httpd

#!/bin/bash

[ "$#" -eq 0 ] && exec nc -klp 8080 -e "$0 serve"

IFS="$IFS"$'\r'

read -r get file http

if ! [ -e ".$file" ]; then
    printf "$http 404 Not found\\r\\n"
elif ! [ -r ".$file" ]; then
    printf "$http 403 Access denied\\r\\n"
elif [ -d ".$file" ]; then
    printf "$http 200 OK\\r\\n\\r\\n"
    (
        cd ".$file"
        echo '<pre>'
        for i in *; do
            if [ -d "$i" ]; then
                stat --printf='<a href="%n/">%n/</a><br>' "$i"
            else
                stat --printf='<a href="%n">%n</a>\t%s bytes<br>' "$i"
            fi
        done
        echo '</pre>'
    )
else
    printf "$http 200 OK\\r\\n\\r\\n"
    exec cat ".$file"
fi