<?php
/**
 * Verify compatibility level of current php install with php-xmlrpc lib
 *
 * @author Gaetano Giunta
 * @copyright (C) 2006-2014 G. Giunta
 * @license code licensed under the BSD License: http://phpxmlrpc.sourceforge.net/license.txt
 *
 * @todo add a test for php output buffering?
 */

function phpxmlrpc_verify_compat($mode='client')
{
  $tests = array();

  if ($mode == 'server')
  {
    // test for php version
    $ver = phpversion();
    $tests['php_version'] = array();
    $tests['php_version']['description'] = 'PHP version found: '.$ver.".\n\n";
    if (version_compare($ver, '5.1.0') < 0)
    {
      $tests['php_version']['status'] = 0;
      $tests['php_version']['description'] .= 'This version of PHP is not compatible with this release of the PHP XMLRPC library. Please upgrade to php 5.1.0 or later';
    }
    else
    {
      $tests['php_version']['status'] = 2;
      $tests['php_version']['description'] .= 'This version of PHP is fully compatible with the PHP XMLRPC library';
    }

    // test for zlib
    $tests['zlib'] = array();
    if (!function_exists('gzinflate'))
    {
      $tests['zlib']['status'] = 0;
      $tests['zlib']['description'] = "The zlib extension is not enabled.\n\nYou will not be able to receive compressed requests or send compressed responses, unless using the cURL library (for 'HTTPS' and 'HTTP 1.1' connections)";
    }
    else
    {
      $tests['zlib']['status'] = 2;
      $tests['zlib']['description'] = "The zlib extension is enabled.\n\nYou will be able to receive compressed requests and send compressed responses for the 'HTTP' protocol";
    }

    // test for dispaly of php errors in xml reponse
    if (ini_get('display_errors'))
    {
      if (intval(ini_get('error_reporting')) && E_NOTICE )
      {
        $tests['display_errors']['status'] = 1;
        $tests['display_errors']['description'] = "Error reporting level includes E_NOTICE errors, and display_errors is set to ON.\n\nAny error, warning or notice raised while executing php code exposed as xmlrpc method will result in an invalid xmlrpc response";
      }
      else
      {
        $tests['display_errors']['status'] = 1;
        $tests['display_errors']['description'] = "display_errors is set to ON.\n\nAny error raised while executing php code exposed as xmlrpc method will result in an invalid xmlrpc response";
      }
    }

  }
  else
  {

    // test for php version
    $ver = phpversion();
    $tests['php_version'] = array();
    $tests['php_version']['description'] = 'PHP version found: '.$ver.".\n\n";
    if (version_compare($ver, '5.1.0') < 0)
    {
      $tests['php_version']['status'] = 0;
      $tests['php_version']['description'] .= 'This version of PHP is not compatible with the PHP XMLRPC library. Please upgrade to 5.1.0 or later';
    }
    else
    {
      $tests['php_version']['status'] = 2;
      $tests['php_version']['description'] .= 'This version of PHP is fully compatible with the PHP XMLRPC library';
    }

    // test for zlib
    $tests['zlib'] = array();
    if (!function_exists('gzinflate'))
    {
      $tests['zlib']['status'] = 0;
      $tests['zlib']['description'] = "The zlib extension is not enabled.\n\nYou will not be able to send compressed requests or receive compressed responses, unless using the cURL library (for 'HTTPS' and 'HTTP 1.1' connections)";
    }
    else
    {
      $tests['zlib']['status'] = 2;
      $tests['zlib']['description'] = "The zlib extension is enabled.\n\nYou will be able to send compressed requests and receive compressed responses for the 'HTTP' protocol";
    }

    // test for CURL
    $tests['curl'] = array();
    if (!extension_loaded('curl'))
    {
      $tests['curl']['status'] = 0;
      $tests['curl']['description'] = "The cURL extension is not enabled.\n\nYou will not be able to send and receive messages using 'HTTPS' and 'HTTP 1.1' protocols";
    }
    else
    {
      $info = curl_version();
      $tests['curl']['status'] = 2;
      $tests['curl']['description'] = "The cURL extension is enabled.\n\nYou will be able to send and receive messages using 'HTTPS' and 'HTTP 1.1' protocols";
      if (version_compare($ver, '4.3.8') < 0)
      {
        $tests['curl']['status'] = 1;
        $tests['curl']['description'] .= ".\nPlease note that the current cURL install does not support keep-alives";
      }
      if (!((is_string($info) && strpos($info, 'zlib') !== null) || isset($info['libz_version'])))
      {
        $tests['curl']['status'] = 1;
        $tests['curl']['description'] .= ".\nPlease note that the current cURL install does not support compressed messages";
      }
      if (!((is_string($info) && strpos($info, 'OpenSSL') !== null) || isset($info['ssl_version'])))
      {
        $tests['curl']['status'] = 1;
        $tests['curl']['description'] .= ".\nPlease note that the current cURL install does not support HTTPS connections";
      }
    }

  }
  return $tests;
}

?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>PHP XMLRPC compatibility assessment</title>
<style type="text/css">
body, html {background-color: white; font-family: Arial, Verdana, Geneva, sans-serif; font-size: small; }
table { border: 1px solid gray; padding: 0;}
thead { background-color: silver; color: black; }
td { margin: 0; padding: 0.5em; }
tbody td { border-top: 1px solid gray; }
.res0 { background-color: red; color: black; border-right: 1px solid gray; }
.res1 { background-color: yellow; color: black; border-right: 1px solid gray; }
.res2 { background-color: green; color: black; border-right: 1px solid gray; }
.result { white-space: pre; }
</style>
</head>
<body>
<h1>PHPXMLRPC compatibility assessment with the current PHP install</h1>
<h4>For phpxmlrpc version 3.0 or later</h4>
<h3>Server usage</h3>
<table cellspacing="0">
<thead>
<tr><td>Test</td><td>Result</td></tr>
</thead>
<tbody>
<?php
  $res = phpxmlrpc_verify_compat('server');
  foreach($res as $test => $result)
  {
      echo '<tr><td class="res'.$result['status'].'">'.htmlspecialchars($test).'</td><td class="result">'.htmlspecialchars($result['description'])."</td></tr>\n";
  }
?>
</tbody>
</table>
<h3>Client usage</h3>
<table cellspacing="0">
<thead>
<tr><td>Test</td><td>Result</td></tr>
</thead>
<tbody>
<?php
  $res = phpxmlrpc_verify_compat('client');
  foreach($res as $test => $result)
  {
      echo '<tr><td class="res'.$result['status'].'">'.htmlspecialchars($test).'</td><td class="result">'.htmlspecialchars($result['description'])."</td></tr>\n";
  }
?>
</tbody>
</table>
</body>
</html>