270 lines
9.6 KiB
PHP
270 lines
9.6 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpFoundation\File;
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use Symfony\Component\HttpFoundation\File\Exception\CannotWriteFileException;
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use Symfony\Component\HttpFoundation\File\Exception\ExtensionFileException;
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use Symfony\Component\HttpFoundation\File\Exception\FileException;
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use Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException;
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use Symfony\Component\HttpFoundation\File\Exception\FormSizeFileException;
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use Symfony\Component\HttpFoundation\File\Exception\IniSizeFileException;
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use Symfony\Component\HttpFoundation\File\Exception\NoFileException;
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use Symfony\Component\HttpFoundation\File\Exception\NoTmpDirFileException;
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use Symfony\Component\HttpFoundation\File\Exception\PartialFileException;
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use Symfony\Component\Mime\MimeTypes;
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/**
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* A file uploaded through a form.
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*
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* @author Bernhard Schussek <bschussek@gmail.com>
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* @author Florian Eckerstorfer <florian@eckerstorfer.org>
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class UploadedFile extends File
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{
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private bool $test;
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private string $originalName;
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private string $mimeType;
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private int $error;
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/**
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* Accepts the information of the uploaded file as provided by the PHP global $_FILES.
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*
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* The file object is only created when the uploaded file is valid (i.e. when the
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* isValid() method returns true). Otherwise the only methods that could be called
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* on an UploadedFile instance are:
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*
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* * getClientOriginalName,
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* * getClientMimeType,
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* * isValid,
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* * getError.
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*
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* Calling any other method on an non-valid instance will cause an unpredictable result.
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*
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* @param string $path The full temporary path to the file
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* @param string $originalName The original file name of the uploaded file
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* @param string|null $mimeType The type of the file as provided by PHP; null defaults to application/octet-stream
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* @param int|null $error The error constant of the upload (one of PHP's UPLOAD_ERR_XXX constants); null defaults to UPLOAD_ERR_OK
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* @param bool $test Whether the test mode is active
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* Local files are used in test mode hence the code should not enforce HTTP uploads
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*
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* @throws FileException If file_uploads is disabled
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* @throws FileNotFoundException If the file does not exist
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*/
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public function __construct(string $path, string $originalName, string $mimeType = null, int $error = null, bool $test = false)
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{
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$this->originalName = $this->getName($originalName);
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$this->mimeType = $mimeType ?: 'application/octet-stream';
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$this->error = $error ?: \UPLOAD_ERR_OK;
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$this->test = $test;
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parent::__construct($path, \UPLOAD_ERR_OK === $this->error);
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}
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/**
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* Returns the original file name.
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*
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* It is extracted from the request from which the file has been uploaded.
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* Then it should not be considered as a safe value.
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*/
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public function getClientOriginalName(): string
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{
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return $this->originalName;
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}
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/**
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* Returns the original file extension.
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*
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* It is extracted from the original file name that was uploaded.
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* Then it should not be considered as a safe value.
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*/
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public function getClientOriginalExtension(): string
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{
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return pathinfo($this->originalName, \PATHINFO_EXTENSION);
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}
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/**
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* Returns the file mime type.
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*
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* The client mime type is extracted from the request from which the file
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* was uploaded, so it should not be considered as a safe value.
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*
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* For a trusted mime type, use getMimeType() instead (which guesses the mime
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* type based on the file content).
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*
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* @see getMimeType()
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*/
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public function getClientMimeType(): string
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{
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return $this->mimeType;
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}
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/**
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* Returns the extension based on the client mime type.
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*
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* If the mime type is unknown, returns null.
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*
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* This method uses the mime type as guessed by getClientMimeType()
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* to guess the file extension. As such, the extension returned
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* by this method cannot be trusted.
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*
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* For a trusted extension, use guessExtension() instead (which guesses
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* the extension based on the guessed mime type for the file).
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*
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* @see guessExtension()
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* @see getClientMimeType()
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*/
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public function guessClientExtension(): ?string
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{
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if (!class_exists(MimeTypes::class)) {
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throw new \LogicException('You cannot guess the extension as the Mime component is not installed. Try running "composer require symfony/mime".');
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}
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return MimeTypes::getDefault()->getExtensions($this->getClientMimeType())[0] ?? null;
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}
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/**
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* Returns the upload error.
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*
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* If the upload was successful, the constant UPLOAD_ERR_OK is returned.
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* Otherwise one of the other UPLOAD_ERR_XXX constants is returned.
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*/
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public function getError(): int
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{
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return $this->error;
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}
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/**
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* Returns whether the file has been uploaded with HTTP and no error occurred.
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*/
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public function isValid(): bool
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{
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$isOk = \UPLOAD_ERR_OK === $this->error;
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return $this->test ? $isOk : $isOk && is_uploaded_file($this->getPathname());
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}
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/**
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* Moves the file to a new location.
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*
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* @throws FileException if, for any reason, the file could not have been moved
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*/
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public function move(string $directory, string $name = null): File
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{
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if ($this->isValid()) {
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if ($this->test) {
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return parent::move($directory, $name);
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}
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$target = $this->getTargetFile($directory, $name);
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set_error_handler(function ($type, $msg) use (&$error) { $error = $msg; });
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try {
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$moved = move_uploaded_file($this->getPathname(), $target);
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} finally {
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restore_error_handler();
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}
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if (!$moved) {
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throw new FileException(sprintf('Could not move the file "%s" to "%s" (%s).', $this->getPathname(), $target, strip_tags($error)));
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}
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@chmod($target, 0666 & ~umask());
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return $target;
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}
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switch ($this->error) {
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case \UPLOAD_ERR_INI_SIZE:
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throw new IniSizeFileException($this->getErrorMessage());
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case \UPLOAD_ERR_FORM_SIZE:
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throw new FormSizeFileException($this->getErrorMessage());
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case \UPLOAD_ERR_PARTIAL:
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throw new PartialFileException($this->getErrorMessage());
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case \UPLOAD_ERR_NO_FILE:
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throw new NoFileException($this->getErrorMessage());
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case \UPLOAD_ERR_CANT_WRITE:
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throw new CannotWriteFileException($this->getErrorMessage());
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case \UPLOAD_ERR_NO_TMP_DIR:
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throw new NoTmpDirFileException($this->getErrorMessage());
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case \UPLOAD_ERR_EXTENSION:
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throw new ExtensionFileException($this->getErrorMessage());
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}
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throw new FileException($this->getErrorMessage());
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}
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/**
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* Returns the maximum size of an uploaded file as configured in php.ini.
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*
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* @return int|float The maximum size of an uploaded file in bytes (returns float if size > PHP_INT_MAX)
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*/
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public static function getMaxFilesize(): int|float
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{
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$sizePostMax = self::parseFilesize(\ini_get('post_max_size'));
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$sizeUploadMax = self::parseFilesize(\ini_get('upload_max_filesize'));
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return min($sizePostMax ?: \PHP_INT_MAX, $sizeUploadMax ?: \PHP_INT_MAX);
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}
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private static function parseFilesize(string $size): int|float
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{
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if ('' === $size) {
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return 0;
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}
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$size = strtolower($size);
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$max = ltrim($size, '+');
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if (str_starts_with($max, '0x')) {
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$max = \intval($max, 16);
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} elseif (str_starts_with($max, '0')) {
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$max = \intval($max, 8);
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} else {
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$max = (int) $max;
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}
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switch (substr($size, -1)) {
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case 't': $max *= 1024;
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// no break
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case 'g': $max *= 1024;
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// no break
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case 'm': $max *= 1024;
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// no break
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case 'k': $max *= 1024;
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}
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return $max;
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}
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/**
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* Returns an informative upload error message.
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*/
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public function getErrorMessage(): string
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{
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static $errors = [
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\UPLOAD_ERR_INI_SIZE => 'The file "%s" exceeds your upload_max_filesize ini directive (limit is %d KiB).',
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\UPLOAD_ERR_FORM_SIZE => 'The file "%s" exceeds the upload limit defined in your form.',
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\UPLOAD_ERR_PARTIAL => 'The file "%s" was only partially uploaded.',
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\UPLOAD_ERR_NO_FILE => 'No file was uploaded.',
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\UPLOAD_ERR_CANT_WRITE => 'The file "%s" could not be written on disk.',
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\UPLOAD_ERR_NO_TMP_DIR => 'File could not be uploaded: missing temporary directory.',
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\UPLOAD_ERR_EXTENSION => 'File upload was stopped by a PHP extension.',
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];
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$errorCode = $this->error;
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$maxFilesize = \UPLOAD_ERR_INI_SIZE === $errorCode ? self::getMaxFilesize() / 1024 : 0;
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$message = $errors[$errorCode] ?? 'The file "%s" was not uploaded due to an unknown error.';
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return sprintf($message, $this->getClientOriginalName(), $maxFilesize);
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}
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}
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