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import base64
import json
import os
from cryptography.fernet import Fernet
from pathlib import Path
from django.conf import settings
from django.contrib.auth.models import User
from django.db import models
from troggle.core.models.troggle import DataIssue, Person
"""This imports the registered troggle users, who are nearly-all, but not quite, Persons.
exceptions are "expo" and "expoadmin" which are created by the databaseReset.py import program.
This can import unencrypted email addresses but never exports them.
Passwords are only ever stored as hashes using the standard Django functions.
"""
todo = """
- Make all this work with New people who have never been on expo before
"""
USERS_FILE = "users.json"
ENCRYPTED_DIR = "encrypted"
def register_user(u, email, password=None, pwhash=None, fullname=None):
"""Create User and we may not have a Person to tie it to if it is a future caver.
Do not use the lastname field, put the whole free text identification into firstname
as this saves hassle and works with Wookey too
"""
try:
if existing_user := User.objects.filter(username=u): # WALRUS
print(f" - deleting existing user '{existing_user[0]}' before importing")
existing_user[0].delete()
user = User.objects.create_user(u, email, first_name=fullname)
if pwhash:
user.password = pwhash
elif password:
user.set_password(password) # function creates hash and stores hash
print(f" # hashing provided clear-text password {password} to make pwhash for user {u}")
else:
# user.set_password(None) # use Django special setting for invalid password, but then FAILS to send password reset email
user.set_password("secret") # Why is the Django logic broken. Hmph.
print(f" # setting INVALID password for user {u}, must be reset by password_reset")
user.is_staff = False
user.is_superuser = False
user.save()
print(f" - receated and reset user '{user}'")
except Exception as e:
print(f"Exception <{e}>\n{len(User.objects.all())} users now in db:\n{User.objects.all()}")
raise
expoers = Person.objects.filter(slug=u)
if len(expoers) == 1:
person = expoers[0]
person.user = user
person.save()
return user
def get_encryptor():
key = settings.LONGTERM_SECRET_KEY # Django generated
k = base64.urlsafe_b64encode(key.encode("utf8")[:32]) # make Fernet compatible
f = Fernet(k)
return f
def load_users():
"""These are the previously registered users of the troggle system.
"""
PARSER_USERS = "_users"
DataIssue.objects.filter(parser=PARSER_USERS).delete()
f = get_encryptor()
jsonfile = settings.EXPOWEB / ENCRYPTED_DIR / USERS_FILE
jsonurl = "/" + str(Path(ENCRYPTED_DIR) / USERS_FILE)
if not (jsonfile.is_file()):
message = f" ! Users json file does not exist: '{jsonfile}'"
DataIssue.objects.create(parser=PARSER_USERS, message=message)
print(message)
return None
with open(jsonfile, 'r', encoding='utf-8') as json_f:
message = ""
try:
registered_users_dict = json.load(json_f)
except FileNotFoundError:
message = f"File {jsonfile} not found!"
except json.JSONDecodeError:
message = f"Invalid JSON format! - JSONDecodeError for {jsonfile}"
except Exception as e:
message = f"! Troggle USERs. Failed to load {jsonfile} JSON file. Exception <{e}>"
if message:
print(message)
DataIssue.objects.update_or_create(parser=PARSER_USERS, message=message, url=jsonurl)
return None
users_list = registered_users_dict["registered_users"]
print(f" - {len(users_list)} users read from JSON")
for userdata in users_list:
if not userdata["username"]:
message = f"! user: BAD username for {userdata} in {jsonfile}"
print(message)
DataIssue.objects.update_or_create(parser=PARSER_USERS, message=message, url=jsonurl)
continue
else:
if userdata["username"] in [ "expo", "expoadmin" ]:
continue
if "encrypted" not in userdata:
userdata["encrypted"] = True
try:
u = userdata["username"]
email = userdata["email"]
if userdata["encrypted"]:
email = f.decrypt(email).decode()
print(f" - user: '{u} <{email}>' ")
except Exception as e:
print(f"Exception <{e}>\n")
formatted_json = json.dumps(userdata, indent=4)
print(formatted_json)
raise
return None
if "pwhash" in userdata:
pwhash = userdata["pwhash"]
new_user = register_user(u, email, pwhash=pwhash)
else:
new_user = register_user(u, email)
# save_users() no need on initial parsing
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