#! /bin/sh## wlan 1.1 by Mark S. Mathews## Most of this file was  copied from the 'network' script written# by David Hinds, author of the Linux PCMCIA package.## Initialize or shutdown a PCMCIA 802.11 wireless lan adapter## This script should be invoked as follows:#  wlan [start|check|stop|suspend|resume] [device name]# e.g.#  wlan start eth0## The script passes an extended device address to 'wlan.opts' in# the ADDRESS variable, to retrieve device-specific configuration# options.  The address format is "scheme,socket,instance,hwaddr"# where "scheme" is the current PCMCIA device configuration scheme,# "socket" is the socket number, "instance" is used to number multiple# interfaces in a single socket, and "hwaddr" is the card's hardware# ethernet address.#. ./shared# set -x # Get device attributesget_info $DEVICEHWADDR=`/sbin/ifconfig $DEVICE | sed -n -e 's/.*addr \(.*\)/\1/p'`# Load site-specific settingsADDRESS="$SCHEME,$SOCKET,$INSTANCE,$HWADDR". $0.optscase "$ACTION" in'start')	# Scan for existing networks	echo "wlan scanning channels $STARTCH to $ENDCH"	netlist=`wlanctl $DEVICE scan \		$SCAN_STARTCH $SCAN_ENDCH $SCAN_TIMEPERCHANNEL \		$SCAN_BSSID $SCAN_BSSTYPE $SCAN_TYPE "$SCAN_SSID"`	echo "Detected BSSs:"	echo "ch  bssid              bcn   cap_info  ssid"	echo "------------------------------------------------------"	echo "$netlist"		# Set your wep keys, if present	# MSM: setting them works, but there's no cypher so strange things	#      might happen.	if is_true $PRIVACY ; then		wlanctl $DEVICE privacy \			$EXCLUDE \			$WEP_DEFKEY \			$WEP_KEY1 \			$WEP_KEY2 \			$WEP_KEY3 \			$WEP_KEY4	fi	# Set the ethernet conversion	wlanctl $DEVICE ethconv $P80211_CONVERSION	# If our $SCAN_SSID matches one found in the scan, join it.  	#  else, check to see if we're allowed to create one.	if (echo "$netlist" | grep -q "$DESIRED_SSID") ; then		join_bssinfo=`(echo "$netlist" | grep "$DESIRED_SSID")`		join_ssid=$DESIRED_SSID		join_bssid=`(echo "$join_bssinfo" | cut -c5-21)`		join_channel=`(echo "$join_bssinfo" | cut -c1-2)`		join_capinfo=`(echo "$join_bssinfo" | cut -c30-35)`		wlanctl $DEVICE bssjoin $join_bssid		echo "wlan joined BSS, channel=$join_channel"\		     "bssid=$join_bssid ssid=\"$DESIRED_SSID\""		# Now see if we need to auth and assoc w/ an infra bss		if is_true $SNIFONLY; then			echo "wlan skipping auth and assoc for sniffer"		else			ISIBSS=$[$join_capinfo & 0x02]			if [ $ISIBSS -eq 0 ]; then				wlanctl $DEVICE authen				wlanctl $DEVICE assoc			fi		fi	else		# If we're allowed, create a bss		if is_true $CREATEBSS ; then			wlanctl $DEVICE bsscreate \				$CREATE_CHANNEL $CREATE_BCN_INT 0 \				"$CREATE_SSID"			echo "wlan created BSS with" \				"channel=$CREATE_CHANNEL and" \				"ssid=$CREATE_SSID"			$DESIRED_SSID=$CREATE_SSID		else			echo "wlan failed to find ssid=$DESIRED_SSID"			exit 1		fi	fi	# Set the scheme to be our SSID, this allows us to set up	#  multiple settings for different locations in the network.opts file.	echo "$DESIRED_SSID" > /var/run/pcmcia-scheme	# Now initialize the network interface in the normal way	./network $1 $2	exit $?	;;'stop'|'check'|'cksum'|'restart'|'suspend'|'resume')	# Just handle it the same as any other net device	echo calling network script	./network $1 $2	reval=$?	#  nothing else for now...	exit $retval    ;;*)    usage    ;;esacexit 0