public final Pdu read() throws IOException {
Pdu pdu = new Pdu();
pdu.id = readUInt2();
int length = readUInt3();
pdu.version = readUInt2();
pdu.payload = cipher.encrypt(readBytes(length));
return pdu;
}
/**
* Adds an pdu. This method adds the Pdu and checks if discovery is needed depending on the
* parameter <code>checkDiscovery</code>. If discovery is needed this method will block until it
* have done so. Discovery is only needed if the stack is non authoritative.
*
* @param pdu the pdu
* @param checkDiscovery check if discovery is needed
* @return pdu is succesful added
* @see AbstractSnmpContext#addPdu(Pdu)
* @see #addDiscoveryPdu(DiscoveryPdu)
* @see #addPdu(Pdu)
*/
protected boolean addPdu(Pdu pdu, boolean checkDiscovery)
throws java.io.IOException, PduException {
boolean added = super.addPdu(pdu);
if (checkDiscovery == true && isAuthoritative(pdu.getMsgType()) == false) {
discoverIfNeeded();
}
return added;
}
/** Processes an incoming SNMP v3 message. */
protected void ProcessIncomingMessage(AsnDecoder rpdu, ByteArrayInputStream in)
throws DecodingException, IOException {
byte[] bu = null;
// need to duplicate the message for V3 to rewrite
int nb = in.available();
bu = new byte[nb];
in.read(bu);
in = new ByteArrayInputStream(bu);
AsnSequence asnTopSeq = rpdu.DecodeSNMPv3(in);
int msgId = rpdu.getMsgId(asnTopSeq);
Integer rid = (Integer) msgIdHash.get(new Integer(msgId));
if (rid != null) {
if (AsnObject.debug > 6) {
System.out.println(
"SnmpContextv3.ProcessIncomingMessage(): msgId=" + msgId + ", Pdu reqId=" + rid);
}
Pdu pdu = getPdu(rid);
try {
AsnPduSequence pduSeq = rpdu.processSNMPv3(this, asnTopSeq, bu);
if (pduSeq != null) {
// got a message
Integer rid2 = new Integer(pduSeq.getReqId());
if (AsnObject.debug > 6) {
System.out.println("SnmpContextv3.ProcessIncomingMessage():" + " rid2=" + rid2);
}
Pdu newPdu = null;
if (rid2.intValue() != rid.intValue()) {
newPdu = getPdu(rid2);
if (AsnObject.debug > 3) {
System.out.println(
"ProcessIncomingMessage(): "
+ "pduReqId of msgId ("
+ rid.intValue()
+ ") != pduReqId of Pdu ("
+ rid2.intValue()
+ ")");
}
if (newPdu == null) {
if (AsnObject.debug > 3) {
System.out.println(
"ProcessIncomingMessage(): "
+ "Using pduReqId of msgId ("
+ rid.intValue()
+ ")");
}
}
}
if (newPdu != null) {
pdu = newPdu;
}
} else {
if (AsnObject.debug > 6) {
System.out.println("SnmpContextv3.ProcessIncomingMessage():" + " pduSeq is null.");
}
}
if (pdu != null) {
pdu.fillin(pduSeq);
} else {
if (AsnObject.debug > 6) {
System.out.println("ProcessIncomingMessage(): No Pdu with reqid " + rid.intValue());
}
}
} catch (DecodingException exc) {
if (pdu != null) {
pdu.setErrorStatus(AsnObject.SNMP_ERR_DECODING_EXC, exc);
pdu.fillin(null);
} else {
throw exc;
}
}
} else {
if (AsnObject.debug > 3) {
System.out.println("Pdu of msgId " + msgId + " is already answered");
}
rid = new Integer(-1);
}
}