mirror of
https://github.com/Bubka/2FAuth.git
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67 lines
1.6 KiB
PHP
67 lines
1.6 KiB
PHP
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<?php
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namespace App\Classes;
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use OTPHP\TOTP;
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use OTPHP\Factory;
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use Assert\AssertionFailedException;
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class OTP
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{
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/**
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* Generate a TOTP
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*
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* @param \App\TwoFAccount $twofaccount
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* @return an array that represent the totp code
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*/
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public static function get($uri)
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{
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try {
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$otp = Factory::loadFromProvisioningUri($uri);
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}
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catch (AssertionFailedException $exception) {
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return false;
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}
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if( get_class($otp) === 'OTPHP\TOTP' ) {
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$currentPosition = time();
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$PeriodCount = floor($currentPosition / $otp->getPeriod()); //nombre de période de x s depuis T0 (x=30 par défaut)
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$currentPeriodStartAt = $PeriodCount * $otp->getPeriod();
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$positionInCurrentPeriod = $currentPosition - $currentPeriodStartAt;
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// For memo :
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// $nextOtpAt = ($PeriodCount+1)*$period
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// $remainingTime = $nextOtpAt - time()
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return $totp = [
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'otp' => $otp->now(),
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'position' => $positionInCurrentPeriod
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];
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}
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else {
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// It's a HOTP
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$hotp = [
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'otp' => $otp->at($otp->getCounter()),
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'counter' => $otp->getCounter(),
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];
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// now we update the counter for next code
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$otp->setParameter( 'counter', $otp->getcounter() + 1 );
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$twofaccount = \App\TwoFAccount::where('uri', $uri)->first();
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$twofaccount->uri = $otp->getProvisioningUri();
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$twofaccount->save();
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return $hotp;
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}
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}
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}
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