Stratara.Identity.AspNetCore 4.0.2

Stratara.Identity.AspNetCore

Derived. The behaviour described here is specified under openspec/specs/. Those specifications are the source; this page explains and illustrates them.

License: MIT.

Channel-agnostic ASP.NET Core identity wiring for the Stratara stack. Provides the AddAspNetIdentity / AddAspNetIdentityWithSignInManager extension methods and an IStrataraSignInManager wrapper around the ASP.NET Core SignInManager. Channel-specific glue (Blazor Server's AuthenticationStateProvider, MAUI session-state forwarders, etc.) is the consumer's responsibility — Stratara intentionally stops at the ASP.NET-Core-generic surface to stay application-agnostic.

What's in the box

Lockout only ships with the sign-in manager. ApplyStrataraLockoutDefaults runs inside AddAspNetIdentityWithSignInManager only — the bare AddAspNetIdentity leaves ASP.NET Identity's own lockout defaults in place. If you wire sign-in yourself on top of AddAspNetIdentity, configure IdentityOptions.Lockout explicitly; otherwise password attempts are not throttled the way the rest of this package assumes. | Services/AspNetSignInManager<TUser> | Wraps SignInManager<TUser> + UserManager<TUser> and produces StrataraSignInResult with already-localized failure messages | | Services/IdentityNoOpEmailSender<TUser> | Development-time email sender that drops every email (Task.CompletedTask); replace in production | | Resources/IdentityResources | Resource-anchor for sign-in failure messages. English default ships in IdentityResources.resx; IdentityResources.de.resx provides German overrides. AddAspNetIdentityWithSignInManager calls AddLocalization() so IStringLocalizer<IdentityResources> resolves automatically. | | DependencyInjection/MembershipClaimsServiceCollectionExtensions + Services/MembershipClaims* | Sign-in tenant-claim bridge: AddMembershipTenantClaim<TUser>() (stamp stratara:tenant_id at issuance) and AddMembershipTenantClaimsTransformation() (resolve live per request) | | Authorization/* + DependencyInjection/PermissionPolicyServiceCollectionExtensions | AddStrataraPermissionPolicies() — every catalog permission becomes an on-demand [Authorize("...")] policy backed by IPermissionResolver | | Authentication/ApiKey* + DependencyInjection/ApiKeyAuthenticationExtensions | AddStrataraApiKey() (X-Api-Key scheme over IApiKeyStore) and AddStrataraAuthSchemeSelector() (route API-key vs. Bearer vs. cookie by request shape) | | Authentication/Stratara{OpenIdConnect,JwtBearer}Options + DependencyInjection/OpenIdConnectAuthenticationExtensions | AddStrataraOpenIdConnect(configuration) (interactive external login) and AddStrataraJwtBearer(configuration) (API access-token validation, multi-issuer by iss) | | Services/ExternalLoginProvisioningService<TUser> + DependencyInjection/ExternalLoginProvisioningExtensions | AddStrataraExternalLoginProvisioning<TUser>() — hardened JIT create/link of local accounts on first external sign-in (see below) |

Localization

AspNetSignInManager resolves its four user-facing failure messages (Identity.SignIn.Lockout, Identity.SignIn.InvalidCredentials, Identity.SignIn.InvalidTwoFactor, Identity.SignIn.InvalidRecoveryCode) via IStringLocalizer<IdentityResources>. A "not allowed" sign-in deliberately maps onto the InvalidCredentials message rather than getting its own, to avoid confirming that an account exists. Languages out of the box: English (default) and German (de). To add another culture, ship a satellite .resx (e.g. IdentityResources.fr.resx) in your own assembly and register a chained IStringLocalizer<IdentityResources> if needed. Selection follows CultureInfo.CurrentUICulture — wire up app.UseRequestLocalization(...) to map this from the request.

Quick start

// Channel-agnostic ASP.NET Core host (MVC, Razor Pages, Minimal API, ...):
builder.AddAspNetIdentityWithSignInManager<ApplicationUser, IdentityDbContext>();

// Or for a host without sign-in manager (e.g. a worker that only needs identity stores):
builder.AddAspNetIdentity<ApplicationUser, IdentityDbContext>();

For Blazor Server hosts, additionally register your own IStrataraAuthenticationStateProvider implementation (and the AuthenticationStateProvider forwarder). Stratara does not ship a Blazor-specific provider — the previous BlazorAuthenticationStateProvider lived here in 1.x but moved out in v2.0.0 to keep this package application-agnostic.

External login (OpenID Connect) + JIT provisioning

Add external identity providers as ordinary authentication schemes and provision local accounts on first sign-in:

builder.Services
    .AddAuthentication(StrataraAuthSchemeSelectorOptions.SchemeName)
    .AddCookie(IdentityConstants.ApplicationScheme)
    .AddStrataraOpenIdConnect(builder.Configuration)   // interactive "log in with <provider>"
    .AddStrataraJwtBearer(builder.Configuration)        // API access-token validation (iss-routed)
    .AddStrataraAuthSchemeSelector();                   // route Bearer vs. cookie per request

builder.Services.AddStrataraExternalLoginProvisioning<ApplicationUser>();

AddStrataraOpenIdConnect binds Identity:OpenIdConnect (Authority, ClientId, ClientSecret, Scopes) and AddStrataraJwtBearer binds Identity:JwtBearer (Authority, Audience, ValidIssuers). Both key the principal on the issuer sub, never on email — Entra, Keycloak, and generic OIDC differ only in configuration.

ExternalLoginProvisioningService<TUser> creates or links the local account on a first external sign-in with the account-takeover defenses on by default: it links on the issuer's (provider, sub); auto-links to a pre-existing account only when the email is verified by the provider (email_verified/xms_edov) and already confirmed locally — otherwise it returns RequiresInteractiveLinking and refuses to merge; honors an optional invitation gate and an AutoProvision switch; and fails closed. Call it from your sign-in callback (for example the OpenID Connect OnTicketReceived event). The Stratara.Sample.Identity sample shows the full wiring.

Dependencies

• Stratara.Identity.Core — channel-agnostic abstractions (IStrataraSignInManager, IStrataraAuthenticationStateProvider) + shared model records.
• Stratara.Shared — multitenancy + session-context types.
• Microsoft.AspNetCore.App — shared framework reference for SignInManager, IEmailSender<TUser>, etc.
• Microsoft.AspNetCore.Identity.EntityFrameworkCore — ASP.NET Identity stores.
• Microsoft.AspNetCore.Authentication.OpenIdConnect, Microsoft.AspNetCore.Authentication.JwtBearer — external-login OIDC + API bearer-token schemes.
• Microsoft.IdentityModel.JsonWebTokens, System.IdentityModel.Tokens.Jwt — JWT helpers for token-based flows.