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;
}
/**
* Implementing the Observer interface. Receiving the response from the Pdu.
*
* @param obs the UpSincePdu variable
* @param ov the date
* @see uk.co.westhawk.snmp.pdu.UpSincePdu
*/
public void update(Observable obs, Object ov) {
Pdu pdu = (Pdu) obs;
if (pdu.getErrorStatus() == AsnObject.SNMP_ERR_NOERROR) {
Date dres = (Date) ov;
if (dres != null) {
// TODO: invokeLater
v.setText(dres.toString());
}
} else {
// TODO: invokeLater
v.setText(pdu.getErrorStatusString());
}
}
/**
* 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;
}
private static Boolean hasTpField(Pdu pdu, String fieldName) {
try {
Method m = pdu.getClass().getMethod("has" + fieldName);
return (Boolean) m.invoke(pdu);
} catch (Exception e) {
}
return null;
}
// ==================================================
// ENCODING/DECODING utility methods
// ==================================================
private static Integer getTpField(Pdu pdu, String fieldName) {
try {
Method m = pdu.getClass().getMethod("get" + fieldName);
return (Integer) m.invoke(pdu);
} catch (Exception e) {
}
return null;
}
public static String decodeDataCodingScheme(Pdu pdu) {
StringBuffer sb = new StringBuffer();
switch (PduUtils.extractDcsEncoding(pdu.getDataCodingScheme())) {
case PduUtils.DCS_ENCODING_7BIT:
sb.append("7-bit GSM Alphabet");
break;
case PduUtils.DCS_ENCODING_8BIT:
sb.append("8-bit encoding");
break;
case PduUtils.DCS_ENCODING_UCS2:
sb.append("UCS2 encoding");
break;
}
// are flash messages are only applicable to general coding group?
if ((pdu.getDataCodingScheme() & ~PduUtils.DCS_CODING_GROUP_GENERAL) == 0) {
if (PduUtils.extractDcsFlash(pdu.getDataCodingScheme()) == PduUtils.DCS_MESSAGE_CLASS_FLASH) {
sb.append(", (Flash Message)");
}
}
return sb.toString();
}
/** 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);
}
}
public static String decodeFirstOctet(Pdu pdu) {
// Use reflection to check for method signatures hasTpXXX() and getTpXXX()
// that are specific to a particular type in actual object
StringBuffer sb = new StringBuffer();
sb.append("First Octet: " + PduUtils.byteToPdu(pdu.getFirstOctet()));
sb.append(" [");
// TP-MTI
switch (pdu.getTpMti()) {
case PduUtils.TP_MTI_SMS_DELIVER:
sb.append("TP-MTI: (SMS-DELIVER)");
break;
case PduUtils.TP_MTI_SMS_STATUS_REPORT:
sb.append("TP-MTI: (SMS-STATUS REPORT)");
break;
case PduUtils.TP_MTI_SMS_SUBMIT:
sb.append("TP-MTI: (SMS-SUBMIT)");
break;
default:
throw new RuntimeException("Invalid message type");
}
// TP-MMS
if (hasTpField(pdu, "TpMms") != null) {
if (hasTpField(pdu, "TpMms")) {
sb.append(", TP-MMS: (Has more messages)");
} else {
sb.append(", TP-MMS: (has no messages)");
}
}
// TP-RD
if (hasTpField(pdu, "TpRd") != null) {
if (hasTpField(pdu, "TpRd")) {
sb.append(", TP-RD: (Reject duplicates)");
} else {
sb.append(", TP-RD: (allow duplicates)");
}
}
// TP-VPF
if ((hasTpField(pdu, "TpVpf") != null) && (hasTpField(pdu, "TpVpf") != false)) {
switch (getTpField(pdu, "TpVpf")) {
case PduUtils.TP_VPF_INTEGER:
sb.append(", TP-VPF: (validity format, integer");
break;
case PduUtils.TP_VPF_TIMESTAMP:
sb.append(", TP-VPF: (validity format, timestamp");
break;
case PduUtils.TP_VPF_NONE:
sb.append(", TP-VPF: (validity format, none)");
break;
}
}
// TP-SRI
if (hasTpField(pdu, "TpSri") != null) {
if (hasTpField(pdu, "TpSri")) {
sb.append(", TP-SRI: (Requests Status Report)");
} else {
sb.append(", TP-SRI: (No Status Report)");
}
}
// TP-SRR
if (hasTpField(pdu, "TpSrr") != null) {
if (hasTpField(pdu, "TpSrr")) {
sb.append(", TP-SRR: (Requests Status Report)");
} else {
sb.append(", TP-SRR: (No Status Report)");
}
}
// TP-UDHI
if (pdu.hasTpUdhi()) {
sb.append(", TP-UDHI: (has UDH)");
} else {
sb.append(", TP-UDHI: (no UDH)");
}
sb.append("]");
sb.append("\n");
return sb.toString();
}
