* Skip null groups in group manager (#26871)
* Skip null groups in group manager
* Also skip null groups in group manager's search function
* Add more group null checks in sharing code
* Add unit tests for null group safety in group manager
* Add unit tests for sharing code null group checks
* Added tests for null groups handling in sharing code
* Ignore moveShare optional repair in mount provider
In some cases, data is inconsistent in the oc_share table due to legacy
data. The mount provider might attempt to make it consistent but if the
target group does not exist any more it cannot work. In such case we
simply ignore the exception as it is not critical. Keeping the
exception would break user accounts as they would be unable to use
their filesystem.
* Adjust null group handing + tests
* Fix new group manager tests
Signed-off-by: Morris Jobke <hey@morrisjobke.de>
In some situations, a group share is created before a user share, and
the recipient renamed the received share before the latter is created.
In this situation, the "file_target" was already modified and the second
created share must align to the already renamed share.
To achieve this, the MountProvider now groups only by "item_source"
value and sorts by share time. This makes it so that the least recent
share is selected as super-share and its "file_target" value is then
adjusted in all grouped shares.
This fixes the issue where this situation would have different
"file_target" values resulting in two shared folders appearing instead
of one.
