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# Copyright 2011-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
require 'time'
module AWS
module Core
module Signers
class CloudFront
include Base
# @param [CredentialProviders::Provider] credentials
def initialize credentials
@credentials = credentials
end
# @return [CredentialProviders::Provider]
attr_reader :credentials
# @param [Http::Request] req
# @return [Http::Request]
def sign_request req
req.headers['x-amz-security-token'] = credentials.session_token if
credentials.session_token
req.headers['authorization'] =
"AWS #{credentials.access_key_id}:#{signature(req)}"
req
end
private
# @param [Http::Request] req
def signature req
sign(credentials.secret_access_key, string_to_sign(req), 'sha1')
end
# @param [Http::Request] req
def string_to_sign req
req.headers['date'] ||= Time.now.httpdate
end
end
end
end
end
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