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Update uninstall script

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This commit is contained in:
topjohnwu 2017-06-08 04:28:55 +08:00
parent 19e407fcc4
commit bc576a9659
1 changed files with 70 additions and 49 deletions
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119
app/src/main/assets/magisk_uninstaller.sh
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@ -1,20 +1,40 @@
#!/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 in the following order:
# 1. Find and restore the original stock boot image dump (OTA proof)
# 2. Restore ramdisk from the internal backup (ramdisk fully restored, not OTA friendly)
# 3. Remove added files in ramdisk, modified files are remained intact. By doing so, Magisk
# will not be started at boot, but not removed clean enough
#
# Finally, this uninstaller will 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 [ -z $BOOTMODE ] && BOOTMODE=false
# This path should work in any cases
TMPDIR=/dev/tmp
BOOTTMP=$TMPDIR/boottmp
MAGISKBIN=/data/magisk MAGISKBIN=/data/magisk
CHROMEDIR=$MAGISKBIN/chromeos CHROMEDIR=$MAGISKBIN/chromeos
SYSTEMLIB=/system/lib [ -d /system/lib64 ] && SYSTEMLIB=/system/lib64 || SYSTEMLIB=/system/lib
[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64
# Default permissions # Default permissions
umask 022 umask 022
ui_print_wrapper() { # Call ui_print_wrap if exists, or else simply use echo
type ui_print >/dev/null && ui_print "$1" || echo "$1" # Useful when wrapped in flashable zip
ui_print_wrap() {
type ui_print >/dev/null 2>&1 && ui_print "$1" || echo "$1"
} }
grep_prop() { grep_prop() {
@ -44,90 +64,91 @@ find_boot_image() {
# Environments # Environments
# Set permissions # Set permissions
chmod -R 755 $CHROMEDIR/futility $MAGISKBIN 2>/dev/null chmod -R 755 $CHROMEDIR/futility $MAGISKBIN 2>/dev/null
# Temporary busybox for installation
mkdir -p $TMPDIR/busybox
$MAGISKBIN/busybox --install -s $TMPDIR/busybox
rm -f $TMPDIR/busybox/su $TMPDIR/busybox/sh $TMPDIR/busybox/reboot
PATH=$TMPDIR/busybox:$PATH
# Find the boot image # Find the boot image
find_boot_image find_boot_image
if [ -z "$BOOTIMAGE" ]; then if [ -z "$BOOTIMAGE" ]; then
ui_print_wrapper "! Unable to detect boot image" ui_print_wrap "! Unable to detect boot image"
exit 1 exit 1
fi fi
ui_print_wrapper "- Found Boot Image: $BOOTIMAGE" ui_print_wrap "- Found Boot Image: $BOOTIMAGE"
rm -rf $BOOTTMP 2>/dev/null cd $MAGISKBIN
mkdir -p $BOOTTMP
cd $BOOTTMP
ui_print_wrapper "- Unpacking boot image" ui_print_wrap "- Unpacking boot image"
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --unpack $BOOTIMAGE LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --unpack $BOOTIMAGE
if [ $? -ne 0 ]; then if [ $? -ne 0 ]; then
ui_print_wrapper "! Unable to unpack boot image" ui_print_wrap "! Unable to unpack boot image"
exit 1 exit 1
fi fi
# Update our previous backup to new format if exists # Update our previous backups to new format if exists
if [ -f /data/stock_boot.img ]; then if [ -f /data/stock_boot.img ]; then
SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --sha1 /data/stock_boot.img | tail -n 1` SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --sha1 /data/stock_boot.img | tail -n 1`
STOCKDUMP=/data/stock_boot_${SHA1}.img STOCKDUMP=/data/stock_boot_${SHA1}.img
mv /data/stock_boot.img $STOCKDUMP mv /data/stock_boot.img $STOCKDUMP
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --compress $STOCKDUMP LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --compress $STOCKDUMP
fi fi
# Detect boot image state # Detect boot image state
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-test ramdisk.cpio LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-test ramdisk.cpio
case $? in case $? in
0 ) 0 )
ui_print_wrapper "! Magisk is not installed!" ui_print_wrap "- Stock boot image detected!"
ui_print_wrapper "! Nothing to uninstall" ui_print_wrap "! Magisk is not installed!"
exit exit
;; ;;
1 ) 1 )
ui_print_wrap "- Magisk patched image detected!"
# Find SHA1 of stock boot image # Find SHA1 of stock boot image
if [ -z $SHA1 ]; then if [ -z $SHA1 ]; then
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc.old
SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc` SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc.old`
[ ! -z $SHA1 ] && STOCKDUMP=/data/stock_boot_${SHA1}.img [ ! -z $SHA1 ] && STOCKDUMP=/data/stock_boot_${SHA1}.img
rm -f init.magisk.rc rm -f init.magisk.rc.old
fi fi
if [ -f ${STOCKDUMP}.gz ]; then if [ -f ${STOCKDUMP}.gz ]; then
ui_print_wrapper "- Boot image backup found!" ui_print_wrap "- Boot image backup found!"
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
else else
ui_print_wrapper "! Boot image backup unavailable" ui_print_wrap "! Boot image backup unavailable"
ui_print_wrapper "- Restoring ramdisk with backup" ui_print_wrap "- Restoring ramdisk with backup"
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-restore ramdisk.cpio LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-restore ramdisk.cpio
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --repack $BOOTIMAGE stock_boot.img LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --repack $BOOTIMAGE stock_boot.img
fi fi
;; ;;
2 ) 2 ) # Other patched
ui_print_wrapper "- SuperSU patched image detected" ui_print_wrap "! Boot image patched by other programs!"
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --cpio-restore ramdisk.cpio ui_print_wrap "! Cannot uninstall with this uninstaller"
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskboot --repack $BOOTIMAGE stock_boot.img exit 1
;; ;;
esac esac
# Sign chromeos boot # Sign chromeos boot
if [ -f chromeos ]; then if [ -f chromeos ]; then
echo > config echo > empty
echo > bootloader
LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack stock_boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz stock_boot.img --config config --arch arm --bootloader bootloader --flags 0x1 LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack stock_boot.img.signed \
rm -f stock_boot.img --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk \
--version 1 --vmlinuz stock_boot.img --config empty --arch arm --bootloader empty --flags 0x1
rm -f empty stock_boot.img
mv stock_boot.img.signed stock_boot.img mv stock_boot.img.signed stock_boot.img
fi fi
ui_print_wrapper "- Flashing stock/reverted image" ui_print_wrap "- Flashing stock/reverted image"
[ ! -L "$BOOTIMAGE" ] && dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null if [ -L $BOOTIMAGE ]; then
dd if=stock_boot.img of=$BOOTIMAGE bs=4096 dd if=stock_boot.img of=$BOOTIMAGE bs=4096
else
cat stock_boot.img /dev/zero | dd of=$BOOTIMAGE bs=4096
fi
rm -f stock_boot.img
ui_print_wrapper "- Removing Magisk files" ui_print_wrap "- Removing Magisk files"
rm -rf /cache/magisk.log /cache/last_magisk.log /cache/magiskhide.log /cache/.disable_magisk \ rm -rf /cache/magisk.log /cache/last_magisk.log /cache/magiskhide.log /cache/.disable_magisk \
/cache/magisk /cache/magisk_merge /cache/magisk_mount /cache/unblock /cache/magisk_uninstaller.sh \ /cache/magisk /cache/magisk_merge /cache/magisk_mount /cache/unblock /cache/magisk_uninstaller.sh \
/data/Magisk.apk /data/magisk.apk /data/magisk.img /data/magisk_merge.img \ /data/Magisk.apk /data/magisk.apk /data/magisk.img /data/magisk_merge.img /data/magisk_debug.log \
/data/busybox /data/magisk /data/custom_ramdisk_patch.sh 2>/dev/null /data/busybox /data/magisk /data/custom_ramdisk_patch.sh 2>/dev/null
$BOOTMODE && reboot $BOOTMODE && reboot