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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
namespace Joomla\CMS\Filesystem;
\defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Crypt\Crypt;
if (!\defined('JPATH_ROOT')) {
// Define a string constant for the root directory of the file system in native format
\define('JPATH_ROOT', Path::clean(JPATH_SITE));
}
/**
* A Path handling class
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path instead.
*/
class Path
{
/**
* Checks if a path's permissions can be changed.
*
* @param string $path Path to check.
*
* @return boolean True if path can have mode changed.
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::canChmod() instead.
*/
public static function canChmod($path)
{
$perms = fileperms($path);
if ($perms !== false) {
if (@chmod($path, $perms ^ 0001)) {
@chmod($path, $perms);
return true;
}
}
return false;
}
/**
* Chmods files and directories recursively to given permissions.
*
* @param string $path Root path to begin changing mode [without trailing slash].
* @param string $filemode Octal representation of the value to change file mode to [null = no change].
* @param string $foldermode Octal representation of the value to change folder mode to [null = no change].
*
* @return boolean True if successful [one fail means the whole operation failed].
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::setPermissions() instead.
*/
public static function setPermissions($path, $filemode = '0644', $foldermode = '0755')
{
// Initialise return value
$ret = true;
if (is_dir($path)) {
$dh = opendir($path);
while ($file = readdir($dh)) {
if ($file != '.' && $file != '..') {
$fullpath = $path . '/' . $file;
if (is_dir($fullpath)) {
if (!self::setPermissions($fullpath, $filemode, $foldermode)) {
$ret = false;
}
} else {
if (isset($filemode)) {
if (!@ chmod($fullpath, octdec($filemode))) {
$ret = false;
}
}
}
}
}
closedir($dh);
if (isset($foldermode)) {
if (!@ chmod($path, octdec($foldermode))) {
$ret = false;
}
}
} else {
if (isset($filemode)) {
$ret = @ chmod($path, octdec($filemode));
}
}
return $ret;
}
/**
* Get the permissions of the file/folder at a given path.
*
* @param string $path The path of a file/folder.
*
* @return string Filesystem permissions.
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::getPermissions() instead.
* The framework class throws Exceptions in case of error which you have to catch.
*/
public static function getPermissions($path)
{
$path = self::clean($path);
$mode = @ decoct(@ fileperms($path) & 0777);
if (\strlen($mode) < 3) {
return '---------';
}
$parsed_mode = '';
for ($i = 0; $i < 3; $i++) {
// Read
$parsed_mode .= ($mode[$i] & 04) ? 'r' : '-';
// Write
$parsed_mode .= ($mode[$i] & 02) ? 'w' : '-';
// Execute
$parsed_mode .= ($mode[$i] & 01) ? 'x' : '-';
}
return $parsed_mode;
}
/**
* Checks for snooping outside of the file system root.
*
* @param string $path A file system path to check.
*
* @return string A cleaned version of the path or exit on error.
*
* @throws \Exception
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::check() instead.
*/
public static function check($path)
{
if (strpos($path, '..') !== false) {
// Don't translate
throw new \Exception(
sprintf(
'%s() - Use of relative paths not permitted',
__METHOD__
)
);
}
$path = self::clean($path);
if ((JPATH_ROOT != '') && strpos($path, self::clean(JPATH_ROOT)) !== 0) {
throw new \Exception(
sprintf(
'%1$s() - Snooping out of bounds @ %2$s',
__METHOD__,
self::removeRoot($path)
)
);
}
return $path;
}
/**
* Function to strip additional / or \ in a path name.
*
* @param string $path The path to clean.
* @param string $ds Directory separator (optional).
*
* @return string The cleaned path.
*
* @throws \UnexpectedValueException
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::clean() instead.
*/
public static function clean($path, $ds = DIRECTORY_SEPARATOR)
{
if (!\is_string($path) && !empty($path)) {
throw new \UnexpectedValueException(
sprintf(
'%s() - $path is not a string',
__METHOD__
)
);
}
if ($path === null) {
@trigger_error(
sprintf(
'Path can not be null, in 6.0 it will throw an exception',
__METHOD__
),
E_USER_DEPRECATED
);
$path = '';
}
$path = trim($path);
if (empty($path)) {
$path = JPATH_ROOT;
} elseif (($ds === '\\') && substr($path, 0, 2) === '\\\\') {
// Remove double slashes and backslashes and convert all slashes and backslashes to DIRECTORY_SEPARATOR
// If dealing with a UNC path don't forget to prepend the path with a backslash.
$path = "\\" . preg_replace('#[/\\\\]+#', $ds, $path);
} else {
$path = preg_replace('#[/\\\\]+#', $ds, $path);
}
return $path;
}
/**
* Method to determine if script owns the path.
*
* @param string $path Path to check ownership.
*
* @return boolean True if the php script owns the path passed.
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::isOwner() instead.
*/
public static function isOwner($path)
{
$tmp = md5(Crypt::genRandomBytes());
$ssp = ini_get('session.save_path');
$jtp = JPATH_SITE . '/tmp';
// Try to find a writable directory
$dir = false;
foreach ([$jtp, $ssp, '/tmp'] as $currentDir) {
if (is_writable($currentDir)) {
$dir = $currentDir;
break;
}
}
if ($dir) {
$test = $dir . '/' . $tmp;
// Create the test file
$blank = '';
File::write($test, $blank, false);
// Test ownership
$return = (fileowner($test) == fileowner($path));
// Delete the test file
File::delete($test);
return $return;
}
return false;
}
/**
* Searches the directory paths for a given file.
*
* @param mixed $paths A path string or array of path strings to search in
* @param string $file The file name to look for.
*
* @return mixed The full path and file name for the target file, or boolean false if the file is not found in any of the paths.
*
* @since 1.7.0
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::find() instead.
*/
public static function find($paths, $file)
{
// Force to array
if (!\is_array($paths) && !($paths instanceof \Iterator)) {
settype($paths, 'array');
}
// Start looping through the path set
foreach ($paths as $path) {
// Get the path to the file
$fullname = $path . '/' . $file;
// Is the path based on a stream?
if (strpos($path, '://') === false) {
// Not a stream, so do a realpath() to avoid directory
// traversal attempts on the local file system.
// Needed for substr() later
$path = realpath($path);
$fullname = realpath($fullname);
}
/*
* The substr() check added to make sure that the realpath()
* results in a directory registered so that
* non-registered directories are not accessible via directory
* traversal attempts.
*/
if (file_exists($fullname) && substr($fullname, 0, \strlen($path)) === $path) {
return $fullname;
}
}
// Could not find the file in the set of paths
return false;
}
/**
* Resolves /./, /../ and multiple / in a string and returns the resulting absolute path, inspired by Flysystem
* Removes trailing slashes
*
* @param string $path A path to resolve
*
* @return string The resolved path
*
* @since 3.9.25
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::resolve() instead.
*/
public static function resolve($path)
{
$path = static::clean($path);
// Save start character for absolute path
$startCharacter = ($path[0] === DIRECTORY_SEPARATOR) ? DIRECTORY_SEPARATOR : '';
$parts = [];
foreach (explode(DIRECTORY_SEPARATOR, $path) as $part) {
switch ($part) {
case '':
case '.':
break;
case '..':
if (empty($parts)) {
throw new \Exception('Path is outside of the defined root');
}
array_pop($parts);
break;
default:
$parts[] = $part;
break;
}
}
return $startCharacter . implode(DIRECTORY_SEPARATOR, $parts);
}
/**
* Remove all references to root directory path and the system tmp path from a message
*
* @param string $message The message to be cleaned
* @param string $rootDirectory Optional root directory, defaults to JPATH_ROOT
*
* @return string
*
* @since 3.10.7
* @deprecated 4.4 will be removed in 6.0
* Use Joomla\Filesystem\Path::removeRoot() instead.
*/
public static function removeRoot($message, $rootDirectory = null)
{
if (empty($rootDirectory)) {
$rootDirectory = JPATH_ROOT;
}
$makePattern = static function ($dir) {
return '~' . str_replace('~', '\\~', preg_replace('~[/\\\\]+~', '[/\\\\\\\\]+', $dir)) . '~';
};
$replacements = [
$makePattern(static::clean($rootDirectory)) => '[ROOT]',
$makePattern(sys_get_temp_dir()) => '[TMP]',
];
return preg_replace(array_keys($replacements), array_values($replacements), $message);
}
}