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authorantialias <antialias@leap.se>2012-09-28 18:15:47 -0400
committerantialias <antialias@leap.se>2012-09-28 18:15:47 -0400
commit202345940e12d4633c5d46d5ed21c3a433573d48 (patch)
tree7ec77cca7a68c2acccf0c8ff02e5d9a42d0b5d74 /src/leap
parent3fd7b55de96484e02accb991fb2c0c3ce0aa9883 (diff)
Added check that default route is tun0.
Diffstat (limited to 'src/leap')
-rw-r--r--src/leap/base/checks.py27
-rw-r--r--src/leap/base/exceptions.py4
-rw-r--r--src/leap/base/tests/test_checks.py30
3 files changed, 61 insertions, 0 deletions
diff --git a/src/leap/base/checks.py b/src/leap/base/checks.py
index c5438b09..a775e162 100644
--- a/src/leap/base/checks.py
+++ b/src/leap/base/checks.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
+import logging
import platform
import ping
@@ -8,6 +9,7 @@ import requests
from leap.base import constants
from leap.base import exceptions
+logger = logging.getLogger(name=__name__)
class LeapNetworkChecker(object):
"""
@@ -22,6 +24,7 @@ class LeapNetworkChecker(object):
self.error = None # ?
# for MVS
+ checker.check_tunnel_default_interface()
checker.check_internet_connection()
checker.is_internet_up()
checker.ping_gateway()
@@ -40,11 +43,35 @@ class LeapNetworkChecker(object):
else:
error = "Provider server appears to be down."
raise exceptions.NoInternetConnection(error)
+ logger.debug('Network appears to be up.')
def is_internet_up(self):
iface, gateway = self.get_default_interface_gateway()
self.ping_gateway(self)
+ def check_tunnel_default_interface(self):
+ """
+ Raises an TunnelNotDefaultRouteError
+ (including when no routes are present)
+ """
+ if not platform.system() == "Linux":
+ raise NotImplementedError
+
+ f = open("/proc/net/route")
+ route_table = f.readlines()
+ f.close()
+ #toss out header
+ route_table.pop(0)
+
+ if not route_table:
+ raise exceptions.TunnelNotDefaultRouteError()
+
+ line = route_table.pop(0)
+ iface, destination = line.split('\t')[0:2]
+ if not destination == '00000000' or not iface == 'tun0':
+ raise exceptions.TunnelNotDefaultRouteError()
+
+
def get_default_interface_gateway(self):
"""only impletemented for linux so far."""
if not platform.system() == "Linux":
diff --git a/src/leap/base/exceptions.py b/src/leap/base/exceptions.py
index 7771d1f9..48d827f5 100644
--- a/src/leap/base/exceptions.py
+++ b/src/leap/base/exceptions.py
@@ -23,3 +23,7 @@ class NoConnectionToGateway(Exception):
class NoInternetConnection(Exception):
message = "No Internet connection found"
+
+
+class TunnelNotDefaultRouteError(Exception):
+ message = "VPN Maybe be down."
diff --git a/src/leap/base/tests/test_checks.py b/src/leap/base/tests/test_checks.py
index a3b3ea91..30746991 100644
--- a/src/leap/base/tests/test_checks.py
+++ b/src/leap/base/tests/test_checks.py
@@ -31,6 +31,8 @@ class LeapNetworkCheckTest(BaseLeapTest):
self.assertTrue(hasattr(checker, "check_internet_connection"),
"missing meth")
+ self.assertTrue(hasattr(checker, "check_tunnel_default_interface"),
+ "missing meth")
self.assertTrue(hasattr(checker, "is_internet_up"),
"missing meth")
self.assertTrue(hasattr(checker, "ping_gateway"),
@@ -42,6 +44,7 @@ class LeapNetworkCheckTest(BaseLeapTest):
mc = Mock()
checker.run_all(checker=mc)
self.assertTrue(mc.check_internet_connection.called, "not called")
+ self.assertTrue(mc.check_tunnel_default_interface.called, "not called")
self.assertTrue(mc.ping_gateway.called, "not called")
self.assertTrue(mc.is_internet_up.called, "not called")
@@ -55,6 +58,33 @@ class LeapNetworkCheckTest(BaseLeapTest):
"Mask\tMTU\tWindow\tIRTT")
checker.get_default_interface_gateway()
+ def test_check_tunnel_default_interface(self):
+ checker = checks.LeapNetworkChecker()
+ with patch('leap.base.checks.open', create=True) as mock_open:
+ with self.assertRaises(exceptions.TunnelNotDefaultRouteError):
+ mock_open.return_value = StringIO(
+ "Iface\tDestination Gateway\t"
+ "Flags\tRefCntd\tUse\tMetric\t"
+ "Mask\tMTU\tWindow\tIRTT")
+ checker.check_tunnel_default_interface()
+
+ with patch('leap.base.checks.open', create=True) as mock_open:
+ with self.assertRaises(exceptions.TunnelNotDefaultRouteError):
+ mock_open.return_value = StringIO(
+ "Iface\tDestination Gateway\t"
+ "Flags\tRefCntd\tUse\tMetric\t"
+ "Mask\tMTU\tWindow\tIRTT\n"
+ "wlan0\t00000000\t0102A8C0\t0003\t0\t0\t0\t00000000\t0\t0\t0")
+ checker.check_tunnel_default_interface()
+
+ with patch('leap.base.checks.open', create=True) as mock_open:
+ mock_open.return_value = StringIO(
+ "Iface\tDestination Gateway\t"
+ "Flags\tRefCntd\tUse\tMetric\t"
+ "Mask\tMTU\tWindow\tIRTT\n"
+ "tun0\t00000000\t01002A0A\t0003\t0\t0\t0\t00000080\t0\t0\t0")
+ checker.check_tunnel_default_interface()
+
def test_ping_gateway_fail(self):
checker = checks.LeapNetworkChecker()
with patch.object(ping, "quiet_ping") as mocked_ping: