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Contents
# frozen_string_literal: true
require_relative 'base_generator'
module Uploadcare
module SignedUrlGenerators
class AmakaiGenerator < Uploadcare::SignedUrlGenerators::BaseGenerator
UUID_REGEX = '[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[89aAbB][a-f0-9]{3}-[a-f0-9]{12}'
TEMPLATE = 'https://{cdn_host}/{uuid}/?token=exp={expiration}{delimiter}acl={acl}{delimiter}hmac={token}'
def generate_url(uuid, acl = uuid)
raise ArgumentError, 'Must contain valid UUID' unless valid?(uuid)
expire = build_expire
signature = build_signature(expire, acl)
TEMPLATE.gsub('{delimiter}', delimiter)
.sub('{cdn_host}', sanitized_string(cdn_host))
.sub('{uuid}', sanitized_string(uuid))
.sub('{acl}', "/#{sanitized_string(acl)}/")
.sub('{expiration}', expire)
.sub('{token}', signature)
end
private
def valid?(uuid)
uuid.match(UUID_REGEX)
end
def delimiter
'~'
end
def build_expire
(Time.now.to_i + ttl).to_s
end
def build_signature(expire, acl)
signature = ["exp=#{expire}", "acl=/#{sanitized_string(acl)}/"].join(delimiter)
OpenSSL::HMAC.hexdigest(algorithm, secret_key, signature)
end
# rubocop:disable Style/SlicingWithRange
def sanitized_string(string)
string = string[1..-1] if string[0] == '/'
string = string[0...-1] if string[-1] == '/'
string.strip
end
# rubocop:enable Style/SlicingWithRange
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems