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module (..., package.seeall)
-- Load libraries
require("modelfunctions")
require("fs")
require("format")
-- Set variables
local configfile = "/etc/ntpd.conf"
local confdfile = "/etc/conf.d/ntpd"
local packagename = "openntpd"
local processname = "ntpd"
-- ################################################################################
-- LOCAL FUNCTIONS
local function last_time_change()
local cmdoutput = {}
local cmd, error = io.popen("cat /var/log/messages | grep ntpd | grep adjusting | tail -1" ,r)
local cmdoutput1,cmdoutput2 = string.match(cmd:read("*a"), "^%s*(%S+%s+%S+%s+%S+%s+).*: (.*)$")
cmd:close()
cmdoutput1 = cmdoutput1 or "(Have no data on updates)"
cmdoutput2 = cmdoutput2 or ""
return cmdoutput1 .. cmdoutput2
end
local function validate_config(config)
local success = true
-- Three of the fields are just lists of IP addresses / hostnames
local tags = {"server", "servers", "listen"}
for i,tag in ipairs(tags) do
local field = config.value[tag]
for j,entry in ipairs(field.value) do
if string.find(entry, "[^%w.-]") then
if not (tag=="listen" and entry=="*") then
field.errtxt = "Invalid IP address/hostname"
success = false
break
end
end
end
end
return success, config
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function startstop_service(action)
return modelfunctions.startstop_service(processname, action)
end
function getstatus()
return modelfunctions.getstatus(processname, packagename, "OpenNTPD Status")
end
function getstatusdetails()
local status = {}
status.timechanged = cfe({ value=last_time_change(), label="Previous time adjustment" })
status.date = cfe({ value=os.date(), label="Current time" })
return cfe({ type="group", value=status, label="OpenNTPD Detailed Status" })
end
function read_config ()
local config = {}
config.server = cfe({ type="list", value={}, label="Single servers", descr="List of server IP addresses/hostnames. OpenNTPD will attempt to synchronize to one resolved address for each hostname entry." })
config.servers = cfe({ type="list", value={}, label="Multiple servers", descr="List of server IP addresses/hostnames. OpenNTPD will attempt to synchronize to all resolved addresses for each hostname entry." })
config.listen = cfe({ type="list", value={}, label="Addresses to listen on", descr="List of IP addresses/hostnames to listen on. '*' means listen on all local addresses." })
config.setstimeonstartup = cfe({ type="boolean", value=false, label="Set time on startup" })
local conf = format.parse_linesandwords(fs.read_file(configfile))
for i,line in ipairs(conf) do
if line[1] == "server" then
table.insert(config.server.value, line[2])
elseif line[1] == "servers" then
table.insert(config.servers.value, line[2])
elseif line[1] == "listen" and line[2] == "on" then
table.insert(config.listen.value, line[3])
end
end
local opts = string.sub(format.parse_ini_file(fs.read_file(confdfile), "", "NTPD_OPTS"), 2, -2)
if format.opts_to_table(opts, "-s") then
config.setstimeonstartup.value = true
end
return cfe({ type="group", value=config, label="OpenNTPD Config" })
end
function update_config(config)
local success, config = validate_config(config)
if success then
local reverseserver = {} for i,val in ipairs(config.value.server.value) do reverseserver[val] = i end
local reverseservers = {} for i,val in ipairs(config.value.servers.value) do reverseservers[val] = i end
local reverselisten = {} for i,val in ipairs(config.value.listen.value) do reverselisten[val] = i end
local configcontent = string.gsub(fs.read_file(configfile), "\n+$", "")
local configlines = format.parse_linesandwords(configcontent)
for i=#configlines,1,-1 do
if configlines[i][1] == "server" then
if reverseserver[configlines[i][2]] then
reverseserver[configlines[i][2]] = nil
else
configcontent = format.replace_line(configcontent, configlines[i].linenum)
end
elseif configlines[i][1] == "servers" then
if reverseservers[configlines[i][2]] then
reverseservers[configlines[i][2]] = nil
else
configcontent = format.replace_line(configcontent, configlines[i].linenum)
end
elseif configlines[i][1] == "listen" and configlines[i][2] == "on" then
if reverselisten[configlines[i][3]] then
reverselisten[configlines[i][3]] = nil
else
configcontent = format.replace_line(configcontent, configlines[i].linenum)
end
end
end
-- Then add the missing ones
lines = {configcontent}
for entry in pairs(reverselisten) do
lines[#lines+1] = "listen on "..entry
end
for entry in pairs(reverseserver) do
lines[#lines+1] = "server "..entry
end
for entry in pairs(reverseservers) do
lines[#lines+1] = "servers "..entry
end
fs.write_file(configfile, table.concat(lines, "\n"))
-- Finally, handle setstimeonstartup
local opts = {}
if config.value.setstimeonstartup.value then opts["-s"] = "" end
fs.write_file(confdfile, format.update_ini_file(fs.read_file(confdfile) or "", "", "NTPD_OPTS", '"'..format.table_to_opts(opts)..'"'))
else
config.errtxt = "Failed to save config"
end
return config
end
function get_filedetails()
return modelfunctions.getfiledetails(configfile)
end
function update_filedetails(filedetails)
filedetails.value.filename.value = configfile
return modelfunctions.setfiledetails(filedetails)
end
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