init

#!/bin/sh

alias cp='cp 2>/dev/null'
alias rm='rm 2>/dev/null'
alias chattr='chattr 2>/dev/null'
alias chown='chown 2>/dev/null'
alias chmod='chmod 2>/dev/null'

ui_reboot() {
ui_print "- Rebooting in 10 seconds..."
reboot -f -d 10
}

# Try to stay as close to SuperSU's script as possible
BIN=/rootkit
COM=/rootkit

ch_attr() {
[ -e $1 ] && chattr -i $1
}

ui_print() {
echo -n -e "$1\n" > /dev/tty1
}

set_perm() {
chown $1:$2 $4
chmod $3 $4
}

ch_con() {
/sbin/setfattr -n security.selinux -v u:object_r:system_file:s0 $1 2>/dev/null
}

inst() {
cp $1 $2
chmod $3 $2
}

# Prepare a basic working system
mkdir /proc
mkdir /sys
mkdir /d
/bin/mount /proc
/bin/mount /sys
echo /sbin/mdev >/proc/sys/kernel/hotplug
mdev -s

ui_print "\n\n"

MODEL=`cat /proc/device-tree/model`

if [ "$MODEL" == "NVIDIA SHIELD" ]; then
MMCDEV=2
SYSTEMPART=4
elif [ "$MODEL" == "Tegra Note 7" ]; then
MMCDEV=0
SYSTEMPART=5
else
ui_print "- Unknown model $MODEL"
ui_print "- Cannot root this device"
ui_reboot
fi

ui_print "\n\n"
ui_print "- Identified $MODEL"

ui_print "\n\n"
ui_print "*****************"
ui_print "SuperSU installer"
ui_print "*****************"

ui_print "- Waiting for partitions to enumerate"
sleep 5

# emmc device number will change depending on whether the SD card is inserted or not.
# Create the device with the right minor number and mount it
mknod /dev/systempartition b `cat /sys/bus/mmc/devices/mmc$MMCDEV\:0001/block/mmcblk?/mmcblk?p$SYSTEMPART/dev |sed 's/:/ /'`
mknod /dev/datapartition b `cat /sys/bus/mmc/devices/mmc$MMCDEV\:0001/block/mmcblk?/mmcblk?p12/dev |sed 's/:/ /'`

if [ ! -b /dev/systempartition -o ! -b /dev/datapartition ]; then
ui_print "- Cannot find system or data partition, aborting..."
ui_reboot
fi

ui_print "- Mounting /system, /data and rootfs"
mkdir -p /system
mount -text4 /dev/systempartition /system
mkdir -p /data
mount -text4 /dev/datapartition /data

ui_print "- Disabling OTA survival"
ch_attr /system/xbin/su
ch_attr /system/bin/.ext/.su
ch_attr /system/xbin/daemonsu
ch_attr /system/etc/install-recovery.sh

ui_print "- Removing old files"
rm -f /system/bin/su
rm -f /system/xbin/su
rm -f /system/xbin/daemonsu
rm -f /system/bin/.ext/.su
rm -f /system/etc/install-recovery.sh
rm -f /system/etc/init.d/99SuperSUDaemon
rm -f /system/etc/.installed_su_daemon
rm -f /system/app/Superuser.apk
rm -f /system/app/Superuser.odex
rm -f /system/app/SuperUser.apk
rm -f /system/app/SuperUser.odex
rm -f /system/app/superuser.apk
rm -f /system/app/superuser.odex
rm -f /system/app/Supersu.apk
rm -f /system/app/Supersu.odex
rm -f /system/app/SuperSU.apk
rm -f /system/app/SuperSU.odex
rm -f /system/app/supersu.apk
rm -f /system/app/supersu.odex
rm -f /data/dalvik-cache/*com.noshufou.android.su*
rm -f /data/dalvik-cache/*com.koushikdutta.superuser*
rm -f /data/dalvik-cache/*com.mgyun.shua.su*
rm -f /data/dalvik-cache/*Superuser.apk*
rm -f /data/dalvik-cache/*SuperUser.apk*
rm -f /data/dalvik-cache/*superuser.apk*
rm -f /data/dalvik-cache/*eu.chainfire.supersu*
rm -f /data/dalvik-cache/*Supersu.apk*
rm -f /data/dalvik-cache/*SuperSU.apk*
rm -f /data/dalvik-cache/*supersu.apk*
rm -f /data/dalvik-cache/*.oat
rm -f /data/app/com.noshufou.android.su-*
rm -f /data/app/com.koushikdutta.superuser-*
rm -f /data/app/com.mgyun.shua.su-*
rm -f /data/app/eu.chainfire.supersu-*

ui_print "- Creating space"
cp /system/app/Maps.apk /Maps.apk
cp /system/app/GMS_Maps.apk /GMS_Maps.apk
cp /system/app/YouTube.apk /YouTube.apk
rm /system/app/Maps.apk
rm /system/app/GMS_Maps.apk
rm /system/app/YouTube.apk

ui_print "- Placing files"
mkdir -p /system/bin/.ext
cp $BIN/su /system/xbin/daemonsu
cp $BIN/su /system/xbin/su
cp $BIN/su /system/bin/.ext/.su
cp $COM/Superuser.apk /system/app/Superuser.apk
cp $COM/install-recovery.sh /system/etc/install-recovery.sh
cp $COM/99SuperSUDaemon /system/etc/init.d/99SuperSUDaemon
echo 1 > /system/etc/.installed_su_daemon

ui_print "- Restoring files"
cp /Maps.apk /system/app/Maps.apk
cp /GMS_Maps.apk /system/app/GMS_Maps.apk
cp /YouTube.apk /system/app/YouTube.apk
rm /Maps.apk
rm /GMS_Maps.apk
rm /YouTube.apk

ui_print "- Setting permissions"
set_perm 0 0 0777 /system/bin/.ext
set_perm 0 0 06755 /system/bin/.ext/.su
set_perm 0 0 06755 /system/xbin/su
set_perm 0 0 0755 /system/xbin/daemonsu
set_perm 0 0 0755 /system/etc/install-recovery.sh
set_perm 0 0 0755 /system/etc/init.d/99SuperSUDaemon
set_perm 0 0 0644 /system/etc/.installed_su_daemon
set_perm 0 0 0644 /system/app/Superuser.apk
set_perm 0 0 0644 /system/app/Maps.apk
set_perm 0 0 0644 /system/app/GMS_Maps.apk
set_perm 0 0 0644 /system/app/YouTube.apk

ch_con /system/bin/.ext/.su
ch_con /system/xbin/su
ch_con /system/xbin/daemonsu
ch_con /system/etc/install-recovery.sh
ch_con /system/etc/init.d/99SuperSUDaemon
ch_con /system/etc/.installed_su_daemon
ch_con /system/app/Superuser.apk
ch_con /system/app/Maps.apk
ch_con /system/app/GMS_Maps.apk
ch_con /system/app/YouTube.apk

ui_print "- Post-installation script"
/system/xbin/su --install

ui_print "- Unmounting /system and /data"
umount /system
umount /data

ui_print "- Done !"
ui_reboot