#!/usr/bin/env python
#
#    NEPI, a framework to manage network experiments
#    Copyright (C) 2013 INRIA
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# Author: Alina Quereilhac <alina.quereilhac@inria.fr>

from nepi.execution.ec import ExperimentController 

from test_utils import skipIfAnyNotAlive

import os
import time
import unittest

class UdpTunnelTestCase(unittest.TestCase):
    def setUp(self):
        self.host1 = "nepi2.pl.sophia.inria.fr"
        self.host2 = "nepi5.pl.sophia.inria.fr"
        self.user = "inria_nepi"

    @skipIfAnyNotAlive
    def t_tap_udp_tunnel(self, user, host1, host2):

        ec = ExperimentController(exp_id = "test-tap-udp-tunnel")
        
        node1 = ec.register_resource("PlanetlabNode")
        ec.set(node1, "hostname", host1)
        ec.set(node1, "username", user)
        ec.set(node1, "cleanHome", True)
        ec.set(node1, "cleanProcesses", True)

        tap1 = ec.register_resource("PlanetlabTap")
        ec.set(tap1, "ip4", "192.168.1.1")
        ec.set(tap1, "pointopoint", "192.168.1.2")
        ec.set(tap1, "prefix4", 24)
        ec.register_connection(tap1, node1)

        node2 = ec.register_resource("PlanetlabNode")
        ec.set(node2, "hostname", host2)
        ec.set(node2, "username", user)
        ec.set(node2, "cleanHome", True)
        ec.set(node2, "cleanProcesses", True)

        tap2 = ec.register_resource("PlanetlabTap")
        ec.set(tap2, "ip4", "192.168.1.2")
        ec.set(tap2, "pointopoint", "192.168.1.1")
        ec.set(tap2, "prefix4", 24)
        ec.register_connection(tap2, node2)

        udptun = ec.register_resource("UdpTunnel")
        ec.register_connection(tap1, udptun)
        ec.register_connection(tap2, udptun)

        app = ec.register_resource("LinuxApplication")
        cmd = "ping -c3 192.168.1.2"
        ec.set(app, "command", cmd)
        ec.register_connection(app, node1)

        ec.deploy()

        ec.wait_finished(app)

        ping = ec.trace(app, 'stdout')
        expected = """3 packets transmitted, 3 received, 0% packet loss"""
        self.assertTrue(ping.find(expected) > -1)
        
        if_name = ec.get(tap1, "deviceName")
        self.assertTrue(if_name.startswith("tap"))
        
        if_name = ec.get(tap2, "deviceName")
        self.assertTrue(if_name.startswith("tap"))

        ec.shutdown()

    @skipIfAnyNotAlive
    def t_tun_udp_tunnel(self, user, host1, host2):

        ec = ExperimentController(exp_id = "test-tap-udp-tunnel")
        
        node1 = ec.register_resource("PlanetlabNode")
        ec.set(node1, "hostname", host1)
        ec.set(node1, "username", user)
        ec.set(node1, "cleanHome", True)
        ec.set(node1, "cleanProcesses", True)

        tun1 = ec.register_resource("PlanetlabTun")
        ec.set(tun1, "ip4", "192.168.1.1")
        ec.set(tun1, "pointopoint", "192.168.1.2")
        ec.set(tun1, "prefix4", 24)
        ec.register_connection(tun1, node1)

        node2 = ec.register_resource("PlanetlabNode")
        ec.set(node2, "hostname", host2)
        ec.set(node2, "username", user)
        ec.set(node2, "cleanHome", True)
        ec.set(node2, "cleanProcesses", True)

        tun2 = ec.register_resource("PlanetlabTun")
        ec.set(tun2, "ip4", "192.168.1.2")
        ec.set(tun2, "pointopoint", "192.168.1.1")
        ec.set(tun2, "prefix4", 24)
        ec.register_connection(tun2, node2)

        udptun = ec.register_resource("UdpTunnel")
        ec.register_connection(tun1, udptun)
        ec.register_connection(tun2, udptun)

        app = ec.register_resource("LinuxApplication")
        cmd = "ping -c3 192.168.1.2"
        ec.set(app, "command", cmd)
        ec.register_connection(app, node1)

        ec.deploy()

        ec.wait_finished(app)

        ping = ec.trace(app, 'stdout')
        expected = """3 packets transmitted, 3 received, 0% packet loss"""
        self.assertTrue(ping.find(expected) > -1)
        
        if_name = ec.get(tun1, "deviceName")
        self.assertTrue(if_name.startswith("tun"))
        
        if_name = ec.get(tun2, "deviceName")
        self.assertTrue(if_name.startswith("tun"))

        ec.shutdown()

    def test_tap_udp_tunnel(self):
        self.t_tap_udp_tunnel(self.user, self.host1, self.host2)

    def test_tun_udp_tunnel(self):
        self.t_tun_udp_tunnel(self.user, self.host1, self.host2)

if __name__ == '__main__':
    unittest.main()