* luci/libs: added Hex() constructor to luci.ip

[project/luci.git] / libs / core / luasrc / ip.lua

diff --git a/libs/core/luasrc/ip.lua b/libs/core/luasrc/ip.lua
index ea243f9..15730db 100644 (file)
--- a/libs/core/luasrc/ip.lua
+++ b/libs/core/luasrc/ip.lua
@@ -46,6 +46,14 @@ local function __mask16(bits)
        )
 end
 
+local function __length(family)
+       if family == FAMILY_INET4 then
+               return 32
+       else
+               return 128
+       end
+end
+
 -- htons(), htonl(), ntohs(), ntohl()
 
 function htons(x)
@@ -190,6 +198,35 @@ function IPv6(address, netmask)
        end
 end
 
+function Hex( hex, prefix, family, swap )
+       family = ( family ~= nil ) and family or FAMILY_INET4
+       swap   = ( swap   == nil ) and true   or swap
+       prefix = prefix or __length(family)
+
+       local len  = __length(family)
+       local tmp  = ""
+       local data = { }
+
+       for i = 1, (len/4) - #hex do tmp = tmp .. '0' end
+
+       if swap and LITTLE_ENDIAN then
+               for i = #hex, 1, -2 do tmp = tmp .. hex:sub( i - 1, i ) end
+       end
+
+       hex = tmp
+
+       for i = 1, ( len / 4 ), 4 do
+               local n = tonumber( hex:sub( i, i+3 ), 16 )
+               if n then
+                       table.insert( data, n )
+               else
+                       return nil
+               end
+       end
+
+       return __bless({ family, data, len })
+end
+
 
 cidr = luci.util.class()
 
@@ -296,11 +333,11 @@ function cidr.network( self )
                table.insert( data, 0 )
        end
 
-       return __bless({ self[1], data, self:is4() and 32 or 128 })
+       return __bless({ self[1], data, __length(self[1]) })
 end
 
 function cidr.host( self )
-       return __bless({ self[1], data, self:is4() and 32 or 128 })
+       return __bless({ self[1], data, __length(self[1]) })
 end
 
 function cidr.mask( self, bits )
@@ -317,7 +354,7 @@ function cidr.mask( self, bits )
                table.insert( data, 0 )
        end
 
-       return __bless({ self[1], data, self:is4() and 32 or 128 })
+       return __bless({ self[1], data, __length(self[1]) })
 end
 
 function cidr.contains( self, addr )