Firebase Storage Security Rules - Property size is undefined on object

user_9244664 0
Viewed 621

I am trying to impose a limit on file upload size using the code below (request.resource.size < 5 * 1024 * 1024) and when uploading an image I get a permission denied error.

After running it in the simulator, I concluded that the requirement causing errors was the size below 5MB check. In the simulator an error is thrown (Property size is undefined on object.) and when I inspected the request.resource object, there was no size property, only contentType, name and bucket.

How can I correctly impose this 5MB limit?

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    match /profile_images/{profileImgId}/{imgId} {
      allow create, update: if request.auth.uid == profileImgId
                    && request.resource.size < 5 * 1024 * 1024
                    && request.resource.contentType.matches('(?i)image/(jpeg|jpg|png)');
      allow delete: if false;
      allow get: if request.auth.uid == profileImgId;
    }
  }
}
firebase-security firebase-storage google-cloud-storage firebase
2 Answers

This security rules in firebase storage works for me:-

5MB=5242880 bytes

service firebase.storage {
  match /b/{bucket}/o {
    match /profile {
        allow read, write: if request.resource.size < 5 * 1024 * 1024;
    }
  }
}

Success (5242879 bytes): Success

Failure (5242881 bytes): Failure

user_117831810

Just a suggestion I also used the same code as fatalcoder524 shown above for my android application. But i also wanted to catch the exception that whether it was due to size exception or really a failure due to some other reason so i took the help of Storage Exception errorcodes to identify them on client side. Here's a snippet of my code..

int errCode = ((StorageException) exception).getErrorCode();
if(errCode == ERROR_NOT_AUTHORIZED)
Toast.makeText(view.getContext(),"Size of file must be\nless than 5 MB", Toast.LENGTH_LONG).show();
user_132798800
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