scripts-startup.sh

#!/bin/sh
# Made by Jack'lul <jacklul.github.io>
#
# This script starts all other scripts
# Only scripts containing "start" case will be started
#

#shellcheck disable=SC2155

readonly SCRIPT_PATH="$(readlink -f "$0")"
readonly SCRIPT_NAME="$(basename "$SCRIPT_PATH" .sh)"
readonly SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"
readonly SCRIPT_CONFIG="$SCRIPT_DIR/$SCRIPT_NAME.conf"
readonly SCRIPT_TAG="$(basename "$SCRIPT_PATH")"

SCRIPTS_DIR="/jffs/scripts"
CHECK_FILE="/tmp/scripts_started"

if [ -f "$SCRIPT_CONFIG" ]; then
    #shellcheck disable=SC1090
    . "$SCRIPT_CONFIG"
fi

scripts() {
    readonly _ACTION="$1"

    [ ! -d "$SCRIPTS_DIR" ] && return

    for ENTRY in "$SCRIPTS_DIR"/*.sh; do
        [ "$(basename "$ENTRY" .sh)" = "$SCRIPT_NAME" ] && continue
        ! grep -q "\"start\")" "$ENTRY" && continue

        if [ -x "$ENTRY" ]; then
            ENTRY="$(readlink -f "$ENTRY")"

            case "$_ACTION" in
                "start")
                    logger -s -t "$SCRIPT_TAG" "Starting $ENTRY..."
                ;;
                "stop")
                    logger -s -t "$SCRIPT_TAG" "Stopping $ENTRY..."
                ;;
            esac

            /bin/sh "$ENTRY" "$_ACTION"
        fi
    done
}

case "$1" in
    "start")
        if [ ! -f "$CHECK_FILE" ]; then
            logger -s -t "$SCRIPT_TAG" "Starting custom scripts ($SCRIPTS_DIR)..."

            date > $CHECK_FILE

            scripts start
        fi
    ;;
    "stop")
        logger -s -t "$SCRIPT_TAG" "Stopping custom scripts ($SCRIPTS_DIR)..."

        rm -f "$CHECK_FILE"

        scripts stop
    ;;
    "install")
        mkdir -pv "$SCRIPTS_DIR"

        if [ -f "/usr/sbin/helper.sh" ]; then # could also be [ "$(uname -o)" = "ASUSWRT-Merlin" ] ?
            cat <<EOT
You should not be using this script on Asuswrt-Merlin!
Please start individual scripts from /jffs/scripts/services-start instead!

If you continue an entry to start this script will be added to /jffs/scripts/services-start.
EOT

            #shellcheck disable=SC3045,SC2162
            read -p "Continue ? [y/N] : " -n1 REPLY
            echo

            case $REPLY in
                [Yy]*)
                    if [ ! -f /jffs/scripts/services-start ]; then
                    echo "Creating /jffs/scripts/services-start"

                    cat <<EOT > /jffs/scripts/services-start
#!/bin/sh

EOT
                    chmod 0755 /jffs/scripts/services-start
                fi

                if ! grep -q "$SCRIPT_PATH" /jffs/scripts/services-start; then
                    echo "Adding script to /jffs/scripts/services-start"

                    echo "$SCRIPT_PATH start & # jacklul/asuswrt-scripts" >> /jffs/scripts/services-start
                else
                    echo "Script line already exists in /jffs/scripts/services-start"
                fi
                ;;
            esac
        else
            NVRAM_SCRIPT="/bin/sh $SCRIPT_PATH start"

            if [ "$(nvram get script_usbmount)" != "$NVRAM_SCRIPT" ]; then
                echo "Setting NVRAM variable \"script_usbmount\" to \"$NVRAM_SCRIPT\""

                nvram set script_usbmount="$NVRAM_SCRIPT"
                nvram commit
            else
                echo "NVRAM variable \"script_usbmount\" is already set to \"$NVRAM_SCRIPT\""
            fi
        fi
    ;;
    *)
        echo "Usage: $0 start|stop|install"
        exit 1
    ;;
esac