94 lines
3.7 KiB
Python
94 lines
3.7 KiB
Python
"""saml sp views"""
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import base64
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from defusedxml import ElementTree
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from django.contrib.auth import login, logout
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from django.http import Http404, HttpRequest, HttpResponse
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from django.shortcuts import get_object_or_404, redirect, render, reverse
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from django.utils.decorators import method_decorator
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from django.views import View
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from django.views.decorators.csrf import csrf_exempt
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from passbook.providers.saml.base import get_random_id, get_time_string
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from passbook.providers.saml.utils import nice64
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from passbook.providers.saml.views import render_xml
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from passbook.sources.saml.models import SAMLSource
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from passbook.sources.saml.utils import (_get_user_from_response,
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build_full_url, get_entity_id)
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from passbook.sources.saml.xml_render import get_authnrequest_xml
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class InitiateView(View):
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"""Get the Form with SAML Request, which sends us to the IDP"""
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def get(self, request: HttpRequest, source: str) -> HttpResponse:
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"""Replies with an XHTML SSO Request."""
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source: SAMLSource = get_object_or_404(SAMLSource, slug=source)
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if not source.enabled:
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raise Http404
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sso_destination = request.GET.get('next', None)
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request.session['sso_destination'] = sso_destination
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parameters = {
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'ACS_URL': build_full_url('acs', request, source),
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'DESTINATION': source.idp_url,
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'AUTHN_REQUEST_ID': get_random_id(),
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'ISSUE_INSTANT': get_time_string(),
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'ISSUER': get_entity_id(request, source),
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}
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authn_req = get_authnrequest_xml(parameters, signed=False)
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_request = nice64(str.encode(authn_req))
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return render(request, 'saml/sp/login.html', {
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'request_url': source.idp_url,
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'request': _request,
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'token': sso_destination,
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'source': source
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})
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@method_decorator(csrf_exempt, name='dispatch')
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class ACSView(View):
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"""AssertionConsumerService, consume assertion and log user in"""
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def post(self, request: HttpRequest, source: str) -> HttpResponse:
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"""Handles a POSTed SSO Assertion and logs the user in."""
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source: SAMLSource = get_object_or_404(SAMLSource, slug=source)
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if not source.enabled:
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raise Http404
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# sso_session = request.POST.get('RelayState', None)
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data = request.POST.get('SAMLResponse', None)
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response = base64.b64decode(data)
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root = ElementTree.fromstring(response)
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user = _get_user_from_response(root)
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# attributes = _get_attributes_from_response(root)
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login(request, user, backend='django.contrib.auth.backends.ModelBackend')
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return redirect(reverse('passbook_core:overview'))
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class SLOView(View):
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"""Single-Logout-View"""
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def dispatch(self, request: HttpRequest, source: str) -> HttpResponse:
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"""Replies with an XHTML SSO Request."""
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source: SAMLSource = get_object_or_404(SAMLSource, slug=source)
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if not source.enabled:
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raise Http404
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logout(request)
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return render(request, 'saml/sp/sso_single_logout.html', {
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'idp_logout_url': source.idp_logout_url,
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'autosubmit': source.auto_logout,
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})
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class MetadataView(View):
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"""Return XML Metadata for IDP"""
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def dispatch(self, request: HttpRequest, source: str) -> HttpResponse:
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"""Replies with the XML Metadata SPSSODescriptor."""
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source: SAMLSource = get_object_or_404(SAMLSource, slug=source)
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entity_id = get_entity_id(request, source)
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return render_xml(request, 'saml/sp/xml/spssodescriptor.xml', {
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'acs_url': build_full_url('acs', request, source),
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'entity_id': entity_id,
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'cert_public_key': source.signing_cert,
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})
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