diff options
Diffstat (limited to 'main/wpa_supplicant/wpa_cli.sh')
| -rw-r--r-- | main/wpa_supplicant/wpa_cli.sh | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/main/wpa_supplicant/wpa_cli.sh b/main/wpa_supplicant/wpa_cli.sh index 0a5a6cc036b..dd9bc2ca467 100644 --- a/main/wpa_supplicant/wpa_cli.sh +++ b/main/wpa_supplicant/wpa_cli.sh @@ -1,33 +1,40 @@ #!/bin/sh -# Distributed under the terms of the BSD License. -# Copyright (c) 2015 Sören Tempel <soeren+alpine@soeren-tempel.net> +# Script for using udhcpc (started by ifup) with wpa_supplicant. +# +# Distributed under the same license as wpa_supplicant itself. +# Copyright (c) 2015,2018 Sören Tempel <soeren+alpine@soeren-tempel.net> -IFUP="/sbin/ifup" -IFDOWN="/sbin/ifdown" - -if [ -z "${1}" -o -z "${2}" ]; then +if [ $# -ne 2 ]; then logger -t wpa_cli "this script should be called from wpa_cli(8)" exit 1 -elif ! [ -x "${IFUP}" -a -x "${IFDOWN}" ]; then - logger -t wpa_cli "${IFUP} or ${IFDOWN} doesn't exist" - exit 1 fi IFNAME="${1}" ACTION="${2}" +SIGNAL="" +DHCPID="" + +# PID file created by the busybox ifup applet for udhcpc. +DHCPIDFILE="/var/run/udhcpc.${IFNAME}.pid" + +if [ ! -e "${DHCPIDFILE}" ]; then + logger -t wpa_cli "udhcpc isn't running for interface '${IFNAME}'" + exit 1 +fi -EXEC="" +logger -t wpa_cli "interface ${IFNAME} ${ACTION}" case "${ACTION}" in CONNECTED) - EXEC="${IFUP}" + SIGNAL="USR1" ;; DISCONNECTED) - EXEC="${IFDOWN}" + SIGNAL="USR2" ;; *) logger -t wpa_cli "unknown action '${ACTION}'" exit 1 esac -logger -t wpa_cli "interface ${IFNAME} ${ACTION}" -${EXEC} "${IFNAME}" || logger -t wpa_cli "executing '${EXEC}' failed" +read -r DHCPID < "${DHCPIDFILE}" +kill -${SIGNAL} "${DHCPID}" || logger -t wpa_cli \ + "Couldn't send '${SIGNAL}' to '${DHCPID}'" |