mirror of
https://github.com/topjohnwu/Magisk
synced 2024-11-13 20:54:12 +01:00
355 lines
9.7 KiB
Bash
355 lines
9.7 KiB
Bash
#!/sbin/sh
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##########################################################################################
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#
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# Magisk Flash Script
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# by topjohnwu
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#
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# This script will detect, construct the environment for Magisk
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# It will then call boot_patch.sh to patch the boot image
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#
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##########################################################################################
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# Detect whether in boot mode
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ps | grep zygote | grep -v grep >/dev/null && BOOTMODE=true || BOOTMODE=false
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$BOOTMODE || ps -A 2>/dev/null | grep zygote | grep -v grep >/dev/null && BOOTMODE=true
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# This path should work in any cases
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TMPDIR=/dev/tmp
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INSTALLER=$TMPDIR/magisk
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COMMONDIR=$INSTALLER/common
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CHROMEDIR=$INSTALLER/chromeos
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COREDIR=/magisk/.core
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# Default permissions
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umask 022
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##########################################################################################
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# Flashable update-binary preparation
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##########################################################################################
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OUTFD=$2
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ZIP=$3
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readlink /proc/$$/fd/$OUTFD 2>/dev/null | grep /tmp >/dev/null
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if [ "$?" -eq "0" ]; then
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OUTFD=0
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for FD in `ls /proc/$$/fd`; do
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readlink /proc/$$/fd/$FD 2>/dev/null | grep pipe >/dev/null
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if [ "$?" -eq "0" ]; then
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ps | grep " 3 $FD " | grep -v grep >/dev/null
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if [ "$?" -eq "0" ]; then
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OUTFD=$FD
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break
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fi
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fi
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done
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fi
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mkdir -p $INSTALLER
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cd $INSTALLER
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unzip -o "$ZIP"
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##########################################################################################
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# Functions
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##########################################################################################
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ui_print() {
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if $BOOTMODE; then
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echo "$1"
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else
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echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
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echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
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fi
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}
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getvar() {
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local VARNAME=$1
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local VALUE=$(eval echo \$"$VARNAME");
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for FILE in /dev/.magisk /data/.magisk /cache/.magisk /system/.magisk; do
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if [ -z "$VALUE" ]; then
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LINE=$(cat $FILE 2>/dev/null | grep "$VARNAME=")
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if [ ! -z "$LINE" ]; then
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VALUE=${LINE#*=}
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fi
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fi
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done
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eval $VARNAME=\$VALUE
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}
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find_boot_image() {
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if [ -z "$BOOTIMAGE" ]; then
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for PARTITION in kern-a android_boot kernel boot lnx; do
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BOOTIMAGE=`find /dev -iname "$PARTITION"`
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[ ! -z $BOOTIMAGE ] && break
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done
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fi
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# Recovery fallback
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if [ -z "$BOOTIMAGE" ]; then
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for FSTAB in /etc/*fstab*; do
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BOOTIMAGE=`grep -E '\b/boot\b' $FSTAB | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
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[ ! -z $BOOTIMAGE ] && break
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done
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fi
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[ -L "$BOOTIMAGE" ] && BOOTIMAGE=`readlink $BOOTIMAGE`
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}
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is_mounted() {
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if [ ! -z "$2" ]; then
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cat /proc/mounts | grep $1 | grep $2, >/dev/null
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else
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cat /proc/mounts | grep $1 >/dev/null
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fi
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return $?
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}
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mount_image() {
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if [ ! -d "$2" ]; then
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mount -o rw,remount rootfs /
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mkdir -p $2 2>/dev/null
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($BOOTMODE) && mount -o ro,remount rootfs /
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[ ! -d "$2" ] && return 1
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fi
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if (! is_mounted $2); then
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LOOPDEVICE=
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for LOOP in 0 1 2 3 4 5 6 7; do
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if (! is_mounted $2); then
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LOOPDEVICE=/dev/block/loop$LOOP
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if [ ! -f "$LOOPDEVICE" ]; then
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mknod $LOOPDEVICE b 7 $LOOP 2>/dev/null
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fi
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losetup $LOOPDEVICE $1
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if [ "$?" -eq "0" ]; then
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mount -t ext4 -o loop $LOOPDEVICE $2
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if (! is_mounted $2); then
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/system/bin/toolbox mount -t ext4 -o loop $LOOPDEVICE $2
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fi
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if (! is_mounted $2); then
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/system/bin/toybox mount -t ext4 -o loop $LOOPDEVICE $2
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fi
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fi
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if (is_mounted $2); then
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ui_print "- Mounting $1 to $2"
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break;
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fi
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fi
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done
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fi
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}
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grep_prop() {
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REGEX="s/^$1=//p"
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shift
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FILES=$@
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if [ -z "$FILES" ]; then
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FILES='/system/build.prop'
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fi
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cat $FILES 2>/dev/null | sed -n "$REGEX" | head -n 1
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}
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remove_system_su() {
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if [ -f /system/bin/su -o -f /system/xbin/su ] && [ ! -f /su/bin/su ]; then
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ui_print "! System installed root detected, mount rw :("
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mount -o rw,remount /system
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# SuperSU
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if [ -e /system/bin/.ext/.su ]; then
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mv -f /system/bin/app_process32_original /system/bin/app_process32 2>/dev/null
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mv -f /system/bin/app_process64_original /system/bin/app_process64 2>/dev/null
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mv -f /system/bin/install-recovery_original.sh /system/bin/install-recovery.sh 2>/dev/null
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cd /system/bin
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if [ -e app_process64 ]; then
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ln -sf app_process64 app_process
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else
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ln -sf app_process32 app_process
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fi
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fi
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rm -rf /system/.pin /system/bin/.ext /system/etc/.installed_su_daemon /system/etc/.has_su_daemon \
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/system/xbin/daemonsu /system/xbin/su /system/xbin/sugote /system/xbin/sugote-mksh /system/xbin/supolicy \
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/system/bin/app_process_init /system/bin/su /cache/su /system/lib/libsupol.so /system/lib64/libsupol.so \
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/system/su.d /system/etc/install-recovery.sh /system/etc/init.d/99SuperSUDaemon /cache/install-recovery.sh \
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/system/.supersu /cache/.supersu /data/.supersu \
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/system/app/Superuser.apk /system/app/SuperSU /cache/Superuser.apk 2>/dev/null
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fi
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}
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##########################################################################################
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# Detection
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##########################################################################################
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ui_print "************************"
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ui_print "* MAGISK_VERSION_STUB"
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ui_print "************************"
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if [ ! -d "$COMMONDIR" ]; then
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ui_print "! Failed: Unable to extract zip file!"
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exit 1
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fi
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ui_print "- Mounting /system(ro), /cache, /data"
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mount -o ro /system 2>/dev/null
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mount /cache 2>/dev/null
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mount /data 2>/dev/null
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if [ ! -f '/system/build.prop' ]; then
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ui_print "! Failed: /system could not be mounted!"
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exit 1
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fi
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# Prefer binaries and libs in /system
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[ -e /vendor ] || ln -s /system/vendor /vendor
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export PATH=/system/bin:/system/xbin:/vendor/bin:$PATH
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export LD_LIBRARY_PATH=/system/lib:/vendor/lib:/sbin
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[ -d /system/lib64 ] && export LD_LIBRARY_PATH=/system/lib64:/vendor/lib64:/sbin
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# read override variables
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getvar KEEPVERITY
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getvar KEEPFORCEENCRYPT
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getvar BOOTIMAGE
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# Check if system root is installed and remove
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remove_system_su
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API=`grep_prop ro.build.version.sdk`
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ABI=`grep_prop ro.product.cpu.abi | cut -c-3`
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ABI2=`grep_prop ro.product.cpu.abi2 | cut -c-3`
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ABILONG=`grep_prop ro.product.cpu.abi`
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ARCH=arm
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IS64BIT=false
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if [ "$ABI" = "x86" ]; then ARCH=x86; fi;
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if [ "$ABI2" = "x86" ]; then ARCH=x86; fi;
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if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; IS64BIT=true; fi;
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if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; IS64BIT=true; fi;
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if [ "$API" -lt "21" ]; then
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ui_print "! Magisk is only for Lollipop 5.0+ (SDK 21+)"
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exit 1
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fi
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ui_print "- Device platform: $ARCH"
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BINDIR=$INSTALLER/$ARCH
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chmod -R 755 $CHROMEDIR $BINDIR
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$IS64BIT && SYSTEMLIB=/system/lib64 || SYSTEMLIB=/system/lib
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find_boot_image
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if [ -z $BOOTIMAGE ]; then
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ui_print "! Unable to detect boot image"
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exit 1
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fi
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##########################################################################################
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# Environment
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##########################################################################################
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ui_print "- Constructing environment"
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is_mounted /data && MAGISKBIN=/data/magisk || MAGISKBIN=/cache/data_bin
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# Copy required files
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rm -rf $MAGISKBIN 2>/dev/null
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mkdir -p $MAGISKBIN
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cp -af $BINDIR/. $COMMONDIR/. $MAGISKBIN
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chmod -R 755 $MAGISKBIN
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chcon -hR u:object_r:system_file:s0 $MAGISKBIN
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##########################################################################################
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# Magisk Image
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##########################################################################################
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# Fix SuperSU.....
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$BOOTMODE && $BINDIR/magiskpolicy --live "allow fsck * * *"
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if (is_mounted /data); then
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IMG=/data/magisk.img
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else
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IMG=/cache/magisk.img
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ui_print "- Data unavailable, use cache workaround"
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fi
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if [ -f $IMG ]; then
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ui_print "- $IMG detected!"
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else
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ui_print "- Creating $IMG"
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$BINDIR/magisk --createimg $IMG 64M
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fi
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mount_image $IMG /magisk
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if (! is_mounted /magisk); then
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ui_print "! Magisk image mount failed..."
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exit 1
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fi
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MAGISKLOOP=$LOOPDEVICE
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# Core folders
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mkdir -p $COREDIR/props $COREDIR/post-fs-data.d $COREDIR/service.d 2>/dev/null
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chmod -R 755 $COREDIR/post-fs-data.d $COREDIR/service.d
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chown -R 0.0 $COREDIR/post-fs-data.d $COREDIR/service.d
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# Legacy cleanup
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mv $COREDIR/magiskhide/hidelist $COREDIR/hidelist 2>/dev/null
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rm -rf $COREDIR/magiskhide $COREDIR/bin
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##########################################################################################
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# Unpack boot
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##########################################################################################
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ui_print "- Found Boot Image: $BOOTIMAGE"
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# Update our previous backup to new format if exists
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if [ -f /data/stock_boot.img ]; then
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SHA1=`$BINDIR/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 $STOCKDUMP
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$BINDIR/magiskboot --compress $STOCKDUMP
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fi
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SOURCEDMODE=true
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cd $MAGISKBIN
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# Source the boot patcher
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. $COMMONDIR/boot_patch.sh "$BOOTIMAGE"
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# Sign chromeos boot
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if [ -f chromeos ]; then
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echo > empty
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$CHROMEDIR/futility vbutil_kernel --pack new-boot.img.signed \
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--keyblock $CHROMEDIR/kernel.keyblock --signprivate $CHROMEDIR/kernel_data_key.vbprivk \
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--version 1 --vmlinuz new-boot.img --config empty --arch arm --bootloader empty --flags 0x1
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rm -f empty new-boot.img
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mv new-boot.img.signed new-boot.img
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fi
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if is_mounted /data; then
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rm -f /data/stock_boot* 2>/dev/null
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mv stock_boot* /data 2>/dev/null
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fi
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ui_print "- Flashing new boot image"
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if [ -L "$BOOTIMAGE" ]; then
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dd if=new-boot.img of="$BOOTIMAGE" bs=4096
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else
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cat new-boot.img /dev/zero | dd of="$BOOTIMAGE" bs=4096
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fi
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rm -f new-boot.img
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cd /
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if ! $BOOTMODE; then
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ui_print "- Unmounting partitions"
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umount /magisk
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losetup -d $MAGISKLOOP 2>/dev/null
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rmdir /magisk
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umount -l /system
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fi
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ui_print "- Done"
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exit 0
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