 @@
+<?php
+
+/**
+ * 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.
+ *
+ * @package Sabre
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_CalDAV_Notifications_Collection extends Sabre_DAV_Collection implements Sabre_CalDAV_Notifications_ICollection {
+
+    /**
+     * The notification backend
+     *
+     * @var Sabre_CalDAV_Backend_NotificationSupport
+     */
+    protected $caldavBackend;
+
+    /**
+     * Principal uri
+     *
+     * @var string
+     */
+    protected $principalUri;
+
+    /**
+     * Constructor
+     *
+     * @param Sabre_CalDAV_Backend_NotificationSupport $caldavBackend
+     * @param string $principalUri
+     */
+    public function __construct(Sabre_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 Sabre_CalDAV_Notifications_Node(
+                $this->caldavBackend,
+                $notification
+            );
+        }
+
+        return $children;
+
+    }
+
+    /**
+     * Returns the name of this object
+     *
+     * @return string
+     */
+    public function getName() {
+
+        return 'notifications';
+
+    }
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/ICollection.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * 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.
+ *
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_CalDAV_Notifications_ICollection extends Sabre_DAV_ICollection {
+
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/INode.php

@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * 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.
+ * 
+ * @package Sabre
+ * @subpackage CalDAV 
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_CalDAV_Notifications_INode {
+
+    /**
+     * This method must return an xml element, using the 
+     * Sabre_CalDAV_Notifications_INotificationType classes.
+     * 
+     * @return Sabre_DAVNotification_INotificationType
+     */
+    function getNotificationType();
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/INotificationType.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * This interface reflects a single notification type.
+ *
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_CalDAV_Notifications_INotificationType extends Sabre_DAV_PropertyInterface {
+
+    /**
+     * Serializes the notification as a single property.
+     *
+     * You should usually just encode the single top-level element of the
+     * notification.
+     *
+     * @param Sabre_DAV_Server $server
+     * @param DOMElement $node
+     * @return void
+     */
+    function serialize(Sabre_DAV_Server $server, \DOMElement $node);
+
+    /**
+     * This method serializes the entire notification, as it is used in the
+     * response body.
+     *
+     * @param Sabre_DAV_Server $server
+     * @param DOMElement $node
+     * @return void
+     */
+    function serializeBody(Sabre_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();
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/Node.php

@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * 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.
+
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_CalDAV_Notifications_Node extends Sabre_DAV_Node implements Sabre_CalDAV_Notifications_INode {
+
+    /**
+     * The notification backend
+     * 
+     * @var Sabre_CalDAV_Backend_NotificationSupport
+     */
+    protected $caldavBackend;
+
+    /**
+     * The actual notification
+     * 
+     * @var Sabre_CalDAV_Notifications_INotificationType 
+     */
+    protected $notification;
+        
+    /**
+     * Constructor
+     *
+     * @param Sabre_CalDAV_Backend_NotificationSupport $caldavBackend
+     * @param Sabre_CalDAV_Notifications_INotificationType $notification
+     */
+    public function __construct(Sabre_CalDAV_Backend_NotificationSupport $caldavBackend, Sabre_CalDAV_Notifications_INotificationType $notification) {        
+
+        $this->caldavBackend = $caldavBackend;
+        $this->notification = $notification;
+
+    }
+
+    /**
+     * Returns the path name for this notification
+     * 
+     * @return id 
+     */
+    public function getName() {
+
+        return $this->notification->getId();
+
+    }
+
+    /**
+     * This method must return an xml element, using the 
+     * Sabre_CalDAV_Notifications_INotificationType classes.
+     * 
+     * @return Sabre_DAVNotification_INotificationType
+     */
+    public function getNotificationType() {
+
+        return $this->notification;
+
+    }
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Notifications/Notification/SystemStatus.php

@@ -0,0 +1,158 @@
+<?php
+
+/**
+ * SystemStatus notification
+ *
+ * This notification can be used to indicate to the user that the system is
+ * down.
+ *
+ * @package Sabre
+ * @subpackage CalDAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_CalDAV_Notifications_Notification_SystemStatus extends Sabre_DAV_Property implements Sabre_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;
+
+    /**
+     * Creates the notification.
+     *
+     * Some kind of unique id should be provided. This is used to generate a
+     * url.
+     *
+     * @param string $id
+     * @param int $type
+     * @param string $description
+     * @param string $href
+     */
+    public function __construct($id, $type = self::TYPE_HIGH, $description = null, $href = null) {
+
+        $this->id = $id;
+        $this->type = $type;
+        $this->description = $description;
+        $this->href = $href;
+
+    }
+
+    /**
+     * Serializes the notification as a single property.
+     *
+     * You should usually just encode the single top-level element of the
+     * notification.
+     *
+     * @param Sabre_DAV_Server $server
+     * @param DOMElement $node
+     * @return void
+     */
+    public function serialize(Sabre_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 Sabre_DAV_Server $server
+     * @param DOMElement $node
+     * @return void
+     */
+    public function serializeBody(Sabre_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;
+
+    }
+
+}

dav/SabreDAV/lib/Sabre/CalDAV/Plugin.php

@@ -162,6 +162,7 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         $server->subscribeEvent('onBrowserPostAction', array($this,'browserPostAction'));
         $server->subscribeEvent('beforeWriteContent', array($this, 'beforeWriteContent'));
         $server->subscribeEvent('beforeCreateFile', array($this, 'beforeCreateFile'));
+        $server->subscribeEvent('beforeMethod', array($this,'beforeMethod'));
 
         $server->xmlNamespaces[self::NS_CALDAV] = 'cal';
         $server->xmlNamespaces[self::NS_CALENDARSERVER] = 'cs';
@@ -172,6 +173,8 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         $server->resourceTypeMapping['Sabre_CalDAV_Schedule_IOutbox'] = '{urn:ietf:params:xml:ns:caldav}schedule-outbox';
         $server->resourceTypeMapping['Sabre_CalDAV_Principal_ProxyRead'] = '{http://calendarserver.org/ns/}calendar-proxy-read';
         $server->resourceTypeMapping['Sabre_CalDAV_Principal_ProxyWrite'] = '{http://calendarserver.org/ns/}calendar-proxy-write';
+        $server->resourceTypeMapping['Sabre_CalDAV_Notifications_ICollection'] = '{' . self::NS_CALENDARSERVER . '}notifications';
+        $server->resourceTypeMapping['Sabre_CalDAV_Notifications_INode'] = '{' . self::NS_CALENDARSERVER . '}notification';
 
         array_push($server->protectedProperties,
 
@@ -195,7 +198,9 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
             // CalendarServer extensions
             '{' . self::NS_CALENDARSERVER . '}getctag',
             '{' . self::NS_CALENDARSERVER . '}calendar-proxy-read-for',
-            '{' . self::NS_CALENDARSERVER . '}calendar-proxy-write-for'
+            '{' . self::NS_CALENDARSERVER . '}calendar-proxy-write-for',
+            '{' . self::NS_CALENDARSERVER . '}notification-URL',
+            '{' . self::NS_CALENDARSERVER . '}notificationtype'
 
         );
     }
@@ -380,8 +385,31 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
 
             }
 
+            // notification-URL property
+            $notificationUrl = '{' . self::NS_CALENDARSERVER . '}notification-URL';
+            if (($index = array_search($notificationUrl, $requestedProperties)) !== false) {
+                $principalId = $node->getName();
+                $calendarHomePath = 'calendars/' . $principalId . '/notifications/';
+                unset($requestedProperties[$index]);
+                $returnedProperties[200][$notificationUrl] = new Sabre_DAV_Property_Href($calendarHomePath);
+            }
+
         } // instanceof IPrincipal
 
+        if ($node instanceof Sabre_CalDAV_Notifications_INode) {
+
+            $propertyName = '{' . self::NS_CALENDARSERVER . '}notificationtype';
+            if (($index = array_search($propertyName, $requestedProperties)) !== false) {
+
+                $returnedProperties[200][$propertyName] =
+                    $node->getNotificationType();
+
+                unset($requestedProperties[$index]);
+
+            }
+
+        } // instanceof Notifications_INode
+
 
         if ($node instanceof Sabre_CalDAV_ICalendarObject) {
             // The calendar-data property is not supposed to be a 'real'
@@ -648,7 +676,7 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         if (!$node instanceof Sabre_CalDAV_ICalendarObject)
             return;
 
-        $this->validateICalendar($data);
+        $this->validateICalendar($data, $path);
 
     }
 
@@ -668,7 +696,49 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         if (!$parentNode instanceof Sabre_CalDAV_Calendar)
             return;
 
-        $this->validateICalendar($data);
+        $this->validateICalendar($data, $path);
+
+    }
+
+    /**
+     * This event is triggered before any HTTP request is handled.
+     *
+     * We use this to intercept GET calls to notification nodes, and return the
+     * proper response.
+     * 
+     * @param string $method 
+     * @param string $path 
+     * @return void 
+     */
+    public function beforeMethod($method, $path) {
+
+        if ($method!=='GET') return;
+
+        try {
+            $node = $this->server->tree->getNodeForPath($path);
+        } catch (Sabre_DAV_Exception_NotFound $e) {
+            return;
+        }
+
+        if (!$node instanceof Sabre_CalDAV_Notifications_INode)
+            return;
+
+        $dom = new DOMDocument('1.0', 'UTF-8');
+        $dom->formatOutput = true;
+
+        $root = $dom->createElement('cs:notification');
+        foreach($this->server->xmlNamespaces as $namespace => $prefix) {
+            $root->setAttribute('xmlns:' . $prefix, $namespace);
+        }
+
+        $dom->appendChild($root);
+        $node->getNotificationType()->serializeBody($this->server, $root);
+
+        $this->server->httpResponse->setHeader('Content-Type','application/xml');
+        $this->server->httpResponse->sendStatus(200);
+        $this->server->httpResponse->sendBody($dom->saveXML());
+
+        return false;
 
     }
 
@@ -678,9 +748,10 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
      * An exception is thrown if it's not.
      *
      * @param resource|string $data
+     * @param string $path
      * @return void
      */
-    protected function validateICalendar(&$data) {
+    protected function validateICalendar(&$data, $path) {
 
         // If it's a stream, we convert it to a string first.
         if (is_resource($data)) {
@@ -704,6 +775,11 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
             throw new Sabre_DAV_Exception_UnsupportedMediaType('This collection can only support iCalendar objects.');
         }
 
+        // Get the Supported Components for the target calendar
+        list($parentPath,$object) = Sabre_Dav_URLUtil::splitPath($path);
+        $calendarProperties = $this->server->getProperties($parentPath,array('{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set'));
+        $supportedComponents = $calendarProperties['{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set']->getValue();
+
         $foundType = null;
         $foundUID = null;
         foreach($vobj->getComponents() as $component) {
@@ -715,6 +791,9 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
                 case 'VJOURNAL' :
                     if (is_null($foundType)) {
                         $foundType = $component->name;
+                        if (!in_array($foundType, $supportedComponents)) {
+                            throw new Sabre_CalDAV_Exception_InvalidComponentType('This calendar only supports ' . implode(', ', $supportedComponents) . '. We found a ' . $foundType);
+                        }
                         if (!isset($component->UID)) {
                             throw new Sabre_DAV_Exception_BadRequest('Every ' . $component->name . ' component must have an UID');
                         }
@@ -756,7 +835,7 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
             throw new Sabre_DAV_Exception_BadRequest('The Recipient: header must be specified when making POST requests');
         }
 
-        if (!preg_match('/^mailto:(.*)@(.*)$/', $originator)) {
+        if (!preg_match('/^mailto:(.*)@(.*)$/i', $originator)) {
             throw new Sabre_DAV_Exception_BadRequest('Originator must start with mailto: and must be valid email address');
         }
         $originator = substr($originator,7);
@@ -765,7 +844,7 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         foreach($recipients as $k=>$recipient) {
 
             $recipient = trim($recipient);
-            if (!preg_match('/^mailto:(.*)@(.*)$/', $recipient)) {
+            if (!preg_match('/^mailto:(.*)@(.*)$/i', $recipient)) {
                 throw new Sabre_DAV_Exception_BadRequest('Recipients must start with mailto: and must be valid email address');
             }
             $recipient = substr($recipient, 7);
@@ -813,9 +892,10 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
         }
 
         if (in_array($method, array('REQUEST','REPLY','ADD','CANCEL')) && $componentType==='VEVENT') {
-            $this->iMIPMessage($originator, $recipients, $vObject, $principal);
+            $result = $this->iMIPMessage($originator, $recipients, $vObject, $principal);
             $this->server->httpResponse->sendStatus(200);
-            $this->server->httpResponse->sendBody('Messages sent');
+            $this->server->httpResponse->setHeader('Content-Type','application/xml');
+            $this->server->httpResponse->sendBody($this->generateScheduleResponse($result));
         } else {
             throw new Sabre_DAV_Exception_NotImplemented('This iTIP method is currently not implemented');
         }
@@ -825,18 +905,81 @@ class Sabre_CalDAV_Plugin extends Sabre_DAV_ServerPlugin {
     /**
      * Sends an iMIP message by email.
      *
+     * This method must return an array with status codes per recipient.
+     * This should look something like:
+     *
+     * array(
+     *    'user1@example.org' => '2.0;Success'
+     * )
+     *
+     * Formatting for this status code can be found at:
+     * https://tools.ietf.org/html/rfc5545#section-3.8.8.3
+     *
+     * A list of valid status codes can be found at:
+     * https://tools.ietf.org/html/rfc5546#section-3.6
+     *
      * @param string $originator
      * @param array $recipients
      * @param Sabre_VObject_Component $vObject
-     * @param string $principal Principal url
-     * @return void
+     * @return array
      */
     protected function iMIPMessage($originator, array $recipients, Sabre_VObject_Component $vObject, $principal) {
 
         if (!$this->imipHandler) {
-            throw new Sabre_DAV_Exception_NotImplemented('No iMIP handler is setup on this server.');
+            $resultStatus = '5.2;This server does not support this operation';
+        } else {
+            $this->imipHandler->sendMessage($originator, $recipients, $vObject, $principal);
+            $resultStatus = '2.0;Success';
         }
-        $this->imipHandler->sendMessage($originator, $recipients, $vObject, $principal);
+
+        $result = array();
+        foreach($recipients as $recipient) {
+            $result[$recipient] = $resultStatus;
+        }
+
+        return $result;
+
+    }
+
+    /**
+     * Generates a schedule-response XML body
+     *
+     * The recipients array is a key->value list, containing email addresses
+     * and iTip status codes. See the iMIPMessage method for a description of
+     * the value.
+     *
+     * @param array $recipients
+     * @return string
+     */
+    public function generateScheduleResponse(array $recipients) {
+
+        $dom = new DOMDocument('1.0','utf-8');
+        $dom->formatOutput = true;
+        $xscheduleResponse = $dom->createElement('cal:schedule-response');
+        $dom->appendChild($xscheduleResponse);
+
+        foreach($this->server->xmlNamespaces as $namespace=>$prefix) {
+
+            $xscheduleResponse->setAttribute('xmlns:' . $prefix, $namespace);
+
+        }
+
+        foreach($recipients as $recipient=>$status) {
+            $xresponse = $dom->createElement('cal:response');
+
+            $xrecipient = $dom->createElement('cal:recipient');
+            $xrecipient->appendChild($dom->createTextNode($recipient));
+            $xresponse->appendChild($xrecipient);
+
+            $xrequestStatus = $dom->createElement('cal:request-status');
+            $xrequestStatus->appendChild($dom->createTextNode($status));
+            $xresponse->appendChild($xrequestStatus);
+
+            $xscheduleResponse->appendChild($xresponse);
+
+        }
+
+        return $dom->saveXML();
 
     }
 

dav/SabreDAV/lib/Sabre/CalDAV/UserCalendars.php

@@ -21,7 +21,7 @@ class Sabre_CalDAV_UserCalendars implements Sabre_DAV_IExtendedCollection, Sabre
     /**
      * CalDAV backend
      *
-     * @var Sabre_CalDAV_Backend_Abstract
+     * @var Sabre_CalDAV_Backend_BackendInterface
      */
     protected $caldavBackend;
 
@@ -36,10 +36,10 @@ class Sabre_CalDAV_UserCalendars implements Sabre_DAV_IExtendedCollection, Sabre
      * Constructor
      *
      * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param Sabre_CalDAV_Backend_Abstract $caldavBackend
+     * @param Sabre_CalDAV_Backend_BackendInterface $caldavBackend
      * @param mixed $userUri
      */
-    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_Abstract $caldavBackend, $userUri) {
+    public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, Sabre_CalDAV_Backend_BackendInterface $caldavBackend, $userUri) {
 
         $this->principalBackend = $principalBackend;
         $this->caldavBackend = $caldavBackend;
@@ -171,6 +171,11 @@ class Sabre_CalDAV_UserCalendars implements Sabre_DAV_IExtendedCollection, Sabre
             $objs[] = new Sabre_CalDAV_Calendar($this->principalBackend, $this->caldavBackend, $calendar);
         }
         $objs[] = new Sabre_CalDAV_Schedule_Outbox($this->principalInfo['uri']);
+
+        // We're adding a notifications node, if it's supported by the backend.
+        if ($this->caldavBackend instanceof Sabre_CalDAV_Backend_NotificationSupport) {
+            $objs[] = new Sabre_CalDAV_Notifications_Collection($this->caldavBackend, $this->principalInfo['uri']);
+        }
         return $objs;
 
     }

dav/SabreDAV/lib/Sabre/CardDAV/Backend/PDO.php

@@ -238,7 +238,7 @@ class Sabre_CardDAV_Backend_PDO extends Sabre_CardDAV_Backend_Abstract {
      * Creates a new card.
      *
      * The addressbook id will be passed as the first argument. This is the
-     * same id as it is returned from the getCards method.
+     * same id as it is returned from the getAddressbooksForUser method.
      *
      * The cardUri is a base uri, and doesn't include the full path. The
      * cardData argument is the vcard body, and is passed as a string.

dav/SabreDAV/lib/Sabre/CardDAV/Plugin.php

@@ -358,6 +358,10 @@ class Sabre_CardDAV_Plugin extends Sabre_DAV_ServerPlugin {
             throw new Sabre_DAV_Exception_UnsupportedMediaType('This collection can only support vcard objects.');
         }
 
+        if (!isset($vobj->UID)) {
+            throw new Sabre_DAV_Exception_BadRequest('Every vcard must have an UID.');
+        }
+
     }
 
 
@@ -440,6 +444,8 @@ class Sabre_CardDAV_Plugin extends Sabre_DAV_ServerPlugin {
 
         $vcard = Sabre_VObject_Reader::read($vcardData);
 
+        if (!$filters) return true;
+
         foreach($filters as $filter) {
 
             $isDefined = isset($vcard->{$filter['name']});

dav/SabreDAV/lib/Sabre/DAV/Locks/Plugin.php

@@ -293,7 +293,10 @@ class Sabre_DAV_Locks_Plugin extends Sabre_DAV_ServerPlugin {
             $this->server->tree->getNodeForPath($uri);
 
             // We need to call the beforeWriteContent event for RFC3744
-            $this->server->broadcastEvent('beforeWriteContent',array($uri));
+            // Edit: looks like this is not used, and causing problems now.
+            //
+            // See Issue 222
+            // $this->server->broadcastEvent('beforeWriteContent',array($uri));
 
         } catch (Sabre_DAV_Exception_NotFound $e) {
 

dav/SabreDAV/lib/Sabre/DAV/Property.php

@@ -11,7 +11,7 @@
  * @author Evert Pot (http://www.rooftopsolutions.nl/)
  * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
  */
-abstract class Sabre_DAV_Property {
+abstract class Sabre_DAV_Property implements Sabre_DAV_PropertyInterface {
 
     abstract function serialize(Sabre_DAV_Server $server, DOMElement $prop);
 

dav/SabreDAV/lib/Sabre/DAV/Property/Response.php

@@ -138,7 +138,7 @@ class Sabre_DAV_Property_Response extends Sabre_DAV_Property implements Sabre_DA
                 if (is_scalar($propertyValue)) {
                     $text = $document->createTextNode($propertyValue);
                     $currentProperty->appendChild($text);
-                } elseif ($propertyValue instanceof Sabre_DAV_Property) {
+                } elseif ($propertyValue instanceof Sabre_DAV_PropertyInterface) {
                     $propertyValue->serialize($server,$currentProperty);
                 } elseif (!is_null($propertyValue)) {
                     throw new Sabre_DAV_Exception('Unknown property value type: ' . gettype($propertyValue) . ' for property: ' . $propertyName);

dav/SabreDAV/lib/Sabre/DAV/PropertyInterface.php

@@ -0,0 +1,21 @@
+<?php
+
+/**
+ * PropertyInterface
+ *
+ * Implement this interface to create new complex properties
+ *
+ * @package Sabre
+ * @subpackage DAV
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+interface Sabre_DAV_PropertyInterface {
+
+    public function serialize(Sabre_DAV_Server $server, DOMElement $prop);
+
+    static function unserialize(DOMElement $prop); 
+
+}
+

dav/SabreDAV/lib/Sabre/DAV/Server.php

@@ -207,6 +207,10 @@ class Sabre_DAV_Server {
 
         } catch (Exception $e) {
 
+            try {
+                $this->broadcastEvent('exception', array($e));
+            } catch (Exception $ignore) {
+            }
             $DOM = new DOMDocument('1.0','utf-8');
             $DOM->formatOutput = true;
 
@@ -508,7 +512,7 @@ class Sabre_DAV_Server {
 
         if (!$this->checkPreconditions(true)) return false;
 
-        if (!($node instanceof Sabre_DAV_IFile)) throw new Sabre_DAV_Exception_NotImplemented('GET is only implemented on File objects');
+        if (!$node instanceof Sabre_DAV_IFile) throw new Sabre_DAV_Exception_NotImplemented('GET is only implemented on File objects');
         $body = $node->get();
 
         // Converting string into stream, if needed.

dav/SabreDAV/lib/Sabre/DAV/Tree/Filesystem.php

@@ -42,9 +42,9 @@ class Sabre_DAV_Tree_Filesystem extends Sabre_DAV_Tree {
         $realPath = $this->getRealPath($path);
         if (!file_exists($realPath)) throw new Sabre_DAV_Exception_NotFound('File at location ' . $realPath . ' not found');
         if (is_dir($realPath)) {
-            return new Sabre_DAV_FS_Directory($path);
+            return new Sabre_DAV_FS_Directory($realPath);
         } else {
-            return new Sabre_DAV_FS_File($path);
+            return new Sabre_DAV_FS_File($realPath);
         }
 
     }

dav/SabreDAV/lib/Sabre/VObject/Property/DateTime.php

@@ -204,49 +204,17 @@ class Sabre_VObject_Property_DateTime extends Sabre_VObject_Property {
             );
         }
 
-        try {
-            // tzid an Olson identifier?
-            $tz = new DateTimeZone($tzid->value);
-        } catch (Exception $e) {
-
-            // Not an Olson id, we're going to try to find the information 
-            // through the time zone name map.
-            $newtzid = Sabre_VObject_WindowsTimezoneMap::lookup($tzid->value);
-            if (is_null($newtzid)) {
-
-                // Not a well known time zone name either, we're going to try 
-                // to find the information through the VTIMEZONE object.
-
-                // First we find the root object
-                $root = $property;
-                while($root->parent) {
-                    $root = $root->parent;
-                }
-
-                if (isset($root->VTIMEZONE)) {
-                    foreach($root->VTIMEZONE as $vtimezone) {
-                        if (((string)$vtimezone->TZID) == $tzid) {
-                            if (isset($vtimezone->{'X-LIC-LOCATION'})) {
-                                $newtzid = (string)$vtimezone->{'X-LIC-LOCATION'};
-                            } else {
-                                // No libical location specified. As a last resort we could 
-                                // try matching $vtimezone's DST rules against all known 
-                                // time zones returned by DateTimeZone::list*
-
-                                // TODO
-                            }
-                        }
-                    }
-                }
-            }
-
-            try {
-                $tz = new DateTimeZone($newtzid);
-            } catch (Exception $e) {
-                // If all else fails, we use the default PHP timezone
-                $tz = new DateTimeZone(date_default_timezone_get()); 
-            }
+        // To look up the timezone, we must first find the VCALENDAR component.
+        $root = $property;
+        while($root->parent) {
+            $root = $root->parent;
         }
+        if ($root->name === 'VCALENDAR') {
+            $tz = Sabre_VObject_TimeZoneUtil::getTimeZone((string)$tzid, $root);
+        } else {
+            $tz = Sabre_VObject_TimeZoneUtil::getTimeZone((string)$tzid);
+        }
+
         $dt = new DateTime($dateStr, $tz);
         $dt->setTimeZone($tz);
 

dav/SabreDAV/lib/Sabre/VObject/TimeZoneUtil.php

@@ -0,0 +1,351 @@
+<?php
+
+/**
+ * Time zone name translation
+ *
+ * This file translates well-known time zone names into "Olson database" time zone names.
+ *
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Frank Edelhaeuser (fedel@users.sourceforge.net)
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_TimeZoneUtil {
+
+    public static $map = array(
+
+        // from http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/zone_tzid.html
+        // snapshot taken on 2012/01/16
+
+        // windows
+        'AUS Central Standard Time'=>'Australia/Darwin',
+        'AUS Eastern Standard Time'=>'Australia/Sydney',
+        'Afghanistan Standard Time'=>'Asia/Kabul',
+        'Alaskan Standard Time'=>'America/Anchorage',
+        'Arab Standard Time'=>'Asia/Riyadh',
+        'Arabian Standard Time'=>'Asia/Dubai',
+        'Arabic Standard Time'=>'Asia/Baghdad',
+        'Argentina Standard Time'=>'America/Buenos_Aires',
+        'Armenian Standard Time'=>'Asia/Yerevan',
+        'Atlantic Standard Time'=>'America/Halifax',
+        'Azerbaijan Standard Time'=>'Asia/Baku',
+        'Azores Standard Time'=>'Atlantic/Azores',
+        'Bangladesh Standard Time'=>'Asia/Dhaka',
+        'Canada Central Standard Time'=>'America/Regina',
+        'Cape Verde Standard Time'=>'Atlantic/Cape_Verde',
+        'Caucasus Standard Time'=>'Asia/Yerevan',
+        'Cen. Australia Standard Time'=>'Australia/Adelaide',
+        'Central America Standard Time'=>'America/Guatemala',
+        'Central Asia Standard Time'=>'Asia/Almaty',
+        'Central Brazilian Standard Time'=>'America/Cuiaba',
+        'Central Europe Standard Time'=>'Europe/Budapest',
+        'Central European Standard Time'=>'Europe/Warsaw',
+        'Central Pacific Standard Time'=>'Pacific/Guadalcanal',
+        'Central Standard Time'=>'America/Chicago',
+        'Central Standard Time (Mexico)'=>'America/Mexico_City',
+        'China Standard Time'=>'Asia/Shanghai',
+        'Dateline Standard Time'=>'Etc/GMT+12',
+        'E. Africa Standard Time'=>'Africa/Nairobi',
+        'E. Australia Standard Time'=>'Australia/Brisbane',
+        'E. Europe Standard Time'=>'Europe/Minsk',
+        'E. South America Standard Time'=>'America/Sao_Paulo',
+        'Eastern Standard Time'=>'America/New_York',
+        'Egypt Standard Time'=>'Africa/Cairo',
+        'Ekaterinburg Standard Time'=>'Asia/Yekaterinburg',
+        'FLE Standard Time'=>'Europe/Kiev',
+        'Fiji Standard Time'=>'Pacific/Fiji',
+        'GMT Standard Time'=>'Europe/London',
+        'GTB Standard Time'=>'Europe/Istanbul',
+        'Georgian Standard Time'=>'Asia/Tbilisi',
+        'Greenland Standard Time'=>'America/Godthab',
+        'Greenwich Standard Time'=>'Atlantic/Reykjavik',
+        'Hawaiian Standard Time'=>'Pacific/Honolulu',
+        'India Standard Time'=>'Asia/Calcutta',
+        'Iran Standard Time'=>'Asia/Tehran',
+        'Israel Standard Time'=>'Asia/Jerusalem',
+        'Jordan Standard Time'=>'Asia/Amman',
+        'Kamchatka Standard Time'=>'Asia/Kamchatka',
+        'Korea Standard Time'=>'Asia/Seoul',
+        'Magadan Standard Time'=>'Asia/Magadan',
+        'Mauritius Standard Time'=>'Indian/Mauritius',
+        'Mexico Standard Time'=>'America/Mexico_City',
+        'Mexico Standard Time 2'=>'America/Chihuahua',
+        'Mid-Atlantic Standard Time'=>'Etc/GMT+2',
+        'Middle East Standard Time'=>'Asia/Beirut',
+        'Montevideo Standard Time'=>'America/Montevideo',
+        'Morocco Standard Time'=>'Africa/Casablanca',
+        'Mountain Standard Time'=>'America/Denver',
+        'Mountain Standard Time (Mexico)'=>'America/Chihuahua',
+        'Myanmar Standard Time'=>'Asia/Rangoon',
+        'N. Central Asia Standard Time'=>'Asia/Novosibirsk',
+        'Namibia Standard Time'=>'Africa/Windhoek',
+        'Nepal Standard Time'=>'Asia/Katmandu',
+        'New Zealand Standard Time'=>'Pacific/Auckland',
+        'Newfoundland Standard Time'=>'America/St_Johns',
+        'North Asia East Standard Time'=>'Asia/Irkutsk',
+        'North Asia Standard Time'=>'Asia/Krasnoyarsk',
+        'Pacific SA Standard Time'=>'America/Santiago',
+        'Pacific Standard Time'=>'America/Los_Angeles',
+        'Pacific Standard Time (Mexico)'=>'America/Santa_Isabel',
+        'Pakistan Standard Time'=>'Asia/Karachi',
+        'Paraguay Standard Time'=>'America/Asuncion',
+        'Romance Standard Time'=>'Europe/Paris',
+        'Russian Standard Time'=>'Europe/Moscow',
+        'SA Eastern Standard Time'=>'America/Cayenne',
+        'SA Pacific Standard Time'=>'America/Bogota',
+        'SA Western Standard Time'=>'America/La_Paz',
+        'SE Asia Standard Time'=>'Asia/Bangkok',
+        'Samoa Standard Time'=>'Pacific/Apia',
+        'Singapore Standard Time'=>'Asia/Singapore',
+        'South Africa Standard Time'=>'Africa/Johannesburg',
+        'Sri Lanka Standard Time'=>'Asia/Colombo',
+        'Syria Standard Time'=>'Asia/Damascus',
+        'Taipei Standard Time'=>'Asia/Taipei',
+        'Tasmania Standard Time'=>'Australia/Hobart',
+        'Tokyo Standard Time'=>'Asia/Tokyo',
+        'Tonga Standard Time'=>'Pacific/Tongatapu',
+        'US Eastern Standard Time'=>'America/Indianapolis',
+        'US Mountain Standard Time'=>'America/Phoenix',
+        'UTC'=>'Etc/GMT',
+        'UTC+12'=>'Etc/GMT-12',
+        'UTC-02'=>'Etc/GMT+2',
+        'UTC-11'=>'Etc/GMT+11',
+        'Ulaanbaatar Standard Time'=>'Asia/Ulaanbaatar',
+        'Venezuela Standard Time'=>'America/Caracas',
+        'Vladivostok Standard Time'=>'Asia/Vladivostok',
+        'W. Australia Standard Time'=>'Australia/Perth',
+        'W. Central Africa Standard Time'=>'Africa/Lagos',
+        'W. Europe Standard Time'=>'Europe/Berlin',
+        'West Asia Standard Time'=>'Asia/Tashkent',
+        'West Pacific Standard Time'=>'Pacific/Port_Moresby',
+        'Yakutsk Standard Time'=>'Asia/Yakutsk',
+
+        // Microsoft exchange timezones
+        // Source:
+        // http://msdn.microsoft.com/en-us/library/ms988620%28v=exchg.65%29.aspx
+        //
+        // Correct timezones deduced with help from:
+        // http://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+        'Universal Coordinated Time' => 'UTC',
+        'Casablanca, Monrovia' => 'Africa/Casablanca',
+        'Greenwich Mean Time: Dublin, Edinburgh, Lisbon, London' => 'Europe/Lisbon',
+        'Greenwich Mean Time; Dublin, Edinburgh, London' =>  'Europe/London',
+        'Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna' => 'Europe/Berlin',
+        'Belgrade, Pozsony, Budapest, Ljubljana, Prague' => 'Europe/Prague',
+        'Brussels, Copenhagen, Madrid, Paris' => 'Europe/Paris',
+        'Paris, Madrid, Brussels, Copenhagen' => 'Europe/Paris',
+        'Prague, Central Europe' => 'Europe/Prague',
+        'Sarajevo, Skopje, Sofija, Vilnius, Warsaw, Zagreb' => 'Europe/Sarajevo',
+        'West Central Africa' => 'Africa/Luanda', // This was a best guess
+        'Athens, Istanbul, Minsk' => 'Europe/Athens',
+        'Bucharest' => 'Europe/Bucharest',
+        'Cairo' => 'Africa/Cairo',
+        'Harare, Pretoria' => 'Africa/Harare',
+        'Helsinki, Riga, Tallinn' => 'Europe/Helsinki',
+        'Israel, Jerusalem Standard Time' => 'Asia/Jerusalem',
+        'Baghdad' => 'Asia/Baghdad',
+        'Arab, Kuwait, Riyadh' => 'Asia/Kuwait',
+        'Moscow, St. Petersburg, Volgograd' => 'Europe/Moscow',
+        'East Africa, Nairobi' => 'Africa/Nairobi',
+        'Tehran' => 'Asia/Tehran',
+        'Abu Dhabi, Muscat' => 'Asia/Muscat', // Best guess
+        'Baku, Tbilisi, Yerevan' => 'Asia/Baku',
+        'Kabul' => 'Asia/Kabul',
+        'Ekaterinburg' => 'Asia/Yekaterinburg',
+        'Islamabad, Karachi, Tashkent' => 'Asia/Karachi',
+        'Kolkata, Chennai, Mumbai, New Delhi, India Standard Time' => 'Asia/Calcutta',
+        'Kathmandu, Nepal' => 'Asia/Kathmandu',
+        'Almaty, Novosibirsk, North Central Asia' => 'Asia/Almaty',
+        'Astana, Dhaka' => 'Asia/Dhaka',
+        'Sri Jayawardenepura, Sri Lanka' => 'Asia/Colombo',
+        'Rangoon' => 'Asia/Rangoon',
+        'Bangkok, Hanoi, Jakarta' => 'Asia/Bangkok',
+        'Krasnoyarsk' => 'Asia/Krasnoyarsk',
+        'Beijing, Chongqing, Hong Kong SAR, Urumqi' => 'Asia/Shanghai',
+        'Irkutsk, Ulaan Bataar' => 'Asia/Irkutsk',
+        'Kuala Lumpur, Singapore' => 'Asia/Singapore',
+        'Perth, Western Australia' => 'Australia/Perth',
+        'Taipei' => 'Asia/Taipei',
+        'Osaka, Sapporo, Tokyo' => 'Asia/Tokyo',
+        'Seoul, Korea Standard time' => 'Asia/Seoul',
+        'Yakutsk' => 'Asia/Yakutsk',
+        'Adelaide, Central Australia' => 'Australia/Adelaide',
+        'Darwin' => 'Australia/Darwin',
+        'Brisbane, East Australia' => 'Australia/Brisbane',
+        'Canberra, Melbourne, Sydney, Hobart (year 2000 only)' => 'Australia/Sydney',
+        'Guam, Port Moresby' => 'Pacific/Guam',
+        'Hobart, Tasmania' => 'Australia/Hobart',
+        'Vladivostok' => 'Asia/Vladivostok',
+        'Magadan, Solomon Is., New Caledonia' => 'Asia/Magadan',
+        'Auckland, Wellington' => 'Pacific/Auckland',
+        'Fiji Islands, Kamchatka, Marshall Is.' => 'Pacific/Fiji',
+        'Nuku\'alofa, Tonga' => 'Pacific/Tongatapu',
+        'Azores' => 'Atlantic/Azores',
+        'Cape Verde Is.' => 'Atlantic/Cape_Verde',
+        'Mid-Atlantic' => 'America/Noronha',
+        'Brasilia' => 'America/Sao_Paulo', // Best guess
+        'Buenos Aires' => 'America/Argentina/Buenos_Aires',
+        'Greenland' => 'America/Godthab',
+        'Newfoundland' => 'America/St_Johns',
+        'Atlantic Time (Canada)' => 'America/Halifax',
+        'Caracas, La Paz' => 'America/Caracas',
+        'Santiago' => 'America/Santiago',
+        'Bogota, Lima, Quito' => 'America/Bogota',
+        'Eastern Time (US & Canada)' => 'America/New_York',
+        'Indiana (East)' => 'America/Indiana/Indianapolis',
+        'Central America' => 'America/Guatemala',
+        'Central Time (US & Canada)' => 'America/Chicago',
+        'Mexico City, Tegucigalpa' => 'America/Mexico_City',
+        'Saskatchewan' => 'America/Edmonton',
+        'Arizona' => 'America/Phoenix',
+        'Mountain Time (US & Canada)' => 'America/Denver', // Best guess
+        'Pacific Time (US & Canada); Tijuana' => 'America/Los_Angeles', // Best guess
+        'Alaska' => 'America/Anchorage',
+        'Hawaii' => 'Pacific/Honolulu',
+        'Midway Island, Samoa' => 'Pacific/Midway',
+        'Eniwetok, Kwajalein, Dateline Time' => 'Pacific/Kwajalein',
+
+    );
+
+    public static $microsoftExchangeMap = array(
+        0  => 'UTC',
+        31 => 'Africa/Casablanca',
+        2  => 'Europe/Lisbon',
+        1  => 'Europe/London',
+        4  => 'Europe/Berlin',
+        6  => 'Europe/Prague',
+        3  => 'Europe/Paris',
+        69 => 'Africa/Luanda', // This was a best guess
+        7  => 'Europe/Athens',
+        5  => 'Europe/Bucharest',
+        49 => 'Africa/Cairo',
+        50 => 'Africa/Harare',
+        59 => 'Europe/Helsinki',
+        27 => 'Asia/Jerusalem',
+        26 => 'Asia/Baghdad',
+        74 => 'Asia/Kuwait',
+        51 => 'Europe/Moscow',
+        56 => 'Africa/Nairobi',
+        25 => 'Asia/Tehran',
+        24 => 'Asia/Muscat', // Best guess
+        54 => 'Asia/Baku',
+        48 => 'Asia/Kabul',
+        58 => 'Asia/Yekaterinburg',
+        47 => 'Asia/Karachi',
+        23 => 'Asia/Calcutta',
+        62 => 'Asia/Kathmandu',
+        46 => 'Asia/Almaty',
+        71 => 'Asia/Dhaka',
+        66 => 'Asia/Colombo',
+        61 => 'Asia/Rangoon',
+        22 => 'Asia/Bangkok',
+        64 => 'Asia/Krasnoyarsk',
+        45 => 'Asia/Shanghai',
+        63 => 'Asia/Irkutsk',
+        21 => 'Asia/Singapore',
+        73 => 'Australia/Perth',
+        75 => 'Asia/Taipei',
+        20 => 'Asia/Tokyo',
+        72 => 'Asia/Seoul',
+        70 => 'Asia/Yakutsk',
+        19 => 'Australia/Adelaide',
+        44 => 'Australia/Darwin',
+        18 => 'Australia/Brisbane',
+        76 => 'Australia/Sydney',
+        43 => 'Pacific/Guam',
+        42 => 'Australia/Hobart',
+        68 => 'Asia/Vladivostok',
+        41 => 'Asia/Magadan',
+        17 => 'Pacific/Auckland',
+        40 => 'Pacific/Fiji',
+        67 => 'Pacific/Tongatapu',
+        29 => 'Atlantic/Azores',
+        53 => 'Atlantic/Cape_Verde',
+        30 => 'America/Noronha',
+         8 => 'America/Sao_Paulo', // Best guess
+        32 => 'America/Argentina/Buenos_Aires',
+        69 => 'America/Godthab',
+        28 => 'America/St_Johns',
+         9 => 'America/Halifax',
+        33 => 'America/Caracas',
+        65 => 'America/Santiago',
+        35 => 'America/Bogota',
+        10 => 'America/New_York',
+        34 => 'America/Indiana/Indianapolis',
+        55 => 'America/Guatemala',
+        11 => 'America/Chicago',
+        37 => 'America/Mexico_City',
+        36 => 'America/Edmonton',
+        38 => 'America/Phoenix',
+        12 => 'America/Denver', // Best guess
+        13 => 'America/Los_Angeles', // Best guess
+        14 => 'America/Anchorage',
+        15 => 'Pacific/Honolulu',
+        16 => 'Pacific/Midway',
+        39 => 'Pacific/Kwajalein',
+    );
+
+    /**
+     * This method will try to find out the correct timezone for an iCalendar
+     * date-time value.
+     *
+     * You must pass the contents of the TZID parameter, as well as the full
+     * calendar.
+     *
+     * If the lookup fails, this method will return UTC.
+     *
+     * @param string $tzid
+     * @param Sabre_VObject_Component $vcalendar
+     * @return DateTimeZone
+     */
+    static public function getTimeZone($tzid, Sabre_VObject_Component $vcalendar = null) {
+
+        // First we will just see if the tzid is a support timezone identifier.
+        try {
+            return new DateTimeZone($tzid);
+        } catch (\Exception $e) {
+        }
+
+        // Next, we check if the tzid is somewhere in our tzid map.
+        if (isset(self::$map[$tzid])) {
+            return new DateTimeZone(self::$map[$tzid]);
+        }
+
+        if ($vcalendar) {
+
+            // If that didn't work, we will scan VTIMEZONE objects
+            foreach($vcalendar->select('VTIMEZONE') as $vtimezone) {
+
+                if ((string)$vtimezone->TZID === $tzid) {
+
+                    // Some clients add 'X-LIC-LOCATION' with the olson name.
+                    if (isset($vtimezone->{'X-LIC-LOCATION'})) {
+                        try {
+                            return new DateTimeZone($vtimezone->{'X-LIC-LOCATION'});
+                        } catch (\Exception $e) {
+                        }
+
+                    }
+                    // Microsoft may add a magic number, which we also have an
+                    // answer for.
+                    if (isset($vtimezone->{'X-MICROSOFT-CDO-TZID'})) {
+                        if (isset(self::$microsoftExchangeMap[(int)$vtimezone->{'X-MICROSOFT-CDO-TZID'}->value])) {
+                            return new DateTimeZone(self::$microsoftExchangeMap[(int)$vtimezone->{'X-MICROSOFT-CDO-TZID'}->value]);
+                        }
+                    }
+                }
+
+            }
+
+        }
+
+        // If we got all the way here, we default to UTC.
+        return new DateTimeZone(date_default_timezone_get());
+
+
+    }
+
+
+}

dav/SabreDAV/lib/Sabre/VObject/includes.php

@@ -24,8 +24,8 @@ include __DIR__ . '/Parameter.php';
 include __DIR__ . '/ParseException.php';
 include __DIR__ . '/Reader.php';
 include __DIR__ . '/RecurrenceIterator.php';
+include __DIR__ . '/TimeZoneUtil.php';
 include __DIR__ . '/Version.php';
-include __DIR__ . '/WindowsTimezoneMap.php';
 include __DIR__ . '/Element.php';
 include __DIR__ . '/Property.php';
 include __DIR__ . '/Component.php';

dav/SabreDAV/tests/Sabre/CalDAV/Backend/Mock.php

@@ -1,14 +1,16 @@
 <?php
 
-class Sabre_CalDAV_Backend_Mock extends Sabre_CalDAV_Backend_Abstract {
+class Sabre_CalDAV_Backend_Mock extends Sabre_CalDAV_Backend_Abstract implements Sabre_CalDAV_Backend_NotificationSupport {
 
     private $calendarData;
     private $calendars;
+    private $notifications;
 
-    function __construct(array $calendars, array $calendarData) {
+    function __construct(array $calendars, array $calendarData, array $notifications = array()) {
 
         $this->calendars = $calendars;
         $this->calendarData = $calendarData;
+        $this->notifications = $notifications;
 
     }
 
@@ -58,7 +60,15 @@ class Sabre_CalDAV_Backend_Mock extends Sabre_CalDAV_Backend_Abstract {
      */
     function createCalendar($principalUri,$calendarUri,array $properties) {
 
-        throw new Exception('Not implemented');
+        $id = Sabre_DAV_UUIDUtil::getUUID();
+        $this->calendars[] = array_merge(array(
+            'id' => $id,
+            'principaluri' => $principalUri,
+            'uri' => $calendarUri,
+            '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet(array('VEVENT','VTODO')),
+        ), $properties);
+
+        return $id;
 
     }
 
@@ -112,7 +122,11 @@ class Sabre_CalDAV_Backend_Mock extends Sabre_CalDAV_Backend_Abstract {
      */
     public function deleteCalendar($calendarId) {
 
-        throw new Exception('Not implemented');
+        foreach($this->calendars as $k=>$calendar) {
+            if ($calendar['id'] === $calendarId) {
+                unset($this->calendars[$k]);
+            }
+        }
 
     }
 
@@ -227,4 +241,37 @@ class Sabre_CalDAV_Backend_Mock extends Sabre_CalDAV_Backend_Abstract {
 
     }
 
+    /**
+     * Returns a list of notifications for a given principal url.
+     *
+     * The returned array should only consist of implementations of
+     * Sabre_CalDAV_Notifications_INotificationType.
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    public function getNotificationsForPrincipal($principalUri) {
+
+        if (isset($this->notifications[$principalUri])) {
+            return $this->notifications[$principalUri];
+        }
+        return array();
+
+    }
+
+    /**
+     * This deletes a specific notifcation.
+     *
+     * This may be called by a client once it deems a notification handled.
+     *
+     * @param string $principalUri
+     * @param Sabre_CalDAV_Notifications_INotificationType $notification
+     * @return void
+     */
+    public function deleteNotification($principalUri, Sabre_CalDAV_Notifications_INotificationType $notification) {
+
+        throw new Sabre_DAV_Exception_NotImplemented('This doesn\'t work!');
+
+    }
+
 }

dav/SabreDAV/tests/Sabre/CalDAV/ICSExportPluginTest.php

@@ -55,6 +55,56 @@ class Sabre_CalDAV_ICSExportPluginTest extends PHPUnit_Framework_TestCase {
         $this->assertEquals(1,count($obj->VERSION));
         $this->assertEquals(1,count($obj->CALSCALE));
         $this->assertEquals(1,count($obj->PRODID));
+        $this->assertTrue(strpos((string)$obj->PRODID, Sabre_DAV_Version::VERSION)!==false);
+        $this->assertEquals(1,count($obj->VTIMEZONE));
+        $this->assertEquals(1,count($obj->VEVENT));
+
+    }
+    function testBeforeMethodNoVersion() {
+
+        if (!SABRE_HASSQLITE) $this->markTestSkipped('SQLite driver is not available');
+        $cbackend = Sabre_CalDAV_TestUtil::getBackend();
+        $pbackend = new Sabre_DAVACL_MockPrincipalBackend();
+
+        $props = array(
+            'uri'=>'UUID-123467',
+            'principaluri' => 'admin',
+            'id' => 1,
+        );
+        $tree = array(
+            new Sabre_CalDAV_Calendar($pbackend,$cbackend,$props),
+        );
+
+        $p = new Sabre_CalDAV_ICSExportPlugin();
+
+        $s = new Sabre_DAV_Server($tree);
+
+        $s->addPlugin($p);
+        $s->addPlugin(new Sabre_CalDAV_Plugin());
+
+        $h = new Sabre_HTTP_Request(array(
+            'QUERY_STRING' => 'export',
+        ));
+
+        $s->httpRequest = $h;
+        $s->httpResponse = new Sabre_HTTP_ResponseMock();
+
+        Sabre_DAV_Server::$exposeVersion = false;
+        $this->assertFalse($p->beforeMethod('GET','UUID-123467?export'));
+        Sabre_DAV_Server::$exposeVersion = true; 
+
+        $this->assertEquals('HTTP/1.1 200 OK',$s->httpResponse->status);
+        $this->assertEquals(array(
+            'Content-Type' => 'text/calendar',
+        ), $s->httpResponse->headers);
+
+        $obj = Sabre_VObject_Reader::read($s->httpResponse->body);
+
+        $this->assertEquals(5,count($obj->children()));
+        $this->assertEquals(1,count($obj->VERSION));
+        $this->assertEquals(1,count($obj->CALSCALE));
+        $this->assertEquals(1,count($obj->PRODID));
+        $this->assertFalse(strpos((string)$obj->PRODID, Sabre_DAV_Version::VERSION)!==false);
         $this->assertEquals(1,count($obj->VTIMEZONE));
         $this->assertEquals(1,count($obj->VEVENT));
 

dav/SabreDAV/tests/Sabre/CalDAV/Issue220Test.php

@@ -0,0 +1,96 @@
+<?php
+
+/**
+ * This unittest is created to check for an endless loop in Sabre_CalDAV_CalendarQueryValidator
+ *
+ *
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_CalDAV_Issue220Test extends Sabre_DAVServerTest {
+
+    protected $setupCalDAV = true;
+
+    protected $caldavCalendars = array(
+        array(
+            'id' => 1,
+            'name' => 'Calendar',
+            'principaluri' => 'principals/user1',
+            'uri' => 'calendar1',
+        )
+    );
+
+    protected $caldavCalendarObjects = array(
+        1 => array(
+            'event.ics' => array(
+                'calendardata' => 'BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+DTSTART;TZID=Europe/Berlin:20120601T180000
+SUMMARY:Brot backen
+RRULE:FREQ=DAILY;INTERVAL=1;WKST=MO
+TRANSP:OPAQUE
+DURATION:PT20M
+LAST-MODIFIED:20120601T064634Z
+CREATED:20120601T064634Z
+DTSTAMP:20120601T064634Z
+UID:b64f14c5-dccc-4eda-947f-bdb1f763fbcd
+BEGIN:VALARM
+TRIGGER;VALUE=DURATION:-PT5M
+ACTION:DISPLAY
+DESCRIPTION:Default Event Notification
+X-WR-ALARMUID:cd952c1b-b3d6-41fb-b0a6-ec3a1a5bdd58
+END:VALARM
+END:VEVENT
+BEGIN:VEVENT
+DTSTART;TZID=Europe/Berlin:20120606T180000
+SUMMARY:Brot backen
+TRANSP:OPAQUE
+STATUS:CANCELLED
+DTEND;TZID=Europe/Berlin:20120606T182000
+LAST-MODIFIED:20120605T094310Z
+SEQUENCE:1
+RECURRENCE-ID:20120606T160000Z
+UID:b64f14c5-dccc-4eda-947f-bdb1f763fbcd
+END:VEVENT
+END:VCALENDAR
+',
+            ),
+        ),
+    );
+
+    function testIssue220() {
+
+        $request = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD' => 'REPORT',
+            'HTTP_CONTENT_TYPE' => 'application/xml',
+            'REQUEST_URI' => '/calendars/user1/calendar1',
+            'HTTP_DEPTH' => '1',
+        ));
+
+        $request->setBody('<?xml version="1.0" encoding="utf-8" ?>
+<C:calendar-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
+    <D:prop>
+        <C:calendar-data/>
+        <D:getetag/>
+    </D:prop>
+    <C:filter>
+        <C:comp-filter name="VCALENDAR">
+            <C:comp-filter name="VEVENT">
+                <C:comp-filter name="VALARM">
+                    <C:time-range start="20120607T161646Z" end="20120612T161646Z"/>
+                </C:comp-filter>
+            </C:comp-filter>
+        </C:comp-filter>
+    </C:filter>
+</C:calendar-query>');
+
+        $response = $this->request($request);
+
+        $this->assertFalse(strpos($response->body, '<s:exception>PHPUnit_Framework_Error_Warning</s:exception>'), 'Error Warning occurred: ' . $response->body);
+        $this->assertFalse(strpos($response->body, 'Invalid argument supplied for foreach()'), 'Invalid argument supplied for foreach(): ' . $response->body);
+
+        $this->assertEquals('HTTP/1.1 207 Multi-Status', $response->status);
+    }
+}

dav/SabreDAV/tests/Sabre/CalDAV/Notifications/CollectionTest.php

@@ -0,0 +1,27 @@
+<?php
+
+class Sabre_CalDAV_Notifications_CollectionTest extends \PHPUnit_Framework_TestCase {
+
+    function testGetChildren() {
+
+        $principalUri = 'principals/user1';
+
+        $systemStatus = new Sabre_CalDAV_Notifications_Notification_SystemStatus(1);
+
+        $caldavBackend = new Sabre_CalDAV_Backend_Mock(array(),array(), array(
+            'principals/user1' => array(
+                $systemStatus
+            )
+        )); 
+
+
+        $col = new Sabre_CalDAV_Notifications_Collection($caldavBackend, $principalUri);
+        $this->assertEquals('notifications', $col->getName());
+
+        $this->assertEquals(array(
+            new Sabre_CalDAV_Notifications_Node($caldavBackend, $systemStatus)
+        ), $col->getChildren()); 
+
+    }
+
+}

dav/SabreDAV/tests/Sabre/CalDAV/Notifications/NodeTest.php

@@ -0,0 +1,23 @@
+<?php
+
+class Sabre_CalDAV_Notifications_NodeTest extends \PHPUnit_Framework_TestCase {
+
+    function testGetId() {
+
+        $principalUri = 'principals/user1';
+
+        $systemStatus = new Sabre_CalDAV_Notifications_Notification_SystemStatus(1);
+
+        $caldavBackend = new Sabre_CalDAV_Backend_Mock(array(),array(), array(
+            'principals/user1' => array(
+                $systemStatus
+            )
+        )); 
+
+
+        $node = new Sabre_CalDAV_Notifications_Node($caldavBackend, $systemStatus);
+        $this->assertEquals($systemStatus->getId(), $node->getName());
+
+    }
+
+}

dav/SabreDAV/tests/Sabre/CalDAV/Notifications/Notification/SystemStatusTest.php

@@ -0,0 +1,55 @@
+<?php
+
+class Sabre_CalDAV_Notifications_Notification extends \PHPUnit_Framework_TestCase {
+
+    /**
+     * @dataProvider dataProvider
+     */
+    function testSerializers($notification, $expected1, $expected2) {
+
+        $this->assertEquals('foo', $notification->getId());
+
+
+        $dom = new DOMDocument('1.0','UTF-8');
+        $elem = $dom->createElement('cs:root');
+        $elem->setAttribute('xmlns:cs',Sabre_CalDAV_Plugin::NS_CALENDARSERVER);
+        $dom->appendChild($elem);
+        $notification->serialize(new Sabre_DAV_Server(), $elem);
+        $this->assertEquals($expected1, $dom->saveXML());
+
+        $dom = new DOMDocument('1.0','UTF-8');
+        $elem = $dom->createElement('cs:root');
+        $elem->setAttribute('xmlns:cs',Sabre_CalDAV_Plugin::NS_CALENDARSERVER);
+        $dom->appendChild($elem);
+        $notification->serializeBody(new Sabre_DAV_Server(), $elem);
+        $this->assertEquals($expected2, $dom->saveXML());
+
+
+    }
+
+    function dataProvider() {
+
+        return array(
+
+            array(
+                new Sabre_CalDAV_Notifications_Notification_SystemStatus('foo'),
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="high"/></cs:root>' . "\n",
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="high"/></cs:root>' . "\n",
+            ),
+
+            array(
+                new Sabre_CalDAV_Notifications_Notification_SystemStatus('foo',Sabre_CalDAV_Notifications_Notification_SystemStatus::TYPE_MEDIUM,'bar'),
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="medium"/></cs:root>' . "\n",
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="medium"><cs:description>bar</cs:description></cs:systemstatus></cs:root>' . "\n",
+            ),
+
+            array(
+                new Sabre_CalDAV_Notifications_Notification_SystemStatus('foo',Sabre_CalDAV_Notifications_Notification_SystemStatus::TYPE_LOW,null,'http://example.org/'),
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="low"/></cs:root>' . "\n",
+                '<?xml version="1.0" encoding="UTF-8"?>' . "\n" . '<cs:root xmlns:cs="http://calendarserver.org/ns/"><cs:systemstatus type="low"><d:href>http://example.org/</d:href></cs:systemstatus></cs:root>' . "\n",
+            )
+        );
+
+    }
+
+}

dav/SabreDAV/tests/Sabre/CalDAV/OutboxPostTest.php

@@ -191,7 +191,17 @@ class Sabre_CalDAV_OutboxPostTest extends Sabre_DAVServerTest {
 
         $req->setBody(implode("\r\n",$body));
 
-        $this->assertHTTPStatus(501, $req);
+
+        $response = $this->request($req);
+        $this->assertEquals('HTTP/1.1 200 OK', $response->status);
+        $this->assertEquals(array(
+            'Content-Type' => 'application/xml',
+        ), $response->headers);
+
+        // Lazily checking the body for a few expected values.
+        $this->assertTrue(strpos($response->body, '5.2;')!==false);
+        $this->assertTrue(strpos($response->body,'user2@example.org')!==false);
+
 
     }
 
@@ -218,7 +228,66 @@ class Sabre_CalDAV_OutboxPostTest extends Sabre_DAVServerTest {
         $handler = new Sabre_CalDAV_Schedule_IMip_Mock('server@example.org');
 
         $this->caldavPlugin->setIMIPhandler($handler);
-        $this->assertHTTPStatus(200, $req);
+
+        $response = $this->request($req);
+        $this->assertEquals('HTTP/1.1 200 OK', $response->status);
+        $this->assertEquals(array(
+            'Content-Type' => 'application/xml',
+        ), $response->headers);
+
+        // Lazily checking the body for a few expected values.
+        $this->assertTrue(strpos($response->body, '2.0;')!==false);
+        $this->assertTrue(strpos($response->body,'user2@example.org')!==false);
+
+        $this->assertEquals(array(
+            array(
+                'to' => 'user2@example.org',
+                'subject' => 'Invitation for: An invitation',
+                'body' => implode("\r\n", $body) . "\r\n",
+                'headers' => array(
+                    'Reply-To: user1.sabredav@sabredav.org',
+                    'From: server@example.org',
+                    'Content-Type: text/calendar; method=REQUEST; charset=utf-8',
+                    'X-Sabre-Version: ' . Sabre_DAV_Version::VERSION . '-' . Sabre_DAV_Version::STABILITY,
+                ),
+           )
+        ), $handler->getSentEmails());
+
+    }
+
+    function testSuccessRequestUpperCased() {
+
+        $req = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD'  => 'POST',
+            'REQUEST_URI'     => '/calendars/user1/outbox',
+            'HTTP_ORIGINATOR' => 'MAILTO:user1.sabredav@sabredav.org',
+            'HTTP_RECIPIENT'  => 'MAILTO:user2@example.org',
+        ));
+
+        $body = array(
+            'BEGIN:VCALENDAR',
+            'METHOD:REQUEST',
+            'BEGIN:VEVENT',
+            'SUMMARY:An invitation',
+            'END:VEVENT',
+            'END:VCALENDAR',
+        );
+
+        $req->setBody(implode("\r\n",$body));
+
+        $handler = new Sabre_CalDAV_Schedule_IMip_Mock('server@example.org');
+
+        $this->caldavPlugin->setIMIPhandler($handler);
+
+        $response = $this->request($req);
+        $this->assertEquals('HTTP/1.1 200 OK', $response->status);
+        $this->assertEquals(array(
+            'Content-Type' => 'application/xml',
+        ), $response->headers);
+
+        // Lazily checking the body for a few expected values.
+        $this->assertTrue(strpos($response->body, '2.0;')!==false);
+        $this->assertTrue(strpos($response->body,'user2@example.org')!==false);
 
         $this->assertEquals(array(
             array(

dav/SabreDAV/tests/Sabre/CalDAV/PluginTest.php

@@ -23,8 +23,34 @@ class Sabre_CalDAV_PluginTest extends PHPUnit_Framework_TestCase {
 
     function setup() {
 
-        if (!SABRE_HASSQLITE) $this->markTestSkipped('No PDO SQLite support');
-        $this->caldavBackend = Sabre_CalDAV_TestUtil::getBackend();
+        $this->caldavBackend = new Sabre_CalDAV_Backend_Mock(array(
+            array(
+                'id' => 1,
+                'uri' => 'UUID-123467',
+                'principaluri' => 'principals/user1',
+                '{DAV:}displayname' => 'user1 calendar',
+                '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'Calendar description',
+                '{http://apple.com/ns/ical/}calendar-order' => '1',
+                '{http://apple.com/ns/ical/}calendar-color' => '#FF0000',
+                '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet(array('VEVENT','VTODO')),
+            ),
+            array(
+                'id' => 2,
+                'uri' => 'UUID-123468',
+                'principaluri' => 'principals/user1',
+                '{DAV:}displayname' => 'user1 calendar2',
+                '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'Calendar description',
+                '{http://apple.com/ns/ical/}calendar-order' => '1',
+                '{http://apple.com/ns/ical/}calendar-color' => '#FF0000',
+                '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet(array('VEVENT','VTODO')),
+            )
+        ), array(
+            1 => array(
+                'UUID-2345' => array(
+                    'calendardata' => Sabre_CalDAV_TestUtil::getTestCalendarData(),
+                )
+            )
+        ));
         $principalBackend = new Sabre_DAVACL_MockPrincipalBackend();
         $principalBackend->setGroupMemberSet('principals/admin/calendar-proxy-read',array('principals/user1'));
         $principalBackend->setGroupMemberSet('principals/admin/calendar-proxy-write',array('principals/user1'));
@@ -398,6 +424,7 @@ END:VCALENDAR';
             '{urn:ietf:params:xml:ns:caldav}calendar-user-address-set',
             '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}calendar-proxy-read-for',
             '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}calendar-proxy-write-for',
+            '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}notification-URL',
         ));
 
         $this->assertArrayHasKey(0,$props);
@@ -414,6 +441,12 @@ END:VCALENDAR';
         $this->assertTrue($prop instanceof Sabre_DAV_Property_Href);
         $this->assertEquals('calendars/user1/outbox',$prop->getHref());
 
+        $this->assertArrayHasKey('{'.Sabre_CalDAV_Plugin::NS_CALENDARSERVER .'}notification-URL',$props[0][200]);
+        $prop = $props[0][200]['{'.Sabre_CalDAV_Plugin::NS_CALENDARSERVER .'}notification-URL'];
+        $this->assertTrue($prop instanceof Sabre_DAV_Property_Href);
+        $this->assertEquals('calendars/user1/notifications/',$prop->getHref());
+
+
         $this->assertArrayHasKey('{urn:ietf:params:xml:ns:caldav}calendar-user-address-set',$props[0][200]);
         $prop = $props[0][200]['{urn:ietf:params:xml:ns:caldav}calendar-user-address-set'];
         $this->assertTrue($prop instanceof Sabre_DAV_Property_HrefList);
@@ -429,6 +462,7 @@ END:VCALENDAR';
         $this->assertInstanceOf('Sabre_DAV_Property_HrefList', $prop);
         $this->assertEquals(array('principals/admin'), $prop->getHrefs());
 
+
     }
 
     function testSupportedReportSetPropertyNonCalendar() {
@@ -755,7 +789,7 @@ END:VCALENDAR';
             '<d:prop>' .
             '  <c:calendar-data>' .
             '     <c:expand start="20000101T000000Z" end="20101231T235959Z" />' .
-            '  </c:calendar-data>' . 
+            '  </c:calendar-data>' .
             '  <d:getetag />' .
             '</d:prop>' .
             '<c:filter>' .
@@ -991,4 +1025,60 @@ END:VCALENDAR';
         $this->assertEquals('HTTP/1.1 400 Bad request',$this->response->status,'Invalid HTTP status received. Full response body: ' . $this->response->body);
 
     }
+
+    function testNotificationProperties() {
+
+        $request = array(
+            '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}notificationtype',
+        );
+        $result = array();
+        $notification = new Sabre_CalDAV_Notifications_Node(
+            $this->caldavBackend,
+            new Sabre_CalDAV_Notifications_Notification_SystemStatus('foo')
+        );
+        $this->plugin->beforeGetProperties('foo', $notification, $request, $result);
+
+        $this->assertEquals(
+            array(
+                200 => array(
+                    '{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}notificationtype' => $notification->getNotificationType()
+                )
+            ), $result);
+
+    }
+
+    function testNotificationGet() {
+
+        $notification = new Sabre_CalDAV_Notifications_Node(
+            $this->caldavBackend,
+            new Sabre_CalDAV_Notifications_Notification_SystemStatus('foo')
+        );
+
+        $server = new Sabre_DAV_Server(array($notification));
+        $caldav = new Sabre_CalDAV_Plugin();
+
+        $httpResponse = new Sabre_HTTP_ResponseMock();
+        $server->httpResponse = $httpResponse;
+
+        $server->addPlugin($caldav);
+
+        $caldav->beforeMethod('GET','foo');
+
+        $this->assertEquals('HTTP/1.1 200 OK', $httpResponse->status);
+        $this->assertEquals(array(
+            'Content-Type' => 'application/xml',
+        ), $httpResponse->headers);
+
+        $expected = 
+'<?xml version="1.0" encoding="UTF-8"?>
+<cs:notification xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" xmlns:cal="urn:ietf:params:xml:ns:caldav" xmlns:cs="http://calendarserver.org/ns/">
+  <cs:systemstatus type="high"/>
+</cs:notification>
+';
+
+        $this->assertEquals($expected, $httpResponse->body);
+
+
+    }
+
 }

dav/SabreDAV/tests/Sabre/CalDAV/ValidateICalTest.php

@@ -22,6 +22,13 @@ class Sabre_CalDAV_ValidateICalTest extends PHPUnit_Framework_TestCase {
                 'id' => 'calendar1',
                 'principaluri' => 'principals/admin',
                 'uri' => 'calendar1',
+                '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet( array('VEVENT','VTODO','VJOURNAL') ),
+            ),
+            array(
+                'id' => 'calendar2',
+                'principaluri' => 'principals/admin',
+                'uri' => 'calendar2',
+                '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set' => new Sabre_CalDAV_Property_SupportedCalendarComponentSet( array('VTODO','VJOURNAL') ),
             )
         );
 
@@ -207,4 +214,33 @@ class Sabre_CalDAV_ValidateICalTest extends PHPUnit_Framework_TestCase {
         $this->assertEquals($expected, $this->calBackend->getCalendarObject('calendar1','blabla.ics'));
 
     }
+
+    function testCreateFileInvalidComponent() {
+
+        $request = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD' => 'PUT',
+            'REQUEST_URI' => '/calendars/admin/calendar2/blabla.ics',
+        ));
+        $request->setBody("BEGIN:VCALENDAR\r\nBEGIN:VTIMEZONE\r\nEND:VTIMEZONE\r\nBEGIN:VEVENT\r\nUID:foo\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n");
+
+        $response = $this->request($request);
+
+        $this->assertEquals('HTTP/1.1 403 Forbidden', $response->status, 'Incorrect status returned! Full response body: ' . $response->body);
+
+    }
+
+    function testUpdateFileInvalidComponent() {
+
+        $this->calBackend->createCalendarObject('calendar2','blabla.ics','foo');
+        $request = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD' => 'PUT',
+            'REQUEST_URI' => '/calendars/admin/calendar2/blabla.ics',
+        ));
+        $request->setBody("BEGIN:VCALENDAR\r\nBEGIN:VTIMEZONE\r\nEND:VTIMEZONE\r\nBEGIN:VEVENT\r\nUID:foo\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n");
+
+        $response = $this->request($request);
+
+        $this->assertEquals('HTTP/1.1 403 Forbidden', $response->status, 'Incorrect status returned! Full response body: ' . $response->body);
+
+    }
 }

dav/SabreDAV/tests/Sabre/CardDAV/ValidateVCardTest.php

@@ -65,20 +65,35 @@ class Sabre_CardDAV_ValidateVCardTest extends PHPUnit_Framework_TestCase {
             'REQUEST_METHOD' => 'PUT',
             'REQUEST_URI' => '/addressbooks/admin/addressbook1/blabla.vcf',
         ));
-        $request->setBody("BEGIN:VCARD\r\nEND:VCARD\r\n");
+        $request->setBody("BEGIN:VCARD\r\nUID:foo\r\nEND:VCARD\r\n");
 
         $response = $this->request($request);
 
         $this->assertEquals('HTTP/1.1 201 Created', $response->status, 'Incorrect status returned! Full response body: ' . $response->body);
         $expected = array(
             'uri'          => 'blabla.vcf',
-            'carddata' => "BEGIN:VCARD\r\nEND:VCARD\r\n",
+            'carddata' => "BEGIN:VCARD\r\nUID:foo\r\nEND:VCARD\r\n",
         );
 
         $this->assertEquals($expected, $this->cardBackend->getCard('addressbook1','blabla.vcf'));
 
     }
 
+    function testCreateFileNoUID() {
+
+        $request = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD' => 'PUT',
+            'REQUEST_URI' => '/addressbooks/admin/addressbook1/blabla.vcf',
+        ));
+        $request->setBody("BEGIN:VCARD\r\nEND:VCARD\r\n");
+
+        $response = $this->request($request);
+
+        $this->assertEquals('HTTP/1.1 400 Bad request', $response->status, 'Incorrect status returned! Full response body: ' . $response->body);
+
+    }
+
+
     function testCreateFileVCalendar() {
 
         $request = new Sabre_HTTP_Request(array(
@@ -114,7 +129,7 @@ class Sabre_CardDAV_ValidateVCardTest extends PHPUnit_Framework_TestCase {
             'REQUEST_METHOD' => 'PUT',
             'REQUEST_URI' => '/addressbooks/admin/addressbook1/blabla.vcf',
         ));
-        $body = "BEGIN:VCARD\r\nEND:VCARD\r\n";
+        $body = "BEGIN:VCARD\r\nUID:foo\r\nEND:VCARD\r\n";
         $request->setBody($body);
 
         $response = $this->request($request);

dav/SabreDAV/tests/Sabre/DAV/ServerEventsTest.php

@@ -6,6 +6,8 @@ class Sabre_DAV_ServerEventsTest extends Sabre_DAV_AbstractServer {
 
     private $tempPath;
 
+    private $exception;
+
     function testAfterBind() {
 
         $this->server->subscribeEvent('afterBind',array($this,'afterBindHandler'));
@@ -47,5 +49,25 @@ class Sabre_DAV_ServerEventsTest extends Sabre_DAV_AbstractServer {
 
     }
 
+    function testException() {
+
+        $this->server->subscribeEvent('exception', array($this, 'exceptionHandler'));
+
+        $req = new Sabre_HTTP_Request(array(
+            'REQUEST_METHOD' => 'GET',
+            'REQUEST_URI' => '/not/exisitng',
+        ));
+        $this->server->httpRequest = $req;
+        $this->server->exec();
+
+        $this->assertInstanceOf('Sabre_DAV_Exception_NotFound', $this->exception);
+
+    }
+
+    function exceptionHandler(Exception $exception) {
+
+        $this->exception = $exception;
+
+    }
 
 }

dav/SabreDAV/tests/Sabre/DAV/Tree/FilesystemTest.php

@@ -37,6 +37,8 @@ class Sabre_DAV_Tree_FilesystemTest extends PHPUnit_Framework_TestCase {
         $fs = new Sabre_DAV_Tree_Filesystem(SABRE_TEMPDIR);
         $node = $fs->getNodeForPath('dir');
         $this->assertTrue($node instanceof Sabre_DAV_FS_Directory);
+        $this->assertEquals('dir', $node->getName());
+        $this->assertInternalType('array', $node->getChildren());
 
     }
 

dav/SabreDAV/tests/Sabre/VObject/TimeZoneUtilTest.php

@@ -0,0 +1,153 @@
+<?php
+
+class Sabre_VObject_TimeZoneUtilTest extends PHPUnit_Framework_TestCase {
+
+    /**
+     * @dataProvider getMapping
+     */
+    function testCorrectTZ($timezoneName) {
+
+        $tz = new DateTimeZone($timezoneName);
+
+    }
+
+    function getMapping() {
+
+        // PHPUNit requires an array of arrays
+        return array_map(
+            function($value) {
+                return array($value);
+            },
+            Sabre_VObject_TimeZoneUtil::$map
+        );
+
+    }
+
+    function testExchangeMap() {
+
+        $vobj = <<<HI
+BEGIN:VCALENDAR
+METHOD:REQUEST
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:foo
+X-MICROSOFT-CDO-TZID:2
+BEGIN:STANDARD
+DTSTART:16010101T030000
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:16010101T020000
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VEVENT
+DTSTAMP:20120416T092149Z
+DTSTART;TZID="foo":20120418T1
+ 00000
+SUMMARY:Begin Unterhaltsreinigung
+UID:040000008200E00074C5B7101A82E0080000000010DA091DC31BCD01000000000000000
+ 0100000008FECD2E607780649BE5A4C9EE6418CBC
+DTEND;TZID="Sarajevo, Skopje, Sofija, Vilnius, Warsaw, Zagreb":20120418T103
+ 000
+END:VEVENT
+END:VCALENDAR
+HI;
+
+        $tz = Sabre_VObject_TimeZoneUtil::getTimeZone('foo', Sabre_VObject_Reader::read($vobj));
+
+        $this->assertEquals(new DateTimeZone('Europe/Sarajevo'), $tz);
+
+    }
+
+    function testUnknownExchangeId() {
+
+        $vobj = <<<HI
+BEGIN:VCALENDAR
+METHOD:REQUEST
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:foo
+X-MICROSOFT-CDO-TZID:2000
+BEGIN:STANDARD
+DTSTART:16010101T030000
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:16010101T020000
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VEVENT
+DTSTAMP:20120416T092149Z
+DTSTART;TZID="foo":20120418T1
+ 00000
+SUMMARY:Begin Unterhaltsreinigung
+UID:040000008200E00074C5B7101A82E0080000000010DA091DC31BCD01000000000000000
+ 0100000008FECD2E607780649BE5A4C9EE6418CBC
+DTEND;TZID="Sarajevo, Skopje, Sofija, Vilnius, Warsaw, Zagreb":20120418T103
+ 000
+END:VEVENT
+END:VCALENDAR
+HI;
+
+        $tz = Sabre_VObject_TimeZoneUtil::getTimeZone('foo', Sabre_VObject_Reader::read($vobj));
+
+        $this->assertEquals(new DateTimeZone(date_default_timezone_get()), $tz);
+
+    }
+
+    function testWindowsTimeZone() {
+
+        $tz = Sabre_VObject_TimeZoneUtil::getTimeZone('Eastern Standard Time');
+        $this->assertEquals(new DateTimeZone('America/New_York'), $tz);
+
+    }
+
+    function testFallBack() {
+
+        $vobj = <<<HI
+BEGIN:VCALENDAR
+METHOD:REQUEST
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:foo
+BEGIN:STANDARD
+DTSTART:16010101T030000
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=10;BYDAY=-1SU
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:16010101T020000
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+RRULE:FREQ=YEARLY;WKST=MO;INTERVAL=1;BYMONTH=3;BYDAY=-1SU
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VEVENT
+DTSTAMP:20120416T092149Z
+DTSTART;TZID="foo":20120418T1
+ 00000
+SUMMARY:Begin Unterhaltsreinigung
+UID:040000008200E00074C5B7101A82E0080000000010DA091DC31BCD01000000000000000
+ 0100000008FECD2E607780649BE5A4C9EE6418CBC
+ 000
+END:VEVENT
+END:VCALENDAR
+HI;
+        $tz = Sabre_VObject_TimeZoneUtil::getTimeZone('foo', Sabre_VObject_Reader::read($vobj));
+
+        $this->assertEquals(new DateTimeZone(date_default_timezone_get()), $tz);
+
+    }
+
+}

dav/calendar.friendica.fnk.php

@@ -1,9 +1,9 @@
 <?php
 
-$a = get_app();
-$uri = parse_url($a->get_baseurl());
+$a    = get_app();
+$uri  = parse_url($a->get_baseurl());
 $path = "/";
-if (strlen($uri["path"]) > 1) {
+if (isset($uri["path"]) && strlen($uri["path"]) > 1) {
 	$path = $uri["path"] . "/";
 }
 
@@ -12,33 +12,38 @@ define("CALDAV_SQL_PREFIX", "dav_");
 define("CALDAV_URL_PREFIX", $path . "dav/");
 
 define("CALDAV_NAMESPACE_PRIVATE", 1);
-define("CALDAV_NAMESPACE_FRIENDICA_NATIVE", 2);
 
-define("CALDAV_FRIENDICA_MINE", 1);
-define("CALDAV_FRIENDICA_CONTACTS", 2);
+define("CALDAV_FRIENDICA_MINE", "friendica-mine");
+define("CALDAV_FRIENDICA_CONTACTS", "friendica-contacts");
+
+$GLOBALS["CALDAV_PRIVATE_SYSTEM_CALENDARS"] = array(CALDAV_FRIENDICA_MINE, CALDAV_FRIENDICA_CONTACTS);
 
 define("CARDDAV_NAMESPACE_COMMUNITYCONTACTS", 1);
 define("CARDDAV_NAMESPACE_PHONECONTACTS", 2);
 
-define("CALDAV_DB_VERSION", 1);
+define("CALDAV_DB_VERSION", 2);
+
+define("CALDAV_MAX_YEAR", date("Y") + 5);
 
 /**
  * @return int
  */
-function getCurMicrotime () {
-        list($usec, $sec) = explode(" ", microtime());
-        return sprintf("%14.0f", $sec * 10000 + $usec * 10000);
+function getCurMicrotime()
+{
+	list($usec, $sec) = explode(" ", microtime());
+	return sprintf("%14.0f", $sec * 10000 + $usec * 10000);
 } // function getCurMicrotime
 
 /**
  *
  */
-function debug_time() {
-        $cur = getCurMicrotime();
-        if ($GLOBALS["debug_time_last"] > 0) {
-                echo "Zeit: " . ($cur - $GLOBALS["debug_time_last"]) . "<br>\n";
-        }
-        $GLOBALS["debug_time_last"] = $cur;
+function debug_time()
+{
+	$cur = getCurMicrotime();
+	if ($GLOBALS["debug_time_last"] > 0) {
+		echo "Zeit: " . ($cur - $GLOBALS["debug_time_last"]) . "<br>\n";
+	}
+	$GLOBALS["debug_time_last"] = $cur;
 }
 
 
@@ -48,7 +53,7 @@ function debug_time() {
  */
 function dav_compat_username2id($username = "")
 {
-	$x = q("SELECT `uid` FROM user WHERE nickname='%s' AND account_removed = 0 AND account_expired = 0", dbesc($username));
+	$x = q("SELECT `uid` FROM `user` WHERE `nickname`='%s' AND `account_removed` = 0 AND `account_expired` = 0", dbesc($username));
 	if (count($x) == 1) return $x[0]["uid"];
 	return null;
 }
@@ -59,7 +64,7 @@ function dav_compat_username2id($username = "")
  */
 function dav_compat_id2username($id = 0)
 {
-	$x = q("SELECT `nickname` FROM user WHERE uid = %i AND account_removed = 0 AND account_expired = 0", IntVal($id));
+	$x = q("SELECT `nickname` FROM `user` WHERE `uid` = %i AND `account_removed` = 0 AND `account_expired` = 0", IntVal($id));
 	if (count($x) == 1) return $x[0]["nickname"];
 	return "";
 }
@@ -67,7 +72,8 @@ function dav_compat_id2username($id = 0)
 /**
  * @return int
  */
-function dav_compat_get_curr_user_id() {
+function dav_compat_get_curr_user_id()
+{
 	$a = get_app();
 	return IntVal($a->user["uid"]);
 }
@@ -86,13 +92,34 @@ function dav_compat_principal2uid($principalUri = "")
 	return dav_compat_username2id($username);
 }
 
+/**
+ * @param string $principalUri
+ * @return array|null
+ */
+function dav_compat_principal2namespace($principalUri = "")
+{
+	if (strlen($principalUri) == 0) return null;
+	if ($principalUri[0] == "/") $principalUri = substr($principalUri, 1);
+
+	if (strpos($principalUri, "principals/users/") !== 0) return null;
+	$username = substr($principalUri, strlen("principals/users/"));
+	return array("namespace" => CALDAV_NAMESPACE_PRIVATE, "namespace_id" => dav_compat_username2id($username));
+}
+
+
+function dav_compat_currentUserPrincipal() {
+	$a = get_app();
+	return "principals/users/" . strtolower($a->user["nickname"]);
+}
+
 
 /**
  * @param string $name
  * @return null|string
  */
-function dav_compat_getRequestVar($name = "") {
-	if (x($_REQUEST, $name)) return $_REQUEST[$name];
+function dav_compat_getRequestVar($name = "")
+{
+	if (isset($_REQUEST[$name])) return $_REQUEST[$name];
 	else return null;
 }
 
@@ -108,28 +135,49 @@ function dav_compat_parse_text_serverside($text)
 /**
  * @param string $uri
  */
-function dav_compat_redirect($uri = "") {
+function dav_compat_redirect($uri = "")
+{
 	goaway($uri);
 }
 
+
+/**
+ * @return null|int
+ */
+function dav_compat_get_max_private_calendars()
+{
+	return null;
+}
+
 /**
- * @param int $user_id
  * @param int $namespace
  * @param int $namespace_id
- * @return AnimexxCalSource
+ * @param string $uri
+ * @param array $calendar
+ * @return Sabre_CalDAV_Backend_Common
  * @throws Exception
  */
-function wdcal_calendar_factory($user_id, $namespace, $namespace_id)
+function wdcal_calendar_factory($namespace, $namespace_id, $uri, $calendar = null)
 {
 	switch ($namespace) {
 		case CALDAV_NAMESPACE_PRIVATE:
-			return new AnimexxCalSourcePrivate($user_id, $namespace_id);
-		case CALDAV_NAMESPACE_FRIENDICA_NATIVE:
-			return new FriendicaCalSourceEvents($user_id, $namespace_id);
+			if ($uri == CALDAV_FRIENDICA_MINE || $uri == CALDAV_FRIENDICA_CONTACTS) return Sabre_CalDAV_Backend_Friendica::getInstance();
+			else return Sabre_CalDAV_Backend_Private::getInstance();
 	}
 	throw new Exception("Calendar Namespace not found");
 }
 
+/**
+ * @param int $calendar_id
+ * @return Sabre_CalDAV_Backend_Common
+ * @throws Exception
+ */
+function wdcal_calendar_factory_by_id($calendar_id) {
+	$calendar = Sabre_CalDAV_Backend_Common::loadCalendarById($calendar_id);
+	return wdcal_calendar_factory($calendar["namespace"], $calendar["namespace_id"], $calendar["uri"], $calendar);
+}
+
+
 
 /**
  */
@@ -138,27 +186,19 @@ function wdcal_create_std_calendars()
 	$a = get_app();
 	if (!local_user()) return;
 
-	$cals = q("SELECT * FROM %s%scalendars WHERE `uid` = %d AND `namespace` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $a->user["uid"], CALDAV_NAMESPACE_PRIVATE);
-	if (count($cals) == 0) {
-		$maxid = q("SELECT MAX(`namespace_id`) maxid FROM %s%scalendars WHERE `namespace` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE);
-		if (!$maxid) {
-			notification("Something went wrong when trying to create your calendar.");
-			goaway("/");
-			killme();
-		}
-		$nextid = IntVal($maxid[0]["maxid"]) + 1;
-		q("INSERT INTO %s%scalendars (`namespace`, `namespace_id`, `uid`, `displayname`, `timezone`, `ctag`) VALUES (%d, %d, %d, '%s', '%s', 1)",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, $nextid, $a->user["uid"], dbesc(t("Private Calendar")), dbesc($a->timezone)
-		);
-	}
+	$uris = array(
+		'private'                 => t("Private Calendar"),
+		CALDAV_FRIENDICA_MINE     => t("Friendica Events: Mine"),
+		CALDAV_FRIENDICA_CONTACTS => t("Friendica Events: Contacts"),
+	);
+	foreach ($uris as $uri => $name) {
 
-	$cals = q("SELECT * FROM %s%scalendars WHERE `uid` = %d AND `namespace` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $a->user["uid"], CALDAV_NAMESPACE_FRIENDICA_NATIVE);
-	if (count($cals) < 2) {
-		q("INSERT INTO %s%scalendars (`namespace`, `namespace_id`, `uid`, `displayname`, `timezone`, `ctag`) VALUES (%d, %d, %d, '%s', '%s', 1)",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_FRIENDICA_NATIVE, CALDAV_FRIENDICA_MINE, $a->user["uid"], dbesc(t("Friendica Events: Mine")), dbesc($a->timezone)
-		);
-		q("INSERT INTO %s%scalendars (`namespace`, `namespace_id`, `uid`, `displayname`, `timezone`, `ctag`) VALUES (%d, %d, %d, '%s', '%s', 1)",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_FRIENDICA_NATIVE, CALDAV_FRIENDICA_CONTACTS, $a->user["uid"], dbesc(t("Friendica Events: Contacts")), dbesc($a->timezone)
-		);
+		$cals = q("SELECT * FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d AND `uri` = '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, $a->user["uid"], dbesc($uri));
+		if (count($cals) == 0) {
+			q("INSERT INTO %s%scalendars (`namespace`, `namespace_id`, `displayname`, `timezone`, `ctag`, `uri`, `has_vevent`, `has_vtodo`) VALUES (%d, %d, %d, '%s', '%s', 1, '%s', 1, 0)",
+				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, IntVal($a->user["uid"]), dbesc($name), dbesc($a->timezone), dbesc($uri)
+			);
+		}
 	}
 }

dav/colorpicker/demo.html

@@ -6,8 +6,8 @@
 <title>Really Simple Color Picker</title>
 
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
-<script language="javascript" type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
-<script language="javascript" type="text/javascript" src="jquery.colorPicker.min.js"/></script>
+<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+<script type="text/javascript" src="jquery.colorPicker.min.js"></script>
 
 <script type="text/javascript">
   //Run the code when document ready

dav/common/calendar.fnk.php

@@ -1,6 +1,11 @@
 <?php
 
 
+define("DAV_ACL_READ", "{DAV:}read");
+define("DAV_ACL_WRITE", "{DAV:}write");
+define("DAV_DISPLAYNAME", "{DAV:}displayname");
+
+
 class vcard_source_data_email
 {
 	public $email, $type;
@@ -83,7 +88,7 @@ class vcard_source_data
 	/** @var array|vcard_source_data_email[] $email */
 	public $emails;
 
-	/** @var array|vcard_source_data_addresses[] $addresses */
+	/** @var array|vcard_source_data_address[] $addresses */
 	public $addresses;
 
 	/** @var vcard_source_data_photo */
@@ -136,41 +141,6 @@ function vcard_source_compile($vcardsource)
 }
 
 
-/**
- * @param array $start
- * @param array $end
- * @param bool $allday
- * @return vevent
- */
-function dav_create_vevent($start, $end, $allday)
-{
-	if ($end["year"] < $start["year"] ||
-		($end["year"] == $start["year"] && $end["month"] < $start["month"]) ||
-		($end["year"] == $start["year"] && $end["month"] == $start["month"] && $end["day"] < $start["day"]) ||
-		($end["year"] == $start["year"] && $end["month"] == $start["month"] && $end["day"] == $start["day"] && $end["hour"] < $start["hour"]) ||
-		($end["year"] == $start["year"] && $end["month"] == $start["month"] && $end["day"] == $start["day"] && $end["hour"] == $start["hour"] && $end["minute"] < $start["minute"]) ||
-		($end["year"] == $start["year"] && $end["month"] == $start["month"] && $end["day"] == $start["day"] && $end["hour"] == $start["hour"] && $end["minute"] == $start["minute"] && $end["second"] < $start["second"])
-	) {
-		$end = $start;
-	} // DTEND muss <= DTSTART
-
-	$vevent = new vevent();
-	if ($allday) {
-		$vevent->setDtstart($start["year"], $start["month"], $start["day"], FALSE, FALSE, FALSE, FALSE, array("VALUE"=> "DATE"));
-		$end = IntVal(mktime(0, 0, 0, $end["month"], $end["day"], $end["year"]) + 3600 * 24);
-
-		// If a DST change occurs on the current day
-		$end += IntVal(date("Z", ($end - 3600 * 24)) - date("Z", $end));
-
-		$vevent->setDtend(date("Y", $end), date("m", $end), date("d", $end), FALSE, FALSE, FALSE, FALSE, array("VALUE"=> "DATE"));
-	} else {
-		$vevent->setDtstart($start["year"], $start["month"], $start["day"], $start["hour"], $start["minute"], $start["second"], FALSE, array("VALUE"=> "DATE-TIME"));
-		$vevent->setDtend($end["year"], $end["month"], $end["day"], $end["hour"], $end["minute"], $end["second"], FALSE, array("VALUE"=> "DATE-TIME"));
-	}
-	return $vevent;
-}
-
-
 /**
  * @param int $phpDate (UTC)
  * @return string (Lokalzeit)
@@ -216,457 +186,196 @@ function icalendar_sanitize_string($str = "")
 	$str = str_replace("\r\n", "\n", $str);
 	$str = str_replace("\n\r", "\n", $str);
 	$str = str_replace("\r", "\n", $str);
+	$str = str_replace("\n\n", "\n", $str);
+	$str = str_replace("\n\n", "\n", $str);
 	return $str;
 }
 
 
 /**
- * @param DBClass_friendica_calendars $calendar
- * @param DBClass_friendica_calendarobjects $calendarobject
+ * @return Sabre_CalDAV_AnimexxCalendarRootNode
  */
-function renderCalDavEntry_data(&$calendar, &$calendarobject)
+function dav_createRootCalendarNode()
+{
+	$caldavBackend_std       = Sabre_CalDAV_Backend_Private::getInstance();
+	$caldavBackend_community = Sabre_CalDAV_Backend_Friendica::getInstance();
+
+	return new Sabre_CalDAV_AnimexxCalendarRootNode(Sabre_DAVACL_PrincipalBackend_Std::getInstance(), array(
+		$caldavBackend_std,
+		$caldavBackend_community,
+	));
+}
+
+/**
+ * @return Sabre_CardDAV_AddressBookRootFriendica
+ */
+function dav_createRootContactsNode()
+{
+	$carddavBackend_std       = Sabre_CardDAV_Backend_Std::getInstance();
+	$carddavBackend_community = Sabre_CardDAV_Backend_FriendicaCommunity::getInstance();
+
+	return new Sabre_CardDAV_AddressBookRootFriendica(Sabre_DAVACL_PrincipalBackend_Std::getInstance(), array(
+		$carddavBackend_std,
+		$carddavBackend_community,
+	));
+}
+
+
+/**
+ * @param bool $force_authentication
+ * @param bool $needs_caldav
+ * @param bool $needs_carddav
+ * @return Sabre_DAV_Server
+ */
+function dav_create_server($force_authentication = false, $needs_caldav = true, $needs_carddav = true)
+{
+	$arr = array(
+		new Sabre_DAV_SimpleCollection('principals', array(
+			new Sabre_CalDAV_Principal_Collection(Sabre_DAVACL_PrincipalBackend_Std::getInstance(), "principals/users"),
+		)),
+	);
+	if ($needs_caldav) $arr[] = dav_createRootCalendarNode();
+	if ($needs_carddav) $arr[] = dav_createRootContactsNode();
+
+
+	$tree = new Sabre_DAV_SimpleCollection('root', $arr);
+
+// The object tree needs in turn to be passed to the server class
+	$server = new Sabre_DAV_Server($tree);
+
+	$server->setBaseUri(CALDAV_URL_PREFIX);
+
+	$authPlugin = new Sabre_DAV_Auth_Plugin(Sabre_DAV_Auth_Backend_Std::getInstance(), 'SabreDAV');
+	$server->addPlugin($authPlugin);
+
+	$aclPlugin                      = new Sabre_DAVACL_Plugin_Friendica();
+	$aclPlugin->defaultUsernamePath = "principals/users";
+	$server->addPlugin($aclPlugin);
+
+	if ($needs_caldav) {
+		$caldavPlugin = new Sabre_CalDAV_Plugin();
+		$server->addPlugin($caldavPlugin);
+	}
+	if ($needs_carddav) {
+		$carddavPlugin = new Sabre_CardDAV_Plugin();
+		$server->addPlugin($carddavPlugin);
+	}
+
+	if ($force_authentication) $server->broadcastEvent('beforeMethod', array("GET", "/")); // Make it authenticate
+
+	return $server;
+}
+
+
+/**
+ * @param Sabre_DAV_Server $server
+ * @param string $with_privilege
+ * @return array|Sabre_CalDAV_Calendar[]
+ */
+function dav_get_current_user_calendars(&$server, $with_privilege = "")
+{
+	if ($with_privilege == "") $with_privilege = DAV_ACL_READ;
+
+	$a             = get_app();
+	$calendar_path = "/calendars/" . strtolower($a->user["nickname"]) . "/";
+
+	/** @var Sabre_CalDAV_AnimexxUserCalendars $tree  */
+	$tree = $server->tree->getNodeForPath($calendar_path);
+	/** @var array|Sabre_CalDAV_Calendar[] $calendars  */
+	$children = $tree->getChildren();
+
+	$calendars = array();
+	/** @var Sabre_DAVACL_Plugin $aclplugin  */
+	$aclplugin = $server->getPlugin("acl");
+	foreach ($children as $child) if (is_a($child, "Sabre_CalDAV_Calendar")) {
+		if ($with_privilege != "") {
+			$caluri = $calendar_path . $child->getName();
+			if ($aclplugin->checkPrivileges($caluri, $with_privilege, Sabre_DAVACL_Plugin::R_PARENT, false)) $calendars[] = $child;
+		} else {
+			$calendars[] = $child;
+		}
+	}
+	return $calendars;
+}
+
+
+/**
+ * @param Sabre_DAV_Server $server
+ * @param Sabre_CalDAV_Calendar $calendar
+ * @param string $calendarobject_uri
+ * @param string $with_privilege
+ * @return null|Sabre_VObject_Component_VEvent
+ */
+function dav_get_current_user_calendarobject(&$server, &$calendar, $calendarobject_uri, $with_privilege = "")
+{
+	$obj = $calendar->getChild($calendarobject_uri);
+
+	if ($with_privilege == "") $with_privilege = DAV_ACL_READ;
+
+	$a   = get_app();
+	$uri = "/calendars/" . strtolower($a->user["nickname"]) . "/" . $calendar->getName() . "/" . $calendarobject_uri;
+
+	/** @var Sabre_DAVACL_Plugin $aclplugin  */
+	$aclplugin = $server->getPlugin("acl");
+	if (!$aclplugin->checkPrivileges($uri, $with_privilege, Sabre_DAVACL_Plugin::R_PARENT, false)) return null;
+
+	$data    = $obj->get();
+	$vObject = Sabre_VObject_Reader::read($data);
+
+	return $vObject;
+}
+
+
+/**
+ * @param Sabre_DAV_Server $server
+ * @param int $id
+ * @param string $with_privilege
+ * @return null|Sabre_CalDAV_Calendar
+ */
+function dav_get_current_user_calendar_by_id(&$server, $id, $with_privilege = "")
+{
+	$calendars = dav_get_current_user_calendars($server, $with_privilege);
+
+	$calendar = null;
+	foreach ($calendars as $cal) {
+		$prop = $cal->getProperties(array("id"));
+		if (isset($prop["id"]) && $prop["id"] == $id) $calendar = $cal;
+	}
+
+	return $calendar;
+}
+
+
+/**
+ * @param string $uid
+ * @return Sabre_VObject_Component_VEvent $vObject
+ */
+function dav_create_empty_vevent($uid = "")
 {
 	$a = get_app();
+	if ($uid == "") $uid = uniqid();
+	return Sabre_VObject_Reader::read("BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//Friendica//DAV-Plugin//EN\r\nBEGIN:VEVENT\r\nUID:" . $uid . "@" . $a->get_hostname() .
+		"\r\nDTSTAMP:" . date("Ymd") . "T" . date("His") . "Z\r\nEND:VEVENT\r\nEND:VCALENDAR\r\n");
+}
 
-	$v = new vcalendar();
-	$v->setConfig('unique_id', $a->get_hostname());
-	$v->parse($calendarobject->calendardata);
-	$v->sort();
 
-	$eventArray = $v->selectComponents(2009, 1, 1, date("Y") + 2, 12, 30);
 
-	$start_min = $end_max = "";
 
-	$allday   = $summary = $vevent = $rrule = $color = $start = $end = null;
-	$location = $description = "";
-
-	foreach ($eventArray as $yearArray) {
-		foreach ($yearArray as $monthArray) {
-			foreach ($monthArray as $day => $dailyEventsArray) {
-				foreach ($dailyEventsArray as $vevent) {
-					/** @var $vevent vevent  */
-					$start  = "";
-					$rrule  = "NULL";
-					$allday = 0;
-
-					$dtstart = $vevent->getProperty('X-CURRENT-DTSTART');
-					if (is_array($dtstart)) {
-						$start = "'" . $dtstart[1] . "'";
-						if (strpos($dtstart[1], ":") === false) $allday = 1;
-					} else {
-						$dtstart = $vevent->getProperty('dtstart');
-						if (isset($dtstart["day"]) && $dtstart["day"] == $day) { // Mehrtägige Events nur einmal rein
-							if (isset($dtstart["hour"])) $start = "'" . $dtstart["year"] . "-" . $dtstart["month"] . "-" . $dtstart["day"] . " " . $dtstart["hour"] . ":" . $dtstart["minute"] . ":" . $dtstart["secont"] . "'";
-							else {
-								$start  = "'" . $dtstart["year"] . "-" . $dtstart["month"] . "-" . $dtstart["day"] . " 00:00:00'";
-								$allday = 1;
-							}
-						}
-					}
-
-					$dtend = $vevent->getProperty('X-CURRENT-DTEND');
-					if (is_array($dtend)) {
-						$end = "'" . $dtend[1] . "'";
-						if (strpos($dtend[1], ":") === false) $allday = 1;
-					} else {
-						$dtend = $vevent->getProperty('dtend');
-						if (isset($dtend["hour"])) $end = "'" . $dtend["year"] . "-" . $dtend["month"] . "-" . $dtend["day"] . " " . $dtend["hour"] . ":" . $dtend["minute"] . ":" . $dtend["second"] . "'";
-						else {
-							$end    = "'" . $dtend["year"] . "-" . $dtend["month"] . "-" . $dtend["day"] . " 00:00:00' - INTERVAL 1 SECOND";
-							$allday = 1;
-						}
-					}
-					$summary     = $vevent->getProperty('summary');
-					$description = $vevent->getProperty('description');
-					$location    = $vevent->getProperty('location');
-					$rrule_prob  = $vevent->getProperty('rrule');
-					if ($rrule_prob != null) {
-						$rrule = $vevent->createRrule();
-						$rrule = "'" . dbesc($rrule) . "'";
-					}
-					$color_ = $vevent->getProperty("X-ANIMEXX-COLOR");
-					$color  = (is_array($color_) ? $color_[1] : "NULL");
-
-					if ($start_min == "" || preg_replace("/[^0-9]/", "", $start) < preg_replace("/[^0-9]/", "", $start_min)) $start_min = $start;
-					if ($end_max == "" || preg_replace("/[^0-9]/", "", $end) > preg_replace("/[^0-9]/", "", $start_min)) $end_max = $end;
-				}
-			}
+/**
+ * @param Sabre_VObject_Component_VEvent $vObject
+ * @return Sabre_VObject_Component_VEvent|null
+ */
+function dav_get_eventComponent(&$vObject)
+{
+	$component     = null;
+	$componentType = "";
+	foreach ($vObject->getComponents() as $component) {
+		if ($component->name !== 'VTIMEZONE') {
+			$componentType = $component->name;
+			break;
 		}
 	}
+	if ($componentType != "VEVENT") return null;
 
-	if ($start_min != "") {
-
-		if ($allday && mb_strlen($end_max) == 12) {
-			$x       = explode("-", str_replace("'", "", $end_max));
-			$time    = mktime(0, 0, 0, IntVal($x[1]), IntVal($x[2]), IntVal($x[0]));
-			$end_max = date("'Y-m-d H:i:s'", ($time - 1));
-		}
-
-		q("INSERT INTO %s%sjqcalendar (`uid`, `namespace`, `namespace_id`, `ical_uri`, `Subject`, `Location`, `Description`, `StartTime`, `EndTime`, `IsAllDayEvent`, `RecurringRule`, `Color`)
-			VALUES (%d, %d, %d, '%s', '%s', '%s', '%s', %s, %s, %d, '%s', '%s')",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX,
-			IntVal($calendar->uid), IntVal($calendarobject->namespace), IntVal($calendarobject->namespace_id), dbesc($calendarobject->uri), dbesc($summary),
-			dbesc($location), dbesc(str_replace("\\n", "\n", $description)), $start_min, $end_max, IntVal($allday), dbesc($rrule), dbesc($color)
-		);
-
-		foreach ($vevent->components as $comp) {
-			/** @var $comp calendarComponent */
-			$trigger   = $comp->getProperty("TRIGGER");
-			$sql_field = ($trigger["relatedStart"] ? $start : $end);
-			$sql_op    = ($trigger["before"] ? "DATE_SUB" : "DATE_ADD");
-			$num       = "";
-			$rel_type  = "";
-			$rel_value = 0;
-			if (isset($trigger["second"])) {
-				$num       = IntVal($trigger["second"]) . " SECOND";
-				$rel_type  = "second";
-				$rel_value = IntVal($trigger["second"]);
-			}
-			if (isset($trigger["minute"])) {
-				$num       = IntVal($trigger["minute"]) . " MINUTE";
-				$rel_type  = "minute";
-				$rel_value = IntVal($trigger["minute"]);
-			}
-			if (isset($trigger["hour"])) {
-				$num       = IntVal($trigger["hour"]) . " HOUR";
-				$rel_type  = "hour";
-				$rel_value = IntVal($trigger["hour"]);
-			}
-			if (isset($trigger["day"])) {
-				$num       = IntVal($trigger["day"]) . " DAY";
-				$rel_type  = "day";
-				$rel_value = IntVal($trigger["day"]);
-			}
-			if (isset($trigger["week"])) {
-				$num       = IntVal($trigger["week"]) . " WEEK";
-				$rel_type  = "week";
-				$rel_value = IntVal($trigger["week"]);
-			}
-			if (isset($trigger["month"])) {
-				$num       = IntVal($trigger["month"]) . " MONTH";
-				$rel_type  = "month";
-				$rel_value = IntVal($trigger["month"]);
-			}
-			if (isset($trigger["year"])) {
-				$num       = IntVal($trigger["year"]) . " YEAR";
-				$rel_type  = "year";
-				$rel_value = IntVal($trigger["year"]);
-			}
-			if ($trigger["before"]) $rel_value *= -1;
-
-			if ($rel_type != "") {
-				$not_date = "$sql_op($sql_field, INTERVAL $num)";
-				q("INSERT INTO %s%snotifications (`uid`, `ical_uri`, `rel_type`, `rel_value`, `alert_date`, `notified`) VALUES ('%s', '%s', '%s', '%s', %s, IF(%s < NOW(), 1, 0))",
-					CALDAV_SQL_DB, CALDAV_SQL_PREFIX,
-					IntVal($calendar->uid), dbesc($calendarobject->uri), dbesc($rel_type), IntVal($rel_value), $not_date, $not_date);
-			}
-		}
-	}
+	return $component;
 }
-
-
-/**
- *
- */
-function renderAllCalDavEntries()
-{
-	q("DELETE FROM %s%sjqcalendar", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
-	q("DELETE FROM %s%snotifications", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
-	$calendars = q("SELECT * FROM %s%scalendars", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
-	$anz       = count($calendars);
-	$i         = 0;
-	foreach ($calendars as $calendar) {
-		$cal = new DBClass_friendica_calendars($calendar);
-		$i++;
-		if (($i % 100) == 0) echo "$i / $anz\n";
-		$calobjs = q("SELECT * FROM %s%scalendarobjects WHERE `namespace` = %d AND `namespace_id` = %d",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendar["namespace"]), IntVal($calendar["namespace_id"]));
-		foreach ($calobjs as $calobj) {
-			$obj = new DBClass_friendica_calendarobjects($calobj);
-			renderCalDavEntry_data($cal, $obj);
-		}
-	}
-}
-
-
-/**
- * @param string $uri
- * @return bool
- */
-function renderCalDavEntry_uri($uri)
-{
-	q("DELETE FROM %s%sjqcalendar WHERE `ical_uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($uri));
-	q("DELETE FROM %s%snotifications WHERE `ical_uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($uri));
-
-	$calobj = q("SELECT * FROM %s%scalendarobjects WHERE `uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($uri));
-	if (count($calobj) == 0) return false;
-	$cal       = new DBClass_friendica_calendarobjects($calobj[0]);
-	$calendars = q("SELECT * FROM %s%scalendars WHERE `namespace`=%d AND `namespace_id`=%d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($cal->namespace), IntVal($cal->namespace_id));
-	$calendar  = new DBClass_friendica_calendars($calendars[0]);
-	renderCalDavEntry_data($calendar, $cal);
-	return true;
-}
-
-
-/**
- * @param $user_id
- * @return array|DBClass_friendica_calendars[]
- */
-function dav_getMyCals($user_id)
-{
-	$d    = q("SELECT * FROM %s%scalendars WHERE `uid` = %d ORDER BY `calendarorder` ASC",
-		CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($user_id), CALDAV_NAMESPACE_PRIVATE
-	);
-	$cals = array();
-	foreach ($d as $e) $cals[] = new DBClass_friendica_calendars($e);
-	return $cals;
-}
-
-
-/**
- * @param mixed $obj
- * @return string
- */
-function wdcal_jsonp_encode($obj)
-{
-	$str = json_encode($obj);
-	if (isset($_REQUEST["callback"])) {
-		$str = $_REQUEST["callback"] . "(" . $str . ")";
-	}
-	return $str;
-}
-
-
-/**
- * @param string $day
- * @param int $weekstartday
- * @param int $num_days
- * @param string $type
- * @return array
- */
-function wdcal_get_list_range_params($day, $weekstartday, $num_days, $type)
-{
-	$phpTime = IntVal($day);
-	switch ($type) {
-		case "month":
-			$st = mktime(0, 0, 0, date("m", $phpTime), 1, date("Y", $phpTime));
-			$et = mktime(0, 0, -1, date("m", $phpTime) + 1, 1, date("Y", $phpTime));
-			break;
-		case "week":
-			//suppose first day of a week is monday
-			$monday = date("d", $phpTime) - date('N', $phpTime) + 1;
-			//echo date('N', $phpTime);
-			$st = mktime(0, 0, 0, date("m", $phpTime), $monday, date("Y", $phpTime));
-			$et = mktime(0, 0, -1, date("m", $phpTime), $monday + 7, date("Y", $phpTime));
-			break;
-		case "multi_days":
-			//suppose first day of a week is monday
-			$monday = date("d", $phpTime) - date('N', $phpTime) + $weekstartday;
-			//echo date('N', $phpTime);
-			$st = mktime(0, 0, 0, date("m", $phpTime), $monday, date("Y", $phpTime));
-			$et = mktime(0, 0, -1, date("m", $phpTime), $monday + $num_days, date("Y", $phpTime));
-			break;
-		case "day":
-			$st = mktime(0, 0, 0, date("m", $phpTime), date("d", $phpTime), date("Y", $phpTime));
-			$et = mktime(0, 0, -1, date("m", $phpTime), date("d", $phpTime) + 1, date("Y", $phpTime));
-			break;
-		default:
-			return array(0, 0);
-	}
-	return array($st, $et);
-}
-
-
-
-
-
-/**
- * @param string $uri
- * @param string $recurr_uri
- * @param int $uid
- * @param string $timezone
- * @param string $goaway_url
- * @return string
- */
-function wdcal_postEditPage($uri, $recurr_uri = "", $uid = 0, $timezone = "", $goaway_url = "")
-{
-	$uid = IntVal($uid);
-	$localization = wdcal_local::getInstanceByUser($uid);
-
-	if (isset($_REQUEST["allday"])) {
-		$start    = $localization->date_parseLocal($_REQUEST["start_date"] . " 00:00");
-		$end      = $localization->date_parseLocal($_REQUEST["end_date"] . " 20:00");
-		$isallday = true;
-	} else {
-		$start    = $localization->date_parseLocal($_REQUEST["start_date"] . " " . $_REQUEST["start_time"]);
-		$end      = $localization->date_parseLocal($_REQUEST["end_date"] . " " . $_REQUEST["end_time"]);
-		$isallday = false;
-	}
-
-	if ($uri == "new") {
-		$cals = dav_getMyCals($uid);
-		foreach ($cals as $c) {
-			$cs = wdcal_calendar_factory($uid, $c->namespace, $c->namespace_id);
-			$p = $cs->getPermissionsCalendar($uid);
-
-			if ($p["write"]) try {
-				$cs->addItem($start, $end, dav_compat_getRequestVar("subject"), $isallday, dav_compat_parse_text_serverside("wdcal_desc"),
-					dav_compat_getRequestVar("location"), dav_compat_getRequestVar("color"), $timezone,
-					isset($_REQUEST["notification"]), $_REQUEST["notification_type"], $_REQUEST["notification_value"]);
-			} catch (Exception $e) {
-				notification(t("Error") . ": " . $e);
-			}
-			dav_compat_redirect($goaway_url);
-		}
-
-	} else {
-		$cals = dav_getMyCals($uid);
-		foreach ($cals as $c) {
-			$cs = wdcal_calendar_factory($uid, $c->namespace, $c->namespace_id);
-			$p  = $cs->getPermissionsItem($uid, $uri, $recurr_uri);
-			if ($p["write"]) try {
-				$cs->updateItem($uri, $start, $end,
-					dav_compat_getRequestVar("subject"), $isallday, dav_compat_parse_text_serverside("wdcal_desc"),
-					dav_compat_getRequestVar("location"), dav_compat_getRequestVar("color"), $timezone,
-					isset($_REQUEST["notification"]), $_REQUEST["notification_type"], $_REQUEST["notification_value"]);
-			} catch (Exception $e) {
-				notification(t("Error") . ": " . $e);
-			}
-			dav_compat_redirect($goaway_url);
-		}
-	}
-}
-
-
-/**
- *
- */
-function wdcal_print_feed($base_path = "")
-{
-	$user_id = dav_compat_get_curr_user_id();
-	$cals    = array();
-	if (isset($_REQUEST["cal"])) foreach ($_REQUEST["cal"] as $c) {
-		$x              = explode("-", $c);
-		$calendarSource = wdcal_calendar_factory($user_id, $x[0], $x[1]);
-		$calp           = $calendarSource->getPermissionsCalendar($user_id);
-		if ($calp["read"]) $cals[] = $calendarSource;
-	}
-
-	$ret = null;
-	/** @var $cals array|AnimexxCalSource[] */
-
-	$method = $_GET["method"];
-	switch ($method) {
-		case "add":
-			$cs = null;
-			foreach ($cals as $c) if ($cs == null) {
-				$x = $c->getPermissionsCalendar($user_id);
-				if ($x["read"]) $cs = $c;
-			}
-			if ($cs == null) {
-				echo wdcal_jsonp_encode(array('IsSuccess' => false,
-											  'Msg'       => t('No access')));
-				killme();
-			}
-			try {
-				$start  = wdcal_mySql2icalTime(wdcal_php2MySqlTime($_REQUEST["CalendarStartTime"]));
-				$end    = wdcal_mySql2icalTime(wdcal_php2MySqlTime($_REQUEST["CalendarEndTime"]));
-				$newuri = $cs->addItem($start, $end, $_REQUEST["CalendarTitle"], $_REQUEST["IsAllDayEvent"]);
-				$ret    = array(
-					'IsSuccess' => true,
-					'Msg'       => 'add success',
-					'Data'      => $newuri,
-				);
-
-			} catch (Exception $e) {
-				$ret = array(
-					'IsSuccess' => false,
-					'Msg'       => $e->__toString(),
-				);
-			}
-			break;
-		case "list":
-			$weekstartday = (isset($_REQUEST["weekstartday"]) ? IntVal($_REQUEST["weekstartday"]) : 1); // 1 = Monday
-			$num_days     = (isset($_REQUEST["num_days"]) ? IntVal($_REQUEST["num_days"]) : 7);
-			$ret          = null;
-
-			$date          = wdcal_get_list_range_params($_REQUEST["showdate"], $weekstartday, $num_days, $_REQUEST["viewtype"]);
-			$ret           = array();
-			$ret['events'] = array();
-			$ret["issort"] = true;
-			$ret["start"]  = $date[0];
-			$ret["end"]    = $date[1];
-			$ret['error']  = null;
-
-			foreach ($cals as $c) {
-				$events        = $c->listItemsByRange($date[0], $date[1], $base_path);
-				$ret["events"] = array_merge($ret["events"], $events);
-			}
-
-			$tmpev = array();
-			foreach ($ret["events"] as $e) {
-				if (!isset($tmpev[$e["start"]])) $tmpev[$e["start"]] = array();
-				$tmpev[$e["start"]][] = $e;
-			}
-			ksort($tmpev);
-			$ret["events"] = array();
-			foreach ($tmpev as $e) foreach ($e as $f) $ret["events"][] = $f;
-
-			break;
-		case "update":
-			$found = false;
-			$start = wdcal_mySql2icalTime(wdcal_php2MySqlTime($_REQUEST["CalendarStartTime"]));
-			$end   = wdcal_mySql2icalTime(wdcal_php2MySqlTime($_REQUEST["CalendarEndTime"]));
-			foreach ($cals as $c) try {
-				$permissions_item = $c->getPermissionsItem($user_id, $_REQUEST["calendarId"], "");
-				if ($permissions_item["write"]) {
-					$c->updateItem($_REQUEST["calendarId"], $start, $end);
-					$found = true;
-				}
-			} catch (Exception $e) {
-			}
-			;
-
-			if ($found) {
-				$ret = array(
-					'IsSuccess' => true,
-					'Msg'       => 'Succefully',
-				);
-			} else {
-				echo wdcal_jsonp_encode(array('IsSuccess' => false,
-											  'Msg'       => t('No access')));
-				killme();
-			}
-
-			try {
-			} catch (Exception $e) {
-				$ret = array(
-					'IsSuccess' => false,
-					'Msg'       => $e->__toString(),
-				);
-			}
-			break;
-		case "remove":
-			$found = false;
-			foreach ($cals as $c) try {
-				$permissions_item = $c->getPermissionsItem($user_id, $_REQUEST["calendarId"], "");
-				if ($permissions_item["write"]) $c->removeItem($_REQUEST["calendarId"]);
-			} catch (Exception $e) {
-			}
-
-			if ($found) {
-				$ret = array(
-					'IsSuccess' => true,
-					'Msg'       => 'Succefully',
-				);
-			} else {
-				echo wdcal_jsonp_encode(array('IsSuccess' => false,
-											  'Msg'       => t('No access')));
-				killme();
-			}
-			break;
-	}
-	echo wdcal_jsonp_encode($ret);
-	killme();
-}
-

dav/common/calendar_rendering.fnk.php

@@ -0,0 +1,185 @@
+<?php
+
+
+
+/**
+ * @param Sabre_VObject_Component_VAlarm $alarm
+ * @param Sabre_VObject_Component_VEvent|Sabre_VObject_Component_VTodo $parent
+ * @return DateTime|null
+ * @throws Sabre_DAV_Exception
+ */
+function renderCalDavEntry_calcalarm(&$alarm, &$parent)
+{
+	$trigger = $alarm->__get("TRIGGER");
+	if (!isset($trigger['VALUE']) || strtoupper($trigger['VALUE']) === 'DURATION') {
+		$triggerDuration = Sabre_VObject_DateTimeParser::parseDuration($trigger);
+
+		$related = (isset($trigger['RELATED']) && strtoupper($trigger['RELATED']) == 'END') ? 'END' : 'START';
+
+		if ($related === 'START') {
+			/** @var Sabre_VObject_Property_DateTime $dtstart  */
+			$dtstart          = $parent->__get("DTSTART");
+			$effectiveTrigger = $dtstart->getDateTime();
+			$effectiveTrigger->add($triggerDuration);
+		} else {
+			if ($parent->name === 'VTODO') {
+				$endProp = 'DUE';
+			} else {
+				$endProp = 'DTEND';
+			}
+
+			/** @var Sabre_VObject_Property_DateTime $dtstart  */
+			$dtstart = $parent->__get("DTSTART");
+			if (isset($parent->$endProp)) {
+				$effectiveTrigger = clone $parent->$endProp->getDateTime();
+				$effectiveTrigger->add($triggerDuration);
+			} elseif ($parent->__get("DURATION") != "") {
+				$effectiveTrigger = clone $dtstart->getDateTime();
+				$duration         = Sabre_VObject_DateTimeParser::parseDuration($parent->__get("DURATION"));
+				$effectiveTrigger->add($duration);
+				$effectiveTrigger->add($triggerDuration);
+			} else {
+				$effectiveTrigger = clone $dtstart->getDateTime();
+				$effectiveTrigger->add($triggerDuration);
+			}
+		}
+	} else {
+		// ??? @TODO
+		$effectiveTrigger = $trigger->getDateTime();
+	}
+	return $effectiveTrigger;
+}
+
+/**
+ * @param array $calendar
+ * @param array $calendarobject
+ * @throws Sabre_DAV_Exception_BadRequest
+ * @return void
+ */
+function renderCalDavEntry_data(&$calendar, &$calendarobject)
+{
+	/** @var Sabre_VObject_Component_VCalendar $vObject  */
+	$vObject       = Sabre_VObject_Reader::read($calendarobject["calendardata"]);
+	$componentType = null;
+	/** @var Sabre_VObject_Component_VEvent $component  */
+	$component = null;
+	foreach ($vObject->getComponents() as $component) {
+		if ($component->name !== 'VTIMEZONE') {
+			$componentType = $component->name;
+			break;
+		}
+	}
+	if (!$componentType) {
+		throw new Sabre_DAV_Exception_BadRequest('Calendar objects must have a VJOURNAL, VEVENT or VTODO component');
+	}
+
+
+	if ($componentType !== 'VEVENT') return;
+
+	$event = array(
+		"description" => ($component->__get("DESCRIPTION") ? $component->__get("DESCRIPTION")->value : null),
+		"summary"     => ($component->__get("SUMMARY") ? $component->__get("SUMMARY")->value : null),
+		"location"    => ($component->__get("LOCATION") ? $component->__get("LOCATION")->value : null),
+		"color"       => ($component->__get("X-ANIMEXX-COLOR") ? $component->__get("X-ANIMEXX-COLOR")->value : null),
+	);
+
+	$recurring = ($component->__get("RRULE") ? 1 : 0);
+	/** @var Sabre_VObject_Property_DateTime $dtstart  */
+	$dtstart = $component->__get("DTSTART");
+	$allday  = ($dtstart->getDateType() == Sabre_VObject_Property_DateTime::DATE ? 1 : 0);
+
+	/** @var array|Sabre_VObject_Component_VAlarm[] $alarms  */
+	$alarms = array();
+	foreach ($component->getComponents() as $a_component) if ($a_component->name == "VALARM") {
+		/** var Sabre_VObject_Component_VAlarm $component */
+		$alarms[] = $a_component;
+	}
+
+	$it       = new Sabre_VObject_RecurrenceIterator($vObject, (string)$component->__get("UID"));
+	$last_end = 0;
+	$max_ts   = mktime(0, 0, 0, 1, 1, CALDAV_MAX_YEAR * 1);
+	$first    = true;
+
+	while ($it->valid() && $last_end < $max_ts && ($recurring || $first)) {
+		$first    = false;
+		$last_end = $it->getDtEnd()->getTimestamp();
+		$start    = $it->getDtStart()->getTimestamp();
+
+		q("INSERT INTO %s%sjqcalendar (`calendar_id`, `calendarobject_id`, `Summary`, `StartTime`, `EndTime`, `IsEditable`, `IsAllDayEvent`, `IsRecurring`, `Color`) VALUES
+			(%d, %d, '%s', '%s', '%s', %d, %d, %d, '%s')", CALDAV_SQL_DB, CALDAV_SQL_PREFIX,
+			IntVal($calendar["id"]), IntVal($calendarobject["id"]), dbesc($event["summary"]), date("Y-m-d H:i:s", $start), date("Y-m-d H:i:s", $last_end),
+			1, $allday, $recurring, dbesc(substr($event["color"], 1))
+		);
+
+		foreach ($alarms as $alarm) {
+			$alarm    = renderCalDavEntry_calcalarm($alarm, $component);
+			$notified = ($alarm->getTimestamp() < time() ? 1 : 0);
+			q("INSERT INTO %s%snotifications (`calendar_id`, `calendarobject_id`, `alert_date`, `notified`) VALUES (%d, %d, '%s', %d)",
+				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendar["id"]), IntVal($calendarobject["id"]), $alarm->format("Y-m-d H:i:s"), $notified
+			);
+		}
+
+		$it->next();
+	}
+
+	return;
+
+}
+
+
+/**
+ *
+ */
+function renderAllCalDavEntries()
+{
+	q("DELETE FROM %s%sjqcalendar", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
+	q("DELETE FROM %s%snotifications", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
+	$calendars = q("SELECT * FROM %s%scalendars", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
+	$anz       = count($calendars);
+	$i         = 0;
+	foreach ($calendars as $calendar) {
+		$i++;
+		if (($i % 100) == 0) echo "$i / $anz\n";
+		$calobjs = q("SELECT * FROM %s%scalendarobjects WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendar["id"]));
+		foreach ($calobjs as $calobj) renderCalDavEntry_data($calendar, $calobj);
+	}
+}
+
+
+/**
+ * @param string $uri
+ * @return bool
+ */
+function renderCalDavEntry_uri($uri)
+{
+	$calobj = q("SELECT * FROM %s%scalendarobjects WHERE `uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($uri));
+	if (count($calobj) == 0) return false;
+
+	q("DELETE FROM %s%sjqcalendar WHERE `calendar_id` = %d AND `calendarobject_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calobj[0]["calendar_id"]), IntVal($calobj[0]["id"]));
+	q("DELETE FROM %s%snotifications WHERE `calendar_id` = %d AND `calendarobject_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calobj[0]["calendar_id"]), IntVal($calobj[0]["id"]));
+
+	$calendars = q("SELECT * FROM %s%scalendars WHERE `id`=%d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calobj[0]["calendar_id"]));
+
+	renderCalDavEntry_data($calendars[0], $calobj[0]);
+	return true;
+}
+
+
+/**
+ * @param int $calobj_id
+ * @return bool
+ */
+function renderCalDavEntry_calobj_id($calobj_id)
+{
+	$calobj_id = IntVal($calobj_id);
+	q("DELETE FROM %s%sjqcalendar WHERE `calendarobject_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calobj_id);
+	q("DELETE FROM %s%snotifications WHERE `calendarobject_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calobj_id);
+
+	$calobj = q("SELECT * FROM %s%scalendarobjects WHERE `id` = '%d'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calobj_id);
+	if (count($calobj) == 0) return false;
+
+	$calendars = q("SELECT * FROM %s%scalendars WHERE `id`=%d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calobj[0]["calendar_id"]));
+
+	renderCalDavEntry_data($calendars[0], $calobj[0]);
+	return true;
+}

dav/common/dav_caldav_backend_common.inc.php

@@ -1,76 +1,171 @@
 <?php
 
-abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract {
+abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract
+{
 	/**
-	 * List of CalDAV properties, and how they map to database fieldnames
-	 *
-	 * Add your own properties by simply adding on to this array
-	 *
 	 * @var array
 	 */
-	public $propertyMap = array(
-		'{DAV:}displayname'                          => 'displayname',
+	protected $propertyMap = array(
+		'{DAV:}displayname'                                   => 'displayname',
 		'{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description',
 		'{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'timezone',
-		'{http://apple.com/ns/ical/}calendar-order'  => 'calendarorder',
-		'{http://apple.com/ns/ical/}calendar-color'  => 'calendarcolor',
+		'{http://apple.com/ns/ical/}calendar-order'           => 'calendarorder',
+		'{http://apple.com/ns/ical/}calendar-color'           => 'calendarcolor',
 	);
 
 
+	/**
+	 * @abstract
+	 * @return int
+	 */
 	abstract public function getNamespace();
-	abstract public function getCalUrlPrefix();
+
 
 	/**
-	 * @param int $namespace
-	 * @param int $namespace_id
+	 * @param int $calendarId
+	 * @param string $sd
+	 * @param string $ed
+	 * @param string $base_path
+	 * @return array
 	 */
-	protected function increaseCalendarCtag($namespace, $namespace_id) {
-		$namespace = IntVal($namespace);
-		$namespace_id = IntVal($namespace_id);
+	abstract public function listItemsByRange($calendarId, $sd, $ed, $base_path);
 
-		q("UPDATE %s%scalendars SET `ctag` = `ctag` + 1 WHERE `namespace` = %d AND `namespace_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $namespace, $namespace_id);
+
+	/**
+	 * @var array
+	 */
+	static private $calendarCache = array();
+
+	/**
+	 * @var array
+	 */
+	static private $calendarObjectCache = array();
+
+	/**
+	 * @static
+	 * @param int $calendarId
+	 * @return array
+	 */
+	static public function loadCalendarById($calendarId)
+	{
+		if (!isset(self::$calendarCache[$calendarId])) {
+			$c                                = q("SELECT * FROM %s%scalendars WHERE `id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+			self::$calendarCache[$calendarId] = $c[0];
+		}
+		return self::$calendarCache[$calendarId];
+	}
+
+	/**
+	 * @static
+	 * @param int $obj_id
+	 * @return array
+	 */
+	static public function loadCalendarobjectById($obj_id)
+	{
+		if (!isset(self::$calendarObjectCache[$obj_id])) {
+			$o                                  = q("SELECT * FROM %s%scalendarobjects WHERE `id` = %d",
+				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($obj_id)
+			);
+			self::$calendarObjectCache[$obj_id] = $o[0];
+		}
+		return self::$calendarObjectCache[$obj_id];
 	}
 
 
-
 	/**
-	 * Returns a list of calendars for a principal.
-	 *
-	 * Every project is an array with the following keys:
-	 *  * id, a unique id that will be used by other functions to modify the
-	 *    calendar. This can be the same as the uri or a database key.
-	 *  * uri, which the basename of the uri with which the calendar is
-	 *    accessed.
-	 *  * principaluri. The owner of the calendar. Almost always the same as
-	 *    principalUri passed to this method.
-	 *
-	 * Furthermore it can contain webdav properties in clark notation. A very
-	 * common one is '{DAV:}displayname'.
-	 *
-	 * @param string $principalUri
-	 * @return array
+	 * @static
+	 * @param Sabre_VObject_Component_VEvent $component
+	 * @return int
 	 */
-	public function getCalendarsForUser($principalUri)
+	public static function getDtEndTimeStamp(&$component)
 	{
-		list(,$name) = Sabre_DAV_URLUtil::splitPath($principalUri);
-		$user_id = dav_compat_username2id($name);
-
-		$cals = q("SELECT * FROM %s%scalendars WHERE `uid`=%d AND `namespace` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $user_id, $this->getNamespace());
-		$ret = array();
-		foreach ($cals as $cal) {
-			$dat = array(
-				"id" => $cal["namespace"] . "-" . $cal["namespace_id"],
-				"uri" => $this->getCalUrlPrefix() . "-" . $cal["namespace_id"],
-				"principaluri" => $principalUri,
-				'{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $cal['ctag']?$cal['ctag']:'0',
-				"calendar_class" => "Sabre_CalDAV_Calendar",
-			);
-			foreach ($this->propertyMap as $key=>$field) $dat[$key] = $cal[$field];
-
-			$ret[] = $dat;
+		/** @var Sabre_VObject_Property_DateTime $dtstart */
+		$dtstart = $component->__get("DTSTART");
+		if ($component->__get("DTEND")) {
+			/** @var Sabre_VObject_Property_DateTime $dtend */
+			$dtend = $component->__get("DTEND");
+			return $dtend->getDateTime()->getTimeStamp();
+		} elseif ($component->__get("DURATION")) {
+			$endDate = clone $dtstart->getDateTime();
+			$endDate->add(Sabre_VObject_DateTimeParser::parse($component->__get("DURATION")->value));
+			return $endDate->getTimeStamp();
+		} elseif ($dtstart->getDateType() === Sabre_VObject_Property_DateTime::DATE) {
+			$endDate = clone $dtstart->getDateTime();
+			$endDate->modify('+1 day');
+			return $endDate->getTimeStamp();
+		} else {
+			return $dtstart->getDateTime()->getTimeStamp() + 3600;
 		}
 
-		return $ret;
+	}
+
+
+	/**
+	 * Parses some information from calendar objects, used for optimized
+	 * calendar-queries.
+	 *
+	 * Returns an array with the following keys:
+	 *   * etag
+	 *   * size
+	 *   * componentType
+	 *   * firstOccurence
+	 *   * lastOccurence
+	 *
+	 * @param string $calendarData
+	 * @throws Sabre_DAV_Exception_BadRequest
+	 * @return array
+	 */
+	protected function getDenormalizedData($calendarData)
+	{
+		/** @var Sabre_VObject_Component_VEvent $vObject */
+		$vObject        = Sabre_VObject_Reader::read($calendarData);
+		$componentType  = null;
+		$component      = null;
+		$firstOccurence = null;
+		$lastOccurence  = null;
+		foreach ($vObject->getComponents() as $component) {
+			if ($component->name !== 'VTIMEZONE') {
+				$componentType = $component->name;
+				break;
+			}
+		}
+		if (!$componentType) {
+			throw new Sabre_DAV_Exception_BadRequest('Calendar objects must have a VJOURNAL, VEVENT or VTODO component');
+		}
+		if ($componentType === 'VEVENT') {
+			/** @var Sabre_VObject_Component_VEvent $component */
+			/** @var Sabre_VObject_Property_DateTime $dtstart  */
+			$dtstart        = $component->__get("DTSTART");
+			$firstOccurence = $dtstart->getDateTime()->getTimeStamp();
+			// Finding the last occurence is a bit harder
+			if (!$component->__get("RRULE")) {
+				$lastOccurence = self::getDtEndTimeStamp($component);
+			} else {
+				$it      = new Sabre_VObject_RecurrenceIterator($vObject, (string)$component->__get("UID"));
+				$maxDate = new DateTime(CALDAV_MAX_YEAR . "-01-01");
+				if ($it->isInfinite()) {
+					$lastOccurence = $maxDate->getTimeStamp();
+				} else {
+					$end = $it->getDtEnd();
+					while ($it->valid() && $end < $maxDate) {
+						$end = $it->getDtEnd();
+						$it->next();
+
+					}
+					$lastOccurence = $end->getTimeStamp();
+				}
+
+			}
+		}
+
+		return array(
+			'etag'           => md5($calendarData),
+			'size'           => strlen($calendarData),
+			'componentType'  => $componentType,
+			'firstOccurence' => $firstOccurence,
+			'lastOccurence'  => $lastOccurence,
+		);
+
 	}
 
 	/**
@@ -109,10 +204,11 @@ abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract
 	 * @param array $mutations
 	 * @return bool|array
 	 */
-	public function updateCalendar($calendarId, array $mutations) {
+	public function updateCalendar($calendarId, array $mutations)
+	{
 
 		$newValues = array();
-		$result = array(
+		$result    = array(
 			200 => array(), // Ok
 			403 => array(), // Forbidden
 			424 => array(), // Failed Dependency
@@ -120,17 +216,17 @@ abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract
 
 		$hasError = false;
 
-		foreach($mutations as $propertyName=>$propertyValue) {
+		foreach ($mutations as $propertyName=> $propertyValue) {
 
 			// We don't know about this property.
 			if (!isset($this->propertyMap[$propertyName])) {
-				$hasError = true;
+				$hasError                   = true;
 				$result[403][$propertyName] = null;
 				unset($mutations[$propertyName]);
 				continue;
 			}
 
-			$fieldName = $this->propertyMap[$propertyName];
+			$fieldName             = $this->propertyMap[$propertyName];
 			$newValues[$fieldName] = $propertyValue;
 
 		}
@@ -138,33 +234,46 @@ abstract class Sabre_CalDAV_Backend_Common extends Sabre_CalDAV_Backend_Abstract
 		// If there were any errors we need to fail the request
 		if ($hasError) {
 			// Properties has the remaining properties
-			foreach($mutations as $propertyName=>$propertyValue) {
+			foreach ($mutations as $propertyName=> $propertyValue) {
 				$result[424][$propertyName] = null;
 			}
 
 			// Removing unused statuscodes for cleanliness
-			foreach($result as $status=>$properties) {
-				if (is_array($properties) && count($properties)===0) unset($result[$status]);
+			foreach ($result as $status=> $properties) {
+				if (is_array($properties) && count($properties) === 0) unset($result[$status]);
 			}
 
 			return $result;
 
 		}
 
-		$x = explode("-", $calendarId);
-
-		$this->increaseCalendarCtag($x[0], $x[1]);
+		$this->increaseCalendarCtag($calendarId);
 
 		$valuesSql = array();
-		foreach($newValues as $fieldName=>$value) $valuesSql[] = "`" . $fieldName . "` = '" . dbesc($value) . "'";
+		foreach ($newValues as $fieldName=> $value) $valuesSql[] = "`" . $fieldName . "` = '" . dbesc($value) . "'";
 		if (count($valuesSql) > 0) {
-			q("UPDATE %s%scalendars SET " . implode(", ", $valuesSql) . " WHERE `namespace` = %d AND `namespace_id` = %d",
-				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[0]), IntVal($x[1])
-			);
+			q("UPDATE %s%scalendars SET " . implode(", ", $valuesSql) . " WHERE `id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
 		}
 
 		return true;
 
 	}
 
+	/**
+	 * @param int $calendarId
+	 */
+	protected function increaseCalendarCtag($calendarId)
+	{
+		q("UPDATE %s%scalendars SET `ctag` = `ctag` + 1 WHERE `id` = '%d'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+		self::$calendarObjectCache = array();
+	}
+
+	/**
+	 * @abstract
+	 * @param int $calendar_id
+	 * @param int $calendarobject_id
+	 * @return string
+	 */
+	abstract function getItemDetailRedirect($calendar_id, $calendarobject_id);
+
 }

dav/common/dav_caldav_backend_private.inc.php

@@ -0,0 +1,495 @@
+<?php
+
+class Sabre_CalDAV_Backend_Private extends Sabre_CalDAV_Backend_Common
+{
+
+
+	/**
+	 * @var null|Sabre_CalDAV_Backend_Private
+	 */
+	private static $instance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_CalDAV_Backend_Private
+	 */
+	public static function getInstance()
+	{
+		if (self::$instance == null) {
+			self::$instance = new Sabre_CalDAV_Backend_Private();
+		}
+		return self::$instance;
+	}
+
+
+	/**
+	 * @return int
+	 */
+	public function getNamespace()
+	{
+		return CALDAV_NAMESPACE_PRIVATE;
+	}
+
+
+	/**
+	 * @obsolete
+	 * @param array $calendar
+	 * @param int $user
+	 * @return array
+	 */
+	public function getPermissionsCalendar($calendar, $user)
+	{
+		if ($calendar["namespace"] == CALDAV_NAMESPACE_PRIVATE && $user == $calendar["namespace_id"]) return array("read"=> true, "write"=> true);
+		return array("read"=> false, "write"=> false);
+	}
+
+	/**
+	 * @obsolete
+	 * @param array $calendar
+	 * @param int $user
+	 * @param string $calendarobject_id
+	 * @param null|array $item_arr
+	 * @return array
+	 */
+	public function getPermissionsItem($calendar, $user, $calendarobject_id, $item_arr = null)
+	{
+		return $this->getPermissionsCalendar($calendar, $user);
+	}
+
+
+	/**
+	 * @param array $row
+	 * @param array $calendar
+	 * @param string $base_path
+	 * @return array
+	 */
+	private function jqcal2wdcal($row, $calendar, $base_path)
+	{
+		$not      = q("SELECT COUNT(*) num FROM %s%snotifications WHERE `calendar_id` = %d AND `calendarobject_id` = %d",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($row["calendar_id"]), IntVal($row["calendarobject_id"])
+		);
+		$editable = $this->getPermissionsItem($calendar["namespace_id"], $row["calendarobject_id"], $row);
+
+		$end = wdcal_mySql2PhpTime($row["EndTime"]);
+		if ($row["IsAllDayEvent"]) $end -= 1;
+
+		return array(
+			"jq_id"             => $row["id"],
+			"ev_id"             => $row["calendarobject_id"],
+			"summary"           => escape_tags($row["Summary"]),
+			"start"             => wdcal_mySql2PhpTime($row["StartTime"]),
+			"end"               => $end,
+			"is_allday"         => $row["IsAllDayEvent"],
+			"is_moredays"       => 0,
+			"is_recurring"      => $row["IsRecurring"],
+			"color"             => (is_null($row["Color"]) || $row["Color"] == "" ? $calendar["calendarcolor"] : $row["Color"]),
+			"is_editable"       => ($editable ? 1 : 0),
+			"is_editable_quick" => ($editable && !$row["IsRecurring"] ? 1 : 0),
+			"location"          => "Loc.",
+			"attendees"         => '',
+			"has_notification"  => ($not[0]["num"] > 0 ? 1 : 0),
+			"url_detail"        => $base_path . $row["calendarobject_id"] . "/",
+			"url_edit"          => $base_path . $row["calendarobject_id"] . "/edit/",
+			"special_type"      => "",
+		);
+	}
+
+	/**
+	 * @param int $calendarId
+	 * @param string $sd
+	 * @param string $ed
+	 * @param string $base_path
+	 * @return array
+	 */
+	public function listItemsByRange($calendarId, $sd, $ed, $base_path)
+	{
+		$calendar = Sabre_CalDAV_Backend_Common::loadCalendarById($calendarId);
+		$von      = wdcal_php2MySqlTime($sd);
+		$bis      = wdcal_php2MySqlTime($ed);
+
+		// @TODO Events, die früher angefangen haben, aber noch andauern
+		$evs = q("SELECT * FROM %s%sjqcalendar WHERE `calendar_id` = %d AND `starttime` between '%s' and '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX,
+			IntVal($calendarId), dbesc($von), dbesc($bis));
+
+		$events = array();
+		foreach ($evs as $row) $events[] = $this->jqcal2wdcal($row, $calendar, $base_path . $row["calendar_id"] . "/");
+
+		return $events;
+	}
+
+
+	/**
+	 * @param int $calendar_id
+	 * @param int $calendarobject_id
+	 * @return string
+	 */
+	public function getItemDetailRedirect($calendar_id, $calendarobject_id)
+	{
+		return "/dav/wdcal/$calendar_id/$calendarobject_id/edit/";
+	}
+
+	/**
+	 * Returns a list of calendars for a principal.
+	 *
+	 * Every project is an array with the following keys:
+	 *  * id, a unique id that will be used by other functions to modify the
+	 *    calendar. This can be the same as the uri or a database key.
+	 *  * uri, which the basename of the uri with which the calendar is
+	 *    accessed.
+	 *  * principaluri. The owner of the calendar. Almost always the same as
+	 *    principalUri passed to this method.
+	 *
+	 * Furthermore it can contain webdav properties in clark notation. A very
+	 * common one is '{DAV:}displayname'.
+	 *
+	 * @param string $principalUri
+	 * @return array
+	 */
+	public function getCalendarsForUser($principalUri)
+	{
+		$n = dav_compat_principal2namespace($principalUri);
+		if ($n["namespace"] != $this->getNamespace()) return array();
+
+		$cals = q("SELECT * FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $this->getNamespace(), IntVal($n["namespace_id"]));
+		$ret  = array();
+		foreach ($cals as $cal) {
+			if (in_array($cal["uri"], $GLOBALS["CALDAV_PRIVATE_SYSTEM_CALENDARS"])) continue;
+
+			$dat = array(
+				"id"                                                      => $cal["id"],
+				"uri"                                                     => $cal["uri"],
+				"principaluri"                                            => $principalUri,
+				'{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $cal['ctag'] ? $cal['ctag'] : '0',
+				"calendar_class"                                          => "Sabre_CalDAV_Calendar",
+			);
+			foreach ($this->propertyMap as $key=> $field) $dat[$key] = $cal[$field];
+
+			$ret[] = $dat;
+		}
+
+		return $ret;
+	}
+
+
+	/**
+	 * Creates a new calendar for a principal.
+	 *
+	 * If the creation was a success, an id must be returned that can be used to reference
+	 * this calendar in other methods, such as updateCalendar.
+	 *
+	 * @param string $principalUri
+	 * @param string $calendarUri
+	 * @param array $properties
+	 * @throws Sabre_DAV_Exception
+	 * @return string|void
+	 */
+	public function createCalendar($principalUri, $calendarUri, array $properties)
+	{
+
+		$uid = dav_compat_principal2uid($principalUri);
+
+		$r = q("SELECT * FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d AND `uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, $uid, dbesc($calendarUri));
+		if (count($r) > 0) throw new Sabre_DAV_Exception("A calendar with this URI already exists");
+
+		$keys = array("`namespace`", "`namespace_id`", "`ctag`", "`uri`");
+		$vals = array(CALDAV_NAMESPACE_PRIVATE, IntVal($uid), 1, "'" . dbesc($calendarUri) . "'");
+
+		// Default value
+		$sccs       = '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set';
+		$has_vevent = $has_vtodo = 1;
+		if (isset($properties[$sccs])) {
+			if (!($properties[$sccs] instanceof Sabre_CalDAV_Property_SupportedCalendarComponentSet)) {
+				throw new Sabre_DAV_Exception('The ' . $sccs . ' property must be of type: Sabre_CalDAV_Property_SupportedCalendarComponentSet');
+			}
+			$v          = $properties[$sccs]->getValue();
+			$has_vevent = $has_vtodo = 0;
+			foreach ($v as $w) {
+				if (mb_strtolower($w) == "vevent") $has_vevent = 1;
+				if (mb_strtolower($w) == "vtodo") $has_vtodo = 1;
+			}
+		}
+		$keys[] = "`has_vevent`";
+		$keys[] = "`has_vtodo`";
+		$vals[] = $has_vevent;
+		$vals[] = $has_vtodo;
+
+		foreach ($this->propertyMap as $xmlName=> $dbName) {
+			if (isset($properties[$xmlName])) {
+				$keys[] = "`$dbName`";
+				$vals[] = "'" . dbesc($properties[$xmlName]) . "'";
+			}
+		}
+
+		$sql = sprintf("INSERT INTO %s%scalendars (" . implode(', ', $keys) . ") VALUES (" . implode(', ', $vals) . ")", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
+
+		q($sql);
+
+		$x = q("SELECT id FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d AND `uri` = '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, $uid, $calendarUri
+		);
+		return $x[0]["id"];
+
+	}
+
+	/**
+	 * Updates properties for a calendar.
+	 *
+	 * The mutations array uses the propertyName in clark-notation as key,
+	 * and the array value for the property value. In the case a property
+	 * should be deleted, the property value will be null.
+	 *
+	 * This method must be atomic. If one property cannot be changed, the
+	 * entire operation must fail.
+	 *
+	 * If the operation was successful, true can be returned.
+	 * If the operation failed, false can be returned.
+	 *
+	 * Deletion of a non-existent property is always successful.
+	 *
+	 * Lastly, it is optional to return detailed information about any
+	 * failures. In this case an array should be returned with the following
+	 * structure:
+	 *
+	 * array(
+	 *   403 => array(
+	 *      '{DAV:}displayname' => null,
+	 *   ),
+	 *   424 => array(
+	 *      '{DAV:}owner' => null,
+	 *   )
+	 * )
+	 *
+	 * In this example it was forbidden to update {DAV:}displayname.
+	 * (403 Forbidden), which in turn also caused {DAV:}owner to fail
+	 * (424 Failed Dependency) because the request needs to be atomic.
+	 *
+	 * @param string $calendarId
+	 * @param array $mutations
+	 * @return bool|array
+	 */
+	public function updateCalendar($calendarId, array $mutations)
+	{
+
+		$newValues = array();
+		$result    = array(
+			200 => array(), // Ok
+			403 => array(), // Forbidden
+			424 => array(), // Failed Dependency
+		);
+
+		$hasError = false;
+
+		foreach ($mutations as $propertyName=> $propertyValue) {
+
+			// We don't know about this property.
+			if (!isset($this->propertyMap[$propertyName])) {
+				$hasError                   = true;
+				$result[403][$propertyName] = null;
+				unset($mutations[$propertyName]);
+				continue;
+			}
+
+			$fieldName             = $this->propertyMap[$propertyName];
+			$newValues[$fieldName] = $propertyValue;
+
+		}
+
+		// If there were any errors we need to fail the request
+		if ($hasError) {
+			// Properties has the remaining properties
+			foreach ($mutations as $propertyName=> $propertyValue) {
+				$result[424][$propertyName] = null;
+			}
+
+			// Removing unused statuscodes for cleanliness
+			foreach ($result as $status=> $properties) {
+				if (is_array($properties) && count($properties) === 0) unset($result[$status]);
+			}
+
+			return $result;
+
+		}
+
+		$sql = "`ctag` = `ctag` + 1";
+		foreach ($newValues as $key=> $val) $sql .= ", `" . $key . "` = '" . dbesc($val) . "'";
+
+		$sql = sprintf("UPDATE %s%scalendars SET $sql WHERE `id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+
+		q($sql);
+
+		return true;
+
+	}
+
+
+	/**
+	 * Delete a calendar and all it's objects
+	 *
+	 * @param string $calendarId
+	 * @return void
+	 */
+	public function deleteCalendar($calendarId)
+	{
+		q("DELETE FROM %s%scalendarobjects WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+		q("DELETE FROM %s%scalendars WHERE `id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+
+	}
+
+
+	/**
+	 * Returns all calendar objects within a calendar.
+	 *
+	 * Every item contains an array with the following keys:
+	 *   * id - unique identifier which will be used for subsequent updates
+	 *   * calendardata - The iCalendar-compatible calendar data
+	 *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
+	 *   * lastmodified - a timestamp of the last modification time
+	 *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
+	 *   '  "abcdef"')
+	 *   * calendarid - The calendarid as it was passed to this function.
+	 *   * size - The size of the calendar objects, in bytes.
+	 *
+	 * Note that the etag is optional, but it's highly encouraged to return for
+	 * speed reasons.
+	 *
+	 * The calendardata is also optional. If it's not returned
+	 * 'getCalendarObject' will be called later, which *is* expected to return
+	 * calendardata.
+	 *
+	 * If neither etag or size are specified, the calendardata will be
+	 * used/fetched to determine these numbers. If both are specified the
+	 * amount of times this is needed is reduced by a great degree.
+	 *
+	 * @param mixed $calendarId
+	 * @return array
+	 */
+	function getCalendarObjects($calendarId)
+	{
+		$objs = q("SELECT * FROM %s%scalendarobjects WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+		$ret  = array();
+		foreach ($objs as $obj) {
+			$ret[] = array(
+				"id"           => IntVal($obj["id"]),
+				"calendardata" => $obj["calendardata"],
+				"uri"          => $obj["uri"],
+				"lastmodified" => $obj["lastmodified"],
+				"calendarid"   => $calendarId,
+				"etag"         => $obj["etag"],
+				"size"         => IntVal($obj["size"]),
+			);
+		}
+		return $ret;
+	}
+
+	/**
+	 * Returns information from a single calendar object, based on it's object
+	 * uri.
+	 *
+	 * The returned array must have the same keys as getCalendarObjects. The
+	 * 'calendardata' object is required here though, while it's not required
+	 * for getCalendarObjects.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return array
+	 */
+	function getCalendarObject($calendarId, $objectUri)
+	{
+		$o = q("SELECT * FROM %s%scalendarobjects WHERE `calendar_id` = %d AND `uri` = '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId), dbesc($objectUri));
+		if (count($o) > 0) {
+			$o[0]["calendarid"]   = $calendarId;
+			$o[0]["calendardata"] = str_ireplace("Europe/Belgrade", "Europe/Berlin", $o[0]["calendardata"]);
+			return $o[0];
+		} else throw new Sabre_DAV_Exception_NotFound($calendarId . " / " . $objectUri);
+	}
+
+	/**
+	 * Creates a new calendar object.
+	 *
+	 * It is possible return an etag from this function, which will be used in
+	 * the response to this PUT request. Note that the ETag must be surrounded
+	 * by double-quotes.
+	 *
+	 * However, you should only really return this ETag if you don't mangle the
+	 * calendar-data. If the result of a subsequent GET to this object is not
+	 * the exact same as this request body, you should omit the ETag.
+	 *
+	 * @param mixed $calendarId
+	 * @param string $objectUri
+	 * @param string $calendarData
+	 * @return string|null
+	 */
+	function createCalendarObject($calendarId, $objectUri, $calendarData)
+	{
+
+		$calendarData = icalendar_sanitize_string($calendarData);
+
+		$extraData = $this->getDenormalizedData($calendarData);
+
+		q("INSERT INTO %s%scalendarobjects (`calendar_id`, `uri`, `calendardata`, `lastmodified`, `componentType`, `firstOccurence`, `lastOccurence`, `etag`, `size`)
+			VALUES (%d, '%s', '%s', NOW(), '%s', '%s', '%s', '%s', %d)",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId), dbesc($objectUri), addslashes($calendarData), dbesc($extraData['componentType']),
+			dbesc(wdcal_php2MySqlTime($extraData['firstOccurence'])), dbesc(wdcal_php2MySqlTime($extraData['lastOccurence'])), dbesc($extraData["etag"]), IntVal($extraData["size"])
+		);
+
+		$this->increaseCalendarCtag($calendarId);
+		renderCalDavEntry_uri($objectUri);
+
+		return '"' . $extraData['etag'] . '"';
+	}
+
+	/**
+	 * Updates an existing calendarobject, based on it's uri.
+	 *
+	 * It is possible return an etag from this function, which will be used in
+	 * the response to this PUT request. Note that the ETag must be surrounded
+	 * by double-quotes.
+	 *
+	 * However, you should only really return this ETag if you don't mangle the
+	 * calendar-data. If the result of a subsequent GET to this object is not
+	 * the exact same as this request body, you should omit the ETag.
+	 *
+	 * @param mixed $calendarId
+	 * @param string $objectUri
+	 * @param string $calendarData
+	 * @return string|null
+	 */
+	function updateCalendarObject($calendarId, $objectUri, $calendarData)
+	{
+		$calendarData = icalendar_sanitize_string($calendarData);
+
+		$extraData = $this->getDenormalizedData($calendarData);
+
+		q("UPDATE %s%scalendarobjects SET `calendardata` = '%s', `lastmodified` = NOW(), `etag` = '%s', `size` = %d, `componentType` = '%s', `firstOccurence` = '%s', `lastOccurence` = '%s'
+			WHERE `calendar_id` = %d AND `uri` = '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($calendarData), dbesc($extraData["etag"]), IntVal($extraData["size"]), dbesc($extraData["componentType"]),
+			dbesc(wdcal_php2MySqlTime($extraData["firstOccurence"])), dbesc(wdcal_php2MySqlTime($extraData["lastOccurence"])), IntVal($calendarId), dbesc($objectUri));
+
+		$this->increaseCalendarCtag($calendarId);
+		renderCalDavEntry_uri($objectUri);
+
+		return '"' . $extraData['etag'] . '"';
+	}
+
+	/**
+	 * Deletes an existing calendar object.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return void
+	 */
+	function deleteCalendarObject($calendarId, $objectUri)
+	{
+		$r = q("SELECT `id` FROM %s%scalendarobjects WHERE `calendar_id` = %d AND `uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId), dbesc($objectUri));
+		if (count($r) == 0) throw new Sabre_DAV_Exception_NotFound();
+
+		q("DELETE FROM %s%scalendarobjects WHERE `calendar_id` = %d AND `uri` = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId), dbesc($objectUri));
+
+		$this->increaseCalendarCtag($calendarId);
+		renderCalDavEntry_calobj_id($r[0]["id"]);
+	}
+}

dav/common/dav_caldav_backend_virtual.inc.php

@@ -0,0 +1,186 @@
+<?php
+
+abstract class Sabre_CalDAV_Backend_Virtual extends Sabre_CalDAV_Backend_Common
+{
+
+
+
+	/**
+	 * @static
+	 * @abstract
+	 * @param int $calendarId
+	 * @param string $uri
+	 * @return array
+	 */
+	/*
+	abstract public function getItemsByUri($calendarId, $uri);
+    */
+
+	/**
+	 * @static
+	 * @param int $uid
+	 * @param int $namespace
+	 */
+	static public function invalidateCache($uid = 0, $namespace = 0) {
+		q("DELETE FROM %s%scal_virtual_object_sync WHERE `uid` = %d AND `namespace` = %d",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($uid), IntVal($namespace));
+	}
+
+	/**
+	 * @static
+	 * @abstract
+	 * @param int $calendarId
+	 */
+	static abstract protected function createCache_internal($calendarId);
+
+	/**
+	 * @static
+	 * @param int $calendarId
+	 */
+	static protected function createCache($calendarId) {
+		$calendarId = IntVal($calendarId);
+		q("DELETE FROM %s%scal_virtual_object_cache WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calendarId);
+		static::createCache_internal($calendarId);
+		q("REPLACE INTO %s%scal_virtual_object_sync (`calendar_id`, `date`) VALUES (%d, NOW())", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calendarId);
+	}
+
+	/**
+	 * @param string $calendarId
+	 * @return array
+	 */
+	public function getCalendarObjects($calendarId)
+	{
+		$calendarId = IntVal($calendarId);
+		$r = q("SELECT COUNT(*) n FROM %s%scal_virtual_object_sync WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calendarId);
+
+		if ($r[0]["n"] == 0) static::createCache($calendarId);
+
+		$r = q("SELECT * FROM %s%scal_virtual_object_cache WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calendarId);
+
+		$ret = array();
+		foreach ($r as $obj) {
+			$ret[] = array(
+				"id" => IntVal($obj["data_uri"]),
+				"calendardata" => $obj["calendardata"],
+				"uri" => $obj["data_uri"],
+				"lastmodified" => $obj["date"],
+				"calendarid" => $calendarId,
+				"etag" => $obj["etag"],
+				"size" => IntVal($obj["size"]),
+			);
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * Returns information from a single calendar object, based on it's object
+	 * uri.
+	 *
+	 * The returned array must have the same keys as getCalendarObjects. The
+	 * 'calendardata' object is required here though, while it's not required
+	 * for getCalendarObjects.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return array
+	 */
+	public function getCalendarObject($calendarId, $objectUri)
+	{
+		$calendarId = IntVal($calendarId);
+		$r = q("SELECT COUNT(*) n FROM %s%scal_virtual_object_sync WHERE `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($calendarId));
+
+		if ($r[0]["n"] == 0) static::createCache($calendarId);
+
+		$r = q("SELECT * FROM %s%scal_virtual_object_cache WHERE `data_uri` = '%s' AND `calendar_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($objectUri), IntVal($calendarId));
+		if (count($r) == 0) throw new Sabre_DAV_Exception_NotFound();
+
+		$obj = $r[0];
+		$ret = array(
+			"id" => IntVal($obj["data_uri"]),
+			"calendardata" => $obj["calendardata"],
+			"uri" => $obj["data_uri"],
+			"lastmodified" => $obj["date"],
+			"calendarid" => $calendarId,
+			"etag" => $obj["etag"],
+			"size" => IntVal($obj["size"]),
+		);
+		return $ret;
+	}
+
+
+
+	/**
+	 * Creates a new calendar for a principal.
+	 *
+	 * If the creation was a success, an id must be returned that can be used to reference
+	 * this calendar in other methods, such as updateCalendar.
+	 *
+	 * @param string $principalUri
+	 * @param string $calendarUri
+	 * @param array $properties
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return void
+	 */
+	public function createCalendar($principalUri, $calendarUri, array $properties)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Delete a calendar and all it's objects
+	 *
+	 * @param string $calendarId
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return void
+	 */
+	public function deleteCalendar($calendarId)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+
+	/**
+	 * Creates a new calendar object.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @param string $calendarData
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return null|string|void
+	 */
+	function createCalendarObject($calendarId, $objectUri, $calendarData)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Updates an existing calendarobject, based on it's uri.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @param string $calendarData
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return null|string|void
+	 */
+	function updateCalendarObject($calendarId, $objectUri, $calendarData)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Deletes an existing calendar object.
+	 *
+	 * @param string $calendarId
+	 * @param string $objectUri
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return void
+	 */
+	function deleteCalendarObject($calendarId, $objectUri)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+
+}

dav/common/dav_caldav_calendar_virtual.inc.php

@@ -0,0 +1,44 @@
+<?php
+
+class Sabre_CalDAV_Calendar_Virtual extends Sabre_CalDAV_Calendar {
+
+	/**
+	 * 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(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'],
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-write',
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $this->calendarInfo['principaluri'] . '/calendar-proxy-read',
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{' . Sabre_CalDAV_Plugin::NS_CALDAV . '}read-free-busy',
+				'principal' => '{DAV:}authenticated',
+				'protected' => true,
+			),
+
+		);
+
+	}
+}

dav/common/dav_carddav_backend_std.inc.php

@@ -14,6 +14,23 @@
 class Sabre_CardDAV_Backend_Std extends Sabre_CardDAV_Backend_Abstract
 {
 
+	/**
+	 * @var null|Sabre_CardDAV_Backend_Std
+	 */
+	private static $instance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_CardDAV_Backend_Std
+	 */
+	public static function getInstance() {
+		if (self::$instance == null) {
+			self::$instance = new Sabre_CardDAV_Backend_Std();
+		}
+		return self::$instance;
+	}
+
+
 	/**
 	 * Sets up the object
 	 */

dav/common/dav_user_calendars.inc.php

@@ -1,14 +1,6 @@
 <?php
 
-/**
- * The UserCalenders class contains all calendars associated to one user 
- * 
- * @package Sabre
- * @subpackage CalDAV
- * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
- * @author Evert Pot (http://www.rooftopsolutions.nl/) 
- * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
- */
+
 class Sabre_CalDAV_AnimexxUserCalendars implements Sabre_DAV_IExtendedCollection, Sabre_DAVACL_IACL {
 
     /**
@@ -21,7 +13,7 @@ class Sabre_CalDAV_AnimexxUserCalendars implements Sabre_DAV_IExtendedCollection
     /**
      * CalDAV backends
      * 
-     * @var array|Sabre_CalDAV_Backend_Abstract[]
+     * @var array|Sabre_CalDAV_Backend_Common[]
      */
     protected $caldavBackends;
 
@@ -36,7 +28,7 @@ class Sabre_CalDAV_AnimexxUserCalendars implements Sabre_DAV_IExtendedCollection
      * Constructor 
      * 
      * @param Sabre_DAVACL_IPrincipalBackend $principalBackend
-     * @param array|Sabre_CalDAV_Backend_Abstract $caldavBackends
+     * @param array|Sabre_CalDAV_Backend_Common[] $caldavBackends
      * @param mixed $userUri 
      */
     public function __construct(Sabre_DAVACL_IPrincipalBackend $principalBackend, $caldavBackends, $userUri) {
@@ -130,7 +122,7 @@ class Sabre_CalDAV_AnimexxUserCalendars implements Sabre_DAV_IExtendedCollection
 	 * Returns a single calendar, by name
 	 *
 	 * @param string $name
-	 * @throws Sabre_DAV_Exception_FileNotFound
+	 * @throws Sabre_DAV_Exception_NotFound
 	 * @todo needs optimizing
 	 * @return \Sabre_CalDAV_Calendar|\Sabre_DAV_INode
 	 */
@@ -141,7 +133,7 @@ class Sabre_CalDAV_AnimexxUserCalendars implements Sabre_DAV_IExtendedCollection
                 return $child;
 
         }
-        throw new Sabre_DAV_Exception_FileNotFound('Calendar with name \'' . $name . '\' could not be found');
+        throw new Sabre_DAV_Exception_NotFound('Calendar with name \'' . $name . '\' could not be found');
 
     }
 

dav/common/wdcal.js

@@ -16,16 +16,19 @@ function wdcal_edit_getStartEnd() {
 
 function wdcal_edit_checktime_startChanged() {
 	"use strict";
+
 	var time = wdcal_edit_getStartEnd();
 	if (time.start.getTime() >= time.end.getTime()) {
 		var newend = new Date(time.start.getTime() + 3600000);
 		$("#cal_end_date").datepicker("setDate", newend);
 		$.timePicker("#cal_end_time").setTime(newend);
 	}
+	wdcal_edit_recur_recalc();
 }
 
 function wdcal_edit_checktime_endChanged() {
 	"use strict";
+
 	var time = wdcal_edit_getStartEnd();
 	if (time.start.getTime() >= time.end.getTime()) {
 		var newstart = new Date(time.end.getTime() - 3600000);
@@ -34,7 +37,27 @@ function wdcal_edit_checktime_endChanged() {
 	}
 }
 
-function wdcal_edit_init(dateFormat) {
+function wdcal_edit_recur_recalc() {
+	"use strict";
+
+	var start = $("#cal_start_date").datepicker("getDate");
+	$(".rec_month_name").text($.datepicker._defaults.monthNames[start.getMonth()]);
+	$("#rec_yearly_day option[value=bymonthday], #rec_monthly_day option[value=bymonthday]").text($("#rec_yearly_day option[value=bymonthday]").data("orig").replace("#num#", start.getDate()));
+	var month = new Date(start.getFullYear(), start.getMonth() + 1, 0);
+	var monthlast = month.getDate() - start.getDate() + 1;
+	$("#rec_yearly_day option[value=bymonthday_neg], #rec_monthly_day option[value=bymonthday_neg]").text($("#rec_yearly_day option[value=bymonthday_neg]").data("orig").replace("#num#", monthlast));
+	var wk = Math.ceil(start.getDate() / 7);
+	var wkname = $.datepicker._defaults.dayNames[start.getDay()];
+	$("#rec_yearly_day option[value=byday], #rec_monthly_day option[value=byday]").text(
+		$("#rec_yearly_day option[value=byday]").data("orig").replace("#num#", wk).replace("#wkday#", wkname)
+	);
+	var wk_inv = Math.ceil(monthlast / 7);
+	$("#rec_yearly_day option[value=byday_neg], #rec_monthly_day option[value=byday_neg]").text(
+		$("#rec_yearly_day option[value=byday_neg]").data("orig").replace("#num#", wk_inv).replace("#wkday#", wkname)
+	);
+}
+
+function wdcal_edit_init(dateFormat, base_path) {
 	"use strict";
 
 	$("#cal_color").colorPicker();
@@ -49,6 +72,8 @@ function wdcal_edit_init(dateFormat) {
 		"dateFormat": dateFormat
 	}).on("change", wdcal_edit_checktime_endChanged);
 
+	$("#rec_until_date").datepicker({ "dateFormat": dateFormat });
+
 	$("#notification").on("click change", function() {
 		if ($(this).prop("checked")) $("#notification_detail").show();
 		else ($("#notification_detail")).hide();
@@ -58,4 +83,111 @@ function wdcal_edit_init(dateFormat) {
 		if ($(this).prop("checked")) $("#cal_end_time, #cal_start_time").hide();
 		else $("#cal_end_time, #cal_start_time").show();
 	}).change();
+
+	$("#rec_frequency").on("click change", function() {
+		var val = $("#rec_frequency").val();
+		if (val == "") $("#rec_details").hide();
+		else $("#rec_details").show();
+
+		if (val == "daily") $(".rec_daily").show();
+		else $(".rec_daily").hide();
+
+		if (val == "weekly") $(".rec_weekly").show();
+		else $(".rec_weekly").hide();
+
+		if (val == "monthly") $(".rec_monthly").show();
+		else $(".rec_monthly").hide();
+
+		if (val == "yearly") $(".rec_yearly").show();
+		else $(".rec_yearly").hide();
+	}).change();
+
+	$("#rec_until_type").on("click change", function() {
+		var val = $("#rec_until_type").val();
+
+		if (val == "count") $("#rec_until_count").show();
+		else $("#rec_until_count").hide();
+
+		if (val == "date") $("#rec_until_date").show();
+		else $("#rec_until_date").hide();
+	}).change();
+
+	$("#rec_yearly_day option, #rec_monthly_day option").each(function() {
+		$(this).data("orig", $(this).text());
+	});
+
+	wdcal_edit_recur_recalc();
+
+	$(document).on("click", ".exception_remover", function(ev) {
+		ev.preventDefault();
+		var $this = $(this),
+			$par = $this.parents(".rec_exceptions");
+		$this.parents(".except").remove();
+		if ($par.find(".rec_exceptions_holder").children().length == 0) {
+			$par.find(".rec_exceptions_holder").hide();
+			$par.find(".rec_exceptions_none").show();
+		}
+	});
+
+	$(".exception_adder").click(function(ev) {
+		ev.preventDefault();
+
+		var exceptions = [];
+		$(".rec_exceptions .except input").each(function() {
+			exceptions.push($(this).val());
+		});
+		var rec_weekly_byday = [];
+		$(".rec_weekly_byday:checked").each(function() {
+			rec_weekly_byday.push($(this).val());
+		});
+		var rec_daily_byday = [];
+		$(".rec_daily_byday:checked").each(function() {
+			rec_daily_byday.push($(this).val());
+		});
+		var opts = {
+			"start_date": $("input[name=start_date]").val(),
+			"start_time": $("input[name=start_time]").val(),
+			"end_date": $("input[name=end_date]").val(),
+			"end_time": $("input[name=end_time]").val(),
+			"rec_frequency": $("#rec_frequency").val(),
+			"rec_interval": $("#rec_interval").val(),
+			"rec_until_type": $("#rec_until_type").val(),
+			"rec_until_count": $("#rec_until_count").val(),
+			"rec_until_date": $("#rec_until_date").val(),
+			"rec_weekly_byday": rec_weekly_byday,
+			"rec_daily_byday": rec_daily_byday,
+			"rec_weekly_wkst": $("input[name=rec_weekly_wkst]:checked").val(),
+			"rec_monthly_day": $("#rec_monthly_day").val(),
+			"rec_yearly_day": $("#rec_yearly_day").val(),
+			"rec_exceptions": exceptions
+		};
+		if ($("#cal_allday").prop("checked")) opts["allday"] = 1;
+		var $dial = $("<div id='exception_setter_dialog'>Loading...</div>");
+		$dial.appendTo("body");
+		$dial.dialog({
+			"width": 400,
+			"height": 300,
+			"title": "Exceptions"
+		});
+		$dial.load(base_path + "getExceptionDates/", opts, function() {
+			$dial.find(".exception_selector_link").click(function(ev2) {
+				ev2.preventDefault();
+				var ts = $(this).data("timestamp");
+				var str = $(this).html();
+				var $part = $("<div data-timestamp='" + ts + "' class='except'><input type='hidden' class='rec_exception' name='rec_exceptions[]' value='" + ts + "'><a href='#' class='exception_remover'>[remove]</a> " + str + "</div>");
+				var found = false;
+				$(".rec_exceptions_holder .except").each(function() {
+					if (!found && ts < $(this).data("timestamp")) {
+						found = true;
+						$part.insertBefore(this);
+					}
+				});
+				if (!found) $(".rec_exceptions_holder").append($part);
+				$(".rec_exceptions .rec_exceptions_holder").show();
+				$(".rec_exceptions .rec_exceptions_none").hide();
+
+				$dial.dialog("destroy").remove();
+			})
+		});
+	});
 }

dav/common/wdcal/js/jquery.calendar.js

@@ -5,8 +5,10 @@
 (function ($) {
 	"use strict";
 
-	var __WDAY = new Array(i18n.xgcalendar.dateformat.sun, i18n.xgcalendar.dateformat.mon, i18n.xgcalendar.dateformat.tue, i18n.xgcalendar.dateformat.wed, i18n.xgcalendar.dateformat.thu, i18n.xgcalendar.dateformat.fri, i18n.xgcalendar.dateformat.sat);
-	var __MonthName = new Array(i18n.xgcalendar.dateformat.jan, i18n.xgcalendar.dateformat.feb, i18n.xgcalendar.dateformat.mar, i18n.xgcalendar.dateformat.apr, i18n.xgcalendar.dateformat.may, i18n.xgcalendar.dateformat.jun, i18n.xgcalendar.dateformat.jul, i18n.xgcalendar.dateformat.aug, i18n.xgcalendar.dateformat.sep, i18n.xgcalendar.dateformat.oct, i18n.xgcalendar.dateformat.nov, i18n.xgcalendar.dateformat.dec);
+	var __WDAY = $.datepicker._defaults.dayNamesShort;
+		//new Array(i18n.xgcalendar.dateformat.sun, i18n.xgcalendar.dateformat.mon, i18n.xgcalendar.dateformat.tue, i18n.xgcalendar.dateformat.wed, i18n.xgcalendar.dateformat.thu, i18n.xgcalendar.dateformat.fri, i18n.xgcalendar.dateformat.sat);
+	var __MonthName = $.datepicker._defaults.monthNamesShort;
+		//new Array(i18n.xgcalendar.dateformat.jan, i18n.xgcalendar.dateformat.feb, i18n.xgcalendar.dateformat.mar, i18n.xgcalendar.dateformat.apr, i18n.xgcalendar.dateformat.may, i18n.xgcalendar.dateformat.jun, i18n.xgcalendar.dateformat.jul, i18n.xgcalendar.dateformat.aug, i18n.xgcalendar.dateformat.sep, i18n.xgcalendar.dateformat.oct, i18n.xgcalendar.dateformat.nov, i18n.xgcalendar.dateformat.dec);
 
 
 	function dateFormat(format) {
@@ -769,8 +771,8 @@
 			for (i = 0; i < l; i++) {
 				var $col = $container.find(".tgCol" + i);
 				for (var j = 0; j < events[i].length; j++) {
-					if (events[i][j].event["color"] && events[i][j].event["color"].match(/^#[0-9a-f]{6}$/i)) {
-						c = events[i][j].event["color"];
+					if (events[i][j].event["color"] && events[i][j].event["color"].match(/^[0-9a-f]{6}$/i)) {
+						c = "#" + events[i][j].event["color"];
 					}
 					else {
 						c = option.std_color;
@@ -787,7 +789,7 @@
 		function getTitle(event) {
 			var timeshow, eventshow;
 			var showtime = event["is_allday"] != 1;
-			eventshow = event["subject"];
+			eventshow = event["summary"];
 			var startformat = getymformat(event["start"], null, showtime, true);
 			var endformat = getymformat(event["end"], event["start"], showtime, true);
 			timeshow = dateFormat.call(event["start"], startformat) + " - " + dateFormat.call(event["end"], endformat);
@@ -819,7 +821,7 @@
 			var p = { bdcolor:theme[0], bgcolor2:theme[0], bgcolor1:theme[2], width:"70%", icon:"", title:"", data:"" };
 			p.starttime = pZero(e.st.hour) + ":" + pZero(e.st.minute);
 			p.endtime = pZero(e.et.hour) + ":" + pZero(e.et.minute);
-			p.content = e.event["subject"];
+			p.content = e.event["summary"];
 			p.title = getTitle(e.event);
 			var icons = [];
 			if (e.event["has_notification"] == 1) icons.push("<I class=\"cic cic-tmr\">&nbsp;</I>");
@@ -1146,12 +1148,12 @@
 			var p = { color:theme[2], title:"", extendClass:"", extendHTML:"", data:"" };
 
 			p.title = getTitle(e.event);
-			p.id = "bbit_cal_event_" + e.event["uri"];
+			p.id = "bbit_cal_event_" + e.event["jq_id"];
 			if (option.enableDrag && e.event["is_editable_quick"] == 1) {
 				p.eclass = "drag";
 			}
 			else {
-				p.eclass = "cal_" + e.event["uri"];
+				p.eclass = "cal_" + e.event["jq_id"];
 			}
 			p.eclass += " " + (e.event["is_editable"] ? "editable" : "not_editable");
 			var sp = "<span style=\"cursor: pointer\">{content}</span>";
@@ -1175,10 +1177,10 @@
 			}
 			var cen;
 			if (!e.allday && !sf) {
-				cen = pZero(e.st.hour) + ":" + pZero(e.st.minute) + " " + e.event["subject"];
+				cen = pZero(e.st.hour) + ":" + pZero(e.st.minute) + " " + e.event["summary"];
 			}
 			else {
-				cen = e.event["subject"];
+				cen = e.event["summary"];
 			}
 			var content = [];
 			if (cen.indexOf("Geburtstag:") == 0) {
@@ -1294,7 +1296,7 @@
 					}
 					if (option.eventItems[i]["start"] >= es) {
 						for (var j = 0; j < jl; j++) {
-							if (option.eventItems[i]["uri"] == events[j]["uri"] && option.eventItems[i]["start"] < start) {
+							if (option.eventItems[i]["jq_id"] == events[j]["jq_id"] && option.eventItems[i]["start"] < start) {
 								events.splice(j, 1); //for duplicated event
 								jl--;
 								break;
@@ -1477,7 +1479,7 @@
 			$("#bbit-cs-buddle").css("visibility", "hidden");
 			var calid = $("#bbit-cs-id").val();
 			var param = [
-				{ "name":"calendarId", value:calid },
+				{ "name":"jq_id", value:calid },
 				{ "name":"type", value:type}
 			];
 			var de = rebyKey(calid, true);
@@ -1609,8 +1611,8 @@
 				var location = "";
 				if (data["location"] != "") location = data["location"] + ", ";
 				$("#bbit-cs-buddle-timeshow").html(location + ss.join(""));
-				$bud.find(".bbit-cs-what").html(data["subject"]).attr("href", data["url_detail"]);
-				$("#bbit-cs-id").val(data["uri"]);
+				$bud.find(".bbit-cs-what").html(data["summary"]).attr("href", data["url_detail"]);
+				$("#bbit-cs-id").val(data["jq_id"]);
 				$bud.data("cdata", data);
 				$bud.css({ "visibility":"visible", left:pos.left, top:pos.top });
 
@@ -1684,11 +1686,11 @@
 					return false;
 				}
 				option.isloading = true;
-				var id = data["uri"];
+				var id = data["jq_id"];
 				var os = data["start"];
 				var od = data["end"];
 				var param = [
-					{ "name":"calendarId", value:id },
+					{ "name":"jq_id", value:id },
 					{ "name":"CalendarStartTime", value:Math.floor(start.getTime() / 1000) },
 					{ "name":"CalendarEndTime", value:Math.floor(end.getTime() / 1000) }
 				];
@@ -1744,7 +1746,7 @@
 				temparr.push('<table class="cb-table"><tbody><tr><th class="cb-key">');
 				temparr.push(i18n.xgcalendar.time, ':</th><td class=cb-value><div id="bbit-cal-buddle-timeshow"></div></td></tr><tr><th class="cb-key">');
 				temparr.push(i18n.xgcalendar.content, ':</th><td class="cb-value"><div class="textbox-fill-wrapper"><div class="textbox-fill-mid"><input id="bbit-cal-what" class="textbox-fill-input"/></div></div><div class="cb-example">');
-				temparr.push(i18n.xgcalendar.example, '</div></td></tr></tbody></table><input id="bbit-cal-start" type="hidden"/><input id="bbit-cal-end" type="hidden"/><input id="bbit-cal-allday" type="hidden"/><input id="bbit-cal-quickAddBTN" value="');
+				temparr.push(i18n.xgcalendar.example, '</div></td></tr></tbody></table><input id="bbit-cal-start" type="hidden"/><input id="bbit-cal-end" type="hidden"/><input id="bbit-cal-allday" type="hidden"/><input value="');
 				temparr.push(i18n.xgcalendar.create_event, '" type="submit"/>&nbsp; <a href="" class="lk bbit-cal-editLink">');
 				temparr.push(i18n.xgcalendar.update_detail, ' <StrONG>&gt;&gt;</StrONG></SPAN></div></div></div><tr><td><div id="bl1" class="bubble-corner"><div class="bubble-sprite bubble-bl"></div></div><td><div class="bubble-bottom"></div><td><div id="br1" class="bubble-corner"><div class="bubble-sprite bubble-br"></div></div></tr></tbody></table><div id="bubbleClose1" class="bubble-closebutton"></div><div id="prong2" class="prong"><div class=bubble-sprite></div></div></div>');
 				temparr.push('</form>');
@@ -1789,7 +1791,6 @@
 							param[param.length] = option.extParam[pi];
 						}
 					}
-
 					if (option.quickAddHandler && $.isFunction(option.quickAddHandler)) {
 						option.quickAddHandler.call(this, param);
 						$("#bbit-cal-buddle").css("visibility", "hidden");
@@ -1804,8 +1805,9 @@
 							ed = new Date(dateend),
 							diff = DateDiff("d", sd, ed);
 						var newdata = {
-							"uri":"",
-							"subject":what,
+							"jq_id":"",
+							"ev_id":"",
+							"summary":what,
 							"start":sd,
 							"end":ed,
 							"is_allday":(allday == "1" ? 1 : 0),
@@ -1886,7 +1888,7 @@
 				var sl = option.eventItems.length;
 				var i = -1;
 				for (var j = 0; j < sl; j++) {
-					if (option.eventItems[j]["uri"] == key) {
+					if (option.eventItems[j]["jq_id"] == key) {
 						i = j;
 						break;
 					}
@@ -2352,7 +2354,7 @@
 									d.target.hide();
 									ny = gP(gh.sh, gh.sm);
 									d.top = ny;
-									tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["subject"], false, false, data["color"]);
+									tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["summary"], false, false, data["color"]);
 									cpwrap = $("<div class='ca-evpi drag-chip-wrapper' style='top:" + ny + "px'/>").html(tempdata);
 									evid = ".tgOver" + d.target.parent().data("col");
 									$gridcontainer.find(evid).append(cpwrap);
@@ -2389,7 +2391,7 @@
 										//log.info("ny=" + ny);
 										gh = gW(ny, ny + d.h);
 										//log.info("sh=" + gh.sh + ",sm=" + gh.sm);
-										tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["subject"], false, false, data["color"]);
+										tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["summary"], false, false, data["color"]);
 										d.cpwrap.css("top", ny + "px").html(tempdata);
 									}
 									d.ny = ny;
@@ -2415,7 +2417,7 @@
 									d.target.hide();
 									ny = gP(gh.sh, gh.sm);
 									d.top = ny;
-									tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["subject"], "100%", true, data["color"]);
+									tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["summary"], "100%", true, data["color"]);
 									cpwrap = $("<div class='ca-evpi drag-chip-wrapper' style='top:" + ny + "px'/>").html(tempdata);
 									evid = ".tgOver" + d.target.parent().data("col");
 									$gridcontainer.find(evid).append(cpwrap);
@@ -2427,7 +2429,7 @@
 									nh = pnh > 1 ? nh - pnh + Math.ceil(option.hour_height / 2) : nh - pnh;
 									if (d.nh != nh) {
 										gh = gW(d.top, d.top + nh);
-										tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["subject"], "100%", true, data["color"]);
+										tempdata = buildtempdayevent(gh.sh, gh.sm, gh.eh, gh.em, gh.h, data["summary"], "100%", true, data["color"]);
 										d.cpwrap.html(tempdata);
 									}
 									d.nh = nh;

dav/common/wdcal/js/wdCalendar_lang_DE.js

@@ -7,26 +7,7 @@ var i18n = $.extend({}, i18n || {}, {
             "year_index": 2,
             "month_index": 1,
             "day_index": 0,
-            "day": "d",
-            "sun": "So",
-            "mon": "Mo",
-            "tue": "Di",
-            "wed": "Mi",
-            "thu": "Do",
-            "fri": "Fr",
-            "sat": "Sa",
-            "jan": "Jan",
-            "feb": "Feb",
-            "mar": "Mär",
-            "apr": "Apr",
-            "may": "Mai",
-            "jun": "Jun",
-            "jul": "Jul",
-            "aug": "Aug",
-            "sep": "Sep",
-            "oct": "Okt",
-            "nov": "Nov",
-            "dec": "Dez"
+            "day": "d"
         },
         "no_implemented": "Nicht eingebaut",
         "to_date_view": "Zum aktuellen Datum gehen",

dav/common/wdcal/js/wdCalendar_lang_EN.js

@@ -7,26 +7,7 @@ var i18n = $.extend({}, i18n || {}, {
 			"year_index": 2,
 			"month_index": 1,
 			"day_index": 0,
-			"day": "d",
-			"sun": "Su",
-			"mon": "Mo",
-			"tue": "Tu",
-			"wed": "Mi",
-			"thu": "Th",
-			"fri": "Fr",
-			"sat": "Sa",
-			"jan": "Jan",
-			"feb": "Feb",
-			"mar": "Mar",
-			"apr": "Apr",
-			"may": "May",
-			"jun": "Jun",
-			"jul": "Jul",
-			"aug": "Aug",
-			"sep": "Sep",
-			"oct": "Oct",
-			"nov": "Nov",
-			"dec": "Dec"
+			"day": "d"
 		},
 		"no_implemented": "Not implemented",
 		"to_date_view": "Go to today",

dav/common/wdcal_backend.inc.php

@@ -0,0 +1,238 @@
+<?php
+
+
+
+
+/**
+ * @param mixed $obj
+ * @return string
+ */
+function wdcal_jsonp_encode($obj)
+{
+	$str = json_encode($obj);
+	if (isset($_REQUEST["callback"])) {
+		$str = $_REQUEST["callback"] . "(" . $str . ")";
+	}
+	return $str;
+}
+
+
+/**
+ * @param string $day
+ * @param int $weekstartday
+ * @param int $num_days
+ * @param string $type
+ * @return array
+ */
+function wdcal_get_list_range_params($day, $weekstartday, $num_days, $type)
+{
+	$phpTime = IntVal($day);
+	switch ($type) {
+		case "month":
+			$st = mktime(0, 0, 0, date("m", $phpTime), 1, date("Y", $phpTime));
+			$et = mktime(0, 0, -1, date("m", $phpTime) + 1, 1, date("Y", $phpTime));
+			break;
+		case "week":
+			//suppose first day of a week is monday
+			$monday = date("d", $phpTime) - date('N', $phpTime) + 1;
+			//echo date('N', $phpTime);
+			$st = mktime(0, 0, 0, date("m", $phpTime), $monday, date("Y", $phpTime));
+			$et = mktime(0, 0, -1, date("m", $phpTime), $monday + 7, date("Y", $phpTime));
+			break;
+		case "multi_days":
+			//suppose first day of a week is monday
+			$monday = date("d", $phpTime) - date('N', $phpTime) + $weekstartday;
+			//echo date('N', $phpTime);
+			$st = mktime(0, 0, 0, date("m", $phpTime), $monday, date("Y", $phpTime));
+			$et = mktime(0, 0, -1, date("m", $phpTime), $monday + $num_days, date("Y", $phpTime));
+			break;
+		case "day":
+			$st = mktime(0, 0, 0, date("m", $phpTime), date("d", $phpTime), date("Y", $phpTime));
+			$et = mktime(0, 0, -1, date("m", $phpTime), date("d", $phpTime) + 1, date("Y", $phpTime));
+			break;
+		default:
+			return array(0, 0);
+	}
+	return array($st, $et);
+}
+
+
+/**
+ * @param Sabre_DAV_Server $server
+ * @param string $right
+ * @return null|Sabre_CalDAV_Calendar
+ */
+function wdcal_print_feed_getCal(&$server, $right)
+{
+	$cals     = dav_get_current_user_calendars($server, $right);
+	$calfound = null;
+	for ($i = 0; $i < count($cals) && $calfound === null; $i++) {
+		$prop = $cals[$i]->getProperties(array("id"));
+		if (isset($prop["id"]) && (!isset($_REQUEST["cal"]) || in_array($prop["id"], $_REQUEST["cal"]))) $calfound = $cals[$i];
+	}
+	return $calfound;
+}
+
+
+/**
+ *
+ */
+function wdcal_print_feed($base_path = "")
+{
+	$server = dav_create_server(true, true, false);
+
+	$ret = null;
+
+	$method = $_GET["method"];
+	switch ($method) {
+		case "add":
+			$cs = wdcal_print_feed_getCal($server, DAV_ACL_WRITE);
+			if ($cs == null) {
+				echo wdcal_jsonp_encode(array('IsSuccess' => false,
+											  'Msg'       => t('No access')));
+				killme();
+			}
+			try {
+				$item      = dav_create_empty_vevent();
+				$component = dav_get_eventComponent($item);
+				$component->add("SUMMARY", icalendar_sanitize_string(dav_compat_parse_text_serverside("CalendarTitle")));
+
+				if (isset($_REQUEST["allday"])) $type = Sabre_VObject_Property_DateTime::DATE;
+				else $type = Sabre_VObject_Property_DateTime::LOCALTZ;
+
+				$datetime_start = new Sabre_VObject_Property_DateTime("DTSTART");
+				$datetime_start->setDateTime(new DateTime(date("Y-m-d H:i:s", IntVal($_REQUEST["CalendarStartTime"]))), $type);
+				$datetime_end = new Sabre_VObject_Property_DateTime("DTEND");
+				$datetime_end->setDateTime(new DateTime(date("Y-m-d H:i:s", IntVal($_REQUEST["CalendarEndTime"]))), $type);
+
+				$component->add($datetime_start);
+				$component->add($datetime_end);
+
+				$uid  = $component->__get("UID");
+				$data = $item->serialize();
+
+				$cs->createFile($uid . ".ics", $data);
+
+				$ret = array(
+					'IsSuccess' => true,
+					'Msg'       => 'add success',
+					'Data'      => $uid . ".ics",
+				);
+
+			} catch (Exception $e) {
+				$ret = array(
+					'IsSuccess' => false,
+					'Msg'       => $e->__toString(),
+				);
+			}
+			break;
+		case "list":
+			$weekstartday = (isset($_REQUEST["weekstartday"]) ? IntVal($_REQUEST["weekstartday"]) : 1); // 1 = Monday
+			$num_days     = (isset($_REQUEST["num_days"]) ? IntVal($_REQUEST["num_days"]) : 7);
+			$ret          = null;
+
+			$date          = wdcal_get_list_range_params($_REQUEST["showdate"], $weekstartday, $num_days, $_REQUEST["viewtype"]);
+			$ret           = array();
+			$ret['events'] = array();
+			$ret["issort"] = true;
+			$ret["start"]  = $date[0];
+			$ret["end"]    = $date[1];
+			$ret['error']  = null;
+
+			$cals = dav_get_current_user_calendars($server, DAV_ACL_READ);
+			foreach ($cals as $cal) {
+				$prop = $cal->getProperties(array("id"));
+				if (isset($prop["id"]) && (!isset($_REQUEST["cal"]) || in_array($prop["id"], $_REQUEST["cal"]))) {
+					$backend       = wdcal_calendar_factory_by_id($prop["id"]);
+					$events        = $backend->listItemsByRange($prop["id"], $date[0], $date[1], $base_path);
+					$ret["events"] = array_merge($ret["events"], $events);
+				}
+			}
+
+			$tmpev = array();
+			foreach ($ret["events"] as $e) {
+				if (!isset($tmpev[$e["start"]])) $tmpev[$e["start"]] = array();
+				$tmpev[$e["start"]][] = $e;
+			}
+			ksort($tmpev);
+			$ret["events"] = array();
+			foreach ($tmpev as $e) foreach ($e as $f) $ret["events"][] = $f;
+
+			break;
+		case "update":
+			$r = q("SELECT `calendarobject_id`, `calendar_id` FROM %s%sjqcalendar WHERE `id`=%d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($_REQUEST["jq_id"]));
+			if (count($r) != 1) {
+				echo wdcal_jsonp_encode(array('IsSuccess' => false,
+											  'Msg'       => t('No access')));
+				killme();
+			}
+			try {
+				$cs      = dav_get_current_user_calendar_by_id($server, $r[0]["calendar_id"], DAV_ACL_READ);
+				$obj_uri = Sabre_CalDAV_Backend_Common::loadCalendarobjectById($r[0]["calendarobject_id"]);
+
+				$vObject   = dav_get_current_user_calendarobject($server, $cs, $obj_uri["uri"], DAV_ACL_WRITE);
+				$component = dav_get_eventComponent($vObject);
+
+				if (!$component) {
+					echo wdcal_jsonp_encode(array('IsSuccess' => false,
+												  'Msg'       => t('No access')));
+					killme();
+				}
+
+				if (isset($_REQUEST["allday"])) $type = Sabre_VObject_Property_DateTime::DATE;
+				else $type = Sabre_VObject_Property_DateTime::LOCALTZ;
+
+				$datetime_start = new Sabre_VObject_Property_DateTime("DTSTART");
+				$datetime_start->setDateTime(new DateTime(date("Y-m-d H:i:s", IntVal($_REQUEST["CalendarStartTime"]))), $type);
+				$datetime_end = new Sabre_VObject_Property_DateTime("DTEND");
+				$datetime_end->setDateTime(new DateTime(date("Y-m-d H:i:s", IntVal($_REQUEST["CalendarEndTime"]))), $type);
+
+				$component->__unset("DTSTART");
+				$component->__unset("DTEND");
+				$component->add($datetime_start);
+				$component->add($datetime_end);
+
+				$data = $vObject->serialize();
+				/** @var Sabre_CalDAV_CalendarObject $child  */
+				$child = $cs->getChild($obj_uri["uri"]);
+				$child->put($data);
+
+				$ret = array(
+					'IsSuccess' => true,
+					'Msg'       => 'Succefully',
+				);
+			} catch (Exception $e) {
+				echo wdcal_jsonp_encode(array('IsSuccess' => false,
+											  'Msg'       => t('No access')));
+				killme();
+			}
+			break;
+		case "remove":
+			$r = q("SELECT `calendarobject_id`, `calendar_id` FROM %s%sjqcalendar WHERE `id`=%d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($_REQUEST["jq_id"]));
+			if (count($r) != 1) {
+				echo wdcal_jsonp_encode(array('IsSuccess' => false,
+											  'Msg'       => t('No access')));
+				killme();
+			}
+			try {
+				$cs      = dav_get_current_user_calendar_by_id($server, $r[0]["calendar_id"], DAV_ACL_WRITE);
+				$obj_uri = Sabre_CalDAV_Backend_Common::loadCalendarobjectById($r[0]["calendarobject_id"]);
+				$child   = $cs->getChild($obj_uri["uri"]);
+				$child->delete();
+
+				$ret = array(
+					'IsSuccess' => true,
+					'Msg'       => 'Succefully',
+				);
+			} catch (Exception $e) {
+				echo wdcal_jsonp_encode(array('IsSuccess' => false,
+											  'Msg'       => t('No access')));
+				killme();
+			}
+
+			break;
+	}
+	echo wdcal_jsonp_encode($ret);
+	killme();
+}
+

dav/common/wdcal_configuration.php

@@ -40,6 +40,13 @@ abstract class wdcal_local
 		return $format;
 	}
 
+	/**
+	 * @static
+	 * @abstract
+	 * @return string
+	 */
+	abstract static function getLanguageCode();
+
 	/**
 	 * @abstract
 	 * @static
@@ -77,6 +84,13 @@ abstract class wdcal_local
 	 */
 	abstract function date_timestamp2local($ts);
 
+	/**
+	 * @abstract
+	 * @param int $ts
+	 * @return string
+	 */
+	abstract function date_timestamp2localDate($ts);
+
 	/**
 	 * @abstract
 	 * @return int
@@ -119,6 +133,14 @@ abstract class wdcal_local
 
 class wdcal_local_us extends wdcal_local {
 
+	/**
+	 * @static
+	 * @return string
+	 */
+	static function getLanguageCode() {
+		return "en";
+	}
+
 	/**
 	 * @return string
 	 */
@@ -152,6 +174,14 @@ class wdcal_local_us extends wdcal_local {
 		return date("m/d/Y H:i", $ts);
 	}
 
+	/**
+	 * @param int $ts
+	 * @return string
+	 */
+	function date_timestamp2localDate($ts) {
+		return date("l, F jS Y", $ts);
+	}
+
 	/**
 	 * @return int
 	 */
@@ -198,6 +228,14 @@ class wdcal_local_us extends wdcal_local {
 
 class wdcal_local_de extends  wdcal_local {
 
+	/**
+	 * @static
+	 * @return string
+	 */
+	static function getLanguageCode() {
+		return "de";
+	}
+
 	/**
 	 * @return string
 	 */
@@ -231,6 +269,14 @@ class wdcal_local_de extends  wdcal_local {
 		return date("d.m.Y H:i", $ts);
 	}
 
+	/**
+	 * @param int $ts
+	 * @return string
+	 */
+	function date_timestamp2localDate($ts) {
+		return date("l, j. F Y", $ts);
+	}
+
 	/**
 	 * @return int
 	 */

dav/common/wdcal_edit.inc.php

@@ -0,0 +1,510 @@
+<?php
+
+/**
+ * @param wdcal_local $localization
+ * @param string $baseurl
+ * @param int $uid
+ * @param int $calendar_id
+ * @param int $uri
+ * @param string $recurr_uri
+ * @return string
+ */
+function wdcal_getEditPage_str(&$localization, $baseurl, $uid, $calendar_id, $uri, $recurr_uri = "")
+{
+	$server = dav_create_server(true, true, false);
+
+	if ($uri > 0) {
+		$calendar = dav_get_current_user_calendar_by_id($server, $calendar_id, DAV_ACL_WRITE);
+		if (!$calendar) {
+			$calendar = dav_get_current_user_calendar_by_id($server, $calendar_id, DAV_ACL_READ);
+			$calendars = array();
+		} else {
+			$calendars = dav_get_current_user_calendars($server, DAV_ACL_WRITE);
+		}
+
+		if ($calendar == null) return "Calendar not found";
+
+		$obj_uri = Sabre_CalDAV_Backend_Common::loadCalendarobjectById($uri);
+
+		$vObject = dav_get_current_user_calendarobject($server, $calendar, $obj_uri["uri"], DAV_ACL_WRITE);
+		$component = dav_get_eventComponent($vObject);
+
+		if ($component == null) return t('Could not open component for editing');
+
+		/** @var Sabre_VObject_Property_DateTime $dtstart  */
+		$dtstart = $component->__get("DTSTART");
+		$event = array(
+			"id" => IntVal($uri),
+			"Summary" => ($component->__get("SUMMARY") ? $component->__get("SUMMARY")->value : null),
+			"StartTime"     => $dtstart->getDateTime()->getTimeStamp(),
+			"EndTime"     => Sabre_CalDAV_Backend_Common::getDtEndTimeStamp($component),
+			"IsAllDayEvent" => (strlen($dtstart->value) == 8),
+			"Description" => ($component->__get("DESCRIPTION") ? $component->__get("DESCRIPTION")->value : null),
+			"Location" => ($component->__get("LOCATION") ? $component->__get("LOCATION")->value : null),
+			"Color" => ($component->__get("X-ANIMEXX-COLOR") ? $component->__get("X-ANIMEXX-COLOR")->value : null),
+		);
+
+		$exdates = $component->select("EXDATE");
+		$recurrentce_exdates = array();
+		/** @var Sabre_VObject_Property_MultiDateTime $x */
+		foreach ($exdates as $x) {
+			/** @var DateTime $y */
+			$z = $x->getDateTimes();
+			foreach ($z as $y) $recurrentce_exdates[] = $y->getTimeStamp();
+		}
+
+		if ($component->select("RRULE")) $recurrence = new Sabre_VObject_RecurrenceIterator($vObject, (string)$component->__get("UID"));
+		else $recurrence = null;
+
+	} elseif (isset($_REQUEST["start"]) && $_REQUEST["start"] > 0) {
+		$calendars = dav_get_current_user_calendars($server, DAV_ACL_WRITE);
+		$calendar = dav_get_current_user_calendar_by_id($server, $calendar_id, DAV_ACL_WRITE);
+
+		$event = array(
+			"id"            => 0,
+			"Summary"       => $_REQUEST["title"],
+			"StartTime"     => InTVal($_REQUEST["start"]),
+			"EndTime"       => IntVal($_REQUEST["end"]),
+			"IsAllDayEvent" => $_REQUEST["isallday"],
+			"Description" => "",
+			"Location"    => "",
+			"Color"         => "#5858ff",
+		);
+		if ($_REQUEST["isallday"]) {
+			$notifications = array(array("rel" => "start", "type" => "duration", "period" => "hour", "period_val" => 24));
+		} else {
+			$notifications = array(array("rel" => "start", "type" => "duration", "period" => "hour", "period_val" => 1));
+		}
+		$recurrence = null;
+		$recurrentce_exdates = array();
+	} else {
+		$calendars = dav_get_current_user_calendars($server, DAV_ACL_WRITE);
+		$calendar = dav_get_current_user_calendar_by_id($server, $calendar_id, DAV_ACL_WRITE);
+
+		$event              = array(
+			"id"            => 0,
+			"Summary"       => "",
+			"StartTime"     => time(),
+			"EndTime"       => time() + 3600,
+			"IsAllDayEvent" => "0",
+			"Description"   => "",
+			"Location"    => "",
+			"Color"         => "#5858ff",
+		);
+		$notifications = array(array("rel" => "start", "type" => "duration", "period" => "hour", "period_val" => 1));
+		$recurrence = null;
+		$recurrentce_exdates = array();
+	}
+
+	$postto = $baseurl . "/dav/wdcal/" . ($uri == 0 ? "new/" : $calendar_id . "/" . $uri . "/edit/");
+
+	$out = "<a href='" . $baseurl . "/dav/wdcal/'>" . t("Go back to the calendar") . "</a><br><br>";
+	$out .= "<form method='POST' action='$postto'>
+		<input type='hidden' name='form_security_token' value='" . get_form_security_token('caledit') . "'>\n";
+
+	$out .= "<h2>" .t("Event data") . "</h2>";
+
+	$out .= "<label for='calendar'>" . t("Calendar") . ":</label><select name='calendar' size='1'>";
+	foreach ($calendars as $cal) {
+		$prop = $cal->getProperties(array("id", DAV_DISPLAYNAME));
+		$out .= "<option value='" . $prop["id"] . "' ";
+		if ($prop["id"] == $calendar_id) $out .= "selected";
+		$out .= ">" . escape_tags($prop[DAV_DISPLAYNAME]) . "</option>\n";
+	}
+	$out .= "</select><br>\n";
+
+	$out .= "<label class='block' for='cal_summary'>" . t("Subject") . ":</label>
+		<input name='color' id='cal_color' value='" . (strlen($event["Color"]) != 7 ? "#5858ff" : escape_tags($event["Color"])) . "'>
+		<input name='summary' id='cal_summary' value='" . escape_tags($event["Summary"]) . "'><br>\n";
+	$out .= "<label class='block' for='cal_allday'>Is All-Day event:</label><input type='checkbox' name='allday' id='cal_allday' " . ($event["IsAllDayEvent"] ? "checked" : "") . "><br>\n";
+
+	$out .= "<label class='block' for='cal_startdate'>" . t("Starts") . ":</label>";
+	$out .= "<input name='start_date' value='" . $localization->dateformat_datepicker_php($event["StartTime"]) . "' id='cal_start_date'>";
+	$out .= "<input name='start_time' value='" . date("H:i", $event["StartTime"]) . "' id='cal_start_time'>";
+	$out .= "<br>\n";
+
+	$out .= "<label class='block' for='cal_enddate'>" . t("Ends") . ":</label>";
+	$out .= "<input name='end_date' value='" . $localization->dateformat_datepicker_php($event["EndTime"]) . "' id='cal_end_date'>";
+	$out .= "<input name='end_time' value='" . date("H:i", $event["EndTime"]) . "' id='cal_end_time'>";
+	$out .= "<br>\n";
+
+	$out .= "<label class='block' for='cal_location'>" . t("Location") . ":</label><input name='location' id='cal_location' value='" . escape_tags($event["Location"]) . "'><br>\n";
+
+	$out .= "<label class='block' for='event-desc-textarea'>" . t("Description") . ":</label> <textarea id='event-desc-textarea' name='wdcal_desc' style='vertical-align: top; width: 400px; height: 100px;'>" . escape_tags($event["Description"]) . "</textarea>";
+	$out .= "<br style='clear: both;'>";
+
+	$out .= "<h2>" .t("Recurrence") . "</h2>";
+
+	$out .= "<label class='block' for='rec_frequency'>" . t("Frequency") . ":</label> <select id='rec_frequency' name='rec_frequency' size='1'>";
+	$out .= "<option value=''>" . t("None") . "</option>\n";
+	$out .= "<option value='daily' "; if ($recurrence && $recurrence->frequency == "daily") $out .= "selected"; $out .= ">" . t("Daily") . "</option>\n";
+	$out .= "<option value='weekly' "; if ($recurrence && $recurrence->frequency == "weekly") $out .= "selected"; $out .= ">" . t("Weekly") . "</option>\n";
+	$out .= "<option value='monthly' "; if ($recurrence && $recurrence->frequency == "monthly") $out .= "selected"; $out .= ">" . t("Monthly") . "</option>\n";
+	$out .= "<option value='yearly' "; if ($recurrence && $recurrence->frequency == "yearly") $out .= "selected"; $out .= ">" . t("Yearly") . "</option>\n";
+	$out .="</select><br>\n";
+	$out .= "<div id='rec_details'>";
+
+	$select = "<select id='rec_interval' name='rec_interval' size='1'>";
+	for ($i = 1; $i < 50; $i++) {
+		$select .= "<option value='$i' ";
+		if ($recurrence && $i == $recurrence->interval) $select .= "selected";
+		$select .= ">$i</option>\n";
+	}
+	$select .= "</select>";
+	$time  = "<span class='rec_daily'>" . t("days") . "</span>";
+	$time .= "<span class='rec_weekly'>" . t("weeks") . "</span>";
+	$time .= "<span class='rec_monthly'>" . t("months") . "</span>";
+	$time .= "<span class='rec_yearly'>" . t("years") . "</span>";
+	$out .= "<label class='block' for='rev_interval'>" . t("Interval") . ":</label> " . str_replace(array("%select%", "%time%"), array($select, $time), t("All %select% %time%")) . "<br>";
+
+
+	$out .= "<div class='rec_daily'>";
+	$out .= "<label class='block'>" . t("Days") . ":</label>";
+	if ($recurrence && $recurrence->byDay) {
+		$byday = $recurrence->byDay;
+	} else {
+		$byday = array("MO", "TU", "WE", "TH", "FR", "SA", "SU");
+	}
+	if ($localization->getFirstDayOfWeek() == 0) {
+		$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='SU' "; if (in_array("SU", $byday)) $out .= "checked"; $out .= ">" . t("Sunday") . "</label> &nbsp; ";
+	}
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='MO' "; if (in_array("MO", $byday)) $out .= "checked"; $out .= ">" . t("Monday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='TU' "; if (in_array("TU", $byday)) $out .= "checked"; $out .= ">" . t("Tuesday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='WE' "; if (in_array("WE", $byday)) $out .= "checked"; $out .= ">" . t("Wednesday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='TH' "; if (in_array("TH", $byday)) $out .= "checked"; $out .= ">" . t("Thursday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='FR' "; if (in_array("FR", $byday)) $out .= "checked"; $out .= ">" . t("Friday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='SA' "; if (in_array("SA", $byday)) $out .= "checked"; $out .= ">" . t("Saturday") . "</label> &nbsp; ";
+	if ($localization->getFirstDayOfWeek() != 0) {
+		$out .= "<label class='plain'><input class='rec_daily_byday' type='checkbox' name='rec_daily_byday[]' value='SU' "; if (in_array("SU", $byday)) $out .= "checked"; $out .= ">" . t("Sunday") . "</label> &nbsp; ";
+	}
+	$out .= "</div>";
+
+
+	$out .= "<div class='rec_weekly'>";
+	$out .= "<label class='block'>" . t("Days") . ":</label>";
+	if ($recurrence && $recurrence->byDay) {
+		$byday = $recurrence->byDay;
+	} else {
+		$byday = array("MO", "TU", "WE", "TH", "FR", "SA", "SU");
+	}
+	if ($localization->getFirstDayOfWeek() == 0) {
+		$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='SU' "; if (in_array("SU", $byday)) $out .= "checked"; $out .= ">" . t("Sunday") . "</label> &nbsp; ";
+	}
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='MO' "; if (in_array("MO", $byday)) $out .= "checked"; $out .= ">" . t("Monday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='TU' "; if (in_array("TU", $byday)) $out .= "checked"; $out .= ">" . t("Tuesday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='WE' "; if (in_array("WE", $byday)) $out .= "checked"; $out .= ">" . t("Wednesday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='TH' "; if (in_array("TH", $byday)) $out .= "checked"; $out .= ">" . t("Thursday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='FR' "; if (in_array("FR", $byday)) $out .= "checked"; $out .= ">" . t("Friday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='SA' "; if (in_array("SA", $byday)) $out .= "checked"; $out .= ">" . t("Saturday") . "</label> &nbsp; ";
+	if ($localization->getFirstDayOfWeek() != 0) {
+		$out .= "<label class='plain'><input class='rec_weekly_byday' type='checkbox' name='rec_weekly_byday[]' value='SU' "; if (in_array("SU", $byday)) $out .= "checked"; $out .= ">" . t("Sunday") . "</label> &nbsp; ";
+	}
+	$out .= "<br>";
+
+	$out .= "<label class='block'>" . t("First day of week:") . "</label>";
+	if ($recurrence && $recurrence->weekStart != "") $wkst = $recurrence->weekStart;
+	else {
+		if ($localization->getFirstDayOfWeek() == 0) $wkst = "SU";
+		else $wkst = "MO";
+	}
+	$out .= "<label class='plain'><input type='radio' name='rec_weekly_wkst' value='SU' "; if ($wkst == "SU") $out .= "checked"; $out .= ">" . t("Sunday") . "</label> &nbsp; ";
+	$out .= "<label class='plain'><input type='radio' name='rec_weekly_wkst' value='MO' "; if ($wkst == "MO") $out .= "checked"; $out .= ">" . t("Monday") . "</label><br>\n";
+
+	$out .= "</div>";
+
+	$monthly_rule = "bymonthday"; // @TODO
+	$out .= "<div class='rec_monthly'>";
+	$out .= "<label class='block' name='rec_monthly_day'>" . t("Day of month") . ":</label>";
+	$out .= "<select id='rec_monthly_day' name='rec_monthly_day' size='1'>";
+	$out .= "<option value='bymonthday' "; if ($monthly_rule == "bymonthday") $out .= "selected"; $out .= ">" . t("#num#th of each month") . "</option>\n";
+	$out .= "<option value='bymonthday_neg' "; if ($monthly_rule == "bymonthday_neg") $out .= "selected"; $out .= ">" . t("#num#th-last of each month") . "</option>\n";
+	$out .= "<option value='byday' "; if ($monthly_rule == "byday") $out .= "selected"; $out .= ">" . t("#num#th #wkday# of each month") . "</option>\n";
+	$out .= "<option value='byday_neg' "; if ($monthly_rule == "byday_neg") $out .= "selected"; $out .= ">" . t("#num#th-last #wkday# of each month") . "</option>\n";
+	$out .= "</select>";
+	$out .= "</div>\n";
+
+
+	$out .= "<div class='rec_yearly'>";
+	$out .= "<label class='block' name='rec_yearly_day'>" . t("Month") . ":</label> <span class='rec_month_name'>#month#</span><br>\n";
+	$out .= "<label class='block' name='rec_yearly_day'>" . t("Day of month") . ":</label>";
+	$out .= "<select id='rec_yearly_day' name='rec_yearly_day' size='1'>";
+	$out .= "<option value='bymonthday' "; if ($monthly_rule == "bymonthday") $out .= "selected"; $out .= ">" . t("#num#th of each month") . "</option>\n";
+	$out .= "<option value='bymonthday_neg' "; if ($monthly_rule == "bymonthday_neg") $out .= "selected"; $out .= ">" . t("#num#th-last of each month") . "</option>\n";
+	$out .= "<option value='byday' "; if ($monthly_rule == "byday") $out .= "selected"; $out .= ">" . t("#num#th #wkday# of each month") . "</option>\n";
+	$out .= "<option value='byday_neg' "; if ($monthly_rule == "byday_neg") $out .= "selected"; $out .= ">" . t("#num#th-last #wkday# of each month") . "</option>\n";
+	$out .= "</select>";
+	$out .= "</div>\n";
+
+
+	if ($recurrence) {
+		$until = $recurrence->until;
+		$count = $recurrence->count;
+		if (is_a($until, "DateTime")) {
+			/** @var DateTime $until */
+			$rule_type = "date";
+			$rule_until_date = $until->getTimestamp();
+			$rule_until_count = 1;
+		} elseif ($count > 0) {
+			$rule_type = "count";
+			$rule_until_date = time();
+			$rule_until_count = $count;
+		} else {
+			$rule_type = "infinite";
+			$rule_until_date = time();
+			$rule_until_count = 1;
+		}
+	} else {
+		$rule_type = "infinite";
+		$rule_until_date = time();
+		$rule_until_count = 1;
+	}
+	$out .= "<label class='block' for='rec_until_type'>" . t("Repeat until") . ":</label> ";
+	$out .= "<select name='rec_until_type' id='rec_until_type' size='1'>";
+	$out .= "<option value='infinite' "; if ($rule_type == "infinite") $out .= "selected"; $out .= ">" . t("Infinite") . "</option>\n";
+	$out .= "<option value='date' "; if ($rule_type == "date") $out .= "selected"; $out .= ">" . t("Until the following date") . ":</option>\n";
+	$out .= "<option value='count' "; if ($rule_type == "count") $out .= "selected"; $out .= ">" . t("Number of times") . ":</option>\n";
+	$out .= "</select>";
+
+	$out .= "<input name='rec_until_date' value='" . $localization->dateformat_datepicker_php($rule_until_date) . "' id='rec_until_date'>";
+	$out .= "<input name='rec_until_count' value='$rule_until_count' id='rec_until_count'><br>";
+
+	$out .= "<label class='block'>" . t("Exceptions") . ":</label><div class='rec_exceptions'>";
+	$out .= "<div class='rec_exceptions_none' ";
+	if (count($recurrentce_exdates) > 0) $out .= "style='display: none;'";
+	$out .= ">" . t("none") . "</div>";
+	$out .= "<div class='rec_exceptions_holder' ";
+	if (count($recurrentce_exdates) == 0) $out .= "style='display: none;'";
+	$out .= ">";
+
+	foreach ($recurrentce_exdates as $exdate) {
+		$out .= "<div data-timestamp='$exdate' class='except'><input type='hidden' class='rec_exception' name='rec_exceptions[]' value='$exdate'>";
+		$out .= "<a href='#' class='exception_remover'>[remove]</a> ";
+		$out .= $localization->date_timestamp2localDate($exdate);
+		$out .= "</div>\n";
+	}
+	$out .= "</div><div><a href='#' class='exception_adder'>[add]</a></div>";
+	$out .= "</div>\n";
+	$out .= "<br>\n";
+
+	$out .= "</div><br>";
+
+	$out .= "<h2>" .t("Notification") . "</h2>";
+
+	/*
+	$out .= '<input type="checkbox" name="notification" id="notification" ';
+	if ($notification) $out .= "checked";
+	$out .= '> ';
+	$out .= '<span id="notification_detail" style="display: none;">
+			<input name="notification_value" value="' . $notification_value . '" size="3">
+			<select name="notification_type" size="1">
+				<option value="minute" ';
+	if ($notification_type == "minute") $out .= "selected";
+	$out .= '> ' . t('Minutes') . '</option>
+				<option value="hour" ';
+	if ($notification_type == "hour") $out .= "selected";
+	$out .= '> ' . t('Hours') . '</option>
+				<option value="day" ';
+	if ($notification_type == "day") echo "selected";
+	$out .= '> ' . t('Days') . '</option>
+			</select> ' . t('before') . '
+		</span><br><br>';
+	*/
+
+	$out .= "<script>\$(function() {
+		wdcal_edit_init('" . $localization->dateformat_datepicker_js() . "', '${baseurl}/dav/');
+	});</script>";
+
+	$out .= "<input type='submit' name='save' value='Save'></form>";
+
+	return $out;
+}
+
+
+/**
+ * @param Sabre_VObject_Component_VEvent $component
+ * @param wdcal_local $localization
+ */
+function wdcal_set_component_date(&$component, &$localization) {
+	if (isset($_REQUEST["allday"])) {
+		$ts_start = $localization->date_local2timestamp($_REQUEST["start_date"] . " 00:00");
+		$ts_end = $localization->date_local2timestamp($_REQUEST["end_date"] . " 00:00");
+		$type = Sabre_VObject_Property_DateTime::DATE;
+	} else {
+		$ts_start = $localization->date_local2timestamp($_REQUEST["start_date"] . " " . $_REQUEST["start_time"]);
+		$ts_end = $localization->date_local2timestamp($_REQUEST["end_date"] . " " . $_REQUEST["end_time"]);
+		$type = Sabre_VObject_Property_DateTime::LOCALTZ;
+	}
+	$datetime_start = new Sabre_VObject_Property_DateTime("DTSTART");
+	$datetime_start->setDateTime(new DateTime(date("Y-m-d H:i:s", $ts_start)), $type);
+	$datetime_end = new Sabre_VObject_Property_DateTime("DTEND");
+	$datetime_end->setDateTime(new DateTime(date("Y-m-d H:i:s", $ts_end)), $type);
+
+	$component->__unset("DTSTART");
+	$component->__unset("DTEND");
+	$component->add($datetime_start);
+	$component->add($datetime_end);
+}
+
+	/**
+	 * @param Sabre_VObject_Component_VEvent $component
+	 * @param wdcal_local $localization
+	 */
+function wdcal_set_component_recurrence(&$component, &$localization) {
+	$component->__unset("RRULE");
+	$component->__unset("EXRULE");
+	$component->__unset("EXDATE");
+	$component->__unset("RDATE");
+
+	$part_until = "";
+	switch ($_REQUEST["rec_until_type"]) {
+		case "date":
+			$date = $localization->date_local2timestamp($_REQUEST["rec_until_date"]);
+			$part_until = ";UNTIL=" . date("Ymd", $date);
+			$datetime_until = new Sabre_VObject_Property_DateTime("UNTIL");
+			$datetime_until->setDateTime(new DateTime(date("Y-m-d H:i:s", $date)), Sabre_VObject_Property_DateTime::DATE);
+			break;
+		case "count":
+			$part_until = ";COUNT=" . IntVal($_REQUEST["rec_until_count"]);
+			break;
+	}
+
+	switch ($_REQUEST["rec_frequency"]) {
+		case "daily":
+			$part_freq = "FREQ=DAILY";
+			if (isset($_REQUEST["rec_daily_byday"])) {
+				$days = array();
+				foreach ($_REQUEST["rec_daily_byday"] as $x) if (in_array($x, array("MO", "TU", "WE", "TH", "FR", "SA", "SU"))) $days[] = $x;
+				if (count($days) > 0) $part_freq .= ";BYDAY=" . implode(",", $days);
+			}
+			break;
+		case "weekly":
+			$part_freq = "FREQ=WEEKLY";
+			if (isset($_REQUEST["rec_weekly_wkst"]) && in_array($_REQUEST["rec_weekly_wkst"], array("MO", "SU"))) $part_freq .= ";WKST=" . $_REQUEST["rec_weekly_wkst"];
+			if (isset($_REQUEST["rec_weekly_byday"])) {
+				$days = array();
+				foreach ($_REQUEST["rec_weekly_byday"] as $x) if (in_array($x, array("MO", "TU", "WE", "TH", "FR", "SA", "SU"))) $days[] = $x;
+				if (count($days) > 0) $part_freq .= ";BYDAY=" . implode(",", $days);
+			}
+			break;
+		case "monthly":
+			$part_freq = "FREQ=MONTHLY";
+			break;
+		case "FREQ=yearly":
+			$part_freq = "FREQ=YEARLY";
+			break;
+		default:
+			$part_freq = "";
+	}
+
+	if ($part_freq == "") return;
+
+	if (isset($_REQUEST["rec_interval"])) $part_freq .= ";INTERVAL=" . InTVal($_REQUEST["rec_interval"]);
+
+	if (isset($_REQUEST["rec_exceptions"])) {
+		$arr = array();
+		foreach ($_REQUEST["rec_exceptions"] as $except)  {
+			$arr[] = new DateTime(date("Y-m-d H:i:s", $except));
+		}
+		/** @var Sabre_VObject_Property_MultiDateTime $prop */
+		$prop = Sabre_VObject_Property::create("EXDATE");
+		$prop->setDateTimes($arr);
+		$component->add($prop);
+	}
+
+	$rrule = $part_freq . $part_until;
+	$component->add(new Sabre_VObject_Property("RRULE", $rrule));
+
+}
+
+
+
+/**
+ * @param string $uri
+ * @param string $recurr_uri
+ * @param int $uid
+ * @param string $timezone
+ * @param string $goaway_url
+ * @return array
+ */
+function wdcal_postEditPage($uri, $recurr_uri = "", $uid = 0, $timezone = "", $goaway_url = "")
+{
+	$uid = IntVal($uid);
+	$localization = wdcal_local::getInstanceByUser($uid);
+
+	$server = dav_create_server(true, true, false);
+
+	if ($uri > 0) {
+		$calendar = dav_get_current_user_calendar_by_id($server, $_REQUEST["calendar"], DAV_ACL_READ);
+		$obj_uri = Sabre_CalDAV_Backend_Common::loadCalendarobjectById($uri);
+		$obj_uri = $obj_uri["uri"];
+
+		$vObject = dav_get_current_user_calendarobject($server, $calendar, $obj_uri, DAV_ACL_WRITE);
+		$component = dav_get_eventComponent($vObject);
+
+		if ($component == null) return array("ok" => false, "msg" => t('Could not open component for editing'));
+	} else {
+		$calendar = dav_get_current_user_calendar_by_id($server, $_REQUEST["calendar"], DAV_ACL_WRITE);
+		$vObject = dav_create_empty_vevent();
+		$component = dav_get_eventComponent($vObject);
+		$obj_uri = $component->__get("UID");
+	}
+
+	wdcal_set_component_date($component, $localization);
+	wdcal_set_component_recurrence($component, $localization);
+
+	$component->__unset("LOCATION");
+	$component->__unset("SUMMARY");
+	$component->__unset("DESCRIPTION");
+	$component->__unset("X-ANIMEXXCOLOR");
+	$component->add("SUMMARY", icalendar_sanitize_string(dav_compat_parse_text_serverside("summary")));
+	$component->add("LOCATION", icalendar_sanitize_string(dav_compat_parse_text_serverside("location")));
+	$component->add("DESCRIPTION", icalendar_sanitize_string(dav_compat_parse_text_serverside("wdcal_desc")));
+	$component->add("X-ANIMEXX-COLOR", $_REQUEST["color"]);
+
+	$data = $vObject->serialize();
+
+	if ($uri == 0) {
+		$calendar->createFile($obj_uri . ".ics", $data);
+	} else {
+		$obj = $calendar->getChild($obj_uri);
+		$obj->put($data);
+	}
+	return array("ok" => false, "msg" => t("Saved"));
+}
+
+
+/**
+ * @return string
+ */
+function wdcal_getEditPage_exception_selector() {
+	header("Content-type: application/json");
+
+	$a            = get_app();
+	$localization = wdcal_local::getInstanceByUser($a->user["uid"]);
+
+	$vObject = wdcal_create_empty_vevent();
+
+	foreach($vObject->getComponents() as $component) {
+		if ($component->name!=='VTIMEZONE') break;
+	}
+	/** @var Sabre_VObject_Component_VEvent $component */
+	wdcal_set_component_date($component, $localization);
+	wdcal_set_component_recurrence($component, $localization);
+
+
+	$it = new Sabre_VObject_RecurrenceIterator($vObject, (string)$component->__get("UID"));
+	$max_ts = mktime(0, 0, 0, 1, 1, CALDAV_MAX_YEAR + 1);
+	$last_start = 0;
+
+	$o = "<ul>";
+
+	$i = 0;
+	while($it->valid() && $last_start < $max_ts && $i++ < 1000) {
+		$last_start = $it->getDtStart()->getTimestamp();
+		$o .= "<li><a href='#' class='exception_selector_link' data-timestamp='$last_start'>" . $localization->date_timestamp2localDate($last_start) . "</a></li>\n";
+		$it->next();
+	}
+	$o .= "</ul>\n";
+
+	return $o;
+}

dav/database-init.inc.php

@@ -1,10 +1,80 @@
 <?php
 
 
+/**
+ * @param int $from_version
+ * @return array|string[]
+ */
+function dav_get_update_statements($from_version)
+{
+	$stms = array();
+
+	if ($from_version <= 0) {
+		$stms[] = "ALTER TABLE `dav_calendars` ADD `uri` VARCHAR( 50 ) NULL DEFAULT NULL AFTER `description` , ADD `has_vevent` TINYINT NOT NULL DEFAULT '1' AFTER `uri` , ADD `has_vtodo` TINYINT NOT NULL DEFAULT '1' AFTER `has_vevent`";
+
+		$stms[] = "UPDATE `dav_calendars` SET `uri` = 'private' WHERE `namespace` = 1";
+		$stms[] = "UPDATE `dav_calendars` SET `uri` = 'friendica-mine' WHERE `namespace` = 2 AND `namespace_id` = 1";
+		$stms[] = "UPDATE `dav_calendars` SET `uri` = 'friendica-contacts' WHERE `namespace` = 2 AND `namespace_id` = 2";
+		$stms[] = "ALTER TABLE `dav_calendars` DROP PRIMARY KEY ";
+		$stms[] = "ALTER TABLE `dav_calendars` ADD `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY FIRST ";
+
+		$stms[] = "ALTER TABLE `dav_calendarobjects` ADD `calendar_id` INT NOT NULL AFTER `id` ";
+		$stms[] = "UPDATE `dav_calendarobjects` a JOIN `dav_calendars` b ON a.`namespace` = b.`namespace` AND a.`namespace_id` = b.`namespace_id` SET a.`calendar_id` = b.`id`";
+		$stms[] = "ALTER TABLE `dav_calendarobjects` DROP `namespace` , DROP `namespace_id` ;";
+		$stms[] = "ALTER TABLE `dav_calendarobjects` ADD INDEX ( `calendar_id` ) ";
+		$stms[] = "ALTER TABLE `dav_calendarobjects` ADD `componentType` ENUM( 'VEVENT', 'VTODO' ) NOT NULL DEFAULT 'VEVENT' AFTER `calendardata` ,
+		 	ADD `firstOccurence` TIMESTAMP NOT NULL AFTER `lastmodified` ,
+			ADD `lastOccurence` TIMESTAMP NOT NULL AFTER `firstOccurence`";
+
+		$stms[] = "DROP TABLE `dav_jqcalendar`";
+		$stms[] = "CREATE TABLE IF NOT EXISTS `dav_jqcalendar` (
+  			`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
+  			`ical_recurr_uri` varchar(100) DEFAULT NULL,
+  			`calendar_id` int(10) unsigned NOT NULL,
+  			`calendarobject_id` int(10) unsigned NOT NULL,
+  			`Subject` varchar(1000) NOT NULL,
+  			`StartTime` timestamp NULL DEFAULT NULL,
+  			`EndTime` timestamp NULL DEFAULT NULL,
+  			`IsEditable` tinyint(3) unsigned NOT NULL,
+  			`IsAllDayEvent` tinyint(4) NOT NULL,
+  			`IsRecurring` tinyint(4) NOT NULL,
+  			`Color` CHAR(6) DEFAULT NULL,
+  			PRIMARY KEY (`id`),
+  			KEY `calendarByStart` (`calendar_id`,`StartTime`),
+  			KEY `calendarobject_id` (`calendarobject_id`,`ical_recurr_uri`)
+			) DEFAULT CHARSET=utf8 ";
+
+
+		$stms[] = "ALTER TABLE `dav_notifications` ADD `calendar_id` INT NOT NULL AFTER `ical_recurr_uri` ";
+		$stms[] = "ALTER TABLE `dav_notifications` DROP INDEX `ical_uri` , ADD INDEX `ical_uri` ( `calendar_id` , `ical_uri` , `ical_recurr_uri` ) ";
+		$stms[] = "TRUNCATE TABLE `dav_notifications`";
+		$stms[] = "ALTER TABLE `dav_notifications` DROP `namespace` , DROP `namespace_id`";
+
+		$stms[] = "TRUNCATE TABLE `dav_cal_virtual_object_cache`";
+		$stme[] = "ALTER TABLE `dav_cal_virtual_object_cache` ADD `calendar_id` INT UNSIGNED NOT NULL AFTER `id` ";
+		$stms[] = "ALTER TABLE `dav_cal_virtual_object_cache` DROP INDEX `ref_type` , ADD INDEX `ref_type` ( `calendar_id` , `data_end` )  ";
+		$stms[] = "ALTER TABLE `dav_cal_virtual_object_cache` DROP `uid`, DROP `namespace` , DROP `namespace_id` ";
+
+		$stms[] = "CREATE TABLE `friendica`.`dav_cal_virtual_object_sync` (
+			`calendar_id` INT UNSIGNED NOT NULL ,
+			`date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ,
+			PRIMARY KEY ( `calendar_id` )
+			) ENGINE=MyISAM DEFAULT CHARSET=utf8";
+
+		$stms[] = "DROP TABLE `dav_cache_synchronized` ";
+
+		$stms[] = "UPDATE `dav_calendars` SET `namespace` = 1, `namespace_id` = `uid`"; // last
+		$stms[] = "ALTER TABLE `dav_calendars` DROP `uid`";
+	}
+
+	return $stms;
+}
+
 /**
  * @return array
  */
-function dav_get_create_statements() {
+function dav_get_create_statements()
+{
 	$arr = array();
 
 	$arr[] = "CREATE TABLE IF NOT EXISTS `dav_addressbooks_community` (
@@ -69,6 +139,9 @@ function dav_get_create_statements() {
   `displayname` varchar(200) NOT NULL,
   `timezone` text NOT NULL,
   `description` varchar(500) NOT NULL,
+  `uri` varchar(50) DEFAULT NULL,
+  `has_vevent` tinyint(4) NOT NULL DEFAULT '1',
+  `has_vtodo` tinyint(4) NOT NULL DEFAULT '1',
   `ctag` int(10) unsigned NOT NULL,
   PRIMARY KEY (`namespace`,`namespace_id`),
   KEY `uid` (`uid`)
@@ -171,10 +244,11 @@ function dav_get_create_statements() {
 /**
  * @return int
  */
-function dav_check_tables() {
+function dav_check_tables()
+{
 	$dbv = get_config("dav", "db_version");
 	if ($dbv == CALDAV_DB_VERSION) return 0; // Correct
-	if (is_numeric($dbv)) return 1; // Older version (update needed)
+	if (is_numeric($dbv) || $dbv == "CALDAV_DB_VERSION") return 1; // Older version (update needed)
 	return -1; // Not installed
 }
 
@@ -184,7 +258,29 @@ function dav_check_tables() {
  */
 function dav_create_tables()
 {
-	$stms = dav_get_create_statements();
+	$stms   = dav_get_create_statements();
+	$errors = array();
+
+	global $db;
+	foreach ($stms as $st) {
+		$db->q($st);
+		if ($db->error) $errors[] = $db->error;
+	}
+
+	if (count($errors) == 0) set_config("dav", "db_version", CALDAV_DB_VERSION);
+
+	return $errors;
+}
+
+/**
+ * @return array
+ */
+function dav_upgrade_tables()
+{
+	$dbv = get_config("dav", "db_version");
+	if ($dbv == "CALDAV_DB_VERSION") $ver = 0;
+	else $ver = IntVal($dbv);
+	$stms   = dav_get_update_statements($ver);
 	$errors = array();
 
 	global $db;

dav/dav.php

@@ -2,7 +2,7 @@
 /**
  * Name: Calendar with CalDAV Support
  * Description: A web-based calendar system with CalDAV-support. Also brings your Friendica-Contacts to your CardDAV-capable mobile phone. Requires PHP >= 5.3.
- * Version: 0.1.1
+ * Version: 0.2.0
  * Author: Tobias Hößl <https://github.com/CatoTH/>
  */
 

dav/dav_caldav_backend_virtual_friendica.inc.php

@@ -0,0 +1,245 @@
+<?php
+
+class Sabre_CalDAV_Backend_Friendica extends Sabre_CalDAV_Backend_Virtual
+{
+
+	/**
+	 * @var null|Sabre_CalDAV_Backend_Friendica
+	 */
+	private static $instance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_CalDAV_Backend_Friendica
+	 */
+	public static function getInstance()
+	{
+		if (self::$instance == null) {
+			self::$instance = new Sabre_CalDAV_Backend_Friendica();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * @return int
+	 */
+	public function getNamespace()
+	{
+		return CALDAV_NAMESPACE_PRIVATE;
+	}
+
+
+	/**
+	 * @static
+	 * @param int $calendarId
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return void
+	 */
+	protected static function createCache_internal($calendarId)
+	{
+		$calendar = Sabre_CalDAV_Backend_Common::loadCalendarById($calendarId);
+
+		switch ($calendar["uri"]) {
+			case CALDAV_FRIENDICA_MINE:
+				$sql_where = " AND cid = 0";
+				break;
+			case CALDAV_FRIENDICA_CONTACTS:
+				$sql_where = " AND cid > 0";
+				break;
+			default:
+				throw new Sabre_DAV_Exception_NotFound();
+		}
+
+		$r = q("SELECT * FROM `event` WHERE `uid` = %d " . $sql_where . " ORDER BY `start`", IntVal($calendar["namespace_id"]));
+
+		foreach ($r as $row) {
+			$uid       = $calendar["uri"] . "-" . $row["id"];
+			$vevent    = dav_create_empty_vevent($uid);
+			$component = dav_get_eventComponent($vevent);
+
+			if ($row["adjust"]) {
+				$start  = datetime_convert('UTC', date_default_timezone_get(), $row["start"]);
+				$finish = datetime_convert('UTC', date_default_timezone_get(), $row["finish"]);
+			} else {
+				$start  = $row["start"];
+				$finish = $row["finish"];
+			}
+
+			$summary = ($row["summary"] != "" ? $row["summary"] : $row["desc"]);
+			$desc    = ($row["summary"] != "" ? $row["desc"] : "");
+			$component->add("SUMMARY", icalendar_sanitize_string($summary));
+			$component->add("LOCATION", icalendar_sanitize_string($row["location"]));
+			$component->add("DESCRIPTION", icalendar_sanitize_string($desc));
+
+			$ts_start = wdcal_mySql2PhpTime($start);
+			$ts_end   = wdcal_mySql2PhpTime($start);
+
+			$allday = (strpos($start, "00:00:00") !== false && strpos($finish, "00:00:00") !== false);
+			$type           = ($allday ? Sabre_VObject_Property_DateTime::DATE : Sabre_VObject_Property_DateTime::LOCALTZ);
+
+			$datetime_start = new Sabre_VObject_Property_DateTime("DTSTART");
+			$datetime_start->setDateTime(new DateTime(date("Y-m-d H:i:s", $ts_start)), $type);
+			$datetime_end = new Sabre_VObject_Property_DateTime("DTEND");
+			$datetime_end->setDateTime(new DateTime(date("Y-m-d H:i:s", $ts_end)), $type);
+
+			$component->add($datetime_start);
+			$component->add($datetime_end);
+
+			$data = $vevent->serialize();
+
+			q("INSERT INTO %s%scal_virtual_object_cache (`calendar_id`, `data_uri`, `data_summary`, `data_location`, `data_start`, `data_end`, `data_allday`, `data_type`,
+				`calendardata`, `size`, `etag`) VALUES (%d, '%s', '%s', '%s', '%s', '%s', %d, '%s', '%s', %d, '%s')",
+				CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $calendarId, dbesc($uid), dbesc($summary), dbesc($row["location"]), dbesc($row["start"]), dbesc($row["finish"]),
+					($allday ? 1 : 0), dbesc(($row["type"] == "birthday" ? "birthday" : "")), dbesc($data), strlen($data), md5($data));
+
+		}
+
+	}
+
+
+	/**
+	 * @param array $row
+	 * @param array $calendar
+	 * @param string $base_path
+	 * @return array
+	 */
+	private function jqcal2wdcal($row, $calendar, $base_path)
+	{
+		if ($row["adjust"]) {
+			$start  = datetime_convert('UTC', date_default_timezone_get(), $row["start"]);
+			$finish = datetime_convert('UTC', date_default_timezone_get(), $row["finish"]);
+		} else {
+			$start  = $row["start"];
+			$finish = $row["finish"];
+		}
+
+		$allday = (strpos($start, "00:00:00") !== false && strpos($finish, "00:00:00") !== false);
+
+		$summary = (($row["summary"]) ? $row["summary"] : substr(preg_replace("/\[[^\]]*\]/", "", $row["desc"]), 0, 100));
+
+		return array(
+			"jq_id"             => $row["id"],
+			"ev_id"             => $row["id"],
+			"summary"           => escape_tags($summary),
+			"start"             => wdcal_mySql2PhpTime($start),
+			"end"               => wdcal_mySql2PhpTime($finish),
+			"is_allday"         => ($allday ? 1 : 0),
+			"is_moredays"       => (substr($start, 0, 10) != substr($finish, 0, 10)),
+			"is_recurring"      => ($row["type"] == "birthday"),
+			"color"             => "#f8f8ff",
+			"is_editable"       => 0,
+			"is_editable_quick" => 0,
+			"location"          => $row["location"],
+			"attendees"         => '',
+			"has_notification"  => 0,
+			"url_detail"        => $base_path . "/events/event/" . $row["id"],
+			"url_edit"          => "",
+			"special_type"      => ($row["type"] == "birthday" ? "birthday" : ""),
+		);
+	}
+
+
+	/**
+	 * @param int $calendarId
+	 * @param string $date_from
+	 * @param string $date_to
+	 * @param string $base_path
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return array
+	 */
+	public function listItemsByRange($calendarId, $date_from, $date_to, $base_path)
+	{
+		$calendar = Sabre_CalDAV_Backend_Common::loadCalendarById($calendarId);
+
+		if ($calendar["namespace"] != CALDAV_NAMESPACE_PRIVATE) throw new Sabre_DAV_Exception_NotFound();
+
+		switch ($calendar["uri"]) {
+			case CALDAV_FRIENDICA_MINE:
+				$sql_where = " AND cid = 0";
+				break;
+			case CALDAV_FRIENDICA_CONTACTS:
+				$sql_where = " AND cid > 0";
+				break;
+			default:
+				throw new Sabre_DAV_Exception_NotFound();
+		}
+
+		if ($date_from != "") {
+			if (is_numeric($date_from)) $sql_where .= " AND `finish` >= '" . date("Y-m-d H:i:s", $date_from) . "'";
+			else $sql_where .= " AND `finish` >= '" . dbesc($date_from) . "'";
+		}
+		if ($date_to != "") {
+			if (is_numeric($date_to)) $sql_where .= " AND `start` <= '" . date("Y-m-d H:i:s", $date_to) . "'";
+			else $sql_where .= " AND `start` <= '" . dbesc($date_to) . "'";
+		}
+		$ret = array();
+
+		$r = q("SELECT * FROM `event` WHERE `uid` = %d " . $sql_where . " ORDER BY `start`", IntVal($calendar["namespace_id"]));
+
+		$a = get_app();
+		foreach ($r as $row) {
+			$r                = $this->jqcal2wdcal($row, $calendar, $a->get_baseurl());
+			$r["calendar_id"] = $calendar["id"];
+			$ret[]            = $r;
+		}
+
+		return $ret;
+	}
+
+
+	/**
+	 * Returns a list of calendars for a principal.
+	 *
+	 * Every project is an array with the following keys:
+	 *  * id, a unique id that will be used by other functions to modify the
+	 *    calendar. This can be the same as the uri or a database key.
+	 *  * uri, which the basename of the uri with which the calendar is
+	 *    accessed.
+	 *  * principaluri. The owner of the calendar. Almost always the same as
+	 *    principalUri passed to this method.
+	 *
+	 * Furthermore it can contain webdav properties in clark notation. A very
+	 * common one is '{DAV:}displayname'.
+	 *
+	 * @param string $principalUri
+	 * @return array
+	 */
+	public function getCalendarsForUser($principalUri)
+	{
+		$n = dav_compat_principal2namespace($principalUri);
+		if ($n["namespace"] != $this->getNamespace()) return array();
+
+		$cals = q("SELECT * FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $this->getNamespace(), IntVal($n["namespace_id"]));
+		$ret  = array();
+		foreach ($cals as $cal) {
+			if (!in_array($cal["uri"], $GLOBALS["CALDAV_PRIVATE_SYSTEM_CALENDARS"])) continue;
+
+			$dat = array(
+				"id"                                                      => $cal["id"],
+				"uri"                                                     => $cal["uri"],
+				"principaluri"                                            => $principalUri,
+				'{' . Sabre_CalDAV_Plugin::NS_CALENDARSERVER . '}getctag' => $cal['ctag'] ? $cal['ctag'] : '0',
+				"calendar_class"                                          => "Sabre_CalDAV_Calendar_Virtual",
+			);
+			foreach ($this->propertyMap as $key=> $field) $dat[$key] = $cal[$field];
+
+			$ret[] = $dat;
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * @param int $calendar_id
+	 * @param int $calendarobject_id
+	 * @return string
+	 */
+	function getItemDetailRedirect($calendar_id, $calendarobject_id)
+	{
+		$a    = get_app();
+		$item = q("SELECT `id` FROM `item` WHERE `event-id` = %d AND `uid` = %d AND deleted = 0", IntVal($calendarobject_id), $a->user["uid"]);
+		if (count($item) == 0) return "/events/";
+		return "/display/" . $a->user["nickname"] . "/" . IntVal($item[0]["id"]);
+
+	}
+}

dav/dav_carddav_backend_virtual_friendica.inc.php

@@ -0,0 +1,336 @@
+<?php
+
+class Sabre_CardDAV_Backend_FriendicaCommunity extends Sabre_CardDAV_Backend_Abstract
+{
+
+	/**
+	 * @var null|Sabre_CardDAV_Backend_FriendicaCommunity
+	 */
+	private static $instance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_CardDAV_Backend_FriendicaCommunity
+	 */
+	public static function getInstance() {
+		if (self::$instance == null) {
+			self::$instance = new Sabre_CardDAV_Backend_FriendicaCommunity();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * Sets up the object
+	 */
+	public function __construct()
+	{
+
+	}
+
+	/**
+	 * Returns the list of addressbooks for a specific user.
+	 *
+	 * @param string $principalUri
+	 * @return array
+	 */
+	public function getAddressBooksForUser($principalUri)
+	{
+		$uid = dav_compat_principal2uid($principalUri);
+
+		$addressBooks = array();
+
+		$books = q("SELECT ctag FROM %s%saddressbooks_community WHERE uid = %d", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($uid));
+		if (count($books) == 0) {
+			q("INSERT INTO %s%saddressbooks_community (uid, ctag) VALUES (%d, 1)", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($uid));
+			$ctag = 1;
+		} else {
+			$ctag = $books[0]["ctag"];
+		}
+		$addressBooks[] = array(
+			'id'                                                                => CARDDAV_NAMESPACE_COMMUNITYCONTACTS . "-" . $uid,
+			'uri'                                                               => "friendica",
+			'principaluri'                                                      => $principalUri,
+			'{DAV:}displayname'                                                 => t("Friendica-Contacts"),
+			'{' . Sabre_CardDAV_Plugin::NS_CARDDAV . '}addressbook-description' => t("Your Friendica-Contacts"),
+			'{http://calendarserver.org/ns/}getctag'                            => $ctag,
+			'{' . Sabre_CardDAV_Plugin::NS_CARDDAV . '}supported-address-data'  =>
+			new Sabre_CardDAV_Property_SupportedAddressData(),
+		);
+
+		return $addressBooks;
+
+	}
+
+
+	/**
+	 * Updates an addressbook's properties
+	 *
+	 * See Sabre_DAV_IProperties for a description of the mutations array, as
+	 * well as the return value.
+	 *
+	 * @param string $addressBookId
+	 * @param array $mutations
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @see Sabre_DAV_IProperties::updateProperties
+	 * @return bool|array
+	 */
+	public function updateAddressBook($addressBookId, array $mutations)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Creates a new address book
+	 *
+	 * @param string $principalUri
+	 * @param string $url Just the 'basename' of the url.
+	 * @param array $properties
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return void
+	 */
+	public function createAddressBook($principalUri, $url, array $properties)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Deletes an entire addressbook and all its contents
+	 *
+	 * @param int $addressBookId
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return void
+	 */
+	public function deleteAddressBook($addressBookId)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+
+	/**
+	 * @param array $contact
+	 * @return array
+	 */
+	private function dav_contactarr2vcardsource($contact)
+	{
+		$name        = explode(" ", $contact["name"]);
+		$first_name  = $last_name = "";
+		$middle_name = array();
+		$num         = count($name);
+		for ($i = 0; $i < $num && $first_name == ""; $i++) if ($name[$i] != "") {
+			$first_name = $name[$i];
+			unset($name[$i]);
+		}
+		for ($i = $num - 1; $i >= 0 && $last_name == ""; $i--) if (isset($name[$i]) && $name[$i] != "") {
+			$last_name = $name[$i];
+			unset($name[$i]);
+		}
+		foreach ($name as $n) if ($n != "") $middle_name[] = $n;
+		$vcarddata              = new vcard_source_data($first_name, implode(" ", $middle_name), $last_name);
+		$vcarddata->homepages[] = new vcard_source_data_homepage("pref", $contact["url"]);
+		$vcarddata->last_update = ($contact["last-update"] > 0 ? $contact["last-update"] : $contact["created"]);
+
+		$photo = q("SELECT * FROM photo WHERE `contact-id` = %d ORDER BY scale DESC", $contact["id"]); //prefer size 80x80
+		if ($photo && count($photo) > 0) {
+			$photodata             = new vcard_source_data_photo();
+			$photodata->width      = $photo[0]["width"];
+			$photodata->height     = $photo[0]["height"];
+			$photodata->type       = "JPEG";
+			$photodata->binarydata = $photo[0]["data"];
+			$vcarddata->photo      = $photodata;
+		}
+
+		switch ($contact["network"]) {
+			case "face":
+				$vcarddata->socialnetworks[] = new vcard_source_data_socialnetwork("facebook", $contact["notify"], "http://www.facebook.com/" . $contact["notify"]);
+				break;
+			case "dfrn":
+				$vcarddata->socialnetworks[] = new vcard_source_data_socialnetwork("dfrn", $contact["nick"], $contact["url"]);
+				break;
+			case "twitter":
+				$vcarddata->socialnetworks[] = new vcard_source_data_socialnetwork("twitter", $contact["nick"], "http://twitter.com/" . $contact["nick"]); // @TODO Stimmt das?
+				break;
+		}
+
+		$vcard = vcard_source_compile($vcarddata);
+		return array(
+			"id"           => $contact["id"],
+			"carddata"     => $vcard,
+			"uri"          => $contact["id"] . ".vcf",
+			"lastmodified" => wdcal_mySql2PhpTime($vcarddata->last_update),
+			"etag"         => md5($vcard),
+			"size"         => strlen($vcard),
+		);
+
+	}
+
+	/**
+	 * @param int $uid
+	 * @param array|int[] $exclude_ids
+	 * @return array
+	 */
+	private function dav_getCommunityContactsVCards($uid = 0, $exclude_ids = array())
+	{
+		$notin    = (count($exclude_ids) > 0 ? " AND id NOT IN (" . implode(", ", $exclude_ids) . ") " : "");
+		$uid      = IntVal($uid);
+		$contacts = q("SELECT * FROM `contact` WHERE `uid` = %d AND `blocked` = 0 AND `pending` = 0 AND `hidden` = 0 AND `archive` = 0 $notin ORDER BY `name` ASC", $uid);
+
+		$retdata = array();
+		foreach ($contacts as $contact) {
+			$x            = $this->dav_contactarr2vcardsource($contact);
+			$x["contact"] = $contact["id"];
+			$retdata[]    = $x;
+		}
+		return $retdata;
+	}
+
+
+	/**
+	 * Returns all cards for a specific addressbook id.
+	 *
+	 * This method should return the following properties for each card:
+	 *   * carddata - raw vcard data
+	 *   * uri - Some unique url
+	 *   * lastmodified - A unix timestamp
+	 *
+	 * It's recommended to also return the following properties:
+	 *   * etag - A unique etag. This must change every time the card changes.
+	 *   * size - The size of the card in bytes.
+	 *
+	 * If these last two properties are provided, less time will be spent
+	 * calculating them. If they are specified, you can also ommit carddata.
+	 * This may speed up certain requests, especially with large cards.
+	 *
+	 * @param string $addressbookId
+	 * @return array
+	 */
+	public function getCards($addressbookId)
+	{
+		$add = explode("-", $addressbookId);
+
+		$indb           = q('SELECT id, carddata, uri, lastmodified, etag, size, contact, manually_deleted FROM %s%scards WHERE namespace = %d AND namespace_id = %d',
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($add[0]), IntVal($add[1])
+		);
+		$found_contacts = array();
+		$contacts       = array();
+		foreach ($indb as $x) {
+			if ($x["manually_deleted"] == 0) $contacts[] = $x;
+			$found_contacts[] = IntVal($x["contact"]);
+		}
+		$new_found = $this->dav_getCommunityContactsVCards($add[1], $found_contacts);
+		foreach ($new_found as $new) {
+			q("INSERT INTO %s%scards (namespace, namespace_id, contact, carddata, uri, lastmodified, manually_edited, manually_deleted, etag, size)
+					VALUES (%d, %d, %d, '%s', '%s', %d, 0, 0, '%s', %d)", CALDAV_SQL_DB, CALDAV_SQL_PREFIX,
+				IntVal($add[0]), IntVal($add[1]), IntVal($new["contact"]), dbesc($new["carddata"]), dbesc($new["uri"]), time(), md5($new["carddata"]), strlen($new["carddata"])
+			);
+		}
+		return array_merge($contacts, $new_found);
+	}
+
+	/**
+	 * Returns a specfic card.
+	 *
+	 * The same set of properties must be returned as with getCards. The only
+	 * exception is that 'carddata' is absolutely required.
+	 *
+	 * @param mixed $addressBookId
+	 * @param string $cardUri
+	 * @throws Sabre_DAV_Exception_NotFound
+	 * @return array
+	 */
+	public function getCard($addressBookId, $cardUri)
+	{
+		$x = explode("-", $addressBookId);
+		$x = q("SELECT id, carddata, uri, lastmodified, etag, size FROM %s%scards WHERE namespace = %d AND namespace_id = %d AND uri = '%s'",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[0]), IntVal($x[1]), dbesc($cardUri));
+		if (count($x) == 0) throw new Sabre_DAV_Exception_NotFound();
+		return $x[0];
+	}
+
+	/**
+	 * Creates a new card.
+	 *
+	 * The addressbook id will be passed as the first argument. This is the
+	 * same id as it is returned from the getAddressbooksForUser method.
+	 *
+	 * The cardUri is a base uri, and doesn't include the full path. The
+	 * cardData argument is the vcard body, and is passed as a string.
+	 *
+	 * It is possible to return an ETag from this method. This ETag is for the
+	 * newly created resource, and must be enclosed with double quotes (that
+	 * is, the string itself must contain the double quotes).
+	 *
+	 * You should only return the ETag if you store the carddata as-is. If a
+	 * subsequent GET request on the same card does not have the same body,
+	 * byte-by-byte and you did return an ETag here, clients tend to get
+	 * confused.
+	 *
+	 * If you don't return an ETag, you can just return null.
+	 *
+	 * @param string $addressBookId
+	 * @param string $cardUri
+	 * @param string $cardData
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return string
+	 */
+	public function createCard($addressBookId, $cardUri, $cardData)
+	{
+		throw new Sabre_DAV_Exception_Forbidden();
+	}
+
+	/**
+	 * Updates a card.
+	 *
+	 * The addressbook id will be passed as the first argument. This is the
+	 * same id as it is returned from the getAddressbooksForUser method.
+	 *
+	 * The cardUri is a base uri, and doesn't include the full path. The
+	 * cardData argument is the vcard body, and is passed as a string.
+	 *
+	 * It is possible to return an ETag from this method. This ETag should
+	 * match that of the updated resource, and must be enclosed with double
+	 * quotes (that is: the string itself must contain the actual quotes).
+	 *
+	 * You should only return the ETag if you store the carddata as-is. If a
+	 * subsequent GET request on the same card does not have the same body,
+	 * byte-by-byte and you did return an ETag here, clients tend to get
+	 * confused.
+	 *
+	 * If you don't return an ETag, you can just return null.
+	 *
+	 * @param string $addressBookId
+	 * @param string $cardUri
+	 * @param string $cardData
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return string|null
+	 */
+	public function updateCard($addressBookId, $cardUri, $cardData)
+	{
+		$x = explode("-", $addressBookId);
+
+		$etag = md5($cardData);
+		q("UPDATE %s%scards SET carddata = '%s', lastmodified = %d, etag = '%s', size = %d, manually_edited = 1 WHERE uri = '%s' AND namespace = %d AND namespace_id =%d",
+			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, dbesc($cardData), time(), $etag, strlen($cardData), dbesc($cardUri), IntVal($x[10]), IntVal($x[1])
+		);
+		q('UPDATE %s%saddressbooks_community SET ctag = ctag + 1 WHERE uid = %d', CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[1]));
+
+		return '"' . $etag . '"';
+	}
+
+	/**
+	 * Deletes a card
+	 *
+	 * @param string $addressBookId
+	 * @param string $cardUri
+	 * @throws Sabre_DAV_Exception_Forbidden
+	 * @return bool
+	 */
+	public function deleteCard($addressBookId, $cardUri)
+	{
+		$x = explode("-", $addressBookId);
+
+		q("UPDATE %s%scards SET manually_deleted = 1 WHERE namespace = %d AND namespace_id = %d AND uri = '%s'", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[0]), IntVal($x[1]), dbesc($cardUri));
+		q('UPDATE %s%saddressbooks_community SET ctag = ctag + 1 WHERE uid = %d', CALDAV_SQL_DB, CALDAV_SQL_PREFIX, IntVal($x[1]));
+
+		return true;
+	}
+}

dav/dav_friendica_auth.inc.php

@@ -1,16 +1,39 @@
 <?php
 
-class Sabre_DAV_Auth_Backend_Friendica extends Sabre_DAV_Auth_Backend_AbstractBasic {
+class Sabre_DAV_Auth_Backend_Std extends Sabre_DAV_Auth_Backend_AbstractBasic {
 
     public function __construct() {
     }
 
 
-    public function getUsers() {
+	/**
+	 * @var Sabre_DAV_Auth_Backend_Std|null
+	 */
+	private static $intstance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_DAV_Auth_Backend_Std
+	 */
+	public static function &getInstance() {
+		if (is_null(self::$intstance)) {
+			self::$intstance = new Sabre_DAV_Auth_Backend_Std();
+		}
+		return self::$intstance;
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function getUsers() {
         return array($this->currentUser);
     }
-    
-    public function getCurrentUser() {
+
+	/**
+	 * @return null|string
+	 */
+	public function getCurrentUser() {
         return $this->currentUser;
     }
 
@@ -27,6 +50,12 @@ class Sabre_DAV_Auth_Backend_Friendica extends Sabre_DAV_Auth_Backend_AbstractBa
 	 */
 	public function authenticate(Sabre_DAV_Server $server, $realm) {
 
+		$a = get_app();
+		if (isset($a->user["uid"])) {
+			$this->currentUser = strtolower($a->user["nickname"]);
+			return true;
+		}
+
 		$auth = new Sabre_HTTP_BasicAuth();
 		$auth->setHTTPRequest($server->httpRequest);
 		$auth->setHTTPResponse($server->httpResponse);
@@ -47,12 +76,18 @@ class Sabre_DAV_Auth_Backend_Friendica extends Sabre_DAV_Auth_Backend_AbstractBa
 	}
 
 
+	/**
+	 * @param string $username
+	 * @param string $password
+	 * @return bool
+	 */
 	protected function validateUserPass($username, $password) {
-
-		$user = array(
-	            'uri' => "/" . 'principals/users/' . strtolower($username),
+		$encrypted = hash('whirlpool',trim($password));
+		$r = q("SELECT COUNT(*) anz FROM `user` WHERE `nickname` = '%s' AND `password` = '%s' AND `blocked` = 0 AND `account_expired` = 0 AND `verified` = 1 LIMIT 1",
+			dbesc(trim($username)),
+			dbesc($encrypted)
 		);
-		return $user;
+		return ($r[0]["anz"] == 1);
     }
     
 }

dav/dav_friendica_principal.inc.php

@@ -1,7 +1,7 @@
 <?php
 
 
-class Sabre_DAVACL_PrincipalBackend_Friendica implements Sabre_DAVACL_IPrincipalBackend
+class Sabre_DAVACL_PrincipalBackend_Std implements Sabre_DAVACL_IPrincipalBackend
 {
 
 	/**
@@ -24,6 +24,23 @@ class Sabre_DAVACL_PrincipalBackend_Friendica implements Sabre_DAVACL_IPrincipal
 	}
 
 
+	/**
+	 * @var Sabre_DAVACL_IPrincipalBackend|null
+	 */
+	private static $intstance = null;
+
+	/**
+	 * @static
+	 * @return Sabre_DAVACL_IPrincipalBackend
+	 */
+	public static function &getInstance() {
+		if (is_null(self::$intstance)) {
+			$authBackend              = Sabre_DAV_Auth_Backend_Std::getInstance();
+			self::$intstance = new Sabre_DAVACL_PrincipalBackend_Std($authBackend);
+		}
+		return self::$intstance;
+	}
+
 	/**
 	 * Returns a list of principals based on a prefix.
 	 *

dav/jqueryui/jquery-ui-1.8.21.custom.css

@@ -0,0 +1,375 @@
+/*!
+ * jQuery UI CSS Framework 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ */
+
+/* Layout helpers
+----------------------------------*/
+.ui-helper-hidden { display: none; }
+.ui-helper-hidden-accessible { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px,1px,1px,1px); }
+.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; }
+.ui-helper-clearfix:before, .ui-helper-clearfix:after { content: ""; display: table; }
+.ui-helper-clearfix:after { clear: both; }
+.ui-helper-clearfix { zoom: 1; }
+.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); }
+
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-disabled { cursor: default !important; }
+
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Overlays */
+.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
+
+
+/*!
+ * jQuery UI CSS Framework 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ *
+ * To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Trebuchet%20MS,%20Tahoma,%20Verdana,%20Arial,%20sans-serif&fwDefault=bold&fsDefault=1.1em&cornerRadius=4px&bgColorHeader=f6a828&bgTextureHeader=12_gloss_wave.png&bgImgOpacityHeader=35&borderColorHeader=e78f08&fcHeader=ffffff&iconColorHeader=ffffff&bgColorContent=eeeeee&bgTextureContent=03_highlight_soft.png&bgImgOpacityContent=100&borderColorContent=dddddd&fcContent=333333&iconColorContent=222222&bgColorDefault=f6f6f6&bgTextureDefault=02_glass.png&bgImgOpacityDefault=100&borderColorDefault=cccccc&fcDefault=1c94c4&iconColorDefault=ef8c08&bgColorHover=fdf5ce&bgTextureHover=02_glass.png&bgImgOpacityHover=100&borderColorHover=fbcb09&fcHover=c77405&iconColorHover=ef8c08&bgColorActive=ffffff&bgTextureActive=02_glass.png&bgImgOpacityActive=65&borderColorActive=fbd850&fcActive=eb8f00&iconColorActive=ef8c08&bgColorHighlight=ffe45c&bgTextureHighlight=03_highlight_soft.png&bgImgOpacityHighlight=75&borderColorHighlight=fed22f&fcHighlight=363636&iconColorHighlight=228ef1&bgColorError=b81900&bgTextureError=08_diagonals_thick.png&bgImgOpacityError=18&borderColorError=cd0a0a&fcError=ffffff&iconColorError=ffd27a&bgColorOverlay=666666&bgTextureOverlay=08_diagonals_thick.png&bgImgOpacityOverlay=20&opacityOverlay=50&bgColorShadow=000000&bgTextureShadow=01_flat.png&bgImgOpacityShadow=10&opacityShadow=20&thicknessShadow=5px&offsetTopShadow=-5px&offsetLeftShadow=-5px&cornerRadiusShadow=5px
+ */
+
+
+/* Component containers
+----------------------------------*/
+.ui-widget { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1.1em; }
+.ui-widget .ui-widget { font-size: 1em; }
+.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1em; }
+.ui-widget-content { border: 1px solid #dddddd; background: #eeeeee url(images/ui-bg_highlight-soft_100_eeeeee_1x100.png) 50% top repeat-x; color: #333333; }
+.ui-widget-content a { color: #333333; }
+.ui-widget-header { border: 1px solid #e78f08; background: #f6a828 url(images/ui-bg_gloss-wave_35_f6a828_500x100.png) 50% 50% repeat-x; color: #ffffff; font-weight: bold; }
+.ui-widget-header a { color: #ffffff; }
+
+/* Interaction states
+----------------------------------*/
+.ui-state-default, .ui-widget-content .ui-state-default, .ui-widget-header .ui-state-default { border: 1px solid #cccccc; background: #f6f6f6 url(images/ui-bg_glass_100_f6f6f6_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #1c94c4; }
+.ui-state-default a, .ui-state-default a:link, .ui-state-default a:visited { color: #1c94c4; text-decoration: none; }
+.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus { border: 1px solid #fbcb09; background: #fdf5ce url(images/ui-bg_glass_100_fdf5ce_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #c77405; }
+.ui-state-hover a, .ui-state-hover a:hover { color: #c77405; text-decoration: none; }
+.ui-state-active, .ui-widget-content .ui-state-active, .ui-widget-header .ui-state-active { border: 1px solid #fbd850; background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #eb8f00; }
+.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #eb8f00; text-decoration: none; }
+.ui-widget :active { outline: none; }
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight  {border: 1px solid #fed22f; background: #ffe45c url(images/ui-bg_highlight-soft_75_ffe45c_1x100.png) 50% top repeat-x; color: #363636; }
+.ui-state-highlight a, .ui-widget-content .ui-state-highlight a,.ui-widget-header .ui-state-highlight a { color: #363636; }
+.ui-state-error, .ui-widget-content .ui-state-error, .ui-widget-header .ui-state-error {border: 1px solid #cd0a0a; background: #b81900 url(images/ui-bg_diagonals-thick_18_b81900_40x40.png) 50% 50% repeat; color: #ffffff; }
+.ui-state-error a, .ui-widget-content .ui-state-error a, .ui-widget-header .ui-state-error a { color: #ffffff; }
+.ui-state-error-text, .ui-widget-content .ui-state-error-text, .ui-widget-header .ui-state-error-text { color: #ffffff; }
+.ui-priority-primary, .ui-widget-content .ui-priority-primary, .ui-widget-header .ui-priority-primary { font-weight: bold; }
+.ui-priority-secondary, .ui-widget-content .ui-priority-secondary,  .ui-widget-header .ui-priority-secondary { opacity: .7; filter:Alpha(Opacity=70); font-weight: normal; }
+.ui-state-disabled, .ui-widget-content .ui-state-disabled, .ui-widget-header .ui-state-disabled { opacity: .35; filter:Alpha(Opacity=35); background-image: none; }
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { width: 16px; height: 16px; background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-content .ui-icon {background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-header .ui-icon {background-image: url(images/ui-icons_ffffff_256x240.png); }
+.ui-state-default .ui-icon { background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-hover .ui-icon, .ui-state-focus .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-active .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-highlight .ui-icon {background-image: url(images/ui-icons_228ef1_256x240.png); }
+.ui-state-error .ui-icon, .ui-state-error-text .ui-icon {background-image: url(images/ui-icons_ffd27a_256x240.png); }
+
+/* positioning */
+.ui-icon-carat-1-n { background-position: 0 0; }
+.ui-icon-carat-1-ne { background-position: -16px 0; }
+.ui-icon-carat-1-e { background-position: -32px 0; }
+.ui-icon-carat-1-se { background-position: -48px 0; }
+.ui-icon-carat-1-s { background-position: -64px 0; }
+.ui-icon-carat-1-sw { background-position: -80px 0; }
+.ui-icon-carat-1-w { background-position: -96px 0; }
+.ui-icon-carat-1-nw { background-position: -112px 0; }
+.ui-icon-carat-2-n-s { background-position: -128px 0; }
+.ui-icon-carat-2-e-w { background-position: -144px 0; }
+.ui-icon-triangle-1-n { background-position: 0 -16px; }
+.ui-icon-triangle-1-ne { background-position: -16px -16px; }
+.ui-icon-triangle-1-e { background-position: -32px -16px; }
+.ui-icon-triangle-1-se { background-position: -48px -16px; }
+.ui-icon-triangle-1-s { background-position: -64px -16px; }
+.ui-icon-triangle-1-sw { background-position: -80px -16px; }
+.ui-icon-triangle-1-w { background-position: -96px -16px; }
+.ui-icon-triangle-1-nw { background-position: -112px -16px; }
+.ui-icon-triangle-2-n-s { background-position: -128px -16px; }
+.ui-icon-triangle-2-e-w { background-position: -144px -16px; }
+.ui-icon-arrow-1-n { background-position: 0 -32px; }
+.ui-icon-arrow-1-ne { background-position: -16px -32px; }
+.ui-icon-arrow-1-e { background-position: -32px -32px; }
+.ui-icon-arrow-1-se { background-position: -48px -32px; }
+.ui-icon-arrow-1-s { background-position: -64px -32px; }
+.ui-icon-arrow-1-sw { background-position: -80px -32px; }
+.ui-icon-arrow-1-w { background-position: -96px -32px; }
+.ui-icon-arrow-1-nw { background-position: -112px -32px; }
+.ui-icon-arrow-2-n-s { background-position: -128px -32px; }
+.ui-icon-arrow-2-ne-sw { background-position: -144px -32px; }
+.ui-icon-arrow-2-e-w { background-position: -160px -32px; }
+.ui-icon-arrow-2-se-nw { background-position: -176px -32px; }
+.ui-icon-arrowstop-1-n { background-position: -192px -32px; }
+.ui-icon-arrowstop-1-e { background-position: -208px -32px; }
+.ui-icon-arrowstop-1-s { background-position: -224px -32px; }
+.ui-icon-arrowstop-1-w { background-position: -240px -32px; }
+.ui-icon-arrowthick-1-n { background-position: 0 -48px; }
+.ui-icon-arrowthick-1-ne { background-position: -16px -48px; }
+.ui-icon-arrowthick-1-e { background-position: -32px -48px; }
+.ui-icon-arrowthick-1-se { background-position: -48px -48px; }
+.ui-icon-arrowthick-1-s { background-position: -64px -48px; }
+.ui-icon-arrowthick-1-sw { background-position: -80px -48px; }
+.ui-icon-arrowthick-1-w { background-position: -96px -48px; }
+.ui-icon-arrowthick-1-nw { background-position: -112px -48px; }
+.ui-icon-arrowthick-2-n-s { background-position: -128px -48px; }
+.ui-icon-arrowthick-2-ne-sw { background-position: -144px -48px; }
+.ui-icon-arrowthick-2-e-w { background-position: -160px -48px; }
+.ui-icon-arrowthick-2-se-nw { background-position: -176px -48px; }
+.ui-icon-arrowthickstop-1-n { background-position: -192px -48px; }
+.ui-icon-arrowthickstop-1-e { background-position: -208px -48px; }
+.ui-icon-arrowthickstop-1-s { background-position: -224px -48px; }
+.ui-icon-arrowthickstop-1-w { background-position: -240px -48px; }
+.ui-icon-arrowreturnthick-1-w { background-position: 0 -64px; }
+.ui-icon-arrowreturnthick-1-n { background-position: -16px -64px; }
+.ui-icon-arrowreturnthick-1-e { background-position: -32px -64px; }
+.ui-icon-arrowreturnthick-1-s { background-position: -48px -64px; }
+.ui-icon-arrowreturn-1-w { background-position: -64px -64px; }
+.ui-icon-arrowreturn-1-n { background-position: -80px -64px; }
+.ui-icon-arrowreturn-1-e { background-position: -96px -64px; }
+.ui-icon-arrowreturn-1-s { background-position: -112px -64px; }
+.ui-icon-arrowrefresh-1-w { background-position: -128px -64px; }
+.ui-icon-arrowrefresh-1-n { background-position: -144px -64px; }
+.ui-icon-arrowrefresh-1-e { background-position: -160px -64px; }
+.ui-icon-arrowrefresh-1-s { background-position: -176px -64px; }
+.ui-icon-arrow-4 { background-position: 0 -80px; }
+.ui-icon-arrow-4-diag { background-position: -16px -80px; }
+.ui-icon-extlink { background-position: -32px -80px; }
+.ui-icon-newwin { background-position: -48px -80px; }
+.ui-icon-refresh { background-position: -64px -80px; }
+.ui-icon-shuffle { background-position: -80px -80px; }
+.ui-icon-transfer-e-w { background-position: -96px -80px; }
+.ui-icon-transferthick-e-w { background-position: -112px -80px; }
+.ui-icon-folder-collapsed { background-position: 0 -96px; }
+.ui-icon-folder-open { background-position: -16px -96px; }
+.ui-icon-document { background-position: -32px -96px; }
+.ui-icon-document-b { background-position: -48px -96px; }
+.ui-icon-note { background-position: -64px -96px; }
+.ui-icon-mail-closed { background-position: -80px -96px; }
+.ui-icon-mail-open { background-position: -96px -96px; }
+.ui-icon-suitcase { background-position: -112px -96px; }
+.ui-icon-comment { background-position: -128px -96px; }
+.ui-icon-person { background-position: -144px -96px; }
+.ui-icon-print { background-position: -160px -96px; }
+.ui-icon-trash { background-position: -176px -96px; }
+.ui-icon-locked { background-position: -192px -96px; }
+.ui-icon-unlocked { background-position: -208px -96px; }
+.ui-icon-bookmark { background-position: -224px -96px; }
+.ui-icon-tag { background-position: -240px -96px; }
+.ui-icon-home { background-position: 0 -112px; }
+.ui-icon-flag { background-position: -16px -112px; }
+.ui-icon-calendar { background-position: -32px -112px; }
+.ui-icon-cart { background-position: -48px -112px; }
+.ui-icon-pencil { background-position: -64px -112px; }
+.ui-icon-clock { background-position: -80px -112px; }
+.ui-icon-disk { background-position: -96px -112px; }
+.ui-icon-calculator { background-position: -112px -112px; }
+.ui-icon-zoomin { background-position: -128px -112px; }
+.ui-icon-zoomout { background-position: -144px -112px; }
+.ui-icon-search { background-position: -160px -112px; }
+.ui-icon-wrench { background-position: -176px -112px; }
+.ui-icon-gear { background-position: -192px -112px; }
+.ui-icon-heart { background-position: -208px -112px; }
+.ui-icon-star { background-position: -224px -112px; }
+.ui-icon-link { background-position: -240px -112px; }
+.ui-icon-cancel { background-position: 0 -128px; }
+.ui-icon-plus { background-position: -16px -128px; }
+.ui-icon-plusthick { background-position: -32px -128px; }
+.ui-icon-minus { background-position: -48px -128px; }
+.ui-icon-minusthick { background-position: -64px -128px; }
+.ui-icon-close { background-position: -80px -128px; }
+.ui-icon-closethick { background-position: -96px -128px; }
+.ui-icon-key { background-position: -112px -128px; }
+.ui-icon-lightbulb { background-position: -128px -128px; }
+.ui-icon-scissors { background-position: -144px -128px; }
+.ui-icon-clipboard { background-position: -160px -128px; }
+.ui-icon-copy { background-position: -176px -128px; }
+.ui-icon-contact { background-position: -192px -128px; }
+.ui-icon-image { background-position: -208px -128px; }
+.ui-icon-video { background-position: -224px -128px; }
+.ui-icon-script { background-position: -240px -128px; }
+.ui-icon-alert { background-position: 0 -144px; }
+.ui-icon-info { background-position: -16px -144px; }
+.ui-icon-notice { background-position: -32px -144px; }
+.ui-icon-help { background-position: -48px -144px; }
+.ui-icon-check { background-position: -64px -144px; }
+.ui-icon-bullet { background-position: -80px -144px; }
+.ui-icon-radio-off { background-position: -96px -144px; }
+.ui-icon-radio-on { background-position: -112px -144px; }
+.ui-icon-pin-w { background-position: -128px -144px; }
+.ui-icon-pin-s { background-position: -144px -144px; }
+.ui-icon-play { background-position: 0 -160px; }
+.ui-icon-pause { background-position: -16px -160px; }
+.ui-icon-seek-next { background-position: -32px -160px; }
+.ui-icon-seek-prev { background-position: -48px -160px; }
+.ui-icon-seek-end { background-position: -64px -160px; }
+.ui-icon-seek-start { background-position: -80px -160px; }
+/* ui-icon-seek-first is deprecated, use ui-icon-seek-start instead */
+.ui-icon-seek-first { background-position: -80px -160px; }
+.ui-icon-stop { background-position: -96px -160px; }
+.ui-icon-eject { background-position: -112px -160px; }
+.ui-icon-volume-off { background-position: -128px -160px; }
+.ui-icon-volume-on { background-position: -144px -160px; }
+.ui-icon-power { background-position: 0 -176px; }
+.ui-icon-signal-diag { background-position: -16px -176px; }
+.ui-icon-signal { background-position: -32px -176px; }
+.ui-icon-battery-0 { background-position: -48px -176px; }
+.ui-icon-battery-1 { background-position: -64px -176px; }
+.ui-icon-battery-2 { background-position: -80px -176px; }
+.ui-icon-battery-3 { background-position: -96px -176px; }
+.ui-icon-circle-plus { background-position: 0 -192px; }
+.ui-icon-circle-minus { background-position: -16px -192px; }
+.ui-icon-circle-close { background-position: -32px -192px; }
+.ui-icon-circle-triangle-e { background-position: -48px -192px; }
+.ui-icon-circle-triangle-s { background-position: -64px -192px; }
+.ui-icon-circle-triangle-w { background-position: -80px -192px; }
+.ui-icon-circle-triangle-n { background-position: -96px -192px; }
+.ui-icon-circle-arrow-e { background-position: -112px -192px; }
+.ui-icon-circle-arrow-s { background-position: -128px -192px; }
+.ui-icon-circle-arrow-w { background-position: -144px -192px; }
+.ui-icon-circle-arrow-n { background-position: -160px -192px; }
+.ui-icon-circle-zoomin { background-position: -176px -192px; }
+.ui-icon-circle-zoomout { background-position: -192px -192px; }
+.ui-icon-circle-check { background-position: -208px -192px; }
+.ui-icon-circlesmall-plus { background-position: 0 -208px; }
+.ui-icon-circlesmall-minus { background-position: -16px -208px; }
+.ui-icon-circlesmall-close { background-position: -32px -208px; }
+.ui-icon-squaresmall-plus { background-position: -48px -208px; }
+.ui-icon-squaresmall-minus { background-position: -64px -208px; }
+.ui-icon-squaresmall-close { background-position: -80px -208px; }
+.ui-icon-grip-dotted-vertical { background-position: 0 -224px; }
+.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; }
+.ui-icon-grip-solid-vertical { background-position: -32px -224px; }
+.ui-icon-grip-solid-horizontal { background-position: -48px -224px; }
+.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; }
+.ui-icon-grip-diagonal-se { background-position: -80px -224px; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Corner radius */
+.ui-corner-all, .ui-corner-top, .ui-corner-left, .ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; -khtml-border-top-left-radius: 4px; border-top-left-radius: 4px; }
+.ui-corner-all, .ui-corner-top, .ui-corner-right, .ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; -khtml-border-top-right-radius: 4px; border-top-right-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-left, .ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; -khtml-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-right, .ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; -khtml-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; }
+
+/* Overlays */
+.ui-widget-overlay { background: #666666 url(images/ui-bg_diagonals-thick_20_666666_40x40.png) 50% 50% repeat; opacity: .50;filter:Alpha(Opacity=50); }
+.ui-widget-shadow { margin: -5px 0 0 -5px; padding: 5px; background: #000000 url(images/ui-bg_flat_10_000000_40x100.png) 50% 50% repeat-x; opacity: .20;filter:Alpha(Opacity=20); -moz-border-radius: 5px; -khtml-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px; }/*!
+ * jQuery UI Dialog 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Dialog#theming
+ */
+.ui-dialog { position: absolute; padding: .2em; width: 300px; overflow: hidden; }
+.ui-dialog .ui-dialog-titlebar { padding: .4em 1em; position: relative;  }
+.ui-dialog .ui-dialog-title { float: left; margin: .1em 16px .1em 0; } 
+.ui-dialog .ui-dialog-titlebar-close { position: absolute; right: .3em; top: 50%; width: 19px; margin: -10px 0 0 0; padding: 1px; height: 18px; }
+.ui-dialog .ui-dialog-titlebar-close span { display: block; margin: 1px; }
+.ui-dialog .ui-dialog-titlebar-close:hover, .ui-dialog .ui-dialog-titlebar-close:focus { padding: 0; }
+.ui-dialog .ui-dialog-content { position: relative; border: 0; padding: .5em 1em; background: none; overflow: auto; zoom: 1; }
+.ui-dialog .ui-dialog-buttonpane { text-align: left; border-width: 1px 0 0 0; background-image: none; margin: .5em 0 0 0; padding: .3em 1em .5em .4em; }
+.ui-dialog .ui-dialog-buttonpane .ui-dialog-buttonset { float: right; }
+.ui-dialog .ui-dialog-buttonpane button { margin: .5em .4em .5em 0; cursor: pointer; }
+.ui-dialog .ui-resizable-se { width: 14px; height: 14px; right: 3px; bottom: 3px; }
+.ui-draggable .ui-dialog-titlebar { cursor: move; }
+/*!
+ * jQuery UI Datepicker 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Datepicker#theming
+ */
+.ui-datepicker { width: 17em; padding: .2em .2em 0; display: none; }
+.ui-datepicker .ui-datepicker-header { position:relative; padding:.2em 0; }
+.ui-datepicker .ui-datepicker-prev, .ui-datepicker .ui-datepicker-next { position:absolute; top: 2px; width: 1.8em; height: 1.8em; }
+.ui-datepicker .ui-datepicker-prev-hover, .ui-datepicker .ui-datepicker-next-hover { top: 1px; }
+.ui-datepicker .ui-datepicker-prev { left:2px; }
+.ui-datepicker .ui-datepicker-next { right:2px; }
+.ui-datepicker .ui-datepicker-prev-hover { left:1px; }
+.ui-datepicker .ui-datepicker-next-hover { right:1px; }
+.ui-datepicker .ui-datepicker-prev span, .ui-datepicker .ui-datepicker-next span { display: block; position: absolute; left: 50%; margin-left: -8px; top: 50%; margin-top: -8px;  }
+.ui-datepicker .ui-datepicker-title { margin: 0 2.3em; line-height: 1.8em; text-align: center; }
+.ui-datepicker .ui-datepicker-title select { font-size:1em; margin:1px 0; }
+.ui-datepicker select.ui-datepicker-month-year {width: 100%;}
+.ui-datepicker select.ui-datepicker-month, 
+.ui-datepicker select.ui-datepicker-year { width: 49%;}
+.ui-datepicker table {width: 100%; font-size: .9em; border-collapse: collapse; margin:0 0 .4em; }
+.ui-datepicker th { padding: .7em .3em; text-align: center; font-weight: bold; border: 0;  }
+.ui-datepicker td { border: 0; padding: 1px; }
+.ui-datepicker td span, .ui-datepicker td a { display: block; padding: .2em; text-align: right; text-decoration: none; }
+.ui-datepicker .ui-datepicker-buttonpane { background-image: none; margin: .7em 0 0 0; padding:0 .2em; border-left: 0; border-right: 0; border-bottom: 0; }
+.ui-datepicker .ui-datepicker-buttonpane button { float: right; margin: .5em .2em .4em; cursor: pointer; padding: .2em .6em .3em .6em; width:auto; overflow:visible; }
+.ui-datepicker .ui-datepicker-buttonpane button.ui-datepicker-current { float:left; }
+
+/* with multiple calendars */
+.ui-datepicker.ui-datepicker-multi { width:auto; }
+.ui-datepicker-multi .ui-datepicker-group { float:left; }
+.ui-datepicker-multi .ui-datepicker-group table { width:95%; margin:0 auto .4em; }
+.ui-datepicker-multi-2 .ui-datepicker-group { width:50%; }
+.ui-datepicker-multi-3 .ui-datepicker-group { width:33.3%; }
+.ui-datepicker-multi-4 .ui-datepicker-group { width:25%; }
+.ui-datepicker-multi .ui-datepicker-group-last .ui-datepicker-header { border-left-width:0; }
+.ui-datepicker-multi .ui-datepicker-group-middle .ui-datepicker-header { border-left-width:0; }
+.ui-datepicker-multi .ui-datepicker-buttonpane { clear:left; }
+.ui-datepicker-row-break { clear:both; width:100%; font-size:0em; }
+
+/* RTL support */
+.ui-datepicker-rtl { direction: rtl; }
+.ui-datepicker-rtl .ui-datepicker-prev { right: 2px; left: auto; }
+.ui-datepicker-rtl .ui-datepicker-next { left: 2px; right: auto; }
+.ui-datepicker-rtl .ui-datepicker-prev:hover { right: 1px; left: auto; }
+.ui-datepicker-rtl .ui-datepicker-next:hover { left: 1px; right: auto; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane { clear:right; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane button { float: left; }
+.ui-datepicker-rtl .ui-datepicker-buttonpane button.ui-datepicker-current { float:right; }
+.ui-datepicker-rtl .ui-datepicker-group { float:right; }
+.ui-datepicker-rtl .ui-datepicker-group-last .ui-datepicker-header { border-right-width:0; border-left-width:1px; }
+.ui-datepicker-rtl .ui-datepicker-group-middle .ui-datepicker-header { border-right-width:0; border-left-width:1px; }
+
+/* IE6 IFRAME FIX (taken from datepicker 1.5.3 */
+.ui-datepicker-cover {
+    display: none; /*sorry for IE5*/
+    display/**/: block; /*sorry for IE5*/
+    position: absolute; /*must have*/
+    z-index: -1; /*must have*/
+    filter: mask(); /*must have*/
+    top: -4px; /*must have*/
+    left: -4px; /*must have*/
+    width: 200px; /*must have*/
+    height: 200px; /*must have*/
+}

dav/jqueryui/jquery.ui.datepicker-de.js

@@ -0,0 +1,23 @@
+/* German initialisation for the jQuery UI date picker plugin. */
+/* Written by Milian Wolff (mail@milianw.de). */
+jQuery(function($){
+	$.datepicker.regional['de'] = {
+		closeText: 'schließen',
+		prevText: '<zurück',
+		nextText: 'Vor>',
+		currentText: 'heute',
+		monthNames: ['Januar','Februar','März','April','Mai','Juni',
+		'Juli','August','September','Oktober','November','Dezember'],
+		monthNamesShort: ['Jan','Feb','Mär','Apr','Mai','Jun',
+		'Jul','Aug','Sep','Okt','Nov','Dez'],
+		dayNames: ['Sonntag','Montag','Dienstag','Mittwoch','Donnerstag','Freitag','Samstag'],
+		dayNamesShort: ['So','Mo','Di','Mi','Do','Fr','Sa'],
+		dayNamesMin: ['So','Mo','Di','Mi','Do','Fr','Sa'],
+		weekHeader: 'Wo',
+		dateFormat: 'dd.mm.yy',
+		firstDay: 1,
+		isRTL: false,
+		showMonthAfterYear: false,
+		yearSuffix: ''};
+	$.datepicker.setDefaults($.datepicker.regional['de']);
+});

dav/layout.fnk.php

@@ -8,8 +8,8 @@ function wdcal_addRequiredHeaders()
 {
 	$a = get_app();
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.20.custom.css' . '" media="all" />' . "\r\n";
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.20.custom.min.js"></script>' . "\r\n";
+	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.21.custom.css' . '" media="all" />' . "\r\n";
+	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.21.custom.min.js"></script>' . "\r\n";
 
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/wdcal.css' . '" media="all" />' . "\r\n";
 	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal.js"></script>' . "\r\n";
@@ -20,6 +20,7 @@ function wdcal_addRequiredHeaders()
 	switch (get_config("system", "language")) {
 		case "de":
 			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal/js/wdCalendar_lang_DE.js"></script>' . "\r\n";
+			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery.ui.datepicker-de.js"></script>' . "\r\n";
 			break;
 		default:
 			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal/js/wdCalendar_lang_EN.js"></script>' . "\r\n";
@@ -34,10 +35,12 @@ function wdcal_addRequiredHeaders()
  */
 function wdcal_addRequiredHeadersEdit()
 {
-	$a = get_app();
 
-	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.20.custom.css' . '" media="all" />' . "\r\n";
-	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.20.custom.min.js"></script>' . "\r\n";
+	$a            = get_app();
+	$localization = wdcal_local::getInstanceByUser($a->user["uid"]);
+
+	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.21.custom.css' . '" media="all" />' . "\r\n";
+	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery-ui-1.8.21.custom.min.js"></script>' . "\r\n";
 
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/colorpicker/colorPicker.css' . '" media="all" />' . "\r\n";
 	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/colorpicker/jquery.colorPicker.min.js"></script>' . "\r\n";
@@ -48,12 +51,56 @@ function wdcal_addRequiredHeadersEdit()
 	$a->page['htmlhead'] .= '<link rel="stylesheet"  type="text/css" href="' . $a->get_baseurl() . '/addon/dav/wdcal.css' . '" media="all" />' . "\r\n";
 	$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal.js"></script>' . "\r\n";
 
+	switch ($localization->getLanguageCode()) {
+		case "de":
+			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal/js/wdCalendar_lang_DE.js"></script>' . "\r\n";
+			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/jqueryui/jquery.ui.datepicker-de.js"></script>' . "\r\n";
+			break;
+		default:
+			$a->page['htmlhead'] .= '<script type="text/javascript" src="' . $a->get_baseurl() . '/addon/dav/common/wdcal/js/wdCalendar_lang_EN.js"></script>' . "\r\n";
+	}
+
+}
+
+/**
+ * @param array|int[] $calendars
+ */
+function wdcal_print_user_ics($calendars = array())
+{
+	$add = "";
+	if (count($calendars) > 0) {
+		$c = array();
+		foreach ($calendars as $i) $c[] = IntVal($i);
+		$add = " AND `id` IN (" . implode(", ", $c) . ")";
+	}
+
+	$a = get_app();
+	header("Content-type: text/plain");
+
+	$str  = "BEGIN:VCALENDAR\r\nVERSION:2.0\r\nPRODID:-//Friendica//DAV-Plugin//EN\r\n";
+	$cals = q("SELECT * FROM %s%scalendars WHERE `namespace` = %d AND `namespace_id` = %d %s", CALDAV_SQL_DB, CALDAV_SQL_PREFIX, CALDAV_NAMESPACE_PRIVATE, $a->user["uid"], $add);
+	if (count($cals) > 0) {
+		$ids = array();
+		foreach ($cals as $c) $ids[] = IntVal($c["id"]);
+		$objs = q("SELECT * FROM %s%scalendarobjects WHERE `calendar_id` IN (" . implode(", ", $ids) . ") ORDER BY `firstOccurence`", CALDAV_SQL_DB, CALDAV_SQL_PREFIX);
+
+		foreach ($objs as $obj) {
+			preg_match("/BEGIN:VEVENT(.*)END:VEVENT/siu", $obj["calendardata"], $matches);
+			$str2 = preg_replace("/([^\\r])\\n/siu", "\\1\r\n", $matches[0]);
+			$str2 = preg_replace("/MAILTO:.*[^:a-z0-9_\+äöüß\\n\\n@-]+.*(:|\\r\\n[^ ])/siU", "\\1", $str2);
+			$str .= $str2 . "\r\n";
+		}
+	}
+	$str .= "END:VCALENDAR\r\n";
+
+	echo $str;
+	killme();
 }
 
 
 /**
- * @param array|DBClass_friendica_calendars[] $calendars
- * @param array $calendar_preselected
+ * @param array|Sabre_CalDAV_Calendar[] $calendars
+ * @param array|int[] $calendars_selected
  * @param string $data_feed_url
  * @param string $view
  * @param int $theme
@@ -64,14 +111,17 @@ function wdcal_addRequiredHeadersEdit()
  * @param bool $show_nav
  * @return string
  */
-function wdcal_printCalendar($calendars, $calendar_preselected, $data_feed_url, $view = "week", $theme = 0, $height_diff = 175, $readonly = false, $curr_day = "", $add_params = array(), $show_nav = true)
+function wdcal_printCalendar($calendars, $calendars_selected, $data_feed_url, $view = "week", $theme = 0, $height_diff = 175, $readonly = false, $curr_day = "", $add_params = array(), $show_nav = true)
 {
 
 	$a            = get_app();
 	$localization = wdcal_local::getInstanceByUser($a->user["uid"]);
 
-	$cals_avail = array();
-	foreach ($calendars as $c) $cals_avail[] = array("ns" => $c->namespace, "id" => $c->namespace_id, "displayname" => $c->displayname);
+	if (count($calendars_selected) == 0) foreach ($calendars as $c) {
+		$prop                 = $c->getProperties(array("id"));
+		$calendars_selected[] = $prop["id"];
+	}
+
 	$opts = array(
 		"view"             => $view,
 		"theme"            => $theme,
@@ -96,12 +146,13 @@ function wdcal_printCalendar($calendars, $calendar_preselected, $data_feed_url,
 <div id="animexxcalendar" class="animexxcalendar">
 	<div class="calselect"><strong>Available Calendars:</strong>';
 
-	foreach ($cals_avail as $cal) {
-		$x .= '<label style="margin-left: 10px; margin-right: 10px;"><input type="checkbox" name="cals[]" value="' . $cal["ns"] . '-' . $cal["id"] . '"';
+	foreach ($calendars as $cal) {
+		$cal_id = $cal->getProperties(array("id", DAV_DISPLAYNAME));
+		$x .= '<label style="margin-left: 10px; margin-right: 10px;"><input type="checkbox" name="cals[]" value="' . $cal_id["id"] . '"';
 		$found = false;
-		foreach ($calendar_preselected as $pre) if ($pre["ns"] == $cal["ns"] && $pre["id"] == $cal["id"]) $found = true;
+		foreach ($calendars_selected as $pre) if ($pre["id"] == $cal_id["id"]) $found = true;
 		if ($found) $x .= ' checked';
-		$x .= '> ' . escape_tags($cal["displayname"]) . '</label> ';
+		$x .= '> ' . escape_tags($cal_id[DAV_DISPLAYNAME]) . '</label> ';
 	}
 
 	$x .= '</div>
@@ -179,166 +230,57 @@ function wdcal_printCalendar($calendars, $calendar_preselected, $data_feed_url,
 
 
 /**
- * @param string $uri
+ * @param int $calendar_id
+ * @param int $calendarobject_id
  * @param string $recurr_uri
  * @return string
  */
-function wdcal_getDetailPage($uri, $recurr_uri)
+function wdcal_getDetailPage($calendar_id, $calendarobject_id, $recurr_uri)
 {
 	$a = get_app();
 
-	$details = null;
-	$cals    = dav_getMyCals($a->user["uid"]);
-	foreach ($cals as $c) {
-		$cs = wdcal_calendar_factory($a->user["uid"], $c->namespace, $c->namespace_id);
-		$p  = $cs->getPermissionsItem($a->user["uid"], $uri, $recurr_uri);
-		if ($p["read"]) try {
-			$redirect = $cs->getItemDetailRedirect($uri);
-			if ($redirect !== null) goaway($redirect);
-			$details = $cs->getItemByUri($uri);
-		} catch (Exception $e) {
-			notification(t("Error") . ": " . $e);
-			goaway($a->get_baseurl() . "/dav/wdcal/");
-		}
+	try {
+		$details = null;
+		$server  = dav_create_server(true, true, false);
+		$cal     = dav_get_current_user_calendar_by_id($server, $calendar_id, DAV_ACL_READ);
+		$obj     = Sabre_CalDAV_Backend_Common::loadCalendarobjectById($calendarobject_id);
+		dav_get_current_user_calendarobject($server, $cal, $obj["uri"], DAV_ACL_READ); // Check permissions
+
+		$calbackend = wdcal_calendar_factory_by_id($calendar_id);
+		$redirect   = $calbackend->getItemDetailRedirect($calendar_id, $calendarobject_id);
+
+		if ($redirect !== null) goaway($a->get_baseurl() . $redirect);
+
+		$details = $obj;
+	} catch (Exception $e) {
+		info(t("Error") . ": " . $e);
+		goaway($a->get_baseurl() . "/dav/wdcal/");
 	}
 
-
-	return $uri . " / " . $recurr_uri . "<br>" . print_r($details, true);
+	return print_r($details, true);
 }
 
+
 /**
- * @param string $uri
+ * @param int $calendar_id
+ * @param int $uri
  * @param string $recurr_uri
  * @return string
  */
-function wdcal_getEditPage($uri, $recurr_uri = "")
+function wdcal_getEditPage($calendar_id, $uri, $recurr_uri = "")
 {
-
 	$a            = get_app();
 	$localization = wdcal_local::getInstanceByUser($a->user["uid"]);
 
-	if ($uri != "" && $uri != "new") {
-		$o = q("SELECT * FROM %s%sjqcalendar WHERE `uid` = %d AND `ical_uri` = '%s' AND `ical_recurr_uri` = '%s'",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $a->user["uid"], dbesc($uri), dbesc($recurr_uri)
-		);
-		if (count($o) != 1) return t('Not found');
-		$event = $o[0];
+	return wdcal_getEditPage_str($localization, $a->get_baseurl(), $a->user["uid"], $calendar_id, $uri, $recurr_uri);
+}
 
-		$calendarSource = wdcal_calendar_factory($a->user["uid"], $event["namespace"], $event["namespace_id"]);
+function wdcal_getNewPage()
+{
+	$a            = get_app();
+	$localization = wdcal_local::getInstanceByUser($a->user["uid"]);
 
-		$permissions = $calendarSource->getPermissionsItem($a->user["uid"], $uri, $recurr_uri, $event);
-
-		if (!$permissions["write"]) return t('No access');
-
-		$n = q("SELECT * FROM %s%snotifications WHERE `uid` = %d AND `ical_uri` = '%s' AND `ical_recurr_uri` = '%s'",
-			CALDAV_SQL_DB, CALDAV_SQL_PREFIX, $a->user["uid"], dbesc($uri), dbesc($recurr_uri)
-		);
-		if (count($n) > 0) {
-			$notification_type  = $n[0]["rel_type"];
-			$notification_value = -1 * $n[0]["rel_value"];
-			$notification       = true;
-		} else {
-			if ($event["IsAllDayEvent"]) {
-				$notification_type  = "hour";
-				$notification_value = 24;
-			} else {
-				$notification_type  = "minute";
-				$notification_value = 60;
-			}
-			$notification = false;
-		}
-
-
-	} elseif (isset($_REQUEST["start"]) && $_REQUEST["start"] > 0) {
-		$event = array(
-			"id"            => 0,
-			"Subject"       => $_REQUEST["title"],
-			"Location"      => "",
-			"Description"   => "",
-			"StartTime"     => wdcal_php2MySqlTime($_REQUEST["start"]),
-			"EndTime"       => wdcal_php2MySqlTime($_REQUEST["end"]),
-			"IsAllDayEvent" => $_REQUEST["isallday"],
-			"Color"         => null,
-			"RecurringRule" => null,
-		);
-		if ($_REQUEST["isallday"]) {
-			$notification_type  = "hour";
-			$notification_value = 24;
-		} else {
-			$notification_type  = "hour";
-			$notification_value = 1;
-		}
-
-		$notification = true;
-	} else {
-		$event              = array(
-			"id"            => 0,
-			"Subject"       => "",
-			"Location"      => "",
-			"Description"   => "",
-			"StartTime"     => date("Y-m-d H:i:s"),
-			"EndTime"       => date("Y-m-d H:i:s", time() + 3600),
-			"IsAllDayEvent" => "0",
-			"Color"         => "#5858ff",
-			"RecurringRule" => null,
-		);
-		$notification_type  = "hour";
-		$notification_value = 1;
-		$notification       = true;
-	}
-
-	$postto = $a->get_baseurl() . "/dav/wdcal/" . ($uri == "new" ? "new/" : $uri . "/edit/");
-
-	$out = "<a href='" . $a->get_baseurl() . "/dav/wdcal/'>" . t("Go back to the calendar") . "</a><br><br>";
-	$out .= "<form method='POST' action='$postto'><input type='hidden' name='form_security_token' value='" . get_form_security_token('caledit') . "'>\n";
-
-	$out .= "<label for='cal_subject'>Subject:</label>
-		<input name='color' id='cal_color' value='" . (strlen($event["Color"]) != 7 ? "#5858ff" : escape_tags($event["Color"])) . "'>
-		<input name='subject' id='cal_subject' value='" . escape_tags($event["Subject"]) . "'><br>\n";
-	$out .= "<label for='cal_allday'>Is All-Day event:</label><input type='checkbox' name='allday' id='cal_allday' " . ($event["IsAllDayEvent"] ? "checked" : "") . "><br>\n";
-
-	$out .= "<label for='cal_startdate'>" . t("Starts") . ":</label>";
-	$out .= "<input name='start_date' value='" . $localization->dateformat_datepicker_php(wdcal_mySql2PhpTime($event["StartTime"])) . "' id='cal_start_date'>";
-	$out .= "<input name='start_time' value='" . substr($event["StartTime"], 11, 5) . "' id='cal_start_time'>";
-	$out .= "<br>\n";
-
-	$out .= "<label for='cal_enddate'>" . t("Ends") . ":</label>";
-	$out .= "<input name='end_date' value='" . $localization->dateformat_datepicker_php(wdcal_mySql2PhpTime($event["EndTime"])) . "' id='cal_end_date'>";
-	$out .= "<input name='end_time' value='" . substr($event["EndTime"], 11, 5) . "' id='cal_end_time'>";
-	$out .= "<br>\n";
-
-	$out .= "<label for='cal_location'>" . t("Location") . ":</label><input name='location' id='cal_location' value='" . escape_tags($event["Location"]) . "'><br>\n";
-
-	$out .= "<label for='event-desc-textarea'>" . t("Description") . ":</label> <textarea id='event-desc-textarea' name='wdcal_desc' style='vertical-align: top; width: 400px; height: 100px;'>" . escape_tags($event["Description"]) . "</textarea>";
-	$out .= "<br style='clear: both;'>";
-
-	$out .= "<label for='notification'>" . t('Notification') . ":</label>";
-	$out .= '<input type="checkbox" name="notification" id="notification" ';
-	if ($notification) $out .= "checked";
-	$out .= '> ';
-	$out .= '<span id="notification_detail" style="display: none;">
-			<input name="notification_value" value="' . $notification_value . '" size="3">
-			<select name="notification_type" size="1">
-				<option value="minute" ';
-	if ($notification_type == "minute") $out .= "selected";
-	$out .= '> ' . t('Minutes') . '</option>
-				<option value="hour" ';
-	if ($notification_type == "hour") $out .= "selected";
-	$out .= '> ' . t('Hours') . '</option>
-				<option value="day" ';
-	if ($notification_type == "day") echo "selected";
-	$out .= '> ' . t('Days') . '</option>
-			</select> ' . t('before') . '
-		</span><br><br>';
-
-
-	$out .= "<script>\$(function() {
-		wdcal_edit_init('" . $localization->dateformat_datepicker_js() . "');
-	});</script>";
-
-	$out .= "<input type='submit' name='save' value='Save'></form>";
-
-	return $out;
+	return wdcal_getEditPage_str($localization, $a->get_baseurl(), $a->user["uid"], 0, 0);
 }
 
 

dav/main.php

@@ -24,12 +24,6 @@ function dav_module()
 
 function dav_include_files()
 {
-	require_once (__DIR__ . "/common/dbclasses/dbclass_animexx.class.php");
-	require_once (__DIR__ . "/common/dbclasses/dbclass.friendica.calendars.class.php");
-	require_once (__DIR__ . "/common/dbclasses/dbclass.friendica.jqcalendar.class.php");
-	require_once (__DIR__ . "/common/dbclasses/dbclass.friendica.notifications.class.php");
-	require_once (__DIR__ . "/common/dbclasses/dbclass.friendica.calendarobjects.class.php");
-
 	/*
 			require_once (__DIR__ . "/SabreDAV/lib/Sabre.includes.php");
 			require_once (__DIR__ . "/SabreDAV/lib/Sabre/VObject/includes.php");
@@ -38,31 +32,27 @@ function dav_include_files()
 			*/
 	require_once (__DIR__ . "/SabreDAV/lib/Sabre/autoload.php");
 
-	$tz_before = date_default_timezone_get();
-	require_once (__DIR__ . "/iCalcreator/iCalcreator.class.php");
-	date_default_timezone_set($tz_before);
-
 	require_once (__DIR__ . "/common/calendar.fnk.php");
+	require_once (__DIR__ . "/common/calendar_rendering.fnk.php");
 	require_once (__DIR__ . "/common/dav_caldav_backend_common.inc.php");
-	require_once (__DIR__ . "/common/dav_caldav_backend.inc.php");
+	require_once (__DIR__ . "/common/dav_caldav_backend_private.inc.php");
+	require_once (__DIR__ . "/common/dav_caldav_backend_virtual.inc.php");
 	require_once (__DIR__ . "/common/dav_caldav_root.inc.php");
 	require_once (__DIR__ . "/common/dav_user_calendars.inc.php");
 	require_once (__DIR__ . "/common/dav_carddav_root.inc.php");
 	require_once (__DIR__ . "/common/dav_carddav_backend_std.inc.php");
 	require_once (__DIR__ . "/common/dav_user_addressbooks.inc.php");
-	require_once (__DIR__ . "/common/virtual_cal_source_backend.inc.php");
+	require_once (__DIR__ . "/common/dav_caldav_calendar_virtual.inc.php");
 	require_once (__DIR__ . "/common/wdcal_configuration.php");
-	require_once (__DIR__ . "/common/wdcal_cal_source.inc.php");
-	require_once (__DIR__ . "/common/wdcal_cal_source_private.inc.php");
+	require_once (__DIR__ . "/common/wdcal_backend.inc.php");
 
 	require_once (__DIR__ . "/dav_friendica_principal.inc.php");
 	require_once (__DIR__ . "/dav_friendica_auth.inc.php");
-	require_once (__DIR__ . "/dav_carddav_backend_friendica_community.inc.php");
-	require_once (__DIR__ . "/dav_caldav_backend_friendica.inc.php");
-	require_once (__DIR__ . "/virtual_cal_source_friendica.inc.php");
-	require_once (__DIR__ . "/wdcal_cal_source_friendicaevents.inc.php");
+	require_once (__DIR__ . "/dav_carddav_backend_virtual_friendica.inc.php");
+	require_once (__DIR__ . "/dav_caldav_backend_virtual_friendica.inc.php");
 	require_once (__DIR__ . "/FriendicaACLPlugin.inc.php");
 
+	require_once (__DIR__ . "/common/wdcal_edit.inc.php");
 	require_once (__DIR__ . "/calendar.friendica.fnk.php");
 	require_once (__DIR__ . "/layout.fnk.php");
 }
@@ -81,7 +71,7 @@ function dav_init(&$a)
 
 	dav_include_files();
 
-	if (false) {
+	if (true) {
 		dbg(true);
 		error_reporting(E_ALL);
 		ini_set("display_errors", 1);
@@ -102,58 +92,24 @@ function dav_init(&$a)
 		}
 		return;
 	}
+	if ($a->argc >= 2 && $a->argv[1] == "getExceptionDates") {
+		echo wdcal_getEditPage_exception_selector();
+		killme();
+	}
 
 	if ($a->argc >= 2 && $a->argv[1] == "settings") {
 		return;
 	}
 
-	$authBackend              = new Sabre_DAV_Auth_Backend_Friendica();
-	$principalBackend         = new Sabre_DAVACL_PrincipalBackend_Friendica($authBackend);
-	$caldavBackend_std        = new Sabre_CalDAV_Backend_Std();
-	$caldavBackend_community  = new Sabre_CalDAV_Backend_Friendica();
-	$carddavBackend_std       = new Sabre_CardDAV_Backend_Std();
-	$carddavBackend_community = new Sabre_CardDAV_Backend_FriendicaCommunity();
 
-	if (isset($_SERVER["PHP_AUTH_USER"])) {
-		$tree = new Sabre_DAV_SimpleCollection('root', array(
-			new Sabre_DAV_SimpleCollection('principals', array(
-				new Sabre_CalDAV_Principal_Collection($principalBackend, "principals/users"),
-			)),
-			new Sabre_CalDAV_AnimexxCalendarRootNode($principalBackend, array(
-				$caldavBackend_std,
-				$caldavBackend_community,
-			)),
-			new Sabre_CardDAV_AddressBookRootFriendica($principalBackend, array(
-				$carddavBackend_std,
-				$carddavBackend_community,
-			)),
-		));
-	} else {
-		$tree = new Sabre_DAV_SimpleCollection('root', array());
+	if (isset($_REQUEST["test"])) {
+		renderAllCalDavEntries();
 	}
 
-// The object tree needs in turn to be passed to the server class
-	$server = new Sabre_DAV_Server($tree);
-
-	$url = parse_url($a->get_baseurl());
-	$server->setBaseUri(CALDAV_URL_PREFIX);
-
-	$authPlugin = new Sabre_DAV_Auth_Plugin($authBackend, 'SabreDAV');
-	$server->addPlugin($authPlugin);
-
-	$aclPlugin                      = new Sabre_DAVACL_Plugin_Friendica();
-	$aclPlugin->defaultUsernamePath = "principals/users";
-	$server->addPlugin($aclPlugin);
-
-	$caldavPlugin = new Sabre_CalDAV_Plugin();
-	$server->addPlugin($caldavPlugin);
-
-	$carddavPlugin = new Sabre_CardDAV_Plugin();
-	$server->addPlugin($carddavPlugin);
 
+	$server = dav_create_server();
 	$browser = new Sabre_DAV_Browser_Plugin();
 	$server->addPlugin($browser);
-
 	$server->exec();
 
 	killme();
@@ -174,36 +130,44 @@ function dav_content()
 	if ($a->argv[1] == "settings") {
 		return wdcal_getSettingsPage($a);
 	} elseif ($a->argv[1] == "wdcal") {
-		if ($a->argc >= 3 && strlen($a->argv[2]) > 0) {
-			$uri = $a->argv[2];
-
-			if ($uri == "new") {
+		if (isset($a->argv[2]) && strlen($a->argv[2]) > 0) {
+			if ($a->argv[2] == "ics") {
+				wdcal_print_user_ics();
+			} elseif ($a->argv[2] == "new") {
 				$o = "";
 				if (isset($_REQUEST["save"])) {
 					check_form_security_token_redirectOnErr($a->get_baseurl() . "/dav/wdcal/", "caledit");
-					$o .= wdcal_postEditPage("new", "", $a->user["uid"], $a->timezone, $a->get_baseurl() . "/dav/wdcal/");
+					$ret = wdcal_postEditPage("new", "", $a->user["uid"], $a->timezone, $a->get_baseurl() . "/dav/wdcal/");
+					if ($ret["ok"]) notice($ret["msg"]);
+					else info($ret["msg"]);
 				}
-				$o .= wdcal_getEditPage("new");
+				$o .= wdcal_getNewPage();
 				return $o;
 			} else {
-				$recurr_uri = ""; // @TODO
-				if (isset($a->argv[3]) && $a->argv[3] == "edit") {
-					$o = "";
-					if (isset($_REQUEST["save"])) {
-						check_form_security_token_redirectOnErr($a->get_baseurl() . "/dav/wdcal/", "caledit");
-						$o .= wdcal_postEditPage($uri, $recurr_uri, $a->user["uid"], $a->timezone, $a->get_baseurl() . "/dav/wdcal/");
+				$calendar_id = IntVal($a->argv[2]);
+				if (isset($a->argv[3]) && $a->argv[3] > 0) {
+					$recurr_uri = ""; // @TODO
+					if (isset($a->argv[4]) && $a->argv[4] == "edit") {
+						$o = "";
+						if (isset($_REQUEST["save"])) {
+							check_form_security_token_redirectOnErr($a->get_baseurl() . "/dav/wdcal/", "caledit");
+							$ret = wdcal_postEditPage($a->argv[3], $recurr_uri, $a->user["uid"], $a->timezone, $a->get_baseurl() . "/dav/wdcal/");
+							if ($ret["ok"]) notice($ret["msg"]);
+							else info($ret["msg"]);
+						}
+						$o .= wdcal_getEditPage($calendar_id, $a->argv[3], $recurr_uri);
+						return $o;
+					} else {
+						return wdcal_getDetailPage($calendar_id, $a->argv[3], $recurr_uri);
 					}
-					$o .= wdcal_getEditPage($uri, $recurr_uri);
-					return $o;
 				} else {
-					return wdcal_getDetailPage($uri, $recurr_uri);
+					// @TODO Edit Calendar
 				}
 			}
 		} else {
-			$cals      = dav_getMyCals($a->user["uid"]);
-			$cals_show = array();
-			foreach ($cals as $e) $cals_show[] = array("ns" => $e->namespace, "id" => $e->namespace_id, "displayname" => $e->displayname);
-			$x = wdcal_printCalendar($cals, $cals_show, $a->get_baseurl() . "/dav/wdcal/feed/", "week", 0, 200);
+			$server = dav_create_server(true, true, false);
+			$cals = dav_get_current_user_calendars($server, DAV_ACL_READ);
+			$x = wdcal_printCalendar($cals, array(), $a->get_baseurl() . "/dav/wdcal/feed/", "week", 0, 200);
 		}
 	}
 	return $x;
@@ -218,8 +182,8 @@ function dav_event_created_hook(&$a, &$b)
 {
 	dav_include_files();
 	// @TODO Updating the cache instead of completely invalidating and rebuilding it
-	FriendicaVirtualCalSourceBackend::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_CONTACTS);
-	FriendicaVirtualCalSourceBackend::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_MINE);
+	Sabre_CalDAV_Backend_Friendica::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_CONTACTS);
+	Sabre_CalDAV_Backend_Friendica::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_MINE);
 }
 
 /**
@@ -230,8 +194,8 @@ function dav_event_updated_hook(&$a, &$b)
 {
 	dav_include_files();
 	// @TODO Updating the cache instead of completely invalidating and rebuilding it
-	FriendicaVirtualCalSourceBackend::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_CONTACTS);
-	FriendicaVirtualCalSourceBackend::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_MINE);
+	Sabre_CalDAV_Backend_Friendica::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_CONTACTS);
+	Sabre_CalDAV_Backend_Friendica::invalidateCache($a->user["uid"], CALDAV_FRIENDICA_MINE);
 }
 
 /**
@@ -256,6 +220,7 @@ function dav_plugin_admin_post(&$a = null, &$o = null)
 {
 	check_form_security_token_redirectOnErr('/admin/plugins/dav', 'dav_admin_save');
 
+	dav_include_files();
 	require_once(__DIR__ . "/database-init.inc.php");
 
 	if (isset($_REQUEST["install"])) {
@@ -263,15 +228,20 @@ function dav_plugin_admin_post(&$a = null, &$o = null)
 		if (count($errs) == 0) info(t('The database tables have been installed.') . EOL);
 		else notice(t("An error occurred during the installation.") . EOL);
 	}
+	if (isset($_REQUEST["upgrade"])) {
+		$errs = dav_upgrade_tables();
+		if (count($errs) == 0) info(t('The database tables have been updated.') . EOL);
+		else notice(t("An error occurred during the update.") . EOL);
+	}
 }
 
 /**
  * @param App $a
- * @param null|object $o
+ * @param string $o
  */
 function dav_plugin_admin(&$a, &$o)
 {
-
+	dav_include_files();
 	require_once(__DIR__ . "/database-init.inc.php");
 
 	$dbstatus = dav_check_tables();

dav/wdcal.css

@@ -10,4 +10,34 @@ div.colorPicker-picker { display: inline-block; }
 .ui-datepicker th { padding: 10px 2px; }
 .ui-datepicker select.ui-datepicker-year { min-width: 0; width: 50px !important; }
 #cal_start_time, #cal_end_time { width: 5em; margin-left: 1em; }
-#cal_start_date, #cal_end_date { width: 6em;}
+#cal_start_date, #cal_end_date { width: 6em;}
+
+
+label.block {
+	background: none repeat scroll 0 0 #CCCCCC;
+	border: 1px solid #EEEEEC;
+	box-shadow: 3px 3px 5px 0 #111111;
+	color: #111111;
+	display: inline-block;
+	font-size: small;
+	margin: 0 10px 1em 0;
+	padding: 3px 5px;
+	width: 38%;
+	vertical-align: top;
+}
+
+label.plain {
+	background: none;
+	border: none;
+	box-shadow: none;
+	color: black;
+	display: inline;
+	margin: 0;
+	padding: 0;
+}
+
+.rec_exceptions { display: inline-block; }
+.rec_exceptions_holder { display: inline-block; }
+.rec_exceptions .remover { }
+#rec_until_count { width: 50px; }
+#rec_until_date { width: 100px; }