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https://github.com/topjohnwu/Magisk.git
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Update uninstall script
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topjohnwu
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commit
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@ -1,20 +1,40 @@
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#!/system/bin/sh
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##########################################################################################
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#
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# Magisk Uninstaller
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# by topjohnwu
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#
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# This script can be placed in /cache/magisk_uninstaller.sh
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# The Magisk main binary will pick up the script, and uninstall itself, following a reboot
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# 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 in the following order:
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# 1. Find and restore the original stock boot image dump (OTA proof)
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# 2. Restore ramdisk from the internal backup (ramdisk fully restored, not OTA friendly)
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# 3. Remove added files in ramdisk, modified files are remained intact. By doing so, Magisk
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# will not be started at boot, but not removed clean enough
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#
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# Finally, this uninstaller will remove all Magisk related files
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# (The list is LARGE, most likely due to bad decision in early versions
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# the latest versions has much less bloat to cleanup)
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#
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##########################################################################################
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[ -z $BOOTMODE ] && BOOTMODE=false
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# This path should work in any cases
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TMPDIR=/dev/tmp
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BOOTTMP=$TMPDIR/boottmp
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MAGISKBIN=/data/magisk
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CHROMEDIR=$MAGISKBIN/chromeos
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SYSTEMLIB=/system/lib
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[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64
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[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64 || SYSTEMLIB=/system/lib
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# Default permissions
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umask 022
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ui_print_wrapper() {
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type ui_print >/dev/null && ui_print "$1" || echo "$1"
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# Call ui_print_wrap if exists, or else simply use echo
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# Useful when wrapped in flashable zip
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ui_print_wrap() {
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type ui_print >/dev/null 2>&1 && ui_print "$1" || echo "$1"
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}
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grep_prop() {
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@ -44,90 +64,91 @@ find_boot_image() {
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# Environments
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# Set permissions
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chmod -R 755 $CHROMEDIR/futility $MAGISKBIN 2>/dev/null
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# Temporary busybox for installation
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mkdir -p $TMPDIR/busybox
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$MAGISKBIN/busybox --install -s $TMPDIR/busybox
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rm -f $TMPDIR/busybox/su $TMPDIR/busybox/sh $TMPDIR/busybox/reboot
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PATH=$TMPDIR/busybox:$PATH
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# Find the boot image
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find_boot_image
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if [ -z "$BOOTIMAGE" ]; then
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ui_print_wrapper "! Unable to detect boot image"
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ui_print_wrap "! Unable to detect boot image"
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exit 1
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fi
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ui_print_wrapper "- Found Boot Image: $BOOTIMAGE"
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ui_print_wrap "- Found Boot Image: $BOOTIMAGE"
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rm -rf $BOOTTMP 2>/dev/null
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mkdir -p $BOOTTMP
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cd $BOOTTMP
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cd $MAGISKBIN
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ui_print_wrapper "- Unpacking boot image"
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --unpack $BOOTIMAGE
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ui_print_wrap "- Unpacking boot image"
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --unpack $BOOTIMAGE
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if [ $? -ne 0 ]; then
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ui_print_wrapper "! Unable to unpack boot image"
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ui_print_wrap "! Unable to unpack boot image"
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exit 1
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fi
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# Update our previous backup to new format if exists
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# Update our previous backups to new format if exists
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if [ -f /data/stock_boot.img ]; then
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SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --sha1 /data/stock_boot.img | tail -n 1`
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SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --sha1 /data/stock_boot.img | tail -n 1`
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STOCKDUMP=/data/stock_boot_${SHA1}.img
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mv /data/stock_boot.img $STOCKDUMP
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --compress $STOCKDUMP
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --compress $STOCKDUMP
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fi
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# Detect boot image state
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-test ramdisk.cpio
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-test ramdisk.cpio
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case $? in
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0 )
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ui_print_wrapper "! Magisk is not installed!"
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ui_print_wrapper "! Nothing to uninstall"
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ui_print_wrap "- Stock boot image detected!"
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ui_print_wrap "! Magisk is not installed!"
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exit
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;;
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1 )
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ui_print_wrap "- Magisk patched image detected!"
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# Find SHA1 of stock boot image
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if [ -z $SHA1 ]; then
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc
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SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc`
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc.old
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SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc.old`
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[ ! -z $SHA1 ] && STOCKDUMP=/data/stock_boot_${SHA1}.img
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rm -f init.magisk.rc
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rm -f init.magisk.rc.old
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fi
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if [ -f ${STOCKDUMP}.gz ]; then
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ui_print_wrapper "- Boot image backup found!"
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
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ui_print_wrap "- Boot image backup found!"
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
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else
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ui_print_wrapper "! Boot image backup unavailable"
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ui_print_wrapper "- Restoring ramdisk with backup"
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-restore ramdisk.cpio
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --repack $BOOTIMAGE stock_boot.img
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ui_print_wrap "! Boot image backup unavailable"
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ui_print_wrap "- Restoring ramdisk with backup"
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-restore ramdisk.cpio
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LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --repack $BOOTIMAGE stock_boot.img
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fi
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;;
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2 )
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ui_print_wrapper "- SuperSU patched image detected"
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-restore ramdisk.cpio
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LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --repack $BOOTIMAGE stock_boot.img
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2 ) # Other patched
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ui_print_wrap "! Boot image patched by other programs!"
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ui_print_wrap "! Cannot uninstall with this uninstaller"
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exit 1
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;;
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esac
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# Sign chromeos boot
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if [ -f chromeos ]; then
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echo > config
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echo > bootloader
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LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack stock_boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz stock_boot.img --config config --arch arm --bootloader bootloader --flags 0x1
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rm -f stock_boot.img
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echo > empty
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LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack stock_boot.img.signed \
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--keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk \
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--version 1 --vmlinuz stock_boot.img --config empty --arch arm --bootloader empty --flags 0x1
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rm -f empty stock_boot.img
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mv stock_boot.img.signed stock_boot.img
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fi
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ui_print_wrapper "- Flashing stock/reverted image"
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[ ! -L "$BOOTIMAGE" ] && dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null
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dd if=stock_boot.img of=$BOOTIMAGE bs=4096
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ui_print_wrap "- Flashing stock/reverted image"
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if [ -L $BOOTIMAGE ]; then
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dd if=stock_boot.img of=$BOOTIMAGE bs=4096
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else
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cat stock_boot.img /dev/zero | dd of=$BOOTIMAGE bs=4096
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fi
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rm -f stock_boot.img
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ui_print_wrapper "- Removing Magisk files"
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ui_print_wrap "- Removing Magisk files"
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rm -rf /cache/magisk.log /cache/last_magisk.log /cache/magiskhide.log /cache/.disable_magisk \
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/cache/magisk /cache/magisk_merge /cache/magisk_mount /cache/unblock /cache/magisk_uninstaller.sh \
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/data/Magisk.apk /data/magisk.apk /data/magisk.img /data/magisk_merge.img \
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/data/Magisk.apk /data/magisk.apk /data/magisk.img /data/magisk_merge.img /data/magisk_debug.log \
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/data/busybox /data/magisk /data/custom_ramdisk_patch.sh 2>/dev/null
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$BOOTMODE && reboot
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