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180 lines
5.9 KiB
180 lines
5.9 KiB
<?php |
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/** |
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* PHPExcel_Shared_File |
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* |
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* Copyright (c) 2006 - 2015 PHPExcel |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* @category PHPExcel |
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* @package PHPExcel_Shared |
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* @copyright Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel) |
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* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL |
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* @version ##VERSION##, ##DATE## |
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*/ |
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class PHPExcel_Shared_File |
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{ |
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/* |
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* Use Temp or File Upload Temp for temporary files |
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* |
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* @protected |
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* @var boolean |
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*/ |
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protected static $useUploadTempDirectory = false; |
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/** |
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* Set the flag indicating whether the File Upload Temp directory should be used for temporary files |
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* |
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* @param boolean $useUploadTempDir Use File Upload Temporary directory (true or false) |
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*/ |
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public static function setUseUploadTempDirectory($useUploadTempDir = false) |
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{ |
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self::$useUploadTempDirectory = (boolean) $useUploadTempDir; |
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} |
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/** |
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* Get the flag indicating whether the File Upload Temp directory should be used for temporary files |
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* |
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* @return boolean Use File Upload Temporary directory (true or false) |
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*/ |
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public static function getUseUploadTempDirectory() |
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{ |
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return self::$useUploadTempDirectory; |
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} |
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/** |
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* Verify if a file exists |
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* |
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* @param string $pFilename Filename |
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* @return bool |
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*/ |
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public static function file_exists($pFilename) |
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{ |
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// Sick construction, but it seems that |
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// file_exists returns strange values when |
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// doing the original file_exists on ZIP archives... |
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if (strtolower(substr($pFilename, 0, 3)) == 'zip') { |
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// Open ZIP file and verify if the file exists |
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$zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6); |
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$archiveFile = substr($pFilename, strpos($pFilename, '#') + 1); |
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$zip = new ZipArchive(); |
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if ($zip->open($zipFile) === true) { |
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$returnValue = ($zip->getFromName($archiveFile) !== false); |
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$zip->close(); |
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return $returnValue; |
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} else { |
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return false; |
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} |
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} else { |
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// Regular file_exists |
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return file_exists($pFilename); |
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} |
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} |
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/** |
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* Returns canonicalized absolute pathname, also for ZIP archives |
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* |
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* @param string $pFilename |
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* @return string |
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*/ |
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public static function realpath($pFilename) |
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{ |
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// Returnvalue |
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$returnValue = ''; |
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// Try using realpath() |
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if (file_exists($pFilename)) { |
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$returnValue = realpath($pFilename); |
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} |
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// Found something? |
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if ($returnValue == '' || ($returnValue === null)) { |
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$pathArray = explode('/', $pFilename); |
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while (in_array('..', $pathArray) && $pathArray[0] != '..') { |
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for ($i = 0; $i < count($pathArray); ++$i) { |
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if ($pathArray[$i] == '..' && $i > 0) { |
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unset($pathArray[$i]); |
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unset($pathArray[$i - 1]); |
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break; |
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} |
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} |
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} |
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$returnValue = implode('/', $pathArray); |
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} |
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// Return |
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return $returnValue; |
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} |
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/** |
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* Get the systems temporary directory. |
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* |
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* @return string |
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*/ |
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public static function sys_get_temp_dir() |
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{ |
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if (self::$useUploadTempDirectory) { |
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// use upload-directory when defined to allow running on environments having very restricted |
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// open_basedir configs |
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if (ini_get('upload_tmp_dir') !== false) { |
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if ($temp = ini_get('upload_tmp_dir')) { |
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if (file_exists($temp)) { |
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return realpath($temp); |
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} |
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} |
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} |
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} |
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// sys_get_temp_dir is only available since PHP 5.2.1 |
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// http://php.net/manual/en/function.sys-get-temp-dir.php#94119 |
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if (!function_exists('sys_get_temp_dir')) { |
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if ($temp = getenv('TMP')) { |
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if ((!empty($temp)) && (file_exists($temp))) { |
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return realpath($temp); |
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} |
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} |
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if ($temp = getenv('TEMP')) { |
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if ((!empty($temp)) && (file_exists($temp))) { |
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return realpath($temp); |
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} |
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} |
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if ($temp = getenv('TMPDIR')) { |
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if ((!empty($temp)) && (file_exists($temp))) { |
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return realpath($temp); |
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} |
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} |
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// trick for creating a file in system's temporary dir |
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// without knowing the path of the system's temporary dir |
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$temp = tempnam(__FILE__, ''); |
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if (file_exists($temp)) { |
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unlink($temp); |
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return realpath(dirname($temp)); |
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} |
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return null; |
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} |
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// use ordinary built-in PHP function |
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// There should be no problem with the 5.2.4 Suhosin realpath() bug, because this line should only |
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// be called if we're running 5.2.1 or earlier |
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return realpath(sys_get_temp_dir()); |
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} |
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}
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