ファイルヘッダーに基づいてファイルタイプを検証する PHP コード

/**
* 検証ファイルタイプクラス
*
* @author Silver
* by bbs.it-home.org
*/
class FileTypeValidation
{
// ファイルタイプ、異なるヘッダー情報
private static $_fileFormats = Array(
'jp2' => '0000000C6A502020 ' , '0000002066747970',
'3gp5' => '0000001866747970',
'm4a' =>
'ico' =&g t; ,
'spl' => '00000100',
'vob' => '00000200',
'wk1' = > '0000020006040600',
'wk3' => '00001A0000100400',
'wk4' => '00001A000210 0400'、
'123' => '00001A00051004'、
 'qxd' => '00004D4D585052',
'mdf' => '0110',
'rgb' => 07',
'dss' => '02647373',
'dat' => '03',
'qph' => ' => '80000020031204',
'db4' => 'FFFE0000',
'a' => '、'dtd' =＆gt; => 'D0CF11E0A1B11AE1',
'nri' => '0E4E65726F49534F',
'wks' => '1100000053434341 ',
'ntf' => ' 4E49544630',
'nsf' => '4E45534D1A01',
'arc' => '5041434B',
'mkt; ; '1A45DFA393428288',
'ws' => '1D7D',
'tar.z' => '2112' ,
'lib' => '213C617263683E0A',
'msi' => '4B444D',
'dsp' => 73' ,
'午前中' = > '2321414D52',
'hdr' => '49536328',
'sav' => '25504446',
'hqx' => 9'、
'ログ' => '2A2A2A2020496E73',
'ivr' => '2E524D46',
'ra' => 2E7261FD00',
'au' => '646E732E',
'cat' => '300000004C664C65',
'asf' =>
うわー' => '3026B2758E66CF11',
'wmv' => '3026B2758E66 CF11',
'wri' => 'BE000000AB',
'psd' = > ' 38425053',
'sle' => '414376',
'asx' => '3C',
'dci' => '3C21646F63747970',
' ' => '3C3F786D6C2076657273696F6E3D',
'xml' => '3C3F786D6C20 76657273696F6E3D22312E30223F3E',
'msc' = > 'D0CF11E0 A1B11AE1',
'fm' => '3C4D616B65724669',
'mif' => 56657273696F6E20',
'gid' => '4C4E0200',
'dwg' => '41433130',
'syw' => 「、
」アビ' => '414F4C494E444558',
'aby' => '414F4C2046656564',
'idx' =>
'ind' => '414F4C494458 ',
'pfc' => '414F4C564D313030',
'vcf' => '424547494E3A5643',
'bin' => C4932323351',
'bmp' => '424D',
'dib' => '424F4F4B4D4F4249',
'tar.bz2' => 425A68',
'tbz2' => '425A68',
'rtd' => '43232B44A4434DA5',
'cbd' =>
'イソ' => '4344303031',
'clb' => '43505446494C45',
'cru' => t; '465753 ',
'ctf' => '436174616C6F6720',
'dms' => '5245564E554D3A2C',
'dvr' =>
'ifo ' => '445644',
'cdr' => '454E545259564344',
'mdi' => '4C56460 90D0AFF00 ',
'evtx' => '456C6646696C6500',
'qbb' => '45860 0000600',
' cpe' => '464C5 6'、
'あふ' => '464F524D00',
'eml' => '47494638',
'gx2' => ',
'sh3' => '4848474231',
'tif' => '= & gt;' 4d4d002b ',
'mp3' = & gt; koz '= & gt;' 4944330000000 ',
'crw' = & gt; ',
'lit' => '49545346',
』 chm' => '49545346',
'jar' => '5F27A889',
'jg' => '4A47040E000000',
'kgb' => '4B47425F61726368',
'shd' => '68490000',
'lnk' => '4C00000001140200',
'obj' => '80',
'pdb' => 'ACED000573720012',
'mar' => '4D41723000',
'dmp' => '504147454455',
'hdmp' => '4D444D5093A7',
'mls' => '4D563243',
'mmf' => '4D4D4D440000',
'nvram' => '4D52564E',
'ppz' => '4D534346',
'snp' => '4D534346',
'tlb' => '4D53465402000100',
'dvf' => '4D535F564F494345',
'msv' => '4D535F564F494345',
'mid' => '4D546864',
'midi' => '4D546864',
'dsn' => '4D56',
'com' => 'EB',
'dll' => '4D5A',
'drv' => '4D5A',
'exe' => '4D5A',
'pif' => '4D5A',
'qts' => '4D5A',
'qtx' => '4D5A',
'sys' => 'FFFFFFFF',
'acm' => '4D5A',
'ax' => '4D5A900003000000',
'cpl' => 'DCDC',
'fon' => '4D5A',
'ocx' => '4D5A',
'olb' => '4D5A',
'scr' => '4D5A',
'vbx' => '4D5A',
'vxd' => '4D5A',
'386' => '4D5A',
'api' => '4D5A900003000000',
'flt' => '76323030332E3130',
'ザップ' => '4D5A90000300000004000000FFFF',
'sln' => '4D6963726F736F66742056697375616C',
'jnt' => '4E422A00',
'jtp' => '4E422A00',
'タラ' => '4E616D653A20',
'dbf' => '4F504C4461746162',
'oga' => '4F67675300020000',
'ogg' => '4F67675300020000',
'ogv' => '4F67675300020000',
'ogx' => '4F67675300020000',
'dw4' => '4F7B',
'pgm' => '50350A',
'pax' => '504158',
'pgd' => '504750644D41494E',
'img' => 'EB3C902A',
'zip' => '504B0304140000',
'docx' => '504B030414000600',
'pptx' => '504B030414000600',
'xlsx' => '504B030414000600',
'kwd' => '504B0304',
'odt' => '504B0304',
'odp' => '504B0304',
'ott' => '504B0304',
'sxc' => '504B0304',
'sxd' => '504B0304',
'sxi' => '504B0304',
'sxw' => '504B0304',
'wmz' => '504B0304',
'xpi' => '504B0304',
'xps' => '504B0304',
'xpt' => '5850434F4D0A5479',
'grp' => '504D4343',
'qemu' => '514649',
'abd' => '5157205665722E20',
'qsd' => '5157205665722E20',
'reg' => 'FFFE',
'sud' => '52454745444954',
'アニ' => '52494646',
'cmx' => '52494646',
'ds4' => '52494646',
'4xm' => '52494646',
'avi' => '52494646',
'cda' => '52494646',
'qcp' => '52494646',
'rmi' => '52494646',
'wav' => '52494646',
'キャップ' => '58435000',
'rar' => '526172211A0700',
'ast' => '5343486C',
'shw' => '53484F57',
'cpi' => 'FF464F4E54',
'座る' => '5374756666497420',
'sdr' => '534D415254445257',
'cnv' => '53514C4F434F4E56',
'cal' => 'B5A2B0B3B3B0A5B5',
'情報' => 'E310000100000000',
'uce' => '55434558',
'ufa' => '554641C6D2C1',
'pch' => '564350434830',
'ctl' => '56455253494F4E20',
'ws2' => '575332303030',
'lwp' => '576F726450726F',
'bdr' => '5854',
'動物園' => '5A4F4F20',
'ecf' => '5B47656E6572616C',
'vcw' => '5B4D535643',
'dun' => '5B50686F6E655D',
'サム' => '5B7665725D',
'cpx' => '5B57696E646F7773',
'cfg' => '5B666C7473696D2E',
'cas' => '5F434153455F',
'cbk' => '5F434153455F',
'arj' => '60EA',
'vhd' => '636F6E6563746978',
'csh' => '6375736800000002',
'p10' => '64000000',
'dex' => '6465780A30303900',
'dsw' => '64737766696C65',
'flac' => '664C614300000022',
'dbb' => '6C33336C',
'acd' => '72696666',
'ラム' => '727473703A2F2F',
'dmg' => '78',
'lgc' => '7B0D0A6F20',
'lgd' => '7B0D0A6F20',
'pwi' => '7B5C707769',
'rtf' => '7B5C72746631',
'psp' => '7E424B00',
'ワブ' => '9CCBCB8D1375D211',
'wpf' => '81CDAB',
'png' => '89504E470D0A1A0A',
'aw' => '8A0109000000E108',
'hap' => '91334846',
'skr' => '9501',
'gpg' => '99',
'pkr' => '9901',
'qdf' => 'AC9EBD8F0000',
'pwl' => 'E3828596',
'dcx' => 'B168DE3A',
'tib' => 'B46E6844',
'acs' => 'C3ABCDAB',
'lbk' => 'C8007900',
'クラス' => 'カフェベイブ',
'dbx' => 'CFAD12FE',
'ドット' => 'D0CF11E0A1B11AE1',
'pps' => 'D0CF11E0A1B11AE1',
'ppt' => 'D0CF11E0A1B11AE1',
'xla' => 「D0CF11E0A1B11AE1」、
'xls' => 'D0CF11E0A1B11AE1',
'wiz' => 'D0CF11E0A1B11AE1',
'ac_' => 'D0CF11E0A1B11AE1',
'adp' => 'D0CF11E0A1B11AE1',
'apr' => 'D0CF11E0A1B11AE1',
'mtw' => 'D0CF11E0A1B11AE1',
'opt' => 'D0CF11E0A1B11AE1',
'パブ' => 'D0CF11E0A1B11AE1',
'rvt' => 'D0CF11E0A1B11AE1',
'sou' => 'D0CF11E0A1B11AE1',
'spo' => 'D0CF11E0A1B11AE1',
'vsd' => 'D0CF11E0A1B11AE1',
'wps' => 'D0CF11E0A1B11AE1',
'ftr' => 'D20A0000',
'arl' => 'D42A',
'aut' => 'D42A',
'wmf' => 'D7CDC69A',
'efx' => 'DCFE',
'one' => 'E4525C7B8CD8A74D',
'rpm' => 'EDABEEDB',
'gho' => 'FEEF',
'ghs' => 'FEEF',
'wp' => 'FF575043',
'wpd' => 'FF575043',
'wpg' => 'FF575043',
'wpp' => 'FF575043',
'wp5' => 'FF575043',
'wp6' => 'FF575043',
'jfif' => 'FFD8FF',
'jpe' => 'FFD8FF',
'jpeg' => 'FFD8FF',
'jpg' => 'FFD8FF',
'mof' => 'FFFE23006C006900',
'ipa' => '504B03040A',
);
/**
* ファイルタイプをチェック
*
* @param string $filePath ファイルパス
* @param string $fileExt ファイル拡張子
*
* @return boolean
*/
public static function validation($filePath, $fileExt)
{
// 文件格式不明
if (!isset(self::$_fileFormats[$fileExt ]))
{
return false;
}
$length = strlen(self::$_fileFormats[$fileExt]);
$bin = self::_readFile($filePath, $length);
$fileHead = @unpack ("H{$length}", $bin);
// 判断文头
if (strto lower(self::$_fileFormats[$fileExt]) == $fileHead[1])
{
return true;
}
return false;
}
/**
* ファイルの内容を読み取ります
*
* @param string $filePath ファイルパス
* @param integer $size
*
* @return string
*/
private function _readFile($filePath, $size)
{
$file = fopen($filePath, "rb");
$bin = fread($file , $size);
fclose($file);
return $bin;
}
}
?>

调用例：

require './class_filetypevalidation.php';
// 文件路径
$filePath = "D:/test.png";
$x = FileTypeValidation::validation($filePath, 'zip');
var_dump($x);
?>