def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
if self.type > 1500:
# Ethernet II
self._unpack_data(self.data)
elif self.dst.startswith('\x01\x00\x0c\x00\x00') or \
self.dst.startswith('\x03\x00\x0c\x00\x00'):
# Cisco ISL
self.vlan = struct.unpack('>H', self.data[6:8])[0]
self.unpack(self.data[12:])
elif self.data.startswith('\xff\xff'):
# Novell "raw" 802.3
self.type = ETH_TYPE_IPX
self.data = self.ipx = self._typesw[ETH_TYPE_IPX](self.data[2:])
else:
# 802.2 LLC
self.dsap, self.ssap, self.ctl = struct.unpack(
'BBB', self.data[:3])
if self.data.startswith('\xaa\xaa'):
# SNAP
self.type = struct.unpack('>H', self.data[6:8])[0]
self._unpack_data(self.data[8:])
else:
# non-SNAP
dsap = ord(self.data[0])
if dsap == 0x06: # SAP_IP
self.data = self.ip = self._typesw[ETH_TYPE_IP](
self.data[3:])
elif dsap == 0x10 or dsap == 0xe0: # SAP_NETWARE{1,2}
self.data = self.ipx = self._typesw[ETH_TYPE_IPX](
self.data[3:])
elif dsap == 0x42: # SAP_STP
self.data = self.stp = stp.STP(self.data[3:])
def unpack(self, buf):
self.data = buf
if self.data.startswith('\xaa\xaa'):
# SNAP
self.type = struct.unpack('>H', self.data[6:8])[0]
self._unpack_data(self.data[8:])
else:
# non-SNAP
dsap = ord(self.data[0])
if dsap == 0x06: # SAP_IP
self.data = self.ip = self._typesw[ethernet.ETH_TYPE_IP](self.data[3:])
elif dsap == 0x10 or dsap == 0xe0: # SAP_NETWARE{1,2}
self.data = self.ipx = self._typesw[ethernet.ETH_TYPE_IPX](self.data[3:])
elif dsap == 0x42: # SAP_STP
self.data = self.stp = stp.STP(self.data[3:])
def unpack(self, buf):
from ethernet import Ethernet, ETH_TYPE_IP, ETH_TYPE_IPX
dpkt.Packet.unpack(self, buf)
if self.is_snap:
self.oui, self.type = struct.unpack('>IH', '\x00' + self.data[:5])
self.data = self.data[5:]
try:
self.data = Ethernet.get_type(self.type)(self.data)
setattr(self, self.data.__class__.__name__.lower(), self.data)
except (KeyError, dpkt.UnpackError):
pass
else:
# non-SNAP
if self.dsap == 0x06: # SAP_IP
self.data = self.ip = Ethernet.get_type(ETH_TYPE_IP)(self.data)
elif self.dsap == 0x10 or self.dsap == 0xe0: # SAP_NETWARE{1,2}
self.data = self.ipx = Ethernet.get_type(ETH_TYPE_IPX)(
self.data)
elif self.dsap == 0x42: # SAP_STP
self.data = self.stp = stp.STP(self.data)
