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root-avd/rootAVD.sh
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2021-01-14 00:11:48 +01:00

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#!/bin/bash
##########################################################################################
#
# Magisk Boot Image Patcher - original created by topjohnwu and modded by shakalaca's
# modded by NewBit XDA for Android Studio AVD
# Successfully tested on Android API:
# [Dec. 2019] - 29 Google Apis Play Store x86_64 Production Build
# [Jan. 2021] - 30 Google Apis Play Store x86_64 Production Build
#
##########################################################################################
# While debugging and developing you can turn this flag on
DEBUG=false
#DEBUG=true
# Shows whatever line get executed...
if ("$DEBUG"); then
set -x
fi
# Copied 1 to 1 from topjohnwu
getdir() {
case "$1" in
*/*) dir=${1%/*}; [ -z $dir ] && echo "/" || echo $dir ;;
*) echo "." ;;
esac
}
checkfile() {
if [ -r "$1" ]; then
#echo "File exists and is readable"
if [ -s "$1" ]; then
#echo "and has a size greater than zero"
if [ -w "$1" ]; then
#echo "and is writable"
if [ -f "$1" ]; then
#echo "and is a regular file."
return 1
fi
fi
fi
fi
return 0
}
# If all is done well so far, you can install some APK's to the AVD
# every APK file in the Apps DIR will be (re)installed
# Like magisk.apk etc.
installapps() {
APPS="Apps/*"
echo "[-] Install all APKs placed in the Apps folder"
FILES=$APPS
FILENAME=
for f in $FILES
do
echo "[*] Trying to install $f"
adb install -r "$f"
done
}
CopyMagiskToAVD() {
# If there is no file to work with, abort the script
if (checkfile "$1" -eq 0); then
echo "rootAVD needs a path with file to an AVD ramdisk"
echo "./rootAVD.sh ~/Android/Sdk/system-images/android-30/google_apis_playstore/x86_64/ramdisk.img"
echo "rootAVD will backup your ramdisk.img and replace it when finished"
exit 0
fi
echo "[-] Test if ADB SHELL is working"
ADBWORKS=$(adb shell 'echo true' 2>/dev/null)
if (! "$ADBWORKS"); then
echo "no ADB connectoin possible"
exit 0
fi
# Set Folders and FileNames
echo "[*] Set Directorys"
PATHWITHFILE="$1"
PATHTOFILE=${PATHWITHFILE%/*}
FILE=${PATHWITHFILE##*/}
fileIsKernel=false
fileIsRamdisk=false
BACKUPFILE=$FILE".backup"
# The Folder where the script was called from
ROOTAVD="`getdir "${BASH_SOURCE:-$0}"`"
MAGISKZIP=$ROOTAVD/Magisk.zip
# change to ROOTAVD directory
cd $ROOTAVD
# Is it a ramdisk named file?
if [ $FILE != "ramdisk.img" ]; then
echo "[!] please give a path to a ramdisk file"
exit 0
fi
# If no backup file exist, create one
if (checkfile $PATHTOFILE/$BACKUPFILE -eq 0); then
echo "[*] create Backup File"
cp $PATHWITHFILE $PATHTOFILE/$BACKUPFILE
else
echo "[-] Backup exists already"
fi
# Download the Magisk zip file -> Magisk-v21.2
MAGISKZIPDL=https://github.com/topjohnwu/Magisk/releases/download/v21.2/Magisk-v21.2.zip
# If Magisk.zip file already exist, don't download it again
if (checkfile $MAGISKZIP -eq 0); then
echo "[*] Downloading Magisk installer Zip"
wget $MAGISKZIPDL -O $MAGISKZIP > /dev/null 2>&1
else
echo "[-] Magisk installer Zip exists already"
fi
echo "[*] Just in case, cleaning up the Magisk DIR"
rm -rf $ROOTAVD/Magisk
echo "[*] unpacking Magisk installer Zip"
unzip $MAGISKZIP -d Magisk > /dev/null 2>&1
echo "[-] In any AVD via ADB, you can execute code without root in /data/data/com.android.shell "
ADBWORKDIR=/data/data/com.android.shell
echo "[*] Copy the original AVD ramdisk.img into Magisk DIR"
cp $PATHWITHFILE $ROOTAVD/Magisk
echo "[-] Copy Magisk Installer into Magisk DIR"
cp rootAVD.sh $ROOTAVD/Magisk
echo "[*] Just in case, cleaning up the ADB working space"
adb shell rm -rf $ADBWORKDIR/Magisk
echo "[-] Pushing all the stuff into the ADB working DIR"
ADBPUSHECHO=$(adb push $ROOTAVD/Magisk $ADBWORKDIR 2>/dev/null)
echo "[*] $ADBPUSHECHO"
echo "[-] run the actually Boot/Ramdisk/Kernel Image Patch Script"
echo "[*] from Magisk by topjohnwu and modded by NewBit XDA"
adb shell sh $ADBWORKDIR/Magisk/rootAVD.sh "ranchu"
# In Debug-Mode we can skip parts of the script
if (! "$DEBUG"); then
echo "[-] After the ramdisk.img file is patched and back gz'ed,"
echo "[*] pull it back in the Magisk DIR"
adb pull $ADBWORKDIR/Magisk/ramdiskpatched4AVD.img
echo "[-] Clean up the ADB working space"
adb shell rm -rf $ADBWORKDIR/Magisk
rm -rf $ROOTAVD/Magisk
echo "[*] Move and rename the patched ramdisk.img to the original AVD DIR"
mv ramdiskpatched4AVD.img $PATHWITHFILE
installapps
echo "[-] reboot the AVD and see if it worked"
echo "[-] Root and Su with Magisk for Android Studio AVDs"
echo "[-] Modded by NewBit XDA - Jan. 2021"
echo "[!] Huge Credits and big Thanks to topjohnwu and shakalaca"
fi
}
InstallMagiskToAVD() {
echo "[-] Switch to the location of the script file"
BASEDIR="`getdir "${BASH_SOURCE:-$0}"`"
TMPDIR=$BASEDIR/tmp
UB=$BASEDIR/META-INF/com/google/android/update-binary
BB=$BASEDIR/busybox
RDF=$BASEDIR/ramdisk.img
# change to base directory
cd $BASEDIR
chmod -R 755 .
# prepare busybox
echo "[*] Extracting busybox ..."
sh $UB -x > /dev/null 2>&1
# rename ramdisk.img to ramdisk.img.gz
mv $RDF $RDF".gz"
# Detect version and architecture
# To select the right files for the patching
API=$(getprop ro.build.version.sdk)
ABI=$(getprop ro.product.cpu.abi)
ABI2=$(getprop ro.product.cpu.abi2)
ABILONG=$(getprop ro.product.cpu.abi)
ARCH=arm
ARCH32=arm
IS64BIT=false
if [ "$ABI" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
if [ "$ABI2" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; ARCH32=arm; IS64BIT=true; fi;
if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; ARCH32=x86; IS64BIT=true; fi;
echo "[-] Device Platform: $ARCH"
echo "[-] Device API: $API"
echo "[-] ARCH32 $ARCH32"
# There is only a x86 or arm DIR with binaries
BINDIR=$ARCH32
echo "[*] copy all files from BINDIR to BASEDIR"
cp $BINDIR/* $BASEDIR
chmod -R 755 .
# In that DIR with all the binaries is also the x64 version of it
# Rename it if it is a 64-Bit AVD version
$IS64BIT && mv -f magiskinit64 magiskinit 2>/dev/null || rm -f magiskinit64
# On Android 7 with KEEPFORCEENCRYPT=false,
# AVD doesn't boot
KEEPFORCEENCRYPT=$(getprop ro.kernel.qemu.encrypt)
if [ ! -z $KEEPFORCEENCRYPT ]; then
KEEPFORCEENCRYPT=true
else
KEEPFORCEENCRYPT=false
fi
#KEEPFORCEENCRYPT=false
# On Android 7 with KEEPVERITY=false,
# ./magiskboot cpio ramdisk.cpio patch will cause segmentation fault
if [ "$API" -le "24" ] || [ "$API" -le "28" ] || [ "$API" -le "26" ]|| [ "$API" -le "30" ]; then KEEPVERITY=true; fi;
KEEPVERITY=false
[ -z $RECOVERYMODE ] && RECOVERYMODE=false
export KEEPVERITY
export KEEPFORCEENCRYPT
# Extract magisk if doesn't exist
[ -e magisk ] || ./magiskinit -x magisk magisk
echo "[-] taken from shakalaca's MagiskOnEmulator/process.sh"
echo "[*] executing ramdisk splitting / extraction / repacking "
# extract and check ramdisk
if [[ $API -ge 30 ]]; then
$BB gzip -fdk ${RDF}.gz
echo "[-] API level greater then 30"
echo "[*] Check if we need to repack ramdisk before patching .."
COUNT=`$BB strings -t d $RDF | $BB grep 00TRAILER\!\!\! | $BB wc -l`
if [[ $COUNT -gt 1 ]]; then
echo "[-] Multiple cpio archives detected"
REPACKRAMDISK=1
fi
fi
if [[ -n $REPACKRAMDISK ]]; then
rm ${RDF}.gz
echo "[*] Unpacking ramdisk .."
mkdir -p $TMPDIR/ramdisk
LASTINDEX=0
IBS=1
OBS=4096
RAMDISKS=`$BB strings -t d $RDF | $BB grep 00TRAILER\!\!\!`
for OFFSET in $RAMDISKS
do
# calculate offset to next archive
if [[ $OFFSET == *"TRAILER"* ]]; then
# find position of end of TRAILER!!! string in image
LEN=${#OFFSET}
START=$((LASTINDEX+LEN))
# find first occurance of string in image, that will be start of cpio archive
dd if=$RDF skip=$START count=$OBS ibs=$IBS obs=$OBS of=$TMPDIR/temp.img > /dev/null 2>&1
HEAD=(`$BB strings -t d $TMPDIR/temp.img | $BB head -1`)
# wola
LASTINDEX=$((START+HEAD[0]))
#echo "LASTINDEX="$LASTINDEX
continue
fi
# number of blocks we'll extract
BLOCKS=$(((OFFSET+128)/IBS))
# extract and dump
echo "[-] Dumping from $LASTINDEX to $BLOCKS .."
dd if=$RDF skip=$LASTINDEX count=$BLOCKS ibs=$IBS obs=$OBS of=$TMPDIR/temp.img > /dev/null 2>&1
cd $TMPDIR/ramdisk > /dev/null
cat $TMPDIR/temp.img | $BASEDIR/busybox cpio -i > /dev/null 2>&1
cd - > /dev/null
LASTINDEX=$OFFSET
done
echo "[*] Repacking ramdisk .."
cd $TMPDIR/ramdisk > /dev/null
$BB find . | $BB cpio -H newc -o > $RDF
cd - > /dev/null
rm $TMPDIR/temp.img
else
echo "[*] After decompressing ramdisk.img, magiskboot will work"
./magiskboot decompress $RDF".gz"
fi
mv $RDF "ramdisk.cpio"
echo "[-] Test patch status and do restore"
echo "[-] Checking ramdisk status"
if [ -e ramdisk.cpio ]; then
./magiskboot cpio ramdisk.cpio test 2>/dev/null
STATUS=$?
echo "[-] STATUS=$STATUS"
else
echo "[-] Stock A only system-as-root"
STATUS=0
fi
case $((STATUS & 3)) in
0 ) # Stock boot
echo "[-] Stock boot image detected"
SHA1=`./magiskboot sha1 ramdisk.cpio 2>/dev/null`
cp -af ramdisk.cpio ramdisk.cpio.orig 2>/dev/null
;;
1 ) # Magisk patched
echo "[-] Magisk patched boot image detected"
# Find SHA1 of stock boot image
[ -z $SHA1 ] && SHA1=`./magiskboot cpio ramdisk.cpio sha1 2>/dev/null`
./magiskboot cpio ramdisk.cpio restore
cp -af ramdisk.cpio ramdisk.cpio.orig
;;
2 ) # Unsupported
echo "[!] Boot image patched by unsupported programs"
echo "[!] Please restore back to stock boot image"
;;
esac
if [ $((STATUS & 8)) -ne 0 ]; then
echo "[!] TWOSTAGE INIT image detected - Possibly using 2SI, export env var"
export TWOSTAGEINIT=true
fi
##########################################################################################
# Ramdisk patches
##########################################################################################
echo "[-] Patching ramdisk"
echo "KEEPVERITY=$KEEPVERITY" > config
echo "KEEPFORCEENCRYPT=$KEEPFORCEENCRYPT" >> config
echo "RECOVERYMODE=$RECOVERYMODE" >> config
# actually here is the SHA of the bootimage generated
# we only have one file, so it could make sense
[ ! -z $SHA1 ] && echo "SHA1=$SHA1" >> config
# Here gets the ramdisk.img patched with the magisk su files and stuff
# Set PATCHFSTAB=true if you want the RAMDISK merge your modded fstab.ranchu before Magisk Mirror gets mounted
PATCHFSTAB=false
PATCHFSTAB=true
# cp the read-only fstab.ranchu from vendor partition and add usb:auto for SD devices
# kernel musst have Mass-Storage + SCSI Support enabled to create /dev/block/sd* nodes
echo "[!] PATCHFSTAB=$PATCHFSTAB"
if ("$PATCHFSTAB"); then
echo "[-] pulling fstab.ranchu from AVD"
cp /system/vendor/etc/fstab.ranchu $(pwd)
echo "[-] adding usb:auto to fstab.ranchu"
echo "/devices/*/block/sd* auto auto defaults voldmanaged=usb:auto" >> fstab.ranchu
# cat fstab.ranchu
echo "[-] adding overlay.d folder to ramdisk"
./magiskboot cpio ramdisk.cpio \
"mkdir 750 overlay.d" \
"mkdir 755 overlay.d/vendor" \
"mkdir 755 overlay.d/vendor/etc" \
"add 644 overlay.d/vendor/etc/fstab.ranchu fstab.ranchu"
echo "[-] overlay adding complete"
echo "[-] jumping back to patching ramdisk for magisk init"
else
echo "[!] Skipping fstab.ranchu patch with /dev/block/sda"
echo "[?] If you want fstab.ranchu patched, set PATCHFSTAB=true"
fi
echo "[!] patching the ramdisk with Magisk Init"
./magiskboot cpio ramdisk.cpio \
"add 750 init magiskinit" \
"patch" \
"backup ramdisk.cpio.orig" \
"mkdir 000 .backup" \
"add 000 .backup/.magisk config"
if [ $((STATUS & 4)) -ne 0 ]; then
echo "[!] Compressing ramdisk before zipping it"
./magiskboot cpio ramdisk.cpio compress
fi
# Perhaps it is not necessary to delete it
#rm -f ramdisk.cpio.orig config
echo "[*] zipping ramdisk"
# Rename and compress ramdisk.cpio back to ramdiskpatched4AVD.img
./magiskboot compress "ramdisk.cpio"
mv "ramdisk.cpio.gz" "ramdiskpatched4AVD.img"
return 0
}
# Script Entry Point
# Checking in which shell we are
SHELL=$(getprop ro.kernel.androidboot.hardware 2>/dev/null)
if [[ $SHELL == "ranchu" ]]; then
if [[ $SHELL == $1 ]]; then
echo "[!] We are in a emulator shell"
InstallMagiskToAVD
fi
else
echo "[!] We are in a bash shell"
CopyMagiskToAVD $1
fi
exit 0