[keycloak-dev] html app, node api server and keycloak

[Luke Holmquist]

On Fri, Apr 29, 2016 at 2:01 PM, gambol <gambol99 at gmail.com> wrote:

> If I'm not mistaken the access type would be 'public' since you can't
> secure the client secret (
> http://stackoverflow.com/questions/14574846/client-authentication-on-public-client)
> ...
>
Yeah, i think that was always the plan for the html app, possibly also with
the implicit grant flow

> In regard to the API, there's technically no need to speak to keycloak to
> verify the token, given the jwt is signed by the provider. So assuming the
> library your using on the API pulls the jwt public keys from keycloak
> (openid discovery URL perhaps) or has it hardcoded, you have everything you
> need to verify the the token.
>
> Rohith
> crap, forget the subject line
>
> On Fri, Apr 29, 2016 at 1:09 PM, Luke Holmquist <lholmqui at redhat.com>
> wrote:
>
>> I have a use case, that i think could be pretty common,  but i'm not
>> entirely sure how to setup it up.
>>
>> The following is a little bit of a thought dump, so pardon me if i ramble
>> a little bit.
>>
>>
>> There are i think 3 components involved here:
>>
>> 1. a pure HTML/JS web app
>>
>> 2. A node.js REST  API server
>>
>> 3. Keycloak server
>>
>>
>> The app in this case, would not be served by the node server or the KC
>> server(wildfly), but with something like nginx(or even something like
>> 'python simpleHTTPServer')
>>
>> Basically the flow would be something like this[1]:
>>
>> The web app, using the js adapter, authenticates against the KC server.
>>
>>  Now the web app would like to call the node API server(a restricted
>> endpoint) to get some data
>>
>> The web app probably adds the token stuff that it got from KC during it;s
>> login to the request to the node server
>>
>> ***This next part is where i'm getting a little confused, i'm aware that
>> code to do this might not be written yet****
>>
>> I'm thinking the node server takes the token from the web app request,
>> and would hit an endpoint on the KC server to make sure that token is
>> valid.
>>
>> If things go ok, then node server returns the data.
>>
>> I've seen the recent post on doing token introspection and abstracj was
>> nice enough to make that into a gist,
>> https://gist.github.com/abstractj/4cd2231a472069d8b6f63b4008c74061
>>
>> but this would also mean the web client access_type would need to be
>> confidential(which i don't think is secure for a web app) to make a service
>> account that the node server could use to do the token introspection.
>>
>> I was thinking of maybe creating a client also for the node server, but
>> is it possible for 1 client to lookup/validate tokens from another client.
>>
>>
>> Perhaps i'm thinking about this all wrong too, which is very possible.
>>
>> In this example there is only 1 node api server,  but there could be
>> multiple node/go/rust/<insert cool kid tech here> servers too
>>
>>
>>
>> Any guidance would be appreciated and sorry for the ramble
>>
>> -Luke
>>
>>
>>
>>
>>
>>
>> [1]
>> https://docs.google.com/drawings/d/1BngijxAV2j0rjz18P0XcXeY9CClCg1mwQhROYQ2iWtU/edit
>>
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>>
>
>
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