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-rw-r--r--scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py145
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diff --git a/scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py b/scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py
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+++ b/scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py
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+# $Id: ethernet.py 65 2010-03-26 02:53:51Z dugsong $
+# -*- coding: utf-8 -*-
+"""Ethernet II, LLC (802.3+802.2), LLC/SNAP, and Novell raw 802.3,
+with automatic 802.1q, MPLS, PPPoE, and Cisco ISL decapsulation."""
+
+import struct
+import dpkt
+import stp
+
+
+ETH_CRC_LEN = 4
+ETH_HDR_LEN = 14
+
+ETH_LEN_MIN = 64 # minimum frame length with CRC
+ETH_LEN_MAX = 1518 # maximum frame length with CRC
+
+ETH_MTU = (ETH_LEN_MAX - ETH_HDR_LEN - ETH_CRC_LEN)
+ETH_MIN = (ETH_LEN_MIN - ETH_HDR_LEN - ETH_CRC_LEN)
+
+# Ethernet payload types - http://standards.ieee.org/regauth/ethertype
+ETH_TYPE_PUP = 0x0200 # PUP protocol
+ETH_TYPE_IP = 0x0800 # IP protocol
+ETH_TYPE_ARP = 0x0806 # address resolution protocol
+ETH_TYPE_AOE = 0x88a2 # AoE protocol
+ETH_TYPE_CDP = 0x2000 # Cisco Discovery Protocol
+ETH_TYPE_DTP = 0x2004 # Cisco Dynamic Trunking Protocol
+ETH_TYPE_REVARP = 0x8035 # reverse addr resolution protocol
+ETH_TYPE_8021Q = 0x8100 # IEEE 802.1Q VLAN tagging
+ETH_TYPE_IPX = 0x8137 # Internetwork Packet Exchange
+ETH_TYPE_IP6 = 0x86DD # IPv6 protocol
+ETH_TYPE_PPP = 0x880B # PPP
+ETH_TYPE_MPLS = 0x8847 # MPLS
+ETH_TYPE_MPLS_MCAST = 0x8848 # MPLS Multicast
+ETH_TYPE_PPPoE_DISC = 0x8863 # PPP Over Ethernet Discovery Stage
+ETH_TYPE_PPPoE = 0x8864 # PPP Over Ethernet Session Stage
+ETH_TYPE_LLDP = 0x88CC # Link Layer Discovery Protocol
+
+# MPLS label stack fields
+MPLS_LABEL_MASK = 0xfffff000
+MPLS_QOS_MASK = 0x00000e00
+MPLS_TTL_MASK = 0x000000ff
+MPLS_LABEL_SHIFT = 12
+MPLS_QOS_SHIFT = 9
+MPLS_TTL_SHIFT = 0
+MPLS_STACK_BOTTOM = 0x0100
+
+
+class Ethernet(dpkt.Packet):
+ __hdr__ = (
+ ('dst', '6s', ''),
+ ('src', '6s', ''),
+ ('type', 'H', ETH_TYPE_IP)
+ )
+ _typesw = {}
+
+ def _unpack_data(self, buf):
+ if self.type == ETH_TYPE_8021Q:
+ self.tag, self.type = struct.unpack('>HH', buf[:4])
+ buf = buf[4:]
+ elif self.type == ETH_TYPE_MPLS or self.type == ETH_TYPE_MPLS_MCAST:
+ # XXX - skip labels (max # of labels is undefined, just use 24)
+ self.labels = []
+ for i in range(24):
+ entry = struct.unpack('>I', buf[i * 4:i * 4 + 4])[0]
+ label = ((entry & MPLS_LABEL_MASK) >> MPLS_LABEL_SHIFT,
+ (entry & MPLS_QOS_MASK) >> MPLS_QOS_SHIFT,
+ (entry & MPLS_TTL_MASK) >> MPLS_TTL_SHIFT)
+ self.labels.append(label)
+ if entry & MPLS_STACK_BOTTOM:
+ break
+ self.type = ETH_TYPE_IP
+ buf = buf[(i + 1) * 4:]
+ try:
+ self.data = self._typesw[self.type](buf)
+ setattr(self, self.data.__class__.__name__.lower(), self.data)
+ except (KeyError, dpkt.UnpackError):
+ self.data = buf
+
+ 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:])
+
+ @classmethod
+ def set_type(cls, t, pktclass):
+ cls._typesw[t] = pktclass
+
+ @classmethod
+ def get_type(cls, t):
+ return cls._typesw[t]
+
+
+# XXX - auto-load Ethernet dispatch table from ETH_TYPE_* definitions
+def __load_types():
+ g = globals()
+ for k, v in g.iteritems():
+ if k.startswith('ETH_TYPE_'):
+ name = k[9:]
+ modname = name.lower()
+ try:
+ mod = __import__(modname, g)
+ except ImportError:
+ continue
+ Ethernet.set_type(v, getattr(mod, name))
+
+
+if not Ethernet._typesw:
+ __load_types()
+
+
+def test_eth(): # TODO recheck this test
+ s = '\x00\xb0\xd0\xe1\x80r\x00\x11$\x8c\x11\xde\x86\xdd`\x00\x00\x00\x00(\x06@\xfe\x80\x00\x00\x00\x00\x00\x00\x02\x11$\xff\xfe\x8c\x11\xde\xfe\x80\x00\x00\x00\x00\x00\x00\x02\xb0\xd0\xff\xfe\xe1\x80r\xcd\xd3\x00\x16\xffP\xd7\x13\x00\x00\x00\x00\xa0\x02\xff\xffg\xd3\x00\x00\x02\x04\x05\xa0\x01\x03\x03\x00\x01\x01\x08\n}\x18:a\x00\x00\x00\x00'
+ # eth = Ethernet(s) # Variable eth is not used
+ Ethernet(s)
+
+
+if __name__ == '__main__':
+ test_eth()
+ print 'Tests Successful...' \ No newline at end of file