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283 lines
8.6 KiB
283 lines
8.6 KiB
#include "stdafx.h"
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#include "ndispnpevent.h"
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//+---------------------------------------------------------------------------
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// Function: HrSendNdisHandlePnpEvent
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//
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// Purpose: Send to Ndis a HandlePnpEvent notification
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//
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// Parameters:
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// uiLayer - either NDIS or TDI
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// uiOperation - either BIND, RECONFIGURE, or UNBIND
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// pszUpper - a WIDE string containing the upper component name
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// pszLower - a WIDE string containing the lower component name
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// This is one of the Export names from that component
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// The values NULL and c_szEmpty are both supported
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// pmszBindList - a WIDE string containing the NULL terminiated list of strings
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// representing the bindlist, vaid only for reconfigure
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// The values NULL and c_szEmpty are both supported
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// pvData - Pointer to ndis component notification data. Content
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// determined by each component.
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// dwSizeData - Count of bytes in pvData
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//
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// Returns: HRESULT S_OK on success, HrFromLastWin32Error otherwise
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//
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// Notes: Do not use this routine directly, see...
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// HrSendNdisPnpBindOrderChange,
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// HrSendNdisPnpReconfig
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//
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HRESULT
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HrSendNdisHandlePnpEvent (
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UINT uiLayer,
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UINT uiOperation,
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PCWSTR pszUpper,
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PCWSTR pszLower,
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PCWSTR pmszBindList,
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PVOID pvData,
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DWORD dwSizeData)
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{
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UNICODE_STRING umstrBindList;
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UNICODE_STRING ustrLower;
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UNICODE_STRING ustrUpper;
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UINT nRet;
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HRESULT hr = S_OK;
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/* ASSERT(NULL != pszUpper);
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ASSERT((NDIS == uiLayer)||(TDI == uiLayer));
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ASSERT( (BIND == uiOperation) || (RECONFIGURE == uiOperation) ||
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(UNBIND == uiOperation) || (UNLOAD == uiOperation) ||
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(REMOVE_DEVICE == uiOperation));
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AssertSz( FImplies( ((NULL != pmszBindList) && (0 != lstrlenW( pmszBindList ))),
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(RECONFIGURE == uiOperation) &&
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(TDI == uiLayer) &&
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(0 == lstrlenW( pszLower ))),
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"bind order change requires a bind list, no lower, only for TDI, "
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"and with Reconfig for the operation" );*/
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// optional strings must be sent as empty strings
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//
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if (NULL == pszLower)
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{
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pszLower = c_szEmpty;
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}
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if (NULL == pmszBindList)
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{
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pmszBindList = c_szEmpty;
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}
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// build UNICDOE_STRINGs
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SetUnicodeMultiString( &umstrBindList, pmszBindList );
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SetUnicodeString( &ustrUpper, pszUpper );
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SetUnicodeString( &ustrLower, pszLower );
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/* TraceTag(ttidNetCfgPnp,
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"HrSendNdisHandlePnpEvent( layer- %d, op- %d, upper- %S, lower- %S, &bindlist- %08lx, &data- %08lx, sizedata- %d )",
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uiLayer,
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uiOperation,
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pszUpper,
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pszLower,
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pmszBindList,
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pvData,
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dwSizeData );*/
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// Now submit the notification
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nRet = NdisHandlePnPEvent( uiLayer,
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uiOperation,
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&ustrLower,
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&ustrUpper,
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&umstrBindList,
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(PVOID)pvData,
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dwSizeData );
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if (!nRet)
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{
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hr = HRESULT_FROM_WIN32(GetLastError());
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// If the transport is not started, ERROR_FILE_NOT_FOUND is expected
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// when the NDIS layer is notified. If the components of the TDI
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// layer aren't started, we get ERROR_GEN_FAILURE. We need to map
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// these to one consistent error
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if ((HRESULT_FROM_WIN32(ERROR_GEN_FAILURE) == hr) && (TDI == uiLayer))
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{
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hr = HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND);
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}
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}
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// TraceError( "HrSendNdisHandlePnpEvent",
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// HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) == hr ? S_OK : hr );
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return hr;
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}
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//+---------------------------------------------------------------------------
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// Function: HrSendNdisPnpReconfig
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//
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// Purpose: Send to Ndis a HandlePnpEvent reconfig notification
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//
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// Parameters: uiLayer - either NDIS or TDI
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// pszUpper - a WIDE string containing the upper component name
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// (typically a protocol)
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// pszLower - a WIDE string containing the lower component name
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// (typically an adapter bindname) The values NULL and
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// c_szEmpty are both supported
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// pvData - Pointer to ndis component notification data. Content
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// determined by each component.
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// dwSizeData - Count of bytes in pvData
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//
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// Returns: HRESULT S_OK on success, HrFromLastWin32Error otherwise
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//
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HRESULT
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HrSendNdisPnpReconfig (
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UINT uiLayer,
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PCWSTR pszUpper,
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PCWSTR pszLower,
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PVOID pvData,
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DWORD dwSizeData)
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{
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//ASSERT(NULL != pszUpper);
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//ASSERT((NDIS == uiLayer) || (TDI == uiLayer));
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HRESULT hr;
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tstring strLower;
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// If a lower component is specified, prefix with "\Device\" else
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// strLower's default of an empty string will be used.
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if (pszLower && *pszLower)
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{
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strLower = c_szDevice;
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strLower += pszLower;
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}
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hr = HrSendNdisHandlePnpEvent(
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uiLayer,
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RECONFIGURE,
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pszUpper,
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strLower.c_str(),
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c_szEmpty,
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pvData,
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dwSizeData);
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// TraceError("HrSendNdisPnpReconfig",
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// (HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) == hr) ? S_OK : hr);
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return hr;
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}
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//+---------------------------------------------------------------------------
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// Function: SetUnicodeString
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//
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// Purpose: given a UNICODE_STRING initialize it to the given WSTR
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//
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// Parameters:
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// pustr - the UNICODE_STRING to initialize
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// psz - the WSTR to use to initialize the UNICODE_STRING
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//
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// Notes: This differs from the RtlInitUnicodeString in that the
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// MaximumLength value contains the terminating null
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//
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void
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SetUnicodeString (
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OUT UNICODE_STRING* pustr,
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IN PCWSTR psz )
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{
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//Assert(pustr);
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//Assert(psz);
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pustr->Buffer = const_cast<PWSTR>(psz);
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pustr->Length = wcslen(psz) * sizeof(WCHAR);
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pustr->MaximumLength = pustr->Length + sizeof(WCHAR);
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}
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//+---------------------------------------------------------------------------
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// Function: SetUnicodeMultiString
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//
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// Purpose: given a UNICODE_STRING initialize it to the given WSTR
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// multi string buffer
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//
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// Parameters:
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// pustr - the UNICODE_STRING to initialize
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// pmsz - the multi sz WSTR to use to initialize the UNICODE_STRING
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//
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void
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SetUnicodeMultiString (
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OUT UNICODE_STRING* pustr,
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IN PCWSTR pmsz )
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{
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//AssertSz( pustr != NULL, "Invalid Argument" );
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//AssertSz( pmsz != NULL, "Invalid Argument" );
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pustr->Buffer = const_cast<PWSTR>(pmsz);
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ULONG cb = CchOfMultiSzAndTermSafe(pustr->Buffer) * sizeof(WCHAR);
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//Assert (cb <= USHRT_MAX);
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pustr->Length = (USHORT)cb;
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pustr->MaximumLength = pustr->Length;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CchOfMultiSzAndTermSafe
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//
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// Purpose: Count the number of characters of a double NULL terminated
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// multi-sz, including all NULLs.
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//
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// Arguments:
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// pmsz [in] The multi-sz to count characters for.
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//
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// Returns: The count of characters.
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//
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// Author: tongl 17 June 1997
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//
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// Notes:
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//
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ULONG
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CchOfMultiSzAndTermSafe (
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IN PCWSTR pmsz)
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{
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// NULL strings have zero length by definition.
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if (!pmsz)
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return 0;
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// Return the count of characters plus room for the
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// extra null terminator.
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return CchOfMultiSzSafe (pmsz) + 1;
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}
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//+---------------------------------------------------------------------------
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//
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// Function: CchOfMultiSzSafe
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//
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// Purpose: Count the number of characters of a double NULL terminated
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// multi-sz, including all NULLs except for the final terminating
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// NULL.
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//
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// Arguments:
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// pmsz [in] The multi-sz to count characters for.
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//
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// Returns: The count of characters.
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//
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// Author: tongl 17 June 1997
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//
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// Notes:
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//
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ULONG
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CchOfMultiSzSafe (
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IN PCWSTR pmsz)
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{
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// NULL strings have zero length by definition.
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if (!pmsz)
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return 0;
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ULONG cchTotal = 0;
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ULONG cch;
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while (*pmsz)
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{
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cch = wcslen (pmsz) + 1;
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cchTotal += cch;
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pmsz += cch;
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}
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// Return the count of characters.
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return cchTotal;
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}
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