libs/web: allow one-character hostnames

[project/luci.git] / libs / web / luasrc / cbi / datatypes.lua

diff --git a/libs/web/luasrc/cbi/datatypes.lua b/libs/web/luasrc/cbi/datatypes.lua
index b543d9f..3c768ab 100644 (file)
--- a/libs/web/luasrc/cbi/datatypes.lua
+++ b/libs/web/luasrc/cbi/datatypes.lua
@@ -17,8 +17,8 @@ local fs = require "nixio.fs"
 local ip = require "luci.ip"
 local math = require "math"
 local util = require "luci.util"
+local tonumber, type = tonumber, type
 
-local tonumber = tonumber
 
 module "luci.cbi.datatypes"
 
@@ -66,6 +66,13 @@ function ipaddr(val)
        return ip4addr(val) or ip6addr(val)
 end
 
+function neg_ipaddr(v)
+       if type(v) == "string" then
+               v = v:gsub("^%s*!", "")
+       end
+       return v and ipaddr(v)
+end
+
 function ip4addr(val)
        if val then
                return ip.IPv4(val) and true or false
@@ -74,6 +81,13 @@ function ip4addr(val)
        return false
 end
 
+function neg_ip4addr(v)
+       if type(v) == "string" then
+               v = v:gsub("^%s*!", "")
+       end
+               return v and ip4addr(v)
+end
+
 function ip4prefix(val)
        val = tonumber(val)
        return ( val and val >= 0 and val <= 32 )
@@ -127,7 +141,10 @@ function macaddr(val)
 end
 
 function hostname(val)
-       if val and (#val < 254) and val.match(val, "^[a-zA-Z0-9][a-zA-Z0-9%-%.]*[a-zA-Z0-9]$") then
+       if val and (#val < 254) and (
+          val:match("^[a-zA-Z0-9]+$") or
+          val:match("^[a-zA-Z0-9][a-zA-Z0-9%-%.]*[a-zA-Z0-9]$")
+       ) then
                return true
        end
        return false
@@ -213,6 +230,13 @@ function uciname(val)
        return (val:match("^[a-zA-Z0-9_]+$") ~= nil)
 end
 
+function neg_network_ip4addr(val)
+       if type(v) == "string" then
+               v = v:gsub("^%s*!", "")
+               return (uciname(v) or ip4addr(v))
+       end     
+end
+
 function range(val, min, max)
        val = tonumber(val)
        min = tonumber(min)
@@ -224,3 +248,33 @@ function range(val, min, max)
 
        return false
 end
+
+function min(val, min)
+       val = tonumber(val)
+       min = tonumber(min)
+
+       if val ~= nil and min ~= nil then
+               return (val >= min)
+       end
+
+       return false
+end
+
+function max(val, max)
+       val = tonumber(val)
+       max = tonumber(max)
+
+       if val ~= nil and max ~= nil then
+               return (val <= max)
+       end
+
+       return false
+end
+
+function neg(val, what)
+       if what and type(_M[what]) == "function" then
+               return _M[what](val:gsub("^%s*!%s*", ""))
+       end
+
+       return false
+end