openrc/net/wpa_supplicant.sh

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# Copyright 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
wpa_supplicant_depend()
{
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if [ -x /usr/sbin/wpa_supplicant ]; then
program start /usr/sbin/wpa_supplicant
else
program start /sbin/wpa_supplicant
fi
after macnet plug
before interface
provide wireless
# Prefer us over iwconfig
after iwconfig
}
# Only set these functions if not set already
# IE, prefer to use iwconfig
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if ! type _get_ssid >/dev/null 2>&1; then
_get_ssid()
{
local timeout=5 ssid=
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while [ ${timeout} -gt 0 ]; do
ssid=$(wpa_cli -i"${IFACE}" status | sed -n -e 's/^ssid=//p')
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if [ -n "${ssid}" ]; then
echo "${ssid}"
return 0
fi
sleep 1
timeout=$((timeout - 1))
done
return 1
}
_get_ap_mac_address()
{
wpa_cli -i"${IFACE}" status | sed -n -e 's/^bssid=\(.*\)$/\1/p' \
| tr '[:lower:]' '[:upper:]'
}
fi
wpa_supplicant_pre_start()
{
local opts= cfgfile= ctrl_dir= wireless=true
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local wpas=/usr/sbin/wpa_supplicant wpac=/usr/bin/wpa_cli
local actfile=/etc/wpa_supplicant/wpa_cli.sh
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if [ ! -x "${wpas}" ]; then
wpas=/sbin/wpa_supplicant
wpac=/bin/wpa_cli
fi
[ "${RC_UNAME}" = "Linux" ] || unset wpac
[ -e "${actfile}" ] || unset wpac
eval opts=\$wpa_supplicant_${IFVAR}
case " ${opts} " in
*" -Dwired "*) wireless=false;;
*) _is_wireless || return 0;;
esac
# We don't configure wireless if we're being called from
# the background unless we're not currently running
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if yesno ${IN_BACKGROUND}; then
if ${wireless} && \
service_started_daemon "${RC_SVCNAME}" "${wpas}"; then
SSID=$(_get_ssid "${IFACE}")
SSIDVAR=$(shell_var "${SSID}")
service_set_value "SSID" "${SSID}"
metric=2000
fi
return 0
fi
service_set_value "SSID" ""
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ebegin "Starting wpa_supplicant on ${IFVAR}"
if type iwconfig_defaults >/dev/null 2>&1; then
iwconfig_defaults
iwconfig_user_config
fi
cfgfile=${opts##* -c}
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if [ -n "${cfgfile}" -a "${cfgfile}" != "${opts}" ]; then
case "${cfgfile}" in
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" "*) cfgfile=${cfgfile# *};;
esac
cfgfile=${cfgfile%% *}
else
# Support new and old style locations
cfgfile="/etc/wpa_supplicant/wpa_supplicant-${IFACE}.conf"
[ ! -e "${cfgfile}" ] \
&& cfgfile="/etc/wpa_supplicant/wpa_supplicant.conf"
[ ! -e ${cfgfile} ] \
&& cfgfile="/etc/wpa_supplicant.conf"
opts="${opts} -c ${cfgfile}"
fi
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if [ ! -f ${cfgfile} ]; then
eend 1 "/etc/wpa_supplicant/wpa_supplicant.conf not found"
return 1
fi
# Work out where the ctrl_interface dir is if it's not specified
local ctrl_dir=$(sed -e 's/^ *//' \
-e '/^ctrl_interface=/!d' \
-e 's/^ctrl_interface=//' \
-e 's/^ *//' \
-e 's/^DIR=//' \
-e 's/^ *//' \
-e 's/GROUP=.*//' \
-e 's/ *$//' \
"${cfgfile}")
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if [ -z "${ctrl_dir}" ]; then
ctrl_dir=${opts##* -C}
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if [ -n "${ctrl_dir}" -a "${ctrl_dir}" != "${opts}" ]; then
case "${ctrl_dir}" in
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" "*) ctrl_dir=${ctrl_dir# *};;
esac
ctrl_dir=${ctrl_dir%% *}
else
ctrl_dir="/var/run/wpa_supplicant"
opts="${opts} -C ${ctrl_dir}"
fi
fi
service_set_value ctrl_dir "${ctrl_dir}"
if [ -n "${wpac}" ]; then
opts="${opts} -W"
elif service_started devd; then
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mark_service_inactive
fi
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start-stop-daemon --start --exec "${wpas}" \
--pidfile "/var/run/wpa_supplicant-${IFACE}.pid" \
-- ${opts} -B -i "${IFACE}" \
-P "/var/run/wpa_supplicant-${IFACE}.pid"
eend $? || return 1
# If we don't have a working wpa_cli and action file continue
if [ -z "${wpac}" ]; then
if service_started devd; then
ebegin "Backgrounding ..."
exit 1
fi
return 0
fi
# Starting wpa_supplication-0.4.0, we can get wpa_cli to
# start/stop our scripts from wpa_supplicant messages
local inact=false
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service_inactive && inact=true
mark_service_inactive
ebegin "Starting wpa_cli on" "${IFACE}"
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start-stop-daemon --start --exec "${wpac}" \
--pidfile "/var/run/wpa_cli-${IFACE}.pid" \
-- -a "${actfile}" -p "${ctrl_dir}" -i "${IFACE}" \
-P "/var/run/wpa_cli-${IFACE}.pid" -B
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if eend $?; then
ebegin "Backgrounding ..."
exit 1
fi
# wpa_cli failed to start? OK, error here
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start-stop-daemon --quiet --stop --exec "${wpas}" \
--pidfile "/var/run/wpa_supplicant-${IFACE}.pid"
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${inact} || mark_service_stopped
return 1
}
wpa_supplicant_post_stop()
{
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local wpas=/usr/sbin/wpa_supplicant wpac=/usr/bin/wpa_cli
if [ ! -x "${wpas}" ]; then
wpas=/sbin/wpa_supplicant
wpac=/bin/wpa_cli
fi
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if yesno "${IN_BACKGROUND}"; then
# Only stop wpa_supplicant if it's not the controlling daemon
! service_started_daemon "${RC_SVCNAME}" "${wpas}" 1
fi
[ $? != 0 ] && return 0
local pidfile="/var/run/wpa_cli-${IFACE}.pid"
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if [ -f ${pidfile} ]; then
ebegin "Stopping wpa_cli on ${IFACE}"
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start-stop-daemon --stop --exec "${wpac}" --pidfile "${pidfile}"
eend $?
fi
pidfile="/var/run/wpa_supplicant-${IFACE}.pid"
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if [ -f ${pidfile} ]; then
ebegin "Stopping wpa_supplicant on ${IFACE}"
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start-stop-daemon --stop --exec "${wpas}" --pidfile "${pidfile}"
eend $?
fi
# If wpa_supplicant exits uncleanly, we need to remove the stale dir
[ -S "/var/run/wpa_supplicant/${IFACE}" ] \
&& rm -f "/var/run/wpa_supplicant/${IFACE}"
}