1 -- Copyright 2014 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
2 -- Licensed to the public under the Apache License 2.0.
4 module("luci.tools.ddns", package.seeall)
6 local NX = require "nixio"
7 local NXFS = require "nixio.fs"
8 local OPKG = require "luci.model.ipkg"
9 local UCI = require "luci.model.uci"
10 local SYS = require "luci.sys"
11 local UTIL = require "luci.util"
13 -- function to calculate seconds from given interval and unit
14 function calc_seconds(interval, unit)
15 if not tonumber(interval) then
17 elseif unit == "days" then
18 return (tonumber(interval) * 86400) -- 60 sec * 60 min * 24 h
19 elseif unit == "hours" then
20 return (tonumber(interval) * 3600) -- 60 sec * 60 min
21 elseif unit == "minutes" then
22 return (tonumber(interval) * 60) -- 60 sec
23 elseif unit == "seconds" then
24 return tonumber(interval)
30 -- check if IPv6 supported by OpenWrt
32 return NXFS.access("/proc/net/ipv6_route")
33 and NXFS.access("/usr/sbin/ip6tables")
36 -- check if Wget with SSL support or cURL installed
38 if (SYS.call([[ grep -iq "\+ssl" /usr/bin/wget 2>/dev/null ]]) == 0) then
41 return NXFS.access("/usr/bin/curl")
45 -- check if Wget with SSL or cURL with proxy support installed
46 function check_proxy()
47 -- we prefere GNU Wget for communication
48 if (SYS.call([[ grep -iq "\+ssl" /usr/bin/wget 2>/dev/null ]]) == 0) then
51 -- if not installed cURL must support proxy
52 elseif NXFS.access("/usr/bin/curl") then
53 return (SYS.call([[ grep -iq all_proxy /usr/lib/libcurl.so* 2>/dev/null ]]) == 0)
55 -- only BusyBox Wget is installed
57 return NXFS.access("/usr/bin/wget")
61 -- check if BIND host installed
62 function check_bind_host()
63 return NXFS.access("/usr/bin/host")
66 -- convert epoch date to given format
67 function epoch2date(epoch, format)
68 if not format or #format < 2 then
69 local uci = UCI.cursor()
70 format = uci:get("ddns", "global", "date_format") or "%F %R"
73 format = format:gsub("%%n", "<br />") -- replace newline
74 format = format:gsub("%%t", " ") -- replace tab
75 return os.date(format, epoch)
78 -- read lastupdate from [section].update file
79 function get_lastupd(section)
80 local uci = UCI.cursor()
81 local run_dir = uci:get("ddns", "global", "run_dir") or "/var/run/ddns"
82 local etime = tonumber(NXFS.readfile("%s/%s.update" % { run_dir, section } ) or 0 )
87 -- read PID from run file and verify if still running
88 function get_pid(section)
89 local uci = UCI.cursor()
90 local run_dir = uci:get("ddns", "global", "run_dir") or "/var/run/ddns"
91 local pid = tonumber(NXFS.readfile("%s/%s.pid" % { run_dir, section } ) or 0 )
92 if pid > 0 and not NX.kill(pid, 0) then
99 -- read version information for given package if installed
100 function ipkg_version(package)
104 local info = OPKG.info(package)
108 for k, v in pairs(info) do
109 if v.Package == package and v.Status.installed then
114 if i > 1 then -- more then one valid record
117 local sver = UTIL.split(version, "[%.%-]", nil, true)
120 major = tonumber(sver[1]) or 0,
121 minor = tonumber(sver[2]) or 0,
122 patch = tonumber(sver[3]) or 0,
123 build = tonumber(sver[4]) or 0
128 -- replacement of build-in read of UCI option
129 -- modified AbstractValue.cfgvalue(self, section) from cbi.lua
130 -- needed to read from other option then current value definition
131 function read_value(self, section, option)
133 if self.tag_error[section] then
134 value = self:formvalue(section)
136 value = self.map:get(section, option)
141 elseif not self.cast or self.cast == type(value) then
143 elseif self.cast == "string" then
144 if type(value) == "table" then
147 elseif self.cast == "table" then
152 -- replacement of build-in Flag.parse of cbi.lua
153 -- modified to mark section as changed if value changes
154 -- current parse did not do this, but it is done AbstaractValue.parse()
155 function flag_parse(self, section)
156 local fexists = self.map:formvalue(
157 luci.cbi.FEXIST_PREFIX .. self.config .. "." .. section .. "." .. self.option)
160 local fvalue = self:formvalue(section) and self.enabled or self.disabled
161 local cvalue = self:cfgvalue(section)
162 if fvalue ~= self.default or (not self.optional and not self.rmempty) then
163 self:write(section, fvalue)
167 if (fvalue ~= cvalue) then self.section.changed = true end
170 self.section.changed = true
174 -----------------------------------------------------------------------------
175 -- copied from https://svn.nmap.org/nmap/nselib/url.lua
176 -- @author Diego Nehab
177 -- @author Eddie Bell <ejlbell@gmail.com>
179 URI parsing, composition and relative URL resolution
182 RCS ID: $Id: url.lua,v 1.37 2005/11/22 08:33:29 diego Exp $
183 parse_query and build_query added For nmap (Eddie Bell <ejlbell@gmail.com>)
186 -- Parses a URL and returns a table with all its parts according to RFC 2396.
188 -- The following grammar describes the names given to the URL parts.
190 -- <url> ::= <scheme>://<authority>/<path>;<params>?<query>#<fragment>
191 -- <authority> ::= <userinfo>@<host>:<port>
192 -- <userinfo> ::= <user>[:<password>]
193 -- <path> :: = {<segment>/}<segment>
196 -- The leading <code>/</code> in <code>/<path></code> is considered part of
197 -- <code><path></code>.
198 -- @param url URL of request.
199 -- @param default Table with default values for each field.
200 -- @return A table with the following fields, where RFC naming conventions have
202 -- <code>scheme</code>, <code>authority</code>, <code>userinfo</code>,
203 -- <code>user</code>, <code>password</code>, <code>host</code>,
204 -- <code>port</code>, <code>path</code>, <code>params</code>,
205 -- <code>query</code>, and <code>fragment</code>.
206 -----------------------------------------------------------------------------
207 function parse_url(url) --, default)
208 -- initialize default parameters
210 -- for i,v in base.pairs(default or parsed) do
215 -- url = string.gsub(url, "%s", "")
217 url = string.gsub(url, "#(.*)$",
222 -- get scheme. Lower-case according to RFC 3986 section 3.1.
223 url = string.gsub(url, "^([%w][%w%+%-%.]*)%:",
225 parsed.scheme = string.lower(s);
229 url = string.gsub(url, "^//([^/]*)",
234 -- get query stringing
235 url = string.gsub(url, "%?(.*)",
241 url = string.gsub(url, "%;(.*)",
246 -- path is whatever was left
249 local authority = parsed.authority
250 if not authority then
253 authority = string.gsub(authority,"^([^@]*)@",
258 authority = string.gsub(authority, ":([0-9]*)$",
265 if authority ~= "" then
266 parsed.host = authority
269 local userinfo = parsed.userinfo
273 userinfo = string.gsub(userinfo, ":([^:]*)$",
278 parsed.user = userinfo