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 local tonumber, type, unpack, select = tonumber, type, unpack, select
  21
  22
  23 module "luci.cbi.datatypes"
  24
  25
  26 _M['or'] = function(v, ...)
  27         local i
  28         for i = 1, select('#', ...), 2 do
  29                 local f = select(i, ...)
  30                 local a = select(i+1, ...)
  31                 if type(f) ~= "function" then
  32                         if f == v then
  33                                 return true
  34                         end
  35                         i = i - 1
  36                 elseif f(v, unpack(a)) then
  37                         return true
  38                 end
  39         end
  40         return false
  41 end
  42
  43 _M['and'] = function(v, ...)
  44         local i
  45         for i = 1, select('#', ...), 2 do
  46                 local f = select(i, ...)
  47                 local a = select(i+1, ...)
  48                 if type(f) ~= "function" then
  49                         if f ~= v then
  50                                 return false
  51                         end
  52                         i = i - 1
  53                 elseif not f(v, unpack(a)) then
  54                         return false
  55                 end
  56         end
  57         return true
  58 end
  59
  60 function neg(v, ...)
  61         return _M['or'](v:gsub("^%s*!%s*", ""), ...)
  62 end
  63
  64 function list(v, subvalidator, subargs)
  65         if type(subvalidator) ~= "function" then
  66                 return false
  67         end
  68         local token
  69         for token in v:gmatch("%S+") do
  70                 if not subvalidator(token, unpack(subargs)) then
  71                         return false
  72                 end
  73         end
  74         return true
  75 end
  76
  77 function bool(val)
  78         if val == "1" or val == "yes" or val == "on" or val == "true" then
  79                 return true
  80         elseif val == "0" or val == "no" or val == "off" or val == "false" then
  81                 return true
  82         elseif val == "" or val == nil then
  83                 return true
  84         end
  85
  86         return false
  87 end
  88
  89 function uinteger(val)
  90         local n = tonumber(val)
  91         if n ~= nil and math.floor(n) == n and n >= 0 then
  92                 return true
  93         end
  94
  95         return false
  96 end
  97
  98 function integer(val)
  99         local n = tonumber(val)
 100         if n ~= nil and math.floor(n) == n then
 101                 return true
 102         end
 103
 104         return false
 105 end
 106
 107 function ufloat(val)
 108         local n = tonumber(val)
 109         return ( n ~= nil and n >= 0 )
 110 end
 111
 112 function float(val)
 113         return ( tonumber(val) ~= nil )
 114 end
 115
 116 function ipaddr(val)
 117         return ip4addr(val) or ip6addr(val)
 118 end
 119
 120 function ip4addr(val)
 121         if val then
 122                 return ip.IPv4(val) and true or false
 123         end
 124
 125         return false
 126 end
 127
 128 function ip4prefix(val)
 129         val = tonumber(val)
 130         return ( val and val >= 0 and val <= 32 )
 131 end
 132
 133 function ip6addr(val)
 134         if val then
 135                 return ip.IPv6(val) and true or false
 136         end
 137
 138         return false
 139 end
 140
 141 function ip6prefix(val)
 142         val = tonumber(val)
 143         return ( val and val >= 0 and val <= 128 )
 144 end
 145
 146 function port(val)
 147         val = tonumber(val)
 148         return ( val and val >= 0 and val <= 65535 )
 149 end
 150
 151 function portrange(val)
 152         local p1, p2 = val:match("^(%d+)%-(%d+)$")
 153         if p1 and p2 and port(p1) and port(p2) then
 154                 return true
 155         else
 156                 return port(val)
 157         end
 158 end
 159
 160 function macaddr(val)
 161         if val and val:match(
 162                 "^[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+:" ..
 163                  "[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+$"
 164         ) then
 165                 local parts = util.split( val, ":" )
 166
 167                 for i = 1,6 do
 168                         parts[i] = tonumber( parts[i], 16 )
 169                         if parts[i] < 0 or parts[i] > 255 then
 170                                 return false
 171                         end
 172                 end
 173
 174                 return true
 175         end
 176
 177         return false
 178 end
 179
 180 function hostname(val)
 181         if val and (#val < 254) and (
 182            val:match("^[a-zA-Z]+$") or
 183            (val:match("^[a-zA-Z0-9][a-zA-Z0-9%-%.]*[a-zA-Z0-9]$") and
 184             val:match("[^0-9%.]"))
 185         ) then
 186                 return true
 187         end
 188         return false
 189 end
 190
 191 function host(val)
 192         return hostname(val) or ipaddr(val)
 193 end
 194
 195 function network(val)
 196         return uciname(val) or host(val)
 197 end
 198
 199 function wpakey(val)
 200         if #val == 64 then
 201                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 202         else
 203                 return (#val >= 8) and (#val <= 63)
 204         end
 205 end
 206
 207 function wepkey(val)
 208         if val:sub(1, 2) == "s:" then
 209                 val = val:sub(3)
 210         end
 211
 212         if (#val == 10) or (#val == 26) then
 213                 return (val:match("^[a-fA-F0-9]+$") ~= nil)
 214         else
 215                 return (#val == 5) or (#val == 13)
 216         end
 217 end
 218
 219 function string(val)
 220         return true             -- Everything qualifies as valid string
 221 end
 222
 223 function directory( val, seen )
 224         local s = fs.stat(val)
 225         seen = seen or { }
 226
 227         if s and not seen[s.ino] then
 228                 seen[s.ino] = true
 229                 if s.type == "dir" then
 230                         return true
 231                 elseif s.type == "lnk" then
 232                         return directory( fs.readlink(val), seen )
 233                 end
 234         end
 235
 236         return false
 237 end
 238
 239 function file( val, seen )
 240         local s = fs.stat(val)
 241         seen = seen or { }
 242
 243         if s and not seen[s.ino] then
 244                 seen[s.ino] = true
 245                 if s.type == "reg" then
 246                         return true
 247                 elseif s.type == "lnk" then
 248                         return file( fs.readlink(val), seen )
 249                 end
 250         end
 251
 252         return false
 253 end
 254
 255 function device( val, seen )
 256         local s = fs.stat(val)
 257         seen = seen or { }
 258
 259         if s and not seen[s.ino] then
 260                 seen[s.ino] = true
 261                 if s.type == "chr" or s.type == "blk" then
 262                         return true
 263                 elseif s.type == "lnk" then
 264                         return device( fs.readlink(val), seen )
 265                 end
 266         end
 267
 268         return false
 269 end
 270
 271 function uciname(val)
 272         return (val:match("^[a-zA-Z0-9_]+$") ~= nil)
 273 end
 274
 275 function range(val, min, max)
 276         val = tonumber(val)
 277         min = tonumber(min)
 278         max = tonumber(max)
 279
 280         if val ~= nil and min ~= nil and max ~= nil then
 281                 return ((val >= min) and (val <= max))
 282         end
 283
 284         return false
 285 end
 286
 287 function min(val, min)
 288         val = tonumber(val)
 289         min = tonumber(min)
 290
 291         if val ~= nil and min ~= nil then
 292                 return (val >= min)
 293         end
 294
 295         return false
 296 end
 297
 298 function max(val, max)
 299         val = tonumber(val)
 300         max = tonumber(max)
 301
 302         if val ~= nil and max ~= nil then
 303                 return (val <= max)
 304         end
 305
 306         return false
 307 end
 308
 309 function phonedigit(val)
 310         return (val:match("^[0-9\*#]+$") ~= nil)
 311 end