Samuele Locatelli
344 lines
12 KiB
C#
344 lines
12 KiB
C#
/* ========================================================================
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* Copyright (c) 2005-2020 The OPC Foundation, Inc. All rights reserved.
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*
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* OPC Foundation MIT License 1.00
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* The complete license agreement can be found here:
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* http://opcfoundation.org/License/MIT/1.00/
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* ======================================================================*/
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using Mono.Options;
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using Opc.Ua;
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using Opc.Ua.Configuration;
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using Opc.Ua.Server;
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using Serilog;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Quickstarts.ReferenceServer
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{
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/// <summary>
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/// A dialog which asks for user input.
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/// </summary>
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public class ApplicationMessageDlg : IApplicationMessageDlg
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{
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private string m_message = string.Empty;
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private bool m_ask = false;
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public override void Message(string text, bool ask)
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{
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m_message = text;
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m_ask = ask;
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}
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public override async Task<bool> ShowAsync()
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{
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if (m_ask)
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{
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m_message += " (y/n, default y): ";
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Console.Write(m_message);
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}
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else
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{
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Console.WriteLine(m_message);
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}
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if (m_ask)
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{
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try
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{
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ConsoleKeyInfo result = Console.ReadKey();
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Console.WriteLine();
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return await Task.FromResult((result.KeyChar == 'y') || (result.KeyChar == 'Y') || (result.KeyChar == '\r')).ConfigureAwait(false);
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}
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catch
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{
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// intentionally fall through
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}
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}
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return await Task.FromResult(true).ConfigureAwait(false);
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}
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}
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/// <summary>
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/// The error code why the server exited.
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/// </summary>
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public enum ExitCode : int
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{
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Ok = 0,
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ErrorServerNotStarted = 0x80,
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ErrorServerRunning = 0x81,
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ErrorServerException = 0x82,
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ErrorInvalidCommandLine = 0x100
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};
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/// <summary>
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/// The program.
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/// </summary>
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public static class Program
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{
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public static async Task<int> Main(string[] args)
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{
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Console.WriteLine("{0} OPC UA Reference Server", Utils.IsRunningOnMono() ? "Mono" : ".Net Core");
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// command line options
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bool showHelp = false;
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bool autoAccept = false;
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bool console = false;
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string password = null;
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Mono.Options.OptionSet options = new Mono.Options.OptionSet {
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{ "h|help", "show this message and exit", h => showHelp = h != null },
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{ "a|autoaccept", "auto accept certificates (for testing only)", a => autoAccept = a != null },
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{ "c|console", "log trace to console", c => console = c != null },
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{ "p|password=", "optional password for private key", (string p) => password = p }
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};
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try
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{
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IList<string> extraArgs = options.Parse(args);
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foreach (string extraArg in extraArgs)
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{
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Console.WriteLine("Error: Unknown option: {0}", extraArg);
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showHelp = true;
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}
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}
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catch (OptionException e)
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{
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Console.WriteLine(e.Message);
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showHelp = true;
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}
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if (showHelp)
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{
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Console.WriteLine(Utils.IsRunningOnMono() ? "Usage: mono MonoReferenceServer.exe [OPTIONS]" : "Usage: dotnet ConsoleReferenceServer.dll [OPTIONS]");
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Console.WriteLine();
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Console.WriteLine("Options:");
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options.WriteOptionDescriptions(Console.Out);
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return (int)ExitCode.ErrorInvalidCommandLine;
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}
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var server = new MyRefServer() {
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AutoAccept = autoAccept,
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LogConsole = console,
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Password = password
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};
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await server.Run().ConfigureAwait(false);
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return (int)server.ExitCode;
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}
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}
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public class MyRefServer
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{
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private ReferenceServer m_server;
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private Task m_status;
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private DateTime m_lastEventTime;
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public bool LogConsole { get; set; } = false;
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public bool AutoAccept { get; set; } = false;
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public string Password { get; set; } = null;
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public ExitCode ExitCode { get; private set; }
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public async Task Run()
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{
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try
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{
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ExitCode = ExitCode.ErrorServerNotStarted;
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await StartConsoleReferenceServerAsync().ConfigureAwait(false);
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Console.WriteLine("Server started. Press Ctrl-C to exit...");
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ExitCode = ExitCode.ErrorServerRunning;
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}
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catch (Exception ex)
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{
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Console.WriteLine("Exception: {0}", ex.Message);
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ExitCode = ExitCode.ErrorServerException;
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return;
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}
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var quitEvent = new ManualResetEvent(false);
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try
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{
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Console.CancelKeyPress += (sender, eArgs) => {
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quitEvent.Set();
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eArgs.Cancel = true;
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};
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}
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catch
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{
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}
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// wait for timeout or Ctrl-C
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quitEvent.WaitOne();
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if (m_server != null)
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{
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Console.WriteLine("Server stopped. Waiting for exit...");
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using (ReferenceServer server = m_server)
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{
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// Stop status thread
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m_server = null;
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m_status.Wait();
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// Stop server and dispose
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server.Stop();
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}
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}
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ExitCode = ExitCode.Ok;
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}
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private void CertificateValidator_CertificateValidation(CertificateValidator validator, CertificateValidationEventArgs e)
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{
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if (e.Error.StatusCode == StatusCodes.BadCertificateUntrusted)
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{
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if (AutoAccept)
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{
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if (!LogConsole)
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{
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Console.WriteLine("Accepted Certificate: {0}", e.Certificate.Subject);
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}
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Utils.Trace(Utils.TraceMasks.Security, "Accepted Certificate: {0}", e.Certificate.Subject);
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e.Accept = true;
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return;
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}
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}
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if (!LogConsole)
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{
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Console.WriteLine("Rejected Certificate: {0} {1}", e.Error, e.Certificate.Subject);
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}
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Utils.Trace(Utils.TraceMasks.Security, "Rejected Certificate: {0} {1}", e.Error, e.Certificate.Subject);
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}
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private async Task StartConsoleReferenceServerAsync()
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{
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ApplicationInstance.MessageDlg = new ApplicationMessageDlg();
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CertificatePasswordProvider PasswordProvider = new CertificatePasswordProvider(Password);
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ApplicationInstance application = new ApplicationInstance {
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ApplicationName = "Quickstart Reference Server",
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ApplicationType = ApplicationType.Server,
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ConfigSectionName = Utils.IsRunningOnMono() ? "Quickstarts.MonoReferenceServer" : "Quickstarts.ReferenceServer",
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CertificatePasswordProvider = PasswordProvider
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};
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// load the application configuration.
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ApplicationConfiguration config = await application.LoadApplicationConfiguration(false).ConfigureAwait(false);
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var loggerConfiguration = new Serilog.LoggerConfiguration();
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if (LogConsole)
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{
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loggerConfiguration.WriteTo.Console(restrictedToMinimumLevel: Serilog.Events.LogEventLevel.Warning);
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}
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#if DEBUG
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else
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{
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loggerConfiguration.WriteTo.Debug(restrictedToMinimumLevel: Serilog.Events.LogEventLevel.Warning);
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}
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#endif
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SerilogTraceLogger.Create(loggerConfiguration, config);
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// check the application certificate.
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bool haveAppCertificate = await application.CheckApplicationInstanceCertificate(
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false, CertificateFactory.DefaultKeySize, CertificateFactory.DefaultLifeTime).ConfigureAwait(false);
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if (!haveAppCertificate)
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{
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throw new Exception("Application instance certificate invalid!");
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}
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if (!config.SecurityConfiguration.AutoAcceptUntrustedCertificates)
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{
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config.CertificateValidator.CertificateValidation += new CertificateValidationEventHandler(CertificateValidator_CertificateValidation);
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}
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// start the server.
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m_server = new ReferenceServer();
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await application.Start(m_server).ConfigureAwait(false);
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// print endpoint info
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var endpoints = application.Server.GetEndpoints().Select(e => e.EndpointUrl).Distinct();
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foreach (var endpoint in endpoints)
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{
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Console.WriteLine(endpoint);
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}
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// start the status thread
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m_status = Task.Run(new Action(StatusThreadAsync));
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// print notification on session events
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m_server.CurrentInstance.SessionManager.SessionActivated += EventStatus;
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m_server.CurrentInstance.SessionManager.SessionClosing += EventStatus;
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m_server.CurrentInstance.SessionManager.SessionCreated += EventStatus;
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}
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private void EventStatus(Session session, SessionEventReason reason)
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{
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m_lastEventTime = DateTime.UtcNow;
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PrintSessionStatus(session, reason.ToString());
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}
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private void PrintSessionStatus(Session session, string reason, bool lastContact = false)
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{
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lock (session.DiagnosticsLock)
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{
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StringBuilder item = new StringBuilder();
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item.AppendFormat("{0,9}:{1,20}:", reason, session.SessionDiagnostics.SessionName);
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if (lastContact)
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{
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item.AppendFormat("Last Event:{0:HH:mm:ss}", session.SessionDiagnostics.ClientLastContactTime.ToLocalTime());
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}
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else
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{
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if (session.Identity != null)
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{
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item.AppendFormat(":{0,20}", session.Identity.DisplayName);
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}
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item.AppendFormat(":{0}", session.Id);
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}
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Console.WriteLine(item.ToString());
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}
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}
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private async void StatusThreadAsync()
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{
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while (m_server != null)
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{
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if (DateTime.UtcNow - m_lastEventTime > TimeSpan.FromMilliseconds(6000))
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{
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IList<Session> sessions = m_server.CurrentInstance.SessionManager.GetSessions();
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for (int ii = 0; ii < sessions.Count; ii++)
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{
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Session session = sessions[ii];
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PrintSessionStatus(session, "-Status-", true);
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}
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m_lastEventTime = DateTime.UtcNow;
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}
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await Task.Delay(1000).ConfigureAwait(false);
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}
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}
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}
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}
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