/*_############################################################################
  _## 
  _##  SNMP4J-Agent 3 - SnmpTagValue.java  
  _## 
  _##  Copyright (C) 2005-2025  Frank Fock (SNMP4J.org)
  _##  
  _##  Licensed under the Apache License, Version 2.0 (the "License");
  _##  you may not use this file except in compliance with the License.
  _##  You may obtain a copy of the License at
  _##  
  _##      http://www.apache.org/licenses/LICENSE-2.0
  _##  
  _##  Unless required by applicable law or agreed to in writing, software
  _##  distributed under the License is distributed on an "AS IS" BASIS,
  _##  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  _##  See the License for the specific language governing permissions and
  _##  limitations under the License.
  _##  
  _##########################################################################*/


package org.snmp4j.agent.mo.snmp;

import org.snmp4j.agent.MOAccess;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.SMIConstants;
import org.snmp4j.agent.mo.MOMutableColumn;
import org.snmp4j.smi.Variable;
import org.snmp4j.smi.OctetString;
import org.snmp4j.mp.SnmpConstants;

public class SnmpTagValue extends MOMutableColumn<OctetString> {

    public SnmpTagValue(int columnID, MOAccess access, OctetString defaultValue) {
        super(columnID, SMIConstants.SYNTAX_OCTET_STRING, access, defaultValue);
    }

    public SnmpTagValue(int columnID, MOAccess access,
                        OctetString defaultValue, boolean mutableInService) {
        super(columnID, SMIConstants.SYNTAX_OCTET_STRING, access, defaultValue, mutableInService);
    }

    public static boolean isDelimiter(byte b) {
        return ((b == 32) || (b == 9) || (b == 13) || (b == 11));
    }

    public synchronized int validate(OctetString newValue, OctetString oldValue, OID instanceOID) {
        int status = super.validate(newValue, oldValue, instanceOID);
        if (status == SnmpConstants.SNMP_ERROR_SUCCESS) {
            status = isValidTagValue(newValue);
        }
        return status;
    }

    public static int isValidTagValue(Variable newValue) {
        if (!(newValue instanceof OctetString)) {
            return SnmpConstants.SNMP_ERROR_WRONG_TYPE;
        }
        int status = SnmpConstants.SNMP_ERROR_SUCCESS;
        OctetString os = (OctetString) newValue;
        if (os.length() > 255) {
            status = SnmpConstants.SNMP_ERROR_WRONG_LENGTH;
        } else {
            for (int i = 0; i < os.length(); i++) {
                if (isDelimiter(os.get(i))) {
                    status = SnmpConstants.SNMP_ERROR_BAD_VALUE;
                    break;
                }
            }
        }
        return status;
    }

}
