102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
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//============================================================================
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// Copyright (c) 1995, Microsoft Corporation
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//
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// File: defs.h
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//
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// History:
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// Abolade Gbadegesin September 8, 1995 Created
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//
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// Contains miscellaneous declarations and definitions
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//============================================================================
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#ifndef _DEFS_H_
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#define _DEFS_H_
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//----------------------------------------------------------------------------
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// TYPE DEFINITIONS FOR IPBOOTP NETWORK PACKET TEMPLATES
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//
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// constants defining maximum lengths for array fields
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//
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#define MAX_MACADDR_LENGTH 16
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#define MAX_HOSTNAME_LENGTH 64
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#define MAX_BOOTFILENAME_LENGTH 128
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#include <pshpack1.h>
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// the structure of the BOOTP packet, as defined by RFC 1542;
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// the option field which appears at the end of each packet
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// is excluded since the relay agent does no options-processing
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//
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typedef struct _IPBOOTP_PACKET {
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BYTE IP_Operation;
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BYTE IP_MacAddrType;
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BYTE IP_MacAddrLength;
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BYTE IP_HopCount;
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DWORD IP_TransactionID;
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WORD IP_SecondsSinceBoot;
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WORD IP_Flags;
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DWORD IP_ClientAddress;
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DWORD IP_OfferedAddress;
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DWORD IP_ServerAddress;
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DWORD IP_AgentAddress;
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BYTE IP_MacAddr[16];
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BYTE IP_HostName[64];
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BYTE IP_BootFileName[128];
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} IPBOOTP_PACKET, *PIPBOOTP_PACKET;
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typedef struct _DHCP_PACKET {
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UCHAR Cookie[4];
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UCHAR Tag;
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UCHAR Length;
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UCHAR Option[];
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} DHCP_PACKET, *PDHCP_PACKET;
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#include <poppack.h>
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// constants for the IBP_Operation field
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//
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#define IPBOOTP_OPERATION_REQUEST 1
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#define IPBOOTP_OPERATION_REPLY 2
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//
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#define IPBOOTP_MAX_HOP_COUNT 16
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// constants for the IBP_Flags field
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//
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#define IPBOOTP_FLAG_BROADCAST 0x8000
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// constants for the DHCP portion of the packet
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//
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#define DHCP_MAGIC_COOKIE ((99 << 24) | (83 << 16) | (130 << 8) | (99))
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#define DHCP_TAG_MESSAGE_TYPE 53
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#define DHCP_MESSAGE_INFORM 8
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// structure size constants
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//
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#define MIN_PACKET_SIZE (sizeof(IPBOOTP_PACKET) + 64)
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#define MAX_PACKET_SIZE 576
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// INET constants
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//
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#define IPBOOTP_SERVER_PORT 67
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#define IPBOOTP_CLIENT_PORT 68
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// This macro compares two IP addresses in network order by
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// masking off each pair of octets and doing a subtraction;
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// the result of the final subtraction is stored in the third argument
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//
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#define INET_CMP(a,b,c) \
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(((c) = (((a) & 0x000000ff) - ((b) & 0x000000ff))) ? (c) : \
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(((c) = (((a) & 0x0000ff00) - ((b) & 0x0000ff00))) ? (c) : \
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(((c) = (((a) & 0x00ff0000) - ((b) & 0x00ff0000))) ? (c) : \
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(((c) = (((a) & 0xff000000) - ((b) & 0xff000000))) ? (c) : (c)))))
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#endif // _DEFS_H_
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