<?php
/**
* @brief Multiple Redirector
* @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 3 Apr 2013
*/
namespace IPS\Helpers;
/* 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;
}
/**
* Multiple Redirector
*/
class _MultipleRedirect
{
/**
* @brief URL
*/
protected $url = '';
/**
* @brief Output
*/
protected $output = '';
/**
* @brief Prevents the final redirect
*/
public $noFinalRedirect = FALSE;
/**
* Constructor
*
* @param string $url The URL where the redirector takes place
* @param callback $callback The function to run - should return an array with three elements, or NULL to indicate the process is finished or a string to display -
* @li Data to pass back to itself for the next "step"
* @li A message to display to the user
* @li [Optional] A number between 1 and 100 for a progress bar
* @param callback $finished Code to run when finished
* @param bool $finalRedirect If FALSE, will not force a real redirect to the finished method
* @return void
*/
public function __construct( $url, $callback, $finished, $finalRedirect=TRUE )
{
\IPS\Output::i()->jsFiles = array_merge( \IPS\Output::i()->jsFiles, \IPS\Output::i()->js( 'global_core.js', 'core', 'global' ) );
$this->url = $url;
$key = 'mr-' . md5( $url );
if ( isset( \IPS\Request::i()->mr ) and ! isset( \IPS\Request::i()->mr_continue ) )
{
if ( isset( \IPS\Request::i()->_mrReset ) )
{
$data = NULL;
$iteration = 1;
}
elseif ( isset( $_SESSION[ $key ] ) )
{
$data = json_decode( $_SESSION[ $key ], TRUE );
$iteration = intval( \IPS\Request::i()->mr ) + 1;
}
elseif ( !is_numeric( \IPS\Request::i()->mr ) and $base64Decoded = @base64_decode( \IPS\Request::i()->mr ) )
{
$data = json_decode( urldecode( $base64Decoded ), TRUE );
$iteration = 1;
}
else
{
$data = NULL;
$iteration = 1;
}
if ( $data === '__done' )
{
unset( $_SESSION[ $key ] );
call_user_func( $finished );
return;
}
try
{
$response = call_user_func( $callback, $data );
if ( $response === NULL )
{
unset( $_SESSION[ $key ] );
if ( !\IPS\Request::i()->isAjax() )
{
call_user_func( $finished );
return;
}
else
{
$_SESSION['mr-' . md5( $url ) ] = json_encode( $finalRedirect ? '__done' : '__done__' );
\IPS\Output::i()->json( $finalRedirect ? array( 'done' => true ) : array( 'close' => true ) );
}
}
elseif ( is_string( $response[0] ) )
{
$this->output = $response[0];
if ( \IPS\Request::i()->isAjax() )
{
\IPS\Output::i()->json( array( 'custom' => $response[0] ) );
}
}
else
{
$_SESSION['mr-' . md5( $url ) ] = json_encode( $response[0] );
if ( !\IPS\Request::i()->isAjax() )
{
\IPS\Output::i()->redirect( $this->url->setQueryString( 'mr', $iteration ), $response[1], 303, TRUE );
}
else
{
\IPS\Output::i()->json( $response );
}
}
}
catch ( \Exception $e )
{
if ( \IPS\IN_DEV )
{
\IPS\Output::i()->error( $e->getMessage() . ' ' . $e->getLine() . ' ' . str_replace( "\n", "<br>", $e->getTraceAsString() ), '1S111/1', 403, '' );
}
\IPS\Log::log( $e, 'multiredirect' );
\IPS\Output::i()->error( $e->getMessage(), '1S111/1', 403, '' );
}
}
}
/**
* Get Starting HTML
*
* @return string
*/
public function __toString()
{
return $this->output ?: \IPS\Theme::i()->getTemplate( 'global', 'core', 'global' )->multipleRedirect( $this->url, ( ( isset( \IPS\Request::i()->mr_continue ) and isset( \IPS\Request::i()->mr ) ) ? \IPS\Request::i()->mr : 0 ) );
}
}