221 lines
7.5 KiB
Bash
221 lines
7.5 KiB
Bash
#!/system/bin/sh
|
|
##########################################################################################
|
|
#
|
|
# Magisk Boot Image Patcher
|
|
# by topjohnwu
|
|
#
|
|
# This script should be placed in a directory with at least the following files:
|
|
#
|
|
# File name type Description
|
|
#
|
|
# boot_patch.sh script A script to patch boot. Expect path to boot image as parameter.
|
|
# (this file) The script will use binaries and files in its same directory
|
|
# to complete the patching process
|
|
# magisk binary The main binary for all Magisk operations.
|
|
# It is also used to patch the sepolicy in the ramdisk.
|
|
# magiskboot binary A tool to unpack boot image, decompress ramdisk, extract ramdisk
|
|
# and patch common patches such as forceencrypt, remove dm-verity.
|
|
# init.magisk.rc script A new line will be added to init.rc to import this script.
|
|
# All magisk entrypoints are defined here
|
|
#
|
|
# If the script is not running as root, then the input boot image should be a stock image
|
|
# or have a backup included in ramdisk internally, since we cannot access the stock boot
|
|
# image placed under /data we've created when previously installing
|
|
#
|
|
##########################################################################################
|
|
|
|
CWD=`pwd`
|
|
cd `dirname $1`
|
|
BOOTIMAGE="`pwd`/`basename $1`"
|
|
cd "$CWD"
|
|
|
|
if [ -z $BOOTIMAGE ]; then
|
|
ui_print_wrap "This script requires a boot image as a parameter"
|
|
exit 1
|
|
fi
|
|
|
|
# Presets
|
|
[ -z $KEEPVERITY ] && KEEPVERITY=false
|
|
[ -z $KEEPFORCEENCRYPT ] && KEEPFORCEENCRYPT=false
|
|
|
|
# Detect whether running as root
|
|
[ `id -u` -eq 0 ] && ROOT=true || ROOT=false
|
|
|
|
# Call ui_print_wrap if exists, or else simply use echo
|
|
# Useful when wrapped in flashable zip
|
|
ui_print_wrap() {
|
|
type ui_print >/dev/null 2>&1 && ui_print "$1" || echo "$1"
|
|
}
|
|
|
|
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
|
|
}
|
|
|
|
# --cpio-add <incpio> <mode> <entry> <infile>
|
|
cpio_add() {
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-add ramdisk.cpio $1 $2 $3
|
|
}
|
|
|
|
# --cpio-extract <incpio> <entry> <outfile>
|
|
cpio_extract() {
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-extract ramdisk.cpio $1 $2
|
|
}
|
|
|
|
# --cpio-mkdir <incpio> <mode> <entry>
|
|
cpio_mkdir() {
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-mkdir ramdisk.cpio $1 $2
|
|
}
|
|
|
|
##########################################################################################
|
|
# Prework
|
|
##########################################################################################
|
|
|
|
# Switch to the location of the script file
|
|
[ -z $SOURCEDMODE ] && cd "`dirname "${BASH_SOURCE:-$0}"`"
|
|
chmod +x ./*
|
|
|
|
# Detect ARCH
|
|
[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64 || SYSTEMLIB=/system/lib
|
|
|
|
ui_print_wrap "- Unpacking boot image"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --unpack $BOOTIMAGE
|
|
|
|
case $? in
|
|
1 )
|
|
ui_print_wrap "! Unable to unpack boot image"
|
|
exit 1
|
|
;;
|
|
2 )
|
|
ui_print_wrap "! Sony ELF32 format detected"
|
|
ui_print_wrap "! Please use BootBridge from @AdrianDC to flash Magisk"
|
|
exit 1
|
|
;;
|
|
3 )
|
|
ui_print_wrap "! Sony ELF64 format detected"
|
|
ui_print_wrap "! Stock kernel cannot be patched, please use a custom kernel"
|
|
exit 1
|
|
esac
|
|
|
|
##########################################################################################
|
|
# Ramdisk restores
|
|
##########################################################################################
|
|
|
|
# Test patch status and do restore, after this section, ramdisk.cpio.orig is guaranteed to exist
|
|
ui_print_wrap "- Checking ramdisk status"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-test ramdisk.cpio
|
|
case $? in
|
|
0 ) # Stock boot
|
|
ui_print_wrap "- Stock boot image detected!"
|
|
ui_print_wrap "- Backing up stock boot image"
|
|
SHA1=`LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --sha1 $BOOTIMAGE | tail -n 1`
|
|
STOCKDUMP=stock_boot_${SHA1}.img
|
|
dd if=$BOOTIMAGE of=$STOCKDUMP
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --compress $STOCKDUMP
|
|
cp -af ramdisk.cpio ramdisk.cpio.orig
|
|
;;
|
|
1 ) # Magisk patched
|
|
ui_print_wrap "- Magisk patched image detected!"
|
|
# Find SHA1 of stock boot image
|
|
if [ -z $SHA1 ]; then
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-extract ramdisk.cpio init.magisk.rc init.magisk.rc.old
|
|
SHA1=`grep_prop "# STOCKSHA1" init.magisk.rc.old`
|
|
rm -f init.magisk.rc.old
|
|
fi
|
|
|
|
OK=false
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-restore ramdisk.cpio
|
|
if [ $? -eq 0 ]; then
|
|
ui_print_wrap "- Ramdisk restored from internal backup"
|
|
OK=true
|
|
else
|
|
# Restore failed
|
|
ui_print_wrap "! Cannot restore from internal backup"
|
|
# If we are root and SHA1 known, we try to find the stock backup
|
|
if $ROOT && [ ! -z $SHA1 ]; then
|
|
STOCKDUMP=/data/stock_boot_${SHA1}.img
|
|
if [ -f ${STOCKDUMP}.gz ]; then
|
|
ui_print_wrap "- Stock boot image backup found"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --decompress ${STOCKDUMP}.gz stock_boot.img
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --unpack stock_boot.img
|
|
rm -f stock_boot.img
|
|
OK=true
|
|
fi
|
|
fi
|
|
fi
|
|
if ! $OK; then
|
|
ui_print_wrap "! Ramdisk restoration incomplete"
|
|
ui_print_wrap "! Will still try to continue installation"
|
|
fi
|
|
cp -af ramdisk.cpio ramdisk.cpio.orig
|
|
;;
|
|
2 ) # Other patched
|
|
ui_print_wrap "! Other patched boot detected!"
|
|
ui_print_wrap "! Please restore stock boot image"
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
##########################################################################################
|
|
# Ramdisk patches
|
|
##########################################################################################
|
|
|
|
ui_print_wrap "- Patching ramdisk"
|
|
|
|
# The common patches
|
|
$KEEPVERITY || LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-patch-dmverity ramdisk.cpio
|
|
$KEEPFORCEENCRYPT || LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-patch-forceencrypt ramdisk.cpio
|
|
|
|
# Add magisk entrypoint
|
|
cpio_extract init.rc init.rc
|
|
grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
|
|
sed -i "/selinux.reload_policy/d" init.rc
|
|
cpio_add 750 init.rc init.rc
|
|
rm -f init.rc
|
|
|
|
# sepolicy patches
|
|
cpio_extract sepolicy sepolicy
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magisk magiskpolicy --load sepolicy --save sepolicy --minimal
|
|
cpio_add 644 sepolicy sepolicy
|
|
rm -f sepolicy
|
|
|
|
# Add new items
|
|
if [ ! -z $SHA1 ]; then
|
|
cp init.magisk.rc init.magisk.rc.bak
|
|
echo "# STOCKSHA1=$SHA1" >> init.magisk.rc
|
|
fi
|
|
cpio_add 750 init.magisk.rc init.magisk.rc
|
|
[ -f init.magisk.rc.bak ] && mv init.magisk.rc.bak init.magisk.rc
|
|
cpio_add 755 sbin/magisk magisk
|
|
|
|
# Create ramdisk backups
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cpio-backup ramdisk.cpio ramdisk.cpio.orig
|
|
|
|
rm -f ramdisk.cpio.orig
|
|
|
|
##########################################################################################
|
|
# Repack and flash
|
|
##########################################################################################
|
|
|
|
# Hexpatches
|
|
|
|
# Remove Samsung RKP in stock kernel
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --hexpatch kernel \
|
|
49010054011440B93FA00F71E9000054010840B93FA00F7189000054001840B91FA00F7188010054 \
|
|
A1020054011440B93FA00F7140020054010840B93FA00F71E0010054001840B91FA00F7181010054
|
|
|
|
ui_print_wrap "- Repacking boot image"
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --repack $BOOTIMAGE
|
|
|
|
if [ $? -ne 0 ]; then
|
|
ui_print_wrap "! Unable to repack boot image!"
|
|
exit 1
|
|
fi
|
|
|
|
LD_LIBRARY_PATH=$SYSTEMLIB ./magiskboot --cleanup
|