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|
-- acf model for /etc/dhcp/*
-- Copyright(c) 2007 A. Brodmann - Licensed under terms of GPL2
module (..., package.seeall)
--- get additional libraries
require("modelfunctions")
require("validator")
local subnet = {}
local configfile = "/etc/dhcp/dhcpd.conf"
local processname = "dhcpd"
local packagename = "dhcp"
local leasefile = "/var/lib/dhcp/dhcpd.leases"
local config
-- ################################################################################
-- LOCAL FUNCTIONS
local replacemagiccharacters = function(str)
return string.gsub(str, "[%(%)%.%%%+%-%*%?%[%]%^%$]", "%%%1")
end
local replaceentry = function(file, configentry, newstring)
if newstring then
return string.gsub(file, string.gsub(replacemagiccharacters(table.concat(configentry, "\n")), "\n", "%%s+"), replacemagiccharacters(newstring), 1)
else
return string.gsub(file, "[^\n%S]*"..string.gsub(replacemagiccharacters(table.concat(configentry, "\n")), "\n", "%%s+").."%s*;%s*\n?", "", 1)
end
end
local parseconfigfile = function(file)
-- first, remove all comments
file = file or ""
lines = {}
for line in string.gmatch(file, "([^\n]*)\n?") do
lines[#lines+1] = string.gsub(line, "#.*$", "")
end
file = table.concat(lines, " ")
-- each line either ends with ';' or with '{'...'}'
-- build an array with one entry per statement, each entry having an array of elements, and possibly a subarray
local config = {}
local stack = {config}
local entry
for word in string.gmatch(file, "(%S+)") do
if word == "{" then
if not entry then
entry = {}
table.insert(stack[#stack], entry)
end
entry.sub = {}
stack[#stack+1] = entry.sub
entry = nil
elseif word == "}" then
stack[#stack] = nil
else
if not entry then
entry = {}
table.insert(stack[#stack], entry)
entry[1] = word
else
entry[#entry+1] = word
end
if string.find(word, ";$") then
entry[#entry] = string.sub(word, 1, -2)
entry = nil
end
end
end
return config
end
local validate_host = function( host )
local success = true
if host.value.host.value == "" or string.find(host.value.host.value, "[^%w.-]") then
host.value.host.errtxt = "Invalid host name"
success = false
end
if not validator.is_mac(host.value.mac.value) then
host.value.mac.errtxt = "Invalid mac address"
success = false
end
if host.value.addresses.value ~= "" then
for address in string.gmatch(host.value.addresses.value, "([^,%s]+),?%s*") do
if string.find(address, "[^%w.-]") then
host.value.addresses.errtxt = "Invalid domain name / IPv4 address"
success = false
end
end
end
return success, host
end
local validate_subnet = function( net )
local success = true
if net.value.subnet.value == "" or string.find(net.value.subnet.value, "[^%w.-]") then
net.value.subnet.errtxt = "Invalid domain name / IPv4 address"
success = false
end
if not validator.is_ipv4(net.value.netmask.value) then
net.value.netmask.errtxt = "Invalid IPv4 address"
success = false
end
if net.value.defleasetime.value ~= "" and not validator.is_integer_in_range(net.value.defleasetime.value, 1800, 86400) then
net.value.defleasetime.errtxt = "Lease time must be: 1800 < x < 86400"
success = false
end
if net.value.maxleasetime.value ~= "" and not validator.is_integer_in_range(net.value.maxleasetime.value, 1800, 86400) then
net.value.maxleasetime.errtxt = "Lease time must be: 1800 < x < 86400"
success = false
end
if net.value.routers.value ~= "" then
for router in string.gmatch(net.value.routers.value, "([^,%s]+),?%s*") do
if string.find(router, "[^%w.-]") then
net.value.routers.errtxt = "Invalid domain name / IPv4 address"
success = false
break
end
end
end
if string.find(net.value.domainname.value, "[^%w.-]") then
net.value.domainname.errtxt = "Invalid domain name"
success = false
end
if net.value.domainnameservers.value ~= "" then
for server in string.gmatch(net.value.domainnameservers.value, "([^,%s]+),?%s*") do
if string.find(server, "[^%w.-]") then
net.value.domainnameservers.errtxt = "Invalid domain name / IPv4 address"
success = false
end
end
end
if net.value.leaserangestart.value ~= "" and not validator.is_ipv4(net.value.leaserangestart.value) then
net.value.leaserangestart.errtxt = "Invalid IPv4 address"
success = false
end
if net.value.leaserangeend.value ~= "" then
if not validator.is_ipv4(net.value.leaserangeend.value) then
net.value.leaserangeend.errtxt = "Invalid IPv4 address"
success = false
elseif net.value.leaserangestart.value == "" then
net.value.leaserangeend.errtxt = "Cannot define range end without range start"
success = false
end
end
success = modelfunctions.validateselect(net.value.unknownclients) and success
return success, net
end
local validate_settings = function ( settings )
local success = modelfunctions.validateselect(settings.value.dnsupdatestyle)
if settings.value.defleasetime.value ~= "" and not validator.is_integer_in_range(settings.value.defleasetime.value, 1800, 86400) then
settings.value.defleasetime.errtxt = "Out of range 1800 < x < 86400 or not integer"
success = false
end
if settings.value.maxleasetime.value ~= "" and not validator.is_integer_in_range(settings.value.maxleasetime.value, 1800, 86400) then
settings.value.maxleasetime.errtxt = "Out of range 1800 < x < 86400 or not integer"
success = false
end
if string.find(settings.value.domainname.value, "[^%w.-]") then
settings.value.domainname.errtxt = "Invalid domain name"
success = false
end
if settings.value.domainnameservers.value ~= "" then
for server in string.gmatch(settings.value.domainnameservers.value, "([^,%s]+),?%s*") do
if string.find(server, "[^%w.-]") then
settings.value.domainnameservers.errtxt = "Invalid domain name / IPv4 address"
success = false
end
end
end
return success, settings
end
-- Give it the string and the position of the { and it will find the corresponding }
local find_section_end = function(file, section_start)
local i = section_start+1
local indent = 1
while indent > 0 and i <= #file do
local char = string.sub(file, i, i)
if char == "}" then indent = indent-1
elseif char == "{" then indent = indent+1
elseif char == "#" then i = string.find(file, "\n", i)
elseif char == "'" then i = string.find(file, "'", i)
elseif char == '"' then i = string.find(file, '"', i)
end
i=i+1;
end
return i-1
end
local host_write = function(host)
local file = fs.read_file(configfile) or ""
config = config or parseconfigfile(file)
-- First, add the host line if necessary
local hostline = "host "..host.value.host.value
local found = false
for i,value in ipairs(config or {}) do
if value[1] == "host" and value[2] == host.value.host.value then
found = true
end
end
if not found then file = file.."\n"..hostline.." {\n}" end
-- Now, find the host section
local host_start = select(2, string.find(file, replacemagiccharacters(hostline).."%s*{"))
local host_end = find_section_end(file, host_start) - 1
host_start = string.find(file, "\n", host_start) + 1
local hostcontent = string.sub(file, host_start, host_end)
-- Update the host data
host.value.mac.replace = "hardware ethernet "..host.value.mac.value
if host.value.addresses.value ~= "" then
host.value.addresses.replace = "fixed-address "..host.value.addresses.value
end
local hostconfig = parseconfigfile(hostcontent)
for i,value in ipairs(hostconfig or {}) do
if value[1] == "hardware" and value[2] == "ethernet" then
hostcontent = replaceentry(hostcontent, value, host.value.mac.replace)
host.value.mac.replace = nil
elseif value[1] == "fixed-address" then
hostcontent = replaceentry(hostcontent, value, host.value.addresses.replace)
host.value.addresses.replace = nil
end
end
-- add in new lines at the top if they didn't exist
local newlines = {}
newlines[#newlines+1] = host.value.mac.replace
host.value.mac.replace = nil
newlines[#newlines+1] = host.value.addresses.replace
host.value.addresses.replace = nil
if #newlines > 0 then
for i,line in ipairs(newlines) do newlines[i] = " "..line end
newlines[#newlines+1] = hostcontent
hostcontent = table.concat(newlines, ";\n")
end
-- The host is updated, put it into the file
file = string.sub(file, 1, host_start-1) .. hostcontent .. string.sub(file, host_end+1, -1)
-- Finally, write out the new file
fs.write_file(configfile, string.gsub(file, "\n*$", ""))
config = nil
end
local subnet_write = function(net)
local file = fs.read_file(configfile) or ""
config = config or parseconfigfile(file)
-- First, add or update the submet line
local subnetline = "subnet "..net.value.subnet.value.." netmask "..net.value.netmask.value
local found = false
for i,value in ipairs(config or {}) do
if value[1] == "subnet" and value[2] == net.value.subnet.value then
file = replaceentry(file, value, subnetline)
found = true
end
end
if not found then file = file.."\n"..subnetline.." {\n}" end
-- Now, find the subnet section
local subnet_start = select(2, string.find(file, replacemagiccharacters(subnetline).."%s*{"))
local subnet_end = find_section_end(file, subnet_start) - 1
subnet_start = string.find(file, "\n", subnet_start) + 1
local subnetcontent = string.sub(file, subnet_start, subnet_end)
-- Update the subnet data
if net.value.defleasetime.value ~= "" then
net.value.defleasetime.replace = "default-lease-time "..net.value.defleasetime.value
end
if net.value.maxleasetime.value ~= "" then
net.value.maxleasetime.replace = "max-lease-time "..net.value.maxleasetime.value
end
if net.value.routers.value ~= "" then
net.value.routers.replace = "option routers "..net.value.routers.value
end
if net.value.domainname.value ~= "" then
net.value.domainname.replace = 'option domain-name "'..net.value.domainname.value..'"'
end
if net.value.domainnameservers.value ~= "" then
net.value.domainnameservers.replace = "option domain-name-servers "..net.value.domainnameservers.value
end
if net.value.leaserangestart.value ~= "" then
net.value.leaserangestart.replace = "range "..net.value.leaserangestart.value
end
if net.value.leaserangeend.value ~= "" then
net.value.leaserangestart.replace = net.value.leaserangestart.replace.." "..net.value.leaserangeend.value
end
if net.value.unknownclients.value ~= "" then
net.value.unknownclients.replace = net.value.unknownclients.value.." unknown-clients"
end
local subnetconfig = parseconfigfile(subnetcontent)
for i,value in ipairs(subnetconfig or {}) do
if value[1] == "default-lease-time" then
subnetcontent = replaceentry(subnetcontent, value, net.value.defleasetime.replace)
net.value.defleasetime.replace = nil
elseif value[1] == "max-lease-time" then
subnetcontent = replaceentry(subnetcontent, value, net.value.maxleasetime.replace)
net.value.maxleasetime.replace = nil
elseif value[1] == "option" then
if value[2] == "routers" then
subnetcontent = replaceentry(subnetcontent, value, net.value.routers.replace)
net.value.routers.replace = nil
elseif value[2] == "domain-name" then
subnetcontent = replaceentry(subnetcontent, value, net.value.domainname.replace)
net.value.domainname.replace = nil
elseif value[2] == "domain-name-servers" then
subnetcontent = replaceentry(subnetcontent, value, net.value.domainnameservers.replace)
net.value.domainnameservers.replace = nil
end
elseif value[1] == "range" then
-- We need to steal the dynamic-bootp status
if value[2] == "dynamic-bootp" and net.value.leaserangestart.replace then
net.value.leaserangestart.replace = string.gsub(net.value.leaserangestart.replace, "range", "%1 "..value[2])
end
-- Need to use a pool if unknownclients defined
if net.value.unknownclients.replace then
subnetcontent = replaceentry(subnetcontent, value)
else
subnetcontent = replaceentry(subnetcontent, value, net.value.leaserangestart.replace)
net.value.leaserangestart.replace = nil
end
-- We only support one pool per subnet
elseif value[1] == "pool" then
for x,y in ipairs(value.sub or {}) do
if y[2] == "unknown-clients" then
subnetcontent = replaceentry(subnetcontent, y, net.value.unknownclients.replace)
net.value.unknownclients.replace = nil
elseif y[1] == "range" then
-- We need to steal the dynamic-bootp status
if y[2] == "dynamic-bootp" and net.value.leaserangestart.replace then
net.value.leaserangestart.replace = string.gsub(net.value.leaserangestart.replace, "range", "%1 "..y[2])
end
subnetcontent = replaceentry(subnetcontent, y, net.value.leaserangestart.replace)
net.value.leaserangestart.replace = nil
end
end
if net.value.leaserangestart.replace then
subnetcontent = string.gsub(subnetcontent, "(pool%s*{%s*\n)", "%1"..replacemagiccharacters(net.value.leaserangestart.replace)..";\n")
net.value.leaserangestart.replace = nil
end
if net.value.unknownclients.replace then
subnetcontent = string.gsub(subnetcontent, "(pool%s*{%s*\n)", "%1"..replacemagiccharacters(net.value.unknownclients.replace)..";\n")
net.value.unknownclients.replace = nil
end
end
end
-- add in new lines at the top if they didn't exist
local newlines = {}
newlines[#newlines+1] = net.value.defleasetime.replace
net.value.defleasetime.replace = nil
newlines[#newlines+1] = net.value.maxleasetime.replace
net.value.maxleasetime.replace = nil
newlines[#newlines+1] = net.value.routers.replace
net.value.routers.replace = nil
newlines[#newlines+1] = net.value.domainname.replace
net.value.domainname.replace = nil
newlines[#newlines+1] = net.value.domainnameservers.replace
net.value.domainnameservers.replace = nil
if net.value.leaserangestart.replace and not net.value.unknownclients.replace then
newlines[#newlines+1] = net.value.leaserangestart.replace
net.value.leaserangestart.replace = nil
end
if #newlines > 0 then
for i,line in ipairs(newlines) do newlines[i] = " "..line end
newlines[#newlines+1] = subnetcontent
subnetcontent = table.concat(newlines, ";\n")
end
if net.value.unknownclients.replace then
local temp = " pool {\n "..net.value.unknownclients.replace..";\n"
net.value.unknownclients.replace = nil
if net.value.leaserangestart.replace then
temp = temp .. " " .. net.value.leaserangestart.replace .. ";\n"
net.value.leaserangestart.replace = nil
end
subnetcontent = subnetcontent .. temp .. " }\n"
end
-- The subnet is updated, put it into the file
file = string.sub(file, 1, subnet_start-1) .. subnetcontent .. string.sub(file, subnet_end+1, -1)
-- Finally, write out the new file
fs.write_file(configfile, string.gsub(file, "\n*$", ""))
config = nil
end
-- ################################################################################
-- PUBLIC FUNCTIONS
function startstop_service(action)
return modelfunctions.startstop_service(processname, action)
end
function getstatus ()
return modelfunctions.getstatus(processname, packagename, "DHCP Status")
end
create_new_host = function()
host = {
host = cfe({ label="Host Name" }),
mac = cfe({ label="MAC Address" }),
addresses = cfe({ label="Fixed Addresses", descr="Comma-separated addresses" }),
}
return cfe({ type="group", value=host, label="Host" })
end
host_read = function( name )
config = config or parseconfigfile(fs.read_file(configfile) or "")
local host = create_new_host()
host.value.host.value = name
for j,k in ipairs(config) do
if k[1] == "host" and k[2] == name then
for i,value in ipairs(k.sub or {}) do
if value[1] == "hardware" and value[2] == "ethernet" then
host.value.mac.value = value[3] or ""
elseif value[1] == "fixed-address" then
host.value.addresses.value = table.concat(value, " ", 2)
end
end
break
end
end
return host
end
host_update = function( host )
local success, host = validate_host( host )
if not host.value.host.errtxt then
local previous_success = success
success = false
host.value.host.errtxt = "This host does not exist"
local hosts = get_hosts()
for i,ht in ipairs(hosts.value) do
if ht == host.value.host.value then
success = previous_success
host.value.host.errtxt = nil
break
end
end
end
if success then
host_write(host)
else
host.errtxt = "Failed to update host"
end
return host
end
host_create = function( host )
local success, host = validate_host(host)
if not host.value.host.errtxt then
local hosts = get_hosts()
for i,ht in ipairs(hosts.value) do
if ht == host.value.host.value then
success = false
host.value.host.errtxt = "This host already exists"
break
end
end
end
if success then
host_write(host)
else
host.errtxt = "Failed to create host"
end
return host
end
host_delete = function(name)
local file = fs.read_file(configfile) or ""
config = config or parseconfigfile(file)
local cmdresult = cfe({ value="Failed to delete host - not found", label="Delete host result" })
local hosts = get_hosts()
for i,host in ipairs(hosts.value) do
if host == name then
local start, endd = string.find(file, "host%s*"..replacemagiccharacters(name).."[^{]*{")
endd = find_section_end(file, endd)
endd = string.find(file, "\n", endd)
file = string.sub(file, 1, start-1) .. string.sub(file, endd+1, -1)
fs.write_file(configfile, string.gsub(file, "\n*$", ""))
config = nil
cmdresult.value = "Host Deleted"
end
end
return cmdresult
end
get_hosts = function ()
config = config or parseconfigfile(fs.read_file(configfile) or "")
local retval = {}
for i,entry in ipairs(config) do
if string.lower(entry[1] or "") == "host" then
table.insert(retval, entry[2])
end
end
return cfe({ type="list", value=retval, label="Host list" })
end
create_new_subnet = function()
net = {
subnet = cfe({ label="Subnet" }),
netmask = cfe({ label="Netmask" }),
defleasetime = cfe({ label="Default Lease Time" }),
maxleasetime = cfe({ label="Maximum Lease Time" }),
routers = cfe({ label="Routers", descr="Comma-separated addresses" }),
domainname = cfe({ label="Domainname" }),
domainnameservers = cfe({ label="Domain Name Servers", descr="Comma-separated addresses" }),
--wpad = cfe({ label="Web Proxy Auto Discovery" }),
leaserangestart = cfe({ label="Lease Range Start" }),
leaserangeend = cfe({ label="Lease Range End" }),
unknownclients = cfe({ type="select", label="Unknown Clients", option={"", "allow", "deny"} }),
}
return cfe({ type="group", value=net, label="Subnet" })
end
subnet_read = function( name )
config = config or parseconfigfile(fs.read_file(configfile) or "")
local net = create_new_subnet()
net.value.subnet.value = name
local pools = 0
local ranges = 0
for j,k in ipairs(config) do
if k[1] == "subnet" and k[2] == name then
net.value.netmask.value = k[4] or ""
for i,value in ipairs(k.sub or {}) do
if value[1] == "default-lease-time" then
net.value.defleasetime.value = value[2] or ""
elseif value[1] == "max-lease-time" then
net.value.maxleasetime.value = value[2] or ""
elseif value[1] == "option" then
if value[2] == "routers" then
net.value.routers.value = table.concat(value, " ", 3)
elseif value[2] == "domain-name" then
net.value.domainname.value = string.sub(value[3] or "", 2, -2)
elseif value[2] == "domain-name-servers" then
net.value.domainnameservers.value = table.concat(value, " ", 3)
--elseif value[2] == "local-wpad-server" then
-- net.value.wpad.value = string.sub(value[3] or "", 2, -2)
end
elseif value[1] == "range" then
ranges = ranges + 1
if value[2] == "dynamic-bootp" then
net.value.leaserangestart.value = value[3] or ""
net.value.leaserangeend.value = value[4] or ""
else
net.value.leaserangestart.value = value[2] or ""
net.value.leaserangeend.value = value[3] or ""
end
-- We only support one pool per subnet
elseif value[1] == "pool" then
pools = pools + 1
for x,y in ipairs(value.sub or {}) do
if y[2] == "unknown-clients" then
net.value.unknownclients.value = y[1]
elseif y[1] == "range" then
ranges = ranges + 1
if y[2] == "dynamic-bootp" then
net.value.leaserangestart.value = y[3] or ""
net.value.leaserangeend.value = y[4] or ""
else
net.value.leaserangestart.value = y[2] or ""
net.value.leaserangeend.value = y[3] or ""
end
end
end
end
end
break
end
end
if pools > 1 or ranges > 1 then
net.value.subnet.errtxt = "Warning! This subnet contains multiple pool/range definitions. This is not supported by ACF. Saving may break functionality!"
end
return net
end
subnet_update = function( net )
local success, net = validate_subnet( net )
if not net.value.subnet.errtxt then
local previous_success = success
success = false
net.value.subnet.errtxt = "This subnet does not exist"
local subnets = get_subnets()
for i,subnet in ipairs(subnets.value) do
if subnet == net.value.subnet.value then
success = previous_success
net.value.subnet.errtxt = nil
break
end
end
end
if success then
subnet_write(net)
else
net.errtxt = "Failed to update subnet"
end
return net
end
subnet_create = function( net )
local success, net = validate_subnet(net)
if not net.value.subnet.errtxt then
local subnets = get_subnets()
for i,subnet in ipairs(subnets.value) do
if subnet == net.value.subnet.value then
success = false
net.value.subnet.errtxt = "This subnet already exists"
break
end
end
end
if success then
subnet_write(net)
else
net.errtxt = "Failed to create subnet"
end
return net
end
subnet_delete = function(name)
local file = fs.read_file(configfile) or ""
config = config or parseconfigfile(file)
local cmdresult = cfe({ value="Failed to delete subnet - not found", label="Delete subnet result" })
local subnets = get_subnets()
for i,subnet in ipairs(subnets.value) do
if subnet == name then
local start, endd = string.find(file, "subnet%s*"..replacemagiccharacters(name).."%s*netmask[^{]*{")
endd = find_section_end(file, endd)
endd = string.find(file, "\n", endd)
file = string.sub(file, 1, start-1) .. string.sub(file, endd+1, -1)
fs.write_file(configfile, string.gsub(file, "\n*$", ""))
config = nil
cmdresult.value = "Subnet Deleted"
end
end
return cmdresult
end
get_subnets = function ()
config = config or parseconfigfile(fs.read_file(configfile) or "")
local retval = {}
for i,entry in ipairs(config) do
if string.lower(entry[1] or "") == "subnet" then
table.insert(retval, entry[2])
end
end
return cfe({ type="list", value=retval, label="Subnet list" })
end
read_settings = function()
config = config or parseconfigfile(fs.read_file(configfile) or "")
local settings = {}
settings.domainname = cfe({ label="Domain Name" })
settings.domainnameservers = cfe({ label="Domain Name Servers", descr="Comma-separated addresses" })
settings.dnsupdatestyle = cfe({ type="select", label="DNS Update Style", option={"none", "ad-hoc", "interim"} })
settings.defleasetime = cfe({ label="Default Lease Time" })
settings.maxleasetime = cfe({ label="Maximum Lease Time" })
for i,value in ipairs(config) do
if value[1] == "option" then
if value[2] == "domain-name" then
settings.domainname.value = string.sub(value[3] or "", 2, -2)
elseif value[2] == "domain-name-servers" then
settings.domainnameservers.value = table.concat(value, " ", 3)
end
elseif value[1] == "default-lease-time" then
settings.defleasetime.value = value[2] or ""
elseif value[1] == "max-lease-time" then
settings.maxleasetime.value = value[2] or ""
elseif value[1] == "ddns-update-style" then
settings.dnsupdatestyle.value = value[2] or ""
end
end
return cfe({ type="group", value=settings, label = "Global settings" })
end
update_settings = function ( settings )
success, settings = validate_settings(settings)
if success then
local file = fs.read_file(configfile) or ""
config = config or parseconfigfile(file)
-- set up the lines we want to enter
if settings.value.domainname.value ~= "" then
settings.value.domainname.replace = 'option domain-name "'..settings.value.domainname.value..'"'
end
if settings.value.domainnameservers.value ~= "" then
settings.value.domainnameservers.replace = "option domain-name-servers "..settings.value.domainnameservers.value
end
settings.value.dnsupdatestyle.replace = "ddns-update-style "..settings.value.dnsupdatestyle.value
if settings.value.defleasetime.value ~= "" then
settings.value.defleasetime.replace = "default-lease-time "..settings.value.defleasetime.value
end
if settings.value.maxleasetime.value ~= "" then
settings.value.maxleasetime.replace = "max-lease-time "..settings.value.maxleasetime.value
end
-- replace existing lines
for i,value in ipairs(config) do
if value[1] == "option" then
if value[2] == "domain-name" then
file = replaceentry(file, value, settings.value.domainname.replace)
settings.value.domainname.replace = nil
elseif value[2] == "domain-name-servers" then
file = replaceentry(file, value, settings.value.domainnameservers.replace)
settings.value.domainnameservers.replace = nil
end
elseif value[1] == "ddns-update-style" then
file = replaceentry(file, value, settings.value.dnsupdatestyle.replace)
settings.value.dnsupdatestyle.replace = nil
elseif value[1] == "default-lease-time" then
file = replaceentry(file, value, settings.value.defleasetime.replace)
settings.value.defleasetime.replace = nil
elseif value[1] == "max-lease-time" then
file = replaceentry(file, value, settings.value.maxleasetime.replace)
settings.value.maxleasetime.replace = nil
end
end
-- add in new lines at the top if they didn't exist
local newlines = {}
newlines[#newlines+1] = settings.value.domainname.replace
settings.value.domainname.replace = nil
newlines[#newlines+1] = settings.value.domainnameservers.replace
settings.value.domainnameservers.replace = nil
newlines[#newlines+1] = settings.value.dnsupdatestyle.replace
settings.value.dnsupdatestyle.replace = nil
newlines[#newlines+1] = settings.value.defleasetime.replace
settings.value.defleasetime.replace = nil
newlines[#newlines+1] = settings.value.maxleasetime.replace
settings.value.maxleasetime.replace = nil
if #newlines > 0 then
newlines[#newlines+1] = file
file = table.concat(newlines, ";\n")
end
fs.write_file(configfile, string.gsub(file, "\n*$", ""))
config = nil
else
settings.errtxt = "Failed to update global settings"
end
return settings
end
getconfigfile = function()
return modelfunctions.getfiledetails(configfile)
end
setconfigfile = function(filedetails)
return modelfunctions.setfiledetails(filedetails, {configfile})
end
getleases = function()
return modelfunctions.getfiledetails(leasefile)
end
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