1 # RADIUS DAS extensions to pyrad
2 # Copyright (c) 2014, Jouni Malinen <j@w1.fi>
3 #
4 # This software may be distributed under the terms of the BSD license.
5 # See README for more details.
6 
7 import hashlib
8 import random
9 import struct
10 import pyrad.packet
11 
12 class DisconnectPacket(pyrad.packet.Packet):
13     def __init__(self, code=pyrad.packet.DisconnectRequest, id=None,
14                  secret=None, authenticator=None, **attributes):
15         pyrad.packet.Packet.__init__(self, code, id, secret, authenticator,
16                                      **attributes)
17 
18     def RequestPacket(self):
19         attr = b''
20         for code, datalst in sorted(self.items()):
21             for data in datalst:
22                 attr += self._PktEncodeAttribute(code, data)
23 
24         if self.id is None:
25             self.id = random.randrange(0, 256)
26 
27         header = struct.pack('!BBH', self.code, self.id, (20 + len(attr)))
28         self.authenticator = hashlib.md5(header[0:4] + 16 * b'\x00' + attr
29             + self.secret).digest()
30         return header + self.authenticator + attr
31 
32 class CoAPacket(pyrad.packet.Packet):
33     def __init__(self, code=pyrad.packet.CoARequest, id=None,
34                  secret=None, authenticator=None, **attributes):
35         pyrad.packet.Packet.__init__(self, code, id, secret, authenticator,
36                                      **attributes)
37 
38     def RequestPacket(self):
39         attr = self._PktEncodeAttributes()
40 
41         if self.id is None:
42             self.id = random.randrange(0, 256)
43 
44         header = struct.pack('!BBH', self.code, self.id, (20 + len(attr)))
45         self.authenticator = hashlib.md5(header[0:4] + 16 * b'\x00' + attr
46             + self.secret).digest()
47         return header + self.authenticator + attr
48