Magisk/scripts/uninstaller.sh
2021-01-24 07:18:14 -08:00

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#MAGISK
############################################
# Magisk Uninstaller (updater-script)
############################################
##############
# Preparation
##############
# Default permissions
umask 022
OUTFD=$2
APK="$3"
COMMONDIR=$INSTALLER/assets
CHROMEDIR=$INSTALLER/assets/chromeos
if [ ! -f $COMMONDIR/util_functions.sh ]; then
echo "! Unable to extract zip file!"
exit 1
fi
# Load utility functions
. $COMMONDIR/util_functions.sh
setup_flashable
############
# Detection
############
if echo $MAGISK_VER | grep -q '\.'; then
PRETTY_VER=$MAGISK_VER
else
PRETTY_VER="$MAGISK_VER($MAGISK_VER_CODE)"
fi
print_title "Magisk $PRETTY_VER Uninstaller"
is_mounted /data || mount /data || abort "! Unable to mount /data, please uninstall with Magisk Manager"
mount_partitions
check_data
$DATA_DE || abort "! Cannot access /data, please uninstall with Magisk Manager"
if ! $BOOTMODE; then
# Mounting stuffs in recovery (best effort)
mount_name metadata /metadata
mount_name "cache cac" /cache
mount_name persist /persist
fi
get_flags
find_boot_image
[ -z $BOOTIMAGE ] && abort "! Unable to detect target image"
ui_print "- Target image: $BOOTIMAGE"
# Detect version and architecture
api_level_arch_detect
ui_print "- Device platform: $ARCH"
BINDIR=$INSTALLER/lib/$ARCH32
[ ! -d "$BINDIR" ] && BINDIR=$INSTALLER/lib/armeabi-v7a
cd $BINDIR
for file in lib*.so; do mv "$file" "${file:3:${#file}-6}"; done
cd /
chmod -R 755 $CHROMEDIR $BINDIR
cp -af $CHROMEDIR/. $BINDIR/chromeos
############
# Uninstall
############
cd $BINDIR
CHROMEOS=false
ui_print "- Unpacking boot image"
# Dump image for MTD/NAND character device boot partitions
if [ -c $BOOTIMAGE ]; then
nanddump -f boot.img $BOOTIMAGE
BOOTNAND=$BOOTIMAGE
BOOTIMAGE=boot.img
fi
./magiskboot unpack "$BOOTIMAGE"
case $? in
1 )
abort "! Unsupported/Unknown image format"
;;
2 )
ui_print "- ChromeOS boot image detected"
CHROMEOS=true
;;
esac
# Restore the original boot partition path
[ "$BOOTNAND" ] && BOOTIMAGE=$BOOTNAND
# Detect boot image state
ui_print "- Checking ramdisk status"
if [ -e ramdisk.cpio ]; then
./magiskboot cpio ramdisk.cpio test
STATUS=$?
else
# Stock A only system-as-root
STATUS=0
fi
case $((STATUS & 3)) in
0 ) # Stock boot
ui_print "- Stock boot image detected"
;;
1 ) # Magisk patched
ui_print "- Magisk patched image detected"
# Find SHA1 of stock boot image
SHA1=$(./magiskboot cpio ramdisk.cpio sha1 2>/dev/null)
BACKUPDIR=/data/magisk_backup_$SHA1
if [ -d $BACKUPDIR ]; then
ui_print "- Restoring stock boot image"
flash_image $BACKUPDIR/boot.img.gz $BOOTIMAGE
for name in dtb dtbo dtbs; do
[ -f $BACKUPDIR/${name}.img.gz ] || continue
IMAGE=$(find_block $name$SLOT)
[ -z $IMAGE ] && continue
ui_print "- Restoring stock $name image"
flash_image $BACKUPDIR/${name}.img.gz $IMAGE
done
else
ui_print "! Boot image backup unavailable"
ui_print "- Restoring ramdisk with internal backup"
./magiskboot cpio ramdisk.cpio restore
if ! ./magiskboot cpio ramdisk.cpio "exists init"; then
# A only system-as-root
rm -f ramdisk.cpio
fi
./magiskboot repack $BOOTIMAGE
# Sign chromeos boot
$CHROMEOS && sign_chromeos
ui_print "- Flashing restored boot image"
flash_image new-boot.img $BOOTIMAGE || abort "! Insufficient partition size"
fi
;;
2 ) # Unsupported
ui_print "! Boot image patched by unsupported programs"
abort "! Cannot uninstall"
;;
esac
ui_print "- Removing Magisk files"
rm -rf \
/cache/*magisk* /cache/unblock /data/*magisk* /data/cache/*magisk* /data/property/*magisk* \
/data/Magisk.apk /data/busybox /data/custom_ramdisk_patch.sh /data/adb/*magisk* \
/data/adb/post-fs-data.d /data/adb/service.d /data/adb/modules* \
/data/unencrypted/magisk /metadata/magisk /persist/magisk /mnt/vendor/persist/magisk
ADDOND=/system/addon.d/99-magisk.sh
if [ -f $ADDOND ]; then
blockdev --setrw /dev/block/mapper/system$SLOT 2>/dev/null
mount -o rw,remount /system || mount -o rw,remount /
rm -f $ADDOND
fi
cd /
if $BOOTMODE; then
ui_print "********************************************"
ui_print " Magisk Manager will uninstall itself, and"
ui_print " the device will reboot after a few seconds"
ui_print "********************************************"
(sleep 8; /system/bin/reboot)&
else
ui_print "********************************************"
ui_print " Magisk Manager will not be uninstalled"
ui_print " Please uninstall it manually after reboot"
ui_print "********************************************"
recovery_cleanup
ui_print "- Done"
fi
rm -rf $TMPDIR
exit 0