21c9c7e21c
Unfortunately, there is a bug in lgi library causing the incorrect values being returned and the example crashes. I am going to send a patch to lgi to fix the issues.
161 lines
4.3 KiB
Lua
Executable File
161 lines
4.3 KiB
Lua
Executable File
#!/usr/bin/env lua
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-- -*- Mode: Lua; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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-- vim: ft=lua ts=2 sts=2 sw=2 et ai
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 2 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License along
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-- with this program; if not, write to the Free Software Foundation, Inc.,
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-- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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--
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-- Copyright 2015 Red Hat, Inc.
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--
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--
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-- This example shows how to get addresses, routes and DNS information from
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-- NMIP4Config and NMIP6Config (got out of NMDevice)
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-- The example uses libnm library using GObject introspection via Lua lgi module.
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-- Most distribution ship the module as lua-lgi package.
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-- libnm guide: https://developer.gnome.org/libnm/1.0/
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-- Lua-lgi guide: https://github.com/pavouk/lgi/blob/master/docs/guide.md
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--
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local lgi = require 'lgi'
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local NM = lgi.NM
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AF_INET = 2
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AF_INET6 = 10
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function to_str(table)
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local val = ""
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for i, str in ipairs(table) do
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local delim = i == #table and "" or ", "
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val = val .. str .. delim
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end
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return val
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end
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function show_addresses(dev, family)
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if (family == AF_INET) then ip_cfg = dev:get_ip4_config()
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else ip_cfg = dev:get_ip6_config() end
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if not ip_cfg then print("None") return end
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local nm_addresses = ip_cfg:get_addresses()
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if #nm_addresses == 0 then print("None") return end
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for _, nm_address in ipairs(nm_addresses) do
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addr = nm_address:get_address()
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prefix = nm_address:get_prefix()
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print(string.format("%s/%d", addr, prefix))
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end
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end
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function show_gateway(dev, family)
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if (family == AF_INET) then ip_cfg = dev:get_ip4_config()
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else ip_cfg = dev:get_ip6_config() end
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if not ip_cfg then print("None") return end
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gw = ip_cfg:get_gateway()
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print(gw)
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end
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function show_routes(dev, family)
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if (family == AF_INET) then ip_cfg = dev:get_ip4_config()
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else ip_cfg = dev:get_ip6_config() end
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if not ip_cfg then print("None") return end
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local nm_routes = ip_cfg:get_routes()
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if #nm_routes == 0 then print("None") return end
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for _, nm_route in ipairs(nm_routes) do
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dest = nm_route:get_dest()
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prefix = nm_route:get_prefix()
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next_hop = nm_route:get_next_hop()
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metric = nm_route:get_metric()
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print(string.format("%s/%d %s %d", dest, prefix, next_hop, metric))
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end
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end
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function show_dns(dev, family)
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if (family == AF_INET) then ip_cfg = dev:get_ip4_config()
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else ip_cfg = dev:get_ip6_config() end
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if not ip_cfg then print("None") return end
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print ("Nameservers:", to_str(ip_cfg:get_nameservers()))
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print ("Domains: ", to_str(ip_cfg:get_domains()))
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print ("Searches: ", to_str(ip_cfg:get_searches()))
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if (family == AF_INET) then
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print ("WINS: ", to_str(ip_cfg:get_wins_servers()))
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end
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end
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---------------------------
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-- Main code starts here --
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---------------------------
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if not arg[1] or arg[2] then
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io.stderr:write(string.format("Usage: %s <interface>\n", arg[0]))
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os.exit(1)
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end
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local dev_iface = arg[1]
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local c = NM.Client.new()
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local device = c:get_device_by_iface(dev_iface)
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if not device then
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io.stderr:write(string.format("Device '%s' not found\n", dev_iface))
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os.exit(1)
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end
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local header = string.format("Device: %s - %s", dev_iface, device:get_device_type())
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print(header)
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print(string.rep("=", #header))
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print("IPv4 addresses:")
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print("---------------")
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show_addresses(device, AF_INET)
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print("")
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print("IPv4 gateway:")
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print("-------------")
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show_gateway(device, AF_INET)
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print("")
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print("IPv4 routes:")
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print("------------")
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show_routes(device, AF_INET)
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print("")
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print "IPv6 addresses:"
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print("---------------")
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show_addresses(device, AF_INET6)
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print("")
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print("IPv6 gateway:")
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print("-------------")
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show_gateway(device, AF_INET6)
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print("")
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print "IPv6 routes:"
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print("------------")
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show_routes(device, AF_INET6)
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print("")
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print "IPv4 DNS:"
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print("---------")
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show_dns(device, AF_INET)
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print("")
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print "IPv6 DNS:"
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print("---------")
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show_dns(device, AF_INET6)
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print("")
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