1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
# $Id: pppoe.py 23 2006-11-08 15:45:33Z dugsong $
"""PPP-over-Ethernet."""
import dpkt, ppp
# RFC 2516 codes
PPPoE_PADI = 0x09
PPPoE_PADO = 0x07
PPPoE_PADR = 0x19
PPPoE_PADS = 0x65
PPPoE_PADT = 0xA7
PPPoE_SESSION = 0x00
class PPPoE(dpkt.Packet):
__hdr__ = (
('v_type', 'B', 0x11),
('code', 'B', 0),
('session', 'H', 0),
('len', 'H', 0) # payload length
)
def _get_v(self): return self.v_type >> 4
def _set_v(self, v): self.v_type = (v << 4) | (self.v_type & 0xf)
v = property(_get_v, _set_v)
def _get_type(self): return self.v_type & 0xf
def _set_type(self, t): self.v_type = (self.v_type & 0xf0) | t
type = property(_get_type, _set_type)
def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
try:
if self.code == 0:
self.data = self.ppp = ppp.PPP(self.data)
except dpkt.UnpackError:
pass
# XXX - TODO TLVs, etc.
|
