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#!/bin/sh
has_wps(){
# the-wpa_supplicant-encryption-string
echo "$1" | grep -q "\[WPS\]"
}
try_wps_pin(){
#
# ESSID MAC CHANNEL ENC WPA WPA2 PIN
#set -ef
ESSID="$1"
MAC="$2"
CHANNEL="$3"
# TODO refactor to use all the encryption
# the wpa_supplicant encryption string
ENC="$4"
PIN="$5"
[ "$ENC" == "[ESS]" ] && return 2
WPA_CONF=/tmp/wpa_trywps.conf
WPA_LOG=/tmp/wpa_trywps.log
rm $WPA_LOG
#mkfifo $WPA_LOG
killall wpa_supplicant 2>/dev/null && sleep 1
cat > $WPA_CONF <<EOF
ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=0
update_config=1
EOF
wpa_supplicant -Dwext -iwlan0 -c $WPA_CONF -f $WPA_LOG 2>&1 &
WPA_PID=$!
sleep 2
if !(sudo wpa_cli wps_reg $MAC $PIN | grep -q OK) ;then
echo "wpa_cli wps_reg failed, bailing out!"
return 1
fi
# association failed
# exit 1 ;;
# TODO probably not posix compatible...
timeout(){
( timeout=10;
while [ $timeout -gt 0 ]; do
sleep 1;
kill -0 $$ 2> /dev/null || exit 0;
: $((timeout--));
done ;
echo "TIMEOUT REACHED" ;
kill $$)&
exec $@
}
if ( timeout tail -f $WPA_LOG & echo "TAILPID: $!") | while read line ; do
bye(){
printf "%s:" "$2" >&2
kill $WPA_PID
kill -HUP $TAILPID
exit $1
}
# DEBUG
#echo $line >&2
case "$line" in
TAILPID:*)IFS=" " set -- $line; TAILPID=$2;;
*"WPS-FAIL msg=10 config_error=18"*) bye 1 "wrong pin";;
*"CTRL-EVENT-EAP-FAILURE EAP authentication failed"*) bye 1 "rate limiting";;
#*"Association request to the driver failed") bye 1 "wps not available";;
#*CTRL-EVENT-DISCONNECTED*):;;
*"CTRL-EVENT-DISCONNECTED bssid="*"reason=3 locally_generated=1"*)bye 1 "authentication failed, wps deactivated?";;
"TIMEOUT REACHED")bye 1 "timeout reached";;
*CTRL-EVENT-TERMINATING*) bye 1 "wpa_supplicant died";;
*CTRL-EVENT-CONNECTED*) bye 0 "yay connected";;
esac
done ; then
#echo "Connected!"
sed -n 's/[ \t]*psk="\(.*\)"$/\1/p' "$WPA_CONF"
return 0
else
#echo "failed!"
return 1
fi
}
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