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<?php
/**
* @package akeebabackup
* @copyright Copyright (c)2006-2022 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace Akeeba\Backup\Admin\Model;
// Protect from unauthorized access
defined('_JEXEC') || die();
use Akeeba\Backup\Admin\Model\Mixin\ExclusionFilter;
use Akeeba\Engine\Factory;
use Akeeba\Engine\Platform;
use FOF40\Container\Container;
use FOF40\Model\Model;
/**
* File Filters model
*
* Handles the exclusion of files and directories
*/
class FileFilters extends Model
{
use ExclusionFilter;
public function __construct(Container $container, array $config)
{
parent::__construct($container, $config);
$this->knownFilterTypes = ['directories', 'files', 'skipdirs', 'skipfiles'];
}
/**
* Returns a listing of contained directories and files, as well as their exclusion status
*
* @param string $root The root directory
* @param string $node The subdirectory to scan
*
* @return array
*/
private function &get_listing($root, $node)
{
// Initialize the absolute directory root
$directory = substr($root, 0);
// Replace stock directory tags, like [SITEROOT]
$stock_dirs = Platform::getInstance()->get_stock_directories();
if (!empty($stock_dirs))
{
foreach ($stock_dirs as $key => $replacement)
{
$directory = str_replace($key, $replacement, $directory);
}
}
$directory = Factory::getFilesystemTools()->TranslateWinPath($directory);
// Clean and add the node
$node = Factory::getFilesystemTools()->TranslateWinPath($node);
// Just a directory separator is treated as no directory at all
if (($node == '/'))
{
$node = '';
}
// Trim leading and trailing slashes
$node = trim($node, '/');
// Add node to directory
if (!empty($node))
{
$directory .= '/' . $node;
}
// Add any required trailing slash to the node to be used below
if (!empty($node))
{
$node .= '/';
}
// Get a filters instance
$filters = Factory::getFilters();
// Get a listing of folders and process it
$folders = Factory::getFileLister()->getFolders($directory);
$folders_out = array();
if (!empty($folders))
{
asort($folders);
foreach ($folders as $folder)
{
$folder = Factory::getFilesystemTools()->TranslateWinPath($folder);
// Filter out files whose names result to an empty JSON representation
$json_folder = json_encode($folder);
$folder = json_decode($json_folder);
if (empty($folder))
{
continue;
}
$test = $node . $folder;
$status = array();
// Check dir/all filter (exclude)
$result = $filters->isFilteredExtended($test, $root, 'dir', 'all', $byFilter);
$status['directories'] = (!$result) ? 0 : (($byFilter == 'directories') ? 1 : 2);
// Check dir/content filter (skip_files)
$result = $filters->isFilteredExtended($test, $root, 'dir', 'content', $byFilter);
$status['skipfiles'] = (!$result) ? 0 : (($byFilter == 'skipfiles') ? 1 : 2);
// Check dir/children filter (skip_dirs)
$result = $filters->isFilteredExtended($test, $root, 'dir', 'children', $byFilter);
$status['skipdirs'] = (!$result) ? 0 : (($byFilter == 'skipdirs') ? 1 : 2);
$status['link'] = @is_link($directory . '/' . $folder);
// Add to output array
$folders_out[ $folder ] = $status;
}
}
unset($folders);
$folders = $folders_out;
// Get a listing of files and process it
$files = Factory::getFileLister()->getFiles($directory);
$files_out = array();
if (!empty($files))
{
asort($files);
foreach ($files as $file)
{
// Filter out files whose names result to an empty JSON representation
$json_file = json_encode($file);
$file = json_decode($json_file);
if (empty($file))
{
continue;
}
$test = $node . $file;
$status = [];
// Check file/all filter (exclude)
$result = $filters->isFilteredExtended($test, $root, 'file', 'all', $byFilter);
$status['files'] = (!$result) ? 0 : (($byFilter == 'files') ? 1 : 2);
$status['size'] = $this->formatSize(@filesize($directory . '/' . $file), 1);
$status['link'] = @is_link($directory . '/' . $file);
// Add to output array
$files_out[$file] = $status;
}
}
unset($files);
$files = $files_out;
// Return a compiled array
$retarray = array(
'folders' => $folders,
'files' => $files
);
return $retarray;
/* Return array format
* [array] :
* 'folders' [array] :
* (folder_name) => [array]:
* 'directories' => 0|1|2
* 'skipfiles' => 0|1|2
* 'skipdirs' => 0|1|2
* 'files' [array] :
* (file_name) => [array]:
* 'files' => 0|1|2
*
* Legend:
* 0 -> Not excluded
* 1 -> Excluded by the direct filter
* 2 -> Excluded by another filter (regex, api, an unknown plugin filter...)
*/
}
/**
* Glues the current directory crumbs and the child directory into a node string
*
* @param array|string $crumbs Breadcrumbs in array or JSON encoded array format
* @param string $child The child folder (relative to the root defined by crumbs)
*
* @return string The absolute node (path) of the $child
*/
private function glue_crumbs(&$crumbs, $child)
{
// Construct the full node
$node = '';
// Some servers do not decode the crumbs. I don't know why!
if (!is_array($crumbs) && (substr($crumbs, 0, 1) == '['))
{
$crumbs = @json_decode($crumbs);
if ($crumbs === false)
{
$crumbs = array();
}
}
if (!is_array($crumbs))
{
$crumbs = array();
}
array_walk($crumbs, function ($value, $index) {
if (in_array(trim($value), array('.', '..')))
{
throw new \InvalidArgumentException("Unacceptable folder crumbs");
}
});
if ((stristr($child, '/..') !== false) || (stristr($child, '\..') !== false))
{
throw new \InvalidArgumentException("Unacceptable child folder");
}
if (!empty($crumbs))
{
$node = implode('/', $crumbs);
}
if (!empty($node))
{
$node .= '/';
}
if (!empty($child))
{
$node .= $child;
}
return $node;
}
/**
* Returns an array with the listing and filter status of a directory
*
* @param string $root Root directory
* @param array|string $crumbs Breadcrumbs in array or JSON encoded array format, defining the parent directory
* @param string $child The child directory we want to scan
*
* @return array
*/
public function make_listing($root, $crumbs = [], $child = '')
{
// Construct the full node
$node = $this->glue_crumbs($crumbs, $child);
// Create the new crumbs
if (!is_array($crumbs))
{
$crumbs = array();
}
if (!empty($child))
{
$crumbs[] = $child;
}
// Get listing with the filter info
$listing = $this->get_listing($root, $node);
// Assemble the array
$listing['root'] = $root;
$listing['crumbs'] = $crumbs;
return $listing;
}
/**
* Toggle a filter
*
* @param string $root Root directory
* @param array $crumbs Components of the current directory relative to the root
* @param string $item The child item of the current directory we want to toggle the filter for
* @param string $filter The name of the filter to apply (directories, skipfiles, skipdirs, files)
*
* @return array
*/
public function toggle($root, $crumbs, $item, $filter)
{
$node = $this->glue_crumbs($crumbs, $item);
return $this->applyExclusionFilter($filter, $root, $node, 'toggle');
}
/**
* Set a filter
*
* @param string $root Root directory
* @param array $crumbs Components of the current directory relative to the root
* @param string $item The child item of the current directory we want to set the filter for
* @param string $filter The name of the filter to apply (directories, skipfiles, skipdirs, files)
*
* @return array
*/
public function setFilter($root, $crumbs, $item, $filter)
{
$node = $this->glue_crumbs($crumbs, $item);
return $this->applyExclusionFilter($filter, $root, $node, 'set');
}
/**
* Remove a filter
*
* @param string $root Root directory
* @param array $crumbs Components of the current directory relative to the root
* @param string $item The child item of the current directory we want to remove the filter for
* @param string $filter The name of the filter to apply (directories, skipfiles, skipdirs, files)
*
* @return array
*/
public function remove($root, $crumbs, $item, $filter)
{
$node = $this->glue_crumbs($crumbs, $item);
return $this->applyExclusionFilter($filter, $root, $node, 'remove');
}
/**
* Swap a filter
*
* @param string $root Root directory
* @param array $crumbs Components of the current directory relative to the root
* @param string $item The child item of the current directory we want to set the filter for
* @param string $filter The name of the filter to apply (directories, skipfiles, skipdirs, files)
*
* @return array
*/
public function swap($root, $crumbs, $old_item, $new_item, $filter)
{
$new_node = $this->glue_crumbs($crumbs, $new_item);
$old_node = $this->glue_crumbs($crumbs, $old_item);
return $this->applyExclusionFilter($filter, $root, $new_node, 'swap', $old_node);
}
/**
* Retrieves the filters as an array. Used for the tabular filter editor.
*
* @param string $root The root node to search filters on
*
* @return array A collection of hash arrays containing node and type for each filtered element
*/
public function &get_filters($root)
{
return $this->getTabularFilters($root);
}
/**
* Resets the filters
*
* @param string $root Root directory
*
* @return array
*/
public function resetFilters($root)
{
$this->resetAllFilters($root);
return $this->make_listing($root);
}
/**
* Handles a request coming in through AJAX. Basically, this is a simple proxy to the model methods.
*
* @return array
*/
public function doAjax()
{
$action = $this->getState('action');
$verb = array_key_exists('verb', get_object_vars($action)) ? $action->verb : null;
if (!array_key_exists('crumbs', get_object_vars($action)))
{
$action->crumbs = '';
}
$ret_array = array();
switch ($verb)
{
// Return a listing for the normal view
case 'list':
$ret_array = $this->make_listing($action->root, $action->crumbs, $action->node);
break;
// Toggle a filter's state
case 'toggle':
$ret_array = $this->toggle($action->root, $action->crumbs, $action->node, $action->filter);
break;
// Set a filter (used by the editor)
case 'set':
$ret_array = $this->setFilter($action->root, $action->crumbs, $action->node, $action->filter);
break;
// Swap a filter (used by the editor)
case 'swap':
$ret_array =
$this->swap($action->root, $action->crumbs, $action->old_node, $action->new_node, $action->filter);
break;
case 'tab':
$ret_array = $this->get_filters($action->root);
break;
// Reset filters
case 'reset':
$ret_array = $this->resetFilters($action->root);
break;
}
return $ret_array;
}
/**
* Format the size of the file (given in bytes) to something human readable, e.g. 123 MB
*
* @param int $bytes The file size in bytes
* @param int $decimals How many decimals you want (default: 0)
*
* @return string The human-readable, formatted size
*/
private function formatSize($bytes, $decimals = 0)
{
$bytes = empty($bytes) ? 0 : (int) $bytes;
$format = empty($decimals) ? '%0u' : '%0.' . $decimals . 'f';
$uom = [
'TB' => 1048576 * 1048576,
'GB' => 1024 * 1048576,
'MB' => 1048576,
'KB' => 1024,
'B' => 1,
];
// Whole bytes cannot have decimal positions
if (!empty($decimals))
{
unset($uom['B']);
}
foreach ($uom as $unit => $byteSize)
{
if (floatval($bytes) >= $byteSize)
{
return sprintf($format, $bytes / $byteSize) . ' ' . $unit;
}
}
// If the number is either too big or too small,
return sprintf('%0u B', $bytes);
}
}