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# -*- coding: utf-8 -*-
# __init__.py
# Copyright (C) 2013 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/>.
"""
Services module.
"""
import logging
import os
import sys
from PySide import QtCore
from leap.bitmask.config import flags
from leap.bitmask.crypto.srpauth import SRPAuth
from leap.bitmask.util.constants import REQUEST_TIMEOUT
from leap.bitmask.util.privilege_policies import is_missing_policy_permissions
from leap.bitmask.util.request_helpers import get_content
from leap.bitmask import util
from leap.common.check import leap_assert
from leap.common.config.baseconfig import BaseConfig
from leap.common.files import get_mtime
logger = logging.getLogger(__name__)
EIP_SERVICE = u"openvpn"
MX_SERVICE = u"mx"
DEPLOYED = [EIP_SERVICE, MX_SERVICE]
def get_service_display_name(service):
"""
Returns the name to display of the given service.
If there is no configured name for that service, then returns the same
parameter
:param service: the 'machine' service name
:type service: str
:rtype: str
"""
# qt translator method helper
_tr = QtCore.QObject().tr
# Correspondence for services and their name to display
EIP_LABEL = _tr("Encrypted Internet")
MX_LABEL = _tr("Encrypted Mail")
service_display = {
"openvpn": EIP_LABEL,
"mx": MX_LABEL
}
# If we need to add a warning about eip needing
# administrative permissions to start. That can be either
# because we are running in standalone mode, or because we could
# not find the needed privilege escalation mechanisms being operative.
if flags.STANDALONE or is_missing_policy_permissions():
EIP_LABEL += " " + _tr("(will need admin password to start)")
return service_display.get(service, service)
def get_supported(services):
"""
Returns a list of the available services.
:param services: a list containing the services to be filtered.
:type services: list of str
:returns: a list of the available services
:rtype: list of str
"""
return filter(lambda s: s in DEPLOYED, services)
def download_service_config(provider_config, service_config,
session,
download_if_needed=True):
"""
Downloads config for a given service.
:param provider_config: an instance of ProviderConfig
:type provider_config: ProviderConfig
:param service_config: an instance of a particular Service config.
:type service_config: BaseConfig
:param session: an instance of a fetcher.session
(currently we're using requests only, but it can be
anything that implements that interface)
:type session: requests.sessions.Session
"""
service_name = service_config.name
service_json = "{0}-service.json".format(service_name)
headers = {}
mtime = get_mtime(os.path.join(util.get_path_prefix(),
"leap", "providers",
provider_config.get_domain(),
service_json))
if download_if_needed and mtime:
headers['if-modified-since'] = mtime
api_version = provider_config.get_api_version()
config_uri = "%s/%s/config/%s-service.json" % (
provider_config.get_api_uri(),
api_version,
service_name)
logger.debug('Downloading %s config from: %s' % (
service_name.upper(),
config_uri))
# XXX make and use @with_srp_auth decorator
srp_auth = SRPAuth(provider_config)
session_id = srp_auth.get_session_id()
token = srp_auth.get_token()
cookies = None
if session_id is not None:
cookies = {"_session_id": session_id}
# API v2 will only support token auth, but in v1 we can send both
if token is not None:
headers["Authorization"] = 'Token token="{0}"'.format(token)
verify = provider_config.get_ca_cert_path()
if verify:
verify = verify.encode(sys.getfilesystemencoding())
res = session.get(config_uri,
verify=verify,
headers=headers,
timeout=REQUEST_TIMEOUT,
cookies=cookies)
res.raise_for_status()
service_config.set_api_version(api_version)
# Not modified
service_path = ("leap", "providers", provider_config.get_domain(),
service_json)
if res.status_code == 304:
logger.debug(
"{0} definition has not been modified".format(
service_name.upper()))
service_config.load(os.path.join(*service_path))
else:
service_definition, mtime = get_content(res)
service_config.load(data=service_definition, mtime=mtime)
service_config.save(service_path)
class ServiceConfig(BaseConfig):
"""
Base class used by the different service configs
"""
_service_name = None
@property
def name(self):
"""
Getter for the service name.
Derived classes should assign it.
"""
leap_assert(self._service_name is not None)
return self._service_name
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