Question

我正在尝试将Recaptcha与我的一个表单集成。我以某种方式设法将recaptcha放在表单上并使用Curl提交它（在此帖子的帮助下：What is blocking fsockopen?）。但重新接受似乎并不接受正确的答案。

我对PHP并不擅长，但是在调试代码时（使用echo的offcourse）发现响应是空的。我已经花了两天时间，但仍无济于事。

在包含Curl后，我是否需要在recaptcha_check_answer中进行任何更改？

注意：我使用的是WAMPServer 2.2（Apache：2.2.21，PHP：5.3.10）

以下是我的表单代码和提交代码的摘录。

/**  Recaptcha display Code**/
require_once('recaptchalib.php');
$publickey = "6LeamtESAAAAAH-77WMLP5NqvCQR8g3ZMJ7kZJvV"; // you got this from recaptcha.org

$out = '<div><label for="captcha'.$form_id.'">* '.$field_object->field_label.'</label></div>';
$out .= recaptcha_get_html($publickey);
return $out;


/** Form Submit Code **/
require_once('recaptchalib.php');
$privatekey = "6LeamtESAAAAAFM1d1Zd2XRDlTjxZRH8OaTowg7n";

$resp = recaptcha_check_answer($privatekey,
        $_SERVER["REMOTE_ADDR"],
        $_POST["recaptcha_challenge_field"],
            $_POST["recaptcha_response_field"]);

if (!$resp->is_valid) {
    if (empty($resp->error))
        $this->setFormError('captcha', __('You copied the number from the captcha field incorrectly.', 'custom-contact-forms'));
    else $this->setFormError('captcha', $resp->error);
}

这是修改后的重新访问代码

<?php

define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

function _recaptcha_qsencode ($data) {
        $req = "";
        foreach ( $data as $key => $value )
                $req .= $key . '=' . urlencode( stripslashes($value) ) . '&';

        // Cut the last '&'
        $req=substr($req,0,strlen($req)-1);
        return $req;
}

function _recaptcha_http_post($host, $path, $data, $port = 80) {

        $req = _recaptcha_qsencode ($data);
        $request = curl_init("http://".$host.$path);

        curl_setopt($request, CURLOPT_USERAGENT, "reCAPTCHA/PHP");
        curl_setopt($request, CURLOPT_POST, true);
        curl_setopt($request, CURLOPT_POSTFIELDS, $req);
        curl_setopt($request, CURLOPT_RETURNTRANSFER, true);

        $response = curl_exec($request);
        return $response;
}

function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
{
    if ($pubkey == null || $pubkey == '') {
        die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
    }

    if ($use_ssl) {
                $server = RECAPTCHA_API_SECURE_SERVER;
        } else {
                $server = RECAPTCHA_API_SERVER;
        }

        $errorpart = "";
        if ($error) {
           $errorpart = "&amp;error=" . $error;
        }
        return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>

    <noscript>
        <iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
        <textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
        <input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
    </noscript>';
}

class ReCaptchaResponse {
        var $is_valid;
        var $error;
}

function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
{
    if ($privkey == null || $privkey == '') {
        die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
    }
    if ($remoteip == null || $remoteip == '') {
        die ("For security reasons, you must pass the remote ip to reCAPTCHA");
    }

        //discard spam submissions
        if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
                $recaptcha_response = new ReCaptchaResponse();
                $recaptcha_response->is_valid = false;
                $recaptcha_response->error = 'incorrect-captcha-sol';
                return $recaptcha_response;
        }

        $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/verify",
                                          array (
                                                 'privatekey' => $privkey,
                                                 'remoteip' => $remoteip,
                                                 'challenge' => $challenge,
                                                 'response' => $response
                                                 ) + $extra_params
                                          );

        $answers = explode ("\n", $response [1]);
        $recaptcha_response = new ReCaptchaResponse();

        if (trim ($answers [0]) == 'true') {
                $recaptcha_response->is_valid = true;
        }
        else {
                $recaptcha_response->is_valid = false;
                $recaptcha_response->error = $answers [1];
        }
        return $recaptcha_response;
}

function recaptcha_get_signup_url ($domain = null, $appname = null) {
    return "https://www.google.com/recaptcha/admin/create?" .  _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
}

function _recaptcha_aes_pad($val) {
    $block_size = 16;
    $numpad = $block_size - (strlen ($val) % $block_size);
    return str_pad($val, strlen ($val) + $numpad, chr($numpad));
}

/* Mailhide related code */

function _recaptcha_aes_encrypt($val,$ky) {
    if (! function_exists ("mcrypt_encrypt")) {
        die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
    }
    $mode=MCRYPT_MODE_CBC;   
    $enc=MCRYPT_RIJNDAEL_128;
    $val=_recaptcha_aes_pad($val);
    return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
}


function _recaptcha_mailhide_urlbase64 ($x) {
    return strtr(base64_encode ($x), '+/', '-_');
}

/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
function recaptcha_mailhide_url($pubkey, $privkey, $email) {
    if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
        die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
             "you can do so at <a href='http://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
    }


    $ky = pack('H*', $privkey);
    $cryptmail = _recaptcha_aes_encrypt ($email, $ky);

    return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
}

function _recaptcha_mailhide_email_parts ($email) {
    $arr = preg_split("/@/", $email );

    if (strlen ($arr[0]) <= 4) {
        $arr[0] = substr ($arr[0], 0, 1);
    } else if (strlen ($arr[0]) <= 6) {
        $arr[0] = substr ($arr[0], 0, 3);
    } else {
        $arr[0] = substr ($arr[0], 0, 4);
    }
    return $arr;
}

function recaptcha_mailhide_html($pubkey, $privkey, $email) {
    $emailparts = _recaptcha_mailhide_email_parts ($email);
    $url = recaptcha_mailhide_url ($pubkey, $privkey, $email);

    return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
        "' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);

}

?>

Answer 1

在开发模式下运行时，我在所有网站中也遇到了这些问题。没关系，如果与虚拟主机（即：mydomain.local）一起运行，或只是＆＃34;飞机＆＃34; localhost（localhost / mydomain）。一旦我在真正的生产服务器上切换到生产，recaptcha就像魅力一样。

所以我猜它必须与Apache有关。最明智的代码是通过php发出的http请求，但是我已经检查过fsockopen是否正常工作。没有显示警告或错误，神秘的事情是$ response总是空的。

我已经在我的域名formacion online尝试了，这是一个VPS，它似乎运行正常。 phpinfo（）显示的大多数值中的相同设置。

对于有效答案，Recaptcha响应为null

1 个答案: