Need to retrieve all groups a user belongs to... in C++ - c++

Question

I need to find all the groups a particular user is a member of. I'm using C++, not Powershell, if this is the wrong forum I apologize.
From what I've found on the web I need to retrieve the memberOf property, but I get an error that the property doesn't exist. Any help would be appreciated. Here's the code:
HRESULT hrObj = E_FAIL;
HRESULT hr = E_FAIL;
ADS_SEARCHPREF_INFO SearchPrefs;
// COL for iterations
ADS_SEARCH_COLUMN col;
// Handle used for searching
ADS_SEARCH_HANDLE hSearch;
// Search entire subtree from root.
SearchPrefs.dwSearchPref = ADS_SEARCHPREF_SEARCH_SCOPE;
SearchPrefs.vValue.dwType = ADSTYPE_INTEGER;
SearchPrefs.vValue.Integer = ADS_SCOPE_SUBTREE;
// Set the search preference.
DWORD dwNumPrefs = 1;
hr = pSearchBase->SetSearchPreference(&SearchPrefs, dwNumPrefs);
if (FAILED(hr))
{
return hr;
}
// Create search filter.
LPWSTR pszFormat = L"(&(objectCategory=person)(objectClass=user)(sAMAccountName=%s))";
int len = wcslen(pszFormat) + wcslen(szFindUser) + 1;
LPWSTR pszSearchFilter = new WCHAR[len];
if(NULL == pszSearchFilter)
{
return E_OUTOFMEMORY;
}
swprintf_s(pszSearchFilter, len, pszFormat, szFindUser);
// Set attributes to return.
LPWSTR pszAttribute[NUM_ATTRIBUTES] = {L"ADsPath"};
// Execute the search.
hr = pSearchBase->ExecuteSearch(pszSearchFilter,
pszAttribute,
NUM_ATTRIBUTES,
&hSearch);
if (SUCCEEDED(hr))
{
// Call IDirectorySearch::GetNextRow() to retrieve the next row of data.
while(pSearchBase->GetNextRow(hSearch) != S_ADS_NOMORE_ROWS)
{
// Loop through the array of passed column names and
// print the data for each column.
for (DWORD x = 0; x < NUM_ATTRIBUTES; x++)
{
// Get the data for this column.
hr = pSearchBase->GetColumn(hSearch, pszAttribute[x], &col);
if (SUCCEEDED(hr))
{
// Print the data for the column and free the column.
// Be aware that the requested attribute is type CaseIgnoreString.
if (ADSTYPE_CASE_IGNORE_STRING == col.dwADsType)
{
IADs *pADS;
hr = ADsOpenObject( col.pADsValues->CaseIgnoreString,
L"Administrator",
L"passW0rd",
ADS_SECURE_AUTHENTICATION,
IID_IADs,
(void**)&pADS);
VARIANT var;
VariantInit(&var);
if (SUCCEEDED(hr))
{
hr = pADS->GetEx(L"memberOf", &var); <-- FAILS!!!
wprintf(L"Found User.\n",szFindUser);
wprintf(L"%s: %s\r\n",pszAttribute[x],col.pADsValues->CaseIgnoreString);
hrObj = S_OK;
}
}
pSearchBase->FreeColumn( &col );
}
else
{
hr = E_FAIL;
}
}
}
// Close the search handle to cleanup.
pSearchBase->CloseSearchHandle(hSearch);
}
delete pszSearchFilter;
if (FAILED(hrObj))
{
hr = hrObj;
}

Answer 1

Unless you're set on using AD directly, it's probably easier to use the Windows Net* functions for the job:
#include <windows.h>
#include <lm.h>
#include <stdio.h>
int main() {
wchar_t user[256];
DWORD size = sizeof(user)/sizeof(user[0]);
GetUserNameW(user, &size);
printf("User: %S\n", user);
printf("Local groups: \n");
LPBYTE buffer;
DWORD entries, total_entries;
NetUserGetLocalGroups(NULL, user, 0, LG_INCLUDE_INDIRECT, &buffer, MAX_PREFERRED_LENGTH, &entries, &total_entries);
LOCALGROUP_USERS_INFO_0 *groups = (LOCALGROUP_USERS_INFO_0*)buffer;
for (int i=0; i<entries; i++)
printf("\t%S\n", groups[i].lgrui0_name);
NetApiBufferFree(buffer);
printf("Global groups: \n");
NetUserGetGroups(NULL, user, 0, &buffer, MAX_PREFERRED_LENGTH, &entries, &total_entries);
GROUP_USERS_INFO_0 *ggroups = (GROUP_USERS_INFO_0*)buffer;
for (int i=0; i<entries; i++)
printf("\t%S\n", ggroups[i].grui0_name);
NetApiBufferFree(buffer);
return 0;
}

Answer 2

Thanks for the reply, I think I found what I was looking for in MSDN.
HRESULT CheckUserGroups(IADsUser *pUser)
{
IADsMembers *pGroups;
HRESULT hr = S_OK;
hr = pUser->Groups(&pGroups);
pUser->Release();
if (FAILED(hr)) return hr;
IUnknown *pUnk;
hr = pGroups->get__NewEnum(&pUnk);
if (FAILED(hr)) return hr;
pGroups->Release();
IEnumVARIANT *pEnum;
hr = pUnk->QueryInterface(IID_IEnumVARIANT,(void**)&pEnum);
if (FAILED(hr)) return hr;
pUnk->Release();
// Enumerate.
BSTR bstr;
VARIANT var;
IADs *pADs;
ULONG lFetch;
IDispatch *pDisp;
VariantInit(&var);
hr = pEnum->Next(1, &var, &lFetch);
while(hr == S_OK)
{
if (lFetch == 1)
{
pDisp = V_DISPATCH(&var);
pDisp->QueryInterface(IID_IADs, (void**)&pADs);
pADs->get_Name(&bstr);
printf("Group belonged: %S\n",bstr);
SysFreeString(bstr);
pADs->Release();
}
VariantClear(&var);
pDisp=NULL;
hr = pEnum->Next(1, &var, &lFetch);
};
hr = pEnum->Release();
return S_OK;
}