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<?php
namespace App\Lib;
use App\Constants\Status;
use App\Models\Extension;
class Captcha {
/*
|--------------------------------------------------------------------------
| Captcha
|--------------------------------------------------------------------------
|
| This class is using verify and show captcha. Here is currently available
| custom captcha and google recaptcha2. Developer can use verify method
| to verify all captcha or can use separately if required
|
*/
/**
* Google recaptcha2 script
*
* @return string
*/
public static function reCaptcha() {
$reCaptcha = Extension::where('act', 'google-recaptcha2')->where('status', Status::ENABLE)->first();
return $reCaptcha ? $reCaptcha->generateScript() : null;
}
/**
* Custom captcha script
*
* @return string
*/
public static function customCaptcha($width = '100%', $height = 46, $bgColor = '#003') {
$textColor = '#' . gs()->base_color;
$captcha = Extension::where('act', 'custom-captcha')->where('status', Status::ENABLE)->first();
if (!$captcha) {
return 0;
}
$code = rand(100000, 999999);
$char = str_split($code);
$ret = '<link href="https://fonts.googleapis.com/css?family=Henny+Penny&display=swap" rel="stylesheet">';
$ret .= '<div style="height: ' . $height . 'px; line-height: ' . $height . 'px; width:' . $width . '; text-align: center; background-color: ' . $bgColor . '; color: ' . $textColor . '; font-size: ' . ($height - 20) . 'px; font-weight: bold; letter-spacing: 20px; font-family: \'Henny Penny\', cursive; -webkit-user-select: none; -moz-user-select: none;-ms-user-select: none;user-select: none; display: flex; justify-content: center;">';
foreach ($char as $value) {
$ret .= '<span style=" float:left; -webkit-transform: rotate(' . rand(-60, 60) . 'deg);">' . $value . '</span>';
}
$ret .= '</div>';
$captchaSecret = hash_hmac('sha256', $code, $captcha->shortcode->random_key->value);
$ret .= '<input type="hidden" name="captcha_secret" value="' . $captchaSecret . '">';
return $ret;
}
/**
* Verify all captcha
*
* @return boolean
*/
public static function verify() {
$gCaptchaPass = self::verifyGoogleCaptcha();
$cCaptchaPass = self::verifyCustomCaptcha();
if ($gCaptchaPass && $cCaptchaPass) {
return true;
}
return false;
}
/**
* Verify google recaptcha2
*
* @return boolean
*/
public static function verifyGoogleCaptcha() {
$pass = true;
$googleCaptcha = Extension::where('act', 'google-recaptcha2')->where('status', Status::ENABLE)->first();
if ($googleCaptcha) {
$resp = json_decode(file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=" . $googleCaptcha->shortcode->secret_key->value . "&response=" . request()['g-recaptcha-response'] . "&remoteip=" . getRealIP()), true);
if (!$resp['success']) {
$pass = false;
}
}
return $pass;
}
/**
* Verify custom captcha
*
* @return boolean
*/
public static function verifyCustomCaptcha() {
$pass = true;
$customCaptcha = Extension::where('act', 'custom-captcha')->where('status', Status::ENABLE)->first();
if ($customCaptcha) {
$captchaSecret = hash_hmac('sha256', request()->captcha, $customCaptcha->shortcode->random_key->value);
if ($captchaSecret != request()->captcha_secret) {
$pass = false;
}
}
return $pass;
}
}
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