luci/applications/luci-app-ddns/luasrc/tools/ddns.lua
Dirk Brenken c22e5232f4
Merge pull request #2427 from leonghui/fix_has_curlssl_typo
luci-app-ddns: fix typo for has_curlssl()
2019-01-05 22:23:41 +01:00

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