* luci/libs: add preliminary uvl code

[project/luci.git] / libs / uvl / luasrc / uvl / datatypes.lua

diff --git a/libs/uvl/luasrc/uvl/datatypes.lua b/libs/uvl/luasrc/uvl/datatypes.lua
new file mode 100644 (file)
index 0000000..586e3f8
--- /dev/null
+++ b/libs/uvl/luasrc/uvl/datatypes.lua
@@ -0,0 +1,135 @@
+--[[
+
+UCI Validation Layer - Datatype Tests
+(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
+(c) 2008 Steven Barth <steven@midlink.org>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+$Id$
+
+]]--
+
+module( "luci.uvl.datatypes", package.seeall )
+
+require("luci.fs")
+require("luci.ip")
+require("luci.util")
+
+
+function boolean( val )
+       if val == "1" or val == "yes" or val == "on" then
+               return true
+       elseif val == "0" or val == "no" or val == "off" then
+               return true
+       end
+
+       return false
+end
+
+function integer( val )
+       local n = tonumber(val)
+       if n ~= nil and math.floor(n) == n then
+               return true
+       end
+
+       return false
+end
+
+function float( val )
+       return ( tonumber(val) ~= nil )
+end
+
+function ip4addr( val )
+       if val then
+               return luci.ip.IPv4(val) and true or false
+       end
+
+       return false
+end
+
+function ip4prefix( val )
+       val = tonumber(val)
+       return ( val and val >= 0 and val <= 32 )
+end
+
+function ip6addr( val )
+       if val then
+               return luci.ip.IPv6(val) and true or false
+       end
+
+       return false
+end
+
+function ip6prefix( val )
+       val = tonumber(val)
+       return ( val and val >= 0 and val <= 128 )
+end
+
+function macaddr( val )
+       if val and val:match(
+               "^[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+:" ..
+                "[a-fA-F0-9]+:[a-fA-F0-9]+:[a-fA-F0-9]+$"
+       ) then
+               local parts = luci.util.split( val, ":" )
+
+               for i = 1,6 do
+                       parts[i] = tonumber( parts[i], 16 )
+                       if parts[i] < 0 or parts[i] > 255 then
+                               return false
+                       end
+               end
+
+               return true
+       end
+
+       return false
+end
+
+function hostname( val )
+       if val and val:match("[a-zA-Z0-9_][a-zA-Z0-9_%-%.]*") then
+               return true     -- XXX: ToDo: need better solution
+       end
+
+       return false
+end
+
+function string( val )
+       return true             -- Everything qualifies as valid string
+end
+
+function directory( val, seen )
+       local s = luci.fs.stat( val )
+       seen = seen or { }
+
+       if s and not seen[s.ino] then
+               seen[s.ino] = true
+               if s.type == "directory" then
+                       return true
+               elseif s.type == "link" then
+                       return directory( luci.fs.readlink(val), seen )
+               end
+       end
+
+       return false
+end
+
+function file( val, seen )
+       local s = luci.fs.stat( val )
+       seen = seen or { }
+
+       if s and not seen[s.ino] then
+               seen[s.ino] = true
+               if s.type == "regular" then
+                       return true
+               elseif s.type == "link" then
+                       return file( luci.fs.readlink(val), seen )
+               end
+       end
+
+       return false
+end