web-base/core/Api/VerifyCaptcha.class.php
2022-06-20 19:52:31 +02:00

62 lines
1.8 KiB
PHP

<?php
namespace Api;
use Api\Parameter\StringType;
use Objects\Context;
class VerifyCaptcha extends Request {
public function __construct(Context $context, bool $externalCall = false) {
parent::__construct($context, $externalCall, array(
"captcha" => new StringType("captcha"),
"action" => new StringType("action"),
));
$this->isPublic = false;
}
public function _execute(): bool {
$settings = $this->context->getSettings();
if (!$settings->isRecaptchaEnabled()) {
return $this->createError("Google reCaptcha is not enabled.");
}
$url = "https://www.google.com/recaptcha/api/siteverify";
$secret = $settings->getRecaptchaSecretKey();
$captcha = $this->getParam("captcha");
$action = $this->getParam("action");
$params = array(
"secret" => $secret,
"response" => $captcha
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = @json_decode(curl_exec($ch), true);
curl_close($ch);
$this->success = false;
$this->lastError = "Could not verify captcha: No response from google received.";
if ($response) {
$this->success = $response["success"];
if (!$this->success) {
$this->lastError = "Could not verify captcha: " . implode(";", $response["error-codes"]);
} else {
$score = $response["score"];
if ($action !== $response["action"]) {
$this->createError("Could not verify captcha: Action does not match");
} else if ($score < 0.7) {
$this->createError("Could not verify captcha: Google ReCaptcha Score < 0.7 (Your score: $score), you are likely a bot");
}
}
}
return $this->success;
}
}