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Current File : /var/www/web032/htdocs/cms/libraries/vendor/joomla/filesystem/src/Folder.php
<?php
/**
 * Part of the Joomla Framework Filesystem Package
 *
 * @copyright  Copyright (C) 2005 - 2020 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Filesystem;

use Joomla\Filesystem\Exception\FilesystemException;

/**
 * A Folder handling class
 *
 * @since  1.0
 */
abstract class Folder
{
	/**
	 * Copy a folder.
	 *
	 * @param   string   $src         The path to the source folder.
	 * @param   string   $dest        The path to the destination folder.
	 * @param   string   $path        An optional base path to prefix to the file names.
	 * @param   boolean  $force       Force copy.
	 * @param   boolean  $useStreams  Optionally force folder/file overwrites.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function copy($src, $dest, $path = '', $force = false, $useStreams = false)
	{
		@set_time_limit(ini_get('max_execution_time'));

		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		// Eliminate trailing directory separators, if any
		$src  = rtrim($src, \DIRECTORY_SEPARATOR);
		$dest = rtrim($dest, \DIRECTORY_SEPARATOR);

		if (!is_dir(Path::clean($src)))
		{
			throw new FilesystemException('Source folder not found', -1);
		}

		if (is_dir(Path::clean($dest)) && !$force)
		{
			throw new FilesystemException('Destination folder not found', -1);
		}

		// Make sure the destination exists
		if (!self::create($dest))
		{
			throw new FilesystemException('Cannot create destination folder', -1);
		}

		if (!($dh = @opendir($src)))
		{
			throw new FilesystemException('Cannot open source folder', -1);
		}

		// Walk through the directory copying files and recursing into folders.
		while (($file = readdir($dh)) !== false)
		{
			$sfid = $src . '/' . $file;
			$dfid = $dest . '/' . $file;

			switch (filetype($sfid))
			{
				case 'dir':
					if ($file != '.' && $file != '..')
					{
						$ret = self::copy($sfid, $dfid, null, $force, $useStreams);

						if ($ret !== true)
						{
							return $ret;
						}
					}

					break;

				case 'file':
					if ($useStreams)
					{
						Stream::getStream()->copy($sfid, $dfid);
					}
					else
					{
						if (!@copy($sfid, $dfid))
						{
							throw new FilesystemException('Copy file failed', -1);
						}
					}

					break;
			}
		}

		return true;
	}

	/**
	 * Create a folder -- and all necessary parent folders.
	 *
	 * @param   string   $path  A path to create from the base path.
	 * @param   integer  $mode  Directory permissions to set for folders created. 0755 by default.
	 *
	 * @return  boolean  True if successful.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 */
	public static function create($path = '', $mode = 0755)
	{
		static $nested = 0;

		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Check if parent dir exists
		$parent = \dirname($path);

		if (!is_dir(Path::clean($parent)))
		{
			// Prevent infinite loops!
			$nested++;

			if (($nested > 20) || ($parent == $path))
			{
				throw new FilesystemException(__METHOD__ . ': Infinite loop detected');
			}

			try
			{
				// Create the parent directory
				if (self::create($parent, $mode) !== true)
				{
					// Folder::create throws an error
					$nested--;

					return false;
				}
			}
			catch (FilesystemException $exception)
			{
				$nested--;

				throw $exception;
			}

			// OK, parent directory has been created
			$nested--;
		}

		// Check if dir already exists
		if (is_dir(Path::clean($path)))
		{
			return true;
		}

		// We need to get and explode the open_basedir paths
		$obd = ini_get('open_basedir');

		// If open_basedir is set we need to get the open_basedir that the path is in
		if ($obd != null)
		{
			if (\defined('PHP_WINDOWS_VERSION_MAJOR'))
			{
				$obdSeparator = ';';
			}
			else
			{
				$obdSeparator = ':';
			}

			// Create the array of open_basedir paths
			$obdArray  = explode($obdSeparator, $obd);
			$inBaseDir = false;

			// Iterate through open_basedir paths looking for a match
			foreach ($obdArray as $test)
			{
				$test = Path::clean($test);

				if (strpos($path, $test) === 0 || strpos($path, realpath($test)) === 0)
				{
					$inBaseDir = true;

					break;
				}
			}

			if ($inBaseDir == false)
			{
				// Throw a FilesystemException because the path to be created is not in open_basedir
				throw new FilesystemException(__METHOD__ . ': Path not in open_basedir paths');
			}
		}

		// First set umask
		$origmask = @umask(0);

		// Create the path
		if (!$ret = @mkdir($path, $mode))
		{
			@umask($origmask);

			throw new FilesystemException(__METHOD__ . ': Could not create directory.  Path: ' . $path);
		}

		// Reset umask
		@umask($origmask);

		return $ret;
	}

	/**
	 * Delete a folder.
	 *
	 * @param   string  $path  The path to the folder to delete.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.0
	 * @throws  FilesystemException
	 * @throws  \UnexpectedValueException
	 */
	public static function delete($path)
	{
		@set_time_limit(ini_get('max_execution_time'));

		// Sanity check
		if (!$path)
		{
			// Bad programmer! Bad Bad programmer!
			throw new FilesystemException(__METHOD__ . ': You can not delete a base directory.');
		}

		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is this really a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(sprintf('%1$s: Path is not a folder. Path: %2$s', __METHOD__, $path));
		}

		// Remove all the files in folder if they exist; disable all filtering
		$files = self::files($path, '.', false, true, array(), array());

		if (!empty($files))
		{
			if (File::delete($files) !== true)
			{
				// File::delete throws an error
				return false;
			}
		}

		// Remove sub-folders of folder; disable all filtering
		$folders = self::folders($path, '.', false, true, array(), array());

		foreach ($folders as $folder)
		{
			if (is_link($folder))
			{
				// Don't descend into linked directories, just delete the link.
				if (File::delete($folder) !== true)
				{
					// File::delete throws an error
					return false;
				}
			}
			elseif (self::delete($folder) !== true)
			{
				// Folder::delete throws an error
				return false;
			}
		}

		// In case of restricted permissions we zap it one way or the other as long as the owner is either the webserver or the ftp.
		if (@rmdir($path))
		{
			return true;
		}

		throw new FilesystemException(sprintf('%1$s: Could not delete folder. Path: %2$s', __METHOD__, $path));
	}

	/**
	 * Moves a folder.
	 *
	 * @param   string   $src         The path to the source folder.
	 * @param   string   $dest        The path to the destination folder.
	 * @param   string   $path        An optional base path to prefix to the file names.
	 * @param   boolean  $useStreams  Optionally use streams.
	 *
	 * @return  string|boolean  Error message on false or boolean true on success.
	 *
	 * @since   1.0
	 */
	public static function move($src, $dest, $path = '', $useStreams = false)
	{
		if ($path)
		{
			$src  = Path::clean($path . '/' . $src);
			$dest = Path::clean($path . '/' . $dest);
		}

		if (!is_dir(Path::clean($src)))
		{
			return 'Cannot find source folder';
		}

		if (is_dir(Path::clean($dest)))
		{
			return 'Folder already exists';
		}

		if ($useStreams)
		{
			Stream::getStream()->move($src, $dest);

			return true;
		}

		if (!@rename($src, $dest))
		{
			return 'Rename failed';
		}

		return true;
	}

	/**
	 * Utility function to read the files in a folder.
	 *
	 * @param   string   $path           The path of the folder to read.
	 * @param   string   $filter         A filter for file names.
	 * @param   mixed    $recurse        True to recursively search into sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full           True to return the full path to the file.
	 * @param   array    $exclude        Array with names of files which should not be shown in the result.
	 * @param   array    $excludeFilter  Array of filter to exclude
	 *
	 * @return  array  Files in the given folder.
	 *
	 * @since   1.0
	 * @throws  \UnexpectedValueException
	 */
	public static function files($path, $filter = '.', $recurse = false, $full = false, $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX'),
		$excludeFilter = array('^\..*', '.*~')
	)
	{
		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is the path a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(sprintf('%1$s: Path is not a folder. Path: %2$s', __METHOD__, $path));
		}

		// Compute the excludefilter string
		if (\count($excludeFilter))
		{
			$excludeFilterString = '/(' . implode('|', $excludeFilter) . ')/';
		}
		else
		{
			$excludeFilterString = '';
		}

		// Get the files
		$arr = self::_items($path, $filter, $recurse, $full, $exclude, $excludeFilterString, true);

		// Sort the files
		asort($arr);

		return array_values($arr);
	}

	/**
	 * Utility function to read the folders in a folder.
	 *
	 * @param   string   $path           The path of the folder to read.
	 * @param   string   $filter         A filter for folder names.
	 * @param   mixed    $recurse        True to recursively search into sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full           True to return the full path to the folders.
	 * @param   array    $exclude        Array with names of folders which should not be shown in the result.
	 * @param   array    $excludeFilter  Array with regular expressions matching folders which should not be shown in the result.
	 *
	 * @return  array  Folders in the given folder.
	 *
	 * @since   1.0
	 * @throws  \UnexpectedValueException
	 */
	public static function folders($path, $filter = '.', $recurse = false, $full = false, $exclude = array('.svn', 'CVS', '.DS_Store', '__MACOSX'),
		$excludeFilter = array('^\..*')
	)
	{
		// Check to make sure the path valid and clean
		$path = Path::clean($path);

		// Is the path a folder?
		if (!is_dir($path))
		{
			throw new \UnexpectedValueException(sprintf('%1$s: Path is not a folder. Path: %2$s', __METHOD__, $path));
		}

		// Compute the excludefilter string
		if (\count($excludeFilter))
		{
			$excludeFilterString = '/(' . implode('|', $excludeFilter) . ')/';
		}
		else
		{
			$excludeFilterString = '';
		}

		// Get the folders
		$arr = self::_items($path, $filter, $recurse, $full, $exclude, $excludeFilterString, false);

		// Sort the folders
		asort($arr);

		return array_values($arr);
	}

	/**
	 * Function to read the files/folders in a folder.
	 *
	 * @param   string   $path                 The path of the folder to read.
	 * @param   string   $filter               A filter for file names.
	 * @param   mixed    $recurse              True to recursively search into sub-folders, or an integer to specify the maximum depth.
	 * @param   boolean  $full                 True to return the full path to the file.
	 * @param   array    $exclude              Array with names of files which should not be shown in the result.
	 * @param   string   $excludeFilterString  Regexp of files to exclude
	 * @param   boolean  $findfiles            True to read the files, false to read the folders
	 *
	 * @return  array  Files.
	 *
	 * @since   1.0
	 */
	protected static function _items($path, $filter, $recurse, $full, $exclude, $excludeFilterString, $findfiles)
	{
		@set_time_limit(ini_get('max_execution_time'));

		$arr = array();

		// Read the source directory
		if (!($handle = @opendir($path)))
		{
			return $arr;
		}

		while (($file = readdir($handle)) !== false)
		{
			if ($file != '.' && $file != '..' && !\in_array($file, $exclude)
				&& (empty($excludeFilterString) || !preg_match($excludeFilterString, $file)))
			{
				// Compute the fullpath
				$fullpath = Path::clean($path . '/' . $file);

				// Compute the isDir flag
				$isDir = is_dir($fullpath);

				if (($isDir xor $findfiles) && preg_match("/$filter/", $file))
				{
					// (fullpath is dir and folders are searched or fullpath is not dir and files are searched) and file matches the filter
					if ($full)
					{
						// Full path is requested
						$arr[] = $fullpath;
					}
					else
					{
						// Filename is requested
						$arr[] = $file;
					}
				}

				if ($isDir && $recurse)
				{
					// Search recursively
					if (\is_int($recurse))
					{
						// Until depth 0 is reached
						$arr = array_merge($arr, self::_items($fullpath, $filter, $recurse - 1, $full, $exclude, $excludeFilterString, $findfiles));
					}
					else
					{
						$arr = array_merge($arr, self::_items($fullpath, $filter, $recurse, $full, $exclude, $excludeFilterString, $findfiles));
					}
				}
			}
		}

		closedir($handle);

		return $arr;
	}

	/**
	 * Lists folder in format suitable for tree display.
	 *
	 * @param   string   $path      The path of the folder to read.
	 * @param   string   $filter    A filter for folder names.
	 * @param   integer  $maxLevel  The maximum number of levels to recursively read, defaults to three.
	 * @param   integer  $level     The current level, optional.
	 * @param   integer  $parent    Unique identifier of the parent folder, if any.
	 *
	 * @return  array  Folders in the given folder.
	 *
	 * @since   1.0
	 */
	public static function listFolderTree($path, $filter, $maxLevel = 3, $level = 0, $parent = 0)
	{
		$dirs = array();

		if ($level == 0)
		{
			$GLOBALS['_JFolder_folder_tree_index'] = 0;
		}

		if ($level < $maxLevel)
		{
			$folders = self::folders($path, $filter);

			// First path, index foldernames
			foreach ($folders as $name)
			{
				$id       = ++$GLOBALS['_JFolder_folder_tree_index'];
				$fullName = Path::clean($path . '/' . $name);
				$dirs[]   = array(
					'id'       => $id,
					'parent'   => $parent,
					'name'     => $name,
					'fullname' => $fullName,
					'relname'  => str_replace(JPATH_ROOT, '', $fullName),
				);
				$dirs2 = self::listFolderTree($fullName, $filter, $maxLevel, $level + 1, $id);
				$dirs  = array_merge($dirs, $dirs2);
			}
		}

		return $dirs;
	}

	/**
	 * Makes path name safe to use.
	 *
	 * @param   string  $path  The full path to sanitise.
	 *
	 * @return  string  The sanitised string.
	 *
	 * @since   1.0
	 */
	public static function makeSafe($path)
	{
		$regex = array('#[^A-Za-z0-9_\\\/\(\)\[\]\{\}\#\$\^\+\.\'~`!@&=;,-]#');

		return preg_replace($regex, '', $path);
	}
}

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