#!/bin/bash
# Parameter handling
mod_base="."
case $# in
1)
input_file="$1"
output_dir1="$(basename "$input_file" | sed -r 's/(.*)\.[^\.]*/\1/')"
;;
2)
mod_base="$1"
input_file="$2"
output_dir1="$(basename "$input_file" | sed -r 's/(.*)\.[^\.]*/\1/')"
;;
3)
mod_base="$1"
input_file="$2"
output_dir1="$3"
;;
*)
echo "usage: $0 [<base directory>] <input file> [<output directory>] ">&2
echo " - base directory defaults to '.'" >&2
exit 1
esac
#. split_functions
abs_split_functions="`find $mod_base -name split_functions`"
. $abs_split_functions
# Magic byte sequences prepared for 'hexgrep' usage
# dont change number of bytes counts are defind within routine
#alt KERNEL_MAGIC="81 12 ED FE .. .. .. 00 00 00 00 94 01 02 5a 07"
#neu KERNEL_MAGIC="81 12 ED FE .. .. .. .. 00 00 01 80 01 02 5a 07"
KERNEL_MAGIC="81 12 ED FE .. .. .. .. .. .. .. .. 01 02 5a 07"
KERNEL_MAGIC_2="0x8112edfe"
KERNEL_MAGIC_3="81 12 ED FE"
#	/*BIG ENDIAN MAGIC*/
SQUASHFS_MAGIC="68 73 71 73 .. .. 00 00 .. .. .. .."
BOOTLOADER_MAGIC="00 90 80 40"
BOOTLOADER_MAGIC_2="0x00908040"
#	/*LITTLE ENDIAN MAGIC*/
SQUASHFS_MAGIC_L="73 71 73 68 00 00 .. .. .. .. .. .."
BOOTLOADER_MAGIC_L="40 80 90 00"
BOOTLOADER_MAGIC_L_2="0x40809000"
FVK="0x2E30342E" #= .04.
FV="0x2E30352E" #= .05.
echo "--------------------------------------------------------------------------------"
echo "Looking for bootloader start kernel start and kernel end ..."
bootloder_start_at="$(recoversubscripts/ipsr p "$BOOTLOADER_MAGIC_2" "$input_file")" || \
bootloder_start_at=$(recoversubscripts/ipsr p "$BOOTLOADER_MAGIC_L_2" "$input_file") || ret="1"
kernel_end_at=$(recoversubscripts/ipsr p "$FVK" "$input_file") || kernel_end_at=$(recoversubscripts/ipsr p "$FV" "$input_file") || ret="2"
kernel_start_at=$(recoversubscripts/ipsr p "$KERNEL_MAGIC_2" "$input_file") || ret="3"
[ "$ret" == "1" ] && echo " Bootlader magic number not found in exe file, may be original recover is broken." && exit 1
[ "$ret" == "2" ] && echo " Kernel end (.04.) or (.05.) not found in exe file, may be original recover is broken." && exit 1
[ "$ret" == "3" ] && echo " Kernel magic number not found in exe file, may be original recover is broken." && exit 1
bootloder_start_at=$((bootloder_start_at + 1))
kernel_start_at=$((kernel_start_at + 1))
kernel_end_at=$((kernel_end_at - 1 ))
psize=$((bootloder_start_at - kernel_end_at))
#old way, look for old filenames 
basename "$input_file" | grep -q 'en-de' && psize=53 && kernel_end_at=$((bootloder_start_at - psize))
#new way, 05 versions
basename "$input_file" | grep -q 'en-de-es-it-fr.05.' && psize=61 && kernel_end_at=$((bootloder_start_at - psize))
kernel_end=$kernel_end_at
echo "bootloader start at: $bootloder_start_at"
echo "kernel start at: $kernel_start_at"
echo "kernel end at: $kernel_end"
# No exit 0 is used as incudefile