69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 1998, Microsoft Corp. All rights reserved.
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//
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// FILE
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//
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// snmpoid.cpp
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//
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// SYNOPSIS
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//
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// Defines the class SnmpOid.
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//
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// MODIFICATION HISTORY
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//
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// 09/10/1998 Original version.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <ias.h>
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#include <snmpoid.h>
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SnmpOid& SnmpOid::operator=(const AsnObjectIdentifier& a)
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{
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// Note: self-assignment is benign, so we don't bother to check.
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resize(a.idLength);
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memcpy(oid.ids, a.ids, length() * sizeof(UINT));
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return *this;
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}
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bool SnmpOid::isChildOf(const AsnObjectIdentifier& parent) const throw ()
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{
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if (length() < parent.idLength)
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{
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return false;
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}
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return SnmpUtilOidNCmp(
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*this,
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const_cast<AsnObjectIdentifier*>(&parent),
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parent.idLength
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) == 0;
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}
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void SnmpOid::resize(UINT newLength)
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{
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if (newLength <= length())
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{
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// Truncation is easy.
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oid.idLength = newLength;
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}
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else
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{
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// Try to extend our buffer.
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PVOID p = SnmpUtilMemReAlloc(oid.ids, newLength * sizeof(UINT));
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if (p == NULL) { throw (AsnInteger32)SNMP_MEM_ALLOC_ERROR; }
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// Swap in the extended buffer.
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oid.ids = (UINT*)p;
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// Zero out the added ID's.
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memset(oid.ids + length(), 0, (newLength - length()) * sizeof(UINT));
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// Update our length.
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oid.idLength = newLength;
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}
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}
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