A simple ruby gem to set the right CORS configuration for an S3 bucket.

$ gem install corset

Create a .env file with:

• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY
• FOG_DIRECTORY (the S3 bucket name)
• AWS_CORS_ALLOWED_ORIGIN (the allowed origin)

Note that you can't use * as the allowed origin if you plan on distributing the bucket via Cloudfront. Currently Cloudfront caches the origin of the first request.

Then run:

$ export $(cat .env) && corset set