mirror of
https://github.com/OPCFoundation/UA-.NETStandard.git
synced 2026-10-28 22:55:49 +08:00
# Description Nullable reference types are now enabled once, in `common.props`, and every project in the repository builds warning-clean with them. **Configuration** - `<Nullable>enable</Nullable>` lives in `common.props`. All per-project `<Nullable>` settings are removed: 178 project files (enable, annotations, and the `disable` in the three Aot test projects). - 419 per-file `#nullable enable`/`restore` directives and the 4 `#nullable disable` directives are removed. - Kept on purpose: - The 5 `<auto-generated>` schema files (`UANodeSet.cs`, `UA Type Dictionary.cs`, `OPCBinarySchema.cs`, `SecuredApplication.cs`, `PInvokeHelper.cs`) keep `#nullable enable`. The compiler ignores the project setting in generated code, so the directive is required there. - `tests/Opc.Ua.Interop.LegacyPeer` keeps `disable`. It builds against the 1.5.378 packages and does not import the repository props. - `docs/DeveloperGuide.md` and `.github/copilot-instructions.md` now describe the central setting. **Migration** (the 43 unset and 13 annotations-only projects, roughly 10k diagnostics) - **Production code: annotated at the declarations.** Covers `tools/Opc.Ua.SourceGeneration.Core`, `src/Opc.Ua.Lds.Server` and the LDS sample. - Members, parameters and returns are nullable where null actually flows. - Null-check helpers carry `[NotNullWhen]` (`IsNull`, `IsValidXmlName`, `IsMethodTypeDesign`). - `CoreUtils.Format`, `Utils.Format`, `ITemplateWriter.WriteLine` take `params object?[]`. `Template.AddReplacement` takes `string?` (rendering already skips null replacements). - `IRegisteredServerStore.RegisterAsync` returns `Task<RegistrationEntry?>`: it returns null when a registration is removed. - Dereferences backed by an invariant (for example, the validated model) use `!`, so runtime behaviour is unchanged. - **Behavioural changes in production code** (small, deliberate): - `NodeSetToModelDesign` throws `InvalidOperationException` when the file is not a NodeSet. Before, it threw a NullReferenceException on the next line. - `ModelDesignValidator` starts its lookup tables empty instead of null. A redundant `if (m_nodes == null) return;` guard is gone. - **Test code: minimal annotations.** - `?` on values that can be null, `!` where the test asserts non-null. - `= null!` for fixture members assigned in SetUp. - `TryGetStructure<T>(out T? x)` where the inferred `T?` broke the `IEncodeable` constraint. - A few redundant `== null` checks on structs (`NodeId`, `ArrayOf<T>`) folded into the adjacent `IsNull`/`Count` checks. **Notes for reviewers** - The diff is large (~1,500 files) but almost entirely mechanical: `?`, `!` and directive removal. The non-annotation changes are listed above. - Known follow-up, not done here: `IModelDesign.Namespaces/TargetNamespace/NamespaceUris` stay non-nullable even though the validator returns null before it loads a dictionary. Making them nullable would ripple through every generator call site. ## Related Issues - Fixes #4439 ## Checklist - [ ] I have signed the [CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf) and read the [CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md) doc. - [ ] I have added tests that prove my fix is effective or that my feature works and increased code coverage. - [x] I have added all necessary documentation. - [x] I have verified that my changes do not introduce (new) build or analyzer warnings. - [ ] I ran **all** tests locally using the **UA.slnx** solution against at least .net **framework** and .net **10**, and all passed. - [ ] I fixed **all** failing and flaky tests in the CI pipelines and **all** CodeQL warnings. - [ ] I have addressed **all** PR feedback received. The "no new warnings" box covers net10.0 and net48: full non-incremental builds of `UA.slnx`, `tools/SourceGeneration.slnx`, `tools/MigrationAnalyzer.slnx` and the Aot test projects finished with 0 warnings and 0 errors under the repository's warnings-as-errors settings. net9.0 and net8.0 also had no nullable diagnostics, but they were not rebuilt after the final fixes. Tests have not been run locally yet. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
613 lines
26 KiB
C#
613 lines
26 KiB
C#
/* ========================================================================
|
|
* Copyright (c) 2005-2025 The OPC Foundation, Inc. All rights reserved.
|
|
*
|
|
* OPC Foundation MIT License 1.00
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use,
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following
|
|
* conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
|
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* The complete license agreement can be found here:
|
|
* http://opcfoundation.org/License/MIT/1.00/
|
|
* ======================================================================*/
|
|
|
|
using System;
|
|
using System.Net;
|
|
using System.Threading.Tasks;
|
|
using NUnit.Framework;
|
|
using Opc.Ua.Server.TestFramework;
|
|
using Quickstarts.ReferenceServer;
|
|
|
|
namespace Opc.Ua.Server.Tests
|
|
{
|
|
/// <summary>
|
|
/// Tests for client lockout functionality after failed authentication attempts.
|
|
/// </summary>
|
|
[TestFixture]
|
|
[Category("Session")]
|
|
[Category("Security")]
|
|
public class ClientLockoutTests
|
|
{
|
|
private ServerFixture<StandardServer> m_fixture;
|
|
private StandardServer m_server;
|
|
|
|
/// <summary>
|
|
/// Starts the reference server with anonymous and username policies for authentication lockout tests.
|
|
/// </summary>
|
|
[OneTimeSetUp]
|
|
public async Task OneTimeSetUpAsync()
|
|
{
|
|
m_fixture = new ServerFixture<StandardServer>(t => new ReferenceServer(t));
|
|
await m_fixture.LoadConfigurationAsync().ConfigureAwait(false);
|
|
m_fixture.Config.ServerConfiguration!.UserTokenPolicies =
|
|
[
|
|
new UserTokenPolicy(UserTokenType.Anonymous),
|
|
new UserTokenPolicy(UserTokenType.UserName)
|
|
];
|
|
m_server = await m_fixture.StartAsync().ConfigureAwait(false);
|
|
}
|
|
|
|
[OneTimeTearDown]
|
|
public async Task OneTimeTearDownAsync()
|
|
{
|
|
await m_fixture.StopAsync().ConfigureAwait(false);
|
|
}
|
|
|
|
[TearDown]
|
|
public void ClearAuthenticationLockouts()
|
|
{
|
|
m_server.CurrentInstance.SessionManager.ClearAuthenticationLockouts();
|
|
}
|
|
|
|
[Test]
|
|
public async Task FailedAuthenticationAttemptsAreTrackedAsync()
|
|
{
|
|
const string sessionName = nameof(FailedAuthenticationAttemptsAreTrackedAsync);
|
|
ArrayOf<EndpointDescription> endpoints = m_server.GetEndpoints();
|
|
EndpointDescription endpoint = FindTcpEndpoint(endpoints);
|
|
|
|
SecureChannelContext secureChannelContext = CreateSecureChannelContext(sessionName, endpoint);
|
|
var requestHeader = new RequestHeader();
|
|
|
|
CreateSessionResponse createResponse = await m_server.CreateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
null,
|
|
null,
|
|
null,
|
|
sessionName,
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(createResponse.ResponseHeader);
|
|
requestHeader.AuthenticationToken = createResponse.AuthenticationToken;
|
|
|
|
var invalidToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "invaliduser",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("wrongpassword").ToByteString(),
|
|
PolicyId = "0"
|
|
};
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
{
|
|
ServiceResultException exception = Assert.ThrowsAsync<ServiceResultException>(async () => await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false));
|
|
|
|
Assert.That(exception, Is.Not.Null);
|
|
Assert.That(
|
|
exception.StatusCode == StatusCodes.BadIdentityTokenInvalid ||
|
|
exception.StatusCode == StatusCodes.BadIdentityTokenRejected ||
|
|
exception.StatusCode == StatusCodes.BadUserAccessDenied,
|
|
Is.True,
|
|
$"Expected authentication failure status code, got {exception.StatusCode}");
|
|
}
|
|
|
|
await m_server.CloseSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
[Test]
|
|
public async Task ClientIsLockedOutAfterFiveFailedAttemptsAsync()
|
|
{
|
|
const string sessionName = nameof(ClientIsLockedOutAfterFiveFailedAttemptsAsync);
|
|
ArrayOf<EndpointDescription> endpoints = m_server.GetEndpoints();
|
|
EndpointDescription endpoint = FindTcpEndpoint(endpoints);
|
|
UserTokenPolicy userNamePolicy = endpoint.UserIdentityTokens.Find(
|
|
policy => policy.TokenType == UserTokenType.UserName)
|
|
?? throw new AssertionException("The endpoint must advertise a Username token policy.");
|
|
userNamePolicy.SecurityPolicyUri = SecurityPolicies.None;
|
|
|
|
SecureChannelContext secureChannelContext = CreateSecureChannelContext(
|
|
sessionName, endpoint, IPAddress.Parse("192.0.2.10"));
|
|
var requestHeader = new RequestHeader
|
|
{
|
|
ReturnDiagnostics = (uint)DiagnosticsMasks.ServiceLocalizedText
|
|
};
|
|
|
|
CreateSessionResponse createResponse = await m_server.CreateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
null,
|
|
null,
|
|
null,
|
|
sessionName,
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(createResponse.ResponseHeader);
|
|
requestHeader.AuthenticationToken = createResponse.AuthenticationToken;
|
|
|
|
var invalidToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "lockoutuser",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("wrongpassword").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
var validToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "user1",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("password").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
for (int i = 0; i < 5; i++)
|
|
{
|
|
ServiceResultException rejected = Assert.ThrowsAsync<ServiceResultException>(async () =>
|
|
await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false));
|
|
Assert.That(rejected.StatusCode, Is.EqualTo(StatusCodes.BadUserAccessDenied));
|
|
}
|
|
|
|
CreateSessionResponse newCreateResponse = await m_server.CreateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
null,
|
|
null,
|
|
null,
|
|
sessionName + "_2",
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(newCreateResponse.ResponseHeader);
|
|
requestHeader.AuthenticationToken = newCreateResponse.AuthenticationToken;
|
|
|
|
ServiceResultException lockoutException = Assert.ThrowsAsync<ServiceResultException>(async () => await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
newCreateResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(validToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false));
|
|
|
|
Assert.That(lockoutException, Is.Not.Null);
|
|
Assert.That(lockoutException.StatusCode, Is.EqualTo(StatusCodes.BadUserAccessDenied));
|
|
Assert.That(lockoutException.Message, Does.Contain("Too many failed authentication attempts"));
|
|
|
|
await m_server.CloseSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
[TestCase(true)]
|
|
[TestCase(false)]
|
|
public async Task UnsecuredLockoutUsesObservedPeerInsteadOfApplicationUriAsync(bool hasPeerAddress)
|
|
{
|
|
const string sessionName = nameof(UnsecuredLockoutUsesObservedPeerInsteadOfApplicationUriAsync);
|
|
ArrayOf<EndpointDescription> endpoints = m_server.GetEndpoints();
|
|
EndpointDescription endpoint = FindTcpEndpoint(endpoints);
|
|
UserTokenPolicy userNamePolicy = endpoint.UserIdentityTokens.Find(
|
|
policy => policy.TokenType == UserTokenType.UserName)
|
|
?? throw new AssertionException("The endpoint must advertise a Username token policy.");
|
|
userNamePolicy.SecurityPolicyUri = SecurityPolicies.None;
|
|
var invalidToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "user1",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("wrongpassword").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
var validToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "user1",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("password").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
for (int i = 0; i < 5; i++)
|
|
{
|
|
SecureChannelContext firstContext = CreateSecureChannelContext(
|
|
hasPeerAddress ? sessionName + i : "shared-listener",
|
|
endpoint,
|
|
(hasPeerAddress ? IPAddress.Loopback : null)!);
|
|
var firstHeader = new RequestHeader();
|
|
CreateSessionResponse firstSession = await m_server.CreateSessionAsync(
|
|
firstContext,
|
|
firstHeader,
|
|
new ApplicationDescription { ApplicationUri = "urn:attacker:" + i },
|
|
null,
|
|
null,
|
|
sessionName + i,
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
firstHeader.AuthenticationToken = firstSession.AuthenticationToken;
|
|
ServiceResultException rejected = Assert.ThrowsAsync<ServiceResultException>(async () =>
|
|
await m_server.ActivateSessionAsync(
|
|
firstContext,
|
|
firstHeader,
|
|
firstSession.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false));
|
|
Assert.That(rejected.StatusCode, Is.EqualTo(StatusCodes.BadUserAccessDenied));
|
|
await m_server.CloseSessionAsync(
|
|
firstContext,
|
|
firstHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
SecureChannelContext victimContext = CreateSecureChannelContext(
|
|
hasPeerAddress ? sessionName + "-victim" : "shared-listener",
|
|
endpoint,
|
|
(hasPeerAddress ? IPAddress.Loopback : null)!);
|
|
var victimHeader = new RequestHeader
|
|
{
|
|
ReturnDiagnostics = (uint)DiagnosticsMasks.ServiceLocalizedText
|
|
};
|
|
CreateSessionResponse victimSession = await m_server.CreateSessionAsync(
|
|
victimContext,
|
|
victimHeader,
|
|
new ApplicationDescription { ApplicationUri = "urn:legitimate-client" },
|
|
null,
|
|
null,
|
|
sessionName + "-victim",
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
victimHeader.AuthenticationToken = victimSession.AuthenticationToken;
|
|
|
|
async Task<ActivateSessionResponse> ActivateVictimAsync()
|
|
{
|
|
return await m_server.ActivateSessionAsync(
|
|
victimContext,
|
|
victimHeader,
|
|
victimSession.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(validToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
if (hasPeerAddress)
|
|
{
|
|
ServiceResultException exception = Assert.ThrowsAsync<ServiceResultException>(ActivateVictimAsync);
|
|
Assert.That(exception.StatusCode, Is.EqualTo(StatusCodes.BadUserAccessDenied));
|
|
Assert.That(exception.Message, Does.Contain("Too many failed authentication attempts"));
|
|
}
|
|
else
|
|
{
|
|
ActivateSessionResponse activated = await ActivateVictimAsync().ConfigureAwait(false);
|
|
Assert.That(activated.ResponseHeader.ServiceResult, Is.EqualTo(StatusCodes.Good));
|
|
}
|
|
await m_server.CloseSessionAsync(
|
|
victimContext,
|
|
victimHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Verifies that successful username authentication clears prior failed attempts for the client application.
|
|
/// </summary>
|
|
/// <exception cref="AssertionException"></exception>
|
|
[Test]
|
|
public async Task SuccessfulAuthenticationClearsFailedAttemptsAsync()
|
|
{
|
|
const string sessionName = nameof(SuccessfulAuthenticationClearsFailedAttemptsAsync);
|
|
ArrayOf<EndpointDescription> endpoints = m_server.GetEndpoints();
|
|
EndpointDescription endpoint = FindTcpEndpoint(endpoints);
|
|
UserTokenPolicy userNamePolicy = endpoint.UserIdentityTokens.Find(
|
|
policy => policy.TokenType == UserTokenType.UserName)
|
|
?? throw new AssertionException("The endpoint must advertise a Username token policy.");
|
|
|
|
SecureChannelContext secureChannelContext = CreateSecureChannelContext(sessionName, endpoint);
|
|
var requestHeader = new RequestHeader();
|
|
|
|
CreateSessionResponse createResponse = await m_server.CreateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
null,
|
|
null,
|
|
null,
|
|
sessionName,
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(createResponse.ResponseHeader);
|
|
requestHeader.AuthenticationToken = createResponse.AuthenticationToken;
|
|
|
|
var invalidToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "clearuser",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("wrongpassword").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
// Only successful authentication with a real (non-anonymous) identity
|
|
// clears the failed authentication counter. Anonymous activations
|
|
// intentionally do not reset the counter to prevent attackers from
|
|
// interleaving anonymous logins to bypass the lockout.
|
|
var validToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "user1",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("password").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
for (int i = 0; i < 3; i++)
|
|
{
|
|
try
|
|
{
|
|
await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
catch (ServiceResultException)
|
|
{
|
|
}
|
|
}
|
|
|
|
ActivateSessionResponse activateResponse = await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(validToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(activateResponse.ResponseHeader);
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
{
|
|
try
|
|
{
|
|
await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
catch (ServiceResultException)
|
|
{
|
|
}
|
|
}
|
|
|
|
activateResponse = await m_server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(validToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(activateResponse.ResponseHeader);
|
|
|
|
await m_server.CloseSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Verifies that disabling lockout permits valid authentication after failures exceed the normal threshold.
|
|
/// </summary>
|
|
/// <exception cref="AssertionException"></exception>
|
|
[Test]
|
|
public async Task ClientIsNotLockedOutWhenLockoutDisabledAsync()
|
|
{
|
|
// A server configured with MaxFailedAuthenticationAttempts <= 0 disables
|
|
// the brute-force lockout entirely: a client may fail authentication more
|
|
// than the normal threshold (5) and still authenticate afterwards. This
|
|
// supports legitimate high-volume single-certificate clients (for example
|
|
// the many-sessions load test) where transient connect failures must not
|
|
// lock the shared certificate out.
|
|
var fixture = new ServerFixture<StandardServer>(t => new ReferenceServer(t));
|
|
await fixture.LoadConfigurationAsync().ConfigureAwait(false);
|
|
fixture.Config.ServerConfiguration!.MaxFailedAuthenticationAttempts = 0;
|
|
fixture.Config.ServerConfiguration.UserTokenPolicies =
|
|
[
|
|
new UserTokenPolicy(UserTokenType.Anonymous),
|
|
new UserTokenPolicy(UserTokenType.UserName)
|
|
];
|
|
StandardServer server = await fixture.StartAsync().ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
const string sessionName = nameof(ClientIsNotLockedOutWhenLockoutDisabledAsync);
|
|
ArrayOf<EndpointDescription> endpoints = server.GetEndpoints();
|
|
EndpointDescription endpoint = FindTcpEndpoint(endpoints);
|
|
UserTokenPolicy userNamePolicy = endpoint.UserIdentityTokens.Find(
|
|
policy => policy.TokenType == UserTokenType.UserName)
|
|
?? throw new AssertionException("The endpoint must advertise a Username token policy.");
|
|
|
|
SecureChannelContext secureChannelContext = CreateSecureChannelContext(sessionName, endpoint);
|
|
var requestHeader = new RequestHeader();
|
|
|
|
CreateSessionResponse createResponse = await server.CreateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
null,
|
|
null,
|
|
null,
|
|
sessionName,
|
|
default,
|
|
default,
|
|
ServerFixtureUtils.DefaultSessionTimeout,
|
|
ServerFixtureUtils.DefaultMaxResponseMessageSize,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(createResponse.ResponseHeader);
|
|
requestHeader.AuthenticationToken = createResponse.AuthenticationToken;
|
|
|
|
var invalidToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "lockoutuser",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("wrongpassword").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
var validToken = new UserNameIdentityToken
|
|
{
|
|
UserName = "user1",
|
|
Password = System.Text.Encoding.UTF8.GetBytes("password").ToByteString(),
|
|
PolicyId = userNamePolicy.PolicyId
|
|
};
|
|
|
|
// Fail authentication well beyond the normal lockout threshold (5).
|
|
for (int i = 0; i < 7; i++)
|
|
{
|
|
try
|
|
{
|
|
await server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(invalidToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
catch (ServiceResultException)
|
|
{
|
|
}
|
|
}
|
|
|
|
// With the lockout disabled a valid token still activates: it would be
|
|
// rejected with BadUserAccessDenied if the client had been locked out.
|
|
ActivateSessionResponse activateResponse = await server.ActivateSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
createResponse.ServerSignature,
|
|
[],
|
|
[],
|
|
new ExtensionObject(validToken),
|
|
null,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
|
|
ServerFixtureUtils.ValidateResponse(activateResponse.ResponseHeader);
|
|
|
|
await server.CloseSessionAsync(
|
|
secureChannelContext,
|
|
requestHeader,
|
|
true,
|
|
RequestLifetime.None).ConfigureAwait(false);
|
|
}
|
|
finally
|
|
{
|
|
await fixture.StopAsync().ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
private static EndpointDescription FindTcpEndpoint(ArrayOf<EndpointDescription> endpoints)
|
|
{
|
|
EndpointDescription endpoint = endpoints.Find(e =>
|
|
e.TransportProfileUri!.Equals(Profiles.UaTcpTransport, StringComparison.Ordinal) ||
|
|
e.TransportProfileUri.Equals(Profiles.HttpsBinaryTransport, StringComparison.Ordinal))
|
|
?? throw new NotSupportedException("No supported transport profile found.");
|
|
|
|
endpoint.SecurityMode = MessageSecurityMode.None;
|
|
endpoint.SecurityPolicyUri = SecurityPolicies.None;
|
|
return endpoint;
|
|
}
|
|
|
|
private static SecureChannelContext CreateSecureChannelContext(
|
|
string sessionName,
|
|
EndpointDescription endpoint,
|
|
IPAddress? peerAddress = null)
|
|
{
|
|
return new SecureChannelContext(
|
|
sessionName,
|
|
endpoint,
|
|
RequestEncoding.Binary,
|
|
clientChannelCertificate: null,
|
|
serverChannelCertificate: null,
|
|
channelThumbprint: null,
|
|
peerAddress: peerAddress);
|
|
}
|
|
}
|
|
}
|