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Version: 0.5.x

JWT Bearer Authentication

Sharkable provides opinionated JWT Bearer authentication with minimal configuration.

Quick Start​

builder.Services.AddShark(opt =>
{
    opt.ConfigureJwt(
        authority: "https://your-issuer.com",
        audiences: ["your-api"],
        configure: jwt =>
        {
            // optional additional JwtBearerOptions configuration
        }
    );
});

Unified Error Response​

Authentication (401) and authorization (403) failures return the framework's standard unified result envelope:

{
  "statusCode": 401,
  "data": null,
  "errorMessage": "Authentication failed",
  "extra": null,
  "timeStamp": 1750934400000
}

Configuration Validation​

At startup, Sharkable validates that both authority and audiences are properly configured. If either is missing or invalid, a SharkConfigurationException is thrown before the application starts. See Configuration Validation for details.

Custom JWT Event Handlers​

Use the configure callback to hook into JWT events without losing Sharkable's unified error responses:

opt.ConfigureJwt("https://your-issuer.com", ["your-api"], configure: jwt =>
{
    jwt.Events.OnTokenValidated = ctx =>
    {
        var sub = ctx.Principal.FindFirst("sub")?.Value;
        var roles = ctx.Principal.FindAll("role");
        // Resolve user identity, populate HttpContext.Items, etc.
        return Task.CompletedTask;
    };
});

Sharkable's OnChallenge / OnForbidden handlers run AFTER yours and are never overwritten. If your handler already started the response (e.g. ctx.Response.WriteAsync()), Sharkable's handler gracefully skips.

Authorization Interceptor​

For fine-grained RBAC or claim-based access control, implement IAuthorizationInterceptor:

opt.AuthorizationInterceptorFactory = sp => new MyPermissionInterceptor();

See Authorization Interceptor for full usage.

Authorization Configuration​

Sharkable registers ASP.NET Core's authorization services by default (services.AddAuthorization()). This ensures that pipe.UseAuthorization() works wherever it's invoked. Two options control this behavior:

OptionTypeDefaultDescription
EnableAuthorizationbooltrueSet to false to skip authorization service registration entirely
ConfigureAuthorizationAction<AuthorizationOptions>?nullCallback to customize policies, default policy, fallback policy, etc.

Custom Authorization Policies​

builder.Services.AddShark(opt =>
{
    opt.ConfigureJwt("https://your-issuer.com", ["your-api"]);

    opt.ConfigureAuthorization = o =>
    {
        o.DefaultPolicy = new AuthorizationPolicyBuilder()
            .RequireAuthenticatedUser()
            .Build();

        o.AddPolicy("admin", p => p.RequireRole("admin"));
        o.AddPolicy("editor", p => p.RequireRole("editor", "admin"));
    };
});

Disable Authorization​

opt.EnableAuthorization = false;

Disabling authorization also suppresses pipe.UseAuthorization() in the middleware pipeline. Use this only when your application has no need for ASP.NET Core authorization at all.

Integration with API Key​

JWT and API Key authentication can coexist. When both are configured, either credential type is accepted.

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