[keycloak-user] Authorization code flow without a browser

[Aikeaguinea]

As I understand it, using the authorization code flow rather than the
implicit flow is recommended where possible.

We have a server-side client application, but the user agents making
requests are not browsers, but instead our own code.

I'm not entirely sure how to make the authorization code flow work
without a browser. For instance, if on the command line I request

curl
'http://host:port/auth/realms/foo/protocol/openid-connect/auth?response_type=code&client_id=test-client&state=state&redirect_uri=http://www.example.com/hello-world'

Then (assuming the parameters are correct) I get back an HTML login page
with a form. In order to submit the credentials, I would need to dig the
URL out of the action of the form and then submit a request like

curl -X POST -d 'username=test-user' -d 'password=test1234'
'http://host:port/auth/realms/foo/login-actions/authenticate?code=Ctr79aRsbwPPkC4nEeT2vR9-TuC31uuXngQXoHQH6FE.ef26cfcd-a35b-4d1e-a4f7-49790f6e2f00&execution=a86f56da-9900-4f1d-a461-f18617a2333b'

Three questions:
1. Is there some reason I shouldn't be trying to implement the
authorization code flow like this?

2. Is there a way to get the proper login action back without having to
dig it out of an HTML form? I've tried adding --header "Accept:
application/json" to the command but this has no effect.

3. Is there a way of submitting credentials other than by using form
parameters? I've tried HTTP basic auth but it doesn't work for me.

-- 
  Aikeaguinea
  aikeaguinea at xsmail.com

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