Class: ProctorCam::Proctorserv::HashedAuthenticator

Inherits:
Object
  • Object
show all
Defined in:
lib/proctorserv_api/hashed_authenticator.rb

Class Method Summary collapse

Class Method Details

.apply_reverse_guid_and_sign(params, customer_identifier, shared_secret) ⇒ Object 



29
30
31
32
33
34
35
 
# File 'lib/proctorserv_api/hashed_authenticator.rb', line 29

def self.apply_reverse_guid_and_sign(params, customer_identifier, shared_secret)
  params[:guid] = SecureRandom.hex(32)
  params[:customer_id] = customer_identifier
  query_string = create_complex_query_string(params, shared_secret) 
  params[:guid].reverse!
  params[:signature] = Digest::SHA256.hexdigest query_string
end

.create_complex_query_string(params, shared_secret) ⇒ Object

creates a query string to handle complex data types (arrays and hashes) each data type is encoded differently depending on its class if no complex data type is detected then a standard query string is created



41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/proctorserv_api/hashed_authenticator.rb', line 41

def self.create_complex_query_string(params, shared_secret)
  query_string = []

  params.each do |key,value|

    # one dimensional array
    # example: params = { ids => [1,2,3,] }
    # result: "ids[]=1&ids[]=2&ids[]=3"
    #  
    if value.class == Array
      query_string << value.map {|v| "#{key}[]=#{v}"}

    # one dimensional hash
    # example: params = { :name => {:first_name => "Joe", :last_name => "Smith"}  }
    # result: "name[first_name]=Joe&name[last_name]=Smith"
    #
    elsif value.class == Hash
      query_string << value.map {|k,v| "#{key}[#{k}]=#{v}"}

    # simple data types (eg booleans, string, int etc..)
    # example: params = { :session_duration => 60, :num_slots => 10, :exam_code => "exam_1" }
    # result: "session_duration=60&num_slots=10&exam_code=exam_1"
    #
    else
      query_string << ["#{key}=#{value}"]  
    end
    
  end
  query_string.join('&') + shared_secret
end