Cannot save document from within Collabora that were opened through shared link.

[noikin]

Describe the bug
If office document is open throuht shared link, the document is opened and edited, but can't save (Message "the document can't be saved to storage. Check your permissions or contact the storage server administrator").
If this document opened by user logged in nextcoud (without granting rights to that file!) through shared link, document succsessfully saved.
See logs next.

To Reproduce
Steps to reproduce the behavior:

1. Create test.docx
2. Create shared link with edit rights.
3. Paste and open shared link to another pc/browser, not logged in NC
4. Edit file in Collabora interface. Click Save.
5. Popup message "the document can't be saved to storage. Check your permissions or contact the storage server administrator".

Expected behavior
Document must saved.

Client details:

• Browser chrome 79, Edge
• Device: Windows10

Server details

Operating system:
Debian 10
Web server:
nginx
Database:
MariaDB 10.3.18-MariaDB-0+deb10u1-log
PHP version:
PHP 7.3.11-1~deb10u1
Nextcloud version:
NC 17.0.2
Version of the richdocuments app
Collabora Online 3.5.0
Version of Collabora Online
loolwsd 4.0.8-2 amd64 LibreOffice Online WebSocket Daemon
code-brand 4.0-2 all Collabora Online Development Edition (CODE) branding

Logs

Nextcloud log (data/nextcloud.log)

[index] Error: Exception: Argument 1 passed to OCA\Richdocuments\Service\UserScopeService::setUserScope() must be of the type string, null given, called in /home/alpha/www/apps/richdocuments/lib/Controller/WopiController.php on line 449 at <>

0. /home/alpha/www/lib/private/AppFramework/App.php line 126
   OC\AppFramework\Http\Dispatcher->dispatch(OCA\Richdocument ... {}, "putFile")
1. /home/alpha/www/lib/private/AppFramework/Routing/RouteActionHandler.php line 47
   OC\AppFramework\App::main("OCA\Richdocume ... r", "putFile", OC\AppFramework\ ... {}, {fileId: "6679_o ... "})
2. <>
   OC\AppFramework\Routing\RouteActionHandler->__invoke({fileId: "6679_o ... "})
3. /home/alpha/www/lib/private/Route/Router.php line 297
   undefinedundefinedcall_user_func(OC\AppFramework\ ... {}, {fileId: "6679_o ... "})
4. /home/alpha/www/lib/base.php line 997
   OC\Route\Router->match("/apps/richdocum ... s")
5. /home/alpha/www/index.php line 42
   OC::handleRequest()

POST /index.php/apps/richdocuments/wopi/files/6679_oc86qmy9nngc/contents?access_token=gKFw4iLkfdWdFQy5fCQO4XXpCNO2mtSz&access_token_ttl=&permission=edit
from 192.168.128.106 at 2019-12-25T09:30:42+00:00

[yodatak]

Hi i got the same issue ,
Operating system:
Debian 10
Web server:
nginx
Database:
PG
PHP version:
PHP 7.3.11-1~deb10u1
Nextcloud version:
NC 17.0.2
Version of the richdocuments app
Collabora Online 3.5.0
Version of Collabora Online ( Docker 4.2 snapshot version)
LOOLWSD
master.. (git hash: ce9ec5f2)

LOKit
Collabora Office 6.2-2 (git hash: deaf934)

[yodatak]

I just test the fix of #755 it works !

[t-markmann]

#755 works perfectly, please merge :-)