libs/web/luasrc/cbi/datatypes.lua

   1 --[[
   2
   3 LuCI - Configuration Bind Interface - Datatype Tests
   4 (c) 2010 Jo-Philipp Wich <xm@subsignal.org>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 $Id$
  13
  14 ]]--
  15
  16 local fs = require "nixio.fs"
  17 local ip = require "luci.ip"
  18 local math = require "math"
  19 local util = require "luci.util"
  20
  21 local tonumber = tonumber
  22
  23 module "luci.cbi.datatypes"
  24
  25
  26 function bool(val)
  27         if val == "1" or val == "yes" or val == "on" or val == "true" then
  28                 return true
  29         elseif val == "0" or val == "no" or val == "off" or val == "false" then
  30                 return true
  31         elseif val == "" or val == nil then
  32                 return true
  33         end
  34
  35         return false
  36 end
  37
  38 function uinteger(val)
  39         local n = tonumber(val)
  40         if n ~= nil and math.floor(n) == n and n >= 0 then
  41                 return true
  42         end
  43
  44         return false
  45 end
  46
  47 function integer(val)
  48         local n = tonumber(val)
  49         if n ~= nil and math.floor(n) == n then
  50                 return true
  51         end
  52
  53         return false
  54 end
  55
  56 function ufloat(val)
  57         local n = tonumber(val)
  58         return ( n ~= nil and n >= 0 )
  59 end
  60
  61 function float(val)
  62         return ( tonumber(val) ~= nil )
  63 end
  64
  65 function ipaddr(val)
  66         return ip4addr(val) or ip6addr(val)
  67 end
  68
  69 function ip4addr(val)
  70         if val then
  71                 return ip.IPv4(val) and true or false
  72         end
  73
  74         return false
  75 end
  76
  77 function ip4prefix(val)
  78         val = tonumber(val)
  79         return ( val and val >= 0 and val <= 32 )
  80 end
  81
  82 function ip6addr(val)
  83         if val then
  84                 return ip.IPv6(val) and true or false
  85         end
  86
  87         return false
  88 end
  89
  90 function ip6prefix(val)
  91         val = tonumber(val)
  92         return ( val and val >= 0 and val <= 128 )
  93 end
  94
  95 function port(val)
  96         val = tonumber(val)
  97         return ( val and val >= 0 and val <= 65535 )
  98 end
  99
 100 function portrange(val)
 101         local p1, p2 = val:match("^(%d+)%-(%d+)$")
 102         if p1 and p2 and port(p1) and port(p2) then
 103                 return true
 104         else
 105                 return port(val)
 106         end
 107 end
 108
 109 function macaddr(val)
 110         if val and val:match(
 111                 "^[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+:" ..
 112                  "[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+$"
 113         ) then
 114                 local parts = util.split( val, ":" )
 115
 116                 for i = 1,6 do
 117                         parts[i] = tonumber( parts[i], 16 )
 118                         if parts[i] < 0 or parts[i] > 255 then
 119                                 return false
 120                         end
 121                 end
 122
 123                 return true
 124         end
 125
 126         return false
 127 end
 128
 129 function hostname(val)
 130         if val and (#val < 254) and val.match(val, "^[a-zA-Z0-9][a-zA-Z0-9%-%.]*[a-zA-Z0-9]$") then
 131                 return true
 132         end
 133         return false
 134 end
 135
 136 function host(val)
 137         return hostname(val) or ipaddr(val)
 138 end
 139
 140 function wpakey(val)
 141         if #val == 64 then
 142                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 143         else
 144                 return (#val >= 8) and (#val <= 63)
 145         end
 146 end
 147
 148 function wepkey(val)
 149         if val:sub(1, 2) == "s:" then
 150                 val = val:sub(3)
 151         end
 152
 153         if (#val == 10) or (#val == 26) then
 154                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 155         else
 156                 return (#val == 5) or (#val == 13)
 157         end
 158 end
 159
 160 function string(val)
 161         return true             -- Everything qualifies as valid string
 162 end
 163
 164 function directory( val, seen )
 165         local s = fs.stat(val)
 166         seen = seen or { }
 167
 168         if s and not seen[s.ino] then
 169                 seen[s.ino] = true
 170                 if s.type == "dir" then
 171                         return true
 172                 elseif s.type == "lnk" then
 173                         return directory( fs.readlink(val), seen )
 174                 end
 175         end
 176
 177         return false
 178 end
 179
 180 function file( val, seen )
 181         local s = fs.stat(val)
 182         seen = seen or { }
 183
 184         if s and not seen[s.ino] then
 185                 seen[s.ino] = true
 186                 if s.type == "reg" then
 187                         return true
 188                 elseif s.type == "lnk" then
 189                         return file( fs.readlink(val), seen )
 190                 end
 191         end
 192
 193         return false
 194 end
 195
 196 function device( val, seen )
 197         local s = fs.stat(val)
 198         seen = seen or { }
 199
 200         if s and not seen[s.ino] then
 201                 seen[s.ino] = true
 202                 if s.type == "chr" or s.type == "blk" then
 203                         return true
 204                 elseif s.type == "lnk" then
 205                         return device( fs.readlink(val), seen )
 206                 end
 207         end
 208
 209         return false
 210 end
 211
 212 function uciname(val)
 213         return (val:match("^[a-zA-Z0-9_]+$") ~= nil)
 214 end
 215
 216 function range(val, min, max)
 217         val = tonumber(val)
 218         min = tonumber(min)
 219         max = tonumber(max)
 220
 221         if val ~= nil and min ~= nil and max ~= nil then
 222                 return ((val >= min) and (val <= max))
 223         end
 224
 225         return false
 226 end