Can I use the Discourse API to authenticate users in another app?

SSO
13

I’ve tried to apply this but can’t get it to work. Below is some (simplified) Python code that generates a url for .../session/sso_provider. When I try it, I get Login Error. No idea what that means.

import secrets
import base64
import urllib.parse
import hmac
import hashlib

forum_url = 'https://forum.embeetle.com'
target_url = 'https://embeetle.com/#account'
sso_secret = b'JCLSVcqbAnEPXz2p2xBY'

nonce = secrets.token_urlsafe()
payload = f'nonce={nonce}&return_sso_url={target_url}'
payload_base64 = base64.b64encode(payload.encode('utf-8')).decode()
payload_for_url = urllib.parse.quote(payload_base64)

payload_for_url = 'bm9uY2U9YklKeEU1WWw2OFhjSkJydGlwSU15UTRZeVlMeWd6ZzQyUU9mOFo0SWF5QSZyZXR1cm5fc3NvX3VybD1odHRwczovL2VtYmVldGxlLmNvbS8jYWNjb3VudA%3D%3D'

signature = hmac.new(
    sso_secret, payload_for_url.encode('utf-8'), hashlib.sha256
).hexdigest()

print(f'{forum_url}/session/sso_provider?sso={payload_for_url}&sig={signature}')

For example, one run might generate the url in the curl command below:

johan@morla:~/sa\> curl 'https://forum.embeetle.com/session/sso_provider?sso=bm9uY2U9YklKeEU1WWw2OFhjSkJydGlwSU15UTRZeVlMeWd6ZzQyUU9mOFo0SWF5QSZyZXR1cm5fc3NvX3VybD1odHRwczovL2VtYmVldGxlLmNvbS8jYWNjb3VudA%3D%3D&sig=a392ebb81b93ba7411290fbd00240921ae053bbb82998830dda994c8a71853da'
Login Errorjohan@morla:~/sa\>