#!/bin/sh
# opens a ssh tunnel and starts a new firefox instance
# configure your firefox profil to use the ssh tunnel

user=$USER
host=$(hostname)
port=9999

url=$user@$host

while [ $# -ne 0 ]; do
	case "$1" in
		-u|--url)
			if [ "x$2" = "x" ]; then
				echo "$1 requires an argument. Abort." 1>&2
				exit 1
			else
				url="$2"
			fi
			shift
			shift
			;;
		-h|--host)
			if [ "x$2" = "x" ]; then
				echo "$1 requires an argument. Abort." 1>&2
				exit 1
			else
				host="$2"
			fi
			shift
			shift
			;;
		-p|--port)
			if [ "x$2" = "x" ]; then
				echo "$1 requires an argument. Abort." 1>&2
				exit 1
			else
				port="$2"
			fi
			shift
			shift
			;;
		*)
			echo "Usage: '$(basename $0) [-u HOST] [-p PORT]'"
			echo "Default connection is set to $url:$port"
			exit 1
	esac
done


if [ "x$host" = x ]; then
	echo "No host given. Abort." 1>&2
	exit 1
fi

if [ "x$port" = x ]; then
	echo "No pott given. Abort." 1>&2
	exit 1
fi

if [ x$(netstat -tulpen 2>/dev/null | grep 127.0.0.1:$port | head -1 | cut -d "/" -f2) = "xssh" ]; then
	echo "Using existing ssh tunnel."
else
	nohup ssh -f -N $url -D $port >>/tmp/nohub.ssh$port.log 2>&1 & 
	if [ $? -ne 0 ]; then
		echo "Failed to create the ssh tunnel. Read /tmp/nohub.ssh$port.log for more information."
		exit 1
	fi
fi

nohup firefox -no-remote -P proxy >>/tmp/nohub.fx.log 2>&1 &
if [ $? -ne 0 ]; then
	echo "Failed to start Firefox. Read /tmp/nohub.fx.log for more information."
	exit 1
fi

echo "Proxying all traffic through '$url:$port'."
exit 0