mirror of
https://github.com/reactos/reactos.git
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89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS TCP/IP protocol driver
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* FILE: tcpip/routines.c
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* PURPOSE: Common routines
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* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* REVISIONS:
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* CSH 01/08-2000 Created
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*/
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#include "precomp.h"
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static UINT RandomNumber = 0x12345678;
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UINT Random(
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VOID)
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/*
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* FUNCTION: Returns a pseudo random number
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* RETURNS:
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* Pseudo random number
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*/
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{
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RandomNumber ^= 0x78563412;
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return RandomNumber;
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}
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#if DBG
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static VOID DisplayIPHeader(
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PCHAR Header,
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UINT Length)
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{
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/* FIXME: IPv4 only */
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PIPv4_HEADER IPHeader = (PIPv4_HEADER)Header;
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DbgPrint("IPv4 header:\n");
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DbgPrint("VerIHL: 0x%x (version 0x%x, length %d 32-bit words)\n",
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IPHeader->VerIHL, (IPHeader->VerIHL & 0xF0) >> 4, IPHeader->VerIHL & 0x0F);
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DbgPrint(" Tos: %d\n", IPHeader->Tos);
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DbgPrint(" TotalLength: %d\n", WN2H(IPHeader->TotalLength));
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DbgPrint(" Id: %d\n", WN2H(IPHeader->Id));
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DbgPrint(" FlagsFragOfs: 0x%x (offset 0x%x)\n", WN2H(IPHeader->FlagsFragOfs), WN2H(IPHeader->FlagsFragOfs) & IPv4_FRAGOFS_MASK);
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if ((WN2H(IPHeader->FlagsFragOfs) & IPv4_DF_MASK) > 0) DbgPrint(" IPv4_DF - Don't fragment\n");
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if ((WN2H(IPHeader->FlagsFragOfs) & IPv4_MF_MASK) > 0) DbgPrint(" IPv4_MF - More fragments\n");
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DbgPrint(" Ttl: %d\n", IPHeader->Ttl);
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DbgPrint(" Protocol: %d\n", IPHeader->Protocol);
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DbgPrint(" Checksum: 0x%x\n", WN2H(IPHeader->Checksum));
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DbgPrint(" SrcAddr: %d.%d.%d.%d\n",
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((IPHeader->SrcAddr >> 0) & 0xFF), ((IPHeader->SrcAddr >> 8) & 0xFF),
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((IPHeader->SrcAddr >> 16) & 0xFF), ((IPHeader->SrcAddr >> 24) & 0xFF));
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DbgPrint(" DstAddr: %d.%d.%d.%d\n",
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((IPHeader->DstAddr >> 0) & 0xFF), ((IPHeader->DstAddr >> 8) & 0xFF),
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((IPHeader->DstAddr >> 16) & 0xFF), ((IPHeader->DstAddr >> 24) & 0xFF));
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}
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#endif
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VOID DisplayIPPacket(
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PIP_PACKET IPPacket)
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{
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#if DBG
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UINT Length;
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PCHAR CharBuffer;
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/* DbgQueryDebugFilterState returns (NTSTATUS)TRUE, (NTSTATUS)FALSE or a failure status code */
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if ((DbgQueryDebugFilterState(DPFLTR_TCPIP_ID, DEBUG_PBUFFER | DPFLTR_MASK) != (NTSTATUS)TRUE) ||
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(DbgQueryDebugFilterState(DPFLTR_TCPIP_ID, DEBUG_IP | DPFLTR_MASK) != (NTSTATUS)TRUE)) {
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return;
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}
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if (!IPPacket) {
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TI_DbgPrint(MIN_TRACE, ("Cannot display null packet.\n"));
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return;
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}
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TI_DbgPrint(MIN_TRACE, ("IPPacket is at (0x%X).\n", IPPacket));
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TI_DbgPrint(MIN_TRACE, ("Header buffer is at (0x%X).\n", IPPacket->Header));
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TI_DbgPrint(MIN_TRACE, ("Header size is (%d).\n", IPPacket->HeaderSize));
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TI_DbgPrint(MIN_TRACE, ("TotalSize (%d).\n", IPPacket->TotalSize));
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TI_DbgPrint(MIN_TRACE, ("NdisPacket (0x%X).\n", IPPacket->NdisPacket));
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CharBuffer = IPPacket->Header;
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Length = IPPacket->HeaderSize;
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DisplayIPHeader(CharBuffer, Length);
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#endif
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}
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