File: ospf.py

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# $Id: ospf.py 23 2006-11-08 15:45:33Z dugsong $

"""Open Shortest Path First."""

import dpkt

AUTH_NONE = 0
AUTH_PASSWORD = 1
AUTH_CRYPTO = 2

class OSPF(dpkt.Packet):
    __hdr__ = (
        ('v', 'B', 0),
        ('type', 'B', 0),
        ('len', 'H', 0),
        ('router', 'I', 0),
        ('area', 'I', 0),
        ('sum', 'H', 0),
        ('atype', 'H', 0),
        ('auth', '8s', '')
        )
    def __str__(self):
        if not self.sum:
            self.sum = dpkt.in_cksum(dpkt.Packet.__str__(self))
        return dpkt.Packet.__str__(self)