extract-files.sh

#!/bin/bash
#
# Copyright (C) 2013, 2014 The CyanogenMod Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Extract DEX file from inside Android Runtime OAT file using radare2
# Copyright (C) 2013 Pau Oliva (@pof)
#
# https://github.com/poliva/random-scripts/blob/master/android/oat2dex.sh
#

set -e

VENDOR=lge
DEVICE=hammerhead

if [ $# -eq 0 ]; then
  SRC=adb
else
  if [ $# -eq 1 ]; then
    SRC=$1
  else
    echo "$0: bad number of arguments"
    echo ""
    echo "usage: $0 [PATH_TO_EXPANDED_ROM]"
    echo ""
    echo "If PATH_TO_EXPANDED_ROM is not specified, blobs will be extracted from"
    echo "the device using adb pull."
    exit 1
  fi
fi


oat2dex()
{
    OFILE="$1"

    OAT="`dirname $OFILE`/arm/`basename $OFILE ."${OFILE##*.}"`.odex"
    if [ ! -e $OAT ]; then
        return 0
    fi

    HIT=`r2 -q -c '/ dex\n035' "$OAT" 2>/dev/null | grep hit0_0 | awk '{print $1}'`
    if [ -z "$HIT" ]; then
        echo "ERROR: Can't find dex header of `basename $OFILE`"
        return 1
    fi

    SIZE=`r2 -e scr.color=false -q -c "px 4 @$HIT+32" $OAT 2>/dev/null | tail -n 1 | awk '{print $2 $3}' | sed -e "s/^/0x/" | rax2 -e`
    r2 -q -c "pr $SIZE @$HIT > /tmp/classes.dex" "$OAT" 2>/dev/null
    if [ $? -ne 0 ]; then
        echo "ERROR: Something went wrong in `basename $OFILE`"
    fi
}

BASE=../../../vendor/$VENDOR/$DEVICE/proprietary
rm -rf $BASE/*


for FILE in `cat proprietary-blobs.txt | grep -v ^# | grep -v ^$ | sed -e 's#^/system/##g' | sed -e "s#^-/system/##g"`; do
    DIR=`dirname $FILE`
    if [ ! -d $BASE/$DIR ]; then
        mkdir -p $BASE/$DIR
    fi

    if [ "$SRC" = "adb" ]; then
        adb pull /system/$FILE $BASE/$FILE
        if [ "${FILE##*.}" = "apk" ] || [ "${FILE##*.}" = "jar" ]; then
            oat2dex /system/$FILE
        fi
    else
        cp $SRC/system/$FILE $BASE/$FILE
        if [ "${FILE##*.}" = "apk" ] || [ "${FILE##*.}" = "jar" ]; then
            oat2dex $SRC/system/$FILE
        fi
    fi

    if [ -e /tmp/classes.dex ]; then
        zip -gjq $BASE/$FILE /tmp/classes.dex
        rm /tmp/classes.dex
    fi

done

./setup-makefiles.sh