// @pymethod (int,str,str)|win32wnet|WNetGetLastError|Retrieves extended error information set by a network provider when one of the WNet* functions fails
// @rdesc Returns the error code, a text description of the error, and the name of the network provider
// @comm The error description or the network provider name may be truncated if they exceed 1024 and 256 characters, respectively
PyObject *PyWNetGetLastError(PyObject *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ":WNetGetLastError"))
return NULL;
DWORD err, extendederr;
TCHAR errstr[1024], provider[256];
Py_BEGIN_ALLOW_THREADS
err=WNetGetLastError(&extendederr, errstr, sizeof(errstr)/sizeof(TCHAR), provider, sizeof(provider)/sizeof(TCHAR));
Py_END_ALLOW_THREADS
if (err==NO_ERROR)
return Py_BuildValue("kNN", extendederr, PyWinObject_FromTCHAR(errstr), PyWinObject_FromTCHAR(provider));
return ReturnNetError("WNetGetLastError", err);
}
int CNetWorkFinder::StartFind(LPNETRESOURCE lpnr)
{
DWORD dwResult, dwResultEnum;
HANDLE hEnum;
DWORD cbBuffer = 16384; // 16K is a good size
DWORD cEntries = (DWORD)-1; // enumerate all possible entries
LPNETRESOURCE lpnrLocal; // pointer to enumerated structures
DWORD i;
int count = 0;
//
// Call the WNetOpenEnum function to begin the enumeration.
//
dwResult = WNetOpenEnum(RESOURCE_GLOBALNET, // all network resources
RESOURCETYPE_ANY, // all resources
0, // enumerate all resources
lpnr, // NULL first time the function is called
&hEnum); // handle to the resource
TCHAR szDescription[256];
TCHAR szProvider[256];
DWORD dwWNetResult, dwLastError;
if (dwResult != NO_ERROR)
{
dwWNetResult = WNetGetLastError(&dwLastError, // error code
szDescription, // buffer for error description
sizeof(szDescription), // size of error buffer
szProvider, // buffer for provider name
sizeof(szProvider)); // size of name buffer
//
// Process errors with an application-defined error handler.
//
return count;
}
//
// Call the GlobalAlloc function to allocate resources.
//
lpnrLocal = (LPNETRESOURCE) GlobalAlloc(GPTR, cbBuffer);
if (lpnrLocal == NULL)
return count;
do
{
//
// Initialize the buffer.
//
ZeroMemory(lpnrLocal, cbBuffer);
//
// Call the WNetEnumResource function to continue
// the enumeration.
//
dwResultEnum = WNetEnumResource(hEnum, // resource handle
&cEntries, // defined locally as -1
lpnrLocal, // LPNETRESOURCE
&cbBuffer); // buffer size
//
// If the call succeeds, loop through the structures.
//
bool bRecursive = m_bRecursive;
if (dwResultEnum == NO_ERROR)
{
count += cEntries;
// Sort as per thier name as
qsort(lpnrLocal, cEntries, sizeof(NETRESOURCE),
(GenericCompareFn)CompareNetResource);
for(i = 0; i < cEntries && !m_bAborted; i++)
{
// Call callback
if (mNetWorkFindCallBack != NULL) {
switch (mNetWorkFindCallBack(lpnrLocal+i,m_pUserParam)) {
case FCB_ABORT:
m_bAborted = true;
break;
case FCB_DORECURSIVE:
bRecursive = true;
break;
case FCB_NORECURSIVE:
bRecursive = false;
break;
}
}
if (!m_bAborted && cEntries > 0 && bRecursive) {
if(RESOURCEUSAGE_CONTAINER == (lpnrLocal[i].dwUsage
& RESOURCEUSAGE_CONTAINER))
count += StartFind(&lpnrLocal[i]);
}
}
}
// Process errors.
//
else if (dwResultEnum != ERROR_NO_MORE_ITEMS)
{
break;
}
}
//
// End do.
//
while(dwResultEnum != ERROR_NO_MORE_ITEMS && !m_bAborted);
//
// Call the GlobalFree function to free the memory.
//
GlobalFree((HGLOBAL)lpnrLocal);
//
// Call WNetCloseEnum to end the enumeration.
//
dwResult = WNetCloseEnum(hEnum);
return count;
}
