Support for bearer authentication

[tobixen]

Depended on by tobixen/calendar-cli#81

[azmeuk]

I confirm that Bearer authentication is not supported yet, and that it would be a nice thing to have.

I let this traceback here so people can google it.

  File "/usr/lib/python3.10/site-packages/caldav/davclient.py", line 362, in principal
    self._principal = Principal(client=self, *largs, **kwargs)
  File "/usr/lib/python3.10/site-packages/caldav/objects.py", line 404, in __init__
    cup = self.get_property(dav.CurrentUserPrincipal())
  File "/usr/lib/python3.10/site-packages/caldav/objects.py", line 175, in get_property
    foo = self.get_properties([prop], **passthrough)
  File "/usr/lib/python3.10/site-packages/caldav/objects.py", line 198, in get_properties
    response = self._query_properties(props, depth)
  File "/usr/lib/python3.10/site-packages/caldav/objects.py", line 142, in _query_properties
    return self._query(root, depth)
  File "/usr/lib/python3.10/site-packages/caldav/objects.py", line 160, in _query
    ret = getattr(self.client, query_method)(
  File "/usr/lib/python3.10/site-packages/caldav/davclient.py", line 410, in propfind
    return self.request(url or self.url, "PROPFIND", props,
  File "/usr/lib/python3.10/site-packages/caldav/davclient.py", line 557, in request
    raise NotImplementedError("Auth method %s not supported yet" % auth_type)
NotImplementedError: Auth method bearer not supported yet

[azmeuk]

I suppose implementing would result in:

• storing a token parameter in DAVClient (alongside with username and password). I think this can be expected that users retrieve the token by their own, and that it is not in the scope of python-caldav
• check wether the server supports the bearer authentication method
• if so, and a token has been provided to the library, add a Authorization header which value is Bearer <TOKEN> where <TOKEN> is the token content.

[tobixen]

Yes - it shouldn't be too difficult, if only having a server to test with. Well, there is always the Google servers :-)

[tobixen]

This won't go into v0.10 I'm afraid.

[azmeuk]

This is fixed by #260

[devmount]

Is connecting to a Google CalDAV calendar with OAuth2 already possible? If yes, is there documentation / an example of how to do so? I would like to use this lib for Google calendars as well. Thanks for the great work so far 🙏🏻

[tobixen]

In theory it should be possible, but there exists no documentation or examples on how to connect to Google (and I don't have time looking into it this week nor next, probably not even this month nor next), and pull request #260 also seem to lack documentation and test code.

https://developers.google.com/calendar/caldav/v2/guide seems to be a relevant resource if you want to give it a go.

[devmount]

I see, thank you for the quick reply anyway! I see if I can get it to work or if I need to use another lib for Google (which I would like to avoid).

[tobixen]

I just had a quick look into the documentation - we're still lacking documentation on how to connect to Google. Did anyone successfully connect to their Google calendar?