Files
Marc Schier 70b4498db8 Certificate manager and ref counted certificate type (#3688)
* New certificate and secrete abstraction with certificate infrastructure and certificate/secret stores. 
* leak testing for certificate resources to validate new ref counting in every test assembly
* Migration guide updated and documentation added for all
* Remove IDisposable from Nodestate and UserIdentity.
* UserCertificateTokenHandler now just points into certificate registry/stores, no dispose required
* Fix CA2000 warnings and cleanup of other diagnostics, increase warning levels in .editorconfig
2026-05-12 07:56:38 +02:00

273 lines
13 KiB
C#

/* ========================================================================
* Copyright (c) 2005-2026 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.Collections.Generic;
using System.ComponentModel;
using System.Threading;
using System.Threading.Tasks;
using ModelContextProtocol.Server;
using Opc.Ua.Mcp.Serialization;
namespace Opc.Ua.Mcp.Tools
{
/// <summary>
/// MCP tools for viewing and modifying OPC UA client configuration settings
/// for the current MCP server session. Changes are in-memory only and
/// do not persist to the XML configuration file.
/// </summary>
[McpServerToolType]
public sealed class ConfigurationTools
{
/// <summary>
/// Get the current OPC UA client configuration settings.
/// </summary>
[McpServerTool(Name = "GetConfiguration")]
[Description(
"Get the current OPC UA client configuration settings, including transport quotas, security settings, and client configuration. Changes made with SetConfiguration are reflected here but are in-memory only (not saved to disk).")]
public static async Task<string> GetConfigurationAsync(
OpcUaSessionManager sessionManager,
CancellationToken ct = default)
{
try
{
ApplicationConfiguration config = await sessionManager.EnsureConfigurationAsync(ct)
.ConfigureAwait(false);
return OpcUaJsonHelper.Serialize(new Dictionary<string, object?>
{
["applicationName"] = config.ApplicationName,
["applicationUri"] = config.ApplicationUri,
["productUri"] = config.ProductUri,
["applicationType"] = config.ApplicationType.ToString(),
["transportQuotas"] = GetTransportQuotas(config),
["security"] = GetSecuritySettings(config),
["clientConfiguration"] = GetClientConfiguration(config)
});
}
catch (Exception ex)
{
return OpcUaJsonHelper.Serialize(new Dictionary<string, object?>
{
["error"] = true,
["message"] = ex.Message
});
}
}
/// <summary>
/// Modify OPC UA client configuration settings for the current session.
/// </summary>
[McpServerTool(Name = "SetConfiguration")]
[Description(
"Modify OPC UA client configuration settings for the current session. Changes are in-memory only and apply to subsequent connections. Use GetConfiguration to see current values. Provide only the settings you want to change.")]
public static async Task<string> SetConfigurationAsync(
OpcUaSessionManager sessionManager,
[Description("Operation timeout in milliseconds (e.g. 120000)")] int? operationTimeout = null,
[Description("Max string length for OPC UA messages (e.g. 4194304)")] int? maxStringLength = null,
[Description("Max byte string length (e.g. 4194304)")] int? maxByteStringLength = null,
[Description("Max array length (e.g. 65535)")] int? maxArrayLength = null,
[Description("Max message size in bytes (e.g. 4194304)")] int? maxMessageSize = null,
[Description("Max buffer size in bytes (e.g. 65535)")] int? maxBufferSize = null,
[Description("Channel lifetime in milliseconds (e.g. 300000)")] int? channelLifetime = null,
[Description("Security token lifetime in milliseconds (e.g. 3600000)")] int? securityTokenLifetime = null,
[Description("Default session timeout in milliseconds (e.g. 60000)")] int? defaultSessionTimeout = null,
[Description("Auto-accept untrusted certificates (true/false)")] bool? autoAcceptUntrustedCertificates = null,
[Description("Reject SHA1 signed certificates (true/false)")] bool? rejectSha1SignedCertificates = null,
[Description("Minimum certificate key size in bits (e.g. 2048)")] int? minimumCertificateKeySize = null,
CancellationToken ct = default)
{
try
{
ApplicationConfiguration config = await sessionManager.EnsureConfigurationAsync(ct)
.ConfigureAwait(false);
var changes = new List<string>();
// Transport quotas
if (config.TransportQuotas != null)
{
if (operationTimeout.HasValue)
{
config.TransportQuotas.OperationTimeout = operationTimeout.Value;
changes.Add($"OperationTimeout={operationTimeout.Value}");
}
if (maxStringLength.HasValue)
{
config.TransportQuotas.MaxStringLength = maxStringLength.Value;
changes.Add($"MaxStringLength={maxStringLength.Value}");
}
if (maxByteStringLength.HasValue)
{
config.TransportQuotas.MaxByteStringLength = maxByteStringLength.Value;
changes.Add($"MaxByteStringLength={maxByteStringLength.Value}");
}
if (maxArrayLength.HasValue)
{
config.TransportQuotas.MaxArrayLength = maxArrayLength.Value;
changes.Add($"MaxArrayLength={maxArrayLength.Value}");
}
if (maxMessageSize.HasValue)
{
config.TransportQuotas.MaxMessageSize = maxMessageSize.Value;
changes.Add($"MaxMessageSize={maxMessageSize.Value}");
}
if (maxBufferSize.HasValue)
{
config.TransportQuotas.MaxBufferSize = maxBufferSize.Value;
changes.Add($"MaxBufferSize={maxBufferSize.Value}");
}
if (channelLifetime.HasValue)
{
config.TransportQuotas.ChannelLifetime = channelLifetime.Value;
changes.Add($"ChannelLifetime={channelLifetime.Value}");
}
if (securityTokenLifetime.HasValue)
{
config.TransportQuotas.SecurityTokenLifetime = securityTokenLifetime.Value;
changes.Add($"SecurityTokenLifetime={securityTokenLifetime.Value}");
}
}
// Client configuration
if (config.ClientConfiguration != null && defaultSessionTimeout.HasValue)
{
config.ClientConfiguration.DefaultSessionTimeout = defaultSessionTimeout.Value;
changes.Add($"DefaultSessionTimeout={defaultSessionTimeout.Value}");
}
// Security configuration
if (config.SecurityConfiguration != null)
{
if (autoAcceptUntrustedCertificates.HasValue)
{
config.SecurityConfiguration.AutoAcceptUntrustedCertificates =
autoAcceptUntrustedCertificates.Value;
changes.Add(
$"AutoAcceptUntrustedCertificates={autoAcceptUntrustedCertificates.Value}");
}
if (rejectSha1SignedCertificates.HasValue)
{
config.SecurityConfiguration.RejectSHA1SignedCertificates =
rejectSha1SignedCertificates.Value;
changes.Add(
$"RejectSHA1SignedCertificates={rejectSha1SignedCertificates.Value}");
}
if (minimumCertificateKeySize.HasValue)
{
config.SecurityConfiguration.MinimumCertificateKeySize =
(ushort)minimumCertificateKeySize.Value;
changes.Add(
$"MinimumCertificateKeySize={minimumCertificateKeySize.Value}");
}
}
if (changes.Count == 0)
{
return OpcUaJsonHelper.Serialize(new Dictionary<string, object?>
{
["message"] = "No changes specified. Provide at least one setting to modify."
});
}
return OpcUaJsonHelper.Serialize(new Dictionary<string, object?>
{
["success"] = true,
["message"] = "Configuration updated for current session (in-memory only, not saved to disk). " +
"Disconnect and reconnect for transport quota changes to take effect.",
["changes"] = changes
});
}
catch (Exception ex)
{
return OpcUaJsonHelper.Serialize(new Dictionary<string, object?>
{
["error"] = true,
["message"] = ex.Message
});
}
}
private static Dictionary<string, object?> GetTransportQuotas(ApplicationConfiguration config)
{
TransportQuotas? tq = config.TransportQuotas;
if (tq == null)
{
return new Dictionary<string, object?> { ["configured"] = false };
}
return new Dictionary<string, object?>
{
["operationTimeout"] = tq.OperationTimeout,
["maxStringLength"] = tq.MaxStringLength,
["maxByteStringLength"] = tq.MaxByteStringLength,
["maxArrayLength"] = tq.MaxArrayLength,
["maxMessageSize"] = tq.MaxMessageSize,
["maxBufferSize"] = tq.MaxBufferSize,
["channelLifetime"] = tq.ChannelLifetime,
["securityTokenLifetime"] = tq.SecurityTokenLifetime
};
}
private static Dictionary<string, object?> GetSecuritySettings(ApplicationConfiguration config)
{
SecurityConfiguration? sc = config.SecurityConfiguration;
if (sc == null)
{
return new Dictionary<string, object?> { ["configured"] = false };
}
return new Dictionary<string, object?>
{
["autoAcceptUntrustedCertificates"] = sc.AutoAcceptUntrustedCertificates,
["rejectSHA1SignedCertificates"] = sc.RejectSHA1SignedCertificates,
["rejectUnknownRevocationStatus"] = sc.RejectUnknownRevocationStatus,
["minimumCertificateKeySize"] = sc.MinimumCertificateKeySize,
["sendCertificateChain"] = sc.SendCertificateChain,
["addAppCertToTrustedStore"] = sc.AddAppCertToTrustedStore
};
}
private static Dictionary<string, object?> GetClientConfiguration(ApplicationConfiguration config)
{
ClientConfiguration? cc = config.ClientConfiguration;
if (cc == null)
{
return new Dictionary<string, object?> { ["configured"] = false };
}
return new Dictionary<string, object?>
{
["defaultSessionTimeout"] = cc.DefaultSessionTimeout,
["minSubscriptionLifetime"] = cc.MinSubscriptionLifetime
};
}
}
}