www/plugins-dist/medias/lib/getid3/module.audio.mod.php

   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.audio.mod.php                                        //
  12 // module for analyzing MOD Audio files                        //
  13 // dependencies: NONE                                          //
  14 //                                                            ///
  15 /////////////////////////////////////////////////////////////////
  16
  17 if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
  18         exit;
  19 }
  20
  21 class getid3_mod extends getid3_handler
  22 {
  23         /**
  24          * @return bool
  25          */
  26         public function Analyze() {
  27                 $info = &$this->getid3->info;
  28                 $this->fseek($info['avdataoffset']);
  29                 $fileheader = $this->fread(1088);
  30                 if (preg_match('#^IMPM#', $fileheader)) {
  31                         return $this->getITheaderFilepointer();
  32                 } elseif (preg_match('#^Extended Module#', $fileheader)) {
  33                         return $this->getXMheaderFilepointer();
  34                 } elseif (preg_match('#^.{44}SCRM#', $fileheader)) {
  35                         return $this->getS3MheaderFilepointer();
  36                 } elseif (preg_match('#^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)#', $fileheader)) {
  37                         return $this->getMODheaderFilepointer();
  38                 }
  39                 $this->error('This is not a known type of MOD file');
  40                 return false;
  41         }
  42
  43         /**
  44          * @return bool
  45          */
  46         public function getMODheaderFilepointer() {
  47                 $info = &$this->getid3->info;
  48                 $this->fseek($info['avdataoffset'] + 1080);
  49                 $FormatID = $this->fread(4);
  50                 if (!preg_match('#^(M.K.|[5-9]CHN|[1-3][0-9]CH)$#', $FormatID)) {
  51                         $this->error('This is not a known type of MOD file');
  52                         return false;
  53                 }
  54
  55                 $info['fileformat'] = 'mod';
  56
  57                 $this->error('MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  58                 return false;
  59         }
  60
  61         /**
  62          * @return bool
  63          */
  64         public function getXMheaderFilepointer() {
  65                 $info = &$this->getid3->info;
  66                 $this->fseek($info['avdataoffset']);
  67                 $FormatID = $this->fread(15);
  68                 if (!preg_match('#^Extended Module$#', $FormatID)) {
  69                         $this->error('This is not a known type of XM-MOD file');
  70                         return false;
  71                 }
  72
  73                 $info['fileformat'] = 'xm';
  74
  75                 $this->error('XM-MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  76                 return false;
  77         }
  78
  79         /**
  80          * @return bool
  81          */
  82         public function getS3MheaderFilepointer() {
  83                 $info = &$this->getid3->info;
  84                 $this->fseek($info['avdataoffset'] + 44);
  85                 $FormatID = $this->fread(4);
  86                 if (!preg_match('#^SCRM$#', $FormatID)) {
  87                         $this->error('This is not a ScreamTracker MOD file');
  88                         return false;
  89                 }
  90
  91                 $info['fileformat'] = 's3m';
  92
  93                 $this->error('ScreamTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  94                 return false;
  95         }
  96
  97         /**
  98          * @return bool
  99          */
 100         public function getITheaderFilepointer() {
 101                 $info = &$this->getid3->info;
 102                 $this->fseek($info['avdataoffset']);
 103                 $FormatID = $this->fread(4);
 104                 if (!preg_match('#^IMPM$#', $FormatID)) {
 105                         $this->error('This is not an ImpulseTracker MOD file');
 106                         return false;
 107                 }
 108
 109                 $info['fileformat'] = 'it';
 110
 111                 $this->error('ImpulseTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
 112                 return false;
 113         }
 114
 115 }