ScoDoc/app/auth/logic.py

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# -*- coding: UTF-8 -*
"""app.auth.logic.py
"""
import http
import flask
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from flask import current_app, g, redirect, request, url_for
from flask_httpauth import HTTPBasicAuth, HTTPTokenAuth
import flask_login
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from app import db, log, login
from app.auth.models import User, Role
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from app.models.config import ScoDocSiteConfig
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from app.scodoc.sco_utils import json_error
basic_auth = HTTPBasicAuth()
token_auth = HTTPTokenAuth()
@basic_auth.verify_password
def verify_password(username, password) -> User | None:
"""Verify password for this user
Appelé lors d'une demande de jeton (normalement via la route /tokens)
"""
user: User = User.query.filter_by(user_name=username).first()
if user and user.check_password(password):
g.current_user = user
# note: est aussi basic_auth.current_user()
return user
return None
@basic_auth.error_handler
def basic_auth_error(status):
"error response (401 for invalid auth.)"
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return json_error(status)
@login.user_loader
def load_user(uid: str) -> User:
"flask-login: accès à un utilisateur"
return db.session.get(User, int(uid))
@token_auth.verify_token
def verify_token(token) -> User:
"""Retrouve l'utilisateur à partir du jeton.
Si la requête n'a pas de jeton, token == "".
"""
user = User.check_token(token) if token else None
if user is not None:
flask_login.login_user(user)
g.current_user = user
return user
@token_auth.error_handler
def token_auth_error(status):
"Réponse en cas d'erreur d'auth."
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return json_error(status)
@token_auth.get_user_roles
def get_user_roles(user) -> list[Role]:
"list roles"
return user.roles
@login.request_loader
def load_user_from_request(req: flask.Request) -> User:
"""Custom Login using Request Loader"""
# Try token
try:
auth_type, token = req.headers["Authorization"].split(None, 1)
except (ValueError, KeyError):
# The Authorization header is either empty or has no token
return None
if auth_type == "Bearer" and token:
return verify_token(token)
return None
@login.unauthorized_handler
def unauthorized():
"flask-login: si pas autorisé, redirige vers page login, sauf si API"
if request.blueprint in ("api", "apiweb"):
return json_error(http.HTTPStatus.UNAUTHORIZED, "Non autorise (logic)")
return redirect(url_for("auth.login"))
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def logout() -> flask.Response:
"""Logout the current user: If CAS session, logout from CAS. Redirect."""
if flask_login.current_user:
user_name = getattr(flask_login.current_user, "user_name", "anonymous")
current_app.logger.info(f"logout user {user_name}")
flask_login.logout_user()
if ScoDocSiteConfig.is_cas_enabled() and flask.session.get("scodoc_cas_login_date"):
flask.session.pop("scodoc_cas_login_date", None)
return redirect(url_for("cas.logout"))
return redirect(url_for("scodoc.index"))