private UnknownIpV6NeighborDiscoveryOption(byte[] rawData, int offset, int length)
throws IllegalRawDataException {
if (length < 2) {
StringBuilder sb = new StringBuilder(100);
sb.append("The raw data length must be more than 1. rawData: ")
.append(ByteArrays.toHexString(rawData, " "))
.append(", offset: ")
.append(offset)
.append(", length: ")
.append(length);
throw new IllegalRawDataException(sb.toString());
}
this.type = IpV6NeighborDiscoveryOptionType.getInstance(rawData[offset]);
this.length = rawData[1 + offset];
if (length < this.length * 8) {
StringBuilder sb = new StringBuilder(100);
sb.append("The raw data is too short to build this option(")
.append(this.length * 8)
.append("). data: ")
.append(ByteArrays.toHexString(rawData, " "))
.append(", offset: ")
.append(offset)
.append(", length: ")
.append(length);
throw new IllegalRawDataException(sb.toString());
}
this.data = ByteArrays.getSubArray(rawData, 2 + offset, this.length * 8 - 2);
}
private IcmpV6EchoReplyPacket(byte[] rawData) {
this.header = new IcmpV6EchoReplyHeader(rawData);
byte[] rawPayload =
ByteArrays.getSubArray(rawData, header.length(), rawData.length - header.length());
this.payload = UnknownPacket.newPacket(rawPayload);
}
private PcapNetworkInterface(pcap_if pif, boolean local) {
this.name = pif.name;
this.description = pif.description;
for (pcap_addr pcapAddr = pif.addresses; pcapAddr != null; pcapAddr = pcapAddr.next) {
if (pcapAddr.addr == null
&& pcapAddr.netmask == null
&& pcapAddr.broadaddr == null
&& pcapAddr.dstaddr == null) {
logger.warn("Empty pcap_addr on {} ({}). Ignore it.", name, description);
continue;
}
short sa_family =
pcapAddr.addr != null
? pcapAddr.addr.getSaFamily()
: pcapAddr.netmask != null
? pcapAddr.netmask.getSaFamily()
: pcapAddr.broadaddr != null
? pcapAddr.broadaddr.getSaFamily()
: pcapAddr.dstaddr != null
? pcapAddr.dstaddr.getSaFamily()
/* default */ : Inets.AF_UNSPEC; // Never get here.
if (sa_family == Inets.AF_INET) {
addresses.add(PcapIpV4Address.newInstance(pcapAddr, sa_family, name));
} else if (sa_family == Inets.AF_INET6) {
addresses.add(PcapIpV6Address.newInstance(pcapAddr, sa_family, name));
} else {
if (Platform.isLinux() && sa_family == Inets.AF_PACKET) {
sockaddr_ll sll = new sockaddr_ll(pcapAddr.addr.getPointer());
byte[] addr = sll.sll_addr;
int addrLength = sll.sll_halen & 0xFF;
if (addrLength == 6) {
linkLayerAddresses.add(ByteArrays.getMacAddress(addr, 0));
} else if (addr.length == 0) {
continue;
} else {
linkLayerAddresses.add(
LinkLayerAddress.getByAddress(ByteArrays.getSubArray(addr, 0, addrLength)));
}
} else if ((Platform.isMac() || Platform.isFreeBSD() || Platform.isOpenBSD())
|| Platform.iskFreeBSD() && sa_family == Inets.AF_LINK) {
sockaddr_dl sdl = new sockaddr_dl(pcapAddr.addr.getPointer());
byte[] addr = sdl.getAddress();
if (addr.length == 6) {
linkLayerAddresses.add(MacAddress.getByAddress(addr));
} else if (addr.length == 0) {
continue;
} else {
linkLayerAddresses.add(LinkLayerAddress.getByAddress(addr));
}
} else {
logger.warn("{} is not supported address family. Ignore it.", sa_family);
}
}
}
if (pif.flags == PCAP_IF_LOOPBACK) {
this.loopBack = true;
} else {
this.loopBack = false;
}
this.local = local;
}