scripts: refactor and major addon.d fixes

- remove redundant addon.d.sh script bits that were covered elsewhere ($TMPDIR in util_functions.sh, find_dtbo_image in patch_dtbo_image)
- refactor addon.d.sh and flash_script.sh for simplicity and readability, and put common flashing script in util_functions.sh (as patch_boot_image), which should greatly help avoid them getting out of sync going forward and fixes compressing ramdisk support and post-patch cleanup for addon.d
- add check_data to addon.d.sh since moving stock_boot* and stock_dtbo* backups depend on it and so weren't occuring with addon.d
- fix find_manager_apk with working fallback for recovery addon.d execution (where `magisk --sqlite` will not work for hidden Manager), Manager DynAPK hiding, and print a useful log warning if an APK can't be found

scripts/addon.d.sh

@@ -20,9 +20,6 @@ else
 fi
 
 initialize() {
-  # This path should work in any cases
-  TMPDIR=/dev/tmp
-
   mount /data 2>/dev/null
 
   MAGISKBIN=/data/adb/magisk
@@ -43,71 +40,43 @@ initialize() {
   fi
 }
 
-show_logo() {
-  ui_print "************************"
-  ui_print "* Magisk v$MAGISK_VER addon.d"
-  ui_print "************************"
-}
-
-installation() {
-  find_manager_apk
-  get_flags
-  find_boot_image
-  find_dtbo_image
-  [ -z $BOOTIMAGE ] && abort "! Unable to detect target image"
-  ui_print "- Target image: $BOOTIMAGE"
-  [ -z $DTBOIMAGE ] || ui_print "- DTBO image: $DTBOIMAGE"
-
-  remove_system_su
-
-  [ -f $APK ] && eval $BOOTSIGNER -verify < $BOOTIMAGE && BOOTSIGNED=true
-  $BOOTSIGNED && ui_print "- Boot image is signed with AVB 1.0"
-
-  SOURCEDMODE=true
-  cd $MAGISKBIN
-
-  # Source the boot patcher
-  . ./boot_patch.sh "$BOOTIMAGE"
-
-  ui_print "- Flashing new boot image"
-  flash_image new-boot.img "$BOOTIMAGE" || abort "! Insufficient partition size"
-  rm -f new-boot.img
-
-  if [ -f stock_boot* ]; then
-    rm -f /data/stock_boot* 2>/dev/null
-    $DATA && mv stock_boot* /data
-  fi
-
-  $KEEPVERITY || patch_dtbo_image
-
-  if [ -f stock_dtbo* ]; then
-    rm -f /data/stock_dtbo* 2>/dev/null
-    $DATA && mv stock_dtbo* /data
-  fi
-
-  cd /
-}
-
-finalize() {
-  ui_print "- Done"
-  exit 0
-}
-
 main() {
   if ! $backuptool_ab; then
     # Wait for post addon.d-v1 processes to finish
     sleep 5
   fi
+
   $BOOTMODE || recovery_actions
-  show_logo
+
+  ui_print "************************"
+  ui_print "* Magisk v$MAGISK_VER addon.d"
+  ui_print "************************"
+
   mount_partitions
+  check_data
+  get_flags
+
   if $backuptool_ab; then
     # Swap the slot for addon.d-v2
     if [ ! -z $SLOT ]; then [ $SLOT = _a ] && SLOT=_b || SLOT=_a; fi
   fi
-  installation
+
+  find_boot_image
+
+  [ -z $BOOTIMAGE ] && abort "! Unable to detect target image"
+  ui_print "- Target image: $BOOTIMAGE"
+
+  remove_system_su
+  find_manager_apk
+  patch_boot_image
+
+  cd /
+  # Cleanups
   $BOOTMODE || recovery_cleanup
-  finalize
+  rm -rf $TMPDIR
+
+  ui_print "- Done"
+  exit 0
 }
 
 case "$1" in