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<?php
/**
* @package Duplicator
* @copyright (c) 2022, Snap Creek LLC
*/
namespace Duplicator\Utils;
use Error;
use Exception;
use VendorDuplicator\WpOrg\Requests\Requests;
use VendorDuplicator\WpOrg\Requests\Auth\Basic;
use VendorDuplicator\WpOrg\Requests\Response;
/**
* PHP check utility
*/
class PHPExecCheck
{
/** @var string */
protected $dir = '';
/** @var string */
protected $url = '';
/** @var string */
protected $phpTestFile = '';
/** @var null|Response */
protected $lastResponse = null;
/** @var string */
protected $lastError = '';
const PHP_OK = 1;
const PHP_FAIL_FILE_CREATE = -1;
const PHP_REQUEST_FAIL = -2;
const PHP_RESULT_FAIL = -3;
const TEST_FILE_PREFIX = 'dup_php_test_';
const TEST_FILE_CONTENT = <<<TEST
<?php echo "abcde";
TEST;
/**
* Class contructor
*
* @param string $dir dir to check
* @param string $url related URL dir
*/
public function __construct($dir, $url)
{
if (!is_dir($dir)) {
throw new Exception('Dir ' . $dir . ' must be a directory');
}
$this->dir = trailingslashit($dir);
$this->url = trailingslashit($url);
}
/**
* Class destructor
*/
public function __destruct()
{
$this->removeTestFile();
}
/**
* Check if PHP is executable in $dir
*
* @return int return PHP check result status (see constants)
*/
public function check()
{
try {
$this->lastResponse = null;
$this->lastError = '';
if ($this->createTestFile() == false) {
throw new Exception('Couldn\'t create test php file', self::PHP_FAIL_FILE_CREATE);
}
$options = array(
//'max_bytes' => 250,
'verify' => false,
'verifyname' => false,
);
if (isset($_SERVER['PHP_AUTH_USER'])) {
$options['auth'] = new Basic(array(
$_SERVER['PHP_AUTH_USER'],
(isset($_SERVER['PHP_AUTH_PW']) ? $_SERVER['PHP_AUTH_PW'] : ''),
));
}
$testUrl = $this->url . basename($this->phpTestFile);
$this->lastResponse = $response = Requests::get(
$testUrl,
array(),
$options
);
$this->removeTestFile();
if ($response->success !== true || $response->status_code !== 200) {
throw new Exception("Server responded with status code $response->status_code. File: $testUrl", self::PHP_REQUEST_FAIL);
}
if (strcmp($response->body, 'abcde') !== 0) {
throw new Exception('The HTTP response body is different from expected result. Please check if PHP is running.', self::PHP_RESULT_FAIL);
}
} catch (Exception $e) {
$this->lastError = $e->getMessage();
$this->removeTestFile();
return $e->getCode();
} catch (Error $e) {
$this->lastError = $e->getMessage();
$this->removeTestFile();
return $e->getCode();
}
return self::PHP_OK;
}
/**
* Create test file, removes the old one if it already exists.
*
* @return bool Returns true on success or false on failure.
*/
protected function createTestFile()
{
$this->removeTestFile();
// prevent tempnam to create the file in system's temporary directory
if (!is_writable($this->dir)) {
return false;
}
if (($tempfile = tempnam($this->dir, self::TEST_FILE_PREFIX)) === false) {
return false;
}
unlink($tempfile); // remove temp file to recreate it with php extension
$this->phpTestFile = $tempfile . '.php';
return (file_put_contents($this->phpTestFile, self::TEST_FILE_CONTENT) !== false);
}
/**
* Remove test file if exists
*
* @return bool Returns true on success or false on failure.
*/
protected function removeTestFile()
{
$result = true;
if (strlen($this->phpTestFile) == 0) {
return $result;
}
if (file_exists($this->phpTestFile)) {
$result = unlink($this->phpTestFile);
}
$this->phpTestFile = '';
return $result;
}
/**
* Get responde of last check
*
* @return null|Response
*/
public function getLastResponse()
{
return $this->lastResponse;
}
/**
* Get last error message
*
* @return string Returns error message of last check
*/
public function getLastError()
{
return $this->lastError;
}
}