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 fc3048e..3c768ab 100644 (file)
--- a/libs/web/luasrc/cbi/datatypes.lua
+++ b/libs/web/luasrc/cbi/datatypes.lua
@@ -141,7 +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