File: /home/locglobe/public_html/wp-content/plugins/duplicator/classes/utilities/class.u.php
<?php
/**
* Recursivly scans a directory and finds all sym-links and unreadable files
*
* Standard: PSR-2
* @link http://www.php-fig.org/psr/psr-2
*
* @package Duplicator
* @subpackage classes/utilites
* @copyright (c) 2017, Snapcreek LLC
* @since 1.1.0
*
* @todo Refactor out IO methods into class.io.php file
*/
// Exit if accessed directly
if (!defined('DUPLICATOR_VERSION')) {
exit;
}
class DUP_Util
{
/**
* 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 $PHP7_plus;
/**
* Inited on load (see end of file)
*/
public static function init()
{
self::$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', '>=');
}
/**
* 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|int 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 hault
*
* @return string A series of 256 space characters
*/
public static function fcgiFlush()
{
echo(str_repeat(' ', 300));
@flush();
@ob_flush();
}
/**
* Returns the wp-snapshot url
*
* @return string The full url of the duplicators snapshot storage directory
*/
public static function snapshotURL()
{
return get_site_url(null, '', is_ssl() ? 'https' : 'http').'/'.DUPLICATOR_SSDIR_NAME.'/';
}
/**
* Returns the last N lines of a file. Equivelent 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);
}
/**
* Runs the APC cache to pre-cache the php files
*
* @returns bool True if all files where cached
*/
public static function runAPC()
{
if (function_exists('apc_compile_file')) {
$file01 = @apc_compile_file(DUPLICATOR_PLUGIN_PATH."duplicator.php");
return ($file01);
} else {
return false;
}
}
/**
* 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.xt
* 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 {
$files = array();
foreach (new DirectoryIterator($path) as $file) {
$files[] = str_replace("\\", '/', $file->getPathname());
}
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 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(',', $suhosin_ini)))) return false;
}
// Can we issue a simple echo command?
if (!@shell_exec('echo duplicator')) return false;
return true;
}
/**
* Is the server running Windows operating system
*
* @return bool Returns true if operating system is Windows
*
*/
public static function isWindows()
{
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
return true;
}
return false;
}
/**
* Does the current user have the capability
*
* @return null Dies if user doesn't have the correct capability
*/
public static function hasCapability($permission = 'read')
{
$capability = $permission;
$capability = apply_filters('wpfront_user_role_editor_duplicator_translate_capability', $capability);
if (!current_user_can($capability)) {
wp_die(__('You do not have sufficient permissions to access this page.', 'duplicator'));
return;
}
}
/**
* 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 exisit
*
* @return null
*/
public static function initSnapshotDirectory()
{
$path_wproot = DUP_Util::safePath(DUPLICATOR_WPROOTPATH);
$path_ssdir = DUP_Util::safePath(DUPLICATOR_SSDIR_PATH);
$path_plugin = DUP_Util::safePath(DUPLICATOR_PLUGIN_PATH);
//--------------------------------
//CHMOD DIRECTORY ACCESS
//wordpress root directory
@chmod($path_wproot, 0755);
//snapshot directory
@mkdir($path_ssdir, 0755);
@chmod($path_ssdir, 0755);
//snapshot tmp directory
$path_ssdir_tmp = $path_ssdir.'/tmp';
@mkdir($path_ssdir_tmp, 0755);
@chmod($path_ssdir_tmp, 0755);
//plugins dir/files
@chmod($path_plugin.'files', 0755);
//--------------------------------
//FILE CREATION
//SSDIR: Create Index File
$ssfile = @fopen($path_ssdir.'/index.php', 'w');
@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);
//SSDIR: Create token file in snapshot
$tokenfile = @fopen($path_ssdir.'/dtoken.php', 'w');
@fwrite($tokenfile,
'<?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($tokenfile);
//SSDIR: Create .htaccess
$storage_htaccess_off = DUP_Settings::Get('storage_htaccess_off');
if ($storage_htaccess_off) {
@unlink($path_ssdir.'/.htaccess');
} else {
$htfile = @fopen($path_ssdir.'/.htaccess', 'w');
$htoutput = "Options -Indexes";
@fwrite($htfile, $htoutput);
@fclose($htfile);
}
//SSDIR: Robots.txt file
$robotfile = @fopen($path_ssdir.'/robots.txt', 'w');
@fwrite($robotfile, "User-agent: * \nDisallow: /".DUPLICATOR_SSDIR_NAME.'/');
@fclose($robotfile);
//PLUG DIR: Create token file in plugin
$tokenfile2 = @fopen($path_plugin.'installer/dtoken.php', 'w');
@fwrite($tokenfile2,
'<?php @error_reporting(0); @require_once("../../../../wp-admin/admin.php"); global $wp_query; $wp_query->set_404(); header("HTTP/1.1 404 Not Found", true, 404); header("Status: 404 Not Found"); @include(get_template_directory () . "/404.php"); ?>');
@fclose($tokenfile2);
}
/**
* 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;
}
/**
* Returns a GUIDv4 string
*
* Uses the best cryptographically secure method
* for all supported pltforms with fallback to an older,
* less secure version.
*
* @param bool $trim Trim '}{' curly
* @param bool $nodash Remove the dashes from the GUID
* @param bool $grail Add a 'G' to the end for status
*
* @return string
*/
public static function GUIDv4($trim = true, $nodash = true, $gtrail = true)
{
// Windows
if (function_exists('com_create_guid') === true) {
if ($trim === true) {
$guidv4 = trim(com_create_guid(), '{}');
} else {
$guidv4 = com_create_guid();
}
//Linux
} elseif (function_exists('openssl_random_pseudo_bytes') === true) {
$data = openssl_random_pseudo_bytes(16);
$data[6] = chr(ord($data[6]) & 0x0f | 0x40); // set version to 0100
$data[8] = chr(ord($data[8]) & 0x3f | 0x80); // set bits 6-7 to 10
$guidv4 = vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
// Fallback (PHP 4.2+)
} else {
mt_srand((double) microtime() * 10000);
$charid = strtolower(md5(uniqid(rand(), true)));
$hyphen = chr(45); // "-"
$lbrace = $trim ? "" : chr(123); // "{"
$rbrace = $trim ? "" : chr(125); // "}"
$guidv4 = $lbrace.
substr($charid, 0, 8).$hyphen.
substr($charid, 8, 4).$hyphen.
substr($charid, 12, 4).$hyphen.
substr($charid, 16, 4).$hyphen.
substr($charid, 20, 12).
$rbrace;
}
if ($nodash) {
$guidv4 = str_replace('-', '', $guidv4);
}
if ($gtrail) {
$guidv4 = $guidv4.'G';
}
return $guidv4;
}
}
DUP_Util::init();
?>