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# -*- coding: utf-8 -*-
# _protocol.py
# Copyright (C) 2014-2015 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/>.
"""
Bonafide protocol.
"""
import os
import resource
from collections import defaultdict
from leap.common.config import get_path_prefix
from leap.bitmask.bonafide import config
from leap.bitmask.bonafide.provider import Api
from leap.bitmask.bonafide.session import Session, OK
from twisted.cred.credentials import UsernamePassword
from twisted.internet.defer import fail
from twisted.python import log
# TODO [ ] enable-disable services
# TODO [ ] read provider info
COMMANDS = 'signup', 'authenticate', 'logout', 'stats'
_preffix = get_path_prefix()
class BonafideProtocol(object):
"""
Expose the protocol that interacts with the Bonafide Service API.
"""
_apis = defaultdict(None)
_sessions = defaultdict(None)
def _get_api(self, provider):
# TODO should get deferred
if provider.domain in self._apis:
return self._apis[provider.domain]
# TODO defer the autoconfig for the provider if needed...
api = Api(provider.api_uri, provider.version)
self._apis[provider.domain] = api
return api
def _get_session(self, provider, full_id, password=""):
if full_id in self._sessions:
return self._sessions[full_id]
# TODO if password/username null, then pass AnonymousCreds
# TODO use twisted.cred instead
username, provider_id = config.get_username_and_provider(full_id)
credentials = UsernamePassword(username, password)
api = self._get_api(provider)
provider_pem = _get_provider_ca_path(provider_id)
session = Session(credentials, api, provider_pem)
self._sessions[full_id] = session
return session
def _del_session_errback(self, failure, full_id):
if full_id in self._sessions:
del self._sessions[full_id]
return failure
# Service public methods
def do_signup(self, full_id, password):
log.msg('SIGNUP for %s' % full_id)
_, provider_id = config.get_username_and_provider(full_id)
provider = config.Provider(provider_id)
d = provider.callWhenReady(
self._do_signup, provider, full_id, password)
return d
def _do_signup(self, provider, full_id, password):
# XXX check it's unauthenticated
def return_user(result, _session):
return_code, user = result
if return_code == OK:
return user
username, _ = config.get_username_and_provider(full_id)
# XXX get deferred?
session = self._get_session(provider, full_id, password)
d = session.signup(username, password)
d.addCallback(return_user, session)
d.addErrback(self._del_session_errback, full_id)
return d
def do_authenticate(self, full_id, password):
_, provider_id = config.get_username_and_provider(full_id)
provider = config.Provider(provider_id)
def maybe_finish_provider_bootstrap(result, provider):
session = self._get_session(provider, full_id, password)
d = provider.download_services_config_with_auth(session)
d.addCallback(lambda _: result)
return d
d = provider.callWhenReady(
self._do_authenticate, provider, full_id, password)
d.addCallback(maybe_finish_provider_bootstrap, provider)
return d
def _do_authenticate(self, provider, full_id, password):
def return_token_and_uuid(result, _session):
if result == OK:
# TODO -- turn this into JSON response
return str(_session.token), str(_session.uuid)
log.msg('AUTH for %s' % full_id)
# XXX get deferred?
session = self._get_session(provider, full_id, password)
d = session.authenticate()
d.addCallback(return_token_and_uuid, session)
d.addErrback(self._del_session_errback, full_id)
return d
def do_logout(self, full_id):
# XXX use the AVATAR here
log.msg('LOGOUT for %s' % full_id)
if (full_id not in self._sessions or
not self._sessions[full_id].is_authenticated):
return fail(RuntimeError("There is no session for such user"))
session = self._sessions[full_id]
d = session.logout()
d.addCallback(lambda _: self._sessions.pop(full_id))
d.addCallback(lambda _: '%s logged out' % full_id)
return d
def do_get_smtp_cert(self, full_id):
if (full_id not in self._sessions or
not self._sessions[full_id].is_authenticated):
return fail(RuntimeError("There is no session for such user"))
d = self._sessions[full_id].get_smtp_cert()
return d
def do_get_vpn_cert(self):
# FIXME to be implemented
pass
def do_update_user(self):
# FIXME to be implemented
pass
def do_stats(self):
log.msg('Calculating Bonafide Service STATS')
mem = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
return {'sessions': len(self._sessions),
'mem': '%s KB' % (mem / 1024)}
def _get_provider_ca_path(provider_id):
return os.path.join(
_preffix, 'leap', 'providers', provider_id, 'keys', 'ca', 'cacert.pem')
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