windows-nt/Source/XPSP1/NT/net/snmp/common/dll/vb.c
2020-09-26 16:20:57 +08:00

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/*++
Copyright (c) 1992-1997 Microsoft Corporation
Module Name:
vb.c
Abstract:
Contains routines to manipulate variable bindings.
SnmpUtilVarBindCpy
SnmpUtilVarBindFree
Environment:
User Mode - Win32
Revision History:
--*/
///////////////////////////////////////////////////////////////////////////////
// //
// Include files //
// //
///////////////////////////////////////////////////////////////////////////////
#include <snmp.h>
#include <snmputil.h>
///////////////////////////////////////////////////////////////////////////////
// //
// Public Procedures //
// //
///////////////////////////////////////////////////////////////////////////////
SNMPAPI
SNMP_FUNC_TYPE
SnmpUtilVarBindCpy(
SnmpVarBind * pVbDst,
SnmpVarBind * pVbSrc
)
/*++
Routine Description:
Copies a variable binding.
Arguments:
pVbDst - pointer to structure to receive VarBind.
pVbSrc - pointer to VarBind to copy.
Return Values:
Returns SNMPAPI_NOERROR if successful.
--*/
{
SNMPAPI nResult = SNMPAPI_ERROR;
// validate pointer
if (pVbDst != NULL) {
// initialize destination
pVbDst->value.asnType = ASN_NULL;
// validate pointer
if (pVbSrc != NULL) {
// copy the variable's name from source to destination
nResult = SnmpUtilOidCpy(&pVbDst->name, &pVbSrc->name);
// validate return code
if (nResult == SNMPAPI_NOERROR) {
// copy the variable's value from source to destination
nResult = SnmpUtilAsnAnyCpy(&pVbDst->value, &pVbSrc->value);
}
} else {
SNMPDBG((
SNMP_LOG_WARNING,
"SNMP: API: copying null varbind.\n"
));
nResult = SNMPAPI_NOERROR; // success..,
}
} else {
SNMPDBG((
SNMP_LOG_ERROR,
"SNMP: API: null varbind pointer.\n"
));
SetLastError(ERROR_INVALID_PARAMETER);
}
// validate return code
if (nResult == SNMPAPI_ERROR) {
// release new variable
SnmpUtilVarBindFree(pVbDst);
}
return nResult;
}
VOID
SNMP_FUNC_TYPE
SnmpUtilVarBindFree(
SnmpVarBind * pVb
)
/*++
Routine Description:
Releases memory associated with variable binding.
Arguments:
pVb - pointer to VarBind to release.
Return Values:
None.
--*/
{
// validate
if (pVb != NULL) {
// release variable name
SnmpUtilOidFree(&pVb->name);
// release variable value
SnmpUtilAsnAnyFree(&pVb->value);
}
}