aboutsummaryrefslogtreecommitdiffstats
path: root/include/RedDAV/RedDirectory.php
blob: c41056ac9fb263e2aeec62bbba8c0b2b1db87d5a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
<?php

namespace RedMatrix\RedDAV;

use Sabre\DAV;

/**
 * @brief RedDirectory class.
 *
 * A class that represents a directory.
 *
 * @extends \Sabre\DAV\Node
 * @implements \Sabre\DAV\ICollection
 * @implements \Sabre\DAV\IQuota
 *
 * @link http://github.com/friendica/red
 * @license http://opensource.org/licenses/mit-license.php The MIT License (MIT)
 */
class RedDirectory extends DAV\Node implements DAV\ICollection, DAV\IQuota {

	/**
	 * @brief The path inside /cloud
	 *
	 * @var string
	 */
	private $red_path;
	private $folder_hash;
	/**
	 * @brief The full path as seen in the browser.
	 * /cloud + $red_path
	 * @todo I think this is not used anywhere, we always strip '/cloud' and only use it in debug
	 * @var string
	 */
	private $ext_path;
	private $root_dir = '';
	private $auth;
	/**
	 * @brief The real path on the filesystem.
	 * The actual path in store/ with the hashed names.
	 *
	 * @var string
	 */
	private $os_path = '';

	/**
	 * @brief Sets up the directory node, expects a full path.
	 *
	 * @param string $ext_path a full path
	 * @param RedBasicAuth &$auth_plugin
	 */
	public function __construct($ext_path, &$auth_plugin) {
//		$ext_path = urldecode($ext_path);
		//logger('directory ' . $ext_path, LOGGER_DATA);
		$this->ext_path = $ext_path;
		// remove "/cloud" from the beginning of the path
		$modulename = get_app()->module; 
		$this->red_path = ((strpos($ext_path, '/' . $modulename) === 0) ? substr($ext_path, strlen($modulename) + 1) : $ext_path);
		if (! $this->red_path) {
			$this->red_path = '/';
		}
		$this->auth = $auth_plugin;
		$this->folder_hash = '';
		$this->getDir();

		if ($this->auth->browser) {
			$this->auth->browser->set_writeable();
		}
	}

	private function log() {
		logger('ext_path ' . $this->ext_path, LOGGER_DATA);
		logger('os_path  ' . $this->os_path, LOGGER_DATA);
		logger('red_path ' . $this->red_path, LOGGER_DATA);
	}

	/**
	 * @brief Returns an array with all the child nodes.
	 *
	 * @throw \Sabre\DAV\Exception\Forbidden
	 * @return array \Sabre\DAV\INode[]
	 */
	public function getChildren() {
		//logger('children for ' . $this->ext_path, LOGGER_DATA);
		$this->log();

		if (get_config('system', 'block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) {
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		if (($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'view_storage'))) {
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		$contents = RedCollectionData($this->red_path, $this->auth);
		return $contents;
	}

	/**
	 * @brief Returns a child by name.
	 *
	 *
	 * @throw \Sabre\DAV\Exception\Forbidden
	 * @throw \Sabre\DAV\Exception\NotFound
	 * @param string $name
	 */
	public function getChild($name) {
		logger($name, LOGGER_DATA);

		if (get_config('system', 'block_public') && (! $this->auth->channel_id) && (! $this->auth->observer)) {
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		if (($this->auth->owner_id) && (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'view_storage'))) {
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		$modulename = get_app()->module;
		if ($this->red_path === '/' && $name === $modulename) {
			return new RedDirectory('/' . $modulename, $this->auth);
		}

		$x = RedFileData($this->ext_path . '/' . $name, $this->auth);
		if ($x) {
			return $x;
		}

		throw new DAV\Exception\NotFound('The file with name: ' . $name . ' could not be found.');
	}

	/**
	 * @brief Returns the name of the directory.
	 *
	 * @return string
	 */
	public function getName() {
		//logger(basename($this->red_path), LOGGER_DATA);
		return (basename($this->red_path));
	}

	/**
	 * @brief Renames the directory.
	 *
	 * @todo handle duplicate directory name
	 *
	 * @throw \Sabre\DAV\Exception\Forbidden
	 * @param string $name The new name of the directory.
	 * @return void
	 */
	public function setName($name) {
		logger('old name ' . basename($this->red_path) . ' -> ' . $name, LOGGER_DATA);

		if ((! $name) || (! $this->auth->owner_id)) {
			logger('permission denied ' . $name);
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) {
			logger('permission denied '. $name);
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		list($parent_path, ) = DAV\URLUtil::splitPath($this->red_path);
		$new_path = $parent_path . '/' . $name;

		$r = q("UPDATE attach SET filename = '%s' WHERE hash = '%s' AND uid = %d",
			dbesc($name),
			dbesc($this->folder_hash),
			intval($this->auth->owner_id)
		);

		$this->red_path = $new_path;
	}

	/**
	 * @brief Creates a new file in the directory.
	 *
	 * Data will either be supplied as a stream resource, or in certain cases
	 * as a string. Keep in mind that you may have to support either.
	 *
	 * After successful creation of the file, you may choose to return the ETag
	 * of the new file here.
	 *
	 * @throw \Sabre\DAV\Exception\Forbidden
	 * @param string $name Name of the file
	 * @param resource|string $data Initial payload
	 * @return null|string ETag
	 */
	public function createFile($name, $data = null) {
		logger($name, LOGGER_DEBUG);

		if (! $this->auth->owner_id) {
			logger('permission denied ' . $name);
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		if (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage')) {
			logger('permission denied ' . $name);
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		$mimetype = z_mime_content_type($name);

		$c = q("SELECT * FROM channel WHERE channel_id = %d AND channel_removed = 0 LIMIT 1",
			intval($this->auth->owner_id)
		);

		if (! $c) {
			logger('no channel');
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		$filesize = 0;
		$hash = random_string();

		$f = 'store/' . $this->auth->owner_nick . '/' . (($this->os_path) ? $this->os_path . '/' : '') . $hash;


		$r = q("INSERT INTO attach ( aid, uid, hash, creator, filename, folder, os_storage, filetype, filesize, revision, is_photo, data, created, edited, allow_cid, allow_gid, deny_cid, deny_gid )
			VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s' ) ",
			intval($c[0]['channel_account_id']),
			intval($c[0]['channel_id']),
			dbesc($hash),
			dbesc($this->auth->observer),
			dbesc($name),
			dbesc($this->folder_hash),
			intval(1),
			dbesc($mimetype),
			intval($filesize),
			intval(0),
			intval($is_photo),
			dbesc($this->os_path . '/' . $hash),
			dbesc(datetime_convert()),
			dbesc(datetime_convert()),
			dbesc($c[0]['channel_allow_cid']),
			dbesc($c[0]['channel_allow_gid']),
			dbesc($c[0]['channel_deny_cid']),
			dbesc($c[0]['channel_deny_gid'])
		);



		// returns the number of bytes that were written to the file, or FALSE on failure
		$size = file_put_contents($f, $data);
		// delete attach entry if file_put_contents() failed
		if ($size === false) {
			logger('file_put_contents() failed to ' . $f);
			attach_delete($c[0]['channel_id'], $hash);
			return;
		}

		// returns now
		$edited = datetime_convert();



		$is_photo = 0;
		$x = @getimagesize($f);
		logger('getimagesize: ' . print_r($x,true), LOGGER_DATA); 
		if(($x) && ($x[2] === IMAGETYPE_GIF || $x[2] === IMAGETYPE_JPEG || $x[2] === IMAGETYPE_PNG)) {
			$is_photo = 1;
		}


		// updates entry with filesize and timestamp
		$d = q("UPDATE attach SET filesize = '%s', is_photo = %d, edited = '%s' WHERE hash = '%s' AND uid = %d",
			dbesc($size),
			intval($is_photo),
			dbesc($edited),
			dbesc($hash),
			intval($c[0]['channel_id'])
		);

		// update the folder's lastmodified timestamp
		$e = q("UPDATE attach SET edited = '%s' WHERE hash = '%s' AND uid = %d",
			dbesc($edited),
			dbesc($this->folder_hash),
			intval($c[0]['channel_id'])
		);

		$maxfilesize = get_config('system', 'maxfilesize');
		if (($maxfilesize) && ($size > $maxfilesize)) {
			attach_delete($c[0]['channel_id'], $hash);
			return;
		}

		// check against service class quota
		$limit = service_class_fetch($c[0]['channel_id'], 'attach_upload_limit');
		if ($limit !== false) {
			$x = q("SELECT SUM(filesize) AS total FROM attach WHERE aid = %d ",
				intval($c[0]['channel_account_id'])
			);
			if (($x) && ($x[0]['total'] + $size > $limit)) {
				logger('service class limit exceeded for ' . $c[0]['channel_name'] . ' total usage is ' . $x[0]['total'] . ' limit is ' . $limit);
				attach_delete($c[0]['channel_id'], $hash);
				return;
			}
		}

		if($is_photo) {
			require_once('include/photos.php');
			$args = array( 'data' => @file_get_contents($f), 'resource_id' => $hash);
			$p = photo_upload($c[0],get_app()->get_observer(),$args);
		}

	}

	/**
	 * @brief Creates a new subdirectory.
	 *
	 * @param string $name the directory to create
	 * @return void
	 */
	public function createDirectory($name) {
		logger($name, LOGGER_DEBUG);

		if ((! $this->auth->owner_id) || (! perm_is_allowed($this->auth->owner_id, $this->auth->observer, 'write_storage'))) {
			throw new DAV\Exception\Forbidden('Permission denied.');
		}

		$r = q("SELECT * FROM channel WHERE channel_id = %d AND channel_removed = 0 LIMIT 1",
			intval($this->auth->owner_id)
		);

		if ($r) {
			$result = attach_mkdir($r[0], $this->auth->observer, array('filename' => $name, 'folder' => $this->folder_hash));
			if (! $result['success']) {
				logger('error ' . print_r($result, true), LOGGER_DEBUG);
			}
		}
	}

	/**
	 * @brief Checks if a child exists.
	 *
	 * @param string $name
	 *  The name to check if it exists.
	 * @return boolean
	 */
	public function childExists($name) {
		// On /cloud we show a list of available channels.
		// @todo what happens if no channels are available?
		$modulename = get_app()->module;
		if ($this->red_path === '/' && $name === $modulename) {
			//logger('We are at ' $modulename . ' show a channel list', LOGGER_DEBUG);
			return true;
		}

		$x = RedFileData($this->ext_path . '/' . $name, $this->auth, true);
		//logger('RedFileData returns: ' . print_r($x, true), LOGGER_DATA);
		if ($x)
			return true;

		return false;
	}

	/**
	 * @todo add description of what this function does.
	 *
	 * @throw \Sabre\DAV\Exception\NotFound
	 * @return void
	 */
	function getDir() {
		//logger($this->ext_path, LOGGER_DEBUG);
		$this->auth->log();
		$modulename = get_app()->module;

		$file = $this->ext_path;

		$x = strpos($file, '/' . $modulename);
		if ($x === false)
			return;
		if ($x === 0) {
			$file = substr($file, strlen($modulename) + 1);
		}

		if ((! $file) || ($file === '/')) {
			return;
		}

		$file = trim($file, '/');
		$path_arr = explode('/', $file);

		if (! $path_arr)
			return;

		logger('paths: ' . print_r($path_arr, true), LOGGER_DATA);

		$channel_name = $path_arr[0];

		$r = q("SELECT channel_id FROM channel WHERE channel_address = '%s' AND channel_removed = 0 LIMIT 1",
			dbesc($channel_name)
		);

		if (! $r) {
			throw new DAV\Exception\NotFound('The file with name: ' . $channel_name . ' could not be found.');
		}

		$channel_id = $r[0]['channel_id'];
		$this->auth->owner_id = $channel_id;
		$this->auth->owner_nick = $channel_name;

		$path = '/' . $channel_name;
		$folder = '';
		$os_path = '';

		for ($x = 1; $x < count($path_arr); $x++) {
			$r = q("select id, hash, filename, flags from attach where folder = '%s' and filename = '%s' and uid = %d and (flags & %d)>0",
				dbesc($folder),
				dbesc($path_arr[$x]),
				intval($channel_id),
				intval(ATTACH_FLAG_DIR)
			);

			if ($r && ( $r[0]['flags'] & ATTACH_FLAG_DIR)) {
				$folder = $r[0]['hash'];
				if (strlen($os_path))
					$os_path .= '/';
				$os_path .= $folder;

				$path = $path . '/' . $r[0]['filename'];
			}
		}
		$this->folder_hash = $folder;
		$this->os_path = $os_path;
	}

	/**
	 * @brief Returns the last modification time for the directory, as a UNIX
	 * timestamp.
	 *
	 * It looks for the last edited file in the folder. If it is an empty folder
	 * it returns the lastmodified time of the folder itself, to prevent zero
	 * timestamps.
	 *
	 * @return int last modification time in UNIX timestamp
	 */
	public function getLastModified() {
		$r = q("SELECT edited FROM attach WHERE folder = '%s' AND uid = %d ORDER BY edited DESC LIMIT 1",
			dbesc($this->folder_hash),
			intval($this->auth->owner_id)
		);
		if (! $r) {
			$r = q("SELECT edited FROM attach WHERE hash = '%s' AND uid = %d LIMIT 1",
				dbesc($this->folder_hash),
				intval($this->auth->owner_id)
			);
			if (! $r)
				return '';
		}
		return datetime_convert('UTC', 'UTC', $r[0]['edited'], 'U');
	}

	/**
	 * @brief Return quota usage.
	 *
	 * @fixme Should guests relly see the used/free values from filesystem of the
	 * complete store directory?
	 *
	 * @return array with used and free values in bytes.
	 */
	public function getQuotaInfo() {
		// values from the filesystem of the complete <i>store/</i> directory
		$limit = disk_total_space('store');
		$free = disk_free_space('store');

		if ($this->auth->owner_id) {
			$c = q("select * from channel where channel_id = %d and channel_removed = 0 limit 1",
				intval($this->auth->owner_id)
			);

			$ulimit = service_class_fetch($c[0]['channel_id'], 'attach_upload_limit');
			$limit = (($ulimit) ? $ulimit : $limit);

			$x = q("select sum(filesize) as total from attach where aid = %d",
				intval($c[0]['channel_account_id'])
			);
			$free = (($x) ? $limit - $x[0]['total'] : 0);
		}

		return array(
			$limit - $free,
			$free
		);
	}
}