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-- Copyright 2014 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
-- Licensed under the Apache License, Version 2.0
module("luci.controller.privoxy", package.seeall)
local NX = require "nixio"
local NXFS = require "nixio.fs"
local HTTP = require "luci.http"
local UCI = require "luci.model.uci"
local UTIL = require "luci.util"
local SYS = require "luci.sys"
PRIVOXY_MIN = "3.0.22-0" -- minimum version of service required
function index()
entry( {"admin", "services", "privoxy"}, cbi("privoxy"), _("Privoxy WEB proxy"), 59)
entry( {"admin", "services", "privoxy", "logview"}, call("logread") ).leaf = true
entry( {"admin", "services", "privoxy", "startstop"}, call("startstop") ).leaf = true
entry( {"admin", "services", "privoxy", "status"}, call("get_pid") ).leaf = true
end
-- called by XHR.get from detail_logview.htm
function logread()
-- read application settings
local uci = UCI.cursor()
local logdir = uci:get("privoxy", "privoxy", "logdir") or "/var/log"
local logfile = uci:get("privoxy", "privoxy", "logfile") or "privoxy.log"
uci:unload("privoxy")
local lfile=logdir .. "/" .. logfile
local ldata=NXFS.readfile(lfile)
if not ldata or #ldata == 0 then
ldata="_nodata_"
end
HTTP.write(ldata)
end
-- called by XHR.get from detail_startstop.htm
function startstop()
local pid = get_pid(true)
if pid > 0 then
SYS.call("/etc/init.d/privoxy stop")
NX.nanosleep(1) -- sleep a second
if NX.kill(pid, 0) then -- still running
NX.kill(pid, 9) -- send SIGKILL
end
pid = 0
else
SYS.call("/etc/init.d/privoxy start")
NX.nanosleep(1) -- sleep a second
pid = tonumber(NXFS.readfile("/var/run/privoxy.pid") or 0 )
if pid > 0 and not NX.kill(pid, 0) then
pid = 0 -- process did not start
end
end
HTTP.write(tostring(pid)) -- HTTP needs string not number
end
-- called by XHR.poll from detail_startstop.htm
-- and from lua (with parameter "true")
function get_pid(from_lua)
local pid = tonumber(NXFS.readfile("/var/run/privoxy.pid") or 0 )
if pid > 0 and not NX.kill(pid, 0) then
pid = 0
end
if from_lua then
return pid
else
HTTP.write(tostring(pid)) -- HTTP needs string not number
end
end
-- compare versions using "<=" "<" ">" ">=" "=" "<<" ">>"
function ipkg_ver_compare(ver1, comp, ver2)
if not ver1 or not (#ver1 > 0)
or not ver2 or not (#ver2 > 0)
or not comp or not (#comp > 0) then return nil end
-- correct compare string
if comp == "<>" or comp == "><" or comp == "!=" or comp == "~=" then comp = "~="
elseif comp == "<=" or comp == "<" or comp == "=<" then comp = "<="
elseif comp == ">=" or comp == ">" or comp == "=>" then comp = ">="
elseif comp == "=" or comp == "==" then comp = "=="
elseif comp == "<<" then comp = "<"
elseif comp == ">>" then comp = ">"
else return nil end
local av1 = UTIL.split(ver1, "[%.%-]", nil, true)
local av2 = UTIL.split(ver2, "[%.%-]", nil, true)
for i = 1, math.max(table.getn(av1),table.getn(av2)), 1 do
local s1 = av1[i] or ""
local s2 = av2[i] or ""
local n1 = tonumber(s1)
local n2 = tonumber(s2)
-- one numeric and other empty string then set other to 0
if n1 and not n2 and (not s2 or #s2 == 0) then n2 = 0 end
if n2 and not n1 and (not s1 or #s1 == 0) then n1 = 0 end
local nc = (n1 and n2) -- numeric compare
if nc then
-- first "not equal" found return true
if comp == "~=" and (n1 ~= n2) then return true end
-- first "lower" found return true
if (comp == "<" or comp == "<=") and (n1 < n2) then return true end
-- first "greater" found return true
if (comp == ">" or comp == ">=") and (n1 > n2) then return true end
-- not equal then return false
if (n1 ~= n2) then return false end
else
if comp == "~=" and (s1 ~= s2) then return true end
if (comp == "<" or comp == "<=") and (s1 < s2) then return true end
if (comp == ">" or comp == ">=") and (s1 > s2) then return true end
if (s1 ~= s2) then return false end
end
end
-- all equal then true
return true
end
-- read version information for given package if installed
function ipkg_ver_installed(pkg)
local version = nil
local control = io.open("/usr/lib/opkg/info/%s.control" % pkg, "r")
if control then
local ln
repeat
ln = control:read("*l")
if ln and ln:match("^Version: ") then
version = ln:gsub("^Version: ", "")
break
end
until not ln
control:close()
end
return version
end
-- replacement of build-in Flag.parse of cbi.lua
-- modified to mark section as changed if value changes
-- current parse did not do this, but it is done AbstaractValue.parse()
function flag_parse(self, section)
local fexists = self.map:formvalue(
luci.cbi.FEXIST_PREFIX .. self.config .. "." .. section .. "." .. self.option)
if fexists then
local fvalue = self:formvalue(section) and self.enabled or self.disabled
local cvalue = self:cfgvalue(section)
if fvalue ~= self.default or (not self.optional and not self.rmempty) then
self:write(section, fvalue)
else
self:remove(section)
end
if (fvalue ~= cvalue) then self.section.changed = true end
else
self:remove(section)
self.section.changed = true
end
end
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