PayPal IPN 握手问题

Posted 2023-02-22

【中文标题】PayPal IPN 握手问题

【英文标题】：PayPal IPN Handshake issues

【发布时间】：2016-04-29 13:31:12

【问题描述】：

使用 1and1 虚拟主机

错误信息

Can't connect to PayPal to validate IPN message: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

测试表格

<form action="http://dev.myurlishere.com/ipn.php" method="POST">
  <input name="mc_gross" type="hidden" value="500.00" />
  <input name="custom" type="hidden" value="some custom data" />
  <input name="address_status" type="hidden" value="confirmed" />
  <input name="item_number1" type="hidden" value="6" />
  <input name="item_number2" type="hidden" value="4" />
  <input name="payer_id" type="hidden" value="FW5W7ZUC3T4KL" />
  <input name="tax" type="hidden" value="0.00" />
  <input name="address_street" type="hidden" value="1234 Rock Road" />
  <input name="payment_date" type="hidden" value="14:55 15 Jan 07 2005 PST" />
  <input name="payment_status" type="hidden" value="Completed" />
  <input name="address_zip" type="hidden" value="12345" />
  <input name="mc_shipping" type="hidden" value="0.00" />
  <input name="mc_handling" type="hidden" value="0.00" />
  <input name="first_name" type="hidden" value="Jason" />
  <input name="last_name" type="hidden" value="Anderson" />
  <input name="mc_fee" type="hidden" value="0.02" />
  <input name="address_name" type="hidden" value="Jason Anderson" />
  <input name="notify_version" type="hidden" value="1.6" />
  <input name="payer_status" type="hidden" value="verified" />
  <input name="business" type="hidden" value="[e-mail]" />
  <input name="address_country" type="hidden" value="United States" />
  <input name="num_cart_items" type="hidden" value="2" />
  <input name="mc_handling1" type="hidden" value="0.00" />
  <input name="mc_handling2" type="hidden" value="0.00" />
  <input name="address_city" type="hidden" value="Los Angeles" />
  <input name="verify_sign" type="hidden" value="AlUbUcinRR5pIo2KwP4xjo9OxxHMAi6.s6AES.4Z6C65yv1Ob2eNqrHm" />
  <input name="mc_shipping1" type="hidden" value="0.00" />
  <input name="mc_shipping2" type="hidden" value="0.00" />
  <input name="tax1" type="hidden" value="0.00" />
  <input name="tax2" type="hidden" value="0.00" />
  <input name="txn_id" type="hidden" value="TESTER" />
  <input name="payment_type" type="hidden" value="instant" />
  <input name="last_name=Borduin" type="hidden" />
  <input name="payer_email" type="hidden" value="[e-mail]" />
  <input name="item_name1" type="hidden" value="Rubber+clog" />
  <input name="address_state" type="hidden" value="CA" />
  <input name="payment_fee" type="hidden" value="0.02" />
  <input name="item_name2" type="hidden" value="Roman sandal" />
  <input name="invoice" type="hidden" value="123456" />
  <input name="quantity" type="hidden" value="1" />
  <input name="quantity1" type="hidden" value="1" />
  <input name="receiver_id" type="hidden" value="5HRS8SCK9NSJ2" />
  <input name="quantity2" type="hidden" value="1" />
  <input name="txn_type" type="hidden" value="web_accept" />
  <input name="mc_gross_1" type="hidden" value="0.01" />
  <input name="mc_currency" type="hidden" value="USD" />
  <input name="mc_gross_2" type="hidden" value="0.01" />
  <input name="payment_gross" type="hidden" value="0.02" />
  <input name="subscr_id" type="hidden" value="PP-1234" />
  <input name="test" type="submit" value="test" />
</form>

ipn.php

<?php
// CONFIG: Enable debug mode. This means we'll log requests into 'ipn.log' in the same directory.
// Especially useful if you encounter network errors or other intermittent problems with IPN (validation).
// Set this to 0 once you go live or don't require logging.
define("DEBUG", 1);
// Set to 0 once you're ready to go live
define("USE_SANDBOX", 1);
define("LOG_FILE", "./ipn.log");
// Read POST data
// reading posted data directly from $_POST causes serialization
// issues with array data in POST. Reading raw POST data from input stream instead.
$raw_post_data = file_get_contents('php://input');
$raw_post_array = explode('&', $raw_post_data);
$myPost = array();
foreach ($raw_post_array as $keyval) 
    $keyval = explode ('=', $keyval);
    if (count($keyval) == 2)
        $myPost[$keyval[0]] = urldecode($keyval[1]);

// read the post from PayPal system and add 'cmd'
$req = 'cmd=_notify-validate';
if(function_exists('get_magic_quotes_gpc')) 
    $get_magic_quotes_exists = true;

foreach ($myPost as $key => $value) 
    if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) 
        $value = urlencode(stripslashes($value));
     else 
        $value = urlencode($value);
    
    $req .= "&$key=$value";

// Post IPN data back to PayPal to validate the IPN data is genuine
// Without this step anyone can fake IPN data
if(USE_SANDBOX == true) 
    $paypal_url = "https://www.sandbox.paypal.com/cgi-bin/webscr";
 else 
    $paypal_url = "https://www.paypal.com/cgi-bin/webscr";

$ch = curl_init($paypal_url);
if ($ch == FALSE) 
    return FALSE;

curl_setopt($ch, CURLOPT_SSLVERSION, 4);
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
if(DEBUG == true) 
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLINFO_HEADER_OUT, 1);

// CONFIG: Optional proxy configuration
//curl_setopt($ch, CURLOPT_PROXY, $proxy);
//curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, 1);
// Set TCP timeout to 30 seconds
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
// CONFIG: Please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path
// of the certificate as shown below. Ensure the file is readable by the webserver.
// This is mandatory for some environments.
//$cert = __DIR__ . "./cacert.pem";
//curl_setopt($ch, CURLOPT_CAINFO, $cert);
$res = curl_exec($ch);
if (curl_errno($ch) != 0) // cURL error
    
    if(DEBUG == true)  
        error_log(date('[Y-m-d H:i e] '). "Can't connect to PayPal to validate IPN message: " . curl_error($ch) . PHP_EOL, 3, LOG_FILE);
    
    curl_close($ch);
    exit;
 else 
        // Log the entire HTTP response if debug is switched on.
        if(DEBUG == true) 
            error_log(date('[Y-m-d H:i e] '). "HTTP request of validation request:". curl_getinfo($ch, CURLINFO_HEADER_OUT) ." for IPN payload: $req" . PHP_EOL, 3, LOG_FILE);
            error_log(date('[Y-m-d H:i e] '). "HTTP response of validation request: $res" . PHP_EOL, 3, LOG_FILE);
        
        curl_close($ch);

// Inspect IPN validation result and act accordingly
// Split response headers and payload, a better way for strcmp
$tokens = explode("\r\n\r\n", trim($res));
$res = trim(end($tokens));
if (strcmp ($res, "VERIFIED") == 0) 
    // check whether the payment_status is Completed
    // check that txn_id has not been previously processed
    // check that receiver_email is your PayPal email
    // check that payment_amount/payment_currency are correct
    // process payment and mark item as paid.
    // assign posted variables to local variables
    //$item_name = $_POST['item_name'];
    //$item_number = $_POST['item_number'];
    //$payment_status = $_POST['payment_status'];
    //$payment_amount = $_POST['mc_gross'];
    //$payment_currency = $_POST['mc_currency'];
    //$txn_id = $_POST['txn_id'];
    //$receiver_email = $_POST['receiver_email'];
    //$payer_email = $_POST['payer_email'];

    if(DEBUG == true) 
        error_log(date('[Y-m-d H:i e] '). "Verified IPN: $req ". PHP_EOL, 3, LOG_FILE);
    
 else if (strcmp ($res, "INVALID") == 0) 
    // log for manual investigation
    // Add business logic here which deals with invalid IPN messages
    if(DEBUG == true) 
        error_log(date('[Y-m-d H:i e] '). "Invalid IPN: $req" . PHP_EOL, 3, LOG_FILE);
    

?>

【问题讨论】：

github.com/paypal/TLS-update

【参考方案1】：

我相信您收到此错误的原因是因为您使用的是 SSL v3，它存在严重的安全问题，因此不再受到任何严肃网站的支持。 （更多信息在这里：http://disablessl3.com/）

在上面的代码中，您指定

curl_setopt($ch, CURLOPT_SSLVERSION, 4);

但是，在错误消息中，它说

 sslv3 alert handshake failure

很明显，PHP 使用了 ssl v3。而是尝试

curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, "TLSv1") 

如此处所示：SSL error can not change to TLS

希望对你有帮助

【讨论】：

已更改但仍然出现相同的错误。我也试过 curl_setopt($ch, CURLOPT_SSLVERSION, 6);其中说应该是 TLS1.2

我的下一个假设是您的主机安装了非常旧的 mod_curl 版本？您的 php_info() 应该是 CURL 部分中的 libcurl 版本（对我来说，它是表中的第二行，标题为“Curl Information”）。您可以在此处找到版本历史记录：curl.haxx.se/docs/releases.html 如果您的版本非常旧，那么问题可能是不支持更新版本。 （在这种情况下 curl 可能会退回到 ssl v3）

2010 年 6 月 16 日 7.21.0 5.5 年

@Tsukasa 你解决了吗？ 1&1 更新了 libcurl 或者你是怎么做到的？

@viktor77 上面的步骤适用于 cURL，但我改用 fsockopen 进行通信。