#!/bin/sh
#-
# Copyright (c) 2011 Nathan Whitehorn
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$

echo -n > $BSDINSTALL_TMPETC/wpa_supplicant.conf
chmod 0600 $BSDINSTALL_TMPETC/wpa_supplicant.conf

echo "ctrl_interface=/var/run/wpa_supplicant" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
echo "eapol_version=2" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
echo "ap_scan=1" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
echo "fast_reauth=1" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
echo >> $BSDINSTALL_TMPETC/wpa_supplicant.conf

# Try to reach wpa_supplicant. If it isn't running and we can modify the
# existing system, start it. Otherwise, fail.
(wpa_cli ping >/dev/null 2>/dev/null || ([ ! -z $BSDINSTALL_CONFIGCURRENT ] && \
	wpa_supplicant -B -i $1 -c $BSDINSTALL_TMPETC/wpa_supplicant.conf)) || \
	(dialog --backtitle "FreeBSD Installer" --title "Error" --msgbox \
	"Could not start wpa_supplicant!" 0 0; exit 1) || exit 1

# See if we succeeded
wpa_cli ping >/dev/null 2>/dev/null
if [ $? -ne 0 -a -z $BSDINSTALL_CONFIGCURRENT ]; then
	dialog --backtitle "FreeBSD Installer" --title "Error" --msgbox \
	"Wireless cannot be configured without making changes to the local system!" \ 0 0
	exit 1
fi

wpa_cli scan >>$BSDINSTALL_LOG
dialog --backtitle "FreeBSD Installer" --title "Scanning" --ok-label "Skip" \
	--pause "Waiting 5 seconds to scan for wireless networks..." \
	9 40 5 || exit 1

SCAN_RESULTS=`wpa_cli scan_results`
NETWORKS=`echo "$SCAN_RESULTS" | awk -F '\t' \
   '/..:..:..:..:..:../ {if (length($5) > 0) printf("\"%s\"\t%s\n", $5, $4);}' |
   sort | uniq`

if [ -z $SCAN_RESULTS ]; then
	dialog --backtitle "FreeBSD Installer" --title "Error" \
	    --yesno "No wireless networks were found. Rescan?" 0 0 && \
	    exec $0 $@
	exit 1
fi

exec 3>&1
NETWORK=`sh -c "dialog --extra-button --extra-label \"Rescan\" \
    --backtitle \"FreeBSD Installer\" --title \"Network Selection\" --menu \
    \"Select a wireless network to connect to.\" 0 0 0 \
    $(echo $NETWORKS | tr '\n' ' ')" 2>&1 1>&3`
case $? in
0)	# OK
	;;
1)	# Cancel
	exit 1
	;;
3)	# Rescan
	exec $0 $@
	;;
esac
exec 3>&-

ENCRYPTION=`echo "$NETWORKS" | awk -F '\t' \
    "/^\"$NETWORK\"\t/ {printf(\"%s\n\", \\\$2 );}"`

if echo $ENCRYPTION | grep -q 'PSK'; then
	exec 3>&1
	PASS=`dialog --insecure --backtitle "FreeBSD Installer" \
	    --title "WPA Setup" --mixedform "" 0 0 0 \
		"SSID" 1 0 "$NETWORK" 1 12 0 0 2 \
		"Password" 2 0 "" 2 12 15 0 1 \
		2>&1 1>&3` \
	|| exec $0 $@
	exec 3>&-
echo "network={
	ssid=\"$NETWORK\"
	psk=\"$PASS\"
	priority=5
}" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
elif echo $ENCRYPTION | grep -q WEP; then
	echo FOO
	exec 3>&1
	WEPKEY=`dialog --insecure --backtitle "FreeBSD Installer" \
	    --title "WEP Setup" --mixedform "" 0 0 0 \
		"SSID" 1 0 "$NETWORK" 1 12 0 0 2 \
		"WEP Key 0" 2 0 "" 2 12 15 0 1 \
		2>&1 1>&3` \
	|| exec $0 $@
echo "network={
	ssid=\"$NETWORK\"
	key_mgmt=NONE
	wep_key0=\"$WEPKEY\"
	wep_tx_keyidx=0
	priority=5
}" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
else	# Open
echo "network={
	ssid=\"$NETWORK\"
	key_mgmt=NONE
	priority=5
}" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf
fi

# Connect to any open networks policy
echo "network={
	priority=5
	key_mgmt=NONE
}" >> $BSDINSTALL_TMPETC/wpa_supplicant.conf

# Bring up new network
test ! -z $BSDINSTALL_CONFIGCURRENT && wpa_cli reconfigure >>$BSDINSTALL_LOG

exit 0