#!/bin/sh

# wpa_supplicant -i wlp4s0 -c wpa/banagoat.conf

__usage() {
cat <<EOF
$0 <interface> nwid "<ssid>" wpakey "<wpa_passwd>"
OR
$0 <interface> list
EOF
exit 1;
}

_cfg='network={
	ssid="%s"
	scan_ssid=1
	key_mgmt=WPA-PSK
	psk="%s"
}'

_nwid=""
_wpakey=""

# Can and probably will be overridden
# _if="$(ip link | awk '/^[0-9]+.*wl/{print $2}' | sed -e's/:$//' | tr -d '\n')"
[ -z "$1" ] && __usage
_if="$1" ; shift

if [ "$1" = "list" ] ; then
	iw "$_if" scan | awk '/SSID:/{$1="";print $0}' | sed -ne's/^ //p'
	exit 0;
fi

_temp="$(mktemp -p /dev/shm)"

while [ $# -gt 0 ] ; do case $1 in
	nwid) _nwid="$2"; shift; shift ;;
	wpakey) _wpakey="$2"; shift; shift ;;
	*) __usage ;;
esac ; done

[ -z "$_nwid" ]		&& __usage
[ -z "$_wpakey" ]	&& __usage

# Write the config
printf "$_cfg" "$_nwid" "$_wpakey" > "$_temp"


tmux new-session -s wpa wpa_supplicant -i "$_if" -c "$_temp" \;\
	new-window busybox udhcpc -i "$_if" -f



rm -f "$_temp"