Current File : /var/www/projetos/romanian.ongrace.com/wp-content/plugins/duplicator/classes/utilities/class.u.php
<?php
defined('ABSPATH') || defined('DUPXABSPATH') || exit;
require_once(DUPLICATOR_PLUGIN_PATH . '/classes/class.io.php');
/**
* Utility class used for helper type functions
*
* Standard: PSR-2
* @link http://www.php-fig.org/psr/psr-2
*
* @package Duplicator
* @subpackage classes/utilities
* @copyright (c) 2017, Snapcreek LLC
*
*/
class DUP_Util
{
const SECURE_ISSUE_DIE = 'die';
const SECURE_ISSUE_THROW = 'throw';
const SECURE_ISSUE_RETURN = 'return';
/**
* Is PHP 5.2.9 or better running
*/
public static $on_php_529_plus;
/**
* Is PHP 5.3 or better running
*/
public static $on_php_53_plus;
/**
* Is PHP 5.4 or better running
*/
public static $on_php_54_plus;
/**
* Is PHP 7 or better running
*/
public static $PHP7_plus;
/**
* array of ini disable functions
*
* @var array
*/
private static $iniDisableFuncs = null;
/**
* Initialized on load (see end of file)
*/
public static function init()
{
self::$on_php_529_plus = version_compare(PHP_VERSION, '5.2.9') >= 0;
self::$on_php_53_plus = version_compare(PHP_VERSION, '5.3.0') >= 0;
self::$on_php_54_plus = version_compare(PHP_VERSION, '5.4.0') >= 0;
self::$PHP7_plus = version_compare(PHP_VERSION, '7.0.0', '>=');
}
public static function getArchitectureString()
{
$php_int_size = PHP_INT_SIZE;
switch ($php_int_size) {
case 4:
return esc_html__('32-bit', 'duplicator');
break;
case 8:
return esc_html__('64-bit', 'duplicator');
break;
default:
return esc_html__('Unknown', 'duplicator');
}
}
public static function objectCopy($srcObject, $destObject, $skipMemberArray = null)
{
foreach ($srcObject as $member_name => $member_value) {
if (!is_object($member_value) && (($skipMemberArray == null) || !in_array($member_name, $skipMemberArray))) {
// Skipping all object members
$destObject->$member_name = $member_value;
}
}
}
public static function getWPCoreDirs()
{
$wp_core_dirs = array(get_home_path().'wp-admin', get_home_path().'wp-includes');
//if wp_content is overrided
$wp_path = get_home_path()."wp-content";
if (get_home_path().'wp-content' != WP_CONTENT_DIR) {
$wp_path = WP_CONTENT_DIR;
}
$wp_path = str_replace("\\", "/", $wp_path);
$wp_core_dirs[] = $wp_path;
$wp_core_dirs[] = $wp_path.'/plugins';
$wp_core_dirs[] = $wp_path.'/themes';
return $wp_core_dirs;
}
/**
* return absolute path for the files that are core directories
* @return string array
*/
public static function getWPCoreFiles()
{
$wp_cored_dirs = array(get_home_path().'wp-config.php');
return $wp_cored_dirs;
}
/**
* Groups an array into arrays by a given key, or set of keys, shared between all array members.
*
* Based on {@author Jake Zatecky}'s {@link https://github.com/jakezatecky/array_group_by array_group_by()} function.
* This variant allows $key to be closures.
*
* @param array $array The array to have grouping performed on.
* @param mixed $key,... The key to group or split by. Can be a _string_, an _integer_, a _float_, or a _callable_.
* - If the key is a callback, it must return a valid key from the array.
* - If the key is _NULL_, the iterated element is skipped.
* - string|oink callback ( mixed $item )
*
* @return array|null Returns a multidimensional array or `null` if `$key` is invalid.
*/
public static function array_group_by(array $array, $key)
{
if (!is_string($key) && !is_int($key) && !is_float($key) && !is_callable($key)) {
trigger_error('array_group_by(): The key should be a string, an integer, or a callback', E_USER_ERROR);
return null;
}
$func = (!is_string($key) && is_callable($key) ? $key : null);
$_key = $key;
// Load the new array, splitting by the target key
$grouped = array();
foreach ($array as $value) {
$key = null;
if (is_callable($func)) {
$key = call_user_func($func, $value);
} elseif (is_object($value) && isset($value->{$_key})) {
$key = $value->{$_key};
} elseif (isset($value[$_key])) {
$key = $value[$_key];
}
if ($key === null) {
continue;
}
$grouped[$key][] = $value;
}
// Recursively build a nested grouping if more parameters are supplied
// Each grouped array value is grouped according to the next sequential key
if (func_num_args() > 2) {
$args = func_get_args();
foreach ($grouped as $key => $value) {
$params = array_merge(array($value), array_slice($args, 2, func_num_args()));
$grouped[$key] = call_user_func_array('DUP_Util::array_group_by', $params);
}
}
return $grouped;
}
/**
* PHP_SAPI for FCGI requires a data flush of at least 256
* bytes every 40 seconds or else it forces a script halt
*
* @return string A series of 256 space characters
*/
public static function fcgiFlush()
{
echo(str_repeat(' ', 300));
@flush();
@ob_flush();
}
public static function isWpDebug()
{
return defined('WP_DEBUG') && WP_DEBUG;
}
/**
* Returns the last N lines of a file. Equivalent to tail command
*
* @param string $filepath The full path to the file to be tailed
* @param int $lines The number of lines to return with each tail call
*
* @return string The last N parts of the file
*/
public static function tailFile($filepath, $lines = 2)
{
// Open file
$f = @fopen($filepath, "rb");
if ($f === false)
return false;
// Sets buffer size
$buffer = 256;
// Jump to last character
fseek($f, -1, SEEK_END);
// Read it and adjust line number if necessary
// (Otherwise the result would be wrong if file doesn't end with a blank line)
if (fread($f, 1) != "\n")
$lines -= 1;
// Start reading
$output = '';
$chunk = '';
// While we would like more
while (ftell($f) > 0 && $lines >= 0) {
// Figure out how far back we should jump
$seek = min(ftell($f), $buffer);
// Do the jump (backwards, relative to where we are)
fseek($f, -$seek, SEEK_CUR);
// Read a chunk and prepend it to our output
$output = ($chunk = fread($f, $seek)).$output;
// Jump back to where we started reading
fseek($f, -mb_strlen($chunk, '8bit'), SEEK_CUR);
// Decrease our line counter
$lines -= substr_count($chunk, "\n");
}
// While we have too many lines
// (Because of buffer size we might have read too many)
while ($lines++ < 0) {
// Find first newline and remove all text before that
$output = substr($output, strpos($output, "\n") + 1);
}
fclose($f);
return trim($output);
}
/**
* Display human readable byte sizes
*
* @param int $size The size in bytes
*
* @return string The size of bytes readable such as 100KB, 20MB, 1GB etc.
*/
public static function byteSize($size, $roundBy = 2)
{
try {
$units = array('B', 'KB', 'MB', 'GB', 'TB');
for ($i = 0; $size >= 1024 && $i < 4; $i++) {
$size /= 1024;
}
return round($size, $roundBy).$units[$i];
}
catch (Exception $e) {
return "n/a";
}
}
/**
* Makes path safe for any OS
* Paths should ALWAYS READ be "/"
* uni: /home/path/file.txt
* win: D:/home/path/file.txt
*
* @param string $path The path to make safe
*
* @return string A path with all slashes facing "/"
*/
public static function safePath($path)
{
return str_replace("\\", "/", $path);
}
/**
* Get current microtime as a float. Method is used for simple profiling
*
* @see elapsedTime
*
* @return string A float in the form "msec sec", where sec is the number of seconds since the Unix epoch
*/
public static function getMicrotime()
{
return microtime(true);
}
/**
* Append the value to the string if it doesn't already exist
*
* @param string $string The string to append to
* @param string $value The string to append to the $string
*
* @return string Returns the string with the $value appended once
*/
public static function appendOnce($string, $value)
{
return $string.(substr($string, -1) == $value ? '' : $value);
}
/**
* Return a string with the elapsed time
*
* @see getMicrotime()
*
* @param mixed number $end The final time in the sequence to measure
* @param mixed number $start The start time in the sequence to measure
*
* @return string The time elapsed from $start to $end
*/
public static function elapsedTime($end, $start)
{
return sprintf("%.2f sec.", abs($end - $start));
}
/**
* List all of the files of a path
*
* @param string $path The full path to a system directory
*
* @return array of all files in that path
*
* Notes:
* - Avoid using glob() as GLOB_BRACE is not an option on some operating systems
* - Pre PHP 5.3 DirectoryIterator will crash on unreadable files
* - Scandir will not crash on unreadable items, but will not return results
*/
public static function listFiles($path = '.')
{
try {
$files = array();
if ($dh = opendir($path)) {
while (($file = readdir($dh)) !== false) {
if ($file == '.' || $file == '..')
continue;
$full_file_path = trailingslashit($path).$file;
$files[] = str_replace("\\", '/', $full_file_path);
}
@closedir($dh);
}
return $files;
}
catch (Exception $exc) {
$result = array();
$files = @scandir($path);
if (is_array($files)) {
foreach ($files as $file) {
$result[] = str_replace("\\", '/', $path).$file;
}
}
return $result;
}
}
/**
* List all of the directories of a path
*
* @param string $path The full path to a system directory
*
* @return array of all dirs in the $path
*/
public static function listDirs($path = '.')
{
$dirs = array();
foreach (new DirectoryIterator($path) as $file) {
if ($file->isDir() && !$file->isDot()) {
$dirs[] = DUP_Util::safePath($file->getPathname());
}
}
return $dirs;
}
/**
* Does the directory have content
*
* @param string $path The full path to a system directory
*
* @return bool Returns true if directory is empty
*/
public static function isDirectoryEmpty($path)
{
if (!is_readable($path))
return NULL;
return (count(scandir($path)) == 2);
}
/**
* Size of the directory recursively in bytes
*
* @param string $path The full path to a system directory
*
* @return int Returns the size of the directory in bytes
*
*/
public static function getDirectorySize($path)
{
if (!file_exists($path))
return 0;
if (is_file($path))
return filesize($path);
$size = 0;
$list = glob($path."/*");
if (!empty($list)) {
foreach ($list as $file)
$size += self::getDirectorySize($file);
}
return $size;
}
/**
* Can shell_exec be called on this server
*
* @return bool Returns true if shell_exec can be called on server
*
*/
public static function hasShellExec()
{
$cmds = array('shell_exec', 'escapeshellarg', 'escapeshellcmd', 'extension_loaded');
//Function disabled at server level
if (array_intersect($cmds, array_map('trim', explode(',', @ini_get('disable_functions')))))
return apply_filters('duplicator_is_shellzip_available', false);
//Suhosin: http://www.hardened-php.net/suhosin/
//Will cause PHP to silently fail
if (extension_loaded('suhosin')) {
$suhosin_ini = @ini_get("suhosin.executor.func.blacklist");
if (array_intersect($cmds, array_map('trim', explode(',', $suhosin_ini))))
return apply_filters('duplicator_is_shellzip_available', false);
}
if (! function_exists('shell_exec')) {
return apply_filters('duplicator_is_shellzip_available', false);
}
// Can we issue a simple echo command?
if (!@shell_exec('echo duplicator'))
return apply_filters('duplicator_is_shellzip_available', false);
return apply_filters('duplicator_is_shellzip_available', true);
}
/**
* Is the server running Windows operating system
*
* @return bool Returns true if operating system is Windows
*
*/
public static function isWindows()
{
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
return true;
}
return false;
}
/**
* Wrap to prevent malware scanners from reporting false/positive
* Switched from our old method to avoid WordFence reporting a false positive
*
* @param string $string The string to decrypt i.e. base64_decode
*
* @return string Returns the string base64 decoded
*/
public static function installerUnscramble($string)
{
return base64_decode($string);
}
/**
* Wrap to prevent malware scanners from reporting false/positive
* Switched from our old method to avoid WordFence reporting a false positive
*
* @param string $string The string to decrypt i.e. base64_encode
*
* @return string Returns the string base64 encode
*/
public static function installerScramble($string)
{
return base64_encode($string);
}
/**
* Does the current user have the capability
*
* @param type $permission
* @param type $exit // SECURE_ISSUE_DIE die script with die function
* SECURE_ISSUE_THROW throw an exception if fail
* SECURE_ISSUE_RETURN return false if fail
*
* @return boolean // return false is fail and $exit is SECURE_ISSUE_THROW
* // true if success
*
* @throws Exception // thow exception if $exit is SECURE_ISSUE_THROW
*/
public static function hasCapability($permission = 'read', $exit = self::SECURE_ISSUE_DIE)
{
$capability = apply_filters('wpfront_user_role_editor_duplicator_translate_capability', $permission);
if (!current_user_can($capability)) {
$exitMsg = __('You do not have sufficient permissions to access this page.', 'duplicator');
DUP_LOG::Trace('You do not have sufficient permissions to access this page. PERMISSION: '.$permission);
switch ($exit) {
case self::SECURE_ISSUE_THROW:
throw new Exception($exitMsg);
case self::SECURE_ISSUE_RETURN:
return false;
case self::SECURE_ISSUE_DIE:
default:
wp_die($exitMsg);
}
}
return true;
}
/**
* Gets the name of the owner of the current PHP script
*
* @return string The name of the owner of the current PHP script
*/
public static function getCurrentUser()
{
$unreadable = 'Undetectable';
if (function_exists('get_current_user') && is_callable('get_current_user')) {
$user = get_current_user();
return strlen($user) ? $user : $unreadable;
}
return $unreadable;
}
/**
* Gets the owner of the PHP process
*
* @return string Gets the owner of the PHP process
*/
public static function getProcessOwner()
{
$unreadable = 'Undetectable';
$user = '';
try {
if (function_exists('exec')) {
$user = @exec('whoami');
}
if (!strlen($user) && function_exists('posix_getpwuid') && function_exists('posix_geteuid')) {
$user = posix_getpwuid(posix_geteuid());
$user = $user['name'];
}
return strlen($user) ? $user : $unreadable;
}
catch (Exception $ex) {
return $unreadable;
}
}
/**
* Creates the snapshot directory if it doesn't already exist
*
* @return bool
*/
public static function initSnapshotDirectory()
{
$error = false;
$path_wproot = duplicator_get_abs_path();
$backupsDir = DUP_Settings::getSsdirPath();
$path_plugin = DUP_Util::safePath(DUPLICATOR_PLUGIN_PATH);
//--------------------------------
//DIRCTORY CREATION
//Seupt the main directory and tmp build dir
if (!file_exists($backupsDir)) {
$old_root_perm = @fileperms($path_wproot);
//CHMOD DIRECTORY ACCESS
//wordpress root directory
DupLiteSnapLibIOU::chmod($path_wproot, 'u+rwx');
//snapshot directory
if (DupLiteSnapLibIOU::dirWriteCheckOrMkdir($backupsDir, 'u+rwx,go+rx') == false) {
$error = true;
}
// restore original root perms
DupLiteSnapLibIOU::chmod($path_wproot, $old_root_perm);
if ($error) {
return false;
}
}
DupLiteSnapLibIOU::chmod($backupsDir, 'u+rwx,go+rx');
DupLiteSnapLibIOU::dirWriteCheckOrMkdir(DUP_Settings::getSsdirTmpPath(), 'u+rwx');
//--------------------------------
//FILE CREATION & HARDEN PROCESS
//index.php, .htaccess, robots.txt
self::setupBackupDirIndexFile($backupsDir);
self::setupBackupDirRobotsFile($backupsDir);
self::setupBackupDirHtaccess($backupsDir);
self::performHardenProcesses($backupsDir);
return true;
}
/**
* Attempts to create a secure .htaccess file in the download directory
*
* @return null
*/
public static function setupBackupDirHtaccess($backupsDir)
{
try {
$storageHtaccessOff = DUP_Settings::Get('storage_htaccess_off');
$fileName = "{$backupsDir}/.htaccess";
if ($storageHtaccessOff) {
@unlink($fileName);
} else if (!file_exists($fileName) || @filesize($fileName) == 0) {
$htfile = @fopen($fileName, 'w');
$htoutput = "Options -Indexes \n";
$htoutput .= "<Files *.php>\n deny from all\n</Files>";
if ($htfile !== false) {
@fwrite($htfile, $htoutput);
@fclose($htfile);
}
}
} catch (Exception $ex) {
DUP_Log::Info("Duplicator Error: Unable to properly configure .htaccess for servers storage directory {$fileName}" . $ex);
}
}
/**
* Attempts to create an index.php file in the backups directory
*
* @return null
*/
public static function setupBackupDirIndexFile($backupsDir)
{
try {
$fileName = "{$backupsDir}/index.php";
if (!file_exists($fileName)) {
$ssfile = @fopen($fileName, 'w');
if ($ssfile !== false) {
@fwrite($ssfile,
'<?php error_reporting(0); if (stristr(php_sapi_name(), "fcgi")) { $url = "http://" . $_SERVER["HTTP_HOST"]; '
. 'header("Location: {$url}/404.html");} else { header("HTTP/1.1 404 Not Found", true, 404);} exit(); ?>');
@fclose($ssfile);
}
}
} catch (Exception $ex) {
DUP_Log::Info("Duplicator Error: Unable to properly configure index.php for servers storage directory {$fileName}" . $ex);
}
}
/**
* Attempts to create a robots.txt file in the backups directory
* to prevent search engines
*
* @return null
*/
public static function setupBackupDirRobotsFile($backupsDir)
{
try {
$fileName = "{$backupsDir}/robots.txt";
if (!file_exists($fileName)) {
$robotfile = @fopen($fileName, 'w');
if ($robotfile !== false) {
@fwrite($robotfile,
"User-agent: * \n"
."Disallow: /".DUP_Settings::SSDIR_NAME_LEGACY."/\n"
."Disallow: /".DUP_Settings::SSDIR_NAME_NEW."/");
@fclose($robotfile);
}
}
} catch (Exception $ex) {
DUP_Log::Info("Duplicator Error: Unable to properly configure tobots.txt for servers storage directory {$fileName}" . $ex);
}
}
/**
* Run various secure processes to harden the backups dir
*
* @return null
*/
public static function performHardenProcesses($backupsDir)
{
//Edge Case: Remove any dup-installer/main.installer.php
$dupInstallFile = "{$backupsDir}/dup-installer/main.installer.php";
if (file_exists($dupInstallFile) ) {
DupLiteSnapLibIOU::chmod($dupInstallFile, "a+w");
DUP_IO::deleteFile("{$dupInstallFile}");
}
//Rename installer php files to .bak
DupLiteSnapLibIOU::regexGlobCallback(
$backupsDir,
function ($path) {
$parts = pathinfo($path);
$newPath = $parts['dirname'] . '/' . $parts['filename'] . DUP_Installer::INSTALLER_SERVER_EXTENSION;
DupLiteSnapLibIOU::rename($path, $newPath);
},
array(
'regexFile' => '/^.+_installer.*\.php$/',
'regexFolder' => false,
'recursive' => true,
)
);
}
/**
* Attempts to get the file zip path on a users system
*
* @return null
*/
public static function getZipPath()
{
$filepath = null;
if (self::hasShellExec()) {
if (shell_exec('hash zip 2>&1') == NULL) {
$filepath = 'zip';
} else {
$possible_paths = array(
'/usr/bin/zip',
'/opt/local/bin/zip'
//'C:/Program\ Files\ (x86)/GnuWin32/bin/zip.exe');
);
foreach ($possible_paths as $path) {
if (@file_exists($path)) {
$filepath = $path;
break;
}
}
}
}
return $filepath;
}
/**
* Is the server PHP 5.3 or better
*
* @return bool Returns true if the server PHP 5.3 or better
*/
public static function PHP53()
{
return version_compare(PHP_VERSION, '5.3.2', '>=');
}
/**
* Returns an array of the WordPress core tables.
*
* @return array Returns all WP core tables
*/
public static function getWPCoreTables()
{
global $wpdb;
$result = array();
foreach (self::getWPCoreTablesEnd() as $tend) {
$result[] = $wpdb->prefix.$tend;
}
return $result;
}
public static function getWPCoreTablesEnd()
{
return array(
'commentmeta',
'comments',
'links',
'options',
'postmeta',
'posts',
'term_relationships',
'term_taxonomy',
'termmeta',
'terms',
'usermeta',
'blogs',
'blog_versions',
'blogmeta',
'users',
'site',
'sitemeta',
'signups',
'registration_log',
'blog_versions');
}
public static function isWPCoreTable($table)
{
global $wpdb;
if (strpos($table, $wpdb->prefix) !== 0) {
return false;
}
$subTName = substr($table, strlen($wpdb->prefix));
$coreEnds = self::getWPCoreTablesEnd();
if (in_array($subTName, $coreEnds)) {
return true;
} else if (is_multisite()) {
$exTable = explode('_', $subTName);
if (count($exTable) >= 2 && is_numeric($exTable[0])) {
$tChekc = implode('_', array_slice($exTable, 1));
if (get_blog_details((int) $exTable[0], false) !== false && in_array($tChekc, $coreEnds)) {
return true;
}
}
}
return false;
}
public static function getWPBlogIdTable($table)
{
global $wpdb;
if (!is_multisite() || strpos($table, $wpdb->prefix) !== 0) {
return 0;
}
$subTName = substr($table, strlen($wpdb->prefix));
$exTable = explode('_', $subTName);
if (count($exTable) >= 2 && is_numeric($exTable[0]) && get_blog_details((int) $exTable[0], false) !== false) {
return (int) $exTable[0];
} else {
return 0;
}
}
/**
* Check given table is exist in real
*
* @param $table string Table name
* @return booleam
*/
public static function isTableExists($table)
{
// It will clear the $GLOBALS['wpdb']->last_error var
$GLOBALS['wpdb']->flush();
$sql = "SELECT 1 FROM `".esc_sql($table)."` LIMIT 1;";
$ret = $GLOBALS['wpdb']->get_var($sql);
if (empty($GLOBALS['wpdb']->last_error))
return true;
return false;
}
/**
* Finds if its a valid executable or not
*
* @param type $exe A non zero length executable path to find if that is executable or not.
* @param type $expectedValue expected value for the result
* @return boolean
*/
public static function isExecutable($cmd)
{
if (strlen($cmd) < 1)
return false;
if (@is_executable($cmd)) {
return true;
}
$output = shell_exec($cmd);
if (!is_null($output)) {
return true;
}
$output = shell_exec($cmd.' -?');
if (!is_null($output)) {
return true;
}
return false;
}
/**
* Display human readable byte sizes
*
* @param string $size The size in bytes
*
* @return string Human readable bytes such as 50MB, 1GB
*/
public static function readableByteSize($size)
{
try {
$units = array('B', 'KB', 'MB', 'GB', 'TB');
for ($i = 0; $size >= 1024 && $i < 4; $i++)
$size /= 1024;
return round($size, 2).$units[$i];
}
catch (Exception $e) {
return "n/a";
}
}
public static function getTablePrefix()
{
global $wpdb;
$tablePrefix = (is_multisite() && is_plugin_active_for_network('duplicator/duplicator.php')) ? $wpdb->base_prefix : $wpdb->prefix;
return $tablePrefix;
}
/**
* return ini disable functions array
*
* @return array
*/
public static function getIniDisableFuncs()
{
if (is_null(self::$iniDisableFuncs)) {
$tmpFuncs = ini_get('disable_functions');
$tmpFuncs = explode(',', $tmpFuncs);
self::$iniDisableFuncs = array();
foreach ($tmpFuncs as $cFunc) {
self::$iniDisableFuncs[] = trim($cFunc);
}
}
return self::$iniDisableFuncs;
}
/**
* Check if function exists and isn't in ini disable_functions
*
* @param string $function_name
* @return bool
*/
public static function isIniFunctionEnalbe($function_name)
{
return function_exists($function_name) && !in_array($function_name, self::getIniDisableFuncs());
}
/**
* Is the web server IIS
*
* @return bool Returns true if web server is IIS
*/
public static function isIISRunning()
{
if (isset($_SERVER["SERVER_SOFTWARE"])) {
$sSoftware = strtolower($_SERVER["SERVER_SOFTWARE"]);
if ( strpos($sSoftware, "microsoft-iis") !== false ) {
return true;
} else {
return false;
}
}
return false;
}
}
Mini Shell