prestashop Paypal支付组件无法正常工作

由于新版本的paypal支付组件在Prestashop中拥有较高的安全要求，因些可能会因为以下各种原因无法正常工作

1.服务器限制，包含dns无解析等

2.paypal插件文件权限问题，这个需要进入module/paypal修复文件权限，同其它ps程序文件权限一致

3.测试是否能够正常通信

测试脚本1

<?php
function get_tls_version($sslversion = null)
{
    $c = curl_init();
    curl_setopt($c, CURLOPT_URL, "https://www.howsmyssl.com/a/check");
    curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
    if ($sslversion !== null) {
        curl_setopt($c, CURLOPT_SSLVERSION, $sslversion);
    }
    $rbody = curl_exec($c);
    if ($rbody === false) {
        $errno = curl_errno($c);
        $msg = curl_error($c);
        curl_close($c);
        return "Error! errno = " . $errno . ", msg = " . $msg;
    } else {
        $r = json_decode($rbody);
        curl_close($c);
        return $r->tls_version;
    }
}

echo "<pre>\n";

echo "OS: " . PHP_OS . "\n";
echo "uname: " . php_uname() . "\n";
echo "PHP version: " . phpversion() . "\n";

$curl_version = curl_version();
echo "curl version: " . $curl_version["version"] . "\n";
echo "SSL version: " . $curl_version["ssl_version"] . "\n";
echo "SSL version number: " . $curl_version["ssl_version_number"] . "\n";
echo "OPENSSL_VERSION_NUMBER: " . dechex(OPENSSL_VERSION_NUMBER) . "\n";

echo "TLS test (default): " . get_tls_version() . "\n";
echo "TLS test (TLS_v1): " . get_tls_version(1) . "\n";
echo "TLS test (TLS_v1_2): " . get_tls_version(6) . "\n";

echo "</pre>\n";

PAYPAL在文件

paypal/services/Checker.php

里面有代码

public function checkTLSVersion()
 {
     $return = [
         'status' => false,
         'error_message' => '',
     ];

     if (defined('CURL_SSLVERSION_TLSv1_2') == false) {
         define('CURL_SSLVERSION_TLSv1_2', 6);
     }

     $tls_server = $this->context->link->getModuleLink($this->module->name, 'tlscurltestserver');
     $curl = curl_init($tls_server);
     curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
     curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);
     curl_setopt($curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
     $response = curl_exec($curl);
     if (trim($response) != 'ok') {
         $return['status'] = false;
         $curl_info = curl_getinfo($curl);
         if ($curl_info['http_code'] == 401) {
             $return['error_message'] = $this->module->l('401 Unauthorised. Please note that the TLS verification can\'t be done if you have htaccess password protection, debug or maintenance mode enabled on your web site.', 'AdminPayPalController');
         } else {
             $return['error_message'] = curl_error($curl);
         }
     } else {
         $return['status'] = true;
     }

     return $return;
 }

需求1.2及以上版本CURL支持

测试代码2

    <?

// create curl resource 
$ch = curl_init();

// set url 
curl_setopt($ch, CURLOPT_URL, "https://api.nextendweb.com/");

//return the transfer as a string 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$errorFile = dirname(__FILE__) . '/curl_error.txt';
$out       = fopen($errorFile, "w");
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_STDERR, $out);

// $output contains the output string 
$output = curl_exec($ch);

curl_close($ch);
fclose($out);

echo "<h1>LOG</h1>";
echo "<pre>";
echo htmlspecialchars(file_get_contents($errorFile));
unlink($errorFile);
echo "</pre>";

可以查看具体是什么原因导致的问题，

比如，在BT面板中,ssl默认用的是

/etc/pki/tls/certs/ca-bundle.crt

如提示这个文件过期，可下载最新的证书从 https://curl.se/ca/cacert.pem 链接

然后打开复制到报错文件中

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