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-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Copyright 2008 Jo-Philipp Wich <jow@openwrt.org>
-- Copyright 2013 Manuel Munz <freifunk at somakoma dot de>
-- Copyright 2014 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
-- Licensed to the public under the Apache License 2.0.
module("luci.controller.ddns", package.seeall)
local NX = require "nixio"
local NXFS = require "nixio.fs"
local DISP = require "luci.dispatcher"
local HTTP = require "luci.http"
local UCI = require "luci.model.uci"
local SYS = require "luci.sys"
local DDNS = require "luci.tools.ddns" -- ddns multiused functions
local UTIL = require "luci.util"
DDNS_MIN = "2.1.0-2" -- minimum version of service required
function index()
local nxfs = require "nixio.fs" -- global definitions not available
local sys = require "luci.sys" -- in function index()
local ddns = require "luci.tools.ddns" -- ddns multiused functions
local verinst = ddns.ipkg_ver_installed("ddns-scripts")
local verok = ddns.ipkg_ver_compare(verinst, ">=", "2.0.0-0")
-- do NOT start it not ddns-scripts version 2.x
if not verok then
return
end
-- no config create an empty one
if not nxfs.access("/etc/config/ddns") then
nxfs.writefile("/etc/config/ddns", "")
end
entry( {"admin", "services", "ddns"}, cbi("ddns/overview"), _("Dynamic DNS"), 59)
entry( {"admin", "services", "ddns", "detail"}, cbi("ddns/detail"), nil ).leaf = true
entry( {"admin", "services", "ddns", "hints"}, cbi("ddns/hints",
{hideapplybtn=true, hidesavebtn=true, hideresetbtn=true}), nil ).leaf = true
entry( {"admin", "services", "ddns", "logview"}, call("logread") ).leaf = true
entry( {"admin", "services", "ddns", "startstop"}, call("startstop") ).leaf = true
entry( {"admin", "services", "ddns", "status"}, call("status") ).leaf = true
end
-- function to read all sections status and return data array
local function _get_status()
local uci = UCI.cursor()
local service = SYS.init.enabled("ddns") and 1 or 0
local url_start = DISP.build_url("admin", "system", "startup")
local data = {} -- Array to transfer data to javascript
data[#data+1] = {
enabled = service, -- service enabled
url_up = url_start, -- link to enable DDS (System-Startup)
}
uci:foreach("ddns", "service", function (s)
-- Get section we are looking at
-- and enabled state
local section = s[".name"]
local enabled = tonumber(s["enabled"]) or 0
local datelast = "_empty_" -- formatted date of last update
local datenext = "_empty_" -- formatted date of next update
-- get force seconds
local force_seconds = DDNS.calc_seconds(
tonumber(s["force_interval"]) or 72 ,
s["force_unit"] or "hours" )
-- get/validate pid and last update
local pid = DDNS.get_pid(section)
local uptime = SYS.uptime()
local lasttime = DDNS.get_lastupd(section)
if lasttime > uptime then -- /var might not be linked to /tmp
lasttime = 0 -- and/or not cleared on reboot
end
-- no last update happen
if lasttime == 0 then
datelast = "_never_"
-- we read last update
else
-- calc last update
-- sys.epoch - sys uptime + lastupdate(uptime)
local epoch = os.time() - uptime + lasttime
-- use linux date to convert epoch
datelast = DDNS.epoch2date(epoch)
-- calc and fill next update
datenext = DDNS.epoch2date(epoch + force_seconds)
end
-- process running but update needs to happen
-- problems it force_seconds > uptime
force_seconds = (force_seconds > uptime) and uptime or force_seconds
if pid > 0 and ( lasttime + force_seconds - uptime ) <= 0 then
datenext = "_verify_"
-- run once
elseif force_seconds == 0 then
datenext = "_runonce_"
-- no process running and NOT enabled
elseif pid == 0 and enabled == 0 then
datenext = "_disabled_"
-- no process running and NOT
elseif pid == 0 and enabled ~= 0 then
datenext = "_stopped_"
end
-- get/set monitored interface and IP version
local iface = s["interface"] or "_nonet_"
local use_ipv6 = tonumber(s["use_ipv6"]) or 0
if iface ~= "_nonet_" then
local ipv = (use_ipv6 == 1) and "IPv6" or "IPv4"
iface = ipv .. " / " .. iface
end
-- try to get registered IP
local domain = s["domain"] or "_nodomain_"
local dnsserver = s["dns_server"] or ""
local force_ipversion = tonumber(s["force_ipversion"] or 0)
local force_dnstcp = tonumber(s["force_dnstcp"] or 0)
local command = [[/usr/lib/ddns/dynamic_dns_lucihelper.sh]]
command = command .. [[ get_registered_ip ]] .. domain .. [[ ]] .. use_ipv6 ..
[[ ]] .. force_ipversion .. [[ ]] .. force_dnstcp .. [[ ]] .. dnsserver
local reg_ip = SYS.exec(command)
if reg_ip == "" then
reg_ip = "_nodata_"
end
-- fill transfer array
data[#data+1] = {
section = section,
enabled = enabled,
iface = iface,
domain = domain,
reg_ip = reg_ip,
pid = pid,
datelast = datelast,
datenext = datenext
}
end)
uci:unload("ddns")
return data
end
-- called by XHR.get from detail_logview.htm
function logread(section)
-- read application settings
local uci = UCI.cursor()
local log_dir = uci:get("ddns", "global", "log_dir") or "/var/log/ddns"
local lfile=log_dir .. "/" .. section .. ".log"
local ldata=NXFS.readfile(lfile)
if not ldata or #ldata == 0 then
ldata="_nodata_"
end
uci:unload("ddns")
HTTP.write(ldata)
end
-- called by XHR.get from overview_status.htm
function startstop(section, enabled)
local uci = UCI.cursor()
local data = {} -- Array to transfer data to javascript
-- if process running we want to stop and return
local pid = DDNS.get_pid(section)
if pid > 0 then
local tmp = NX.kill(pid, 15) -- terminate
NX.nanosleep(2) -- 2 second "show time"
-- status changed so return full status
data = _get_status()
HTTP.prepare_content("application/json")
HTTP.write_json(data)
return
end
-- read uncommitted changes
-- we don't save and commit data from other section or other options
-- only enabled will be done
local exec = true
local changed = uci:changes("ddns")
for k_config, v_section in pairs(changed) do
-- security check because uci.changes only gets our config
if k_config ~= "ddns" then
exec = false
break
end
for k_section, v_option in pairs(v_section) do
-- check if only section of button was changed
if k_section ~= section then
exec = false
break
end
for k_option, v_value in pairs(v_option) do
-- check if only enabled was changed
if k_option ~= "enabled" then
exec = false
break
end
end
end
end
-- we can not execute because other
-- uncommitted changes pending, so exit here
if not exec then
HTTP.write("_uncommitted_")
return
end
-- save enable state
uci:set("ddns", section, "enabled", ( (enabled == "true") and "1" or "0") )
uci:save("ddns")
uci:commit("ddns")
uci:unload("ddns")
-- start dynamic_dns_updater.sh script
os.execute ([[/usr/lib/ddns/dynamic_dns_updater.sh %s 0 > /dev/null 2>&1 &]] % section)
NX.nanosleep(3) -- 3 seconds "show time"
-- status changed so return full status
data = _get_status()
HTTP.prepare_content("application/json")
HTTP.write_json(data)
end
-- called by XHR.poll from overview_status.htm
function status()
local data = _get_status()
HTTP.prepare_content("application/json")
HTTP.write_json(data)
end
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