configurehood: Improve conditions for configap setup

This addresses a bunch of issues:
- Previously, only the presence of w2configap was checked. With
  only 5 GHz, this would have caused a recreation every 5 min.
  (Note that this is only valid for a 5 GHz only device, as we
  always create all interfaces for disabled radios)
- The two outer if-statements are merged
- We now check for presence of wXmesh to enable wXconfigap. Although
  this is no necessity (as the hood file contains the whole config)
  this assumes that a disabled wXmesh means no intent of the owner
  to connect to other devices on this radio.
- With the dependency of wXconfigap from wXmesh, this patch now
  enables the deactivation of hood file transmitting by disabling
  meshing in the hood file

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Christian Dresel <fff@chrisi01.de>
Reviewed-by: Tim Niemeyer <tim@tn-x.org>

src/packages/fff/fff-hoods/files/usr/sbin/configurehood

@@ -38,27 +38,30 @@ hasInternet() {
 
 # Hidden AP check
 
-if [ -s "$hoodfilecopy" ] && ! uci -q get wireless.w2configap > /dev/null ; then
-	if isGatewayAvailable ; then
-
-		for radio in $(uci show wireless | sed -n 's,.*\.\([a-z0-9]*\)=wifi-device,\1,p'); do
-			channel=$(uci get "wireless.${radio}.channel")
-			iface="configap2"
-			if [ "$channel" -gt "14" ]; then
-				iface="configap5"
-			fi
-			uci set network.${iface}=interface
-			uci set network.${iface}.proto='static'
-			uci set network.${iface}.ip6addr='fe80::1/64'
-			if ! wifiAddAP "$radio" "config.franken.freifunk.net" "$iface" "configap" "1"; then
-				echo "Can't add Config interface on $radio."
-				exit 1
-			fi
-		done
+if [ -s "$hoodfilecopy" ] && isGatewayAvailable ; then
+	for radio in $(uci show wireless | sed -n 's,.*\.\([a-z0-9]*\)=wifi-device,\1,p'); do
+		freq="2"
+		if [ "$(uci get "wireless.${radio}.channel")" -gt "14" ]; then
+			freq="5"
+		fi
+		# Break: wXconfig is up
+		uci -q get "wireless.w${freq}configap" > /dev/null && continue
+		# Break: No mesh interface
+		(uci -q get "wireless.w${freq}mesh" > /dev/null || uci -q get "wireless.w${freq}ibss" > /dev/null) || continue
+		
+		# Create configap
+		iface="configap$freq"
+		uci set network.${iface}=interface
+		uci set network.${iface}.proto='static'
+		uci set network.${iface}.ip6addr='fe80::1/64'
 		uci commit network
+		if ! wifiAddAP "$radio" "config.franken.freifunk.net" "$iface" "configap" "1"; then
+			echo "Can't add Config interface on $radio."
+			exit 1
+		fi
+	done
 
-		wifi
-	fi
+	wifi
 fi
 
 lat=$(uci -q get fff.system.latitude)