Shell implemented mounting app of ReVanced Manager

dismount.sh

#!/data/adb/magisk/busybox ash
# shellcheck shell=ash
# @see https://github.com/ReVanced/revanced-manager/blob/main/lib/services/root_api.dart

REVANCED_PATH="/data/adb/revanced"
SERVICE_D_PATH="/data/adb/service.d"

main () {
	local packageName="$1"

	if [ -z "$packageName" ]; then
		echo "Usage: dismount <PACKAGE NAME>" >&2
	elif ! pm path "$packageName" >&-; then
		echo "ERROR: $packageName is not installed" >&2
	else
		grep "$packageName" /proc/mounts | while read -r line; do
			echo $line | cut -d " " -f 2 | sed "s/apk.*/apk/" | xargs -r umount -l;
		done
		rm -rf "$REVANCED_PATH/$packageName" "$SERVICE_D_PATH/$packageName.sh"
	fi
}

main "$@"

mount.sh

#!/data/adb/magisk/busybox ash
# shellcheck shell=ash
# @see https://github.com/ReVanced/revanced-manager/blob/main/lib/services/root_api.dart

REVANCED_PATH="/data/adb/revanced"
SERVICE_D_PATH="/data/adb/service.d"

main () {
	local packageName="$1"
	local patchedFilePath="$2"

	if [ -z "$packageName" ] || [ -z "$patchedFilePath" ]; then
		echo "Usage: mount <PACKAGE_NAME> <PATCHED_FILE_PATH>" >&2
	elif ! pm path "$packageName" >&-; then
		echo "ERROR: $packageName is not installed" >&2
	elif [ ! -f "$patchedFilePath" ]; then
		echo "ERROR: $patchedFilePath is not found" >&2
	else
		local newPatchedFilePath="$REVANCED_PATH/$packageName/base.apk"
		mkdir -p $REVANCED_PATH/$packageName
		chmod 0755 $REVANCED_PATH/$packageName
		chown shell:shell $REVANCED_PATH/$packageName
		cp "$patchedFilePath" "$newPatchedFilePath"
		chmod 0644 "$newPatchedFilePath"
		chown system:system "$newPatchedFilePath"
		chcon u:object_r:apk_data_file:s0 "$newPatchedFilePath"
		mkdir -p $SERVICE_D_PATH
		local scriptFilePath="$SERVICE_D_PATH/$packageName.sh"
		cat > "$scriptFilePath" <<- EOF
			#!/sbin/busybox ash
			# Mount using Magisk mirror, if available.
			MAGISKTMP="\$(magisk --path)" || MAGISKTMP=/sbin
			MIRROR="\$MAGISKTMP/.magisk/mirror"
			if [ ! -f "\$MIRROR" ]; then
				MIRROR=""
			fi

			until [ "\$(getprop sys.boot_completed)" = 1 ]; do
				sleep 3;
			done
			until [ -d "/sdcard/Android" ]; do
				sleep 1;
			done

			# Unmount any existing installation to prevent multiple unnecessary mounts.
			grep "$packageName" /proc/mounts | while read -r line; do
				echo "\$line" | cut -d " " -f 2 | sed "s/apk.*/apk/" | xargs -r umount -l;
			done

			base_path=$REVANCED_PATH/$packageName/base.apk
			stock_path=\$(pm path "$packageName" | grep base | sed "s/package://g" )

			chcon u:object_r:apk_data_file:s0 "\$base_path"
			mount -o bind "\$MIRROR\$base_path" "\$stock_path"

			# Kill the app to force it to restart the mounted APK in case it is already running
			am force-stop "$packageName"
		EOF
		chmod 0744 "$scriptFilePath"
		. "$SERVICE_D_PATH/$packageName.sh"
	fi
}

main "$@"