2016-12-08 01:24:27 -08:00

264 lines
7.6 KiB
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#!/sbin/sh
##########################################################################################
#
# Magisk Uninstaller
# by topjohnwu
#
# This zip will remove all Magisk related files and revert boot image
#
##########################################################################################
INSTALLER=/tmp/uninstall
# Boot Image Variables
CHROMEDIR=$INSTALLER/chromeos
NEWBOOT=$TMPDIR/boottmp/new-boot.img
UNPACKDIR=$TMPDIR/boottmp/bootunpack
RAMDISK=$TMPDIR/boottmp/ramdisk
# Default permissions
umask 022
##########################################################################################
# Flashable update-binary preparation
##########################################################################################
OUTFD=$2
ZIP=$3
readlink /proc/$$/fd/$OUTFD 2>/dev/null | grep /tmp >/dev/null
if [ "$?" -eq "0" ]; then
OUTFD=0
for FD in `ls /proc/$$/fd`; do
readlink /proc/$$/fd/$FD 2>/dev/null | grep pipe >/dev/null
if [ "$?" -eq "0" ]; then
ps | grep " 3 $FD " | grep -v grep >/dev/null
if [ "$?" -eq "0" ]; then
OUTFD=$FD
break
fi
fi
done
fi
mkdir -p $INSTALLER
cd $INSTALLER
unzip -o "$ZIP"
##########################################################################################
# Functions
##########################################################################################
ui_print() {
echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
}
getvar() {
local VARNAME=$1
local VALUE=$(eval echo \$"$VARNAME");
for FILE in /data/.magisk /cache/.magisk /system/.magisk; do
if [ -z "$VALUE" ]; then
LINE=$(cat $FILE 2>/dev/null | grep "$VARNAME=")
if [ ! -z "$LINE" ]; then
VALUE=${LINE#*=}
fi
fi
done
eval $VARNAME=\$VALUE
}
find_boot_image() {
if [ -z "$BOOTIMAGE" ]; then
for PARTITION in kern-a KERN-A android_boot ANDROID_BOOT kernel KERNEL boot BOOT lnx LNX; do
BOOTIMAGE=`readlink /dev/block/by-name/$PARTITION || readlink /dev/block/platform/*/by-name/$PARTITION || readlink /dev/block/platform/*/*/by-name/$PARTITION`
if [ ! -z "$BOOTIMAGE" ]; then break; fi
done
fi
if [ -z "$BOOTIMAGE" ]; then
FSTAB="/etc/recovery.fstab"
[ ! -f "$FSTAB" ] && FSTAB="/etc/recovery.fstab.bak"
[ -f "$FSTAB" ] && BOOTIMAGE=`grep -E '\b/boot\b' "$FSTAB" | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
fi
}
is_mounted() {
if [ ! -z "$2" ]; then
cat /proc/mounts | grep $1 | grep $2, >/dev/null
else
cat /proc/mounts | grep $1 >/dev/null
fi
return $?
}
grep_prop() {
REGEX="s/^$1=//p"
shift
FILES=$@
if [ -z "$FILES" ]; then
FILES='/system/build.prop'
fi
cat $FILES 2>/dev/null | sed -n $REGEX | head -n 1
}
unpack_boot() {
rm -rf $UNPACKDIR $RAMDISK 2>/dev/null
mkdir -p $UNPACKDIR
mkdir -p $RAMDISK
cd $UNPACKDIR
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/bootimgtools --extract $1
cd $RAMDISK
gunzip -c < $UNPACKDIR/ramdisk.gz | cpio -i
}
repack_boot() {
cd $RAMDISK
find . | cpio -o -H newc 2>/dev/null | gzip -9 > $UNPACKDIR/ramdisk.gz
cd $UNPACKDIR
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/bootimgtools --repack $ORIGBOOT
if [ -f chromeos ]; then
echo " " > config
echo " " > bootloader
LD_LIBRARY_PATH=$SYSTEMLIB $CHROMEDIR/futility vbutil_kernel --pack new-boot.img.signed --keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk --version 1 --vmlinuz new-boot.img --config config --arch arm --bootloader bootloader --flags 0x1
rm -f new-boot.img
mv new-boot.img.signed new-boot.img
fi
if ($SAMSUNG); then
SAMSUNG_CHECK=$(cat new-boot.img | grep SEANDROIDENFORCE)
if [ $? -ne 0 ]; then
echo -n "SEANDROIDENFORCE" >> new-boot.img
fi
fi
mv new-boot.img $NEWBOOT
}
revert_boot() {
rm -rf $TMPDIR/boottmp 2>/dev/null
mkdir -p $TMPDIR/boottmp
ORIGBOOT=$BOOTIMAGE
ui_print "- Unpacking boot image"
unpack_boot $ORIGBOOT
if [ -d ".backup" ]; then
ui_print "- Restoring ramdisk with backup"
cp -af .backup/. .
rm -rf magisk init.magisk.rc sbin/magic_mask.sh .backup 2>/dev/null
else
ui_print "! No ramdisk backup found"
ui_print "! Unable to revert completely"
ui_print "! Will still remove Magisk additions"
# Removing boot image modifications
rm -rf magisk init.magisk.rc sbin/magic_mask.sh 2>/dev/null
fi
ui_print "- Repacking boot image"
repack_boot
}
##########################################################################################
# Main
##########################################################################################
ui_print "*****************************"
ui_print " Magisk Uninstaller "
ui_print "*****************************"
if [ ! -d "$INSTALLER/arm" ]; then
ui_print "! Failed: Unable to extract zip file!"
exit 1
fi
ui_print "- Mounting /system(ro), /cache, /data"
mount -o ro /system 2>/dev/null
mount /cache 2>/dev/null
mount /data 2>/dev/null
if [ ! -f '/system/build.prop' ]; then
ui_print "! Failed: /system could not be mounted!"
exit 1
fi
SAMSUNG=false
SAMSUNG_CHECK=$(cat /system/build.prop | grep "ro.build.fingerprint=" | grep -i "samsung")
if [ $? -eq 0 ]; then
SAMSUNG=true
fi
API=$(grep_prop ro.build.version.sdk)
ABI=$(grep_prop ro.product.cpu.abi | cut -c-3)
ABI2=$(grep_prop ro.product.cpu.abi2 | cut -c-3)
ABILONG=$(grep_prop ro.product.cpu.abi)
ARCH=arm
IS64BIT=false
if [ "$ABI" = "x86" ]; then ARCH=x86; fi;
if [ "$ABI2" = "x86" ]; then ARCH=x86; fi;
if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=true; fi;
if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=true; fi;
ui_print "- Device platform: $ARCH"
BINDIR=$INSTALLER/$ARCH
chmod -R 755 $CHROMEDIR/futility $BINDIR
SYSTEMLIB=/system/lib
($IS64BIT) && SYSTEMLIB=/system/lib64
find_boot_image
if [ -z "$BOOTIMAGE" ]; then
ui_print "! Unable to detect boot image"
exit 1
fi
##########################################################################################
# Detection all done, start installing
##########################################################################################
ui_print "- Found Boot Image: $BOOTIMAGE"
if (is_mounted /data); then
PATH=/data/busybox:$PATH
cp -af /data/stock_boot_*.gz /data/stock_boot.img.gz 2>/dev/null
gzip -d /data/stock_boot.img.gz 2>/dev/null
rm -rf /data/stock_boot.img.gz 2>/dev/null
if [ -f "/data/stock_boot.img" ]; then
ui_print "- Boot image backup found!"
NEWBOOT=/data/stock_boot.img
else
ui_print "! Boot image backup unavalible, try using ramdisk backup"
revert_boot
fi
ui_print "- Removing Magisk files"
rm -rf /cache/magisk.log /cache/last_magisk.log /cache/magiskhide.log \
/cache/magisk /cache/magisk_merge /cache/magisk_mount /cache/unblock \
/data/Magisk.apk /data/magisk.img /data/magisk_merge.img \
/data/busybox /data/magisk /data/custom_ramdisk_patch.sh 2>/dev/null
else
ui_print "! Data unavailable"
ui_print "! Impossible to restore original boot image"
ui_print "! Try using ramdisk backup"
revert_boot
ui_print "- Removing Magisk files"
rm -rf /cache/magisk.log /cache/last_magisk.log /cache/magiskhide.log \
/cache/magisk /cache/magisk_merge /cache/magisk_mount /cache/unblock 2>/dev/null
ui_print "*****************************************"
ui_print " Magisk is not fully removed yet "
ui_print " Please manually remove /data/magisk.img "
ui_print "*****************************************"
fi
chmod 644 $NEWBOOT
ui_print "- Flashing reverted image"
[ ! -L "$BOOTIMAGE" ] && dd if=/dev/zero of=$BOOTIMAGE bs=4096 2>/dev/null
dd if=$NEWBOOT of=$BOOTIMAGE bs=4096
umount /system
ui_print "- Done"
exit 0