Magisk/scripts/magisk_uninstaller.sh
2018-05-06 01:49:01 +08:00

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#!/system/bin/sh
##########################################################################################
#
# Magisk Uninstaller
# by topjohnwu
#
# This script can be placed in /cache/magisk_uninstaller.sh
# The Magisk main binary will pick up the script, and uninstall itself, following a reboot
# This script can also be used in flashable zip with the uninstaller_loader.sh
#
# This script will try to do restoration with the following:
# 1-1. Find and restore the original stock boot image dump (OTA proof)
# 1-2. If 1-1 fails, restore ramdisk from the internal backup
# (ramdisk fully restored, not OTA friendly)
# 1-3. If 1-2 fails, it will remove added files in ramdisk, however modified files
# are remained modified, because we have no backups. By doing so, Magisk will
# not be started at boot, but this isn't actually 100% cleaned up
# 2. Remove all Magisk related files
# (The list is LARGE, most likely due to bad decision in early versions
# the latest versions has much less bloat to cleanup)
#
##########################################################################################
[ -z $BOOTMODE ] && BOOTMODE=false
[ -d /data/adb/magisk ] && MAGISKBIN=/data/adb/magisk || MAGISKBIN=/data/magisk
CHROMEDIR=$MAGISKBIN/chromeos
if [ ! -f $MAGISKBIN/magiskboot -o ! -f $MAGISKBIN/util_functions.sh ]; then
echo "! Cannot find $MAGISKBIN"
exit 1
fi
if $BOOTMODE; then
# Load utility functions
. $MAGISKBIN/util_functions.sh
BOOTMODE=true
boot_actions
mount_partitions
fi
cd $MAGISKBIN
[ -z $BOOTIMAGE ] && abort "! Unable to detect boot image"
ui_print "- Found Boot Image: $BOOTIMAGE"
ui_print "- Unpacking boot image"
./magiskboot --unpack "$BOOTIMAGE"
CHROMEOS=false
case $? in
1 )
abort "! Unable to unpack boot image"
;;
3 )
ui_print "- ChromeOS boot image detected"
CHROMEOS=true
;;
4 )
ui_print "! Sony ELF32 format detected"
abort "! Please use BootBridge from @AdrianDC to flash Magisk"
;;
5 )
ui_print "! Sony ELF64 format detected"
abort "! Stock kernel cannot be patched, please use a custom kernel"
esac
# Detect boot image state
ui_print "- Checking ramdisk status"
./magiskboot --cpio ramdisk.cpio test
case $? in
0 ) # Stock boot
ui_print "- Stock boot image detected"
abort "! Magisk is not installed!"
;;
1|2 ) # Magisk patched
ui_print "- Magisk patched image detected"
# Find SHA1 of stock boot image
[ -z $SHA1 ] && SHA1=`./magiskboot --cpio ramdisk.cpio sha1 2>/dev/null`
OK=false
[ ! -z $SHA1 ] && restore_imgs $SHA1 && OK=true
if ! $OK; then
ui_print "! Boot image backup unavailable"
ui_print "- Restoring ramdisk with internal backup"
./magiskboot --cpio ramdisk.cpio restore
./magiskboot --repack $BOOTIMAGE
# Sign chromeos boot
$CHROMEOS && sign_chromeos
flash_boot_image new-boot.img "$BOOTIMAGE"
fi
;;
3 ) # Other patched
ui_print "! Boot image patched by other programs"
abort "! Cannot uninstall"
;;
esac
cd /
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/app/com.topjohnwu.magisk* \
/data/user*/*/magisk.db /data/user*/*/com.topjohnwu.magisk /data/user*/*/.tmp.magisk.config \
/data/adb/*magisk* 2>/dev/null
$BOOTMODE && /system/bin/reboot