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#!/bin/sh
set -e
# manual configuration of wifi made a little bit easier with wpa_supplicant
session="wpa"
t=3
interface=
nwid=
wpakey=
help() {
cat <<EOF
$0 [-i <interface>] [-n <network_name>] [-p <password>]
EOF
exit 1;
}
while [ $# -gt 0 ] ; do case $1 in
-i|if) interface="$2"; shift ; shift ;;
-n|nwid) nwid="$2"; shift ; shift ;;
-p|wpakey) wpakey="$2"; shift ; shift ;;
*) help ;;
esac ; done
err=0
for _v in interface nwid wpakey ; do
eval v="\$$_v";
if [ -z "$v" ] ; then
echo "$_v cannot be empty"
err=1
fi
done
if [ $err -eq 1 ] ; then exit 1 ; fi
wpakey="$(echo "$wpakey" | sed -e's/"/\\"/g')"
conf_f="$(mktemp /dev/shm/wpa.XXXX)"
trap 'rm -f $conf_f; exit 1;' EXIT INT
cat > "$conf_f" <<EOF
network={
ssid="$nwid"
scan_ssid=1
key_mgmt=WPA-PSK
psk="$wpakey"
}
EOF
if tmux ls -F '#{session_name}' | grep -q "^$session\$" ; then
exec tmux att -t "$session"
fi
tmux new-session -s "$session" \;\
send-keys -t "${session}:0" "sudo wpa_supplicant -i \"$interface\" -c \"$conf_f\"" \;\
send-keys -t "${session}:0" Enter \;\
new-window -n "dhclient" -t 1 \;\
send-keys -t "${session}:1" "sleep $t ; sudo dhclient -d -i \"$interface\"" \;\
send-keys -t "${session}:1" Enter \;\
select-window -t "${session}:0" \;\
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