70 lines
2.2 KiB
Ruby
70 lines
2.2 KiB
Ruby
# This file implements the messages and methods for the NETLINK_ROUTE protocol.
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# Apart from a few utility functions for converting ifname to index and vice
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# versa, the logic is delegated to separate classes for each entity
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# (links, addresses etc)
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require 'netlink/nlsocket'
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require 'netlink/message'
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module Netlink
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module Route
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autoload :LinkHandler, 'netlink/route/link_handler'
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autoload :VlanHandler, 'netlink/route/vlan_handler'
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autoload :AddrHandler, 'netlink/route/addr_handler'
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autoload :RouteHandler, 'netlink/route/route_handler'
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# This class formats and receives messages using NETLINK_ROUTE protocol
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class Socket < NLSocket
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def initialize(opt={})
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super(opt.merge(:protocol => Netlink::NETLINK_ROUTE))
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end
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# Return a Netlink::Route::LinkHandler object for manipulating links
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def link
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@link ||= Netlink::Route::LinkHandler.new(self)
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end
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# Return a Netlink::Route::VlanHandler object for manipulating vlans
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def vlan
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@vlan ||= Netlink::Route::VlanHandler.new(self)
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end
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# Return a Netlink::Route::AddrHandler object for manipulating addresses
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def addr
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@addr ||= Netlink::Route::AddrHandler.new(self)
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end
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# Return a Netlink::Route::RT object for manipulating routes
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def route
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@route ||= Netlink::Route::RouteHandler.new(self)
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end
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# Convert an interface index into name string, or nil if the
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# index is nil or 0. Raises exception for unknown values.
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#
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# nl = Netlink::Route::Socket.new
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# nl.routes(:family=>Socket::AF_INET) do |route|
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# puts "iif=#{nl.ifname(route.iif)}"
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# puts "oif=#{nl.ifname(route.oif)}"
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# end
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def ifname(index)
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return nil if index.nil? || index == 0
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link[index].ifname
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end
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# Convert an interface name into index. Returns 0 for nil or empty
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# string. Otherwise raises an exception for unknown values.
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def index(name)
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case name
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when Integer
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name
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when nil, EMPTY_STRING
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0
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else
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link[name].index
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end
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end
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end
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end
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end
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