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Authority Plugin System (LDAP, SAML, Custom Providers)

Module

Authority

Status

IMPLEMENTED

Description

Extensible authentication with pluggable identity providers loaded at startup, supporting multiple authentication methods including Standard (username/password), LDAP, OIDC, SAML, and a Unified adapter.

Implementation Details

  • Modules: src/Authority/StellaOps.Authority/StellaOps.Authority/Plugins/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugins.Abstractions/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Ldap/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Oidc/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Saml/, src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Unified/
  • Key Classes:
    • AuthorityPluginLoader (src/Authority/StellaOps.Authority/StellaOps.Authority/Plugins/AuthorityPluginLoader.cs) - discovers and loads plugin assemblies from disk at startup
    • AuthorityPluginRegistrationSummary (src/Authority/StellaOps.Authority/StellaOps.Authority/Plugins/AuthorityPluginRegistrationSummary.cs) - captures loaded plugins, errors, and capabilities
    • AuthorityPluginContracts (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugins.Abstractions/AuthorityPluginContracts.cs) - IAuthorityPlugin, IAuthorityPluginRegistrar interfaces
    • IdentityProviderContracts (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugins.Abstractions/IdentityProviderContracts.cs) - IAuthorityIdentityProviderPlugin, credential validation, claims enrichment
    • AuthoritySecretHasher (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugins.Abstractions/AuthoritySecretHasher.cs) - pluggable secret hashing
    • StandardIdentityProviderPlugin (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/StandardIdentityProviderPlugin.cs) - built-in username/password plugin
    • StandardPluginRegistrar (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/StandardPluginRegistrar.cs) - Standard plugin registration
    • StandardPluginBootstrapper (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/Bootstrap/StandardPluginBootstrapper.cs) - bootstraps initial admin user
    • StandardCredentialAuditLogger (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/Security/StandardCredentialAuditLogger.cs) - audit logging for credential operations
    • LdapIdentityProviderPlugin (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Ldap/LdapIdentityProviderPlugin.cs) - LDAP identity provider
    • OidcIdentityProviderPlugin (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Oidc/OidcIdentityProviderPlugin.cs) - OIDC identity provider
    • SamlIdentityProviderPlugin (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Saml/SamlIdentityProviderPlugin.cs) - SAML identity provider
    • AuthPluginAdapter (src/Authority/StellaOps.Authority/StellaOps.Authority.Plugin.Unified/AuthPluginAdapter.cs) - unified adapter for multiple plugin types
  • Interfaces: IAuthorityPlugin, IAuthorityPluginRegistrar, IAuthorityIdentityProviderPlugin (in AuthorityPluginContracts.cs, IdentityProviderContracts.cs)
  • Source: Feature matrix scan

E2E Test Plan

  • Start the Authority server with Standard and LDAP plugins and verify AuthorityPluginRegistrationSummary shows both loaded successfully
  • Authenticate via StandardIdentityProviderPlugin using username/password and verify a token is issued
  • Remove a plugin from the plugins directory, restart, and verify AuthorityPluginLoader reports it as missing without crashing
  • Register a custom plugin implementing IAuthorityIdentityProviderPlugin and verify it is discovered and callable
  • Verify each plugin's IAuthorityPluginRegistrar.Register is called with the correct AuthorityPluginRegistrationContext
  • Verify credential audit: authenticate via Standard plugin and verify StandardCredentialAuditLogger records the login event
  • Load OIDC and SAML plugins simultaneously and verify each handles its respective protocol flow independently