429 lines
12 KiB
Lua
Executable file
429 lines
12 KiB
Lua
Executable file
-- 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)
|
|
|
|
local NX = require "nixio"
|
|
local NXFS = require "nixio.fs"
|
|
local UCI = require "luci.model.uci"
|
|
local SYS = require "luci.sys"
|
|
|
|
function env_info(type)
|
|
|
|
if ( type == "has_ssl" ) or ( type == "has_proxy" ) or ( type == "has_forceip" )
|
|
or ( type == "has_bindnet" ) or ( type == "has_fetch" )
|
|
or ( type == "has_wgetssl" ) or ( type == "has_curl" )
|
|
or ( type == "has_curlssl" ) or ( type == "has_curlpxy" )
|
|
or ( type == "has_fetchssl" ) or ( type == "has_bbwget" ) then
|
|
|
|
local function has_wgetssl()
|
|
return (SYS.call( [[which wget-ssl >/dev/null 2>&1]] ) == 0) -- and true or nil
|
|
end
|
|
|
|
local function has_curlssl()
|
|
return (SYS.call( [[$(which curl) -V 2>&1 | grep -qF "https"]] ) == 0)
|
|
end
|
|
|
|
local function has_fetch()
|
|
return (SYS.call( [[which uclient-fetch >/dev/null 2>&1]] ) == 0)
|
|
end
|
|
|
|
local function has_fetchssl()
|
|
return NXFS.access("/lib/libustream-ssl.so")
|
|
end
|
|
|
|
local function has_curl()
|
|
return (SYS.call( [[which curl >/dev/null 2>&1]] ) == 0)
|
|
end
|
|
|
|
local function has_curlpxy()
|
|
return (SYS.call( [[grep -i "all_proxy" /usr/lib/libcurl.so* >/dev/null 2>&1]] ) == 0)
|
|
end
|
|
|
|
local function has_bbwget()
|
|
return (SYS.call( [[$(which wget) -V 2>&1 | grep -iqF "busybox"]] ) == 0)
|
|
end
|
|
|
|
if type == "has_wgetssl" then
|
|
return has_wgetssl()
|
|
|
|
elseif type == "has_curl" then
|
|
return has_curl()
|
|
|
|
elseif type == "has_curlssl" then
|
|
return has_curlssl()
|
|
|
|
elseif type == "has_curlpxy" then
|
|
return has_curlpxy()
|
|
|
|
elseif type == "has_fetch" then
|
|
return has_fetch()
|
|
|
|
elseif type == "has_fetchssl" then
|
|
return has_fetchssl()
|
|
|
|
elseif type == "has_bbwget" then
|
|
return has_bbwget()
|
|
|
|
elseif type == "has_ssl" then
|
|
if has_wgetssl() then return true end
|
|
if has_curlssl() then return true end
|
|
if (has_fetch() and has_fetchssl()) then return true end
|
|
return false
|
|
|
|
elseif type == "has_proxy" then
|
|
if has_wgetssl() then return true end
|
|
if has_curlpxy() then return true end
|
|
if has_fetch() then return true end
|
|
if has_bbwget() then return true end
|
|
return false
|
|
|
|
elseif type == "has_forceip" then
|
|
if has_wgetssl() then return true end
|
|
if has_curl() then return true end
|
|
if has_fetch() then return true end -- only really needed for transfer
|
|
return false
|
|
|
|
elseif type == "has_bindnet" then
|
|
if has_curl() then return true end
|
|
if has_wgetssl() then return true end
|
|
return false
|
|
end
|
|
|
|
elseif ( type == "has_dnsserver" ) or ( type == "has_bindhost" ) or ( type == "has_hostip" ) or ( type == "has_nslookup" ) then
|
|
local function has_bindhost()
|
|
if (SYS.call( [[which host >/dev/null 2>&1]] ) == 0) then return true end
|
|
if (SYS.call( [[which khost >/dev/null 2>&1]] ) == 0) then return true end
|
|
if (SYS.call( [[which drill >/dev/null 2>&1]] ) == 0) then return true end
|
|
return false
|
|
end
|
|
|
|
local function has_hostip()
|
|
return (SYS.call( [[which hostip >/dev/null 2>&1]] ) == 0)
|
|
end
|
|
|
|
local function has_nslookup()
|
|
return (SYS.call( [[which nslookup >/dev/null 2>&1]] ) == 0)
|
|
end
|
|
|
|
if type == "has_bindhost" then
|
|
return has_bindhost()
|
|
elseif type == "has_hostip" then
|
|
return has_hostip()
|
|
elseif type == "has_nslookup" then
|
|
return has_nslookup()
|
|
elseif type == "has_dnsserver" then
|
|
if has_bindhost() then return true end
|
|
if has_hostip() then return true end
|
|
if has_nslookup() then return true end
|
|
return false
|
|
end
|
|
|
|
elseif type == "has_ipv6" then
|
|
return (NXFS.access("/proc/net/ipv6_route") and NXFS.access("/usr/sbin/ip6tables"))
|
|
|
|
elseif type == "has_cacerts" then
|
|
--old _check_certs() local function
|
|
local _, v = NXFS.glob("/etc/ssl/certs/*.crt")
|
|
if ( v == 0 ) then _, v = NXFS.glob("/etc/ssl/certs/*.pem") end
|
|
return (v > 0)
|
|
else
|
|
return
|
|
end
|
|
|
|
end
|
|
|
|
-- function to calculate seconds from given interval and unit
|
|
function calc_seconds(interval, unit)
|
|
if not tonumber(interval) then
|
|
return nil
|
|
elseif unit == "days" then
|
|
return (tonumber(interval) * 86400) -- 60 sec * 60 min * 24 h
|
|
elseif unit == "hours" then
|
|
return (tonumber(interval) * 3600) -- 60 sec * 60 min
|
|
elseif unit == "minutes" then
|
|
return (tonumber(interval) * 60) -- 60 sec
|
|
elseif unit == "seconds" then
|
|
return tonumber(interval)
|
|
else
|
|
return nil
|
|
end
|
|
end
|
|
|
|
-- convert epoch date to given format
|
|
function epoch2date(epoch, format)
|
|
if not format or #format < 2 then
|
|
local uci = UCI.cursor()
|
|
format = uci:get("ddns", "global", "ddns_dateformat") or "%F %R"
|
|
uci:unload("ddns")
|
|
end
|
|
format = format:gsub("%%n", "<br />") -- replace newline
|
|
format = format:gsub("%%t", " ") -- replace tab
|
|
return os.date(format, epoch)
|
|
end
|
|
|
|
-- read lastupdate from [section].update file
|
|
function get_lastupd(section)
|
|
local uci = UCI.cursor()
|
|
local rdir = uci:get("ddns", "global", "ddns_rundir") or "/var/run/ddns"
|
|
local etime = tonumber(NXFS.readfile("%s/%s.update" % { rdir, section } ) or 0 )
|
|
uci:unload("ddns")
|
|
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()
|
|
local rdir = uci:get("ddns", "global", "ddns_rundir") or "/var/run/ddns"
|
|
local pid = tonumber(NXFS.readfile("%s/%s.pid" % { rdir, section } ) or 0 )
|
|
if pid > 0 and not NX.kill(pid, 0) then
|
|
pid = 0
|
|
end
|
|
uci:unload("ddns")
|
|
return pid
|
|
end
|
|
|
|
-- replacement of build-in read of UCI option
|
|
-- modified AbstractValue.cfgvalue(self, section) from cbi.lua
|
|
-- needed to read from other option then current value definition
|
|
function read_value(self, section, option)
|
|
local value
|
|
if self.tag_error[section] then
|
|
value = self:formvalue(section)
|
|
else
|
|
value = self.map:get(section, option)
|
|
end
|
|
|
|
if not value then
|
|
return nil
|
|
elseif not self.cast or self.cast == type(value) then
|
|
return value
|
|
elseif self.cast == "string" then
|
|
if type(value) == "table" then
|
|
return value[1]
|
|
end
|
|
elseif self.cast == "table" then
|
|
return { value }
|
|
end
|
|
end
|
|
|
|
-- replacement of build-in parse of "Value"
|
|
-- modified AbstractValue.parse(self, section, novld) from cbi.lua
|
|
-- validate is called if rmempty/optional true or false
|
|
-- before write check if forcewrite, value eq default, and more
|
|
function value_parse(self, section, novld)
|
|
local fvalue = self:formvalue(section)
|
|
local fexist = ( fvalue and (#fvalue > 0) ) -- not "nil" and "not empty"
|
|
local cvalue = self:cfgvalue(section)
|
|
local rm_opt = ( self.rmempty or self.optional )
|
|
local eq_cfg -- flag: equal cfgvalue
|
|
|
|
-- If favlue and cvalue are both tables and have the same content
|
|
-- make them identical
|
|
if type(fvalue) == "table" and type(cvalue) == "table" then
|
|
eq_cfg = (#fvalue == #cvalue)
|
|
if eq_cfg then
|
|
for i=1, #fvalue do
|
|
if cvalue[i] ~= fvalue[i] then
|
|
eq_cfg = false
|
|
end
|
|
end
|
|
end
|
|
if eq_cfg then
|
|
fvalue = cvalue
|
|
end
|
|
end
|
|
|
|
-- removed parameter "section" from function call because used/accepted nowhere
|
|
-- also removed call to function "transfer"
|
|
local vvalue, errtxt = self:validate(fvalue)
|
|
|
|
-- error handling; validate return "nil"
|
|
if not vvalue then
|
|
if novld then -- and "novld" set
|
|
return -- then exit without raising an error
|
|
end
|
|
|
|
if fexist then -- and there is a formvalue
|
|
self:add_error(section, "invalid", errtxt or self.title .. ": invalid")
|
|
return -- so data are invalid
|
|
elseif not rm_opt then -- and empty formvalue but NOT (rmempty or optional) set
|
|
self:add_error(section, "missing", errtxt or self.title .. ": missing")
|
|
return -- so data is missing
|
|
elseif errtxt then
|
|
self:add_error(section, "invalid", errtxt)
|
|
return
|
|
end
|
|
-- error ("\n option: " .. self.option ..
|
|
-- "\n fvalue: " .. tostring(fvalue) ..
|
|
-- "\n fexist: " .. tostring(fexist) ..
|
|
-- "\n cvalue: " .. tostring(cvalue) ..
|
|
-- "\n vvalue: " .. tostring(vvalue) ..
|
|
-- "\n vexist: " .. tostring(vexist) ..
|
|
-- "\n rm_opt: " .. tostring(rm_opt) ..
|
|
-- "\n eq_cfg: " .. tostring(eq_cfg) ..
|
|
-- "\n eq_def: " .. tostring(eq_def) ..
|
|
-- "\n novld : " .. tostring(novld) ..
|
|
-- "\n errtxt: " .. tostring(errtxt) )
|
|
end
|
|
|
|
-- lets continue with value returned from validate
|
|
eq_cfg = ( vvalue == cvalue ) -- update equal_config flag
|
|
local vexist = ( vvalue and (#vvalue > 0) ) and true or false -- not "nil" and "not empty"
|
|
local eq_def = ( vvalue == self.default ) -- equal_default flag
|
|
|
|
-- (rmempty or optional) and (no data or equal_default)
|
|
if rm_opt and (not vexist or eq_def) then
|
|
if self:remove(section) then -- remove data from UCI
|
|
self.section.changed = true -- and push events
|
|
end
|
|
return
|
|
end
|
|
|
|
-- not forcewrite and no changes, so nothing to write
|
|
if not self.forcewrite and eq_cfg then
|
|
return
|
|
end
|
|
|
|
-- we should have a valid value here
|
|
assert (vvalue, "\n option: " .. self.option ..
|
|
"\n fvalue: " .. tostring(fvalue) ..
|
|
"\n fexist: " .. tostring(fexist) ..
|
|
"\n cvalue: " .. tostring(cvalue) ..
|
|
"\n vvalue: " .. tostring(vvalue) ..
|
|
"\n vexist: " .. tostring(vexist) ..
|
|
"\n rm_opt: " .. tostring(rm_opt) ..
|
|
"\n eq_cfg: " .. tostring(eq_cfg) ..
|
|
"\n eq_def: " .. tostring(eq_def) ..
|
|
"\n errtxt: " .. tostring(errtxt) )
|
|
|
|
-- write data to UCI; raise event only on changes
|
|
if self:write(section, vvalue) and not eq_cfg then
|
|
self.section.changed = true
|
|
end
|
|
end
|
|
|
|
-----------------------------------------------------------------------------
|
|
-- copied from https://svn.nmap.org/nmap/nselib/url.lua
|
|
-- @author Diego Nehab
|
|
-- @author Eddie Bell <ejlbell@gmail.com>
|
|
--[[
|
|
URI parsing, composition and relative URL resolution
|
|
LuaSocket toolkit.
|
|
Author: Diego Nehab
|
|
RCS ID: $Id: url.lua,v 1.37 2005/11/22 08:33:29 diego Exp $
|
|
parse_query and build_query added For nmap (Eddie Bell <ejlbell@gmail.com>)
|
|
]]--
|
|
---
|
|
-- Parses a URL and returns a table with all its parts according to RFC 2396.
|
|
--
|
|
-- The following grammar describes the names given to the URL parts.
|
|
-- <code>
|
|
-- <url> ::= <scheme>://<authority>/<path>;<params>?<query>#<fragment>
|
|
-- <authority> ::= <userinfo>@<host>:<port>
|
|
-- <userinfo> ::= <user>[:<password>]
|
|
-- <path> :: = {<segment>/}<segment>
|
|
-- </code>
|
|
--
|
|
-- The leading <code>/</code> in <code>/<path></code> is considered part of
|
|
-- <code><path></code>.
|
|
-- @param url URL of request.
|
|
-- @param default Table with default values for each field.
|
|
-- @return A table with the following fields, where RFC naming conventions have
|
|
-- been preserved:
|
|
-- <code>scheme</code>, <code>authority</code>, <code>userinfo</code>,
|
|
-- <code>user</code>, <code>password</code>, <code>host</code>,
|
|
-- <code>port</code>, <code>path</code>, <code>params</code>,
|
|
-- <code>query</code>, and <code>fragment</code>.
|
|
-----------------------------------------------------------------------------
|
|
function parse_url(url) --, default)
|
|
-- initialize default parameters
|
|
local parsed = {}
|
|
-- for i,v in base.pairs(default or parsed) do
|
|
-- parsed[i] = v
|
|
-- end
|
|
|
|
-- remove whitespace
|
|
-- url = string.gsub(url, "%s", "")
|
|
-- get fragment
|
|
url = string.gsub(url, "#(.*)$",
|
|
function(f)
|
|
parsed.fragment = f
|
|
return ""
|
|
end)
|
|
-- get scheme. Lower-case according to RFC 3986 section 3.1.
|
|
url = string.gsub(url, "^([%w][%w%+%-%.]*)%:",
|
|
function(s)
|
|
parsed.scheme = string.lower(s);
|
|
return ""
|
|
end)
|
|
-- get authority
|
|
url = string.gsub(url, "^//([^/]*)",
|
|
function(n)
|
|
parsed.authority = n
|
|
return ""
|
|
end)
|
|
-- get query stringing
|
|
url = string.gsub(url, "%?(.*)",
|
|
function(q)
|
|
parsed.query = q
|
|
return ""
|
|
end)
|
|
-- get params
|
|
url = string.gsub(url, "%;(.*)",
|
|
function(p)
|
|
parsed.params = p
|
|
return ""
|
|
end)
|
|
-- path is whatever was left
|
|
parsed.path = url
|
|
|
|
local authority = parsed.authority
|
|
if not authority then
|
|
return parsed
|
|
end
|
|
authority = string.gsub(authority,"^([^@]*)@",
|
|
function(u)
|
|
parsed.userinfo = u;
|
|
return ""
|
|
end)
|
|
authority = string.gsub(authority, ":([0-9]*)$",
|
|
function(p)
|
|
if p ~= "" then
|
|
parsed.port = p
|
|
end;
|
|
return ""
|
|
end)
|
|
if authority ~= "" then
|
|
parsed.host = authority
|
|
end
|
|
|
|
local userinfo = parsed.userinfo
|
|
if not userinfo then
|
|
return parsed
|
|
end
|
|
userinfo = string.gsub(userinfo, ":([^:]*)$",
|
|
function(p)
|
|
parsed.password = p;
|
|
return ""
|
|
end)
|
|
parsed.user = userinfo
|
|
return parsed
|
|
end
|