Nextcloud Federation shares cant cant be modified by external nextcloud server while haveing full acess.

[wwwwiii]

Goodmorning,

Am faceing the following isseu.

I have 2 nextcloud servers that are connected with federated sharing. On the main server i deploy de shares to other nextcloud servers.

All the servers and user recieving the share have full access delete, modify execpt resharing.
The users on de nextcloud server that recieve the share are Azure users users connected with saml 2.0.

Even though those users have full acces they can delete files on the federated share. It counts for webgui and desktop client do difference.

Errors am recieving on desktop client;
Server replied ""500 internal server error to delete "https cloud..."

On de federated user that recieves the share from the main server i see the following errors coming by:

Error | files | Backends provided no user object for [email protected]/ |  

Fatal	webdav	OC\User\NoUserException: Backends provided no user object		2020-04-24T09:41:47+0200

When doing an occ files:scan --all on de same server i see those things popping by:
Protocol negotiation failed: NT_status_Connection_reset

ON the main server where federated shares are located i can delete de folders without any problem.
Both server are freshly installed running ubuntu server 18 lts and running nginx newest nextcloud version

[wwwwiii]

Seems to be an nextcloud federation isseu and not sso related

[arjan-s]

I'm having the same issue on my federated share. Files can be uploaded, downloaded and modified, just not deleted.

[files] Error: Backends provided no user object for [email protected]/

DELETE /remote.php/dav/files/arjan/NAS/test/README.txt
from xxx.xxx.xxx.xxx by arjan at 2020-07-08T20:43:07+00:00

[webdav] Fatal: OC\User\NoUserException: Backends provided no user object at <<closure>>

 0. <<closure>>
    OC\Files\Node\Root->getUserFolder("[email protected]/")
 1. /usr/share/webapps/nextcloud/lib/private/Files/Node/LazyRoot.php line 65
    call_user_func_array([OC\Files\Node\Root {},"getUserFolder"], ["[email protected]/"])
 2. /usr/share/webapps/nextcloud/lib/private/Files/Node/LazyRoot.php line 282
    OC\Files\Node\LazyRoot->__call("getUserFolder", ["[email protected]/"])
 3. /usr/share/webapps/nextcloud/apps/files_trashbin/lib/Storage.php line 142
    OC\Files\Node\LazyRoot->getUserFolder("[email protected]/")
 4. /usr/share/webapps/nextcloud/apps/files_trashbin/lib/Storage.php line 182
    OCA\Files_Trashbin\Storage->shouldMoveToTrash("test/README.txt")
 5. /usr/share/webapps/nextcloud/apps/files_trashbin/lib/Storage.php line 100
    OCA\Files_Trashbin\Storage->doDelete("test/README.txt", "unlink")
 6. /usr/share/webapps/nextcloud/lib/private/Files/View.php line 1162
    OCA\Files_Trashbin\Storage->unlink("test/README.txt")
 7. /usr/share/webapps/nextcloud/lib/private/Files/View.php line 716
    OC\Files\View->basicOperation("unlink", "/NAS/test/README.txt", ["delete"])
 8. /usr/share/webapps/nextcloud/apps/dav/lib/Connector/Sabre/File.php line 448
    OC\Files\View->unlink("/NAS/test/README.txt")
 9. /usr/share/webapps/nextcloud/3rdparty/sabre/dav/lib/DAV/Tree.php line 179
    OCA\DAV\Connector\Sabre\File->delete()
10. /usr/share/webapps/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php line 287
    Sabre\DAV\Tree->delete("files/arjan/NAS ... t")
11. <<closure>>
    Sabre\DAV\CorePlugin->httpDelete(Sabre\HTTP\Reque ... "}, Sabre\HTTP\Response {})
12. /usr/share/webapps/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php line 105
    call_user_func_array([Sabre\DAV\CorePlugin {},"httpDelete"], [Sabre\HTTP\Requ ... }])
13. /usr/share/webapps/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 479
    Sabre\Event\EventEmitter->emit("method:DELETE", [Sabre\HTTP\Requ ... }])
14. /usr/share/webapps/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php line 254
    Sabre\DAV\Server->invokeMethod(Sabre\HTTP\Reque ... "}, Sabre\HTTP\Response {})
15. /usr/share/webapps/nextcloud/apps/dav/lib/Server.php line 319
    Sabre\DAV\Server->exec()
16. /usr/share/webapps/nextcloud/apps/dav/appinfo/v2/remote.php line 35
    OCA\DAV\Server->exec()
17. /usr/share/webapps/nextcloud/remote.php line 165
    require_once("/usr/share/weba ... p")

DELETE /remote.php/dav/files/arjan/NAS/test/README.txt
from xxx.xxx.xxx.xxx by arjan at 2020-07-08T20:43:07+00:00

Same issue here btw: #19647

[szaimen]

Is this Issue still valid in NC21.0.2? If not, please close this issue. Thanks! :)

[wwwwiii]

Not sure if it still is an issue. I made a manuel solution fo this. Ticket can be closed

[k00ni]

I made a manuel solution fo this.

How did you solve it?

[wwwwiii]

@k00ni I ditched the whole federation stuff. And synced nextcloud to a smb folder with the client. After that i created a manuel service.
The second server was is the same netwerk as the smb share. on that server am using the external file share plugin.

[wwwwiii]

stable for for over a year bassicly

[wwwwiii]

is not meant the be used that way but if nextcloud doesnt come with a better solution. This wil be my way.

I have one main server like this and 2 member servers