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Xandikos is a lightweight yet complete CardDAV/CalDAV server that backs onto a Git repository.

Xandikos (Ξανδικός or Ξανθικός) takes its name from the name of the March month
in the ancient Macedonian calendar, used in Macedon in the first millennium BC.

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.. image:: logo.png
   :alt: Xandikos logo
   :width: 200px
   :align: center

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Extended documentation can be found `on the home page <https://www.xandikos.org/docs/>`_.

Implemented standards
=====================

The following standards are implemented:

- :RFC:`4918`/:RFC:`2518` (Core WebDAV) - *implemented, except for COPY/MOVE/LOCK operations*
- :RFC:`4791` (CalDAV) - *fully implemented*
- :RFC:`6352` (CardDAV) - *fully implemented*
- :RFC:`5397` (Current Principal) - *fully implemented*
- :RFC:`3253` (Versioning Extensions) - *partially implemented, only the REPORT method and {DAV:}expand-property property*
- :RFC:`3744` (Access Control) - *partially implemented*
- :RFC:`5995` (POST to create members) - *fully implemented*
- :RFC:`5689` (Extended MKCOL) - *fully implemented*
- :RFC:`6578` (Collection Synchronization for WebDAV) - *fully implemented*

The following standards are not implemented:

- :RFC:`6638` (CalDAV Scheduling Extensions) - *not implemented*
- :RFC:`7809` (CalDAV Time Zone Extensions) - *not implemented*
- :RFC:`7529` (WebDAV Quota) - *not implemented*
- :RFC:`4709` (WebDAV Mount) - `intentionally <https://github.com/jelmer/xandikos/issues/48>`_ *not implemented*
- :RFC:`5546` (iCal iTIP) - *not implemented*
- :RFC:`4324` (iCAL CAP) - *not implemented*
- :RFC:`7953` (iCal AVAILABILITY) - *not implemented*
See `DAV compliance <notes/dav-compliance.rst>`_ for more detail on specification compliancy.

Limitations
-----------

- No multi-user support
- No support for CalDAV scheduling extensions

Supported clients
=================

Xandikos has been tested and works with the following CalDAV/CardDAV clients:

- `Vdirsyncer <https://github.com/pimutils/vdirsyncer>`_
- `caldavzap <https://www.inf-it.com/open-source/clients/caldavzap/>`_/`carddavmate <https://www.inf-it.com/open-source/clients/carddavmate/>`_
- `evolution <https://wiki.gnome.org/Apps/Evolution>`_
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- `DAVx5 <https://www.davx5.com/>`_ (formerly DAVDroid)
- `sogo connector for Icedove/Thunderbird <http://v2.sogo.nu/english/downloads/frontends.html>`_
- `aCALdav syncer for Android <https://play.google.com/store/apps/details?id=de.we.acaldav&hl=en>`_
- `pycardsyncer <https://github.com/geier/pycarddav>`_
- `akonadi <https://community.kde.org/KDE_PIM/Akonadi>`_
- `CalDAV-Sync <https://dmfs.org/caldav/>`_
- `CardDAV-Sync <https://dmfs.org/carddav/>`_
- `Calendarsync <https://play.google.com/store/apps/details?id=com.icalparse>`_
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- `Tasks <https://github.com/tasks/tasks/tree/main/app/src/main/java/org/tasks/caldav>`_
- `AgendaV <http://agendav.org/>`_
- `CardBook <https://gitlab.com/cardbook/cardbook/>`_
- `homeassistant's CalDAV integration <https://www.home-assistant.io/integrations/caldav/>`_

Dependencies
============

At the moment, Xandikos supports Python 3 (see pyproject.toml for specific version)
as well as Pypy 3. It also uses `Dulwich <https://github.com/dulwich/dulwich>`_,
`Jinja2 <http://jinja.pocoo.org/>`_,
`icalendar <https://github.com/collective/icalendar>`_, and
`defusedxml <https://github.com/tiran/defusedxml>`_.

E.g. to install those dependencies on Debian:

.. code:: shell

  sudo apt install python3-dulwich python3-defusedxml python3-icalendar python3-jinja2

Or to install them using pip:

.. code:: shell

  python setup.py develop

Docker
------

A Dockerfile is also provided; see the comments on the top of the file for
configuration instructions. The docker image is regularly built and
published at ``ghcr.io/jelmer/xandikos``. See 
``examples/docker-compose.yml`` and the 
`man page <https://www.xandikos.org/manpage.html>`_ for more info.
Xandikos can either directly listen on a plain HTTP socket, or it can sit
behind a reverse HTTP proxy.

To run a standalone (no authentication) instance of Xandikos,
with a pre-created calendar and addressbook (storing data in *$HOME/dav*):

.. code:: shell

  ./bin/xandikos --defaults -d $HOME/dav

A server should now be listening on `localhost:8080 <http://localhost:8080/>`_.

Note that Xandikos does not create any collections unless --defaults is
specified. You can also either create collections from your CalDAV/CardDAV client,
or by creating git repositories under the *contacts* or *calendars* directories
it has created.
The easiest way to run Xandikos in production is by running a reverse HTTP proxy
like Apache or nginx in front of it.
The xandikos script can either listen on the local host on a particular port, or
it can listen on a unix domain socket.
For example init system configurations, see examples/.
Client instructions
===================

Some clients can automatically discover the calendars and addressbook URLs from
a DAV server (if they support RFC:`5397`). For such clients you can simply
provide the base URL to Xandikos during setup.

Clients that lack such automated discovery require the direct URL to a calendar
or addressbook. In this case you should provide the full URL to the calendar or
addressbook; if you initialized Xandikos using the ``--defaults`` argument
mentioned in the previous section, these URLs will look something like this::

  http://dav.example.com/user/calendars/calendar

  http://dav.example.com/user/contacts/addressbook


Contributing
============

Contributions to Xandikos are very welcome. If you run into bugs or have
feature requests, please file issues `on GitHub
<https://github.com/jelmer/xandikos/issues/new>`_. If you're interested in
contributing code or documentation, please read `CONTRIBUTING
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<CONTRIBUTING.md>`_. Issues that are good for new contributors are tagged
`new-contributor <https://github.com/jelmer/xandikos/labels/new-contributor>`_
on GitHub.

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There is a *#xandikos* IRC channel on the `OFTC <https://www.oftc.net/>`_
IRC network, and a `Xandikos <https://groups.google.com/forum/#!forum/xandikos>`_
mailing list.