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# frozen_string_literal: true
module Facter
module Util
module Linux
class RoutingTable
class << self
ROUTE_TYPES = %w[anycast
unicast
broadcast
local
nat
unreachable
prohibit
blackhole
throw].freeze
def read_routing_table(logger)
ipv4_output = Facter::Core::Execution.execute('ip route show', logger: logger)
ipv6_output = Facter::Core::Execution.execute('ip -6 route show', logger: logger)
routes4 = parse_routes(ipv4_output, true)
routes6 = parse_routes(ipv6_output, false)
[routes4, routes6]
end
private
def parse_routes(output, ipv4_type)
routes = []
output.each_line do |line|
parts = line.split(' ').compact
next if parts.include?('linkdown')
delete_invalid_route_type(parts)
next if !ipv4_type && !parts[0].include?(':')
route = construct_route(parts)
routes << route unless route[:ip].nil?
end
routes.uniq
end
def delete_invalid_route_type(parts)
route_type = parts[0]
parts.delete_at(0) if ROUTE_TYPES.include?(route_type)
end
def construct_route(parts)
route = {}
dev_index = parts.find_index { |elem| elem == 'dev' }
src_index = parts.find_index { |elem| elem == 'src' }
route[:interface] = parts[dev_index + 1] if dev_index
route[:ip] = parts[src_index + 1] if src_index
route
end
end
end
end
end
end
Version data entries
34 entries across 34 versions & 1 rubygems