SMF2.1 /Sources/Subs-Attachments.php

Language PHP Lines 804
MD5 Hash 6fb02b57879a25e5bb49ac584f3ae9dd
Repository https://github.com/smf-portal/SMF2.1.git View Raw File
  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
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
<?php

/**
 * This file handles the uploading and creation of attachments
 * as well as the auto management of the attachment directories.
 *
 * Simple Machines Forum (SMF)
 *
 * @package SMF
 * @author Simple Machines
 *
 * @copyright 2012 Simple Machines
 * @license http://www.simplemachines.org/about/smf/license.php BSD
 *
 * @version 2.1 Alpha 1
 */

if (!defined('SMF'))
	die('Hacking attempt...');

function automanage_attachments_check_directory()
{
	global $boarddir, $modSettings, $context;

	// Not pretty, but since we don't want folders created for every post. It'll do unless a better solution can be found.
	if (isset($_REQUEST['action']) && $_REQUEST['action'] == 'admin')
		$doit = true;
	elseif (empty($modSettings['automanage_attachments']))
		return;
	elseif (!isset($_FILES))
		return;
	elseif (isset($_FILES['attachment']))
		foreach ($_FILES['attachment']['tmp_name'] as $dummy)
			if (!empty($dummy))
			{
				$doit = true;
				break;
			}

	if (!isset($doit))
		return;

	$year = date('Y');
	$month = date('m');
	$day = date('d');

	$rand = md5(mt_rand());
	$rand1 = $rand[1];
	$rand = $rand[0];

	if (!empty($modSettings['attachment_basedirectories']) && !empty($modSettings['use_subdirectories_for_attachments']))
	{
			if (!is_array($modSettings['attachment_basedirectories']))
				$modSettings['attachment_basedirectories'] = unserialize($modSettings['attachment_basedirectories']);
			$base_dir = array_search($modSettings['basedirectory_for_attachments'], $modSettings['attachment_basedirectories']);
	}
	else
		$base_dir = 0;

	if ($modSettings['automanage_attachments'] == 1)
	{
		if (!isset($modSettings['last_attachments_directory']))
			$modSettings['last_attachments_directory'] = array();
		if (!is_array($modSettings['last_attachments_directory']))
			$modSettings['last_attachments_directory'] = unserialize($modSettings['last_attachments_directory']);
		if (!isset($modSettings['last_attachments_directory'][$base_dir]))
			$modSettings['last_attachments_directory'][$base_dir] = 0;
	}

	$basedirectory = (!empty($modSettings['use_subdirectories_for_attachments']) ? ($modSettings['basedirectory_for_attachments']) : $boarddir);
	//Just to be sure: I don't want directory separators at the end
	$sep = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? '\/' : DIRECTORY_SEPARATOR;
	$basedirectory = rtrim($basedirectory, $sep);

	switch ($modSettings['automanage_attachments'])
	{
		case 1:
			$updir = $basedirectory . DIRECTORY_SEPARATOR . 'attachments_' . (isset($modSettings['last_attachments_directory'][$base_dir]) ? $modSettings['last_attachments_directory'][$base_dir] : 0);
			break;
		case 2:
			$updir = $basedirectory . DIRECTORY_SEPARATOR . $year;
			break;
		case 3:
			$updir = $basedirectory . DIRECTORY_SEPARATOR . $year . DIRECTORY_SEPARATOR . $month;
			break;
		case 4:
			$updir = $basedirectory . DIRECTORY_SEPARATOR . (empty($modSettings['use_subdirectories_for_attachments']) ? 'attachments-' : 'random_') . $rand;
			break;
		case 5:
			$updir = $basedirectory . DIRECTORY_SEPARATOR . (empty($modSettings['use_subdirectories_for_attachments']) ? 'attachments-' : 'random_') . $rand . DIRECTORY_SEPARATOR . $rand1;
			break;
		default :
			$updir = '';
	}

	if (!is_array($modSettings['attachmentUploadDir']))
		$modSettings['attachmentUploadDir'] = unserialize($modSettings['attachmentUploadDir']);
	if (!in_array($updir, $modSettings['attachmentUploadDir']) && !empty($updir))
		$outputCreation = automanage_attachments_create_directory($updir);
	elseif (in_array($updir, $modSettings['attachmentUploadDir']))
		$outputCreation = true;

	if ($outputCreation)
	{
		$modSettings['currentAttachmentUploadDir'] = array_search($updir, $modSettings['attachmentUploadDir']);
		$context['attach_dir'] = $modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']];

		updateSettings(array(
			'currentAttachmentUploadDir' => $modSettings['currentAttachmentUploadDir'],
		));
	}

	return $outputCreation;
}

function automanage_attachments_create_directory($updir)
{
	global $modSettings, $initial_error, $context, $boarddir;

	$tree = get_directory_tree_elements($updir);
	$count = count($tree);

	$directory = attachments_init_dir($tree, $count);
	if ($directory === false)
	{
		// Maybe it's just the folder name
		$tree = get_directory_tree_elements($boarddir . DIRECTORY_SEPARATOR . $updir);
		$count = count($tree);
	
		$directory = attachments_init_dir($tree, $count);
		if ($directory === false)
			return false;
	}

	$directory .= DIRECTORY_SEPARATOR . array_shift($tree);

	while (!@is_dir($directory) || $count != -1)
	{
		if (!@is_dir($directory))
		{
			if (!@mkdir($directory,0755))
			{
				$context['dir_creation_error'] = 'attachments_no_create';
				return false;
			}
		}

		$directory .= DIRECTORY_SEPARATOR . array_shift($tree);
		$count--;
	}

	if (!is_writable($directory))
	{
		chmod($directory, 0755);
		if (!is_writable($directory))
		{
			chmod($directory, 0775);
			if (!is_writable($directory))
			{
				chmod($directory, 0777);
				if (!is_writable($directory))
				{
					$context['dir_creation_error'] = 'attachments_no_write';
					return false;
				}
			}
		}
	}

	// Everything seems fine...let's create the .htaccess
	if (!file_exists($directory . DIRECTORY_SEPARATOR . '.htaccess'))
		secureDirectory($updir, true);

	$sep = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? '\/' : DIRECTORY_SEPARATOR;
	$updir = rtrim($updir, $sep);

	// Only update if it's a new directory
	if (!in_array($updir, $modSettings['attachmentUploadDir']))
	{
		$modSettings['currentAttachmentUploadDir'] = max(array_keys($modSettings['attachmentUploadDir'])) +1;
		$modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']] = $updir;

		updateSettings(array(
			'attachmentUploadDir' => serialize($modSettings['attachmentUploadDir']),
			'currentAttachmentUploadDir' => $modSettings['currentAttachmentUploadDir'],
		), true);
		$modSettings['attachmentUploadDir'] = unserialize($modSettings['attachmentUploadDir']);
	}

	$context['attach_dir'] = $modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']];
	return true;
}

function automanage_attachments_by_space()
{
	global $modSettings, $boarddir, $context;

	if (!isset($modSettings['automanage_attachments']) || (!empty($modSettings['automanage_attachments']) && $modSettings['automanage_attachments'] != 1))
		return;

	$basedirectory = (!empty($modSettings['use_subdirectories_for_attachments']) ? ($modSettings['basedirectory_for_attachments']) : $boarddir);
	//Just to be sure: I don't want directory separators at the end
	$sep = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? '\/' : DIRECTORY_SEPARATOR;
	$basedirectory = rtrim($basedirectory, $sep);

	// Get the current base directory
	if (!empty($modSettings['use_subdirectories_for_attachments']) && !empty($modSettings['attachment_basedirectories']))
	{
		$base_dir = array_search($modSettings['basedirectory_for_attachments'], $modSettings['attachment_basedirectories']);
		$base_dir = !empty($modSettings['automanage_attachments']) ? $base_dir : 0;
	}
	else
		$base_dir = 0;

	// Get the last attachment directory for that base directory
	if (empty($modSettings['last_attachments_directory'][$base_dir]))
		$modSettings['last_attachments_directory'][$base_dir] = 0;
	// And increment it.
	$modSettings['last_attachments_directory'][$base_dir]++;

	$updir = $basedirectory . DIRECTORY_SEPARATOR . 'attachments_' . $modSettings['last_attachments_directory'][$base_dir];
	if (automanage_attachments_create_directory($updir))
	{
		$modSettings['currentAttachmentUploadDir'] = array_search($updir, $modSettings['attachmentUploadDir']);
		updateSettings(array(
			'last_attachments_directory' => serialize($modSettings['last_attachments_directory']),
			'currentAttachmentUploadDir' => $modSettings['currentAttachmentUploadDir'],
		));
		$modSettings['last_attachments_directory'] = unserialize($modSettings['last_attachments_directory']);

		return true;
	}
	else
		return false;
}

function get_directory_tree_elements ($directory)
{
	/*
		In Windows server both \ and / can be used as directory separators in paths
		In Linux (and presumably *nix) servers \ can be part of the name
		So for this reasons:
			* in Windows we need to explode for both \ and /
			* while in linux should be safe to explode only for / (aka DIRECTORY_SEPARATOR)
	*/
	if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
		$tree = preg_split('#[\\\/]#', $directory);
	else
	{
		if (substr($directory, 0, 1)!=DIRECTORY_SEPARATOR)
			return false;

		$tree = explode(DIRECTORY_SEPARATOR, trim($directory,DIRECTORY_SEPARATOR));
	}
	return $tree;
}

function attachments_init_dir (&$tree, &$count)
{
	$directory = '';
	// If on Windows servers the first part of the path is the drive (e.g. "C:")
	if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN')
	{
		 //Better be sure that the first part of the path is actually a drive letter...
		 //...even if, I should check this in the admin page...isn't it?
		 //...NHAAA Let's leave space for users' complains! :P
		if (preg_match('/^[a-z]:$/i',$tree[0]))
			$directory = array_shift($tree);
		else
			return false;

		$count--;
	}
	return $directory;
}

function processAttachments()
{
	global $context, $modSettings, $smcFunc, $txt, $user_info;

	// Make sure we're uploading to the right place.
	if (!empty($modSettings['automanage_attachments']))
		automanage_attachments_check_directory();

	if (!is_array($modSettings['attachmentUploadDir']))
		$modSettings['attachmentUploadDir'] = unserialize($modSettings['attachmentUploadDir']);

	$context['attach_dir'] = $modSettings['attachmentUploadDir'][$modSettings['currentAttachmentUploadDir']];

	// Is the attachments folder actualy there?
	if (!empty($context['dir_creation_error']))
		$initial_error = $context['dir_creation_error'];
	elseif (!is_dir($context['attach_dir']))
	{
		$initial_error = 'attach_folder_warning';
		log_error(sprintf($txt['attach_folder_admin_warning'], $context['attach_dir']), 'critical');
	}

	if (!isset($initial_error) && !isset($context['attachments']))
	{
		// If this isn't a new post, check the current attachments.
		if (isset($_REQUEST['msg']))
		{
			$request = $smcFunc['db_query']('', '
				SELECT COUNT(*), SUM(size)
				FROM {db_prefix}attachments
				WHERE id_msg = {int:id_msg}
					AND attachment_type = {int:attachment_type}',
				array(
					'id_msg' => (int) $_REQUEST['msg'],
					'attachment_type' => 0,
				)
			);
			list ($context['attachments']['quantity'], $context['attachments']['total_size']) = $smcFunc['db_fetch_row']($request);
			$smcFunc['db_free_result']($request);
		}
		else
			$context['attachments'] = array(
				'quantity' => 0,
				'total_size' => 0,
			);
	}

	// Hmm. There are still files in session.
	$ignore_temp = false;
	if (!empty($_SESSION['temp_attachments']['post']['files']) && count($_SESSION['temp_attachments']) > 1)
	{
		// Let's try to keep them. But...
		$ignore_temp = true;
		// If new files are being added. We can't ignore those
		foreach ($_FILES['attachment']['tmp_name'] as $dummy)
			if (!empty($dummy))
			{
				$ignore_temp = false;
				break;
			}

		// Need to make space for the new files. So, bye bye.
		if (!$ignore_temp)
		{
			foreach ($_SESSION['temp_attachments'] as $attachID => $attachment)
				if (strpos($attachID, 'post_tmp_' . $user_info['id']) !== false)
					unlink($attachment['tmp_name']);

			$context['we_are_history'] = $txt['error_temp_attachments_flushed'];
			$_SESSION['temp_attachments'] = array();
		}
	}

	if (!isset($_FILES['attachment']['name']))
		$_FILES['attachment']['tmp_name'] = array();

	if (!isset($_SESSION['temp_attachments']))
		$_SESSION['temp_attachments'] = array();

	// Remember where we are at. If it's anywhere at all.
	if (!$ignore_temp)
		$_SESSION['temp_attachments']['post'] = array(
			'msg' => !empty($_REQUEST['msg']) ? $_REQUEST['msg'] : 0,
			'last_msg' => !empty($_REQUEST['last_msg']) ? $_REQUEST['last_msg'] : 0,
			'topic' => !empty($topic) ? $topic : 0,
			'board' => !empty($board) ? $board : 0,
		);

	// If we have an itital error, lets just display it.
	if (!empty($initial_error))
	{
		$_SESSION['temp_attachments']['initial_error'] = $initial_error;

		// And delete the files 'cos they ain't going nowhere.
		foreach ($_FILES['attachment']['tmp_name'] as $n => $dummy)
			if (file_exists($_FILES['attachment']['tmp_name'][$n]))
				unlink($_FILES['attachment']['tmp_name'][$n]);

		$_FILES['attachment']['tmp_name'] = array();
	}

	// Loop through $_FILES['attachment'] array and move each file to the current attachments folder.
	foreach ($_FILES['attachment']['tmp_name'] as $n => $dummy)
	{
		if ($_FILES['attachment']['name'][$n] == '')
			continue;

		// First, let's first check for PHP upload errors.
		$errors = array();
		if (!empty($_FILES['attachment']['error'][$n]))
		{
			if ($_FILES['attachment']['error'][$n] == 2)
				$errors[] = array('file_too_big', array($modSettings['attachmentSizeLimit']));
			elseif ($_FILES['attachment']['error'][$n] == 6)
				log_error($_FILES['attachment']['name'][$n] . ': ' . $txt['php_upload_error_6'], 'critical');
			else
				log_error($_FILES['attachment']['name'][$n] . ': ' . $txt['php_upload_error_' . $_FILES['attachment']['error'][$n]]);
			if (empty($errors))
				$errors[] = 'attach_php_error';
		}

		// Try to move and rename the file before doing any more checks on it.
		$attachID = 'post_tmp_' . $user_info['id'] . '_' . md5(mt_rand());
		$destName = $context['attach_dir'] . '/' . $attachID;
		if (empty($errors))
		{
			$_SESSION['temp_attachments'][$attachID] = array(
				'name' => htmlspecialchars(basename($_FILES['attachment']['name'][$n])),
				'tmp_name' => $destName,
				'size' => $_FILES['attachment']['size'][$n],
				'type' => $_FILES['attachment']['type'][$n],
				'id_folder' => $modSettings['currentAttachmentUploadDir'],
				'errors' => array(),
			);

			// Move the file to the attachments folder with a temp name for now.
			if (@move_uploaded_file($_FILES['attachment']['tmp_name'][$n], $destName))
				@chmod($destName, 0644);
			else
			{
				$_SESSION['temp_attachments'][$attachID]['errors'][] = 'attach_timeout';
				if (file_exists($_FILES['attachment']['tmp_name'][$n]))
					unlink($_FILES['attachment']['tmp_name'][$n]);
			}
		}
		else
		{
			$_SESSION['temp_attachments'][$attachID] = array(
				'name' => htmlspecialchars(basename($_FILES['attachment']['name'][$n])),
				'tmp_name' => $destName,
				'errors' => $errors,
			);

			if (file_exists($_FILES['attachment']['tmp_name'][$n]))
				unlink($_FILES['attachment']['tmp_name'][$n]);
		}
		// If there's no errors to this pont. We still do need to apply some addtional checks before we are finished.
		if (empty($_SESSION['temp_attachments'][$attachID]['errors']))
			attachmentChecks($attachID);
	}
	// Mod authors, finally a hook to hang an alternate attachment upload system upon
	// Upload to the current attachment folder with the file name $attachID or 'post_tmp_' . $user_info['id'] . '_' . md5(mt_rand())
	// Populate $_SESSION['temp_attachments'][$attachID] with the following:
	//   name => The file name
	//   tmp_name => Path to the temp file ($context['attach_dir'] . '/' . $attachID).
	//   size => File size (required).
	//   type => MIME type (optional if not available on upload).
	//   id_folder => $modSettings['currentAttachmentUploadDir']
	//   errors => An array of errors (use the index of the $txt variable for that error).
	// Template changes can be done using "integrate_upload_template".
	call_integration_hook('integrate_attachment_upload');
}

/**
 * Performs various checks on an uploaded file.
 * - Requires that $_SESSION['temp_attachments'][$attachID] be properly populated.
 *
 * @param $attachID
 */
function attachmentChecks($attachID)
{
	global $modSettings, $context, $sourcedir, $smcFunc;

	// No data or missing data .... Not necessarily needed, but in case a mod author missed something.
	if ( empty($_SESSION['temp_attachments'][$attachID]))
		$errror = '$_SESSION[\'temp_attachments\'][$attachID]';
	elseif (empty($attachID))
		$errror = '$attachID';
	elseif (empty($context['attachments']))
		$errror = '$context[\'attachments\']';
	elseif (empty($context['attach_dir']))
		$errror = '$context[\'attach_dir\']';

	// Let's get their attention.
	if (!empty($error))
		fatal_lang_error('attach_check_nag', 'debug', array($error));

	// These are the only valid image types for SMF.
	$validImageTypes = array(
		1 => 'gif',
		2 => 'jpeg',
		3 => 'png',
		5 => 'psd',
		6 => 'bmp',
		7 => 'tiff',
		8 => 'tiff',
		9 => 'jpeg',
		14 => 'iff'
	);

	// Just in case this slipped by the first checks, we stop it here and now
	if ($_SESSION['temp_attachments'][$attachID]['size'] == 0)
	{
		$_SESSION['temp_attachments'][$attachID]['errors'][] = 'attach_0_byte_file';
		return false;
	}

	// First, the dreaded security check. Sorry folks, but this should't be avoided
	$size = @getimagesize($_SESSION['temp_attachments'][$attachID]['tmp_name']);
	if (isset($validImageTypes[$size[2]]))
	{
		require_once($sourcedir . '/Subs-Graphics.php');
		if (!checkImageContents($_SESSION['temp_attachments'][$attachID]['tmp_name'], !empty($modSettings['attachment_image_paranoid'])))
		{
			// It's bad. Last chance, maybe we can re-encode it?
			if (empty($modSettings['attachment_image_reencode']) || (!reencodeImage($_SESSION['temp_attachments'][$attachID]['tmp_name'], $size[2])))
			{
				// Nothing to do: not allowed or not successful re-encoding it.
				$_SESSION['temp_attachments'][$attachID]['errors'][] = 'bad_attachment';
				return false;
			}
			// Success! However, successes usually come for a price:
			// we might get a new format for our image...
			$old_format = $size[2];
			$size = @getimagesize($attachmentOptions['tmp_name']);
			if (!(empty($size)) && ($size[2] != $old_format))
			{
				if (isset($validImageTypes[$size[2]]))
					$_SESSION['temp_attachments'][$attachID]['type'] = 'image/' . $validImageTypes[$size[2]];
			}
		}
	}

	// Is there room for this sucker?
	if (!empty($modSettings['attachmentDirSizeLimit']) || !empty($modSettings['attachmentDirFileLimit']))
	{
		// Check the folder size and count. If it hasn't been done already.
		if (empty($context['dir_size']) || empty($context['dir_files']))
		{
			$request = $smcFunc['db_query']('', '
				SELECT COUNT(*), SUM(size)
				FROM {db_prefix}attachments
				WHERE id_folder = {int:folder_id}
					AND attachment_type != {int:type}',
				array(
					'folder_id' => $modSettings['currentAttachmentUploadDir'],
					'type' => 1,
				)
			);
			list ($context['dir_files'], $context['dir_size']) = $smcFunc['db_fetch_row']($request);
			$smcFunc['db_free_result']($request);
		}
		$context['dir_size'] += $_SESSION['temp_attachments'][$attachID]['size'];
		$context['dir_files']++;

		// Are we about to run out of room? Let's notify the admin then.
		if (empty($modSettings['attachment_full_notified']) && !empty($modSettings['attachmentDirSizeLimit']) && $modSettings['attachmentDirSizeLimit'] > 4000 && $context['dir_size'] > ($modSettings['attachmentDirSizeLimit'] - 2000) * 1024
			|| (!empty($modSettings['attachmentDirFileLimit']) && $modSettings['attachmentDirFileLimit'] * .95 < $context['dir_files'] && $modSettings['attachmentDirFileLimit'] > 500))
		{
			require_once($sourcedir . '/Subs-Admin.php');
			emailAdmins('admin_attachments_full');
			updateSettings(array('attachment_full_notified' => 1));
		}

		// // No room left.... What to do now???
		if (!empty($modSettings['attachmentDirFileLimit']) && $context['dir_files'] + 2 > $modSettings['attachmentDirFileLimit']
			|| (!empty($modSettings['attachmentDirSizeLimit']) && $context['dir_size'] > $modSettings['attachmentDirSizeLimit'] * 1024))
		{
			if (!empty($modSettings['automanage_attachments']) && $modSettings['automanage_attachments'] == 1)
			{
				// Move it to the new folder if we can.
				if (automanage_attachments_by_space())
				{
					rename($_SESSION['temp_attachments'][$attachID]['tmp_name'], $context['attach_dir'] . '/' . $attachID);
					$_SESSION['temp_attachments'][$attachID]['tmp_name'] = $context['attach_dir'] . '/' . $attachID;
					$_SESSION['temp_attachments'][$attachID]['id_folder'] = $modSettings['currentAttachmentUploadDir'];
					$context['dir_size'] = 0;
					$context['dir_files'] = 0;
				}
				// Or, let the user know that it ain't gonna happen.
				else
				{
					if (isset($context['dir_creation_error']))
						$_SESSION['temp_attachments'][$attachID]['errors'][] = $context['dir_creation_error'];
					else
						$_SESSION['temp_attachments'][$attachID]['errors'][] = 'ran_out_of_space';
				}
			}
			else
				$_SESSION['temp_attachments'][$attachID]['errors'][] = 'ran_out_of_space';
		}
	}

	// Is the file too big?
	$context['attachments']['total_size'] += $_SESSION['temp_attachments'][$attachID]['size'];
	if (!empty($modSettings['attachmentSizeLimit']) && $_SESSION['temp_attachments'][$attachID]['size'] > $modSettings['attachmentSizeLimit'] * 1024)
		$_SESSION['temp_attachments'][$attachID]['errors'][] = array('file_too_big', array(comma_format($modSettings['attachmentSizeLimit'], 0)));

	// Check the total upload size for this post...
	if (!empty($modSettings['attachmentPostLimit']) && $context['attachments']['total_size'] > $modSettings['attachmentPostLimit'] * 1024)
		$_SESSION['temp_attachments'][$attachID]['errors'][] = array('attach_max_total_file_size', array(comma_format($modSettings['attachmentPostLimit'], 0), comma_format($modSettings['attachmentPostLimit'] - (($context['attachments']['total_size'] - $_SESSION['temp_attachments'][$attachID]['size']) / 1024), 0)));

	// Have we reached the maximum number of files we are allowed?
	$context['attachments']['quantity']++;

	// Set a max limit if none exists
	if (empty($modSettings['attachmentNumPerPostLimit']) && $context['attachments']['quantity'] >= 50)
		$modSettings['attachmentNumPerPostLimit'] = 50;

	if (!empty($modSettings['attachmentNumPerPostLimit']) && $context['attachments']['quantity'] > $modSettings['attachmentNumPerPostLimit'])
		$_SESSION['temp_attachments'][$attachID]['errors'][] = array('attachments_limit_per_post', array($modSettings['attachmentNumPerPostLimit']));

	// File extension check
	if (!empty($modSettings['attachmentCheckExtensions']))
	{
		$allowed = explode(',', strtolower($modSettings['attachmentExtensions']));
		foreach ($allowed as $k => $dummy)
			$allowed[$k] = trim($dummy);

		if (!in_array(strtolower(substr(strrchr($_SESSION['temp_attachments'][$attachID]['name'], '.'), 1)), $allowed))
		{
			$allowed_extensions = strtr(strtolower($modSettings['attachmentExtensions']), array(',' => ', '));
			$_SESSION['temp_attachments'][$attachID]['errors'][] = array('cant_upload_type', array($allowed_extensions));
		}
	}

	// Undo the math if there's an error
	if (!empty($_SESSION['temp_attachments'][$attachID]['errors']))
	{
		if (isset($context['dir_size']))
			$context['dir_size'] -= $_SESSION['temp_attachments'][$attachID]['size'];
		if (isset($context['dir_files']))
			$context['dir_files']--;
		$context['attachments']['total_size'] -= $_SESSION['temp_attachments'][$attachID]['size'];
		$context['attachments']['quantity']--;
		return false;
	}

	return true;
}

/**
 * Create an attachment, with the given array of parameters.
 * - Adds any addtional or missing parameters to $attachmentOptions.
 * - Renames the temporary file.
 * - Creates a thumbnail if the file is an image and the option enabled.
 *
 * @param array $attachmentOptions
 */
function createAttachment(&$attachmentOptions)
{
	global $modSettings, $sourcedir, $smcFunc, $context;
	global $txt, $boarddir;

	require_once($sourcedir . '/Subs-Graphics.php');

	// These are the only valid image types for SMF.
	$validImageTypes = array(
		1 => 'gif',
		2 => 'jpeg',
		3 => 'png',
		5 => 'psd',
		6 => 'bmp',
		7 => 'tiff',
		8 => 'tiff',
		9 => 'jpeg',
		14 => 'iff'
	);

	// If this is an image we need to set a few additional parameters.
	$size = @getimagesize($attachmentOptions['tmp_name']);
	list ($attachmentOptions['width'], $attachmentOptions['height']) = $size;

	// If it's an image get the mime type right.
	if (empty($attachmentOptions['mime_type']) && $attachmentOptions['width'])
	{
		// Got a proper mime type?
		if (!empty($size['mime']))
			$attachmentOptions['mime_type'] = $size['mime'];
		// Otherwise a valid one?
		elseif (isset($validImageTypes[$size[2]]))
			$attachmentOptions['mime_type'] = 'image/' . $validImageTypes[$size[2]];
	}

	// Get the hash if no hash has been given yet.
	if (empty($attachmentOptions['file_hash']))
		$attachmentOptions['file_hash'] = getAttachmentFilename($attachmentOptions['name'], false, null, true);

	// Assuming no-one set the extension let's take a look at it.
	if (empty($attachmentOptions['fileext']))
	{
		$attachmentOptions['fileext'] = strtolower(strrpos($attachmentOptions['name'], '.') !== false ? substr($attachmentOptions['name'], strrpos($attachmentOptions['name'], '.') + 1) : '');
		if (strlen($attachmentOptions['fileext']) > 8 || '.' . $attachmentOptions['fileext'] == $attachmentOptions['name'])
			$attachmentOptions['fileext'] = '';
	}

	$smcFunc['db_insert']('',
		'{db_prefix}attachments',
		array(
			'id_folder' => 'int', 'id_msg' => 'int', 'filename' => 'string-255', 'file_hash' => 'string-40', 'fileext' => 'string-8',
			'size' => 'int', 'width' => 'int', 'height' => 'int',
			'mime_type' => 'string-20', 'approved' => 'int',
		),
		array(
			(int) $attachmentOptions['id_folder'], (int) $attachmentOptions['post'], $attachmentOptions['name'], $attachmentOptions['file_hash'], $attachmentOptions['fileext'],
			(int) $attachmentOptions['size'], (empty($attachmentOptions['width']) ? 0 : (int) $attachmentOptions['width']), (empty($attachmentOptions['height']) ? '0' : (int) $attachmentOptions['height']),
			(!empty($attachmentOptions['mime_type']) ? $attachmentOptions['mime_type'] : ''), (int) $attachmentOptions['approved'],
		),
		array('id_attach')
	);
	$attachmentOptions['id'] = $smcFunc['db_insert_id']('{db_prefix}attachments', 'id_attach');

	// @todo Add an error here maybe?
	if (empty($attachmentOptions['id']))
		return false;

	// Now that we have the attach id, let's rename this sucker and finish up.
	$attachmentOptions['destination'] = getAttachmentFilename(basename($attachmentOptions['name']), $attachmentOptions['id'], $attachmentOptions['id_folder'], false, $attachmentOptions['file_hash']);
	rename($attachmentOptions['tmp_name'], $attachmentOptions['destination']);

	// If it's not approved then add to the approval queue.
	if (!$attachmentOptions['approved'])
		$smcFunc['db_insert']('',
			'{db_prefix}approval_queue',
			array(
				'id_attach' => 'int', 'id_msg' => 'int',
			),
			array(
				$attachmentOptions['id'], (int) $attachmentOptions['post'],
			),
			array()
		);

	if (empty($modSettings['attachmentThumbnails']) || (empty($attachmentOptions['width']) && empty($attachmentOptions['height'])))
		return true;

	// Like thumbnails, do we?
	if (!empty($modSettings['attachmentThumbWidth']) && !empty($modSettings['attachmentThumbHeight']) && ($attachmentOptions['width'] > $modSettings['attachmentThumbWidth'] || $attachmentOptions['height'] > $modSettings['attachmentThumbHeight']))
	{
		if (createThumbnail($attachmentOptions['destination'], $modSettings['attachmentThumbWidth'], $modSettings['attachmentThumbHeight']))
		{
			// Figure out how big we actually made it.
			$size = @getimagesize($attachmentOptions['destination'] . '_thumb');
			list ($thumb_width, $thumb_height) = $size;

			if (!empty($size['mime']))
				$thumb_mime = $size['mime'];
			elseif (isset($validImageTypes[$size[2]]))
				$thumb_mime = 'image/' . $validImageTypes[$size[2]];
			// Lord only knows how this happened...
			else
				$thumb_mime = '';

			$thumb_filename = $attachmentOptions['name'] . '_thumb';
			$thumb_size = filesize($attachmentOptions['destination'] . '_thumb');
			$thumb_file_hash = getAttachmentFilename($thumb_filename, false, null, true);
			$thumb_path = $attachmentOptions['destination'] . '_thumb';

			// We should check the file size and count here since thumbs are added to the existing totals.
			if (!empty($modSettings['automanage_attachments']) && $modSettings['automanage_attachments'] == 1 && !empty($modSettings['attachmentDirSizeLimit']) || !empty($modSettings['attachmentDirFileLimit']))
			{
				$context['dir_size'] = isset($context['dir_size']) ? $context['dir_size'] += $thumb_size : $context['dir_size'] = 0;
				$context['dir_files'] = isset($context['dir_files']) ? $context['dir_files']++ : $context['dir_files'] = 0;

				// If the folder is full, try to create a new one and move the thumb to it.
				if ($context['dir_size'] > $modSettings['attachmentDirSizeLimit'] * 1024 || $context['dir_files'] + 2 > $modSettings['attachmentDirFileLimit'])
				{
					if (automanage_attachments_by_space())
					{
						rename($thumb_path, $context['attach_dir'] . '/' . $thumb_filename);
						$thumb_path = $context['attach_dir'] . '/' . $thumb_filename;
						$context['dir_size'] = 0;
						$context['dir_files'] = 0;
					}
				}
			}
			// If a new folder has been already created. Gotta move this thumb there then.
			if ($modSettings['currentAttachmentUploadDir'] != $attachmentOptions['id_folder'])
			{
				rename($thumb_path, $context['attach_dir'] . '/' . $thumb_filename);
				$thumb_path = $context['attach_dir'] . '/' . $thumb_filename;
			}

			// To the database we go!
			$smcFunc['db_insert']('',
				'{db_prefix}attachments',
				array(
					'id_folder' => 'int', 'id_msg' => 'int', 'attachment_type' => 'int', 'filename' => 'string-255', 'file_hash' => 'string-40', 'fileext' => 'string-8',
					'size' => 'int', 'width' => 'int', 'height' => 'int', 'mime_type' => 'string-20', 'approved' => 'int',
				),
				array(
					$modSettings['currentAttachmentUploadDir'], (int) $attachmentOptions['post'], 3, $thumb_filename, $thumb_file_hash, $attachmentOptions['fileext'],
					$thumb_size, $thumb_width, $thumb_height, $thumb_mime, (int) $attachmentOptions['approved'],
				),
				array('id_attach')
			);
			$attachmentOptions['thumb'] = $smcFunc['db_insert_id']('{db_prefix}attachments', 'id_attach');

			if (!empty($attachmentOptions['thumb']))
			{
				$smcFunc['db_query']('', '
					UPDATE {db_prefix}attachments
					SET id_thumb = {int:id_thumb}
					WHERE id_attach = {int:id_attach}',
					array(
						'id_thumb' => $attachmentOptions['thumb'],
						'id_attach' => $attachmentOptions['id'],
					)
				);

				rename($thumb_path, getAttachmentFilename($thumb_filename, $attachmentOptions['thumb'], $modSettings['currentAttachmentUploadDir'], false, $thumb_file_hash));
			}
		}
	}
	return true;
}

?>
Back to Top