diff options
Diffstat (limited to 'scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py')
| -rw-r--r-- | scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py | 145 |
1 files changed, 0 insertions, 145 deletions
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 deleted file mode 100644 index d8d8700f..00000000 --- a/scripts/external_libs/dpkt-1.8.6.2/dpkt/ethernet.py +++ /dev/null @@ -1,145 +0,0 @@ -# $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...'
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