Verzeichnisstruktur phpBB-3.3.16
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manager.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\extension;
015
016 use phpbb\exception\runtime_exception;
017 use phpbb\file_downloader;
018 use Symfony\Component\DependencyInjection\ContainerInterface;
019
020 /**
021 * The extension manager provides means to activate/deactivate extensions.
022 */
023 class manager
024 {
025 /** @var ContainerInterface */
026 protected $container;
027
028 protected $db;
029 protected $config;
030 protected $cache;
031 protected $php_ext;
032 protected $extensions;
033 protected $extension_table;
034 protected $filesystem;
035 protected $phpbb_root_path;
036 protected $cache_name;
037
038 /**
039 * Creates a manager and loads information from database
040 *
041 * @param ContainerInterface $container A container
042 * @param \phpbb\db\driver\driver_interface $db A database connection
043 * @param \phpbb\config\config $config Config object
044 * @param \phpbb\filesystem\filesystem_interface $filesystem
045 * @param string $extension_table The name of the table holding extensions
046 * @param string $phpbb_root_path Path to the phpbb includes directory.
047 * @param string $php_ext php file extension, defaults to php
048 * @param \phpbb\cache\service $cache A cache instance or null
049 * @param string $cache_name The name of the cache variable, defaults to _ext
050 */
051 public function __construct(ContainerInterface $container, \phpbb\db\driver\driver_interface $db, \phpbb\config\config $config, \phpbb\filesystem\filesystem_interface $filesystem, $extension_table, $phpbb_root_path, $php_ext = 'php', \phpbb\cache\service $cache = null, $cache_name = '_ext')
052 {
053 $this->cache = $cache;
054 $this->cache_name = $cache_name;
055 $this->config = $config;
056 $this->container = $container;
057 $this->db = $db;
058 $this->extension_table = $extension_table;
059 $this->filesystem = $filesystem;
060 $this->phpbb_root_path = $phpbb_root_path;
061 $this->php_ext = $php_ext;
062
063 $this->extensions = ($this->cache) ? $this->cache->get($this->cache_name) : false;
064
065 if ($this->extensions === false)
066 {
067 $this->load_extensions();
068 }
069 }
070
071 /**
072 * Loads all extension information from the database
073 *
074 * @return null
075 */
076 public function load_extensions()
077 {
078 $this->extensions = array();
079
080 // Do not try to load any extensions if the extension table
081 // does not exist or when installing or updating.
082 // Note: database updater invokes this code, and in 3.0
083 // there is no extension table therefore the rest of this function
084 // fails
085 if (defined('IN_INSTALL') || version_compare($this->config['version'], '3.1.0-dev', '<'))
086 {
087 return;
088 }
089
090 $sql = 'SELECT *
091 FROM ' . $this->extension_table;
092
093 $result = $this->db->sql_query($sql);
094 $extensions = $this->db->sql_fetchrowset($result);
095 $this->db->sql_freeresult($result);
096
097 foreach ($extensions as $extension)
098 {
099 $extension['ext_path'] = $this->get_extension_path($extension['ext_name']);
100 $this->extensions[$extension['ext_name']] = $extension;
101 }
102
103 ksort($this->extensions);
104
105 if ($this->cache)
106 {
107 $this->cache->put($this->cache_name, $this->extensions);
108 }
109 }
110
111 /**
112 * Generates the path to an extension
113 *
114 * @param string $name The name of the extension
115 * @param bool $phpbb_relative Whether the path should be relative to phpbb root
116 * @return string Path to an extension
117 */
118 public function get_extension_path($name, $phpbb_relative = false)
119 {
120 $name = str_replace('.', '', $name);
121
122 return (($phpbb_relative) ? $this->phpbb_root_path : '') . 'ext/' . $name . '/';
123 }
124
125 /**
126 * Instantiates the extension meta class for the extension with the given name
127 *
128 * @param string $name The extension name
129 * @return \phpbb\extension\extension_interface Instance of the extension meta class or
130 * \phpbb\extension\base if the class does not exist
131 */
132 public function get_extension($name)
133 {
134 $extension_class_name = str_replace('/', '\\', $name) . '\\ext';
135
136 $migrator = $this->container->get('migrator');
137
138 if (class_exists($extension_class_name))
139 {
140 return new $extension_class_name($this->container, $this->get_finder(), $migrator, $name, $this->get_extension_path($name, true));
141 }
142 else
143 {
144 return new \phpbb\extension\base($this->container, $this->get_finder(), $migrator, $name, $this->get_extension_path($name, true));
145 }
146 }
147
148 /**
149 * Instantiates the metadata manager for the extension with the given name
150 *
151 * @param string $name The extension name
152 * @return \phpbb\extension\metadata_manager Instance of the metadata manager
153 */
154 public function create_extension_metadata_manager($name)
155 {
156 if (!isset($this->extensions[$name]['metadata']))
157 {
158 $metadata = new \phpbb\extension\metadata_manager($name, $this->get_extension_path($name, true));
159 $this->extensions[$name]['metadata'] = $metadata;
160 }
161 return $this->extensions[$name]['metadata'];
162 }
163
164 /**
165 * Update the database entry for an extension
166 *
167 * @param string $name Extension name to update
168 * @param array $data Data to update in the database
169 * @param string $action Action to perform, by default 'update', may be also 'insert' or 'delete'
170 */
171 protected function update_state($name, $data, $action = 'update')
172 {
173 switch ($action)
174 {
175 case 'insert':
176 $this->extensions[$name] = $data;
177 $this->extensions[$name]['ext_path'] = $this->get_extension_path($name);
178 ksort($this->extensions);
179 $sql = 'INSERT INTO ' . $this->extension_table . ' ' . $this->db->sql_build_array('INSERT', $data);
180 $this->db->sql_query($sql);
181 break;
182
183 case 'update':
184 $this->extensions[$name] = array_merge($this->extensions[$name], $data);
185 $sql = 'UPDATE ' . $this->extension_table . '
186 SET ' . $this->db->sql_build_array('UPDATE', $data) . "
187 WHERE ext_name = '" . $this->db->sql_escape($name) . "'";
188 $this->db->sql_query($sql);
189 break;
190
191 case 'delete':
192 unset($this->extensions[$name]);
193 $sql = 'DELETE FROM ' . $this->extension_table . "
194 WHERE ext_name = '" . $this->db->sql_escape($name) . "'";
195 $this->db->sql_query($sql);
196 break;
197 }
198
199 if ($this->cache)
200 {
201 $this->cache->deferred_purge();
202 }
203 }
204
205 /**
206 * Runs a step of the extension enabling process.
207 *
208 * Allows the exentension to enable in a long running script that works
209 * in multiple steps across requests. State is kept for the extension
210 * in the extensions table.
211 *
212 * @param string $name The extension's name
213 * @return bool False if enabling is finished, true otherwise
214 */
215 public function enable_step($name)
216 {
217 // ignore extensions that are already enabled
218 if ($this->is_enabled($name))
219 {
220 return false;
221 }
222
223 $old_state = (isset($this->extensions[$name]['ext_state'])) ? unserialize($this->extensions[$name]['ext_state']) : false;
224
225 $extension = $this->get_extension($name);
226
227 if (!$extension->is_enableable())
228 {
229 return false;
230 }
231
232 $state = $extension->enable_step($old_state);
233
234 $active = ($state === false);
235
236 $extension_data = array(
237 'ext_name' => $name,
238 'ext_active' => $active,
239 'ext_state' => serialize($state),
240 );
241
242 $this->update_state($name, $extension_data, $this->is_configured($name) ? 'update' : 'insert');
243
244 if ($active)
245 {
246 $this->config->increment('assets_version', 1);
247 }
248
249 return !$active;
250 }
251
252 /**
253 * Enables an extension
254 *
255 * This method completely enables an extension. But it could be long running
256 * so never call this in a script that has a max_execution time.
257 *
258 * @param string $name The extension's name
259 * @return null
260 */
261 public function enable($name)
262 {
263 while ($this->enable_step($name));
264 }
265
266 /**
267 * Disables an extension
268 *
269 * Calls the disable method on the extension's meta class to allow it to
270 * process the event.
271 *
272 * @param string $name The extension's name
273 * @return bool False if disabling is finished, true otherwise
274 */
275 public function disable_step($name)
276 {
277 // ignore extensions that are not enabled
278 if (!$this->is_enabled($name))
279 {
280 return false;
281 }
282
283 $old_state = unserialize($this->extensions[$name]['ext_state']);
284
285 $extension = $this->get_extension($name);
286 $state = $extension->disable_step($old_state);
287 $active = ($state !== false);
288
289 $extension_data = array(
290 'ext_active' => $active,
291 'ext_state' => serialize($state),
292 );
293 $this->update_state($name, $extension_data);
294
295 return $active;
296 }
297
298 /**
299 * Disables an extension
300 *
301 * Disables an extension completely at once. This process could run for a
302 * while so never call this in a script that has a max_execution time.
303 *
304 * @param string $name The extension's name
305 * @return null
306 */
307 public function disable($name)
308 {
309 while ($this->disable_step($name));
310 }
311
312 /**
313 * Purge an extension
314 *
315 * Disables the extension first if active, and then calls purge on the
316 * extension's meta class to delete the extension's database content.
317 *
318 * @param string $name The extension's name
319 * @return bool False if purging is finished, true otherwise
320 */
321 public function purge_step($name)
322 {
323 // ignore extensions that are not configured
324 if (!$this->is_configured($name))
325 {
326 return false;
327 }
328
329 // disable first if necessary
330 if ($this->extensions[$name]['ext_active'])
331 {
332 $this->disable($name);
333 }
334
335 $old_state = unserialize($this->extensions[$name]['ext_state']);
336
337 $extension = $this->get_extension($name);
338 $state = $extension->purge_step($old_state);
339 $purged = ($state === false);
340
341 $extension_data = array(
342 'ext_state' => serialize($state),
343 );
344
345 $this->update_state($name, $extension_data, $purged ? 'delete' : 'update');
346
347 // continue until the state is false
348 return !$purged;
349 }
350
351 /**
352 * Purge an extension
353 *
354 * Purges an extension completely at once. This process could run for a while
355 * so never call this in a script that has a max_execution time.
356 *
357 * @param string $name The extension's name
358 * @return null
359 */
360 public function purge($name)
361 {
362 while ($this->purge_step($name));
363 }
364
365 /**
366 * Retrieves a list of all available extensions on the filesystem
367 *
368 * @return array An array with extension names as keys and paths to the
369 * extension as values
370 */
371 public function all_available()
372 {
373 $available = array();
374 if (!is_dir($this->phpbb_root_path . 'ext/'))
375 {
376 return $available;
377 }
378
379 $iterator = new \RecursiveIteratorIterator(
380 new \phpbb\recursive_dot_prefix_filter_iterator(
381 new \RecursiveDirectoryIterator($this->phpbb_root_path . 'ext/', \FilesystemIterator::NEW_CURRENT_AND_KEY | \FilesystemIterator::FOLLOW_SYMLINKS)
382 ),
383 \RecursiveIteratorIterator::SELF_FIRST
384 );
385 $iterator->setMaxDepth(2);
386
387 foreach ($iterator as $file_info)
388 {
389 if ($file_info->isFile() && $file_info->getFilename() == 'composer.json')
390 {
391 $ext_name = $iterator->getInnerIterator()->getSubPath();
392 $ext_name = str_replace(DIRECTORY_SEPARATOR, '/', $ext_name);
393 if ($this->is_available($ext_name))
394 {
395 $available[$ext_name] = $this->get_extension_path($ext_name, true);
396 }
397 }
398 }
399 ksort($available);
400 return $available;
401 }
402
403 /**
404 * Retrieves all configured extensions.
405 *
406 * All enabled and disabled extensions are considered configured. A purged
407 * extension that is no longer in the database is not configured.
408 *
409 * @param bool $phpbb_relative Whether the path should be relative to phpbb root
410 *
411 * @return array An array with extension names as keys and and the
412 * database stored extension information as values
413 */
414 public function all_configured($phpbb_relative = true)
415 {
416 $configured = array();
417 foreach ($this->extensions as $name => $data)
418 {
419 if ($this->is_configured($name))
420 {
421 unset($data['metadata']);
422 $data['ext_path'] = ($phpbb_relative ? $this->phpbb_root_path : '') . $data['ext_path'];
423 $configured[$name] = $data;
424 }
425 }
426 return $configured;
427 }
428
429 /**
430 * Retrieves all enabled extensions.
431 * @param bool $phpbb_relative Whether the path should be relative to phpbb root
432 *
433 * @return array An array with extension names as keys and and the
434 * database stored extension information as values
435 */
436 public function all_enabled($phpbb_relative = true)
437 {
438 $enabled = array();
439 foreach ($this->extensions as $name => $data)
440 {
441 if ($this->is_enabled($name))
442 {
443 $enabled[$name] = ($phpbb_relative ? $this->phpbb_root_path : '') . $data['ext_path'];
444 }
445 }
446 return $enabled;
447 }
448
449 /**
450 * Retrieves all disabled extensions.
451 *
452 * @param bool $phpbb_relative Whether the path should be relative to phpbb root
453 *
454 * @return array An array with extension names as keys and and the
455 * database stored extension information as values
456 */
457 public function all_disabled($phpbb_relative = true)
458 {
459 $disabled = array();
460 foreach ($this->extensions as $name => $data)
461 {
462 if ($this->is_disabled($name))
463 {
464 $disabled[$name] = ($phpbb_relative ? $this->phpbb_root_path : '') . $data['ext_path'];
465 }
466 }
467 return $disabled;
468 }
469
470 /**
471 * Check to see if a given extension is available on the filesystem
472 *
473 * @param string $name Extension name to check NOTE: Can be user input
474 * @return bool Depending on whether or not the extension is available
475 */
476 public function is_available($name)
477 {
478 $md_manager = $this->create_extension_metadata_manager($name);
479 try
480 {
481 return $md_manager->get_metadata('all') && $md_manager->validate_enable();
482 }
483 catch (\phpbb\extension\exception $e)
484 {
485 return false;
486 }
487 }
488
489 /**
490 * Check to see if a given extension is enabled
491 *
492 * @param string $name Extension name to check
493 * @return bool Depending on whether or not the extension is enabled
494 */
495 public function is_enabled($name)
496 {
497 return isset($this->extensions[$name]['ext_active']) && $this->extensions[$name]['ext_active'];
498 }
499
500 /**
501 * Check to see if a given extension is disabled
502 *
503 * @param string $name Extension name to check
504 * @return bool Depending on whether or not the extension is disabled
505 */
506 public function is_disabled($name)
507 {
508 return isset($this->extensions[$name]['ext_active']) && !$this->extensions[$name]['ext_active'];
509 }
510
511 /**
512 * Check to see if a given extension is configured
513 *
514 * All enabled and disabled extensions are considered configured. A purged
515 * extension that is no longer in the database is not configured.
516 *
517 * @param string $name Extension name to check
518 * @return bool Depending on whether or not the extension is configured
519 */
520 public function is_configured($name)
521 {
522 return isset($this->extensions[$name]['ext_active']);
523 }
524
525 /**
526 * Check the version and return the available updates (for an extension).
527 *
528 * @param \phpbb\extension\metadata_manager $md_manager The metadata manager for the version to check.
529 * @param bool $force_update Ignores cached data. Defaults to false.
530 * @param bool $force_cache Force the use of the cache. Override $force_update.
531 * @param string $stability Force the stability (null by default).
532 * @return array
533 * @throws runtime_exception
534 */
535 public function version_check(\phpbb\extension\metadata_manager $md_manager, $force_update = false, $force_cache = false, $stability = null)
536 {
537 $meta = $md_manager->get_metadata('all');
538
539 if (!isset($meta['extra']['version-check']))
540 {
541 throw new runtime_exception('NO_VERSIONCHECK');
542 }
543
544 $version_check = $meta['extra']['version-check'];
545
546 $version_helper = new \phpbb\version_helper($this->cache, $this->config, new file_downloader());
547 $version_helper->set_current_version($meta['version']);
548 $version_helper->set_file_location($version_check['host'], $version_check['directory'], $version_check['filename'], isset($version_check['ssl']) ? $version_check['ssl'] : false);
549 $version_helper->force_stability($stability);
550
551 return $version_helper->get_ext_update_on_branch($force_update, $force_cache);
552 }
553
554 /**
555 * Check to see if a given extension is purged
556 *
557 * An extension is purged if it is available, not enabled and not disabled.
558 *
559 * @param string $name Extension name to check
560 * @return bool Depending on whether or not the extension is purged
561 */
562 public function is_purged($name)
563 {
564 return $this->is_available($name) && !$this->is_configured($name);
565 }
566
567 /**
568 * Instantiates a \phpbb\finder.
569 *
570 * @param bool $use_all_available Should we load all extensions, or just enabled ones
571 * @return \phpbb\finder An extension finder instance
572 */
573 public function get_finder($use_all_available = false)
574 {
575 $finder = new \phpbb\finder($this->filesystem, $this->phpbb_root_path, $this->cache, $this->php_ext, $this->cache_name . '_finder');
576 if ($use_all_available)
577 {
578 $finder->set_extensions(array_keys($this->all_available()));
579 }
580 else
581 {
582 $finder->set_extensions(array_keys($this->all_enabled()));
583 }
584 return $finder;
585 }
586 }
587