public void onResponse(ResponseEvent re) { // Always cancel async request when response has been received // otherwise a memory leak is created! Not canceling a request // immediately can be useful when sending a request to a broadcast // address. try { Object source = re.getSource(); // test to ignore REPORTS from DISCOVERY messages in SNMPv3 if (!(source instanceof Snmp)) return; ((Snmp) source).cancel(re.getRequest(), this); // create the SnmpMsg received MsgSnmp msg = new MsgSnmp(); msg.setPdu(re.getResponse()); // TODO: how to know the version here to set communityTarget or UserTarget Target target = new CommunityTarget(); // ((CommunityTarget)target).setCommunity(new // OctetString(re.getStateReference().getSecurityName())); target.setAddress(re.getPeerAddress()); msg.setTarget((AbstractTarget) target); UdpAddress add = (UdpAddress) re.getPeerAddress(); msg.setRemotePort(add.getPort()); msg.setRemoteHost(add.getInetAddress().getHostAddress()); msg.setListenpoint(listenpoint); StackFactory.getStack(StackFactory.PROTOCOL_SNMP).receiveMessage(msg); } catch (Exception ex) { } }
public Target getTarget(String host, int port, int retries, int timeout) throws UnknownHostException { Target target = getTarget(); Address address = new UdpAddress(InetAddress.getByName(host), port); target.setAddress(address); target.setRetries(retries); target.setTimeout(timeout); return target; }
private Target makeSnmpTarget(HttpServletRequest request) throws UnknownHostException { String hostname = request.getParameter("host"); String community = request.getParameter("discoverSnmpCommunity"); if (community == null) { community = "public"; } int port = jrds.Util.parseStringNumber(request.getParameter("discoverSnmpPort"), 161); IpAddress addr = new UdpAddress(InetAddress.getByName(hostname), port); Target hosttarget = new CommunityTarget(addr, new OctetString(community)); hosttarget.setVersion(SnmpConstants.version2c); return hosttarget; }
@Override public void addConnection(JrdsElement hostElement, HttpServletRequest request) { JrdsElement snmpElem = hostElement.addElement("connection", "type=jrds.snmp.SnmpConnection"); if (hosttarget instanceof CommunityTarget) { CommunityTarget ct = (CommunityTarget) hosttarget; snmpElem.addElement("attr", "name=community").setTextContent(ct.getCommunity().toString()); } snmpElem .addElement("attr", "name=version") .setTextContent(Integer.toString(1 + hosttarget.getVersion())); }
private Request createSnmpRequest(URI url) throws UnknownHostException { String host = url.getHost(); int port = url.getPort(); if (port == -1) { port = SnmpConstants.DEFAULT_COMMAND_RESPONDER_PORT; } String userInfo = url.getUserInfo(); if (userInfo == null) { userInfo = defaultUserInfo; } String path = url.getPath(); String[] segments = path.split("/"); String contextInfo; String contextName = ""; OctetString contextEngineID = null; String oidPart = null; if (segments.length > 1) { contextInfo = segments[0]; oidPart = segments[1]; String[] contextInfos = contextInfo.split(";"); if (contextInfos.length > 1) { contextEngineID = OctetString.fromHexStringPairs(contextInfos[1]); } contextName = contextInfos[0]; } else if (segments.length == 1) { oidPart = segments[0]; } Target t = createTarget(new OctetString(userInfo)); if (host != null) { if (t instanceof CertifiedTarget) { t.setAddress(new TlsAddress(InetAddress.getByName(host), port)); } else { t.setAddress(new UdpAddress(InetAddress.getByName(host), port)); } } else { t = defaultTarget; } PDU pdu = pduFactory.createPDU(t); if (pdu instanceof ScopedPDU) { if (contextEngineID != null) { ((ScopedPDU) pdu).setContextEngineID(contextEngineID); } if (contextName != null) { ((ScopedPDU) pdu).setContextName(new OctetString(contextName)); } } SnmpUriType type = SnmpUriType.GET; if (oidPart != null && oidPart.endsWith(".*")) { type = SnmpUriType.SUBTREE; oidPart = oidPart.substring(0, oidPart.length() - 2); } else if (oidPart != null && oidPart.endsWith("+")) { type = SnmpUriType.NEXT; oidPart = oidPart.substring(0, oidPart.length() - 1); } List<OID> oids; if (oidPart != null && oidPart.contains("(")) { String[] oidStrings = oidPart.split("[\\(,\\),\\,]"); oids = new ArrayList<>(oidStrings.length); for (String oidString : oidStrings) { if (!oidString.isEmpty()) { OID o = new OID(oidString); if (o.isValid()) { oids.add(o); } } } } else if (oidPart != null) { oids = Collections.singletonList(new OID(oidPart)); } else { oids = Collections.emptyList(); } return new Request(t, pdu, oids.toArray(new OID[oids.size()]), type); }