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

   1 -- Copyright 2008 Steven Barth <steven@midlink.org>
   2 -- Copyright 2010-2012 Jo-Philipp Wich <jow@openwrt.org>
   3 -- Licensed to the public under the Apache License 2.0.
   4
   5 local ds = require "luci.dispatcher"
   6 local ft = require "luci.tools.firewall"
   7
   8 m = Map("firewall",
   9         translate("Firewall - Traffic Rules"),
  10         translate("Traffic rules define policies for packets traveling between \
  11                 different zones, for example to reject traffic between certain hosts \
  12                 or to open WAN ports on the router."))
  13
  14 --
  15 -- Rules
  16 --
  17
  18 s = m:section(TypedSection, "rule", translate("Traffic Rules"))
  19 s.addremove = true
  20 s.anonymous = true
  21 s.sortable  = true
  22 s.template = "cbi/tblsection"
  23 s.extedit   = ds.build_url("admin/network/firewall/rules/%s")
  24 s.defaults.target = "ACCEPT"
  25 s.template_addremove = "firewall/cbi_addrule"
  26
  27
  28 function s.create(self, section)
  29         created = TypedSection.create(self, section)
  30 end
  31
  32 function s.parse(self, ...)
  33         TypedSection.parse(self, ...)
  34
  35         local i_n = m:formvalue("_newopen.name")
  36         local i_p = m:formvalue("_newopen.proto")
  37         local i_e = m:formvalue("_newopen.extport")
  38         local i_x = m:formvalue("_newopen.submit")
  39
  40         local f_n = m:formvalue("_newfwd.name")
  41         local f_s = m:formvalue("_newfwd.src")
  42         local f_d = m:formvalue("_newfwd.dest")
  43         local f_x = m:formvalue("_newfwd.submit")
  44
  45         if i_x then
  46                 created = TypedSection.create(self, section)
  47
  48                 self.map:set(created, "target",    "ACCEPT")
  49                 self.map:set(created, "src",       "wan")
  50                 self.map:set(created, "proto",     (i_p ~= "other") and i_p or "all")
  51                 self.map:set(created, "dest_port", i_e)
  52                 self.map:set(created, "name",      i_n)
  53
  54                 if i_p ~= "other" and i_e and #i_e > 0 then
  55                         created = nil
  56                 end
  57
  58         elseif f_x then
  59                 created = TypedSection.create(self, section)
  60
  61                 self.map:set(created, "target", "ACCEPT")
  62                 self.map:set(created, "src",    f_s)
  63                 self.map:set(created, "dest",   f_d)
  64                 self.map:set(created, "name",   f_n)
  65         end
  66
  67         if created then
  68                 m.uci:save("firewall")
  69                 luci.http.redirect(ds.build_url(
  70                         "admin/network/firewall/rules", created
  71                 ))
  72         end
  73 end
  74
  75 ft.opt_name(s, DummyValue, translate("Name"))
  76
  77 local function rule_proto_txt(self, s)
  78         local f = self.map:get(s, "family")
  79         local p = ft.fmt_proto(self.map:get(s, "proto"),
  80                                self.map:get(s, "icmp_type")) or translate("traffic")
  81
  82         if f and f:match("4") then
  83                 return "%s-%s" %{ translate("IPv4"), p }
  84         elseif f and f:match("6") then
  85                 return "%s-%s" %{ translate("IPv6"), p }
  86         else
  87                 return "%s %s" %{ translate("Any"), p }
  88         end
  89 end
  90
  91 local function rule_src_txt(self, s)
  92         local z = ft.fmt_zone(self.map:get(s, "src"), translate("any zone"))
  93         local a = ft.fmt_ip(self.map:get(s, "src_ip"), translate("any host"))
  94         local p = ft.fmt_port(self.map:get(s, "src_port"))
  95         local m = ft.fmt_mac(self.map:get(s, "src_mac"))
  96
  97         if p and m then
  98                 return translatef("From %s in %s with source %s and %s", a, z, p, m)
  99         elseif p or m then
 100                 return translatef("From %s in %s with source %s", a, z, p or m)
 101         else
 102                 return translatef("From %s in %s", a, z)
 103         end
 104 end
 105
 106 local function rule_dest_txt(self, s)
 107         local z = ft.fmt_zone(self.map:get(s, "dest"))
 108         local p = ft.fmt_port(self.map:get(s, "dest_port"))
 109
 110         -- Forward
 111         if z then
 112                 local a = ft.fmt_ip(self.map:get(s, "dest_ip"), translate("any host"))
 113                 if p then
 114                         return translatef("To %s, %s in %s", a, p, z)
 115                 else
 116                         return translatef("To %s in %s", a, z)
 117                 end
 118
 119         -- Input
 120         else
 121                 local a = ft.fmt_ip(self.map:get(s, "dest_ip"),
 122                         translate("any router IP"))
 123
 124                 if p then
 125                         return translatef("To %s at %s on <var>this device</var>", a, p)
 126                 else
 127                         return translatef("To %s on <var>this device</var>", a)
 128                 end
 129         end
 130 end
 131
 132 local function snat_dest_txt(self, s)
 133         local z = ft.fmt_zone(self.map:get(s, "dest"), translate("any zone"))
 134         local a = ft.fmt_ip(self.map:get(s, "dest_ip"), translate("any host"))
 135         local p = ft.fmt_port(self.map:get(s, "dest_port")) or
 136                 ft.fmt_port(self.map:get(s, "src_dport"))
 137
 138         if p then
 139                 return translatef("To %s, %s in %s", a, p, z)
 140         else
 141                 return translatef("To %s in %s", a, z)
 142         end
 143 end
 144
 145
 146 match = s:option(DummyValue, "match", translate("Match"))
 147 match.rawhtml = true
 148 match.width   = "70%"
 149 function match.cfgvalue(self, s)
 150         return "<small>%s<br />%s<br />%s</small>" % {
 151                 rule_proto_txt(self, s),
 152                 rule_src_txt(self, s),
 153                 rule_dest_txt(self, s)
 154         }
 155 end
 156
 157 target = s:option(DummyValue, "target", translate("Action"))
 158 target.rawhtml = true
 159 target.width   = "20%"
 160 function target.cfgvalue(self, s)
 161         local t = ft.fmt_target(self.map:get(s, "target"), self.map:get(s, "dest"))
 162         local l = ft.fmt_limit(self.map:get(s, "limit"),
 163                 self.map:get(s, "limit_burst"))
 164
 165         if l then
 166                 return translatef("<var>%s</var> and limit to %s", t, l)
 167         else
 168                 return "<var>%s</var>" % t
 169         end
 170 end
 171
 172 ft.opt_enabled(s, Flag, translate("Enable")).width = "1%"
 173
 174
 175 --
 176 -- SNAT
 177 --
 178
 179 s = m:section(TypedSection, "redirect",
 180         translate("Source NAT"),
 181         translate("Source NAT is a specific form of masquerading which allows \
 182                 fine grained control over the source IP used for outgoing traffic, \
 183                 for example to map multiple WAN addresses to internal subnets."))
 184 s.template  = "cbi/tblsection"
 185 s.addremove = true
 186 s.anonymous = true
 187 s.sortable  = true
 188 s.extedit   = ds.build_url("admin/network/firewall/rules/%s")
 189 s.template_addremove = "firewall/cbi_addsnat"
 190
 191 function s.create(self, section)
 192         created = TypedSection.create(self, section)
 193 end
 194
 195 function s.parse(self, ...)
 196         TypedSection.parse(self, ...)
 197
 198         local n = m:formvalue("_newsnat.name")
 199         local s = m:formvalue("_newsnat.src")
 200         local d = m:formvalue("_newsnat.dest")
 201         local a = m:formvalue("_newsnat.dip")
 202         local p = m:formvalue("_newsnat.dport")
 203         local x = m:formvalue("_newsnat.submit")
 204
 205         if x and a and #a > 0 then
 206                 created = TypedSection.create(self, section)
 207
 208                 self.map:set(created, "target",    "SNAT")
 209                 self.map:set(created, "src",       s)
 210                 self.map:set(created, "dest",      d)
 211                 self.map:set(created, "proto",     "all")
 212                 self.map:set(created, "src_dip",   a)
 213                 self.map:set(created, "src_dport", p)
 214                 self.map:set(created, "name",      n)
 215         end
 216
 217         if created then
 218                 m.uci:save("firewall")
 219                 luci.http.redirect(ds.build_url(
 220                         "admin/network/firewall/rules", created
 221                 ))
 222         end
 223 end
 224
 225 function s.filter(self, sid)
 226         return (self.map:get(sid, "target") == "SNAT")
 227 end
 228
 229 ft.opt_name(s, DummyValue, translate("Name"))
 230
 231 match = s:option(DummyValue, "match", translate("Match"))
 232 match.rawhtml = true
 233 match.width   = "70%"
 234 function match.cfgvalue(self, s)
 235         return "<small>%s<br />%s<br />%s</small>" % {
 236                 rule_proto_txt(self, s),
 237                 rule_src_txt(self, s),
 238                 snat_dest_txt(self, s)
 239         }
 240 end
 241
 242 snat = s:option(DummyValue, "via", translate("Action"))
 243 snat.rawhtml = true
 244 snat.width   = "20%"
 245 function snat.cfgvalue(self, s)
 246         local a = ft.fmt_ip(self.map:get(s, "src_dip"))
 247         local p = ft.fmt_port(self.map:get(s, "src_dport"))
 248
 249         if a and p then
 250                 return translatef("Rewrite to source %s, %s", a, p)
 251         else
 252                 return translatef("Rewrite to source %s", a or p)
 253         end
 254 end
 255
 256 ft.opt_enabled(s, Flag, translate("Enable")).width = "1%"
 257
 258
 259 return m