tlp-rdw-nm.in

#!/bin/sh
# tlp-rdw - network manager dispatcher hook:
#           enable/disable radios on ifup/ifdown
#
# Copyright (c) 2016 Thomas Koch <linrunner at gmx.net>
# This software is licensed under the GPL v2 or later.

# --- Constants
readonly LIBDIR="@TLP_TLIB@"
readonly LIBS="tlp-functions tlp-rf-func"

# --- Functions

check_switch_lock() { # switch listed radio devices
    # and time-lock them afterwards if actually switched
    # $1: device where the event originated -- do nothing if its time-locked
    # $2: list of device types to switch
    # $3: on/off
    local dev

    # quit if the originating *radio* device is time-locked (not LAN)
    [ "$1" != "LAN" ] && check_timed_lock "${RDW_NM_LOCK}_$1" && return 1

    for dev in $2; do
        if [ -n "$dev" ] && [ "$dev" != "$1" ]; then
            # device type is valid and not the originating one
            # --> do switch with state change lock
            device_switch $dev $3 "${RDW_NM_LOCK}_${dev}" $RDW_LOCKTIME
        fi
    done

    return 0
}

# --- Source libraries
for lib in $LIBS; do
    if [ ! -f $LIBDIR/$lib ]; then
        echo "Error: missing function library \'$LIBDIR/$lib\'." 1>&2
        exit 1
    fi
    . $LIBDIR/$lib
done

# --- MAIN
read_defaults
check_tlp_enabled || exit 0
add_sbin2path

# Get args
iface="$1"
action="$2"
itype="unknown"

# Quit for invalid interfaces
[ -n "$iface" ] && [ "$iface" != "none" ] || exit 0

# Quit for actions other than "up" and "down"
[ "$action" = "up" ] || [ "$action" = "down" ] || exit 0

echo_debug "nm" "+++ rdw_nm($iface).$action"
if [ -n "$addpath" ]; then
    echo_debug "path" "PATH=$oldpath[$addpath]"
else
    echo_debug "path" "PATH=$oldpath"
fi

# Determine interface type
if cmd_exists $NMCLI ; then
    # nmcli is available --> check if nmcli dev output matches interface
    itype="$($NMCLI dev | awk '$1 ~ /^'$iface'$/ { print $2; }')"

    if [ -z "$itype" ]; then
        # iface is not found in nmcli dev output: many WWAN devices have
        # different devices for control and the actual network connection
        # --> check if interface matches a WWAN device
        get_wwan_ifaces
        if wordinlist "$iface" "$wanifaces"; then
            itype="wwan"
        else
            # fallback:
            # if interface type detection with nmcli failed, then try to
            # deduct it using interface name: it can happen if e.g.
            # usb network card is unplugged
            case "$iface" in
                en* | eth*)
                    itype="ethernet"
                    ;;

                wl*)
                    itype="wifi"
                    ;;

                ww*)
                    itype="wwan"
                    ;;

                *)
                    itype="unknown"
                    ;;
            esac
        fi
    fi
    echo_debug "nm" "rdw_nm($iface).$action: type=$itype [nmcli]"
else
    # nmcli is not available
    echo_debug "nm" "rdw_nm($iface)$action.nmcli_not_available"
fi

case $action in
    up) # interface up, disable configured interfaces

        case $itype in
            *ethernet)
                check_switch_lock LAN "$DEVICES_TO_DISABLE_ON_LAN_CONNECT" off
                ;;

            *wireless|wifi)
                check_switch_lock wifi "$DEVICES_TO_DISABLE_ON_WIFI_CONNECT" off
                ;;

            gsm|wwan)
                check_switch_lock wwan "$DEVICES_TO_DISABLE_ON_WWAN_CONNECT" off
                ;;
        esac
        ;; # up

    down) # interface down, enable configured interfaces
        case $itype in
            *ethernet)
                check_switch_lock LAN "$DEVICES_TO_ENABLE_ON_LAN_DISCONNECT" on
                ;;

            *wireless|wifi)
                check_switch_lock wifi "$DEVICES_TO_ENABLE_ON_WIFI_DISCONNECT" on
                ;;

            gsm|wwan)
                check_switch_lock wwan "$DEVICES_TO_ENABLE_ON_WWAN_DISCONNECT" on
                ;;
        esac
        ;; # down

esac

exit 0