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module (..., package.seeall)
require ("modelfunctions")
require ("posix")
require ("format")
require ("fs")
require ("processinfo")
require ("validator")
require ("date")
local processname = "openvpn"
local packagename = "openvpn"
local baseurl = "/etc/openvpn/"
-- ################################################################################
-- LOCAL FUNCTIONS
local function config_content( f )
local config = {}
local lines = format.parse_linesandwords(fs.read_file(f) or "", "[#;]")
-- there can be multiple entries
for i,linetable in ipairs(lines) do
if config[linetable[1]] then
config[linetable[1]] = config[linetable[1]] .. "\n" .. (table.concat(linetable, " ", 2) or "")
else
config[linetable[1]] = table.concat(linetable, " ", 2) or ""
end
end
config.name = f
if config.remote then
config.remoteport = string.match ( config.remote, "^%S+%s+(%S*)" )
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
return config
end
local is_running = function( process, parameters )
local retval = "Stopped"
for i,v in ipairs(processinfo.pidof(process) or {}) do
local path = string.gsub("/proc/".. v .. "/cmdline", "%s", "")
local f = 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 (config)
config.errtxt = nil
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.errtxt = ""
if not (config.ca) then
config.errtxt = config.errtxt .. "Check CA; "
end
if not (config.cert) then
config.errtxt = config.errtxt .. "Check CERT; "
end
if not (config.key) then
config.errtxt = config.errtxt .. "Check KEY; "
end
if not (config.dev) then
config.errtxt = config.errtxt .. "Check DEV; "
end
if not (config.proto) then
config.errtxt = config.errtxt .. "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.errtxt = nil
end
else
config.type = "client"
config.errtxt = nil
end
if not (config.type) then config.type = "unknown" end
return config.type, config.errtxt
end
local function list_conffiles()
local configfiles = {}
for file in fs.find(".*conf", baseurl) do
if fs.is_file(file) then
configfiles[#configfiles+1] = file
end
end
return configfiles
end
local function clientlist( statusfile )
local clientlist = {}
local routinglist = {}
local datechange = {}
local list = {}
if (statusfile) then
local f = fs.read_file_as_array( statusfile )
local clientlst = false
local routinglst = false
if ( f ) then
for k,v in ipairs(f) do
local col = format.string_to_table(v, ",")
if ( col[1] == "ROUTING TABLE" ) or ( col[1] == "GLOBAL STATS" ) then
clientlst = false
routinglst = false
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=date.abr_month_num(month),
day=day,
hour=hour,
min=min,
sec=sec } )
end
end
if ( col[1] == "Virtual Address" ) then
routinglst = true
end
if ( col[1] == "Common Name" ) then
clientlst = true
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
local lastdatechangetxt, lastdatechangediff
if ( #clientlist > 0 ) then
local lastdatechange = date.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, #clientlist, lastdatechangetxt, lastdatechangediff
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function getstatus()
return modelfunctions.getstatus(processname, packagename, "OpenVPN Status")
end
function getclientinfo(f)
local config = config_content(f)
return cfe({ type="structure", value=clientlist(config.status), label="Client info" })
end
function get_config(f)
local config = config_content(f)
check_valid_config(config)
if config.type == "server" then
local clientlist, client_count, client_lastupdate, client_lastdatechangediff = clientlist(config.status)
config["client_lastupdate"] = client_lastupdate or "?"
config["client_lastdatechangediff"] = client_lastdatechangediff or "? min"
config["client_count"] = client_count or 0
end
config["status_isrunning"] = is_running ("openvpn", basename(f))
return cfe({ type="structure", value=config, label="OpenVPN Config" })
end
function get_logfile(f)
local config = config_content(f)
return cfe({ value=config.log or "", label="Config file" })
end
function get_conflist ()
local configlist = {}
for i,file in ipairs(list_conffiles()) do
config = config_content ( file )
local conf_type, errtxt = check_valid_config(config)
local isrunning = is_running ("openvpn", basename(file))
local clientlist, connclients = clientlist (config.status)
table.insert ( configlist, { name = file, type = conf_type, errtxt = errtxt, status = isrunning, clients = connclients } )
end
return cfe({ type="structure", value=configlist, label="Configuration List" })
end
function get_filecontent(f)
--FIXME validate
return modelfunctions.getfiledetails(f, list_conffiles())
end
function update_filecontent(filedetails)
--FIXME validate
return modelfunctions.setfiledetails(filedetails, list_conffiles())
end
function create_new_config()
config = {
name = cfe({ label="File Name" }),
}
return cfe({ type="group", value=config, label="Config" })
end
function create_config(config)
local success = true
local path = config.value.name.value
if not string.find(path, "/") then
path = baseurl .. path
end
if not validator.is_valid_filename(path, baseurl) then
success = false
config.value.name.errtxt = "Invalid path"
elseif posix.stat(path) then
success = false
config.value.name.errtxt = "File already exists"
end
if success then
fs.create_file(path)
else
config.errtxt = "Failed to create config"
end
return config
end
function delete_config(name)
local cmdresult = cfe({ label="Delete config result", errtxt="Failed to delete config - not found" })
if validator.is_valid_filename(name, baseurl) and fs.is_file(name) then
os.remove(name)
cmdresult.value = "Config Deleted"
cmdresult.errtxt = nil
end
return cmdresult
end
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