kptools: Implement VAB and checksum calculations, and add SHA1 functionality

Author: Admirepowered

app/src/main/assets/util_functions.sh

@@ -526,7 +526,7 @@ run_migrations() {
     BACKUP=$MAGISKBIN/stock_${name}.img
     [ -f $BACKUP ] || continue
     if [ $name = 'boot' ]; then
-      #LOCSHA1=$($MAGISKBIN/magiskboot sha1 $BACKUP)
+      LOCSHA1=$($MAGISKBIN/kptools sha1 $BACKUP)
       mkdir /data/magisk_backup_${LOCSHA1} 2>/dev/null
     fi
     TARGET=/data/magisk_backup_${LOCSHA1}/${name}.img

app/src/main/java/me/bmax/apatch/APatchApp.kt

@@ -68,6 +68,7 @@ class APApplication : Application(), Thread.UncaughtExceptionHandler {
         private const val MAGISKPOLICY_BIN_PATH = APATCH_BIN_FOLDER + "magiskpolicy"
         private const val BUSYBOX_BIN_PATH = APATCH_BIN_FOLDER + "busybox"
         private const val RESETPROP_BIN_PATH = APATCH_BIN_FOLDER + "resetprop"
+        private const val KPTOOLS_BIN_PATH = APATCH_BIN_FOLDER + "kptools"
         const val DEFAULT_SCONTEXT = "u:r:untrusted_app:s0"
         const val MAGISK_SCONTEXT = "u:r:magisk:s0"
 
@@ -142,6 +143,8 @@ class APApplication : Application(), Thread.UncaughtExceptionHandler {
                 "chmod +x $RESETPROP_BIN_PATH",
                 "cp -f ${nativeDir}/libbusybox.so $BUSYBOX_BIN_PATH",
                 "chmod +x $BUSYBOX_BIN_PATH",
+                "cp -f ${nativeDir}/libkptools.so $KPTOOLS_BIN_PATH",
+                "chmod +x $KPTOOLS_BIN_PATH",