this post was submitted on 22 Sep 2023
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pictrs-safety has been updated to avoid blocking all uploads when scanning workers go offline (github.com)
submitted 1 year ago by [email protected] to c/[email protected]
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Just a quick update for people using pict-rs workers, to grab the latest release, and set the 2 new variables as they want them

SCAN_BYPASS_THRESHOLD (default 10): If this amount of images are waiting for scanning, pictrs-safety will start retuning "OK" for each new scan after that. This will prevent overloaded workers causing all further uploads from bouncing.

MISSING_WORKER_THRESHOLD (default 5): If this amount of seconds have passed since a scanning worker last checked in, start returning "OK" for each new scan after that. This will prevent a crashed worker from causing all images to bounce.

You can set either of these to 0 to turn off their functionality

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[โ€“] [email protected] 1 points 1 year ago

Would this not leave an instance open to attack by uploading a large number of images in extremely quick succession? Meaning that an attacker could upload 1000 images within a second of each other, and some would get through assuming less than nine workers?

[โ€“] [email protected] 1 points 1 year ago

Theoretically yes. If you're concerned about it, one can turn that feature off