summaryrefslogtreecommitdiffstats
path: root/application/controllers/file.php
blob: 5bd82971342727e2cfca45c35adf24009683449e (plain)
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
<?php
/*
 * Copyright 2009-2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
 *
 * Licensed under AGPLv3
 * (see COPYING for full license text)
 *
 */

class File extends CI_Controller {

	public $data = array();
	public $var;

	function __construct()
	{
		parent::__construct();

		$this->var = new StdClass();

		$this->load->library('migration');
		if ( ! $this->migration->current()) {
			show_error($this->migration->error_string());
		}

		$old_path = getenv("PATH");
		putenv("PATH=$old_path:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin");

		mb_internal_encoding('UTF-8');
		$this->load->helper(array('form', 'filebin'));
		$this->load->model('mfile');
		$this->load->model('muser');

		$this->var->latest_client = false;
		if (file_exists(FCPATH.'data/client/latest')) {
			$this->var->latest_client = trim(file_get_contents(FCPATH.'data/client/latest'));
		}


		if (is_cli_client()) {
			$this->var->view_dir = "file_plaintext";
		} else {
			$this->var->view_dir = "file";
		}

		$this->data['username'] = $this->muser->get_username();
		$this->data['title'] = "FileBin";
	}

	function index()
	{
		if ($this->input->is_cli_request()) {
			echo "php index.php file <function> [arguments]\n";
			echo "\n";
			echo "Functions:\n";
			echo "  cron               Cronjob\n";
			echo "  nuke_id <ID>       Nukes all IDs sharing the same hash\n";
			echo "\n";
			echo "Functions that shouldn't have to be run:\n";
			echo "  clean_stale_files     Remove files without database entries\n";
			echo "  update_file_metadata  Update filesize and mimetype in database\n";
			exit;
		}
		// Try to guess what the user would like to do.
		$id = $this->uri->segment(1);
		if(!empty($_FILES)) {
			$this->do_upload();
		} elseif ($id != "file" && $this->mfile->id_exists($id)) {
			$this->_download();
		} elseif ($id && $id != "file") {
			$this->_non_existent();
		} else {
			$this->upload_form();
		}
	}

	function _download()
	{
		$id = $this->uri->segment(1);
		$lexer = urldecode($this->uri->segment(2));

		$filedata = $this->mfile->get_filedata($id);
		$file = $this->mfile->file($filedata['hash']);

		if (!$this->mfile->valid_id($id)) {
			$this->_non_existent();
			return;
		}

		// don't allow unowned files to be downloaded
		if ($filedata["user"] == 0) {
			$this->_non_existent();
			return;
		}

		// helps to keep traffic low when reloading
		$etag = $filedata["hash"]."-".$filedata["date"];

		// autodetect the lexer for highlighting if the URL contains a / after the ID (/ID/)
		// /ID/lexer disables autodetection
		$autodetect_lexer = !$lexer && substr_count(ltrim($this->uri->uri_string(), "/"), '/') >= 1;

		if ($autodetect_lexer) {
			$lexer = $this->mfile->autodetect_lexer($filedata["mimetype"], $filedata["filename"]);
		}

		// resolve aliases
		// this is mainly used for compatibility
		$lexer = $this->mfile->resolve_lexer_alias($lexer);

		// create the qr code for /ID/
		if ($lexer == "qr") {
			handle_etag($etag);
			header("Content-disposition: inline; filename=\"".$id."_qr.png\"\n");
			header("Content-Type: image/png\n");
			passthru('qrencode -s 10 -o - '.escapeshellarg(site_url($id).'/'));
			exit();
		}

		// user wants the plain file
		if ($lexer == 'plain') {
			handle_etag($etag);
			rangeDownload($file, $filedata["filename"], "text/plain");
			exit();
		}

		if ($lexer == 'info') {
			$this->_display_info($id);
			return;
		}

		// if there is no mimetype mapping we can't highlight it
		$can_highlight = $this->mfile->can_highlight($filedata["mimetype"]);

		$filesize_too_big = filesize($file) > $this->config->item('upload_max_text_size');

		if (!$can_highlight || $filesize_too_big || !$lexer) {
			// prevent javascript from being executed and forbid frames
			// this should allow us to serve user submitted HTML content without huge security risks
			foreach (array("X-WebKit-CSP", "X-Content-Security-Policy") as $header_name) {
				header("$header_name: allow 'none'; img-src *; media-src *; font-src *; style-src * 'unsafe-inline'; script-src 'none'; object-src *; frame-src 'none'; ");
			}
			handle_etag($etag);
			rangeDownload($file, $filedata["filename"], $filedata["mimetype"]);
			exit();
		}

		$this->data['title'] = htmlspecialchars($filedata['filename']);
		$this->data['id'] = $id;

		header("Content-Type: text/html\n");

		$this->data['current_highlight'] = htmlspecialchars($lexer);
		$this->data['timeout'] = $this->mfile->get_timeout_string($id);
		$this->data['lexers'] = $this->mfile->get_lexers();
		$this->data['filedata'] = $filedata;

		// highlight the file and chache the result
		$this->load->library("MemcacheLibrary");
		if (! $cached = $this->memcachelibrary->get($filedata['hash'].'_'.$lexer)) {
			$cached = array();
			if ($lexer == "rmd") {
				ob_start();

				echo '<table class="content"><tr>';
				echo '<td class="markdownrender">'."\n";
				passthru('perl '.FCPATH.'scripts/Markdown.pl '.escapeshellarg($file), $cached["return_value"]);

				$cached["output"] = ob_get_contents();
				ob_end_clean();
			} elseif ($lexer == "ascii") {
				ob_start();

				echo '<table class="content"><tr>';
				echo '<td class="code"><pre class="text">'."\n";
				passthru('perl '.FCPATH.'scripts/ansi2html '.escapeshellarg($file), $cached["return_value"]);
				echo "</pre>\n";

				$cached["output"] = ob_get_contents();
				ob_end_clean();
			} else {
				$cached = $this->_pygmentize($file, $lexer);
			}

			if ($cached["return_value"] != 0) {
				$ret = $this->_pygmentize($file, "text");
				$cached["output"] = $ret["output"];
			}
			$this->memcachelibrary->set($filedata['hash'].'_'.$lexer, $cached, 100);
		}

		if ($cached["return_value"] != 0) {
			$this->data["error_message"] = "<p>Error trying to process the file.
				Either the lexer is unknown or something is broken.
				Falling back to plain text.</p>";
		}

		$this->load->view($this->var->view_dir.'/html_header', $this->data);
		$this->output->append_output($cached["output"]);
		$this->load->view($this->var->view_dir.'/html_footer', $this->data);
	}

	private function _pygmentize($file, $lexer)
	{
		$return_value = 0;
		$output = "";

		$output .= '<div class="code content table">'."\n";
		$output .= '<div class="highlight"><pre>'."\n";

		ob_start();
		passthru('pygmentize -F codetagify -O encoding=guess,outencoding=utf8 -l '.escapeshellarg($lexer).' -f html '.escapeshellarg($file), $return_value);
		$buf = ob_get_contents();
		ob_end_clean();


		$buf = explode("\n", $buf);
		$line_count = count($buf);

		// Last 2 items are just "</pre></div>" and ""
		// We don't need those
		unset($buf[$line_count - 2]);
		unset($buf[$line_count - 1]);

		foreach ($buf as $key => $line) {
			$line_number = $key + 1;
			if ($key == 0) {
				$line = str_replace("<div class=\"highlight\"><pre>", "", $line);
			}

			// Be careful not to add superflous whitespace here (we are in a <pre>)
			$output .= "<div class=\"table-row\">"
							."<a href=\"#n$line_number\" class=\"linenumber table-cell\">"
								."<span class=\"anchor\" id=\"n$line_number\"> </span>"
							."</a>"
							."<span class=\"line table-cell\">".$line."</span>\n";
			$output .= "</div>";
		}

		$output .= "</pre></div>";
		$output .= "</div>";

		return array(
			"return_value" => $return_value,
			"output" => $output
		);
	}

	function _display_info($id)
	{
		$this->data["title"] .= " - Info $id";
		$this->data["filedata"] = $this->mfile->get_filedata($id);
		$this->data["id"] = $id;
		$this->data['timeout'] = $this->mfile->get_timeout_string($id);

		$this->load->view('header', $this->data);
		$this->load->view($this->var->view_dir.'/file_info', $this->data);
		$this->load->view('footer', $this->data);
	}

	function _non_existent()
	{
		$this->data["title"] .= " - Not Found";
		$this->output->set_status_header(404);
		$this->load->view('header', $this->data);
		$this->load->view($this->var->view_dir.'/non_existent', $this->data);
		$this->load->view('footer', $this->data);
	}

	function _show_url($ids, $lexer)
	{
		$redirect = false;

		if (!$this->muser->logged_in()) {
			$this->muser->require_session();
			// keep the upload but require the user to login
			$this->session->set_userdata("last_upload", array(
				"ids" => $ids,
				"lexer" => $lexer
			));
			$this->session->set_flashdata("uri", "file/claim_id");
			$this->muser->require_access();
		}

		foreach ($ids as $id) {
			if ($lexer) {
				$this->data['urls'][] = site_url($id).'/'.$lexer;
			} else {
				$this->data['urls'][] = site_url($id).'/';

				if (count($ids) == 1) {
					$filedata = $this->mfile->get_filedata($id);
					$file = $this->mfile->file($filedata['hash']);
					$type = $filedata['mimetype'];
					$lexer = $this->mfile->should_highlight($type);

					// If we detected a highlightable file redirect,
					// otherwise show the URL because browsers would just show a DL dialog
					if ($lexer) {
						$redirect = true;
					}
				}
			}
		}

		if (is_cli_client()) {
			$redirect = false;
		}

		if ($redirect && count($ids) == 1) {
			redirect($this->data['urls'][0], "location", 303);
		} else {
			$this->load->view('header', $this->data);
			$this->load->view($this->var->view_dir.'/show_url', $this->data);
			$this->load->view('footer', $this->data);
		}
	}

	function client()
	{
		$this->data['title'] .= ' - Client';
		if ($this->var->latest_client) {
			$this->data['client_link'] = base_url().'data/client/fb-'.$this->var->latest_client.'.tar.gz';
		} else {
			$this->data['client_link'] = false;
		}
		$this->data['client_link_dir'] = base_url().'data/client/';
		$this->data['client_link_deb'] = base_url().'data/client/deb/';
		$this->data['client_link_slackware'] = base_url().'data/client/slackware/';

		if(preg_match('#^https?://(.*?)/.*$#', site_url(), $matches) === 1) {
			$this->data["domain"] = $matches[1];
		} else {
			$this->data["domain"] = "unknown domain";
		}

		if (!is_cli_client()) {
			$this->load->view('header', $this->data);
		}
		$this->load->view($this->var->view_dir.'/client', $this->data);
		if (!is_cli_client()) {
			$this->load->view('footer', $this->data);
		}
	}

	function upload_form()
	{
		$this->data['title'] .= ' - Upload';
		$this->data['small_upload_size'] = $this->config->item('small_upload_size');
		$this->data['max_upload_size'] = $this->config->item('upload_max_size');
		$this->data['upload_max_age'] = $this->config->item('upload_max_age')/60/60/24;
		$this->data['contact_me_url'] = $this->config->item('contact_me_url');

		$this->data['username'] = $this->muser->get_username();

		$this->load->view('header', $this->data);
		$this->load->view($this->var->view_dir.'/upload_form', $this->data);
		if (is_cli_client()) {
			$this->client();
		}
		$this->load->view('footer', $this->data);
	}

	// Allow CLI clients to query the server for the maxium filesize so they can
	// stop the upload before wasting time and bandwith
	function get_max_size()
	{
		echo $this->config->item('upload_max_size');
	}

	function upload_history()
	{
		$this->muser->require_access();

		$user = $this->muser->get_userid();

		$this->load->library("MemcacheLibrary");
		if (! $cached = $this->memcachelibrary->get("history_".$this->var->view_dir."_".$user)) {
			$query = array();
			$lengths = array();

			// key: database field name; value: display name
			$fields = array(
				"id" => "ID",
				"filename" => "Filename",
				"mimetype" => "Mimetype",
				"date" => "Date",
				"hash" => "Hash",
				"filesize" => "Size"
			);

			$this->data['title'] .= ' - Upload history';
			foreach($fields as $length_key => $value) {
				$lengths[$length_key] = mb_strlen($value);
			}

			$order = is_cli_client() ? "ASC" : "DESC";

			$query = $this->db->query("
				SELECT ".implode(",", array_keys($fields))."
				FROM files
				WHERE user = ?
				ORDER BY date $order
				", array($user))->result_array();

			foreach($query as $key => $item) {
				$query[$key]["date"] = date("r", $item["date"]);
				$query[$key]["filesize"] = format_bytes($item["filesize"]);
				if (is_cli_client()) {
					// Keep track of longest string to pad plaintext output correctly
					foreach($fields as $length_key => $value) {
						$len = mb_strlen($query[$key][$length_key]);
						if ($len > $lengths[$length_key]) {
							$lengths[$length_key] = $len;
						}
					}
				}
			}

			$total_size = $this->db->query("
				SELECT sum(filesize) sum
				FROM (
					SELECT filesize
					FROM files
					WHERE user = ?
					GROUP BY hash
				) sub
				", array($user))->row_array();

			$this->data["query"] = $query;
			$this->data["lengths"] = $lengths;
			$this->data["fields"] = $fields;
			$this->data["total_size"] = format_bytes($total_size["sum"]);

			$cached = "";
			$cached .= $this->load->view('header', $this->data, true);
			$cached .= $this->load->view($this->var->view_dir.'/upload_history', $this->data, true);
			$cached .= $this->load->view('footer', $this->data, true);

			// disable for now. reenable if it causes too much load
			//$this->memcachelibrary->set('history_'.$this->var->view_dir."_".$user, $cached, 42);
		}

		echo $cached;
	}

	function do_delete()
	{
		$this->muser->require_access();

		$ids = $this->input->post("ids");
		$errors = array();
		$msgs = array();
		$deleted_count = 0;
		$total_count = 0;

		if (!$ids) {
			show_error("No IDs specified");
		}

		foreach ($ids as $id) {
			$total_count++;

			if (!$this->mfile->id_exists($id)) {
				$errors[] = "'$id' didn't exist anymore.";
				continue;
			}

			if ($this->mfile->delete_id($id)) {
				$msgs[] = "'$id' has been removed.";
				$deleted_count++;
			} else {
				$errors[] = "'$id' couldn't be deleted.";
			}
		}

		$this->data["errors"] = $errors;
		$this->data["msgs"] = $msgs;
		$this->data["deleted_count"] = $deleted_count;
		$this->data["total_count"] = $total_count;

		$this->load->view('header', $this->data);
		$this->load->view($this->var->view_dir.'/deleted', $this->data);
		$this->load->view('footer', $this->data);
	}

	function delete()
	{
		$this->muser->require_access();

		if (!is_cli_client()) {
			echo "Not a listed cli client, please use the history to delete uploads.\n";
			return;
		}

		$id = $this->uri->segment(3);
		$this->data["id"] = $id;

		if ($id && !$this->mfile->id_exists($id)) {
			$this->output->set_status_header(404);
			echo "Unknown ID '$id'.\n";
			return;
		}

		if ($this->mfile->delete_id($id)) {
			echo "$id has been deleted.\n";
		} else {
			echo "Deletion failed. Do you really own that file?\n";
		}
	}

	// Handle pastes
	function do_paste()
	{
		$content = $this->input->post("content");
		$filesize = strlen($content);
		$filename = "stdin";

		if(!$content) {
			$this->output->set_status_header(400);
			$this->data["msg"] = "Nothing was pasted, content is empty.";
			$this->load->view('header', $this->data);
			$this->load->view($this->var->view_dir.'/upload_error', $this->data);
			$this->load->view('footer');
			return;
		}

		if ($filesize > $this->config->item('upload_max_size')) {
			$this->output->set_status_header(413);
			$this->load->view('header', $this->data);
			$this->load->view($this->var->view_dir.'/too_big');
			$this->load->view('footer');
			return;
		}

		$id = $this->mfile->new_id();
		$hash = md5($content);

		$folder = $this->mfile->folder($hash);
		file_exists($folder) || mkdir ($folder);
		$file = $this->mfile->file($hash);

		file_put_contents($file, $content);
		chmod($file, 0600);
		$this->mfile->add_file($hash, $id, $filename);
		$this->_show_url(array($id), false);
	}

	// Handles uploaded files
	function do_upload()
	{
		$ids = array();

		$extension = $this->input->post('extension');

		$files = getNormalizedFILES();

		if (empty($files)) {
			show_error("No file was uploaded or unknown error occured.");
		}

		// Check for errors before doing anything
		// First error wins and is displayed, these shouldn't happen that often anyway.
		foreach ($files as $key => $file) {
			// getNormalizedFILES() removes any file with error == 4
			if ($file['error'] !== 0) {
				$this->output->set_status_header(400);
				$errors = array(
					0=>"There is no error, the file uploaded with success",
					1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
					2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
					3=>"The uploaded file was only partially uploaded",
					4=>"No file was uploaded",
					6=>"Missing a temporary folder"
				);

				$this->data["msg"] = "Unknown error.";

				if (isset($file)) {
					$this->data["msg"] = $errors[$file['error']];
				}
				$this->load->view('header', $this->data);
				$this->load->view($this->var->view_dir.'/upload_error', $this->data);
				$this->load->view('footer');
				return;
			}

			$filesize = filesize($file['tmp_name']);
			if ($filesize > $this->config->item('upload_max_size')) {
				$this->output->set_status_header(413);
				$this->load->view('header', $this->data);
				$this->load->view($this->var->view_dir.'/too_big');
				$this->load->view('footer');
				return;
			}
		}

		foreach ($files as $key => $file) {
			$id = $this->mfile->new_id();
			$hash = md5_file($file['tmp_name']);

			// work around a curl bug and allow the client to send the real filename base64 encoded
			// TODO: this interface currently sets the same filename for every file if you use multiupload
			$filename = $this->input->post("filename");
			if ($filename !== false) {
				$filename = trim(base64_decode($filename, true), "\r\n\0\t\x0B");
			}

			// fall back if base64_decode failed
			if ($filename === false) {
				$filename = $file['name'];
			}

			$folder = $this->mfile->folder($hash);
			file_exists($folder) || mkdir ($folder);
			$file_path = $this->mfile->file($hash);

			move_uploaded_file($file['tmp_name'], $file_path);
			chmod($file_path, 0600);
			$this->mfile->add_file($hash, $id, $filename);
			$ids[] = $id;
		}

		$this->_show_url($ids, $extension);
	}

	function claim_id()
	{
		$this->muser->require_access();

		$last_upload = $this->session->userdata("last_upload");
		$ids = $last_upload["ids"];
		$errors = array();

		foreach ($ids as $key => $id) {
			$filedata = $this->mfile->get_filedata($id);

			if ($filedata["user"] != 0) {
				$errors[] = $id;
			}

			$this->mfile->adopt($id);
		}

		if (!empty($errors)) {
			show_error("Someone already owns '".implode(", ", $errors)."', can't reassign.");
		}

		$this->session->unset_userdata("last_upload");

		$this->_show_url($ids, $last_upload["lexer"]);
	}

	/* Functions below this comment can only be run via the CLI
	 * `php index.php file <function name>`
	 */

	// Removes old files
	function cron()
	{
		if (!$this->input->is_cli_request()) return;

		if ($this->config->item('upload_max_age') == 0) return;

		$oldest_time = (time() - $this->config->item('upload_max_age'));
		$oldest_session_time = (time() - $this->config->item("sess_expiration"));

		$small_upload_size = $this->config->item('small_upload_size');

		$query = $this->db->query('
			SELECT hash, id, user
			FROM files
			WHERE date < ? OR (user = 0 AND date < ?)',
				array($oldest_time, $oldest_session_time));

		foreach($query->result_array() as $row) {
			$file = $this->mfile->file($row['hash']);
			if (!file_exists($file)) {
				$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
				continue;
			}

			if ($row["user"] == 0 || filesize($file) > $small_upload_size) {
				if (filemtime($file) < $oldest_time) {
					unlink($file);
					$this->db->query('DELETE FROM files WHERE hash = ?', array($row['hash']));
				} else {
					$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
					if ($this->mfile->stale_hash($row["hash"])) {
						unlink($file);
					}
				}
			}
		}
	}

	/* remove files without database entries */
	function clean_stale_files()
	{
		if (!$this->input->is_cli_request()) return;

		$upload_path = $this->config->item("upload_path");
		$outer_dh = opendir($upload_path);

		while (($dir = readdir($outer_dh)) !== false) {
			if (!is_dir($upload_path."/".$dir) || $dir == ".." || $dir == ".") {
				continue;
			}

			$dh = opendir($upload_path."/".$dir);

			$empty = true;

			while (($file = readdir($dh)) !== false) {
				if ($file == ".." || $file == ".") {
					continue;
				}

				$query = $this->db->query("SELECT hash FROM files WHERE hash = ? LIMIT 1", array($file))->row_array();

				if (empty($query)) {
					unlink($upload_path."/".$dir."/".$file);
				} else {
					$empty = false;
				}
			}

			closedir($dh);

			if ($empty) {
				rmdir($upload_path."/".$dir);
			}
		}
		closedir($outer_dh);
	}

	function nuke_id()
	{
		if (!$this->input->is_cli_request()) return;

		$id = $this->uri->segment(3);


		$file_data = $this->mfile->get_filedata($id);

		if (empty($file_data)) {
			echo "unknown id \"$id\"\n";
			return;
		}

		$hash = $file_data["hash"];

		$this->db->query("
			DELETE FROM files
			WHERE hash = ?
			", array($hash));

		unlink($this->mfile->file($hash));

		echo "removed hash \"$hash\"\n";
	}

	function update_file_metadata()
	{
		if (!$this->input->is_cli_request()) return;

		$chunk = 500;

		$total = $this->db->count_all("files");

		for ($limit = 0; $limit < $total; $limit += $chunk) {
			$query = $this->db->query("
				SELECT hash
				FROM files
				GROUP BY hash
				LIMIT $limit, $chunk
				")->result_array();

			foreach ($query as $key => $item) {
				$hash = $item["hash"];
				$filesize = intval(filesize($this->mfile->file($hash)));
				$mimetype = $this->mfile->mimetype($this->mfile->file($hash));

				$this->db->query("
					UPDATE files
					SET filesize = ?, mimetype = ?
					WHERE hash = ?
					", array($filesize, $mimetype, $hash));
			}
		}
	}
}

# vim: set noet: