@Override
public IPacket deserialize(byte[] data, int offset, int length) throws PacketParsingException {
ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
this.hardwareType = bb.getShort();
this.protocolType = bb.getShort();
this.hardwareAddressLength = bb.get();
this.protocolAddressLength = bb.get();
if (this.hardwareAddressLength != 6) {
String msg = "Incorrect ARP hardware address length: " + hardwareAddressLength;
throw new PacketParsingException(msg);
}
if (this.protocolAddressLength != 4) {
String msg = "Incorrect ARP protocol address length: " + protocolAddressLength;
throw new PacketParsingException(msg);
}
this.opCode = ArpOpcode.of(bb.getShort());
byte[] tmpMac = new byte[0xff & this.hardwareAddressLength];
byte[] tmpIp = new byte[0xff & this.protocolAddressLength];
bb.get(tmpMac, 0, this.hardwareAddressLength);
this.senderHardwareAddress = MacAddress.of(tmpMac);
bb.get(tmpIp, 0, this.protocolAddressLength);
this.senderProtocolAddress = IPv4Address.of(tmpIp);
bb.get(tmpMac, 0, this.hardwareAddressLength);
this.targetHardwareAddress = MacAddress.of(tmpMac);
bb.get(tmpIp, 0, this.protocolAddressLength);
this.targetProtocolAddress = IPv4Address.of(tmpIp);
return this;
}
private OFAction buildL3Modification(Instruction i) {
L3ModificationInstruction l3m = (L3ModificationInstruction) i;
ModIPInstruction ip;
Ip4Address ip4;
Ip6Address ip6;
OFOxm<?> oxm = null;
switch (l3m.subtype()) {
case IPV4_SRC:
ip = (ModIPInstruction) i;
ip4 = ip.ip().getIp4Address();
oxm = factory().oxms().ipv4Src(IPv4Address.of(ip4.toInt()));
break;
case IPV4_DST:
ip = (ModIPInstruction) i;
ip4 = ip.ip().getIp4Address();
oxm = factory().oxms().ipv4Dst(IPv4Address.of(ip4.toInt()));
break;
case IPV6_SRC:
ip = (ModIPInstruction) i;
ip6 = ip.ip().getIp6Address();
oxm = factory().oxms().ipv6Src(IPv6Address.of(ip6.toOctets()));
break;
case IPV6_DST:
ip = (ModIPInstruction) i;
ip6 = ip.ip().getIp6Address();
oxm = factory().oxms().ipv6Dst(IPv6Address.of(ip6.toOctets()));
break;
case IPV6_FLABEL:
ModIPv6FlowLabelInstruction flowLabelInstruction = (ModIPv6FlowLabelInstruction) i;
int flowLabel = flowLabelInstruction.flowLabel();
oxm = factory().oxms().ipv6Flabel(IPv6FlowLabel.of(flowLabel));
break;
case DEC_TTL:
return factory().actions().decNwTtl();
case TTL_IN:
return factory().actions().copyTtlIn();
case TTL_OUT:
return factory().actions().copyTtlOut();
default:
log.warn("Unimplemented action type {}.", l3m.subtype());
break;
}
if (oxm != null) {
return factory().actions().buildSetField().setField(oxm).build();
}
return null;
}
/**
* Constructor for a DHCPPool of DHCPBinding's. Each DHCPBinding object is initialized with a null
* MAC address and the lease is set to inactive (i.e. false).
*
* @param {@code byte[]} startingIPv4Address: The lowest IP address to lease.
* @param {@code integer} size: (startingIPv4Address + size) is the highest IP address to lease.
* @return none
*/
public DHCPPool(IPv4Address startingIPv4Address, int size, Logger log) {
this.log = log;
int IPv4AsInt = startingIPv4Address.getInt();
this.setPoolSize(size);
this.setPoolAvailability(size);
STARTING_ADDRESS = startingIPv4Address;
for (int i = 0; i < size; i++) {
DHCP_POOL.add(new DHCPBinding(IPv4Address.of(IPv4AsInt + i), UNASSIGNED_MAC));
}
}
/**
* Auxiliary method obtain the JSON fields and their values
*
* @param fmJson
* @param sv
*/
public static void jsonConverter(String fmJson, IStatsService sv) {
MappingJsonFactory f = new MappingJsonFactory();
JsonParser jp;
try {
try {
jp = f.createJsonParser(fmJson);
} catch (JsonParseException e) {
throw new IOException(e);
}
jp.nextToken();
if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
throw new IOException("Expected START_OBJECT");
}
while (jp.nextToken() != JsonToken.END_OBJECT) {
if (jp.getCurrentToken() != JsonToken.FIELD_NAME) {
throw new IOException("Expected FIELD_NAME");
}
String n = jp.getCurrentName();
jp.nextToken();
if (jp.getText().equals("")) {
continue;
}
// This assumes user having dpid info for involved switches
else if (n.equalsIgnoreCase("srcDpid")) {
try {
srcId = DatapathId.of(jp.getText());
} catch (NumberFormatException e) {
log.error("Unable to parse switch DPID: {}", jp.getText());
// TODO should return some error message via HTTP message
}
} else if (n.equalsIgnoreCase("dstDpid")) {
try {
dstId = DatapathId.of(jp.getText());
} catch (NumberFormatException e) {
log.error("Unable to parse switch DPID: {}", jp.getText());
// TODO should return some error message via HTTP message
}
} else if (n.equalsIgnoreCase("srcIp")) {
try {
srcIp = IPv4Address.of(jp.getText());
} catch (NumberFormatException e) {
log.error("Unable to parse IP srcIp: {}", jp.getText());
// TODO should return some error message via HTTP message
}
} else if (n.equalsIgnoreCase("dstIp")) {
try {
dstIp = IPv4Address.of(jp.getText());
} catch (NumberFormatException e) {
log.error("Unable to parse IP dstIp: {}", jp.getText());
// TODO should return some error message via HTTP message
}
} else if (n.equalsIgnoreCase("loss")) {
try {
loss = Integer.parseInt(jp.getText());
} catch (NumberFormatException e) {
log.error("Unable to parse loss: {}", jp.getText());
// TODO should return some error message via HTTP message
}
}
}
} catch (IOException e) {
log.error("Unable to parse JSON string: {}", e);
}
}
