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-- Copyright 2008 Steven Barth <steven@midlink.org>
-- Licensed to the public under the Apache License 2.0.
local fs = require "nixio.fs"
local sys = require "luci.sys"
local uci = require "luci.model.uci".cursor()
local testfullps = sys.exec("ps --help 2>&1 | grep BusyBox") --check which ps do we have
local psstring = (string.len(testfullps)>0) and "ps w" or "ps axfw" --set command we use to get pid
local m = Map("openvpn", translate("OpenVPN"))
local s = m:section( TypedSection, "openvpn", translate("OpenVPN instances"), translate("Below is a list of configured OpenVPN instances and their current state") )
s.template = "cbi/tblsection"
s.template_addremove = "openvpn/cbi-select-input-add"
s.addremove = true
s.add_select_options = { }
local cfg = s:option(DummyValue, "config")
function cfg.cfgvalue(self, section)
local file_cfg = self.map:get(section, "config")
if file_cfg then
s.extedit = luci.dispatcher.build_url("admin", "vpn", "openvpn", "file", "%s")
else
s.extedit = luci.dispatcher.build_url("admin", "vpn", "openvpn", "basic", "%s")
end
end
uci:load("openvpn_recipes")
uci:foreach( "openvpn_recipes", "openvpn_recipe",
function(section)
s.add_select_options[section['.name']] =
section['_description'] or section['.name']
end
)
function s.getPID(section) -- Universal function which returns valid pid # or nil
local pid = sys.exec("%s | grep -w '[o]penvpn(%s)'" % { psstring, section })
if pid and #pid > 0 then
return tonumber(pid:match("^%s*(%d+)"))
else
return nil
end
end
function s.parse(self, section)
local recipe = luci.http.formvalue(
luci.cbi.CREATE_PREFIX .. self.config .. "." ..
self.sectiontype .. ".select"
)
if recipe and not s.add_select_options[recipe] then
self.invalid_cts = true
else
TypedSection.parse( self, section )
end
end
function s.create(self, name)
local recipe = luci.http.formvalue(
luci.cbi.CREATE_PREFIX .. self.config .. "." ..
self.sectiontype .. ".select"
)
local name = luci.http.formvalue(
luci.cbi.CREATE_PREFIX .. self.config .. "." ..
self.sectiontype .. ".text"
)
if #name > 3 and not name:match("[^a-zA-Z0-9_]") then
local s = uci:section("openvpn", "openvpn", name)
if s then
local options = uci:get_all("openvpn_recipes", recipe)
for k, v in pairs(options) do
if k ~= "_role" and k ~= "_description" then
if type(v) == "boolean" then
v = v and "1" or "0"
end
uci:set("openvpn", name, k, v)
end
end
uci:save("openvpn")
uci:commit("openvpn")
if extedit then
luci.http.redirect( self.extedit:format(name) )
end
end
elseif #name > 0 then
self.invalid_cts = true
end
return 0
end
function s.remove(self, name)
local cfg_file = "/etc/openvpn/" ..name.. ".ovpn"
local auth_file = "/etc/openvpn/" ..name.. ".auth"
if fs.access(cfg_file) then
fs.unlink(cfg_file)
end
if fs.access(auth_file) then
fs.unlink(auth_file)
end
uci:delete("openvpn", name)
uci:save("openvpn")
uci:commit("openvpn")
end
s:option( Flag, "enabled", translate("Enabled") )
local active = s:option( DummyValue, "_active", translate("Started") )
function active.cfgvalue(self, section)
local pid = s.getPID(section)
if pid ~= nil then
return (sys.process.signal(pid, 0))
and translatef("yes (%i)", pid)
or translate("no")
end
return translate("no")
end
local updown = s:option( Button, "_updown", translate("Start/Stop") )
updown._state = false
updown.redirect = luci.dispatcher.build_url(
"admin", "vpn", "openvpn"
)
function updown.cbid(self, section)
local pid = s.getPID(section)
self._state = pid ~= nil and sys.process.signal(pid, 0)
self.option = self._state and "stop" or "start"
return AbstractValue.cbid(self, section)
end
function updown.cfgvalue(self, section)
self.title = self._state and "stop" or "start"
self.inputstyle = self._state and "reset" or "reload"
end
function updown.write(self, section, value)
if self.option == "stop" then
sys.call("/etc/init.d/openvpn stop %s" % section)
else
sys.call("/etc/init.d/openvpn start %s" % section)
end
luci.http.redirect( self.redirect )
end
local port = s:option( DummyValue, "port", translate("Port") )
function port.cfgvalue(self, section)
local val = AbstractValue.cfgvalue(self, section)
if not val then
local file_cfg = self.map:get(section, "config")
if file_cfg and fs.access(file_cfg) then
val = sys.exec("awk '{if(match(tolower($1),/^port$/)&&match($2,/[0-9]+/)){cnt++;printf $2;exit}}END{if(cnt==0)printf \"-\"}' " ..file_cfg)
if val == "-" then
val = sys.exec("awk '{if(match(tolower($1),/^remote$/)&&match($3,/[0-9]+/)){cnt++;printf $3;exit}}END{if(cnt==0)printf \"-\"}' " ..file_cfg)
end
end
end
return val or "-"
end
local proto = s:option( DummyValue, "proto", translate("Protocol") )
function proto.cfgvalue(self, section)
local val = AbstractValue.cfgvalue(self, section)
if not val then
local file_cfg = self.map:get(section, "config")
if file_cfg and fs.access(file_cfg) then
val = sys.exec("awk '{if(match(tolower($1),/^proto$/)&&match(tolower($2),/^udp[46]*$|^tcp[46]*-server$|^tcp[46]*-client$/)){cnt++;printf tolower($2);exit}}END{if(cnt==0)printf \"-\"}' " ..file_cfg)
if val == "-" then
val = sys.exec("awk '{if(match(tolower($1),/^remote$/)&&match(tolower($4),/^udp[46]*$|^tcp[46]*-server$|^tcp[46]*-client$/)){cnt++;printf $4;exit}}END{if(cnt==0)printf \"-\"}' " ..file_cfg)
end
end
end
return val or "-"
end
function m.on_after_apply(self,map)
sys.call('/etc/init.d/openvpn reload')
end
return m
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