app-MAIL-temp/app/auth/views/google.py
Son 372466ab06 do not use flask-sqlalchemy
- add __tablename__ for all models
- use sa and orm instead of db
- rollback all changes in tests
- remove session in @app.teardown_appcontext
2021-10-12 14:36:47 +02:00

126 lines
3.9 KiB
Python

from flask import request, session, redirect, flash, url_for
from requests_oauthlib import OAuth2Session
from app import s3
from app.auth.base import auth_bp
from app.config import URL, GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET
from app.db import Session
from app.log import LOG
from app.models import User, File, SocialAuth
from app.utils import random_string, sanitize_email
from .login_utils import after_login
_authorization_base_url = "https://accounts.google.com/o/oauth2/v2/auth"
_token_url = "https://www.googleapis.com/oauth2/v4/token"
_scope = [
"https://www.googleapis.com/auth/userinfo.email",
"https://www.googleapis.com/auth/userinfo.profile",
"openid",
]
# need to set explicitly redirect_uri instead of leaving the lib to pre-fill redirect_uri
# when served behind nginx, the redirect_uri is localhost... and not the real url
_redirect_uri = URL + "/auth/google/callback"
@auth_bp.route("/google/login")
def google_login():
# to avoid flask-login displaying the login error message
session.pop("_flashes", None)
next_url = request.args.get("next")
# Google does not allow to append param to redirect_url
# we need to pass the next url by session
if next_url:
session["google_next_url"] = next_url
google = OAuth2Session(GOOGLE_CLIENT_ID, scope=_scope, redirect_uri=_redirect_uri)
authorization_url, state = google.authorization_url(_authorization_base_url)
# State is used to prevent CSRF, keep this for later.
session["oauth_state"] = state
return redirect(authorization_url)
@auth_bp.route("/google/callback")
def google_callback():
# user clicks on cancel
if "error" in request.args:
flash("please use another sign in method then", "warning")
return redirect("/")
google = OAuth2Session(
GOOGLE_CLIENT_ID,
# some how Google Login fails with oauth_state KeyError
# state=session["oauth_state"],
scope=_scope,
redirect_uri=_redirect_uri,
)
google.fetch_token(
_token_url,
client_secret=GOOGLE_CLIENT_SECRET,
authorization_response=request.url,
)
# Fetch a protected resource, i.e. user profile
# {
# "email": "abcd@gmail.com",
# "family_name": "First name",
# "given_name": "Last name",
# "id": "1234",
# "locale": "en",
# "name": "First Last",
# "picture": "http://profile.jpg",
# "verified_email": true
# }
google_user_data = google.get(
"https://www.googleapis.com/oauth2/v1/userinfo"
).json()
email = sanitize_email(google_user_data["email"])
user = User.get_by(email=email)
picture_url = google_user_data.get("picture")
if user:
if picture_url and not user.profile_picture_id:
LOG.d("set user profile picture to %s", picture_url)
file = create_file_from_url(user, picture_url)
user.profile_picture_id = file.id
Session.commit()
else:
flash(
"Sorry you cannot sign up via Google, please use email/password sign-up instead",
"error",
)
return redirect(url_for("auth.register"))
next_url = None
# The activation link contains the original page, for ex authorize page
if "google_next_url" in session:
next_url = session["google_next_url"]
LOG.d("redirect user to %s", next_url)
# reset the next_url to avoid user getting redirected at each login :)
session.pop("google_next_url", None)
if not SocialAuth.get_by(user_id=user.id, social="google"):
SocialAuth.create(user_id=user.id, social="google")
Session.commit()
return after_login(user, next_url)
def create_file_from_url(user, url) -> File:
file_path = random_string(30)
file = File.create(path=file_path, user_id=user.id)
s3.upload_from_url(url, file_path)
Session.flush()
LOG.d("upload file %s to s3", file)
return file