applications/luci-app-shadowsocks-libev/luasrc/model/shadowsocks-libev.lua

   1 -- Copyright 2017 Yousong Zhou <yszhou4tech@gmail.com>
   2 -- Licensed to the public under the Apache License 2.0.
   3
   4 local _up = getfenv(3)
   5 local ut = require("luci.util")
   6 local sys = require("luci.sys")
   7 local ds = require("luci.dispatcher")
   8 local nw = require("luci.model.network")
   9 nw.init()
  10 module("luci.model.shadowsocks-libev", function(m)
  11         setmetatable(m, {__index=function (self, k)
  12                 local tb = _up
  13                 return rawget(self, k) or _up[k]
  14         end})
  15 end)
  16
  17 function values_actions(o)
  18         o:value("bypass")
  19         o:value("forward")
  20         if o.option ~= "dst_default" then
  21                 o:value("checkdst")
  22         end
  23 end
  24
  25 function values_redir(o, xmode)
  26         o.map.uci.foreach("shadowsocks-libev", "ss_redir", function(sdata)
  27                 local disabled = ucival_to_bool(sdata["disabled"])
  28                 local sname = sdata[".name"]
  29                 local mode = sdata["mode"] or "tcp_only"
  30                 if not disabled and mode:find(xmode) then
  31                         local desc = "%s - %s" % {sname, mode}
  32                         o:value(sname, desc)
  33                 end
  34         end)
  35         o:value("", "<unset>")
  36         o.default = ""
  37 end
  38
  39 function values_serverlist(o)
  40         o.map.uci.foreach("shadowsocks-libev", "server", function(sdata)
  41                 local sname = sdata[".name"]
  42                 local server = sdata["server"]
  43                 local server_port = sdata["server_port"]
  44                 if server and server_port then
  45                         local desc = "%s - %s:%s" % {sname, sdata["server"], sdata["server_port"]}
  46                         o:value(sname, desc)
  47                 end
  48         end)
  49 end
  50
  51 function values_ipaddr(o)
  52         for _, v in ipairs(nw:get_interfaces()) do
  53                 for _, a in ipairs(v:ipaddrs()) do
  54                         o:value(a:host():string(), '%s (%s)' %{ a:host(), v:shortname() })
  55                 end
  56         end
  57 end
  58
  59 function values_ifnames(o)
  60         for _, v in ipairs(sys.net.devices()) do
  61                 o:value(v)
  62         end
  63 end
  64
  65 function options_client(s, tab)
  66         local o
  67
  68         o = s:taboption(tab, ListValue, "server", translate("Remote server"))
  69         values_serverlist(o)
  70         o = s:taboption(tab, Value, "local_address", translate("Local address"))
  71         o.datatype = "ipaddr"
  72         o.placeholder = "0.0.0.0"
  73         values_ipaddr(o)
  74         o = s:taboption(tab, Value, "local_port", translate("Local port"))
  75         o.datatype = "port"
  76 end
  77
  78 function options_server(s, tab)
  79         local o
  80         local optfunc
  81
  82         if tab == nil then
  83                 optfunc = function(...) return s:option(...) end
  84         else
  85                 optfunc = function(...) return s:taboption(tab, ...) end
  86         end
  87
  88         o = optfunc(Value, "server", translate("Server"))
  89         o.datatype = "host"
  90         o.size = 16
  91         o = optfunc(Value, "server_port", translate("Server port"))
  92         o.datatype = "port"
  93         o.size = 5
  94         o = optfunc(ListValue, "method", translate("Method"))
  95         for _, m in ipairs(methods) do
  96                 o:value(m)
  97         end
  98         o = optfunc(Value, "key", translate("Key (base64 encoding)"))
  99         o.datatype = "base64"
 100         o.password = true
 101         o.size = 12
 102         o = optfunc(Value, "password", translate("Password"))
 103         o.password = true
 104         o.size = 12
 105 end
 106
 107 function options_common(s, tab)
 108         local o
 109
 110         o = s:taboption(tab, ListValue, "mode", translate("Mode of operation"))
 111         for _, m in ipairs(modes) do
 112                 o:value(m)
 113         end
 114         o.default = "tcp_and_udp"
 115         o = s:taboption(tab, Value, "mtu", translate("MTU"))
 116         o.datatype = "uinteger"
 117         o = s:taboption(tab, Value, "timeout", translate("Timeout (sec)"))
 118         o.datatype = "uinteger"
 119         s:taboption(tab, Value, "user", translate("Run as"))
 120
 121         s:taboption(tab, Flag, "verbose", translate("Verbose"))
 122         s:taboption(tab, Flag, "ipv6_first", translate("IPv6 First"), translate("Prefer IPv6 addresses when resolving names"))
 123         s:taboption(tab, Flag, "fast_open", translate("Enable TCP Fast Open"))
 124         s:taboption(tab, Flag, "reuse_port", translate("Enable SO_REUSEPORT"))
 125 end
 126
 127 function ucival_to_bool(val)
 128         return val == "true" or val == "1" or val == "yes" or val == "on"
 129 end
 130
 131 function cfgvalue_overview(sdata)
 132         local stype = sdata[".type"]
 133         local lines  = {}
 134
 135         if stype == "ss_server" then
 136                 cfgvalue_overview_(sdata, lines, names_options_server)
 137                 cfgvalue_overview_(sdata, lines, names_options_common)
 138                 cfgvalue_overview_(sdata, lines, {
 139                         "bind_address",
 140                         "manager_address",
 141                 })
 142         elseif stype == "ss_local" or stype == "ss_redir" or stype == "ss_tunnel" then
 143                 cfgvalue_overview_(sdata, lines, names_options_client)
 144                 if stype == "ss_tunnel" then
 145                         cfgvalue_overview_(sdata, lines, {"tunnel_address"})
 146                 elseif stype == "ss_redir" then
 147                         cfgvalue_overview_(sdata, lines, {"disable_sni"})
 148                 end
 149                 cfgvalue_overview_(sdata, lines, names_options_common)
 150         else
 151                 return nil, nil
 152         end
 153         local sname = sdata[".name"]
 154         local key = "%s.%s" % {stype, sname}
 155         local value = {
 156                 [".name"] = sname,
 157                 name = '%s.<var>%s</var>' % {stype, sname},
 158                 overview = table.concat(lines, "</br>"),
 159                 disabled = ucival_to_bool(sdata["disabled"]),
 160         }
 161         return key, value
 162 end
 163
 164 function cfgvalue_overview_(sdata, lines, names)
 165         local line
 166
 167         for _, n in ipairs(names) do
 168                 local v = sdata[n]
 169                 if v ~= nil then
 170                         if n == "key" or n == "password" then
 171                                 v = translate("<hidden>")
 172                         end
 173                         local fv = "<var>%s</var>" % ut.pcdata(v)
 174                         if sdata[".type"] ~= "ss_server" and n == "server" then
 175                                 fv = '<a class="label" href="%s">%s</a>' % {
 176                                         ds.build_url("admin/services/shadowsocks-libev/servers", v), fv}
 177                         end
 178                         line = n .. ": " .. fv
 179                         table.insert(lines, line)
 180                 end
 181         end
 182 end
 183
 184 function option_install_package(s, tab)
 185         local bin = s.sectiontype:gsub("_", "-", 1)
 186         local installed = nixio.fs.access("/usr/bin/" .. bin)
 187         if installed then
 188                 return
 189         end
 190         local opkg_package = "shadowsocks-libev-" .. bin
 191         local p_install
 192         if tab then
 193                 p_install = s:taboption(tab, Button, "_install")
 194         else
 195                 p_install = s:option(Button, "_install")
 196         end
 197         p_install.title      = translate("Package is not installed")
 198         p_install.inputtitle = translate("Install package %q" % opkg_package)
 199         p_install.inputstyle = "apply"
 200
 201         function p_install.write()
 202                 return luci.http.redirect(
 203                         luci.dispatcher.build_url("admin/system/packages") ..
 204                         "?submit=1&install=%s" % opkg_package
 205                 )
 206         end
 207 end
 208
 209 names_options_server = {
 210         "server",
 211         "server_port",
 212         "method",
 213         "key",
 214         "password",
 215 }
 216
 217 names_options_client = {
 218         "server",
 219         "local_address",
 220         "local_port",
 221 }
 222
 223 names_options_common = {
 224         "verbose",
 225         "ipv6_first",
 226         "fast_open",
 227         "reuse_port",
 228         "mode",
 229         "mtu",
 230         "timeout",
 231         "user",
 232 }
 233
 234 modes = {
 235         "tcp_only",
 236         "tcp_and_udp",
 237         "udp_only",
 238 }
 239
 240 methods = {
 241         -- aead
 242         "aes-128-gcm",
 243         "aes-192-gcm",
 244         "aes-256-gcm",
 245         "chacha20-ietf-poly1305",
 246         "xchacha20-ietf-poly1305",
 247         -- stream
 248         "table",
 249         "rc4",
 250         "rc4-md5",
 251         "aes-128-cfb",
 252         "aes-192-cfb",
 253         "aes-256-cfb",
 254         "aes-128-ctr",
 255         "aes-192-ctr",
 256         "aes-256-ctr",
 257         "bf-cfb",
 258         "camellia-128-cfb",
 259         "camellia-192-cfb",
 260         "camellia-256-cfb",
 261         "salsa20",
 262         "chacha20",
 263         "chacha20-ietf",
 264 }