Question

如何在C＃.net中检索Windows登录SID？（不是用户SID，而是每个会话的唯一新SID）

Answer 1

我担心你不得不求助于使用P / Invoke。有一个示例如何在pinvoke.net处执行此操作（请参阅页面底部）：

Result = GetTokenInformation(WindowsIdentity.GetCurrent().Token, TOKEN_INFORMATION_CLASS.TokenSessionId , TokenInformation , TokenInfLength , out TokenInfLength );

请注意，我通过更改一行更改了示例，我将TOKEN_INFORMATION_CLASS.TokenUser替换为TOKEN_INFORMATION_CLASS.TokenSessionId，这正是您所需要的。

希望这有帮助。

更新：这是工作（至少在我的机器上）代码：

using System;
using System.Runtime.InteropServices;
using System.Security.Principal;

namespace LinqTest
{
    public class ClsLookupAccountName
    {
        public const uint SE_GROUP_LOGON_ID = 0xC0000000; // from winnt.h
        public const int TokenGroups = 2; // from TOKEN_INFORMATION_CLASS

        enum TOKEN_INFORMATION_CLASS
        {
            TokenUser = 1,
            TokenGroups,
            TokenPrivileges,
            TokenOwner,
            TokenPrimaryGroup,
            TokenDefaultDacl,
            TokenSource,
            TokenType,
            TokenImpersonationLevel,
            TokenStatistics,
            TokenRestrictedSids,
            TokenSessionId,
            TokenGroupsAndPrivileges,
            TokenSessionReference,
            TokenSandBoxInert,
            TokenAuditPolicy,
            TokenOrigin
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct SID_AND_ATTRIBUTES
        {
            public IntPtr Sid;
            public uint Attributes;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct TOKEN_GROUPS
        {
            public int GroupCount;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 1)]
            public SID_AND_ATTRIBUTES[] Groups;
        };

        // Using IntPtr for pSID instead of Byte[]
        [DllImport("advapi32", CharSet = CharSet.Auto, SetLastError = true)]
        static extern bool ConvertSidToStringSid(IntPtr pSID, out IntPtr ptrSid);

        [DllImport("kernel32.dll")]
        static extern IntPtr LocalFree(IntPtr hMem);

        [DllImport("advapi32.dll", SetLastError = true)]
        static extern bool GetTokenInformation(
            IntPtr TokenHandle,
            TOKEN_INFORMATION_CLASS TokenInformationClass,
            IntPtr TokenInformation,
            int TokenInformationLength,
            out int ReturnLength);

        public static string GetLogonId()
        {
            int TokenInfLength = 0;
            // first call gets lenght of TokenInformation
            bool Result = GetTokenInformation(WindowsIdentity.GetCurrent().Token, TOKEN_INFORMATION_CLASS.TokenGroups, IntPtr.Zero, TokenInfLength, out TokenInfLength);
            IntPtr TokenInformation = Marshal.AllocHGlobal(TokenInfLength);
            Result = GetTokenInformation(WindowsIdentity.GetCurrent().Token, TOKEN_INFORMATION_CLASS.TokenGroups, TokenInformation, TokenInfLength, out TokenInfLength);

            if (!Result)
            {
                Marshal.FreeHGlobal(TokenInformation);
                return string.Empty;
            }

            string retVal = string.Empty;
            TOKEN_GROUPS groups = (TOKEN_GROUPS)Marshal.PtrToStructure(TokenInformation, typeof(TOKEN_GROUPS));
            int sidAndAttrSize = Marshal.SizeOf(new SID_AND_ATTRIBUTES());
            for (int i = 0; i < groups.GroupCount; i++)
            {
                SID_AND_ATTRIBUTES sidAndAttributes = (SID_AND_ATTRIBUTES)Marshal.PtrToStructure(
                    new IntPtr(TokenInformation.ToInt64() + i * sidAndAttrSize + IntPtr.Size), typeof(SID_AND_ATTRIBUTES));
                if ((sidAndAttributes.Attributes & SE_GROUP_LOGON_ID) == SE_GROUP_LOGON_ID)
                {
                    IntPtr pstr = IntPtr.Zero;
                    ConvertSidToStringSid(sidAndAttributes.Sid, out pstr);
                    retVal = Marshal.PtrToStringAuto(pstr);
                    LocalFree(pstr);
                    break;
                }
            }

            Marshal.FreeHGlobal(TokenInformation);
            return retVal;
        }
    }
}

N.B。我在x64机器上测试过，所以请密切注意TokenInformation.ToInt64()段代码，也许你应该用TokenInformation.ToInt32()替换它

Answer 2

System.Security.Principal.WindowsIdentity.GetCurrent（）。User.AccountDomainSid - 可能会做到这一点？

Answer 3

我知道这是一个老帖子。刚遇到这个问题，因为我必须获得ICA会话ID和RDP会话ID才能让程序为每种类型的远程连接收集正确的变量。当前会话ID位于Regedit HKEY_CURRENT_USER \ Remote *中。由于我找不到任何WTS的替代品，我在这里发布我的解决方案。

    // Prints out ICA or RDP session ID of current user 

using System;
using Microsoft.Win32;

namespace ViaRegedit
{
    class Program03
    {
        static void Main(string[] args)
        {
            // Obtain an instance of RegistryKey for the CurrentUser registry 
            RegistryKey rkCurrentUser = Registry.CurrentUser;
            // Obtain the test key (read-only) and display it.
            RegistryKey rkTest = rkCurrentUser.OpenSubKey("Remote");
            foreach (string valueName in rkTest.GetSubKeyNames())
            {
                //Getting path to RDP/Citrix session ID
                string RDPICApath = "";
                if (rkTest.OpenSubKey(valueName) != null && rkTest.OpenSubKey(valueName) != null) { RDPICApath = rkTest.OpenSubKey(valueName).ToString(); }
                Console.WriteLine("Getting CurrentUser ICA-RDP path from string = " + RDPICApath);

                //Seperating RDPICApath to get session number
                string RDPICAnumber = RDPICApath.Substring(RDPICApath.LastIndexOf('\\') + 1);
                Console.WriteLine("Current User RDPICAnumber = " + RDPICAnumber);
            }
            rkTest.Close();
            rkCurrentUser.Close();
            Console.ReadLine();
        }
    }

}

Answer 4

我花了很长时间使用TOKEN_USER等获取SID，然后在C＃中发现了一个快捷方式。您仍然需要获取流程句柄（例如https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.process.handle?view=netcore-3.1），然后获取带有P / invoke的令牌：

OpenProcessToken(hProcess, TOKEN_READ, out IntPtr hToken))

但是一旦有了令牌，就不需要做任何令人讨厌的GetTokenInformation(hToken, TOKEN_INFORMATION_CLASS.TokenUser...事情了：

var winId = System.Security.Principal.WindowsIdentity(hToken);

...和BOOM，您可以从winId中获取用户想要的所有信息（inc SID）。

别忘了CloseHandle(hToken)之后再进行hProcess！

如何在C＃中获取登录SID

4 个答案: