openrc/net.BSD/iwconfig.sh

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# Copyright 2004-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
_config_vars="$_config_vars essid mode associate_timeout preferred_aps blacklist_aps"
iwconfig_depend() {
program /sbin/ifconfig
after plug
before interface
provide wireless
}
iwconfig_get_wep_status() {
local status="disabled"
local mode=$(LC_ALL=C ifconfig "${IFACE}" \
| sed -n -e 's/^[[:space:]]*authmode \([^ ]*\) privacy ON .*/\1/p')
if [ -n "${mode}" ] ; then
status="enabled - ${mode}"
fi
echo "(WEP ${status})"
}
_iwconfig_get() {
LC_ALL=C ifconfig "${IFACE}" | \
sed -n -e 's/^[[:space:]]*ssid \(.*\) channel \([0-9]*\) bssid \(..:..:..:..:..:..\)$/\'"$1"'/p'
}
_get_ssid() {
_iwconfig_get 1
}
_get_ap_mac_address() {
_iwconfig_get 3
}
_get_channel() {
_iwconfig_get 2
}
iwconfig_report() {
local m="connected to"
local ssid=$(_get_ssid)
local mac=$(_get_ap_mac_address "${iface}")
[ -n "${mac}" ] && mac=" at ${mac}"
local wep_status="$(iwconfig_get_wep_status "${iface}")"
local channel=$(_get_channel)
[ -n "${channel}" ] && channel="on channel ${channel} "
eindent
einfo "${IFACE} ${m} \"${ssid}\"${mac}"
einfo "${channel}${wep_status}"
eoutdent
}
iwconfig_get_wep_key() {
local mac="$1" key=
[ -n "${mac}" ] && mac="$(echo "${mac}" | sed -e 's/://g')"
eval key=\$mac_key_${mac}
[ -z "${key}" ] && eval key=\$key_${SSIDVAR}
echo "${key:--}"
}
iwconfig_user_config() {
local conf=
eval set -- \$ifconfig_${SSIDVAR}
for conf in "$@" ; do
ifconfig "${IFACE}" ${conf}
done
}
iwconfig_set_mode() {
local x= opt= unopt="hostap adhoc"
case "${mode}" in
master|hostap) unopt="adhoc" opt="hostap" ;;
ad-hoc|adhoc) unopt="hostap" opt="adhoc" ;;
esac
for x in ${unopt} ; do
ifconfig "${IFACE}" -mediaopt ${x}
done
for x in ${opt} ; do
ifconfig "${IFACE}" mediaopt ${x}
done
}
iwconfig_setup_specific() {
local mode="${1:-master}" channel=
if [ -z "${SSID}" ]; then
eerror "${IFACE} requires an SSID to be set to operate in ${mode} mode"
eerror "adjust the ssid_${IFVAR} setting in /etc/conf.d/net"
return 1
fi
iwconfig_set_mode "${mode}" || return 1
SSIDVAR=$(_shell_var "${SSID}")
local key=$(iwconfig_get_wep_key)
# Now set the key
ifconfig "${IFACE}" wepkey ${key}
ifconfig "${IFACE}" ssid "${ESSID}" || return 1
eval channel=\$channel_${IFVAR}
# We default the channel to 3
ifconfig "${IFACE}" channel "${channel:-3}" || return 1
iwconfig_user_config
iwconfig_report "${iface}"
return 0
}
iwconfig_associate() {
local mac="$1" channel="$2" caps="$3"
local mode= w="(WEP Disabled)" key=
SSIDVAR=$(_shell_var "${SSID}")
key=$(iwconfig_get_wep_key "${mac}")
case "${caps}" in
[EI]P*)
if [ "${key}" = "-" ] ; then
ewarn "WEP key is not set for \"${SSID}\"; not connecting"
return 1
fi
;;
"") ;;
*)
if [ "${key}" != "-" ] ; then
key="-"
ewarn "\"${ESSID}\" is not WEP enabled; ignoring setting"
fi
;;
esac
# Set mode accordingly
case "${caps}" in
*E*) mode="managed"; ifconfig "${IFACE}" -mediaopt adhoc ;;
*I*) mode="adhoc"; ifconfig "${IFACE}" mediaopt adhoc ;;
*)
if LC_ALL=C ifconfig "${IFACE}" | grep -q "^[[:space:]]*media: .*adhoc" ; then
mode="adhoc"
else
mode="managed"
fi
;;
esac
if [ "${key}" = "-" ] ; then
ifconfig "${IFACE}" wepmode off
else
ifconfig "${IFACE}" wepmode on
ifconfig "${IFACE}" deftxkey 1
w=$(iwconfig_get_wep_status)
fi
ebegin "Connecting to \"${SSID}\" in ${mode} mode ${w}"
if ! ifconfig "${IFACE}" wepkey ${key} ; then
eerror "Invalid WEP key ${key}"
return 1
fi
ifconfig "${IFACE}" ssid "${SSID}" || return 1
iwconfig_user_config
if [ "${SSID}" != "any" ] && type preassociate >/dev/null 2>/dev/null ; then
veinfo "Running preassociate function"
veindent
( preassociate )
local e=$?
veoutdent
if [ ${e} -eq 0 ] ; then
veend 1 "preassociate \"${SSID}\" on ${IFACE} failed"
return 1
fi
fi
local timeout= i=0
eval timeout=\$associate_timeout_${IFVAR}
timeout=${timeout:-10}
[ ${timeout} -eq 0 ] \
&& vewarn "WARNING: infinite timeout set for association on ${IFACE}"
while true; do
_has_carrier && break
sleep 1
[ ${timeout} -eq 0 ] && continue
i=$((${i} + 1))
[ ${i} -ge ${timeout} ] && return 1
done
if ! _has_carrier ; then
eend 1
return 1
fi
eend 0
if [ "${SSID}" = "any" ]; then
SSID="$(_get_ssid)"
iwconfig_associate
return $?
fi
iwconfig_report
if type postassociate >/dev/null 2>/dev/null ; then
veinfo "Running postassociate function"
veindent
( postassociate )
veoutdent
fi
return 0
}
iwconfig_scan() {
local x= i=0 scan= quality=
einfo "Scanning for access points"
eindent
scan="$(LC_ALL=C ifconfig -v "${IFACE}" list scan 2>/dev/null | sed -e "1 d" -e "s/$/'/g" -e "s/^/'/g")"
while [ ${i} -lt 3 -o -z "${scan}" ] ; do
scan="${scan}${scan:+ }$(LC_ALL=C ifconfig -v "${IFACE}" scan 2>/dev/null | sed -e "1 d" -e "s/$/'/g" -e "s/^/'/g")"
i=$((${i} + 1))
done
local OIFS=$IFS
APS=-1
eval set -- ${scan}
for line in "$@" ; do
APS=$((${APS} + 1))
set -- ${line}
while true ; do
case "$1" in
*:*:*:*:*:*) break ;;
esac
eval SSID_${APS}="\"\${SSID_${APS}}\${SSID_${APS}:+ }$1\""
shift
done
eval MAC_${APS}="$(echo "$1" | tr '[:lower:]' '[:upper:]')"
eval CHAN_${APS}=$2
quality=${4%:*}
shift ; shift ; shift ; shift ; shift
eval CAPS_${APS}=$*
# Add 1000 for managed nodes as we prefer them to adhoc
set -- $*
case "$1" in
*E*) eval QUAL_${APS}=$((${quality} + 1000)) ;;
*) eval QUAL_${APS}=\$quality ;;
esac
done
if [ -z "${MAC_0}" ]; then
ewarn "no access points found"
eoutdent
return 1
fi
# Sort based on quality
local i=0 k=1 a= b= x= t=
while [ ${i} -lt ${APS} ] ; do
k=$((${i} + 1))
while [ ${k} -le ${APS} ] ; do
eval a=\$QUALITY_${i}
[ -z "${a}" ] && break
eval b=\$QUALITY_${k}
if [ -n "${b}" -a "${a}" -lt "${b}" ] ; then
for x in MAC SSID CHAN QUALITY CAPS ; do
eval t=\$${x}_${i}
eval ${x}_${i}=\$${x}_${k}
eval ${x}_${k}=\$t
done
fi
k=$((${k} + 1))
done
i=$((${i} + 1))
done
# Strip any duplicates
local i=0 k=1 a= b=
while [ ${i} -lt ${APS} ] ; do
k=$((${i} + 1))
while [ ${k} -le ${APS} ] ; do
eval a=\$MAC_${i}
eval b=\$MAC_${k}
if [ "${a}" = "${b}" ] ; then
eval a=\$QUALITY_${i}
eval b=\$QUALITY_${k}
if [ -n "${a}" -a -n "${b}" ] ; then
if [ ${a} -ge ${b} ] ; then
unset MAC_${k} SSID_${k} CHAN_${k} QUALITY_${k} CAPS_${k}
else
unset MAC_${i} SSID_${i} CHAN_${i} QUALITY_${i} CAPS_${i}
fi
else
unset MAC_${k} SSID_${k} CHAN_${k} QUALITY_${k} CAPS_${k}
fi
fi
k=$((${k} + 1))
done
i=$((${i} + 1))
done
local i=0 e= m= black= s=
eval "$(_get_array "blacklist_aps")"
black="$@"
while [ ${i} -le ${APS} ] ; do
eval x=\$MAC_${i}
if [ -z "${x}" ] ; then
i=$((${i} + 1))
continue
fi
eval m=\$MODE_${i}
[ -n "${m}" ] && m=", ${m}"
eval s=\$SSID_${i}
eval q=\$QUALITY_${i}
eval e=\$CAPS_${i}
case "${e}" in
[EI]P*) e=", encrypted" ;;
*) e="" ;;
esac
if [ -z "${s}" ] ; then
einfo "Found ${x}${m}${e}"
else
einfo "Found \"${s}\" at ${x}${m}${e}"
fi
x="$(echo "${x}" | sed -e 's/://g')"
eval x=\$mac_ssid_${x}
if [ -n "${x}" ] ; then
eval SSID_${i}=\$x
s=${x}
eindent
einfo "mapping to \"${x}\""
eoutdent
fi
eval "$(_get_array "blacklist_aps")"
for x in "$@" ; do
if [ "${x}" = "${s}" ] ; then
ewarn "${s} has been blacklisted - not connecting"
unset SSID_${i} MAC_${i} CHAN_${i} QUALITY_${i} CAPS_${i}
fi
done
i=$((${i} + 1))
done
eoutdent
return 0
}
iwconfig_force_preferred() {
[ -z "${preferred_aps}" ] && return 1
ewarn "Trying to force preferred in case they are hidden"
eval "(_get_array "preferred_aps")"
local ssid=
for ssid in "$@"; do
local found_AP=false i=0 e=
while [ ${i} -le ${APS} ] ; do
eval e=\$SSID_${i}
if [ "${e}" = "${ssid}" ] ; then
found_AP=true
break
fi
i=$((${i} + 1))
done
if ! ${found_AP} ; then
SSID=${e}
iwconfig_associate && return 0
fi
done
ewarn "Failed to associate with any preferred access points on ${IFACE}"
return 1
}
iwconfig_connect_preferred() {
local essid= i=0 mode= mac= caps= freq= chan=
eval "$(_get_array preferred_aps)"
for essid in "$@"; do
while [ ${i} -le ${APS} ] ; do
eval e=\$SSID_${i}
if [ "${e}" = "${essid}" ] ; then
SSID=${e}
eval mac=\$MAC_${i}
eval caps=\$CAPS_${i}
eval freq=\$FREQ_${i}
eval chan=\$CHAN_${i}
iwconfig_associate "${mac}" \
"${chan}" "${caps}" && return 0
fi
i=$((${i} + 1))
done
done
return 1
}
iwconfig_connect_not_preferred() {
local essid= i=0 mode= mac= caps= freq= chan= pref=
while [ ${i} -le ${APS} ] ; do
eval e=\$SSID_${i}
if [ -z "${e}" ] ; then
i=$((${i} + 1))
continue
fi
eval "$(_get_array preferred_aps)"
pref=false
for essid in "$@" ; do
if [ "${e}" = "${essid}" ] ; then
pref=true
break
fi
done
if ! ${pref} ; then
SSID=${e}
eval mac=\$MAC_${i}
eval caps=\$CAPS_${i}
eval freq=\$FREQ_${i}
eval chan=\$CHAN_${i}
iwconfig_associate "${mac}" \
"${chan}" "${caps}" && return 0
fi
i=$((${i} + 1))
done
return 1
}
iwconfig_defaults() {
# Set some defaults
#ifconfig "${iface}" txpower 100 2>/dev/null
ifconfig "${IFACE}" bssid -
ifconfig "${IFACE}" ssid -
ifconfig "${IFACE}" authmode open
ifconfig "${IFACE}" -mediaopt adhoc
ifconfig "${IFACE}" -mediaopt hostap
}
iwconfig_configure() {
local x APS
eval SSID=\$ssid_${IFVAR}
# Setup ad-hoc mode?
eval x=\$mode_${IFVAR}
x=${x:-managed}
case "${x}" in
ad-hoc|adhoc|hostap|master) iwconfig_setup_specific "${x}" ;;
esac
if [ "${x}" != "managed" -a "${x}" != "auto" ] ; then
eerror "Only managed, ad-hoc, master and auto modes are supported"
return 1
fi
# Has an ESSID been forced?
if [ -n "${SSID}" ]; then
iwconfig_set_mode "${x}"
iwconfig_associate && return 0
[ "${SSID}" = "any" ] && iwconfig_force_preferred && return 0
eval SSID=\$adhoc_ssid_${IFVAR}
if [ -n "${SSID}" ]; then
iwconfig_setup_specific adhoc
return $?
fi
return 1
fi
# Are we forcing preferred only?
eval x=\$associate_order_${IFVAR}
[ -n "${x}" ] && associate_order=${x}
associate_order=${associate_order:-any}
if [ "${associate_order}" = "forcepreferredonly" ]; then
iwconfig_force_preferred && return 0
else
iwconfig_scan || return 1
iwconfig_connect_preferred && return 0
[ "${associate_order}" = "forcepreferred" ] || \
[ "${associate_order}" = "forceany" ] && \
iwconfig_force_preferred && return 0
[ "${associate_order}" = "any" ] || \
[ "${associate_order}" = "forceany" ] && \
iwconfig_connect_not_preferred && return 0
fi
e="associate with"
[ -z "${MAC_0}" ] && e="find"
[ "${preferred_aps}" = "force" ] || \
[ "${preferred_aps}" = "forceonly" ] && \
e="force"
e="Couldn't ${e} any access points on ${IFACE}"
eval SSID=\$adhoc_ssid_${IFVAR}
if [ -n "${SSID}" ]; then
ewarn "${e}"
iwconfig_setup_specific adhoc
return $?
fi
eerror "${e}"
return 1
}
iwconfig_pre_start() {
# We don't configure wireless if we're being called from
# the background
${IN_BACKGROUND} && return 0
save_options "SSID" ""
_exists || return 0
if ! _is_wireless ; then
veinfo "${IFACE} is not wireless"
return 0
fi
iwconfig_defaults
iwconfig_user_config
# Set the base metric to be 2000
metric=2000
einfo "Configuring wireless network for ${IFACE}"
if iwconfig_configure ; then
save_options "ESSID" "${ESSID}"
return 0
fi
eerror "Failed to configure wireless for ${IFACE}"
iwconfig_defaults
#iwconfig "${IFACE}" txpower 0 2>/dev/null
unset SSID SSIDVAR
_down
return 1
}
iwconfig_post_stop() {
${IN_BACKGROUND} && return 0
_is_wireless || return 0
iwconfig_defaults
#iwconfig "${IFACE}" txpower 0 2>/dev/null
}
# vim: set ts=4