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90 lines
3 KiB
Python
90 lines
3 KiB
Python
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"""
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This is an example on how to integrate SimpleLogin
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with Requests-OAuthlib, a popular library to work with OAuth in Python.
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The step-to-step guide can be found on https://docs.simplelogin.io
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This example is based on
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https://requests-oauthlib.readthedocs.io/en/latest/examples/real_world_example.html
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"""
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import os
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from flask import Flask, request, redirect, session, url_for
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from flask.json import jsonify
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from requests_oauthlib import OAuth2Session
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app = Flask(__name__)
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# this demo uses flask.session that requires the `secret_key` to be set
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app.secret_key = "very secret"
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# "prettify" the returned json in /profile
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app.config["JSONIFY_PRETTYPRINT_REGULAR"] = True
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# This client credential is obtained upon registration of a new SimpleLogin App on
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# https://app.simplelogin.io/developer/new_client
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# Please make sure to export these credentials to env variables:
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# export CLIENT_ID={your_client_id}
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# export CLIENT_SECRET={your_client_secret}
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client_id = os.environ.get("CLIENT_ID") or "client-id"
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client_secret = os.environ.get("CLIENT_SECRET") or "client-secret"
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# SimpleLogin urls
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authorization_base_url = "http://localhost:7777/oauth2/authorize"
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token_url = "http://localhost:7777/oauth2/token"
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userinfo_url = "http://localhost:7777/oauth2/userinfo"
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@app.route("/")
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def demo():
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"""Step 1: User Authorization.
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Redirect the user/resource owner to the OAuth provider (i.e. SimpleLogin)
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using an URL with a few key OAuth parameters.
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"""
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simplelogin = OAuth2Session(
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client_id, redirect_uri="http://127.0.0.1:5000/callback"
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)
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authorization_url, state = simplelogin.authorization_url(authorization_base_url)
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# State is used to prevent CSRF, keep this for later.
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session["oauth_state"] = state
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return redirect(authorization_url)
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# Step 2: User authorization, this happens on the provider.
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@app.route("/callback", methods=["GET"])
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def callback():
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""" Step 3: Retrieving an access token.
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The user has been redirected back from the provider to your registered
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callback URL. With this redirection comes an authorization code included
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in the redirect URL. We will use that to obtain an access token.
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"""
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simplelogin = OAuth2Session(client_id, state=session["oauth_state"])
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token = simplelogin.fetch_token(
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token_url, client_secret=client_secret, authorization_response=request.url
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)
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# At this point you can fetch protected resources but lets save
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# the token and show how this is done from a persisted token
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# in /profile.
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session["oauth_token"] = token
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return redirect(url_for(".profile"))
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@app.route("/profile", methods=["GET"])
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def profile():
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"""Fetching a protected resource using an OAuth 2 token.
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"""
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simplelogin = OAuth2Session(client_id, token=session["oauth_token"])
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return jsonify(simplelogin.get(userinfo_url).json())
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# This allows us to use a plain HTTP callback
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os.environ["OAUTHLIB_INSECURE_TRANSPORT"] = "1"
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if __name__ == "__main__":
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app.secret_key = os.urandom(24)
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app.run(debug=True)
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