Dot-Net
如何在 Vista (.NET) 中執行不提升
我有一個必須以管理員身份執行的應用程序。
該應用程序的一小部分是使用 Process.Start 啟動其他應用程序
啟動的應用程序也將以管理員身份執行，但我寧願看到它們以“普通”使用者身份執行。
我該如何做到這一點？
/約翰/
WinSafer API 允許以受限使用者、普通使用者或提升使用者身份啟動程序。
樣品用法：
CreateSaferProcess(@"calc.exe", "", SaferLevel.NormalUser);原始碼：
//http://odetocode.com/Blogs/scott/archive/2004/10/28/602.aspx public static void CreateSaferProcess(String fileName, String arguments, SaferLevel saferLevel) { IntPtr saferLevelHandle = IntPtr.Zero; //Create a SaferLevel handle to match what was requested if (!WinSafer.SaferCreateLevel( SaferLevelScope.User, saferLevel, SaferOpen.Open, out saferLevelHandle, IntPtr.Zero)) { throw new Win32Exception(Marshal.GetLastWin32Error()); } try { //Generate the access token to use, based on the safer level handle. IntPtr hToken = IntPtr.Zero; if (!WinSafer.SaferComputeTokenFromLevel( saferLevelHandle, // SAFER Level handle IntPtr.Zero, // NULL is current thread token. out hToken, // Target token SaferTokenBehaviour.Default, // No flags IntPtr.Zero)) // Reserved { throw new Win32Exception(Marshal.GetLastWin32Error()); } try { //Now that we have a security token, we can lauch the process //using the standard CreateProcessAsUser API STARTUPINFO si = new STARTUPINFO(); si.cb = Marshal.SizeOf(si); si.lpDesktop = String.Empty; PROCESS_INFORMATION pi = new PROCESS_INFORMATION(); // Spin up the new process Boolean bResult = Windows.CreateProcessAsUser( hToken, fileName, arguments, IntPtr.Zero, //process attributes IntPtr.Zero, //thread attributes false, //inherit handles 0, //CREATE_NEW_CONSOLE IntPtr.Zero, //environment null, //current directory ref si, //startup info out pi); //process info if (!bResult) throw new Win32Exception(Marshal.GetLastWin32Error()); if (pi.hProcess != IntPtr.Zero) Windows.CloseHandle(pi.hProcess); if (pi.hThread != IntPtr.Zero) Windows.CloseHandle(pi.hThread); } finally { if (hToken != IntPtr.Zero) Windows.CloseHandle(hToken); } } finally { WinSafer.SaferCloseLevel(saferLevelHandle); } }P/Invoke 聲明：
using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; namespace PInvoke { public class WinSafer { /// <summary> /// The SaferCreateLevel function opens a SAFER_LEVEL_HANDLE. /// </summary> /// <param name="scopeId">The scope of the level to be created.</param> /// <param name="levelId">The level of the handle to be opened.</param> /// <param name="openFlags">Must be SaferOpenFlags.Open</param> /// <param name="levelHandle">The returned SAFER_LEVEL_HANDLE. When you have finished using the handle, release it by calling the SaferCloseLevel function.</param> /// <param name="reserved">This parameter is reserved for future use. IntPtr.Zero</param> /// <returns></returns> [DllImport("advapi32", SetLastError = true, CallingConvention = CallingConvention.StdCall)] public static extern bool SaferCreateLevel(SaferLevelScope scopeId, SaferLevel levelId, SaferOpen openFlags, out IntPtr levelHandle, IntPtr reserved); /// <summary> /// The SaferComputeTokenFromLevel function restricts a token using restrictions specified by a SAFER_LEVEL_HANDLE. /// </summary> /// <param name="levelHandle">SAFER_LEVEL_HANDLE that contains the restrictions to place on the input token. Do not pass handles with a LevelId of SAFER_LEVELID_FULLYTRUSTED or SAFER_LEVELID_DISALLOWED to this function. This is because SAFER_LEVELID_FULLYTRUSTED is unrestricted and SAFER_LEVELID_DISALLOWED does not contain a token.</param> /// <param name="inAccessToken">Token to be restricted. If this parameter is NULL, the token of the current thread will be used. If the current thread does not contain a token, the token of the current process is used.</param> /// <param name="outAccessToken">The resulting restricted token.</param> /// <param name="flags">Specifies the behavior of the method.</param> /// <param name="lpReserved">Reserved for future use. This parameter should be set to IntPtr.EmptyParam.</param> /// <returns></returns> [DllImport("advapi32", SetLastError = true, CallingConvention = CallingConvention.StdCall)] public static extern bool SaferComputeTokenFromLevel(IntPtr levelHandle, IntPtr inAccessToken, out IntPtr outAccessToken, SaferTokenBehaviour flags, IntPtr lpReserved); /// <summary> /// The SaferCloseLevel function closes a SAFER_LEVEL_HANDLE that was opened by using the SaferIdentifyLevel function or the SaferCreateLevel function.</summary> /// <param name="levelHandle">The SAFER_LEVEL_HANDLE to be closed.</param> /// <returns>TRUE if the function succeeds; otherwise, FALSE. For extended error information, call GetLastWin32Error.</returns> [DllImport("advapi32", SetLastError = true, CallingConvention = CallingConvention.StdCall)] public static extern bool SaferCloseLevel(IntPtr levelHandle); } //class WinSafer /// <summary> /// Specifies the behaviour of the SaferComputeTokenFromLevel method /// </summary> public enum SaferTokenBehaviour : uint { /// <summary></summary> Default = 0x0, /// <summary>If the OutAccessToken parameter is not more restrictive than the InAccessToken parameter, the OutAccessToken parameter returns NULL.</summary> NullIfEqual = 0x1, /// <summary></summary> CompareOnly = 0x2, /// <summary></summary> MakeInert = 0x4, /// <summary></summary> WantFlags = 0x8 } /// <summary> /// The level of the handle to be opened. /// </summary> public enum SaferLevel : uint { /// <summary>Software will not run, regardless of the user rights of the user.</summary> Disallowed = 0, /// <summary>Allows programs to execute with access only to resources granted to open well-known groups, blocking access to Administrator and Power User privileges and personally granted rights.</summary> Untrusted = 0x1000, /// <summary>Software cannot access certain resources, such as cryptographic keys and credentials, regardless of the user rights of the user.</summary> Constrained = 0x10000, /// <summary>Allows programs to execute as a user that does not have Administrator or Power User user rights. Software can access resources accessible by normal users.</summary> NormalUser = 0x20000, /// <summary>Software user rights are determined by the user rights of the user.</summary> FullyTrusted = 0x40000 } /// <summary> /// The scope of the level to be created. /// </summary> public enum SaferLevelScope : uint { /// <summary>The created level is scoped by computer.</summary> Machine = 1, /// <summary>The created level is scoped by user.</summary> User = 2 } public enum SaferOpen : uint { Open = 1 } } //namespace PInvoke