--[[ Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks Copyright (C) 2021 Tim Wilkinson Original Perl Copyright (C) 2015 Conrad Lara See Contributors file for additional contributors This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation version 3 of the License. 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, see . Additional Terms: Additional use restrictions exist on the AREDN(TM) trademark and logo. See AREDNLicense.txt for more info. Attributions to the AREDN Project must be retained in the source code. If importing this code into a new or existing project attribution to the AREDN project must be added to the source code. You must not misrepresent the origin of the material contained within. Modified versions must be modified to attribute to the original source and be marked in reasonable ways as differentiate it from the original version --]] function namechange() local count = 0 while true do local exists = nixio.fs.stat("/tmp/namechange") if not exists and count < 12 then count = count + 1 wait_for_ticks(5) else if exists then os.remove("/tmp/namechange") end do_namechange() if not exists then dns_update() end count = 0 end end end function do_namechange() -- Do nothing if olsrd is not running if capture("pidof olsrd") == "" then return end local uptime = nixio.sysinfo().uptime local hosts = {} local history = {} -- Load the hosts file for line in io.lines("/var/run/hosts_olsr.stable") do local v = line:splitWhiteSpace() local ip = v[1] local name = v[2] local originator = v[4] local mid = v[5] if ip and string.match(ip, "^%d") and originator and originator ~= "myself" and (ip == originator or mid == "(mid") then if hosts[ip] then hosts[ip] = hosts[ip] .. "/" .. name else hosts[ip] = name end end end -- Find the current neighbors local raw = io.popen("/usr/bin/wget -O - http://127.0.0.1:9090/links 2> /dev/null") local links = luci.jsonc.parse(raw:read("*a")) raw:close() if not (links and links.links and #links.links > 0) then return end for i, link in ipairs(links.links) do history[link.remoteIP] = { age = uptime, name = hosts[link.remoteIP] or "" } end -- load the strip the current history if nixio.fs.stat("/tmp/node.history") then for line in io.lines("/tmp/node.history") do local ip, age, name = line:match("^(%S*) (%d+) +(.*)$") if ip and age and not history[ip] and uptime - tonumber(age) < 86400 then history[ip] = { age = age, name = name } end end end -- write the new history local f = io.open("/tmp/node.history", "w") if f then for k,v in pairs(history) do f:write(k .. " " .. v.age .. " " .. v.name .. "\n") end f:close() end end function dns_update() local pid = capture("pidof dnsmasq") if pid ~= "" then nixio.kill(tonumber(pid), 1) end end return namechange