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<?php
/**
* Recursive creates directory
*
* @param string $path
* @param integer $mask
* @param string $curr_path
* @return boolean
*/
function w3_mkdir($path, $mask = 0777, $curr_path = '') {
$path = w3_realpath($path);
$path = trim($path, '/');
$dirs = explode('/', $path);
foreach ($dirs as $dir) {
if ($dir == '') {
return false;
}
$curr_path .= ($curr_path == '' ? '' : '/') . $dir;
if (!@is_dir($curr_path)) {
if (!@mkdir($curr_path, $mask)) {
return false;
}
}
}
return true;
}
/**
* Recursive creates directory from some directory
* Does not try to create directory before from
*
* @param string $path
* @param string $from_path
* @param integer $mask
* @return boolean
*/
function w3_mkdir_from($path, $from_path = '', $mask = 0777) {
$path = w3_realpath($path);
$from_path = w3_realpath($from_path);
if (substr($path, 0, strlen($from_path)) != $from_path)
return false;
$path = substr($path, strlen($from_path));
$path = trim($path, '/');
$dirs = explode('/', $path);
$curr_path = $from_path;
foreach ($dirs as $dir) {
if ($dir == '') {
return false;
}
$curr_path .= ($curr_path == '' ? '' : '/') . $dir;
if (!@is_dir($curr_path)) {
if (!@mkdir($curr_path, $mask)) {
return false;
}
}
}
return true;
}
/**
* Recursive remove dir
*
* @param string $path
* @param array $exclude
* @param bool $remove
* @return void
*/
function w3_rmdir($path, $exclude = array(), $remove = true) {
$dir = @opendir($path);
if ($dir) {
while (($entry = @readdir($dir)) !== false) {
if ($entry == '.' || $entry == '..') {
continue;
}
foreach ($exclude as $mask) {
if (fnmatch($mask, basename($entry))) {
continue 2;
}
}
$full_path = $path . DIRECTORY_SEPARATOR . $entry;
if (@is_dir($full_path)) {
w3_rmdir($full_path, $exclude);
} else {
@unlink($full_path);
}
}
@closedir($dir);
if ($remove) {
@rmdir($path);
}
}
}
/**
* Recursive empty dir
*
* @param string $path
* @param array $exclude
* @return void
*/
function w3_emptydir($path, $exclude = array()) {
w3_rmdir($path, $exclude, false);
}
/**
* Check if file is write-able
*
* @param string $file
* @return boolean
*/
function w3_is_writable($file) {
$exists = file_exists($file);
$fp = @fopen($file, 'a');
if ($fp) {
fclose($fp);
if (!$exists) {
@unlink($file);
}
return true;
}
return false;
}
/**
* Cehck if dir is write-able
*
* @param string $dir
* @return boolean
*/
function w3_is_writable_dir($dir) {
$file = $dir . '/' . uniqid(mt_rand()) . '.tmp';
return w3_is_writable($file);
}
/**
* Returns dirname of path
*
* @param string $path
* @return string
*/
function w3_dirname($path) {
$dirname = dirname($path);
if ($dirname == '.' || $dirname == '/' || $dirname == '\\') {
$dirname = '';
}
return $dirname;
}
function w3_make_relative_path($filename, $base_dir) {
$filename = w3_realpath($filename);
$base_dir = w3_realpath($base_dir);
$filename_parts = explode('/', trim($filename, '/'));
$base_dir_parts = explode('/', trim($base_dir, '/'));
// count number of equal path parts
for ($equal_number = 0;;$equal_number++) {
if ($equal_number >= count($filename_parts) ||
$equal_number >= count($base_dir_parts))
break;
if ($filename_parts[$equal_number] != $base_dir_parts[$equal_number])
break;
}
$relative_dir = str_repeat('../', count($base_dir_parts) - $equal_number);
$relative_dir .= implode('/', array_slice($filename_parts, $equal_number));
return $relative_dir;
}
/**
* Returns open basedirs
*
* @return array
*/
function w3_get_open_basedirs() {
$open_basedir_ini = ini_get('open_basedir');
$open_basedirs = (W3TC_WIN ? preg_split('~[;,]~', $open_basedir_ini) : explode(':', $open_basedir_ini));
$result = array();
foreach ($open_basedirs as $open_basedir) {
$open_basedir = trim($open_basedir);
if (!empty($open_basedir) && $open_basedir != '') {
$result[] = w3_realpath($open_basedir);
}
}
return $result;
}
/**
* Checks if path is restricted by open_basedir
*
* @param string $path
* @return boolean
*/
function w3_check_open_basedir($path) {
$path = w3_realpath($path);
$open_basedirs = w3_get_open_basedirs();
if (!count($open_basedirs)) {
return true;
}
foreach ($open_basedirs as $open_basedir) {
if (strstr($path, $open_basedir) !== false) {
return true;
}
}
return false;
}
function w3_get_file_permissions($file) {
if (function_exists('fileperms') && $fileperms = @fileperms($file)) {
$fileperms = 0777 & $fileperms;
} else {
clearstatcache();
$stat=@stat($file);
if ($stat)
$fileperms = 0777 & $stat['mode'];
else
$fileperms = 0;
}
return $fileperms;
}
function w3_get_file_owner($file = '') {
$fileowner = $filegroup = 'unknown';
if ($file) {
if (function_exists('fileowner') && function_exists('fileowner')) {
$fileowner = @fileowner($file);
$filegroup = @filegroup($file);
if (function_exists('posix_getpwuid') && function_exists('posix_getgrgid')) {
$fileowner = @posix_getpwuid($fileowner);
$fileowner = $fileowner['name'];
$filegroup = @posix_getgrgid($filegroup);
$filegroup = $filegroup['name'];
}
}
} else {
if (function_exists('getmyuid') && function_exists('getmygid')) {
$fileowner = @getmyuid();
$filegroup = @getmygid();
if (function_exists('posix_getpwuid') && function_exists('posix_getgrgid')) {
$fileowner = @posix_getpwuid($fileowner);
$fileowner = $fileowner['name'];
$filegroup = @posix_getgrgid($filegroup);
$filegroup = $filegroup['name'];
}
}
}
return $fileowner . ':' . $filegroup;
}
/**
* Atomically writes file inside W3TC_CACHE_DIR dir
* @param $filename
* @param $content
* @throws Exception
* @return void
**/
function w3_file_put_contents_atomic($filename, $content) {
if (!is_dir(W3TC_CACHE_TMP_DIR) || !is_writable(W3TC_CACHE_TMP_DIR)) {
w3_mkdir_from(W3TC_CACHE_TMP_DIR, W3TC_CACHE_DIR);
if (!is_dir(W3TC_CACHE_TMP_DIR) || !is_writable(W3TC_CACHE_TMP_DIR)) {
throw new Exception('Can\'t create folder <strong>' .
W3TC_CACHE_TMP_DIR . '</strong>');
}
}
$temp = tempnam(W3TC_CACHE_TMP_DIR, 'temp');
try {
if (!($f = @fopen($temp, 'wb'))) {
if (file_exists($temp))
@unlink($temp);
throw new Exception('Can\'t write to temporary file <strong>' .
$temp . '</strong>');
}
fwrite($f, $content);
fclose($f);
if (!@rename($temp, $filename)) {
@unlink($filename);
if (!@rename($temp, $filename)) {
w3_mkdir_from(dirname($filename), W3TC_CACHE_DIR);
if (!@rename($temp, $filename)) {
throw new Exception('Can\'t write to file <strong>' .
$filename . '</strong>');
}
}
}
$chmod = 0644;
if (defined('FS_CHMOD_FILE'))
$chmod = FS_CHMOD_FILE;
@chmod($filename, $chmod);
} catch (Exception $ex) {
if (file_exists($temp))
@unlink($temp);
throw $ex;
}
}
/**
* Takes a W3TC settings array and formats it to a PHP String
* @param $data
* @return string
*/
function w3tc_format_data_as_settings_file($data) {
$config = "<?php\r\n\r\nreturn array(\r\n";
foreach ($data as $key => $value)
$config .= w3tc_format_array_entry_as_settings_file_entry(1, $key, $value);
$config .= ");";
return $config;
}
/**
* Writes array item to file
*
* @param int $tabs
* @param string $key
* @param mixed $value
* @return string
*/
function w3tc_format_array_entry_as_settings_file_entry($tabs, $key, $value) {
$item = str_repeat("\t", $tabs);
if (is_numeric($key) && (string)(int)$key === (string)$key) {
$item .= sprintf("%d => ", $key);
} else {
$item .= sprintf("'%s' => ", addcslashes($key, "'\\"));
}
switch (gettype($value)) {
case 'object':
case 'array':
$item .= "array(\r\n";
foreach ((array)$value as $k => $v) {
$item .= w3tc_format_array_entry_as_settings_file_entry($tabs + 1, $k, $v);
}
$item .= sprintf("%s),\r\n", str_repeat("\t", $tabs));
return $item;
case 'integer':
$data = (string)$value;
break;
case 'double':
$data = (string)$value;
break;
case 'boolean':
$data = ($value ? 'true' : 'false');
break;
case 'NULL':
$data = 'null';
break;
default:
case 'string':
$data = "'" . addcslashes($value, "'\\") . "'";
break;
}
$item .= $data . ",\r\n";
return $item;
}
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