storage.rules

rules_version = '2';
service firebase.storage {
  match /b/{bucket}/o {
    function isOwnBucket(userId) {
      return request.auth.uid != null && userId == request.auth.uid;
    }
    match /fumen/bgm/{userId}/{bgmFile} {
      allow read;
      // Only allow writing if it's mp3, and smaller than 30MB
      allow write : if isOwnBucket(userId)
                  && request.resource.contentType.matches('audio/mpeg')
                  && request.resource.size < 30 * 1024 * 1024;
    }
    match /fumen/cover/{userId}/{coverFile} {
      allow read;
      // Only allow writing if it's PNG, and smaller than 2MB
      allow write : if isOwnBucket(userId)
                  && (
                  	request.resource.contentType.matches('image/png')
                    || request.resource.contentType.matches('image/jpeg')
                  )
                  && request.resource.size < 2 * 1024 * 1024;
    }
    match /fumen/data/{userId}/{dataFile} {
      allow read;
      // Only allow writing if it's sonolus fumen, and smaller than 1MB
      allow write : if isOwnBucket(userId)
                  && request.resource.contentType.matches('application/zip')
                  && request.resource.size < 1 * 1024 * 1024;
    }
  }
}