lenticular_cloud2/lenticular_cloud/views/oidc.py
2020-05-09 20:00:07 +02:00

114 lines
4.7 KiB
Python

from urllib.parse import urlencode, parse_qs
import flask
from flask import Blueprint, redirect
from flask import current_app, session
from flask import jsonify
from flask.helpers import make_response
from flask.templating import render_template
from oic.oic.message import TokenErrorResponse, UserInfoErrorResponse, EndSessionRequest
from flask_login import current_user, login_required
from pyop.access_token import AccessToken, BearerTokenError
from pyop.exceptions import InvalidAuthenticationRequest, InvalidAccessToken, InvalidClientAuthentication, OAuthError, \
InvalidSubjectIdentifier, InvalidClientRegistrationRequest
from pyop.util import should_fragment_encode
oidc_provider_views = Blueprint('oidc_provider', __name__, url_prefix='')
@oidc_provider_views.route('/registration', methods=['POST'])
def registration_endpoint():
try:
response = current_app.provider.handle_client_registration_request(flask.request.get_data().decode('utf-8'))
return make_response(jsonify(response.to_dict()), 201)
except InvalidClientRegistrationRequest as e:
print(e)
return make_response(jsonify(str(e)), 400)
@oidc_provider_views.route('/authentication', methods=['GET'])
@login_required
def authentication_endpoint():
# parse authentication request
print(flask.request)
print(flask.request.headers)
try:
auth_req = current_app.provider.parse_authentication_request(urlencode(flask.request.args),
flask.request.args)
except InvalidAuthenticationRequest as e:
current_app.logger.debug('received invalid authn request', exc_info=True)
error_url = e.to_error_url()
if error_url:
return redirect(error_url, 303)
else:
# show error to user
return make_response('Something went wrong: {}'.format(str(e)), 400)
# automagic authentication
authn_response = current_app.provider.authorize(auth_req, str(current_user.username))
response_url = authn_response.request(auth_req['redirect_uri'], should_fragment_encode(auth_req))
return redirect(response_url, 303)
@oidc_provider_views.route('/.well-known/openid-configuration')
def provider_configuration():
return jsonify(current_app.provider.provider_configuration.to_dict())
@oidc_provider_views.route('/jwks')
def jwks_uri():
return jsonify(current_app.provider.jwks)
@oidc_provider_views.route('/token', methods=['POST'])
def token_endpoint():
try:
token_response = current_app.provider.handle_token_request(flask.request.get_data().decode('utf-8'),
flask.request.headers)
return jsonify(token_response.to_dict())
except InvalidClientAuthentication as e:
current_app.logger.debug('invalid client authentication at token endpoint', exc_info=True)
error_resp = TokenErrorResponse(error='invalid_client', error_description=str(e))
response = make_response(error_resp.to_json(), 401)
response.headers['Content-Type'] = 'application/json'
response.headers['WWW-Authenticate'] = 'Basic'
return response
except OAuthError as e:
current_app.logger.debug('invalid request: %s', str(e), exc_info=True)
error_resp = TokenErrorResponse(error=e.oauth_error, error_description=str(e))
response = make_response(error_resp.to_json(), 400)
response.headers['Content-Type'] = 'application/json'
return response
@oidc_provider_views.route('/userinfo', methods=['GET', 'POST'])
def userinfo_endpoint():
try:
response = current_app.provider.handle_userinfo_request(flask.request.get_data().decode('utf-8'),
flask.request.headers)
return jsonify(response.to_dict())
except (BearerTokenError, InvalidAccessToken) as e:
error_resp = UserInfoErrorResponse(error='invalid_token', error_description=str(e))
response = make_response(error_resp.to_json(), 401)
response.headers['WWW-Authenticate'] = AccessToken.BEARER_TOKEN_TYPE
response.headers['Content-Type'] = 'application/json'
return response
def do_logout():
end_session_request = EndSessionRequest().deserialize(urlencode(flask.request.args)).to_dict()
try:
current_app.provider.logout_user(end_session_request=end_session_request)
except InvalidSubjectIdentifier as e:
return make_response('Logout unsuccessful!', 400)
redirect_url = current_app.provider.do_post_logout_redirect(end_session_request)
if redirect_url:
return redirect(redirect_url, 303)
return make_response('Logout successful!')