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 >= 1 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:match("[a-zA-Z0-9_][a-zA-Z0-9_%-%.]*") then
 131                 return true     -- XXX: ToDo: need better solution
 132         end
 133
 134         return false
 135 end
 136
 137 function host(val)
 138         return hostname(val) or ipaddr(val)
 139 end
 140
 141 function wpakey(val)
 142         if #val == 64 then
 143                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 144         else
 145                 return (#val >= 8) and (#val <= 63)
 146         end
 147 end
 148
 149 function wepkey(val)
 150         if val:sub(1, 2) == "s:" then
 151                 val = val:sub(3)
 152         end
 153
 154         if (#val == 10) or (#val == 26) then
 155                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 156         else
 157                 return (#val == 5) or (#val == 13)
 158         end
 159 end
 160
 161 function string(val)
 162         return true             -- Everything qualifies as valid string
 163 end
 164
 165 function directory( val, seen )
 166         local s = fs.stat(val)
 167         seen = seen or { }
 168
 169         if s and not seen[s.ino] then
 170                 seen[s.ino] = true
 171                 if s.type == "dir" then
 172                         return true
 173                 elseif s.type == "lnk" then
 174                         return directory( fs.readlink(val), seen )
 175                 end
 176         end
 177
 178         return false
 179 end
 180
 181 function file( val, seen )
 182         local s = fs.stat(val)
 183         seen = seen or { }
 184
 185         if s and not seen[s.ino] then
 186                 seen[s.ino] = true
 187                 if s.type == "reg" then
 188                         return true
 189                 elseif s.type == "lnk" then
 190                         return file( fs.readlink(val), seen )
 191                 end
 192         end
 193
 194         return false
 195 end
 196
 197 function device( val, seen )
 198         local s = fs.stat(val)
 199         seen = seen or { }
 200
 201         if s and not seen[s.ino] then
 202                 seen[s.ino] = true
 203                 if s.type == "chr" or s.type == "blk" then
 204                         return true
 205                 elseif s.type == "lnk" then
 206                         return device( fs.readlink(val), seen )
 207                 end
 208         end
 209
 210         return false
 211 end
 212
 213 function uciname(val)
 214         return (val:match("^[a-zA-Z0-9_]+$") ~= nil)
 215 end
 216
 217 function range(val, min, max)
 218         val = tonumber(val)
 219         min = tonumber(min)
 220         max = tonumber(max)
 221
 222         if val ~= nil and min ~= nil and max ~= nil then
 223                 return ((val >= min) and (val <= max))
 224         end
 225
 226         return false
 227 end