Re: [keycloak-user] Per-client authorization

On 20/08/2019 12:29, Chris Boot wrote: [snip] Hi all, Because this question seems to have been asked over and over and precious few answers have appeared, and I've spent all day hacking at this, here is what I've come up with. I'm running Keycloak 6.0.1 for anyone who stumbles across this post in search results in the future. First, enable the "scripts" profile in Keycloak. Basically pass "-Dkeycloak.profile.feature.scripts=enabled" on the command-line or whatever variant of that which makes sense for your environment. Then, in your relevant realm, copy the Browser and/or Direct Grant flows, and call it something like "Browser + Required Roles" or whatever. In your new flow, press "Add execution" and add a Script execution. Under the Actions menu for the new Script, choose Config. I configured mine as: Alias: require-client-roles Script Name: require-client-roles Description: Check that a user has all required roles assigned for a client Paste in the script below (also available at http://paste.debian.net/1096714/). Once saved, go back to your flow and change the Requirement to REQUIRED. Now you need to configure your client(s): - Pick the relevant client in Clients. - In the Settings tab, expand "Authentication Flow Overrides" and choose your new custom flow(s). - In the Roles tab, create a new role. - The name and description don't matter. - Once created, go into Attributes and set a new attribute "required" to "true". This is what the script looks for. At this point, nobody should be able to login to the client anymore. Users should be able to login again once the new role is assigned to them. I'd still like answers for this one. Basically pretending that "Offline access" isn't there should do the trick, but how? A custom theme? I hope this helps! Chris The script: /* * Check that a user has all required roles assigned for a client. * * This implements per-client authentication for Keycloak. Roles added to a * client can have the "required" attribute set to "true", which will mark them * as being required. Any users who do not have all the required roles will be * unable to authenticate using this script. * * Copyright (c) 2019 Tiger Computing Ltd. * Author: Chris Boot <crb(a)tiger-computing.co.uk&gt; */ // import enum for error lookup AuthenticationFlowError = Java.type("org.keycloak.authentication.AuthenticationFlowError"); function authenticate(context) { var username = user ? user.username : "anonymous"; LOG.info(script.name + ": trace auth for: " + username); var client = session.getContext().getClient(); LOG.info(script.name + ": auth to client: " + client.getClientId()); if (user) { // Find all client roles marked as required var requiredRoles = Java.from(client.getRoles()) .filter(function(role) { var required = role.getFirstAttribute("required"); return (required && required != "false"); }); // Play it safe: check that we have found at least one required role if (requiredRoles.length === 0) { LOG.warn(script.name + ": no required roles found, failing safe"); context.failure(AuthenticationFlowError.INVALID_USER); return; } // Check that the user has all required roles if (requiredRoles.every(function(role) user.hasRole(role))) { LOG.info(script.name + ": user has all required roles"); context.success(); return; } // The user is missing one or more required roles var missingRoles = requiredRoles .filter(function(role) !user.hasRole(role)) .map(function(role) role.getName()); LOG.warn(script.name + ": missing role(s): " + missingRoles); context.failure(AuthenticationFlowError.INVALID_USER); return; } LOG.warn(script.name + ": denying anonymous authentication"); context.failure(AuthenticationFlowError.INVALID_USER); } -- Chris Boot bootc(a)boo.tc