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<?php
/**
* @package FLEXIcontent
* @version 3.3
*
* @author Emmanuel Danan, Georgios Papadakis, Yannick Berges, others, see contributor page
* @link https://flexicontent.org
* @copyright Copyright © 2018, FLEXIcontent team, All Rights Reserved
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
*/
defined('_JEXEC') or die('Restricted access');
use Joomla\String\StringHelper;
use Joomla\Utilities\ArrayHelper;
require_once('base/base.php');
/**
* FLEXIcontent Component File Model
*
*/
class FlexicontentModelFile extends FCModelAdmin
{
/**
* Record name, (parent class property), this is used for: naming session data, XML file of class, etc
*
* @var string
*/
protected $name = 'file';
/**
* Record database table
*
* @var string
*/
var $records_dbtbl = null;
/**
* Record jtable name
*
* @var string
*/
var $records_jtable = null;
/**
* Record primary key
*
* @var int
*/
var $_id = null;
/**
* Record data
*
* @var object
*/
var $_record = null;
/**
* Events context to use during model FORM events and diplay PREPARE events triggering
*
* @var object
*/
var $events_context = null;
/**
* Flag to indicate adding new records with next available ordering (at the end),
* this is ignored if this record DB model does not have 'ordering'
*
* @var boolean
*/
var $useLastOrdering = false;
/**
* Plugin group used to trigger events
*
* @var boolean
*/
var $plugins_group = null;
/**
* Records real extension
*
* @var string
*/
var $extension_proxy = null;
/**
* Context to use for registering (language) associations
*
* @var string
*/
var $associations_context = false;
/**
* Array of supported state conditions of the record
*/
var $supported_conditions = array(
1 => 'FLEXI_PUBLISHED',
0 => 'FLEXI_UNPUBLISHED',
-2 => 'FLEXI_TRASHED',
);
/**
* Various record specific properties
*
*/
// ...
/**
* Constructor
*
* @since 3.3.0
*/
public function __construct($config = array())
{
parent::__construct($config);
$this->canManage = FlexicontentHelperPerm::getPerm()->CanFiles;
}
/**
* Legacy method to get the record
*
* @return object
*
* @since 1.0
*/
public function getFile($pk = null)
{
return parent::getRecord($pk);
}
/**
* Method to initialise the record data
*
* @param object $record The record being initialized
* @param boolean $initOnly If true then only a new record will be initialized without running the _afterLoad() method
*
* @return boolean True on success
*
* @since 1.5
*/
protected function _initRecord(&$record = null, $initOnly = false)
{
parent::_initRecord($record, $initOnly);
// Set some new record specific properties, note most properties already have proper values
// Either the DB default values (set by getTable() method) or the values set by _afterLoad() method
$record->id = 0;
$record->checked_out = 0;
$record->checked_out_time = '';
$this->_record = $record;
return true;
}
/**
* Legacy method to store the record, use save() instead
*
* @param array $data The form data.
*
* @return boolean True on success.
*
* @since 3.2.0
*/
public function store($data)
{
return parent::store($data);
}
/**
* Method to preprocess the form.
*
* @param JForm $form A JForm object.
* @param mixed $data The data expected for the form.
* @param string $plugins_group The name of the plugin group to import and trigger
*
* @return void
*
* @see JFormField
* @since 1.6
* @throws Exception if there is an error in the form event.
*/
protected function preprocessForm(JForm $form, $data, $plugins_group = null)
{
parent::preprocessForm($form, $data, $plugins_group);
}
/**
* Method to change the title & alias.
*
* @param integer $parent_id If applicable, the id of the parent (e.g. assigned category)
* @param string $alias The alias / name.
* @param string $title The title / label.
*
* @return array Contains the modified title and alias / name.
*
* @since 1.7
*/
protected function generateNewTitle($parent_id, $alias, $title)
{
// Alter the title & alias
$table = $this->getTable();
while ($table->load(array('filename' => $title)))
{
$title = StringHelper::increment($title);
}
return array($title, null);
}
/**
* Method to check if the user can edit the record
*
* @return boolean True on success
*
* @since 3.2.0
*/
public function canEdit($record = null, $user = null)
{
$record = $record ?: $this->_record;
$user = $user ?: JFactory::getUser();
$isOwner = $record && $user->id && $record->uploaded_by == $user->id;
if ($record->id && $record->estorage_fieldid < 0)
{
$app->enqueueMessage(JText::_( 'File is being moved to external storage, please edit later' ), 'warning');
return false;
}
$canupload = $user->authorise('flexicontent.uploadfiles', 'com_flexicontent');
$canedit = $user->authorise('flexicontent.editfile', 'com_flexicontent');
$caneditown = $user->authorise('flexicontent.editownfile', 'com_flexicontent') && $isOwner;
return !$record || !$record->id
? $canupload
: $canedit || $caneditown;
}
/**
* Method to check if the user can edit record 's state
*
* @return boolean True on success
*
* @since 3.2.0
*/
public function canEditState($record = null, $user = null)
{
$record = $record ?: $this->_record;
$user = $user ?: JFactory::getUser();
$isOwner = $record && $user->id && $record->uploaded_by == $user->id;
$canpublish = $user->authorise('flexicontent.publishfile', 'com_flexicontent');
$canpublishown = $user->authorise('flexicontent.publishownfile', 'com_flexicontent') && $isOwner;
return !$record || !$record->id
? false
: $canpublish || $canpublishown;
}
/**
* Method to check if the user can delete the record
*
* @return boolean True on success
*
* @since 3.2.0
*/
public function canDelete($record = null)
{
$record = $record ?: $this->_record;
$user = JFactory::getUser();
$isOwner = $record && $user->id && $record->uploaded_by == $user->id;
$candelete = $user->authorise('flexicontent.deletefile', 'com_flexicontent');
$candeleteown = $user->authorise('flexicontent.deleteownfile', 'com_flexicontent') && $isOwner;
return !$record || !$record->id
? false
: $candelete || $candeleteown;
}
/**
* Method to do some record / data preprocessing before call JTable::bind()
*
* Note. Typically called inside this MODEL 's store()
*
* @param object $record The record object
* @param array $data The new data array
*
* @since 3.2.0
*/
protected function _prepareBind($record, & $data)
{
// Call parent class bind preparation
parent::_prepareBind($record, $data);
}
/**
* Method to do some work after record has been stored
*
* Note. Typically called inside this MODEL 's store()
*
* @param object $record The record object
* @param array $data The new data array
*
* @since 3.2.0
*/
protected function _afterStore($record, & $data)
{
parent::_afterStore($record, $data);
}
/**
* Method to do some work after record has been loaded via JTable::load()
*
* Note. Typically called inside this MODEL 's store()
*
* @param object $record The record object
*
* @since 3.2.0
*/
protected function _afterLoad($record)
{
parent::_afterLoad($record);
}
/**
* START OF MODEL SPECIFIC METHODS
*/
/**
* Returns the size of a file without downloading it, or -1 if the file size could not be determined.
*
* @param $url - The location of the remote file to download. Cannot be null or empty.
*
* @return The size of the file referenced by $url,
* or -1 if the size could not be determined
* or -999 if there was an error
*/
function get_file_size_from_url($url, $retry = true)
{
$original_url = $url;
$retry = $retry === true ? 6 : 0;
// clear last error
$ignore_last_error = error_get_last();
try {
$headers = array('Location' => $url);
// Follow the Location headers until the actual file URL is known
while (isset($headers['Location']))
{
$url = is_array($headers['Location'])
? end($headers['Location'])
: $headers['Location'];
$headers = @ get_headers($url, 1);
// Check for get headers failing to execute
if ($headers === false)
{
$error = error_get_last();
$error_message = is_array($error) && isset($error['message'])
? $error['message']
: 'Error retrieving headers of URL';
$this->setError($error_message);
return -999;
}
// Check for bad response from server, e.g. not found 404 , or 403 no access
$n = 0;
while(isset($headers[$n]))
{
$code = (int) substr($headers[$n], 9, 3);
if ($code < 200 || $code >= 400 )
{
$this->setError($headers[$n]);
return -999;
}
$n++;
}
}
}
catch (RuntimeException $e) {
$this->setError($e->getMessage());
return -999; // indicate a fatal error
}
// Work-around with content length missing during 1st try, just retry once more
if (!isset($headers["Content-Length"]) && $retry)
{
return $this->get_file_size_from_url($original_url, --$retry);
}
$headers["Content-Length"] = is_array($headers["Content-Length"]) ? end($headers["Content-Length"]) : $headers["Content-Length"];
// Get file size, -1 indicates that the size could not be determined
return isset($headers["Content-Length"])
? $headers["Content-Length"]
: -1;
}
}