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pds-2021-g2-nest/code/backend/nest_backend/gestione.py
Lorenzo Balugani a4268df8f5 Login + User creation
Add API calls for login and user creation.
2021-04-22 18:46:41 +02:00

63 lines
1.8 KiB
Python

"""
A utilities Python Module.
--------------------------
Gestione adds many fancy thingamajigs to the flask application, such as a login system and such.
"""
from .database import *
import bcrypt
import functools
from flask_jwt_extended import get_jwt_identity
def authenticate(username, password):
"""
Authentication method. It checks if the combination of username+password is a valid match. If not, it returns None.
:param username: the user's email
:param password: the user's password
:return: if the credentials are correct, it returns the user. Else, it returns None.
"""
user = User.query.filter_by(email=username).first()
try:
if bcrypt.checkpw(bytes(password, encoding="utf-8"), user.password):
return user
except AttributeError:
# Se non esiste l'Utente
return None
def identity(payload):
"""
Authentication verification method. It checks if the user is in fact registered on the server.
It is required by Flask-JWT, and shouldnt be used alone.
:param payload: the reqest payload.
:return: an User or None. It depends whether the user is actually registered on the platform.
"""
user_id = payload['identity']
user = User.query.filter_by(id=user_id).first()
if user:
return user.id
return None
def gen_password(password):
"""
It generates an hashed password.
:param password: the password that needs to be hashed.
:return: the password's hash.
"""
return bcrypt.hashpw(bytes(password, "utf-8"), bcrypt.gensalt())
def find_user(email):
return User.query.filter_by(email=email).first()
def admin_or_403(f):
@functools.wraps(f)
def func(*args, **kwargs):
current_user = get_jwt_identity()
return f(*args, **kwargs)
return func