#!/bin/sh
#########################################
#           simthefon.sh                #
#       simulating the fonera           #
#                                       #
#            by futejia                 #
#      futejia.blog@gmail.com           #
#   http://futejia.blogspot.com/        #
#                                       #
# updated to work on dd-wrt by krikkit  #
#     http://www.krikkit.net/contact    #
#            2007/02/02                 #
#########################################
WLMAC=00:18:XX:XX:XX:XX #the WLAN mac-adress
MAC=00:18:XX:XX:XX:XX #the WAN mac-adress
FONREV=2
FIRMWARE=0.7.1
FONKEY=/tmp/simthefon/key #the path to the fon-public-key
DEVICE="fonera"
CHILLVER="1.0"
THCLVER="1.0"

echo "* start mode..."
echo "mode='start' wlmac='$WLMAC' mac='$MAC' fonrev='$FONREV' firmware='$FIRMWARE' chillver='$CHILLVER' thclver='$THCLVER' device='$DEVICE'" | dbclient -T -p 1937 -i $FONKEY openwrt@download.fon.com > startscript

while true; do
	echo "* starting cron mode..."
  echo "* making connection to fon"
  echo "mode='cron' wlmac='$WLMAC' mac='$MAC' fonrev='$FONREV' firmware='$FIRMWARE'" | dbclient -T -p 1937 -i $FONKEY  openwrt@download.fon.com > newscript
  if cat newscript | grep http > /dev/null 2>&1
  then
    echo "* downloading a new version"
    DWL_DATE=$(date +%Y%m%d-%H%M)
    FON_FILE=$DWL_DATE.fon
    wget -q -O $FON_FILE $(cat newscript | grep http | awk '{print $2}')
    rm newscript
    #begin untar package
    dd if=$FON_FILE of=VERSION_FILE bs=1 count=4 > /dev/null 2>&1
    VERSION=$(cat VERSION_FILE)
    rm VERSION_FILE
    dd if=$FON_FILE of=OFFSET_FILE bs=1 count=3 skip=4 > /dev/null 2>&1
    OFFSET=$(expr $(cat OFFSET_FILE))
    rm OFFSET_FILE
    dd if=$FON_FILE of=SIGNATURE_FILE bs=1 count=$OFFSET skip=7 > /dev/null 2>&1 
    rm SIGNATURE_FILE
    TO_SKIP=$(expr $OFFSET + 7)
    dd if=$FON_FILE of=tar_file bs=1 skip=$TO_SKIP > /dev/null 2>&1
    tar zx -f ./tar_file
    rm ./tar_file
    UPGRADE_FILE=$(cat upgrade | grep tar | awk '{print $3}')
    rm -f ./upgrade
    rm -f hotfix
    mkdir fon-firmware > /dev/null 2>&1
    tar xzf $UPGRADE_FILE -C fon-firmware/
    rm $UPGRADE_FILE
    #end untar package
    
    #begin get new versions
    FONREV=$(cat fon-firmware/etc/fon_revision)
    FIRMWARE=$(cat fon-firmware/etc/fon_version)
    echo "* Version is now $FIRMWARE, Revision is now $FONREV"
    #end get new versions
  else
    echo "* Can't find a new version";
  fi
  RANDOM_S=$((0x$(head -c2 /dev/urandom | hexdump | awk '$2 > 0 {print $2}') % 3600))
  TIMTS=$(echo "`expr 3600 + $RANDOM_S`")
  echo "* going to sleep for $TIMTS seconds"
  sleep $TIMTS
done;