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Attualmente sto avviando processi all'interno di un sito Web asp.net utilizzando l'API di apri CreateProcessAssser. Funziona perfettamente per impersonare l'utente AD connesso.Cattura output standard da CreateProcessAsUser in C#
In qualche modo, tuttavia, la stringa di risultati dall'output della console è sempre vuota. Non riesco a trovare cosa non va. Nessun arresto anomalo o nulla solo nessuna uscita.
public static class Process
{
static readonly IntPtr INVALID_HANDLE_VALUE = (IntPtr)(-1);
static readonly HandleRef NullHandleRef = new HandleRef(null, IntPtr.Zero);
const int STD_INPUT_HANDLE = -10;
public const UInt32 Infinite = 0xffffffff;
const int STARTF_USESTDHANDLES = 0x100;
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool SetHandleInformation(IntPtr hObject, HANDLE_FLAGS dwMask, HANDLE_FLAGS dwFlags);
[DllImport("kernel32.dll", EntryPoint = "CloseHandle", SetLastError = true, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
public static extern bool CloseHandle(IntPtr handle);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern UInt32 WaitForSingleObject(IntPtr handle, UInt32 milliseconds);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern int GetConsoleOutputCP();
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr CreateNamedPipe(string name, int openMode, int pipeMode, int maxInstances, int outBufSize, int inBufSize, int timeout, IntPtr lpPipeAttributes);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr CreateFile(string lpFileName, int dwDesiredAccess, int dwShareMode, IntPtr lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, HandleRef hTemplateFile);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr GetStdHandle(int whichHandle);
[DllImport("kernel32.dll", SetLastError = true)]
public static extern bool GetExitCodeProcess(IntPtr process, ref UInt32 exitCode);
[DllImport("advapi32.dll", EntryPoint = "CreateProcessAsUser", SetLastError = true, CharSet = CharSet.Ansi,
CallingConvention = CallingConvention.StdCall)]
public static extern bool CreateProcessAsUser(IntPtr hToken, String lpApplicationName, String lpCommandLine,
ref SECURITY_ATTRIBUTES lpProcessAttributes,
ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandle,
int dwCreationFlags, IntPtr lpEnvironment,
String lpCurrentDirectory, ref STARTUPINFO lpStartupInfo,
out PROCESS_INFORMATION lpProcessInformation);
[DllImport("advapi32.dll", EntryPoint = "DuplicateTokenEx")]
public static extern bool DuplicateTokenEx(IntPtr ExistingTokenHandle, uint dwDesiredAccess,
ref SECURITY_ATTRIBUTES lpThreadAttributes, int TokenType,
int ImpersonationLevel, ref IntPtr DuplicateTokenHandle);
/// <summary>
/// This is class is designed to operate inside an ASP.NET web application.
/// The assumption is that the calling thread is operating with an impersonated security token.
/// This class will change the imperonated security token to a primary token, and call CreateProcessAsUser.
/// To use this function, the following security priviliges need to be set for the ASPNET account
/// using the local security policy MMC snap-in. CreateProcessAsUser requirement.
/// "Replace a process level token"/SE_ASSIGNPRIMARYTOKEN_NAME/SeAssignPrimaryTokenPrivilege
/// "Adjust memory quotas for a process"/SE_INCREASE_QUOTA_NAME/SeIncreaseQuotaPrivilege
/// </summary>
public static bool Start(string command, string workingDirectory)
{
bool ret;
try
{
var identity = WindowsIdentity.GetCurrent();
if (identity == null)
{
Trace.LogException("Start import conversion: Get current identity token failed", null);
return false;
}
IntPtr Token = identity.Token;
const uint GENERIC_ALL = 0x10000000;
const int SecurityImpersonation = 2;
const int TokenType = 1;
var DupedToken = new IntPtr(0);
var sa = new SECURITY_ATTRIBUTES { bInheritHandle = false };
sa.nLength = Marshal.SizeOf(sa);
sa.lpSecurityDescriptor = (IntPtr)0;
ret = DuplicateTokenEx(Token, GENERIC_ALL, ref sa, SecurityImpersonation, TokenType, ref DupedToken);
if (ret == false)
{
Trace.LogException(
"Start import conversion: DuplicateTokenEx failed with " + new Win32Exception().Message, null);
return false;
}
IntPtr stdoutReadHandle;
IntPtr stdoutWriteHandle;
IntPtr stdinHandle = GetStdHandle(STD_INPUT_HANDLE);
CreatePipe(out stdoutReadHandle, out stdoutWriteHandle, false);
SetHandleInformation(stdoutReadHandle, HANDLE_FLAGS.INHERIT, HANDLE_FLAGS.INHERIT);
var si = new STARTUPINFO();
si.cb = Marshal.SizeOf(si);
si.lpDesktop = "";
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = stdinHandle;
si.hStdOutput = stdoutWriteHandle;
si.hStdError = stdoutWriteHandle;
PROCESS_INFORMATION pi;
ret = CreateProcessAsUser(DupedToken, null, command, ref sa, ref sa, true, 0, (IntPtr)0, workingDirectory,
ref si, out pi);
UInt32 exitCode = 123456;
if (pi.hProcess != IntPtr.Zero)
{
WaitForSingleObject(pi.hProcess, 180000);
GetExitCodeProcess(pi.hProcess, ref exitCode);
}
var lastException = new Win32Exception();
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
CloseHandle(stdoutWriteHandle);
CloseHandle(stdinHandle);
var safeHandle = new SafeFileHandle(stdoutReadHandle, true);
string result;
try
{
var encoding = Encoding.GetEncoding(GetConsoleOutputCP());
var reader =
new StreamReader(
new FileStream(safeHandle, FileAccess.Read, 0x1000, true),
encoding);
result = reader.ReadToEnd();
reader.Close();
}
finally
{
if (!safeHandle.IsClosed)
{
safeHandle.Close();
}
}
if (ret == false || exitCode > 0)
{
Trace.LogException(
"Start import conversion: CreateProcessAsUser failed with " + lastException.Message + " => Exitcode: " + exitCode + " => Output: " + (string.IsNullOrEmpty(result) ? string.Empty : result), null);
return false;
}
ret = CloseHandle(DupedToken);
if (ret == false)
{
Trace.LogException("Start import conversion: Closing token failed with " + new Win32Exception().Message,
null);
}
}
catch (Exception e)
{
ret = false;
Trace.LogFatalException(e);
}
return ret;
}
private static void CreatePipe(out IntPtr parentHandle, out IntPtr childHandle, bool parentInputs)
{
string pipename = @"\\.\pipe\" + Guid.NewGuid().ToString();
parentHandle = CreateNamedPipe(pipename, 0x40000003, 0, 0xff, 0x1000, 0x1000, 0, IntPtr.Zero);
if (parentHandle == INVALID_HANDLE_VALUE)
{
throw new Win32Exception();
}
int childAcc = 0x40000000;
if (parentInputs)
{
childAcc = -2147483648;
}
childHandle = CreateFile(pipename, childAcc, 3, IntPtr.Zero, 3, 0x40000080, NullHandleRef);
if (childHandle == INVALID_HANDLE_VALUE)
{
throw new Win32Exception();
}
}
[Flags]
enum HANDLE_FLAGS
{
INHERIT = 1,
}
[StructLayout(LayoutKind.Sequential)]
public struct STARTUPINFO
{
public int cb;
public String lpReserved;
public String lpDesktop;
public String lpTitle;
public uint dwX;
public uint dwY;
public uint dwXSize;
public uint dwYSize;
public uint dwXCountChars;
public uint dwYCountChars;
public uint dwFillAttribute;
public uint dwFlags;
public short wShowWindow;
public short cbReserved2;
public IntPtr lpReserved2;
public IntPtr hStdInput;
public IntPtr hStdOutput;
public IntPtr hStdError;
}
[StructLayout(LayoutKind.Sequential)]
public struct PROCESS_INFORMATION
{
public IntPtr hProcess;
public IntPtr hThread;
public uint dwProcessId;
public uint dwThreadId;
}
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public bool bInheritHandle;
}
}