def logout(self, request, data, binding):
conf = get_config(request=request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session))
if 'SAMLResponse' in data:
# Logout started by us
client.parse_logout_request_response(data['SAMLResponse'], binding)
http_response = logout_completed()
else:
# Logout started by IdP
subject_id = _get_subject_id(request.session)
if subject_id is None:
http_response = logout_completed()
else:
http_info = client.handle_logout_request(data['SAMLRequest'], subject_id, binding,
relay_state=data.get('RelayState', ''))
http_response = HttpResponseRedirect(get_location(http_info))
state.sync()
user = request.user
if user.is_anonymous:
return http_response
Token.objects.get(user=user).delete()
auth.logout(request)
event_logger.saml2_auth.info(
'User {user_username} with full name {user_full_name} logged out successfully with SAML2.',
event_type='auth_logged_out_with_saml2', event_context={'user': user}
)
return http_response
def logout(request, config_loader_path=None, logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
logger.debug('Logout process started')
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session),
)
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contains the subject id for user %s'
% request.user)
auth.logout(request)
return render_to_response(logout_error_template, {},
context_instance=RequestContext(request))
resp = client.global_logout(subject_id)
entity_ids = client.users.issuers_of_info(subject_id)
state.sync()
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(resp[entity_ids[0]][1]['headers'][0][1])
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s',
request.user)
sign_requests = getattr(conf, '_sp_logout_requests_signed', False)
sign_alg = getattr(conf, 'signing_algorithm', SIG_RSA_SHA1)
digest_alg = getattr(conf, 'digest_algorithm', DIGEST_SHA1)
result = client.global_logout(subject_id,
sign=sign_requests,
sign_alg=sign_alg,
digest_alg=digest_alg)
state.sync()
if not result:
logger.error("Looks like the user %s is not logged in any IdP/AA",
subject_id)
return HttpResponseBadRequest("You are not logged in any IdP/AA")
if len(result) > 1:
logger.error(
'Sorry, I do not know how to logout from several sources. I will logout just from the first one'
)
for entityid, logout_info in result.items():
if isinstance(logout_info, tuple):
binding, http_info = logout_info
if binding == BINDING_HTTP_POST:
logger.debug(
'Returning form to the IdP to continue the logout process')
body = ''.join(http_info['data'])
return HttpResponse(body)
elif binding == BINDING_HTTP_REDIRECT:
logger.debug(
'Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('Unknown binding: %s', binding)
return HttpResponseServerError('Failed to log out')
else:
# We must have had a soap logout
return finish_logout(request, logout_info)
logger.error(
'Could not logout because there only the HTTP_REDIRECT is supported')
return HttpResponseServerError('Logout Binding not supported')
def do_logout_service(request,
data,
binding,
config_loader_path=None,
next_page=None,
logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.session))
if 'SAMLResponse' in data: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.parse_logout_request_response(
data['SAMLResponse'], binding)
state.sync()
return finish_logout(request, response, next_page=next_page)
elif 'SAMLRequest' in data: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout',
request.user)
auth.logout(request)
return render(request, logout_error_template, status=403)
else:
http_info = client.handle_logout_request(data['SAMLRequest'],
subject_id,
binding,
relay_state=data.get(
'RelayState', ''))
state.sync()
auth.logout(request)
if (http_info.get('method', 'GET') == 'POST'
and 'data' in http_info and
('Content-type', 'text/html') in http_info.get('headers', [])):
# need to send back to the IDP a signed POST response with user session
# return HTML form content to browser with auto form validation
# to finally send request to the IDP
return HttpResponse(http_info['data'])
else:
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def logout_ls_saml2_view(request, config_loader_path=None,
next_page=None):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
"""Turn off saml2 """
_set_saml2_auth_used(request.session, False)
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
if 'SAMLResponse' in request.GET: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.logout_response(request.GET['SAMLResponse'],
binding=BINDING_HTTP_REDIRECT)
state.sync()
if response and response[1] == '200 Ok':
return logout_view(request)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
elif 'SAMLRequest' in request.GET: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout'
% request.user)
auth.logout(request)
return HttpResponse('Error during logout')
else:
response, success = client.logout_request(request.GET, subject_id)
state.sync()
if success:
logout_view(request)
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
elif response is not None:
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def logout_service(
request, config_loader_path=None, next_page=None, logout_error_template="djangosaml2/logout_error.html"
):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug("Logout service started")
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state, identity_cache=IdentityCache(request.session), logger=logger)
if "SAMLResponse" in request.GET: # we started the logout
logger.debug("Receiving a logout response from the IdP")
response = client.logout_response(request.GET["SAMLResponse"], binding=BINDING_HTTP_REDIRECT)
state.sync()
if response and response[1] == "200 Ok":
if next_page is None and hasattr(settings, "LOGOUT_REDIRECT_URL"):
next_page = settings.LOGOUT_REDIRECT_URL
logger.debug("Performing django_logout with a next_page of %s" % next_page)
return django_logout(request, next_page=next_page)
else:
logger.error("Unknown error during the logout")
return HttpResponse("Error during logout")
elif "SAMLRequest" in request.GET: # logout started by the IdP
logger.debug("Receiving a logout request from the IdP")
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
"The session does not contain the subject id for user %s. " + "Performing local logout" % request.user
)
auth.logout(request)
return render_to_response(logout_error_template, {}, context_instance=RequestContext(request))
else:
response, success = client.logout_request(request.GET, subject_id)
state.sync()
if success:
auth.logout(request)
assert response[0][0] == "Location"
url = response[0][1]
return HttpResponseRedirect(url)
elif response is not None:
assert response[0][0] == "Location"
url = response[0][1]
return HttpResponseRedirect(url)
else:
logger.error("Unknown error during the logout")
return HttpResponse("Error during logout")
else:
logger.error("No SAMLResponse or SAMLRequest parameter found")
raise Http404("No SAMLResponse or SAMLRequest parameter found")
def logout_service(request, config_loader_path=None, next_page=None):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
if 'SAMLResponse' in request.GET: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.logout_response(request.GET['SAMLResponse'],
binding=BINDING_HTTP_REDIRECT)
state.sync()
if response and response[1] == '200 Ok':
if next_page is None and hasattr(settings, 'LOGOUT_REDIRECT_URL'):
next_page = settings.LOGOUT_REDIRECT_URL
logger.debug('Performing django_logout with a next_page of %s'
% next_page)
return django_logout(request, next_page=next_page)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
elif 'SAMLRequest' in request.GET: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
response, success = client.logout_request(request.GET, subject_id)
state.sync()
if success:
auth.logout(request)
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
elif response is not None:
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
initiate_global_logout = get_custom_setting('DJANGOSAML_INITIATE_GLOBAL_LOGOUT', default=True)
# Handle SP that should NOT initiate a global logout
if not initiate_global_logout:
logger.debug('SP cannot initiate a global logout. Doing local logout for %s and redirecting to %s' % (request.user, settings.LOGOUT_REDIRECT_URL))
auth.logout(request)
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s',
request.user)
result = client.global_logout(subject_id)
state.sync()
if not result:
logger.error("Looks like the user %s is not logged in any IdP/AA", subject_id)
return HttpResponseBadRequest("You are not logged in any IdP/AA")
if len(result) > 1:
logger.error('Sorry, I do not know how to logout from several sources. I will logout just from the first one')
for entityid, logout_info in result.items():
if isinstance(logout_info, tuple):
binding, http_info = logout_info
if binding == BINDING_HTTP_POST:
logger.debug('Returning form to the IdP to continue the logout process')
body = ''.join(http_info['data'])
return HttpResponse(body)
elif binding == BINDING_HTTP_REDIRECT:
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('Unknown binding: %s', binding)
return HttpResponseServerError('Failed to log out')
else:
# We must have had a soap logout
return finish_logout(request, logout_info)
logger.error('Could not logout because there only the HTTP_REDIRECT is supported')
return HttpResponseServerError('Logout Binding not supported')
def logout_service(request, config_loader_path=None, next_page=None):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
if 'SAMLResponse' in request.GET: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.logout_response(request.GET['SAMLResponse'],
binding=BINDING_HTTP_REDIRECT)
state.sync()
if response and response[1] == '200 Ok':
return django_logout(request, next_page=next_page)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
elif 'SAMLRequest' in request.GET: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
response, success = client.logout_request(request.GET, subject_id)
state.sync()
if success:
auth.logout(request)
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
elif response is not None:
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def do_logout_service(request,
data,
binding,
config_loader_path=None,
next_page=None,
logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.session))
if 'SAMLResponse' in data: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.parse_logout_request_response(
data['SAMLResponse'], binding)
state.sync()
return finish_logout(request, response, next_page=next_page)
elif 'SAMLRequest' in data: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout'
% request.user)
auth.logout(request)
return render_to_response(logout_error_template, {},
context_instance=RequestContext(request))
else:
http_info = client.handle_logout_request(data['SAMLRequest'],
subject_id, binding)
state.sync()
auth.logout(request)
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
logger.debug('Logout process started')
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contains the subject id for user %s',
request.user)
result = client.global_logout(subject_id)
state.sync()
if not result:
logger.error("Looks like the user %s is not logged in any IdP/AA", subject_id)
return HttpResponseBadRequest("You are not logged in any IdP/AA")
if len(result) > 1:
logger.error('Sorry, I do not know how to logout from several sources. I will logout just from the first one')
for entityid, logout_info in result.items():
if isinstance(logout_info, tuple):
binding, http_info = logout_info
if binding == BINDING_HTTP_POST:
logger.debug('Returning form to the IdP to continue the logout process')
body = ''.join(http_info['data'])
return HttpResponse(body)
elif binding == BINDING_HTTP_REDIRECT:
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('Unknown binding: %s', binding)
return HttpResponseServerError('Failed to log out')
else:
# We must have had a soap logout
return finish_logout(request, logout_info)
logger.error('Could not logout because there only the HTTP_REDIRECT is supported')
return HttpResponseServerError('Logout Binding not supported')
def do_logout_service(request, data, binding, config_loader_path=None, next_page=None, logout_error_template='djangosaml2/logout_error.html'):
"""
SAML Logout Response endpoint
The IdP will send the logout response to this view, which will process it with pysaml2 help and log the user out.
Note that the IdP can request a logout even when we didn't initiate the process as a single logout request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state, identity_cache=IdentityCache(request.session))
if 'SAMLResponse' in data: # we started the logout
logger.debug('Receiving a logout response from the IdP')
try:
response = client.parse_logout_request_response(data['SAMLResponse'], binding)
state.sync()
except:
traceback_info = '\n'.join(traceback.format_exception(*(sys.exc_info())))
logger.warning('Encountered the following error when calling Saml2Client.global_logout(): %s' % traceback_info)
auth.logout(request)
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
else:
return finish_logout(request, response, next_page=next_page)
elif 'SAMLRequest' in data: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning('The session does not contain the subject id for user %s. Performing local logout' % request.user)
auth.logout(request)
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
else:
http_info = client.handle_logout_request(data['SAMLRequest'], subject_id, binding)
state.sync()
auth.logout(request)
redirect_location = settings.LOGOUT_REDIRECT_URL
try:
redirect_location = get_location(http_info)
except:
traceback_info = '\n'.join(traceback.format_exception(*(sys.exc_info())))
logger.error('Encountered the following error calling get_location(http_info) with an http_info value of %s: %s' % (http_info, traceback_info))
return HttpResponseRedirect(redirect_location)
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
return failure_redirect("No SAMLResponse or SAMLRequest parameter found.")
def do_logout_service(request, data, binding, config_loader_path=None, next_page=None,
logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session))
if 'SAMLResponse' in data: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.parse_logout_request_response(data['SAMLResponse'], binding)
state.sync()
return finish_logout(request, response, next_page=next_page)
elif 'SAMLRequest' in data: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout',
request.user)
auth.logout(request)
return render_to_response(logout_error_template, {},
context_instance=RequestContext(request))
else:
http_info = client.handle_logout_request(
data['SAMLRequest'],
subject_id,
binding)
state.sync()
auth.logout(request)
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
logger.debug('Logout process started')
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
subject_id = _get_subject_id(request.session)
session_id, code, head, body = client.global_logout(subject_id)
headers = dict(head)
state.sync()
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(headers['Location'])
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
logger.debug("Logout process started")
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state, identity_cache=IdentityCache(request.session), logger=logger)
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning("The session does not contains the subject id for user %s" % request.user)
session_id, code, head, body = client.global_logout(subject_id)
headers = dict(head)
state.sync()
logger.debug("Redirecting to the IdP to continue the logout process")
return HttpResponseRedirect(headers["Location"])
def logout(request, config_loader_path=None):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
logger.debug('Logout process started')
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
subject_id = _get_subject_id(request.session)
session_id, code, head, body = client.global_logout(subject_id)
headers = dict(head)
state.sync()
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(headers['Location'])
def get(self, request):
state = StateCache(request.session)
conf = get_config(request=request)
client = Saml2Client(conf, state_cache=state, identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
return logout_failed(_('You cannot be logged out.'))
try:
result = client.global_logout(subject_id)
except KeyError:
return logout_failed(_('You are not logged in any IdP/AA.'))
state.sync()
if not result:
return logout_failed(_('You are not logged in any IdP/AA.'))
# Logout is supported only from 1 IdP
binding, http_info = result.values()[0]
return HttpResponseRedirect(get_location(http_info))
def logout_service(request, config_loader_path=None, next_page=None,
logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session),
logger=logger)
if 'SAMLResponse' in request.GET: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.logout_response(request.GET['SAMLResponse'],
binding=BINDING_HTTP_REDIRECT)
state.sync()
if response and response[1] == '200 Ok':
if next_page is None and hasattr(settings, 'LOGOUT_REDIRECT_URL'):
next_page = settings.LOGOUT_REDIRECT_URL
logger.debug('Performing django_logout with a next_page of %s'
% next_page)
return django_logout(request, next_page=next_page)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
elif 'SAMLRequest' in request.GET: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout'
% request.user)
auth.logout(request)
return render_to_response(logout_error_template, {},
context_instance=RequestContext(request))
else:
response, success = client.logout_request(request.GET, subject_id)
state.sync()
if success:
auth.logout(request)
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
elif response is not None:
assert response[0][0] == 'Location'
url = response[0][1]
return HttpResponseRedirect(url)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')
def spid_logout(request, config_loader_path=None, **kwargs):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
if not request.user.is_authenticated:
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
state = StateCache(request.saml_session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf,
state_cache=state,
identity_cache=IdentityCache(request.saml_session))
# whatever happens, however, the user will be logged out of this sp
auth.logout(request)
state.sync()
subject_id = djangosaml2_views._get_subject_id(request.saml_session)
if subject_id is None:
logger.warning(
f"The session does not contain the subject id for user {request.user}"
)
logger.error(
f"Looks like the user {subject_id} is not logged in any IdP/AA")
return HttpResponseBadRequest("You are not logged in any IdP/AA")
slo_req = saml2.samlp.LogoutRequest()
slo_req.destination = subject_id.name_qualifier
# spid-testenv2 preleva l'attribute consumer service dalla authnRequest (anche se questo sta già nei metadati...)
slo_req.attribute_consuming_service_index = "0"
issuer = saml2.saml.Issuer()
issuer.name_qualifier = client.config.entityid
issuer.text = client.config.entityid
issuer.format = "urn:oasis:names:tc:SAML:2.0:nameid-format:entity"
slo_req.issuer = issuer
# message id
slo_req.id = saml2.s_utils.sid()
slo_req.version = saml2.VERSION # "2.0"
slo_req.issue_instant = saml2.time_util.instant()
# oggetto
slo_req.name_id = subject_id
try:
session_info = client.users.get_info_from(slo_req.name_id,
subject_id.name_qualifier,
False)
except KeyError as e:
logger.error(f"SPID Logout error: {e}")
return HttpResponseRedirect("/")
session_indexes = [session_info["session_index"]]
# aggiungere session index
if session_indexes:
sis = []
for si in session_indexes:
if isinstance(si, saml2.samlp.SessionIndex):
sis.append(si)
else:
sis.append(saml2.samlp.SessionIndex(text=si))
slo_req.session_index = sis
slo_req.protocol_binding = SAML2_DEFAULT_BINDING
assertion_consumer_service_url = client.config._sp_endpoints[
"assertion_consumer_service"][0][0]
slo_req.assertion_consumer_service_url = assertion_consumer_service_url
slo_req_signed = client.sign(
slo_req,
sign_prepare=False,
sign_alg=settings.SPID_SIG_ALG,
digest_alg=settings.SPID_DIG_ALG,
)
_req_str = slo_req_signed
logger.debug(
f"LogoutRequest to {subject_id.name_qualifier}: {repr_saml_request(_req_str)}"
)
slo_location = client.metadata.single_logout_service(
subject_id.name_qualifier, SAML2_DEFAULT_BINDING,
"idpsso")[0]["location"]
if not slo_location:
error_message = f"Unable to know SLO endpoint in {subject_id.name_qualifier}"
logger.error(error_message)
return HttpResponse(error_message)
http_info = client.apply_binding(
SAML2_DEFAULT_BINDING,
_req_str,
slo_location,
sign=True,
sigalg=settings.SPID_SIG_ALG,
)
state.sync()
return HttpResponse(http_info["data"])
def logout(request, config_loader_path=None):
"""
SAML Logout Request initiator
This view initiates the SAML2 Logout request using the pysaml2 library to create the LogoutRequest.
"""
logger.debug('Logout process started')
initiate_global_logout = get_custom_setting('DJANGOSAML_INITIATE_GLOBAL_LOGOUT', default=True)
# Handle SP that should NOT initiate a global logout
if not initiate_global_logout:
logger.debug('SP cannot initiate a global logout. Doing local logout for %s and redirecting to %s' % (request.user, settings.LOGOUT_REDIRECT_URL))
auth.logout(request)
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
# Handle SP that should initiate a global logout
if not request.user.is_authenticated():
logger.debug('User is not authenticated. Redirecting to settings.LOGOUT_REDIRECT_URL')
return HttpResponseRedirect(settings.LOGOUT_REDIRECT_URL)
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state, identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning('The session does not contains the subject id for user %s' % request.user)
try:
result = client.global_logout(subject_id)
except Exception as e:
traceback_info = '\n'.join(traceback.format_exception(*(sys.exc_info())))
logger.warning('Encountered the following error when calling Saml2Client.global_logout(): %s' % traceback_info)
return failure_redirect('Encountered the following error when trying to do a global logout: %s.' % e)
state.sync()
if not result:
logger.error("Looks like the user %s is not logged in any IdP/AA" % subject_id)
return failure_redirect("You are not logged into any IdP/AA")
if len(result) > 1:
logger.error('Sorry, I do not know how to logout from several sources. I will logout just from the first one')
for entityid, logout_info in result.items():
if isinstance(logout_info, tuple):
binding, http_info = logout_info
if binding == BINDING_HTTP_POST:
logger.debug('Returning form to the IdP to continue the logout process')
body = ''.join(http_info['data'])
logger.debug("Body = %s" % body)
return HttpResponse(body)
elif binding == BINDING_HTTP_REDIRECT:
logger.debug('Redirecting to the IdP to continue the logout process')
return HttpResponseRedirect(get_location(http_info))
else:
logger.error('Unknown binding: %s', binding)
return failure_redirect("Failed to log out.")
else:
# We must have had a soap logout
return finish_logout(request, logout_info)
logger.error('Could not logout because there only the HTTP_REDIRECT is supported')
return failure_redirect("Logout Binding not supported")
def spid_logout(request, config_loader_path=None, **kwargs):
"""SAML Logout Request initiator
This view initiates the SAML2 Logout request
using the pysaml2 library to create the LogoutRequest.
"""
state = StateCache(request.session)
conf = get_config(config_loader_path, request)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session))
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s',
request.user)
logger.error("Looks like the user %s is not logged in any IdP/AA", subject_id)
return HttpResponseBadRequest("You are not logged in any IdP/AA")
slo_req = saml2.samlp.LogoutRequest()
binding = settings.SPID_DEFAULT_BINDING
location_fixed = subject_id.name_qualifier
location = location_fixed
slo_req.destination = location_fixed
# spid-testenv2 preleva l'attribute consumer service dalla authnRequest (anche se questo sta già nei metadati...)
slo_req.attribute_consuming_service_index = "0"
# import pdb; pdb.set_trace()
issuer = saml2.saml.Issuer()
issuer.name_qualifier = client.config.entityid
issuer.text = client.config.entityid
issuer.format = "urn:oasis:names:tc:SAML:2.0:nameid-format:entity"
slo_req.issuer = issuer
# message id
slo_req.id = saml2.s_utils.sid()
slo_req.version = saml2.VERSION # "2.0"
slo_req.issue_instant = saml2.time_util.instant()
# oggetto
slo_req.name_id = subject_id
session_info = client.users.get_info_from(slo_req.name_id,
subject_id.name_qualifier,
False)
session_indexes = [session_info['session_index']]
# aggiungere session index
if session_indexes:
sis = []
for si in session_indexes:
if isinstance(si, saml2.samlp.SessionIndex):
sis.append(si)
else:
sis.append(saml2.samlp.SessionIndex(text=si))
slo_req.session_index = sis
slo_req.protocol_binding = binding
assertion_consumer_service_url = client.config._sp_endpoints['assertion_consumer_service'][0][0]
slo_req.assertion_consumer_service_url = assertion_consumer_service_url
slo_req_signed = client.sign(slo_req, sign_prepare=False,
sign_alg=settings.SPID_ENC_ALG,
digest_alg=settings.SPID_DIG_ALG)
session_id = slo_req.id
_req_str = slo_req_signed
logger.debug('LogoutRequest to {}: {}'.format(subject_id.name_qualifier,
repr_saml(_req_str)))
# get slo from metadata
slo_location = None
# for k,v in client.metadata.metadata.items():
# idp_nq = v.entity.get(subject_id.name_qualifier)
# if idp_nq:
# slo_location = idp_nq['idpsso_descriptor'][0]['single_logout_service'][0]['location']
slo_location = client.metadata.single_logout_service(subject_id.name_qualifier,
binding,
"idpsso")[0]['location']
if not slo_location:
logger.error('Unable to know SLO endpoint in {}'.format(subject_id.name_qualifier))
return HttpResponse(text_type(e))
http_info = client.apply_binding(binding,
_req_str,
slo_location,
sign=True,
sigalg=settings.SPID_ENC_ALG)
state.sync()
return HttpResponse(http_info['data'])
def logout_service(request, config_loader_path=None, next_page=None,
logout_error_template='djangosaml2/logout_error.html'):
"""SAML Logout Response endpoint
The IdP will send the logout response to this view,
which will process it with pysaml2 help and log the user
out.
Note that the IdP can request a logout even when
we didn't initiate the process as a single logout
request started by another SP.
"""
logger.debug('Logout service started')
conf = get_config(config_loader_path, request)
state = StateCache(request.session)
client = Saml2Client(conf, state_cache=state,
identity_cache=IdentityCache(request.session)
)
if 'SAMLResponse' in request.GET: # we started the logout
logger.debug('Receiving a logout response from the IdP')
response = client.parse_logout_request_response(request.GET["SAMLResponse"], binding=BINDING_HTTP_REDIRECT)
action = client.handle_logout_response(response)
state.sync()
if action and action[1] == '200 Ok':
if next_page is None and hasattr(settings, 'LOGOUT_REDIRECT_URL'):
next_page = settings.LOGOUT_REDIRECT_URL
logger.debug('Performing django_logout with a next_page of %s'
% next_page)
return django_logout(request, next_page=next_page)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
elif 'SAMLRequest' in request.GET: # logout started by the IdP
logger.debug('Receiving a logout request from the IdP')
subject_id = _get_subject_id(request.session)
if subject_id is None:
logger.warning(
'The session does not contain the subject id for user %s. Performing local logout'
% request.user)
auth.logout(request)
return render_to_response(logout_error_template, {},
context_instance=RequestContext(request))
else:
response = client.handle_logout_request(request.GET["SAMLRequest"], subject_id, binding=BINDING_HTTP_REDIRECT)
state.sync()
if response['headers']:
headers = response['headers']
auth.logout(request)
assert headers[0][0] == 'Location'
url = headers[0][1]
return HttpResponseRedirect(url)
else:
logger.error('Unknown error during the logout')
return HttpResponse('Error during logout')
else:
logger.error('No SAMLResponse or SAMLRequest parameter found')
raise Http404('No SAMLResponse or SAMLRequest parameter found')