/*++
Copyright (c) 1996-1997 Microsoft Corporation
Module Name:
apiutil.c
Abstract:
This module contains the traffic control api utils
Author:
Jim Stewart ( jstew ) August 22, 1996
Revision History:
Ofer Bar (oferbar) Oct 1, 1997
--*/
#include "precomp.h"
#pragma hdrstop
#include <initguid.h>
#define INITGUID
#include "ntddtc.h"
static BOOLEAN _init = FALSE;
#if 0
// Name of the DLL to load
const CHAR IpHlpApiDllName[] = "iphlpapi";
// Names of the functions called in IPHLPAPI
const CHAR GET_IF_ENTRY[] = "GetIfEntry";
const CHAR GET_IP_ADDR_TABLE[] = "GetIpAddrTable";
const CHAR GET_BEST_ROUTE[] = "GetBestRoute";
IPROUTE_IF IpRouteTab;
#endif
TCHAR SzBuf[MAX_PATH];
//
VOID
MarkAllNodesForClosing(
PINTERFACE_STRUC pInterface,
STATE stateToMark
)
/*++
Description:
This routine will mark all flows and filters on a INTERFACE_STRUC (a client's interface struct)
as close FORCED_KERNELCLOSE or EXIT_CLEANUP. Please note that it is already called with the global lock held.
Arguments:
pInterface - ptr to the interface
stateToMark - the state to mark the nodes (FORCED_KERNELCLOSE or EXIT_CLEANUP)
Return Value:
nothing
--*/
{
PLIST_ENTRY pEntry, pFilterEntry;
PFLOW_STRUC pFlow;
PFILTER_STRUC pFilter;
ASSERT((stateToMark == FORCED_KERNELCLOSE) || (stateToMark == EXIT_CLEANUP));
pEntry = pInterface->FlowList.Flink;
while (pEntry != &pInterface->FlowList) {
pFlow = CONTAINING_RECORD(pEntry, FLOW_STRUC, Linkage);
//
// For each flow and filter, first check if the user is trying to close it
// if that is the case, do nothing, otherwise, mark it
GetLock(pFlow->Lock);
if (QUERY_STATE(pFlow->State) == OPEN) {
// Cleanup from under teh user...
SET_STATE(pFlow->State, stateToMark);
} else {
ASSERT(IsListEmpty(&pFlow->FilterList));
// There's nothing to be done here.
IF_DEBUG(WARNINGS) {
WSPRINT(("Against a forced close - Flow is removed by the user\n", pFlow));
}
}
pFilterEntry = pFlow->FilterList.Flink;
while (pFilterEntry != &pFlow->FilterList) {
pFilter = CONTAINING_RECORD(pFilterEntry, FILTER_STRUC, Linkage);
GetLock(pFilter->Lock);
if (QUERY_STATE(pFilter->State) == OPEN) {
// Cleanup from under teh user...
SET_STATE(pFilter->State, stateToMark);
} else {
// There's nothing to be done here.
IF_DEBUG(WARNINGS) {
WSPRINT(("Against a forced close - Filter is removed by the user\n", pFilter));
}
}
pFilterEntry = pFilterEntry->Flink;
FreeLock(pFilter->Lock);
}
pEntry = pEntry->Flink;
FreeLock(pFlow->Lock);
}
}
VOID
CloseOpenFlows(
IN PINTERFACE_STRUC pInterface
)
/*++
Description:
This routine closes any flows that are open on an interface.
Arguments:
pInterface - ptr to the interface
Return Value:
nothing
--*/
{
DWORD Status = NO_ERROR;
PLIST_ENTRY pEntry;
PFLOW_STRUC pFlow;
GetLock( pGlobals->Lock );
pEntry = pInterface->FlowList.Flink;
while (pEntry != &pInterface->FlowList) {
pFlow = CONTAINING_RECORD( pEntry, FLOW_STRUC, Linkage );
GetLock(pFlow->Lock);
if ((QUERY_STATE(pFlow->State) == FORCED_KERNELCLOSE) ||
(QUERY_STATE(pFlow->State) == EXIT_CLEANUP)) {
pEntry = pEntry->Flink;
FreeLock(pFlow->Lock);
IF_DEBUG(SHUTDOWN) {
WSPRINT(( "Closing Flow: 0x%X\n", pFlow));
}
Status = DeleteFlow( pFlow, TRUE );
IF_DEBUG(SHUTDOWN) {
WSPRINT(("CloseOpenFlows: DeleteFlow returned=0x%X\n",
Status));
}
} else {
pEntry = pEntry->Flink;
FreeLock(pFlow->Lock);
}
}
FreeLock( pGlobals->Lock );
}
VOID
CloseOpenFilters(
IN PFLOW_STRUC pFlow
)
/*++
Description:
This routine closes any filters that are open on a flow.
Arguments:
pFlow - ptr to the flow
Return Value:
nothing
--*/
{
DWORD Status = NO_ERROR;
PLIST_ENTRY pEntry;
PFILTER_STRUC pFilter;
IF_DEBUG(SHUTDOWN) {
WSPRINT(( "CloseOpenFilters: Closing all Open Filters\n" ));
}
GetLock( pGlobals->Lock );
pEntry = pFlow->FilterList.Flink;
while (pEntry != &pFlow->FilterList) {
pFilter = CONTAINING_RECORD( pEntry, FILTER_STRUC, Linkage );
GetLock(pFilter->Lock);
if ((QUERY_STATE(pFilter->State) == FORCED_KERNELCLOSE) ||
(QUERY_STATE(pFilter->State) == EXIT_CLEANUP)) {
// we can take a ref here, but we own it anyways!
pEntry = pEntry->Flink;
FreeLock(pFilter->Lock);
Status = DeleteFilter( pFilter );
IF_DEBUG(SHUTDOWN) {
WSPRINT(( "CloseOpenFilters: DeleteFilter returned=0x%X\n",
Status));
}
//ASSERT(Status == NO_ERROR);
} else {
pEntry = pEntry->Flink;
FreeLock(pFilter->Lock);
IF_DEBUG(SHUTDOWN) {
WSPRINT(( "CloseOpenFilters: DeleteFilter (%x) was skipped because its state (%d)\n",
pFilter, pFilter->State));
}
}
}
FreeLock( pGlobals->Lock );
}
VOID
DeleteFlowStruc(
IN PFLOW_STRUC pFlow
)
/*++
Description:
This routine frees the handle and memory associated
with the structure.
Arguments:
pFlow - ptr to the flow
Return Value:
nothing
--*/
{
if(pFlow->PendingEvent)
CloseHandle(pFlow->PendingEvent);
DeleteLock(pFlow->Lock);
if (pFlow->pGenFlow) {
FreeMem(pFlow->pGenFlow);
pFlow->GenFlowLen = 0;
}
if (pFlow->pGenFlow1) {
FreeMem(pFlow->pGenFlow1);
pFlow->GenFlowLen1 = 0;
}
if (pFlow->pClassMapFlow)
FreeMem(pFlow->pClassMapFlow);
if (pFlow->pClassMapFlow1)
FreeMem(pFlow->pClassMapFlow1);
FreeMem(pFlow);
}
VOID
DeleteFilterStruc(
IN PFILTER_STRUC pFilter
)
/*++
Description:
This routine frees the handle and memory associated
with the structure.
Arguments:
pFIlter
Return Value:
nothing
--*/
{
if (pFilter->pGpcFilter)
FreeMem(pFilter->pGpcFilter);
DeleteLock(pFilter->Lock);
FreeMem(pFilter);
}
PTC_IFC
GetTcIfc(
IN LPWSTR pInterfaceName
)
{
PTC_IFC pIfc = NULL;
PLIST_ENTRY pHead, pEntry;
DWORD Status = NO_ERROR;
GetLock(pGlobals->Lock);
pHead = &pGlobals->TcIfcList;
pEntry = pHead->Flink;
while (pEntry != pHead && pIfc == NULL) {
pIfc = CONTAINING_RECORD(pEntry, TC_IFC, Linkage);
__try {
if (wcsncmp(pInterfaceName,
pIfc->InstanceName,
wcslen(pIfc->InstanceName)) != 0) {
//
// not found
//
pIfc = NULL;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("GetTcIfc: Invalid pInterfaceName(%x) Exception: = 0x%X\n",
pInterfaceName, Status ));
}
FreeLock(pGlobals->Lock);
return NULL;
}
pEntry = pEntry->Flink;
}
FreeLock(pGlobals->Lock);
return pIfc;
}
PTC_IFC
GetTcIfcWithRef(
IN LPWSTR pInterfaceName,
IN ULONG RefType
)
{
PTC_IFC pIfc = NULL;
PLIST_ENTRY pHead, pEntry;
DWORD Status = NO_ERROR;
GetLock(pGlobals->Lock);
pHead = &pGlobals->TcIfcList;
pEntry = pHead->Flink;
while (pEntry != pHead && pIfc == NULL) {
pIfc = CONTAINING_RECORD(pEntry, TC_IFC, Linkage);
__try {
if (wcsncmp(pInterfaceName,
pIfc->InstanceName,
wcslen(pIfc->InstanceName)) != 0) {
//
// not found
//
pIfc = NULL;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("GetTcIfc: Invalid pInterfaceName(%x) Exception: = 0x%X\n",
pInterfaceName, Status ));
}
FreeLock(pGlobals->Lock);
return NULL;
}
pEntry = pEntry->Flink;
}
if (pIfc) {
GetLock(pIfc->Lock);
if (QUERY_STATE(pIfc->State)== OPEN) {
FreeLock(pIfc->Lock);
REFADD(&pIfc->RefCount, RefType);
FreeLock(pGlobals->Lock);
return pIfc;
} else {
FreeLock(pIfc->Lock);
FreeLock(pGlobals->Lock);
return NULL;
}
} else {
FreeLock(pGlobals->Lock);
return NULL;
}
}
DWORD
UpdateTcIfcList(
IN LPWSTR InstanceName,
IN ULONG IndicationBufferSize,
IN PTC_INDICATION_BUFFER IndicationBuffer,
IN DWORD IndicationCode
)
{
DWORD Status = NO_ERROR;
PTC_IFC pTcIfc;
ULONG l;
PADDRESS_LIST_DESCRIPTOR pAddrListDesc;
switch (IndicationCode) {
case TC_NOTIFY_IFC_UP:
//
// Allocate a new interface descriptor structure
//
l = IndicationBufferSize
- FIELD_OFFSET(TC_INDICATION_BUFFER,InfoBuffer) - FIELD_OFFSET(TC_SUPPORTED_INFO_BUFFER, AddrListDesc);
CreateKernelInterfaceStruc(&pTcIfc, l);
if (pTcIfc) {
//
// copy the instance name string data
//
wcscpy(pTcIfc->InstanceName, InstanceName);
pTcIfc->InstanceNameLength = wcslen(InstanceName) * sizeof(WCHAR);
//
// copy the instance ID string data
//
pTcIfc->InstanceIDLength = IndicationBuffer->InfoBuffer.InstanceIDLength;
memcpy((PVOID)pTcIfc->InstanceID,
(PVOID)IndicationBuffer->InfoBuffer.InstanceID,
pTcIfc->InstanceIDLength);
pTcIfc->InstanceID[pTcIfc->InstanceIDLength/sizeof(WCHAR)] = L'\0';
//
// copy the instance data
// in this case - the network address
//
pTcIfc->AddrListBytesCount = l;
RtlCopyMemory( pTcIfc->pAddressListDesc,
&IndicationBuffer->InfoBuffer.AddrListDesc,
l );
if (NO_ERROR != GetInterfaceIndex(pTcIfc->pAddressListDesc,
&pTcIfc->InterfaceIndex,
&pTcIfc->SpecificLinkCtx)) {
pTcIfc->InterfaceIndex = IF_UNKNOWN;
pTcIfc->SpecificLinkCtx = IF_UNKNOWN;
}
//
//
// Add the structure to the global linked list
//
GetLock(pTcIfc->Lock);
SET_STATE(pTcIfc->State, OPEN);
FreeLock(pTcIfc->Lock);
GetLock( pGlobals->Lock );
InsertTailList(&pGlobals->TcIfcList, &pTcIfc->Linkage );
FreeLock( pGlobals->Lock );
#if 0
//
// there's a new TC inetrface, check the GPC client list
//
OpenGpcClients(pTcIfc);
#endif
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
break;
case TC_NOTIFY_IFC_CLOSE:
pTcIfc = GetTcIfc(InstanceName);
REFDEL(&pTcIfc->RefCount, 'KIFC');
break;
case TC_NOTIFY_IFC_CHANGE:
pTcIfc = GetTcIfc(InstanceName);
if (pTcIfc == NULL) {
return Status;
}
//
// copy the instance ID string data
//
pTcIfc->InstanceIDLength = IndicationBuffer->InfoBuffer.InstanceIDLength;
memcpy(pTcIfc->InstanceID,
IndicationBuffer->InfoBuffer.InstanceID,
pTcIfc->InstanceIDLength);
pTcIfc->InstanceID[pTcIfc->InstanceIDLength/sizeof(WCHAR)] = L'\0';
l = IndicationBufferSize
- FIELD_OFFSET(TC_INDICATION_BUFFER,InfoBuffer) - FIELD_OFFSET(TC_SUPPORTED_INFO_BUFFER, AddrListDesc);
AllocMem(&pAddrListDesc, l);
if (pAddrListDesc) {
//
// copy the instance data
// in this case - the network address
//
RtlCopyMemory( pAddrListDesc,
&IndicationBuffer->InfoBuffer.AddrListDesc,
l );
GetLock( pGlobals->Lock );
FreeMem(pTcIfc->pAddressListDesc);
pTcIfc->AddrListBytesCount = l;
pTcIfc->pAddressListDesc = pAddrListDesc;
if (NO_ERROR != GetInterfaceIndex(pTcIfc->pAddressListDesc,
&pTcIfc->InterfaceIndex,
&pTcIfc->SpecificLinkCtx)) {
pTcIfc->InterfaceIndex = IF_UNKNOWN;
pTcIfc->SpecificLinkCtx = IF_UNKNOWN;
}
FreeLock( pGlobals->Lock );
#if 0
//
// there's a new addr list, check the GPC client list
//
OpenGpcClients(pTcIfc);
#endif
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
break;
default:
ASSERT(0);
}
return Status;
}
DWORD
CreateClientStruc(
IN HANDLE ClRegCtx,
OUT PCLIENT_STRUC *ppClient
)
{
PCLIENT_STRUC pClient;
DWORD Status = NO_ERROR;
AllocMem(&pClient, sizeof(CLIENT_STRUC));
if (pClient != NULL) {
RtlZeroMemory(pClient, sizeof(CLIENT_STRUC));
//
// acquire a new handle for the client
//
pClient->ClHandle = AllocateHandle((PVOID)pClient);
//
// set the other parameters in the client interface
//
pClient->ObjectType = ENUM_CLIENT_TYPE;
pClient->ClRegCtx = ClRegCtx;
InitializeListHead(&pClient->InterfaceList);
ReferenceInit(&pClient->RefCount, pClient, DereferenceClient);
REFADD(&pClient->RefCount, 'CLNT');
__try {
InitLock(pClient->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
FreeMem(pClient);
return Status;
}
SET_STATE(pClient->State, INSTALLING);
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
*ppClient = pClient;
return Status;
}
DWORD
CreateClInterfaceStruc(
IN HANDLE ClIfcCtx,
OUT PINTERFACE_STRUC *ppClIfc
)
{
PINTERFACE_STRUC pClIfc;
DWORD Status = NO_ERROR;
AllocMem(&pClIfc, sizeof(INTERFACE_STRUC));
if (pClIfc != NULL) {
RtlZeroMemory(pClIfc, sizeof(INTERFACE_STRUC));
if ((pClIfc->IfcEvent = CreateEvent( NULL, // pointer to security attributes
TRUE, // flag for manual-reset event
FALSE, // flag for initial state
NULL // pointer to event-object name);
)) == NULL) {
Status = GetLastError();
IF_DEBUG(ERRORS) {
WSPRINT(( "Error Creating Event for Interface: 0x%X:%d\n", pClIfc, Status));
}
FreeMem(pClIfc);
return Status;
}
//
// acquire a new handle for the client
//
GetLock(pGlobals->Lock);
pClIfc->ClHandle = AllocateHandle((PVOID)pClIfc);
FreeLock(pGlobals->Lock);
//
// set the other parameters in the client interface
//
pClIfc->ObjectType = ENUM_INTERFACE_TYPE;
pClIfc->ClIfcCtx = ClIfcCtx;
pClIfc->CallbackThreadId = 0;
ReferenceInit(&pClIfc->RefCount, pClIfc, DereferenceInterface);
REFADD(&pClIfc->RefCount, 'CIFC');
InitializeListHead(&pClIfc->FlowList);
__try {
InitLock(pClIfc->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
FreeMem(pClIfc);
return Status;
}
SET_STATE(pClIfc->State, INSTALLING);
pClIfc->Flags = 0; // reset flags
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
*ppClIfc = pClIfc;
return Status;
}
DWORD
CreateKernelInterfaceStruc(
OUT PTC_IFC *ppTcIfc,
IN DWORD AddressLength
)
{
PTC_IFC pTcIfc;
DWORD Status = NO_ERROR;
IF_DEBUG(CALLS) {
WSPRINT(("==> CreateKernelInterfaceStruc: AddressLength %d\n", AddressLength));
}
*ppTcIfc = NULL;
AllocMem(&pTcIfc, sizeof(TC_IFC));
if (pTcIfc) {
RtlZeroMemory(pTcIfc, sizeof(TC_IFC));
AllocMem(&pTcIfc->pAddressListDesc, AddressLength);
if (pTcIfc->pAddressListDesc) {
RtlZeroMemory(pTcIfc->pAddressListDesc, AddressLength);
//
// initialize the new structure
//
ReferenceInit(&pTcIfc->RefCount, pTcIfc, DereferenceKernelInterface);
REFADD(&pTcIfc->RefCount, 'KIFC');
SET_STATE(pTcIfc->State, INSTALLING);
__try {
InitLock(pTcIfc->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
FreeMem(pTcIfc->pAddressListDesc);
FreeMem(pTcIfc);
return Status;
}
InitializeListHead(&pTcIfc->ClIfcList);
} else {
FreeMem(pTcIfc);
Status = ERROR_NOT_ENOUGH_MEMORY;
return Status;
}
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
return Status;
}
*ppTcIfc = pTcIfc;
IF_DEBUG(CALLS) {
WSPRINT(("==> CreateKernelInterfaceStruc: Status%d\n", Status));
}
return Status;
}
DWORD
DereferenceKernelInterface(
PTC_IFC pTcIfc
)
{
DWORD Status = NO_ERROR;
IF_DEBUG(CALLS) {
WSPRINT(("==> DereferenceKernelInterfaceStruc: %X\n", pTcIfc));
}
ASSERT(pTcIfc);
ASSERT( IsListEmpty( &pTcIfc->ClIfcList ) );
GetLock( pGlobals->Lock );
RemoveEntryList(&pTcIfc->Linkage);
FreeLock( pGlobals->Lock );
DeleteLock(pTcIfc->Lock);
FreeMem(pTcIfc->pAddressListDesc);
FreeMem(pTcIfc);
IF_DEBUG(CALLS) {
WSPRINT(("==> DereferenceKernelInterfaceStruc: %d\n", Status));
}
return Status;
}
DWORD
CreateFlowStruc(
IN HANDLE ClFlowCtx,
IN PTC_GEN_FLOW pGenFlow,
OUT PFLOW_STRUC *ppFlow
)
{
PFLOW_STRUC pFlow;
DWORD Status = NO_ERROR;
ULONG l;
PUCHAR pCurrentObject;
LONG BufRemaining;
*ppFlow = NULL;
__try {
pCurrentObject = (PUCHAR) pGenFlow->TcObjects;
BufRemaining = pGenFlow->TcObjectsLength;
while ((BufRemaining > 0) && (((QOS_OBJECT_HDR*)pCurrentObject)->ObjectType != QOS_OBJECT_END_OF_LIST))
{
BufRemaining -= ((QOS_OBJECT_HDR*)pCurrentObject)->ObjectLength;
pCurrentObject = pCurrentObject + ((QOS_OBJECT_HDR*)pCurrentObject)->ObjectLength;
}
if (BufRemaining < 0)
return (ERROR_TC_OBJECT_LENGTH_INVALID);
l = FIELD_OFFSET(TC_GEN_FLOW, TcObjects) + pGenFlow->TcObjectsLength;
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFlowStruc: Invalid pGenFlow: = 0x%X\n",
Status ));
}
return Status;
}
AllocMem(&pFlow, sizeof(FLOW_STRUC));
if (pFlow != NULL) {
RtlZeroMemory(pFlow, sizeof(FLOW_STRUC));
//
// Allocate memory and save the generic flow structure
//
AllocMem(&pFlow->pGenFlow, l);
if (pFlow->pGenFlow == NULL) {
FreeMem(pFlow);
pFlow = NULL;
Status = ERROR_NOT_ENOUGH_MEMORY;
} else {
//
// copy the generic flow into the new allocation
//
__try {
RtlCopyMemory(pFlow->pGenFlow, pGenFlow, l);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFlowStruc: Exception Error: = 0x%X\n",
Status ));
}
return Status;
}
//
// acquire a new handle for the flow
//
pFlow->ClHandle = AllocateHandle((PVOID)pFlow);
//
// set the other parameters in the flow
//
pFlow->GenFlowLen = l;
pFlow->ObjectType = ENUM_GEN_FLOW_TYPE;
pFlow->ClFlowCtx = ClFlowCtx;
pFlow->Flags = 0;
pFlow->InstanceNameLength = 0;
ReferenceInit(&pFlow->RefCount, pFlow, DereferenceFlow);
REFADD(&pFlow->RefCount, 'FLOW');
pFlow->FilterCount = 0;
InitializeListHead(&pFlow->FilterList);
__try {
InitLock(pFlow->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
FreeHandle(pFlow->ClHandle);
FreeMem(pFlow->pGenFlow);
FreeMem(pFlow);
return Status;
}
SET_STATE(pFlow->State, INSTALLING);
//
// Next create the event
//
pFlow->PendingEvent = CreateEvent(NULL, // default attr
FALSE, // auto reset
FALSE, // init = not signaled
NULL // no name
);
if (!pFlow->PendingEvent)
{
// Failed to create event, get the error and free flow
Status = GetLastError();
DeleteFlowStruc(
pFlow );
return Status;
}
}
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
*ppFlow = pFlow;
return Status;
}
DWORD
CreateClassMapFlowStruc(
IN HANDLE ClFlowCtx,
IN PTC_CLASS_MAP_FLOW pClassMapFlow,
OUT PFLOW_STRUC *ppFlow
)
{
PFLOW_STRUC pFlow;
DWORD Status = NO_ERROR;
ULONG l;
return ERROR_CALL_NOT_IMPLEMENTED;
#if NEVER
// As this is not published in MSDN and not implemented in PSCHED also
*ppFlow = NULL;
AllocMem(&pFlow, sizeof(FLOW_STRUC));
if (pFlow != NULL) {
RtlZeroMemory(pFlow, sizeof(FLOW_STRUC));
//
// Allocate memory and save the generic flow structure
//
l = sizeof(TC_CLASS_MAP_FLOW) + pClassMapFlow->ObjectsLength;
AllocMem(&pFlow->pClassMapFlow, l);
if (pFlow->pClassMapFlow == NULL) {
FreeMem(pFlow);
pFlow = NULL;
Status = ERROR_NOT_ENOUGH_MEMORY;
} else {
//
// copy the generic flow into the new allocation
//
__try {
RtlCopyMemory(pFlow->pClassMapFlow, pClassMapFlow, l);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("CreateClassMapFlowStruc: Exception Error: = 0x%X\n",
Status ));
}
return Status;
}
//
// acquire a new handle for the flow
//
pFlow->ClHandle = AllocateHandle((PVOID)pFlow);
//
// set the other parameters in the flow
//
pFlow->ObjectType = ENUM_CLASS_MAP_FLOW_TYPE;
pFlow->ClFlowCtx = ClFlowCtx;
pFlow->Flags = 0;
pFlow->InstanceNameLength = 0;
InitializeListHead(&pFlow->FilterList);
__try {
InitLock(pFlow->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
if(pFlow->pClassMapFlow)
FreeMem(pFlow->pClassMapFlow);
if(pFlow)
FreeMem(pFlow);
return Status;
}
//
//
//
pFlow->PendingEvent = CreateEvent(NULL, // default attr
FALSE, // auto reset
FALSE, // init = not signaled
NULL // no name
);
if (!pFlow->PendingEvent)
{
// Failed to create event, get the error and free flow
Status = GetLastError();
DeleteFlowStruc(
pFlow );
return Status;
}
}
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
*ppFlow = pFlow;
return Status;
#endif
}
DWORD
CreateFilterStruc(
IN PTC_GEN_FILTER pGenFilter,
IN PFLOW_STRUC pFlow,
OUT PFILTER_STRUC *ppFilter
)
{
PFILTER_STRUC pFilter;
DWORD Status = NO_ERROR;
ULONG GenFilterSize;
PTC_GEN_FILTER pGpcFilter;
PUCHAR p;
ULONG ProtocolId;
ULONG PatternSize;
PIP_PATTERN pIpPattern;
PTC_IFC pTcIfc;
int i,n;
*ppFilter = NULL;
pTcIfc = pFlow->pInterface->pTcIfc;
ASSERT(pTcIfc);
__try {
switch (pGenFilter->AddressType) {
case NDIS_PROTOCOL_ID_TCP_IP:
ProtocolId = GPC_PROTOCOL_TEMPLATE_IP;
PatternSize = sizeof(IP_PATTERN);
break;
case NDIS_PROTOCOL_ID_IPX:
ProtocolId = GPC_PROTOCOL_TEMPLATE_IPX;
PatternSize = sizeof(IPX_PATTERN);
break;
default:
return ERROR_INVALID_ADDRESS_TYPE;
}
if (PatternSize != pGenFilter->PatternSize ||
pGenFilter->Pattern == NULL ||
pGenFilter->Mask == NULL) {
return ERROR_INVALID_PARAMETER;
}
} __except(EXCEPTION_EXECUTE_HANDLER) {
Status = ERROR_INVALID_PARAMETER;
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFilterStruc: Exception Error: = 0x%X\n",
Status ));
}
return Status;
}
AllocMem(&pFilter, sizeof(FILTER_STRUC));
if (pFilter != NULL) {
RtlZeroMemory(pFilter, sizeof(FILTER_STRUC));
//
// Allocate memory and save the generic filter structure
//
GenFilterSize = sizeof(TC_GEN_FILTER) + 2*pGenFilter->PatternSize;
AllocMem(&pGpcFilter, GenFilterSize);
if (pGpcFilter == NULL) {
FreeMem(pFilter);
pFilter = NULL;
Status = ERROR_NOT_ENOUGH_MEMORY;
} else {
//
// copy the generic filter to local storage
//
pGpcFilter->AddressType = pGenFilter->AddressType;
pGpcFilter->PatternSize = PatternSize;
p = (PUCHAR)pGpcFilter + sizeof(TC_GEN_FILTER);
__try {
RtlCopyMemory(p, pGenFilter->Pattern, pGenFilter->PatternSize);
if (pGenFilter->AddressType == NDIS_PROTOCOL_ID_TCP_IP) {
if(pTcIfc->InterfaceIndex == IF_UNKNOWN) {
if (NO_ERROR != (Status = GetInterfaceIndex(pTcIfc->pAddressListDesc,
&pTcIfc->InterfaceIndex,
&pTcIfc->SpecificLinkCtx))) {
FreeMem(pFilter);
FreeMem(pGpcFilter);
return Status;
}
}
//
// IP pattern, set reserved fields
//
pIpPattern = (PIP_PATTERN)p;
pIpPattern->Reserved1 = pFlow->pInterface->pTcIfc->InterfaceIndex;
pIpPattern->Reserved2 = pFlow->pInterface->pTcIfc->SpecificLinkCtx;
pIpPattern->Reserved3[0] = pIpPattern->Reserved3[1] = pIpPattern->Reserved3[2] = 0;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = ERROR_INVALID_PARAMETER;
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFilterStruc: Exception Error: = 0x%X\n",
Status ));
}
FreeMem(pGpcFilter);
FreeMem(pFilter);
return Status;
}
pGpcFilter->Pattern = (PVOID)p;
p += pGenFilter->PatternSize;
__try {
RtlCopyMemory(p, pGenFilter->Mask, pGenFilter->PatternSize);
if (pGenFilter->AddressType == NDIS_PROTOCOL_ID_TCP_IP) {
//
// IP pattern, set reserved fields
//
pIpPattern = (PIP_PATTERN)p;
pIpPattern->Reserved1 = pIpPattern->Reserved2 = 0xffffffff;
pIpPattern->Reserved3[0] = pIpPattern->Reserved3[1] = pIpPattern->Reserved3[2] = 0xff;
}
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = ERROR_INVALID_PARAMETER;
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFilterStruc: Exception Error: = 0x%X\n",
Status ));
}
FreeMem(pGpcFilter);
FreeMem(pFilter);
return Status;
}
pGpcFilter->Mask = (PVOID)p;
pFilter->pGpcFilter = pGpcFilter;
//
// acquire a new handle for the Filter
//
pFilter->ClHandle = AllocateHandle((PVOID)pFilter);
// what if we're out of memory?
if (!pFilter->ClHandle) {
IF_DEBUG(ERRORS) {
WSPRINT(("CreateFilterStruc: Cant allocate Handle\n"));
}
FreeMem(pGpcFilter);
FreeMem(pFilter);
return ERROR_NOT_ENOUGH_MEMORY;
}
//
// set the other parameters in the Filter
//
pFilter->ObjectType = ENUM_FILTER_TYPE;
pFilter->Flags = 0;
ReferenceInit(&pFilter->RefCount, pFilter, DereferenceFilter);
REFADD(&pFilter->RefCount, 'FILT');
__try {
InitLock(pFilter->Lock);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("TcRegisterClient: Exception Error: = 0x%X\n", Status ));
}
FreeHandle(pFilter->ClHandle);
FreeMem(pFilter);
FreeMem(pGpcFilter);
return Status;
}
SET_STATE(pFilter->State, INSTALLING);
//
// set the Gpc protocol template from the address type
//
pFilter->GpcProtocolTemplate = ProtocolId;
}
} else {
Status = ERROR_NOT_ENOUGH_MEMORY;
}
*ppFilter = pFilter;
return Status;
}
DWORD
EnumAllInterfaces(VOID)
{
PCLIENT_STRUC pClient;
DWORD Status;
WMIHANDLE WmiHandle;
ULONG MyBufferSize = 2 KiloBytes; // is this enough?!?
PWNODE_ALL_DATA pWnode;
PWNODE_ALL_DATA pWnodeBuffer;
PTC_IFC pTcIfc;
if (_init)
return NO_ERROR;
//
// get a WMI block handle to the GUID_QOS_SUPPORTED
//
Status = WmiOpenBlock((GUID *)&GUID_QOS_TC_SUPPORTED, 0, &WmiHandle);
if (ERROR_FAILED(Status)) {
if (Status == ERROR_WMI_GUID_NOT_FOUND) {
//
// this means there is no TC data provider
//
Status = NO_ERROR; //ERROR_TC_NOT_SUPPORTED
}
return Status;
}
do {
//
// allocate a private buffer to retrieve all wnodes
//
AllocMem(&pWnodeBuffer, MyBufferSize);
if (pWnodeBuffer == NULL) {
WmiCloseBlock(WmiHandle);
return ERROR_NOT_ENOUGH_MEMORY;
}
__try {
Status = WmiQueryAllData(WmiHandle, &MyBufferSize, pWnodeBuffer);
} __except (EXCEPTION_EXECUTE_HANDLER) {
Status = GetExceptionCode();
IF_DEBUG(ERRORS) {
WSPRINT(("EnumAllInterfaces: Exception Error: = %X\n",
Status ));
}
}
if (Status == ERROR_INSUFFICIENT_BUFFER) {
//
// failed since the buffer was too small
// release the buffer and double the size
//
MyBufferSize *= 2;
FreeMem(pWnodeBuffer);
pWnodeBuffer = NULL;
}
} while (Status == ERROR_INSUFFICIENT_BUFFER);
if (!ERROR_FAILED(Status)) {
ULONG dwInstanceNum;
ULONG InstanceSize;
PULONG lpdwNameOffsets;
BOOL bFixedSize = FALSE;
USHORT usNameLength;
ULONG DescSize;
PTC_SUPPORTED_INFO_BUFFER pTcInfoBuffer;
pWnode = pWnodeBuffer;
ASSERT(pWnode->WnodeHeader.Flags & WNODE_FLAG_ALL_DATA);
do {
//
// Check for fixed instance size
//
if (pWnode->WnodeHeader.Flags & WNODE_FLAG_FIXED_INSTANCE_SIZE) {
InstanceSize = pWnode->FixedInstanceSize;
bFixedSize = TRUE;
pTcInfoBuffer =
(PTC_SUPPORTED_INFO_BUFFER)OffsetToPtr(pWnode,
pWnode->DataBlockOffset);
}
//
// Get a pointer to the array of offsets to the instance names
//
lpdwNameOffsets = (PULONG) OffsetToPtr(pWnode,
pWnode->OffsetInstanceNameOffsets);
for ( dwInstanceNum = 0;
dwInstanceNum < pWnode->InstanceCount;
dwInstanceNum++) {
usNameLength =
*(USHORT *)OffsetToPtr(pWnode,
lpdwNameOffsets[dwInstanceNum]);
//
// Length and offset for variable data
//
if ( !bFixedSize ) {
InstanceSize =
pWnode->OffsetInstanceDataAndLength[dwInstanceNum].LengthInstanceData;
pTcInfoBuffer =
(PTC_SUPPORTED_INFO_BUFFER)OffsetToPtr(
(PBYTE)pWnode,
pWnode->OffsetInstanceDataAndLength[dwInstanceNum].OffsetInstanceData);
}
//
// we have all that is needed. we need to figure if
// there is enough buffer space to put the data as well
//
ASSERT(usNameLength < MAX_STRING_LENGTH);
DescSize = InstanceSize - FIELD_OFFSET(TC_SUPPORTED_INFO_BUFFER, AddrListDesc);
//
// Allocate a new interface descriptor structure
//
CreateKernelInterfaceStruc(&pTcIfc, DescSize);
if (pTcIfc != NULL) {
//
// copy the instance name string data
//
RtlCopyMemory(pTcIfc->InstanceName,
OffsetToPtr(pWnode,
lpdwNameOffsets[dwInstanceNum]+2),
usNameLength );
pTcIfc->InstanceNameLength = usNameLength;
pTcIfc->InstanceName[usNameLength/sizeof(WCHAR)] =
(WCHAR)0;
//
// copy the instance ID string data
//
RtlCopyMemory(pTcIfc->InstanceID,
&pTcInfoBuffer->InstanceID[0],
pTcInfoBuffer->InstanceIDLength );
pTcIfc->InstanceIDLength = pTcInfoBuffer->InstanceIDLength;
pTcIfc->InstanceID[pTcInfoBuffer->InstanceIDLength/sizeof(WCHAR)] =
(WCHAR)0;
//
// copy the instance data
// in this case - the network address
//
pTcIfc->AddrListBytesCount = DescSize;
//
// a sizeof(ULONG) since the structure is defined as ARRAY
// and the first ULONG is the number of elements
//
RtlCopyMemory( pTcIfc->pAddressListDesc,
&pTcInfoBuffer->AddrListDesc,
DescSize );
if (NO_ERROR != GetInterfaceIndex(pTcIfc->pAddressListDesc,
&pTcIfc->InterfaceIndex,
&pTcIfc->SpecificLinkCtx)) {
pTcIfc->InterfaceIndex = IF_UNKNOWN;
pTcIfc->SpecificLinkCtx = IF_UNKNOWN;
}
// set the state to open
GetLock(pTcIfc->Lock);
SET_STATE(pTcIfc->State, OPEN);
FreeLock(pTcIfc->Lock);
//
// Add the structure to the global linked list
//
GetLock( pGlobals->Lock );
InsertTailList(&pGlobals->TcIfcList, &pTcIfc->Linkage );
FreeLock( pGlobals->Lock );
#if 0
//
// make sure we have one gpc client per address type
//
Status = OpenGpcClients(pTcIfc);
if (ERROR_FAILED(Status)) {
break;
}
#endif
} else {
//
// no more memory, quit here
//
Status = ERROR_NOT_ENOUGH_MEMORY;
break;
}
}
//
// Update Wnode to point to next node
//
if ( pWnode->WnodeHeader.Linkage != 0) {
pWnode = (PWNODE_ALL_DATA) OffsetToPtr( pWnode,
pWnode->WnodeHeader.Linkage);
} else {
pWnode = NULL;
}
} while (pWnode != NULL && !ERROR_FAILED(Status));
}
//
// release resources and close WMI handle
//
WmiCloseBlock(WmiHandle);
if (pWnodeBuffer)
FreeMem(pWnodeBuffer);
if (Status == NO_ERROR) {
_init = TRUE;
}
return Status;
}
DWORD
CloseInterface(
IN PINTERFACE_STRUC pInterface,
BOOLEAN RemoveFlows
)
{
IF_DEBUG(CALLS) {
WSPRINT(("==>CloseInterface: pInterface=%X\n",
pInterface));
}
if (RemoveFlows) {
CloseOpenFlows(pInterface);
}
REFDEL(&pInterface->RefCount, 'CIFC');
IF_DEBUG(CALLS) {
WSPRINT(("==>CloseInterface: NO_ERROR\n"));
}
return NO_ERROR;
}
DWORD
DeleteFlow(
IN PFLOW_STRUC pFlow,
IN BOOLEAN RemoveFilters
)
{
DWORD Status;
PLIST_ENTRY pEntry;
PFILTER_STRUC pFilter;
IF_DEBUG(CALLS) {
WSPRINT(("DeleteFlow: attempting to delete flow=0x%X\n",
PtrToUlong(pFlow)));
}
if (RemoveFilters) {
CloseOpenFilters(pFlow);
} else {
if (/*pFlow->FilterCount > 0*/ !IsListEmpty(&pFlow->FilterList)) {
IF_DEBUG(ERRORS) {
WSPRINT(("DeleteFlow: filter list NOT empty\n"));
}
#if DBG
pEntry = pFlow->FilterList.Flink;
while (pEntry != &pFlow->FilterList) {
pFilter = CONTAINING_RECORD(pEntry, FILTER_STRUC, Linkage);
IF_DEBUG(ERRORS) {
WSPRINT(("<==TcDeleteFlow: Filter %x (handle %x) is open with RefCount:%d\n", pFilter, pFilter->ClHandle, pFilter->RefCount));
}
pEntry = pEntry->Flink;
}
#endif
return ERROR_TC_SUPPORTED_OBJECTS_EXIST;
}
}
//
// can remove the flow now
//
Status = IoDeleteFlow( pFlow, (BOOLEAN)!RemoveFilters );
IF_DEBUG(CALLS) {
WSPRINT(("DeleteFlow: IoDeleteFlow returned=0x%X\n",
Status));
}
if (!ERROR_PENDING(Status)) {
//
// call completed, either success or failure...
//
CompleteDeleteFlow(pFlow, Status);
}
return Status;
}
DWORD
DeleteFilter(
IN PFILTER_STRUC pFilter
)
{
DWORD Status;
IF_DEBUG(CALLS) {
WSPRINT(( "DeleteFilter: attempting to delete=0x%X\n",
PtrToUlong(pFilter)));
}
//
// call to actually delete the filter
//
Status = IoDeleteFilter( pFilter );
IF_DEBUG(CALLS) {
WSPRINT(( "DeleteFilter: IoDeleteFilter returned=0x%X\n",
Status));
}
//ASSERT(Status == NO_ERROR);
REFDEL(&pFilter->RefCount, 'FILT');
return Status;
}
PGPC_CLIENT
FindGpcClient(
IN ULONG CfInfoType
)
{
PGPC_CLIENT pGpcClient = NULL;
PLIST_ENTRY pHead, pEntry;
GetLock( pGlobals->Lock );
pHead = &pGlobals->GpcClientList;
pEntry = pHead->Flink;
while (pHead != pEntry && pGpcClient == NULL) {
pGpcClient = CONTAINING_RECORD(pEntry, GPC_CLIENT, Linkage);
if (CfInfoType != pGpcClient->CfInfoType) {
//
// address type doesn't match!
//
pGpcClient = NULL;
}
pEntry = pEntry->Flink;
}
FreeLock( pGlobals->Lock );
return pGpcClient;
}
VOID
CompleteAddFlow(
IN PFLOW_STRUC pFlow,
IN DWORD Status
)
{
PINTERFACE_STRUC pInterface;
ASSERT(pFlow);
ASSERT(!ERROR_PENDING(Status));
IF_DEBUG(CALLS) {
WSPRINT(("CompleteAddFlow: pFlow=0x%X Status=0x%X\n",
PtrToUlong(pFlow), Status));
}
if(pFlow->CompletionBuffer) {
FreeMem(pFlow->CompletionBuffer);
pFlow->CompletionBuffer = NULL;
}
//
// Check if the interface is still around.
//
GetLock(pFlow->Lock);
pInterface = pFlow->pInterface;
FreeLock(pFlow->Lock);
if (ERROR_FAILED(Status)) {
//
// failed, release resources
//
CompleteDeleteFlow(pFlow, Status);
} else {
GetLock(pGlobals->Lock);
GetLock(pInterface->Lock);
if (QUERY_STATE(pInterface->State) != OPEN) {
FreeLock(pInterface->Lock);
FreeLock(pGlobals->Lock);
IF_DEBUG(ERRORS) {
WSPRINT(("CompleteAddFlow: Interface (%X) is NOT open pFlow=0x%X Status=0x%X\n", pInterface->ClHandle,
PtrToUlong(pFlow), Status));
}
//
// Delete the only ref we have on this flow and get out.
//
REFDEL(&pFlow->RefCount, 'FLOW');
} else {
FreeLock(pInterface->Lock);
//
// The flow is ready for business
//
GetLock(pFlow->Lock);
SET_STATE(pFlow->State, OPEN);
FreeLock(pFlow->Lock);
//
// Announce on the lists that we are ready for business
//
pInterface->FlowCount++;
REFADD(&pInterface->RefCount, 'FLOW');
InsertTailList(&pInterface->FlowList, &pFlow->Linkage);
FreeLock(pGlobals->Lock);
}
}
//
// This ref was taken in TcAddFlow.
//
REFDEL(&pInterface->RefCount, 'TCAF');
}
VOID
CompleteModifyFlow(
IN PFLOW_STRUC pFlow,
IN DWORD Status
)
{
ASSERT(pFlow);
ASSERT(!ERROR_PENDING(Status));
IF_DEBUG(CALLS) {
WSPRINT(("CompleteModifyFlow: pFlow=0x%X Status=0x%X\n",
PtrToUlong(pFlow), Status));
}
GetLock(pFlow->Lock);
if(pFlow->CompletionBuffer) {
FreeMem(pFlow->CompletionBuffer);
pFlow->CompletionBuffer = NULL;
}
if (ERROR_FAILED(Status)) {
//
// failed, release the newly allocated generic flow parameters
//
FreeMem(pFlow->pGenFlow1);
} else {
//
// modification accepted, update the generic flow parameters
//
FreeMem(pFlow->pGenFlow);
pFlow->pGenFlow = pFlow->pGenFlow1;
pFlow->GenFlowLen = pFlow->GenFlowLen;
}
//
// clear the installing flag
//
pFlow->Flags &= ~TC_FLAGS_MODIFYING;
pFlow->pGenFlow1 = NULL;
pFlow->GenFlowLen1 = 0;
FreeLock(pFlow->Lock);
//
// This ref was taken in TcModifyFlow
//
REFDEL(&pFlow->RefCount, 'TCMF');
IF_DEBUG(CALLS) {
WSPRINT(("CompleteModifyFlow: pFlow=0x%X Status=0x%X\n",
PtrToUlong(pFlow), Status));
}
}
VOID
CompleteDeleteFlow(
IN PFLOW_STRUC pFlow,
IN DWORD Status
)
{
ASSERT(pFlow);
//ASSERT(Status == NO_ERROR);
//ASSERT(pFlow->CompletionBuffer);
IF_DEBUG(CALLS) {
WSPRINT(("CompleteDeleteFlow: pFlow=0x%X Status=0x%X\n",
PtrToUlong(pFlow), Status));
}
//
// okay, release resources
//
GetLock(pFlow->Lock);
if (pFlow->CompletionBuffer) {
FreeMem(pFlow->CompletionBuffer);
pFlow->CompletionBuffer = NULL;
}
FreeLock(pFlow->Lock);
IF_DEBUG(REFCOUNTS) {
WSPRINT(("#21 DEREF FLOW %X (%X) ref(%d)\n", pFlow->ClHandle, pFlow, pFlow->RefCount));
}
REFDEL(&pFlow->RefCount, 'FLOW');
}
DWORD
OpenGpcClients(
IN ULONG CfInfoType
)
{
DWORD Status = NO_ERROR;
PLIST_ENTRY pHead, pEntry;
PGPC_CLIENT pGpcClient;
//int i;
if (FindGpcClient(CfInfoType) == NULL) {
//
// create an entry in the
//
AllocMem(&pGpcClient, sizeof(GPC_CLIENT) );
if (pGpcClient == NULL) {
return ERROR_NOT_ENOUGH_MEMORY;
}
pGpcClient->CfInfoType = CfInfoType;
pGpcClient->RefCount = 1;
//
// register the gpc client
//
Status = IoRegisterClient(pGpcClient);
if (ERROR_FAILED(Status)) {
FreeMem(pGpcClient);
} else {
GetLock( pGlobals->Lock);
InsertTailList(&pGlobals->GpcClientList, &pGpcClient->Linkage);
FreeLock( pGlobals->Lock);
}
}
return Status;
}
DWORD
DereferenceInterface(
IN PINTERFACE_STRUC pInterface
)
{
DWORD Status = NO_ERROR;
IF_DEBUG(CALLS) {
WSPRINT(("==>DereferenceInterface: IfcH=%X RefCount=%d\n",
pInterface->ClHandle, pInterface->RefCount));
}
FreeHandle(pInterface->ClHandle);
//GetLock(pGlobals->Lock);
IF_DEBUG(REFCOUNTS) {
WSPRINT(("==>DereferenceInterface: IfcH=%X Interface=%x\n",
pInterface->ClHandle, pInterface));
}
//
// close the interface and all flows/filters
//
RemoveEntryList(&pInterface->Linkage);
RemoveEntryList(&pInterface->NextIfc);
//
// Deregister from any guid notification requests
//
TcipDeleteInterfaceFromNotificationList(
pInterface,
0
);
//
// #295267
// Do not dereference Client OR decrement Interface Count until
// the Interface is actually going away. Otherwise, the client structures
// are cleaned out, and when the ref count finally goes down and we
// touch this code path, we hit an AV.
//
pInterface->pClient->InterfaceCount--;
IF_DEBUG(HANDLES) {
WSPRINT(("DEREF Client A : %x\n", pInterface->pClient->ClHandle));
}
REFDEL(&pInterface->pClient->RefCount, 'CIFC');
REFDEL(&pInterface->pTcIfc->RefCount, 'CIFC');
//
// This is complex, so read carefully.
// We want CloseInterface to wait until the event is set (292120).
// It is likely that in case the TcCloseInterface call didn't
// come in, we dont have to set the Event since the TC_FLAGS_WAITING
// will not be set in that case.
//
if (!IS_WAITING(pInterface->Flags)) {
CloseHandle(pInterface->IfcEvent);
} else {
SetEvent(pInterface->IfcEvent);
}
//
// free the interface resources
//
DeleteLock(pInterface->Lock);
FreeMem(pInterface);
//FreeLock(pGlobals->Lock);
IF_DEBUG(CALLS) {
WSPRINT(("<==DereferenceInterface: Status=%X\n", Status));
}
return Status;
}
DWORD
DereferenceFlow(
IN PFLOW_STRUC pFlow
)
{
DWORD Status = NO_ERROR;
IF_DEBUG(CALLS) {
WSPRINT(("==>DereferenceFlow: FlowH=%X Flow=%X\n",
pFlow->ClHandle, pFlow));
}
//GetLock(pGlobals->Lock);
IF_DEBUG(REFCOUNTS) {
WSPRINT(("==>DereferenceFlow: FlowH=%X Flow=%X\n",
pFlow->ClHandle, pFlow));
}
//
// remove the flow from the list
//
FreeHandle(pFlow->ClHandle);
GetLock(pFlow->Lock);
if (QUERY_STATE(pFlow->State) != INSTALLING) {
FreeLock(pFlow->Lock);
RemoveEntryList(&pFlow->Linkage);
pFlow->pInterface->FlowCount--;
IF_DEBUG(HANDLES) {
WSPRINT(("DEREF Interface A : %x\n", pFlow->pInterface->ClHandle));
}
REFDEL(&pFlow->pInterface->RefCount, 'FLOW');
} else {
FreeLock(pFlow->Lock);
}
//
// moved here from CompleteDeleteFlow
//
//
// free the interface resources
//
DeleteFlowStruc(pFlow);
//FreeLock(pGlobals->Lock);
IF_DEBUG(CALLS) {
WSPRINT(("<==DereferenceFlow: Status=%X\n", Status));
}
return Status;
}
DWORD
DereferenceClient(
IN PCLIENT_STRUC pClient
)
{
//GetLock( pGlobals->Lock );
IF_DEBUG(REFCOUNTS) {
WSPRINT(("==>DereferenceClient: pClient=%x, Handle=%x, RefCount=%d\n",
pClient, pClient->ClHandle, pClient->RefCount));
}
GetLock(pClient->Lock);
SET_STATE(pClient->State, REMOVED);
FreeLock(pClient->Lock);
FreeHandle( pClient->ClHandle );
RemoveEntryList( &pClient->Linkage );
DeleteLock(pClient->Lock);
FreeMem( pClient );
//FreeLock( pGlobals->Lock );
return NO_ERROR;
}
DWORD
DereferenceFilter(
IN PFILTER_STRUC pFilter
)
{
DWORD Status = NO_ERROR;
IF_DEBUG(CALLS) {
WSPRINT(("==>DereferenceFilter: FilterH=%X RefCount=%d\n",
pFilter->ClHandle, pFilter->RefCount));
}
//GetLock(pGlobals->Lock);
IF_DEBUG(REFCOUNTS) {
WSPRINT(("==>DereferenceFilter: FilterH=%X Filter=%X on FLOW=%X\n",
pFilter->ClHandle, pFilter, pFilter->pFlow));
}
FreeHandle(pFilter->ClHandle);
//
// remove the flow from the list
//
GetLock(pFilter->Lock);
if (QUERY_STATE(pFilter->State) != INSTALLING) {
FreeLock(pFilter->Lock);
RemoveEntryList(&pFilter->Linkage);
pFilter->pFlow->FilterCount--;
IF_DEBUG(REFCOUNTS) {
WSPRINT(("#22 DEREF FLOW %X (%X) ref(%d)\n", pFilter->pFlow->ClHandle, pFilter->pFlow, pFilter->pFlow->RefCount));
}
REFDEL(&pFilter->pFlow->RefCount, 'FILT');
} else {
FreeLock(pFilter->Lock);
}
DeleteFilterStruc(pFilter);
//FreeLock(pGlobals->Lock);
IF_DEBUG(CALLS) {
WSPRINT(("<==DereferenceFilter: Status=%X\n", Status));
}
return Status;
}
DWORD
GetInterfaceIndex(
IN PADDRESS_LIST_DESCRIPTOR pAddressListDesc,
OUT PULONG pInterfaceIndex,
OUT PULONG pSpecificLinkCtx)
{
PNETWORK_ADDRESS_LIST pAddrList;
NETWORK_ADDRESS UNALIGNED *pAddr;
DWORD n,k;
DWORD Status = NO_ERROR;
PMIB_IPADDRTABLE pIpAddrTbl;
DWORD dwSize = 2 KiloBytes;
NETWORK_ADDRESS_IP UNALIGNED *pIpNetAddr = 0;
DWORD cAddr;
*pInterfaceIndex = 0;
*pSpecificLinkCtx = 0;
cAddr = pAddressListDesc->AddressList.AddressCount;
if (cAddr == 0) {
//
// no address
//
return NO_ERROR;
}
#if INTERFACE_ID
AllocMem(&pIpAddrTbl, dwSize);
if (pIpAddrTbl == NULL) {
return ERROR_NOT_ENOUGH_MEMORY;
}
pAddr = (UNALIGNED NETWORK_ADDRESS *) &pAddressListDesc->AddressList.Address[0];
for (n = 0; n < cAddr; n++) {
if (pAddr->AddressType == NDIS_PROTOCOL_ID_TCP_IP) {
pIpNetAddr = (UNALIGNED NETWORK_ADDRESS_IP *)&pAddr->Address[0];
break;
}
pAddr = (UNALIGNED NETWORK_ADDRESS *)(((PUCHAR)pAddr)
+ pAddr->AddressLength
+ FIELD_OFFSET(NETWORK_ADDRESS, Address));
}
if (pIpNetAddr) {
Status = GetIpAddrTableFromStack(
pIpAddrTbl,
dwSize,
FALSE
);
if (Status == NO_ERROR) {
//
// search for the matching IP address to IpAddr
// in the table we got back from the stack
//
for (k = 0; k < pIpAddrTbl->dwNumEntries; k++) {
if (pIpAddrTbl->table[k].dwAddr == pIpNetAddr->in_addr) {
//
// found one, get the index
//
*pInterfaceIndex = pIpAddrTbl->table[k].dwIndex;
break;
}
}
if (pAddressListDesc->MediaType == NdisMediumWan) {
if (n+1 < cAddr) {
//
// there is another address that contains
// the remote client address
// this should be used as the link ID
//
pAddr = (UNALIGNED NETWORK_ADDRESS *)(((PUCHAR)pAddr)
+ pAddr->AddressLength
+ FIELD_OFFSET(NETWORK_ADDRESS, Address));
if (pAddr->AddressType == NDIS_PROTOCOL_ID_TCP_IP) {
//
// parse the second IP address,
// this would be the remote IP address for dialin WAN
//
pIpNetAddr = (UNALIGNED NETWORK_ADDRESS_IP *)&pAddr->Address[0];
*pSpecificLinkCtx = pIpNetAddr->in_addr;
}
}
}
}
}
FreeMem(pIpAddrTbl);
#endif
return Status;
}