Backend: support Android 12 .capex (compressed apex) files

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

@@ -57,14 +57,14 @@ mount_apex() {
   [ -e /dev/block/loop1 ] && minorx=$($BB ls -l /dev/block/loop1 | $BB awk '{ print $6 }');
   num=0;
   for apex in /system_root/system/apex/*; do
-    dest=/apex/$($BB basename $apex .apex);
-    case $dest in
-      *.current|*.release) dest=$(echo $dest | $BB rev | $BB cut -d. -f2- | $BB rev);;
-    esac;
+    dest=/apex/$($BB basename $apex | $BB sed -E -e 's;\.apex$|\.capex$;;' -e 's;\.current$|\.release$;;');
     $BB mkdir -p $dest;
     case $apex in
-      *.apex)
+      *.apex|*.capex)
+        $BB unzip -qo $apex original_apex -d /apex;
+        [ -f /apex/original_apex ] && apex=/apex/original_apex;
         $BB unzip -qo $apex apex_payload.img -d /apex;
+        $BB mv -f /apex/original_apex $dest.apex 2>/dev/null;
         $BB mv -f /apex/apex_payload.img $dest.img;
         $BB mount -t ext4 -o ro,noatime $dest.img $dest 2>/dev/null;
         if [ $? != 0 ]; then

META-INF/com/google/android/updater-script

@@ -3,4 +3,4 @@
 # Dummy file; update-binary is a shell script (DO NOT CHANGE)
 #
 #
-# AK_BASE_VERSION=20211018
+# AK_BASE_VERSION=20211118