1<?php
2
3/////////////////////////////////////////////////////////////////
4/// getID3() by James Heinrich <info@getid3.org>               //
5//  available at https://github.com/JamesHeinrich/getID3       //
6//            or https://www.getid3.org                        //
7//            or http://getid3.sourceforge.net                 //
8//  see readme.txt for more details                            //
9/////////////////////////////////////////////////////////////////
10//                                                             //
11// module.archive.efax.php                                     //
12// module for analyzing eFax files                             //
13// dependencies: NONE                                          //
14//                                                            ///
15/////////////////////////////////////////////////////////////////
16
17if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
18	exit;
19}
20
21class getid3_efax extends getid3_handler
22{
23	/**
24	 * @return bool
25	 */
26	public function Analyze() {
27		$info = &$this->getid3->info;
28
29		$this->fseek($info['avdataoffset']);
30		$efaxheader = $this->fread(1024);
31
32		$info['efax']['header']['magic'] = substr($efaxheader, 0, 2);
33		if ($info['efax']['header']['magic'] != "\xDC\xFE") {
34			$this->error('Invalid eFax byte order identifier (expecting DC FE, found '.getid3_lib::PrintHexBytes($info['efax']['header']['magic']).') at offset '.$info['avdataoffset']);
35			return false;
36		}
37		$info['fileformat'] = 'efax';
38
39		$info['efax']['header']['filesize'] = getid3_lib::LittleEndian2Int(substr($efaxheader, 2, 4));
40		if ($info['efax']['header']['filesize'] != $info['filesize']) {
41			$this->error('Probable '.(($info['efax']['header']['filesize'] > $info['filesize']) ? 'truncated' : 'corrupt').' file, expecting '.$info['efax']['header']['filesize'].' bytes, found '.$info['filesize'].' bytes');
42		}
43		$info['efax']['header']['software1'] =                        rtrim(substr($efaxheader,  26, 32), "\x00");
44		$info['efax']['header']['software2'] =                        rtrim(substr($efaxheader,  58, 32), "\x00");
45		$info['efax']['header']['software3'] =                        rtrim(substr($efaxheader,  90, 32), "\x00");
46
47		$info['efax']['header']['pages']      = getid3_lib::LittleEndian2Int(substr($efaxheader, 198, 2));
48		$info['efax']['header']['data_bytes'] = getid3_lib::LittleEndian2Int(substr($efaxheader, 202, 4));
49
50		$this->error('eFax parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
51		return false;
52	}
53
54}
55