File: pim.py

package info (click to toggle)
python-dpkt 1.6%2Bsvn54-1
  • links: PTS
  • area: main
  • in suites: jessie, jessie-kfreebsd, squeeze, wheezy
  • size: 448 kB
  • ctags: 1,950
  • sloc: python: 5,136; makefile: 71
file content (24 lines) | stat: -rw-r--r-- 705 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
# $Id: pim.py 23 2006-11-08 15:45:33Z dugsong $

"""Protocol Independent Multicast."""

import dpkt

class PIM(dpkt.Packet):
    __hdr__ = (
        ('v_type', 'B', 0x20),
        ('rsvd', 'B', 0),
        ('sum', 'H', 0)
        )
    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, type): self.v_type = (self.v_type & 0xf0) | type
    type = property(_get_type, _set_type)

    def __str__(self):
        if not self.sum:
            self.sum = dpkt.in_cksum(dpkt.Packet.__str__(self))
        return dpkt.Packet.__str__(self)