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Absolutely this. Even if you had fancy jails or docker setups for each submission, this will be a nightmare to properly handle. Students DOSing each other exactly before the submission deadline, too.

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foggy@lemmy.world ⁨1⁩ ⁨day⁩ ago
I mean just for the love of God don’t spin up something on your company’s infrastructure that accepts file uploads.

Just don’t.

If you’re reading this and going “well, it’s just internal,” or “well, it doesn’t do much it just accepts this exact file type.” My god. Ask your CISA. And if they’re okay with it, cool. That’s on them.

Unless your while business is transferring files, don’t.

And if you’re still confused, the answer is to use another company’s infrastructure for this. Use Azure. Use AWS. Use Google cloud or even g suites. Don’t accept that liability. Let the trillionaires do it.

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- planish@sh.itjust.works ⁨9⁩ ⁨hours⁩ ago
  I mean if you put up an Internet-facing unauthenticated file acceptor it will quickly become stuffed with all sorts of garbage and aspiring malware. You definitely don’t want to hook that up to an untar and exec loop, even with some notion of sandboxing. It will just start mining Bitcoins or sending spam or something.
  
  But if it is built properly, with only authorized users being able to upload stuff, and a basic understanding of not dropping stuff where the web server will happily execute every PHP web shell someone sticks in the slot, and the leverage to threaten people into not uploading pictures of their own or others’ butts or Iron Man (2009), I don’t see why all but the file-uploading professionals should immediately give up.
  
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- sugar_in_your_tea@sh.itjust.works ⁨18⁩ ⁨hours⁩ ago
  You can accept them on internal networks, just have a file size limit and don’t extract them locally, but send to some cloud service for handling. You could even have it work with email attachments if you want.
  
  Basically:
  
  Put file somewhere
  
  Spin up runner
  
  Upload and execute code
  
  Spin down runner either upon success or after a time limit
  
  Send result to the student (if it to took too long, that’s a fail too)
  
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  - foggy@lemmy.world ⁨13⁩ ⁨hours⁩ ago
    My method eliminates waiting to see if your students code runs fast enough. Unless complexity is part of the assignment, I’d still say go for the hash.
    
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