Thema: Delphi LDAP SID ermitteln

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cst_07

Registriert seit: 29. Nov 2007
34 Beiträge
 
#7

Re: LDAP SID ermitteln

  Alt 2. Feb 2009, 17:07
Hi,

vielen vielen Dank für die guten Ratschläge. Leider haut das noch nicht so ganz hin. Ich habe aber eine Funktion bei msdn gefunden, die das macht was ich brächte . Leider ist diese jedoch in c++ geschrieben. Kann das vielleicht jemand in delphi konvertieren?

Hier der Code
Code:
HRESULT VariantArrayToBytes(VARIANT Variant,
                            LPBYTE *ppBytes,
                            DWORD *pdwBytes);

/********************************************************************

    GetLDAPSidBindStringFromVariantSID()

    Converts a SID in VARIANT form, such as an objectSid value,
    and converts it into a bindale string in the form:

    LDAP://<SID=xxxxxxx...>

    The returned string is allocated with AllocADsMem and must
    be freed by the caller with FreADsMem.

*******************************************************************/

LPWSTR GetLDAPSidBindStringFromVariantSID(VARIANT vSID)
{
    LPWSTR pwszReturn = NULL;

    if(vSID.vt != VT_EMPTY)
    {
        HRESULT hr;
        LPBYTE pByte;
        DWORD dwBytes = 0;

        hr = VariantArrayToBytes(vSID, &pByte, &dwBytes);
        if(S_OK == hr)
        {
            // Convert the BYTE array into a string of
            // hex characters.
            CComBSTR sbstrTemp = "LDAP://<SID=";

            for(DWORD i = 0; i < dwBytes; i++)
            {
                WCHAR wszByte[3];

                swprintf_s(wszByte, L"%02x", pByte[i]);
                sbstrTemp += wszByte;
            }

            sbstrTemp += ">";
            pwszReturn =
              (LPWSTR)AllocADsMem((sbstrTemp.Length() + 1) * 
                                   sizeof(WCHAR));
            if(pwszReturn)
            {
                wcscpy_s(pwszReturn, sbstrTemp.m_str);
            }

            FreeADsMem(pByte);
        }
    }

    return pwszReturn;
}

/******************************************************************

    VariantArrayToBytes()

    This function converts a VARIANT array into an array of BYTES.
    This function allocates the buffer using AllocADsMem. The caller
    must free this memory with FreeADsMem when it is no longer
    required.

******************************************************************/

HRESULT VariantArrayToBytes(VARIANT Variant,
                            LPBYTE *ppBytes,
                            DWORD *pdwBytes)
{
    if(!(Variant.vt & VT_ARRAY) ||
        !Variant.parray ||
        !ppBytes ||
        !pdwBytes)
    {
        return E_INVALIDARG;
    }

    *ppBytes = NULL;
    *pdwBytes = 0;

    HRESULT hr = E_FAIL;
    SAFEARRAY *pArrayVal = NULL;
    CHAR HUGEP *pArray = NULL;
   
    // Retrieve the safe array.
    pArrayVal = Variant.parray;
    DWORD dwBytes = pArrayVal->rgsabound[0].cElements;
    *ppBytes = (LPBYTE)AllocADsMem(dwBytes);
    if(NULL == *ppBytes)
    {
        return E_OUTOFMEMORY;
    }

    hr = SafeArrayAccessData(pArrayVal, (void HUGEP * FAR *) &pArray);
    if(SUCCEEDED(hr))
    {
        // Copy the bytes to the safe array.
        CopyMemory(*ppBytes, pArray, dwBytes);
        SafeArrayUnaccessData( pArrayVal );
        *pdwBytes = dwBytes;
    }
   
    return hr;
}
Hier gibts nochmal eine Beschreibung zu dem Artikel bei msdn
http://msdn.microsoft.com/en-us/library/ms676319(VS.85).aspx
  Mit Zitat antworten Zitat