Implemented VirtualPrinterDriver project

Common/VirtualPrinter.Utils/Shell.cs

@@ -0,0 +1,95 @@
+using System;
+using System.IO;
+using System.Text;
+using System.Threading;
+
+using JetBrains.Annotations;
+
+using VirtualPrinter.Agent.Core;
+using VirtualPrinter.Logging;
+
+namespace VirtualPrinter.Utils
+{
+    public class Shell : IShell
+    {
+        private readonly IVirtualPrinterLogger<Shell> _logger = new VirtualPrinterLogger<Shell>();
+
+        public void WriteIniEntry(string section, string key, string value, string iniFilePath)
+        {
+            Win32Sys.WritePrivateProfileString(section, key, value, iniFilePath);
+        }
+
+        public T ReadIniEntry<T>(string section, string key, string iniFilePath)
+        {
+            var buffer = new StringBuilder(64 * 1024);
+            Win32Sys.GetPrivateProfileString(section, key, string.Empty, buffer, buffer.Capacity, iniFilePath);
+            var value = buffer.ToString().Trim();
+            return (T)Convert.ChangeType(value, typeof(T));
+        }
+
+        public void Execute(IJobInfo job, ISessionInfo session, string exe, string args)
+        {
+            var thr = new Thread
+            (
+                () =>
+                {
+                    try
+                    {
+                        if (!File.Exists(exe))
+                            throw new FileNotFoundException(exe);
+#if DEBUG
+                        System.Diagnostics.Process.Start(exe, args);
+#else
+                        StartProcessAsUser(job, session, exe, args);
+#endif
+                    }
+                    catch (Exception exception)
+                    {
+                        LogError(exception, "Failed to create process");
+                    }
+                }
+            );
+
+            thr.Start();
+        }
+
+        public bool FileExists(string path)
+        {
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentException("The path may not be null or empty.");
+            }
+
+            return File.Exists(path);
+        }
+
+        private void StartProcessAsUser([NotNull]IJobInfo job, [NotNull]ISessionInfo session, string exe, string args)
+        {
+            if (job == null)
+            {
+                throw new ArgumentNullException(nameof(job));
+            }
+
+            if (session == null)
+            {
+                throw new ArgumentNullException(nameof(session));
+            }
+
+            var cmd = $@"""{exe}"" {args}";
+            var id = session.Id;
+            var user = job.MachineName.TrimStart('\\') + '\\' + job.UserName;
+            LogDebug($"Executing '{cmd}' for '{user}' ({id})...");
+            Win32Sys.CreateProcessAsUser(id, user, cmd);
+        }
+
+        private void LogDebug(string message, params object[] args)
+        {
+            _logger.Debug(message, args);
+        }
+
+        private void LogError(Exception exception, string message, params object[] args)
+        {
+            _logger.Error(exception, message, args);
+        }
+    }
+}