public extern static bool DuplicateTokenEx(
IntPtr hExistingToken,
Windows_h.TokenAccessFlags dwDesiredAccess,
IntPtr lpThreadAttributes,
Windows_h.SECURITY_IMPERSONATION_LEVEL ImpersonationLevel,
Windows_h.TOKEN_TYPE TokenType,
out IntPtr phNewToken);
public static extern bool OpenProcessToken(IntPtr ProcessHandle,
Windows_h.TokenAccessFlags DesiredAccess, out IntPtr TokenHandle);
public static Process RunAsDesktopUser(string path, string args)
{
int lastError;
IntPtr shellWindow = User32.GetShellWindow();
if (shellWindow == IntPtr.Zero)
{
throw new InvalidOperationException("Unable to get shell window.");
}
uint processID = 0;
User32.GetWindowThreadProcessId(shellWindow, out processID);
if (processID == 0)
{
lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
IntPtr processHandle = Kernel32.OpenProcess(Windows_h.ProcessAccessFlags.QueryInformation, true, processID);
if (processHandle == IntPtr.Zero)
{
lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
IntPtr shellProcessToken;
Windows_h.TokenAccessFlags tokenAccess = Windows_h.TokenAccessFlags.TOKEN_QUERY | Windows_h.TokenAccessFlags.TOKEN_ASSIGN_PRIMARY |
Windows_h.TokenAccessFlags.TOKEN_DUPLICATE | Windows_h.TokenAccessFlags.TOKEN_ADJUST_DEFAULT |
Windows_h.TokenAccessFlags.TOKEN_ADJUST_SESSIONID;
if (!Advapi32.OpenProcessToken(processHandle, tokenAccess, out shellProcessToken))
{
lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
IntPtr newPrimaryToken;
if (!Advapi32.DuplicateTokenEx(shellProcessToken, tokenAccess, IntPtr.Zero,
Windows_h.SECURITY_IMPERSONATION_LEVEL.SecurityImpersonation, Windows_h.TOKEN_TYPE.TokenPrimary, out newPrimaryToken))
{
lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
Windows_h.STARTUPINFO startupInfo = new Windows_h.STARTUPINFO();
startupInfo.cb = System.Runtime.InteropServices.Marshal.SizeOf(startupInfo);
startupInfo.lpDesktop = "";
Windows_h.PROCESS_INFORMATION processInfo = new Windows_h.PROCESS_INFORMATION();
if (!Advapi32.CreateProcessAsUserW(newPrimaryToken, path, path + " " + args, IntPtr.Zero, IntPtr.Zero, false, 0,
IntPtr.Zero, null, ref startupInfo, out processInfo))
{
lastError = System.Runtime.InteropServices.Marshal.GetLastWin32Error();
throw new Win32Exception(lastError);
}
Kernel32.CloseHandle(processInfo.hProcess);
Kernel32.CloseHandle(processInfo.hThread);
return(Process.GetProcessById(processInfo.dwProcessId));
}
