#!/bin/sh

if [ ! -f "$1" ]; then
	echo "usage: $(basename "$0") FILE"
	exit 1
fi

. "$(readlink -f "$1")"

DEV="gt${HOST:+c}-$(basename "$1")"

# Setting BIND is like going to 'expert mode'
# This helper is pretty stupid and still needs some work
if [ -n "$HOST" ] && [ -z "$BIND" ]; then
	BIND=$(ip route get "$HOST" | awk '/src/{getline;print $0}' RS=' ')
	ip rule add from "$BIND" table main pref 32000
	ip rule add from all table 200 pref 32001
fi

exec glorytun \
	v4only \
	keyfile "$1".key \
	dev "$DEV" \
	${HOST:+host "$HOST"} \
	${PORT:+port "$PORT"} \
	${BIND:+bind "$BIND"} \
	${BIND_PORT:+bind-port "$BIND_PORT"} \
	${MTU:+mtu "$MTU"} \
	${MTU_AUTO:+mtu-auto}