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<?php
/*
* MIT License
*
* Copyright (c) 2022- Minteck
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
/////////////////////////////////////////////////////////////////
/// 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.mod.php //
// module for analyzing MOD Audio files //
// dependencies: NONE //
// ///
/////////////////////////////////////////////////////////////////
if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
exit;
}
class getid3_mod extends getid3_handler
{
/**
* @return bool
*/
public function Analyze() {
$info = &$this->getid3->info;
$this->fseek($info['avdataoffset']);
$fileheader = $this->fread(1088);
if (preg_match('#^IMPM#', $fileheader)) {
return $this->getITheaderFilepointer();
} elseif (preg_match('#^Extended Module#', $fileheader)) {
return $this->getXMheaderFilepointer();
} elseif (preg_match('#^.{44}SCRM#', $fileheader)) {
return $this->getS3MheaderFilepointer();
} elseif (preg_match('#^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)#', $fileheader)) {
return $this->getMODheaderFilepointer();
}
$this->error('This is not a known type of MOD file');
return false;
}
/**
* @return bool
*/
public function getMODheaderFilepointer() {
$info = &$this->getid3->info;
$this->fseek($info['avdataoffset'] + 1080);
$FormatID = $this->fread(4);
if (!preg_match('#^(M.K.|[5-9]CHN|[1-3][0-9]CH)$#', $FormatID)) {
$this->error('This is not a known type of MOD file');
return false;
}
$info['fileformat'] = 'mod';
$this->error('MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
return false;
}
/**
* @return bool
*/
public function getXMheaderFilepointer() {
$info = &$this->getid3->info;
$this->fseek($info['avdataoffset']);
$FormatID = $this->fread(15);
if (!preg_match('#^Extended Module$#', $FormatID)) {
$this->error('This is not a known type of XM-MOD file');
return false;
}
$info['fileformat'] = 'xm';
$this->error('XM-MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
return false;
}
/**
* @return bool
*/
public function getS3MheaderFilepointer() {
$info = &$this->getid3->info;
$this->fseek($info['avdataoffset'] + 44);
$FormatID = $this->fread(4);
if (!preg_match('#^SCRM$#', $FormatID)) {
$this->error('This is not a ScreamTracker MOD file');
return false;
}
$info['fileformat'] = 's3m';
$this->error('ScreamTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
return false;
}
/**
* @return bool
*/
public function getITheaderFilepointer() {
$info = &$this->getid3->info;
$this->fseek($info['avdataoffset']);
$FormatID = $this->fread(4);
if (!preg_match('#^IMPM$#', $FormatID)) {
$this->error('This is not an ImpulseTracker MOD file');
return false;
}
$info['fileformat'] = 'it';
$this->error('ImpulseTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
return false;
}
}
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