This plugin makes Radicale use EteSync as the storage module, essentially making Radicale a CalDav/CardDav frontend for EteSync.

For all I can tell, everything works as expected, with the exception of Last-Modified which is not yet implemented and just returns the modification date as "now" (not the end of the world as etag is implemented correctly).

pip install radicale radicale_storage_etesync

This plugin assumes only authenticated users are allowed to connect to Radicale, so make sure to correctly set the Radicale auth backend accordingly. Please refer to the Radicale docs for more information.

You also need to set the storage type to radicale_storage_etesync, and populate the etesync_storage section.

Example config:

[server]
hosts = localhost:5232

[storage]
type = radicale_storage_etesync

[auth]
type = htpasswd
htpasswd_filename = ./htpaswd
htpasswd_encryption = plain

[etesync_storage]
database_filename = ./etesyncache.db
remote_url = https://api.etesync.com/
credentials_filename = ./etesync_creds

In addition to the Radicale config above, you need to have a credentials file at the path specified above that includes the authentication token and the base64 encoded cipher key per allowed user.

Example credentials file:

{
   "users": {
        "[email protected]": {
             "authToken": "c5d796ad113f596bde14c45e5888919f8b4f307a",
             "cipherKey": "ZWFudWhvZXN1bnRoZXN1bnRhb2VodXNudGVvYWh1c25lb3RhaHVzb25lYXR1aGFzb2VudWhhb2VzbnR1aGFlb3N1dGhhZW9zbnR1aAo="
        }
   }
}