forked from ScoDoc/ScoDoc
691 lines
25 KiB
Python
691 lines
25 KiB
Python
# -*- coding: UTF-8 -*
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"""Users and Roles models for ScoDoc
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"""
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import base64
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from datetime import datetime, timedelta
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import os
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import re
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from time import time
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from typing import Optional
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import cracklib # pylint: disable=import-error
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from flask import current_app, g
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from flask_login import UserMixin, AnonymousUserMixin
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from werkzeug.security import generate_password_hash, check_password_hash
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import jwt
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from app import db, email, log, login
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from app.models import Departement, ScoDocModel
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from app.models import SHORT_STR_LEN, USERNAME_STR_LEN
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from app.models.config import ScoDocSiteConfig
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from app.scodoc.sco_exceptions import ScoValueError
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from app.scodoc.sco_permissions import Permission
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from app.scodoc.sco_roles_default import SCO_ROLES_DEFAULTS
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import app.scodoc.sco_utils as scu
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VALID_LOGIN_EXP = re.compile(r"^[a-zA-Z0-9@\\\-_\.]+$")
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def is_valid_password(cleartxt) -> bool:
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"""Check password.
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returns True if OK.
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"""
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if (
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hasattr(scu.CONFIG, "MIN_PASSWORD_LENGTH")
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and scu.CONFIG.MIN_PASSWORD_LENGTH > 0
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and len(cleartxt) < scu.CONFIG.MIN_PASSWORD_LENGTH
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):
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return False # invalid: too short
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try:
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_ = cracklib.FascistCheck(cleartxt)
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return True
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except ValueError:
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return False
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def invalid_user_name(user_name: str) -> bool:
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"Check that user_name (aka login) is invalid"
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return (
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not user_name
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or (len(user_name) < 2)
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or (len(user_name) >= USERNAME_STR_LEN)
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or not VALID_LOGIN_EXP.match(user_name)
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)
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class User(UserMixin, db.Model, ScoDocModel):
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"""ScoDoc users, handled by Flask / SQLAlchemy"""
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id = db.Column(db.Integer, primary_key=True)
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user_name = db.Column(db.String(USERNAME_STR_LEN), index=True, unique=True)
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"le login"
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email = db.Column(db.String(120))
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"email à utiliser par ScoDoc"
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email_institutionnel = db.Column(db.String(120))
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"email dans l'établissement, facultatif"
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nom = db.Column(db.String(USERNAME_STR_LEN))
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prenom = db.Column(db.String(USERNAME_STR_LEN))
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dept = db.Column(db.String(SHORT_STR_LEN), index=True)
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"acronyme du département de l'utilisateur"
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active = db.Column(db.Boolean, default=True, index=True)
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"si faux, compte utilisateur désactivé"
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cas_id = db.Column(db.Text(), index=True, unique=True, nullable=True)
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"uid sur le CAS (id, mail ou autre attribut, selon config.cas_attribute_id)"
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cas_allow_login = db.Column(
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db.Boolean, default=False, server_default="false", nullable=False
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)
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"Peut-on se logguer via le CAS ?"
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cas_allow_scodoc_login = db.Column(
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db.Boolean, default=False, server_default="false", nullable=False
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)
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"""Si CAS forcé (cas_force), peut-on se logguer sur ScoDoc directement ?
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(le rôle ScoSuperAdmin peut toujours, mettre à True pour les utilisateur API)
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"""
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cas_last_login = db.Column(db.DateTime, nullable=True)
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"""date du dernier login via CAS"""
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edt_id = db.Column(db.Text(), index=True, nullable=True)
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"identifiant emplois du temps (unicité non imposée)"
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password_hash = db.Column(db.Text()) # les hashs modernes peuvent être très longs
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password_scodoc7 = db.Column(db.String(42))
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last_seen = db.Column(db.DateTime, default=datetime.utcnow)
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date_modif_passwd = db.Column(db.DateTime, default=datetime.utcnow)
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date_created = db.Column(db.DateTime, default=datetime.utcnow)
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date_expiration = db.Column(db.DateTime, default=None)
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passwd_temp = db.Column(db.Boolean, default=False)
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"""champ obsolete. Si connexion alors que passwd_temp est vrai,
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efface mot de passe et redirige vers accueil."""
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token = db.Column(db.Text(), index=True, unique=True)
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token_expiration = db.Column(db.DateTime)
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roles = db.relationship("Role", secondary="user_role", viewonly=True)
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Permission = Permission
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_departement = db.relationship(
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"Departement",
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foreign_keys=[Departement.acronym],
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primaryjoin=(dept == Departement.acronym),
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lazy="select",
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passive_deletes="all",
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uselist=False,
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)
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def __init__(self, **kwargs):
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"user_name:str is mandatory"
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self.roles = []
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self.user_roles = []
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# check login:
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if not "user_name" in kwargs:
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raise ValueError("missing user_name argument")
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if invalid_user_name(kwargs["user_name"]):
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raise ValueError(f"invalid user_name: {kwargs['user_name']}")
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kwargs["nom"] = kwargs.get("nom", "") or ""
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kwargs["prenom"] = kwargs.get("prenom", "") or ""
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super().__init__(**kwargs)
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# Ajoute roles:
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if (
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not self.roles
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and self.email
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and self.email == current_app.config["SCODOC_ADMIN_MAIL"]
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):
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# super-admin
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admin_role = Role.query.filter_by(name="SuperAdmin").first()
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assert admin_role
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self.add_role(admin_role, None)
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db.session.commit()
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# current_app.logger.info("creating user with roles={}".format(self.roles))
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def __repr__(self):
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return f"""<User {self.user_name} id={self.id} dept={self.dept}{
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' (inactive)' if not self.active else ''}>"""
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def __str__(self):
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return self.user_name
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def set_password(self, password):
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"Set password"
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current_app.logger.info(f"set_password({self})")
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if password:
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self.password_hash = generate_password_hash(password)
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else:
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self.password_hash = None
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# La création d'un mot de passe efface l'éventuel mot de passe historique
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self.password_scodoc7 = None
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self.passwd_temp = False
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def check_password(self, password: str) -> bool:
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"""Check given password vs current one.
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Returns `True` if the password matched, `False` otherwise.
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"""
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if not self.active: # inactived users can't login
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current_app.logger.warning(
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f"auth: login attempt from inactive account {self}"
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)
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return False
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if self.passwd_temp:
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# Anciens comptes ScoDoc 7 non migrés
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# désactive le compte par sécurité.
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current_app.logger.warning(f"auth: desactivating legacy account {self}")
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self.active = False
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self.passwd_temp = True
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db.session.add(self)
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db.session.commit()
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send_notif_desactivation_user(self)
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return False
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# if CAS activated and forced, allow only super-user and users with cas_allow_scodoc_login
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cas_enabled = ScoDocSiteConfig.is_cas_enabled()
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if cas_enabled and ScoDocSiteConfig.get("cas_force"):
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if (not self.is_administrator()) and not self.cas_allow_scodoc_login:
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return False
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if not self.password_hash: # user without password can't login
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if self.password_scodoc7:
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# Special case: user freshly migrated from ScoDoc7
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return self._migrate_scodoc7_password(password)
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return False
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return check_password_hash(self.password_hash, password)
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def _migrate_scodoc7_password(self, password) -> bool:
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"""After migration, rehash password."""
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if scu.check_scodoc7_password(self.password_scodoc7, password):
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current_app.logger.warning(
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f"auth: migrating legacy ScoDoc7 password for {self}"
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)
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self.set_password(password)
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self.password_scodoc7 = None
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db.session.add(self)
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db.session.commit()
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return True
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return False
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def get_reset_password_token(self, expires_in=600):
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"Un token pour réinitialiser son mot de passe"
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return jwt.encode(
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{"reset_password": self.id, "exp": time() + expires_in},
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current_app.config["SECRET_KEY"],
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algorithm="HS256",
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)
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@staticmethod
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def verify_reset_password_token(token):
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"Vérification du token de ré-initialisation du mot de passe"
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try:
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token = jwt.decode(
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token, current_app.config["SECRET_KEY"], algorithms=["HS256"]
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)
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except jwt.exceptions.ExpiredSignatureError:
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log("verify_reset_password_token: token expired")
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except:
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return None
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try:
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user_id = token["reset_password"]
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# double check en principe inutile car déjà fait dans decode()
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expire = float(token["exp"])
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if time() > expire:
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log(f"verify_reset_password_token: token expired for uid={user_id}")
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return None
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except (TypeError, KeyError):
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return None
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return db.session.get(User, user_id)
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def to_dict(self, include_email=True):
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"""l'utilisateur comme un dict, avec des champs supplémentaires"""
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data = {
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"date_expiration": self.date_expiration.isoformat() + "Z"
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if self.date_expiration
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else None,
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"date_modif_passwd": self.date_modif_passwd.isoformat() + "Z"
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if self.date_modif_passwd
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else None,
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"date_created": self.date_created.isoformat() + "Z"
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if self.date_created
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else None,
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"dept": self.dept,
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"id": self.id,
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"active": self.active,
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"cas_id": self.cas_id,
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"cas_allow_login": self.cas_allow_login,
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"cas_allow_scodoc_login": self.cas_allow_scodoc_login,
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"cas_last_login": self.cas_last_login.isoformat() + "Z"
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if self.cas_last_login
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else None,
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"edt_id": self.edt_id,
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"status_txt": "actif" if self.active else "fermé",
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"last_seen": self.last_seen.isoformat() + "Z" if self.last_seen else None,
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"nom": self.nom or "",
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"prenom": self.prenom or "",
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"roles_string": self.get_roles_string(), # eg "Ens_RT, Ens_Info"
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"user_name": self.user_name,
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# Les champs calculés:
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"nom_fmt": self.get_nom_fmt(),
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"prenom_fmt": self.get_prenom_fmt(),
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"nomprenom": self.get_nomprenom(),
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"prenomnom": self.get_prenomnom(),
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"nomplogin": self.get_nomplogin(),
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"nomcomplet": self.get_nomcomplet(),
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}
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if include_email:
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data["email"] = self.email or ""
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data["email_institutionnel"] = self.email_institutionnel or ""
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return data
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@classmethod
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def convert_dict_fields(cls, args: dict) -> dict:
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"""Convert fields in the given dict. No other side effect.
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args: dict with args in application.
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returns: dict to store in model's db.
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Convert boolean values to bools.
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"""
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args_dict = args
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# Dates
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if "date_expiration" in args:
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date_expiration = args.get("date_expiration")
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if isinstance(date_expiration, str):
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args["date_expiration"] = (
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datetime.datetime.fromisoformat(date_expiration)
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if date_expiration
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else None
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)
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# booléens:
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for field in ("active", "cas_allow_login", "cas_allow_scodoc_login"):
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if field in args:
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args_dict[field] = scu.to_bool(args.get(field))
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# chaines ne devant pas être NULLs
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for field in ("nom", "prenom"):
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if field in args:
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args[field] = args[field] or ""
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return args_dict
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def from_dict(self, data: dict, new_user=False):
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"""Set users' attributes from given dict values.
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- roles_string : roles, encoded like "Ens_RT, Secr_CJ"
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- date_expiration is a dateime object.
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Does not check permissions here.
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"""
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if new_user:
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if "user_name" in data:
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# never change name of existing users
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if invalid_user_name(data["user_name"]):
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raise ValueError(f"invalid user_name: {data['user_name']}")
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self.user_name = data["user_name"]
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if "password" in data:
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self.set_password(data["password"])
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# Roles: roles_string is "Ens_RT, Secr_RT, ..."
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if "roles_string" in data:
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self.user_roles = []
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for r_d in data["roles_string"].split(","):
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if r_d:
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role, dept = UserRole.role_dept_from_string(r_d)
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self.add_role(role, dept)
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super().from_dict(data, excluded={"user_name", "roles_string", "roles"})
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# Set cas_id using regexp if configured:
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exp = ScoDocSiteConfig.get("cas_uid_from_mail_regexp")
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if exp and self.email_institutionnel:
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cas_id = ScoDocSiteConfig.extract_cas_id(self.email_institutionnel)
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if cas_id is not None:
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self.cas_id = cas_id
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def get_token(self, expires_in=3600):
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"Un jeton pour cet user. Stocké en base, non commité."
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now = datetime.utcnow()
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if self.token and self.token_expiration > now + timedelta(seconds=60):
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return self.token
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self.token = base64.b64encode(os.urandom(24)).decode("utf-8")
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self.token_expiration = now + timedelta(seconds=expires_in)
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db.session.add(self)
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return self.token
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def revoke_token(self):
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"Révoque le jeton de cet utilisateur"
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self.token_expiration = datetime.utcnow() - timedelta(seconds=1)
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@staticmethod
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def check_token(token):
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"""Retreive user for given token, check token's validity
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and returns the user object.
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"""
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user = User.query.filter_by(token=token).first()
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if user is None or user.token_expiration < datetime.utcnow():
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return None
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return user
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def get_dept_id(self) -> int:
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"returns user's department id, or None"
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if self.dept:
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return self._departement.id
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return None
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def get_emails(self):
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"List mail adresses to contact this user"
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mails = []
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if self.email:
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mails.append(self.email)
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if self.email_institutionnel:
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mails.append(self.email_institutionnel)
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return mails
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# Permissions management:
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def has_permission(self, perm: int, dept: str = False):
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"""Check if user has permission `perm` in given `dept` (acronym).
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Similar to Zope ScoDoc7 `has_permission``
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Args:
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perm: integer, one of the value defined in Permission class.
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dept: dept id (eg 'RT'), default to current departement.
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"""
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if not self.active:
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return False
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if dept is False:
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dept = g.scodoc_dept
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# les role liés à ce département, et les roles avec dept=None (super-admin)
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roles_in_dept = (
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UserRole.query.filter_by(user_id=self.id)
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.filter((UserRole.dept == dept) | (UserRole.dept == None))
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.all()
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)
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for user_role in roles_in_dept:
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if user_role.role.has_permission(perm):
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return True
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return False
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# Role management
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def add_role(self, role: "Role", dept: str):
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"""Add a role to this user.
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:param role: Role to add.
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"""
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if not isinstance(role, Role):
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raise ScoValueError("add_role: rôle invalide")
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user_role = UserRole(user=self, role=role, dept=dept)
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db.session.add(user_role)
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self.user_roles.append(user_role)
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def add_roles(self, roles: "list[Role]", dept: str):
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"""Add roles to this user.
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:param roles: Roles to add.
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"""
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for role in roles:
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self.add_role(role, dept)
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def set_roles(self, roles, dept):
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"set roles in the given dept"
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self.user_roles = [
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UserRole(user=self, role=r, dept=dept) for r in roles if isinstance(r, Role)
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]
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def get_roles(self):
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"iterator on my roles"
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for role in self.roles:
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yield role
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def get_roles_string(self):
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"""string repr. of user's roles (with depts)
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e.g. "Ens_RT, Ens_Info, Secr_CJ"
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"""
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return ", ".join(
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f"{r.role.name or ''}_{r.dept or ''}"
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for r in self.user_roles
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if r is not None
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)
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def get_depts_with_permission(self, permission: int) -> list[str]:
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"""Liste des acronymes de département dans lesquels cet utilisateur
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possède la permission indiquée.
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L'"acronyme" None signifie "tous les départements".
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Si plusieurs permissions (plusieurs bits) sont indiquées, c'est un "ou":
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les départements dans lesquels l'utilisateur a l'une des permissions.
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"""
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return [
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user_role.dept
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for user_role in UserRole.query.filter_by(user=self)
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.join(Role)
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.filter(Role.permissions.op("&")(permission) != 0)
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]
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def is_administrator(self):
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"True if i'm an active SuperAdmin"
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return self.active and self.has_permission(Permission.ScoSuperAdmin, dept=None)
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# Some useful strings:
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def get_nomplogin(self):
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"""nomplogin est le nom en majuscules suivi du prénom et du login
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e.g. Dupont Pierre (dupont)
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"""
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nom = scu.format_nom(self.nom) if self.nom else self.user_name.upper()
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return f"{nom} {scu.format_prenom(self.prenom)} ({self.user_name})"
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@staticmethod
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def get_user_id_from_nomplogin(nomplogin: str) -> Optional[int]:
|
|
"""Returns id from the string "Dupont Pierre (dupont)"
|
|
or None if user does not exist
|
|
"""
|
|
match = re.match(r".*\((.*)\)", nomplogin.strip())
|
|
if match:
|
|
user_name = match.group(1)
|
|
u = User.query.filter_by(user_name=user_name).first()
|
|
if u:
|
|
return u.id
|
|
return None
|
|
|
|
def get_nom_fmt(self):
|
|
"""Nom formaté: "Martin" """
|
|
if self.nom:
|
|
return scu.format_nom(self.nom, uppercase=False)
|
|
else:
|
|
return self.user_name
|
|
|
|
def get_prenom_fmt(self):
|
|
"""Prénom formaté (minuscule capitalisées)"""
|
|
return scu.format_prenom(self.prenom)
|
|
|
|
def get_nomprenom(self):
|
|
"""Nom capitalisé suivi de l'initiale du prénom:
|
|
Viennet E.
|
|
"""
|
|
prenom_abbrv = scu.abbrev_prenom(scu.format_prenom(self.prenom))
|
|
return (self.get_nom_fmt() + " " + prenom_abbrv).strip()
|
|
|
|
def get_prenomnom(self):
|
|
"""L'initiale du prénom suivie du nom: "J.-C. Dupont" """
|
|
prenom_abbrv = scu.abbrev_prenom(scu.format_prenom(self.prenom))
|
|
return (prenom_abbrv + " " + self.get_nom_fmt()).strip()
|
|
|
|
def get_nomcomplet(self):
|
|
"Prénom et nom complets"
|
|
return scu.format_prenom(self.prenom) + " " + self.get_nom_fmt()
|
|
|
|
# nomnoacc était le nom en minuscules sans accents (inutile)
|
|
|
|
|
|
class AnonymousUser(AnonymousUserMixin):
|
|
"Notre utilisateur anonyme"
|
|
|
|
def has_permission(self, perm, dept=None):
|
|
return False
|
|
|
|
def is_administrator(self):
|
|
return False
|
|
|
|
|
|
login.anonymous_user = AnonymousUser
|
|
|
|
|
|
class Role(db.Model):
|
|
"""Roles for ScoDoc"""
|
|
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
name = db.Column(db.String(64), unique=True, nullable=False, index=True)
|
|
default = db.Column(db.Boolean, default=False, index=True)
|
|
permissions = db.Column(db.BigInteger) # 64 bits
|
|
users = db.relationship("User", secondary="user_role", viewonly=True)
|
|
|
|
def __init__(self, **kwargs):
|
|
super(Role, self).__init__(**kwargs)
|
|
if self.permissions is None:
|
|
self.permissions = 0
|
|
|
|
def __repr__(self):
|
|
return "<Role {} perm={:0{w}b}>".format(
|
|
self.name,
|
|
self.permissions & ((1 << Permission.NBITS) - 1),
|
|
w=Permission.NBITS,
|
|
)
|
|
|
|
def __str__(self):
|
|
return f"{self.name}: perm={', '.join(Permission.permissions_names(self.permissions))}"
|
|
|
|
def to_dict(self) -> dict:
|
|
"As dict. Convert permissions to names."
|
|
return {
|
|
"id": self.id,
|
|
"role_name": self.name, # pour être cohérent avec partion_name, etc.
|
|
"permissions": Permission.permissions_names(self.permissions),
|
|
}
|
|
|
|
def add_permission(self, perm: int):
|
|
"Add permission to role"
|
|
self.permissions |= perm
|
|
|
|
def remove_permission(self, perm: int):
|
|
"Remove permission from role"
|
|
self.permissions = self.permissions & ~perm
|
|
|
|
def reset_permissions(self):
|
|
"Remove all permissions from role"
|
|
self.permissions = 0
|
|
|
|
def get_named_permissions(self) -> list[str]:
|
|
"List of the names of the permissions associated to this rôle"
|
|
return Permission.permissions_names(self.permissions)
|
|
|
|
def set_named_permissions(self, permission_names: list[str]):
|
|
"""Set permissions, given as a list of permissions names.
|
|
Raises ScoValueError if invalid permission."""
|
|
self.permissions = 0
|
|
for permission_name in permission_names:
|
|
permission = Permission.get_by_name(permission_name)
|
|
if permission is None:
|
|
raise ScoValueError("set_named_permissions: invalid permission name")
|
|
self.permissions |= permission
|
|
|
|
def has_permission(self, perm: int) -> bool:
|
|
"True if role as this permission"
|
|
return self.permissions & perm == perm
|
|
|
|
@staticmethod
|
|
def reset_standard_roles_permissions(reset_permissions=True):
|
|
"""Create default roles if missing, then, if reset_permissions,
|
|
reset their permissions to default values.
|
|
"""
|
|
default_role = "Observateur"
|
|
for role_name, permissions in SCO_ROLES_DEFAULTS.items():
|
|
role = Role.query.filter_by(name=role_name).first()
|
|
if role is None:
|
|
role = Role(name=role_name)
|
|
role.default = role.name == default_role
|
|
db.session.add(role)
|
|
if reset_permissions:
|
|
role.reset_permissions()
|
|
for perm in permissions:
|
|
role.add_permission(perm)
|
|
db.session.add(role)
|
|
|
|
db.session.commit()
|
|
|
|
@staticmethod
|
|
def ensure_standard_roles():
|
|
"""Create default roles if missing"""
|
|
Role.reset_standard_roles_permissions(reset_permissions=False)
|
|
|
|
@staticmethod
|
|
def get_named_role(name):
|
|
"""Returns existing role with given name, or None."""
|
|
return Role.query.filter_by(name=name).first()
|
|
|
|
|
|
class UserRole(db.Model):
|
|
"""Associate user to role, in a dept.
|
|
If dept is None, the role applies to all departments (eg super admin).
|
|
"""
|
|
|
|
id = db.Column(db.Integer, primary_key=True)
|
|
user_id = db.Column(db.Integer, db.ForeignKey("user.id"))
|
|
role_id = db.Column(db.Integer, db.ForeignKey("role.id"))
|
|
dept = db.Column(db.String(64)) # dept acronym ou NULL
|
|
user = db.relationship(
|
|
User, backref=db.backref("user_roles", cascade="all, delete-orphan")
|
|
)
|
|
role = db.relationship(
|
|
Role, backref=db.backref("user_roles", cascade="all, delete-orphan")
|
|
)
|
|
|
|
def __repr__(self):
|
|
return f"<UserRole u={self.user} r={self.role} dept={self.dept}>"
|
|
|
|
@staticmethod
|
|
def role_dept_from_string(role_dept: str):
|
|
"""Return tuple (role, dept) from the string
|
|
role_dept, of the forme "Role_Dept".
|
|
role is a Role instance, dept is a string, or None.
|
|
"""
|
|
fields = role_dept.strip().split("_", 1)
|
|
# maxsplit=1, le dept peut contenir un "_"
|
|
if len(fields) != 2:
|
|
current_app.logger.warning(
|
|
f"auth: role_dept_from_string: Invalid role_dept '{role_dept}'"
|
|
)
|
|
raise ScoValueError("Invalid role_dept")
|
|
role_name, dept = fields
|
|
dept = dept.strip() if dept else ""
|
|
if dept == "":
|
|
dept = None
|
|
|
|
role = Role.query.filter_by(name=role_name).first()
|
|
if role is None:
|
|
raise ScoValueError(f"role {role_name} does not exists")
|
|
return (role, dept)
|
|
|
|
|
|
def get_super_admin():
|
|
"""L'utilisateur admin (ou le premier, s'il y en a plusieurs).
|
|
Utilisé par les tests unitaires et le script de migration.
|
|
"""
|
|
admin_role = Role.query.filter_by(name="SuperAdmin").first()
|
|
assert admin_role
|
|
admin_user = (
|
|
User.query.join(UserRole)
|
|
.filter((UserRole.user_id == User.id) & (UserRole.role_id == admin_role.id))
|
|
.first()
|
|
)
|
|
assert admin_user
|
|
return admin_user
|
|
|
|
|
|
def send_notif_desactivation_user(user: User):
|
|
"""Envoi un message mail de notification à l'admin et à l'adresse du compte désactivé"""
|
|
recipients = user.get_emails() + [current_app.config.get("SCODOC_ADMIN_MAIL")]
|
|
txt = [
|
|
f"""Le compte ScoDoc '{user.user_name}' associé à votre adresse <{user.email}>""",
|
|
"""a été désactivé par le système car son mot de passe n'était pas valide.\n""",
|
|
"""Contactez votre responsable pour le ré-activer.\n""",
|
|
"""Ceci est un message automatique, ne pas répondre.""",
|
|
]
|
|
txt = "\n".join(txt)
|
|
email.send_email(
|
|
f"ScoDoc: désactivation automatique du compte {user.user_name}",
|
|
email.get_from_addr(),
|
|
recipients,
|
|
txt,
|
|
)
|
|
return txt
|