@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer)
throws Exception {
// wait for prefix
if (buffer.readableBytes() < 4) {
return null;
}
int length = buffer.getInt(buffer.readerIndex());
// wait for the complete event
if (buffer.readableBytes() < length + 4) {
return null;
}
// skip package length header
buffer.skipBytes(4);
// decode
int typeLength = buffer.readInt();
String type = buffer.toString(buffer.readerIndex(), typeLength, "UTF-8");
int eventLength = length - typeLength;
byte[] eventBytes = new byte[eventLength];
buffer.skipBytes(typeLength);
buffer.readBytes(eventBytes);
return new Event(type, eventBytes);
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
prefix = buf.toString(buf.readerIndex(), 4, CHARSET);
buf.skipBytes(prefix.length()); // prefix @NTC by default
serverId = buf.readUnsignedInt();
deviceUniqueId = buf.readUnsignedInt();
int length = buf.readUnsignedShort();
buf.skipBytes(2); // header and data XOR checksum
if (length == 0) {
return null; // keep alive message
}
String type = buf.toString(buf.readerIndex(), 3, CHARSET);
buf.skipBytes(type.length());
switch (type) {
case "*>T":
return processSingle(channel, buf);
case "*>A":
return processArray(channel, buf);
case "*>S":
return processHandshake(channel, buf);
default:
Log.warning(new UnsupportedOperationException(type));
break;
}
return null;
}
/**
* Returns Linked list of optional tlvs.
*
* @param cb of channel buffer.
* @return list of optional tlvs
* @throws PcepParseException when unsupported tlv is received
*/
protected static LinkedList<PcepValueType> parseOptionalTlv(ChannelBuffer cb)
throws PcepParseException {
LinkedList<PcepValueType> llOutOptionalTlv;
llOutOptionalTlv = new LinkedList<>();
while (MINIMUM_COMMON_HEADER_LENGTH <= cb.readableBytes()) {
PcepValueType tlv = null;
short hType = cb.readShort();
short hLength = cb.readShort();
int iValue = 0;
switch (hType) {
case StatefulIPv4LspIdentifiersTlv.TYPE:
tlv = StatefulIPv4LspIdentifiersTlv.read(cb);
break;
case StatefulLspErrorCodeTlv.TYPE:
iValue = cb.readInt();
tlv = new StatefulLspErrorCodeTlv(iValue);
break;
case StatefulRsvpErrorSpecTlv.TYPE:
tlv = StatefulRsvpErrorSpecTlv.read(cb);
break;
case SymbolicPathNameTlv.TYPE:
tlv = SymbolicPathNameTlv.read(cb, hLength);
break;
case StatefulLspDbVerTlv.TYPE:
tlv = StatefulLspDbVerTlv.read(cb);
break;
default:
// Skip the unknown TLV.
cb.skipBytes(hLength);
tlv = null;
log.info("Received unsupported TLV type :" + hType + " in LSP object.");
}
// Check for the padding
int pad = hLength % 4;
if (0 < pad) {
pad = 4 - pad;
if (pad <= cb.readableBytes()) {
cb.skipBytes(pad);
}
}
if (tlv != null) {
llOutOptionalTlv.add(tlv);
}
}
if (0 < cb.readableBytes()) {
throw new PcepParseException("Optional Tlv parsing error. Extra bytes received.");
}
return llOutOptionalTlv;
}
@Override
protected Object decode(
ChannelHandlerContext chtx, Channel chan, ChannelBuffer in, AuthenticationStage state)
throws Exception {
switch (state) {
case VALIDATION:
int bytesLeft = readableBytes(in);
if (bytesLeft >= 3) {
int type = in.readUnsignedByte();
int size = in.readUnsignedShort();
if (size != readableBytes(in)) {
throw new Exception("Mismatched login packet size.");
}
int version = in.readInt();
if (version != 614) {
throw new Exception("Incorrect revision read");
}
if (type == 16 || type == 18) {
checkpoint(AuthenticationStage.DETAILS);
}
}
break;
case DETAILS:
in.readUnsignedByte();
int mode = in.readUnsignedByte();
in.readUnsignedShort();
in.readUnsignedShort();
in.readUnsignedByte();
in.skipBytes(24);
readRS2String(in); // macaddress!
in.readInt();
int size = in.readUnsignedByte();
in.skipBytes(size);
in.skipBytes(6 + (33 * 4) + 8 + 2 + 14);
if (in.readUnsignedByte() != 10) {
throw new Exception("Invalid RSA header.");
}
in.readLong();
in.readLong();
long l = in.readLong();
String name = longToString(l);
String password = readRS2String(in);
int left = readableBytes(in);
in.skipBytes(left);
return new LoginRequest(chan, chtx, name, password, mode);
}
return null;
}
private void decodeEventData(int event, ChannelBuffer buf) {
switch (event) {
case 2:
case 40:
buf.readUnsignedByte();
break;
case 9:
buf.readUnsignedMedium();
break;
case 31:
case 32:
buf.readUnsignedShort();
break;
case 38:
buf.skipBytes(4 * 9);
break;
case 113:
buf.readUnsignedInt();
buf.readUnsignedByte();
break;
case 121:
case 142:
buf.readLong();
break;
case 130:
buf.readUnsignedInt(); // incorrect
break;
default:
break;
}
}
@Override
public OFActionSetField readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property type == 25
short type = bb.readShort();
if (type != (short) 0x19)
throw new OFParseError("Wrong type: Expected=OFActionType.SET_FIELD(25), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
OFOxm<?> field = OFOxmVer12.READER.readFrom(bb);
// align message to 8 bytes (length contains aligned value)
bb.skipBytes(length - (bb.readerIndex() - start));
OFActionSetFieldVer12 actionSetFieldVer12 = new OFActionSetFieldVer12(field);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", actionSetFieldVer12);
return actionSetFieldVer12;
}
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf)
throws Exception {
char marker = (char) buf.getByte(buf.readerIndex());
while (marker != '*' && marker != '$' && buf.readableBytes() > 0) {
buf.skipBytes(1);
if (buf.readableBytes() > 0) {
marker = (char) buf.getByte(buf.readerIndex());
}
}
if (marker == '*') {
// Return text message
int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '#');
if (index != -1) {
return buf.readBytes(index + 1 - buf.readerIndex());
}
} else if (marker == '$' && buf.readableBytes() >= MESSAGE_LENGTH) {
// Return binary message
return buf.readBytes(MESSAGE_LENGTH);
}
return null;
}
/**
* Returns linked list of sub objects.
*
* @param cb of type channel buffer
* @return linked list of sub objects
* @throws PcepParseException while parsing subobjects from channel buffer
*/
protected static LinkedList<PcepValueType> parseSubObjects(ChannelBuffer cb)
throws PcepParseException {
LinkedList<PcepValueType> llSubObjects = new LinkedList<PcepValueType>();
while (0 < cb.readableBytes()) {
// check the Type of the Subobjects.
byte yType = cb.readByte();
yType = (byte) (yType & (YTYPE_SHIFT_VALUE));
byte hLength = cb.readByte();
PcepValueType subObj;
switch (yType) {
case IPv4SubObject.TYPE:
subObj = IPv4SubObject.read(cb);
break;
default:
throw new PcepParseException("Invalid sub object. Type: " + (int) yType);
}
// Check for the padding
int pad = hLength % 4;
if (0 < pad) {
pad = 4 - pad;
if (pad <= cb.readableBytes()) {
cb.skipBytes(pad);
}
}
llSubObjects.add(subObj);
}
return llSubObjects;
}
@Override
public OFMatchV3 readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property type == 0x1
short type = bb.readShort();
if (type != (short) 0x1) throw new OFParseError("Wrong type: Expected=0x1(0x1), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
OFOxmList oxmList =
OFOxmList.readFrom(bb, length - (bb.readerIndex() - start), OFOxmVer14.READER);
// align message to 8 bytes (length does not contain alignment)
bb.skipBytes(((length + 7) / 8 * 8) - length);
OFMatchV3Ver14 matchV3Ver14 = new OFMatchV3Ver14(oxmList);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", matchV3Ver14);
return matchV3Ver14;
}
/**
* Handles a received {@link MBeanServerConnection} invocation
*
* @param channel The channel the request was received on
* @param remoteAddress The remote address of the caller
* @param buffer THe buffer received
*/
public static void handleJMXRequest(
Channel channel, SocketAddress remoteAddress, ChannelBuffer buffer) {
buffer.resetReaderIndex();
/* The request write */
// cb.writeByte(OpCode.JMX_REQUEST.op()); // 1
// cb.writeBytes(domainInfoData); // domain data
// cb.writeInt(reqId); // 4
// cb.writeByte(methodToKey.get(method)); // 1
// cb.writeInt(sargs.length); // 4
// cb.writeBytes(sargs); // sargs.length
Object result = null;
MBeanServerConnection server = null;
buffer.skipBytes(1);
byte domainIndicator = buffer.readByte();
if (domainIndicator == 0) {
server = JMXHelper.getHeliosMBeanServer();
} else {
byte[] domainBytes = new byte[domainIndicator];
buffer.readBytes(domainBytes);
String domain = new String(domainBytes);
server = JMXHelper.getLocalMBeanServer(true, domain);
if (server == null) {
result = new SmallException("Failed to locate MBeanServer for domain [" + domain + "]");
}
}
int reqId = buffer.readInt();
byte methodId = buffer.readByte();
if (result == null) {
int payloadSize = buffer.readInt();
byte[] payload = new byte[payloadSize];
buffer.readBytes(payload);
Object[] params = getInput(payload);
Method targetMethod = null;
try {
targetMethod = keyToMethod.get(methodId);
if (targetMethod == null) {
result =
new SmallException(
"Failed to handle MBeanServerConnection invocation because method Op Code ["
+ methodId
+ "] was not recognized");
} else {
if ("addNotificationListener".equals(targetMethod.getName())
&& !targetMethod.getParameterTypes()[1].equals(ObjectName.class)) {
} else if ("removeNotificationListener".equals(targetMethod.getName())
&& !targetMethod.getParameterTypes()[1].equals(ObjectName.class)) {
} else {
result = targetMethod.invoke(server, params);
}
}
} catch (Throwable t) {
SimpleLogger.warn("Failed to invoke [", targetMethod, "]", t);
result = new SmallException(t.toString());
}
}
writeJMXResponse(reqId, methodId, channel, remoteAddress, result);
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
if (handshakeComplete) {
super.messageReceived(ctx, e);
} else {
if (e.getMessage() instanceof ChannelBuffer) {
ChannelBuffer newBuffer = (ChannelBuffer) e.getMessage();
buffered = ChannelBuffers.copiedBuffer(buffered, newBuffer);
if (buffered.readableBytes() < 8) {
return;
}
int payloadLength = buffered.getInt(0);
int revision = buffered.getInt(4);
boolean handshakeSuccessful = false;
if (revision == 1 || revision == -1) {
if (buffered.readableBytes() < payloadLength + 4) {
return;
}
buffered.skipBytes(8);
if (revision == 1) {
handshakeSuccessful = handleRevision1Response(ctx, payloadLength);
} else {
handshakeSuccessful = handleGenericResponse(ctx, payloadLength);
}
} else {
handshakeSuccessful = handleUnknownRevisionResponse(ctx);
}
if (!handshakeSuccessful) {
ctx.getChannel().close();
}
if (keepAliveInterval.millis() > 0) {
ctx.getPipeline()
.addBefore(
ctx.getName(),
"found-connection-keep-alive",
new ConnectionKeepAliveHandler(scheduler, keepAliveInterval));
}
handshakeComplete = true;
ChannelBuffer remaining = buffered.slice();
if (remaining.readableBytes() > 0) {
ctx.sendUpstream(
new UpstreamMessageEvent(
ctx.getChannel(), remaining, ctx.getChannel().getRemoteAddress()));
}
ctx.getPipeline().remove(this);
}
}
}
/**
* Reads the channel buffer and returns object of NodeAttributesTlv.
*
* @param c input channel buffer
* @param hLength length
* @return object of NodeAttributesTlv
* @throws PcepParseException if mandatory fields are missing
*/
public static PcepValueType read(ChannelBuffer c, short hLength) throws PcepParseException {
// Node Descriptor Sub-TLVs (variable)
List<PcepValueType> llNodeAttributesSubTLVs = new LinkedList<>();
ChannelBuffer tempCb = c.readBytes(hLength);
while (TLV_HEADER_LENGTH <= tempCb.readableBytes()) {
PcepValueType tlv;
short hType = tempCb.readShort();
int iValue = 0;
short length = tempCb.readShort();
switch (hType) {
case NodeFlagBitsSubTlv.TYPE:
byte cValue = tempCb.readByte();
tlv = new NodeFlagBitsSubTlv(cValue);
break;
case OpaqueNodePropertiesSubTlv.TYPE:
tlv = OpaqueNodePropertiesSubTlv.read(tempCb, length);
break;
case NodeNameSubTlv.TYPE:
tlv = NodeNameSubTlv.read(tempCb, length);
break;
case IsisAreaIdentifierSubTlv.TYPE:
tlv = IsisAreaIdentifierSubTlv.read(tempCb, length);
break;
case IPv4RouterIdOfLocalNodeSubTlv.TYPE:
iValue = tempCb.readInt();
tlv = new IPv4RouterIdOfLocalNodeSubTlv(iValue);
break;
case IPv6RouterIdofLocalNodeSubTlv.TYPE:
byte[] ipv6Value = new byte[IPv6RouterIdofLocalNodeSubTlv.VALUE_LENGTH];
tempCb.readBytes(ipv6Value, 0, IPv6RouterIdofLocalNodeSubTlv.VALUE_LENGTH);
tlv = new IPv6RouterIdofLocalNodeSubTlv(ipv6Value);
break;
default:
throw new PcepParseException("Unsupported Sub TLV type :" + hType);
}
// Check for the padding
int pad = length % 4;
if (0 < pad) {
pad = 4 - pad;
if (pad <= tempCb.readableBytes()) {
tempCb.skipBytes(pad);
}
}
llNodeAttributesSubTLVs.add(tlv);
}
if (0 < tempCb.readableBytes()) {
throw new PcepParseException("Sub Tlv parsing error. Extra bytes received.");
}
return new NodeAttributesTlv(llNodeAttributesSubTLVs);
}
/**
* Returns Linked list of PCEP Value Type.
*
* @param cb of channel buffer
* @return Linked list of PCEP Value Type
* @throws PcepParseException if mandatory fields are missing
*/
protected static LinkedList<PcepValueType> parseOptionalTlv(ChannelBuffer cb)
throws PcepParseException {
LinkedList<PcepValueType> llOutOptionalTlv;
llOutOptionalTlv = new LinkedList<PcepValueType>();
while (MINIMUM_TLV_HEADER_LENGTH <= cb.readableBytes()) {
PcepValueType tlv;
short hType = cb.readShort();
short hLength = cb.readShort();
long lValue = 0;
switch (hType) {
case RoutingUniverseTlv.TYPE:
lValue = cb.readLong();
tlv = new RoutingUniverseTlv(lValue);
break;
case LocalTENodeDescriptorsTlv.TYPE:
tlv = LocalTENodeDescriptorsTlv.read(cb, hLength);
break;
case RemoteTENodeDescriptorsTlv.TYPE:
tlv = RemoteTENodeDescriptorsTlv.read(cb, hLength);
break;
case TELinkDescriptorsTlv.TYPE:
tlv = TELinkDescriptorsTlv.read(cb, hLength);
break;
case TENodeAttributesTlv.TYPE:
tlv = TENodeAttributesTlv.read(cb, hLength);
break;
case TELinkAttributesTlv.TYPE:
tlv = TELinkAttributesTlv.read(cb, hLength);
break;
default:
throw new PcepParseException("Unsupported TLV type :" + hType);
}
// Check for the padding
int pad = hLength % 4;
if (0 < pad) {
pad = 4 - pad;
if (pad <= cb.readableBytes()) {
cb.skipBytes(pad);
}
}
llOutOptionalTlv.add(tlv);
}
if (0 < cb.readableBytes()) {
throw new PcepParseException("Optional Tlv parsing error. Extra bytes received.");
}
return llOutOptionalTlv;
}
@Override
public OFGroupFeaturesStatsReply readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 3
byte version = bb.readByte();
if (version != (byte) 0x3)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_12(3), got=" + version);
// fixed value property type == 19
byte type = bb.readByte();
if (type != (byte) 0x13)
throw new OFParseError("Wrong type: Expected=OFType.STATS_REPLY(19), got=" + type);
int length = U16.f(bb.readShort());
if (length != 56) throw new OFParseError("Wrong length: Expected=56(56), got=" + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property statsType == 8
short statsType = bb.readShort();
if (statsType != (short) 0x8)
throw new OFParseError(
"Wrong statsType: Expected=OFStatsType.GROUP_FEATURES(8), got=" + statsType);
Set<OFStatsReplyFlags> flags = OFStatsReplyFlagsSerializerVer12.readFrom(bb);
// pad: 4 bytes
bb.skipBytes(4);
long types = U32.f(bb.readInt());
long capabilities = U32.f(bb.readInt());
long maxGroupsAll = U32.f(bb.readInt());
long maxGroupsSelect = U32.f(bb.readInt());
long maxGroupsIndirect = U32.f(bb.readInt());
long maxGroupsFf = U32.f(bb.readInt());
long actionsAll = U32.f(bb.readInt());
long actionsSelect = U32.f(bb.readInt());
long actionsIndirect = U32.f(bb.readInt());
long actionsFf = U32.f(bb.readInt());
OFGroupFeaturesStatsReplyVer12 groupFeaturesStatsReplyVer12 =
new OFGroupFeaturesStatsReplyVer12(
xid,
flags,
types,
capabilities,
maxGroupsAll,
maxGroupsSelect,
maxGroupsIndirect,
maxGroupsFf,
actionsAll,
actionsSelect,
actionsIndirect,
actionsFf);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", groupFeaturesStatsReplyVer12);
return groupFeaturesStatsReplyVer12;
}
/**
* Read a PeerAddress from a Netty buffer. I did not want to include ChannelBuffer in the class
* PeerAddress
*
* @param buffer The Netty buffer
* @return A PeerAddress created from the buffer (deserialized)
*/
private static PeerAddress readPeerAddress(final ChannelBuffer buffer) {
if (buffer.readableBytes() < 21) return null;
Number160 id = readID(buffer);
// peek
int type = buffer.getUnsignedByte(buffer.readerIndex());
// now we know the length
int len = PeerAddress.expectedSocketLength(type);
if (buffer.readableBytes() < len) return null;
PeerAddress peerAddress =
new PeerAddress(id, buffer.array(), buffer.arrayOffset() + buffer.readerIndex());
buffer.skipBytes(len);
return peerAddress;
}
/**
* @return the next ChannelBuffer to send as a HttpChunk and modifying currentBuffer accordingly
*/
private ChannelBuffer fillChannelBuffer() {
int length = currentBuffer.readableBytes();
if (length > HttpPostBodyUtil.chunkSize) {
ChannelBuffer slice =
currentBuffer.slice(currentBuffer.readerIndex(), HttpPostBodyUtil.chunkSize);
currentBuffer.skipBytes(HttpPostBodyUtil.chunkSize);
return slice;
} else {
// to continue
ChannelBuffer slice = currentBuffer;
currentBuffer = null;
return slice;
}
}
@Override
public OFBsnGentableBucketStatsReply readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 4
byte version = bb.readByte();
if (version != (byte) 0x4)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_13(4), got=" + version);
// fixed value property type == 19
byte type = bb.readByte();
if (type != (byte) 0x13)
throw new OFParseError("Wrong type: Expected=OFType.STATS_REPLY(19), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property statsType == 65535
short statsType = bb.readShort();
if (statsType != (short) 0xffff)
throw new OFParseError(
"Wrong statsType: Expected=OFStatsType.EXPERIMENTER(65535), got=" + statsType);
Set<OFStatsReplyFlags> flags = OFStatsReplyFlagsSerializerVer13.readFrom(bb);
// pad: 4 bytes
bb.skipBytes(4);
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
// fixed value property subtype == 0x5L
int subtype = bb.readInt();
if (subtype != 0x5)
throw new OFParseError("Wrong subtype: Expected=0x5L(0x5L), got=" + subtype);
List<OFBsnGentableBucketStatsEntry> entries =
ChannelUtils.readList(
bb, length - (bb.readerIndex() - start), OFBsnGentableBucketStatsEntryVer13.READER);
OFBsnGentableBucketStatsReplyVer13 bsnGentableBucketStatsReplyVer13 =
new OFBsnGentableBucketStatsReplyVer13(xid, flags, entries);
if (logger.isTraceEnabled())
logger.trace("readFrom - read={}", bsnGentableBucketStatsReplyVer13);
return bsnGentableBucketStatsReplyVer13;
}
@Override
public OFBsnImageDescStatsReply readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 5
byte version = bb.readByte();
if (version != (byte) 0x5)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_14(5), got=" + version);
// fixed value property type == 19
byte type = bb.readByte();
if (type != (byte) 0x13)
throw new OFParseError("Wrong type: Expected=OFType.STATS_REPLY(19), got=" + type);
int length = U16.f(bb.readShort());
if (length != 536) throw new OFParseError("Wrong length: Expected=536(536), got=" + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property statsType == 65535
short statsType = bb.readShort();
if (statsType != (short) 0xffff)
throw new OFParseError(
"Wrong statsType: Expected=OFStatsType.EXPERIMENTER(65535), got=" + statsType);
Set<OFStatsReplyFlags> flags = OFStatsReplyFlagsSerializerVer14.readFrom(bb);
// pad: 4 bytes
bb.skipBytes(4);
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
// fixed value property subtype == 0xeL
int subtype = bb.readInt();
if (subtype != 0xe)
throw new OFParseError("Wrong subtype: Expected=0xeL(0xeL), got=" + subtype);
String imageChecksum = ChannelUtils.readFixedLengthString(bb, 256);
String startupConfigChecksum = ChannelUtils.readFixedLengthString(bb, 256);
OFBsnImageDescStatsReplyVer14 bsnImageDescStatsReplyVer14 =
new OFBsnImageDescStatsReplyVer14(xid, flags, imageChecksum, startupConfigChecksum);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", bsnImageDescStatsReplyVer14);
return bsnImageDescStatsReplyVer14;
}
@Override
public OFBsnGentableDescStatsRequest readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 4
byte version = bb.readByte();
if (version != (byte) 0x4)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_13(4), got=" + version);
// fixed value property type == 18
byte type = bb.readByte();
if (type != (byte) 0x12)
throw new OFParseError("Wrong type: Expected=OFType.STATS_REQUEST(18), got=" + type);
int length = U16.f(bb.readShort());
if (length != 24) throw new OFParseError("Wrong length: Expected=24(24), got=" + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property statsType == 65535
short statsType = bb.readShort();
if (statsType != (short) 0xffff)
throw new OFParseError(
"Wrong statsType: Expected=OFStatsType.EXPERIMENTER(65535), got=" + statsType);
Set<OFStatsRequestFlags> flags = OFStatsRequestFlagsSerializerVer13.readFrom(bb);
// pad: 4 bytes
bb.skipBytes(4);
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
// fixed value property subtype == 0x4L
int subtype = bb.readInt();
if (subtype != 0x4)
throw new OFParseError("Wrong subtype: Expected=0x4L(0x4L), got=" + subtype);
OFBsnGentableDescStatsRequestVer13 bsnGentableDescStatsRequestVer13 =
new OFBsnGentableDescStatsRequestVer13(xid, flags);
if (logger.isTraceEnabled())
logger.trace("readFrom - read={}", bsnGentableDescStatsRequestVer13);
return bsnGentableDescStatsRequestVer13;
}
/**
* @param headerLength
* @param middleLength
* @param endLength
* @param buf
* @return the new EndTransferPacket from buffer
* @throws OpenR66ProtocolPacketException
*/
public static EndTransferPacket createFromBuffer(
int headerLength, int middleLength, int endLength, ChannelBuffer buf)
throws OpenR66ProtocolPacketException {
if (headerLength - 1 != 1) {
throw new OpenR66ProtocolPacketException("Not enough data");
}
if (middleLength != 1) {
throw new OpenR66ProtocolPacketException("Not enough data");
}
final byte bheader = buf.readByte();
byte valid = buf.readByte();
String optional;
if (endLength > 0) {
optional = buf.toString(buf.readerIndex(), endLength, Charset.defaultCharset());
buf.skipBytes(endLength);
return new EndTransferPacket(bheader, valid, optional);
}
return new EndTransferPacket(bheader, valid);
}
@Override
public OFBsnPduTxRequest readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
// fixed value property version == 1
byte version = bb.readByte();
if (version != (byte) 0x1)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_10(1), got=" + version);
// fixed value property type == 4
byte type = bb.readByte();
if (type != (byte) 0x4)
throw new OFParseError("Wrong type: Expected=OFType.EXPERIMENTER(4), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
long xid = U32.f(bb.readInt());
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
// fixed value property subtype == 0x1fL
int subtype = bb.readInt();
if (subtype != 0x1f)
throw new OFParseError("Wrong subtype: Expected=0x1fL(0x1fL), got=" + subtype);
long txIntervalMs = U32.f(bb.readInt());
OFPort portNo = OFPort.read2Bytes(bb);
short slotNum = U8.f(bb.readByte());
// pad: 3 bytes
bb.skipBytes(3);
byte[] data = ChannelUtils.readBytes(bb, length - (bb.readerIndex() - start));
OFBsnPduTxRequestVer10 bsnPduTxRequestVer10 =
new OFBsnPduTxRequestVer10(xid, txIntervalMs, portNo, slotNum, data);
if (logger.isTraceEnabled()) logger.trace("readFrom - read={}", bsnPduTxRequestVer10);
return bsnPduTxRequestVer10;
}
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf)
throws Exception {
ChannelBuffer result = (ChannelBuffer) super.decode(ctx, channel, buf);
if (result != null) {
int index = result.indexOf(result.readerIndex(), result.writerIndex(), (byte) '$');
if (index == -1) {
return result;
} else {
result.skipBytes(index);
return result.readBytes(result.readableBytes());
}
}
return null;
}
@Override
public OFBsnStatsRequest<?> readFrom(ChannelBuffer bb) throws OFParseError {
if (bb.readableBytes() < MINIMUM_LENGTH) return null;
int start = bb.readerIndex();
// fixed value property version == 2
byte version = bb.readByte();
if (version != (byte) 0x2)
throw new OFParseError("Wrong version: Expected=OFVersion.OF_11(2), got=" + version);
// fixed value property type == 18
byte type = bb.readByte();
if (type != (byte) 0x12)
throw new OFParseError("Wrong type: Expected=OFType.STATS_REQUEST(18), got=" + type);
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
U32.f(bb.readInt());
// fixed value property statsType == 65535
short statsType = bb.readShort();
if (statsType != (short) 0xffff)
throw new OFParseError(
"Wrong statsType: Expected=OFStatsType.EXPERIMENTER(65535), got=" + statsType);
OFStatsRequestFlagsSerializerVer11.readFrom(bb);
// pad: 4 bytes
bb.skipBytes(4);
// fixed value property experimenter == 0x5c16c7L
int experimenter = bb.readInt();
if (experimenter != 0x5c16c7)
throw new OFParseError(
"Wrong experimenter: Expected=0x5c16c7L(0x5c16c7L), got=" + experimenter);
int subtype = bb.readInt();
bb.readerIndex(start);
switch (subtype) {
default:
throw new OFParseError(
"Unknown value for discriminator subtype of class OFBsnStatsRequestVer11: "
+ subtype);
}
}
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf)
throws Exception {
// Check minimum length
if (buf.readableBytes() < 10) {
return null;
}
// Trim end line
if (buf.getUnsignedShort(buf.readerIndex()) == 0x0d0a) {
buf.skipBytes(2);
}
// Read message
int length =
Integer.parseInt(buf.toString(buf.readerIndex() + 2, 2, Charset.defaultCharset()), 16);
if (length <= buf.readableBytes()) {
return buf.readBytes(length);
}
return null;
}
@Override
public OFBsnVlanCounterStatsEntry readFrom(ChannelBuffer bb) throws OFParseError {
int start = bb.readerIndex();
int length = U16.f(bb.readShort());
if (length < MINIMUM_LENGTH)
throw new OFParseError(
"Wrong length: Expected to be >= " + MINIMUM_LENGTH + ", was: " + length);
if (bb.readableBytes() + (bb.readerIndex() - start) < length) {
// Buffer does not have all data yet
bb.readerIndex(start);
return null;
}
if (logger.isTraceEnabled()) logger.trace("readFrom - length={}", length);
int vlanVid = U16.f(bb.readShort());
// pad: 4 bytes
bb.skipBytes(4);
List<U64> values = ChannelUtils.readList(bb, length - (bb.readerIndex() - start), U64.READER);
OFBsnVlanCounterStatsEntryVer13 bsnVlanCounterStatsEntryVer13 =
new OFBsnVlanCounterStatsEntryVer13(vlanVid, values);
if (logger.isTraceEnabled())
logger.trace("readFrom - read={}", bsnVlanCounterStatsEntryVer13);
return bsnVlanCounterStatsEntryVer13;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
int type = buf.readUnsignedShort();
buf.readUnsignedShort(); // length
if (type == MSG_IDENT || type == MSG_IDENT_FULL) {
buf.readUnsignedInt(); // id
int length = buf.readUnsignedShort();
buf.skipBytes(length);
length = buf.readUnsignedShort();
buf.skipBytes(length);
length = buf.readUnsignedShort();
String imei = buf.readBytes(length).toString(Charset.defaultCharset());
identify(imei, channel, remoteAddress);
} else if (hasDeviceId() && (type == MSG_POINT || type == MSG_ALARM || type == MSG_LOGMSG)) {
List<Position> positions = new LinkedList<>();
int recordCount = 1;
if (type == MSG_LOGMSG) {
recordCount = buf.readUnsignedShort();
}
for (int j = 0; j < recordCount; j++) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
if (type == MSG_LOGMSG) {
position.set(Event.KEY_ARCHIVE, true);
int subtype = buf.readUnsignedShort();
if (subtype == MSG_ALARM) {
position.set(Event.KEY_ALARM, true);
}
if (buf.readUnsignedShort() > buf.readableBytes()) {
lastIndex += 1;
break; // workaround for device bug
}
lastIndex = buf.readUnsignedInt();
position.set(Event.KEY_INDEX, lastIndex);
} else {
newIndex = buf.readUnsignedInt();
}
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.setLatitude(buf.readInt() * 180.0 / 0x7FFFFFFF);
position.setLongitude(buf.readInt() * 180.0 / 0x7FFFFFFF);
position.setSpeed(buf.readUnsignedInt() * 0.01);
position.setCourse(buf.readUnsignedShort() * 0.01);
position.setAltitude(buf.readUnsignedShort() * 0.01);
int satellites = buf.readUnsignedByte();
position.setValid(satellites >= 3);
position.set(Event.KEY_SATELLITES, satellites);
position.set(Event.KEY_GSM, buf.readUnsignedByte());
position.set(Event.KEY_ODOMETER, buf.readUnsignedInt());
long extraFlags = buf.readLong();
if (BitUtil.check(extraFlags, 0)) {
int count = buf.readUnsignedShort();
for (int i = 1; i <= count; i++) {
position.set(Event.PREFIX_ADC + i, buf.readUnsignedShort());
}
}
if (BitUtil.check(extraFlags, 1)) {
int size = buf.readUnsignedShort();
position.set("can", buf.toString(buf.readerIndex(), size, Charset.defaultCharset()));
buf.skipBytes(size);
}
if (BitUtil.check(extraFlags, 2)) {
position.set("passenger", ChannelBuffers.hexDump(buf.readBytes(buf.readUnsignedShort())));
}
if (type == MSG_ALARM) {
position.set(Event.KEY_ALARM, true);
byte[] response = {(byte) 0xC9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
channel.write(ChannelBuffers.wrappedBuffer(response));
}
buf.readUnsignedInt(); // crc
positions.add(position);
}
requestArchive(channel);
return positions;
}
return null;
}
@Override
protected Object decode(final ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer)
throws Exception {
if (buffer.readableBytes() < 5) {
return null;
}
int packetLength = 0;
// SSLv3 or TLS - Check ContentType
boolean tls;
switch (buffer.getUnsignedByte(buffer.readerIndex())) {
case 20: // change_cipher_spec
case 21: // alert
case 22: // handshake
case 23: // application_data
tls = true;
break;
default:
// SSLv2 or bad data
tls = false;
}
if (tls) {
// SSLv3 or TLS - Check ProtocolVersion
int majorVersion = buffer.getUnsignedByte(buffer.readerIndex() + 1);
if (majorVersion >= 3 && majorVersion < 10) {
// SSLv3 or TLS
packetLength = (buffer.getShort(buffer.readerIndex() + 3) & 0xFFFF) + 5;
if (packetLength <= 5) {
// Neither SSLv2 or TLSv1 (i.e. SSLv2 or bad data)
tls = false;
}
} else {
// Neither SSLv2 or TLSv1 (i.e. SSLv2 or bad data)
tls = false;
}
}
if (!tls) {
// SSLv2 or bad data - Check the version
boolean sslv2 = true;
int headerLength = (buffer.getUnsignedByte(buffer.readerIndex()) & 0x80) != 0 ? 2 : 3;
int majorVersion = buffer.getUnsignedByte(buffer.readerIndex() + headerLength + 1);
if (majorVersion >= 2 && majorVersion < 10) {
// SSLv2
if (headerLength == 2) {
packetLength = (buffer.getShort(buffer.readerIndex()) & 0x7FFF) + 2;
} else {
packetLength = (buffer.getShort(buffer.readerIndex()) & 0x3FFF) + 3;
}
if (packetLength <= headerLength) {
sslv2 = false;
}
} else {
sslv2 = false;
}
if (!sslv2) {
// Bad data - discard the buffer and raise an exception.
SSLException e =
new SSLException("not an SSL/TLS record: " + ChannelBuffers.hexDump(buffer));
buffer.skipBytes(buffer.readableBytes());
throw e;
}
}
assert packetLength > 0;
if (buffer.readableBytes() < packetLength) {
return null;
}
// We advance the buffer's readerIndex before calling unwrap() because
// unwrap() can trigger FrameDecoder call decode(), this method, recursively.
// The recursive call results in decoding the same packet twice if
// the readerIndex is advanced *after* decode().
//
// Here's an example:
// 1) An SSL packet is received from the wire.
// 2) SslHandler.decode() deciphers the packet and calls the user code.
// 3) The user closes the channel in the same thread.
// 4) The same thread triggers a channelDisconnected() event.
// 5) FrameDecoder.cleanup() is called, and it calls SslHandler.decode().
// 6) SslHandler.decode() will feed the same packet with what was
// deciphered at the step 2 again if the readerIndex was not advanced
// before calling the user code.
final int packetOffset = buffer.readerIndex();
buffer.skipBytes(packetLength);
return unwrap(ctx, channel, buffer, packetOffset, packetLength);
}
@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buffer)
throws Exception {
MemcachedRestRequest request = this.request;
if (request == null) {
buffer.markReaderIndex();
if (buffer.readableBytes() < 1) {
return null;
}
short magic = buffer.readUnsignedByte();
if (magic == 0x80) {
if (buffer.readableBytes() < 23) return null;
short opcode = buffer.readUnsignedByte();
short keyLength = buffer.readShort();
short extraLength = buffer.readUnsignedByte();
short dataType = buffer.readUnsignedByte(); // unused
short reserved = buffer.readShort(); // unused
int totalBodyLength = buffer.readInt();
int opaque = buffer.readInt();
long cas = buffer.readLong();
// we want the whole of totalBodyLength; otherwise, keep waiting.
if (buffer.readableBytes() < totalBodyLength) {
buffer.resetReaderIndex();
return null;
}
buffer.skipBytes(extraLength); // get extras, can be empty
if (keyLength != 0) {
byte[] key = new byte[keyLength];
buffer.readBytes(key);
String uri = Unicode.fromBytes(key);
if (opcode == 0x00) { // GET
request = new MemcachedRestRequest(RestRequest.Method.GET, uri, key, -1, true);
request.setOpaque(opaque);
return request;
} else if (opcode == 0x04) { // DELETE
request = new MemcachedRestRequest(RestRequest.Method.DELETE, uri, key, -1, true);
request.setOpaque(opaque);
return request;
} else if (opcode == 0x01) { // SET
// the remainder of the message -- that is, totalLength - (keyLength + extraLength)
// should be the payload
int size = totalBodyLength - keyLength - extraLength;
request = new MemcachedRestRequest(RestRequest.Method.POST, uri, key, size, true);
request.setOpaque(opaque);
byte[] data = new byte[size];
buffer.readBytes(data, 0, size);
request.setData(data);
return request;
}
} else if (opcode == 0x07) { // QUIT
channel.disconnect();
}
} else {
buffer.resetReaderIndex(); // reset to get to the first byte
// need to read a header
boolean done = false;
StringBuffer sb = this.sb;
int readableBytes = buffer.readableBytes();
for (int i = 0; i < readableBytes; i++) {
byte next = buffer.readByte();
if (next == CR) {
next = buffer.readByte();
if (next == LF) {
done = true;
break;
}
} else if (next == LF) {
done = true;
break;
} else {
sb.append((char) next);
}
}
if (!done) {
buffer.resetReaderIndex();
return null;
}
String[] args = lineSplit.split(sb);
// we read the text, clear it
sb.setLength(0);
String cmd = args[0];
String uri = args[1];
if ("get".equals(cmd)) {
request = new MemcachedRestRequest(RestRequest.Method.GET, uri, null, -1, false);
if (args.length > 3) {
request.setData(Unicode.fromStringAsBytes(args[2]));
}
return request;
} else if ("delete".equals(cmd)) {
request = new MemcachedRestRequest(RestRequest.Method.DELETE, uri, null, -1, false);
// if (args.length > 3) {
// request.setData(Unicode.fromStringAsBytes(args[2]));
// }
return request;
} else if ("set".equals(cmd)) {
this.request =
new MemcachedRestRequest(
RestRequest.Method.POST, uri, null, Integer.parseInt(args[4]), false);
buffer.markReaderIndex();
} else if ("quit".equals(cmd)) {
channel.disconnect();
}
}
} else {
if (buffer.readableBytes() < (request.getDataSize() + 2)) {
return null;
}
byte[] data = new byte[request.getDataSize()];
buffer.readBytes(data, 0, data.length);
byte next = buffer.readByte();
if (next == CR) {
next = buffer.readByte();
if (next == LF) {
request.setData(data);
// reset
this.request = null;
return request;
} else {
this.request = null;
throw new StreamCorruptedException("Expecting \r\n after data block");
}
} else {
this.request = null;
throw new StreamCorruptedException("Expecting \r\n after data block");
}
}
return null;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(4); // system code
int type = buf.readUnsignedByte();
long deviceUniqueId = buf.readUnsignedInt();
if (type != MSG_CLIENT_SERIAL) {
buf.readUnsignedShort(); // communication control
}
byte packetNumber = buf.readByte();
// Send reply
sendReply(channel, deviceUniqueId, packetNumber);
// Parse location
if (type == MSG_CLIENT_STATUS) {
Position position = new Position();
position.setProtocol(getProtocolName());
// Device identifier
if (!identify(String.valueOf(deviceUniqueId), channel)) {
return null;
}
position.setDeviceId(getDeviceId());
buf.readUnsignedByte(); // hardware version
buf.readUnsignedByte(); // software version
buf.readUnsignedByte(); // protocol version
// Status
position.set(Event.KEY_STATUS, buf.getUnsignedByte(buf.readerIndex()) & 0x0f);
int operator = (buf.readUnsignedByte() & 0xf0) << 4;
operator += buf.readUnsignedByte();
buf.readUnsignedByte(); // reason data
buf.readUnsignedByte(); // reason
buf.readUnsignedByte(); // mode
buf.readUnsignedInt(); // IO
operator <<= 8;
operator += buf.readUnsignedByte();
position.set("operator", operator);
buf.readUnsignedInt(); // ADC
buf.readUnsignedMedium(); // Odometer
buf.skipBytes(6); // multi-purpose data
buf.readUnsignedShort(); // gps fix
buf.readUnsignedByte(); // location status
buf.readUnsignedByte(); // mode 1
buf.readUnsignedByte(); // mode 2
position.setValid(buf.readUnsignedByte() >= 3); // satellites
// Location data
position.setLongitude(buf.readInt() / Math.PI * 180 / 100000000);
position.setLatitude(buf.readInt() / Math.PI * 180 / 100000000.0);
position.setAltitude(buf.readInt() * 0.01);
position.setSpeed(UnitsConverter.knotsFromMps(buf.readInt() * 0.01));
position.setCourse(buf.readUnsignedShort() / Math.PI * 180.0 / 1000.0);
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.SECOND, buf.readUnsignedByte());
time.set(Calendar.MINUTE, buf.readUnsignedByte());
time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte());
time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
time.set(Calendar.YEAR, buf.readUnsignedShort());
position.setTime(time.getTime());
return position;
}
return null;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(2); // header
int type = buf.readUnsignedByte();
buf.readUnsignedShort(); // size
if (type == MSG_ON_DEMAND
|| type == MSG_POSITION_UPLOAD
|| type == MSG_POSITION_REUPLOAD
|| type == MSG_ALARM
|| type == MSG_REPLY
|| type == MSG_PERIPHERAL) {
// Create new position
Position position = new Position();
position.setProtocol(getProtocolName());
// Device identification
if (!identify(readSerialNumber(buf), channel)) {
return null;
}
position.setDeviceId(getDeviceId());
// Date and time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, 2000 + ChannelBufferTools.readHexInteger(buf, 2));
time.set(Calendar.MONTH, ChannelBufferTools.readHexInteger(buf, 2) - 1);
time.set(Calendar.DAY_OF_MONTH, ChannelBufferTools.readHexInteger(buf, 2));
time.set(Calendar.HOUR_OF_DAY, ChannelBufferTools.readHexInteger(buf, 2));
time.set(Calendar.MINUTE, ChannelBufferTools.readHexInteger(buf, 2));
time.set(Calendar.SECOND, ChannelBufferTools.readHexInteger(buf, 2));
position.setTime(time.getTime());
// Location
position.setLatitude(ChannelBufferTools.readCoordinate(buf));
position.setLongitude(ChannelBufferTools.readCoordinate(buf));
position.setSpeed(UnitsConverter.knotsFromKph(ChannelBufferTools.readHexInteger(buf, 4)));
position.setCourse(ChannelBufferTools.readHexInteger(buf, 4));
// Flags
int flags = buf.readUnsignedByte();
position.setValid((flags & 0x80) != 0);
if (type == MSG_ALARM) {
buf.skipBytes(2);
} else {
// Odometer
position.set(Event.KEY_ODOMETER, buf.readUnsignedMedium());
// Status
buf.skipBytes(4);
// Other
buf.skipBytes(8);
}
// TODO: parse extra data
return position;
} else if (type == MSG_LOGIN && channel != null) {
buf.skipBytes(4); // serial number
buf.readByte(); // reserved
ChannelBuffer response = ChannelBuffers.dynamicBuffer();
response.writeByte(0x29);
response.writeByte(0x29); // header
response.writeByte(MSG_CONFIRMATION);
response.writeShort(5); // size
response.writeByte(buf.readUnsignedByte());
response.writeByte(type);
response.writeByte(0); // reserved
response.writeByte(Crc.xorChecksum(response.toByteBuffer()));
response.writeByte(0x0D); // ending
channel.write(response);
}
return null;
}