Sicherung

RoboSharp/ImpersonateUser.cs

@@ -0,0 +1,95 @@
+#if NET40_OR_GREATER
+
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+using System.Security.Principal;
+
+namespace RoboSharp
+{
+
+    /// <summary>
+    /// Create an authenticated user to test Source/Destination directory access
+    /// <remarks>See Issue #43 and PR #45 </remarks>
+    /// <remarks>This class is not available in NetCoreApp3.1, NetStandard2.0, and NetStandard2.1</remarks>
+    /// </summary>
+    internal class ImpersonatedUser : IDisposable
+    {
+        IntPtr userHandle;
+
+        WindowsImpersonationContext impersonationContext;
+
+        /// <inheritdoc cref="ImpersonatedUser"/>
+        /// <inheritdoc cref="RoboCommand.Start(string, string, string)"></inheritdoc>
+        internal ImpersonatedUser(string user, string domain, string password)
+        {
+            userHandle = IntPtr.Zero;
+
+            bool loggedOn = LogonUser(
+                user,
+                domain,
+                password,
+                LogonType.Interactive,
+                LogonProvider.Default,
+                out userHandle);
+
+            if (!loggedOn)
+                throw new Win32Exception(Marshal.GetLastWin32Error());
+
+            // Begin impersonating the user
+            impersonationContext = WindowsIdentity.Impersonate(userHandle);
+        }
+
+        /// <inheritdoc cref="IDisposable.Dispose"/>
+        public void Dispose()
+        {
+            if (userHandle != IntPtr.Zero)
+            {
+                CloseHandle(userHandle);
+
+                userHandle = IntPtr.Zero;
+
+                impersonationContext.Undo();
+            }
+        }
+
+        [DllImport("advapi32.dll", SetLastError = true)]
+        static extern bool LogonUser(
+
+            string lpszUsername,
+
+            string lpszDomain,
+
+            string lpszPassword,
+
+            LogonType dwLogonType,
+
+            LogonProvider dwLogonProvider,
+
+            out IntPtr phToken
+
+            );
+
+        [DllImport("kernel32.dll", SetLastError = true)]
+        static extern bool CloseHandle(IntPtr hHandle);
+
+        enum LogonType : int
+        {
+            Interactive = 2,
+            Network = 3,
+            Batch = 4,
+            Service = 5,
+            NetworkCleartext = 8,
+            NewCredentials = 9,
+        }
+
+        enum LogonProvider : int
+        {
+            Default = 0,
+        }
+
+    }
+
+}
+
+#endif