83 lines
2.2 KiB
Nix
83 lines
2.2 KiB
Nix
{ config, lib, pkgs, ... }:
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{
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krebs.go = {
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enable = true;
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};
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services.nginx = {
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enable = true;
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virtualHosts.go = {
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locations."/".extraConfig = ''
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proxy_set_header Host go.lassul.us;
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proxy_pass http://localhost:1337;
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'';
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serverAliases = [
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"go.lassul.us"
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];
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};
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};
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krebs.htgen.go = {
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port = 3333;
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script = ''. ${pkgs.writeDash "go" ''
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find_item() {
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if test ''${#1} -ge 7; then
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set -- "$(find "$STATEDIR/items" -mindepth 1 -maxdepth 1 \
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-regex "$STATEDIR/items/$1[0-9A-Za-z]*$")"
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if test -n "$1" && test $(echo "$1" | wc -l) = 1; then
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echo "$1"
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return 0
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fi
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fi
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return 1
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}
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STATEDIR=$HOME
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mkdir -p "$STATEDIR/items"
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case "$Method $Request_URI" in
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"GET /"*)
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if item=$(find_item "''${Request_URI#/}"); then
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uri=$(cat "$item")
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printf 'HTTP/1.1 302 Found\r\n'
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printf 'Content-Type: text/plain\r\n'
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printf 'Connection: closed\r\n'
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printf 'Location: %s\r\n' "$uri"
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printf '\r\n'
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exit
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fi
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;;
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"POST /")
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uri=$(mktemp -t htgen.$$.content.XXXXXXXX)
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trap 'rm $uri >&2' EXIT
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head -c "$req_content_length" \
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| grep -Eo 'https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)' \
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| head -1 \
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> $uri
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sha256=$(sha256sum -b "$uri" | cut -d\ -f1)
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base32=$(${pkgs.nixStable}/bin/nix-hash --to-base32 --type sha256 "$sha256")
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item="$STATEDIR/items/$base32"
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ref="http://$req_host/$base32"
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if ! test -e "$item"; then
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mkdir -v -p "$STATEDIR/items" >&2
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cp -v $uri "$item" >&2
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fi
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base32short=$(echo "$base32" | cut -b-7)
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if item=$(find_item "$base32short"); then
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ref="http://$req_host/$base32short"
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fi
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printf 'HTTP/1.1 200 OK\r\n'
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printf 'Content-Type: text/plain; charset=UTF-8\r\n'
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printf 'Connection: close\r\n'
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printf '\r\n'
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printf '%s\n' "$ref"
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exit
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;;
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esac
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''}'';
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};
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}
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