Samhammer.Authentication.Abstractions 6.1.1

Samhammer.Authentication.Api

This provides a way to secure your api with keycloak jwt bearer authentication.

How to add this to your project:

• reference this nuget package: https://www.nuget.org/packages/Samhammer.Authentication.Api/

How to use:

Keycloak JWT Authentication

Add it to your api.

public void ConfigureServices(IServiceCollection services)
{
    services.AddJwtAuthentication()
        .AddKeycloak(Configuration);
}

public void Configure(IApplicationBuilder app)
{
    app.UseAuthentication();
    app.UseAuthorization();
}

Api calls requires auhorization header with an JWT token from keycloak.

POST https://myapi/action HTTP/1.1
Auhorization: Bearer JwtTokenContent

If you pass "IConfiguration" instead of "Action<ApiAuthOptions>" to "AddKeycloak" add the following to appsettings.json:

  "ApiAuthOptions": {
    "Issuer": "<<KeycloakTokenIssuerUrl>>",
    "ClientId": "<<ClientIdRepresentingYourApp>>",
    "NameClaim": "<<NameOfClaimWhichShouldBeSetToNameClaim>>"
  }

NameClaim is optional and default value is "preferred_username"

Guest Authentication

Add it to your api.

public void ConfigureServices(IServiceCollection services)
{
    services.AddAuthentication(GuestAuthenticationDefaults.AuthenticationScheme)
        .AddGuest(Configuration);
}

Api calls requires header guestid with an "Version 4 UUID".

POST https://myapi/action HTTP/1.1
guestid: 1c11792b-538f-4908-992d-6570bb268e60

If you pass "IConfiguration" instead of "Action<GuestAuthOptions>" to "AddGuest" you can can override the default settings in appsettings.json:

  "GuestAuthOptions": {
    "Enabled": true,
    "Name": "guest-[GuestID]",    
    "Role": "SomeGuestRole",
    "Validator": "[0-9a-fA-F]{8}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{4}\\-[0-9a-fA-F]{12}"
  }

Mixed Authentication

You can also setup both authentication types. In the example below jwt keycloak will be the default.

public void ConfigureServices(IServiceCollection services)
{
    services.AddJwtAuthentication()
        .AddKeycloak(Configuration)
        .AddGuest(Configuration);
}

You can setup your supported authentication types on each controller action per attribute.

[HttpPost]
[Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme + ", " + GuestAuthenticationDefaults.AuthenticationScheme)]
public async Task<IActionResult> ActionForBoth()
{}

[HttpPost]
[Authorize(GuestAuthenticationDefaults.AuthenticationScheme)]
public async Task<IActionResult> ActionForGuests()
{}

Samhammer.Authentication.Client

The library provides extension methods for authentication client. This library is using Duende.AccessTokenManagement under the hood

Currently, we have the ClientCredentialsConfigureExtensions class which provides an extension method for ClientCredentialsClient to add a client with options monitor support.

How to use in Program.cs

    builder.Services.AddClientCredentialsOptions<ApiAuthOptions>("defaultName", (client, authOptions) =>
    {
        client.TokenEndpoint = authOptions.AccessTokenUrl;
        client.ClientId = authOptions.ClientId;
        client.ClientSecret = authOptions.ClientSecret;
    });

Contribute

How to publish a nuget package

• Create a tag and let the github action do the publishing for you