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