# FreedomBox/Manual/Radicale

## Calendar and Addressbook (Radicale)

With Radicale, you can synchronize your personal calendars, ToDo lists, and addressbooks with your various computers, tablets, and smartphones, and share them with friends, without letting third parties know your personal schedule or contacts.

### Why should I run Radicale?

Using Radicale, you can get rid of centralized services like Google Calendar or Apple Calendar (iCloud) data mining your events and social connections.

### How to setup Radicale?

First, the Radicale server needs to be activated on your box.

- Within Plinth

  1. select Applications

  2. go to Calendar and Addressbook (Radicale) and

  3. install the application. After the installation is complete, make sure the application is marked "enabled" in the FreedomBox interface. Enabling the application launches the Radicale CalDAV/CardDAV server.

  4. define the access rights:

     - Only the owner of a calendar/addressbook can view or make changes

     - Any user can view any calendar/addressbook, but only the owner can make changes

     - Any user can view or make changes to any calendar/addressbook

Note, that only users with a FreedomBox login can access Radicale.

Radicale-Plinth.png

If you want to share a calendar with only some users, the simplest approach is to create an additional user-name for these users and to share that user-name and password with them.

Radicale does not have a user interface. An external supported client application is needed.

Now open your client application to create new calendar and address books that will use your FreedomBox and Radicale server. The Radicale website provides an overview of supported clients, but do not use the URLs described there; FreedomBox uses another setup, follow this manual. Below are the steps for two examples:

- Example of setup with Evolution client:

  - Calendar

    1. Create a new calendar

    2. For "Type," select "CalDAV"

    3. When "CalDAV" is selected, additional options will appear in the dialogue window.

    4. URL: `https://`IP-address-or-domain-for-your-server`/radicale/`user`/`contact-file-name`.ics/`. Items in italics need to be changed to match your settings.

       - note the trailing `/` in the path, it is important.

    5. Enable "Use a secure connection."

    6. Name the calendar

       Radicale-Evolution-Docu.png

  - TODO/Tasks list: Adding a TODO/Tasks list is basically the same as a calendar.

  - Contacts

    - Follow the same steps described above and replace CalDAV with WebDAV. The extension of the address book will be .vcf.

### Synchronizing with your Android phone

There are various Apps that allow integration with the Radicale server. This example uses DAVdroid, which is available e.g. on F-Droid. If you intend to use ToDo-Lists as well, the compatible app OpenTasks has to be installed first.

Follow these steps for setting up your account with the Radicale server running on your FreedomBox.

1. Install DAVdroid

2. Create a new account on DAVdroid by clicking on the floating + button.

3. Select the second option as shown in the first figure below and enter the base url as (see the first screenshot below). DAVdroid will be able to discover both CalDAV and WebDAV accounts for the user.

4. Follow this video from DAVdroid FAQ to learn how to migrate your existing contacts to Radicale.

Synchronizing contacts

1. Click on the hamburger menus of CalDAV and CardDAV and select either "Refresh ..." in case of existing accounts or "Create ..." in case of new accounts (see the second screenshot below).

2. Check the checkboxes for the address books and calendars you want to synchronize and click on the sync button in the header. (see the third screenshot below)

DAVdroid account setup DAVdroid refresh DAVdroid account sync

### Advanced Users

#### Sharing resources

Above was shown an easy way to create a resource for a group of people by creating a dedicated account for all. Here will be described an alternative method where two users `User1` and `User2` are granted access to a calendar. This requires SSH-access to the FreedomBox.

1. create a file `/etc/radicale/rights`

   -     [friends_calendar]
         user: ^(User1|User2)$
         collection: ^.*/calendar_of_my_friends.ics$
         permission: rw

         # Give write access to owners
         [owner-write]
         user: .+
         collection: ^%(login)s/.+$
         permission: rw

   - `[friends_calendar]` is just an identifier, can be any name.

   - The `[owner-write]` section makes sure that owners have access to their own files

2. edit file `/etc/radicale/config` and make the following changes in section `[rights)`

   -     [rights]
         type = from_file
         file = /etc/radicale/rights

3. Restart the radicale server or the FreedomBox

#### Importing files

If you are using a contacts file exported from another service or application, it should be copied to: /var/lib/radicale/collections/user/contact file name.vcf.

#### Installing Radicale on ''testing'' version of Freedombox

Radicale is currently not included in the testing version of Freedombox, but can be installed by temporarily using files from the unstable version. Use SSH to connect to your Freedombox:

-     ssh username@freedombox.local

Then edit the sources for the Freedombox software repositories:

-     sudo apt edit-sources

This will open a command line text editor. Edit the list as seen below. Add one line with the unstable sources and disable the other sources by turning them into comments by adding # in front:

-         deb http://deb.debian.org/debian unstable main

          #deb http://deb.debian.org/debian testing main
          #deb-src http://deb.debian.org/debian testing main

          #deb http://deb.debian.org/debian testing-updates main
          #deb-src http://deb.debian.org/debian testing-updates main

          #deb http://security.debian.org/debian-security/ testing/updates main
          #deb-src http://security.debian.org/debian-security/ testing/updates main

After saving this file, refresh the sources:

-     sudo apt update

Then you may install Radicale from Plinth.

Afterwards, reverse the changes to the software sources list so automatic updates may be processed properly - important for the security of your Freedombox.

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