Some servers have non-compliant instance ids (that start with a number)
and thereby make deducing the numeric file id from the full id
unreliable.
To circumvent this problem we retrieve the fileid property from the
server with a PROPFIND.
This restores 2.3 behavior. Some servers reply 404 to GETs and PROPFINDs
to the remote.php/webdav/ url and used to work. Being more picky would
break them.
The assert was made fatal when looking at asserts for #5429#5518
without having a particular problem in mind. Recent reports weakly
suggest that this might lead to occasional crashes for users when
sqlite_close fails in ways that look ignorable.
This is important as a lot of the code would start
to rely in direct access to the client side encryption
and there are different keys for different accounts.
With some firewalls we can't GET /remote.php/webdav/. Here we keep the
GET request to detect shibboleth through the redirect pattern but then
use PROPFIND to figure out the http auth method.
Currently we prefer OAuth to Shibboleth to Basic auth.
This also restores the fallback behavior of assuming basic auth
when no auth type can be determined.
It appears that Qt implementation of the DELETE http request
does not send bodyData, and we need that for Nextcloud.
Currently I changed the http request on the server side
to accept a POST instead of a DELETE, so I can actually
develop.
Also, I already poked the Qt developers that did this code.
Also, commented out the finalization of the decrypt operation
because that was messing with the encryption. There's something
wrong here but I need to get this working and I can fix stuff
later.
For historical reasons CheckServerJob doesn't just check url/ but also
url/owncloud/. However, that means if url/status.php is a 404 and
url/owncloud/status.php is a 404, the user will see the latter url
appear in the error message. That's potentially confusing.
Instead, just show the account url which will be closer to what the
user typed into the account wizard, while being adjusted for protocol
and possible redirects.
