Source code for kadi.modules.sysadmin.utils

# Copyright 2021 Karlsruhe Institute of Technology
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
from functools import wraps
from uuid import uuid4

from flask import abort
from flask_login import current_user
from flask_login import login_required

import kadi.lib.constants as const
from kadi.lib.config.core import get_sys_config
from kadi.lib.config.core import remove_sys_config
from kadi.lib.config.core import set_sys_config
from kadi.lib.config.models import ConfigItem
from import delete_thumbnail
from import save_as_thumbnail

[docs]def sysadmin_required(func): """Decorator to add access restrictions based on sysadmin status to an endpoint. If the current user is not authenticated, the decorator will behave the same as Flask-Login's ``login_required`` decorator. """ @wraps(func) def wrapper(*args, **kwargs): if not current_user.is_sysadmin: abort(404) return func(*args, **kwargs) return login_required(wrapper)
[docs]def save_index_image(stream): """Save image data as the global index image config item. Uses :func:`` to store the actual image data and :const:`kadi.lib.constants.SYS_CONFIG_INDEX_IMAGE` as the key for the config item. Note that any previous index image will be deleted beforehand using :func:`delete_index_image`, which will also be called if the image could not be saved. :param stream: The image data as a readable binary stream. """ delete_index_image() config_item = set_sys_config(const.SYS_CONFIG_INDEX_IMAGE, str(uuid4())) if not save_as_thumbnail(config_item.value, stream, max_resolution=(1_024, 1_024)): delete_index_image()
[docs]def delete_index_image(): """Delete the global index image config item. This is the inverse operation of :func:`save_index_image`. """ image_identifier = get_sys_config(const.SYS_CONFIG_INDEX_IMAGE, use_fallback=False) if image_identifier: delete_thumbnail(image_identifier) remove_sys_config(const.SYS_CONFIG_INDEX_IMAGE)
[docs]def legals_acceptance_required(): """Check whether users need to accept the configured legal notices. :return: ``True`` if any of the relevant legal notices are configured and accepting them is enforced, ``False`` otherwise. """ if not get_sys_config(const.SYS_CONFIG_ENFORCE_LEGALS): return False for key in [const.SYS_CONFIG_TERMS_OF_USE, const.SYS_CONFIG_PRIVACY_POLICY]: if get_sys_config(key): return True return False
[docs]def get_legals_modification_date(): """Get the latest modification date of the configured legal notices. Note that only config items in the database are considered, as only these track their modification date. :return: The latest modification date as a datetime object as specified in Python's ``datetime`` module or ``None`` if none of the relevant legal notices is configured in the database. """ modification_dates = [] for key in [const.SYS_CONFIG_TERMS_OF_USE, const.SYS_CONFIG_PRIVACY_POLICY]: config_item = ConfigItem.query.filter( ConfigItem.key == key, ConfigItem.user_id.is_(None) ).first() if config_item is not None: modification_dates.append(config_item.last_modified) if modification_dates: return max(modification_dates) return None