vendor/getid3/module.audio-video.swf.php

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<?php

/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  available at https://github.com/JamesHeinrich/getID3       //
//            or https://www.getid3.org                        //
//            or http://getid3.sourceforge.net                 //
//  see readme.txt for more details                            //
/////////////////////////////////////////////////////////////////
//                                                             //
// module.audio-video.swf.php                                  //
// module for analyzing Shockwave Flash files                  //
// dependencies: NONE                                          //
//                                                            ///
/////////////////////////////////////////////////////////////////

if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
	exit;
}

class getid3_swf extends getid3_handler
{
	public $ReturnAllTagData = false;

	/**
	 * @return bool
	 */
	public function Analyze() {
		$info = &$this->getid3->info;

		$info['fileformat']          = 'swf';
		$info['video']['dataformat'] = 'swf';

		// http://www.openswf.org/spec/SWFfileformat.html

		$this->fseek($info['avdataoffset']);

		$SWFfileData = $this->fread($info['avdataend'] - $info['avdataoffset']); // 8 + 2 + 2 + max(9) bytes NOT including Frame_Size RECT data

		$info['swf']['header']['signature']  = substr($SWFfileData, 0, 3);
		switch ($info['swf']['header']['signature']) {
			case 'FWS':
				$info['swf']['header']['compressed'] = false;
				break;

			case 'CWS':
				$info['swf']['header']['compressed'] = true;
				break;

			default:
				$this->error('Expecting "FWS" or "CWS" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['swf']['header']['signature']).'"');
				unset($info['swf']);
				unset($info['fileformat']);
				return false;
		}
		$info['swf']['header']['version'] = getid3_lib::LittleEndian2Int(substr($SWFfileData, 3, 1));
		$info['swf']['header']['length']  = getid3_lib::LittleEndian2Int(substr($SWFfileData, 4, 4));

		if ($info['swf']['header']['compressed']) {
			$SWFHead     = substr($SWFfileData, 0, 8);