Module: CASino::TwoFactorAuthenticatorsHelper

Included in:
TwoFactorAuthenticatorsController
Defined in:
app/helpers/casino/two_factor_authenticators_helper.rb

Instance Method Summary collapse

Instance Method Details

#otp_auth_url(two_factor_authenticator) ⇒ Object 



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# File 'app/helpers/casino/two_factor_authenticators_helper.rb', line 5

def otp_auth_url(two_factor_authenticator)
  "otpauth://totp/#{u CASino.config.frontend[:sso_name] + ': ' + two_factor_authenticator.user.username}?secret=#{two_factor_authenticator.secret}&issuer=#{u CASino.config.frontend[:sso_name]}"
end

#otp_qr_code_data_url(two_factor_authenticator) ⇒ Object 



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# File 'app/helpers/casino/two_factor_authenticators_helper.rb', line 9

def otp_qr_code_data_url(two_factor_authenticator)
  auth_url = otp_auth_url(two_factor_authenticator)
  size = otp_qr_code_suggested_size(auth_url)
  qr = RQRCode::QRCode.new(auth_url, size: size, level: :l)
  qr.to_img.resize(250, 250).to_data_url
end

#otp_qr_code_suggested_size(data) ⇒ Object 



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# File 'app/helpers/casino/two_factor_authenticators_helper.rb', line 16

def otp_qr_code_suggested_size(data)
  data_bits = data.length * 8
  (3..40).each do |size|
    metadata_bits = 4 + RQRCode::QRUtil.get_length_in_bits(RQRCode::QRMODE[:mode_8bit_byte], size)
    total_data_bits = metadata_bits + data_bits
    max_data_bits = RQRCode::QRCode.count_max_data_bits(RQRCode::QRRSBlock.get_rs_blocks(size, 1))
    return size if total_data_bits < max_data_bits
  end
end