forked from ScoDoc/ScoDoc
339 lines
11 KiB
Python
339 lines
11 KiB
Python
# -*- mode: python -*-
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# -*- coding: utf-8 -*-
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##############################################################################
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#
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# Gestion scolarite IUT
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#
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# Copyright (c) 1999 - 2023 Emmanuel Viennet. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program 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 General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Emmanuel Viennet emmanuel.viennet@viennet.net
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#
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##############################################################################
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"""Import d'utilisateurs via fichier Excel
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"""
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import random
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import time
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from flask import url_for
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from flask_login import current_user
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from app import db
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from app import email
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from app.auth.models import User, UserRole
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import app.scodoc.sco_utils as scu
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from app import log
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from app.scodoc.sco_exceptions import AccessDenied, ScoValueError
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from app.scodoc import sco_excel
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from app.scodoc import sco_users
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TITLES = (
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"user_name",
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"nom",
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"prenom",
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"email",
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"roles",
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"dept",
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"cas_id",
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"cas_allow_login",
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"cas_allow_scodoc_login",
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)
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COMMENTS = (
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"""user_name:
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L'identifiant (login).
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Composé de lettres (minuscules ou majuscules), de chiffres ou du caractère _
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""",
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"""nom:
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Maximum 64 caractères.""",
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"""prenom:
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Maximum 64 caractères.""",
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"""email:
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Maximum 120 caractères.""",
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"""roles:
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un plusieurs rôles séparés par ','
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chaque rôle est fait de 2 composantes séparées par _:
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1. Le rôle (Ens, Secr ou Admin)
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2. Le département (en majuscule)
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Exemple: "Ens_RT,Admin_INFO".
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""",
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"""dept:
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Le département d'appartenance de l'utilisateur. Laisser vide si l'utilisateur
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intervient dans plusieurs départements.
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""",
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"""cas_id:
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identifiant de l'utilisateur sur CAS (optionnel).
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""",
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"""cas_allow_login:
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autorise la connexion via CAS (optionnel, faux par défaut)
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""",
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"""cas_allow_scodoc_login
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autorise connexion via ScoDoc même si CAS obligatoire (optionnel, faux par défaut)
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""",
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)
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def generate_excel_sample():
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"""generates an excel document suitable to import users"""
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style = sco_excel.excel_make_style(bold=True)
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titles = TITLES
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titles_styles = [style] * len(titles)
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return sco_excel.excel_simple_table(
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titles=titles,
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titles_styles=titles_styles,
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sheet_name="Utilisateurs ScoDoc",
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comments=COMMENTS,
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)
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def read_users_excel_file(datafile, titles=TITLES) -> list[dict]:
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"""Lit le fichier excel et renvoie liste de dict
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titles : titres (ids) des colonnes attendues
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"""
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# Read the data from the stream
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exceldata = datafile.read()
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if not exceldata:
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raise ScoValueError("Ficher excel vide ou invalide")
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_, data = sco_excel.excel_bytes_to_list(exceldata)
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if not data:
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raise ScoValueError("Le fichier xlsx attendu semble vide !")
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# 1- --- check title line
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xls_titles = [scu.stripquotes(s).lower() for s in data[0]]
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# log("excel: fs='%s'\ndata=%s" % (str(fs), str(data)))
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# check cols
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cols = {}.fromkeys(titles)
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unknown = []
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for tit in xls_titles:
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if tit not in cols:
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unknown.append(tit)
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else:
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del cols[tit]
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if cols or unknown:
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raise ScoValueError(
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f"""colonnes incorrectes (on attend {len(titles)}, et non {len(xls_titles)})
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<br>
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(colonnes manquantes: {list(cols.keys())}, colonnes invalides: {unknown})
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"""
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)
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# ok, same titles... : build the list of dictionaries
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users = []
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for line in data[1:]:
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d = {}
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for i, field in enumerate(xls_titles):
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d[field] = line[i]
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users.append(d)
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return users
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def import_excel_file(datafile, force="") -> tuple[bool, list[str], int]:
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"""
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Import scodoc users from Excel file.
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This method:
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* checks that the current_user has the ability to do so (at the moment only a SuperAdmin).
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He may thereoff import users with any well formed role into any department (or all)
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* Once the check is done ans successfull, build the list of users (does not check the data)
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* call :func:`import_users` to actually do the job
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:param datafile: the stream to be imported
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:return: same as import users
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"""
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if not current_user.is_administrator():
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raise AccessDenied(f"invalid user ({current_user}) must be SuperAdmin")
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log("sco_import_users.import_excel_file by {current_user}")
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users = read_users_excel_file(datafile)
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return import_users(users=users, force=force)
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def import_users(users, force="") -> tuple[bool, list[str], int]:
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"""
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Import users from a list of users_descriptors.
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descriptors are dictionaries hosting users's data.
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The operation is atomic (all the users are imported or none)
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:param users: list of descriptors to be imported
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:return: a tuple that describe the result of the import:
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* ok: import ok or aborted
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* messages: the list of messages
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* the # of users created
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Implémentation:
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Pour chaque utilisateur à créer:
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* vérifier données (y compris que le même nom d'utilisateur n'est pas utilisé
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plusieurs fois)
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* générer mot de passe aléatoire
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* créer utilisateur et mettre le mot de passe
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* envoyer mot de passe par mail
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Les utilisateurs à créer sont stockés dans un dictionnaire.
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L'ajout effectif ne se fait qu'en fin de fonction si aucune erreur n'a été détectée.
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"""
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created = {} # uid créés
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if len(users) == 0:
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import_ok = False
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msg_list = ["Feuille vide ou illisible"]
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else:
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msg_list = []
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line = 1 # start from excel line #2
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import_ok = True
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def append_msg(msg):
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msg_list.append(f"Ligne {line} : {msg}")
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try:
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for u in users:
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line = line + 1
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user_ok, msg = sco_users.check_modif_user(
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0,
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enforce_optionals=not force,
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user_name=u["user_name"],
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nom=u["nom"],
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prenom=u["prenom"],
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email=u["email"],
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roles=[r for r in u["roles"].split(",") if r],
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dept=u["dept"],
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cas_id=u["cas_id"],
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)
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if not user_ok:
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append_msg(f"""identifiant '{u["user_name"]}' {msg}""")
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u["passwd"] = generate_password()
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#
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# check identifiant
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if u["user_name"] in created.keys():
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user_ok = False
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append_msg(
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f"""l'utilisateur '{u["user_name"]}' a déjà été décrit ligne {
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created[u["user_name"]]["line"]}"""
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)
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# check roles / ignore whitespaces around roles / build roles_string
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# roles_string (expected by User) appears as column 'roles' in excel file
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roles_list = []
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for role in u["roles"].split(","):
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try:
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role = role.strip()
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if role:
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_, _ = UserRole.role_dept_from_string(role)
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roles_list.append(role)
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except ScoValueError as value_error:
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user_ok = False
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append_msg(f"role {role} : {value_error}")
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u["roles_string"] = ",".join(roles_list)
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if user_ok:
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u["line"] = line
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created[u["user_name"]] = u
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else:
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import_ok = False
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except ScoValueError as value_error:
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log(f"import_users: exception: abort create {str(created.keys())}")
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raise ScoValueError(msg) from value_error
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if import_ok:
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for u in created.values():
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# Création de l'utilisateur (via SQLAlchemy)
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user = User()
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user.from_dict(u, new_user=True)
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db.session.add(user)
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db.session.commit()
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mail_password(u)
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else:
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created = {} # reset # of created users to 0
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return import_ok, msg_list, len(created)
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# --------- Génération du mot de passe initial -----------
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# Adapté de http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/440564
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# Alphabet tres simple pour des mots de passe simples...
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ALPHABET = r"""ABCDEFGHIJKLMNPQRSTUVWXYZ123456789123456789AEIOU"""
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PASSLEN = 8
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RNG = random.Random(time.time())
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def generate_password():
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"""This function creates a pseudo random number generator object, seeded with
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the cryptographic hash of the passString. The contents of the character set
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is then shuffled and a selection of passLength words is made from this list.
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This selection is returned as the generated password."""
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l = list(ALPHABET) # make this mutable so that we can shuffle the characters
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RNG.shuffle(l) # shuffle the character set
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# pick up only a subset from the available characters:
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return "".join(RNG.sample(l, PASSLEN))
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def mail_password(user: dict, reset=False) -> None:
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"Send password by email"
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if not user["email"]:
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return
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user["url"] = url_for("scodoc.index", _external=True)
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txt = (
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"""
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Bonjour %(prenom)s %(nom)s,
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"""
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% user
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)
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if reset:
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txt += (
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"""
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votre mot de passe ScoDoc a été ré-initialisé.
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Le nouveau mot de passe est: %(passwd)s
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Votre nom d'utilisateur est %(user_name)s
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Vous devrez changer ce mot de passe lors de votre première connexion
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sur %(url)s
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"""
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% user
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)
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else:
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txt += (
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"""
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vous avez été déclaré comme utilisateur du logiciel de gestion de scolarité ScoDoc.
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Votre nom d'utilisateur est %(user_name)s
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Votre mot de passe est: %(passwd)s
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Le logiciel est accessible sur: %(url)s
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Vous êtes invité à changer ce mot de passe au plus vite (cliquez sur votre nom en haut à gauche de la page d'accueil).
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"""
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% user
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)
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txt += (
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"""
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_______
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ScoDoc est un logiciel libre développé par Emmanuel Viennet et l'association ScoDoc.
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Pour plus d'informations sur ce logiciel, voir %s
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"""
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% scu.SCO_WEBSITE
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)
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if reset:
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subject = "Mot de passe ScoDoc"
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else:
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subject = "Votre accès ScoDoc"
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email.send_email(subject, email.get_from_addr(), [user["email"]], txt)
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