Keycloak

Dosaic.Plugins.Authorization.Keycloak is a plugin that allows to use authentication polices with an keycloak server instance for authentication & authorization.

Installation

To install the nuget package follow these steps:

dotnet add package Dosaic.Plugins.Authorization.Keycloak

or add as package reference to your .csproj

<PackageReference Include="Dosaic.Plugins.Authorization.Keycloak" Version="" />

Appsettings.yml

Configure your appsettings.yml with these properties

keycloak:
  enabled: true #whenever the whole plugin should be active or not
  host: host.example #keycloak host url
  insecure: false i used protocol https vs http
  realms:
    prefix: '/realms/' # url prefix which should be used before the realm
  policies: # policies which should be available within the service/application
    - name: READ
      roles:
        - API_PERMISSIONS_READ
    - name: WRITE
      roles:
        - API_PERMISSIONS_WRITE

PluginReadmeTemplateConfig.cs

[Configuration("keycloak")]
    public class KeycloakPluginConfiguration
    {
        public bool Enabled { get; set; }
        public string? Host { get; set; }
        public bool Insecure { get; set; }
        public RealmsConfig Realms { get; set; } = new RealmsConfig();
        public IList<AuthPolicy> Policies { get; set; } = new List<AuthPolicy>();
    }
    public class RealmsConfig
    {
        public string Prefix { get; set; } = "/auth/realms/";
    }

Usage

public class PluginReadme : IPluginEndpointsConfiguration
{
   public void ConfigureEndpoints(IEndpointRouteBuilder endpointRouteBuilder, IServiceProvider serviceProvider)
        {
               endpointRouteBuilder
                .AddSimpleRestResource<MyResourceClass>(serviceProvider, "my-resource")
                .ForGet(configuration => configuration.WithPolicies("READ")) // assign individual policies for each http verb
                .ForGetList(configuration => configuration.WithPolicies("READ"))
                .ForDelete(configuration => configuration.WithPolicies("WRITE"))
                .ForPost(configuration => configuration.WithPolicies("WRITE"))
                .ForPut(configuration => configuration.WithPolicies("WRITE"))
                .ForAll(configuration => configuration.WithPolicies("WRITE", "READ")); // or for all at once

            endpointRouteBuilder.MapGet("/hello", async () => "Hello World!").RequireAuthorization("READ");
        }
}

public class ExampleController : ControllerBase
{
    [HttpGet]
    [Authorize("READ")]
    public IActionResult Hello() => Ok();
}