mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-11-27 20:15:29 +00:00
391 lines
12 KiB
Bash
391 lines
12 KiB
Bash
##########################################################################################
|
|
#
|
|
# Magisk General Utility Functions
|
|
# by topjohnwu
|
|
#
|
|
# Used everywhere in Magisk
|
|
#
|
|
##########################################################################################
|
|
|
|
#MAGISK_VERSION_STUB
|
|
SCRIPT_VERSION=$MAGISK_VER_CODE
|
|
|
|
# Detect whether in boot mode
|
|
ps | grep zygote | grep -v grep >/dev/null && BOOTMODE=true || BOOTMODE=false
|
|
$BOOTMODE || ps -A 2>/dev/null | grep zygote | grep -v grep >/dev/null && BOOTMODE=true
|
|
$BOOTMODE || id | grep -q 'uid=0' || BOOTMODE=true
|
|
|
|
# Default location, will override if needed
|
|
MAGISKBIN=/data/adb/magisk
|
|
[ -z $MOUNTPATH ] && MOUNTPATH=/sbin/.core/img
|
|
[ -z $IMG ] && IMG=/data/adb/magisk.img
|
|
|
|
BOOTSIGNER="/system/bin/dalvikvm -Xnodex2oat -Xnoimage-dex2oat -cp \$APK com.topjohnwu.magisk.utils.BootSigner"
|
|
BOOTSIGNED=false
|
|
|
|
get_outfd() {
|
|
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
|
|
}
|
|
|
|
ui_print() {
|
|
$BOOTMODE && echo "$1" || echo -e "ui_print $1\nui_print" >> /proc/self/fd/$OUTFD
|
|
}
|
|
|
|
mount_partitions() {
|
|
# Check A/B slot
|
|
if [ "`grep_prop ro.build.ab_update`" = "true" ]; then
|
|
SLOT=`grep_cmdline androidboot.slot_suffix`
|
|
if [ -z $SLOT ]; then
|
|
SLOT=_`grep_cmdline androidboot.slot`
|
|
[ $SLOT = "_" ] && SLOT=
|
|
fi
|
|
fi
|
|
[ -z $SLOT ] || ui_print "- A/B partition, current slot: $SLOT"
|
|
|
|
ui_print "- Mounting /system, /vendor"
|
|
[ -f /system/build.prop ] || is_mounted /system || mount -o ro /system 2>/dev/null
|
|
if ! is_mounted /system && ! [ -f /system/build.prop ]; then
|
|
SYSTEMBLOCK=`find /dev/block -iname system$SLOT | head -n 1`
|
|
mount -t ext4 -o ro $SYSTEMBLOCK /system
|
|
fi
|
|
[ -f /system/build.prop ] || is_mounted /system || abort "! Cannot mount /system"
|
|
cat /proc/mounts | grep -E '/dev/root|/system_root' >/dev/null && SYSTEM_ROOT=true || SYSTEM_ROOT=false
|
|
if [ -f /system/init ]; then
|
|
SYSTEM_ROOT=true
|
|
mkdir /system_root 2>/dev/null
|
|
mount --move /system /system_root
|
|
mount -o bind /system_root/system /system
|
|
fi
|
|
$SYSTEM_ROOT && ui_print "- Device using system_root_image"
|
|
if [ -L /system/vendor ]; then
|
|
# Seperate /vendor partition
|
|
is_mounted /vendor || mount -o ro /vendor 2>/dev/null
|
|
if ! is_mounted /vendor; then
|
|
VENDORBLOCK=`find /dev/block -iname vendor$SLOT | head -n 1`
|
|
mount -t ext4 -o ro $VENDORBLOCK /vendor
|
|
fi
|
|
is_mounted /vendor || abort "! Cannot mount /vendor"
|
|
fi
|
|
}
|
|
|
|
grep_cmdline() {
|
|
REGEX="s/^$1=//p"
|
|
sed -E 's/ +/\n/g' /proc/cmdline | sed -n "$REGEX" 2>/dev/null
|
|
}
|
|
|
|
grep_prop() {
|
|
REGEX="s/^$1=//p"
|
|
shift
|
|
FILES=$@
|
|
[ -z "$FILES" ] && FILES='/system/build.prop'
|
|
sed -n "$REGEX" $FILES 2>/dev/null | head -n 1
|
|
}
|
|
|
|
getvar() {
|
|
local VARNAME=$1
|
|
local VALUE=
|
|
VALUE=`grep_prop $VARNAME /.backup/.magisk /data/.magisk /cache/.magisk /system/.magisk`
|
|
[ ! -z $VALUE ] && eval $VARNAME=\$VALUE
|
|
}
|
|
|
|
find_boot_image() {
|
|
BOOTIMAGE=
|
|
if [ ! -z $SLOT ]; then
|
|
BOOTIMAGE=`find /dev/block -iname boot$SLOT | head -n 1` 2>/dev/null
|
|
else
|
|
for BLOCK in ramdisk boot_a kern-a android_boot kernel boot lnx bootimg; do
|
|
BOOTIMAGE=`find /dev/block -iname $BLOCK | head -n 1` 2>/dev/null
|
|
[ ! -z $BOOTIMAGE ] && break
|
|
done
|
|
fi
|
|
# Recovery fallback
|
|
if [ -z $BOOTIMAGE ]; then
|
|
for FSTAB in /etc/*fstab*; do
|
|
BOOTIMAGE=`grep -v '#' $FSTAB | grep -E '/boot[^a-zA-Z]' | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
|
|
[ ! -z $BOOTIMAGE ] && break
|
|
done
|
|
fi
|
|
[ ! -z $BOOTIMAGE ] && BOOTIMAGE=`readlink -f $BOOTIMAGE`
|
|
}
|
|
|
|
run_migrations() {
|
|
# Update the broken boot backup
|
|
if [ -f /data/stock_boot_.img.gz ]; then
|
|
$MAGISKBIN/magiskboot --decompress /data/stock_boot_.img.gz /data/stock_boot.img
|
|
fi
|
|
# Update our previous backup to new format if exists
|
|
if [ -f /data/stock_boot.img ]; then
|
|
ui_print "- Migrating boot image backup"
|
|
SHA1=`$MAGISKBIN/magiskboot --sha1 /data/stock_boot.img 2>/dev/null`
|
|
STOCKDUMP=/data/stock_boot_${SHA1}.img
|
|
mv /data/stock_boot.img $STOCKDUMP
|
|
$MAGISKBIN/magiskboot --compress $STOCKDUMP
|
|
fi
|
|
# Move the stock backups
|
|
if [ -f /data/magisk/stock_boot* ]; then
|
|
rm -rf /data/stock_boot*
|
|
mv /data/magisk/stock_boot* /data 2>/dev/null
|
|
fi
|
|
if [ -f /data/adb/magisk/stock_boot* ]; then
|
|
rm -rf /data/stock_boot*
|
|
mv /data/adb/magisk/stock_boot* /data 2>/dev/null
|
|
fi
|
|
# Remove old dbs
|
|
rm -f /data/user*/*/magisk.db
|
|
[ -L /data/magisk.img ] || mv /data/magisk.img /data/adb/magisk.img 2>/dev/null
|
|
}
|
|
|
|
flash_boot_image() {
|
|
# Make sure all blocks are writable
|
|
$MAGISKBIN/magisk --unlock-blocks 2>/dev/null
|
|
case "$1" in
|
|
*.gz) COMMAND="gzip -d < '$1'";;
|
|
*) COMMAND="cat '$1'";;
|
|
esac
|
|
if $BOOTSIGNED; then
|
|
SIGNCOM="$BOOTSIGNER -sign"
|
|
ui_print "- Sign boot image with test keys"
|
|
else
|
|
SIGNCOM="cat -"
|
|
fi
|
|
case "$2" in
|
|
/dev/block/*)
|
|
ui_print "- Flashing new boot image"
|
|
eval $COMMAND | eval $SIGNCOM | cat - /dev/zero 2>/dev/null | dd of="$2" bs=4096 2>/dev/null
|
|
;;
|
|
*)
|
|
ui_print "- Storing new boot image"
|
|
eval $COMMAND | eval $SIGNCOM | dd of="$2" bs=4096 2>/dev/null
|
|
;;
|
|
esac
|
|
}
|
|
|
|
find_dtbo_image() {
|
|
DTBOIMAGE=`find /dev/block -iname dtbo$SLOT | head -n 1` 2>/dev/null
|
|
[ ! -z $DTBOIMAGE ] && DTBOIMAGE=`readlink -f $DTBOIMAGE`
|
|
}
|
|
|
|
patch_dtbo_image() {
|
|
if [ ! -z $DTBOIMAGE ]; then
|
|
if $MAGISKBIN/magiskboot --dtb-test $DTBOIMAGE; then
|
|
ui_print "- Backing up stock dtbo image"
|
|
$MAGISKBIN/magiskboot --compress $DTBOIMAGE $MAGISKBIN/stock_dtbo.img.gz
|
|
ui_print "- Patching fstab in dtbo to remove avb-verity"
|
|
$MAGISKBIN/magiskboot --dtb-patch $DTBOIMAGE
|
|
return 0
|
|
fi
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
restore_imgs() {
|
|
STOCKBOOT=/data/stock_boot_${1}.img.gz
|
|
STOCKDTBO=/data/stock_dtbo.img.gz
|
|
|
|
# Make sure all blocks are writable
|
|
$MAGISKBIN/magisk --unlock-blocks 2>/dev/null
|
|
find_dtbo_image
|
|
if [ ! -z "$DTBOIMAGE" -a -f "$STOCKDTBO" ]; then
|
|
ui_print "- Restoring stock dtbo image"
|
|
gzip -d < $STOCKDTBO | dd of=$DTBOIMAGE
|
|
fi
|
|
BOOTSIGNED=false
|
|
find_boot_image
|
|
if [ ! -z "$BOOTIMAGE" -a -f "$STOCKBOOT" ]; then
|
|
ui_print "- Restoring stock boot image"
|
|
gzip -d < $STOCKBOOT | cat - /dev/zero 2>/dev/null | dd of="$BOOTIMAGE" bs=4096 2>/dev/null
|
|
return 0
|
|
fi
|
|
return 1
|
|
}
|
|
|
|
sign_chromeos() {
|
|
ui_print "- Signing ChromeOS boot image"
|
|
|
|
echo > empty
|
|
./chromeos/futility vbutil_kernel --pack new-boot.img.signed \
|
|
--keyblock ./chromeos/kernel.keyblock --signprivate ./chromeos/kernel_data_key.vbprivk \
|
|
--version 1 --vmlinuz new-boot.img --config empty --arch arm --bootloader empty --flags 0x1
|
|
|
|
rm -f empty new-boot.img
|
|
mv new-boot.img.signed new-boot.img
|
|
}
|
|
|
|
is_mounted() {
|
|
cat /proc/mounts | grep -q " `readlink -f $1` " 2>/dev/null
|
|
return $?
|
|
}
|
|
|
|
remove_system_su() {
|
|
if [ -f /system/bin/su -o -f /system/xbin/su ] && [ ! -f /su/bin/su ]; then
|
|
ui_print "! System installed root detected, mount rw :("
|
|
mount -o rw,remount /system
|
|
# SuperSU
|
|
if [ -e /system/bin/.ext/.su ]; then
|
|
mv -f /system/bin/app_process32_original /system/bin/app_process32 2>/dev/null
|
|
mv -f /system/bin/app_process64_original /system/bin/app_process64 2>/dev/null
|
|
mv -f /system/bin/install-recovery_original.sh /system/bin/install-recovery.sh 2>/dev/null
|
|
cd /system/bin
|
|
if [ -e app_process64 ]; then
|
|
ln -sf app_process64 app_process
|
|
else
|
|
ln -sf app_process32 app_process
|
|
fi
|
|
fi
|
|
rm -rf /system/.pin /system/bin/.ext /system/etc/.installed_su_daemon /system/etc/.has_su_daemon \
|
|
/system/xbin/daemonsu /system/xbin/su /system/xbin/sugote /system/xbin/sugote-mksh /system/xbin/supolicy \
|
|
/system/bin/app_process_init /system/bin/su /cache/su /system/lib/libsupol.so /system/lib64/libsupol.so \
|
|
/system/su.d /system/etc/install-recovery.sh /system/etc/init.d/99SuperSUDaemon /cache/install-recovery.sh \
|
|
/system/.supersu /cache/.supersu /data/.supersu \
|
|
/system/app/Superuser.apk /system/app/SuperSU /cache/Superuser.apk 2>/dev/null
|
|
fi
|
|
}
|
|
|
|
api_level_arch_detect() {
|
|
API=`grep_prop ro.build.version.sdk`
|
|
ABI=`grep_prop ro.product.cpu.abi | cut -c-3`
|
|
ABI2=`grep_prop ro.product.cpu.abi2 | cut -c-3`
|
|
ABILONG=`grep_prop ro.product.cpu.abi`
|
|
|
|
ARCH=arm
|
|
ARCH32=arm
|
|
IS64BIT=false
|
|
if [ "$ABI" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
|
|
if [ "$ABI2" = "x86" ]; then ARCH=x86; ARCH32=x86; fi;
|
|
if [ "$ABILONG" = "arm64-v8a" ]; then ARCH=arm64; ARCH32=arm; IS64BIT=true; fi;
|
|
if [ "$ABILONG" = "x86_64" ]; then ARCH=x64; ARCH32=x86; IS64BIT=true; fi;
|
|
}
|
|
|
|
boot_actions() {
|
|
if [ ! -d /sbin/.core/mirror/bin ]; then
|
|
mkdir -p /sbin/.core/mirror/bin
|
|
mount -o bind $MAGISKBIN /sbin/.core/mirror/bin
|
|
fi
|
|
MAGISKBIN=/sbin/.core/mirror/bin
|
|
}
|
|
|
|
recovery_actions() {
|
|
# TWRP bug fix
|
|
mount -o bind /dev/urandom /dev/random
|
|
# Preserve environment varibles
|
|
OLD_PATH=$PATH
|
|
if [ ! -d $TMPDIR/bin ]; then
|
|
# Add busybox to PATH
|
|
mkdir -p $TMPDIR/bin
|
|
ln -s $MAGISKBIN/busybox $TMPDIR/bin/busybox
|
|
$MAGISKBIN/busybox --install -s $TMPDIR/bin
|
|
export PATH=$TMPDIR/bin:$PATH
|
|
fi
|
|
# Temporarily block out all custom recovery binaries/libs
|
|
mv /sbin /sbin_tmp
|
|
# Unset library paths
|
|
OLD_LD_LIB=$LD_LIBRARY_PATH
|
|
OLD_LD_PRE=$LD_PRELOAD
|
|
unset LD_LIBRARY_PATH
|
|
unset LD_PRELOAD
|
|
}
|
|
|
|
recovery_cleanup() {
|
|
mv /sbin_tmp /sbin 2>/dev/null
|
|
[ -z $OLD_PATH ] || export PATH=$OLD_PATH
|
|
[ -z $OLD_LD_LIB ] || export LD_LIBRARY_PATH=$OLD_LD_LIB
|
|
[ -z $OLD_LD_PRE ] || export LD_PRELOAD=$OLD_LD_PRE
|
|
ui_print "- Unmounting partitions"
|
|
umount -l /system_root 2>/dev/null
|
|
umount -l /system 2>/dev/null
|
|
umount -l /vendor 2>/dev/null
|
|
umount -l /dev/random 2>/dev/null
|
|
}
|
|
|
|
abort() {
|
|
ui_print "$1"
|
|
$BOOTMODE || recovery_cleanup
|
|
exit 1
|
|
}
|
|
|
|
set_perm() {
|
|
chown $2:$3 $1 || return 1
|
|
chmod $4 $1 || return 1
|
|
[ -z $5 ] && chcon 'u:object_r:system_file:s0' $1 || chcon $5 $1 || return 1
|
|
}
|
|
|
|
set_perm_recursive() {
|
|
find $1 -type d 2>/dev/null | while read dir; do
|
|
set_perm $dir $2 $3 $4 $6
|
|
done
|
|
find $1 -type f -o -type l 2>/dev/null | while read file; do
|
|
set_perm $file $2 $3 $5 $6
|
|
done
|
|
}
|
|
|
|
mktouch() {
|
|
mkdir -p ${1%/*} 2>/dev/null
|
|
[ -z $2 ] && touch $1 || echo $2 > $1
|
|
chmod 644 $1
|
|
}
|
|
|
|
request_size_check() {
|
|
reqSizeM=`du -s $1 | cut -f1`
|
|
reqSizeM=$((reqSizeM / 1024 + 1))
|
|
}
|
|
|
|
request_zip_size_check() {
|
|
reqSizeM=`unzip -l "$1" | tail -n 1 | awk '{ print int($1 / 1048567 + 1) }'`
|
|
}
|
|
|
|
image_size_check() {
|
|
SIZE="`$MAGISKBIN/magisk --imgsize $IMG`"
|
|
curUsedM=`echo "$SIZE" | cut -d" " -f1`
|
|
curSizeM=`echo "$SIZE" | cut -d" " -f2`
|
|
curFreeM=$((curSizeM - curUsedM))
|
|
}
|
|
|
|
mount_magisk_img() {
|
|
[ -z reqSizeM ] && reqSizeM=0
|
|
if [ -f "$IMG" ]; then
|
|
ui_print "- Found $IMG"
|
|
image_size_check $IMG
|
|
if [ "$reqSizeM" -gt "$curFreeM" ]; then
|
|
newSizeM=$(((reqSizeM + curUsedM) / 32 * 32 + 64))
|
|
ui_print "- Resizing $IMG to ${newSizeM}M"
|
|
$MAGISKBIN/magisk --resizeimg $IMG $newSizeM >&2
|
|
fi
|
|
else
|
|
newSizeM=$((reqSizeM / 32 * 32 + 64));
|
|
ui_print "- Creating $IMG with size ${newSizeM}M"
|
|
$MAGISKBIN/magisk --createimg $IMG $newSizeM >&2
|
|
fi
|
|
|
|
ui_print "- Mounting $IMG to $MOUNTPATH"
|
|
mkdir -p $MOUNTPATH 2>/dev/null
|
|
MAGISKLOOP=`$MAGISKBIN/magisk --mountimg $IMG $MOUNTPATH`
|
|
is_mounted $MOUNTPATH || abort "! $IMG mount failed..."
|
|
}
|
|
|
|
unmount_magisk_img() {
|
|
$MAGISKBIN/magisk --umountimg $MOUNTPATH $MAGISKLOOP
|
|
|
|
# Shrink the image if possible
|
|
image_size_check $IMG
|
|
newSizeM=$((curUsedM / 32 * 32 + 64))
|
|
if [ $curSizeM -gt $newSizeM ]; then
|
|
ui_print "- Shrinking $IMG to ${newSizeM}M"
|
|
$MAGISKBIN/magisk --resizeimg $IMG $newSizeM
|
|
fi
|
|
}
|
|
|