Authentication with Flask and GitHub | Authlib

#authlib #flask #github #nelsoncode

For this example we will use Authlib which is the ultimate Python library in building OAuth and OpenID Connect servers

Installation



pip3 install Flask Authlib requests python-dotenv

Configuration



from flask import Flask, url_for, redirect

from dotenv import load_dotenv

from os import getenv

from authlib.integrations.flask_client import OAuth

app = Flask(name)

app.secret_key = "mysecretkey"

oauth = OAuth(app)

github = oauth.register(

    name='github',

    client_id=getenv("CLIENT_ID"),

    client_secret=getenv("SECRET_ID"),

    access_token_url='https://github.com/login/oauth/access_token',

    access_token_params=None,

    authorize_url='https://github.com/login/oauth/authorize',

    authorize_params=None,

    api_base_url='https://api.github.com/',

    client_kwargs={'scope': 'user:email'},

)   

@app.route("/")

def saludo():

    return "Hello"

if name == 'main':

    load_dotenv()

    app.run(debug=True, port=4000, host="0.0.0.0")

Route for Authorization

authorize_redirect indicates the url to redirect to the "Callback URL"



@app.route("/login")

def login():

    redirect_url = url_for("authorize", _external=True)

    return github.authorize_redirect(redirect_url)

Callback URL



@app.route("/authorize")

def authorize():

    token = github.authorize_access_token()

    resp = github.get('user', token=token)

    profile = resp.json()

    # do something with the token and profile

    print(profile, token)

    return redirect('/')