• wolo@lemmy.blahaj.zone
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    8 months ago

    my website’s backend is made with bash, it calls make for every request and it probably has hundreds of remote arbitrary code execution bugs that will get me pwned someday, it’s great

    edit: to clarify, it uses a rust program i made to expose the bash scripts as http endpoints, i’m not crazy enough to implement http in bash

    it behaves like a static file server, but if a file has the others-execute permission bit set it executes the file instead of reading it

    it’s surprisingly nice for prototyping since you can just write a cli program and it’s automatically available over http too

      • wolo@lemmy.blahaj.zone
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        8 months ago

        i thought it was neat how php lets you write your website’s logic with the same directory tree pattern that clients consume it from, but i didn’t want to learn php so i made my own, worse version

    • bdonvr@thelemmy.club
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      8 months ago

      I designed a chip architecture that runs bash code on silicon.

      I reimplemented x86 assembly in purely bash script.

    • gandalf_der_12te@feddit.de
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      8 months ago

      you do realize that you can just use Apache instead of writing your own rust program for this, as this is more or less the CGI standard?

      • wolo@lemmy.blahaj.zone
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        8 months ago

        I know about the CGI standard, but mine does things a little differently (executable files don’t just render pages but also handle logging, access control, etc. when put in special positions within a directory), so I still think it was worth the afternoon i spent making it.

  • agilob@programming.dev
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    8 months ago

    Before nginx was a thing, I worked with a guy who forked apache httpd and wrote this blog in C, like, literally embedded html and css inside the server, so when he made a tpyo or was adding another post he had to recompile the source code. The performance was out of this world.

    • Bazsalanszky@lemmy.toldi.eu
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      8 months ago

      This reminds me of one of my older projects. I wanted to learn more about network communications, so I started working on a simple P2P chat app. It wasn’t anything fancy, but I really enjoyed working on it. One challenge I faced was that, at the time, I didn’t know how to listen for user input while handling network communication simultaneously. So, after I had managed to get multiple TCP sockets working on one thread, I thought, why not open another socket for HTTP communication? That way, I could incorporate a fancy web UI instead of just a CLI interface.

      So, I wrote a simple HTTP server, which, in hindsight, might not have been necessary.

    • Schmeckinger@feddit.de
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      8 months ago

      There are a lot of solutions like that in rust. You basically compile the template into your code.

      • voxel@sopuli.xyz
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        8 months ago

        yeah, templates can be parsed at compile time but these frameworks are not embeeding whole fucking prerendered static pages/assets

        • sebsch@discuss.tchncs.de
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          8 months ago

          They are nowadays. Compiling assets and static data into rust and deliver virtual DOM via websocket to the browser is the new cool kid in the corner.

          Have a look at dioxus

    • philm@programming.dev
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      8 months ago

      but effectively it’s bash, I think /bin/sh is a symlink to bash on every system I know of…

      Edit: I feel corrected, thanks for the information, all the systems I used, had a symlink to bash. Also it was not intended to recommend using bash functionality when having a shebang !#/bin/sh. As someone other pointed out, recommendation would be #!/usr/bin/env bash, or !#/bin/sh if you know that you’re not using bash specific functionality.

      • UNWILLING_PARTICIPANT@sh.itjust.works
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        8 months ago

        Wut that is not even the case for Ubuntu. You’re probably thinking of dash example:

        sh -c '[[ true ]] && echo ya' 
        # sh: 1: [[: not found
        
        bash -c '[[ true ]] && echo ya' 
        # ya
        
      • JackbyDev@programming.dev
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        8 months ago

        No no no no no, do not believe this you will shoot yourself in the foot.

        https://wiki.debian.org/Shell

        Beginning with DebianSqueeze, Debian uses Dash as the target of the /bin/sh symlink. Dash lacks many of the features one would expect in an interactive shell, making it faster and more memory efficient than Bash.

        From DebianSqueeze to DebianBullseye, it was possible to select bash as the target of the /bin/sh symlink (by running dpkg-reconfigure dash). As of DebianBookworm, this is no longer supported.

      • MonkderZweite@feddit.ch
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        8 months ago

        Still don’t do this. If you use bash specific syntax with this head, that’s a bashism and causes issues with people using zsh for example. Or with Debian/*buntu, who use dash as init shell.

        Just use #!/bin/bash or #!/usr/bin/env bash if you’re funny.

        • wolo@lemmy.blahaj.zone
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          8 months ago

          #!/bin/bash doesn’t work on NixOS since bash is in the nix store somewhere, #!/usr/bin/env bash resolves the correct location regardless of where bash is

          • JackbyDev@programming.dev
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            8 months ago

            Are there any distos with /usr/bin/env in a different spot? I still believe that’s the best approach for getting bash.

              • MonkderZweite@feddit.ch
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                8 months ago

                I do think a simple symlink is superior to a tool parsing stuff. A shame POSIX choose this approach.

                Still the issue that a posix shell can be on a non-posix system and vice versa. And certificates versus used practice. Btw, isn’t there only one posix certified Linux distro? Was it Suse?

                • MenacingPerson@lemm.ee
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                  8 months ago

                  Posix certification is dumb but posix compliance is nice to ensure some level of compatibility.

                  Symlinks would be pretty bad in the case of nixos. Wouldn’t fit at all