152 lines
4.0 KiB
Python
152 lines
4.0 KiB
Python
"""
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This file is part of Accountant.
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Accountant is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Accountant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with Accountant. If not, see <http://www.gnu.org/licenses/>.
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"""
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# vim: set tw=80 ts=4 sw=4 sts=4:
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from functools import wraps
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import arrow
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from flask import request, g, current_app as app
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from flask_restplus import Namespace, Resource, fields, marshal_with_field
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from ..fields import Object
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from ..models.users import User
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def load_user_from_token(token):
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"""Load user from token."""
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return User.verify_auth_token(token)
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def load_user_from_auth(auth):
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"""Load a user from authenticated session."""
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token = auth.replace('Bearer ', '', 1)
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return load_user_from_token(token)
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def requires_auth(func):
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"""Decorator to check user authentication before handling a request."""
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@wraps(func)
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def wrapped(*args, **data):
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"""Check user authentication from requests headers and return 401 if
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unauthorized."""
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user = None
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if 'Authorization' in request.headers:
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auth = request.headers['Authorization']
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user = load_user_from_auth(auth)
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if user:
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g.user = user
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return func(*args, **data)
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ns.abort(
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401,
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error_message='Please login before executing this request.'
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)
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return wrapped
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# pylint: disable=invalid-name
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ns = Namespace('user', description='User management')
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# Token with expiration time and type.
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token_model = ns.model('Token', {
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'token': fields.String(
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required=True,
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readonly=True,
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description='Token value'),
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'expiration': fields.DateTime(
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dt_format='iso8601',
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required=True,
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readonly=True,
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description='Expiration time of the token'),
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'token_type': fields.String(
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required=True,
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readonly=True,
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description='Token type')
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})
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# User model.
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user_model = ns.model('User', {
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'id': fields.Integer(
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default=None,
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required=True,
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readonly=True,
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description='Id of the user'),
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'email': fields.String(
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required=True,
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readonly=True,
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decription='Email address of the user'),
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'active': fields.Boolean(
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required=True,
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readonly=True,
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description='Active state of the user')
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})
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@ns.route('/login')
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class LoginResource(Resource):
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"""Resource to handle login operations."""
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@ns.marshal_with(token_model)
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@ns.doc(
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security='basic',
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responses={
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200: ('OK', token_model),
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401: 'Unauthorized'
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})
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def post(self):
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"""Login to retrieve authentication token."""
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email = request.authorization['username']
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password = request.authorization['password']
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user = User.query().filter(
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User.email == email
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).one_or_none()
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if not user or not user.verify_password(password):
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ns.abort(401, error_message="Bad user or password.")
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token = user.generate_auth_token()
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expiration_time = arrow.now().replace(
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seconds=app.config['SESSION_TTL']
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)
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return {
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'token': token,
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'expiration': expiration_time.datetime,
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'token_type': 'Bearer'
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}, 200
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@requires_auth
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@ns.doc(
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security='apikey',
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responses={
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200: ('OK', user_model)
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})
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@marshal_with_field(Object(user_model))
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def get(self):
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"""Get authenticated user information."""
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return g.user, 200
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