Cannot decrypt file but encryption is not enabled and file is not shared.

[m1raculix]

Describe the bug DecryptionFailedException Cannot decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you. Error while generating metadata for fileid 159215

sudo -u www-nextcloud php occ encryption:status

• enabled: false
• defaultModule: OC_DEFAULT_MODULE

System

• App version: 1.29.0
• Nextcloud version: 29.0.2
• PHP version: 8.1
• Environment: Debian 12 on Proxmox, Nginx, PHP-FPM
• ocrmypdf version: 14.0.1+dfsg1-1

How to reproduce

Steps to reproduce the behavior:

1. Upload a PDF which triggers the configured flow
2. Encryption is disables, file is readable by user
3. Flow is configured at the user who uploaded the file.
4. Neither file nor folder is shared
5. See error

Screenshots

If applicable, add screenshots to help explain your problem.

Server log

{"reqId":"NUmcOxK16KqKD9pPua6q","level":2,"time":"2024-06-11T20:03:31+02:00","remoteAddr":"","user":"--","app":"no app in context","method":"","url":"--","message":"Error while generating metadata for fileid 159272","userAgent":"--","version":"29.0.2.2","exception":{"Exception":"OC\Encryption\Exceptions\DecryptionFailedException","Message":"Cannot decrypt this file, probably this is a shared file. Please ask the file owner to reshare the file with you.","Code":0,"Trace":[{"file":"/var/www/nextcloud/lib/private/Files/Stream/Encryption.php","line":517,"function":"decrypt","class":"OCA\Encryption\Crypto\Encryption","type":"->","args":[" sensitive parameters replaced "]},{"file":"/var/www/nextcloud/lib/private/Files/Stream/Encryption.php","line":316,"function":"readCache","class":"OC\Files\Stream\Encryption","type":"->"},{"function":"stream_read","class":"OC\Files\Stream\Encryption","type":"->"},{"file":"/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Encryption.php","line":240,"function":"stream_get_contents"},{"file":"/var/www/nextcloud/lib/private/Files/Storage/Wrapper/Wrapper.php","line":253,"function":"file_get_contents","class":"OC\Files\Storage\Wrapper\Encryption","type":"->"},{"file":"/var/www/nextcloud/lib/private/Files/View.php","line":1171,"function":"file_get_contents","class":"OC\Files\Storage\Wrapper\Wrapper","type":"->"},{"file":"/var/www/nextcloud/lib/private/Files/View.php","line":584,"function":"basicOperation","class":"OC\Files\View","type":"->"},{"file":"/var/www/nextcloud/lib/private/Files/Node/File.php","line":54,"function":"file_get_contents","class":"OC\Files\View","type":"->"},{"file":"/var/www/nextcloud/apps/photos/lib/Listener/SizeMetadataProvider.php","line":64,"function":"getContent","class":"OC\Files\Node\File","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/ServiceEventListener.php","line":86,"function":"handle","class":"OCA\Photos\Listener\SizeMetadataProvider","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":230,"function":"__invoke","class":"OC\EventDispatcher\ServiceEventListener","type":"->"},{"file":"/var/www/nextcloud/3rdparty/symfony/event-dispatcher/EventDispatcher.php","line":59,"function":"callListeners","class":"Symfony\Component\EventDispatcher\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":86,"function":"dispatch","class":"Symfony\Component\EventDispatcher\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/EventDispatcher/EventDispatcher.php","line":98,"function":"dispatch","class":"OC\EventDispatcher\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/FilesMetadata/FilesMetadataManager.php","line":114,"function":"dispatchTyped","class":"OC\EventDispatcher\EventDispatcher","type":"->"},{"file":"/var/www/nextcloud/core/BackgroundJobs/GenerateMetadataJob.php","line":107,"function":"refreshMetadata","class":"OC\FilesMetadata\FilesMetadataManager","type":"->"},{"file":"/var/www/nextcloud/core/BackgroundJobs/GenerateMetadataJob.php","line":99,"function":"scanFolder","class":"OC\Core\BackgroundJobs\GenerateMetadataJob","type":"->"},{"file":"/var/www/nextcloud/core/BackgroundJobs/GenerateMetadataJob.php","line":99,"function":"scanFolder","class":"OC\Core\BackgroundJobs\GenerateMetadataJob","type":"->"},{"file":"/var/www/nextcloud/core/BackgroundJobs/GenerateMetadataJob.php","line":88,"function":"scanFolder","class":"OC\Core\BackgroundJobs\GenerateMetadataJob","type":"->"},{"file":"/var/www/nextcloud/core/BackgroundJobs/GenerateMetadataJob.php","line":74,"function":"scanFilesForUser","class":"OC\Core\BackgroundJobs\GenerateMetadataJob","type":"->"},{"file":"/var/www/nextcloud/lib/public/BackgroundJob/Job.php","line":80,"function":"run","class":"OC\Core\BackgroundJobs\GenerateMetadataJob","type":"->"},{"file":"/var/www/nextcloud/lib/public/BackgroundJob/TimedJob.php","line":102,"function":"start","class":"OCP\BackgroundJob\Job","type":"->"},{"file":"/var/www/nextcloud/lib/public/BackgroundJob/TimedJob.php","line":92,"function":"start","class":"OCP\BackgroundJob\TimedJob","type":"->"},{"file":"/var/www/nextcloud/cron.php","line":176,"function":"execute","class":"OCP\BackgroundJob\TimedJob","type":"->"}],"File":"/var/www/nextcloud/apps/encryption/lib/Crypto/Encryption.php","Line":352,"Hint":"Diese Datei kann nicht entschlüsselt werden, es handelt sich wahrscheinlich um eine geteilte Datei. Bitte kontaktiere den Eigentümer der Datei und bitte darum, die Datei noch einmal mit dir zu teilen.","message":"Error while generating metadata for fileid 159272","exception":[],"CustomMessage":"Error while generating metadata for fileid 159272"},"id":"666892aa7180f"}

Paste relevant server log lines here. Make sure to trim sensitive information.

Browser log

not applicable

Additional context

I uploaded this file after disabling encryption, before, I found out that encryption was enabled, but never used it. I have a quite old installation, running since 2016.

[R0Wi]

Are you sure this error is related to the OCR workflow? I can only see the Photos App in the stacktrace, I'm not able to see any reference to this apps code.

Did you try disabling the OCR app and try to reproduce the issue?

[m1raculix]

You are right, its not an OCR issue, OCR works like a charm! Thanks for developing it!

[R0Wi]

Glad to hear that you like the app. Cheers :-)