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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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vc98
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include
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oid.h
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C/C++ Source or Header
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1998-04-25
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//==========================================================================================================================
// MODULE: OID.h
//
// Description:
//
// Bloodhound Kernel, OID utilities (SNMP)
//
// Modification History
//
// Keith Lau 01/09/95 Created
//==========================================================================================================================
#ifndef OID_H
#define OID_H
#include <windows.h>
#include <string.h>
#include <bh.h>
// class field of BER tag
#define ASN_UNIVERSAL 0x00
#define ASN_APPLICATION 0x40
#define ASN_CONTEXTSPECIFIC 0x80
#define ASN_PRIVATE 0xC0
// primative/constructed field of BER tag
#define ASN_PRIMATIVE 0x00
#define ASN_CONSTRUCTOR 0x20
// Priviliged message
#define ASN_RFCxxxx_PRIVDATA (ASN_CONTEXTSPECIFIC | ASN_PRIMATIVE | 0x01)
#define ASN_RFCxxxx_SNMPMGMTCOM (ASN_CONTEXTSPECIFIC | ASN_CONSTRUCTOR | 0x01)
#define ASN_RFCxxxx_SNMPAUTHMSG (ASN_CONTEXTSPECIFIC | ASN_CONSTRUCTOR | 0x01)
#define ASN_RFCxxxx_SNMPPRIVMSG (ASN_CONTEXTSPECIFIC | ASN_CONSTRUCTOR | 0x01)
// ASN.1 simple types
#define ASN_INTEGER (ASN_UNIVERSAL | ASN_PRIMATIVE | 0x02)
#define ASN_OCTETSTRING (ASN_UNIVERSAL | ASN_PRIMATIVE | 0x04)
#define ASN_NULL (ASN_UNIVERSAL | ASN_PRIMATIVE | 0x05)
#define ASN_OBJECTIDENTIFIER (ASN_UNIVERSAL | ASN_PRIMATIVE | 0x06)
// ASN.1 constructor types
#define ASN_SEQUENCE (ASN_UNIVERSAL | ASN_CONSTRUCTOR | 0x10)
#define ASN_SEQUENCEOF ASN_SEQUENCE
// ASN.1 application specific primatives
#define ASN_RFC1155_IPADDRESS (ASN_APPLICATION | ASN_PRIMATIVE | 0x00)
#define ASN_RFC1155_COUNTER (ASN_APPLICATION | ASN_PRIMATIVE | 0x01)
#define ASN_RFC1155_GAUGE (ASN_APPLICATION | ASN_PRIMATIVE | 0x02)
#define ASN_RFC1155_TIMETICKS (ASN_APPLICATION | ASN_PRIMATIVE | 0x03)
#define ASN_RFC1155_OPAQUE (ASN_APPLICATION | ASN_PRIMATIVE | 0x04)
#define ASN_RFC1213_DISPSTRING ASN_OCTETSTRING
// BER limits
#define BER_OCTET_LEN 8 // 8 bits in an octet
#define BER_OCTET_SIZE 256 // 8 bits make an octet
#define BER_MAX_INT_OCTETS 4 // 4 octets - 32 bit integer
#define BER_MAX_LEN_OCTETS 2 // 2 octets - 16 bit integer length
#define BER_MAX_STREAM_LEN 0xffff // 16 bit unsigned integer
#define BER_MIN_HEADER_LEN 2 // 2 octets
#define BER_MAX_SIMPLE_LEN 127 // SNMP BER definition
// Buffer offsets for info.
#define BER_TAG_OFFSET 0
#define BER_LENGTH_OFFSET 1
// Meaningful bit definitions
#define BER_EXTENDED_TAG 0x1f // 00011111
#define BER_OCTET_CONT_BIT 0x80 // 10000000
// BER OBJECTIDENTIFIER limits
#define BER_MAX_FIRST_ELEM 2 // Obj Id's 1st element must be 0-2
#define BER_MAX_SECOND_ELEM 39 // Obj Id's 2nd element must be 0-40
// These are defined solely for Object Identifier (OID) filter contains actions
#define OID_BEGINS_WITH 1
#define OID_ENDS_WITH 2
#define OID_CONTAINS (OID_BEGINS_WITH | OID_ENDS_WITH)
// Function prototypes
DWORD WINAPI DecodeSNMPObjectIdentifier( LPBYTE lpData,
DWORD DataLen,
LPOBJECT_IDENTIFIER lpOID);
VOID WINAPI EncodeSNMPObjectIdentifier( LPBYTE lpData,
LPDWORD lpDataLen,
LPOBJECT_IDENTIFIER lpOID);
BOOL WINAPI IsValidSNMPObjectIdentifier(LPOBJECT_IDENTIFIER lpOID);
BOOL WINAPI ObjectIdentifierContains (LPBYTE SubOID,
WORD SubOIDLen,
LPBYTE OID,
WORD OIDLen,
DWORD ContainFlags);
#endif