luci.app-ddns: Update to 2.4.9-1

Read registered IP from file, updated by ddns-scripts.
Only read from DNS if file does not exist or outdated (check_interval).
Require ddns-scripts v 2.7.7

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

3 files changed, 65 insertions, 34 deletions

diff --git a/applications/luci-app-ddns/luasrc/controller/ddns.lua b/applications/luci-app-ddns/luasrc/controller/ddns.lua
index 1dfa625541..3d31e4e0b6 100755
--- a/applications/luci-app-ddns/luasrc/controller/ddns.lua
+++ b/applications/luci-app-ddns/luasrc/controller/ddns.lua
@@ -1,7 +1,7 @@
 -- 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 2014-2017 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
+-- Copyright 2014-2018 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)
@@ -20,11 +20,11 @@ local DDNS = require "luci.tools.ddns"		-- ddns multiused functions
 luci_helper = "/usr/lib/ddns/dynamic_dns_lucihelper.sh"
 
 local srv_name    = "ddns-scripts"
-local srv_ver_min = "2.7.6"			-- minimum version of service required
+local srv_ver_min = "2.7.7"			-- minimum version of service required
 local srv_ver_cmd = luci_helper .. [[ -V | awk {'print $2'}]]
 local app_name    = "luci-app-ddns"
 local app_title   = "Dynamic DNS"
-local app_version = "2.4.8-2"
+local app_version = "2.4.9-1"
 
 function index()
 	local nxfs	= require "nixio.fs"		-- global definitions not available
@@ -187,19 +187,26 @@ local function _get_status()
 
 		-- try to get registered IP
 		local lookup_host = s["lookup_host"] or "_nolookup_"
-		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 is_glue = tonumber(s["is_glue"] or 0)
-		local command = luci_helper .. [[ -]]
-		if (use_ipv6 == 1) then command = command .. [[6]] end
-		if (force_ipversion == 1) then command = command .. [[f]] end
-		if (force_dnstcp == 1) then command = command .. [[t]] end
-		if (is_glue == 1) then command = command .. [[g]] end
-		command = command .. [[l ]] .. lookup_host
-		if (#dnsserver > 0) then command = command .. [[ -d ]] .. dnsserver end
-		command = command .. [[ -- get_registered_ip]]
-		local reg_ip = SYS.exec(command)
+		local chk_sec  = DDNS.calc_seconds(
+					tonumber(s["check_interval"]) or 10,
+					s["check_unit"] or "minutes" )
+		local reg_ip = DDNS.get_regip(section, chk_sec)
+		if reg_ip == "NOFILE" then
+			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 is_glue = tonumber(s["is_glue"] or 0)
+			local command = luci_helper .. [[ -]]
+			if (use_ipv6 == 1) then command = command .. [[6]] end
+			if (force_ipversion == 1) then command = command .. [[f]] end
+			if (force_dnstcp == 1) then command = command .. [[t]] end
+			if (is_glue == 1) then command = command .. [[g]] end
+			command = command .. [[l ]] .. lookup_host
+			command = command .. [[ -S ]] .. section
+			if (#dnsserver > 0) then command = command .. [[ -d ]] .. dnsserver end
+			command = command .. [[ -- get_registered_ip]]
+			reg_ip = SYS.exec(command)
+		end
 		if reg_ip == "" then
 			reg_ip = "_nodata_"
 		end
diff --git a/applications/luci-app-ddns/luasrc/model/cbi/ddns/overview.lua b/applications/luci-app-ddns/luasrc/model/cbi/ddns/overview.lua
index 6ba3ea0dd8..114f831c17 100644
--- a/applications/luci-app-ddns/luasrc/model/cbi/ddns/overview.lua
+++ b/applications/luci-app-ddns/luasrc/model/cbi/ddns/overview.lua
@@ -1,4 +1,4 @@
--- Copyright 2014-2016 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
+-- Copyright 2014-2018 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
 -- Licensed to the public under the Apache License 2.0.
 
 local NXFS = require "nixio.fs"
@@ -122,22 +122,29 @@ function dom.set_one(self, section)
 	end
 end
 function dom.set_two(self, section)
-	local lookup_host = self.map:get(section, "lookup_host") or ""
-	if lookup_host == "" then return "" end
-	local dnsserver = self.map:get(section, "dnsserver") or ""
-	local use_ipv6 = tonumber(self.map:get(section, "use_ipv6") or 0)
-	local force_ipversion = tonumber(self.map:get(section, "force_ipversion") or 0)
-	local force_dnstcp = tonumber(self.map:get(section, "force_dnstcp") or 0)
-	local is_glue = tonumber(self.map:get(section, "is_glue") or 0)
-	local command = CTRL.luci_helper .. [[ -]]
-	if (use_ipv6 == 1) then command = command .. [[6]] end
-	if (force_ipversion == 1) then command = command .. [[f]] end
-	if (force_dnstcp == 1) then command = command .. [[t]] end
-	if (is_glue == 1) then command = command .. [[g]] end
-	command = command .. [[l ]] .. lookup_host
-	if (#dnsserver > 0) then command = command .. [[ -d ]] .. dnsserver end
-	command = command .. [[ -- get_registered_ip]]
-	local ip = SYS.exec(command)
+	local chk_sec  = DDNS.calc_seconds(
+				tonumber(self.map:get(section, "check_interval")) or 10,
+				self.map:get(section, "check_unit") or "minutes" )
+	local ip = DDNS.get_regip(section, chk_sec)
+	if ip == "NOFILE" then
+		local lookup_host = self.map:get(section, "lookup_host") or ""
+		if lookup_host == "" then return "" end
+		local dnsserver = self.map:get(section, "dnsserver") or ""
+		local use_ipv6 = tonumber(self.map:get(section, "use_ipv6") or 0)
+		local force_ipversion = tonumber(self.map:get(section, "force_ipversion") or 0)
+		local force_dnstcp = tonumber(self.map:get(section, "force_dnstcp") or 0)
+		local is_glue = tonumber(self.map:get(section, "is_glue") or 0)
+		local command = CTRL.luci_helper .. [[ -]]
+		if (use_ipv6 == 1) then command = command .. [[6]] end
+		if (force_ipversion == 1) then command = command .. [[f]] end
+		if (force_dnstcp == 1) then command = command .. [[t]] end
+		if (is_glue == 1) then command = command .. [[g]] end
+		command = command .. [[l ]] .. lookup_host
+		command = command .. [[ -S ]] .. section
+		if (#dnsserver > 0) then command = command .. [[ -d ]] .. dnsserver end
+		command = command .. [[ -- get_registered_ip]]
+		ip = SYS.exec(command)
+	end
 	if ip == "" then ip = translate("no data") end
 	return ip
 end
diff --git a/applications/luci-app-ddns/luasrc/tools/ddns.lua b/applications/luci-app-ddns/luasrc/tools/ddns.lua
index 209d9c3a41..690b9b30ce 100755
--- a/applications/luci-app-ddns/luasrc/tools/ddns.lua
+++ b/applications/luci-app-ddns/luasrc/tools/ddns.lua
@@ -1,4 +1,4 @@
--- Copyright 2014-2016 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
+-- Copyright 2014-2018 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
 -- Licensed to the public under the Apache License 2.0.
 
 module("luci.tools.ddns", package.seeall)
@@ -74,6 +74,23 @@ function get_lastupd(section)
 	return etime
 end
 
+-- read registered IP from [section].ip file
+function get_regip(section, chk_sec)
+	local uci   = UCI.cursor()
+	local rdir  = uci:get("ddns", "global", "ddns_rundir") or "/var/run/ddns"
+	local ip = "NOFILE"
+	if NXFS.access("%s/%s.ip" % { rdir, section }) then
+		local ftime = NXFS.stat("%s/%s.ip" % { rdir, section }, "ctime") or 0
+		local otime = os.time()
+		-- give ddns-scripts time (9 sec) to update file
+		if otime < (ftime + chk_sec + 9) then
+			ip = NXFS.readfile("%s/%s.ip" % { rdir, section })
+		end
+	end
+	uci:unload("ddns")
+	return ip
+end
+
 -- read PID from run file and verify if still running
 function get_pid(section)
 	local uci  = UCI.cursor()