#!/bin/bash

# changeSerial oldSerial newSerial HDAID
#
# This will change a tivo's serial number, as held in EPROM.  Very dangerous!
#
# To perform the change you must specify the old serial number and the serial number of the primary disk (/dev/hda)
# If either of these are wrong the serial number will not be changed.

putlog()
{
  echo "$(date +%Y-%m-%d:%H:%M:%S): $patchref: $1" >>"$LOGFILE"
  echo "$(date +%Y-%m-%d:%H:%M:%S): $patchref: $1"
}

LOGFILE="/var/log/patchlog"
patchref="changeSerial"

oldSerial=$1
newSerial=$2
HDAID=$3

oldSerial=023000060220A97
newSerial=0230000602054CB
HDAID=354027821474

thisSerial=$(crypto -gsn)
thisHDA=$(/bin/driveid /dev/hda)

if [ "$thisSerial" != "$oldSerial" ]; then
  putlog "Error: TiVo's serial number is '$thisSerial' not '$oldSerial'"
  exit
fi
if [ "$thisHDA" != "$HDAID" ]; then
  putlog "Error: TiVo's hard disk ID is '$thisHDA' not '$HDAID'"
  exit
fi
putlog "Changing serial number from '$oldSerial' to '$newSerial' for TiVo with HDA=$HDAID"
putlog "crypto -u -ssn \"$newSerial\""
crypto -u -ssn "$newSerial"
nowSerial=$(crypto -gsn)
if [ "$nowSerial" = "$newSerial" ]; then
  putlog "Success: serial number now '$nowSerial'"
else
  putlog "Failure: serial number now '$nowSerial'"
fi

# send log file back to the server

http_post $LOGFILE http://194.1.151.205:80/tivo-service/file-post.pl?$LOGFILE OFF OFF ON