Magisk/scripts/magisk_uninstaller.sh

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#!/system/bin/sh
##########################################################################################
#
# Magisk Uninstaller
# by topjohnwu
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#
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# 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
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#
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# 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
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# are remained modified, because we have no backups. By doing so, Magisk will
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# 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)
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#
##########################################################################################
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[ -z $BOOTMODE ] && BOOTMODE=false
MAGISKBIN=/data/magisk
CHROMEDIR=$MAGISKBIN/chromeos
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if [ ! -f $MAGISKBIN/magiskboot -o ! -f $MAGISKBIN/util_functions.sh ]; then
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echo "! Cannot find $MAGISKBIN"
exit 1
fi
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if $BOOTMODE; then
# Load utility functions
. $MAGISKBIN/util_functions.sh
boot_actions
mount_partitions
fi
cd $MAGISKBIN
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# Find the boot image
find_boot_image
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[ -z $BOOTIMAGE ] && abort "! Unable to detect boot image"
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ui_print "- Found Boot Image: $BOOTIMAGE"
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migrate_boot_backup
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ui_print "- Unpacking boot image"
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./magiskboot --unpack "$BOOTIMAGE"
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CHROMEOS=false
case $? in
1 )
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abort "! Unable to unpack boot image"
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;;
2 )
CHROMEOS=true
;;
3 )
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ui_print "! Sony ELF32 format detected"
abort "! Please use BootBridge from @AdrianDC to flash Magisk"
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;;
4 )
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ui_print "! Sony ELF64 format detected"
abort "! Stock kernel cannot be patched, please use a custom kernel"
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esac
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# Detect boot image state
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ui_print "- Checking ramdisk status"
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./magiskboot --cpio-test ramdisk.cpio
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case $? in
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0 ) # Stock boot
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ui_print "- Stock boot image detected!"
abort "! Magisk is not installed!"
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;;
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1 ) # Magisk patched
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ui_print "- Magisk patched image detected!"
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# Find SHA1 of stock boot image
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[ -z $SHA1 ] && SHA1=`./magiskboot --cpio-stocksha1 ramdisk.cpio 2>/dev/null`
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OK=false
[ ! -z $SHA1 ] && restore_imgs $SHA1 && OK=true
if ! $OK; then
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ui_print "! Boot image backup unavailable"
ui_print "- Restoring ramdisk with internal backup"
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./magiskboot --cpio-restore ramdisk.cpio
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./magiskboot --repack $BOOTIMAGE
# Sign chromeos boot
$CHROMEOS && sign_chromeos
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flash_boot_image new-boot.img "$BOOTIMAGE"
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fi
;;
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2 ) # Other patched
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ui_print "! Boot image patched by other programs!"
abort "! Cannot uninstall"
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;;
esac
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cd /
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ui_print "- Removing Magisk files"
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rm -rf /cache/*magisk* /cache/unblock /data/*magisk* /data/cache/*magisk* /data/property/*magisk* \
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/data/Magisk.apk /data/busybox /data/custom_ramdisk_patch.sh /data/app/com.topjohnwu.magisk* \
/data/user*/*/magisk.db /data/user*/*/com.topjohnwu.magisk 2>/dev/null
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$BOOTMODE && reboot