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cros_nb_extract.sh
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cros_nb_extract.sh
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#!/bin/bash -e
green='\033[0;32m'
red='\033[0;31m'
nocolor='\033[0m'
work_dir="$(pwd)/cros_workdir"
magisk_dir="$work_dir/cros_nb"
cros_recovery="$1"
cros_recovery_bin=$(echo "$1" | awk '{print substr($0, 1, length-4)}')
clear
run_all(){
request_root_password
prepare_workdir
build_magisk_module
}
request_root_password(){
echo -e "\n\t Root password (Needed for setting up loop device):"
read -r -s password
echo -e "\n\t Script will fail in case given password is wrong, or p7zip is not installed.\n"
sleep 2
}
prepare_workdir(){
echo -e "-Extracting android container ..."
mkdir -p "$work_dir" && cd "$_"
7z x ../"$cros_recovery" -y -oimages &> /dev/null
7z e images/"$cros_recovery_bin" -y -oimages *ROOT-A.img &> /dev/null
rm images/"$cros_recovery_bin"
echo -e "-Mounting android system/vendor (Root) ..."
echo "$password" | sudo -S sh -c ' \
mkdir -p /mnt/cros_A /mnt/cros_system /mnt/cros_vendor && \
mount -o loop,ro images/*ROOT-A.img /mnt/cros_A && \
mount -o loop,ro /mnt/cros_A/opt/google/vms/android/system.raw.img /mnt/cros_system && \
mount -o loop,ro /mnt/cros_A/opt/google/vms/android/vendor.raw.img /mnt/cros_vendor '
}
build_magisk_module(){
echo -e "-Prepare magisk module structure ..."
mkdir -p "$magisk_dir" && cd "$_"
p1="system/"
p2="system/vendor"
vdirs=" $p1/bin/arm $p1/bin/arm64 $p2/bin/arm $p2/bin/arm64
$p1/lib/arm $p1/lib64/arm64 $p2/lib/arm $p2/lib64/arm64
$p1/etc/init $p1/etc/binfmt_misc $p2/etc/init $p2/etc/binfmt_misc"
for dirs in $vdirs
do mkdir -p "$dirs"
done
meta="META-INF/com/google/android"
mkdir -p $meta
cat <<EOF >"$meta/update-binary"
#################
# Initialization
#################
umask 022
ui_print() { echo "\$1"; }
OUTFD=\$2
ZIPFILE=\$3
. /data/adb/magisk/util_functions.sh
install_module
exit 0
EOF
cat <<EOF >"$meta/updater-script"
#MAGISK
EOF
cat <<EOF >"module.prop"
id=cros_nb
name=cros_nb
version=v1.0
versionCode=1
author=MrMiy4mo
description=Android native bridge implementation pulled from Chromebook Software.
EOF
cat <<EOF >"system.prop"
ro.dalvik.vm.isa.arm=x86
ro.enable.native.bridge.exec=1
ro.dalvik.vm.isa.arm64=x86_64
ro.enable.native.bridge.exec64=1
ro.product.cpu.abilist=x86_64,x86,arm64-v8a,armeabi-v7a,armeabi
ro.product.cpu.abilist32=x86,armeabi-v7a,armeabi
ro.product.cpu.abilist64=x86_64,arm64-v8a
EOF
cat <<EOF >"service.sh"
until [[ "\$(getprop sys.boot_completed)" == "1" ]]; do sleep 1; done
if [ -a "\$MODPATH"/system/lib64/libhoudini.so ] || [ -a "\$MODPATH"/system/vendor/lib64/libhoudini.so ] || [ -a "\$MODPATH"/vendor/lib64/libhoudini.so ];
then
resetprop ro.dalvik.vm.native.bridge libhoudini.so
else
resetprop ro.dalvik.vm.native.bridge libndk_translation.so
fi
EOF
cat <<EOF >"customize.sh"
set_perm_recursive \$MODPATH 0 0 0755 0644
set_perm_recursive \$MODPATH/system/bin/* 0 2000 0755
set_perm_recursive \$MODPATH/system/etc/binfmt_misc 0 0 0755 0755
set_perm_recursive \$MODPATH/system/lib* 0 0 0755 0644
set_perm_recursive \$MODPATH/system/etc 0 0 0755 0644
set_perm_recursive \$MODPATH 0 0 0755 0644
set_perm_recursive \$MODPATH/vendor/bin/* 0 2000 0755
set_perm_recursive \$MODPATH/vendor/etc/binfmt_misc 0 0 0755 0755
set_perm_recursive \$MODPATH/vendor/lib* 0 0 0755 0644
set_perm_recursive \$MODPATH/vendor/etc 0 0 0755 0644
EOF
cat <<EOF >system/etc/init/nb.rc
# Enable native bridge for target executables
on early-init && property:ro.enable.native.bridge.exec=1
exec u:r:su:s0 -- /system/bin/logwrapper /system/bin/sh /system/bin/modprobe binfmt_misc
mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc
on property:ro.enable.native.bridge.exec=1 && property:ro.dalvik.vm.isa.arm=x86
copy /system/etc/binfmt_misc/arm_exe /proc/sys/fs/binfmt_misc/register
copy /system/etc/binfmt_misc/arm_dyn /proc/sys/fs/binfmt_misc/register
on property:ro.enable.native.bridge.exec=1 && property:ro.dalvik.vm.isa.arm64=x86_64
copy /system/etc/binfmt_misc/arm64_exe /proc/sys/fs/binfmt_misc/register
copy /system/etc/binfmt_misc/arm64_dyn /proc/sys/fs/binfmt_misc/register
EOF
cat <<EOF >system/vendor/etc/init/nb.rc
# Enable native bridge for target executables
on early-init && property:ro.enable.native.bridge.exec=1
exec u:r:su:s0 -- /system/bin/logwrapper /system/bin/sh /system/bin/modprobe binmft_misc
mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc
on property:ro.enable.native.bridge.exec=1 && property:ro.dalvik.vm.isa.arm=x86
copy /vendor/etc/binfmt_misc/arm_exe /proc/sys/fs/binfmt_misc/register
copy /vendor/etc/binfmt_misc/arm_dyn /proc/sys/fs/binfmt_misc/register
on property:ro.enable.native.bridge.exec=1 && property:ro.dalvik.vm.isa.arm64=x86_64
copy /vendor/etc/binfmt_misc/arm64_exe /proc/sys/fs/binfmt_misc/register
copy /vendor/etc/binfmt_misc/arm64_dyn /proc/sys/fs/binfmt_misc/register
EOF
cp /mnt/cros_A/opt/google/vms/android/ARM_TO_AMD_DBT_LICENSE.txt ./
echo -e "-Pull blobs from chromeos recovery ..."
echo "$password" | sudo -S sh -c "$(cat << 'EOF'
p1="system/vendor"
p2="system/"
cp -r --preserve=all /mnt/cros_system/system/bin/houdini* $p2/bin/
cp -r --preserve=all /mnt/cros_system/system/bin/ndk_translation_program_runner_binfmt_misc* $p2/bin/
cp -r --preserve=all /mnt/cros_system/system/bin/arm/* $p2/bin/arm/
cp -r --preserve=all /mnt/cros_system/system/bin/arm64/* $p2/bin/arm64/
cp -r --preserve=all /mnt/cros_system/system/lib/libhoudini.so $p2/lib/
cp -r --preserve=all /mnt/cros_system/system/lib/libndk_translation* $p2/lib/
cp -r --preserve=all /mnt/cros_system/system/lib/arm/* $p2/lib/arm/
cp -r --preserve=all /mnt/cros_system/system/lib64/libhoudini.so $p2/lib64/
cp -r --preserve=all /mnt/cros_system/system/lib64/libndk_translation* $p2/lib64/
cp -r --preserve=all /mnt/cros_system/system/lib64/arm64/* $p2/lib64/arm64/
cp -r --preserve=all /mnt/cros_system/system/etc/binfmt_misc/* $p2/etc/binfmt_misc/
cp -r --preserve=all /mnt/cros_system/system/etc/cpuinfo* $p2/etc/
cp -r --preserve=all /mnt/cros_system/system/etc/ld.config* $p2/etc/
cp -r --preserve=all /mnt/cros_vendor/bin/houdini* $p1/bin/
cp -r --preserve=all /mnt/cros_vendor/bin/ndk_translation_program_runner_binfmt_misc* $p1/bin/
cp -r --preserve=all /mnt/cros_vendor/bin/arm/* $p1/bin/arm/
cp -r --preserve=all /mnt/cros_vendor/bin/arm64/* $p1/bin/arm64/
cp -r --preserve=all /mnt/cros_vendor/lib/libhoudini.so $p1/lib/
cp -r --preserve=all /mnt/cros_vendor/lib/libndk_translation* $p1/lib/
cp -r --preserve=all /mnt/cros_vendor/lib/arm/* $p1/lib/arm/
cp -r --preserve=all /mnt/cros_vendor/lib64/libhoudini.so $p1/lib64/
cp -r --preserve=all /mnt/cros_vendor/lib64/libndk_translation* $p1/lib64/
cp -r --preserve=all /mnt/cros_vendor/lib64/arm64/* $p1/lib64/arm64/
cp -r --preserve=all /mnt/cros_vendor/etc/binfmt_misc/* $p1/etc/binfmt_misc/
cp -r --preserve=all /mnt/cros_vendor/etc/cpuinfo* $p1/etc/
cp -r --preserve=all /mnt/cros_vendor/etc/ld.config* $p1/etc/
EOF
)" 2>/dev/null
echo -e "-Packing files in to magisk module ..."
7z -tzip a ../../cros_nb.zip ./* &>/dev/null
if ! [ -a ../../cros_nb.zip ];
then echo -e "$red-Packing failed!$nocolor" && exit 1
else echo -e "$green-All done, your module is saved as cros_nb.zip$nocolor"
fi
echo -e "-Cleaning up ..."
cd ../..
echo "$work_dir" >placeholder
echo "$password" | sudo -S sh -c ' \
umount /mnt/cros_vendor && \
umount /mnt/cros_system && \
umount /mnt/cros_A && \
rmdir /mnt/cros_vendor && \
rmdir /mnt/cros_system && \
rmdir /mnt/cros_A && \
rm -r $(cat placeholder) && \
rm placeholder '
}
run_all