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<?php |
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namespace PragmaRX\Google2FA\Support; |
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use BaconQrCode\Renderer\Image\Png; |
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use BaconQrCode\Writer as BaconQrCodeWriter; |
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use PragmaRX\Google2FA\Exceptions\InsecureCallException; |
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trait QRCode |
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{ |
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/** |
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* Sending your secret key to Google API is a security issue. Developer must explicitly allow it. |
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*/ |
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protected $allowInsecureCallToGoogleApis = false; |
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/** |
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* Creates a Google QR code url. |
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* |
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* @param string $company |
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* @param string $holder |
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* @param string $secret |
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* @param int $size |
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* |
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* @throws InsecureCallException |
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* |
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* @return string |
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*/ |
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public function getQRCodeGoogleUrl($company, $holder, $secret, $size = 200) |
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{ |
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if (!$this->allowInsecureCallToGoogleApis) { |
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throw new InsecureCallException('It\'s not secure to send secret keys to Google Apis, you have to explicitly allow it by calling $google2fa->setAllowInsecureCallToGoogleApis(true).'); |
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} |
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$url = $this->getQRCodeUrl($company, $holder, $secret); |
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return Url::generateGoogleQRCodeUrl('https://chart.googleapis.com/', 'chart', 'chs='.$size.'x'.$size.'&chld=M|0&cht=qr&chl=', $url); |
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} |
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/** |
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* Generates a QR code data url to display inline. |
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* |
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* @param string $company |
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* @param string $holder |
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* @param string $secret |
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* @param int $size |
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* @param string $encoding Default to UTF-8 |
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* |
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* @return string |
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*/ |
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public function getQRCodeInline($company, $holder, $secret, $size = 200, $encoding = 'utf-8') |
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{ |
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$url = $this->getQRCodeUrl($company, $holder, $secret); |
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$renderer = new Png(); |
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$renderer->setWidth($size); |
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$renderer->setHeight($size); |
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$bacon = new BaconQrCodeWriter($renderer); |
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$data = $bacon->writeString($url, $encoding); |
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return 'data:image/png;base64,'.base64_encode($data); |
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} |
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/** |
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* Creates a QR code url. |
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* |
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* @param $company |
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* @param $holder |
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* @param $secret |
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* |
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* @return string |
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*/ |
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public function getQRCodeUrl($company, $holder, $secret) |
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{ |
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return 'otpauth://totp/'.rawurlencode($company).':'.rawurlencode($holder).'?secret='.$secret.'&issuer='.rawurlencode($company).''; |
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} |
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/** |
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* AllowInsecureCallToGoogleApis setter. |
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* |
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* @param mixed $allowInsecureCallToGoogleApis |
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* |
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* @return QRCode |
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*/ |
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public function setAllowInsecureCallToGoogleApis($allowInsecureCallToGoogleApis) |
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{ |
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$this->allowInsecureCallToGoogleApis = $allowInsecureCallToGoogleApis; |
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return $this; |
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} |
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} |
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antonioribeiro /
google2fa
