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--[[
LuCI - Lua Configuration Interface
Copyright 2011 Jo-Philipp Wich <xm@subsignal.org>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
$Id$
]]--
module("luci.tools.firewall", package.seeall)
local ut = require "luci.util"
local ip = require "luci.ip"
local nx = require "nixio"
local translate, translatef = luci.i18n.translate, luci.i18n.translatef
function fmt_neg(x)
if type(x) == "string" then
local v, neg = x:gsub("^ *! *", "")
if neg > 0 then
return v, "%s " % translate("not")
else
return x, ""
end
end
return x, ""
end
function fmt_mac(x)
if x and #x > 0 then
local m, n
local l = { translate("MAC"), " " }
for m in ut.imatch(x) do
m, n = fmt_neg(m)
l[#l+1] = "<var>%s%s</var>" %{ n, m }
l[#l+1] = ", "
end
if #l > 1 then
l[#l] = nil
if #l > 3 then
l[1] = translate("MACs")
end
return table.concat(l, "")
end
end
end
function fmt_port(x, d)
if x and #x > 0 then
local p, n
local l = { translate("port"), " " }
for p in ut.imatch(x) do
p, n = fmt_neg(p)
local a, b = p:match("(%d+)%D+(%d+)")
if a and b then
l[1] = translate("ports")
l[#l+1] = "<var>%s%d-%d</var>" %{ n, a, b }
else
l[#l+1] = "<var>%s%d</var>" %{ n, p }
end
l[#l+1] = ", "
end
if #l > 1 then
l[#l] = nil
if #l > 3 then
l[1] = translate("ports")
end
return table.concat(l, "")
end
end
return d and "<var>%s</var>" % d
end
function fmt_ip(x, d)
if x and #x > 0 then
local l = { translate("IP"), " " }
local v, a, n
for v in ut.imatch(x) do
v, n = fmt_neg(v)
a, m = v:match("(%S+)/(%d+%.%S+)")
a = a or v
a = a:match(":") and ip.IPv6(a, m) or ip.IPv4(a, m)
if a and (a:is6() or a:prefix() < 32) then
l[1] = translate("IP range")
l[#l+1] = "<var title='%s - %s'>%s%s</var>" %{
a:minhost():string(),
a:maxhost():string(),
n, a:string()
}
else
l[#l+1] = "<var>%s%s</var>" %{
n,
a and a:string() or v
}
end
l[#l+1] = ", "
end
if #l > 1 then
l[#l] = nil
if #l > 3 then
l[1] = translate("IPs")
end
return table.concat(l, "")
end
end
return d and "<var>%s</var>" % d
end
function fmt_zone(x, d)
if x == "*" then
return "<var>%s</var>" % translate("any zone")
elseif x and #x > 0 then
return "<var>%s</var>" % x
elseif d then
return "<var>%s</var>" % d
end
end
function fmt_icmp_type(x)
if x and #x > 0 then
local t, v, n
local l = { translate("type"), " " }
for v in ut.imatch(x) do
v, n = fmt_neg(v)
l[#l+1] = "<var>%s%s</var>" %{ n, v }
l[#l+1] = ", "
end
if #l > 1 then
l[#l] = nil
if #l > 3 then
l[1] = translate("types")
end
return table.concat(l, "")
end
end
end
function fmt_proto(x, icmp_types)
if x and #x > 0 then
local v, n
local l = { }
local t = fmt_icmp_type(icmp_types)
for v in ut.imatch(x) do
v, n = fmt_neg(v)
if v == "tcpudp" then
l[#l+1] = "TCP"
l[#l+1] = "UDP"
l[#l+1] = ", "
elseif v ~= "all" then
local p = nx.getproto(v)
if p then
-- ICMP
if (p.proto == 1 or p.proto == 58) and t then
l[#l+1] = translatef(
"%s%s with %s",
n, p.aliases[1] or p.name, t
)
else
l[#l+1] = "%s%s" %{
n,
p.aliases[1] or p.name
}
end
l[#l+1] = ", "
end
end
end
if #l > 0 then
l[#l] = nil
return table.concat(l, "")
end
end
end
function fmt_limit(limit, burst)
burst = tonumber(burst)
if limit and #limit > 0 then
local l, u = limit:match("(%d+)/(%w+)")
l = tonumber(l or limit)
u = u or "second"
if l then
if u:match("^s") then
u = translate("second")
elseif u:match("^m") then
u = translate("minute")
elseif u:match("^h") then
u = translate("hour")
elseif u:match("^d") then
u = translate("day")
end
if burst and burst > 0 then
return translatef("<var>%d</var> pkts. per <var>%s</var>, \
burst <var>%d</var> pkts.", l, u, burst)
else
return translatef("<var>%d</var> pkts. per <var>%s</var>", l, u)
end
end
end
end
function fmt_target(x, dest)
if dest and #dest > 0 then
if x == "ACCEPT" then
return translate("Accept forward")
elseif x == "REJECT" then
return translate("Refuse forward")
elseif x == "NOTRACK" then
return translate("Do not track forward")
else --if x == "DROP" then
return translate("Discard forward")
end
else
if x == "ACCEPT" then
return translate("Accept input")
elseif x == "REJECT" then
return translate("Refuse input")
elseif x == "NOTRACK" then
return translate("Do not track input")
else --if x == "DROP" then
return translate("Discard input")
end
end
end
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