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old-extract.sh
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old-extract.sh
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#!/bin/sh
#
# $Id: extract_firmware.sh 336 2012-08-04 00:12:14Z jeremy.collake@gmail.com $
#
. "./shared.inc"
### 20110225-MCT The VERSION is set in the shared.inc file from a single external source now.
VERSION="${SHARED_VERSION}"
#
# Title: extract_firmware.sh
# Author: Jeremy Collake <jeremy.collake@gmail.com>
# Site: http://code.google.com/p/firmware-mod-kit/
#
# USAGE: old-extract.sh FIRMWARE_IMAGE.BIN WORKING_DIRECTORY/
#
# This scripts extacts the firmware image to [WORKING_DIRECTORY],
# with the following subdirectories:
#
# image_parts/ <- firmware seperated
# rootfs/ <- extracted filesystem
#
# Example:
#
# ./old-extract.sh dd-wrt.v23_generic.bin std_generic
#
#
EXIT_ON_FS_PROBLEM="0"
echo
echo " Firmware Mod Kit (extract) v$VERSION, (c)2010-2012 Jeremy Collake, - Newer NG edition by Craig Heffner"
#################################################################
#
# function: ExtractLinuxRawFirmwareType ()
#
# Extracts essentially 'raw' firmware images with kernel, filesystem, and hardware id
# Example is the TrendNET TEW-632BRP router.
#
ExtractLinuxRawFirmwareType ()
{
# $1 = input firmware
PARTS_PATH=$2
echo " Extracting $1 to $2 ..."
mkdir -p "$PARTS_PATH/image_parts"
if [ $? = 0 ]; then
dd "if=$1" "of=$PARTS_PATH/image_parts/vmlinuz" bs=1K count=1024 2>/dev/null >> extract.log
dd "if=$1" "of=$PARTS_PATH/image_parts/squashfs-3-lzma.img" bs=1K skip=1024 2>/dev/null >> extract.log
SYSNAME=`uname`
if [ `expr "$SYSNAME" : "Darwin"` = 6 ]; then
filesize=$(ls -la $1 | awk '{print $5}')
else
filesize=$(du --apparent-size --block-size=1 $1 | cut -f 1)
fi
filesize=$((filesize - 24))
dd "if=$1" "of=$PARTS_PATH/image_parts/hwid.txt" bs=1 skip=$filesize 2>/dev/null >> extract.log
"./src/squashfs-3.0/unsquashfs-lzma" -dest "$PARTS_PATH/rootfs" \
"$PARTS_PATH/image_parts/squashfs-3-lzma.img" 2>/dev/null >> extract.log
if [ -e "$PARTS_PATH/rootfs/" ]; then
# write a marker to indicate the firmware image type and filesystem type
touch "$PARTS_PATH/.linux_raw_type"
touch "$PARTS_PATH/.squashfs3_lzma_fs"
fi
else
echo " ERROR: Creating output directory.."
fi
}
#################################################################
#
# Main script entry
#
#################################################################
if [ $# = 2 ]; then
PlatformIdentify
#################################################################
TestFileSystemExit $1 $2
#################################################################
TestIsRoot
#################################################################
if [ -f "$1" ]; then
if [ ! -f "./old-extract.sh" ]; then
echo " ERROR - You must run this script from the same directory as it is in!"
exit 1
fi
#################################################################
# remove deprecated stuff
if [ -f "./src/mksquashfs.c" ] || [ -f "mksquashfs.c" ]; then
DeprecateOldVersion
fi
#################################################################
# Invoke BuildTools, which tries to build everything and then
# sets up appropriate symlinks.
#
BuildTools "extract.log"
#################################################################
echo " Preparing working directory ..."
echo " Removing any previous files ..."
rm -rf "$2/rootfs" >> extract.log 2>&1
rm -rf "$2/image_parts" >> extract.log 2>&1
rm -rf "$2/installed_packages" >> extract.log 2>&1
echo " Creating directories ..."
mkdir -p "$2/image_parts" >> extract.log 2>&1
mkdir -p "$2/installed_packages" >> extract.log 2>&1
echo " Extracting firmware"
"src/untrx" "$1" "$2/image_parts" >> extract.log 2>&1
if [ $? != 0 ]; then
echo "! untrx failed, trying splitter3";
"src/splitter3" "$1" "$2/image_parts" >> extract.log 2>&1
if [ $? != 0 ]; then
echo " Not recognized by splitter3";
# exit 1
else
touch "$2/.linux_raw_type3"
touch "$2/.squashfs3_lzma_fs"
fi
fi
# if unknown version, then we'll just try to use the latest UnSquashFS we have
if [ -f "$2/image_parts/squashfs-lzma-image-x_x" ]; then
ln -s "squashfs-lzma-image-x_x" "$2/image_parts/squashfs-lzma-image-3_0"
fi
# if squashfs 3.1 or 3.2, symlink it to 3.0 image, since they are compatible
if [ -f "$2/image_parts/squashfs-lzma-image-3_1" ]; then
ln -s "squashfs-lzma-image-3_1" "$2/image_parts/squashfs-lzma-image-3_0"
fi
if [ -f "$2/image_parts/squashfs-lzma-image-3_2" ]; then
ln -s "squashfs-lzma-image-3_2" "$2/image_parts/squashfs-lzma-image-3_0"
fi
if [ -f "$2/image_parts/squashfs-lzma-image-3_x" ]; then
ln -s "squashfs-lzma-image-3_x" "$2/image_parts/squashfs-lzma-image-3_0"
fi
if [ -f "$2/image_parts/squashfs-lzma-image-2_0" ]; then
ln -s "squashfs-lzma-image-2_0" "$2/image_parts/squashfs-lzma-image-2_x"
fi
if [ -f "$2/image_parts/squashfs-lzma-image-2_1" ]; then
ln -s "squashfs-lzma-image-2_1" "$2/image_parts/squashfs-lzma-image-2_x"
fi
# now unsquashfs, if filesystem is squashfs
if [ -f "$2/image_parts/squashfs-lzma-image-3_0" ]; then
echo " Attempting squashfs 3.0 lzma ..."
"src/squashfs-3.0/unsquashfs-lzma" \
-dest "$2/rootfs" "$2/image_parts/squashfs-lzma-image-3_0" 2>/dev/null >> extract.log
if [ ! -e "$2/rootfs" ]; then
echo " Trying 'damn small' variant - used by DD-WRT v24 ..."
"src/squashfs-3.0-lzma-damn-small-variant/unsquashfs-lzma" \
-dest "$2/rootfs" "$2/image_parts/squashfs-lzma-image-3_0" 2>/dev/null >> extract.log
if [ -e "$2/rootfs" ]; then
# if it worked, then write a tag so we know which squashfs variant to build the fs with
touch "$2/image_parts/.sq_lzma_damn_small_variant_marker"
touch "$2/image_parts/.trx-sqfs"
fi
else
touch "$2/image_parts/.trx-sqfs"
fi
elif [ -f "$2/image_parts/squashfs-lzma-image-2_x" ]; then
"src/squashfs-2.1-r2/unsquashfs-lzma" \
-dest "$2/rootfs" "$2/image_parts/squashfs-lzma-image-2_x" 2>/dev/null >>extract.log
if [ -e "$2/rootfs" ]; then
touch "$2/image_parts/.trx-sqfs"
else
echo " ERROR: extracting filesystem."
fi
elif [ -f "$2/image_parts/cramfs-image-x_x" ]; then
TestIsRoot
"src/cramfs-2.x/cramfsck" \
-v -x "$2/rootfs" "$2/image_parts/cramfs-image-x_x" >> extract.log 2>&1
else
echo " Attempting raw linux style firmware package (i.e. TEW-632BRP) ..."
ExtractLinuxRawFirmwareType "$1" "$2"
fi
if [ -e "$2/rootfs" ]; then
echo " Firmware appears extracted correctly!"
echo " Now make changes and run build_firmware.sh."
else
echo " Error: filesystem not extracted properly."
echo " firmware image format not compatible?"
exit 1
fi
else
echo " $1 does not exist.. give me something to work with man!"
fi
else
echo " Incorrect usage."
echo " USAGE: $0 FIRMWARE_IMAGE.BIN WORKING_DIR"
exit 1
fi
exit 0