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module (..., package.seeall)
require ("posix")
require ("format")
require ("fs")
local baseurl = "/etc/openvpn/"
-- no initializer in model - use controller.init for that
-- ################################################################################
-- LOCAL FUNCTIONS
local function file_info ( path )
require("posix")
local filedetails = posix.stat(path)
filedetails["owner"]=rawget((posix.getpasswd(filedetails["uid"])),"name")
filedetails["group"]=rawget((posix.getgroup(filedetails["gid"])),"name")
filedetails["atimelong"]=os.date("%c", filedetails["atime"])
filedetails["mtimelong"]=os.date("%c", filedetails["mtime"])
filedetails["longname"]=path
filedetails["name"]=basename(path)
filedetails["size"]=filedetails["size"] .. " bytes"
return filedetails
end
local function config_content( f )
local config = {}
config.name = baseurl .. f
local conf_file = fs.read_file_as_array ( config.name )
for i=1,table.maxn(conf_file) do
local l = conf_file[i]
-- Filter out commented lines
if not string.find ( l, "^[;#].*" ) then
local a,b = string.match ( l, "^%s*(%S+)%s*(%S*).*$" )
if (a) then
config[string.lower(a)]=b
end
if (a == "remote") then
config["remoteport"]=string.match ( l, "^%s*%S+%s+%S+%s+(%S*)" )
end
end
end
if not ( config.log ) then
config.log = config["log-append"]
end
if not ( config["max-clients"] ) then
config["max-clients"] = "Unlimited"
end
if not ( config["local"] ) then
config["local"] = "0.0.0.0"
end
config["linkname"]=basename(f)
return config
end
local is_running = function( process, parameters )
local strsplit = require("split")
local retval = ""
local tst = ""
local pidofsx, error = io.popen("pidof " .. process ,r)
local pidofs = string.gsub(pidofsx:read("*a"), "\n", "")
pidofsx:close()
for v in string.gmatch(pidofs, "%S+") do
local path = string.gsub("/proc/".. v .. "/cmdline", "%s", "")
local f,err = io.open(path,r)
local file_resultx = f:read("*a")
local file_result = string.match(file_resultx, parameters)
f:close()
if ( file_result ) then
retval = "Running"
end
end
return retval
end
local function check_valid_config ( f )
config.err = ""
if not (config.client) or not (config.ca) or not (config.cert) or not (config.key) or not (config.dev) or not (config.proto) or not (config.remote) then
config.type = nil
config.err = ""
if not (config.ca) then
config.err = config.err .. "Check CA; "
end
if not (config.cert) then
config.err = config.err .. "Check CERT; "
end
if not (config.key) then
config.err = config.err .. "Check KEY; "
end
if not (config.dev) then
config.err = config.err .. "Check DEV; "
end
if not (config.proto) then
config.err = config.err .. "Check PROTO; "
end
if (config.client) or not (config.ca) or not (config.cert) or not (config.key) or not (config.dev) or not (config.proto) or not (config.port) then
config.type = nil
else
config.type = "server"
config.err = ""
end
else
config.type = "client"
config.err = ""
end
if not (config.type) then config.type = "unknown" end
return config.type, config.err
end
local function list_conffiles()
local configfiles = {}
local config = {}
local files , errstr, errno = posix.dir ( baseurl )
if files then
for k,v in ipairs(files) do
if string.match (v, "^.*conf$") then
table.insert ( configfiles, cfe{ name = v } )
end
end
return configfiles
end
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function clientlist( self, path )
local libdate = require("date")
local clientlist = {}
local routinglist = {}
local datechange = {}
local list = {}
local f = ""
local clientlst = nil
local routinglst = nil
local strsplit = require("split")
if ( path ) then
config = config_content ( path )
end
if (config.status) then
local f = fs.read_file_as_array( config.status )
if ( f ) then
for k,v in ipairs(f) do
local col = strsplit(",", v)
if ( col[1] == "ROUTING TABLE" ) or ( col[1] == "GLOBAL STATS" ) then
clientlst = nil
routinglst = nil
end
if ( clientlst ) then
table.insert(clientlist, { CN=col[1],
REALADDR=col[2],
BYTESRCV=col[3],
BYTESSND=col[4],
CONN=col[5] } )
end
if ( routinglst ) then
table.insert(routinglist, { VIRTADDR=col[1],
CN=col[2],
REALADDR=col[3],
LAST=col[4] } )
if (col[4]) then
local month,day,hour,min,sec,year = string.match(col[4],"^%S+%s+(%S+)%s+(%S+)%s+(%d%d):(%d%d):(%d%d)%s+(%S+)")
table.insert(datechange, { year=year,
month=libdate.abr_month_num(month),
day=day,
hour=hour,
min=min,
sec=sec } )
end
end
if ( col[1] == "Virtual Address" ) then
routinglst = "YES"
end
if ( col[1] == "Common Name" ) then
clientlst = "YES"
end
end
end
end
-- JOIN 'CLIENT_LIST' and 'ROUTING_LIST' TABLES INTO ONE TABLE AND LATER ON PRESENT THIS TABLE
for k,v in ipairs(clientlist) do
for kk,vv in ipairs(routinglist) do
if ( v.CN == vv.CN ) then
table.insert(list, { CN=v.CN, REALADDR=v.REALADDR, BYTESRCV=v.BYTESRCV, BYTESSND=v.BYTESSND, VIRTADDR=vv.VIRTADDR, CONN=v.CONN, LAST = LAST } )
end
end
end
connclients = table.maxn(clientlist)
if ( connclients > 0 ) then
-- FIXME: If possible, use lib/date.lua instead of the following code.
local lastdatechange = libdate.date_to_seconds(datechange)
lastdatechangetxt = os.date("%c", lastdatechange[#lastdatechange])
lastdatechangediff = os.time() - os.date(lastdatechange[table.maxn(lastdatechange)])
if (lastdatechangediff > 60) then
lastdatechangediff = math.modf(lastdatechangediff / 60) .. " min"
else
lastdatechangediff = lastdatechangediff .. " sec"
end
end
return list, connclients, lastdatechangetxt, lastdatechangediff
end
function openvpn_version()
local f,error = io.popen("/usr/sbin/openvpn --version")
openvpnversion = f:read("*l")
f:close()
if not (openvpnversion) then
openvpnversion = "Not installed!"
end
return openvpnversion
end
function get_config ( self, f )
local path = basename(f)
local configresult = {}
config = nil
config = config_content ( path )
local clientlist, client_count, client_lastupdate, client_lastdatechangediff = clientlist ()
local status_isrunning = is_running ("openvpn", path)
if (client_lastupdate == nil) then
config["client_lastupdate"] = "?"
else
config["client_lastupdate"]=client_lastupdate
end
if (client_lastupdate == nil) then
config["client_lastdatechangediff"] = "? min"
else
config["client_lastdatechangediff"]=client_lastdatechangediff
end
config["client_count"]=client_count
config["status_isrunning"]=status_isrunning
configresult = config
return configresult
end
function update_filecontent (self, f, modifications)
name = basename(f)
path = baseurl .. name
local available_files = list_conffiles()
for k,v in pairs(available_files) do
if ( available_files[k].name == name ) then
local file = io.open( path, "w+" )
local file_result,err = file:write(format.dostounix(modifications))
file:close()
if (err ~= nil) then
local filedetails = get_config(name)
file_content = {name=name, value=file_result, filedetails=filedetails, err=err}
end
end
end
return file_content
end
function get_logfile( self, path)
config = config_content ( path )
local logfilecontent = fs.read_file ( config.log )
if not (logfilecontent) then
logfilecontent = "File is empty or missing!"
end
return ( { name = config.log, value = logfilecontent } )
end
function get_filecontent( self, f)
local path = basename(f)
local configresult = {}
config = config_content ( path )
local file = io.open( config.name )
local file_result = file:read("*a") or "unknown"
file:close()
local conf_type, err = check_valid_config ( path )
local filedetails = file_info( config.name )
file_content = cfe{name=config.name, value=file_result, type=conf_type, filedetails=filedetails}
return file_content
end
function get_conflist ()
local configlist = {}
for k,v in pairs(list_conffiles()) do
config = config_content ( v.name )
local conf_type, err = check_valid_config ( v.name )
local isrunning = is_running ("openvpn", v.name)
local clientlist, connclients = clientlist ()
table.insert ( configlist, cfe{ name = v.name, type = conf_type, err = err, status = isrunning, clients = connclients } )
end
local countconfigs = table.maxn(configlist)
return configlist, countconfigs
end
get = function (self)
return list_conffiles()
end
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