#!/bin/sh
# /etc/rc.d/rc.wireless
#
# Wireless network card setup.
#
# This script sets up PCI, USB, and 32-bit Cardbus wireless devices
# NOT 16-bit PCMCIA cards! Those are configured in /etc/pcmcia/.
# Single parameter to this script is the name of a network interface.
# Normally this script is called from rc.inet1 rather than run
# directly.
#
# This script is a modified '/etc/pcmcia/wireless' script
# 09/apr/2004 by Eric Hameleers
# 16/sep/2004 * Eric Hameleers * Fixed iwspy and iwpriv commands
# 08/apr/2005 * Eric Hameleers * Allow per-interface overrides of the wireless
# parameters (see /etc/rc.d/rc.inet1.conf)
# 11/apr/2005 * Eric Hameleers * Tune wpa_supplicant interactions.
# 23/apr/2005 * Eric Hameleers * First configure card with iwconfig,
# before starting wpa_supplicant
# 27/apr/2005 * Eric Hameleers * Multiple 'iwpriv $INTERFACE set' commands.
#
if [ -z $IFNAME ] ; then
echo "The rc.wireless script can only run from within rc.inet1"
echo "Try running \"/etc/rc.d/rc.inet1 ${1}_start\" instead."
return 1 2> /dev/null || exit 1
fi
INTERFACE=$1
LOGGER=${LOGGER:-cat}
# Find the path where wireless tools are installed
for IWPATH in /usr/{bin,sbin} /usr/local/{bin,sbin} /sbin /bin ; do
if [ -x $IWPATH/iwconfig ] ; then break ; fi
done
# The same for wpa_supplicant (needed for WPA support)
for SUPPATH in /usr/{bin,sbin} /usr/local/{bin,sbin} /sbin /bin ; do
if [ -x $SUPPATH/wpa_supplicant ] ; then break ; fi
done
# Set all desired settings through the wireless tools
IWCOMMAND="$IWPATH/iwconfig ${INTERFACE}"
IWPRIVCMD="$IWPATH/iwpriv ${INTERFACE}"
IWSPYCMD="$IWPATH/iwspy ${INTERFACE}"
IFCOMMAND="/sbin/ifconfig ${INTERFACE}"
is_wireless_device ()
{
[ -x $IWPATH/iwconfig ] || return 1
LC_ALL=C $IWPATH/iwconfig $1 2>&1 | \
grep -Eiq "no wireless extensions|no such device" || return 0
return 1
}
###############
# EXIT POINTS #
###############
# Is the device wireless? If not, exit this script.
is_wireless_device ${INTERFACE} || return 0 2> /dev/null || exit 0
# If we stop a wireless interface using wpa_supplicant,
# we'll kill its wpa_supplicant daemon too and exit this script:
if [ "$2" = "stop" ]; then
WPAPID=`echo \`ps axww|grep wpa_supplicant |grep i${INTERFACE}\` |cut -f1 -d' '`
[ ${WPAPID} ] && kill ${WPAPID}
return 0
fi
# -----------------------------------------------------
# Continue with the script - bringing the interface UP.
# -----------------------------------------------------
# Bring interface up - for determining the HWADDR
$IFCOMMAND up
sleep 2
# Get the MAC address for the interface
HWADDR=`/sbin/ifconfig ${INTERFACE} | sed -ne 's/.*\(..:..:..:..:..:..\).*/\1/p'`
# Read the configuration information for the card with address $HWADDR
# from /etc/rc.d/rc.wireless.conf:
. /etc/rc.d/rc.wireless.conf
# Let any per-interface overrides (the WLAN_xxxx parameters) that are set
# in /etc/rc.d/rc.inet1.conf have precedence.
# The reason: you might have multiple wireless cards of the same brand, or
# connecting to multiple networks.
# Position 'i' of this interface in the IFNAME array was determined in rc.inet1
CHANNEL=${WLAN_CHANNEL[$i]:-${CHANNEL}}
ESSID=${WLAN_ESSID[$i]:-${ESSID}}
FREQ=${WLAN_FREQ[$i]:-${FREQ}}
FRAG=${WLAN_FRAG[$i]:-${FRAG}}
IWCONFIG=${WLAN_IWCONFIG[$i]:-${IWCONFIG}}
IWPRIV=${WLAN_IWPRIV[$i]:-${IWPRIV}}
IWSPY=${WLAN_IWSPY[$i]:-${IWSPY}}
KEY=${WLAN_KEY[$i]:-${KEY}}
MODE=${WLAN_MODE[$i]:-${MODE}}
NICKNAME=${WLAN_NICKNAME[$i]:-${NICKNAME}}
NWID=${WLAN_NWID[$i]:-${NWID}}
RATE=${WLAN_RATE[$i]:-${RATE}}
RTS=${WLAN_RTS[$i]:-${RTS}}
SENS=${WLAN_SENS[$i]:-${SENS}}
WPA=${WLAN_WPA[$i]:-${WPA}}
WPADRIVER=${WLAN_WPADRIVER[$i]:-${WPADRIVER}}
WPACONF=${WLAN_WPACONF[$i]:-${WPACONF}}
[ -n "$VERBOSE" -a -n "$INFO" ] && echo "$0: $1 is '$INFO'"
###################
# WIRELESS CONFIG #
###################
# Mode needs to be first : some settings apply only in a specific mode!
if [ -n "$MODE" ] ; then
echo "$0: $IWCOMMAND mode $MODE" | $LOGGER
$IWCOMMAND mode $MODE
fi
# This is a bit hackish, but should do the job right...
if [ ! -n "$NICKNAME" ] ; then
NICKNAME=`/bin/hostname`
fi
if [ -n "$ESSID" -o -n "$MODE" ] ; then
echo "$0: $IWCOMMAND nick $NICKNAME" | $LOGGER
$IWCOMMAND nick $NICKNAME
fi
# Regular stuff...
if [ -n "$NWID" ] ; then
echo "$0: $IWCOMMAND nwid $NWID" | $LOGGER
$IWCOMMAND nwid $NWID
fi
if [ -n "$FREQ" ] ; then
echo "$0: $IWCOMMAND freq $FREQ" | $LOGGER
$IWCOMMAND freq $FREQ
elif [ -n "$CHANNEL" ] ; then
echo "$0: $IWCOMMAND channel $CHANNEL" | $LOGGER
$IWCOMMAND channel $CHANNEL
fi
# WEP keys (non-WPA)
if [ -n "$KEY" -a ! -n "$WPA" ] ; then
if [ "$KEY" = "off" ]; then
echo "$0: $IWCOMMAND key open" | $LOGGER
$IWCOMMAND key open
echo "$0: $IWCOMMAND key off" | $LOGGER
$IWCOMMAND key off
else
echo "$0: $IWCOMMAND key restricted" | $LOGGER
$IWCOMMAND key restricted
echo "$0: $IWCOMMAND key ************" | $LOGGER
$IWCOMMAND key $KEY
fi
fi
if [ -n "$SENS" ] ; then
echo "$0: $IWCOMMAND sens $SENS" | $LOGGER
$IWCOMMAND sens $SENS
fi
if [ -n "$RATE" ] ; then
echo "$0: $IWCOMMAND rate $RATE" | $LOGGER
$IWCOMMAND rate $RATE
fi
if [ -n "$RTS" ] ; then
echo "$0: $IWCOMMAND rts $RTS" | $LOGGER
$IWCOMMAND rts $RTS
fi
if [ -n "$FRAG" ] ; then
echo "$0: $IWCOMMAND frag $FRAG" | $LOGGER
$IWCOMMAND frag $FRAG
fi
# More specific parameters
if [ -n "$IWCONFIG" ] ; then
echo "$0: $IWCOMMAND $IWCONFIG" | $LOGGER
$IWCOMMAND $IWCONFIG
fi
if [ -n "$IWSPY" ] ; then
echo "$0: $IWSPYCMD $IWSPY" | $LOGGER
$IWSPYCMD $IWSPY
fi
# The iwpriv can set one private IOCTL at the time, so if the $IWPRIV
# variable contqins multiple space separated settings, we split them here:
# WARNING: if your iwpriv commands contain a WEP/WPA key, these can be logged
# in /var/log/messages!
if [ -n "$IWPRIV" ] ; then
for iwi in $IWPRIV; do
echo "$0: $IWPRIVCMD set $iwi" | $LOGGER
$IWPRIVCMD set $iwi
done
fi
##################
# WPA_SUPPLICANT #
##################
# Support for WPA (wireless protected access) is provided by wpa_supplicant
# for those drivers that support it (and it looks like wpa_supplicant is
# the future for WPA support in Linux anyway)
if [ "$WPA" = "wpa_supplicant" ] || [ "$WPA" = "wpaxsupplicant" ] && [ -x ${SUPPATH}/wpa_supplicant ]; then
# Interface down, so wpa_supplicant can associate with the AP
$IFCOMMAND down
WPACONF=${WPACONF:-/etc/wpa_supplicant.conf}
WPA_OPTIONS=""
[ ${WPADRIVER} ] && WPA_OPTIONS="-D${WPADRIVER}" # specify the driver
[ ${WPA} = "wpaxsupplicant" ] && WPA_OPTIONS="${WPA_OPTIONS} -e" # Use external xsupplicant (disables the internal supplicant)
echo "$0: wpa_supplicant -Bw -c${WPACONF} ${WPA_OPTIONS} -i$INTERFACE" | $LOGGER
${SUPPATH}/wpa_supplicant -Bw -c${WPACONF} ${WPA_OPTIONS} -i$INTERFACE
# Buy wpa_supplicant some time to authenticate before bringing the
# interface back up... but we don't wait forever:
# You can increase this value if your card takes longer to associate:
WPAWAIT=10
wi=0
while [ $wi -lt $WPAWAIT ]; do
if (grep -q "^ctrl_interface=" ${WPACONF}); then
if (LC_ALL=C ${SUPPATH}/wpa_cli -i$INTERFACE status|grep -q "^wpa_state=COMPLETED"); then break; fi
else
if (LC_ALL=C ${IWCOMMAND}|grep -Eq "Encryption key:....-"); then break; fi
fi
wi=$(($wi+1)); sleep 1
done
if [ $wi -eq $WPAWAIT ]; then
echo "WPA authentication did not complete, try running '/etc/rc.d/rc.inet1 ${INTERFACE}_start' in a few seconds." | $LOGGER
fi
# Bring interface up to avoid 'not ready' errors when calling iwconfig
$IFCOMMAND up
sleep 1
else
# ESSID need to be last: most devices re-perform the scanning/discovery
# when this is set, and things like encryption keys had better be
# defined if we want to discover the right set of APs/nodes.
# NOTE: when automatic association does not work, but you manage to get
# an IP address by manually setting the ESSID and then calling dhcpcd,
# then the cause might be the incorrect definition of your ESSID="bla"
# parameter in rc.wireless.conf.
# Debug your wireless problems by running 'iwevent' while the card
# is being configured.
if [ -n "$ESSID" ] ; then
echo "$0: $IWCOMMAND essid $ESSID" | $LOGGER
$IWCOMMAND essid $ESSID
fi
fi