# uffd

This is the UserFerwaltungsFrontend.
A web service to manage LDAP users, groups and permissions.

## dependencies
- python3
- python3-ldap3
- python3-flask
- python3-flask-sqlalchemy
- python3-flask-migrate
- python3-qrcode
- python3-fido2 (version 0.5.0, optional)
- python3-flask-oauthlib
- git (cli utility, musst be in path)

Some of the dependencies (especially fido2 and flask-oauthlib) changed their API in recent versions, so make sure to install the versions from Debian Buster.
You can also use virtualenv with the supplied `requirements.txt`.

## development

Before running uffd, you need to create the database with `flask db upgrade`.
Then use `flask run` to start the application:

```
FLASK_APP=uffd flask db upgrade
FLASK_APP=uffd FLASK_ENV=development flask run
```

During development, you may want to enable LDAP mocking, as you otherwise need to have access to an actual LDAP server with the required schema.
You can do so by setting `LDAP_SERVICE_MOCK=True` in the config.
Afterwards you can login as a normal user with "testuser" and "userpassword", or as an admin with "testadmin" and "adminpassword".
Please note that the mocked LDAP functionality is very limited and many uffd features do not work correctly without a real LDAP server.

## deployment

Use uwsgi. Make sure to run `flask db upgrade` after every update!

### example uwsgi config

```
[uwsgi]
plugin = python3
env = PYTHONIOENCODING=UTF-8
env = LANG=en_GB.utf8
env = TZ=Europe/Berlin
manage-script-name = true
chdir = /var/www/uffd
module = uffd:create_app()

uid = uffd
gid = uffd

vacuum = true
die-on-term = true

hook-pre-app = exec:FLASK_APP=uffd flask db upgrade
```

## python style conventions

tabs.

## OAuth2 Single-Sign-On Provider

Other services can use uffd as an OAuth2.0-based authentication provider.
The required credentials (client_id, client_secret and redirect_uris) for these services are defined in the config.
The services need to be setup to use the following URLs with the Authorization Code Flow:

* `/oauth2/authorize`: authorization endpoint
* `/oauth2/token`: token request endpoint
* `/oauth2/userinfo`: endpoint that provides information about the current user

The userinfo endpoint returns json data with the following structure:

```
{
  "id": 10000,
  "name": "Test User",
  "nickname": "testuser"
  "email": "testuser@example.com",
  "ldap_dn": "uid=testuser,ou=users,dc=example,dc=com",
  "groups": [
    "uffd_access",
    "users"
  ],
}
```

`id` is the uidNumber, `name` the display name (cn) and `nickname` the uid of the user's LDAP object.