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#
# Copyright (c) 2015 ThoughtWorks, Inc.
#
# Pixelated is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Pixelated 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
import logging
from OpenSSL import SSL
from OpenSSL import crypto
from leap.common.events import (server as events_server,
register, catalog as events)
from twisted.cred import portal
from twisted.cred.checkers import AllowAnonymousAccess
from twisted.internet import defer
from twisted.internet import reactor
from twisted.internet import ssl
from pixelated.adapter.welcome_mail import add_welcome_mail
from pixelated.config import arguments
from pixelated.config import logger
from pixelated.config.leap import initialize_leap_single_user, init_monkeypatches, initialize_leap_provider
from pixelated.config import services
from pixelated.config.site import PixelatedSite
from pixelated.resources.auth import LeapPasswordChecker, PixelatedRealm, PixelatedAuthSessionWrapper, SessionChecker
from pixelated.resources.login_resource import LoginResource
from pixelated.resources.root_resource import RootResource
log = logging.getLogger(__name__)
class ServicesFactory(object):
def __init__(self, mode):
self._services_by_user = {}
self.mode = mode
def is_logged_in(self, user_id):
return user_id in self._services_by_user
def services(self, user_id):
return self._services_by_user[user_id]
def log_out_user(self, user_id):
if self.is_logged_in(user_id):
_services = self._services_by_user[user_id]
_services.close()
del self._services_by_user[user_id]
def add_session(self, user_id, services):
self._services_by_user[user_id] = services
@defer.inlineCallbacks
def create_services_from(self, leap_session):
_services = services.Services(leap_session)
yield _services.setup()
self._services_by_user[leap_session.user_auth.uuid] = _services
class SingleUserServicesFactory(object):
def __init__(self, mode):
self._services = None
self.mode = mode
def add_session(self, user_id, services):
self._services = services
def services(self, user_id):
return self._services
class UserAgentMode(object):
def __init__(self, is_single_user):
self.is_single_user = is_single_user
@defer.inlineCallbacks
def start_user_agent_in_single_user_mode(root_resource, services_factory, leap_home, leap_session):
log.info('Bootstrap done, loading services for user %s' % leap_session.user_auth.username)
_services = services.Services(leap_session)
yield _services.setup()
if leap_session.fresh_account:
yield add_welcome_mail(leap_session.mail_store)
services_factory.add_session(leap_session.user_auth.uuid, _services)
root_resource.initialize()
# soledad needs lots of threads
reactor.getThreadPool().adjustPoolsize(5, 15)
log.info('Done, the user agent is ready to be used')
def _ssl_options(sslkey, sslcert):
with open(sslkey) as keyfile:
pkey = crypto.load_privatekey(crypto.FILETYPE_PEM, keyfile.read())
with open(sslcert) as certfile:
cert = crypto.load_certificate(crypto.FILETYPE_PEM, certfile.read())
acceptable = ssl.AcceptableCiphers.fromOpenSSLCipherString(
u'ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA:!RC4:HIGH:!MD5:!aNULL:!EDH')
options = ssl.CertificateOptions(privateKey=pkey,
certificate=cert,
method=SSL.TLSv1_2_METHOD,
acceptableCiphers=acceptable)
return options
def _create_service_factory(args):
if args.single_user:
return SingleUserServicesFactory(UserAgentMode(is_single_user=True))
else:
return ServicesFactory(UserAgentMode(is_single_user=False))
def initialize():
log.info('Starting the Pixelated user agent')
args = arguments.parse_user_agent_args()
logger.init(debug=args.debug)
services_factory = _create_service_factory(args)
resource = RootResource(services_factory)
deferred = _start_mode(args, resource, services_factory)
def _quit_on_error(failure):
failure.printTraceback()
reactor.stop()
def _register_shutdown_on_token_expire(leap_session):
register(events.SOLEDAD_INVALID_AUTH_TOKEN, lambda *unused: reactor.stop())
return leap_session
deferred.addCallback(_register_shutdown_on_token_expire)
deferred.addErrback(_quit_on_error)
log.info('Running the reactor')
reactor.run()
def _start_mode(args, resource, services_factory):
if services_factory.mode.is_single_user:
deferred = _start_in_single_user_mode(args, resource, services_factory)
else:
deferred = _start_in_multi_user_mode(args, resource, services_factory)
return deferred
def _start_in_multi_user_mode(args, root_resource, services_factory):
if args.provider is None:
raise ValueError('provider name is required')
init_monkeypatches()
events_server.ensure_server()
config, provider = initialize_leap_provider(args.provider, args.leap_provider_cert, args.leap_provider_cert_fingerprint, args.leap_home)
protected_resource = set_up_protected_resources(root_resource, provider, services_factory, banner=args.banner)
start_site(args, protected_resource)
reactor.getThreadPool().adjustPoolsize(5, 15)
return defer.succeed(None)
def set_up_protected_resources(root_resource, provider, services_factory, checker=None, banner=None):
if not checker:
checker = LeapPasswordChecker(provider)
session_checker = SessionChecker(services_factory)
anonymous_resource = LoginResource(services_factory, disclaimer_banner=banner)
realm = PixelatedRealm(root_resource, anonymous_resource)
_portal = portal.Portal(realm, [checker, session_checker, AllowAnonymousAccess()])
protected_resource = PixelatedAuthSessionWrapper(_portal, root_resource, anonymous_resource, [])
anonymous_resource.set_portal(_portal)
root_resource.initialize(_portal, disclaimer_banner=banner)
return protected_resource
def _start_in_single_user_mode(args, resource, services_factory):
start_site(args, resource)
deferred = initialize_leap_single_user(args.leap_provider_cert,
args.leap_provider_cert_fingerprint,
args.credentials_file,
args.leap_home)
deferred.addCallback(
lambda leap_session: start_user_agent_in_single_user_mode(
resource,
services_factory,
args.leap_home,
leap_session))
return deferred
def start_site(config, resource):
log.info('Starting the API on port %s' % config.port)
if config.sslkey and config.sslcert:
reactor.listenSSL(config.port, PixelatedSite(resource), _ssl_options(config.sslkey, config.sslcert),
interface=config.host)
else:
reactor.listenTCP(config.port, PixelatedSite(resource), interface=config.host)
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