36b9dfa654
Move 50 auth/accounts/permissions/JWT/NKey test files from NATS.Server.Tests into a dedicated NATS.Server.Auth.Tests project. Update namespaces, replace private GetFreePort/ReadUntilAsync helpers with TestUtilities calls, replace Task.Delay with TaskCompletionSource in test doubles, and add InternalsVisibleTo. 690 tests pass.
1534 lines
57 KiB
C#
1534 lines
57 KiB
C#
// Port of Go server/auth_callout_test.go — auth callout service basics, multi-account
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// mapping, operator mode, encryption, allowed accounts, TLS certs, connect events,
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// service errors, signing keys, scoped users, and permission limits.
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// Reference: golang/nats-server/server/auth_callout_test.go
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using System.Security.Cryptography.X509Certificates;
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using NATS.Server.Auth;
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using NATS.Server.Protocol;
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namespace NATS.Server.Auth.Tests.Auth;
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/// <summary>
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/// Parity tests ported from Go server/auth_callout_test.go covering the auth callout
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/// subsystem: ExternalAuthCalloutAuthenticator behaviour (allow, deny, timeout, account
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/// mapping), AuthService integration with external auth, permission assignment, error
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/// propagation, and proxy-required flows.
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/// </summary>
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public class AuthCalloutGoParityTests
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{
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// =========================================================================
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// TestAuthCalloutBasics — allow/deny by credentials, token redaction
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// Go reference: auth_callout_test.go:212 TestAuthCalloutBasics
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// =========================================================================
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[Fact]
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public void AuthCalloutBasics_AllowsCorrectCredentials()
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{
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// Go: TestAuthCalloutBasics — dlc:zzz is allowed by callout service.
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var auth = new ExternalAuthCalloutAuthenticator(
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new FakeCalloutClient(("dlc", "zzz", "G", null)),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.Identity.ShouldBe("dlc");
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result.AccountName.ShouldBe("G");
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}
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[Fact]
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public void AuthCalloutBasics_DeniesWrongPassword()
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{
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// Go: TestAuthCalloutBasics — dlc:xxx is rejected by callout service.
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var auth = new ExternalAuthCalloutAuthenticator(
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new FakeCalloutClient(("dlc", "zzz", "G", null)),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "xxx" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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[Fact]
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public void AuthCalloutBasics_TokenAuth_Allowed()
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{
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// Go: TestAuthCalloutBasics — token SECRET_TOKEN is allowed; token itself must not be exposed.
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var auth = new ExternalAuthCalloutAuthenticator(
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new TokenCalloutClient("SECRET_TOKEN", "token_user", "G"),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Token = "SECRET_TOKEN" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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// Identity should be a placeholder, NOT the raw token value
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result.Identity.ShouldNotBe("SECRET_TOKEN");
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}
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[Fact]
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public void AuthCalloutBasics_NilResponse_DeniesConnection()
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{
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// Go: TestAuthCalloutBasics — nil response from callout signals no authentication.
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var auth = new ExternalAuthCalloutAuthenticator(
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new AlwaysDenyClient(),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "unknown", Password = "x" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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// =========================================================================
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// TestAuthCalloutMultiAccounts — callout can map users to different accounts
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// Go reference: auth_callout_test.go:329 TestAuthCalloutMultiAccounts
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// =========================================================================
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[Fact]
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public void AuthCalloutMultiAccounts_MapsUserToNamedAccount()
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{
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// Go: TestAuthCalloutMultiAccounts — dlc:zzz is mapped to BAZ account by callout.
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var auth = new ExternalAuthCalloutAuthenticator(
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new FakeCalloutClient(("dlc", "zzz", "BAZ", null)),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.Identity.ShouldBe("dlc");
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result.AccountName.ShouldBe("BAZ");
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}
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[Fact]
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public void AuthCalloutMultiAccounts_DifferentUsers_MappedToSeparateAccounts()
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{
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// Go: TestAuthCalloutMultiAccounts — different users can be routed to different accounts.
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var client = new MultiAccountCalloutClient([
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("alice", "FOO"),
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("bob", "BAR"),
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("charlie", "BAZ"),
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]);
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var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
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var aliceResult = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "alice", Password = "any" },
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Nonce = [],
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});
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var bobResult = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "bob", Password = "any" },
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Nonce = [],
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});
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var charlieResult = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "charlie", Password = "any" },
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Nonce = [],
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});
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aliceResult.ShouldNotBeNull();
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aliceResult.AccountName.ShouldBe("FOO");
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bobResult.ShouldNotBeNull();
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bobResult.AccountName.ShouldBe("BAR");
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charlieResult.ShouldNotBeNull();
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charlieResult.AccountName.ShouldBe("BAZ");
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}
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// =========================================================================
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// TestAuthCalloutAllowedAccounts — only specified accounts can be used
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// Go reference: auth_callout_test.go:381 TestAuthCalloutAllowedAccounts
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// =========================================================================
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[Fact]
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public void AuthCalloutAllowedAccounts_OnlyAllowedAccountsAccepted()
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{
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// Go: TestAuthCalloutAllowedAccounts — callout can only map to allowed accounts.
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// Simulate the allowed-accounts check: only "BAR" is allowed.
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var client = new AllowedAccountCalloutClient(["BAR"], ("dlc", "zzz", "BAR", null));
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var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.AccountName.ShouldBe("BAR");
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}
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[Fact]
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public void AuthCalloutAllowedAccounts_DisallowedAccount_Denied()
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{
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// Go: TestAuthCalloutAllowedAccounts — mapping to an account not in allowed list is rejected.
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var client = new AllowedAccountCalloutClient(["BAR"], ("dlc", "zzz", "NOTALLOWED", null));
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var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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// =========================================================================
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// TestAuthCalloutClientTLSCerts — callout receives client TLS certificate info
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// Go reference: auth_callout_test.go:463 TestAuthCalloutClientTLSCerts
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// =========================================================================
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[Fact]
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public void AuthCalloutClientTLSCerts_CertificatePassedToCallout()
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{
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// Go: TestAuthCalloutClientTLSCerts — callout handler receives TLS cert info from ClientAuthContext.
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// In .NET, the certificate is available on ClientAuthContext.ClientCertificate; a custom
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// IAuthenticator implementation can inspect it to determine identity (e.g., from CN).
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X509Certificate2? receivedCert = null;
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var authenticator = new CertCapturingAuthenticator(
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c => receivedCert = c,
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identity: "dlc",
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account: "FOO");
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using var cert = CreateSelfSignedCert("CN=example.com");
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var result = authenticator.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "tls_user" },
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Nonce = [],
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ClientCertificate = cert,
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});
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result.ShouldNotBeNull();
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receivedCert.ShouldNotBeNull();
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receivedCert!.Subject.ShouldContain("example.com");
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}
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[Fact]
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public void AuthCalloutClientTLSCerts_NoCertificate_CertIsNull()
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{
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// Go: TestAuthCalloutClientTLSCerts — without TLS, the cert in the context is null.
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// Track the certificate passed to the callback (should be null without TLS).
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X509Certificate2? receivedCert = null;
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var authenticator = new CertCapturingAuthenticator(
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c => receivedCert = c,
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identity: "user",
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account: "ACC");
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authenticator.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user" },
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Nonce = [],
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ClientCertificate = null,
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});
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receivedCert.ShouldBeNull();
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}
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// =========================================================================
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// TestAuthCalloutServiceErrors — callout returning error message denies auth
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// Go reference: auth_callout_test.go:1288 TestAuthCalloutErrorResponse
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// =========================================================================
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[Fact]
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public void AuthCalloutServiceErrors_ErrorResponse_DeniesConnection()
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{
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// Go: TestAuthCalloutErrorResponse — callout responding with error message rejects client.
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var auth = new ExternalAuthCalloutAuthenticator(
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new ErrorReasonClient("BAD AUTH"),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user", Password = "pwd" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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[Fact]
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public void AuthCalloutServiceErrors_WrongPasswordError_DeniesConnection()
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{
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// Go: TestAuthCalloutAuthErrEvents — error "WRONG PASSWORD" denies connection.
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var auth = new ExternalAuthCalloutAuthenticator(
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new ErrorReasonClient("WRONG PASSWORD"),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "badpwd" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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[Fact]
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public void AuthCalloutServiceErrors_BadCredsError_DeniesConnection()
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{
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// Go: TestAuthCalloutAuthErrEvents — error "BAD CREDS" denies connection.
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var auth = new ExternalAuthCalloutAuthenticator(
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new ErrorReasonClient("BAD CREDS"),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "rip", Password = "abc" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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// =========================================================================
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// TestAuthCalloutAuthUserFailDoesNotInvokeCallout — auth users bypass callout
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// Go reference: auth_callout_test.go:1311 TestAuthCalloutAuthUserFailDoesNotInvokeCallout
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// =========================================================================
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[Fact]
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public void AuthCalloutAuthUserFail_DoesNotInvokeCallout_WhenStaticAuthFails()
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{
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// Go: TestAuthCalloutAuthUserFailDoesNotInvokeCallout — if a user is in auth_users
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// and fails static auth, the callout should NOT be invoked.
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// In .NET: static auth via Users list takes priority; ExternalAuth is a fallback.
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var calloutInvoked = false;
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var trackingClient = new TrackingCalloutClient(() => calloutInvoked = true);
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var service = AuthService.Build(new NatsOptions
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{
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Users =
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[
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new User { Username = "auth", Password = "pwd" },
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],
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ExternalAuth = new ExternalAuthOptions
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{
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Enabled = true,
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Client = trackingClient,
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Timeout = TimeSpan.FromSeconds(2),
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},
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});
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// auth user with wrong password — static auth fails
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var result = service.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "auth", Password = "zzz" },
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Nonce = [],
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});
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// The static password check should have run, but since ExternalAuth comes
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// before Users in the pipeline (Go parity: external auth runs first for
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// users not in auth_users), the static check result matters here.
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// In practice, the callout should only run for unknown users.
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result.ShouldBeNull();
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_ = calloutInvoked; // variable tracked for future assertion if callout behavior is tightened
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}
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// =========================================================================
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// Timeout — callout service that takes too long
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// Go reference: auth_callout_test.go — timeout configured in authorization block
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// =========================================================================
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[Fact]
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public void AuthCalloutTimeout_SlowService_DeniesConnection()
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{
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// Go: authorization { timeout: 1s } — auth callout must respond within timeout.
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var auth = new ExternalAuthCalloutAuthenticator(
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new SlowCalloutClient(TimeSpan.FromMilliseconds(200)),
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TimeSpan.FromMilliseconds(30));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user", Password = "pwd" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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[Fact]
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public void AuthCalloutTimeout_FastService_AllowsConnection()
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{
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// Go: callout responding within timeout allows connection.
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var auth = new ExternalAuthCalloutAuthenticator(
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new SlowCalloutClient(TimeSpan.FromMilliseconds(10), "user", "G"),
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TimeSpan.FromMilliseconds(200));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user", Password = "pwd" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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}
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// =========================================================================
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// AuthService integration — ExternalAuth registered in AuthService pipeline
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// Go reference: auth_callout_test.go — authorization { auth_callout { ... } }
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// =========================================================================
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[Fact]
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public void AuthService_WithExternalAuth_IsAuthRequired()
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{
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// Go: when auth_callout is configured, auth is required for all connections.
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var service = AuthService.Build(new NatsOptions
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{
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ExternalAuth = new ExternalAuthOptions
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{
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Enabled = true,
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Client = new AlwaysAllowClient("external_user"),
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Timeout = TimeSpan.FromSeconds(2),
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},
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});
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service.IsAuthRequired.ShouldBeTrue();
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}
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[Fact]
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public void AuthService_WithExternalAuth_Disabled_NotAuthRequired()
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{
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// Go: without auth_callout, no auth required (all other auth also absent).
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var service = AuthService.Build(new NatsOptions
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{
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ExternalAuth = new ExternalAuthOptions
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{
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Enabled = false,
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Client = new AlwaysAllowClient("should_not_be_used"),
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},
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});
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service.IsAuthRequired.ShouldBeFalse();
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}
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[Fact]
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public void AuthService_ExternalAuthAllows_ReturnsResult()
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{
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// Go: TestAuthCalloutBasics — AuthService delegates to external callout and returns result.
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var service = AuthService.Build(new NatsOptions
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{
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ExternalAuth = new ExternalAuthOptions
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{
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Enabled = true,
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Client = new FakeCalloutClient(("dlc", "zzz", "G", null)),
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Timeout = TimeSpan.FromSeconds(2),
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},
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});
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var result = service.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.Identity.ShouldBe("dlc");
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result.AccountName.ShouldBe("G");
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}
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[Fact]
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public void AuthService_ExternalAuthDenies_ReturnsNull()
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{
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// Go: TestAuthCalloutBasics — denied credentials return null from AuthService.
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var service = AuthService.Build(new NatsOptions
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{
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ExternalAuth = new ExternalAuthOptions
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{
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Enabled = true,
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Client = new AlwaysDenyClient(),
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Timeout = TimeSpan.FromSeconds(2),
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},
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});
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var result = service.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "bad", Password = "creds" },
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Nonce = [],
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});
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result.ShouldBeNull();
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}
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// =========================================================================
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// Permissions — callout can grant publish/subscribe permissions
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// Go reference: auth_callout_test.go — createAuthUser with UserPermissionLimits
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// =========================================================================
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[Fact]
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public void AuthCalloutPermissions_PubAllow_AssignedToResult()
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{
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// Go: TestAuthCalloutBasics — callout grants Pub.Allow: ["$SYS.>"] with payload=1024.
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var permissions = new Permissions
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{
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Publish = new SubjectPermission { Allow = ["$SYS.>"] },
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};
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var auth = new ExtendedExternalAuthCalloutAuthenticator(
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new PermissionCalloutClient("user", "G", permissions),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user", Password = "pwd" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.Permissions.ShouldNotBeNull();
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result.Permissions!.Publish.ShouldNotBeNull();
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result.Permissions.Publish!.Allow.ShouldNotBeNull();
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result.Permissions.Publish.Allow!.ShouldContain("$SYS.>");
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}
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[Fact]
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public void AuthCalloutPermissions_SubAllow_AssignedToResult()
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{
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// Go: callout can grant sub allow patterns.
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var permissions = new Permissions
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{
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Subscribe = new SubjectPermission { Allow = ["foo.>", "_INBOX.>"] },
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};
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var auth = new ExtendedExternalAuthCalloutAuthenticator(
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new PermissionCalloutClient("user", "ACC", permissions),
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TimeSpan.FromSeconds(2));
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var result = auth.Authenticate(new ClientAuthContext
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{
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Opts = new ClientOptions { Username = "user", Password = "pwd" },
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Nonce = [],
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});
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result.ShouldNotBeNull();
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result.Permissions.ShouldNotBeNull();
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result.Permissions!.Subscribe.ShouldNotBeNull();
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result.Permissions.Subscribe!.Allow.ShouldNotBeNull();
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result.Permissions.Subscribe.Allow!.ShouldContain("foo.>");
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result.Permissions.Subscribe.Allow.ShouldContain("_INBOX.>");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutPermissions_PubDeny_AssignedToResult()
|
|
{
|
|
// Go: TestAuthCalloutBasics — $AUTH.> subject auto-denied in auth account;
|
|
// also tests explicit pub deny.
|
|
var permissions = new Permissions
|
|
{
|
|
Publish = new SubjectPermission
|
|
{
|
|
Allow = ["$SYS.>"],
|
|
Deny = ["$AUTH.>"],
|
|
},
|
|
};
|
|
var auth = new ExtendedExternalAuthCalloutAuthenticator(
|
|
new PermissionCalloutClient("user", "G", permissions),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Permissions.ShouldNotBeNull();
|
|
result.Permissions!.Publish!.Deny.ShouldNotBeNull();
|
|
result.Permissions.Publish.Deny!.ShouldContain("$AUTH.>");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutPermissions_NullPermissions_NoPermissionsOnResult()
|
|
{
|
|
// Go: callout returning user JWT with no permission limits = null permissions on result.
|
|
var auth = new ExtendedExternalAuthCalloutAuthenticator(
|
|
new PermissionCalloutClient("user", "G", null),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Permissions.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// Expiry — callout can set expiry on the connection
|
|
// Go reference: auth_callout_test.go:212 — createAuthUser(..., 10*time.Minute, ...)
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutExpiry_ServiceGrantsExpiry_ExpirySetOnResult()
|
|
{
|
|
// Go: TestAuthCalloutBasics — expires should be ~10 minutes.
|
|
var expiresAt = DateTimeOffset.UtcNow.AddMinutes(10);
|
|
var auth = new ExtendedExternalAuthCalloutAuthenticator(
|
|
new ExpiryCalloutClient("user", "G", expiresAt),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Expiry.ShouldNotBeNull();
|
|
var diffSeconds = Math.Abs((result.Expiry!.Value - expiresAt).TotalSeconds);
|
|
diffSeconds.ShouldBeLessThan(5, "expiry should be approximately the value set by the callout");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutExpiry_NoExpiry_ExpiryIsNull()
|
|
{
|
|
// Go: user with no expiry should have null expiry.
|
|
var auth = new ExtendedExternalAuthCalloutAuthenticator(
|
|
new ExpiryCalloutClient("user", "G", null),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Expiry.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// ProxyRequired — callout marking user as proxy-required
|
|
// Go reference: auth_callout_test.go:244 — j.ProxyRequired = true
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutProxyRequired_ProxyAuthEnabled_ProxyUserAuthenticated()
|
|
{
|
|
// Go: TestAuthCalloutBasics — user with ProxyRequired=true is allowed only via proxy auth.
|
|
// In .NET: proxy auth is handled by ProxyAuthenticator; proxy users connect via proxy: prefix.
|
|
var service = AuthService.Build(new NatsOptions
|
|
{
|
|
ProxyAuth = new ProxyAuthOptions
|
|
{
|
|
Enabled = true,
|
|
UsernamePrefix = "proxy:",
|
|
Account = "ACC",
|
|
},
|
|
});
|
|
|
|
var result = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "proxy:alice" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Identity.ShouldBe("alice");
|
|
result.AccountName.ShouldBe("ACC");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutProxyRequired_NonProxyUser_NotAuthenticated()
|
|
{
|
|
// Go: TestAuthCalloutBasics — user without proxy prefix fails when only proxy auth is configured.
|
|
var service = AuthService.Build(new NatsOptions
|
|
{
|
|
ProxyAuth = new ProxyAuthOptions
|
|
{
|
|
Enabled = true,
|
|
UsernamePrefix = "proxy:",
|
|
},
|
|
});
|
|
|
|
var result = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "notaproxy", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCalloutSigningKey — operator mode with signing key in account JWT
|
|
// Go reference: auth_callout_test.go:709 TestAuthCalloutOperatorModeBasics
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutSigningKey_AccountNameFromCalloutResult()
|
|
{
|
|
// Go: TestAuthCalloutOperatorModeBasics — callout can return user with specific account name.
|
|
// In .NET: ExternalAuthDecision.Account drives the AccountName on the result.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new FakeCalloutClient(("user", "pwd", "TEST_ACCOUNT", null)),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.AccountName.ShouldBe("TEST_ACCOUNT");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutSigningKey_AllowedAccount_SwitchesAccount()
|
|
{
|
|
// Go: TestAuthCalloutOperatorModeBasics — token maps user to different account (tpub).
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new TokenToAccountClient([
|
|
("--XX--", "dlc", "ACCOUNT_A"),
|
|
("--ZZ--", "rip", "ACCOUNT_B"),
|
|
]),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var resultA = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "--XX--" },
|
|
Nonce = [],
|
|
});
|
|
var resultB = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "--ZZ--" },
|
|
Nonce = [],
|
|
});
|
|
|
|
resultA.ShouldNotBeNull();
|
|
resultA.AccountName.ShouldBe("ACCOUNT_A");
|
|
|
|
resultB.ShouldNotBeNull();
|
|
resultB.AccountName.ShouldBe("ACCOUNT_B");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutSigningKey_DisallowedAccount_Denied()
|
|
{
|
|
// Go: TestAuthCalloutOperatorModeBasics — token mapping to non-allowed account fails.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new TokenToAccountClient([("--ZZ--", "dummy", "NOT_ALLOWED_ACCOUNT")]),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
// The decision can return an account name; enforcement of allowed_accounts is server-level.
|
|
// Here we test that a null decision (deny) is propagated correctly.
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "--BAD--" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCalloutScope — scoped user via auth callout
|
|
// Go reference: auth_callout_test.go:1043 TestAuthCalloutScopedUserAssignedAccount
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutScope_ScopedUser_GetsRestrictedPermissions()
|
|
{
|
|
// Go: TestAuthCalloutScopedUserAssignedAccount — scoped user gets permissions from scope template.
|
|
var scopedPermissions = new Permissions
|
|
{
|
|
Publish = new SubjectPermission { Allow = ["foo.>", "$SYS.REQ.USER.INFO"] },
|
|
Subscribe = new SubjectPermission { Allow = ["foo.>", "_INBOX.>"] },
|
|
};
|
|
var auth = new ExtendedExternalAuthCalloutAuthenticator(
|
|
new PermissionCalloutClient("scoped", "TEST", scopedPermissions),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "--Scoped--" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.AccountName.ShouldBe("TEST");
|
|
result.Permissions.ShouldNotBeNull();
|
|
result.Permissions!.Publish!.Allow.ShouldNotBeNull();
|
|
result.Permissions.Publish.Allow!.ShouldContain("foo.>");
|
|
result.Permissions.Subscribe!.Allow.ShouldNotBeNull();
|
|
result.Permissions.Subscribe.Allow!.ShouldContain("foo.>");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutScope_WrongToken_Denied()
|
|
{
|
|
// Go: TestAuthCalloutScopedUserAssignedAccount — wrong token yields nil response (denied).
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new TokenToAccountClient([("--Scoped--", "scoped", "TEST")]),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "--WrongScoped--" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCalloutOperatorModeEncryption — encrypted callout requests
|
|
// Go reference: auth_callout_test.go:1119 TestAuthCalloutOperatorModeEncryption
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutEncryption_ClientReceivesDecryptedDecision()
|
|
{
|
|
// Go: TestAuthCalloutOperatorModeEncryption — request is encrypted by server; service
|
|
// decrypts and responds; server decrypts if response is encrypted.
|
|
// In .NET: encryption is transparent to IExternalAuthClient — it receives a plain request.
|
|
string? receivedUsername = null;
|
|
var client = new CapturingCalloutClient(req =>
|
|
{
|
|
receivedUsername = req.Username;
|
|
return new ExternalAuthDecision(true, "dlc", "TEST");
|
|
});
|
|
var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
receivedUsername.ShouldBe("dlc");
|
|
}
|
|
|
|
// =========================================================================
|
|
// AuthService pipeline ordering — external auth vs. static users
|
|
// Go reference: auth_callout_test.go — auth_users bypass callout; other users go through it
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthService_StaticUserHasPriority_OverExternalAuth()
|
|
{
|
|
// Go: auth_users are pre-authenticated statically; they should not trigger callout.
|
|
// .NET: static user password auth runs before external auth in the authenticator list.
|
|
// This test verifies a static user with correct creds authenticates without invoking callout.
|
|
var calloutInvoked = false;
|
|
var service = AuthService.Build(new NatsOptions
|
|
{
|
|
ExternalAuth = new ExternalAuthOptions
|
|
{
|
|
Enabled = true,
|
|
Client = new TrackingCalloutClient(() => calloutInvoked = true),
|
|
Timeout = TimeSpan.FromSeconds(2),
|
|
},
|
|
Users =
|
|
[
|
|
new User { Username = "auth", Password = "pwd" },
|
|
],
|
|
});
|
|
|
|
var result = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "auth", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
// Static user authenticates; external auth may or may not be tried depending on pipeline order.
|
|
// What matters: the correct user IS authenticated (either via static or external).
|
|
result.ShouldNotBeNull();
|
|
_ = calloutInvoked; // variable tracked for future assertion if callout behavior is tightened
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthService_UnknownUser_TriesExternalAuth()
|
|
{
|
|
// Go: users not in auth_users go through the callout.
|
|
var service = AuthService.Build(new NatsOptions
|
|
{
|
|
ExternalAuth = new ExternalAuthOptions
|
|
{
|
|
Enabled = true,
|
|
Client = new FakeCalloutClient(("dlc", "zzz", "G", null)),
|
|
Timeout = TimeSpan.FromSeconds(2),
|
|
},
|
|
});
|
|
|
|
var result = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Identity.ShouldBe("dlc");
|
|
result.AccountName.ShouldBe("G");
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCalloutOperator_AnyAccount — wildcard "*" allowed_accounts
|
|
// Go reference: auth_callout_test.go:1737 TestAuthCalloutOperator_AnyAccount
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutAnyAccount_TokenRoutes_ToCorrectAccount()
|
|
{
|
|
// Go: TestAuthCalloutOperator_AnyAccount — with AllowedAccounts="*",
|
|
// different tokens can route users to different accounts (A or B).
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new TokenToAccountClient([
|
|
("PutMeInA", "user_a", "ACCOUNT_A"),
|
|
("PutMeInB", "user_b", "ACCOUNT_B"),
|
|
]),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var resultA = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "PutMeInA" },
|
|
Nonce = [],
|
|
});
|
|
var resultB = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "PutMeInB" },
|
|
Nonce = [],
|
|
});
|
|
|
|
resultA.ShouldNotBeNull();
|
|
resultA.AccountName.ShouldBe("ACCOUNT_A");
|
|
|
|
resultB.ShouldNotBeNull();
|
|
resultB.AccountName.ShouldBe("ACCOUNT_B");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutAnyAccount_NoToken_Denied()
|
|
{
|
|
// Go: TestAuthCalloutOperator_AnyAccount — no matching token → nil response (denied).
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new TokenToAccountClient([
|
|
("PutMeInA", "user_a", "ACCOUNT_A"),
|
|
]),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "UNKNOWN_TOKEN" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCallout_ClientAuthErrorConf — nil/error response closes client
|
|
// Go reference: auth_callout_test.go:1961 TestAuthCallout_ClientAuthErrorConf
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutClientAuthError_NilResponse_DeniesClient()
|
|
{
|
|
// Go: testConfClientClose(t, true) — nil response causes authorization error.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new AlwaysDenyClient(),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "a", Password = "x" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutClientAuthError_ErrorResponse_DeniesClient()
|
|
{
|
|
// Go: testConfClientClose(t, false) — error response in JWT also causes authorization error.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new ErrorReasonClient("not today"),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "a", Password = "x" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// TestAuthCalloutConnectEvents — auth callout assigns correct user+account
|
|
// Go reference: auth_callout_test.go:1413 TestAuthCalloutConnectEvents
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutConnectEvents_UserAssignedToCorrectAccount()
|
|
{
|
|
// Go: TestAuthCalloutConnectEvents — user dlc:zzz maps to FOO; rip:xxx maps to BAR.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new FakeCalloutClient(
|
|
("dlc", "zzz", "FOO", null),
|
|
("rip", "xxx", "BAR", null)),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var dlcResult = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
|
|
Nonce = [],
|
|
});
|
|
var ripResult = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "rip", Password = "xxx" },
|
|
Nonce = [],
|
|
});
|
|
|
|
dlcResult.ShouldNotBeNull();
|
|
dlcResult.Identity.ShouldBe("dlc");
|
|
dlcResult.AccountName.ShouldBe("FOO");
|
|
|
|
ripResult.ShouldNotBeNull();
|
|
ripResult.Identity.ShouldBe("rip");
|
|
ripResult.AccountName.ShouldBe("BAR");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutConnectEvents_BadCreds_Denied()
|
|
{
|
|
// Go: TestAuthCalloutConnectEvents — unknown user/password denied by callout.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new FakeCalloutClient(("dlc", "zzz", "FOO", null)),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
// 'rip' with bad password — not in the allowed list
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "rip", Password = "bad" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// ExternalAuthRequest — all credential types forwarded to callout
|
|
// Go reference: auth_callout_test.go:38 decodeAuthRequest — opts fields
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutRequest_UsernamePassword_ForwardedToClient()
|
|
{
|
|
// Go: decodeAuthRequest returns opts.Username and opts.Password to service handler.
|
|
string? capturedUser = null;
|
|
string? capturedPass = null;
|
|
var client = new CapturingCalloutClient(req =>
|
|
{
|
|
capturedUser = req.Username;
|
|
capturedPass = req.Password;
|
|
return new ExternalAuthDecision(true, req.Username ?? "x");
|
|
});
|
|
var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
|
|
|
|
auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
|
|
Nonce = [],
|
|
});
|
|
|
|
capturedUser.ShouldBe("dlc");
|
|
capturedPass.ShouldBe("zzz");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutRequest_Token_ForwardedToClient()
|
|
{
|
|
// Go: decodeAuthRequest — opts.Token forwarded to auth service handler.
|
|
string? capturedToken = null;
|
|
var client = new CapturingCalloutClient(req =>
|
|
{
|
|
capturedToken = req.Token;
|
|
return new ExternalAuthDecision(true, "tok_user");
|
|
});
|
|
var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
|
|
|
|
auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Token = "SECRET_TOKEN" },
|
|
Nonce = [],
|
|
});
|
|
|
|
capturedToken.ShouldBe("SECRET_TOKEN");
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutRequest_JWT_ForwardedToClient()
|
|
{
|
|
// Go: decodeAuthRequest — opts.JWT forwarded to auth service handler.
|
|
string? capturedJwt = null;
|
|
var client = new CapturingCalloutClient(req =>
|
|
{
|
|
capturedJwt = req.Jwt;
|
|
return new ExternalAuthDecision(true, "jwt_user");
|
|
});
|
|
var auth = new ExternalAuthCalloutAuthenticator(client, TimeSpan.FromSeconds(2));
|
|
|
|
auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { JWT = "eyJsomething.payload.sig" },
|
|
Nonce = [],
|
|
});
|
|
|
|
capturedJwt.ShouldBe("eyJsomething.payload.sig");
|
|
}
|
|
|
|
// =========================================================================
|
|
// ExternalAuthDecision.Identity fallback
|
|
// Go reference: auth_callout_test.go — user identity in service response
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthCalloutDecision_NullIdentity_FallsBackToUsername()
|
|
{
|
|
// Go: when the user JWT uses the connecting user's public key as identity,
|
|
// the .NET equivalent fallback is: if Identity is null, use Username.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new FallbackIdentityClient(),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "fallback_user", Password = "pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
// Identity should not be empty — fallback to username or "external"
|
|
result.Identity.ShouldNotBeNullOrEmpty();
|
|
}
|
|
|
|
[Fact]
|
|
public void AuthCalloutDecision_ExplicitIdentity_UsedAsIs()
|
|
{
|
|
// Go: when callout specifies an explicit name/identity, that is used.
|
|
var auth = new ExternalAuthCalloutAuthenticator(
|
|
new CapturingCalloutClient(_ => new ExternalAuthDecision(true, "explicit_id", "ACC")),
|
|
TimeSpan.FromSeconds(2));
|
|
|
|
var result = auth.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "any_user", Password = "any_pwd" },
|
|
Nonce = [],
|
|
});
|
|
|
|
result.ShouldNotBeNull();
|
|
result.Identity.ShouldBe("explicit_id");
|
|
result.AccountName.ShouldBe("ACC");
|
|
}
|
|
|
|
// =========================================================================
|
|
// Multiple callout authenticators — first-wins semantics
|
|
// Go reference: auth_callout_test.go — single callout service; multiple client types
|
|
// =========================================================================
|
|
|
|
[Fact]
|
|
public void AuthService_MultipleAuthMethods_FirstWins()
|
|
{
|
|
// Go: auth pipeline: external auth is tried; if returns null, next authenticator tried.
|
|
// .NET: ExternalAuth is registered in the pipeline; static password auth follows.
|
|
var service = AuthService.Build(new NatsOptions
|
|
{
|
|
ExternalAuth = new ExternalAuthOptions
|
|
{
|
|
Enabled = true,
|
|
Client = new FakeCalloutClient(("dlc", "zzz", "G", null)),
|
|
Timeout = TimeSpan.FromSeconds(2),
|
|
},
|
|
Username = "static_user",
|
|
Password = "static_pass",
|
|
});
|
|
|
|
// External auth handles dlc/zzz
|
|
var externalResult = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "dlc", Password = "zzz" },
|
|
Nonce = [],
|
|
});
|
|
|
|
// Static auth handles static_user/static_pass
|
|
var staticResult = service.Authenticate(new ClientAuthContext
|
|
{
|
|
Opts = new ClientOptions { Username = "static_user", Password = "static_pass" },
|
|
Nonce = [],
|
|
});
|
|
|
|
externalResult.ShouldNotBeNull();
|
|
staticResult.ShouldNotBeNull();
|
|
}
|
|
|
|
// =========================================================================
|
|
// Helper: Create a self-signed X.509 certificate for TLS tests
|
|
// =========================================================================
|
|
|
|
private static X509Certificate2 CreateSelfSignedCert(string subjectName)
|
|
{
|
|
using var key = System.Security.Cryptography.ECDsa.Create();
|
|
var request = new CertificateRequest(subjectName, key, System.Security.Cryptography.HashAlgorithmName.SHA256);
|
|
return request.CreateSelfSigned(DateTimeOffset.UtcNow.AddDays(-1), DateTimeOffset.UtcNow.AddDays(365));
|
|
}
|
|
}
|
|
|
|
// =========================================================================
|
|
// Fake IExternalAuthClient implementations for testing
|
|
// =========================================================================
|
|
|
|
/// <summary>
|
|
/// Allows only the specified (username, password, account, reason) tuples.
|
|
/// </summary>
|
|
internal sealed class FakeCalloutClient : IExternalAuthClient
|
|
{
|
|
private readonly (string User, string Pass, string Account, string? Reason)[] _allowed;
|
|
|
|
public FakeCalloutClient(params (string User, string Pass, string Account, string? Reason)[] allowed)
|
|
=> _allowed = allowed;
|
|
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
foreach (var (user, pass, account, _) in _allowed)
|
|
{
|
|
if (request.Username == user && request.Password == pass)
|
|
return Task.FromResult(new ExternalAuthDecision(true, user, account));
|
|
}
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "denied"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Allows a specific token and maps to a given identity and account.
|
|
/// </summary>
|
|
internal sealed class TokenCalloutClient(string token, string identity, string account) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
if (request.Token == token)
|
|
return Task.FromResult(new ExternalAuthDecision(true, identity, account));
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "no token match"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Maps each token to a (identity, account) pair.
|
|
/// </summary>
|
|
internal sealed class TokenToAccountClient : IExternalAuthClient
|
|
{
|
|
private readonly Dictionary<string, (string Identity, string Account)> _map;
|
|
|
|
public TokenToAccountClient(IEnumerable<(string Token, string Identity, string Account)> entries)
|
|
=> _map = entries.ToDictionary(e => e.Token, e => (e.Identity, e.Account));
|
|
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
if (request.Token != null && _map.TryGetValue(request.Token, out var entry))
|
|
return Task.FromResult(new ExternalAuthDecision(true, entry.Identity, entry.Account));
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "no token match"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Always denies; never allows any connection.
|
|
/// </summary>
|
|
internal sealed class AlwaysDenyClient : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult(new ExternalAuthDecision(false, Reason: "always denied"));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Always allows with a fixed identity.
|
|
/// </summary>
|
|
internal sealed class AlwaysAllowClient(string identity) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult(new ExternalAuthDecision(true, identity));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Maps each username to an account name; any password is accepted.
|
|
/// </summary>
|
|
internal sealed class MultiAccountCalloutClient : IExternalAuthClient
|
|
{
|
|
private readonly Dictionary<string, string> _map;
|
|
|
|
public MultiAccountCalloutClient(IEnumerable<(string Username, string Account)> entries)
|
|
=> _map = entries.ToDictionary(e => e.Username, e => e.Account);
|
|
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
if (request.Username != null && _map.TryGetValue(request.Username, out var account))
|
|
return Task.FromResult(new ExternalAuthDecision(true, request.Username, account));
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "user not found"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Only permits mapping to accounts in the allowed list.
|
|
/// Returns a decision with the target account; caller verifies enforcement.
|
|
/// </summary>
|
|
internal sealed class AllowedAccountCalloutClient : IExternalAuthClient
|
|
{
|
|
private readonly HashSet<string> _allowedAccounts;
|
|
private readonly (string User, string Pass, string Account, string? Reason) _entry;
|
|
|
|
public AllowedAccountCalloutClient(
|
|
IEnumerable<string> allowedAccounts,
|
|
(string User, string Pass, string Account, string? Reason) entry)
|
|
{
|
|
_allowedAccounts = new HashSet<string>(allowedAccounts, StringComparer.Ordinal);
|
|
_entry = entry;
|
|
}
|
|
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
var (user, pass, account, _) = _entry;
|
|
if (request.Username == user && request.Password == pass)
|
|
{
|
|
if (_allowedAccounts.Contains(account))
|
|
return Task.FromResult(new ExternalAuthDecision(true, user, account));
|
|
// Account not allowed — deny
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "account not allowed"));
|
|
}
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "denied"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Captures the client certificate from the context and returns a fixed decision.
|
|
/// </summary>
|
|
internal sealed class CertCapturingCalloutClient(
|
|
Action<X509Certificate2?> onCert,
|
|
string identity,
|
|
string account) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
// The ExternalAuthRequest doesn't carry the cert; this is done at the context level.
|
|
// The test verifies the context is available before the client is invoked.
|
|
onCert(null); // cert captured from context in a real impl; see test for cert capture pattern
|
|
return Task.FromResult(new ExternalAuthDecision(true, identity, account));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a fixed error reason (denies all connections).
|
|
/// </summary>
|
|
internal sealed class ErrorReasonClient(string reason) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult(new ExternalAuthDecision(false, Reason: reason));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a decision with the given permissions.
|
|
/// </summary>
|
|
internal sealed class PermissionCalloutClient(
|
|
string identity,
|
|
string account,
|
|
Permissions? permissions) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult<ExternalAuthDecision>(new ExternalAuthDecisionWithPermissions(true, identity, account, permissions));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a decision that includes an expiry time.
|
|
/// </summary>
|
|
internal sealed class ExpiryCalloutClient(
|
|
string identity,
|
|
string account,
|
|
DateTimeOffset? expiresAt) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult<ExternalAuthDecision>(new ExternalAuthDecisionWithExpiry(true, identity, account, expiresAt));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Invokes a callback when called; always denies.
|
|
/// </summary>
|
|
internal sealed class TrackingCalloutClient(Action onInvoked) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
onInvoked();
|
|
return Task.FromResult(new ExternalAuthDecision(false, Reason: "tracking deny"));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Adds a delay before allowing the connection (to simulate a slow callout service).
|
|
/// </summary>
|
|
internal sealed class SlowCalloutClient : IExternalAuthClient
|
|
{
|
|
private readonly TimeSpan _delay;
|
|
private readonly string? _identity;
|
|
private readonly string? _account;
|
|
|
|
public SlowCalloutClient(TimeSpan delay, string? identity = null, string? account = null)
|
|
{
|
|
_delay = delay;
|
|
_identity = identity;
|
|
_account = account;
|
|
}
|
|
|
|
public async Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
{
|
|
var tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
|
|
await using var reg = ct.Register(() => tcs.TrySetCanceled(ct));
|
|
using var timer = new Timer(_ => tcs.TrySetResult(true), null, _delay, Timeout.InfiniteTimeSpan);
|
|
await tcs.Task;
|
|
return new ExternalAuthDecision(true, _identity ?? request.Username ?? "slow_user", _account);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Delegates to a Func for maximum test flexibility.
|
|
/// </summary>
|
|
internal sealed class CapturingCalloutClient(Func<ExternalAuthRequest, ExternalAuthDecision> handler) : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult(handler(request));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Wraps ExternalAuthCalloutAuthenticator to intercept the cert from context.
|
|
/// The base ExternalAuthCalloutAuthenticator passes the request to IExternalAuthClient;
|
|
/// the cert capture is done here at the context level.
|
|
/// </summary>
|
|
internal sealed class CertCapturingAuthenticator : IAuthenticator
|
|
{
|
|
private readonly Action<X509Certificate2?> _onCert;
|
|
private readonly string _identity;
|
|
private readonly string _account;
|
|
|
|
public CertCapturingAuthenticator(Action<X509Certificate2?> onCert, string identity, string account)
|
|
{
|
|
_onCert = onCert;
|
|
_identity = identity;
|
|
_account = account;
|
|
}
|
|
|
|
public AuthResult? Authenticate(ClientAuthContext context)
|
|
{
|
|
_onCert(context.ClientCertificate);
|
|
return new AuthResult { Identity = _identity, AccountName = _account };
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns Allowed=true but with null Identity so the fallback logic is exercised.
|
|
/// </summary>
|
|
internal sealed class FallbackIdentityClient : IExternalAuthClient
|
|
{
|
|
public Task<ExternalAuthDecision> AuthorizeAsync(ExternalAuthRequest request, CancellationToken ct)
|
|
=> Task.FromResult(new ExternalAuthDecision(true, null, null));
|
|
}
|
|
|
|
// =========================================================================
|
|
// Extended ExternalAuthDecision subtypes for permissions and expiry
|
|
// =========================================================================
|
|
|
|
/// <summary>
|
|
/// ExternalAuthDecision subtype that carries Permissions; used by ExternalAuthCalloutAuthenticator
|
|
/// to populate AuthResult.Permissions. Because the production type is a sealed record, we simulate
|
|
/// the permission-and-expiry feature here via a dedicated authenticator wrapper.
|
|
/// </summary>
|
|
internal sealed record ExternalAuthDecisionWithPermissions(
|
|
bool Allowed,
|
|
string? Identity,
|
|
string? Account,
|
|
Permissions? Permissions,
|
|
string? Reason = null) : ExternalAuthDecision(Allowed, Identity, Account, Reason);
|
|
|
|
/// <summary>
|
|
/// ExternalAuthDecision subtype that carries an expiry timestamp.
|
|
/// </summary>
|
|
internal sealed record ExternalAuthDecisionWithExpiry(
|
|
bool Allowed,
|
|
string? Identity,
|
|
string? Account,
|
|
DateTimeOffset? ExpiresAt,
|
|
string? Reason = null) : ExternalAuthDecision(Allowed, Identity, Account, Reason);
|
|
|
|
/// <summary>
|
|
/// Wrapper that exercises permission/expiry propagation by wrapping the IExternalAuthClient result
|
|
/// and converting ExternalAuthDecisionWithPermissions/Expiry to AuthResult correctly.
|
|
/// This simulates the extended decision handling that would live in a full server.
|
|
/// </summary>
|
|
internal sealed class ExtendedExternalAuthCalloutAuthenticator : IAuthenticator
|
|
{
|
|
private readonly IExternalAuthClient _client;
|
|
private readonly TimeSpan _timeout;
|
|
|
|
public ExtendedExternalAuthCalloutAuthenticator(IExternalAuthClient client, TimeSpan timeout)
|
|
{
|
|
_client = client;
|
|
_timeout = timeout;
|
|
}
|
|
|
|
public AuthResult? Authenticate(ClientAuthContext context)
|
|
{
|
|
using var cts = new CancellationTokenSource(_timeout);
|
|
ExternalAuthDecision decision;
|
|
try
|
|
{
|
|
decision = _client.AuthorizeAsync(
|
|
new ExternalAuthRequest(
|
|
context.Opts.Username,
|
|
context.Opts.Password,
|
|
context.Opts.Token,
|
|
context.Opts.JWT),
|
|
cts.Token).GetAwaiter().GetResult();
|
|
}
|
|
catch (OperationCanceledException)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (!decision.Allowed)
|
|
return null;
|
|
|
|
Permissions? permissions = null;
|
|
DateTimeOffset? expiry = null;
|
|
|
|
if (decision is ExternalAuthDecisionWithPermissions withPerms)
|
|
permissions = withPerms.Permissions;
|
|
if (decision is ExternalAuthDecisionWithExpiry withExpiry)
|
|
expiry = withExpiry.ExpiresAt;
|
|
|
|
return new AuthResult
|
|
{
|
|
Identity = decision.Identity ?? context.Opts.Username ?? "external",
|
|
AccountName = decision.Account,
|
|
Permissions = permissions,
|
|
Expiry = expiry,
|
|
};
|
|
}
|
|
}
|