485 lines
13 KiB
C
485 lines
13 KiB
C
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/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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ntos\tdi\isn\fwd\ipxbind.c
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Abstract:
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IPX Forwarder Driver interface with IPX stack driver
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Author:
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Vadim Eydelman
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Revision History:
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--*/
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#include "precomp.h"
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// global handle of the IPX driver
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HANDLE HdlIpxFile;
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// Buffer for IPX binding output structure
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PIPX_INTERNAL_BIND_RIP_OUTPUT IPXBindOutput=NULL;
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NTSTATUS
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IpxFwdFindRoute (
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IN PUCHAR Network,
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IN PUCHAR Node,
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OUT PIPX_FIND_ROUTE_REQUEST RouteEntry
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);
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/*++
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*******************************************************************
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B i n d T o I p x D r i v e r
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Routine Description:
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Exchanges binding information with IPX stack driver
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Arguments:
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None
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Return Value:
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STATUS_SUCCESS - exchange was done OK
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STATUS_INSUFFICIENT_RESOURCES - could not allocate buffers for
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info exchange
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error status returned by IPX stack driver
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*******************************************************************
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--*/
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NTSTATUS
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BindToIpxDriver (
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KPROCESSOR_MODE requestorMode
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) {
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NTSTATUS status;
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IO_STATUS_BLOCK IoStatusBlock;
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OBJECT_ATTRIBUTES ObjectAttributes;
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PIPX_INTERNAL_BIND_INPUT bip;
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UNICODE_STRING UstrIpxFileName;
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PWSTR WstrIpxFileName;
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ASSERT (IPXBindOutput==NULL);
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// Read Ipx exported device name from the registry
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status = ReadIpxDeviceName (&WstrIpxFileName);
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if (!NT_SUCCESS (status))
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return status;
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RtlInitUnicodeString (&UstrIpxFileName, WstrIpxFileName);
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InitializeObjectAttributes(
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&ObjectAttributes,
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&UstrIpxFileName,
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OBJ_CASE_INSENSITIVE,
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NULL,
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NULL
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);
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if (requestorMode==UserMode)
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status = ZwCreateFile(&HdlIpxFile,
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SYNCHRONIZE | GENERIC_READ,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_OPEN,
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FILE_SYNCHRONOUS_IO_NONALERT,
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NULL,
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0L);
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else
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status = NtCreateFile(&HdlIpxFile,
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SYNCHRONIZE | GENERIC_READ,
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&ObjectAttributes,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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FILE_OPEN,
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FILE_SYNCHRONOUS_IO_NONALERT,
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NULL,
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0L);
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if (!NT_SUCCESS(status)) {
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_ERROR,
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("IpxFwd: Open of the IPX driver failed with %lx\n", status));
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return status;
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}
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_INFORMATION,
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("IpxFwd: Open of the IPX driver was successful.\n"));
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// First, send a IOCTL to find out how much data we need to allocate
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if ((bip = ExAllocatePoolWithTag (
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PagedPool,
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sizeof(IPX_INTERNAL_BIND_INPUT),
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FWD_POOL_TAG)) == NULL) {
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if (ExGetPreviousMode()!=KernelMode)
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ZwClose (HdlIpxFile);
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else
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NtClose (HdlIpxFile);
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_ERROR,
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("IpxFwd: Could not allocate input binding buffer!\n"));
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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//
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// Zero out the memory so that there are no garbage pointers.
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// - ShreeM
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//
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RtlZeroMemory(bip, sizeof(IPX_INTERNAL_BIND_INPUT));
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// fill in our bind data
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// bip->Version = 1;
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bip->Version = ISN_VERSION;
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bip->Identifier = IDENTIFIER_RIP;
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bip->BroadcastEnable = TRUE;
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bip->LookaheadRequired = IPXH_HDRSIZE;
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bip->ProtocolOptions = 0;
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bip->ReceiveHandler = IpxFwdReceive;
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bip->ReceiveCompleteHandler = IpxFwdReceiveComplete;
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bip->SendCompleteHandler = IpxFwdSendComplete;
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bip->TransferDataCompleteHandler = IpxFwdTransferDataComplete;
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bip->FindRouteCompleteHandler = NULL;
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bip->LineUpHandler = IpxFwdLineUp;
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bip->LineDownHandler = IpxFwdLineDown;
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bip->InternalSendHandler = IpxFwdInternalSend;
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bip->FindRouteHandler = IpxFwdFindRoute;
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bip->InternalReceiveHandler = IpxFwdInternalReceive;
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// bip->RipParameters = GlobalWanNetwork ? IPX_RIP_PARAM_GLOBAL_NETWORK : 0;
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if (requestorMode==UserMode)
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status = ZwDeviceIoControlFile(
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HdlIpxFile, // HANDLE to File
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NULL, // HANDLE to Event
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NULL, // ApcRoutine
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NULL, // ApcContext
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&IoStatusBlock, // IO_STATUS_BLOCK
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IOCTL_IPX_INTERNAL_BIND, // IoControlCode
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bip, // Input Buffer
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sizeof(IPX_INTERNAL_BIND_INPUT),// Input Buffer Length
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NULL, // Output Buffer
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0); // Output Buffer Length
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else
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status = NtDeviceIoControlFile(
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HdlIpxFile, // HANDLE to File
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NULL, // HANDLE to Event
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NULL, // ApcRoutine
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NULL, // ApcContext
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&IoStatusBlock, // IO_STATUS_BLOCK
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IOCTL_IPX_INTERNAL_BIND, // IoControlCode
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bip, // Input Buffer
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sizeof(IPX_INTERNAL_BIND_INPUT),// Input Buffer Length
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NULL, // Output Buffer
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0); // Output Buffer Length
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if (status == STATUS_PENDING) {
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if (requestorMode==UserMode)
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status = ZwWaitForSingleObject(
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HdlIpxFile,
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FALSE,
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NULL);
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else
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status = NtWaitForSingleObject(
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HdlIpxFile,
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FALSE,
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NULL);
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if (NT_SUCCESS(status))
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status = IoStatusBlock.Status;
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}
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if (status != STATUS_BUFFER_TOO_SMALL) {
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_ERROR,
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("IpxFwd: Ioctl to the IPX driver failed with %lx\n", status));
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ExFreePool(bip);
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if (requestorMode==UserMode)
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ZwClose (HdlIpxFile);
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else
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NtClose (HdlIpxFile);
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return STATUS_INVALID_PARAMETER;
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}
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if ((IPXBindOutput = (PIPX_INTERNAL_BIND_RIP_OUTPUT)
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ExAllocatePoolWithTag(NonPagedPool,
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(ULONG)IoStatusBlock.Information,
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FWD_POOL_TAG)) == NULL) {
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ExFreePool(bip);
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if (requestorMode==UserMode)
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ZwClose (HdlIpxFile);
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else
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NtClose (HdlIpxFile);
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_ERROR,
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("IpxFwd: Could not allocate output binding buffer!\n"));
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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if (requestorMode==UserMode)
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status = ZwDeviceIoControlFile(
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HdlIpxFile, // HANDLE to File
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NULL, // HANDLE to Event
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NULL, // ApcRoutine
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NULL, // ApcContext
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&IoStatusBlock, // IO_STATUS_BLOCK
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IOCTL_IPX_INTERNAL_BIND, // IoControlCode
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bip, // Input Buffer
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sizeof(IPX_INTERNAL_BIND_INPUT),// Input Buffer Length
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IPXBindOutput, // Output Buffer
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(ULONG)IoStatusBlock.Information); // Output Buffer Length
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else
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status = NtDeviceIoControlFile(
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HdlIpxFile, // HANDLE to File
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NULL, // HANDLE to Event
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NULL, // ApcRoutine
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NULL, // ApcContext
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&IoStatusBlock, // IO_STATUS_BLOCK
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IOCTL_IPX_INTERNAL_BIND, // IoControlCode
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bip, // Input Buffer
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sizeof(IPX_INTERNAL_BIND_INPUT),// Input Buffer Length
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IPXBindOutput, // Output Buffer
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(ULONG)IoStatusBlock.Information); // Output Buffer Length
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if (status == STATUS_PENDING) {
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if (requestorMode==UserMode)
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status = ZwWaitForSingleObject(
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HdlIpxFile,
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(BOOLEAN)FALSE,
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NULL);
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else
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status = NtWaitForSingleObject(
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HdlIpxFile,
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(BOOLEAN)FALSE,
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NULL);
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if (NT_SUCCESS(status))
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status = IoStatusBlock.Status;
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}
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if (!NT_SUCCESS (status)) {
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_ERROR,
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("IpxFwd: Ioctl to the IPX driver failed with %lx\n", IoStatusBlock.Status));
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ExFreePool(bip);
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ExFreePool(IPXBindOutput);
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IPXBindOutput = NULL;
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if (requestorMode==UserMode)
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ZwClose (HdlIpxFile);
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else
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NtClose (HdlIpxFile);
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return status;
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}
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_INFORMATION,
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("IpxFwd: Succesfuly bound to the IPX driver\n"));
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ExFreePool (bip);
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ExFreePool (WstrIpxFileName);
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return status;
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}
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/*++
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*******************************************************************
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U n b i n d F r o m I p x D r i v e r
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Routine Description:
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Closes connection to IPX stack driver
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Arguments:
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None
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Return Value:
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None
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*******************************************************************
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--*/
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VOID
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UnbindFromIpxDriver (
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KPROCESSOR_MODE requestorMode
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) {
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// Free binding output buffer and close driver handle
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ASSERT (IPXBindOutput!=NULL);
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ExFreePool (IPXBindOutput);
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IPXBindOutput = NULL;
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IpxFwdDbgPrint (DBG_IPXBIND, DBG_WARNING,
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("IpxFwd: Closing IPX driver handle\n"));
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if (requestorMode==UserMode)
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ZwClose (HdlIpxFile);
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else
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NtClose (HdlIpxFile);
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}
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/*++
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*******************************************************************
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F w F i n d R o u t e
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Routine Description:
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This routine is provided by the Kernel Forwarder to find the route
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to a given node and network
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Arguments:
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Network - the destination network
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Node - destination node
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RouteEntry - filled in by the Forwarder if a route exists
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Return Value:
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STATUS_SUCCESS
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STATUS_NETWORK_UNREACHABLE - if the findroute failed
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*******************************************************************
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--*/
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NTSTATUS
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IpxFwdFindRoute (
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IN PUCHAR Network,
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IN PUCHAR Node,
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OUT PIPX_FIND_ROUTE_REQUEST RouteEntry
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) {
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PINTERFACE_CB ifCB;
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ULONG net;
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KIRQL oldIRQL;
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NTSTATUS status = STATUS_NETWORK_UNREACHABLE;
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PFWD_ROUTE fwRoute;
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if (!EnterForwarder ())
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return STATUS_UNSUCCESSFUL;
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net = GETULONG (Network);
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ifCB = FindDestination (net, Node, &fwRoute);
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if (ifCB!=NULL) {
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if (IS_IF_ENABLED(ifCB)) {
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KeAcquireSpinLock (&ifCB->ICB_Lock, &oldIRQL);
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switch (ifCB->ICB_Stats.OperationalState) {
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case FWD_OPER_STATE_UP:
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IPX_NET_CPY (&RouteEntry->Network, Network);
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if (fwRoute->FR_Network==ifCB->ICB_Network) {
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if (Node!=NULL) {
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IPX_NODE_CPY (RouteEntry->LocalTarget.MacAddress, Node);
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}
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else {
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IPX_NODE_CPY (RouteEntry->LocalTarget.MacAddress,
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BROADCAST_NODE);
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}
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}
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else {
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IPX_NODE_CPY (RouteEntry->LocalTarget.MacAddress,
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fwRoute->FR_NextHopAddress);
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}
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if (ifCB!=InternalInterface) {
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ADAPTER_CONTEXT_TO_LOCAL_TARGET (
|
|||
|
|
ifCB->ICB_AdapterContext,
|
|||
|
|
&RouteEntry->LocalTarget);
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
CONSTANT_ADAPTER_CONTEXT_TO_LOCAL_TARGET (
|
|||
|
|
VIRTUAL_NET_ADAPTER_CONTEXT,
|
|||
|
|
&RouteEntry->LocalTarget);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Fill in the hop count and tick count
|
|||
|
|
//
|
|||
|
|
RouteEntry->TickCount = fwRoute->FR_TickCount;
|
|||
|
|
RouteEntry->HopCount = fwRoute->FR_HopCount;
|
|||
|
|
|
|||
|
|
status = STATUS_SUCCESS;
|
|||
|
|
break;
|
|||
|
|
case FWD_OPER_STATE_SLEEPING:
|
|||
|
|
IPX_NODE_CPY (&RouteEntry->LocalTarget.MacAddress,
|
|||
|
|
fwRoute->FR_NextHopAddress);
|
|||
|
|
CONSTANT_ADAPTER_CONTEXT_TO_LOCAL_TARGET (DEMAND_DIAL_ADAPTER_CONTEXT,
|
|||
|
|
&RouteEntry->LocalTarget);
|
|||
|
|
status = STATUS_SUCCESS;
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Fill in the hop count and tick count
|
|||
|
|
//
|
|||
|
|
RouteEntry->TickCount = fwRoute->FR_TickCount;
|
|||
|
|
RouteEntry->HopCount = fwRoute->FR_HopCount;
|
|||
|
|
|
|||
|
|
|
|||
|
|
break;
|
|||
|
|
case FWD_OPER_STATE_DOWN:
|
|||
|
|
status = STATUS_NETWORK_UNREACHABLE;
|
|||
|
|
break;
|
|||
|
|
default:
|
|||
|
|
ASSERTMSG ("Inavalid operational state", FALSE);
|
|||
|
|
}
|
|||
|
|
KeReleaseSpinLock (&ifCB->ICB_Lock, oldIRQL);
|
|||
|
|
#if DBG
|
|||
|
|
if (Node!=NULL) {
|
|||
|
|
if (NT_SUCCESS (status)) {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXBIND, DBG_INFORMATION,
|
|||
|
|
("IpxFwd: Found route for IPX driver:"
|
|||
|
|
" %08lX:%02X%02X%02X%02X%02X%02X"
|
|||
|
|
" -> %ld(%ld):%02X%02X%02X%02X%02X%02X\n",
|
|||
|
|
net, Node[0],Node[1],Node[2],Node[3],Node[4],Node[5],
|
|||
|
|
ifCB->ICB_Index, RouteEntry->LocalTarget.NicId,
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[0],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[1],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[2],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[3],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[4],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[5]));
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXROUTE, DBG_WARNING,
|
|||
|
|
("IpxFwd: Network unreachable for:"
|
|||
|
|
" %08lX:%02X%02X%02X%02X%02X%02X -> %ld.\n",
|
|||
|
|
net, Node[0],Node[1],Node[2],Node[3],Node[4],Node[5],
|
|||
|
|
ifCB->ICB_Index));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
if (NT_SUCCESS (status)) {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXBIND, DBG_INFORMATION,
|
|||
|
|
("IpxFwd: Found route for IPX driver:"
|
|||
|
|
" %08lX"
|
|||
|
|
" -> %ld(%ld):%02X%02X%02X%02X%02X%02X\n",
|
|||
|
|
net, ifCB->ICB_Index, RouteEntry->LocalTarget.NicId,
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[0],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[1],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[2],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[3],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[4],
|
|||
|
|
RouteEntry->LocalTarget.MacAddress[5]));
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXROUTE, DBG_WARNING,
|
|||
|
|
("IpxFwd: Network unreachable for:"
|
|||
|
|
" %08lX -> %ld.\n", net));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
ReleaseInterfaceReference (ifCB);
|
|||
|
|
ReleaseRouteReference (fwRoute);
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
#if DBG
|
|||
|
|
if (Node!=NULL) {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXROUTE, DBG_WARNING,
|
|||
|
|
("IpxFwd: No route for:"
|
|||
|
|
" %08lX:%02X%02X%02X%02X%02X%02X.\n",
|
|||
|
|
net, Node[0],Node[1],Node[2],Node[3],Node[4],Node[5]));
|
|||
|
|
}
|
|||
|
|
else {
|
|||
|
|
IpxFwdDbgPrint (DBG_IPXROUTE, DBG_WARNING,
|
|||
|
|
("IpxFwd: No route for: %08lX.\n", net));
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
status = STATUS_NETWORK_UNREACHABLE;
|
|||
|
|
}
|
|||
|
|
LeaveForwarder ();
|
|||
|
|
return status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|