django-oidc-provider/oidc_provider/views.py

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import logging
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from Crypto.PublicKey import RSA
from django.contrib.auth.views import redirect_to_login, logout
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from django.core.urlresolvers import reverse
from django.http import JsonResponse
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from django.shortcuts import render
from django.template.loader import render_to_string
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from django.views.decorators.http import require_http_methods
from django.views.generic import View
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from hashlib import md5
from jwkest import long_to_base64
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from oidc_provider.lib.endpoints.authorize import *
from oidc_provider.lib.endpoints.token import *
from oidc_provider.lib.endpoints.userinfo import *
from oidc_provider.lib.errors import *
from oidc_provider.lib.utils.common import redirect, get_issuer, get_rsa_key
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logger = logging.getLogger(__name__)
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class AuthorizeView(View):
def get(self, request, *args, **kwargs):
authorize = AuthorizeEndpoint(request)
try:
authorize.validate_params()
if request.user.is_authenticated():
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# Check if there's a hook setted.
hook_resp = settings.get('OIDC_AFTER_USERLOGIN_HOOK', import_str=True)(
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request=request, user=request.user,
client=authorize.client)
if hook_resp:
return hook_resp
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if settings.get('OIDC_SKIP_CONSENT_ENABLE'):
# Check if user previously give consent.
if authorize.client_has_user_consent():
uri = authorize.create_response_uri()
return redirect(uri)
# Generate hidden inputs for the form.
context = {
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'params': authorize.params,
}
hidden_inputs = render_to_string(
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'oidc_provider/hidden_inputs.html', context)
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# Remove `openid` from scope list
# since we don't need to print it.
authorize.params.scope.remove('openid')
context = {
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'client': authorize.client,
'hidden_inputs': hidden_inputs,
'params': authorize.params,
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}
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return render(request, 'oidc_provider/authorize.html', context)
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else:
path = request.get_full_path()
return redirect_to_login(path)
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except (ClientIdError, RedirectUriError) as error:
context = {
'error': error.error,
'description': error.description,
}
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return render(request, 'oidc_provider/error.html', context)
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except (AuthorizeError) as error:
uri = error.create_uri(
authorize.params.redirect_uri,
authorize.params.state)
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return redirect(uri)
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def post(self, request, *args, **kwargs):
authorize = AuthorizeEndpoint(request)
allow = True if request.POST.get('allow') else False
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try:
authorize.validate_params()
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if not allow:
raise AuthorizeError(authorize.params.redirect_uri,
'access_denied',
authorize.grant_type)
# Save the user consent given to the client.
authorize.set_client_user_consent()
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uri = authorize.create_response_uri()
return redirect(uri)
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except (AuthorizeError) as error:
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uri = error.create_uri(
authorize.params.redirect_uri,
authorize.params.state)
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return redirect(uri)
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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)
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@require_http_methods(['GET', 'POST'])
def userinfo(request):
userinfo = UserInfoEndpoint(request)
try:
userinfo.validate_params()
dic = userinfo.create_response_dic()
return UserInfoEndpoint.response(dic)
except (UserInfoError) as error:
return UserInfoEndpoint.error_response(
error.code,
error.description,
error.status)
class ProviderInfoView(View):
def get(self, request, *args, **kwargs):
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dic = dict()
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dic['issuer'] = get_issuer()
SITE_URL = settings.get('SITE_URL')
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:logout')
from oidc_provider.models import Client
types_supported = [x[0] for x in Client.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'] = ['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' ]
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return JsonResponse(dic)
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class JwksView(View):
def get(self, request, *args, **kwargs):
dic = dict(keys=[])
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key = get_rsa_key().encode('utf-8')
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public_key = RSA.importKey(key).publickey()
dic['keys'].append({
'kty': 'RSA',
'alg': 'RS256',
'use': 'sig',
'kid': md5(key).hexdigest(),
'n': long_to_base64(public_key.n),
'e': long_to_base64(public_key.e),
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})
response = JsonResponse(dic)
response['Access-Control-Allow-Origin'] = '*'
return response
class LogoutView(View):
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def get(self, request, *args, **kwargs):
# We should actually verify if the requested redirect URI is safe
return logout(request, next_page=request.GET.get('post_logout_redirect_uri'))