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# Start, reconfigure and stop wpa_supplicant per wireless interface.
#
# This is only needed when using wpa_supplicant-2.5 or older, OR
# when wpa_supplicant has not been built with CONFIG_MATCH_IFACE, OR
# wpa_supplicant was launched without the -M flag to activate
# interface matching.
if [ -z "$wpa_supplicant_conf" ]; then
for x in \
/etc/wpa_supplicant/wpa_supplicant-"$interface".conf \
/etc/wpa_supplicant/wpa_supplicant.conf \
/etc/wpa_supplicant-"$interface".conf \
/etc/wpa_supplicant.conf \
; do
if [ -s "$x" ]; then
wpa_supplicant_conf="$x"
break
fi
done
fi
: ${wpa_supplicant_conf:=/etc/wpa_supplicant.conf}
wpa_supplicant_ctrldir()
{
dir=$(key_get_value "[[:space:]]*ctrl_interface=" \
"$wpa_supplicant_conf")
dir=$(trim "$dir")
case "$dir" in
DIR=*)
dir=${dir##DIR=}
dir=${dir%%[[:space:]]GROUP=*}
dir=$(trim "$dir")
;;
esac
printf %s "$dir"
}
wpa_supplicant_start()
{
# If the carrier is up, don't bother checking anything
[ "$ifcarrier" = "up" ] && return 0
# Pre flight checks
if [ ! -s "$wpa_supplicant_conf" ]; then
syslog warn \
"$wpa_supplicant_conf does not exist"
syslog warn "not interacting with wpa_supplicant(8)"
return 1
fi
dir=$(wpa_supplicant_ctrldir)
if [ -z "$dir" ]; then
syslog warn \
"ctrl_interface not defined in $wpa_supplicant_conf"
syslog warn "not interacting with wpa_supplicant(8)"
return 1
fi
wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 && return 0
syslog info "starting wpa_supplicant"
driver=${wpa_supplicant_driver:+-D}$wpa_supplicant_driver
err=$(wpa_supplicant -B -c"$wpa_supplicant_conf" -i"$interface" \
"$driver" 2>&1)
errn=$?
if [ $errn != 0 ]; then
syslog err "failed to start wpa_supplicant"
syslog err "$err"
fi
return $errn
}
wpa_supplicant_reconfigure()
{
dir=$(wpa_supplicant_ctrldir)
[ -z "$dir" ] && return 1
if ! wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1; then
wpa_supplicant_start
return $?
fi
syslog info "reconfiguring wpa_supplicant"
err=$(wpa_cli -p "$dir" -i "$interface" reconfigure 2>&1)
errn=$?
if [ $errn != 0 ]; then
syslog err "failed to reconfigure wpa_supplicant"
syslog err "$err"
fi
return $errn
}
wpa_supplicant_stop()
{
dir=$(wpa_supplicant_ctrldir)
[ -z "$dir" ] && return 1
wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 || return 0
syslog info "stopping wpa_supplicant"
err=$(wpa_cli -i"$interface" terminate 2>&1)
errn=$?
if [ $errn != 0 ]; then
syslog err "failed to stop wpa_supplicant"
syslog err "$err"
fi
return $errn
}
if [ "$ifwireless" = "1" ] && \
type wpa_supplicant >/dev/null 2>&1 && \
type wpa_cli >/dev/null 2>&1
then
case "$reason" in
PREINIT) wpa_supplicant_start;;
RECONFIGURE) wpa_supplicant_reconfigure;;
DEPARTED) wpa_supplicant_stop;;
esac
fi
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