ASF Oauth Examples

asf-oauth-example.py

#!/usr/bin/env python3

""" ASF OAuth example in Python 3"""
import cgi
import os
import requests
import urllib
import uuid

def init_oauth():
    """ This is what is used to initiate an OAuth request """
    
    # Make a state object where you can store things for later.
    state_id = str(uuid.uuid4())
    state_object = {
        'stuff': 'mystuff',
        'id': state_id
    }
    
    # Save the state using whatever you wish, pseudo-call below!
    save_state(state_object)
    
    # Figure out where our own callback URL is, and what parameters we'd
    # like passed along, such as the state ID
    callback_url = "https://foo.apache.org/mycallback?state=%s" % state_id
    
    # Set the OAuth gateway URL
    oauth_gateway = "https://oauth.apache.org/auth"
    
    # Construct the full redirect URL we are about to pass to browser
    redirect_url = "%s?state=%s&redirect_uri=%s" % (
        oauth_gateway,
        state_id,
        urllib.parse.quote(callback_url)
        )
    
    # Redirect the browser!
    print("Status: 302 Found")
    print("Location: %s" %redirect_url)
    print("Content-Type: text/plain")
    print("")
    print("Moved to: %s" % redirect_url)

def callback():
    """ This is our callback after the OAuth system has processed login """
    params = cgi.FieldStorage()
    
    # Get state ID and OAuth token
    state_id = params.getvalue('state')
    code = params.getvalue('code')
    
    # Validate state ID and code if need be
    validate_parameters_somehow(state_id, code)
    
    # Fetch our state object from wherever we stored it (pseudo-call!)
    state_object = load_state(state_id)
    
    # Call up OAuth system and get results!
    rv = requests.get("https://oauth.apache.org/token?code=%s" % code).json()
    
    # Check that the token is valid and login worked
    if rv.status_code != 200:
        bork("Something went wrong!")
    # If all good, fetch data and load the JSON into python
    else:
        credentials = rv.json()
        
        # Validate that our state ID matches the one in the credentials
        if credentials['state'] != state_id:
            bork("This isn't the data I was hoping for!")
        else:
            # All good, do your stuff!
            do_stuff_with_credentials(credentials)
    

def main():
    """ Simple CGI that derives an action from the URL """
    action = os.environ.get('SCRIPT_NAME', '/auth')
    
    # Init OAuth session?
    if action == '/auth':
        init_oauth()
    # Callback??
    elif action == '/mycallback':
        callback()
    else:
        bork("I dunno what to do")
    
if __name__ == '__main__':
    main()

Thank you.

Thank

You

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