POSIX compliant version of launchhelper.sh

launchhelper.sh

#!/bin/sh

#############
# CONSTANTS #
#############

RCUX_NAME='RiotClientUx.exe'
LCUX_NAME='LeagueClientUx.exe'
SCC_SH='syscall_check.sh'


#############
# FUNCTIONS #
#############

die() { # printf style params
    >&2 printf 'ERROR: '
    >&2 printf "${@}"
    >&2 echo
    sleep 5
    exit 1
}

wait_for() { # $1: time, $2: command
    timeout "${1}" sh -c "until ${2}; do \
        sleep 1; \
    done"
}

notify_send_wrapper() { # $1: notify_send_wrapper text
    if command -v 'notify-send'; then
        notify-send \
            'LoL LaunchHelper' \
            "${1}"
    fi
}


########
# MAIN #
########

# call syscall_check
own_dir="$(dirname "$(readlink -f "${0}")")"
if ! [ -x "${own_dir}/${SCC_SH}" ]; then
    die 'Please place this script into the same directory as "%s"!' "${SCC_SH}"
fi
"${own_dir}/${SCC_SH}"

# wait for RiotClientUx or LeagueClientUx to start
notify_send_wrapper "Waiting for ${RCUX_NAME} ... (Step 1/4)"
printf 'Waiting for process of "%s" or "%s" ... ' "${RCUX_NAME}" "${LCUX_NAME}"
wait_for 2m "pidof '${RCUX_NAME}' || pidof '${LCUX_NAME}'" >/dev/null
echo 'OK'

if pidof "${RCUX_NAME}" >/dev/null; then
    # wait for RiotClientUx process to exit
    printf 'Waiting for process of "%s" to exit ... ' "${RCUX_NAME}"
    wait_for 10m "! pidof '${RCUX_NAME}'" >/dev/null
    echo 'OK'
    notify_send_wrapper "${RCUX_NAME} exited (Step 2/4)"

    # find pid of LeagueClientUx process
    printf 'Waiting for process of "%s" ... ' "${LCUX_NAME}"
    lcux_pid=$(wait_for 2m "pidof '${LCUX_NAME}'")
    echo 'OK'

    if [ -z "${lcux_pid}" ]; then
        notify_send_wrapper "${LCUX_NAME} did not spawn in time (ERROR)"
        die 'Could not find processes of "%s"' "${LCUX_NAME}"
    fi

elif lcux_pid=$(pidof "${LCUX_NAME}"); then
    notify_send_wrapper "Skipped waiting for ${RCUX_NAME} (Step 2/4)"

else
    notify_send_wrapper "${RCUX_NAME} or ${LCUX_NAME} did not spawn in time (ERROR)"
    die 'Could not find processes of "%s" or "%s"' "${RCUX_NAME}" "${LCUX_NAME}"

fi

echo "${LCUX_NAME} pid found: ${lcux_pid}"

# find port of LeagueClientUx process
ux_port=$(grep -ao -- '--app-port=[0-9]*' "/proc/${lcux_pid}/cmdline" | grep -o '[0-9]*')

if [ -z "${ux_port}" ]; then
    die 'Could not find port of "%s" process!' "${LCUX_NAME}"
fi

echo "${LCUX_NAME} port found: ${ux_port}"
notify_send_wrapper "Found out about ${LCUX_NAME}, knocking on port ${ux_port} ... (Step 3/4)"

# pause LeagueClientUx process
kill -STOP "${lcux_pid}"

printf 'Waiting for port %s ... ' "${ux_port}"
wait_for 5m "echo 'Q' | openssl s_client -connect ':${ux_port}' >/dev/null 2>&1"
echo 'OK'
notify_send_wrapper "OpenSSL Connection established (Step 4/4)"

# continue LeagueClientUx process
kill -CONT "${lcux_pid}"

# finalize
echo "${LCUX_NAME} continues, my job is done!"

sleep 5

exit 0

Where is the script syscall_check.sh ?

Where is the script syscall_check.sh ?

It's included in the default installation when installed via Lutris. You can find it as a write_file command in the installer script on lutris.net or as a paste on pastebin. However, I'm not sure if the paste is the latest version, but it worked for several people including myself.

Thanks

Where is the script syscall_check.sh ?

It's included in the default installation when installed via Lutris. You can find it as a write_file command in the installer script on lutris.net

Hello, FYI the scripts are no more included in the Lutris installer because it was too difficult to maintain and unreadable.
They are now host here: https://github.com/legluondunet/MyLittleLutrisScripts/tree/master/League%20of%20Legends just for Lutris use.
Could you tell me if the scripts are in their last version, why the launchhelper script I host is different as yours? They are correct?
Thank you for your help.