fog--fog/lib/fog/cloudstack.rb

require 'fog/core'
require 'uri'

module Fog
  module Cloudstack

    extend Fog::Provider

    service(:compute, 'cloudstack/compute','Compute')

    @@digest  = OpenSSL::Digest::Digest.new('sha1')

    def self.escape(string)
      string = CGI::escape(string)
      string = string.gsub("+","%20")
      string
    end

    def self.signed_params(key,params)
      query = params.to_a.sort.collect{|c| "#{c[0]}=#{escape(c[1].to_s)}"}.join('&').downcase

      signed_string = Base64.encode64(OpenSSL::HMAC.digest(@@digest,key,query)).strip

      signed_string
    end
  end
end