Default topic / queue access policy

[codrinandronic]

Hello,
I noticed that AWS resources created automatically by JustSaying (like topics or queues) have public access. Here is an example of a default policy:

{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "aa21e7f79762474297ad3305eca9994f",
"Effect": "Allow",
"Principal": {
"AWS": ""
},
"Action": "sqs:SendMessage",
"Resource": "arn:aws:sqs:eu-west-1:123:queue-name",
"Condition": {
"ArnLike": {
"aws:SourceArn": "arn:aws:sns:eu-west-1:123:"
}
}
}

I would like JustSaying to still create resources automatically but to somehow set a more restrictive access policy (the principal to be a specific service or AWS account and add more conditions). Is there a way to do this?

Thank you.