mirror of https://github.com/aredn/aredn.git
116 lines
3.3 KiB
Lua
116 lines
3.3 KiB
Lua
--[[
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Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
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Copyright (C) 2021 Tim Wilkinson
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Original Perl Copyright (C) 2015 Conrad Lara
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See Contributors file for additional contributors
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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 version 3 of the License.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional Terms:
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Additional use restrictions exist on the AREDN(TM) trademark and logo.
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See AREDNLicense.txt for more info.
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Attributions to the AREDN Project must be retained in the source code.
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If importing this code into a new or existing project attribution
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to the AREDN project must be added to the source code.
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You must not misrepresent the origin of the material contained within.
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Modified versions must be modified to attribute to the original source
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and be marked in reasonable ways as differentiate it from the original
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version
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--]]
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function namechange()
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local count = 0
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while true
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do
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if not nixio.fs.stat("/tmp/namechange") and count < 12 then
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count = count + 1
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wait_for_ticks(5)
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else
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os.remove("/tmp/namechange")
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do_namechange()
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count = 0
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end
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end
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end
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function do_namechange()
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-- Do nothing if olsrd is not running
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if capture("pidof olsrd") == "" then
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return
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end
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local uptime = nixio.sysinfo().uptime
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local hosts = {}
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local history = {}
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-- Load the hosts file
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for line in io.lines("/var/run/hosts_olsr")
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do
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local v = line:splitWhiteSpace()
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local ip = v[1]
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local name = v[2]
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local originator = v[4]
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local mid = v[5]
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if ip and string.match(ip, "^%d") and originator and originator ~= "myself" and (ip == originator or mid == "(mid") then
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if hosts[ip] then
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hosts[ip] = hosts[ip] .. "/" .. name
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else
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hosts[ip] = name
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end
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end
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end
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-- Find the current neighbors
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local links = fetch_json("http://127.0.0.1:9090/links")
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if #links.links == 0 then
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return
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end
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for i, link in ipairs(links.links)
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do
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history[link.remoteIP] = { age = uptime, name = hosts[link.remoteIP] or "" }
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end
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-- load the strip the current history
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if nixio.fs.stat("/tmp/node.history") then
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for line in io.lines("/tmp/node.history")
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do
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local ip, age, name = line:match("^(%S*) (%d+) +(.*)$")
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if ip and age and not history[ip] and uptime - tonumber(age) < 86400 then
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history[ip] = { age = age, name = name }
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end
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end
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end
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-- write the new history
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local f = io.open("/tmp/node.history", "w")
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if f then
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for k,v in pairs(history)
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do
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f:write(k .. " " .. v.age .. " " .. v.name .. "\n")
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end
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f:close()
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end
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end
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return namechange
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