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"""User authorisation endpoints."""
import traceback
from functools import partial
from typing import Any, Tuple, Optional
import sqlite3
from flask import request, jsonify, Response, Blueprint, current_app
from gn3.auth import db
from gn3.auth.dictify import dictify
from gn3.auth.db_utils import with_db_connection
from ..groups.models import user_group as _user_group
from ..errors import NotFoundError, UserRegistrationError
from ..resources.models import user_resources as _user_resources
from ..roles.models import assign_default_roles, user_roles as _user_roles
from ...authentication.oauth2.resource_server import require_oauth
from ...authentication.users import User, save_user, set_user_password
from ...authentication.oauth2.models.oauth2token import token_by_access_token
users = Blueprint("users", __name__)
@users.route("/", methods=["GET"])
@require_oauth("profile")
def user_details() -> Response:
"""Return user's details."""
with require_oauth.acquire("profile") as the_token:
user = the_token.user
user_dets = {
"user_id": user.user_id, "email": user.email, "name": user.name,
"group": False
}
with db.connection(current_app.config["AUTH_DB"]) as conn, db.cursor(conn) as cursor:
the_group = _user_group(cursor, user).maybe(# type: ignore[misc]
False, lambda grp: grp)# type: ignore[arg-type]
return jsonify({
**user_dets,
"group": dictify(the_group) if the_group else False
})
@users.route("/roles", methods=["GET"])
@require_oauth("role")
def user_roles() -> Response:
"""Return the non-resource roles assigned to the user."""
with require_oauth.acquire("role") as token:
with db.connection(current_app.config["AUTH_DB"]) as conn:
return jsonify(tuple(
dictify(role) for role in
_user_roles(conn, token.user).maybe(# type: ignore[misc]
tuple(), lambda roles: roles)))
def __email_valid__(email: str) -> Tuple[bool, Optional[str]]:
"""Validate the email address."""
if email == "":
return False, "Empty email address"
## Check that the address is a valid email address
## Review use of `email-validator` or `pyIsEmail` python packages for
## validating the emails, if it turns out this is important.
## Success
return True, None
def __password_valid__(password, confirm_password) -> Tuple[bool, Optional[str]]:
if password == "" or confirm_password == "":
return False, "Empty password value"
if password != confirm_password:
return False, "Mismatched password values"
return True, None
def __user_name_valid__(name: str) -> Tuple[bool, Optional[str]]:
if name == "":
return False, "User's name not provided."
return True, None
def __assert_not_logged_in__(conn: db.DbConnection):
bearer = request.headers.get('Authorization')
if bearer:
token = token_by_access_token(conn, bearer.split(None)[1]).maybe(# type: ignore[misc]
False, lambda tok: tok)
if token:
raise UserRegistrationError(
"Cannot register user while authenticated")
@users.route("/register", methods=["POST"])
def register_user() -> Response:
"""Register a user."""
with db.connection(current_app.config["AUTH_DB"]) as conn:
__assert_not_logged_in__(conn)
form = request.form
email = form.get("email", "").strip()
password = form.get("password", "").strip()
user_name = form.get("user_name", "").strip()
errors = tuple(
error for valid,error in
[__email_valid__(email),
__password_valid__(
password, form.get("confirm_password", "").strip()),
__user_name_valid__(user_name)]
if not valid)
if len(errors) > 0:
raise UserRegistrationError(*errors)
try:
with db.cursor(conn) as cursor:
user, _hashed_password = set_user_password(
cursor, save_user(cursor, email, user_name), password)
assign_default_roles(cursor, user)
return jsonify(
{
"user_id": user.user_id,
"email": user.email,
"name": user.name
})
except sqlite3.IntegrityError as sq3ie:
current_app.logger.debug(traceback.format_exc())
raise UserRegistrationError(
"A user with that email already exists") from sq3ie
raise Exception(
"unknown_error", "The system experienced an unexpected error.")
@users.route("/group", methods=["GET"])
@require_oauth("profile group")
def user_group() -> Response:
"""Retrieve the group in which the user is a member."""
with require_oauth.acquire("profile group") as the_token:
db_uri = current_app.config["AUTH_DB"]
with db.connection(db_uri) as conn, db.cursor(conn) as cursor:
group = _user_group(cursor, the_token.user).maybe(# type: ignore[misc]
False, lambda grp: grp)# type: ignore[arg-type]
if group:
return jsonify(dictify(group))
raise NotFoundError("User is not a member of any group.")
@users.route("/resources", methods=["GET"])
@require_oauth("profile resource")
def user_resources() -> Response:
"""Retrieve the resources a user has access to."""
with require_oauth.acquire("profile resource") as the_token:
db_uri = current_app.config["AUTH_DB"]
with db.connection(db_uri) as conn:
return jsonify([
dictify(resource) for resource in
_user_resources(conn, the_token.user)])
@users.route("group/join-request", methods=["GET"])
@require_oauth("profile group")
def user_join_request_exists():
"""Check whether a user has an active group join request."""
def __request_exists__(conn: db.DbConnection, user: User) -> dict[str, Any]:
with db.cursor(conn) as cursor:
cursor.execute(
"SELECT * FROM group_join_requests WHERE requester_id=? AND "
"status = 'PENDING'",
(str(user.user_id),))
res = cursor.fetchone()
if res:
return {
"request_id": res["request_id"],
"exists": True
}
return{
"status": "Not found",
"exists": False
}
with require_oauth.acquire("profile group") as the_token:
return jsonify(with_db_connection(partial(
__request_exists__, user=the_token.user)))
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