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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)
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