How to Generate a Secure URL to Download File from s3 Using Ruby aws/s3 Gem
amazon-s3, amazon-web-services, ruby, url
Solution
What you need a called a "Tokenized Link". Fortunately, it's built into the aws-sdk gem you are using.
Here's a previous question that a solution you can use:
How to store data in S3 and allow user access in a secure way with rails API / iOS client?
However, that is a Rails solution which has the fancy Rails time helpers like `20.minutes.from_now`. You can either set the expiry date to a specific date by adding a specific number of seconds to the current time like `Time.now.to_i + (20 * 60)`, or include the ActiveSupport time helpers into your ruby script with `require 'active_support/core_ext/numeric/time'`. That will allow the `20.minutes.from_now` stuff to work.
Also, you will need to require the entire `aws-sdk` gem, not just the S3 part.
Problem
I am writing a small script to locate a specific file in a bucket on aws and create a temporarily authenticated url to send to colleagues. (Ideally, this would create a result similar to right-clicking a file in a bucket on the console and copying the link address). I have looked into paperclip, which doesn't appear to meet this criteria, however I could just not be aware of its full capabilities. I tried the following: ``` def authenticated_url(file_name, bucket) AWS::S3::S3Object.url_for(file_name, bucket, :secure => true, :expires => 20*60) end ``` Which produced this type of result: ...-1.amazonaws.com/file_path/file.zip.AWSAccessKeyId={key}Expires=1200&Signature={...} Is there a way to create a secure url more similar to the scenario described above that could simply be sent as a link? If not, any secure alternatives would be welcomed.