Class: AadhaarAuth::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/aadhaar_auth/client.rb

Defined Under Namespace

Classes: ResponseError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(person_data) ⇒ Client

Returns a new instance of Client.



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# File 'lib/aadhaar_auth/client.rb', line 11

def initialize(person_data)
  @aadhaar_no = person_data[:aadhaar_no].to_s
  @name = person_data[:name]
  @email = person_data[:email]
  @phone = person_data[:phone]
  @gender = person_data[:gender]
  @time = Time.now
  @encrypter = Encrypter.new
  @digital_signer = DigitalSigner.new
  @raw_response = nil
end

Instance Attribute Details

#aadhaar_no ⇒ Object (readonly)

Returns the value of attribute aadhaar_no.



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# File 'lib/aadhaar_auth/client.rb', line 8

def aadhaar_no
  @aadhaar_no
end

#digital_signer ⇒ Object (readonly)

Returns the value of attribute digital_signer.



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# File 'lib/aadhaar_auth/client.rb', line 8

def digital_signer
  @digital_signer
end

#email ⇒ Object (readonly)

Returns the value of attribute email.



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# File 'lib/aadhaar_auth/client.rb', line 8

def email
  @email
end

#encrypter ⇒ Object (readonly)

Returns the value of attribute encrypter.



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# File 'lib/aadhaar_auth/client.rb', line 8

def encrypter
  @encrypter
end

#error_code ⇒ Object (readonly)

Returns the value of attribute error_code.



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# File 'lib/aadhaar_auth/client.rb', line 8

def error_code
  @error_code
end

#gender ⇒ Object (readonly)

Returns the value of attribute gender.



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# File 'lib/aadhaar_auth/client.rb', line 8

def gender
  @gender
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/aadhaar_auth/client.rb', line 8

def name
  @name
end

#phone ⇒ Object (readonly)

Returns the value of attribute phone.



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# File 'lib/aadhaar_auth/client.rb', line 8

def phone
  @phone
end

#raw_response ⇒ Object (readonly)

Returns the value of attribute raw_response.



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# File 'lib/aadhaar_auth/client.rb', line 8

def raw_response
  @raw_response
end

#time ⇒ Object (readonly)

Returns the value of attribute time.



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# File 'lib/aadhaar_auth/client.rb', line 8

def time
  @time
end

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/aadhaar_auth/client.rb', line 7

def verbose
  @verbose
end

Instance Method Details

#encrypted_data ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 123

def encrypted_data
  @encrypted_data ||= begin
    Base64.encode64(encrypter.encrypt_using_session_key(pid_block))
  end
end

#pid_block ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 105

def pid_block
  @pid_block ||= begin
    xml = Nokogiri::XML('<?xml version="1.0" encoding="UTF-8" standalone="yes"?>')
    Nokogiri::XML::Builder.with(xml) do |x|
      x.Pid('ts' => time.strftime("%Y-%m-%dT%H:%M:%S"), 'xmlns:ns2' => 'http://www.uidai.gov.in/authentication/uid-auth-request-data/1.0') do
        x.parent.namespace = x.parent.namespace_definitions.find{|ns| ns.prefix == "ns2"}
        x.Demo do
          info = {'ms' => "E", 'mv' => "100", 'name' => name}
          info.merge!('gender' => gender) if gender
          info.merge!('phone' => phone) if phone
          info.merge!('email' => email) if email
          x.Pi(info)
        end
      end
    end.to_xml
  end
end

#raw_request ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 55

def raw_request
  @raw_request ||= digital_signer.sign(req_xml)
end

#req_xml ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 59

def req_xml
  nok = Nokogiri::XML::Builder.new(:encoding => 'UTF-8') do |x|
    x.Auth(
            'uid' => aadhaar_no,
            'ac' => Config.ac,
            'lk' => Config.lk,
            'sa'=> Config.sa,
            'tid'=> Config.tid,
            'txn'=>"AuthDemoClient:public:#{time.to_i}",
            'ver'=> Config.api_version,
            'xmlns:ds'=>"http://www.w3.org/2000/09/xmldsig#",
            'xmlns'=>"http://www.uidai.gov.in/authentication/uid-auth-request/1.0") do
      x.Uses('bio'=>'n', 'otp'=>"n", 'pa'=>"n", 'pfa'=>"n", 'pi'=>"y", 'pin'=>"n")
      x.Meta('fdc'=>"NA", 'idc'=>"NA", 'lot'=>"P", 'lov' => "560094", 'pip' => "NA", 'udc'=> Config.udc)
      x.Skey('ci'=> skey_ci) do
        x.text(encrypter.encrypted_session_key)
      end
      x.Data('type' => "X") do
        x.text(encrypted_data)
      end
      x.Hmac(encrypter.calculate_hmac(pid_block))
      x['ds'].Signature do
        x['ds'].SignedInfo do
          x['ds'].CanonicalizationMethod('Algorithm' => "http://www.w3.org/2001/10/xml-exc-c14n#")
          x['ds'].SignatureMethod('Algorithm' => "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256")
          x['ds'].Reference('URI' => "") do
            x['ds'].Transforms do
              x['ds'].Transform('Algorithm'=>"http://www.w3.org/2000/09/xmldsig#enveloped-signature")
            end
            x['ds'].DigestMethod('Algorithm'=>"http://www.w3.org/2001/04/xmlenc#sha256")
            x['ds'].DigestValue('')
          end
        end
        x['ds'].SignatureValue('')
        x['ds'].KeyInfo do
          x['ds'].X509Data do
            x['ds'].X509SubjectName(DigitalSigner.private_key_cert.subject.to_s)
            x['ds'].X509Certificate(DigitalSigner.private_key_cert_val)
          end
        end
      end
    end
  end
  nok.to_xml
end

#skey_ci ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 129

def skey_ci
  encrypter.public_cert.not_after.strftime('%Y%m%d')
end

#url ⇒ Object 



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# File 'lib/aadhaar_auth/client.rb', line 51

def url
  @url ||= url = "http://auth.uidai.gov.in/#{Config.api_version}/public/#{aadhaar_no[0]}/#{aadhaar_no[1]}/#{Config.asa_licence_key}"
end

#valid? ⇒ Boolean

Returns:

  • (Boolean)

Raises:



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# File 'lib/aadhaar_auth/client.rb', line 23

def valid?
  # should be exactly 12 digits
  if aadhaar_no !~ /^\d{12}$/
    return(false)
  end

  @raw_response = Curl::Easy.http_post(url, raw_request).body_str

  if verbose
    puts "URL: \n#{url}"
    puts "PID XML: \n#{pid_block()}"
    puts "Signed request: \n#{raw_request}"
    puts "Response: \n#{@raw_response}"
  end

  digital_signer.verify_signature(@raw_response) if Config.verify_response_signature

  auth_res = Nokogiri::XML(@raw_response).children.find{|c| c.name == 'AuthRes'}
  @error_code = auth_res.attributes['err'] ? auth_res.attributes['err'].value : nil

  ret = auth_res.attributes['ret'] ? auth_res.attributes['ret'].value : nil
  if ret && ret != ''
    return ret == 'y'
  end

  raise ResponseError.new(["Error :#{@error_code}", pid_block, raw_request, @raw_response].join("\n\n"))
end