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|
#!/bin/sh
case "$METHOD" in loopback) exit 0 ;; esac
#
# This script takes care of bringing up wlan-ng device.
# It is run by ifup, and gets information from the
# /etc/network/interfaces file. It is derived from the
# init.d/wlan script in the wlan-ng distribution
WLANCTL=/sbin/wlanctl-ng
PRIV_GENERATOR=/sbin/nwepgen
if [ ! -x $WLANCTL ] ; then
exit 0
fi
# Detect and act only on linux-wlan-ng interfaces
if [ "$IF_WIRELESS_TYPE" != "wlan-ng" ]; then
exit 0
fi
# Create a lock file; remove on script exit. This is a fairly crummy lock,
# but all it needs to do is prevent hotplug from calling this script,
# which may happen when the module is loaded below. Since it should only
# happen when the module is loaded, I don't need a proper lock.
if [ -e /var/lock/wlan-$IFACE.lock ]; then
exit 0
fi
touch /var/lock/wlan-$IFACE.lock
cleanup () {
rm -f /var/lock/wlan-$IFACE.lock
}
trap cleanup 0
if [ -z "$IF_WIRELESS_MODE" ]; then
IF_WIRELESS_MODE="ad_hoc"
fi
if [ -z "$IF_WLAN_NG_HOSTWEP" ]; then
IF_WLAN_NG_HOSTWEP=false
fi
if [ -z "$IF_WLAN_NG_DEFAULT_KEY_ID" ]; then
IF_WLAN_NG_DEFAULT_KEY_ID=0
fi
if [ -z "$IF_WLAN_NG_EXCLUDE_UNENCRYPTED" ]; then
IF_WLAN_NG_EXCLUDE_UNENCRYPTED=true
fi
if [ -z "$IF_WLAN_NG_PRIV_KEY128" ]; then
IF_WLAN_NG_PRIV_KEY128=false
fi
if [ -z "$IF_WLAN_NG_BCINT" ]; then
IF_WLAN_NG_BCINT=100
fi
if [ -z "$IF_WLAN_NG_BASICRATES" ]; then
IF_WLAN_NG_BASICRATES="2 4"
fi
if [ -z "$IF_WLAN_NG_OPRATES" ]; then
IF_WLAN_NG_OPRATES="2 4 11 22"
fi
if [ -z "$IF_WLAN_NG_AUTHTYPE" ]; then
IF_WLAN_NG_AUTHTYPE="opensystem"
fi
if [ -z "$IF_WIRELESS_CHANNEL" ]; then
IF_WIRELESS_CHANNEL=1
fi
if ! modprobe p80211; then
echo "Failed to load p80211.o." >&2
exit 1
fi
# NOTE: We don't explicitly insmod the card driver here. The
# best thing to do is to specify an alias in /etc/modules.conf.
# Then, the first time we call wlanctl with the named device,
# the kernel module autoload stuff will take over.
# But, if you prefer, you could modprobe it here.
# Bring the card up into an operable state.
result=`$WLANCTL $IFACE lnxreq_ifstate ifstate=enable`
if [ $? = 0 ] ; then
eval $result
if [ $resultcode != "success" ]; then
echo "Failed to enable the device, resultcode=" $resultcode "." >&2
exit 1
fi
else
echo "Failed to enable the device, exitcode=" $? "." >&2
exit 1
fi
# Set user-specified MIB items.
for i in $IF_WLAN_NG_USER_MIBS; do
result=`$WLANCTL $IFACE dot11req_mibset "mibattribute=$i"`
if [ $? = 0 ] ; then
eval $result
if [ $resultcode != "success" ] ; then
echo "Failed to set user MIB $i." >&2
exit 1
fi
else
echo "Failed to set user MIB $i." >&2
exit 1
fi
done
if [ "$IF_WIRELESS_ENC" = "on" ]; then
# Set up WEP.
result=`$WLANCTL $IFACE dot11req_mibget mibattribute=dot11PrivacyOptionImplemented`
if [ $? = 0 ] ; then
eval $result
eval $mibattribute
else
echo "mibget failed." >&2
exit 1
fi
if [ "$dot11PrivacyOptionImplemented" != "true" ]; then
echo "Cannot enable privacy, dot11PrivacyOptionImplemented=$dot11PrivacyOptionImplemented." >&2
exit 1
fi
$WLANCTL $IFACE lnxreq_hostwep decrypt=$IF_WLAN_NG_HOSTWEP encrypt=$IF_WLAN_NG_HOSTWEP >/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKeyID=$IF_WLAN_NG_DEFAULT_KEY_ID \
>/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11ExcludeUnencrypted=$IF_WLAN_NG_EXCLUDE_UNENCRYPTED \
>/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11PrivacyInvoked=true >/dev/null
if [ -e "$IF_WLAN_NG_KEYFILE" ]; then
IF_WLAN_NG_PRIV_GENSTR=`cat $IF_WLAN_NG_KEYFILE`
fi
if [ ! -z "$IF_WLAN_NG_PRIV_GENSTR" ]; then
if [ "$IF_WLAN_NG_PRIV_KEY128" = "false" ]; then
keys=`$PRIV_GENERATOR "$IF_WLAN_NG_PRIV_GENSTR" 5`
else
keys=`$PRIV_GENERATOR "$IF_WLAN_NG_PRIV_GENSTR" 13`
fi
knum=0
for i in $keys; do
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKey$knum=$i \
>/dev/null
knum=$(expr $knum + 1)
done
else
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKey0=$IF_WLAN_NG_KEY0 \
>/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKey1=$IF_WLAN_NG_KEY1 \
>/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKey2=$IF_WLAN_NG_KEY2 \
>/dev/null
$WLANCTL $IFACE dot11req_mibset \
mibattribute=dot11WEPDefaultKey3=$IF_WLAN_NG_KEY3 \
>/dev/null
fi
fi
# MAC startup
if [ "$IF_WIRELESS_MODE" = "ad_hoc" ] ||
[ "$IF_WIRELESS_MODE" = "ad-hoc" ]; then
startcmd="$WLANCTL $IFACE dot11req_start "
startcmd="$startcmd ssid=$IF_WIRELESS_ESSID"
startcmd="$startcmd bsstype=independent"
startcmd="$startcmd beaconperiod=$IF_WLAN_NG_BCINT"
startcmd="$startcmd dtimperiod=3"
startcmd="$startcmd cfpollable=false"
startcmd="$startcmd cfpollreq=false"
startcmd="$startcmd cfpperiod=3"
startcmd="$startcmd cfpmaxduration=100"
startcmd="$startcmd probedelay=100"
startcmd="$startcmd dschannel=$IF_WIRELESS_CHANNEL"
j=1
for i in $IF_WLAN_NG_BASICRATES; do
startcmd="$startcmd basicrate$j=$i"
j=$(expr $j + 1)
done
j=1
for i in $IF_WLAN_NG_OPRATES; do
startcmd="$startcmd operationalrate$j=$i"
j=$(expr $j + 1)
done
results=`$startcmd`
if [ $? = 0 ]; then
eval $results
if [ $resultcode != "success" ] ; then
echo "IBSS not started, resultcode=$resultcode" >&2
exit 1
fi
else
echo FAILED: $startcmd >&2
exit 1
fi
else
# Infrastructure mode.
results=`$WLANCTL $IFACE lnxreq_autojoin \
"ssid=$IF_WIRELESS_ESSID" \
authtype=$IF_WLAN_NG_AUTHTYPE | sed 's/\([^=]*\)=\(.*\)/\1="\2"/'`
if [ $? = 0 ]; then
eval $results
if [ ${resultcode:-"failure"} != "success" ]; then
echo 'error: Autojoin indicated failure!' >&2
exit 1
fi
fi
fi
|
