337 lines
12 KiB
Python
337 lines
12 KiB
Python
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from authlib.integrations.base_client.errors import MissingTokenError, InvalidTokenError
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from base64 import b64encode, b64decode
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from flask import Blueprint, redirect, request
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from flask import current_app
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from flask import jsonify, session
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from flask import render_template, url_for
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from flask_login import logout_user, current_user
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from http import HTTPStatus
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from werkzeug.utils import redirect
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import logging
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from datetime import timedelta
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from flask.typing import ResponseReturnValue
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from ory_hydra_client.api.o_auth_2 import list_o_auth_2_consent_sessions, revoke_o_auth_2_consent_sessions
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from ory_hydra_client.models import GenericError
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from urllib.parse import urlparse
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from typing import Optional, Any
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import jwt
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from datetime import datetime, timedelta
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import webauthn
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from webauthn.helpers.structs import (
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AuthenticatorSelectionCriteria,
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PublicKeyCredentialDescriptor,
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ResidentKeyRequirement,
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UserVerificationRequirement,
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)
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from ..model import db, User, AppToken, PasskeyCredential
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from ..form.frontend import ClientCertForm, PasswordChangeForm, \
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AppTokenForm, AppTokenDeleteForm, PasskeyRegisterForm
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from ..form.base import ButtonForm
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from ..auth_providers import PasswordAuthProvider
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from .oauth2 import redirect_login, oauth2
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from ..hydra import hydra_service
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from ..pki import pki
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from ..lenticular_services import lenticular_services
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frontend_views = Blueprint('frontend', __name__, url_prefix='')
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logger = logging.getLogger(__name__)
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def get_current_user() -> User:
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user_any: Any = current_user
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user: User = user_any
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return user
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def before_request() -> Optional[ResponseReturnValue]:
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try:
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resp = oauth2.custom.get('/userinfo')
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if not get_current_user().is_authenticated or resp.status_code != 200:
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logger.info('user not logged in redirect')
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return redirect_login()
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except MissingTokenError:
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logger.info('MissingTokenError redirect user to login')
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return redirect_login()
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except InvalidTokenError:
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logger.info('InvalidTokenError redirect user to login')
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return redirect_login()
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return None
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frontend_views.before_request(before_request)
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@frontend_views.route('/logout')
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def logout() -> ResponseReturnValue:
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logout_user()
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return redirect(
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f'{current_app.config["HYDRA_PUBLIC_URL"]}/oauth2/sessions/logout')
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@frontend_views.route('/', methods=['GET'])
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def index() -> ResponseReturnValue:
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if 'next_url' in session:
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next_url = session['next_url']
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del session['next_url']
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return redirect(next_url)
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return render_template('frontend/index.html.j2')
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@frontend_views.route('/client_cert')
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def client_cert() -> ResponseReturnValue:
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client_certs = {}
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for service in lenticular_services.values():
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client_certs[str(service.name)] = \
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pki.get_client_certs(get_current_user(), service)
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return render_template(
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'frontend/client_cert.html.j2',
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services=lenticular_services,
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client_certs=client_certs)
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@frontend_views.route('/client_cert/<service_name>/<serial_number>')
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def get_client_cert(service_name, serial_number) -> ResponseReturnValue:
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service = lenticular_services[service_name]
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cert = pki.get_client_cert(
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get_current_user(), service, serial_number)
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return jsonify({
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'data': {
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'pem': cert.pem()}
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})
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@frontend_views.route(
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'/client_cert/<service_name>/<serial_number>', methods=['DELETE'])
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def revoke_client_cert(service_name, serial_number) -> ResponseReturnValue:
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service = lenticular_services[service_name]
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cert = pki.get_client_cert(
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get_current_user(), service, serial_number)
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pki.revoke_certificate(cert)
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return jsonify({})
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@frontend_views.route(
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'/client_cert/<service_name>/new',
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methods=['GET', 'POST'])
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def client_cert_new(service_name) -> ResponseReturnValue:
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if service_name not in lenticular_services:
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return '', 404
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service = lenticular_services[service_name]
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form = ClientCertForm()
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if form.validate_on_submit():
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valid_time = int(form.data['valid_time']) * timedelta(1, 0, 0)
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cert = pki.signing_publickey(
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get_current_user(),
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service,
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form.data['publickey'],
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valid_time=valid_time)
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return jsonify({
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'status': 'ok',
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'data': {
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'cert': cert.pem(),
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'ca_cert': pki.get_ca_cert_pem(service)
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}})
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elif form.is_submitted():
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return jsonify({
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'status': 'error',
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'errors': form.errors
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})
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return render_template(
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'frontend/client_cert_new.html.j2',
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service=service,
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form=form)
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@frontend_views.route('/app_token')
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def app_token() -> ResponseReturnValue:
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delete_form = AppTokenDeleteForm()
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form = ClientCertForm()
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return render_template('frontend/app_token.html.j2',
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delete_form=delete_form,
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services=lenticular_services)
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@frontend_views.route('/app_token/new', methods=['GET','POST'])
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def app_token_new() -> ResponseReturnValue:
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form = AppTokenForm()
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if form.validate_on_submit():
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user_any = get_current_user() # type: Any
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user = user_any # type: User
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app_token = AppToken.new(user, name="",scopes="")
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form.populate_obj(app_token)
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# check for duplicate names
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for user_app_token in user.app_tokens:
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if user_app_token.name == app_token.name:
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return 'name already exist', 400
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user.app_tokens.append(app_token)
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db.session.commit()
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return render_template('frontend/app_token_new_show.html.j2', app_token=app_token)
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return render_template('frontend/app_token_new.html.j2',
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form=form)
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@frontend_views.route('/app_token/<app_token_name>', methods=["POST"])
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def app_token_delete(app_token_name: str) -> ResponseReturnValue:
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form = AppTokenDeleteForm()
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if form.validate_on_submit():
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app_token = get_current_user().get_token_by_name(app_token_name)
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if app_token is None:
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return 'not found', 404
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db.session.delete(app_token)
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db.session.commit()
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return redirect(url_for('frontend.app_token'))
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## Passkey
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@frontend_views.route('/passkey/list', methods=['GET'])
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def passkey() -> ResponseReturnValue:
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"""list registered credentials for current user"""
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credentials = PasskeyCredential.query.all()
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return render_template('frontend/passkey_list.html.j2', credentials=credentials, button_form=ButtonForm())
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@frontend_views.route('/passkey/new', methods=['GET'])
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def passkey_new() -> ResponseReturnValue:
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"""register credential for current user"""
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public_url = urlparse(current_app.config['PUBLIC_URL'])
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user = get_current_user() # type: User
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form = PasskeyRegisterForm()
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options = webauthn.generate_registration_options(
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rp_name="Lenticluar Cloud",
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rp_id=public_url.hostname,
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user_id=str(user.id),
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user_name=user.username,
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authenticator_selection=AuthenticatorSelectionCriteria(
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user_verification=UserVerificationRequirement.REQUIRED,
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resident_key=ResidentKeyRequirement.REQUIRED,
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),
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exclude_credentials = list(map(lambda x: PublicKeyCredentialDescriptor(id=x.credential_id), user.passkey_credentials))
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)
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secret_key = current_app.config['SECRET_KEY']
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token = jwt.encode({
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'challenge': b64encode(options.challenge).decode(),
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'iat': datetime.utcnow() - timedelta(minutes=1),
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'nbf': datetime.utcnow(),
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'exp': datetime.utcnow() + timedelta(minutes=15),
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}, secret_key, algorithm="HS256"
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)
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return render_template(
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'frontend/passkey_new.html.j2',
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form=form,
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options=webauthn.options_to_json(options),
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token=token,
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)
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@frontend_views.route('/passkey/new', methods=['POST'])
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def passkey_new_process() -> ResponseReturnValue:
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secret_key = current_app.config['SECRET_KEY']
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public_url = urlparse(current_app.config['PUBLIC_URL'])
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user = get_current_user()
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data = request.get_json()
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try:
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token = jwt.decode(
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data['token'], secret_key, algorithms=['HS256'],
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options = {
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'require': ["challenge", "exp", "iat", "nbf"],
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})
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except jwt.exceptions.MissingRequiredClaimError:
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return jsonify({'message': "invalid token"}), 400
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challenge = b64decode(token['challenge'])
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credential = data['credential']
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name = data['name']
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result = webauthn.verify_registration_response(
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credential = credential,
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expected_rp_id = public_url.hostname,
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expected_challenge = challenge,
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expected_origin = [ public_url.geturl() ],
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)
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if not result.user_verified:
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return jsonify({ "message": "invalid auth" }), 403
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db.session.add(PasskeyCredential(
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id=None,
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user_id=user.id,
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credential_id=result.credential_id,
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credential_public_key=result.credential_public_key,
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name=name,
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))
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db.session.commit()
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logger.info(f"add new passkey for user {user.username}")
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return jsonify({})
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@frontend_views.route('/passkey/delete/<id>', methods=['POST'])
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def passkey_delete(id: str) -> ResponseReturnValue:
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"""delete registered credential"""
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form = ButtonForm()
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if form.validate_on_submit():
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cred = PasskeyCredential.query.filter(PasskeyCredential.id == id).first_or_404()
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db.session.delete(cred)
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db.session.commit()
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return redirect(url_for('.passkey'))
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return '', HTTPStatus.BAD_REQUEST
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@frontend_views.route('/password_change')
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def password_change() -> ResponseReturnValue:
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form = PasswordChangeForm()
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return render_template('frontend/password_change.html.j2', form=form)
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@frontend_views.route('/password_change', methods=['POST'])
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def password_change_post() -> ResponseReturnValue:
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form = PasswordChangeForm()
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if form.validate():
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password_old = str(form.data['password_old'])
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password_new = str(form.data['password_new'])
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if not PasswordAuthProvider.check_auth_internal(
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get_current_user(), password_old):
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return jsonify(
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{'errors': {'password_old': 'Old Password is invalid'}})
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get_current_user().change_password(password_new)
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logger.info(f"user {get_current_user().username} changed password")
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db.session.commit()
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return jsonify({})
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return jsonify({'errors': form.errors})
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@frontend_views.route('/oauth2_token')
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async def oauth2_tokens() -> ResponseReturnValue:
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subject = oauth2.custom.get('/userinfo').json()['sub']
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consent_sessions = await list_o_auth_2_consent_sessions.asyncio(subject=subject, _client=hydra_service.hydra_client)
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if consent_sessions is None or isinstance( consent_sessions, GenericError):
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return 'internal error, could not fetch sessions', 500
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return render_template(
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'frontend/oauth2_tokens.html.j2',
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consent_sessions=consent_sessions)
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@frontend_views.route('/oauth2_token/<client_id>', methods=['DELETE'])
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async def oauth2_token_revoke(client_id: str) -> ResponseReturnValue:
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subject = oauth2.session.get('/userinfo').json()['sub']
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await revoke_o_auth_2_consent_sessions.asyncio_detailed( _client=hydra_service.hydra_client,
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subject=subject,
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client=client_id)
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return jsonify({})
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