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"""
Base Connection Classs
"""
from __future__ import (division, unicode_literals, print_function)
#import threading
from functools import partial
import logging
from leap.utils.coroutines import spawn_and_watch_process
from leap.baseapp.config import get_config, get_vpn_stdout_mockup
from leap.eip.vpnwatcher import EIPConnectionStatus, status_watcher
from leap.eip.vpnmanager import OpenVPNManager, ConnectionRefusedError
from leap.Configuration import Configuration
from leap.Authentication import Authentication
logger = logging.getLogger(name=__name__)
class Connection(Configuration, Authentication):
def __init__(self, *args, **kwargs):
self.connection_state = None
self.desired_connection_state = None
super(Connection, self).__init__(*args, **kwargs)
def connect(self):
"""
entry point for connection process
"""
pass
def disconnect(self):
"""
disconnects client
"""
pass
def shutdown(self):
"""
shutdown and quit
"""
self.desired_con_state = self.status.DISCONNECTED
def connection_state(self):
"""
returns the current connection state
"""
return self.status.current
def desired_connection_state(self):
"""
returns the desired_connection state
"""
return self.desired_connection_state
def poll_connection_state(self):
"""
"""
try:
state = self.get_connection_state()
except ConnectionRefusedError:
# connection refused. might be not ready yet.
return
if not state:
return
(ts, status_step,
ok, ip, remote) = state
self.status.set_vpn_state(status_step)
status_step = self.status.get_readable_status()
return (ts, status_step, ok, ip, remote)
def get_icon_name(self):
"""
get icon name from status object
"""
return self.status.get_state_icon()
#
# private methods
#
def _disconnect(self):
"""
private method for disconnecting
"""
if self.subp is not None:
self.subp.terminate()
self.subp = None
# XXX signal state changes! :)
def _is_alive(self):
"""
don't know yet
"""
pass
def _connect(self):
"""
entry point for connection cascade methods.
"""
#conn_result = ConState.DISCONNECTED
try:
conn_result = self._try_connection()
except UnrecoverableError as except_msg:
logger.error("FATAL: %s" % unicode(except_msg))
conn_result = self.status.UNRECOVERABLE
except Exception as except_msg:
self.error_queue.append(except_msg)
logger.error("Failed Connection: %s" %
unicode(except_msg))
return conn_result
class ConnectionError(Exception):
"""
generic connection error
"""
def __str__(self):
if len(self.args) >= 1:
return repr(self.args[0])
else:
raise self()
class UnrecoverableError(ConnectionError):
"""
we cannot do anything about it, sorry
"""
pass
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