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windows-nt/Source/XPSP1/NT/base/fs/rdr2/rdbss/smb.mrx/vcsndrcv.c

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/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
vcsndrcv.c
Abstract:
This module implements all functions related to transmitting and recieving SMB's on a
connection based transport.
Revision History:
Balan Sethu Raman [SethuR] 6-March-1995
Notes:
--*/
#include "precomp.h"
#pragma hdrstop
#include "vcsndrcv.h"
#include "nbtioctl.h"
//
// Forward declarations
//
NTSTATUS
VctTranceive(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMB_EXCHANGE pExchange,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext);
NTSTATUS
VctReceive(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMB_EXCHANGE pExchange);
NTSTATUS
VctSend(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext);
NTSTATUS
VctSendDatagram(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext);
struct _SMBCE_VC *
VctSelectVc(
struct SMBCE_SERVER_VC_TRANSPORT *pVcTransport,
BOOLEAN fMultiplexed);
NTSTATUS
VctInitializeExchange(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMB_EXCHANGE pExchange);
NTSTATUS
VctUninitializeExchange(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMB_EXCHANGE pExchange);
NTSTATUS
VctIndReceive(
IN PVOID pEventContext,
IN PRXCE_VC pVc,
IN ULONG ReceiveFlags,
IN ULONG BytesIndicated,
IN ULONG BytesAvailable,
OUT ULONG *pBytesTaken,
IN PVOID pTsdu,
OUT PMDL *pDataBufferPointer,
OUT PULONG pDataBufferSize
);
NTSTATUS
VctIndDataReady(
IN PVOID pEventContext,
IN PMDL pBuffer,
IN ULONG DataSize,
IN NTSTATUS CopyDataStatus
);
NTSTATUS
VctIndEndpointError(
IN PVOID pEventContext,
IN NTSTATUS IndicatedStatus
);
NTSTATUS
VctIndSendPossible(
IN PVOID pEventContext,
IN PRXCE_VC pRxCeVc,
IN ULONG BytesAvailable
);
NTSTATUS
VctIndReceiveDatagram(
IN PVOID pRxCeEventContext,
IN int SourceAddressLength,
IN PVOID SourceAddress,
IN int OptionsLength,
IN PVOID Options,
IN ULONG ReceiveDatagramFlags,
IN ULONG BytesIndicated,
IN ULONG BytesAvailable,
OUT ULONG *BytesTaken,
IN PVOID Tsdu,
OUT PMDL *pDataBufferPointer,
OUT PULONG pDataBufferSize
);
NTSTATUS
VctIndSendComplete(
IN PVOID pEventContext,
IN PRXCE_VC pRxCeVc,
IN PVOID pCompletionContext,
IN NTSTATUS SendCompletionStatus
);
NTSTATUS
VctCompleteInitialization(
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMBCE_TRANSPORT pTransport,
struct SMBCE_SERVER_VC_TRANSPORT *pVcTransport);
NTSTATUS
VctUninitialize(
PVOID pTransport);
NTSTATUS
VctpTranslateNetbiosNameToIpAddress(
IN OEM_STRING *pName,
OUT ULONG *pIpAddress
);
ULONG
VctComputeTransportAddressSize(
IN PUNICODE_STRING pServerName);
NTSTATUS
VctBuildTransportAddress (
IN PTRANSPORT_ADDRESS pTransportAddress,
IN ULONG TransportAddressLength,
IN PUNICODE_STRING pServerName,
OUT PULONG pServerIpAddress
);
NTSTATUS
VctpCreateConnection(
IN PSMBCEDB_SERVER_ENTRY pServerEntry,
IN PTRANSPORT_ADDRESS pTransportAddress,
IN ULONG TransportAddressLength,
IN PUNICODE_STRING pServerName,
OUT PSMBCE_TRANSPORT *pTransportPtr,
IN OUT PRXCE_CONNECTION pRxCeConnection,
IN OUT PRXCE_VC pRxCeVc);
VOID
VctpInitializeServerTransport(
struct _RXCE_VC_CONNECT_CONTEXT *pRxCeConnectContext);
NTSTATUS
VctpInvokeTransportFunction(
struct _RXCE_VC_CONNECT_CONTEXT *pRxCeConnectContext);
VOID
VctpUninitializeServerTransport(
struct _RXCE_VC_CONNECT_CONTEXT *pRxCeConnectContext);
NTSTATUS
VctTearDownServerTransport(
PSMBCE_SERVER_TRANSPORT pServerTransport);
NTSTATUS
VctInitiateDisconnect(
PSMBCE_SERVER_TRANSPORT pServerTransport);
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, VctTranceive)
#pragma alloc_text(PAGE, VctReceive)
#pragma alloc_text(PAGE, VctSend)
#pragma alloc_text(PAGE, VctSendDatagram)
#pragma alloc_text(PAGE, VctSelectVc)
#pragma alloc_text(PAGE, VctInitializeExchange)
#pragma alloc_text(PAGE, VctUninitializeExchange)
#pragma alloc_text(PAGE, VctIndEndpointError)
#pragma alloc_text(PAGE, VctIndSendPossible)
#pragma alloc_text(PAGE, VctCompleteInitialization)
#pragma alloc_text(PAGE, VctUninitialize)
#pragma alloc_text(PAGE, VctpTranslateNetbiosNameToIpAddress)
#pragma alloc_text(PAGE, VctComputeTransportAddressSize)
#pragma alloc_text(PAGE, VctBuildTransportAddress)
#pragma alloc_text(PAGE, VctpCreateConnection)
#pragma alloc_text(PAGE, VctpInitializeServerTransport)
#pragma alloc_text(PAGE, VctpUninitializeServerTransport)
#pragma alloc_text(PAGE, VctpInvokeTransportFunction)
#pragma alloc_text(PAGE, VctInstantiateServerTransport)
#pragma alloc_text(PAGE, VctTearDownServerTransport)
#pragma alloc_text(PAGE, VctInitiateDisconnect)
#endif
RXDT_DefineCategory(VCSNDRCV);
#define Dbg (DEBUG_TRACE_VCSNDRCV)
// Move this def to a common .h file.
#define MAX_SMB_PACKET_SIZE (65536)
#define MIN(a,b) ((a) < (b) ? (a) : (b))
//
// Forward references of functions ....
//
extern NTSTATUS
VctTearDownServerTransport(
PSMBCE_SERVER_TRANSPORT pTransport);
extern NTSTATUS
VctInitializeExchange(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMB_EXCHANGE pExchange);
extern PSMBCE_VC
VctSelectVc(
PSMBCE_SERVER_VC_TRANSPORT pVcTransport,
BOOLEAN fMultiplexed);
extern NTSTATUS
SmbCeReceiveIndWithSecuritySignature(
IN PSMBCEDB_SERVER_ENTRY pServerEntry,
IN ULONG BytesIndicated,
IN ULONG BytesAvailable,
OUT ULONG *pBytesTaken,
IN PVOID pTsdu,
OUT PMDL *pDataBufferPointer,
OUT PULONG pDataBufferSize,
IN ULONG ReceiveFlags
);
extern NTSTATUS
SmbCeDataReadyIndWithSecuritySignature(
IN PSMBCEDB_SERVER_ENTRY pServerEntry,
IN PMDL pBuffer,
IN ULONG DataSize,
IN NTSTATUS CopyDataStatus);
#define SmbMmInitializeVcEntry(pVcEntry) \
SmbMmInitializeHeader((pVcEntry));
#define SmbMmUninitializeVcEntry(pVcEntry) \
ASSERT(IsListEmpty(&(pVcEntry)->Requests.ListHead))
#define VctSelectMultiplexedVcEntry(pVcTransport) VctSelectVc(pVcTransport,TRUE)
#define VctSelectRawVcEntry(pVcTransport) VctSelectVc(pVcTransport,FALSE)
//
// Inline functions to update the state of a VC.
//
INLINE BOOLEAN
VctUpdateVcStateLite(
PSMBCE_VC pVc,
SMBCE_VC_STATE NewState)
{
BOOLEAN Result = TRUE;
ASSERT(SmbCeSpinLockAcquired());
if (NewState == SMBCE_VC_STATE_RAW) {
if (pVc->SwizzleCount != 0) {
Result = FALSE;
} else {
pVc->State = NewState;
}
} else {
pVc->State = NewState;
}
return Result;
}
INLINE BOOLEAN
VctUpdateVcState(
PSMBCE_VC pVc,
SMBCE_VC_STATE NewState)
{
BOOLEAN Result = TRUE;
SmbCeAcquireSpinLock();
Result = VctUpdateVcStateLite(pVc,NewState);
SmbCeReleaseSpinLock();
return Result;
}
NTSTATUS
VctTranceive(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMB_EXCHANGE pExchange,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext)
/*++
Routine Description:
This routine transmits/receives a SMB for a give exchange
Arguments:
pTransport - the transport
pServerEntry - the server entry
pExchange - the exchange instance issuing this SMB.
SendOptions - options for send
pSmbMdl - the SMB that needs to be sent.
SendLength - length of data to be transmitted
pSendCompletionContext - the send completion context
Return Value:
STATUS_SUCCESS - the server call construction has been finalized.
STATUS_PENDING - the open involves network traffic and the exchange has been
queued for notification ( pServerPointer is set to NULL)
Other Status codes correspond to error situations.
--*/
{
NTSTATUS Status = STATUS_SUCCESS;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
PSMB_HEADER pSmbHeader = MmGetSystemAddressForMdlSafe(pSmbMdl,LowPagePriority);
USHORT Mid;
BOOLEAN fInvokeSendCompleteHandler = TRUE;
PAGED_CODE();
ASSERT(pServerEntry->Header.ObjectType == SMBCEDB_OT_SERVER);
if (pSmbHeader == NULL) {
Status = STATUS_INSUFFICIENT_RESOURCES;
} else {
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
// Ensure that the connection is still active before satisfying the request.
if (SmbCeIsEntryInUse(&pServerEntry->Header)) {
pVc = pExchange->SmbCeContext.TransportContext.Vcs.pVc;
if (pVc == NULL) {
Status = STATUS_CONNECTION_DISCONNECTED;
}
if ((Status == STATUS_SUCCESS) &&
(pVc->State == SMBCE_VC_STATE_MULTIPLEXED)) {
Status = RxCeSend(
&pVc->RxCeVc,
SendOptions,
pSmbMdl,
SendLength,
pSendCompletionContext);
if ((Status == STATUS_SUCCESS) || (Status == STATUS_PENDING)) {
Status = STATUS_PENDING;
// The underlying connection engine assumes the responsibility of
// invoking the send complete handler from this point.
fInvokeSendCompleteHandler = FALSE;
}
} else {
RxDbgTrace(0, Dbg, ("VctTranceive: Disconnected connection detected\n"));
Status = STATUS_CONNECTION_DISCONNECTED;
}
} else {
// The server entry is not valid ...
Status = STATUS_CONNECTION_DISCONNECTED;
}
}
if (Status != STATUS_PENDING) {
RxDbgTrace(0, Dbg, ("VctTranceive: Return Status %lx\n",Status));
}
// There are instances in which the send was aborted even before the underlying
// transport was invoked. In such cases the appropriate send complete handler
// needs to be called so that the associated exchange can be finalized.
if (fInvokeSendCompleteHandler) {
NTSTATUS LocalStatus;
LocalStatus = SmbCeSendCompleteInd(
pServerEntry,
pSendCompletionContext,
Status);
RxDbgTrace(0, Dbg, ("VctTranceive: Send Complete Handler Return Status %lx\n",LocalStatus));
}
return Status;
}
NTSTATUS
VctReceive(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMB_EXCHANGE pExchange)
/*++
Routine Description:
This routine transmits/receives a SMB for a give exchange
Arguments:
pTransport - the server transport
pServerEntry - the server entry
pExchange - the exchange instance issuing this SMB.
Return Value:
STATUS_PENDING - the request has been queued
Other Status codes correspond to error situations.
--*/
{
NTSTATUS Status = STATUS_SUCCESS;
PSMBCEDB_NET_ROOT_ENTRY pNetRootEntry;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
PAGED_CODE();
ASSERT(pServerEntry->Header.ObjectType == SMBCEDB_OT_SERVER);
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
pVc = pExchange->SmbCeContext.TransportContext.Vcs.pVc;
// Ensure that the connection is still active before satisfying the request.
if (SmbCeIsEntryInUse(&pServerEntry->Header) &&
(pVc != NULL)) {
Status = STATUS_SUCCESS;
} else {
// The server entry is not valid ...
Status = STATUS_CONNECTION_DISCONNECTED;
}
return Status;
}
NTSTATUS
VctSend(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext)
/*++
Routine Description:
This routine opens/creates a server entry in the connection engine database
Arguments:
pTransport - the server transport
pServer - the recepient server
SendOptions - options for send
pSmbMdl - the SMB that needs to be sent.
SendLength - length of data to be sent
pSendCompletionContext - the send completion context
Return Value:
STATUS_SUCCESS - the send was successful.
STATUS_PENDING - the send has been queued
Other Status codes correspond to error situations.
--*/
{
NTSTATUS Status = STATUS_CONNECTION_DISCONNECTED;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
BOOLEAN fInvokeSendCompleteHandler = TRUE;
PAGED_CODE();
ASSERT(pServerEntry->Header.ObjectType == SMBCEDB_OT_SERVER);
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
pVc = VctSelectMultiplexedVcEntry(pVcTransport);
if (pVc != NULL) {
if (pVc->State == SMBCE_VC_STATE_MULTIPLEXED) {
Status = RxCeSend(
&pVc->RxCeVc,
SendOptions,
pSmbMdl,
SendLength,
pSendCompletionContext);
if ((Status == STATUS_SUCCESS) || (Status == STATUS_PENDING)) {
// The underlying connection engine assumes the responsibility of
// invoking the send complete handler from this point.
fInvokeSendCompleteHandler = FALSE;
}
}
}
if (!NT_SUCCESS(Status)) {
RxDbgTrace(0, Dbg, ("VctSend: RxCeSend returned %lx\n",Status));
}
// There are instances in which the send was aborted even before the underlying
// transport was invoked. In such cases the appropriate send complete handler
// needs to be called so that the associated exchange can be finalized.
if (fInvokeSendCompleteHandler) {
NTSTATUS LocalStatus;
LocalStatus = SmbCeSendCompleteInd(
pServerEntry,
pSendCompletionContext,
Status);
RxDbgTrace(0, Dbg, ("VctTranceive: Send Complete Handler Return Status %lx\n",LocalStatus));
}
return Status;
}
NTSTATUS
VctSendDatagram(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMBCEDB_SERVER_ENTRY pServerEntry,
ULONG SendOptions,
PMDL pSmbMdl,
ULONG SendLength,
PVOID pSendCompletionContext)
/*++
Routine Description:
This routine opens/creates a server entry in the connection engine database
Arguments:
pTransport - the server transport
pServer - the recepient server
SendOptions - options for send
pSmbMdl - the SMB that needs to be sent.
SendLength - length of data to be sent
pSendCompletionContext - the send completion context
Return Value:
STATUS_SUCCESS - the server call construction has been finalized.
STATUS_PENDING - the open involves network traffic and the exchange has been
queued for notification ( pServerPointer is set to NULL)
Other Status codes correspond to error situations.
--*/
{
PAGED_CODE();
return STATUS_NOT_IMPLEMENTED;
}
PSMBCE_VC
VctSelectVc(
PSMBCE_SERVER_VC_TRANSPORT pVcTransport,
BOOLEAN fMultiplexed)
/*++
Routine Description:
This routine embodies the logic for the selection of a VC on which the SMB exchange
will transpire
Arguments:
pVcTransport - the transport structure
fMultiplexed - the desired mode
Return Value:
a referenced VC entry if successful otherwise NULL
--*/
{
NTSTATUS Status;
PSMBCE_VC pVc = NULL;
ULONG VcIndex,NumberOfActiveVcs = 0;
SMBCE_VC_STATE DesiredState;
PAGED_CODE();
if (fMultiplexed) {
RxDbgTrace(0, Dbg, ("VctSelectVc: Referencing Multiplexed entry\n"));
DesiredState = SMBCE_VC_STATE_MULTIPLEXED;
} else {
RxDbgTrace(0, Dbg, ("VctSelectVc: Referencing Raw entry\n"));
DesiredState = SMBCE_VC_STATE_RAW;
}
// Acquire the resource
SmbCeAcquireResource();
// Choose the first VC that can support multiplexed requests
for (VcIndex = 0; VcIndex < pVcTransport->MaximumNumberOfVCs; VcIndex++) {
PSMBCE_VC pTempVc = &pVcTransport->Vcs[VcIndex];
NumberOfActiveVcs++;
if (pTempVc->State == SMBCE_VC_STATE_MULTIPLEXED) {
if (DesiredState == SMBCE_VC_STATE_MULTIPLEXED) {
pVc = pTempVc;
break;
} else {
// If the current number of active references to a VC is zero, it can
// be transformed into the raw mode.
if (VctUpdateVcState(pTempVc,SMBCE_VC_STATE_RAW)) {
pVc = pTempVc;
break;
} else {
NumberOfActiveVcs++;
}
}
}
}
if (pVc == NULL) {
// Check if it is O.K. to add VCs to this connection. Currently the server
// implementation supports only one VC per connection. Therefore if an
// active VC exists which has been grabbed for raw mode use an error is returned.
// Subsequently when the server is upgraded to handle multiple VCs the logic
// for adding a new VC will be implemented as part of this routine.
}
if (pVc != NULL) {
VctReferenceVc(pVc);
}
// release the resource
SmbCeReleaseResource();
return pVc;
}
NTSTATUS
VctInitializeExchange(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMB_EXCHANGE pExchange)
/*++
Routine Description:
This routine initializes the transport information pertinent to a exchange
Arguments:
pTransport - the transport structure
pExchange - the exchange instance
Return Value:
STATUS_SUCCESS -
Other Status codes correspond to error situations.
--*/
{
PSMBCEDB_SERVER_ENTRY pServerEntry;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
PAGED_CODE();
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
ASSERT(pExchange->SmbCeContext.TransportContext.Vcs.pVc == NULL);
pExchange->SmbCeContext.TransportContext.Vcs.pVc
= VctSelectMultiplexedVcEntry(pVcTransport);
if (pExchange->SmbCeContext.TransportContext.Vcs.pVc == NULL) {
RxDbgTrace(0, Dbg, ("VctInitializeExchange: Unsuccessful\n"));
return STATUS_CONNECTION_DISCONNECTED;
} else {
RxDbgTrace(0, Dbg, ("VctInitializeExchange: Successful\n"));
return STATUS_SUCCESS;
}
}
NTSTATUS
VctUninitializeExchange(
PSMBCE_SERVER_TRANSPORT pTransport,
PSMB_EXCHANGE pExchange)
/*++
Routine Description:
This routine uninitializes the transport information pertinent to a exchange
Arguments:
pExchange - the exchange instance
Return Value:
STATUS_SUCCESS -
Other Status codes correspond to error situations.
--*/
{
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
PAGED_CODE();
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
RxDbgTrace(0, Dbg, ("VctUninitializeExchange: Successful\n"));
if (pExchange->SmbCeContext.TransportContext.Vcs.pVc != NULL) {
VctDereferenceVc(pExchange->SmbCeContext.TransportContext.Vcs.pVc);
}
pExchange->SmbCeContext.TransportContext.Vcs.pVc = NULL;
return STATUS_SUCCESS;
}
NTSTATUS
VctIndReceive(
IN PVOID pEventContext,
IN PRXCE_VC pVc,
IN ULONG ReceiveFlags,
IN ULONG BytesIndicated,
IN ULONG BytesAvailable,
OUT ULONG *pBytesTaken,
IN PVOID pTsdu, // pointer describing this TSDU, typically a lump of bytes
OUT PMDL *pDataBufferPointer, // the buffer in which data is to be copied.
OUT PULONG pDataBufferSize // amount of data to copy
)
/*++
Routine Description:
This routine handles the receive indication for SMB's along all vcs in a connection to a
server.
Arguments:
pEventContext - the server entry
hVc - the Vc on which the SMB has been received
ReceiveFlags - options for receive
BytesIndicated - the bytes that are present in the indication.
BytesAvailable - the total data available
pTsdu - the data
pDataBufferPointer - the buffer for copying the data not indicated.
pDataBufferSize - the length of the buffer
Return Value:
STATUS_SUCCESS -
Other Status codes correspond to error situations.
--*/
{
NTSTATUS Status;
PSMBCEDB_SERVER_ENTRY pServerEntry = (PSMBCEDB_SERVER_ENTRY)pEventContext;
if (pServerEntry->SecuritySignaturesActive) {
Status = SmbCeReceiveIndWithSecuritySignature(
pServerEntry,
BytesIndicated,
BytesAvailable,
pBytesTaken,
pTsdu,
pDataBufferPointer,
pDataBufferSize,
ReceiveFlags);
} else {
Status = SmbCeReceiveInd(
pServerEntry,
BytesIndicated,
BytesAvailable,
pBytesTaken,
pTsdu,
pDataBufferPointer,
pDataBufferSize,
ReceiveFlags);
}
return Status;
}
NTSTATUS
VctIndDataReady(
IN PVOID pEventContext,
IN PMDL pBuffer,
IN ULONG DataSize,
IN NTSTATUS CopyDataStatus
)
/*++
Routine Description:
This routine handles the indication when the requested data has been copied
Arguments:
pEventContext - the server instance
pBuffer - the buffer being returned
DataSize - the amount of data copied in bytes
CopyDataStatus - CopyDataStatus
Return Value:
STATUS_SUCCESS - the server call construction has been finalized.
Other Status codes correspond to error situations.
--*/
{
NTSTATUS Status;
PSMBCEDB_SERVER_ENTRY pServerEntry = (PSMBCEDB_SERVER_ENTRY)pEventContext;
if (pServerEntry->SecuritySignaturesActive) {
Status = SmbCeDataReadyIndWithSecuritySignature(
pServerEntry,
pBuffer,
DataSize,
CopyDataStatus);
} else {
Status = SmbCeDataReadyInd(
pServerEntry,
pBuffer,
DataSize,
CopyDataStatus);
}
return STATUS_SUCCESS;
}
NTSTATUS
VctIndDisconnect(
IN PVOID pEventContext,
IN PRXCE_VC pRxCeVc,
IN int DisconnectDataLength,
IN PVOID DisconnectData,
IN int DisconnectInformationLength,
IN PVOID DisconnectInformation,
IN ULONG DisconnectFlags
)
/*++
Routine Description:
This routine handles the disconnect indication for a VC.
Arguments:
pEventContext - the server instance
hVc - the virtual circuit
DisconnectDataLength -
DisconnectData -
DisconnectInformationLength -
DisconnectInformation -
DisconnectFlags -
Return Value:
STATUS_SUCCESS - the disconnect indication has been handled
--*/
{
PSMBCEDB_SERVER_ENTRY pServerEntry = (PSMBCEDB_SERVER_ENTRY)pEventContext;
PSMBCEDB_SERVER_ENTRY pListEntry;
PSMBCE_VC pVc;
PSMBCEDB_REQUEST_ENTRY pRequestEntry;
PSMB_EXCHANGE pExchange;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport;
BOOLEAN fValidServerEntry = FALSE;
BOOLEAN OutstandingWorkItem;
// Traverse the list of server entries to ensure that the disconnect was on a
// valid server entry. If it is not on a valid server entry ignore it.
SmbCeAcquireSpinLock();
pListEntry = SmbCeGetFirstServerEntry();
while (pListEntry != NULL) {
if (pListEntry == pServerEntry) {
// The invalidation needs to hold onto an extra reference to avoid
// race conditions which could lead to premature destruction of
// this server entry.
SmbCeReferenceServerEntry(pServerEntry);
fValidServerEntry = TRUE;
break;
}
pListEntry = SmbCeGetNextServerEntry(pListEntry);
}
if (fValidServerEntry) {
pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pServerEntry->pTransport;
if (pVcTransport != NULL) {
ULONG VcIndex;
for (VcIndex = 0; VcIndex < pVcTransport->MaximumNumberOfVCs; VcIndex++) {
pVc = &pVcTransport->Vcs[VcIndex];
if (&pVc->RxCeVc == pRxCeVc) {
VctUpdateVcStateLite(pVc,SMBCE_VC_STATE_DISCONNECTED);
pVc->Status = STATUS_CONNECTION_DISCONNECTED;
break;
}
}
}
OutstandingWorkItem = pServerEntry->DisconnectWorkItemOutstanding;
// OK to unconditionally set to TRUE
pServerEntry->DisconnectWorkItemOutstanding = TRUE;
}
// Release the resource
SmbCeReleaseSpinLock();
if (fValidServerEntry) {
RxDbgTrace(0,Dbg,("@@@@@@ Disconnect Indication for %lx @@@@@\n",pServerEntry));
InterlockedIncrement(&MRxSmbStatistics.ServerDisconnects);
// Update the Server entry if this is the only VC associated with the transport.
SmbCeTransportDisconnectIndicated(pServerEntry);
// only dereference if necessary (we might already have an outstanding request)
if(OutstandingWorkItem == FALSE ) {
InitializeListHead(&pServerEntry->WorkQueueItemForDisconnect.List);
RxPostToWorkerThread(
MRxSmbDeviceObject,
CriticalWorkQueue,
&pServerEntry->WorkQueueItemForDisconnect,
SmbCepDereferenceServerEntry,
pServerEntry);
}
RxDbgTrace(0, Dbg, ("VctIndDisconnect: Processing Disconnect indication on VC entry %lx\n",pVc));
}
return STATUS_SUCCESS;
}
NTSTATUS
VctIndError(
IN PVOID pEventContext,
IN PRXCE_VC pRxCeVc,
IN NTSTATUS IndicatedStatus
)
/*++
Routine Description:
This routine handles the error indication
Arguments:
pEventContext - the server instance
pRxCeVc - the RxCe virtual circuit
Status - the error
Return Value:
STATUS_SUCCESS
--*/
{
NTSTATUS Status;
ULONG VcIndex;
PSMBCEDB_SERVER_ENTRY pServerEntry = (PSMBCEDB_SERVER_ENTRY)pEventContext;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pServerEntry->pTransport;
// Acquire the resource
SmbCeAcquireSpinLock();
// Map the RXCE vc handle to the appropriate SMBCE entry and get the request
// list associated with it.
for (VcIndex = 0; VcIndex < pVcTransport->MaximumNumberOfVCs; VcIndex++) {
pVc = &pVcTransport->Vcs[VcIndex];
if (&pVc->RxCeVc == pRxCeVc) {
VctUpdateVcStateLite(pVc,SMBCE_VC_STATE_DISCONNECTED);
pVc->Status = IndicatedStatus;
break;
}
}
// Release the resource
SmbCeReleaseSpinLock();
RxDbgTrace(0, Dbg, ("VctIndError: Processing Error indication on VC entry %lx\n",pVc));
Status = SmbCeErrorInd(
pServerEntry,
IndicatedStatus);
return Status;
}
NTSTATUS
VctIndEndpointError(
IN PVOID pEventContext,
IN NTSTATUS IndicatedStatus
)
/*++
Routine Description:
This routine handles the error indication
Arguments:
pEventContext - the server instance
Status - the error
Return Value:
STATUS_SUCCESS
--*/
{
PAGED_CODE();
return STATUS_SUCCESS;
}
NTSTATUS
VctIndSendPossible(
IN PVOID pEventContext, // the event context.
IN PRXCE_VC pRxCeVc,
IN ULONG BytesAvailable
)
/*++
Routine Description:
This routine handles the error indication
Arguments:
pEventContext - the server instance
hVc - the VC instance
BytesAvailable - the number of bytes that can be sent
Return Value:
STATUS_SUCCESS
--*/
{
PAGED_CODE();
return STATUS_SUCCESS;
}
NTSTATUS
VctIndReceiveDatagram(
IN PVOID pRxCeEventContext, // the event context
IN int SourceAddressLength, // length of the originator of the datagram
IN PVOID SourceAddress, // string describing the originator of the datagram
IN int OptionsLength, // options for the receive
IN PVOID Options, //
IN ULONG ReceiveDatagramFlags, //
IN ULONG BytesIndicated, // number of bytes this indication
IN ULONG BytesAvailable, // number of bytes in complete Tsdu
OUT ULONG *BytesTaken, // number of bytes used
IN PVOID Tsdu, // pointer describing this TSDU, typically a lump of bytes
OUT PMDL *pDataBufferPointer, // the buffer in which data is to be copied.
OUT PULONG pDataBufferSize // amount of data to copy
)
{
return STATUS_SUCCESS;
}
NTSTATUS
VctIndSendComplete(
IN PVOID pEventContext,
IN PRXCE_VC pRxCeVc,
IN PVOID pCompletionContext,
IN NTSTATUS SendCompletionStatus
)
/*++
Routine Description:
This routine handles the send complete indication for asynchronous sends
Arguments:
pEventContext - the server instance
pRxCeVc - the RxCe VC instance
pCompletionContext - the context for identifying the send request
SendCompletionStatus - the send completion status
Return Value:
STATUS_SUCCESS always ..
--*/
{
NTSTATUS Status;
PSMBCEDB_SERVER_ENTRY pServerEntry = (PSMBCEDB_SERVER_ENTRY)pEventContext;
Status = SmbCeSendCompleteInd(
pServerEntry,
pCompletionContext,
SendCompletionStatus);
return Status;
}
//
// Static dispatch vectors for Virtual Circuit based transports
//
RXCE_ADDRESS_EVENT_HANDLER
MRxSmbVctAddressEventHandler = {
VctIndEndpointError,
VctIndReceiveDatagram,
VctIndDataReady,
VctIndSendPossible,
NULL
};
RXCE_CONNECTION_EVENT_HANDLER
MRxSmbVctConnectionEventHandler = {
VctIndDisconnect,
VctIndError,
VctIndReceive,
VctIndReceiveDatagram,
VctIndReceive,
VctIndSendPossible,
VctIndDataReady,
VctIndSendComplete
};
TRANSPORT_DISPATCH_VECTOR
MRxSmbVctTransportDispatch = {
VctSend,
VctSendDatagram,
VctTranceive,
VctReceive,
NULL,
VctInitializeExchange,
VctUninitializeExchange,
VctTearDownServerTransport,
VctInitiateDisconnect
};
typedef enum _RXCE_VC_FUNCTION_CODE {
VcConnect,
VcDisconnect
} RXCE_VC_FUNCTION_CODE, *PRXCE_VC_FUNCTION_CODE;
typedef struct _RXCE_VC_CONNECT_CONTEXT {
RXCE_VC_FUNCTION_CODE FunctionCode;
PRX_WORKERTHREAD_ROUTINE pRoutine;
PSMBCEDB_SERVER_ENTRY pServerEntry;
PMRX_SRVCALL_CALLBACK_CONTEXT pCallbackContext;
PSMBCE_SERVER_TRANSPORT pServerTransport;
NTSTATUS Status;
KEVENT SyncEvent;
} RXCE_VC_CONNECT_CONTEXT, *PRXCE_VC_CONNECT_CONTEXT;
NTSTATUS
VctCompleteInitialization(
PSMBCEDB_SERVER_ENTRY pServerEntry,
PSMBCE_TRANSPORT pTransport,
PSMBCE_SERVER_VC_TRANSPORT pVcTransport)
/*++
Routine Description:
This routine initializes the transport information corresponding to a server
Arguments:
pServerEntry - the server entry instance in the database
Return Value:
STATUS_SUCCESS - the server transport construction has been finalized.
Other Status codes correspond to error situations.
Notes:
The remote address can be either deduced from the information in the Rx Context
or a NETBIOS address needs to be built from the server name.
This transport address is used subsequently to establish the connection.
--*/
{
NTSTATUS Status;
PSMBCE_VC pVc;
RXCE_CONNECTION_INFO ConnectionInfo;
RXCE_TRANSPORT_PROVIDER_INFO ProviderInfo;
PAGED_CODE();
pVc = &pVcTransport->Vcs[0];
// Query the transport information ...
Status = RxCeQueryInformation(
&pVc->RxCeVc,
RxCeTransportProviderInformation,
&ProviderInfo,
sizeof(ProviderInfo));
if (NT_SUCCESS(Status)) {
pVcTransport->MaximumSendSize = MIN( ProviderInfo.MaxSendSize,
MAXIMUM_PARTIAL_BUFFER_SIZE );
} else {
// CODE.IMPROVMENT - fix constant below to a #define, also is the
// value correct?
ASSERT( 1024 <= MAXIMUM_PARTIAL_BUFFER_SIZE );
pVcTransport->MaximumSendSize = 1024;
}
// Query the connection information ....
Status = RxCeQueryInformation(
&pVc->RxCeVc,
RxCeConnectionEndpointInformation,
&ConnectionInfo,
sizeof(ConnectionInfo));
if (NT_SUCCESS(Status)) {
// The setting of the delay parameter is an important heuristic
// that determines how quickly and how often timeouts occur. As
// a first cut a very conservative estimate for the time has been
// choosen, i.e., double the time required to transmit a 64 k packet.
// This parameter should be fine tuned.
pVcTransport->Delay.QuadPart = (-ConnectionInfo.Delay.QuadPart) +
(-ConnectionInfo.Delay.QuadPart);
if (ConnectionInfo.Throughput.LowPart != 0) {
pVcTransport->Delay.QuadPart +=
(MAX_SMB_PACKET_SIZE/ConnectionInfo.Throughput.LowPart) * 1000 * 10000;
}
RxDbgTrace( 0, Dbg, ("Connection delay set to %ld 100ns ticks\n",pVcTransport->Delay.LowPart));
pVcTransport->pDispatchVector = &MRxSmbVctTransportDispatch;
pVcTransport->MaximumNumberOfVCs = 1;
pVc->State = SMBCE_VC_STATE_MULTIPLEXED;
pVcTransport->State = SMBCEDB_ACTIVE;
} else {
RxDbgTrace(0, Dbg, ("VctInitialize : RxCeQueryInformation returned %lx\n",Status));
}
if (NT_SUCCESS(Status)) {
pVcTransport->pTransport = pTransport;
} else {
RxDbgTrace(0, Dbg, ("VctInitialize : Connection Initialization Failed %lx\n",Status));
}
return Status;
}
NTSTATUS
VctUninitialize(
PVOID pTransport)
/*++
Routine Description:
This routine uninitializes the transport instance
Arguments:
pVcTransport - the VC transport instance
Return Value:
STATUS_SUCCESS - the server transport construction has been uninitialzied.
Other Status codes correspond to error situations.
Notes:
--*/
{
NTSTATUS Status = STATUS_SUCCESS;
ULONG VcIndex;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
ULONG TransportFlags;
PAGED_CODE();
// The spinlock needs to be acquired for manipulating the list of Vcs because of
// indications that will be processed till the appropriate RXCE data structures are
// dismantled
for (VcIndex = 0; VcIndex < pVcTransport->MaximumNumberOfVCs; VcIndex++) {
pVc = &pVcTransport->Vcs[VcIndex];
// Assert the fact that the request list associated with the VC is empty.
// Tear down the VC entry
Status = RxCeTearDownVC(&pVc->RxCeVc);
ASSERT(Status == STATUS_SUCCESS);
}
// Tear down the connection endpoint ..
Status = RxCeTearDownConnection(&pVcTransport->RxCeConnection);
ASSERT(Status == STATUS_SUCCESS);
RxDbgTrace(0, Dbg, ("VctUninitialize : RxCeDisconnect returned %lx\n",Status));
// Dereference the underlying transport
if (pVcTransport->pTransport != NULL) {
SmbCeDereferenceTransport(pVcTransport->pTransport);
}
ASSERT((pVcTransport->Vcs[0].RxCeVc.hEndpoint == INVALID_HANDLE_VALUE) ||
(pVcTransport->Vcs[0].RxCeVc.hEndpoint == NULL));
ASSERT(pVcTransport->Vcs[0].RxCeVc.pEndpointFileObject == NULL);
// Free up the transport entry
RxFreePool(pVcTransport);
return Status;
}
NTSTATUS
VctpTranslateNetbiosNameToIpAddress(
IN OEM_STRING *pName,
OUT ULONG *pIpAddress
)
/*++
Routine Description:
This routine converts ascii ipaddr (11.101.4.25) into a ULONG. This is
based on the inet_addr code in winsock
Arguments:
pName - the string containing the ipaddress
Return Value:
the ipaddress as a ULONG if it's a valid ipaddress. Otherwise, 0.
Notes:
The body of this routine has been borrowed fron NetBt.
--*/
{
NTSTATUS Status;
PCHAR pStr;
int i;
int len, fieldLen;
int fieldsDone;
ULONG IpAddress;
BYTE ByteVal;
PCHAR pIpPtr;
BOOLEAN fDotFound;
BOOLEAN fieldOk;
PAGED_CODE();
Status = STATUS_INVALID_ADDRESS_COMPONENT;
if (pName->Length > NETBIOS_NAME_LEN) {
return Status;
}
pStr = pName->Buffer;
len = 0;
pIpPtr = (PCHAR)&IpAddress;
pIpPtr += 3; // so that we store in network order
fieldsDone=0;
//
// the 11.101.4.25 format can be atmost 15 chars, and pName is guaranteed
// to be at least 16 chars long (how convenient!!). Convert the string to
// a ULONG.
//
while(len < NETBIOS_NAME_LEN)
{
fieldLen=0;
fieldOk = FALSE;
ByteVal = 0;
fDotFound = FALSE;
//
// This loop traverses each of the four fields (max len of each
// field is 3, plus 1 for the '.'
//
while (fieldLen < 4)
{
if (*pStr >='0' && *pStr <='9')
{
ByteVal = (ByteVal*10) + (*pStr - '0');
fieldOk = TRUE;
}
else if (*pStr == '.' || *pStr == ' ' || *pStr == '\0')
{
*pIpPtr = ByteVal;
pIpPtr--;
fieldsDone++;
if (*pStr == '.')
fDotFound = TRUE;
// if we got a space or 0, assume it's the 4th field
if (*pStr == ' ' || *pStr == '\0')
{
break;
}
}
// unacceptable char: can't be ipaddr
else
{
return(Status);
}
pStr++;
len++;
fieldLen++;
// if we found the dot, we are done with this field: go to the next one
if (fDotFound)
break;
}
// this field wasn't ok (e.g. "11.101..4" or "11.101.4." etc.)
if (!fieldOk)
{
return(Status);
}
// if we are done with all 4 fields, we are done with the outer loop too
if ( fieldsDone == 4)
break;
if (!fDotFound)
{
return(Status);
}
}
//
// make sure the remaining chars are spaces or 0's (i.e. don't allow
// 11.101.4.25xyz to succeed)
//
for (i=len; i<NETBIOS_NAME_LEN; i++, pStr++)
{
if (*pStr != ' ' && *pStr != '\0')
{
return(Status);
}
}
*pIpAddress = IpAddress;
return( STATUS_SUCCESS );
}
ULONG
VctComputeTransportAddressSize(
IN PUNICODE_STRING pServerName)
/*++
Routine Description:
This routine takes a computer name (PUNICODE_STRING) and computes the size of the
TRANSPORT_ADDRESSS buffer required to connect to it.
Arguments:
IN PUNICODE_STRING Name - Supplies the name to put into the transport
Return Value:
size of the buffer.
Notes:
The compound transport address passed to the transports consists of two
TDI_NETBIOS_EX_ADDRESSes and a TDI_NETBIOS_ADDRESS. The two NETBIOS_EX addresses refer
to the two different endpoints registered by the server, i.e., *SMBSERVER and
the Server name padded upto NETBIOS_NAME_LEN with blanks. The order in which
the two NETBIOS_EX addresses are constructed depend upon the length of the server
name. If it is greater than NETBIOS_NAME_LEN *SMBSERVER is the first enpoint
and vice versa
--*/
{
ULONG NetbiosAddressLength,NetbiosExAddressLength,NetbiosUnicodeExAddressLength,TransportAddressSize;
ULONG OemServerNameLength;
PAGED_CODE();
OemServerNameLength = RtlUnicodeStringToOemSize(pServerName);
NetbiosAddressLength = sizeof(TDI_ADDRESS_NETBIOS);
if( OemServerNameLength > NETBIOS_NAME_LEN ) {
NetbiosAddressLength += OemServerNameLength - NETBIOS_NAME_LEN;
}
NetbiosExAddressLength = FIELD_OFFSET(TDI_ADDRESS_NETBIOS_EX,NetbiosAddress) +
NetbiosAddressLength;
NetbiosUnicodeExAddressLength = FIELD_OFFSET(TDI_ADDRESS_NETBIOS_UNICODE_EX,RemoteNameBuffer) +
pServerName->Length +
DNS_NAME_BUFFER_LENGTH * sizeof(WCHAR);
TransportAddressSize = FIELD_OFFSET(TRANSPORT_ADDRESS,Address) +
3 * FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosAddressLength +
2 * NetbiosExAddressLength +
NetbiosUnicodeExAddressLength;
return TransportAddressSize;
}
NTSTATUS
VctBuildTransportAddress (
IN PTRANSPORT_ADDRESS pTransportAddress,
IN ULONG TransportAddressLength,
IN PUNICODE_STRING pServerName,
OUT PULONG pServerIpAddress
)
/*++
Routine Description:
This routine takes a computer name (PUNICODE_STRING) and converts it into an
acceptable form for passing in as transport address.
Arguments:
pTransportAddress - Supplies the structure to fill in
TransportAddressLength - Supplies the length of the buffer at TransportAddress
pServerName - Supplies the name to put into the transport
pServerNameIsInIpAddressFormat = Server Name is of the dotted IP address kind
Return Value:
None.
Notes:
The compound transport address passed to the transports consists of two
TDI_NETBIOS_EX_ADDRESSes and a TDI_NETBIOS_ADDRESS. The two NETBIOS_EX addresses refer
to the two different endpoints registered by the server, i.e., *SMBSERVER and
the Server name padded upto NETBIOS_NAME_LEN with blanks. The order in which
the two NETBIOS_EX addresses are constructed depend upon the length of the server
name. If it is greater than NETBIOS_NAME_LEN *SMBSERVER is the first enpoint
and vice versa
The WINS database can be inconsistent for extended periods of time. In order to
account for this inconsistency on NETBIOS names and DNS names we will not
issue the address for *SMBSERVER. This will be revisited when we have a better
mechanism for identifying/authenticating the server and the client machine to each other.
--*/
{
OEM_STRING OemServerName;
NTSTATUS Status;
PTDI_ADDRESS_NETBIOS_EX pTdiNetbiosExAddress;
PTDI_ADDRESS_NETBIOS pTdiNetbiosAddress;
PTA_ADDRESS pFirstNetbiosExAddress,pSecondNetbiosExAddress,pNetbiosAddress,pNetbiosUnicodeExAddress;
PTDI_ADDRESS_NETBIOS_UNICODE_EX pTdiNetbiosUnicodeExAddress;
PCHAR FirstEndpointName,SecondEndpointName;
CHAR EndpointNameBuffer[NETBIOS_NAME_LEN];
WCHAR UnicodeEndpointNameBuffer[NETBIOS_NAME_LEN];
USHORT NetbiosAddressLength,NetbiosExAddressLength;
USHORT NetbiosAddressType = TDI_ADDRESS_TYPE_NETBIOS;
ULONG ComponentLength;
ULONG RemoteIpAddress;
BOOLEAN ServerNameIsInIpAddressForm;
PAGED_CODE();
if (TransportAddressLength < VctComputeTransportAddressSize(pServerName)) {
return STATUS_BUFFER_OVERFLOW;
}
pFirstNetbiosExAddress = &pTransportAddress->Address[0];
pTdiNetbiosExAddress = (PTDI_ADDRESS_NETBIOS_EX)pFirstNetbiosExAddress->Address;
pTdiNetbiosExAddress->NetbiosAddress.NetbiosNameType = TDI_ADDRESS_NETBIOS_TYPE_QUICK_UNIQUE;
OemServerName.Length = pServerName->Length;
OemServerName.MaximumLength = OemServerName.Length + 1;
OemServerName.Buffer = pTdiNetbiosExAddress->NetbiosAddress.NetbiosName;
Status = RtlUpcaseUnicodeStringToOemString(&OemServerName, pServerName, FALSE);
if( !NT_SUCCESS( Status ) ) {
//return STATUS_BAD_NETWORK_PATH;
OemServerName.Length = 0;
}
if (OemServerName.Length < NETBIOS_NAME_LEN) {
RtlCopyMemory( &OemServerName.Buffer[ OemServerName.Length ],
" ",
NETBIOS_NAME_LEN - OemServerName.Length
);
OemServerName.Length = NETBIOS_NAME_LEN;
}
Status = VctpTranslateNetbiosNameToIpAddress(&OemServerName,&RemoteIpAddress);
if (Status == STATUS_SUCCESS) {
if ((RemoteIpAddress == 0) || (RemoteIpAddress == 0xffffffff)) {
// If the server name is a valid IP address and matches with one of the two
// broadcast addresses used by IP turn back the request.
return STATUS_INVALID_ADDRESS_COMPONENT;
}
*pServerIpAddress = RemoteIpAddress;
ServerNameIsInIpAddressForm = TRUE;
} else {
*pServerIpAddress = 0;
ServerNameIsInIpAddressForm = FALSE;
}
NetbiosAddressLength = sizeof(TDI_ADDRESS_NETBIOS);
if( OemServerName.Length > NETBIOS_NAME_LEN ) {
NetbiosAddressLength += OemServerName.Length - NETBIOS_NAME_LEN;
}
NetbiosExAddressLength = (USHORT)(FIELD_OFFSET(TDI_ADDRESS_NETBIOS_EX,NetbiosAddress) +
NetbiosAddressLength);
pFirstNetbiosExAddress->AddressLength = NetbiosExAddressLength;
pFirstNetbiosExAddress->AddressType = TDI_ADDRESS_TYPE_NETBIOS_EX;
#if 0
// This arm of the code will be activated and the other arm deactivated when we have
// mutual authenitication between server and client machines in NT5.0
if (ServerNameIsInIpAddressForm) {
pTransportAddress->TAAddressCount = 2;
pNetbiosAddress = (PTA_ADDRESS)((PCHAR)pFirstNetbiosExAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosExAddressLength);
FirstEndpointName = SMBSERVER_LOCAL_ENDPOINT_NAME;
} else {
pTransportAddress->TAAddressCount = 3;
pSecondNetbiosExAddress = (PTA_ADDRESS)((PCHAR)pFirstNetbiosExAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosExAddressLength);
pNetbiosAddress = (PTA_ADDRESS)((PCHAR)pSecondNetbiosExAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosExAddressLength);
// Scan the server name till the first delimiter (DNS delimiter .) and form
// the endpoint name by padding the remaining name with blanks.
RtlCopyMemory(
EndpointNameBuffer,
OemServerName.Buffer,
NETBIOS_NAME_LEN);
ComponentLength = 0;
while (ComponentLength < NETBIOS_NAME_LEN) {
if (EndpointNameBuffer[ComponentLength] == '.') {
break;
}
ComponentLength++;
}
if (ComponentLength == NETBIOS_NAME_LEN) {
EndpointNameBuffer[NETBIOS_NAME_LEN - 1] = ' ';
} else {
RtlCopyMemory(&EndpointNameBuffer[ComponentLength],
" ",
NETBIOS_NAME_LEN - ComponentLength);
}
FirstEndpointName = EndpointNameBuffer;
SecondEndpointName = SMBSERVER_LOCAL_ENDPOINT_NAME;
}
#else
pTransportAddress->TAAddressCount = 3;
pNetbiosAddress = (PTA_ADDRESS)((PCHAR)pFirstNetbiosExAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosExAddressLength);
if (ServerNameIsInIpAddressForm) {
FirstEndpointName = SMBSERVER_LOCAL_ENDPOINT_NAME;
} else {
// Scan the server name till the first delimiter (DNS delimiter .) and form
// the endpoint name by padding the remaining name with blanks.
RtlCopyMemory(
EndpointNameBuffer,
OemServerName.Buffer,
NETBIOS_NAME_LEN);
ComponentLength = 0;
while (ComponentLength < NETBIOS_NAME_LEN) {
if (EndpointNameBuffer[ComponentLength] == '.') {
break;
}
ComponentLength++;
}
if (ComponentLength == NETBIOS_NAME_LEN) {
EndpointNameBuffer[NETBIOS_NAME_LEN - 1] = ' ';
} else {
RtlCopyMemory(&EndpointNameBuffer[ComponentLength],
" ",
NETBIOS_NAME_LEN - ComponentLength);
}
FirstEndpointName = EndpointNameBuffer;
}
#endif
// Copy the first endpoint name
RtlCopyMemory(
pTdiNetbiosExAddress->EndpointName,
FirstEndpointName,
NETBIOS_NAME_LEN);
#if 0
// This will be activated alongwith the other code when mutual authentication is
// in place
if (!ServerNameIsInIpAddressForm) {
// The same NETBIOS_EX address needs to be duplicated with a different endpoint name
// for the second TA_ADDRESS.
RtlCopyMemory(
pSecondNetbiosExAddress,
pFirstNetbiosExAddress,
(FIELD_OFFSET(TA_ADDRESS,Address) + NetbiosExAddressLength));
RtlCopyMemory(
((PCHAR)pSecondNetbiosExAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
FIELD_OFFSET(TDI_ADDRESS_NETBIOS_EX,EndpointName)),
SecondEndpointName,
NETBIOS_NAME_LEN);
}
#else
//ASSERT(pTransportAddress->TAAddressCount == 2);
#endif
// The Netbios address associated with the first NETBIOS_EX address is the last netbios
// address that is passed in.
RtlCopyMemory(
((PCHAR)pNetbiosAddress),
&NetbiosAddressLength,
sizeof(USHORT));
RtlCopyMemory(
((PCHAR)pNetbiosAddress + FIELD_OFFSET(TA_ADDRESS,AddressType)),
&NetbiosAddressType,
sizeof(USHORT));
RtlCopyMemory(
((PCHAR)pNetbiosAddress + FIELD_OFFSET(TA_ADDRESS,Address)),
&pTdiNetbiosExAddress->NetbiosAddress,
NetbiosAddressLength);
// Unicode Netbios name
pNetbiosUnicodeExAddress = (PTA_ADDRESS)((PCHAR)pNetbiosAddress +
FIELD_OFFSET(TA_ADDRESS,Address) +
NetbiosAddressLength);
pNetbiosUnicodeExAddress->AddressLength = (USHORT)(FIELD_OFFSET(TDI_ADDRESS_NETBIOS_UNICODE_EX,RemoteNameBuffer) +
DNS_NAME_BUFFER_LENGTH * sizeof(WCHAR));
pNetbiosUnicodeExAddress->AddressType = TDI_ADDRESS_TYPE_NETBIOS_UNICODE_EX;
pTdiNetbiosUnicodeExAddress = (PTDI_ADDRESS_NETBIOS_UNICODE_EX)pNetbiosUnicodeExAddress->Address;
pTdiNetbiosUnicodeExAddress->NetbiosNameType = TDI_ADDRESS_NETBIOS_TYPE_QUICK_UNIQUE;
pTdiNetbiosUnicodeExAddress->NameBufferType = NBT_READWRITE;
pTdiNetbiosUnicodeExAddress->EndpointName.Length = (NETBIOS_NAME_LEN)*sizeof(WCHAR);
pTdiNetbiosUnicodeExAddress->EndpointName.MaximumLength = (NETBIOS_NAME_LEN+1)*sizeof(WCHAR);
pTdiNetbiosUnicodeExAddress->EndpointName.Buffer = (PWSTR)pTdiNetbiosUnicodeExAddress->EndpointBuffer;
pTdiNetbiosUnicodeExAddress->RemoteName.Length = pServerName->Length;
pTdiNetbiosUnicodeExAddress->RemoteName.MaximumLength = DNS_NAME_BUFFER_LENGTH*sizeof(WCHAR);
pTdiNetbiosUnicodeExAddress->RemoteName.Buffer = (PWSTR)pTdiNetbiosUnicodeExAddress->RemoteNameBuffer;
if (pTdiNetbiosUnicodeExAddress->RemoteName.MaximumLength > pServerName->Length) {
ComponentLength = pServerName->Length;
} else {
ComponentLength = pTdiNetbiosUnicodeExAddress->RemoteName.MaximumLength;
}
RtlCopyMemory(
pTdiNetbiosUnicodeExAddress->RemoteNameBuffer,
pServerName->Buffer,
ComponentLength);
if (ServerNameIsInIpAddressForm) {
RtlCopyMemory(
pTdiNetbiosUnicodeExAddress->EndpointBuffer,
SMBSERVER_LOCAL_ENDPOINT_NAME_UNICODE,
NETBIOS_NAME_LEN);
} else {
// Scan the server name till the first delimiter (DNS delimiter .) and form
// the endpoint name by padding the remaining name with blanks.
RtlCopyMemory(
pTdiNetbiosUnicodeExAddress->EndpointBuffer,
L" ",
NETBIOS_NAME_LEN*sizeof(WCHAR));
if (pTdiNetbiosUnicodeExAddress->EndpointName.Length > pServerName->Length) {
ComponentLength = pServerName->Length;
} else {
ComponentLength = pTdiNetbiosUnicodeExAddress->EndpointName.Length;
}
RtlCopyMemory(
pTdiNetbiosUnicodeExAddress->EndpointBuffer,
pServerName->Buffer,
ComponentLength);
ComponentLength = 0;
while (ComponentLength < NETBIOS_NAME_LEN) {
if (pTdiNetbiosUnicodeExAddress->EndpointBuffer[ComponentLength] == L'.') {
break;
}
ComponentLength++;
}
if (ComponentLength == NETBIOS_NAME_LEN) {
pTdiNetbiosUnicodeExAddress->EndpointBuffer[NETBIOS_NAME_LEN - 1] = ' ';
} else {
RtlCopyMemory(&pTdiNetbiosUnicodeExAddress->EndpointBuffer[ComponentLength],
L" ",
(NETBIOS_NAME_LEN-ComponentLength)*sizeof(WCHAR));
}
}
//DbgPrint("Build TA %lx %lx %lx\n",pFirstNetbiosExAddress,pNetbiosAddress,pNetbiosUnicodeExAddress);
return STATUS_SUCCESS;
}
typedef struct _SMBCE_VC_CONNECTION_COMPLETION_CONTEXT {
RXCE_CONNECTION_COMPLETION_CONTEXT;
PSMBCE_TRANSPORT_ARRAY pTransportArray;
PSMBCE_TRANSPORT pTransport;
PSMBCE_SERVER_VC_TRANSPORT pServerTransport;
ULONG TransportAddressLength;
PTRANSPORT_ADDRESS pTransportAddress;
PSMBCE_SERVER_TRANSPORT_CONSTRUCTION_CONTEXT pContext;
} SMBCE_VC_CONNECTION_COMPLETION_CONTEXT,
*PSMBCE_VC_CONNECTION_COMPLETION_CONTEXT;
NTSTATUS
VctpCreateConnectionCallback(
IN OUT PRXCE_CONNECTION_COMPLETION_CONTEXT pContext)
/*++
Routine Description:
This is the connection callback routine initiated when the underlying
transports have completed initialization
Arguments:
pCOntext = the connection completion context
Notes:
--*/
{
NTSTATUS Status;
PSMBCE_VC_CONNECTION_COMPLETION_CONTEXT pVcCompletionContext;
PSMBCE_SERVER_TRANSPORT_CONSTRUCTION_CONTEXT pSmbCeContext;
PSMBCEDB_SERVER_ENTRY pServerEntry;
PAGED_CODE();
ASSERT(IoGetCurrentProcess() == RxGetRDBSSProcess());
pVcCompletionContext = (PSMBCE_VC_CONNECTION_COMPLETION_CONTEXT)pContext;
pSmbCeContext = pVcCompletionContext->pContext;
pServerEntry = pSmbCeContext->pServerEntry;
pSmbCeContext->Status = pVcCompletionContext->Status;
Status = pVcCompletionContext->Status;
if (Status == STATUS_SUCCESS) {
PTA_ADDRESS pTaAdress;
PTRANSPORT_ADDRESS pTransportAddress = (PTRANSPORT_ADDRESS)pVcCompletionContext->pConnectionInformation->RemoteAddress;
LONG NoOfAddress;
if (pVcCompletionContext->pTransport == NULL) {
pVcCompletionContext->pTransport =
pVcCompletionContext->pTransportArray->SmbCeTransports[
pVcCompletionContext->AddressIndex];
SmbCeReferenceTransport(pVcCompletionContext->pTransport);
}
//DbgPrint("Remote address %lx \n",pVcCompletionContext->pConnectionInformation->RemoteAddress);
//DbgPrint("Number of TA returned %d %lx\n",pTransportAddress->TAAddressCount,pTransportAddress->Address);
pTaAdress = &pTransportAddress->Address[0];
for (NoOfAddress=0; NoOfAddress<pTransportAddress->TAAddressCount;NoOfAddress++) {
if (pTaAdress->AddressType == TDI_ADDRESS_TYPE_NETBIOS_UNICODE_EX) {
PTDI_ADDRESS_NETBIOS_UNICODE_EX pTdiNetbiosUnicodeExAddress;
pTdiNetbiosUnicodeExAddress = (PTDI_ADDRESS_NETBIOS_UNICODE_EX)pTaAdress->Address;
pTdiNetbiosUnicodeExAddress->EndpointName.Buffer = (PWSTR)pTdiNetbiosUnicodeExAddress->EndpointBuffer;
pTdiNetbiosUnicodeExAddress->RemoteName.Buffer = (PWSTR)pTdiNetbiosUnicodeExAddress->RemoteNameBuffer;
SmbCeAcquireResource();
if (pTdiNetbiosUnicodeExAddress->NameBufferType == NBT_WRITTEN) {
//DbgPrint("DNS name was returned from NetBT %wZ\n", &pTdiNetbiosUnicodeExAddress->RemoteName);
DWORD dwNewSize = pTdiNetbiosUnicodeExAddress->RemoteName.Length+2*sizeof(WCHAR);
// if old allocation is to small get rid of it
if(pServerEntry->DnsName.Buffer != NULL &&
dwNewSize > pServerEntry->DnsName.MaximumLength) {
RxFreePool(pServerEntry->DnsName.Buffer);
pServerEntry->DnsName.Buffer = NULL;
}
// make new allocation (if we don't already have one)
if(pServerEntry->DnsName.Buffer == NULL) {
pServerEntry->DnsName.Buffer = RxAllocatePoolWithTag(NonPagedPool, dwNewSize, MRXSMB_SERVER_POOLTAG);
}
if (pServerEntry->DnsName.Buffer != NULL) {
pServerEntry->DnsName.Length = pTdiNetbiosUnicodeExAddress->RemoteName.Length;
pServerEntry->DnsName.MaximumLength = pServerEntry->DnsName.Length+2*sizeof(WCHAR);
RtlCopyMemory(pServerEntry->DnsName.Buffer,
pTdiNetbiosUnicodeExAddress->RemoteNameBuffer,
pServerEntry->DnsName.Length);
} else {
Status = STATUS_INSUFFICIENT_RESOURCES;
}
} else {
//DbgPrint("DNS name was not returned from NetBT for %wZ\n", &pTdiNetbiosUnicodeExAddress->RemoteName);
if(pServerEntry->DnsName.Buffer != NULL) {
RxFreePool(pServerEntry->DnsName.Buffer);
pServerEntry->DnsName.Buffer = NULL;
}
}
SmbCeReleaseResource();
break;
} else {
//DbgPrint("TA %lx is not a NETBIOS_UNICODE_EX\n", pTaAdress);
pTaAdress = (PTA_ADDRESS)((PCHAR)pTaAdress +
FIELD_OFFSET(TA_ADDRESS,Address) +
pTaAdress->AddressLength);
}
}
if (Status == STATUS_SUCCESS) {
// The Server IP address is not known. Query the underlying
// transport for the remote transport address, i.e., NETBIOS
// name or IP address. This will be subsequently used to
// determine the VC number to be used in session setup and X for
// downlevel servers.
Status = RxCeQueryInformation(
pVcCompletionContext->pVc,
RxCeRemoteAddressInformation,
pVcCompletionContext->pTransportAddress,
pVcCompletionContext->TransportAddressLength);
}
if (Status == STATUS_SUCCESS) {
ULONG NumberOfAddresses;
USHORT AddressLength;
USHORT AddressType;
PBYTE pBuffer = (PBYTE)pVcCompletionContext->pTransportAddress;
// All Transports currently return a data structure in which
// the first four bytes are a ULONG which encodes the number
// of connections opened to the given remote address. The
// actual Transport address follows.
pBuffer += sizeof(ULONG);
// The buffer contains a TRANSPORT_ADDRESS, the first field
// of which is the count.
NumberOfAddresses = SmbGetUlong(pBuffer);
// This is followed by an array of variable length TA_ADDRESS
// structures. At this point pBuffer points to the first
// TA_ADDRESS.
pBuffer += sizeof(ULONG);
while (NumberOfAddresses-- > 0) {
AddressLength = SmbGetUshort(pBuffer);
pBuffer += sizeof(USHORT);
AddressType = SmbGetUshort(pBuffer);
if (AddressType != TDI_ADDRESS_TYPE_IP) {
// skip to the next TA_ADDRESS
pBuffer += AddressLength + sizeof(USHORT);
} else {
// Skip past the type field to position at the
// corresponding TDI_ADDRESS_IP structure
pBuffer += sizeof(USHORT);
// skip to the in_addr field
pBuffer += FIELD_OFFSET(TDI_ADDRESS_IP,in_addr);
// Extract the IP address
RtlCopyMemory(
&pServerEntry->Server.IpAddress,
pBuffer,
sizeof(ULONG));
break;
}
}
} else {
RxDbgTrace(0, Dbg, ("Remote Address Query returned %lx\n",Status));
}
if (NT_SUCCESS(Status)) {
Status = VctCompleteInitialization(
pServerEntry, // The server entry
pVcCompletionContext->pTransport, // the transport/address information
pVcCompletionContext->pServerTransport); // the server transport instance
}
if (NT_SUCCESS(Status)) {
pSmbCeContext->pTransport =
(PSMBCE_SERVER_TRANSPORT)pVcCompletionContext->pServerTransport;
pVcCompletionContext->pServerTransport = NULL;
pVcCompletionContext->pTransport = NULL;
}
pSmbCeContext->Status = Status;
} else {
SmbLogError(Status,
LOG,
VctpCreateConnectionCallback,
LOGULONG(Status)
LOGPTR(pServerEntry)
LOGUSTR(pServerEntry->Name));
}
if (!NT_SUCCESS(Status)) {
RxCeTearDownVC(pVcCompletionContext->pVc);
RxCeTearDownConnection(pVcCompletionContext->pConnection);
SmbCeDereferenceTransport(pVcCompletionContext->pTransport);
pVcCompletionContext->pTransport = NULL;
}
if (pVcCompletionContext->pTransportArray != NULL) {
SmbCeDereferenceTransportArray(pVcCompletionContext->pTransportArray);
}
if (pVcCompletionContext->pTransportAddress != NULL) {
RxFreePool(pVcCompletionContext->pTransportAddress);
}
if (pVcCompletionContext->pConnectionInformation != NULL) {
RxFreePool(pVcCompletionContext->pConnectionInformation);
}
ASSERT(pVcCompletionContext->pTransport == NULL);
if (pVcCompletionContext->pServerTransport != NULL) {
SmbMmFreeServerTransport(
(PSMBCE_SERVER_TRANSPORT)pVcCompletionContext->pServerTransport);
}
RxFreePool(pVcCompletionContext);
pSmbCeContext->State = SmbCeServerVcTransportConstructionEnd;
SmbCeConstructServerTransport(pSmbCeContext);
return STATUS_SUCCESS;
}
NTSTATUS
VctInstantiateServerTransport(
IN OUT PSMBCE_SERVER_TRANSPORT_CONSTRUCTION_CONTEXT pContext)
/*++
Routine Description:
This routine initializes the transport information corresponding to a server
Arguments:
pContext - the transport construction context
Return Value:
STATUS_PENDING - asynchronous construction has been initiated
Notes:
Currently, only connection oriented transports are handled. The current TDI
spec expects handles to be passed in as part of the connect request. This
implies that connect/reconnect/disconnect requests need to be issued from the
process which created the connection. In the case of the SMB mini rdr there
is no FSP associated with it ( threads are borrowed/commandeered ) from the
system process to do all the work. This is the reason for special casing VC
initialization into a separate routine. The server transport initialization
routine handles the other transport initialization and also provides the
context for VC initialization.
--*/
{
NTSTATUS Status = STATUS_PENDING;
PSMBCE_TRANSPORT_ARRAY pTransportArray;
PAGED_CODE();
ASSERT(IoGetCurrentProcess() == RxGetRDBSSProcess());
pTransportArray = SmbCeReferenceTransportArray();
if (pTransportArray == NULL) {
Status = STATUS_NETWORK_UNREACHABLE;
} else {
PSMBCEDB_SERVER_ENTRY pServerEntry;
UNICODE_STRING ServerName;
PSMBCE_VC_CONNECTION_COMPLETION_CONTEXT pCompletionContext;
PRXCE_CONNECTION_INFORMATION InitialConnectionInformation = NULL;
ULONG ServerIpAddress;
pServerEntry = pContext->pServerEntry;
ServerName.Buffer = pServerEntry->Name.Buffer + 1;
ServerName.Length = pServerEntry->Name.Length - sizeof(WCHAR);
ServerName.MaximumLength = pServerEntry->Name.MaximumLength - sizeof(WCHAR);
pServerEntry->Server.IpAddress = 0;
pCompletionContext = (PSMBCE_VC_CONNECTION_COMPLETION_CONTEXT)
RxAllocatePoolWithTag(
NonPagedPool,
sizeof(SMBCE_VC_CONNECTION_COMPLETION_CONTEXT),
MRXSMB_VC_POOLTAG);
if (pCompletionContext != NULL) {
RtlZeroMemory(pCompletionContext,sizeof(SMBCE_VC_CONNECTION_COMPLETION_CONTEXT));
pCompletionContext->pContext = pContext;
pCompletionContext->TransportAddressLength = VctComputeTransportAddressSize(
&ServerName);
pCompletionContext->pTransportAddress = (PTRANSPORT_ADDRESS)
RxAllocatePoolWithTag(
NonPagedPool,
pCompletionContext->TransportAddressLength,
MRXSMB_VC_POOLTAG);
if (pCompletionContext->pTransportAddress == NULL) {
Status = STATUS_INSUFFICIENT_RESOURCES;
} else {
RtlZeroMemory(pCompletionContext->pTransportAddress,
pCompletionContext->TransportAddressLength);
Status = VctBuildTransportAddress(
pCompletionContext->pTransportAddress,
pCompletionContext->TransportAddressLength,
&ServerName,
&ServerIpAddress);
}
if (Status == STATUS_SUCCESS) {
pCompletionContext->pServerTransport = (PSMBCE_SERVER_VC_TRANSPORT)
SmbMmAllocateServerTransport(
SMBCE_STT_VC);
if (pCompletionContext->pServerTransport == NULL) {
Status = STATUS_INSUFFICIENT_RESOURCES;
} else {
pCompletionContext->pConnection =
&(pCompletionContext->pServerTransport->RxCeConnection);
pCompletionContext->pVc =
&(pCompletionContext->pServerTransport->Vcs[0].RxCeVc);
}
}
if (Status == STATUS_SUCCESS) {
InitialConnectionInformation = RxAllocatePoolWithTag(
NonPagedPool,
sizeof(RXCE_CONNECTION_INFORMATION),
MRXSMB_VC_POOLTAG);
if (InitialConnectionInformation == NULL) {
Status = STATUS_INSUFFICIENT_RESOURCES;
} else {
InitialConnectionInformation->UserDataLength = 0;
InitialConnectionInformation->OptionsLength = 0;
InitialConnectionInformation->RemoteAddressLength = pCompletionContext->TransportAddressLength;
InitialConnectionInformation->RemoteAddress = pCompletionContext->pTransportAddress;
}
}
if (Status == STATUS_SUCCESS) {
PSMBCE_TRANSPORT pTransport;
pCompletionContext->pTransport = NULL;
pCompletionContext->pTransportArray = pTransportArray;
pCompletionContext->pConnectionInformation = InitialConnectionInformation;
//DbgPrint("Remote address %lx \n",pCompletionContext->pConnectionInformation->RemoteAddress);
if (pServerEntry->PreferredTransport != NULL) {
pTransport = pServerEntry->PreferredTransport;
Status = RxCeBuildConnection(
&pTransport->RxCeAddress,
InitialConnectionInformation,
&MRxSmbVctConnectionEventHandler,
pServerEntry,
pCompletionContext->pConnection,
pCompletionContext->pVc);
if (Status == STATUS_SUCCESS) {
pCompletionContext->pTransport = pTransport;
SmbCeReferenceTransport(pTransport);
}
ASSERT(Status != STATUS_PENDING);
if (Status != STATUS_SUCCESS) {
SmbCeDereferenceTransport(pServerEntry->PreferredTransport);
pServerEntry->PreferredTransport = NULL;
}
pCompletionContext->Status = Status;
VctpCreateConnectionCallback(
(PRXCE_CONNECTION_COMPLETION_CONTEXT)pCompletionContext);
Status = STATUS_PENDING;
} else {
Status = RxCeBuildConnectionOverMultipleTransports(
MRxSmbDeviceObject,
MRxSmbObeyBindingOrder ?
RxCeSelectBestSuccessfulTransport :
RxCeSelectFirstSuccessfulTransport,
pCompletionContext->pTransportArray->Count,
pCompletionContext->pTransportArray->LocalAddresses,
&ServerName,
InitialConnectionInformation,
&MRxSmbVctConnectionEventHandler,
pServerEntry,
VctpCreateConnectionCallback,
(PRXCE_CONNECTION_COMPLETION_CONTEXT)pCompletionContext);
// ASSERT(Status == STATUS_PENDING);
}
}
} else {
Status = STATUS_INSUFFICIENT_RESOURCES;
}
if (Status != STATUS_PENDING) {
if (pCompletionContext != NULL) {
if (pCompletionContext->pTransportAddress != NULL) {
RxFreePool(pCompletionContext->pTransportAddress);
}
if (pCompletionContext->pServerTransport != NULL) {
RxFreePool(pCompletionContext->pServerTransport);
}
RxFreePool(pCompletionContext);
}
if (InitialConnectionInformation != NULL) {
RxFreePool(InitialConnectionInformation);
}
SmbCeDereferenceTransportArray(pTransportArray);
}
}
if (Status != STATUS_PENDING) {
ASSERT(Status != STATUS_SUCCESS);
pContext->State = SmbCeServerVcTransportConstructionEnd;
pContext->Status = Status;
// Call the construct server transport routine to complete the construction
SmbCeConstructServerTransport(pContext);
Status = STATUS_PENDING;
}
return Status;
}
NTSTATUS
VctTearDownServerTransport(
PSMBCE_SERVER_TRANSPORT pServerTransport)
{
NTSTATUS Status;
PKEVENT pRundownEvent = pServerTransport->pRundownEvent;
PAGED_CODE();
ASSERT(IoGetCurrentProcess() == RxGetRDBSSProcess());
Status = VctUninitialize(pServerTransport);
if (pRundownEvent != NULL) {
KeSetEvent(pRundownEvent, 0, FALSE );
}
return Status;
}
NTSTATUS
VctInitiateDisconnect(
PSMBCE_SERVER_TRANSPORT pServerTransport)
{
ULONG VcIndex;
PSMBCE_VC pVc;
PSMBCE_SERVER_VC_TRANSPORT pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pServerTransport;
ASSERT(IoGetCurrentProcess() == RxGetRDBSSProcess());
for (VcIndex = 0; VcIndex < pVcTransport->MaximumNumberOfVCs; VcIndex++) {
NTSTATUS Status;
pVc = &pVcTransport->Vcs[VcIndex];
Status = RxCeInitiateVCDisconnect(&pVc->RxCeVc);
if (Status != STATUS_SUCCESS) {
RxDbgTrace(0, Dbg, ("VctInitiateDisconnect: Disconnected Status %lxd\n",Status));
}
}
return STATUS_SUCCESS;
}
PFILE_OBJECT
SmbCepReferenceEndpointFileObject(
PSMBCE_SERVER_TRANSPORT pTransport)
/*++
Routine Description:
This routine returns the connection file object associated with
a transport
Arguments:
pTransport - the transport instance
Notes:
This routine currently returns this for VC transports. When we implement
other transports a suitable abstraction needs to be implemented
--*/
{
PFILE_OBJECT pEndpointFileObject = NULL;
PSMBCE_OBJECT_HEADER pHeader = (PSMBCE_OBJECT_HEADER)pTransport;
if ((pHeader != NULL) && (pHeader->ObjectType == SMBCE_STT_VC)) {
PSMBCE_SERVER_VC_TRANSPORT pVcTransport = (PSMBCE_SERVER_VC_TRANSPORT)pTransport;
pEndpointFileObject = pVcTransport->Vcs[0].RxCeVc.pEndpointFileObject;
if (pEndpointFileObject != NULL) {
ObReferenceObject(pEndpointFileObject);
}
}
return pEndpointFileObject;
}

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