magisk-module-audio-policy-fix/META-INF/com/google/android/update-binary

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#!/sbin/sh
##########################################################################################
# Functions
##########################################################################################
ui_print() {
if ($BOOTMODE); then
echo "$1"
else
echo -n -e "ui_print $1\n" >> /proc/self/fd/$OUTFD
echo -n -e "ui_print\n" >> /proc/self/fd/$OUTFD
fi
}
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
}
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 $?
}
mount_image() {
if [ ! -d "$2" ]; then
mkdir -p $2 2>/dev/null
chmod 755 $2
[ ! -d "$2" ] && return 1
fi
if (! is_mounted $2); then
LOOPDEVICE=
for LOOP in 0 1 2 3 4 5 6 7; do
if (! is_mounted $2); then
LOOPDEVICE=/dev/block/loop$LOOP
if [ ! -f "$LOOPDEVICE" ]; then
mknod $LOOPDEVICE b 7 $LOOP
fi
losetup $LOOPDEVICE $1
if [ "$?" -eq "0" ]; then
mount -t ext4 -o loop $LOOPDEVICE $2
if (! is_mounted $2); then
/system/bin/toolbox mount -t ext4 -o loop $LOOPDEVICE $2
fi
if (! is_mounted $2); then
/system/bin/toybox mount -t ext4 -o loop $LOOPDEVICE $2
fi
fi
if (is_mounted $2); then
ui_print "- Mounting $1 to $2"
break;
fi
fi
done
fi
}
set_perm() {
chown $2:$3 $1 || exit 1
chmod $4 $1 || exit 1
if [ "$5" ]; then
chcon $5 $1 2>/dev/null
else
chcon 'u:object_r:system_file:s0' $1 2>/dev/null
fi
}
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 2>/dev/null | while read file; do
set_perm $file $2 $3 $5 $6
done
}
mktouch() {
mkdir -p ${1%/*}
if [ -z "$2" ]; then
touch $1
else
echo $2 > $1
fi
chmod 644 $1
}
payload_size_check() {
reqSizeM=0;
for entry in $(unzip -l "$@" 2>/dev/null | tail -n +4 | awk '{ print $1 }'); do
test $entry != "--------" && reqSizeM=$((reqSizeM + entry)) || break;
done;
test $reqSizeM -lt 1048576 && reqSizeM=1 || reqSizeM=$((reqSizeM / 1048576));
}
target_size_check() {
e2fsck -p -f $1
curBlocks=`e2fsck -n $1 2>/dev/null | cut -d, -f3 | cut -d\ -f2`;
curUsedM=$((`echo "$curBlocks" | cut -d/ -f1` * 4 / 1024));
curSizeM=$((`echo "$curBlocks" | cut -d/ -f2` * 4 / 1024));
curFreeM=$((curSizeM - curUsedM));
}
##########################################################################################
# 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=$FD
break
fi
fi
done
fi
if [ -z "$BOOTMODE" ]; then
BOOTMODE=false
fi
if ($BOOTMODE) && (! is_mounted /magisk); then
ui_print "! Magisk is not activated!... abort"
exit 1
fi
# Fix SuperSU.....
($BOOTMODE) && /data/magisk/sepolicy-inject -s fsck --live
TMPDIR=/tmp
MOUNTPATH=/magisk
IMGNAME=magisk.img
if ($BOOTMODE); then
TMPDIR=/dev/tmp
MOUNTPATH=/dev/magisk_merge
IMGNAME=magisk_merge.img
fi
mkdir -p $TMPDIR 2>/dev/null
cd $TMPDIR
unzip -o "$ZIP" config.sh
if [ ! -f "config.sh" ]; then
ui_print "! Failed: Unable to extract zip file!"
exit 1
fi
source config.sh
INSTALLER=$TMPDIR/$MODID
MODPATH=$MOUNTPATH/$MODID
mkdir -p $INSTALLER
cd $INSTALLER
unzip -o "$ZIP" "common/*" module.prop
##########################################################################################
# Main
##########################################################################################
# Print mod name
print_modname
# Please leave this message in your flashable zip for credits :)
ui_print "******************************"
ui_print "Powered by Magisk (@topjohnwu)"
ui_print "******************************"
ui_print "- Mounting /system(ro), /vendor(ro), /data, /cache"
mount -o ro /system 2>/dev/null
mount -o ro /vendor 2>/dev/null
mount /data 2>/dev/null
mount /cache 2>/dev/null
if [ ! -f '/system/build.prop' ]; then
ui_print "! Failed: /system could not be mounted!"
exit 1
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;
# You can get the Android API version from $API, the CPU architecture from $ARCH
# Useful if you are creating Android version / platform dependent mods
IMG=
if (is_mounted /data); then
IMG=/data/$IMGNAME
if [ ! -f "/data/magisk.img" ]; then
ui_print "! Magisk is not installed!"
ui_print "! Magisk is required for this mod!"
exit 1
fi
else
IMG=/cache/magisk.img
ui_print " "
ui_print "***********************************"
ui_print "* !! Data unavailible !! *"
ui_print "* Magisk detection is impossible *"
ui_print "* Installation will still proceed *"
ui_print "* But please make sure you have *"
ui_print "* Magisk installed!! *"
ui_print "***********************************"
ui_print " "
fi
payload_size_check "$ZIP" "*"
if [ -f "$IMG" ]; then
ui_print "- $IMG detected!"
target_size_check $IMG
if [ "$reqSizeM" -gt "$curFreeM" ]; then
SIZE=$((((reqSizeM + curUsedM) / 32 + 2) * 32))
ui_print "- Resizing $IMG to ${SIZE}M..."
resize2fs $IMG ${SIZE}M
fi
else
SIZE=$(((reqSizeM / 32 + 2) * 32));
ui_print "- Creating $IMG with size ${SIZE}M"
make_ext4fs -l ${SIZE}M -a /magisk -S $INSTALLER/common/file_contexts_image $IMG
fi
mount_image $IMG $MOUNTPATH
if (! is_mounted $MOUNTPATH); then
ui_print "! $IMG mount failed... abort"
exit 1
fi
# Create mod paths
rm -rf $MODPATH 2>/dev/null
mkdir -p $MODPATH
# Copy files
ui_print "- Copying files"
unzip -o "$ZIP" "system/*" -d $MODPATH
# Handle replace folders
for TARGET in $REPLACE; do
mktouch $MODPATH$TARGET/.replace
done
# Auto Mount
if ($AUTOMOUNT); then
mktouch $MODPATH/auto_mount
fi
# prop files
if ($PROPFILE); then
cp -af $INSTALLER/common/system.prop $MODPATH/system.prop
fi
# Module info
cp -af $INSTALLER/module.prop $MODPATH/module.prop
if ($BOOTMODE); then
# Update info for Magisk Manager
mktouch /magisk/$MODID/update
cp -af $INSTALLER/module.prop /magisk/$MODID/module.prop
fi
# post-fs-data mode scripts
if ($POSTFSDATA); then
cp -af $INSTALLER/common/post-fs-data.sh $MODPATH/post-fs-data.sh
fi
# service mode scripts
if ($LATESTARTSERVICE); then
cp -af $INSTALLER/common/service.sh $MODPATH/service.sh
fi
ui_print "- Setting permissions"
set_permissions
ui_print "- Unmounting partitions"
umount $MOUNTPATH
losetup -d $LOOPDEVICE
rmdir $MOUNTPATH
# Shrink the image if possible
target_size_check $IMG
NEWDATASIZE=$(((curUsedM / 32 + 2) * 32))
if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then
ui_print "- Shrinking $IMG to ${NEWDATASIZE}M..."
resize2fs $IMG ${NEWDATASIZE}M
fi
if (! $BOOTMODE); then
umount /system
umount /vendor 2>/dev/null
fi
ui_print "- Done"
exit 0