@Override
public Msg parseMsgFromXml(Boolean request, Element root, Runner runner) throws Exception {
// header
Element header = root.element("header");
String version = header.attributeValue("version");
String community = header.attributeValue("community");
if (version == null) // get version given in config if not present in sendMessage
version = getConfig().getString("protocol.version", "1");
if (!Utils.isInteger(version)) throw new Exception("attribute version must be integer");
Integer versionInt = Integer.parseInt(version);
if (versionInt == 1) versionInt = SnmpConstants.version1;
else if (versionInt == 2) versionInt = SnmpConstants.version2c;
else if (versionInt == 3) versionInt = SnmpConstants.version3;
else throw new Exception("possible version for SNMP are 1, 2 or 3 exclusively");
Element pdu = root.element("pdu");
String name = pdu.attributeValue("name");
String type = pdu.attributeValue("type");
String requestId = pdu.attributeValue("requestId");
String errorStatus = pdu.attributeValue("errorStatus");
String errorIndex = pdu.attributeValue("errorIndex");
String nonRepeaters = pdu.attributeValue("nonRepeaters");
String maxRepetitions = pdu.attributeValue("maxRepetitions");
if ((type != null) && (name != null))
throw new Exception("type and name of the message " + name + " must not be set both");
if ((type == null) && (name == null))
throw new Exception("One of the parameter type or name of the message header must be set");
if ((type != null) && !Utils.isInteger(type))
throw new Exception("attribute type must be integer");
Integer typeInt = null;
if (type == null) {
if (name.equalsIgnoreCase("trap") && (versionInt == SnmpConstants.version1))
typeInt = PDU.V1TRAP;
else {
typeInt = PDU.getTypeFromString(name.toUpperCase());
if (typeInt < -100)
throw new Exception("the type " + name + " specified is unknown in the SNMP protocol");
}
} else typeInt = Integer.parseInt(type);
if (((errorStatus != null) || (errorIndex != null))
&& ((nonRepeaters != null) || (maxRepetitions != null)))
throw new Exception(
"The attributes errorStatus or errorIndex must not be set with nonRepeaters or maxRepetitions");
if ((requestId == null) || !Utils.isInteger(requestId))
throw new Exception("attribute requestId must be integer");
if (((errorStatus != null) && !Utils.isInteger(errorStatus))
|| ((errorIndex != null) && !Utils.isInteger(errorIndex)))
throw new Exception("attribute errorStatus and errorIndex must be integer");
if (((nonRepeaters != null) && !Utils.isInteger(nonRepeaters))
|| ((maxRepetitions != null) && !Utils.isInteger(maxRepetitions)))
throw new Exception("attribute nonRepeaters and maxRepetitions must be integer");
Integer requestIdInt = (requestId != null) ? Integer.parseInt(requestId) : null;
Integer errorStatusInt = (errorStatus != null) ? Integer.parseInt(errorStatus) : null;
Integer errorIndexInt = (errorIndex != null) ? Integer.parseInt(errorIndex) : null;
Integer nonRepeatersInt = (nonRepeaters != null) ? Integer.parseInt(nonRepeaters) : null;
Integer maxRepetitionsInt = (maxRepetitions != null) ? Integer.parseInt(maxRepetitions) : null;
MsgSnmp msgSmtp =
new MsgSnmp(
versionInt,
community,
typeInt,
requestIdInt,
errorStatusInt,
errorIndexInt,
nonRepeatersInt,
maxRepetitionsInt);
// specific parameter for snmpv1 Trap to check and add to pdu
if ((msgSmtp.getPdu() instanceof PDUv1) && (typeInt == PDU.V1TRAP)) {
String enterprise = pdu.attributeValue("enterprise");
String agentAddress = pdu.attributeValue("agentAddress");
String genericTrap = pdu.attributeValue("genericTrap");
String specificTrap = pdu.attributeValue("specificTrap");
String timestamp = pdu.attributeValue("timestamp");
if (genericTrap.equalsIgnoreCase("enterpriseSpecific") && !Utils.isInteger(specificTrap))
throw new Exception(
"specificTrap attribute must be an integer when enterpriseSpecific if given for genereicTrap in SNMPV1 TRAP message");
if (!Utils.isInteger(timestamp)) throw new Exception("timestamp must be an integer");
int genericTrapInt = 0;
if (genericTrap.equalsIgnoreCase("coldStart")) genericTrapInt = PDUv1.COLDSTART;
else if (genericTrap.equalsIgnoreCase("warmStart")) genericTrapInt = PDUv1.WARMSTART;
else if (genericTrap.equalsIgnoreCase("linkDown")) genericTrapInt = PDUv1.LINKDOWN;
else if (genericTrap.equalsIgnoreCase("linkUp")) genericTrapInt = PDUv1.LINKUP;
else if (genericTrap.equalsIgnoreCase("authenticationFailure"))
genericTrapInt = PDUv1.AUTHENTICATIONFAILURE;
else if (genericTrap.equalsIgnoreCase("egpNeighborLoss"))
genericTrapInt = 5; // specified in rfc 1157, but not present in snmp4j stack
else if (genericTrap.equalsIgnoreCase("enterpriseSpecific"))
genericTrapInt = PDUv1.ENTERPRISE_SPECIFIC;
else throw new Exception("genericTrap attribute is unknown");
((PDUv1) msgSmtp.getPdu()).setEnterprise(new OID(enterprise));
((PDUv1) msgSmtp.getPdu()).setAgentAddress(new IpAddress(agentAddress));
((PDUv1) msgSmtp.getPdu()).setGenericTrap(genericTrapInt);
((PDUv1) msgSmtp.getPdu()).setSpecificTrap(Integer.parseInt(specificTrap));
((PDUv1) msgSmtp.getPdu()).setTimestamp(Integer.parseInt(timestamp));
}
List<Element> variables = pdu.elements("variableBinding");
for (Element var : variables) {
parseVariableBinding(var, msgSmtp.getPdu());
}
return msgSmtp;
}