Create signed urls for CloudFront with Ruby
- by wiseleyb
History:
I created a key and pem file on Amazon.
I created a private bucket
I created a public distribution and used origin id to connect to the private bucket: works
I created a private distribution and connected it the same as #3 - now I get access denied: expected
I'm having a really hard time generating a url that will work. I've been trying to follow the directions described here: http://docs.amazonwebservices.com/AmazonCloudFront/latest/DeveloperGuide/index.html?PrivateContent.html
This is what I've got so far... doesn't work though - still getting access denied:
def url_safe(s)
s.gsub('+','-').gsub('=','_').gsub('/','~').gsub(/\n/,'').gsub(' ','')
end
def policy_for_resource(resource, expires = Time.now + 1.hour)
%({"Statement":[{"Resource":"#{resource}","Condition":{"DateLessThan":{"AWS:EpochTime":#{expires.to_i}}}}]})
end
def signature_for_resource(resource, key_id, private_key_file_name, expires = Time.now + 1.hour)
policy = url_safe(policy_for_resource(resource, expires))
key = OpenSSL::PKey::RSA.new(File.readlines(private_key_file_name).join(""))
url_safe(Base64.encode64(key.sign(OpenSSL::Digest::SHA1.new, (policy))))
end
def expiring_url_for_private_resource(resource, key_id, private_key_file_name, expires = Time.now + 1.hour)
sig = signature_for_resource(resource, key_id, private_key_file_name, expires)
"#{resource}?Expires=#{expires.to_i}&Signature=#{sig}&Key-Pair-Id=#{key_id}"
end
resource = "http://d27ss180g8tp83.cloudfront.net/iwantu.jpeg"
key_id = "APKAIS6OBYQ253QOURZA"
pk_file = "doc/pk-APKAIS6OBYQ253QOURZA.pem"
puts expiring_url_for_private_resource(resource, key_id, pk_file)
Can anyone tell me what I'm doing wrong here?
