Hi,
is it possible to pre-fill the username field on the login form using the
OIDC protocol?
I had a look at the template and there is a parameter openIdLocalId which
enables this.
I created and configured the following LoginDecorator-Groovy script and it
works as expected when calling the login endpoint directly:
def run(Object[] args) {
def requestContext = args[0]
def applicationContext = args[1]
def logger = args[2]
// Url parameter can not be 'username' because cas uses this parameter
String usrName = requestContext.getRequestParameters().get("usrName")
if(usrName != null) {
logger.info("using preset username from request parameters: " +
usrName)
requestContext.getFlowScope().put("openIdLocalId", usrName)
}
}
Unfortunately when using OIDC the clients never call the /login endpoint
directly but instead first call the /authorize endpoint, which then
internally redirects to the /login endpoint - where unfortunately the
additional request parameter gets lost, rendering the script effect-less.
I scanned through the code, read the documentation and searched the web but
I couldnt find any information about it, the name "openIdLocalId" may imply
that it's got something to do with OIDC but I really cannot figure out how
to do it.
If there is another way to achieve this I would be happy to learn about it!
The usecase is that a client application requests the user to enter its
username and then decides depending on this to which IdP ( i.e. there are
multiple) the user will be redirected, the user shouldnt be required to
enter his username again after the re-direct to the IdP.
Thanks and best regards,
christian
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