Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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upload.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\attachment;
015
016 use phpbb\auth\auth;
017 use \phpbb\cache\service;
018 use \phpbb\config\config;
019 use \phpbb\event\dispatcher;
020 use \phpbb\language\language;
021 use \phpbb\mimetype\guesser;
022 use \phpbb\plupload\plupload;
023 use \phpbb\user;
024
025 /**
026 * Attachment upload class
027 */
028 class upload
029 {
030 /** @var auth */
031 protected $auth;
032
033 /** @var service */
034 protected $cache;
035
036 /** @var config */
037 protected $config;
038
039 /** @var \phpbb\files\upload Upload class */
040 protected $files_upload;
041
042 /** @var language */
043 protected $language;
044
045 /** @var guesser Mimetype guesser */
046 protected $mimetype_guesser;
047
048 /** @var dispatcher */
049 protected $phpbb_dispatcher;
050
051 /** @var plupload Plupload */
052 protected $plupload;
053
054 /** @var user */
055 protected $user;
056
057 /** @var \phpbb\files\filespec Current filespec instance */
058 private $file;
059
060 /** @var array File data */
061 private $file_data = array(
062 'error' => array()
063 );
064
065 /** @var array Extensions array */
066 private $extensions;
067
068 /**
069 * Constructor for attachments upload class
070 *
071 * @param auth $auth
072 * @param service $cache
073 * @param config $config
074 * @param \phpbb\files\upload $files_upload
075 * @param language $language
076 * @param guesser $mimetype_guesser
077 * @param dispatcher $phpbb_dispatcher
078 * @param plupload $plupload
079 * @param user $user
080 * @param $phpbb_root_path
081 */
082 public function __construct(auth $auth, service $cache, config $config, \phpbb\files\upload $files_upload, language $language, guesser $mimetype_guesser, dispatcher $phpbb_dispatcher, plupload $plupload, user $user, $phpbb_root_path)
083 {
084 $this->auth = $auth;
085 $this->cache = $cache;
086 $this->config = $config;
087 $this->files_upload = $files_upload;
088 $this->language = $language;
089 $this->mimetype_guesser = $mimetype_guesser;
090 $this->phpbb_dispatcher = $phpbb_dispatcher;
091 $this->plupload = $plupload;
092 $this->user = $user;
093 $this->phpbb_root_path = $phpbb_root_path;
094 }
095
096 /**
097 * Upload Attachment - filedata is generated here
098 * Uses upload class
099 *
100 * @param string $form_name The form name of the file upload input
101 * @param int $forum_id The id of the forum
102 * @param bool $local Whether the file is local or not
103 * @param string $local_storage The path to the local file
104 * @param bool $is_message Whether it is a PM or not
105 * @param array $local_filedata An file data object created for the local file
106 *
107 * @return array File data array
108 */
109 public function upload($form_name, $forum_id, $local = false, $local_storage = '', $is_message = false, $local_filedata = array())
110 {
111 $this->init_files_upload($forum_id, $is_message);
112
113 $this->file_data['post_attach'] = $local || $this->files_upload->is_valid($form_name);
114
115 if (!$this->file_data['post_attach'])
116 {
117 $this->file_data['error'][] = $this->language->lang('NO_UPLOAD_FORM_FOUND');
118 return $this->file_data;
119 }
120
121 $this->file = ($local) ? $this->files_upload->handle_upload('files.types.local', $local_storage, $local_filedata) : $this->files_upload->handle_upload('files.types.form', $form_name);
122
123 if ($this->file->init_error())
124 {
125 $this->file_data['post_attach'] = false;
126 return $this->file_data;
127 }
128
129 // Whether the uploaded file is in the image category
130 $is_image = (isset($this->extensions[$this->file->get('extension')]['display_cat'])) ? $this->extensions[$this->file->get('extension')]['display_cat'] == ATTACHMENT_CATEGORY_IMAGE : false;
131
132 if (!$this->auth->acl_get('a_') && !$this->auth->acl_get('m_', $forum_id))
133 {
134 // Check Image Size, if it is an image
135 if ($is_image)
136 {
137 $this->file->upload->set_allowed_dimensions(0, 0, $this->config['img_max_width'], $this->config['img_max_height']);
138 }
139
140 // Admins and mods are allowed to exceed the allowed filesize
141 if (!empty($this->extensions[$this->file->get('extension')]['max_filesize']))
142 {
143 $allowed_filesize = $this->extensions[$this->file->get('extension')]['max_filesize'];
144 }
145 else
146 {
147 $allowed_filesize = ($is_message) ? $this->config['max_filesize_pm'] : $this->config['max_filesize'];
148 }
149
150 $this->file->upload->set_max_filesize($allowed_filesize);
151 }
152
153 $this->file->clean_filename('unique', $this->user->data['user_id'] . '_');
154
155 // Are we uploading an image *and* this image being within the image category?
156 // Only then perform additional image checks.
157 $this->file->move_file($this->config['upload_path'], false, !$is_image);
158
159 // Do we have to create a thumbnail?
160 $this->file_data['thumbnail'] = ($is_image && $this->config['img_create_thumbnail']) ? 1 : 0;
161
162 // Make sure the image category only holds valid images...
163 $this->check_image($is_image);
164
165 if (sizeof($this->file->error))
166 {
167 $this->file->remove();
168 $this->file_data['error'] = array_merge($this->file_data['error'], $this->file->error);
169 $this->file_data['post_attach'] = false;
170
171 return $this->file_data;
172 }
173
174 $this->fill_file_data();
175
176 $filedata = $this->file_data;
177
178 /**
179 * Event to modify uploaded file before submit to the post
180 *
181 * @event core.modify_uploaded_file
182 * @var array filedata Array containing uploaded file data
183 * @var bool is_image Flag indicating if the file is an image
184 * @since 3.1.0-RC3
185 */
186 $vars = array(
187 'filedata',
188 'is_image',
189 );
190 extract($this->phpbb_dispatcher->trigger_event('core.modify_uploaded_file', compact($vars)));
191 $this->file_data = $filedata;
192 unset($filedata);
193
194 // Check for attachment quota and free space
195 if (!$this->check_attach_quota() || !$this->check_disk_space())
196 {
197 return $this->file_data;
198 }
199
200 // Create Thumbnail
201 $this->create_thumbnail();
202
203 return $this->file_data;
204 }
205
206 /**
207 * Create thumbnail for file if necessary
208 *
209 * @return array Updated $filedata
210 */
211 protected function create_thumbnail()
212 {
213 if ($this->file_data['thumbnail'])
214 {
215 $source = $this->file->get('destination_file');
216 $destination = $this->file->get('destination_path') . '/thumb_' . $this->file->get('realname');
217
218 if (!create_thumbnail($source, $destination, $this->file->get('mimetype')))
219 {
220 $this->file_data['thumbnail'] = 0;
221 }
222 }
223 }
224
225 /**
226 * Init files upload class
227 *
228 * @param int $forum_id Forum ID
229 * @param bool $is_message Whether attachment is inside PM or not
230 */
231 protected function init_files_upload($forum_id, $is_message)
232 {
233 if ($this->config['check_attachment_content'] && isset($this->config['mime_triggers']))
234 {
235 $this->files_upload->set_disallowed_content(explode('|', $this->config['mime_triggers']));
236 }
237 else if (!$this->config['check_attachment_content'])
238 {
239 $this->files_upload->set_disallowed_content(array());
240 }
241
242 $this->extensions = $this->cache->obtain_attach_extensions((($is_message) ? false : (int) $forum_id));
243 $this->files_upload->set_allowed_extensions(array_keys($this->extensions['_allowed_']));
244 }
245
246 /**
247 * Check if uploaded file is really an image
248 *
249 * @param bool $is_image Whether file is image
250 */
251 protected function check_image($is_image)
252 {
253 // Make sure the image category only holds valid images...
254 if ($is_image && !$this->file->is_image())
255 {
256 $this->file->remove();
257
258 if ($this->plupload && $this->plupload->is_active())
259 {
260 $this->plupload->emit_error(104, 'ATTACHED_IMAGE_NOT_IMAGE');
261 }
262
263 // If this error occurs a user tried to exploit an IE Bug by renaming extensions
264 // Since the image category is displaying content inline we need to catch this.
265 $this->file->set_error($this->language->lang('ATTACHED_IMAGE_NOT_IMAGE'));
266 }
267 }
268
269 /**
270 * Check if attachment quota was reached
271 *
272 * @return bool False if attachment quota was reached, true if not
273 */
274 protected function check_attach_quota()
275 {
276 if ($this->config['attachment_quota'])
277 {
278 if (intval($this->config['upload_dir_size']) + $this->file->get('filesize') > $this->config['attachment_quota'])
279 {
280 $this->file_data['error'][] = $this->language->lang('ATTACH_QUOTA_REACHED');
281 $this->file_data['post_attach'] = false;
282
283 $this->file->remove();
284
285 return false;
286 }
287 }
288
289 return true;
290 }
291
292 /**
293 * Check if there is enough free space available on disk
294 *
295 * @return bool True if disk space is available, false if not
296 */
297 protected function check_disk_space()
298 {
299 if ($free_space = @disk_free_space($this->phpbb_root_path . $this->config['upload_path']))
300 {
301 if ($free_space <= $this->file->get('filesize'))
302 {
303 if ($this->auth->acl_get('a_'))
304 {
305 $this->file_data['error'][] = $this->language->lang('ATTACH_DISK_FULL');
306 }
307 else
308 {
309 $this->file_data['error'][] = $this->language->lang('ATTACH_QUOTA_REACHED');
310 }
311 $this->file_data['post_attach'] = false;
312
313 $this->file->remove();
314
315 return false;
316 }
317 }
318
319 return true;
320 }
321
322 /**
323 * Fills file data with file information and current time as filetime
324 */
325 protected function fill_file_data()
326 {
327 $this->file_data['filesize'] = $this->file->get('filesize');
328 $this->file_data['mimetype'] = $this->file->get('mimetype');
329 $this->file_data['extension'] = $this->file->get('extension');
330 $this->file_data['physical_filename'] = $this->file->get('realname');
331 $this->file_data['real_filename'] = $this->file->get('uploadname');
332 $this->file_data['filetime'] = time();
333 }
334 }
335