app-MAIL-temp/app/auth/views/github.py

94 lines
2.7 KiB
Python
Raw Normal View History

2019-07-07 22:46:03 +02:00
import arrow
from flask import request, session, redirect, url_for, flash
from flask_login import login_user
from requests_oauthlib import OAuth2Session
from app.auth.base import auth_bp
from app.config import GITHUB_CLIENT_ID, GITHUB_CLIENT_SECRET
from app.email_utils import notify_admin
from app.extensions import db
from app.log import LOG
from app.models import User
from app.utils import random_string
authorization_base_url = "https://github.com/login/oauth/authorize"
token_url = "https://github.com/login/oauth/access_token"
@auth_bp.route("/github/login")
def github_login():
github = OAuth2Session(GITHUB_CLIENT_ID, scope=["user:email"])
authorization_url, state = github.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("/github/callback")
def github_callback():
github = OAuth2Session(
GITHUB_CLIENT_ID, state=session["oauth_state"], scope=["user:email"]
)
token = github.fetch_token(
token_url,
client_secret=GITHUB_CLIENT_SECRET,
authorization_response=request.url,
)
# a dict with "name", "login"
github_user_data = github.get("https://api.github.com/user").json()
LOG.d("user login with github %s", github_user_data)
# return list of emails
# {
# 'email': 'abcd@gmail.com',
# 'primary': False,
# 'verified': True,
# 'visibility': None
# }
emails = github.get("https://api.github.com/user/emails").json()
# only take the primary email
email = None
for e in emails:
if e.get("verified") and e.get("primary"):
email = e.get("email")
break
if not email:
raise Exception("cannot get email for github user")
user = User.get_by(email=email)
if user:
login_user(user)
# create user
else:
LOG.d("create github user")
user = User.create(email=email, name=github_user_data["name"])
# set a random password
user.set_password(random_string(20))
user.activated = True
db.session.commit()
login_user(user)
flash(f"Welcome to SimpleLogin {user.name}!", "success")
notify_admin(
f"new user signs up {user.email}", f"{user.name} signs up at {arrow.now()}"
)
# The activation link contains the original page, for ex authorize page
if "next" in request.args:
next_url = request.args.get("next")
LOG.debug("redirect user to %s", next_url)
return redirect(next_url)
else:
LOG.debug("redirect user to dashboard")
return redirect(url_for("dashboard.index"))