Update to the current Magisk installer script.

Require Magisk v20.4 for modules.
topjohnwu/Magisk@cf47214

magisk/META-INF/com/google/android/update-binary

@@ -11,7 +11,7 @@ ui_print() { echo "$1"; }
 
 require_new_magisk() {
   ui_print "*******************************"
-  ui_print " Please install Magisk v19.0+! "
+  ui_print " Please install Magisk v20.4+! "
   ui_print "*******************************"
   exit 1
 }
@@ -27,156 +27,7 @@ mount /data 2>/dev/null
 
 [ -f /data/adb/magisk/util_functions.sh ] || require_new_magisk
 . /data/adb/magisk/util_functions.sh
-[ $MAGISK_VER_CODE -lt 19000 ] && require_new_magisk
+[ $MAGISK_VER_CODE -lt 20400 ] && require_new_magisk
 
-if [ $MAGISK_VER_CODE -ge 20400 ]; then
-  # New Magisk have complete installation logic within util_functions.sh
-  install_module
-  exit 0
-fi
-
-#################
-# Legacy Support
-#################
-
-# Global vars
-TMPDIR=/dev/tmp
-PERSISTDIR=/sbin/.magisk/mirror/persist
-
-rm -rf $TMPDIR 2>/dev/null
-mkdir -p $TMPDIR
-
-is_legacy_script() {
-  unzip -l "$ZIPFILE" install.sh | grep -q install.sh
-  return $?
-}
-
-print_modname() {
-  local len
-  len=`echo -n $MODNAME | wc -c`
-  len=$((len + 2))
-  local pounds=`printf "%${len}s" | tr ' ' '*'`
-  ui_print "$pounds"
-  ui_print " $MODNAME "
-  ui_print "$pounds"
-  ui_print "*******************"
-  ui_print " Powered by Magisk "
-  ui_print "*******************"
-}
-
-# Preperation for flashable zips
-setup_flashable
-
-# Mount partitions
-mount_partitions
-
-# Detect version and architecture
-api_level_arch_detect
-
-# Setup busybox and binaries
-$BOOTMODE && boot_actions || recovery_actions
-
-##############
-# Preparation
-##############
-
-# Extract prop file
-unzip -o "$ZIPFILE" module.prop -d $TMPDIR >&2
-[ ! -f $TMPDIR/module.prop ] && abort "! Unable to extract zip file!"
-
-$BOOTMODE && MODDIRNAME=modules_update || MODDIRNAME=modules
-MODULEROOT=$NVBASE/$MODDIRNAME
-MODID=`grep_prop id $TMPDIR/module.prop`
-MODPATH=$MODULEROOT/$MODID
-MODNAME=`grep_prop name $TMPDIR/module.prop`
-
-# Create mod paths
-rm -rf $MODPATH 2>/dev/null
-mkdir -p $MODPATH
-
-##########
-# Install
-##########
-
-if is_legacy_script; then
-  unzip -oj "$ZIPFILE" module.prop install.sh uninstall.sh 'common/*' -d $TMPDIR >&2
-
-  # Load install script
-  . $TMPDIR/install.sh
-
-  # Callbacks
-  print_modname
-  on_install
-
-  # Custom uninstaller
-  [ -f $TMPDIR/uninstall.sh ] && cp -af $TMPDIR/uninstall.sh $MODPATH/uninstall.sh
-
-  # Skip mount
-  $SKIPMOUNT && touch $MODPATH/skip_mount
-
-  # prop file
-  $PROPFILE && cp -af $TMPDIR/system.prop $MODPATH/system.prop
-
-  # Module info
-  cp -af $TMPDIR/module.prop $MODPATH/module.prop
-
-  # post-fs-data scripts
-  $POSTFSDATA && cp -af $TMPDIR/post-fs-data.sh $MODPATH/post-fs-data.sh
-
-  # service scripts
-  $LATESTARTSERVICE && cp -af $TMPDIR/service.sh $MODPATH/service.sh
-
-  ui_print "- Setting permissions"
-  set_permissions
-else
-  print_modname
-
-  unzip -o "$ZIPFILE" customize.sh -d $MODPATH >&2
-
-  if ! grep -q '^SKIPUNZIP=1$' $MODPATH/customize.sh 2>/dev/null; then
-    ui_print "- Extracting module files"
-    unzip -o "$ZIPFILE" -x 'META-INF/*' -d $MODPATH >&2
-
-    # Default permissions
-    set_perm_recursive $MODPATH 0 0 0755 0644
-  fi
-
-  # Load customization script
-  [ -f $MODPATH/customize.sh ] && . $MODPATH/customize.sh
-fi
-
-# Handle replace folders
-for TARGET in $REPLACE; do
-  ui_print "- Replace target: $TARGET"
-  mktouch $MODPATH$TARGET/.replace
-done
-
-if $BOOTMODE; then
-  # Update info for Magisk Manager
-  mktouch $NVBASE/modules/$MODID/update
-  cp -af $MODPATH/module.prop $NVBASE/modules/$MODID/module.prop
-fi
-
-# Copy over custom sepolicy rules
-if [ -f $MODPATH/sepolicy.rule -a -e $PERSISTDIR ]; then
-  ui_print "- Installing custom sepolicy patch"
-  PERSISTMOD=$PERSISTDIR/magisk/$MODID
-  mkdir -p $PERSISTMOD
-  cp -af $MODPATH/sepolicy.rule $PERSISTMOD/sepolicy.rule
-fi
-
-# Remove stuffs that don't belong to modules
-rm -rf \
-$MODPATH/system/placeholder $MODPATH/customize.sh \
-$MODPATH/README.md $MODPATH/.git* 2>/dev/null
-
-##############
-# Finalizing
-##############
-
-cd /
-$BOOTMODE || recovery_cleanup
-rm -rf $TMPDIR
-
-ui_print "- Done"
+install_module
 exit 0