private boolean processWalk(PDU response, PDU request, OID rootOID) throws SnmpException {
if ((response == null)
|| (response.getErrorStatus() != 0)
|| (response.getType() == PDU.REPORT)) {
return true;
}
boolean finished = false;
OID lastOID = request.get(0).getOid();
for (int i = 0; (!finished) && (i < response.size()); i++) {
VariableBinding vb = response.get(i);
if ((vb.getOid() == null)
|| (vb.getOid().size() < rootOID.size())
|| (rootOID.leftMostCompare(rootOID.size(), vb.getOid()) != 0)) {
finished = true;
} else if (Null.isExceptionSyntax(vb.getVariable().getSyntax())) {
outputResponse(vb);
finished = true;
} else if (vb.getOid().compareTo(lastOID) <= 0) {
throw new SnmpException(
"Variable received is not lexicographic successor of requested one:"
+ vb.toString()
+ " <= "
+ lastOID);
} else {
outputResponse(vb);
lastOID = vb.getOid();
}
}
if (response.size() == 0) {
finished = true;
}
if (!finished) {
VariableBinding next = response.get(response.size() - 1);
next.setVariable(new Null());
request.set(0, next);
request.setRequestID(new Integer32(0));
}
return finished;
}
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);
}
