/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.component.snmp;
import java.util.StringTokenizer;
import org.apache.camel.Converter;
import org.apache.camel.Exchange;
import org.snmp4j.PDU;
import org.snmp4j.PDUv1;
import org.snmp4j.smi.OID;
import org.snmp4j.smi.VariableBinding;
@Converter
public final class SnmpConverters {
public static final String SNMP_TAG = "snmp";
public static final String ENTRY_TAG = "entry";
public static final String OID_TAG = "oid";
public static final String VALUE_TAG = "value";
private static final String SNMP_TAG_OPEN = '<' + SNMP_TAG + '>';
private static final String SNMP_TAG_CLOSE = "</" + SNMP_TAG + '>';
private static final String ENTRY_TAG_OPEN = '<' + ENTRY_TAG + '>';
private static final String ENTRY_TAG_CLOSE = "</" + ENTRY_TAG + '>';
private static final String OID_TAG_OPEN = '<' + OID_TAG + '>';
private static final String OID_TAG_CLOSE = "</" + OID_TAG + '>';
private static final String VALUE_TAG_OPEN = '<' + VALUE_TAG + '>';
private static final String VALUE_TAG_CLOSE = "</" + VALUE_TAG + '>';
private SnmpConverters() {
//Utility Class
}
@Converter
public static OIDList toOIDList(String s, Exchange exchange) {
OIDList list = new OIDList();
if (s != null && s.indexOf(",") != -1) {
// seems to be a comma separated oid list
StringTokenizer strTok = new StringTokenizer(s, ",");
while (strTok.hasMoreTokens()) {
String tok = strTok.nextToken();
if (tok != null && tok.trim().length() > 0) {
list.add(new OID(tok.trim()));
} else {
// empty token - skip
}
}
} else if (s != null) {
// maybe a single oid
list.add(new OID(s.trim()));
}
return list;
}
private static void entryAppend(StringBuilder sb, String tag, String value) {
sb.append(ENTRY_TAG_OPEN);
sb.append("<" + tag + ">");
sb.append(value);
sb.append("</" + tag + ">");
sb.append(ENTRY_TAG_CLOSE);
}
/**
* Converts the given snmp pdu to a String body.
*
* @param pdu the snmp pdu
* @return the text content
*/
@Converter
public static String toString(PDU pdu) {
// the output buffer
StringBuilder sb = new StringBuilder();
// prepare the header
if (pdu.getType() == PDU.V1TRAP) {
sb.append("<" + SNMP_TAG + " messageType=\"v1\">");
} else {
sb.append(SNMP_TAG_OPEN);
}
// Extract SNMPv1 specific variables
if (pdu.getType() == PDU.V1TRAP) {
PDUv1 v1pdu = (PDUv1) pdu;
entryAppend(sb, "enterprise", v1pdu.getEnterprise().toString());
entryAppend(sb, "agent-addr", v1pdu.getAgentAddress().toString());
entryAppend(sb, "generic-trap", Integer.toString(v1pdu.getGenericTrap()));
entryAppend(sb, "specific-trap", Integer.toString(v1pdu.getSpecificTrap()));
entryAppend(sb, "time-stamp", Long.toString(v1pdu.getTimestamp()));
}
// now loop all variables of the response
for (Object o : pdu.getVariableBindings()) {
VariableBinding b = (VariableBinding)o;
sb.append(ENTRY_TAG_OPEN);
sb.append(OID_TAG_OPEN);
sb.append(b.getOid().toString());
sb.append(OID_TAG_CLOSE);
sb.append(VALUE_TAG_OPEN);
sb.append(getXmlSafeString(b.getVariable().toString()));
sb.append(VALUE_TAG_CLOSE);
sb.append(ENTRY_TAG_CLOSE);
}
// prepare the footer
sb.append(SNMP_TAG_CLOSE);
return sb.toString();
}
private static String getXmlSafeString(String string) {
return string.replaceAll("<", "<").replaceAll(">", ">").replaceAll("&", "&").replaceAll("\"", """).replaceAll("'", "'");
}
}