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-- Authors: Guillermo Bonvehí <gbonvehi@gmail.com>
-- License: Public domain
--
-- statusd_inetaddr2.lua -- show IP address for Notion's statusbar
-- Shows assigned IP address for each configured interface.
-- Uses `ip addr show` or `ifconfig` to fetch current iface's data
-- Configuration:
-- `template' string controls how the output will be formated. It may
-- contain the following keywords:
-- PLACEHOLDER DESCRIPTION EXAMPLE
-- ----------- ----------- -------
-- iface interface eth0
-- ipv4 IPv4 address 192.168.1.1
-- ipv6 IPv6 address fe80::208:54ff:fe68:7e2c
-- `interfaces' table contains the interfaces to be monitored.
-- `separator' is placed between the entries in the output.
-- `interval' is the refresh timer (in milliseconds).
-- `mode` use `ip` for `ip addr show` or `ifconfig` for `ifconfig`
-- This software is in the public domain.
--------------------------------------------------------------------------------
local defaults = {
template = "[%iface %ipv4 %ipv6]",
interfaces = { "eth0", "wlan0" },
separator = " ",
interval = 10*1000,
mode = "ip",
mode_path_check = true,
}
local settings = table.join(statusd.get_config("inetaddr2"), defaults)
local inetaddr2_timer
local mode_paths = {}
local mode_path = ""
local function file_exists(name)
local f=io.open(name,"r")
if f~=nil then io.close(f) return true else return false end
end
local function get_tool_output(command)
local f = io.popen(command)
if not f then
return nil
end
lines = f:read("*a")
f:close()
return lines
end
local function get_ip_address_using__ifconfig(iface, lines)
local r_table = {}
local inet4_match = "inet "
local inet6_match = "inet6 "
local inet4_addr = "none"
local inet6_addr = "none"
lines = lines or get_tool_output("LC_ALL=C " .. mode_path .. " " .. iface .. " 2>/dev/null")
for line in lines:gmatch("([^\n]*)\n?") do
if (string.match(line, inet4_match)) then
inet4_addr = line:match("inet (%d+%.%d+%.%d+%.%d+)") or "none"
elseif (string.match(line, inet6_match)) then
inet6_addr = line:match("inet6 ([a-fA-F0-9%:]+) ") or "none"
end
end
r_table["iface"] = iface
r_table["ipv4"] = inet4_addr
r_table["ipv6"] = inet6_addr
return r_table
end
local function get_ip_address_using__ip_addr(iface, lines)
local r_table = {}
local inet4_match = "inet "
local inet6_match = "inet6 "
local inet4_addr = "none"
local inet6_addr = "none"
lines = lines or get_tool_output("LC_ALL=C " .. mode_path .. " addr show " .. iface .. " 2>/dev/null")
for line in lines:gmatch("([^\n]*)\n?") do
if (string.match(line, inet4_match)) then
inet4_addr = line:match("inet (%d+%.%d+%.%d+%.%d+)") or "none"
elseif (string.match(line, inet6_match)) then
inet6_addr = line:match("inet6 ([a-fA-F0-9%:]+)/") or "none"
end
end
r_table["iface"] = iface
r_table["ipv4"] = inet4_addr
r_table["ipv6"] = inet6_addr
return r_table
end
local function get_inetaddr_ifcfg(mode, iface)
if mode == "ifconfig" then
return get_ip_address_using__ifconfig(iface)
elseif mode == "ip" then
return get_ip_address_using__ip_addr(iface)
end
end
local function update_inetaddr()
local ifaces_info = {}
for i=1, #settings.interfaces do
local iface = settings.interfaces[i]
local parsed_ifcfg = get_inetaddr_ifcfg(settings.mode, iface)
if (parsed_ifcfg == nil) then
else
local s = string.gsub(settings.template, "%%(%w+)",
function (arg)
if (parsed_ifcfg[arg] ~= nil) then
return parsed_ifcfg[arg]
end
return nil
end)
ifaces_info[i] = s
end
end
statusd.inform("inetaddr2", table.concat(ifaces_info, settings.separator))
inetaddr2_timer:set(settings.interval, update_inetaddr)
end
if settings.mode == "ip" then
mode_paths = {"/sbin/ip", "/usr/sbin/ip", "/bin/ip", "/usr/bin/ip"}
elseif settings.mode == "ifconfig" then
mode_paths = {"/sbin/ifconfig", "/usr/sbin/ifconfig", "/bin/ifconfig", "/usr/bin/ifconfig"}
end
for i = 1, #mode_paths do
if file_exists(mode_paths[i]) then
mode_path = mode_paths[i]
break
end
end
if (settings.mode_path_check == true) then
assert(mode_path ~= "", "Could not find a suitable binary for " .. settings.mode)
end
inetaddr2_timer = statusd.create_timer()
update_inetaddr()
statusd_inetaddr2_export = {
get_ip_address_using__ifconfig = get_ip_address_using__ifconfig,
get_ip_address_using__ip_addr = get_ip_address_using__ip_addr,
}
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