309 lines
11 KiB
Python
309 lines
11 KiB
Python
from typing import Dict
|
|
from urllib.parse import urlparse
|
|
|
|
from flask import request, render_template, redirect, flash
|
|
from flask_login import current_user
|
|
|
|
from app.config import EMAIL_DOMAIN
|
|
from app.extensions import db
|
|
from app.jose_utils import make_id_token
|
|
from app.log import LOG
|
|
from app.models import (
|
|
Client,
|
|
AuthorizationCode,
|
|
ClientUser,
|
|
GenEmail,
|
|
RedirectUri,
|
|
OauthToken,
|
|
DeletedAlias,
|
|
)
|
|
from app.oauth.base import oauth_bp
|
|
from app.oauth_models import (
|
|
get_response_types,
|
|
ResponseType,
|
|
Scope,
|
|
SUPPORTED_OPENID_FLOWS,
|
|
SUPPORTED_OPENID_FLOWS_STR,
|
|
response_types_to_str,
|
|
)
|
|
from app.utils import random_string, encode_url, convert_to_id, random_word
|
|
|
|
|
|
@oauth_bp.route("/authorize", methods=["GET", "POST"])
|
|
def authorize():
|
|
"""
|
|
Redirected from client when user clicks on "Login with Server".
|
|
This is a GET request with the following field in url
|
|
- client_id
|
|
- (optional) state
|
|
- response_type: must be code
|
|
"""
|
|
oauth_client_id = request.args.get("client_id")
|
|
state = request.args.get("state")
|
|
scope = request.args.get("scope")
|
|
redirect_uri = request.args.get("redirect_uri")
|
|
response_mode = request.args.get("response_mode")
|
|
nonce = request.args.get("nonce")
|
|
|
|
try:
|
|
response_types: [ResponseType] = get_response_types(request)
|
|
except ValueError:
|
|
return (
|
|
"response_type must be code, token, id_token or certain combination of these."
|
|
" Please see /.well-known/openid-configuration to see what response_type are supported ",
|
|
400,
|
|
)
|
|
|
|
if set(response_types) not in SUPPORTED_OPENID_FLOWS:
|
|
return (
|
|
f"SimpleLogin only support the following OIDC flows: {SUPPORTED_OPENID_FLOWS_STR}",
|
|
400,
|
|
)
|
|
|
|
if not redirect_uri:
|
|
LOG.d("no redirect uri")
|
|
return "redirect_uri must be set", 400
|
|
|
|
client = Client.get_by(oauth_client_id=oauth_client_id)
|
|
if not client:
|
|
final_redirect_uri = (
|
|
f"{redirect_uri}?error=invalid_client_id&client_id={oauth_client_id}"
|
|
)
|
|
return redirect(final_redirect_uri)
|
|
|
|
# check if redirect_uri is valid
|
|
# allow localhost by default
|
|
hostname, scheme = get_host_name_and_scheme(redirect_uri)
|
|
if hostname != "localhost" and hostname != "127.0.0.1":
|
|
# support custom scheme for mobile app
|
|
if scheme == "http":
|
|
final_redirect_uri = f"{redirect_uri}?error=http_not_allowed"
|
|
return redirect(final_redirect_uri)
|
|
|
|
if not RedirectUri.get_by(client_id=client.id, uri=redirect_uri):
|
|
final_redirect_uri = f"{redirect_uri}?error=unknown_redirect_uri"
|
|
return redirect(final_redirect_uri)
|
|
|
|
# redirect from client website
|
|
if request.method == "GET":
|
|
if current_user.is_authenticated:
|
|
suggested_email, other_emails, email_suffix = None, [], None
|
|
suggested_name, other_names = None, []
|
|
|
|
# user has already allowed this client
|
|
client_user: ClientUser = ClientUser.get_by(
|
|
client_id=client.id, user_id=current_user.id
|
|
)
|
|
user_info = {}
|
|
if client_user:
|
|
LOG.debug("user %s has already allowed client %s", current_user, client)
|
|
user_info = client_user.get_user_info()
|
|
else:
|
|
suggested_email, other_emails = current_user.suggested_emails(
|
|
client.name
|
|
)
|
|
suggested_name, other_names = current_user.suggested_names()
|
|
email_suffix = random_word()
|
|
|
|
return render_template(
|
|
"oauth/authorize.html",
|
|
client=client,
|
|
user_info=user_info,
|
|
client_user=client_user,
|
|
Scope=Scope,
|
|
suggested_email=suggested_email,
|
|
personal_email=current_user.email,
|
|
suggested_name=suggested_name,
|
|
other_names=other_names,
|
|
other_emails=other_emails,
|
|
email_suffix=email_suffix,
|
|
EMAIL_DOMAIN=EMAIL_DOMAIN,
|
|
)
|
|
else:
|
|
# after user logs in, redirect user back to this page
|
|
return render_template(
|
|
"oauth/authorize_nonlogin_user.html",
|
|
client=client,
|
|
next=request.url,
|
|
Scope=Scope,
|
|
)
|
|
else: # user allows or denies
|
|
if request.form.get("button") == "deny":
|
|
LOG.debug("User %s denies Client %s", current_user, client)
|
|
final_redirect_uri = f"{redirect_uri}?error=deny&state={state}"
|
|
return redirect(final_redirect_uri)
|
|
|
|
LOG.debug("User %s allows Client %s", current_user, client)
|
|
client_user = ClientUser.get_by(client_id=client.id, user_id=current_user.id)
|
|
|
|
# user has already allowed this client, user cannot change information
|
|
if client_user:
|
|
LOG.d("user %s has already allowed client %s", current_user, client)
|
|
else:
|
|
email_suffix = request.form.get("email-suffix")
|
|
custom_email_prefix = request.form.get("custom-email-prefix")
|
|
chosen_email = request.form.get("suggested-email")
|
|
|
|
suggested_name = request.form.get("suggested-name")
|
|
custom_name = request.form.get("custom-name")
|
|
|
|
use_default_avatar = request.form.get("avatar-choice") == "default"
|
|
|
|
gen_email = None
|
|
if custom_email_prefix:
|
|
# check if user can generate custom email
|
|
if not current_user.can_create_new_custom_alias():
|
|
raise Exception(f"User {current_user} cannot create custom email")
|
|
|
|
email = f"{convert_to_id(custom_email_prefix)}.{email_suffix}@{EMAIL_DOMAIN}"
|
|
LOG.d("create custom email alias %s for user %s", email, current_user)
|
|
|
|
if GenEmail.get_by(email=email) or DeletedAlias.get_by(email=email):
|
|
LOG.error("email %s already used, very rare!", email)
|
|
flash(f"alias {email} already used", "error")
|
|
return redirect(request.url)
|
|
|
|
gen_email = GenEmail.create(
|
|
email=email, user_id=current_user.id, custom=True
|
|
)
|
|
db.session.flush()
|
|
else: # user picks an email from suggestion
|
|
if chosen_email != current_user.email:
|
|
gen_email = GenEmail.get_by(email=chosen_email)
|
|
if not gen_email:
|
|
gen_email = GenEmail.create(
|
|
email=chosen_email, user_id=current_user.id
|
|
)
|
|
db.session.flush()
|
|
|
|
client_user = ClientUser.create(
|
|
client_id=client.id, user_id=current_user.id
|
|
)
|
|
if gen_email:
|
|
client_user.gen_email_id = gen_email.id
|
|
|
|
if custom_name:
|
|
LOG.d(
|
|
"use custom name %s for user %s client %s",
|
|
custom_name,
|
|
current_user,
|
|
client,
|
|
)
|
|
client_user.name = custom_name
|
|
elif suggested_name != current_user.name:
|
|
LOG.d(
|
|
"use another name %s for user %s client %s",
|
|
custom_name,
|
|
current_user,
|
|
client,
|
|
)
|
|
client_user.name = suggested_name
|
|
|
|
if use_default_avatar:
|
|
# use default avatar
|
|
LOG.d("use default avatar for user %s client %s", current_user, client)
|
|
client_user.default_avatar = True
|
|
|
|
db.session.flush()
|
|
LOG.d("create client-user for client %s, user %s", client, current_user)
|
|
|
|
redirect_args = {}
|
|
|
|
if state:
|
|
redirect_args["state"] = state
|
|
else:
|
|
LOG.warning(
|
|
"more security reason, state should be added. client %s", client
|
|
)
|
|
|
|
if scope:
|
|
redirect_args["scope"] = scope
|
|
|
|
auth_code = None
|
|
if ResponseType.CODE in response_types:
|
|
# Create authorization code
|
|
auth_code = AuthorizationCode.create(
|
|
client_id=client.id,
|
|
user_id=current_user.id,
|
|
code=random_string(),
|
|
scope=scope,
|
|
redirect_uri=redirect_uri,
|
|
response_type=response_types_to_str(response_types),
|
|
)
|
|
db.session.add(auth_code)
|
|
redirect_args["code"] = auth_code.code
|
|
|
|
oauth_token = None
|
|
if ResponseType.TOKEN in response_types:
|
|
# create access-token
|
|
oauth_token = OauthToken.create(
|
|
client_id=client.id,
|
|
user_id=current_user.id,
|
|
scope=scope,
|
|
redirect_uri=redirect_uri,
|
|
access_token=generate_access_token(),
|
|
response_type=response_types_to_str(response_types),
|
|
)
|
|
db.session.add(oauth_token)
|
|
redirect_args["access_token"] = oauth_token.access_token
|
|
|
|
if ResponseType.ID_TOKEN in response_types:
|
|
redirect_args["id_token"] = make_id_token(
|
|
client_user,
|
|
nonce,
|
|
oauth_token.access_token if oauth_token else None,
|
|
auth_code.code if auth_code else None,
|
|
)
|
|
|
|
db.session.commit()
|
|
|
|
# should all params appended the url using fragment (#) or query
|
|
fragment = False
|
|
|
|
if response_mode and response_mode == "fragment":
|
|
fragment = True
|
|
|
|
# if response_types contain "token" => implicit flow => should use fragment
|
|
# except if client sets explicitly response_mode
|
|
if not response_mode:
|
|
if ResponseType.TOKEN in response_types:
|
|
fragment = True
|
|
|
|
# construct redirect_uri with redirect_args
|
|
return redirect(construct_url(redirect_uri, redirect_args, fragment))
|
|
|
|
|
|
def construct_url(url, args: Dict[str, str], fragment: bool = False):
|
|
for i, (k, v) in enumerate(args.items()):
|
|
# make sure to escape v
|
|
v = encode_url(v)
|
|
|
|
if i == 0:
|
|
if fragment:
|
|
url += f"#{k}={v}"
|
|
else:
|
|
url += f"?{k}={v}"
|
|
else:
|
|
url += f"&{k}={v}"
|
|
|
|
return url
|
|
|
|
|
|
def generate_access_token() -> str:
|
|
"""generate an access-token that does not exist before"""
|
|
access_token = random_string(40)
|
|
|
|
if not OauthToken.get_by(access_token=access_token):
|
|
return access_token
|
|
|
|
# Rerun the function
|
|
LOG.warning("access token already exists, generate a new one")
|
|
return generate_access_token()
|
|
|
|
|
|
def get_host_name_and_scheme(url: str) -> (str, str):
|
|
"""http://localhost:7777?a=b -> (localhost, http) """
|
|
url_comp = urlparse(url)
|
|
|
|
return url_comp.hostname, url_comp.scheme
|