1 # Copyright (C) 2014 Ipsilon project Contributors, for license see COPYING
3 from ipsilon.providers.common import ProviderBase, ProviderPageBase, \
5 from ipsilon.providers.saml2.auth import AuthenticateRequest
6 from ipsilon.providers.saml2.logout import LogoutRequest
7 from ipsilon.providers.saml2.admin import Saml2AdminPage
8 from ipsilon.providers.saml2.rest import Saml2RestBase
9 from ipsilon.providers.saml2.provider import IdentityProvider
10 from ipsilon.providers.saml2.sessions import SAMLSessionFactory
11 from ipsilon.tools.certs import Certificate
12 from ipsilon.tools import saml2metadata as metadata
13 from ipsilon.tools import files
14 from ipsilon.util.http import require_content_type
15 from ipsilon.util.constants import SOAP_MEDIA_TYPE, XML_MEDIA_TYPE
16 from ipsilon.util.user import UserSession
17 from ipsilon.util.plugin import PluginObject
18 from ipsilon.util import config as pconfig
20 from datetime import timedelta
26 cherrypy.tools.require_content_type = cherrypy.Tool('before_request_body',
30 def is_lasso_ecp_enabled():
31 # Full ECP support appeared in lasso version 2.4.2
32 return lasso.checkVersion(2, 4, 2, lasso.CHECK_VERSION_NUMERIC)
35 class SSO_SOAP(AuthenticateRequest):
37 def __init__(self, *args, **kwargs):
38 super(SSO_SOAP, self).__init__(*args, **kwargs)
39 self.binding = metadata.SAML2_SERVICE_MAP['sso-soap'][1]
41 @cherrypy.tools.require_content_type(
42 required=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE])
43 @cherrypy.tools.accept(media=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE])
44 @cherrypy.tools.response_headers(
45 headers=[('Content-Type', 'SOAP_MEDIA_TYPE')])
46 def POST(self, *args, **kwargs):
47 self.debug("SSO_SOAP.POST() begin")
49 self.debug("SSO_SOAP transaction provider=%s id=%s" %
50 (self.trans.provider, self.trans.transaction_id))
55 self.debug("SSO_SOAP user=%s" % (user.name))
58 raise cherrypy.HTTPError(403, 'No user specified for SSO_SOAP')
60 soap_xml_doc = cherrypy.request.rfile.read()
61 soap_xml_doc = soap_xml_doc.strip()
62 self.debug("SSO_SOAP soap_xml_doc=%s" % soap_xml_doc)
63 login = self.saml2login(soap_xml_doc)
65 return self.auth(login)
68 class Redirect(AuthenticateRequest):
70 def __init__(self, *args, **kwargs):
71 super(Redirect, self).__init__(*args, **kwargs)
72 self.binding = metadata.SAML2_SERVICE_MAP['sso-redirect'][1]
74 def GET(self, *args, **kwargs):
76 query = cherrypy.request.query_string
78 login = self.saml2login(query)
79 return self.auth(login)
82 class POSTAuth(AuthenticateRequest):
84 def __init__(self, *args, **kwargs):
85 super(POSTAuth, self).__init__(*args, **kwargs)
86 self.binding = metadata.SAML2_SERVICE_MAP['sso-post'][1]
88 def POST(self, *args, **kwargs):
90 request = kwargs.get(lasso.SAML2_FIELD_REQUEST)
91 relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE)
93 login = self.saml2login(request)
94 login.set_msgRelayState(relaystate)
95 return self.auth(login)
98 class Continue(AuthenticateRequest):
100 def GET(self, *args, **kwargs):
102 session = UserSession()
103 user = session.get_user()
104 transdata = self.trans.retrieve()
105 self.stage = transdata['saml2_stage']
107 if user.is_anonymous:
108 self.debug("User is marked anonymous?!")
109 # TODO: Return to SP with auth failed error
110 raise cherrypy.HTTPError(401)
112 self.debug('Continue auth for %s' % user.name)
114 if 'saml2_request' not in transdata:
115 self.debug("Couldn't find Request dump?!")
116 # TODO: Return to SP with auth failed error
117 raise cherrypy.HTTPError(400)
118 dump = transdata['saml2_request']
121 login = self.cfg.idp.get_login_handler(dump)
122 except Exception, e: # pylint: disable=broad-except
123 self.debug('Failed to load status from dump: %r' % e)
126 self.debug("Empty Request dump?!")
127 # TODO: Return to SP with auth failed error
128 raise cherrypy.HTTPError(400)
130 return self.auth(login)
133 class Logout(LogoutRequest):
135 def GET(self, *args, **kwargs):
136 query = cherrypy.request.query_string
138 relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE)
139 response = kwargs.get(lasso.SAML2_FIELD_RESPONSE)
141 return self.logout(query,
142 relaystate=relaystate,
143 samlresponse=response)
146 class SSO(ProviderPageBase):
148 def __init__(self, *args, **kwargs):
149 super(SSO, self).__init__(*args, **kwargs)
150 self.Redirect = Redirect(*args, **kwargs)
151 self.POST = POSTAuth(*args, **kwargs)
152 self.Continue = Continue(*args, **kwargs)
153 self.SOAP = SSO_SOAP(*args, **kwargs)
156 class SLO(ProviderPageBase):
158 def __init__(self, *args, **kwargs):
159 super(SLO, self).__init__(*args, **kwargs)
160 self.debug('SLO init')
161 self.Redirect = Logout(*args, **kwargs)
165 METADATA_RENEW_INTERVAL = 60 * 60 * 24 * 7
166 # five years (approximately)
167 METADATA_DEFAULT_VALIDITY_PERIOD = 365 * 5
170 class Metadata(ProviderPageBase):
171 def GET(self, *args, **kwargs):
173 body = self._get_metadata()
174 cherrypy.response.headers["Content-Type"] = XML_MEDIA_TYPE
175 cherrypy.response.headers["Content-Disposition"] = \
176 'attachment; filename="metadata.xml"'
179 def _get_metadata(self):
180 if os.path.isfile(self.cfg.idp_metadata_file):
181 s = os.stat(self.cfg.idp_metadata_file)
182 if s.st_mtime > time.time() - METADATA_RENEW_INTERVAL:
183 with open(self.cfg.idp_metadata_file) as m:
186 # Otherwise generate and save
187 idp_cert = Certificate()
188 idp_cert.import_cert(self.cfg.idp_certificate_file,
189 self.cfg.idp_key_file)
191 validity = int(self.cfg.idp_metadata_validity)
192 meta = IdpMetadataGenerator(self.instance_base_url(), idp_cert,
195 with open(self.cfg.idp_metadata_file, 'w+') as m:
200 class SAML2(ProviderPageBase):
202 def __init__(self, *args, **kwargs):
203 super(SAML2, self).__init__(*args, **kwargs)
204 self.metadata = Metadata(*args, **kwargs)
205 self.SSO = SSO(*args, **kwargs)
206 self.SLO = SLO(*args, **kwargs)
209 class IdpProvider(ProviderBase):
211 def __init__(self, *pargs):
212 super(IdpProvider, self).__init__('saml2', 'saml2', *pargs)
217 self.sessionfactory = None
218 self.description = """
219 Provides SAML 2.0 authentication infrastructure. """
225 'Path to data storage accessible by the IdP.',
226 '/var/lib/ipsilon/saml2'),
229 'The IdP Metadata file generated at install time.',
232 'idp metadata validity',
233 'The IdP Metadata validity period (in days) to use when '
234 'generating new metadata.',
235 METADATA_DEFAULT_VALIDITY_PERIOD),
237 'idp certificate file',
238 'The IdP PEM Certificate generated at install time.',
242 'The IdP Certificate Key generated at install time.',
246 'The salt used for persistent Name IDs.',
249 'allow self registration',
250 'Allow authenticated users to register applications.',
253 'default allowed nameids',
254 'Default Allowed NameIDs for Service Providers.',
255 metadata.SAML2_NAMEID_MAP.keys(),
256 ['unspecified', 'persistent', 'transient', 'email',
257 'kerberos', 'x509']),
260 'Default NameID used by Service Providers.',
261 metadata.SAML2_NAMEID_MAP.keys(),
264 'default email domain',
265 'Used for users missing the email property.',
268 'default attribute mapping',
269 'Defines how to map attributes before returning them to SPs',
272 'default allowed attributes',
273 'Defines a list of allowed attributes, applied after mapping',
276 'session database url',
277 'Database URL for SAML2 sessions',
278 'saml2.sessions.db.sqlite'),
280 if cherrypy.config.get('debug', False):
283 logger = logging.getLogger('lasso')
284 lh = logging.StreamHandler(sys.stderr)
285 logger.addHandler(lh)
286 logger.setLevel(logging.DEBUG)
289 def allow_self_registration(self):
290 return self.get_config_value('allow self registration')
293 def idp_storage_path(self):
294 return self.get_config_value('idp storage path')
297 def idp_metadata_file(self):
298 return os.path.join(self.idp_storage_path,
299 self.get_config_value('idp metadata file'))
302 def idp_metadata_validity(self):
303 return self.get_config_value('idp metadata validity')
306 def idp_certificate_file(self):
307 return os.path.join(self.idp_storage_path,
308 self.get_config_value('idp certificate file'))
311 def idp_key_file(self):
312 return os.path.join(self.idp_storage_path,
313 self.get_config_value('idp key file'))
316 def idp_nameid_salt(self):
317 return self.get_config_value('idp nameid salt')
320 def default_allowed_nameids(self):
321 return self.get_config_value('default allowed nameids')
324 def default_nameid(self):
325 return self.get_config_value('default nameid')
328 def default_email_domain(self):
329 return self.get_config_value('default email domain')
332 def default_attribute_mapping(self):
333 return self.get_config_value('default attribute mapping')
336 def default_allowed_attributes(self):
337 return self.get_config_value('default allowed attributes')
339 def get_tree(self, site):
340 self.page = SAML2(site, self)
341 self.admin = Saml2AdminPage(site, self)
342 self.rest = Saml2RestBase(site, self)
345 def used_datastores(self):
346 # pylint: disable=protected-access
347 return [self.sessionfactory._ss]
351 self.sessionfactory = SAMLSessionFactory(
352 database_url=self.get_config_value('session database url')
355 # pylint: disable=protected-access
356 bt = cherrypy.process.plugins.BackgroundTask(
357 60, self.sessionfactory._ss.remove_expired_sessions
362 idp = IdentityProvider(self,
363 sessionfactory=self.sessionfactory)
364 except Exception, e: # pylint: disable=broad-except
365 self.debug('Failed to init SAML2 provider: %r' % e)
368 self._root.logout.add_handler(self.name, self.idp_initiated_logout)
370 # Import all known applications
371 data = self.get_data()
374 if 'type' not in sp or sp['type'] != 'SP':
376 if 'name' not in sp or 'metadata' not in sp:
380 except Exception, e: # pylint: disable=broad-except
381 self.debug('Failed to add SP %s: %r' % (sp['name'], e))
386 super(IdpProvider, self).on_enable()
387 self.idp = self.init_idp()
388 if hasattr(self, 'admin'):
392 def idp_initiated_logout(self):
394 Logout all SP sessions when the logout comes from the IdP.
396 For the current user only.
398 Only use HTTP-Redirect to start the logout. This is guaranteed
399 to be supported in SAML 2.
401 self.debug("IdP-initiated SAML2 logout")
405 saml_sessions = self.sessionfactory
406 # pylint: disable=unused-variable
407 (mech, session) = saml_sessions.get_next_logout(
408 logout_mechs=[lasso.SAML2_METADATA_BINDING_REDIRECT])
412 logout = self.idp.get_logout_handler()
413 logout.setSessionFromDump(session.login_session)
414 logout.initRequest(session.provider_id)
416 logout.buildRequestMsg()
417 except lasso.Error, e:
418 self.error('failure to build logout request msg: %s' % e)
419 raise cherrypy.HTTPRedirect(400, 'Failed to log out user: %s '
422 # Add a fake session to indicate where the user should
423 # be redirected to when all SP's are logged out.
424 idpurl = self._root.instance_base_url()
425 session_id = "_" + uuid.uuid4().hex.upper()
426 saml_sessions.add_session(session_id, idpurl, user.name, "", "",
427 [lasso.SAML2_METADATA_BINDING_REDIRECT])
428 init_session = saml_sessions.get_session_by_id(session_id)
429 saml_sessions.start_logout(init_session, relaystate=idpurl)
431 # Add the logout request id we just created to the session to be
432 # logged out so that when it responds we can find the right
434 session.set_logoutstate(request_id=logout.request.id)
435 saml_sessions.start_logout(session, initial=False)
437 self.debug('Sending initial logout request to %s' % logout.msgUrl)
438 raise cherrypy.HTTPRedirect(logout.msgUrl)
441 class IdpMetadataGenerator(object):
443 def __init__(self, url, idp_cert, expiration=None):
444 self.meta = metadata.Metadata(metadata.IDP_ROLE, expiration)
445 self.meta.set_entity_id('%s/saml2/metadata' % url)
446 self.meta.add_certs(idp_cert, idp_cert)
447 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-post'],
448 '%s/saml2/SSO/POST' % url)
449 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-redirect'],
450 '%s/saml2/SSO/Redirect' % url)
451 if is_lasso_ecp_enabled():
452 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-soap'],
453 '%s/saml2/SSO/SOAP' % url)
454 self.meta.add_service(metadata.SAML2_SERVICE_MAP['logout-redirect'],
455 '%s/saml2/SLO/Redirect' % url)
456 self.meta.add_allowed_name_format(
457 lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT)
458 self.meta.add_allowed_name_format(
459 lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT)
460 self.meta.add_allowed_name_format(
461 lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL)
463 def output(self, path=None):
464 return self.meta.output(path)
467 class Installer(ProviderInstaller):
469 def __init__(self, *pargs):
470 super(Installer, self).__init__()
474 def install_args(self, group):
475 group.add_argument('--saml2', choices=['yes', 'no'], default='yes',
476 help='Configure SAML2 Provider')
477 group.add_argument('--saml2-metadata-validity',
478 default=METADATA_DEFAULT_VALIDITY_PERIOD,
479 help=('Metadata validity period in days '
481 METADATA_DEFAULT_VALIDITY_PERIOD))
482 group.add_argument('--saml2-session-dburl',
483 help='session database URL')
485 def configure(self, opts, changes):
486 if opts['saml2'] != 'yes':
489 # Check storage path is present or create it
490 path = os.path.join(opts['data_dir'], 'saml2')
491 if not os.path.exists(path):
492 os.makedirs(path, 0700)
494 # Use the same cert for signing and ecnryption for now
495 cert = Certificate(path)
496 cert.generate('idp', opts['hostname'])
498 # Generate Idp Metadata
500 if opts['secure'].lower() == 'no':
502 url = '%s://%s/%s' % (proto, opts['hostname'], opts['instance'])
503 validity = int(opts['saml2_metadata_validity'])
504 meta = IdpMetadataGenerator(url, cert,
506 if 'gssapi' in opts and opts['gssapi'] == 'yes':
507 meta.meta.add_allowed_name_format(
508 lasso.SAML2_NAME_IDENTIFIER_FORMAT_KERBEROS)
510 meta.output(os.path.join(path, 'metadata.xml'))
512 # Add configuration data to database
513 po = PluginObject(*self.pargs)
516 po.wipe_config_values()
517 config = {'idp storage path': path,
518 'idp metadata file': 'metadata.xml',
519 'idp certificate file': cert.cert,
520 'idp key file': cert.key,
521 'idp nameid salt': uuid.uuid4().hex,
522 'idp metadata validity': opts['saml2_metadata_validity'],
523 'session database url': opts['saml2_session_dburl'] or
524 opts['database_url'] % {
525 'datadir': opts['data_dir'],
526 'dbname': 'saml2.sessions.db'}}
527 po.save_plugin_config(config)
529 # Update global config to add login plugin
531 po.save_enabled_state()
533 # Fixup permissions so only the ipsilon user can read these files
534 files.fix_user_dirs(path, opts['system_user'])