class Ether(Packet):
name = "Ethernet"
fields_desc = [
DestMACField("dst"),
SourceMACField("src"),
XShortEnumField("type", 0x9000, ETHER_TYPES)
]
def hashret(self):
return struct.pack("H", self.type) + self.payload.hashret()
def answers(self, other):
if isinstance(other, Ether):
if self.type == other.type:
return self.payload.answers(other.payload)
return 0
def mysummary(self):
return self.sprintf("%src% > %dst% (%type%)")
@classmethod
def dispatch_hook(cls, _pkt=None, *args, **kargs):
if _pkt and len(_pkt) >= 14:
if struct.unpack("!H", _pkt[12:14])[0] <= 1500:
return Dot3
return cls
def guess_payload_class(self, payload):
if self.type == 2054 and len(payload) > 4:
if payload[2:4] == "\x99\x99":
return YOARP
elif payload[2:4] == "\x08\x00":
return ARP
return Packet.guess_payload_class(self, payload)
class NBNSNodeStatusResponse(Packet):
name = "NBNS Node Status Response"
fields_desc = [
NetBIOSNameField("RR_NAME", "windows"),
ShortEnumField("SUFFIX", 0x4141, _NETBIOS_SUFFIXES),
ByteField("NULL", 0),
ShortEnumField("RR_TYPE", 0x21, _NETBIOS_QRTYPES),
ShortEnumField("RR_CLASS", 1, _NETBIOS_QRCLASS),
IntField("TTL", 0),
ShortField("RDLENGTH", 83),
FieldLenField("NUM_NAMES", None, fmt="B", count_of="NODE_NAME"),
PacketListField("NODE_NAME", [NBNSNodeStatusResponseService()],
NBNSNodeStatusResponseService,
count_from=lambda pkt: pkt.NUM_NAMES),
SourceMACField("MAC_ADDRESS"),
BitField("STATISTICS", 0, 57 * 8)
]
class MACsecSCI(Packet):
"""
Secure Channel Identifier.
"""
#########################################################################
#
# IEEE 802.1AE-2006 standard
# Section 9.9
#########################################################################
#
name = "SCI"
fields_desc = [
SourceMACField("system_identifier"),
ShortField("port_identifier", 0)
]
def extract_padding(self, s):
return "", s
class NBNSNodeStatusResponseEnd(Packet):
name = "NBNS Node Status Response"
fields_desc = [
SourceMACField("MAC_ADDRESS"),
BitField("STATISTICS", 0, 57 * 8)
]