<?php
/**
* @brief File Storage Extension: Image proxy cache
* @author <a href='https://www.invisioncommunity.com'>Invision Power Services, Inc.</a>
* @copyright (c) Invision Power Services, Inc.
* @license https://www.invisioncommunity.com/legal/standards/
* @package Invision Community
* @since 7 Nov 2016
*/
namespace IPS\core\extensions\core\FileStorage;
/* To prevent PHP errors (extending class does not exist) revealing path */
if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
{
header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
exit;
}
/**
* File Storage Extension: Image proxy cache
*/
class _Imageproxycache
{
/**
* Count stored files
*
* @return int
*/
public function count()
{
return \IPS\Db::i()->select( 'COUNT(*)', 'core_image_proxy' )->first();
}
/**
* Move stored files
*
* @param int $offset This will be sent starting with 0, increasing to get all files stored by this extension
* @param int $storageConfiguration New storage configuration ID
* @param int|NULL $oldConfiguration Old storage configuration ID
* @throws \UnderflowException When file record doesn't exist. Indicating there are no more files to move
* @return void|int An offset integer to use on the next cycle, or nothing
*/
public function move( $offset, $storageConfiguration, $oldConfiguration=NULL )
{
$cache = \IPS\Db::i()->select( '*', 'core_image_proxy', array(), 'md5_url', array( $offset, 1 ) )->first();
/* Don't move a file if it doesn't have a filename */
if( $cache['location'] === NULL )
{
return;
}
try
{
$file = \IPS\File::get( $oldConfiguration ?: 'core_Imageproxycache', $cache['location'] )->move( $storageConfiguration );
if ( (string) $file != $cache['location'] )
{
\IPS\Db::i()->update( 'core_image_proxy', array( 'location' => (string) $file ), array( 'md5_url=?', $cache['md5_url'] ) );
}
}
catch( \Exception $e )
{
/* Any issues are logged and the \IPS\Db::i()->update not run as the exception is thrown */
}
}
/**
* Check if a file is valid
*
* @param string $file The file path to check
* @return bool
*/
public function isValidFile( $file )
{
try
{
\IPS\Db::i()->select( '*', 'core_image_proxy', array( 'location=?', (string) $file ) )->first();
return TRUE;
}
catch ( \UnderflowException $e )
{
return FALSE;
}
}
/**
* Delete all stored files
*
* @return void
*/
public function delete()
{
foreach( \IPS\Db::i()->select( '*', 'core_image_proxy', 'location IS NOT NULL' ) as $cache )
{
try
{
\IPS\File::get( 'core_Imageproxycache', $cache['location'] )->delete();
}
catch( \Exception $e ){}
}
}
/**
* Fix all URLs
*
* @param int $offset This will be sent starting with 0, increasing to get all files stored by this extension
* @return void
*/
public function fixUrls( $offset )
{
$cache = \IPS\Db::i()->select( '*', 'core_image_proxy', array(), 'md5_url', array( $offset, 1 ) )->first();
try
{
if ( $new = \IPS\File::repairUrl( $cache['location'] ) )
{
\IPS\Db::i()->update( 'core_image_proxy', array( 'location' => (string) $new ), array( 'md5_url=?', $cache['location'] ) );
}
}
catch( \Exception $e )
{
/* Any issues are logged and the \IPS\Db::i()->update not run as the exception is thrown */
}
}
}