added a server.py, which does google api handling via google auth oauthlib flow. works
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server.py
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169
server.py
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# -*- coding: utf-8 -*-
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import os
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import flask
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import requests
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import google.oauth2.credentials
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import google_auth_oauthlib.flow
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import googleapiclient.discovery
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# This variable specifies the name of a file that contains the OAuth 2.0
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# information for this application, including its client_id and client_secret.
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CLIENT_SECRETS_FILE = "client_secret.json"
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# This OAuth 2.0 access scope allows for full read/write access to the
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# authenticated user's account and requires requests to use an SSL connection.
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SCOPES = ['https://www.googleapis.com/auth/calendar.readonly']
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API_SERVICE_NAME = 'drive'
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API_VERSION = 'v2'
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app = flask.Flask(__name__)
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# Note: A secret key is included in the sample so that it works.
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# If you use this code in your application, replace this with a truly secret
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# key. See https://flask.palletsprojects.com/quickstart/#sessions.
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app.secret_key = 'REPLACE ME - this value is here as a placeholder.'
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@app.route('/')
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def index():
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return print_index_table()
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@app.route('/test')
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def test_api_request():
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if 'credentials' not in flask.session:
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return flask.redirect('authorize')
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# Load credentials from the session.
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credentials = google.oauth2.credentials.Credentials(
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**flask.session['credentials'])
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drive = googleapiclient.discovery.build(
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API_SERVICE_NAME, API_VERSION, credentials=credentials)
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files = drive.files().list().execute()
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# Save credentials back to session in case access token was refreshed.
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# ACTION ITEM: In a production app, you likely want to save these
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# credentials in a persistent database instead.
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flask.session['credentials'] = credentials_to_dict(credentials)
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return flask.jsonify(**files)
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@app.route('/authorize')
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def authorize():
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# Create flow instance to manage the OAuth 2.0 Authorization Grant Flow steps.
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flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
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CLIENT_SECRETS_FILE, scopes=SCOPES)
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# The URI created here must exactly match one of the authorized redirect URIs
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# for the OAuth 2.0 client, which you configured in the API Console. If this
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# value doesn't match an authorized URI, you will get a 'redirect_uri_mismatch'
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# error.
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flow.redirect_uri = flask.url_for('oauth2callback', _external=True)
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authorization_url, state = flow.authorization_url(
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# Enable offline access so that you can refresh an access token without
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# re-prompting the user for permission. Recommended for web server apps.
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access_type='offline',
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# Enable incremental authorization. Recommended as a best practice.
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include_granted_scopes='true')
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# Store the state so the callback can verify the auth server response.
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flask.session['state'] = state
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return flask.redirect(authorization_url)
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@app.route('/oauth2callback')
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def oauth2callback():
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# Specify the state when creating the flow in the callback so that it can
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# verified in the authorization server response.
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state = flask.session['state']
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flow = google_auth_oauthlib.flow.Flow.from_client_secrets_file(
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CLIENT_SECRETS_FILE, scopes=SCOPES, state=state)
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flow.redirect_uri = flask.url_for('oauth2callback', _external=True)
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# Use the authorization server's response to fetch the OAuth 2.0 tokens.
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authorization_response = flask.request.url
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flow.fetch_token(authorization_response=authorization_response)
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# Store credentials in the session.
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# ACTION ITEM: In a production app, you likely want to save these
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# credentials in a persistent database instead.
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credentials = flow.credentials
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flask.session['credentials'] = credentials_to_dict(credentials)
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return flask.redirect(flask.url_for('test_api_request'))
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@app.route('/revoke')
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def revoke():
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if 'credentials' not in flask.session:
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return ('You need to <a href="/authorize">authorize</a> before ' +
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'testing the code to revoke credentials.')
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credentials = google.oauth2.credentials.Credentials(
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**flask.session['credentials'])
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revoke = requests.post('https://oauth2.googleapis.com/revoke',
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params={'token': credentials.token},
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headers = {'content-type': 'application/x-www-form-urlencoded'})
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status_code = getattr(revoke, 'status_code')
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if status_code == 200:
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return('Credentials successfully revoked.' + print_index_table())
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else:
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return('An error occurred.' + print_index_table())
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@app.route('/clear')
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def clear_credentials():
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if 'credentials' in flask.session:
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del flask.session['credentials']
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return ('Credentials have been cleared.<br><br>' +
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print_index_table())
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def credentials_to_dict(credentials):
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return {'token': credentials.token,
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'refresh_token': credentials.refresh_token,
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'token_uri': credentials.token_uri,
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'client_id': credentials.client_id,
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'client_secret': credentials.client_secret,
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'scopes': credentials.scopes}
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def print_index_table():
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return ('<table>' +
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'<tr><td><a href="/test">Test an API request</a></td>' +
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'<td>Submit an API request and see a formatted JSON response. ' +
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' Go through the authorization flow if there are no stored ' +
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' credentials for the user.</td></tr>' +
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'<tr><td><a href="/authorize">Test the auth flow directly</a></td>' +
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'<td>Go directly to the authorization flow. If there are stored ' +
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' credentials, you still might not be prompted to reauthorize ' +
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' the application.</td></tr>' +
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'<tr><td><a href="/revoke">Revoke current credentials</a></td>' +
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'<td>Revoke the access token associated with the current user ' +
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' session. After revoking credentials, if you go to the test ' +
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' page, you should see an <code>invalid_grant</code> error.' +
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'</td></tr>' +
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'<tr><td><a href="/clear">Clear Flask session credentials</a></td>' +
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'<td>Clear the access token currently stored in the user session. ' +
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' After clearing the token, if you <a href="/test">test the ' +
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' API request</a> again, you should go back to the auth flow.' +
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'</td></tr></table>')
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if __name__ == '__main__':
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# When running locally, disable OAuthlib's HTTPs verification.
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# ACTION ITEM for developers:
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# When running in production *do not* leave this option enabled.
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os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
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# Specify a hostname and port that are set as a valid redirect URI
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# for your API project in the Google API Console.
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app.run('192.168.68.103.xip.io', 1234 , debug=True)
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29
website.py
29
website.py
@@ -1,11 +1,21 @@
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from google.oauth2 import id_token
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from google.auth.transport import requests
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import pickle
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import os.path
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from googleapiclient.discovery import build
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from http.server import HTTPServer, SimpleHTTPRequestHandler, BaseHTTPRequestHandler
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import socketserver
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import logging
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import json
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# some_file.py
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import sys
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# insert at 1, 0 is the script path (or '' in REPL)
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sys.path.insert(1, '../calenderwatch_server/')
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Handler = SimpleHTTPRequestHandler
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class S(BaseHTTPRequestHandler):
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@@ -27,7 +37,8 @@ class S(BaseHTTPRequestHandler):
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print("in post method")
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self.data_string = self.rfile.read(int(self.headers['Content-Length']))
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print('checking client id')
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checkClientId(self.data_string)
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if checkClientId(self.data_string):
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getApiAuth(self.data_string)
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self.send_response(200)
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self.end_headers()
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self.wfile.write("Hello".encode('utf-8'))
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@@ -66,10 +77,24 @@ def checkClientId(token):
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# ID token is valid. Get the user's Google Account ID from the decoded token.
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userid = idinfo['sub']
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print(f"valid user id: {userid}")
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return True
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except ValueError:
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# ID token is invalid
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print('invalid token')
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pass
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return False
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def getApiAuth(token):
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with open('client_secret.json', 'r') as json_file:
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clientSecret = json.load(json_file)
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CLIENT_ID = clientSecret["web"]["client_id"]
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# Specify the CLIENT_ID of the app that accesses the backend:
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idinfo = id_token.verify_oauth2_token(token, requests.Request(), CLIENT_ID)
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# creds = pickle.load(idinfo)
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service = build('calendar', 'v3', credentials=idinfo)
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if __name__ == '__main__':
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from sys import argv
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