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https://github.com/reactos/reactos.git
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[TCPIP] Implement IOCTL_ICMP_ECHO_REQUEST in tcpip.sys
Also clean up ICMP handling code in sdk/lib/drivers/ip CORE-10760
This commit is contained in:
Victor Perevertkin
Victor Perevertkin
parent
dd2ff41dfc
commit
740a859e92
9 changed files with 505 additions and 241 deletions
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@ -17,6 +17,7 @@ list(APPEND SOURCE
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tcpip/cinfo.c
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tcpip/dispatch.c
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tcpip/fileobjs.c
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tcpip/icmp.c
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tcpip/iinfo.c
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tcpip/info.c
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tcpip/lock.c
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@ -7,12 +7,15 @@
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#pragma once
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#include <pshpack1.h>
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typedef struct ICMP_HEADER {
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UCHAR Type; /* ICMP message type */
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UCHAR Code; /* ICMP message code */
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USHORT Checksum; /* ICMP message checksum */
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ULONG Unused; /* ICMP unused */
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UINT8 Type; /* ICMP message type */
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UINT8 Code; /* ICMP message code */
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UINT16 Checksum; /* ICMP message checksum */
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UINT16 Identifier; /* ICMP Echo message identifier */
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UINT16 Seq; /* ICMP Echo message sequence num */
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} ICMP_HEADER, *PICMP_HEADER;
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#include <poppack.h>
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/* ICMP message types */
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#define ICMP_TYPE_ECHO_REPLY 0 /* Echo reply */
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@ -48,6 +51,12 @@ typedef struct ICMP_HEADER {
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/* ICMP codes for ICMP_TYPE_PARAMETER */
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#define ICMP_CODE_TP_POINTER 1 /* Pointer indicates the error */
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NTSTATUS
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DispEchoRequest(
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PDEVICE_OBJECT DeviceObject,
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PIRP Irp,
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PIO_STACK_LOCATION IrpSp);
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NTSTATUS ICMPSendDatagram(
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PADDRESS_FILE AddrFile,
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PTDI_CONNECTION_INFORMATION ConnInfo,
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@ -63,11 +72,6 @@ VOID ICMPReceive(
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PIP_INTERFACE Interface,
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PIP_PACKET IPPacket);
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VOID ICMPTransmit(
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PIP_PACKET IPPacket,
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PIP_TRANSMIT_COMPLETE Complete,
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PVOID Context);
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VOID ICMPReply(
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PIP_INTERFACE Interface,
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PIP_PACKET IPPacket,
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@ -15,7 +15,9 @@
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#include <tilists.h>
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#include <lock.h>
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#include <interface.h>
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#include <fileobjs.h>
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#include <chew/chew.h>
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#include <pseh/pseh2.h>
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#include <psdk/ipexport.h>
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#endif /* _TCPIP_PCH_ */
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@ -36,4 +36,14 @@ NTSTATUS AddGenericHeaderIPv4(
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UINT ExtraLength,
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PVOID *NextHeader );
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NTSTATUS BuildRawIpPacket(
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PADDRESS_FILE AddrFile,
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PIP_PACKET Packet,
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PIP_ADDRESS RemoteAddress,
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USHORT RemotePort,
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PIP_ADDRESS LocalAddress,
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USHORT LocalPort,
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PCHAR DataBuffer,
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UINT DataLen);
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/* EOF */
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431
drivers/network/tcpip/tcpip/icmp.c
Normal file
431
drivers/network/tcpip/tcpip/icmp.c
Normal file
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@ -0,0 +1,431 @@
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/*
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* PROJECT: ReactOS TCP/IP protocol driver
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* LICENCE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
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* PURPOSE: ICMP functions implementation
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* COPYRIGHT: 2019 Victor Perevertkin (victor.perevertkin@reactos.org)
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*/
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#include "precomp.h"
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#include <checksum.h>
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#define UINT16_MAX (65535U)
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typedef struct _ICMP_PACKET_CONTEXT
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{
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TDI_REQUEST TdiRequest;
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KDPC TimeoutDpc;
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KEVENT InitializationFinishedEvent;
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KEVENT DatagramProcessedEvent;
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LARGE_INTEGER TimerResolution;
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INT64 StartTicks;
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PIRP Irp;
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PUCHAR CurrentReply;
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UINT32 RemainingSize;
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LONG nReplies;
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PIO_WORKITEM FinishWorker;
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KTIMER TimeoutTimer;
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} ICMP_PACKET_CONTEXT, *PICMP_PACKET_CONTEXT;
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static volatile INT16 IcmpSequence = 0;
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static
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UINT32
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GetReplyStatus(PICMP_HEADER IcmpHeader)
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{
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switch (IcmpHeader->Type)
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{
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case ICMP_TYPE_ECHO_REPLY:
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return IP_SUCCESS;
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case ICMP_TYPE_DEST_UNREACH:
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switch (IcmpHeader->Code)
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{
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case ICMP_CODE_DU_NET_UNREACH:
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return IP_DEST_NET_UNREACHABLE;
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case ICMP_CODE_DU_HOST_UNREACH:
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return IP_DEST_HOST_UNREACHABLE;
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case ICMP_CODE_DU_PROTOCOL_UNREACH:
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return IP_DEST_PROT_UNREACHABLE;
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case ICMP_CODE_DU_PORT_UNREACH:
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return IP_DEST_PORT_UNREACHABLE;
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case ICMP_CODE_DU_FRAG_DF_SET:
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return IP_DEST_NET_UNREACHABLE;
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case ICMP_CODE_DU_SOURCE_ROUTE_FAILED:
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return IP_BAD_ROUTE;
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default:
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return IP_DEST_NET_UNREACHABLE;
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}
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case ICMP_TYPE_SOURCE_QUENCH:
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return IP_SOURCE_QUENCH;
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case ICMP_TYPE_TIME_EXCEEDED:
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if (IcmpHeader->Code == ICMP_CODE_TE_REASSEMBLY)
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return IP_TTL_EXPIRED_REASSEM;
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else
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return IP_TTL_EXPIRED_TRANSIT;
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case ICMP_TYPE_PARAMETER:
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return IP_PARAM_PROBLEM;
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default:
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return IP_REQ_TIMED_OUT;
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}
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}
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static
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VOID
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ClearReceiveHandler(
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_In_ PADDRESS_FILE AddrFile)
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{
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KIRQL OldIrql;
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LockObject(AddrFile, &OldIrql);
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AddrFile->RegisteredReceiveDatagramHandler = FALSE;
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UnlockObject(AddrFile, OldIrql);
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}
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IO_WORKITEM_ROUTINE EndRequestHandler;
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VOID
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NTAPI
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EndRequestHandler(
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PDEVICE_OBJECT DeviceObject,
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PVOID _Context)
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{
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PICMP_PACKET_CONTEXT Context = (PICMP_PACKET_CONTEXT)_Context;
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PIO_STACK_LOCATION CurrentStack;
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PIRP Irp;
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UINT32 nReplies;
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KIRQL OldIrql;
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KeWaitForSingleObject(&Context->DatagramProcessedEvent, Executive, KernelMode, FALSE, NULL);
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TI_DbgPrint(DEBUG_ICMP, ("Finishing request Context: %p\n", Context));
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Irp = Context->Irp;
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CurrentStack = IoGetCurrentIrpStackLocation(Irp);
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if (Context->nReplies > 0)
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{
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((PICMP_ECHO_REPLY)Irp->AssociatedIrp.SystemBuffer)->Reserved = Context->nReplies;
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Irp->IoStatus.Status = STATUS_SUCCESS;
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Irp->IoStatus.Information = CurrentStack->Parameters.DeviceIoControl.OutputBufferLength;
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}
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else
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{
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PICMP_ECHO_REPLY ReplyBuffer = (PICMP_ECHO_REPLY)Irp->AssociatedIrp.SystemBuffer;
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RtlZeroMemory(ReplyBuffer, sizeof(*ReplyBuffer));
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ReplyBuffer->Status = IP_REQ_TIMED_OUT;
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Irp->IoStatus.Status = STATUS_TIMEOUT;
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Irp->IoStatus.Information = sizeof(*ReplyBuffer);
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}
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// for debugging
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nReplies = ((PICMP_ECHO_REPLY)Irp->AssociatedIrp.SystemBuffer)->Reserved;
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// taken from dispatch.c:IRPFinish
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IoAcquireCancelSpinLock(&OldIrql);
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IoSetCancelRoutine(Irp, NULL);
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IoReleaseCancelSpinLock(OldIrql);
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IoCompleteRequest(Irp, IO_NETWORK_INCREMENT);
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{
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NTSTATUS _Status = FileCloseAddress(&Context->TdiRequest);
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ASSERT(NT_SUCCESS(_Status));
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}
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IoFreeWorkItem(Context->FinishWorker);
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ExFreePoolWithTag(Context, OUT_DATA_TAG);
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TI_DbgPrint(DEBUG_ICMP, ("Leaving, nReplies: %u\n", nReplies));
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}
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NTSTATUS
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NTAPI
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ReceiveDatagram(
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_In_opt_ PVOID TdiEventContext,
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_In_ LONG SourceAddressLength,
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_In_reads_bytes_(SourceAddressLength) PVOID SourceAddress,
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_In_ LONG OptionsLength,
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_In_reads_bytes_opt_(OptionsLength) PVOID Options,
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_In_ ULONG ReceiveDatagramFlags,
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_In_ ULONG BytesIndicated,
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_In_ ULONG BytesAvailable,
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_Out_ ULONG *OutBytesTaken,
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_In_ PVOID Tsdu,
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_Out_opt_ PIRP *IoRequestPacket)
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{
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PICMP_PACKET_CONTEXT Context = TdiEventContext;
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PIPv4_HEADER IpHeader = Tsdu;
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UINT16 IpHeaderSize = sizeof(IPv4_HEADER) + OptionsLength;
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PICMP_HEADER IcmpHeader = (PICMP_HEADER)((PUCHAR)Tsdu + IpHeaderSize);
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PVOID DataBuffer = (PUCHAR)Tsdu + IpHeaderSize + sizeof(ICMP_HEADER);
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INT32 DataSize = min(BytesAvailable, UINT16_MAX) - IpHeaderSize - sizeof(ICMP_HEADER);
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INT64 CurrentTime;
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UINT32 RoundTripTime;
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PICMP_ECHO_REPLY CurrentReply;
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PUCHAR CurrentUserBuffer;
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// do not handle echo requests
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if (DataSize >= 0 && IcmpHeader->Type == ICMP_TYPE_ECHO_REQUEST)
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{
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return STATUS_SUCCESS;
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}
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KeWaitForSingleObject(&Context->InitializationFinishedEvent, Executive, KernelMode, FALSE, NULL);
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KeClearEvent(&Context->DatagramProcessedEvent);
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ASSERT(SourceAddressLength == sizeof(IPAddr));
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TI_DbgPrint(DEBUG_ICMP, ("Received datagram Context: 0x%p\n", TdiEventContext));
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CurrentTime = KeQueryPerformanceCounter(NULL).QuadPart;
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RoundTripTime = (CurrentTime - Context->StartTicks) * 1000 / Context->TimerResolution.QuadPart;
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CurrentReply = (PICMP_ECHO_REPLY)Context->CurrentReply;
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if (Context->RemainingSize >= sizeof(ICMP_ECHO_REPLY) && DataSize >= 0)
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{
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TI_DbgPrint(DEBUG_ICMP, ("RemainingSize: %u, RoundTripTime: %u\n", Context->RemainingSize, RoundTripTime));
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memcpy(&CurrentReply->Address, SourceAddress, sizeof(CurrentReply->Address));
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CurrentReply->Status = GetReplyStatus(IcmpHeader);
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CurrentReply->RoundTripTime = RoundTripTime;
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CurrentReply->Reserved = 0;
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CurrentReply->Data = NULL;
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CurrentReply->DataSize = 0;
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CurrentReply->Options.Ttl = IpHeader->Ttl;
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CurrentReply->Options.Tos = IpHeader->Tos;
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CurrentReply->Options.Flags = IpHeader->FlagsFragOfs >> 13;
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CurrentReply->Options.OptionsData = NULL;
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CurrentReply->Options.OptionsSize = 0;
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Context->RemainingSize -= sizeof(ICMP_ECHO_REPLY);
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Context->CurrentReply += sizeof(ICMP_ECHO_REPLY);
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}
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CurrentUserBuffer = (PUCHAR)Context->Irp->UserBuffer + (Context->CurrentReply - (PUCHAR)Context->Irp->AssociatedIrp.SystemBuffer);
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if (DataSize > 0 && Context->RemainingSize > 0)
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{
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UINT32 _DataSize = min(Context->RemainingSize, DataSize);
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memcpy(Context->CurrentReply + Context->RemainingSize - _DataSize, DataBuffer, _DataSize);
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CurrentReply->Data = CurrentUserBuffer + Context->RemainingSize - _DataSize;
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CurrentReply->DataSize = _DataSize;
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Context->RemainingSize -= _DataSize;
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// Context->ReplyBuffer += _DataSize;
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}
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else
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{
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TI_DbgPrint(DEBUG_ICMP, ("RemainingSize: %u, DataSize: %d\n", Context->RemainingSize, DataSize));
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}
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if (OptionsLength > 0 && Context->RemainingSize > 0)
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{
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UINT32 _OptSize = min(Context->RemainingSize, OptionsLength);
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memcpy(Context->CurrentReply + Context->RemainingSize + _OptSize, Options, _OptSize);
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CurrentReply->Options.OptionsData = CurrentUserBuffer + Context->RemainingSize + _OptSize;
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CurrentReply->Options.OptionsSize = _OptSize;
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Context->RemainingSize -= _OptSize;
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// Context->ReplyBuffer += _OptSize;
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}
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else
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{
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TI_DbgPrint(DEBUG_ICMP, ("RemainingSize: %u, OptSize: %d\n", Context->RemainingSize, OptionsLength));
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}
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Context->nReplies++;
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if (Context->RemainingSize < sizeof(ICMP_ECHO_REPLY))
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{
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TI_DbgPrint(DEBUG_ICMP, ("The space is over: %u\n", Context->RemainingSize));
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// if the timer was inserted, that means DPC has not been queued yet
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if (KeCancelTimer(&Context->TimeoutTimer))
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{
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PADDRESS_FILE AddrFile = (PADDRESS_FILE)Context->TdiRequest.Handle.AddressHandle;
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ClearReceiveHandler(AddrFile);
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IoQueueWorkItem(Context->FinishWorker, &EndRequestHandler, DelayedWorkQueue, Context);
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}
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}
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KeSetEvent(&Context->DatagramProcessedEvent, IO_NO_INCREMENT, FALSE);
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return STATUS_SUCCESS;
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}
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KDEFERRED_ROUTINE TimeoutHandler;
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VOID
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NTAPI
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TimeoutHandler(
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_In_ PKDPC Dpc,
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_In_opt_ PVOID _Context,
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_In_opt_ PVOID SystemArgument1,
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_In_opt_ PVOID SystemArgument2)
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{
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PICMP_PACKET_CONTEXT Context = (PICMP_PACKET_CONTEXT)_Context;
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PADDRESS_FILE AddrFile = (PADDRESS_FILE)Context->TdiRequest.Handle.AddressHandle;
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ClearReceiveHandler(AddrFile);
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IoQueueWorkItem(Context->FinishWorker, &EndRequestHandler, DelayedWorkQueue, _Context);
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}
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NTSTATUS
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DispEchoRequest(
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_In_ PDEVICE_OBJECT DeviceObject,
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_In_ PIRP Irp,
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_In_ PIO_STACK_LOCATION IrpSp)
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{
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PICMP_ECHO_REQUEST Request = Irp->AssociatedIrp.SystemBuffer;
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UINT32 OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
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UINT32 InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
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NTSTATUS Status;
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TDI_CONNECTION_INFORMATION ConnectionInfo;
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TA_IP_ADDRESS RemoteAddressTa, LocalAddressTa;
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PADDRESS_FILE AddrFile;
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ULONG DataUsed;
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PUCHAR Buffer;
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UINT16 RequestSize;
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PICMP_PACKET_CONTEXT SendContext;
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KIRQL OldIrql;
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LARGE_INTEGER RequestTimeout;
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UINT8 SavedTtl;
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TI_DbgPrint(DEBUG_ICMP, ("About to send datagram, OutputBufferLength: %u, SystemBuffer: %p\n", OutputBufferLength, Irp->AssociatedIrp.SystemBuffer));
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// check buffers
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if (OutputBufferLength < sizeof(ICMP_ECHO_REPLY) || InputBufferLength < sizeof(ICMP_ECHO_REQUEST))
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{
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return STATUS_INVALID_PARAMETER;
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}
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// check request parameters
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if ((Request->DataSize > UINT16_MAX - sizeof(ICMP_HEADER) - sizeof(IPv4_HEADER)) ||
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((UINT32)Request->DataOffset + Request->DataSize > InputBufferLength) ||
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((UINT32)Request->OptionsOffset + Request->OptionsSize > InputBufferLength))
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{
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return STATUS_INVALID_PARAMETER;
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}
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SendContext = ExAllocatePoolWithTag(NonPagedPool, sizeof(*SendContext), OUT_DATA_TAG);
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if (!SendContext)
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{
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return STATUS_INSUFFICIENT_RESOURCES;
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}
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RtlZeroMemory(&SendContext->TdiRequest, sizeof(SendContext->TdiRequest));
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SendContext->TdiRequest.RequestContext = Irp;
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// setting up everything needed for sending the packet
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RtlZeroMemory(&RemoteAddressTa, sizeof(RemoteAddressTa));
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RtlZeroMemory(&LocalAddressTa, sizeof(LocalAddressTa));
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RtlZeroMemory(&ConnectionInfo, sizeof(ConnectionInfo));
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RemoteAddressTa.TAAddressCount = 1;
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RemoteAddressTa.Address[0].AddressLength = TDI_ADDRESS_LENGTH_IP;
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RemoteAddressTa.Address[0].AddressType = TDI_ADDRESS_TYPE_IP;
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RemoteAddressTa.Address[0].Address[0].in_addr = Request->Address;
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LocalAddressTa.TAAddressCount = 1;
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LocalAddressTa.Address[0].AddressLength = TDI_ADDRESS_LENGTH_IP;
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LocalAddressTa.Address[0].AddressType = TDI_ADDRESS_TYPE_IP;
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LocalAddressTa.Address[0].Address[0].in_addr = 0;
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Status = FileOpenAddress(&SendContext->TdiRequest, &LocalAddressTa, IPPROTO_ICMP, FALSE, NULL);
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if (!NT_SUCCESS(Status))
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{
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TI_DbgPrint(DEBUG_ICMP, ("Failed to open address file status: 0x%x\n", Status));
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ExFreePoolWithTag(SendContext, OUT_DATA_TAG);
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return Status;
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}
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AddrFile = (PADDRESS_FILE)SendContext->TdiRequest.Handle.AddressHandle;
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// setting up the context
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KeQueryPerformanceCounter(&SendContext->TimerResolution);
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SendContext->Irp = Irp;
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SendContext->CurrentReply = Irp->AssociatedIrp.SystemBuffer;
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SendContext->RemainingSize = OutputBufferLength;
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SendContext->nReplies = 0;
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SendContext->FinishWorker = IoAllocateWorkItem(DeviceObject);
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KeInitializeEvent(&SendContext->InitializationFinishedEvent, NotificationEvent, FALSE);
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KeInitializeEvent(&SendContext->DatagramProcessedEvent, NotificationEvent, TRUE);
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KeInitializeDpc(&SendContext->TimeoutDpc, &TimeoutHandler, SendContext);
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KeInitializeTimerEx(&SendContext->TimeoutTimer, SynchronizationTimer);
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RequestTimeout.QuadPart = (-1LL) * 10 * 1000 * Request->Timeout;
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|
||||
ConnectionInfo.RemoteAddress = &RemoteAddressTa;
|
||||
ConnectionInfo.RemoteAddressLength = sizeof(RemoteAddressTa);
|
||||
|
||||
RequestSize = sizeof(ICMP_HEADER) + Request->DataSize;
|
||||
|
||||
// making up the request packet
|
||||
Buffer = ExAllocatePoolWithTag(NonPagedPool, RequestSize, OUT_DATA_TAG);
|
||||
|
||||
if (!Buffer)
|
||||
{
|
||||
ExFreePoolWithTag(SendContext, OUT_DATA_TAG);
|
||||
|
||||
return STATUS_INSUFFICIENT_RESOURCES;
|
||||
}
|
||||
|
||||
((PICMP_HEADER)Buffer)->Type = ICMP_TYPE_ECHO_REQUEST;
|
||||
((PICMP_HEADER)Buffer)->Code = ICMP_TYPE_ECHO_REPLY;
|
||||
((PICMP_HEADER)Buffer)->Checksum = 0;
|
||||
((PICMP_HEADER)Buffer)->Identifier = (UINT_PTR)PsGetCurrentProcessId() & UINT16_MAX;
|
||||
((PICMP_HEADER)Buffer)->Seq = InterlockedIncrement16(&IcmpSequence);
|
||||
memcpy(Buffer + sizeof(ICMP_HEADER), (PUCHAR)Request + Request->DataOffset, Request->DataSize);
|
||||
((PICMP_HEADER)Buffer)->Checksum = IPv4Checksum(Buffer, RequestSize, 0);
|
||||
SavedTtl = Request->Ttl;
|
||||
|
||||
RtlZeroMemory(Irp->AssociatedIrp.SystemBuffer, OutputBufferLength);
|
||||
|
||||
LockObject(AddrFile, &OldIrql);
|
||||
|
||||
AddrFile->TTL = SavedTtl;
|
||||
AddrFile->ReceiveDatagramHandlerContext = SendContext;
|
||||
AddrFile->ReceiveDatagramHandler = ReceiveDatagram;
|
||||
AddrFile->RegisteredReceiveDatagramHandler = TRUE;
|
||||
|
||||
UnlockObject(AddrFile, OldIrql);
|
||||
|
||||
Status = AddrFile->Send(AddrFile, &ConnectionInfo, (PCHAR)Buffer, RequestSize, &DataUsed);
|
||||
|
||||
// From this point we may receive a reply packet.
|
||||
// But we are not ready for it thus InitializationFinishedEvent is needed (see below)
|
||||
|
||||
SendContext->StartTicks = KeQueryPerformanceCounter(NULL).QuadPart;
|
||||
|
||||
ExFreePoolWithTag(Buffer, OUT_DATA_TAG);
|
||||
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
NTSTATUS _Status;
|
||||
|
||||
ClearReceiveHandler(AddrFile);
|
||||
_Status = FileCloseAddress(&SendContext->TdiRequest);
|
||||
ASSERT(NT_SUCCESS(_Status));
|
||||
|
||||
IoFreeWorkItem(SendContext->FinishWorker);
|
||||
ExFreePoolWithTag(SendContext, OUT_DATA_TAG);
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Failed to send a datagram: 0x%x\n", Status));
|
||||
return Status;
|
||||
}
|
||||
|
||||
IoMarkIrpPending(Irp);
|
||||
KeSetTimer(&SendContext->TimeoutTimer, RequestTimeout, &SendContext->TimeoutDpc);
|
||||
KeSetEvent(&SendContext->InitializationFinishedEvent, IO_NO_INCREMENT, FALSE);
|
||||
|
||||
return STATUS_PENDING;
|
||||
}
|
||||
|
|
@ -475,12 +475,12 @@ TiDispatchInternal(
|
|||
|
||||
/**
|
||||
* @brief Dispatch routine for IRP_MJ_DEVICE_CONTROL requests
|
||||
*
|
||||
*
|
||||
* @param[in] DeviceObject
|
||||
* Pointer to a device object for this driver
|
||||
* @param[in] Irp
|
||||
* Pointer to a I/O request packet
|
||||
*
|
||||
*
|
||||
* @return
|
||||
* Status of the operation
|
||||
*/
|
||||
|
|
@ -538,6 +538,11 @@ TiDispatch(
|
|||
Status = DispTdiQueryIpHwAddress(DeviceObject, Irp, IrpSp);
|
||||
break;
|
||||
|
||||
case IOCTL_ICMP_ECHO_REQUEST:
|
||||
TI_DbgPrint(MIN_TRACE, ("ICMP_ECHO_REQUEST\n"));
|
||||
Status = DispEchoRequest(DeviceObject, Irp, IrpSp);
|
||||
break;
|
||||
|
||||
default:
|
||||
TI_DbgPrint(MIN_TRACE, ("Unknown IOCTL 0x%X\n",
|
||||
IrpSp->Parameters.DeviceIoControl.IoControlCode));
|
||||
|
|
|
|||
|
|
@ -270,7 +270,6 @@ gdi32 -
|
|||
dll/win32/gdi32/objects/linedda.c # Synced at 20090410
|
||||
|
||||
iphlpapi -
|
||||
dll/win32/iphlpapi/icmp.c # Synced to WineStaging-1.7.55
|
||||
modules/rostests/winetests/iphlpapi # Synced to WineStaging-1.9.11
|
||||
|
||||
kernel32 -
|
||||
|
|
|
|||
|
|
@ -26,95 +26,6 @@ NTSTATUS ICMPShutdown()
|
|||
return STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
BOOLEAN PrepareICMPPacket(
|
||||
PADDRESS_FILE AddrFile,
|
||||
PIP_INTERFACE Interface,
|
||||
PIP_PACKET IPPacket,
|
||||
PIP_ADDRESS Destination,
|
||||
PCHAR Data,
|
||||
UINT DataSize)
|
||||
/*
|
||||
* FUNCTION: Prepares an ICMP packet
|
||||
* ARGUMENTS:
|
||||
* NTE = Pointer to net table entry to use
|
||||
* Destination = Pointer to destination address
|
||||
* DataSize = Size of dataarea
|
||||
* RETURNS:
|
||||
* Pointer to IP packet, NULL if there is not enough free resources
|
||||
*/
|
||||
{
|
||||
PNDIS_PACKET NdisPacket;
|
||||
NDIS_STATUS NdisStatus;
|
||||
PIPv4_HEADER IPHeader;
|
||||
ULONG Size;
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Called. DataSize (%d).\n", DataSize));
|
||||
|
||||
IPInitializePacket(IPPacket, IP_ADDRESS_V4);
|
||||
|
||||
/* No special flags */
|
||||
IPPacket->Flags = 0;
|
||||
|
||||
Size = sizeof(IPv4_HEADER) + DataSize;
|
||||
|
||||
/* Allocate NDIS packet */
|
||||
NdisStatus = AllocatePacketWithBuffer( &NdisPacket, NULL, Size );
|
||||
|
||||
if( !NT_SUCCESS(NdisStatus) ) return FALSE;
|
||||
|
||||
IPPacket->NdisPacket = NdisPacket;
|
||||
IPPacket->MappedHeader = TRUE;
|
||||
|
||||
GetDataPtr( IPPacket->NdisPacket, 0,
|
||||
(PCHAR *)&IPPacket->Header, &IPPacket->TotalSize );
|
||||
ASSERT(IPPacket->TotalSize == Size);
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Size (%d). Data at (0x%X).\n", Size, Data));
|
||||
TI_DbgPrint(DEBUG_ICMP, ("NdisPacket at (0x%X).\n", NdisPacket));
|
||||
|
||||
IPPacket->HeaderSize = sizeof(IPv4_HEADER);
|
||||
IPPacket->Data = ((PCHAR)IPPacket->Header) + IPPacket->HeaderSize;
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Copying Address: %x -> %x\n",
|
||||
&IPPacket->DstAddr, Destination));
|
||||
|
||||
RtlCopyMemory(&IPPacket->DstAddr, Destination, sizeof(IP_ADDRESS));
|
||||
RtlCopyMemory(IPPacket->Data, Data, DataSize);
|
||||
|
||||
/* Build IPv4 header. FIXME: IPv4 only */
|
||||
|
||||
IPHeader = (PIPv4_HEADER)IPPacket->Header;
|
||||
|
||||
/* Version = 4, Length = 5 DWORDs */
|
||||
IPHeader->VerIHL = 0x45;
|
||||
/* Normal Type-of-Service */
|
||||
IPHeader->Tos = 0;
|
||||
/* Length of data and header */
|
||||
IPHeader->TotalLength = WH2N((USHORT)DataSize + sizeof(IPv4_HEADER));
|
||||
/* Identification */
|
||||
IPHeader->Id = (USHORT)Random();
|
||||
/* One fragment at offset 0 */
|
||||
IPHeader->FlagsFragOfs = 0;
|
||||
/* Set TTL */
|
||||
if (AddrFile)
|
||||
IPHeader->Ttl = AddrFile->TTL;
|
||||
else
|
||||
IPHeader->Ttl = 128;
|
||||
/* Internet Control Message Protocol */
|
||||
IPHeader->Protocol = IPPROTO_ICMP;
|
||||
/* Checksum is 0 (for later calculation of this) */
|
||||
IPHeader->Checksum = 0;
|
||||
/* Source address */
|
||||
IPHeader->SrcAddr = Interface->Unicast.Address.IPv4Address;
|
||||
/* Destination address */
|
||||
IPHeader->DstAddr = Destination->Address.IPv4Address;
|
||||
|
||||
|
||||
TI_DbgPrint(MID_TRACE,("Leaving\n"));
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
NTSTATUS ICMPSendDatagram(
|
||||
PADDRESS_FILE AddrFile,
|
||||
PTDI_CONNECTION_INFORMATION ConnInfo,
|
||||
|
|
@ -132,79 +43,10 @@ NTSTATUS ICMPSendDatagram(
|
|||
* Status of operation
|
||||
*/
|
||||
{
|
||||
IP_PACKET Packet;
|
||||
PTA_IP_ADDRESS RemoteAddressTa = (PTA_IP_ADDRESS)ConnInfo->RemoteAddress;
|
||||
IP_ADDRESS RemoteAddress, LocalAddress;
|
||||
NTSTATUS Status;
|
||||
PNEIGHBOR_CACHE_ENTRY NCE;
|
||||
KIRQL OldIrql;
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Sending ICMP datagram (0x%x)\n", AddrFile));
|
||||
|
||||
TI_DbgPrint(MID_TRACE,("Sending Datagram(%x %x %x %d)\n",
|
||||
AddrFile, ConnInfo, BufferData, DataSize));
|
||||
TI_DbgPrint(MID_TRACE,("RemoteAddressTa: %x\n", RemoteAddressTa));
|
||||
|
||||
switch( RemoteAddressTa->Address[0].AddressType ) {
|
||||
case TDI_ADDRESS_TYPE_IP:
|
||||
RemoteAddress.Type = IP_ADDRESS_V4;
|
||||
RemoteAddress.Address.IPv4Address =
|
||||
RemoteAddressTa->Address[0].Address[0].in_addr;
|
||||
break;
|
||||
|
||||
default:
|
||||
return STATUS_UNSUCCESSFUL;
|
||||
}
|
||||
|
||||
TI_DbgPrint(MID_TRACE,("About to get route to destination\n"));
|
||||
|
||||
LockObject(AddrFile, &OldIrql);
|
||||
|
||||
LocalAddress = AddrFile->Address;
|
||||
if (AddrIsUnspecified(&LocalAddress))
|
||||
{
|
||||
/* If the local address is unspecified (0),
|
||||
* then use the unicast address of the
|
||||
* interface we're sending over
|
||||
*/
|
||||
if(!(NCE = RouteGetRouteToDestination( &RemoteAddress )))
|
||||
{
|
||||
UnlockObject(AddrFile, OldIrql);
|
||||
return STATUS_NETWORK_UNREACHABLE;
|
||||
}
|
||||
|
||||
LocalAddress = NCE->Interface->Unicast;
|
||||
}
|
||||
else
|
||||
{
|
||||
if(!(NCE = NBLocateNeighbor( &LocalAddress, NULL )))
|
||||
{
|
||||
UnlockObject(AddrFile, OldIrql);
|
||||
return STATUS_INVALID_PARAMETER;
|
||||
}
|
||||
}
|
||||
|
||||
Status = PrepareICMPPacket( AddrFile,
|
||||
NCE->Interface,
|
||||
&Packet,
|
||||
&RemoteAddress,
|
||||
BufferData,
|
||||
DataSize );
|
||||
|
||||
UnlockObject(AddrFile, OldIrql);
|
||||
|
||||
if( !NT_SUCCESS(Status) )
|
||||
return Status;
|
||||
|
||||
TI_DbgPrint(MID_TRACE,("About to send datagram\n"));
|
||||
|
||||
Status = IPSendDatagram(&Packet, NCE);
|
||||
if (!NT_SUCCESS(Status))
|
||||
return Status;
|
||||
|
||||
*DataUsed = DataSize;
|
||||
|
||||
TI_DbgPrint(MID_TRACE,("Leaving\n"));
|
||||
|
||||
return STATUS_SUCCESS;
|
||||
/* just forward the call to RawIP handler */
|
||||
return RawIPSendDatagram(AddrFile, ConnInfo, BufferData, DataSize, DataUsed);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -218,81 +60,34 @@ VOID ICMPReceive(
|
|||
* IPPacket = Pointer to an IP packet that was received
|
||||
*/
|
||||
{
|
||||
PICMP_HEADER ICMPHeader;
|
||||
PICMP_HEADER ICMPHeader = (PICMP_HEADER)IPPacket->Data;
|
||||
UINT32 DataSize = IPPacket->TotalSize - IPPacket->HeaderSize;
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Called.\n"));
|
||||
TI_DbgPrint(DEBUG_ICMP, ("ICMPReceive: Size (%d) HeaderSize (%d) Type (%d) Code (%d) Checksum (0x%x)\n",
|
||||
IPPacket->TotalSize, IPPacket->HeaderSize, ICMPHeader->Type, ICMPHeader->Code, ICMPHeader->Checksum));
|
||||
|
||||
ICMPHeader = (PICMP_HEADER)IPPacket->Data;
|
||||
/* Discard too short packets */
|
||||
if (DataSize < sizeof(ICMP_HEADER))
|
||||
{
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Packet doesn't fit ICMP header. Discarded\n"));
|
||||
return;
|
||||
}
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Size (%d).\n", IPPacket->TotalSize));
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("HeaderSize (%d).\n", IPPacket->HeaderSize));
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Type (%d).\n", ICMPHeader->Type));
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Code (%d).\n", ICMPHeader->Code));
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Checksum (0x%X).\n", ICMPHeader->Checksum));
|
||||
|
||||
/* Checksum ICMP header and data */
|
||||
if (!IPv4CorrectChecksum(IPPacket->Data, IPPacket->TotalSize - IPPacket->HeaderSize)) {
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Bad ICMP checksum.\n"));
|
||||
/* Discard packet */
|
||||
/* Discard packets with bad checksum */
|
||||
if (!IPv4CorrectChecksum(IPPacket->Data, DataSize))
|
||||
{
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Bad ICMP checksum. Packet discarded\n"));
|
||||
return;
|
||||
}
|
||||
|
||||
RawIpReceive(Interface, IPPacket);
|
||||
|
||||
switch (ICMPHeader->Type) {
|
||||
case ICMP_TYPE_ECHO_REQUEST:
|
||||
ICMPReply( Interface, IPPacket, ICMP_TYPE_ECHO_REPLY, 0 );
|
||||
break;
|
||||
|
||||
case ICMP_TYPE_ECHO_REPLY:
|
||||
break;
|
||||
|
||||
default:
|
||||
TI_DbgPrint(DEBUG_ICMP,
|
||||
("Discarded ICMP datagram of unknown type %d.\n",
|
||||
ICMPHeader->Type));
|
||||
/* Discard packet */
|
||||
break;
|
||||
if (ICMPHeader->Type == ICMP_TYPE_ECHO_REQUEST)
|
||||
{
|
||||
ICMPReply(Interface, IPPacket, ICMP_TYPE_ECHO_REPLY, 0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
VOID ICMPTransmit(
|
||||
PIP_PACKET IPPacket,
|
||||
PIP_TRANSMIT_COMPLETE Complete,
|
||||
PVOID Context)
|
||||
/*
|
||||
* FUNCTION: Transmits an ICMP packet
|
||||
* ARGUMENTS:
|
||||
* NTE = Pointer to net table entry to use (NULL if don't care)
|
||||
* IPPacket = Pointer to IP packet to transmit
|
||||
*/
|
||||
{
|
||||
PNEIGHBOR_CACHE_ENTRY NCE;
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Called.\n"));
|
||||
|
||||
/* Calculate checksum of ICMP header and data */
|
||||
((PICMP_HEADER)IPPacket->Data)->Checksum = (USHORT)
|
||||
IPv4Checksum(IPPacket->Data, IPPacket->TotalSize - IPPacket->HeaderSize, 0);
|
||||
|
||||
/* Get a route to the destination address */
|
||||
if ((NCE = RouteGetRouteToDestination(&IPPacket->DstAddr))) {
|
||||
/* Send the packet */
|
||||
IPSendDatagram(IPPacket, NCE);
|
||||
} else {
|
||||
/* No route to destination (or no free resources) */
|
||||
TI_DbgPrint(DEBUG_ICMP, ("No route to destination address 0x%X.\n",
|
||||
IPPacket->DstAddr.Address.IPv4Address));
|
||||
IPPacket->Free(IPPacket);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
VOID ICMPReply(
|
||||
PIP_INTERFACE Interface,
|
||||
PIP_PACKET IPPacket,
|
||||
|
|
@ -314,19 +109,36 @@ VOID ICMPReply(
|
|||
{
|
||||
UINT DataSize;
|
||||
IP_PACKET NewPacket;
|
||||
ADDRESS_FILE FakeAddrFile;
|
||||
PNEIGHBOR_CACHE_ENTRY NCE;
|
||||
|
||||
TI_DbgPrint(DEBUG_ICMP, ("Called. Type (%d) Code (%d).\n", Type, Code));
|
||||
|
||||
DataSize = IPPacket->TotalSize - IPPacket->HeaderSize;
|
||||
|
||||
if( !PrepareICMPPacket(NULL, Interface, &NewPacket, &IPPacket->SrcAddr,
|
||||
IPPacket->Data, DataSize) ) return;
|
||||
/* First check if we have a route to sender */
|
||||
NCE = RouteGetRouteToDestination(&IPPacket->SrcAddr);
|
||||
if (!NCE)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
/* This is the only data needed to generate a packet */
|
||||
FakeAddrFile.Protocol = IPPROTO_ICMP;
|
||||
FakeAddrFile.TTL = 128;
|
||||
|
||||
if (!NT_SUCCESS(BuildRawIpPacket(
|
||||
&FakeAddrFile, &NewPacket, &IPPacket->SrcAddr, 0, &Interface->Unicast, 0, IPPacket->Data, DataSize)))
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
((PICMP_HEADER)NewPacket.Data)->Type = Type;
|
||||
((PICMP_HEADER)NewPacket.Data)->Code = Code;
|
||||
((PICMP_HEADER)NewPacket.Data)->Checksum = 0;
|
||||
((PICMP_HEADER)NewPacket.Data)->Checksum = (USHORT)IPv4Checksum(NewPacket.Data, DataSize, 0);
|
||||
|
||||
ICMPTransmit(&NewPacket, NULL, NULL);
|
||||
IPSendDatagram(&NewPacket, NCE);
|
||||
}
|
||||
|
||||
/* EOF */
|
||||
|
|
|
|||
|
|
@ -46,7 +46,7 @@ NTSTATUS AddGenericHeaderIPv4(
|
|||
&IPPacket->TotalSize );
|
||||
IPPacket->MappedHeader = TRUE;
|
||||
|
||||
IPPacket->HeaderSize = 20;
|
||||
IPPacket->HeaderSize = sizeof(IPv4_HEADER);
|
||||
|
||||
TI_DbgPrint(MAX_TRACE, ("Allocated %d bytes for headers at 0x%X.\n",
|
||||
BufferSize, IPPacket->Header));
|
||||
|
|
|
|||
Loading…
Reference in a new issue