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)
347 self.sessionfactory = SAMLSessionFactory(
348 database_url=self.get_config_value('session database url')
351 # pylint: disable=protected-access
352 bt = cherrypy.process.plugins.BackgroundTask(
353 60, self.sessionfactory._ss.remove_expired_sessions
358 idp = IdentityProvider(self,
359 sessionfactory=self.sessionfactory)
360 except Exception, e: # pylint: disable=broad-except
361 self.debug('Failed to init SAML2 provider: %r' % e)
364 self._root.logout.add_handler(self.name, self.idp_initiated_logout)
366 # Import all known applications
367 data = self.get_data()
370 if 'type' not in sp or sp['type'] != 'SP':
372 if 'name' not in sp or 'metadata' not in sp:
376 except Exception, e: # pylint: disable=broad-except
377 self.debug('Failed to add SP %s: %r' % (sp['name'], e))
382 super(IdpProvider, self).on_enable()
383 self.idp = self.init_idp()
384 if hasattr(self, 'admin'):
388 def idp_initiated_logout(self):
390 Logout all SP sessions when the logout comes from the IdP.
392 For the current user only.
394 Only use HTTP-Redirect to start the logout. This is guaranteed
395 to be supported in SAML 2.
397 self.debug("IdP-initiated SAML2 logout")
401 saml_sessions = self.sessionfactory
402 # pylint: disable=unused-variable
403 (mech, session) = saml_sessions.get_next_logout(
404 logout_mechs=[lasso.SAML2_METADATA_BINDING_REDIRECT])
408 logout = self.idp.get_logout_handler()
409 logout.setSessionFromDump(session.login_session)
410 logout.initRequest(session.provider_id)
412 logout.buildRequestMsg()
413 except lasso.Error, e:
414 self.error('failure to build logout request msg: %s' % e)
415 raise cherrypy.HTTPRedirect(400, 'Failed to log out user: %s '
418 # Add a fake session to indicate where the user should
419 # be redirected to when all SP's are logged out.
420 idpurl = self._root.instance_base_url()
421 session_id = "_" + uuid.uuid4().hex.upper()
422 saml_sessions.add_session(session_id, idpurl, user.name, "", "",
423 [lasso.SAML2_METADATA_BINDING_REDIRECT])
424 init_session = saml_sessions.get_session_by_id(session_id)
425 saml_sessions.start_logout(init_session, relaystate=idpurl)
427 # Add the logout request id we just created to the session to be
428 # logged out so that when it responds we can find the right
430 session.set_logoutstate(request_id=logout.request.id)
431 saml_sessions.start_logout(session, initial=False)
433 self.debug('Sending initial logout request to %s' % logout.msgUrl)
434 raise cherrypy.HTTPRedirect(logout.msgUrl)
437 class IdpMetadataGenerator(object):
439 def __init__(self, url, idp_cert, expiration=None):
440 self.meta = metadata.Metadata(metadata.IDP_ROLE, expiration)
441 self.meta.set_entity_id('%s/saml2/metadata' % url)
442 self.meta.add_certs(idp_cert, idp_cert)
443 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-post'],
444 '%s/saml2/SSO/POST' % url)
445 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-redirect'],
446 '%s/saml2/SSO/Redirect' % url)
447 if is_lasso_ecp_enabled():
448 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-soap'],
449 '%s/saml2/SSO/SOAP' % url)
450 self.meta.add_service(metadata.SAML2_SERVICE_MAP['logout-redirect'],
451 '%s/saml2/SLO/Redirect' % url)
452 self.meta.add_allowed_name_format(
453 lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT)
454 self.meta.add_allowed_name_format(
455 lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT)
456 self.meta.add_allowed_name_format(
457 lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL)
459 def output(self, path=None):
460 return self.meta.output(path)
463 class Installer(ProviderInstaller):
465 def __init__(self, *pargs):
466 super(Installer, self).__init__()
470 def install_args(self, group):
471 group.add_argument('--saml2', choices=['yes', 'no'], default='yes',
472 help='Configure SAML2 Provider')
473 group.add_argument('--saml2-metadata-validity',
474 default=METADATA_DEFAULT_VALIDITY_PERIOD,
475 help=('Metadata validity period in days '
477 METADATA_DEFAULT_VALIDITY_PERIOD))
478 group.add_argument('--saml2-session-dburl',
479 help='session database URL')
481 def configure(self, opts, changes):
482 if opts['saml2'] != 'yes':
485 # Check storage path is present or create it
486 path = os.path.join(opts['data_dir'], 'saml2')
487 if not os.path.exists(path):
488 os.makedirs(path, 0700)
490 # Use the same cert for signing and ecnryption for now
491 cert = Certificate(path)
492 cert.generate('idp', opts['hostname'])
494 # Generate Idp Metadata
496 if opts['secure'].lower() == 'no':
498 url = '%s://%s/%s' % (proto, opts['hostname'], opts['instance'])
499 validity = int(opts['saml2_metadata_validity'])
500 meta = IdpMetadataGenerator(url, cert,
502 if 'gssapi' in opts and opts['gssapi'] == 'yes':
503 meta.meta.add_allowed_name_format(
504 lasso.SAML2_NAME_IDENTIFIER_FORMAT_KERBEROS)
506 meta.output(os.path.join(path, 'metadata.xml'))
508 # Add configuration data to database
509 po = PluginObject(*self.pargs)
512 po.wipe_config_values()
513 config = {'idp storage path': path,
514 'idp metadata file': 'metadata.xml',
515 'idp certificate file': cert.cert,
516 'idp key file': cert.key,
517 'idp nameid salt': uuid.uuid4().hex,
518 'idp metadata validity': opts['saml2_metadata_validity'],
519 'session database url': opts['saml2_session_dburl'] or
520 opts['database_url'] % {
521 'datadir': opts['data_dir'],
522 'dbname': 'saml2.sessions.db'}}
523 po.save_plugin_config(config)
525 # Update global config to add login plugin
527 po.save_enabled_state()
529 # Fixup permissions so only the ipsilon user can read these files
530 files.fix_user_dirs(path, opts['system_user'])