nintendozone.sh

#!/bin/bash

# Clean up, for good measure.
service hostapd stop
killall hostapd

#  Make sure that ctrl+c exits our script properly
trap exit SIGINT SIGTERM

#  Configs
MAC_FILE=/etc/hostapd/mac_nintendozone  # dataset
STREETPASS_REFRESH=28800                # 8 hours
CONFIG_FILE=/dev/shm/nintendozone.conf  # temporary AP config in RAM

# Keep repeating the list of MACs forever
while true ; do
   # The dataset might change so let's calculate within the loop.
   LINE_COUNT=$(wc -l < $MAC_FILE)
   SLEEP_TIME=$(($STREETPASS_REFRESH/$LINE_COUNT))

   #  Loop through each line in random order
   sort -R $MAC_FILE | while read MAC SSID; do

      #  Run hostapd with a conf file that we generate on the fly
      #  Do not tab this next section in, or you will have a broken config file
cat > $CONFIG_FILE <<_EOF_
interface=wlan0
ssid=$SSID
bssid=$MAC
channel=1
#bridge=br0
macaddr_acl=0
#auth_algs=1
ignore_broadcast_ssid=0
wpa=0
driver=rtl871xdrv
ieee80211n=0
wmm_enabled=0
hw_mode=g
device_name=RTL8192CU
manufacturer=Realtek
_EOF_

      echo "==========================================="
      echo "SSID:" $SSID " - BSSID:" $MAC
      echo "Time before next change:" $SLEEP_TIME "seconds"
      echo "Current time:" $(date)
      echo "==========================================="

      #  Launch the AP with the new settings
      timeout $SLEEP_TIME hostapd $CONFIG_FILE

      echo ""
      echo ""
      done
   #  We have looped through the entire dataset. Let's do it again.
   echo "~~~~Looping Back to Beginning~~~~"
done