8
votes

Process.Start () problème d'impersonnation

Essayer de démarrer le processus avec un autre jeton d'accès, sans succès, il fonctionne comme l'utilisateur non impressionné. XXX

Comment faire correctement ce travail?


0 commentaires

3 Réponses :


1
votes

Essayez cet exemple de http://msdn.microsoft.com/fr- US / Bibliothèque / W070T6KA.ASPX

private static void ImpersonateIdentity(IntPtr logonToken)
{
    // Retrieve the Windows identity using the specified token.
    WindowsIdentity windowsIdentity = new WindowsIdentity(logonToken);

    // Create a WindowsImpersonationContext object by impersonating the
    // Windows identity.
    WindowsImpersonationContext impersonationContext =
        windowsIdentity.Impersonate();

    Console.WriteLine("Name of the identity after impersonation: "
        + WindowsIdentity.GetCurrent().Name + ".");

    //Start your process here
    Process.Start("blabla.txt");

    Console.WriteLine(windowsIdentity.ImpersonationLevel);
    // Stop impersonating the user.
    impersonationContext.Undo();

    // Check the identity name.
    Console.Write("Name of the identity after performing an Undo on the");
    Console.WriteLine(" impersonation: " +
        WindowsIdentity.GetCurrent().Name);
}


2 commentaires

CreateProcessasasuer Impossible de démarrer des fichiers non-EXE tels que blabla.txt, cette option n'est donc pas bonne pour moi.


Je sais que c'est un peu vieux, mais vous ne pouvez pas simplement utiliser le code Keivan posté et pour la ligne de démarrage du processus Utiliser: processus.start ("NotePad.exe blabla.txt");



7
votes

Vous devez définir les propriétés ProcessStartinfo.Username et Mot de passe. Avec useshelexecute définie sur false. Si vous avez seulement un jeton, alors Pinvoke CreateProcessasuSuer ().


3 commentaires

Lors du réglage de l'userShelexecute sur FALSE, je ne peux pas démarrer des fichiers non-EXE tels que blabla.txt. Cette option n'est donc pas bonne pour moi.


Eh bien, obtenir le chemin d'accès à la .exe associé à l'extension du nom de fichier est une question totalement différente. Bien couvert par d'autres threads, pas besoin de le répéter ici. ShellexecuteEx () ne prend tout simplement pas en charge la création d'un processus avec un jeton d'utilisateur différent (restreint). Cette option n'est pas bonne pour vous.


CreateProcessasUser n'a pas non excité notifications, etc. J'ai un code hérité qui démarre un processus de remplissage de processus processstartinfo , s'abonne à " Code> et appelle processus.start ailleurs. J'essaie de porter ce code afin qu'il puisse travailler avec un jeton donné et il semble que je doive rédiger toute l'infrastructure moi-même ... un peu de travail. À moins que Keivan répond fonctionne. J'ai besoin d'essayer ça en premier.



1
votes
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.Common;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.NetworkInformation;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Security;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Principal;
using System.Security.Permissions;
using Microsoft.Win32.SafeHandles;
using System.Runtime.ConstrainedExecution;
using System.ComponentModel;

public static class ImpersonationUtils
{
    private const int SW_SHOW = 5;
    private const int TOKEN_QUERY = 0x0008;
    private const int TOKEN_DUPLICATE = 0x0002;
    private const int TOKEN_ASSIGN_PRIMARY = 0x0001;
    private const int STARTF_USESHOWWINDOW = 0x00000001;
    private const int STARTF_FORCEONFEEDBACK = 0x00000040;
    private const int CREATE_UNICODE_ENVIRONMENT = 0x00000400;
    private const int TOKEN_IMPERSONATE = 0x0004;
    private const int TOKEN_QUERY_SOURCE = 0x0010;
    private const int TOKEN_ADJUST_PRIVILEGES = 0x0020;
    private const int TOKEN_ADJUST_GROUPS = 0x0040;
    private const int TOKEN_ADJUST_DEFAULT = 0x0080;
    private const int TOKEN_ADJUST_SESSIONID = 0x0100;
    private const int STANDARD_RIGHTS_REQUIRED = 0x000F0000;
    private const int TOKEN_ALL_ACCESS =
        STANDARD_RIGHTS_REQUIRED |
        TOKEN_ASSIGN_PRIMARY |
        TOKEN_DUPLICATE |
        TOKEN_IMPERSONATE |
        TOKEN_QUERY |
        TOKEN_QUERY_SOURCE |
        TOKEN_ADJUST_PRIVILEGES |
        TOKEN_ADJUST_GROUPS |
        TOKEN_ADJUST_DEFAULT |
        TOKEN_ADJUST_SESSIONID;

    [StructLayout(LayoutKind.Sequential)]
    private struct PROCESS_INFORMATION
    {
        public IntPtr hProcess;
        public IntPtr hThread;
        public int dwProcessId;
        public int dwThreadId;
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct SECURITY_ATTRIBUTES
    {
        public int nLength;
        public IntPtr lpSecurityDescriptor;
        public bool bInheritHandle;
    }

    [StructLayout(LayoutKind.Sequential)]
    private struct STARTUPINFO
    {
        public int cb;
        public string lpReserved;
        public string lpDesktop;
        public string lpTitle;
        public int dwX;
        public int dwY;
        public int dwXSize;
        public int dwYSize;
        public int dwXCountChars;
        public int dwYCountChars;
        public int dwFillAttribute;
        public int dwFlags;
        public short wShowWindow;
        public short cbReserved2;
        public IntPtr lpReserved2;
        public IntPtr hStdInput;
        public IntPtr hStdOutput;
        public IntPtr hStdError;
    }

    private enum SECURITY_IMPERSONATION_LEVEL
    {
        SecurityAnonymous,
        SecurityIdentification,
        SecurityImpersonation,
        SecurityDelegation
    }

    private enum TOKEN_TYPE
    {
        TokenPrimary = 1,
        TokenImpersonation
    }


    enum LogonTypes : uint
    {
        Interactive = 2,
        Network = 3,
        Batch = 4,
        Service = 5,
        NetworkCleartext = 8,
        NewCredentials = 9
    }

    enum LogonProvider
    {
        LOGON32_PROVIDER_DEFAULT = 0,
        LOGON32_PROVIDER_WINNT35 = 1,
        LOGON32_PROVIDER_WINNT40 = 2,
        LOGON32_PROVIDER_WINNT50 = 3
    }

    [DllImport("advapi32.dll", SetLastError = true)]
    private static extern bool CreateProcessAsUser(
        IntPtr hToken,
        string lpApplicationName,
        string lpCommandLine,
        ref SECURITY_ATTRIBUTES lpProcessAttributes,
        ref SECURITY_ATTRIBUTES lpThreadAttributes,
        bool bInheritHandles,
        int dwCreationFlags,
        IntPtr lpEnvironment,
        string lpCurrentDirectory,
        ref STARTUPINFO lpStartupInfo,
        out PROCESS_INFORMATION lpProcessInformation);

    [DllImport("advapi32.dll", SetLastError = true)]
    private static extern bool DuplicateTokenEx(
        IntPtr hExistingToken,
        int dwDesiredAccess,
        ref SECURITY_ATTRIBUTES lpThreadAttributes,
        int ImpersonationLevel,
        int dwTokenType,
        ref IntPtr phNewToken);

    [DllImport("advapi32.dll", SetLastError = true)]
    private static extern bool OpenProcessToken(
        IntPtr ProcessHandle,
        int DesiredAccess,
        ref IntPtr TokenHandle);

    [DllImport("userenv.dll", SetLastError = true)]
    private static extern bool CreateEnvironmentBlock(
        ref IntPtr lpEnvironment,
        IntPtr hToken,
        bool bInherit);

    [DllImport("userenv.dll", SetLastError = true)]
    private static extern bool DestroyEnvironmentBlock(
        IntPtr lpEnvironment);

    [DllImport("kernel32.dll", SetLastError = true)]
    private static extern bool CloseHandle(
        IntPtr hObject);

    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
            int dwLogonType, int dwLogonProvider, out SafeTokenHandle phToken);

    [DllImport("advapi32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern bool LogonUser(String lpszUsername, String lpszDomain, String lpszPassword,
    int dwLogonType, int dwLogonProvider, ref IntPtr phToken);

    public static void LaunchProcessAsUser(string cmdLine, IntPtr token, IntPtr envBlock, int sessionId)
    {
        var pi = new PROCESS_INFORMATION();
        var saProcess = new SECURITY_ATTRIBUTES();
        var saThread = new SECURITY_ATTRIBUTES();
        saProcess.nLength = Marshal.SizeOf(saProcess);
        saThread.nLength = Marshal.SizeOf(saThread);

        var si = new STARTUPINFO();
        si.cb = Marshal.SizeOf(si);
        si.lpDesktop = @"WinSta0\Default";
        si.dwFlags = STARTF_USESHOWWINDOW | STARTF_FORCEONFEEDBACK;
        si.wShowWindow = SW_SHOW;

        if (!CreateProcessAsUser(
            token,
            null,
            cmdLine,
            ref saProcess,
            ref saThread,
            false,
            CREATE_UNICODE_ENVIRONMENT,
            envBlock,
            null,
            ref si,
            out pi))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "CreateProcessAsUser En Echec");
        }
    }

    private static IDisposable Impersonate(IntPtr token)
    {
        var identity = new WindowsIdentity(token);
        return identity.Impersonate();
    }

    private static IntPtr GetPrimaryToken(Process process)
    {
        var token = IntPtr.Zero;
        var primaryToken = IntPtr.Zero;

        if (OpenProcessToken(process.Handle, TOKEN_DUPLICATE, ref token))
        {
            var sa = new SECURITY_ATTRIBUTES();
            sa.nLength = Marshal.SizeOf(sa);

            if (!DuplicateTokenEx(
                token,
                TOKEN_ALL_ACCESS,
                ref sa,
                (int)SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation,
                (int)TOKEN_TYPE.TokenPrimary,
                ref primaryToken))
            {
                throw new Win32Exception(Marshal.GetLastWin32Error(), "DuplicateTokenEx failed");
            }

            CloseHandle(token);
        }
        else
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "OpenProcessToken failed");
        }

        return primaryToken;
    }

    public static IntPtr GetEnvironmentBlock(IntPtr token)
    {
        var envBlock = IntPtr.Zero;
        if (!CreateEnvironmentBlock(ref envBlock, token, false))
        {
            throw new Win32Exception(Marshal.GetLastWin32Error(), "CreateEnvironmentBlock failed");
        }
        return envBlock;
    }

    public static void LaunchAsCurrentUser(string cmdLine)
    {
        var process = Process.GetProcessesByName("explorer").FirstOrDefault();
        if (process != null)
        {
            var token = GetPrimaryToken(process);
            if (token != IntPtr.Zero)
            {
                var envBlock = GetEnvironmentBlock(token);
                if (envBlock != IntPtr.Zero)
                {
                    LaunchProcessAsUser(cmdLine, token, envBlock, process.SessionId);
                    if (!DestroyEnvironmentBlock(envBlock))
                    {
                        throw new Win32Exception(Marshal.GetLastWin32Error(), "DestroyEnvironmentBlock failed");
                    }
                }

                CloseHandle(token);
            }
        }
    }

    //Methode de lancement de commande impersonatée avec un user typé Domain

    public static void LaunchAsDomainUser(string cmdLine, String UserName, String Password, String Domain)
    {
        SafeTokenHandle safeTokenHandle;
        bool returnValue = LogonUser(UserName, Domain, Password,
        (int)LogonTypes.Interactive, (int)LogonProvider.LOGON32_PROVIDER_DEFAULT,
            out safeTokenHandle);

        using (WindowsIdentity newId = new WindowsIdentity(safeTokenHandle.DangerousGetHandle()))
        {
            using (WindowsImpersonationContext impersonatedUser = newId.Impersonate())
            {
                LaunchAsCurrentUser(cmdLine);
            }
        }
    }

    //Methode de lancement de commande impersonatée avec un user typé Local

    public static void LaunchAsLocalUser(string cmdLine, String UserName, String Password)
    {
        var envBlock = IntPtr.Zero;
        var token = IntPtr.Zero;

        bool returnValue = LogonUser(UserName, ".", Password,
            (int)LogonTypes.Batch, (int)LogonProvider.LOGON32_PROVIDER_DEFAULT,
            ref token);

        envBlock = ImpersonationUtils.GetEnvironmentBlock(token);
        var process = Process.GetProcessesByName("explorer").FirstOrDefault();
        LaunchProcessAsUser(cmdLine, token, envBlock, process.SessionId);
        CloseHandle(token);
    }

    //Classe de génération de handle typé SafeTokenHandle

    public sealed class SafeTokenHandle : SafeHandleZeroOrMinusOneIsInvalid
    {
        private SafeTokenHandle()
            : base(true)
        {
        }

        [DllImport("kernel32.dll")]
        [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
        [SuppressUnmanagedCodeSecurity]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool CloseHandle(IntPtr handle);

        protected override bool ReleaseHandle()
        {
            return CloseHandle(handle);
        }
    }

    public static IDisposable ImpersonateCurrentUser()
    {
        var process = Process.GetProcessesByName("explorer").FirstOrDefault();
        if (process != null)
        {
            var token = GetPrimaryToken(process);
            if (token != IntPtr.Zero)
            {
                return Impersonate(token);
            }
        }

        throw new Exception("Could not find explorer.exe");
    }
}
After this, from your page code, you can run : 
For Domain accounts : 
ImpersonationUtils.LaunchAsDomainUser("BlaBla cmd code", UserName, Password, Domain);
For Local Accounts : 
ImpersonationUtils.LaunchAsLocalUser("BlaBla cmd code", UserName, Password);
I hope it will help

1 commentaires

public static void LaunchAsDomainUser(string cmdLine, String UserName, String Password, String Domain) { SafeTokenHandle safeTokenHandle; bool retourvalue = Logonuser (nom d'utilisateur, domaine, mot de passe, (int) logontypes.batch, (int) logonprovider.logon32_provider_default, sortie de sécurité); using (WindowsIdentity newId = new WindowsIdentity(safeTokenHandle.DangerousGetHandle())) { using (WindowsImpersonationContext impersonatedUser = newId.Impersonate()) { LaunchAsCurrentUser(cmdLine); }}}