Zip files extracted to external storage are not showing up in OwnCloud Front End.

[lukaszkaluznybrag]

Steps to reproduce

1. Mount external storage (in my case it is just path for the folder, e.g. /owncloud/storage)
2. Install Extract App
3. Upload any zip file to mounted external storage
4. Extract zip file using web interface
5. Files has been extracted without errors. I can find extracted files on the server but they are not showing up on the Owncloud web interface (we are not using app, so I cannot to check from the app perspective)
6. From the server (e.g. SSH session) create any file in the same folder than you extracted files.
7. New files/folders are showing up.

Expected behaviour

Files/folders are showing up immediately after extracted, no matter if it is Owncloud storage or external storage.

Actual behaviour

It looks like files/folders extracted on external storage are not synchronized until any changes will be made directly on the external storage. I had and I still have set "Check for changes: Once every direct access".
What I tried already:

• add / modify files in the same external storage folder using Owncloud web interface - no changes, files still not showing up
• add file in the same folder using SSH session - files showed up
• modify files in the same folder using SSH session - no changes, files still not showing up
• extract files in Owncloud storage - files shows immediately
• wait few days to sync - no changes, files still not showing up
• tried to find any related logs - no error / warning logs related with this issue are generated during the issue.

Server configuration

Operating system: RedHat 8, but we are hosting Owncloud using docker image: owncloud/server:10.14

Web server: as in owncloud/server:10.14

Database: as in owncloud/server:10.14

PHP version: as in owncloud/server:10.14

ownCloud version: 10.14

Updated from an older ownCloud or fresh install: Updated from 10.13

Where did you install ownCloud from:

Signing status (ownCloud 9.0 and above): ?

Login as admin user into your ownCloud and access 
http://example.com/index.php/settings/integrity/failed 
paste the results into https://gist.github.com/ and puth the link here.

No errors have been found.

The content of config/config.php:

Log in to the web-UI with an administrator account and click on
'admin' -> 'Generate Config Report' -> 'Download ownCloud config report'
This report includes the config.php settings, the list of activated apps
and other details in a well sanitized form.

or 

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your ownCloud installation folder

*ATTENTION:* Do not post your config.php file in public as is. Please use one of the above
methods whenever possible. Both, the generated reports from the web-ui and from occ config:list
consistently remove sensitive data. You still may want to review the report before sending.
If done manually then it is critical for your own privacy to dilligently
remove *all* host names, passwords, usernames, salts and other credentials before posting.
You should assume that attackers find such information and will use them against your systems.

List of activated apps:

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your ownCloud installation folder.

Are you using external storage, if yes which one: local

Are you using encryption: yes/no

Are you using an external user-backend, if yes which one: ActiveDirectory

LDAP configuration (delete this part if not used)

With access to your command line run e.g.:
sudo -u www-data php occ ldap:show-config
from within your ownCloud installation folder

Without access to your command line download the data/owncloud.db to your local
computer or access your SQL server remotely and run the select query:
SELECT * FROM `oc_appconfig` WHERE `appid` = 'user_ldap';


Eventually replace sensitive data as the name/IP-address of your LDAP server or groups.

Client configuration

Browser: Latest Edge / Chrome

Operating system: Windows 10 / Windows 11

Logs

Web server error log

Insert your webserver log here

ownCloud log (data/owncloud.log)

Insert your ownCloud log here

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log 
c) ...

[DeepDiver1975]

4. Extract zip file using web interface

This is done with https://marketplace.owncloud.com/apps/extract I assume ....

[lukaszkaluznybrag]

@DeepDiver1975, yes. I forgot to add link for the app. It works on the local storage and does not work on the external storage, I guess that the core issue may be with the synchronizing external storage data with the Owncloud, so I decided to create issue here.

[DeepDiver1975]

I had a quick look at the app code and I suspect an issue in the file scan logic which happens in https://github.com/prsnbrg/NextcloudExtract/blob/f1d962888a24e02ab6f47cc0aa5e02806b3b9dc9/lib/Controller/ExtractionController.php#L88

@prsnbrg any idea on what might go wrong? THX a lot

[prsnbrg]

I only have limited time at the moment. Nevertheless, a quick look at the problem.

I have tested the current app version with the external storage SFTP with a localhost connection and everything worked without any problems.

I also activated the local external storage in the config and configured it. The app also works here without any problems. The owner of the local directory is www-data:www-data (Ubuntu 22.04).

I think the problem is the Docker container.
Firstly I thought that the move function for external storages in line ExtractionController.php#L101 is the problem, but the move works corrently - but ownCloud didn't recognize the changes.
An idea for a workaround is to add the following directly after line 101. @lukaszkaluznybrag can you test this?
$scanner = new \OC\Files\Utils\Scanner($this->userId, \OC::$server->getDatabaseConnection(), \OC::$server->getLogger()); $scanner->scan($this->userFolder->getFullPath($NCDestination));

@DeepDiver1975 do you have ideas why ownCloud didn't recognize the changes?
In the next weeks I will do more tests with the docker image.

[DeepDiver1975]

@DeepDiver1975 do you have ideas why ownCloud didn't recognize the changes?

No idea out of the box .... I would require to do some debugging. But it is an interesting finding that this seems to be docker related. THX @prsnbrg