modules/admin-{mini,full}: prevent crash in iface overview page if ifconfig does...

[project/luci.git] / modules / admin-full / luasrc / model / cbi / admin_network / network.lua

diff --git a/modules/admin-full/luasrc/model/cbi/admin_network/network.lua b/modules/admin-full/luasrc/model/cbi/admin_network/network.lua
index 8d34fa7cfff740be4c39e2392ee94e8c450e9213..2dc9e9b43aae91220eaddf26f1231a9b3a726090 100644 (file)
--- a/modules/admin-full/luasrc/model/cbi/admin_network/network.lua
+++ b/modules/admin-full/luasrc/model/cbi/admin_network/network.lua
@@ -86,9 +86,18 @@ end
 hwaddr = s:option(DummyValue, "_hwaddr")
 function hwaddr.cfgvalue(self, section)
        local ix = self.map:get(section, "ifname") or ""
-       return fs.readfile("/sys/class/net/" .. ix .. "/address")
-        or luci.util.exec("ifconfig " .. ix):match(" ([A-F0-9:]+)%s*\n")
-        or "n/a"
+       local mac = fs.readfile("/sys/class/net/" .. ix .. "/address")
+
+       if not mac then
+               mac = luci.util.exec("ifconfig " .. ix)
+               mac = mac and mac:match(" ([A-F0-9:]+)%s*\n")
+       end
+
+       if mac and #mac > 0 then
+               return mac:upper()
+       end
+
+       return "?"
 end