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<?php |
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namespace SilverStripe\MFA\BasicMath; |
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use SilverStripe\Control\HTTPRequest; |
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use SilverStripe\Core\Config\Configurable; |
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use SilverStripe\MFA\Method\Handler\LoginHandlerInterface; |
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use SilverStripe\MFA\Store\StoreInterface; |
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/** |
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* Handles login attempts for the Math Method |
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*/ |
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class MethodAuthenticationHandler implements LoginHandlerInterface |
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{ |
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use Configurable; |
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private static $number_of_numbers = 2; |
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/** |
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* Prepare this authentication method to verify a member by initialising state in session and generating details to |
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* provide to a frontend React component |
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* |
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* @param StoreInterface $store An object that hold session data (and the Member) that can be mutated |
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* @return array Props to be passed to a front-end React component |
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*/ |
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public function start(StoreInterface $store) |
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{ |
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$numbers = []; |
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for ($i = 0; $i < static::config()->get('number_of_numbers'); $i++) { |
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$numbers[] = rand(1, 9); |
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} |
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$store->setState([ |
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'answer' => array_sum($numbers), |
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]); |
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return [ |
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'numbers' => $numbers, |
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]; |
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} |
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/** |
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* Verify the request has provided the right information to verify the member that aligns with any sessions state |
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* that may have been set prior |
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* |
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* @param HTTPRequest $request |
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* @param StoreInterface $store |
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* @return bool |
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*/ |
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public function verify(HTTPRequest $request, StoreInterface $store) |
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{ |
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$state = $store->getState(); |
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return hash_equals((string)$state['answer'], (string)$request->param('answer')); |
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} |
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/** |
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* Provide a string (possibly passed through i18n) that serves as a lead in for choosing this option for |
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* authentication |
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* |
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* eg. "Enter one of your recovery codes" |
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* |
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* @return string |
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*/ |
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public function getLeadInLabel() |
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{ |
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return 'Verify by solving a complex math problem'; |
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} |
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} |
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silverstripe /
silverstripe-mfa
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