PunchTab SSO auth

punchtab.rb

require 'rubygems'
require 'hashie'
require 'httparty'
require 'json'

#require 'punchtab/auth'

BASE_API_URL = 'https://api.punchtab.com/v1'

module Punchtab
  class Auth
    include HTTParty

    base_uri BASE_API_URL
    format :json
    headers 'Referer' => 'http://www.webintellix.com'

    def self.authenticate(options = {})
      @client_id    = options[:client_id]     # required
      @access_key   = options[:access_key]    # required
      @secret_key   = options[:secret_key]    # required

      if @client_id && @access_key && @secret_key
        user_data = [
            'id'          => @client_id,
            'first_name'  => 'Rupak',
            'last_name'   => 'Ganguly',
            'email'       => 'rupakg@gmail.com'
        ]
        time_stamp = Time.now.to_i
        auth_request = Base64.encode64(JSON.dump(user_data))
        string_to_sign = "#{auth_request} #{time_stamp}"
        hmac = OpenSSL::HMAC.new(@secret_key, OpenSSL::Digest::SHA1.new)
        signature = hmac.update(string_to_sign).hexdigest

        # make the POST call
        path = '/auth/sso'
        post_data = {
            :client_id    => @client_id,
            :key          => @access_key,
            :auth_request => auth_request,
            :timestamp    => time_stamp,
            :signature    => signature
        }
        raw_response = Punchtab::Auth.post(path, :body => post_data)
        response = Hashie::Mash.new(raw_response)
        if response.status == 'connected'
          return response
        else
          if response.error
            puts "Raw Error Response: #{raw_response}"
            raise Exception.new("Authentication Failed: '#{response.error.description}', Status: '#{response.status}'")
          end
        end
      else
        raise ArgumentError.new('Client Id, Access Key and Secret Key are required to authenticate, before using PunchTab services.')
      end
    end

  end

  class Client

    def initialize(options = {})
      @client_id    = options[:client_id]     # required
      @access_key   = options[:access_key]    # required
      @secret_key   = options[:secret_key]    # required

      response = Punchtab::Auth.authenticate(options)
      puts "Successfully Authenticated: #{response}" unless response
    end

  end
end