ki-backend/ki/auth.py

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# SPDX-FileCopyrightText: WTF Kooperative eG <https://wtf-eg.de/>
#
# SPDX-License-Identifier: AGPL-3.0-or-later
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import uuid
import yaml
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from ldap3 import Server, Connection, ALL
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from app import app, db
from ki.models import User, Token
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def create_user_token(username):
user = User.query.filter(User.auth_id.__eq__(username)).first()
if user is None:
user = User(auth_id=username)
db.session.add(user)
token = Token(token=str(uuid.uuid4()), user=user)
db.session.add(token)
db.session.commit()
return token
def file_auth(username, password):
app.logger.debug("performing file authentication")
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auth_file_path = app.config["KI_DATA_DIR"] + "/auth.yml"
with open(auth_file_path, "r") as auth_file_stream:
users = yaml.safe_load(auth_file_stream)
if username not in users:
return None
auth_user = users[username]
if auth_user["password"] != password:
return None
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return create_user_token(username)
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def ldap_auth(username, password):
app.logger.debug("performing LDAP authentication")
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server = Server(app.config['KI_LDAP_URL'], get_info=ALL)
root_dn = app.config['KI_LDAP_ROOT_DN']
ldap_user = f"cn={username},{root_dn}"
app.logger.debug(f"server: {server}")
connection = Connection(server, user=ldap_user, password=password)
if connection.bind():
connection.unbind()
return create_user_token(username)
connection.unbind()
return None
def auth(username, password):
if app.config['KI_AUTH'] == 'file':
return file_auth(username, password)
if app.config['KI_AUTH'] == 'ldap':
return ldap_auth(username, password)
raise RuntimeError('unknown auth method')