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<?php namespace PhpOffice\PhpSpreadsheet\Shared; use InvalidArgumentException; use PhpOffice\PhpSpreadsheet\Exception; use ZipArchive; class File { /** * Use Temp or File Upload Temp for temporary files. * * @var bool */ protected static $useUploadTempDirectory = false; /** * Set the flag indicating whether the File Upload Temp directory should be used for temporary files. * * @param bool $useUploadTempDir Use File Upload Temporary directory (true or false) */ public static function setUseUploadTempDirectory($useUploadTempDir): void { self::$useUploadTempDirectory = (bool) $useUploadTempDir; } /** * Get the flag indicating whether the File Upload Temp directory should be used for temporary files. * * @return bool Use File Upload Temporary directory (true or false) */ public static function getUseUploadTempDirectory() { return self::$useUploadTempDirectory; } /** * Verify if a file exists. * * @param string $pFilename Filename * * @return bool */ public static function fileExists($pFilename) { // Sick construction, but it seems that // file_exists returns strange values when // doing the original file_exists on ZIP archives... if (strtolower(substr($pFilename, 0, 3)) == 'zip') { // Open ZIP file and verify if the file exists $zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6); $archiveFile = substr($pFilename, strpos($pFilename, '#') + 1); $zip = new ZipArchive(); if ($zip->open($zipFile) === true) { $returnValue = ($zip->getFromName($archiveFile) !== false); $zip->close(); return $returnValue; } return false; } return file_exists($pFilename); } /** * Returns canonicalized absolute pathname, also for ZIP archives. * * @param string $pFilename * * @return string */ public static function realpath($pFilename) { // Returnvalue $returnValue = ''; // Try using realpath() if (file_exists($pFilename)) { $returnValue = realpath($pFilename); } // Found something? if ($returnValue == '' || ($returnValue === null)) { $pathArray = explode('/', $pFilename); while (in_array('..', $pathArray) && $pathArray[0] != '..') { $iMax = count($pathArray); for ($i = 0; $i < $iMax; ++$i) { if ($pathArray[$i] == '..' && $i > 0) { unset($pathArray[$i], $pathArray[$i - 1]); break; } } } $returnValue = implode('/', $pathArray); } // Return return $returnValue; } /** * Get the systems temporary directory. * * @return string */ public static function sysGetTempDir() { if (self::$useUploadTempDirectory) { // use upload-directory when defined to allow running on environments having very restricted // open_basedir configs if (ini_get('upload_tmp_dir') !== false) { if ($temp = ini_get('upload_tmp_dir')) { if (file_exists($temp)) { return realpath($temp); } } } } return realpath(sys_get_temp_dir()); } public static function temporaryFilename(): string { $filename = tempnam(self::sysGetTempDir(), 'phpspreadsheet'); if ($filename === false) { throw new Exception('Could not create temporary file'); } return $filename; } /** * Assert that given path is an existing file and is readable, otherwise throw exception. * * @param string $filename */ public static function assertFile($filename): void { if (!is_file($filename)) { throw new InvalidArgumentException('File "' . $filename . '" does not exist.'); } if (!is_readable($filename)) { throw new InvalidArgumentException('Could not open "' . $filename . '" for reading.'); } } }