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# -*- coding: utf-8 -*-
# manager.py
# Copyright (C) 2015 LEAP
#
# 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/>.
"""
VPN Manager
"""
import os
import tempfile
from leap.bitmask.vpn import process
from leap.bitmask.vpn.constants import IS_WIN
class _TempEIPConfig(object):
"""Current EIP code on bitmask depends on EIPConfig object, this temporary
implementation helps on the transition."""
def __init__(self, flags, path, ports):
self._flags = flags
self._path = path
self._ports = ports
def get_gateway_ports(self, idx):
return self._ports
def get_openvpn_configuration(self):
return self._flags
def get_client_cert_path(self, providerconfig):
return self._path
class _TempProviderConfig(object):
"""Current EIP code on bitmask depends on ProviderConfig object, this
temporary implementation helps on the transition."""
def __init__(self, domain, path):
self._domain = domain
self._path = path
def get_domain(self):
return self._domain
def get_ca_cert_path(self):
return self._path
class VPNManager(object):
def __init__(self, remotes, cert_path, key_path, ca_path, extra_flags,
mock_signaler):
"""
Initialize the VPNManager object.
:param remotes: a list of gateways tuple (ip, port) looking like this:
((ip1, portA), (ip2, portB), ...)
:type remotes: tuple of tuple(str, int)
"""
# TODO we can set all the needed ports, gateways and paths in here
ports = []
# this seems to be obsolete, needed to get gateways
domain = "demo.bitmask.net"
self._remotes = remotes
self._eipconfig = _TempEIPConfig(extra_flags, cert_path, ports)
self._providerconfig = _TempProviderConfig(domain, ca_path)
# signaler = None # XXX handle signaling somehow...
signaler = mock_signaler
self._vpn = process.VPN(remotes=remotes, signaler=signaler)
def start(self):
"""
Start the VPN process.
VPN needs:
* paths for: cert, key, ca
* gateway, port
* domain name
"""
host, port = self._get_management()
# TODO need gateways here
# sorting them doesn't belong in here
# gateways = ((ip1, portA), (ip2, portB), ...)
self._vpn.start(eipconfig=self._eipconfig,
providerconfig=self._providerconfig,
socket_host=host, socket_port=port)
return True
def stop(self):
"""
Bring openvpn down using the privileged wrapper.
:returns: True if succeeded, False otherwise.
:rtype: bool
"""
self._vpn.terminate(False, False) # TODO review params
# TODO how to return False if this fails
return True
def is_up(self):
"""
Return whether the VPN is up or not.
:rtype: bool
"""
pass
def kill(self):
"""
Sends a kill signal to the openvpn process.
"""
pass
# self._vpn.killit()
def terminate(self):
"""
Stop the openvpn subprocess.
Attempts to send a SIGTERM first, and after a timeout it sends a
SIGKILL.
"""
pass
def _get_management(self):
"""
Return a tuple with the host (socket) and port to be used for VPN.
:return: (host, port)
:rtype: tuple (str, str)
"""
if IS_WIN:
host = "localhost"
port = "9876"
else:
# XXX cleanup this on exit too
# XXX atexit.register ?
host = os.path.join(tempfile.mkdtemp(prefix="leap-tmp"),
'openvpn.socket')
port = "unix"
return host, port
|
