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109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
"""
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A utilities Python Module.
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--------------------------
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Gestione adds many fancy thingamajigs to the flask application, such as a login system and such.
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"""
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from .database import *
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import bcrypt
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import functools
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from flask_jwt_extended import get_jwt_identity
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from flask import request, jsonify
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def authenticate(username, password):
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"""
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Authentication method. It checks if the combination of username+password is a valid match. If not, it returns None.
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:param username: the user's email
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:param password: the user's password
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:return: if the credentials are correct, it returns the user. Else, it returns None.
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"""
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user = User.query.filter_by(email=username).first()
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try:
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if bcrypt.checkpw(bytes(password, encoding="utf-8"), user.password):
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return user
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except AttributeError:
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# Se non esiste l'Utente
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return None
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def identity(payload):
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"""
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Authentication verification method. It checks if the user is in fact registered on the server.
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It is required by Flask-JWT, and shouldnt be used alone.
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:param payload: the reqest payload.
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:return: an User or None. It depends whether the user is actually registered on the platform.
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"""
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user_id = payload['identity']
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user = User.query.filter_by(id=user_id).first()
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if user:
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return user.id
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return None
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def gen_password(password):
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"""
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It generates an hashed password.
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:param password: the password that needs to be hashed.
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:return: the password's hash.
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"""
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return bcrypt.hashpw(bytes(password, "utf-8"), bcrypt.gensalt())
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def find_user(email):
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return User.query.filter_by(email=email).first()
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def admin_or_403(f):
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@functools.wraps(f)
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def func(*args, **kwargs):
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current_user = get_jwt_identity()
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return f(*args, **kwargs)
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return func
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def repository_auth(f):
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@functools.wraps(f)
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def func(*args, **kwargs):
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user = find_user(get_jwt_identity())
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repository_id = kwargs["rid"]
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if not repository_id:
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return json_error("Missing one or more parameters."), 400
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repository = Repository.query.filter_by(id=repository_id).first()
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if not repository:
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return json_error("Cant't find the repository."), 404
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if repository.owner_id != user.email and user.email not in [a.email for a in
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repository.authorizations] and not user.isAdmin:
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return json_error("Stop right there, criminal scum! Nobody accesses protected data under MY watch!"), 403
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return f(*args, **kwargs)
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return func
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def json_error(msg):
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"""
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Returns an error in json format
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:param msg: the error message.
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:return: a json formatted string.
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"""
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return jsonify({"result": "failure", 'msg': msg})
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def json_success(data):
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"""
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An happy little function. Its happy because the operation was successful.
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:param data: the thing you want to be returned
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:return: a json formatted string
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"""
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return jsonify({"result": "success", "data": data})
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def error_handler(e):
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try:
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print(f"{e.description} - {e.code}")
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return json_error(f"{e.description} - {e.code}"), 500
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except Exception:
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print(e)
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return json_error(f"{e.__repr__()}"), 500
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