OAuth flow

Authorization code flow:

http://localhost:7777/oauth/authorize?client_id=client-id&state=123456&response_type=code&redirect_uri=http%3A%2F%2Flocalhost%3A7000%2Fcallback&state=dvoQ6Jtv0PV68tBUgUMM035oFiZw57

Implicit flow: http://localhost:7777/oauth/authorize?client_id=client-id&state=123456&response_type=token&redirect_uri=http%3A%2F%2Flocalhost%3A7000%2Fcallback&state=dvoQ6Jtv0PV68tBUgUMM035oFiZw57

Exchange the code to get the token with {code} replaced by the code obtained in previous step.

http -f -a client-id:client-secret http://localhost:7777/oauth/token grant_type=authorization_code code={code}

Get user info:

http http://localhost:7777/oauth/user_info 'Authorization:Bearer {token}'

Template structure

base single: for login, register page default: for all pages when user log ins

How to create new migration

Whenever the model changes, a new migration needs to be created

Set the database connection to use staging environment:

ln -sf ~/config/simplelogin/staging.env .env

Generate the migration script and make sure to review it:

flask db migrate

Code structure

local_data/: contain files used only locally. In deployment, these files should be replaced. - jwtRS256.key: generated using

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub

OpenID, OAuth2 response_type & scope

According to https://medium.com/@darutk/diagrams-of-all-the-openid-connect-flows-6968e3990660

• response_type can be either code, token, id_token or any combination.
• scope can contain openid or not

Below is the different combinations that are taken into account until now:

response_type=code scope: with openid in scope, return id_token at /token: OK without: OK

response_type=token scope: with and without openid, nothing to do: OK

response_type=id_token return id_token in /authorization endpoint

response_type=id_token token return id_token in addition to access_token in /authorization endpoint

response_type=id_token code return id_token in addition to authorization_code in /authorization endpoint

Plan Upgrade, downgrade flow

Here's an example:

July 2019: user takes yearly plan, valid until July 2020 user.plan=yearly, user.plan_expiration=None set user.stripe card-token, customer-id, subscription-id

December 2019: user cancels his plan. set plan_expiration to "period end of subscription", ie July 2020 call stripe: stripe.Subscription.modify( user.stripe_subscription_id, cancel_at_period_end=True )

There are 2 possible scenarios at this point:

1. user decides to renew on March 2020: set plan_expiration = None stripe.Subscription.modify( user.stripe_subscription_id, cancel_at_period_end=False )

2. the plan ends on July 2020. The cronjob set

• user stripe_subscription_id , stripe_card_token, stripe_customer_id to None
• user.plan=free, user.plan_expiration=None
• delete customer on stripe

user decides to take the premium plan again: go through all normal flow