django-oidc-provider/oidc_provider/views.py
2016-12-01 16:20:34 -03:00

296 lines
10 KiB
Python

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