154 lines
4.3 KiB
PHP
154 lines
4.3 KiB
PHP
<?php
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namespace PhpOffice\PhpSpreadsheet\Shared;
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use InvalidArgumentException;
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use PhpOffice\PhpSpreadsheet\Exception;
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use ZipArchive;
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class 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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* @var bool
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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 bool $useUploadTempDir Use File Upload Temporary directory (true or false)
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*/
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public static function setUseUploadTempDirectory($useUploadTempDir): void
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{
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self::$useUploadTempDirectory = (bool) $useUploadTempDir;
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}
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/**
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* Get the flag indicating whether the File Upload Temp directory should be used for temporary files.
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*
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* @return bool Use File Upload Temporary directory (true or false)
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*/
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public static function getUseUploadTempDirectory()
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{
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return self::$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 $pFilename Filename
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*
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* @return bool
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*/
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public static function fileExists($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 $returnValue;
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}
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return false;
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}
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return file_exists($pFilename);
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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 $pFilename
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*
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* @return string
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*/
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public static function realpath($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) && $pathArray[0] != '..') {
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$iMax = count($pathArray);
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for ($i = 0; $i < $iMax; ++$i) {
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if ($pathArray[$i] == '..' && $i > 0) {
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unset($pathArray[$i], $pathArray[$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 $returnValue;
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}
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/**
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* Get the systems temporary directory.
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*
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* @return string
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*/
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public static function sysGetTempDir()
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{
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if (self::$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($temp);
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}
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}
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}
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}
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return realpath(sys_get_temp_dir());
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}
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public static function temporaryFilename(): string
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{
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$filename = tempnam(self::sysGetTempDir(), 'phpspreadsheet');
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if ($filename === false) {
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throw new Exception('Could not create temporary file');
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}
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return $filename;
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}
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/**
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* Assert that given path is an existing file and is readable, otherwise throw exception.
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*
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* @param string $filename
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*/
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public static function assertFile($filename): void
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{
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if (!is_file($filename)) {
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throw new InvalidArgumentException('File "' . $filename . '" does not exist.');
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}
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if (!is_readable($filename)) {
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throw new InvalidArgumentException('Could not open "' . $filename . '" for reading.');
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}
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}
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}
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