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Contents
#
# Routing Table
#
# Copyright (C) 2012 NEC Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
require "ipaddr"
class RoutingTable
ADDR_LEN = 32
def initialize route = []
@db = Array.new( ADDR_LEN + 1 ) { Hash.new }
route.each do | each |
add( each )
end
end
def add options
dest = IPAddr.new( options[ :destination ] )
masklen = options[ :masklen ]
prefix = dest.mask( masklen )
@db[ masklen ][ prefix.to_i ] = IPAddr.new( options[ :nexthop ] )
end
def delete options
dest = IPAddr.new( options[ :destination ] )
masklen = options[ :masklen ]
prefix = dest.mask( masklen )
@db[ masklen ].delete( prefix.to_i )
end
def lookup dest
( 0..ADDR_LEN ).reverse_each do | masklen |
prefix = dest.mask( masklen )
entry = @db[ masklen ][ prefix.to_i ]
return entry if entry
end
nil
end
end
### Local variables:
### mode: Ruby
### coding: utf-8-unix
### indent-tabs-mode: nil
### End:
Version data entries
10 entries across 10 versions & 1 rubygems