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# $Id: mrt.py 29 2007-01-26 02:29:07Z jon.oberheide $
# -*- coding: utf-8 -*-
"""Multi-threaded Routing Toolkit."""
import dpkt
import bgp
# Multi-threaded Routing Toolkit
# http://www.ietf.org/internet-drafts/draft-ietf-grow-mrt-03.txt
# MRT Types
NULL = 0
START = 1
DIE = 2
I_AM_DEAD = 3
PEER_DOWN = 4
BGP = 5 # Deprecated by BGP4MP
RIP = 6
IDRP = 7
RIPNG = 8
BGP4PLUS = 9 # Deprecated by BGP4MP
BGP4PLUS_01 = 10 # Deprecated by BGP4MP
OSPF = 11
TABLE_DUMP = 12
BGP4MP = 16
BGP4MP_ET = 17
ISIS = 32
ISIS_ET = 33
OSPF_ET = 64
# BGP4MP Subtypes
BGP4MP_STATE_CHANGE = 0
BGP4MP_MESSAGE = 1
BGP4MP_ENTRY = 2
BGP4MP_SNAPSHOT = 3
BGP4MP_MESSAGE_32BIT_AS = 4
# Address Family Types
AFI_IPv4 = 1
AFI_IPv6 = 2
class MRTHeader(dpkt.Packet):
__hdr__ = (
('ts', 'I', 0),
('type', 'H', 0),
('subtype', 'H', 0),
('len', 'I', 0)
)
class TableDump(dpkt.Packet):
__hdr__ = (
('view', 'H', 0),
('seq', 'H', 0),
('prefix', 'I', 0),
('prefix_len', 'B', 0),
('status', 'B', 1),
('originated_ts', 'I', 0),
('peer_ip', 'I', 0),
('peer_as', 'H', 0),
('attr_len', 'H', 0)
)
def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
plen = self.attr_len
l = []
while plen > 0:
attr = bgp.BGP.Update.Attribute(self.data)
self.data = self.data[len(attr):]
plen -= len(attr)
l.append(attr)
self.attributes = l
class BGP4MPMessage(dpkt.Packet):
__hdr__ = (
('src_as', 'H', 0),
('dst_as', 'H', 0),
('intf', 'H', 0),
('family', 'H', AFI_IPv4),
('src_ip', 'I', 0),
('dst_ip', 'I', 0)
)
class BGP4MPMessage_32(dpkt.Packet):
__hdr__ = (
('src_as', 'I', 0),
('dst_as', 'I', 0),
('intf', 'H', 0),
('family', 'H', AFI_IPv4),
('src_ip', 'I', 0),
('dst_ip', 'I', 0)
)
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