[Resolved] Way to pass dynamic arguments to game executable

Support
1

I’m trying to get maplestory worlds working, and the main pain point is that it requires a link with a token that is regenerated every time. I can paste the link from the browser inspect log in the arguments field, but the next day the token expires so then I have to fetch a new link.

I currently worked around this by adding a launcher script that does this:

#!/usr/bin/env bash
set -euxo pipefail
game=$(lutris -l 2>/dev/null | cut -d"|" -f3 | grep -o "maplestory-worlds" || (echo "Failed to find game; exiting"; exit 1))

notify-send "NGM Launcher" "Launching ${game} with link: $1"

configfile=$(find ~/.config/lutris/games -name 'maplestory-worlds-*' | head -n1)

yq -i -y ".game.args=\"${1}\"" "${configfile}" 3>&1 1>&2 2>&3 | xargs -0 -I {} notify-send "Error" "{}"

env LUTRIS_SKIP_INIT=1 lutris lutris:rungame/"${game}"

Which edits the lutris configfile in-place. This is then called from firefox by registering a desktop file with xdg-mime that passes the link to this script.

My question is basically just: is there a better way to accomplish this? I’ve thought about making a batch script on the windows side instead which does essentially the same thing, but that would be just that: the same thing.

Of course, I tried adding a bash variable as “arguments”, but it doesn’t expand, sadly.

2

how about an game specific prefix_command?
it is run with the commandline that lutris otherwise would execute itself as args.
it would be easy to get the needed token in the script and amend the commandline.

3

How would that work exactly? Does the arguments field expand windows variables?

I tried using the batch file which reads the link from a file that my bash script writes, but that didn’t work as the batch file is called with wine cmd /c, which fails silently.

4

This is an basic example of what i am thinking of:

#!/bin/bash
set -euxo pipefail
DOMAIN="example.com" # Replace it with the URL where you get the token/URL whatever
cookiefile=$(mktemp)
echo '# Custom cookiefile since curl can't read sqlite3 files (yet)'
sqlite3 -separator $'\t' .mozilla/firefox/otmmx9nf.default-release/cookies.sqlite "SELECT host, case substr(host,1,1)='.' when 0 then 'FALSE' else 'TRUE' end, path, case isSecure when 0 then 'FALSE' else 'TRUE' end, expiry, name, value FROM moz_cookies WHERE host = '$DOMAIN';">>"$cookiefile"
token=$(curl --silent --cookie "$cookiefile" https://example.com/URLTOGETTOKEN | PROCESSING)
rm "$cookiefile"
"$@" $token

I wrapped the $@ in quotes to protect spaces in the argument list.
The complete commandline run by lutris would look like this:
PATH/TO/SCRIPT WINEPATH /path/to/exetutable ARG1 ARG2 …

5

Aah yes, I got it working by calling exec "$@" "${link}" in the command prefix script and I add the link as environment var from my .desktop file.

Thanks!