library/getid3/module.misc.exe.php

0001 <?php
0002 /////////////////////////////////////////////////////////////////
0003 /// getID3() by James Heinrich <info@getid3.org>               //
0004 //  available at http://getid3.sourceforge.net                 //
0005 //            or http://www.getid3.org                         //
0006 //          also https://github.com/JamesHeinrich/getID3       //
0007 /////////////////////////////////////////////////////////////////
0008 // See readme.txt for more details                             //
0009 /////////////////////////////////////////////////////////////////
0010 //                                                             //
0011 // module.misc.exe.php                                         //
0012 // module for analyzing EXE files                              //
0013 // dependencies: NONE                                          //
0014 //                                                            ///
0015 /////////////////////////////////////////////////////////////////
0016
0017
0018 class getid3_exe extends getid3_handler
0019 {
0020
0021   public function Analyze() {
0022     $info = &$this->getid3->info;
0023
0024     $this->fseek($info['avdataoffset']);
0025     $EXEheader = $this->fread(28);
0026
0027     $magic = 'MZ';
0028     if (substr($EXEheader, 0, 2) != $magic) {
0029       $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($EXEheader, 0, 2)).'"';
0030       return false;
0031     }
0032
0033     $info['fileformat'] = 'exe';
0034     $info['exe']['mz']['magic'] = 'MZ';
0035
0036     $info['exe']['mz']['raw']['last_page_size']          = getid3_lib::LittleEndian2Int(substr($EXEheader,  2, 2));
0037     $info['exe']['mz']['raw']['page_count']              = getid3_lib::LittleEndian2Int(substr($EXEheader,  4, 2));
0038     $info['exe']['mz']['raw']['relocation_count']        = getid3_lib::LittleEndian2Int(substr($EXEheader,  6, 2));
0039     $info['exe']['mz']['raw']['header_paragraphs']       = getid3_lib::LittleEndian2Int(substr($EXEheader,  8, 2));
0040     $info['exe']['mz']['raw']['min_memory_paragraphs']   = getid3_lib::LittleEndian2Int(substr($EXEheader, 10, 2));
0041     $info['exe']['mz']['raw']['max_memory_paragraphs']   = getid3_lib::LittleEndian2Int(substr($EXEheader, 12, 2));
0042     $info['exe']['mz']['raw']['initial_ss']              = getid3_lib::LittleEndian2Int(substr($EXEheader, 14, 2));
0043     $info['exe']['mz']['raw']['initial_sp']              = getid3_lib::LittleEndian2Int(substr($EXEheader, 16, 2));
0044     $info['exe']['mz']['raw']['checksum']                = getid3_lib::LittleEndian2Int(substr($EXEheader, 18, 2));
0045     $info['exe']['mz']['raw']['cs_ip']                   = getid3_lib::LittleEndian2Int(substr($EXEheader, 20, 4));
0046     $info['exe']['mz']['raw']['relocation_table_offset'] = getid3_lib::LittleEndian2Int(substr($EXEheader, 24, 2));
0047     $info['exe']['mz']['raw']['overlay_number']          = getid3_lib::LittleEndian2Int(substr($EXEheader, 26, 2));
0048
0049     $info['exe']['mz']['byte_size']          = (($info['exe']['mz']['raw']['page_count'] - 1)) * 512 + $info['exe']['mz']['raw']['last_page_size'];
0050     $info['exe']['mz']['header_size']        = $info['exe']['mz']['raw']['header_paragraphs'] * 16;
0051     $info['exe']['mz']['memory_minimum']     = $info['exe']['mz']['raw']['min_memory_paragraphs'] * 16;
0052     $info['exe']['mz']['memory_recommended'] = $info['exe']['mz']['raw']['max_memory_paragraphs'] * 16;
0053
0054 $info['error'][] = 'EXE parsing not enabled in this version of getID3() ['.$this->getid3->version().']';
0055 return false;
0056
0057   }
0058
0059 }