311 lines
11 KiB
Python
311 lines
11 KiB
Python
import logging
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try:
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from urllib import urlencode
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from urlparse import urlsplit, parse_qs, urlunsplit
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except ImportError:
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from urllib.parse import urlsplit, parse_qs, urlunsplit, urlencode
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from Cryptodome.PublicKey import RSA
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from django.contrib.auth.views import (
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redirect_to_login,
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logout,
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)
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from django.core.urlresolvers import reverse
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from django.http import JsonResponse
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from django.shortcuts import render
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from django.template.loader import render_to_string
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from django.utils.decorators import method_decorator
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from django.views.decorators.clickjacking import xframe_options_exempt
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from django.views.decorators.http import require_http_methods
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from django.views.generic import View
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from jwkest import long_to_base64
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from oidc_provider.lib.claims import StandardScopeClaims
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from oidc_provider.lib.endpoints.authorize import AuthorizeEndpoint
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from oidc_provider.lib.endpoints.token import TokenEndpoint
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from oidc_provider.lib.errors import (
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AuthorizeError,
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ClientIdError,
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RedirectUriError,
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TokenError,
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UserAuthError)
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from oidc_provider.lib.utils.common import (
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redirect,
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get_site_url,
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get_issuer,
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)
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from oidc_provider.lib.utils.oauth2 import protected_resource_view
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from oidc_provider.lib.utils.token import client_id_from_id_token
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from oidc_provider.models import (
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Client,
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RESPONSE_TYPE_CHOICES,
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RSAKey,
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)
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from oidc_provider import settings
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from oidc_provider import signals
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logger = logging.getLogger(__name__)
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OIDC_TEMPLATES = settings.get('OIDC_TEMPLATES')
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class AuthorizeView(View):
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def get(self, request, *args, **kwargs):
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authorize = AuthorizeEndpoint(request)
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try:
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authorize.validate_params()
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if request.user.is_authenticated():
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# Check if there's a hook setted.
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hook_resp = settings.get('OIDC_AFTER_USERLOGIN_HOOK', import_str=True)(
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request=request, user=request.user,
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client=authorize.client)
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if hook_resp:
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return hook_resp
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if settings.get('OIDC_SKIP_CONSENT_ALWAYS') and not (authorize.client.client_type == 'public') \
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and not (authorize.params['prompt'] == 'consent'):
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return redirect(authorize.create_response_uri())
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if settings.get('OIDC_SKIP_CONSENT_ENABLE'):
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# Check if user previously give consent.
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if authorize.client_has_user_consent() and not (authorize.client.client_type == 'public') \
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and not (authorize.params['prompt'] == 'consent'):
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return redirect(authorize.create_response_uri())
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if authorize.params['prompt'] == 'none':
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raise AuthorizeError(authorize.params['redirect_uri'], 'interaction_required', authorize.grant_type)
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if authorize.params['prompt'] == 'login':
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return redirect_to_login(request.get_full_path(), settings.get('OIDC_LOGIN_URL'))
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if authorize.params['prompt'] == 'select_account':
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# TODO: see how we can support multiple accounts for the end-user.
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raise AuthorizeError(authorize.params['redirect_uri'], 'account_selection_required', authorize.grant_type)
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# Generate hidden inputs for the form.
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context = {
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'params': authorize.params,
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}
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hidden_inputs = render_to_string('oidc_provider/hidden_inputs.html', context)
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# Remove `openid` from scope list
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# since we don't need to print it.
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if 'openid' in authorize.params['scope']:
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authorize.params['scope'].remove('openid')
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context = {
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'client': authorize.client,
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'hidden_inputs': hidden_inputs,
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'params': authorize.params,
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'scopes': authorize.get_scopes_information(),
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}
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return render(request, OIDC_TEMPLATES['authorize'], context)
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else:
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if authorize.params['prompt'] == 'none':
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raise AuthorizeError(authorize.params['redirect_uri'], 'login_required', authorize.grant_type)
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return redirect_to_login(request.get_full_path(), settings.get('OIDC_LOGIN_URL'))
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except (ClientIdError, RedirectUriError) as error:
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context = {
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'error': error.error,
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'description': error.description,
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}
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return render(request, OIDC_TEMPLATES['error'], context)
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except (AuthorizeError) as error:
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uri = error.create_uri(
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authorize.params['redirect_uri'],
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authorize.params['state'])
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return redirect(uri)
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def post(self, request, *args, **kwargs):
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authorize = AuthorizeEndpoint(request)
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try:
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authorize.validate_params()
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if not request.POST.get('allow'):
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signals.user_decline_consent.send(self.__class__, user=request.user, client=authorize.client, scope=authorize.params['scope'])
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raise AuthorizeError(authorize.params['redirect_uri'],
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'access_denied',
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authorize.grant_type)
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signals.user_accept_consent.send(self.__class__, user=request.user, client=authorize.client, scope=authorize.params['scope'])
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# Save the user consent given to the client.
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authorize.set_client_user_consent()
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uri = authorize.create_response_uri()
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return redirect(uri)
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except (AuthorizeError) as error:
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uri = error.create_uri(
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authorize.params['redirect_uri'],
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authorize.params['state'])
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return redirect(uri)
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class TokenView(View):
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def post(self, request, *args, **kwargs):
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token = TokenEndpoint(request)
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try:
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token.validate_params()
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dic = token.create_response_dic()
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return TokenEndpoint.response(dic)
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except TokenError as error:
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return TokenEndpoint.response(error.create_dict(), status=400)
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except UserAuthError as error:
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return TokenEndpoint.response(error.create_dict(), status=403)
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@require_http_methods(['GET', 'POST'])
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@protected_resource_view(['openid'])
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def userinfo(request, *args, **kwargs):
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"""
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Create a diccionary with all the requested claims about the End-User.
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See: http://openid.net/specs/openid-connect-core-1_0.html#UserInfoResponse
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Return a diccionary.
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"""
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token = kwargs['token']
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dic = {
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'sub': token.id_token.get('sub'),
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}
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standard_claims = StandardScopeClaims(token)
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dic.update(standard_claims.create_response_dic())
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if settings.get('OIDC_EXTRA_SCOPE_CLAIMS'):
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extra_claims = settings.get('OIDC_EXTRA_SCOPE_CLAIMS', import_str=True)(token)
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dic.update(extra_claims.create_response_dic())
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response = JsonResponse(dic, status=200)
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response['Access-Control-Allow-Origin'] = '*'
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response['Cache-Control'] = 'no-store'
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response['Pragma'] = 'no-cache'
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return response
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class ProviderInfoView(View):
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def get(self, request, *args, **kwargs):
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dic = dict()
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site_url = get_site_url(request=request)
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dic['issuer'] = get_issuer(site_url=site_url, request=request)
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dic['authorization_endpoint'] = site_url + reverse('oidc_provider:authorize')
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dic['token_endpoint'] = site_url + reverse('oidc_provider:token')
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dic['userinfo_endpoint'] = site_url + reverse('oidc_provider:userinfo')
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dic['end_session_endpoint'] = site_url + reverse('oidc_provider:end-session')
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types_supported = [x[0] for x in RESPONSE_TYPE_CHOICES]
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dic['response_types_supported'] = types_supported
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dic['jwks_uri'] = site_url + reverse('oidc_provider:jwks')
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dic['id_token_signing_alg_values_supported'] = ['HS256', 'RS256']
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# See: http://openid.net/specs/openid-connect-core-1_0.html#SubjectIDTypes
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dic['subject_types_supported'] = ['public']
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dic['token_endpoint_auth_methods_supported'] = ['client_secret_post',
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'client_secret_basic']
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if settings.get('OIDC_SESSION_MANAGEMENT_ENABLE'):
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dic['check_session_iframe'] = site_url + reverse('oidc_provider:check-session-iframe')
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response = JsonResponse(dic)
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response['Access-Control-Allow-Origin'] = '*'
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return response
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class JwksView(View):
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def get(self, request, *args, **kwargs):
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dic = dict(keys=[])
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for rsakey in RSAKey.objects.all():
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public_key = RSA.importKey(rsakey.key).publickey()
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dic['keys'].append({
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'kty': 'RSA',
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'alg': 'RS256',
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'use': 'sig',
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'kid': rsakey.kid,
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'n': long_to_base64(public_key.n),
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'e': long_to_base64(public_key.e),
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})
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response = JsonResponse(dic)
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response['Access-Control-Allow-Origin'] = '*'
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return response
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class EndSessionView(View):
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def get(self, request, *args, **kwargs):
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id_token_hint = request.GET.get('id_token_hint', '')
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post_logout_redirect_uri = request.GET.get('post_logout_redirect_uri', '')
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state = request.GET.get('state', '')
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client = None
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next_page = settings.get('OIDC_LOGIN_URL')
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after_end_session_hook = settings.get('OIDC_AFTER_END_SESSION_HOOK', import_str=True)
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if id_token_hint:
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client_id = client_id_from_id_token(id_token_hint)
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try:
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client = Client.objects.get(client_id=client_id)
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if post_logout_redirect_uri in client.post_logout_redirect_uris:
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if state:
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uri = urlsplit(post_logout_redirect_uri)
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query_params = parse_qs(uri.query)
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query_params['state'] = state
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uri = uri._replace(query=urlencode(query_params, doseq=True))
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next_page = urlunsplit(uri)
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else:
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next_page = post_logout_redirect_uri
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except Client.DoesNotExist:
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pass
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after_end_session_hook(
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request=request,
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id_token=id_token_hint,
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post_logout_redirect_uri=post_logout_redirect_uri,
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state=state,
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client=client,
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next_page=next_page
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)
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return logout(request, next_page=next_page)
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class CheckSessionIframeView(View):
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@method_decorator(xframe_options_exempt)
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def dispatch(self, request, *args, **kwargs):
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return super(CheckSessionIframeView, self).dispatch(request, *args, **kwargs)
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def get(self, request, *args, **kwargs):
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return render(request, 'oidc_provider/check_session_iframe.html', kwargs)
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