applications/luci-app-firewall/luasrc/model/cbi/firewall/rules.lua

   1 --[[
   2 LuCI - Lua Configuration Interface
   3
   4 Copyright 2008 Steven Barth <steven@midlink.org>
   5 Copyright 2010-2012 Jo-Philipp Wich <xm@subsignal.org>
   6
   7 Licensed under the Apache License, Version 2.0 (the "License");
   8 you may not use this file except in compliance with the License.
   9 You may obtain a copy of the License at
  10
  11         http://www.apache.org/licenses/LICENSE-2.0
  12
  13 ]]--
  14
  15 local ds = require "luci.dispatcher"
  16 local ft = require "luci.tools.firewall"
  17
  18 m = Map("firewall",
  19         translate("Firewall - Traffic Rules"),
  20         translate("Traffic rules define policies for packets traveling between \
  21                 different zones, for example to reject traffic between certain hosts \
  22                 or to open WAN ports on the router."))
  23
  24 --
  25 -- Rules
  26 --
  27
  28 s = m:section(TypedSection, "rule", translate("Traffic Rules"))
  29 s.addremove = true
  30 s.anonymous = true
  31 s.sortable  = true
  32 s.template = "cbi/tblsection"
  33 s.extedit   = ds.build_url("admin/network/firewall/rules/%s")
  34 s.defaults.target = "ACCEPT"
  35 s.template_addremove = "firewall/cbi_addrule"
  36
  37
  38 function s.create(self, section)
  39         created = TypedSection.create(self, section)
  40 end
  41
  42 function s.parse(self, ...)
  43         TypedSection.parse(self, ...)
  44
  45         local i_n = m:formvalue("_newopen.name")
  46         local i_p = m:formvalue("_newopen.proto")
  47         local i_e = m:formvalue("_newopen.extport")
  48         local i_x = m:formvalue("_newopen.submit")
  49
  50         local f_n = m:formvalue("_newfwd.name")
  51         local f_s = m:formvalue("_newfwd.src")
  52         local f_d = m:formvalue("_newfwd.dest")
  53         local f_x = m:formvalue("_newfwd.submit")
  54
  55         if i_x then
  56                 created = TypedSection.create(self, section)
  57
  58                 self.map:set(created, "target",    "ACCEPT")
  59                 self.map:set(created, "src",       "wan")
  60                 self.map:set(created, "proto",     (i_p ~= "other") and i_p or "all")
  61                 self.map:set(created, "dest_port", i_e)
  62                 self.map:set(created, "name",      i_n)
  63
  64                 if i_p ~= "other" and i_e and #i_e > 0 then
  65                         created = nil
  66                 end
  67
  68         elseif f_x then
  69                 created = TypedSection.create(self, section)
  70
  71                 self.map:set(created, "target", "ACCEPT")
  72                 self.map:set(created, "src",    f_s)
  73                 self.map:set(created, "dest",   f_d)
  74                 self.map:set(created, "name",   f_n)
  75         end
  76
  77         if created then
  78                 m.uci:save("firewall")
  79                 luci.http.redirect(ds.build_url(
  80                         "admin/network/firewall/rules", created
  81                 ))
  82         end
  83 end
  84
  85 ft.opt_name(s, DummyValue, translate("Name"))
  86
  87 local function rule_proto_txt(self, s)
  88         local f = self.map:get(s, "family")
  89         local p = ft.fmt_proto(self.map:get(s, "proto"),
  90                                self.map:get(s, "icmp_type")) or translate("traffic")
  91
  92         if f and f:match("4") then
  93                 return "%s-%s" %{ translate("IPv4"), p }
  94         elseif f and f:match("6") then
  95                 return "%s-%s" %{ translate("IPv6"), p }
  96         else
  97                 return "%s %s" %{ translate("Any"), p }
  98         end
  99 end
 100
 101 local function rule_src_txt(self, s)
 102         local z = ft.fmt_zone(self.map:get(s, "src"), translate("any zone"))
 103         local a = ft.fmt_ip(self.map:get(s, "src_ip"), translate("any host"))
 104         local p = ft.fmt_port(self.map:get(s, "src_port"))
 105         local m = ft.fmt_mac(self.map:get(s, "src_mac"))
 106
 107         if p and m then
 108                 return translatef("From %s in %s with source %s and %s", a, z, p, m)
 109         elseif p or m then
 110                 return translatef("From %s in %s with source %s", a, z, p or m)
 111         else
 112                 return translatef("From %s in %s", a, z)
 113         end
 114 end
 115
 116 local function rule_dest_txt(self, s)
 117         local z = ft.fmt_zone(self.map:get(s, "dest"))
 118         local p = ft.fmt_port(self.map:get(s, "dest_port"))
 119
 120         -- Forward
 121         if z then
 122                 local a = ft.fmt_ip(self.map:get(s, "dest_ip"), translate("any host"))
 123                 if p then
 124                         return translatef("To %s, %s in %s", a, p, z)
 125                 else
 126                         return translatef("To %s in %s", a, z)
 127                 end
 128
 129         -- Input
 130         else
 131                 local a = ft.fmt_ip(self.map:get(s, "dest_ip"),
 132                         translate("any router IP"))
 133
 134                 if p then
 135                         return translatef("To %s at %s on <var>this device</var>", a, p)
 136                 else
 137                         return translatef("To %s on <var>this device</var>", a)
 138                 end
 139         end
 140 end
 141
 142 local function snat_dest_txt(self, s)
 143         local z = ft.fmt_zone(self.map:get(s, "dest"), translate("any zone"))
 144         local a = ft.fmt_ip(self.map:get(s, "dest_ip"), translate("any host"))
 145         local p = ft.fmt_port(self.map:get(s, "dest_port")) or
 146                 ft.fmt_port(self.map:get(s, "src_dport"))
 147
 148         if p then
 149                 return translatef("To %s, %s in %s", a, p, z)
 150         else
 151                 return translatef("To %s in %s", a, z)
 152         end
 153 end
 154
 155
 156 match = s:option(DummyValue, "match", translate("Match"))
 157 match.rawhtml = true
 158 match.width   = "70%"
 159 function match.cfgvalue(self, s)
 160         return "<small>%s<br />%s<br />%s</small>" % {
 161                 rule_proto_txt(self, s),
 162                 rule_src_txt(self, s),
 163                 rule_dest_txt(self, s)
 164         }
 165 end
 166
 167 target = s:option(DummyValue, "target", translate("Action"))
 168 target.rawhtml = true
 169 target.width   = "20%"
 170 function target.cfgvalue(self, s)
 171         local t = ft.fmt_target(self.map:get(s, "target"), self.map:get(s, "dest"))
 172         local l = ft.fmt_limit(self.map:get(s, "limit"),
 173                 self.map:get(s, "limit_burst"))
 174
 175         if l then
 176                 return translatef("<var>%s</var> and limit to %s", t, l)
 177         else
 178                 return "<var>%s</var>" % t
 179         end
 180 end
 181
 182 ft.opt_enabled(s, Flag, translate("Enable")).width = "1%"
 183
 184
 185 --
 186 -- SNAT
 187 --
 188
 189 s = m:section(TypedSection, "redirect",
 190         translate("Source NAT"),
 191         translate("Source NAT is a specific form of masquerading which allows \
 192                 fine grained control over the source IP used for outgoing traffic, \
 193                 for example to map multiple WAN addresses to internal subnets."))
 194 s.template  = "cbi/tblsection"
 195 s.addremove = true
 196 s.anonymous = true
 197 s.sortable  = true
 198 s.extedit   = ds.build_url("admin/network/firewall/rules/%s")
 199 s.template_addremove = "firewall/cbi_addsnat"
 200
 201 function s.create(self, section)
 202         created = TypedSection.create(self, section)
 203 end
 204
 205 function s.parse(self, ...)
 206         TypedSection.parse(self, ...)
 207
 208         local n = m:formvalue("_newsnat.name")
 209         local s = m:formvalue("_newsnat.src")
 210         local d = m:formvalue("_newsnat.dest")
 211         local a = m:formvalue("_newsnat.dip")
 212         local p = m:formvalue("_newsnat.dport")
 213         local x = m:formvalue("_newsnat.submit")
 214
 215         if x and a and #a > 0 then
 216                 created = TypedSection.create(self, section)
 217
 218                 self.map:set(created, "target",    "SNAT")
 219                 self.map:set(created, "src",       s)
 220                 self.map:set(created, "dest",      d)
 221                 self.map:set(created, "proto",     "all")
 222                 self.map:set(created, "src_dip",   a)
 223                 self.map:set(created, "src_dport", p)
 224                 self.map:set(created, "name",      n)
 225         end
 226
 227         if created then
 228                 m.uci:save("firewall")
 229                 luci.http.redirect(ds.build_url(
 230                         "admin/network/firewall/rules", created
 231                 ))
 232         end
 233 end
 234
 235 function s.filter(self, sid)
 236         return (self.map:get(sid, "target") == "SNAT")
 237 end
 238
 239 ft.opt_name(s, DummyValue, translate("Name"))
 240
 241 match = s:option(DummyValue, "match", translate("Match"))
 242 match.rawhtml = true
 243 match.width   = "70%"
 244 function match.cfgvalue(self, s)
 245         return "<small>%s<br />%s<br />%s</small>" % {
 246                 rule_proto_txt(self, s),
 247                 rule_src_txt(self, s),
 248                 snat_dest_txt(self, s)
 249         }
 250 end
 251
 252 snat = s:option(DummyValue, "via", translate("Action"))
 253 snat.rawhtml = true
 254 snat.width   = "20%"
 255 function snat.cfgvalue(self, s)
 256         local a = ft.fmt_ip(self.map:get(s, "src_dip"))
 257         local p = ft.fmt_port(self.map:get(s, "src_dport"))
 258
 259         if a and p then
 260                 return translatef("Rewrite to source %s, %s", a, p)
 261         else
 262                 return translatef("Rewrite to source %s", a or p)
 263         end
 264 end
 265
 266 ft.opt_enabled(s, Flag, translate("Enable")).width = "1%"
 267
 268
 269 return m