www.pudn.com > snmp.rar > vb.c

/*++ 
 
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  
#include  
 
 
/////////////////////////////////////////////////////////////////////////////// 
//                                                                           // 
// 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); 
    } 
}