valheim-server

#!/bin/bash
cd /opt/valheim
valheim_server="/opt/valheim/valheim_server.x86_64"
valheim_server_pid=-1
SERVER_NAME=${SERVER_NAME:-My Server}
SERVER_PORT=${SERVER_PORT:-2456}
WORLD_NAME=${WORLD_NAME:-Dedicated}
SERVER_PASS=${SERVER_PASS:-secret}
SERVER_PUBLIC=${SERVER_PUBLIC:-1}
timeout=20
kill_signal=TERM

export SteamAppId=892970
export LD_LIBRARY_PATH="/opt/valheim/linux64/"

main() {
    while :; do
        if [ -f "$valheim_server" ]; then
            break
        else
            echo "Valheim Server is not yet downloaded - waiting"
            sleep 10
        fi
    done
    echo "Running Valheim Server"
    "$valheim_server" -nographics -batchmode -name "$SERVER_NAME" -port $SERVER_PORT -world "$WORLD_NAME" -password "$SERVER_PASS" -public $SERVER_PUBLIC &
    valheim_server_pid=$!
    wait
}

shutdown() {
    if [ $valheim_server_pid -eq -1 ]; then
        echo "Valheim server is not running yet - ignoring shutdown request"
        return
    fi
    echo "Shutting down Valheim Server with PID $valheim_server_pid"
    kill -INT $valheim_server_pid
    shutdown_timeout=$(($(date +%s)+$timeout))
    while [ -d "/proc/$valheim_server_pid" ]; do
        if [ $(date +%s) -gt $shutdown_timeout ]; then
            shutdown_timeout=$(($(date +%s)+$timeout))
            echo "Timeout while waiting for server to shutdown - sending SIG$kill_signal to PID $valheim_server_pid"
            kill -$kill_signal $valheim_server_pid
            case "$kill_signal" in
                INT)
                    kill_signal=TERM
                    ;;
                *)
                    kill_signal=KILL
            esac
        fi
        echo "Waiting for Valheim Server with PID $valheim_server_pid to shutdown"
        sleep 3
    done
    echo "Shutdown complete"
    exit
}

trap shutdown SIGINT SIGTERM
main