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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
"""
Generic IP protocol primitives
"""
# Copyright (c) 2008 Peter V. Saveliev
#
# This file is part of Connexion project.
#
# Connexion is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Connexion is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Connexion; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from ctypes import *
class GenericHeader (BigEndianStructure):
_fields_ = [
("len", c_uint16),
("saddr", c_uint64),
("daddr", c_uint64),
]
class GenericProtocol (object):
"""
Generic network protocol
"""
hdr = None
res = None
def __init__(self, hdr = GenericHeader):
self.hdr = hdr
self.init()
def inc(self,msg):
return self.post(self._inc(msg))
def _inc(self,msg):
"""
Incapsulate a message as a payload
"""
if msg is None:
class packet (Structure):
_pack_ = 1
_fields_ = [
("hdr", type(self.hdr)),
]
else:
class packet (Structure):
_pack_ = 1
_fields_ = [
("hdr", type(self.hdr)),
("payload", type(msg)),
]
x = packet()
x.hdr = self.hdr
if not msg is None:
x.payload = msg
return x
def post(self,msg):
return msg
def init(self):
pass
|
