// process request and analyze content with mib file
public void processPdu(CommandResponderEvent cre) {
try {
// create the SnmpMsg received
MsgSnmp msg = new MsgSnmp();
msg.setPdu(cre.getPDU());
// TODO: how to know the version here to set communityTarget or UserTarget
AbstractTarget target = null;
if ((cre.getMessageProcessingModel() == MessageProcessingModel.MPv1)
|| (cre.getMessageProcessingModel() == MessageProcessingModel.MPv2c)) {
target = new CommunityTarget();
((CommunityTarget) target)
.setCommunity(new OctetString(cre.getStateReference().getSecurityName()));
} else // TODO: manage of snmpV3 not done
target = new UserTarget();
if (cre.getMessageProcessingModel() == MessageProcessingModel.MPv1) {
target.setVersion(SnmpConstants.version1);
} else if (cre.getMessageProcessingModel() == MessageProcessingModel.MPv2c) {
target.setVersion(SnmpConstants.version2c);
} else if (cre.getMessageProcessingModel() == MessageProcessingModel.MPv3) {
target.setVersion(SnmpConstants.version3);
}
target.setAddress(cre.getPeerAddress());
msg.setTarget((AbstractTarget) target);
UdpAddress add = (UdpAddress) cre.getPeerAddress();
msg.setRemotePort(add.getPort());
msg.setRemoteHost(add.getInetAddress().getHostAddress());
msg.setListenpoint(listenpoint);
StackFactory.getStack(StackFactory.PROTOCOL_SNMP).receiveMessage(msg);
} catch (Exception ex) {
}
}
private void createSession() throws IOException {
if (snmp == null) {
Address address = GenericAddress.parse(deviceAddress);
AbstractTransportMapping transport;
if (address instanceof TlsAddress) {
transport = new TLSTM();
} else if (address instanceof TcpAddress) {
transport = new DefaultTcpTransportMapping();
} else {
transport = new DefaultUdpTransportMapping();
}
// Could save some CPU cycles:
transport.setAsyncMsgProcessingSupported(false);
snmp = new Snmp(transport);
snmp.listen();
if (getSnmpVersion() == SnmpConstants.version3) {
snmp.getUSM()
.addUser(
new OctetString("user"),
new UsmUser(
new OctetString("user"),
AuthMD5.ID,
new OctetString("user"),
AuthMD5.ID,
null));
// create the target
target = new UserTarget();
target.setSecurityLevel(SecurityLevel.AUTH_NOPRIV);
target.setSecurityName(new OctetString("user"));
} else {
// create the target
target = new CommunityTarget();
((CommunityTarget) target).setCommunity(new OctetString(configuration.getReadCommunity()));
}
target.setAddress(address);
target.setVersion(getSnmpVersion());
target.setRetries(retries);
target.setTimeout(timeout);
}
}
