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- 06.01.2017
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UploadedFile.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Component\HttpFoundation\File;
013
014 use Symfony\Component\HttpFoundation\File\Exception\FileException;
015 use Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException;
016 use Symfony\Component\HttpFoundation\File\MimeType\ExtensionGuesser;
017
018 /**
019 * A file uploaded through a form.
020 *
021 * @author Bernhard Schussek <bschussek@gmail.com>
022 * @author Florian Eckerstorfer <florian@eckerstorfer.org>
023 * @author Fabien Potencier <fabien@symfony.com>
024 */
025 class UploadedFile extends File
026 {
027 /**
028 * Whether the test mode is activated.
029 *
030 * Local files are used in test mode hence the code should not enforce HTTP uploads.
031 *
032 * @var bool
033 */
034 private $test = false;
035
036 /**
037 * The original name of the uploaded file.
038 *
039 * @var string
040 */
041 private $originalName;
042
043 /**
044 * The mime type provided by the uploader.
045 *
046 * @var string
047 */
048 private $mimeType;
049
050 /**
051 * The file size provided by the uploader.
052 *
053 * @var int|null
054 */
055 private $size;
056
057 /**
058 * The UPLOAD_ERR_XXX constant provided by the uploader.
059 *
060 * @var int
061 */
062 private $error;
063
064 /**
065 * Accepts the information of the uploaded file as provided by the PHP global $_FILES.
066 *
067 * The file object is only created when the uploaded file is valid (i.e. when the
068 * isValid() method returns true). Otherwise the only methods that could be called
069 * on an UploadedFile instance are:
070 *
071 * * getClientOriginalName,
072 * * getClientMimeType,
073 * * isValid,
074 * * getError.
075 *
076 * Calling any other method on an non-valid instance will cause an unpredictable result.
077 *
078 * @param string $path The full temporary path to the file
079 * @param string $originalName The original file name
080 * @param string|null $mimeType The type of the file as provided by PHP; null defaults to application/octet-stream
081 * @param int|null $size The file size
082 * @param int|null $error The error constant of the upload (one of PHP's UPLOAD_ERR_XXX constants); null defaults to UPLOAD_ERR_OK
083 * @param bool $test Whether the test mode is active
084 *
085 * @throws FileException If file_uploads is disabled
086 * @throws FileNotFoundException If the file does not exist
087 */
088 public function __construct($path, $originalName, $mimeType = null, $size = null, $error = null, $test = false)
089 {
090 $this->originalName = $this->getName($originalName);
091 $this->mimeType = $mimeType ?: 'application/octet-stream';
092 $this->size = $size;
093 $this->error = $error ?: UPLOAD_ERR_OK;
094 $this->test = (bool) $test;
095
096 parent::__construct($path, UPLOAD_ERR_OK === $this->error);
097 }
098
099 /**
100 * Returns the original file name.
101 *
102 * It is extracted from the request from which the file has been uploaded.
103 * Then it should not be considered as a safe value.
104 *
105 * @return string|null The original name
106 */
107 public function getClientOriginalName()
108 {
109 return $this->originalName;
110 }
111
112 /**
113 * Returns the original file extension.
114 *
115 * It is extracted from the original file name that was uploaded.
116 * Then it should not be considered as a safe value.
117 *
118 * @return string The extension
119 */
120 public function getClientOriginalExtension()
121 {
122 return pathinfo($this->originalName, PATHINFO_EXTENSION);
123 }
124
125 /**
126 * Returns the file mime type.
127 *
128 * The client mime type is extracted from the request from which the file
129 * was uploaded, so it should not be considered as a safe value.
130 *
131 * For a trusted mime type, use getMimeType() instead (which guesses the mime
132 * type based on the file content).
133 *
134 * @return string|null The mime type
135 *
136 * @see getMimeType()
137 */
138 public function getClientMimeType()
139 {
140 return $this->mimeType;
141 }
142
143 /**
144 * Returns the extension based on the client mime type.
145 *
146 * If the mime type is unknown, returns null.
147 *
148 * This method uses the mime type as guessed by getClientMimeType()
149 * to guess the file extension. As such, the extension returned
150 * by this method cannot be trusted.
151 *
152 * For a trusted extension, use guessExtension() instead (which guesses
153 * the extension based on the guessed mime type for the file).
154 *
155 * @return string|null The guessed extension or null if it cannot be guessed
156 *
157 * @see guessExtension()
158 * @see getClientMimeType()
159 */
160 public function guessClientExtension()
161 {
162 $type = $this->getClientMimeType();
163 $guesser = ExtensionGuesser::getInstance();
164
165 return $guesser->guess($type);
166 }
167
168 /**
169 * Returns the file size.
170 *
171 * It is extracted from the request from which the file has been uploaded.
172 * Then it should not be considered as a safe value.
173 *
174 * @return int|null The file size
175 */
176 public function getClientSize()
177 {
178 return $this->size;
179 }
180
181 /**
182 * Returns the upload error.
183 *
184 * If the upload was successful, the constant UPLOAD_ERR_OK is returned.
185 * Otherwise one of the other UPLOAD_ERR_XXX constants is returned.
186 *
187 * @return int The upload error
188 */
189 public function getError()
190 {
191 return $this->error;
192 }
193
194 /**
195 * Returns whether the file was uploaded successfully.
196 *
197 * @return bool True if the file has been uploaded with HTTP and no error occurred
198 */
199 public function isValid()
200 {
201 $isOk = $this->error === UPLOAD_ERR_OK;
202
203 return $this->test ? $isOk : $isOk && is_uploaded_file($this->getPathname());
204 }
205
206 /**
207 * Moves the file to a new location.
208 *
209 * @param string $directory The destination folder
210 * @param string $name The new file name
211 *
212 * @return File A File object representing the new file
213 *
214 * @throws FileException if, for any reason, the file could not have been moved
215 */
216 public function move($directory, $name = null)
217 {
218 if ($this->isValid()) {
219 if ($this->test) {
220 return parent::move($directory, $name);
221 }
222
223 $target = $this->getTargetFile($directory, $name);
224
225 if (!@move_uploaded_file($this->getPathname(), $target)) {
226 $error = error_get_last();
227 throw new FileException(sprintf('Could not move the file "%s" to "%s" (%s)', $this->getPathname(), $target, strip_tags($error['message'])));
228 }
229
230 @chmod($target, 0666 & ~umask());
231
232 return $target;
233 }
234
235 throw new FileException($this->getErrorMessage());
236 }
237
238 /**
239 * Returns the maximum size of an uploaded file as configured in php.ini.
240 *
241 * @return int The maximum size of an uploaded file in bytes
242 */
243 public static function getMaxFilesize()
244 {
245 $iniMax = strtolower(ini_get('upload_max_filesize'));
246
247 if ('' === $iniMax) {
248 return PHP_INT_MAX;
249 }
250
251 $max = ltrim($iniMax, '+');
252 if (0 === strpos($max, '0x')) {
253 $max = intval($max, 16);
254 } elseif (0 === strpos($max, '0')) {
255 $max = intval($max, 8);
256 } else {
257 $max = (int) $max;
258 }
259
260 switch (substr($iniMax, -1)) {
261 case 't': $max *= 1024;
262 case 'g': $max *= 1024;
263 case 'm': $max *= 1024;
264 case 'k': $max *= 1024;
265 }
266
267 return $max;
268 }
269
270 /**
271 * Returns an informative upload error message.
272 *
273 * @return string The error message regarding the specified error code
274 */
275 public function getErrorMessage()
276 {
277 static $errors = array(
278 UPLOAD_ERR_INI_SIZE => 'The file "%s" exceeds your upload_max_filesize ini directive (limit is %d KiB).',
279 UPLOAD_ERR_FORM_SIZE => 'The file "%s" exceeds the upload limit defined in your form.',
280 UPLOAD_ERR_PARTIAL => 'The file "%s" was only partially uploaded.',
281 UPLOAD_ERR_NO_FILE => 'No file was uploaded.',
282 UPLOAD_ERR_CANT_WRITE => 'The file "%s" could not be written on disk.',
283 UPLOAD_ERR_NO_TMP_DIR => 'File could not be uploaded: missing temporary directory.',
284 UPLOAD_ERR_EXTENSION => 'File upload was stopped by a PHP extension.',
285 );
286
287 $errorCode = $this->error;
288 $maxFilesize = $errorCode === UPLOAD_ERR_INI_SIZE ? self::getMaxFilesize() / 1024 : 0;
289 $message = isset($errors[$errorCode]) ? $errors[$errorCode] : 'The file "%s" was not uploaded due to an unknown error.';
290
291 return sprintf($message, $this->getClientOriginalName(), $maxFilesize);
292 }
293 }
294