Magisk/scripts/util_functions.sh
2017-06-24 23:39:24 +09:00

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##########################################################################################
#
# Magisk General Utility Functions
# by topjohnwu
#
# Used in flash_script.sh and addon.d.sh
#
##########################################################################################
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
}
getvar() {
local VARNAME=$1
local VALUE=$(eval echo \$"$VARNAME");
for FILE in /dev/.magisk /data/.magisk /cache/.magisk /system/.magisk; do
if [ -z "$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 android_boot kernel boot lnx; do
BOOTIMAGE=`find /dev/block -iname "$PARTITION" | head -n 1`
[ ! -z $BOOTIMAGE ] && break
done
fi
# Recovery fallback
if [ -z "$BOOTIMAGE" ]; then
for FSTAB in /etc/*fstab*; do
BOOTIMAGE=`grep -E '\b/boot\b' $FSTAB | grep -oE '/dev/[a-zA-Z0-9_./-]*'`
[ ! -z $BOOTIMAGE ] && break
done
fi
[ -L "$BOOTIMAGE" ] && BOOTIMAGE=`readlink $BOOTIMAGE`
}
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
}
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
}
recovery_actions() {
# TWRP bug fix
mount -o bind /dev/urandom /dev/random
# Clear out possible lib paths, let the binaries find them itself
export LD_LIBRARY_PATH=
# Temporarily block out all custom recovery binaries/libs
mv /sbin /sbin_tmp
}
abort() {
ui_print "$1"
mv /sbin_tmp /sbin 2>/dev/null
exit 1
}