this post was submitted on 08 Mar 2026
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Show & Tell

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bash-server: A minimal HTTP server that maps URL endpoints to shell commands (github.com)
submitted 3 weeks ago* (last edited 3 weeks ago) by danhab99@programming.dev to c/show_and_tell@programming.dev
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I cannot ever be sure about this but this might have come to me in a dream. I just thought about why it's so hard to implement a web-server in bash, basically all the functionality of the webserver must be implemented in bash but the http handling can be compiled.

This program lets you declare endpoints and map them to shell commands, query args get passed as ENV vars, methods are enforced, body is passed in stdin and the response is the stdout.

I also learned I really like declaring flake.nix files for all my personal projects, I hope it helps you install what I create!

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[–] CameronDev@programming.dev 12 points 2 weeks ago* (last edited 2 weeks ago)

Unauthenticated RCE <3

[–] rimu@piefed.social 8 points 2 weeks ago

[–] sip@programming.dev 8 points 2 weeks ago (1 children)

cgi

[–] purplemonkeymad@programming.dev 2 points 2 weeks ago

Yea have you not be able to do this with Apache etc forever? You can even define the endpoint with a very unix like every endpoint is a file.

On fact was there not even a vulnerability that was caused by the fact the CGI can run bash?

[–] flying_sheep@lemmy.ml 5 points 2 weeks ago

Terrifying

[–] catnip@lemmy.zip 5 points 2 weeks ago

Im using this in prod to host our banking frontend! It works great so far :)

[–] brian@programming.dev 3 points 2 weeks ago

for the common use cases, I imagine you're better off using https://github.com/adnanh/webhook instead. handles security etc. don't think it lets you return responses but at that point you probably want a proper server framework

[–] brian@programming.dev 1 points 2 weeks ago

for the common use cases, I imagine you're better off using https://github.com/adnanh/webhook instead. handles security etc. don't think it lets you return responses but at that point you probably want a proper server framework

[–] brian@programming.dev 1 points 2 weeks ago

for the common use cases, I imagine you're better off using https://github.com/adnanh/webhook instead. handles security etc. don't think it lets you return responses but at that point you probably want a proper server framework

[–] tocano@piefed.social 0 points 2 weeks ago (1 children)

What about request/response headers?

[–] danhab99@programming.dev 2 points 2 weeks ago

Out of scope