mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-23 16:37:38 +00:00
231 lines
6.5 KiB
Bash
231 lines
6.5 KiB
Bash
##########################################################################################
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#
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# Magisk General Utility Functions
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# by topjohnwu
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#
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# Used in flash_script.sh, addon.d.sh, magisk module installers, and uninstaller
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#
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##########################################################################################
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MAGISK_VERSION_STUB
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SCRIPT_VERSION=$MAGISK_VER_CODE
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get_outfd() {
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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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}
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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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grep_prop() {
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REGEX="s/^$1=//p"
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shift
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FILES=$@
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[ -z "$FILES" ] && FILES='/system/build.prop'
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sed -n "$REGEX" $FILES 2>/dev/null | head -n 1
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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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[ ! -z $VALUE ] && return
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for DIR in /dev /data /cache /system; do
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VALUE=`grep_prop $VARNAME $DIR/.magisk`
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[ ! -z $VALUE ] && break;
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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 BLOCK in boot_a kern-a android_boot kernel boot lnx; do
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BOOTIMAGE=`find /dev/block -iname $BLOCK | head -n 1` 2>/dev/null
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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 -v '#' $FSTAB | grep -E '\b/boot\b' | 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 $BOOTIMAGE`
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}
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migrate_boot_backup() {
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# Update the broken boot backup
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if [ -f /data/stock_boot_.img.gz ]; then
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./magiskboot --decompress /data/stock_boot_.img.gz
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mv /data/stock_boot_.img /data/stock_boot.img
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fi
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# Update our previous backup to new format if exists
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if [ -f /data/stock_boot.img ]; then
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ui_print "- Migrating boot image backup"
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SHA1=`./magiskboot --sha1 /data/stock_boot.img 2>/dev/null`
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STOCKDUMP=/data/stock_boot_${SHA1}.img
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mv /data/stock_boot.img $STOCKDUMP
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./magiskboot --compress $STOCKDUMP
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fi
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}
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sign_chromeos() {
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echo > empty
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./chromeos/futility vbutil_kernel --pack new-boot.img.signed \
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--keyblock ./chromeos/kernel.keyblock --signprivate ./chromeos/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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}
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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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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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api_level_arch_detect() {
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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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}
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boot_actions() {
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if [ ! -d /dev/magisk/mirror/bin ]; then
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mkdir -p /dev/magisk/mirror/bin
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mount -o bind $MAGISKBIN /dev/magisk/mirror/bin
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fi
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MAGISKBIN=/dev/magisk/mirror/bin
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}
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recovery_actions() {
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# TWRP bug fix
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mount -o bind /dev/urandom /dev/random
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# Preserve environment varibles
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OLD_PATH=$PATH
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OLD_LD_PATH=$LD_LIBRARY_PATH
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if [ ! -d $TMPDIR/bin ]; then
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# Add busybox to PATH
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mkdir -p $TMPDIR/bin
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ln -s $MAGISKBIN/busybox $TMPDIR/bin/busybox
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$MAGISKBIN/busybox --install -s $TMPDIR/bin
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export PATH=$TMPDIR/bin:$PATH
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fi
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# Temporarily block out all custom recovery binaries/libs
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mv /sbin /sbin_tmp
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# Add all possible library paths
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$IS64BIT && export LD_LIBRARY_PATH=/system/lib64:/system/vendor/lib64 || export LD_LIBRARY_PATH=/system/lib:/system/vendor/lib
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}
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recovery_cleanup() {
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mv /sbin_tmp /sbin 2>/dev/null
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export LD_LIBRARY_PATH=$OLD_LD_PATH
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[ -z $OLD_PATH ] || export PATH=$OLD_PATH
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ui_print "- Unmounting partitions"
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umount -l /system 2>/dev/null
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umount -l /vendor 2>/dev/null
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umount -l /dev/random 2>/dev/null
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}
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abort() {
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ui_print "$1"
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$BOOTMODE || recovery_cleanup
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exit 1
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}
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set_perm() {
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chown $2:$3 $1 || exit 1
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chmod $4 $1 || exit 1
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[ -z $5 ] && chcon 'u:object_r:system_file:s0' $1 || chcon $5 $1
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}
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set_perm_recursive() {
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find $1 -type d 2>/dev/null | while read dir; do
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set_perm $dir $2 $3 $4 $6
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done
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find $1 -type f -o -type l 2>/dev/null | while read file; do
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set_perm $file $2 $3 $5 $6
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done
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}
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mktouch() {
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mkdir -p ${1%/*} 2>/dev/null
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[ -z $2 ] && touch $1 || echo $2 > $1
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chmod 644 $1
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}
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request_size_check() {
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reqSizeM=`du -s $1 | cut -f1`
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reqSizeM=$((reqSizeM / 1024 + 1))
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}
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request_zip_size_check() {
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reqSizeM=`unzip -l "$1" | tail -n 1 | awk '{ print int($1 / 1048567 + 1) }'`
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}
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image_size_check() {
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SIZE="`$MAGISKBIN/magisk --imgsize $IMG`"
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curUsedM=`echo "$SIZE" | cut -d" " -f1`
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curSizeM=`echo "$SIZE" | cut -d" " -f2`
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curFreeM=$((curSizeM - curUsedM))
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}
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