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from flask import Blueprint, request, session, render_template, redirect, url_for, abort
from werkzeug.security import generate_password_hash, check_password_hash
from .users import Users
from .exceptions import UsernameTakenError
from .config import config
bp = Blueprint("auth", __name__, url_prefix="/")
users = Users(config.get("general", "db_path"))
def show_error(action, message):
return render_template(
"auth.html",
action=action,
error=message,
)
@bp.route("/<action>", methods=["GET", "POST"])
def auth(action):
if action not in ["login", "register"]:
abort(404)
if request.method == "GET":
# display login/register page
return render_template("auth.html", action=action)
# validate login information
username = request.form.get("username")
password = request.form.get("password")
if not all([username, password]):
return show_error(action, "Please fill in both the username and password.")
if action == "login":
user = users.find(username)
if user is None:
return show_error("login", f"User {username} does not exist.")
if not check_password_hash(user["password"], password):
return show_error("login", "Incorrect password. Sorry.")
elif action == "register":
if not config.getboolean("general", "accept_new_users"):
return show_error("register", "Sorry, but user registrations are closed.")
try:
users.register(username, generate_password_hash(password), "en-US")
except UsernameTakenError as e:
return show_error("register", e.message)
else:
abort(400)
# give access
session.clear()
session["username"] = username
return redirect(url_for("admin.index"))
@bp.route("/logout")
def logout():
session.pop("username", None)
return redirect(url_for("auth.auth", action="login"))
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