applications/wizard: Enforce hostname to conform to rfc952 and rfc1123

diff --git a/applications/luci-ffwizard/luasrc/model/cbi/ffwizard.lua b/applications/luci-ffwizard/luasrc/model/cbi/ffwizard.lua
index 0cc26e5..73ec41e 100644 (file)
--- a/applications/luci-ffwizard/luasrc/model/cbi/ffwizard.lua
+++ b/applications/luci-ffwizard/luasrc/model/cbi/ffwizard.lua
@@ -121,9 +121,7 @@ function hostname.write(self, section, value)
        uci:save("freifunk")
 end
 function hostname.validate(self, value)
-       if (#value > 16) then
-               return
-       elseif (string.find(value, "[^%w%_%-]")) then
+       if (#value > 24) or string.find(value, "[^%w%.%-]") or string.find(string.sub(value, value:len()), "[%.%-]") or string.find(string.sub(value, 1), "[%.%-]") then
                return
        else
                return value