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authorTomás Touceda <chiiph@leap.se>2013-06-28 14:25:19 -0300
committerTomás Touceda <chiiph@leap.se>2013-06-28 14:25:19 -0300
commit5b975799ce9b7a6e0a88be4bcb48bdfb90800bb3 (patch)
treebda674a79b1aeccb37b67609517bc4761db7ae07 /src/leap/base/checks.py
parent9cea9c8a34343f8792d65b96f93ae22bd8685878 (diff)
parentc088a1544a5f7a51359d2802019c0740aab0cc5b (diff)
Merge branch 'release-0.2.2'0.2.2
Diffstat (limited to 'src/leap/base/checks.py')
-rw-r--r--src/leap/base/checks.py213
1 files changed, 0 insertions, 213 deletions
diff --git a/src/leap/base/checks.py b/src/leap/base/checks.py
deleted file mode 100644
index 0bf44f59..00000000
--- a/src/leap/base/checks.py
+++ /dev/null
@@ -1,213 +0,0 @@
-# -*- coding: utf-8 -*-
-import logging
-import platform
-import re
-import socket
-
-import netifaces
-import sh
-
-from leap.base import constants
-from leap.base import exceptions
-
-logger = logging.getLogger(name=__name__)
-_platform = platform.system()
-
-#EVENTS OF NOTE
-EVENT_CONNECT_REFUSED = "[ECONNREFUSED]: Connection refused (code=111)"
-
-ICMP_TARGET = "8.8.8.8"
-
-
-class LeapNetworkChecker(object):
- """
- all network related checks
- """
- def __init__(self, *args, **kwargs):
- provider_gw = kwargs.pop('provider_gw', None)
- self.provider_gateway = provider_gw
-
- def run_all(self, checker=None):
- if not checker:
- checker = self
- #self.error = None # ?
-
- # for MVS
- checker.check_tunnel_default_interface()
- checker.check_internet_connection()
- checker.is_internet_up()
-
- if self.provider_gateway:
- checker.ping_gateway(self.provider_gateway)
-
- checker.parse_log_and_react([], ())
-
- def check_internet_connection(self):
- if _platform == "Linux":
- try:
- output = sh.ping("-c", "5", "-w", "5", ICMP_TARGET)
- # XXX should redirect this to netcheck logger.
- # and don't clutter main log.
- logger.debug('Network appears to be up.')
- except sh.ErrorReturnCode_1 as e:
- packet_loss = re.findall("\d+% packet loss", e.message)[0]
- logger.debug("Unidentified Connection Error: " + packet_loss)
- if not self.is_internet_up():
- error = "No valid internet connection found."
- else:
- error = "Provider server appears to be down."
-
- logger.error(error)
- raise exceptions.NoInternetConnection(error)
-
- else:
- raise NotImplementedError
-
- def is_internet_up(self):
- iface, gateway = self.get_default_interface_gateway()
- try:
- self.ping_gateway(self.provider_gateway)
- except exceptions.NoConnectionToGateway:
- return False
- return True
-
- def _get_route_table_linux(self):
- # do not use context manager, tests pass a StringIO
- f = open("/proc/net/route")
- route_table = f.readlines()
- f.close()
- #toss out header
- route_table.pop(0)
- if not route_table:
- raise exceptions.NoDefaultInterfaceFoundError
- return route_table
-
- def _get_def_iface_osx(self):
- default_iface = None
- #gateway = None
- routes = list(sh.route('-n', 'get', ICMP_TARGET, _iter=True))
- iface = filter(lambda l: "interface" in l, routes)
- if not iface:
- return None, None
- def_ifacel = re.findall('\w+\d', iface[0])
- default_iface = def_ifacel[0] if def_ifacel else None
- if not default_iface:
- return None, None
- _gw = filter(lambda l: "gateway" in l, routes)
- gw = re.findall('\d+\.\d+\.\d+\.\d+', _gw[0])[0]
- return default_iface, gw
-
- def _get_tunnel_iface_linux(self):
- # XXX review.
- # valid also when local router has a default entry?
- route_table = self._get_route_table_linux()
- line = route_table.pop(0)
- iface, destination = line.split('\t')[0:2]
- if not destination == '00000000' or not iface == 'tun0':
- raise exceptions.TunnelNotDefaultRouteError()
- return True
-
- def check_tunnel_default_interface(self):
- """
- Raises an TunnelNotDefaultRouteError
- if tun0 is not the chosen default route
- (including when no routes are present)
- """
- #logger.debug('checking tunnel default interface...')
-
- if _platform == "Linux":
- valid = self._get_tunnel_iface_linux()
- return valid
- elif _platform == "Darwin":
- default_iface, gw = self._get_def_iface_osx()
- #logger.debug('iface: %s', default_iface)
- if default_iface != "tun0":
- logger.debug('tunnel not default route! gw: %s', default_iface)
- # XXX should catch this and act accordingly...
- # but rather, this test should only be launched
- # when we have successfully completed a connection
- # ... TRIGGER: Connection stablished (or whatever it is)
- # in the logs
- raise exceptions.TunnelNotDefaultRouteError
- else:
- #logger.debug('PLATFORM !!! %s', _platform)
- raise NotImplementedError
-
- def _get_def_iface_linux(self):
- default_iface = None
- gateway = None
-
- route_table = self._get_route_table_linux()
- while route_table:
- line = route_table.pop(0)
- iface, destination, gateway = line.split('\t')[0:3]
- if destination == '00000000':
- default_iface = iface
- break
- return default_iface, gateway
-
- def get_default_interface_gateway(self):
- """
- gets the interface we are going thru.
- (this should be merged with check tunnel default interface,
- imo...)
- """
- if _platform == "Linux":
- default_iface, gw = self._get_def_iface_linux()
- elif _platform == "Darwin":
- default_iface, gw = self._get_def_iface_osx()
- else:
- raise NotImplementedError
-
- if not default_iface:
- raise exceptions.NoDefaultInterfaceFoundError
-
- if default_iface not in netifaces.interfaces():
- raise exceptions.InterfaceNotFoundError
- logger.debug('-- default iface %s', default_iface)
- return default_iface, gw
-
- def ping_gateway(self, gateway):
- # TODO: Discuss how much packet loss (%) is acceptable.
-
- # XXX -- validate gateway
- # -- is it a valid ip? (there's something in util)
- # -- is it a domain?
- # -- can we resolve? -- raise NoDNSError if not.
-
- # XXX -- sh.ping implemtation needs review!
- try:
- output = sh.ping("-c", "10", gateway).stdout
- except sh.ErrorReturnCode_1 as e:
- output = e.message
- finally:
- packet_loss = int(re.findall("(\d+)% packet loss", output)[0])
-
- logger.debug('packet loss %s%%' % packet_loss)
- if packet_loss > constants.MAX_ICMP_PACKET_LOSS:
- raise exceptions.NoConnectionToGateway
-
- def check_name_resolution(self, domain_name):
- try:
- socket.gethostbyname(domain_name)
- return True
- except socket.gaierror:
- raise exceptions.CannotResolveDomainError
-
- def parse_log_and_react(self, log, error_matrix=None):
- """
- compares the recent openvpn status log to
- strings passed in and executes the callbacks passed in.
- @param log: openvpn log
- @type log: list of strings
- @param error_matrix: tuples of strings and tuples of callbacks
- @type error_matrix: tuples strings and call backs
- """
- for line in log:
- # we could compile a regex here to save some cycles up -- kali
- for each in error_matrix:
- error, callbacks = each
- if error in line:
- for cb in callbacks:
- if callable(cb):
- cb()