Wifi configuration in interactive installer

src/freedombone-config

 USB_DRIVE=/dev/sdb1
 HWRNG_TYPE=
 ENABLE_SOCIAL_KEY_MANAGEMENT=
-
+ESSID='mesh'
+BATMAN_CELLID='02:BA:00:00:03:01'
+WIFI_CHANNEL=
 CONFIGURATION_FILE=
 
 function show_help {
   if [ $ENABLE_SOCIAL_KEY_MANAGEMENT ]; then
       echo "ENABLE_SOCIAL_KEY_MANAGEMENT=$ENABLE_SOCIAL_KEY_MANAGEMENT" >> $CONFIGURATION_FILE
   fi
+  if [ $ESSID ]; then
+      echo "ESSID=$ESSID" >> $CONFIGURATION_FILE
+  fi
+  if [ $BATMAN_CELLID ]; then
+      echo "BATMAN_CELLID=$BATMAN_CELLID" >> $CONFIGURATION_FILE
+  fi
+  if [ $WIFI_CHANNEL ]; then
+      echo "WIFI_CHANNEL=$WIFI_CHANNEL" >> $CONFIGURATION_FILE
+  fi
 }
 
 # test a domain name to see if it's valid
           3) ENABLE_CJDNS="yes";;
       esac
       save_configuration_file
+
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --inputbox "Wireless Mesh ESSID\n\nIf you press enter the default will be '$ESSID'" 10 40 "$(grep 'ESSID' temp.cfg | awk -F '=' '{print $2}')" 2> $data
+      sel=$?
+      case $sel in
+          0) ESSID=$(cat $data);;
+          1) exit 1;;
+          255) exit 1;;
+      esac
+  fi
+
+  if [[ $ENABLE_BATMAN == "yes" ]]; then
+      data=$(tempfile 2>/dev/null)
+      trap "rm -f $data" 0 1 2 5 15
+      dialog --backtitle "Freedombone Configuration" \
+          --inputbox "Wireless Mesh cell ID\n\nIf you press enter the default will be $BATMAN_CELLID" 10 40 "$(grep 'BATMAN_CELLID' temp.cfg | awk -F '=' '{print $2}')" 2> $data
+      sel=$?
+      case $sel in
+          0) BATMAN_CELLID=$(cat $data);;
+          1) exit 1;;
+          255) exit 1;;
+      esac
   fi
 
   data=$(tempfile 2>/dev/null)
       if grep -q "MEDIAGOBLIN_CODE" $CONFIGURATION_FILE; then
           MEDIAGOBLIN_CODE=$(grep "MEDIAGOBLIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
       fi
+      if grep -q "ESSID" $CONFIGURATION_FILE; then
+          ESSID=$(grep "ESSID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
+      if grep -q "BATMAN_CELLID" $CONFIGURATION_FILE; then
+          BATMAN_CELLID=$(grep "BATMAN_CELLID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
+      if grep -q "WIFI_CHANNEL" $CONFIGURATION_FILE; then
+          WIFI_CHANNEL=$(grep "WIFI_CHANNEL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
+      fi
   fi
 }