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comparison plugins/acl/acl.php @ 0:1e000243b222

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vanilla 1.3.3 distro, I hope
author Charlie Root
date Thu, 04 Jan 2018 15:50:29 -0500
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-1:000000000000 0:1e000243b222
1 <?php
2
3 /**
4 * Folders Access Control Lists Management (RFC4314, RFC2086)
5 *
6 * @author Aleksander Machniak <alec@alec.pl>
7 *
8 * Copyright (C) 2011-2012, Kolab Systems AG
9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see http://www.gnu.org/licenses/.
22 */
23
24 class acl extends rcube_plugin
25 {
26 public $task = 'settings|addressbook|calendar';
27
28 private $rc;
29 private $supported = null;
30 private $mbox;
31 private $ldap;
32 private $specials = array('anyone', 'anonymous');
33
34 /**
35 * Plugin initialization
36 */
37 function init()
38 {
39 $this->rc = rcmail::get_instance();
40
41 // Register hooks
42 $this->add_hook('folder_form', array($this, 'folder_form'));
43 // kolab_addressbook plugin
44 $this->add_hook('addressbook_form', array($this, 'folder_form'));
45 $this->add_hook('calendar_form_kolab', array($this, 'folder_form'));
46 // Plugin actions
47 $this->register_action('plugin.acl', array($this, 'acl_actions'));
48 $this->register_action('plugin.acl-autocomplete', array($this, 'acl_autocomplete'));
49 }
50
51 /**
52 * Handler for plugin actions (AJAX)
53 */
54 function acl_actions()
55 {
56 $action = trim(rcube_utils::get_input_value('_act', rcube_utils::INPUT_GPC));
57
58 // Connect to IMAP
59 $this->rc->storage_init();
60
61 // Load localization and configuration
62 $this->add_texts('localization/');
63 $this->load_config();
64
65 if ($action == 'save') {
66 $this->action_save();
67 }
68 else if ($action == 'delete') {
69 $this->action_delete();
70 }
71 else if ($action == 'list') {
72 $this->action_list();
73 }
74
75 // Only AJAX actions
76 $this->rc->output->send();
77 }
78
79 /**
80 * Handler for user login autocomplete request
81 */
82 function acl_autocomplete()
83 {
84 $this->load_config();
85
86 $search = rcube_utils::get_input_value('_search', rcube_utils::INPUT_GPC, true);
87 $reqid = rcube_utils::get_input_value('_reqid', rcube_utils::INPUT_GPC);
88 $users = array();
89 $keys = array();
90
91 if ($this->init_ldap()) {
92 $max = (int) $this->rc->config->get('autocomplete_max', 15);
93 $mode = (int) $this->rc->config->get('addressbook_search_mode');
94
95 $this->ldap->set_pagesize($max);
96 $result = $this->ldap->search('*', $search, $mode);
97
98 foreach ($result->records as $record) {
99 $user = $record['uid'];
100
101 if (is_array($user)) {
102 $user = array_filter($user);
103 $user = $user[0];
104 }
105
106 if ($user) {
107 $display = rcube_addressbook::compose_search_name($record);
108 $user = array('name' => $user, 'display' => $display);
109 $users[] = $user;
110 $keys[] = $display ?: $user['name'];
111 }
112 }
113
114 if ($this->rc->config->get('acl_groups')) {
115 $prefix = $this->rc->config->get('acl_group_prefix');
116 $group_field = $this->rc->config->get('acl_group_field', 'name');
117 $result = $this->ldap->list_groups($search, $mode);
118
119 foreach ($result as $record) {
120 $group = $record['name'];
121 $group_id = is_array($record[$group_field]) ? $record[$group_field][0] : $record[$group_field];
122
123 if ($group) {
124 $users[] = array('name' => ($prefix ?: '') . $group_id, 'display' => $group, 'type' => 'group');
125 $keys[] = $group;
126 }
127 }
128 }
129 }
130
131 if (count($users)) {
132 // sort users index
133 asort($keys, SORT_LOCALE_STRING);
134 // re-sort users according to index
135 foreach ($keys as $idx => $val) {
136 $keys[$idx] = $users[$idx];
137 }
138 $users = array_values($keys);
139 }
140
141 $this->rc->output->command('ksearch_query_results', $users, $search, $reqid);
142 $this->rc->output->send();
143 }
144
145 /**
146 * Handler for 'folder_form' hook
147 *
148 * @param array $args Hook arguments array (form data)
149 *
150 * @return array Hook arguments array
151 */
152 function folder_form($args)
153 {
154 $mbox_imap = $args['options']['name'];
155 $myrights = $args['options']['rights'];
156
157 // Edited folder name (empty in create-folder mode)
158 if (!strlen($mbox_imap)) {
159 return $args;
160 }
161 /*
162 // Do nothing on protected folders (?)
163 if ($args['options']['protected']) {
164 return $args;
165 }
166 */
167 // Get MYRIGHTS
168 if (empty($myrights)) {
169 return $args;
170 }
171
172 // Load localization and include scripts
173 $this->load_config();
174 $this->specials = $this->rc->config->get('acl_specials', $this->specials);
175 $this->add_texts('localization/', array('deleteconfirm', 'norights',
176 'nouser', 'deleting', 'saving', 'newuser', 'editperms'));
177 $this->rc->output->add_label('save', 'cancel');
178 $this->include_script('acl.js');
179 $this->rc->output->include_script('list.js');
180 $this->include_stylesheet($this->local_skin_path().'/acl.css');
181
182 // add Info fieldset if it doesn't exist
183 if (!isset($args['form']['props']['fieldsets']['info']))
184 $args['form']['props']['fieldsets']['info'] = array(
185 'name' => $this->rc->gettext('info'),
186 'content' => array());
187
188 // Display folder rights to 'Info' fieldset
189 $args['form']['props']['fieldsets']['info']['content']['myrights'] = array(
190 'label' => rcube::Q($this->gettext('myrights')),
191 'value' => $this->acl2text($myrights)
192 );
193
194 // Return if not folder admin
195 if (!in_array('a', $myrights)) {
196 return $args;
197 }
198
199 // The 'Sharing' tab
200 $this->mbox = $mbox_imap;
201 $this->rc->output->set_env('acl_users_source', (bool) $this->rc->config->get('acl_users_source'));
202 $this->rc->output->set_env('mailbox', $mbox_imap);
203 $this->rc->output->add_handlers(array(
204 'acltable' => array($this, 'templ_table'),
205 'acluser' => array($this, 'templ_user'),
206 'aclrights' => array($this, 'templ_rights'),
207 ));
208
209 $this->rc->output->set_env('autocomplete_max', (int)$this->rc->config->get('autocomplete_max', 15));
210 $this->rc->output->set_env('autocomplete_min_length', $this->rc->config->get('autocomplete_min_length'));
211 $this->rc->output->add_label('autocompletechars', 'autocompletemore');
212
213 $args['form']['sharing'] = array(
214 'name' => rcube::Q($this->gettext('sharing')),
215 'content' => $this->rc->output->parse('acl.table', false, false),
216 );
217
218 return $args;
219 }
220
221 /**
222 * Creates ACL rights table
223 *
224 * @param array $attrib Template object attributes
225 *
226 * @return string HTML Content
227 */
228 function templ_table($attrib)
229 {
230 if (empty($attrib['id']))
231 $attrib['id'] = 'acl-table';
232
233 $out = $this->list_rights($attrib);
234
235 $this->rc->output->add_gui_object('acltable', $attrib['id']);
236
237 return $out;
238 }
239
240 /**
241 * Creates ACL rights form (rights list part)
242 *
243 * @param array $attrib Template object attributes
244 *
245 * @return string HTML Content
246 */
247 function templ_rights($attrib)
248 {
249 // Get supported rights
250 $supported = $this->rights_supported();
251
252 // give plugins the opportunity to adjust this list
253 $data = $this->rc->plugins->exec_hook('acl_rights_supported',
254 array('rights' => $supported, 'folder' => $this->mbox, 'labels' => array()));
255 $supported = $data['rights'];
256
257 // depending on server capability either use 'te' or 'd' for deleting msgs
258 $deleteright = implode(array_intersect(str_split('ted'), $supported));
259
260 $out = '';
261 $ul = '';
262 $input = new html_checkbox();
263
264 // Advanced rights
265 $attrib['id'] = 'advancedrights';
266 foreach ($supported as $key => $val) {
267 $id = "acl$val";
268 $ul .= html::tag('li', null,
269 $input->show('', array(
270 'name' => "acl[$val]", 'value' => $val, 'id' => $id))
271 . html::label(array('for' => $id, 'title' => $this->gettext('longacl'.$val)),
272 $this->gettext('acl'.$val)));
273 }
274
275 $out = html::tag('ul', $attrib, $ul, html::$common_attrib);
276
277 // Simple rights
278 $ul = '';
279 $attrib['id'] = 'simplerights';
280 $items = array(
281 'read' => 'lrs',
282 'write' => 'wi',
283 'delete' => $deleteright,
284 'other' => preg_replace('/[lrswi'.$deleteright.']/', '', implode($supported)),
285 );
286
287 // give plugins the opportunity to adjust this list
288 $data = $this->rc->plugins->exec_hook('acl_rights_simple',
289 array('rights' => $items, 'folder' => $this->mbox, 'labels' => array(), 'titles' => array()));
290
291 foreach ($data['rights'] as $key => $val) {
292 $id = "acl$key";
293 $ul .= html::tag('li', null,
294 $input->show('', array(
295 'name' => "acl[$val]", 'value' => $val, 'id' => $id))
296 . html::label(array('for' => $id, 'title' => $data['titles'][$key] ?: $this->gettext('longacl'.$key)),
297 $data['labels'][$key] ?: $this->gettext('acl'.$key)));
298 }
299
300 $out .= "\n" . html::tag('ul', $attrib, $ul, html::$common_attrib);
301
302 $this->rc->output->set_env('acl_items', $data['rights']);
303
304 return $out;
305 }
306
307 /**
308 * Creates ACL rights form (user part)
309 *
310 * @param array $attrib Template object attributes
311 *
312 * @return string HTML Content
313 */
314 function templ_user($attrib)
315 {
316 // Create username input
317 $attrib['name'] = 'acluser';
318
319 $textfield = new html_inputfield($attrib);
320
321 $fields['user'] = html::label(array('for' => $attrib['id']), $this->gettext('username'))
322 . ' ' . $textfield->show();
323
324 // Add special entries
325 if (!empty($this->specials)) {
326 foreach ($this->specials as $key) {
327 $fields[$key] = html::label(array('for' => 'id'.$key), $this->gettext($key));
328 }
329 }
330
331 $this->rc->output->set_env('acl_specials', $this->specials);
332
333 // Create list with radio buttons
334 if (count($fields) > 1) {
335 $ul = '';
336 $radio = new html_radiobutton(array('name' => 'usertype'));
337 foreach ($fields as $key => $val) {
338 $ul .= html::tag('li', null, $radio->show($key == 'user' ? 'user' : '',
339 array('value' => $key, 'id' => 'id'.$key))
340 . $val);
341 }
342
343 $out = html::tag('ul', array('id' => 'usertype', 'class' => $attrib['class']), $ul, html::$common_attrib);
344 }
345 // Display text input alone
346 else {
347 $out = $fields['user'];
348 }
349
350 return $out;
351 }
352
353 /**
354 * Creates ACL rights table
355 *
356 * @param array $attrib Template object attributes
357 *
358 * @return string HTML Content
359 */
360 private function list_rights($attrib=array())
361 {
362 // Get ACL for the folder
363 $acl = $this->rc->storage->get_acl($this->mbox);
364
365 if (!is_array($acl)) {
366 $acl = array();
367 }
368
369 // Keep special entries (anyone/anonymous) on top of the list
370 if (!empty($this->specials) && !empty($acl)) {
371 foreach ($this->specials as $key) {
372 if (isset($acl[$key])) {
373 $acl_special[$key] = $acl[$key];
374 unset($acl[$key]);
375 }
376 }
377 }
378
379 // Sort the list by username
380 uksort($acl, 'strnatcasecmp');
381
382 if (!empty($acl_special)) {
383 $acl = array_merge($acl_special, $acl);
384 }
385
386 // Get supported rights and build column names
387 $supported = $this->rights_supported();
388
389 // give plugins the opportunity to adjust this list
390 $data = $this->rc->plugins->exec_hook('acl_rights_supported',
391 array('rights' => $supported, 'folder' => $this->mbox, 'labels' => array()));
392 $supported = $data['rights'];
393
394 // depending on server capability either use 'te' or 'd' for deleting msgs
395 $deleteright = implode(array_intersect(str_split('ted'), $supported));
396
397 // Use advanced or simple (grouped) rights
398 $advanced = $this->rc->config->get('acl_advanced_mode');
399
400 if ($advanced) {
401 $items = array();
402 foreach ($supported as $sup) {
403 $items[$sup] = $sup;
404 }
405 }
406 else {
407 $items = array(
408 'read' => 'lrs',
409 'write' => 'wi',
410 'delete' => $deleteright,
411 'other' => preg_replace('/[lrswi'.$deleteright.']/', '', implode($supported)),
412 );
413
414 // give plugins the opportunity to adjust this list
415 $data = $this->rc->plugins->exec_hook('acl_rights_simple',
416 array('rights' => $items, 'folder' => $this->mbox, 'labels' => array()));
417 $items = $data['rights'];
418 }
419
420 // Create the table
421 $attrib['noheader'] = true;
422 $table = new html_table($attrib);
423
424 // Create table header
425 $table->add_header('user', $this->gettext('identifier'));
426 foreach (array_keys($items) as $key) {
427 $label = $data['labels'][$key] ?: $this->gettext('shortacl'.$key);
428 $table->add_header(array('class' => 'acl'.$key, 'title' => $label), $label);
429 }
430
431 $js_table = array();
432 foreach ($acl as $user => $rights) {
433 if ($this->rc->storage->conn->user == $user) {
434 continue;
435 }
436
437 // filter out virtual rights (c or d) the server may return
438 $userrights = array_intersect($rights, $supported);
439 $userid = rcube_utils::html_identifier($user);
440
441 if (!empty($this->specials) && in_array($user, $this->specials)) {
442 $user = $this->gettext($user);
443 }
444
445 $table->add_row(array('id' => 'rcmrow'.$userid));
446 $table->add('user', html::a(array('id' => 'rcmlinkrow'.$userid), rcube::Q($user)));
447
448 foreach ($items as $key => $right) {
449 $in = $this->acl_compare($userrights, $right);
450 switch ($in) {
451 case 2: $class = 'enabled'; break;
452 case 1: $class = 'partial'; break;
453 default: $class = 'disabled'; break;
454 }
455 $table->add('acl' . $key . ' ' . $class, '');
456 }
457
458 $js_table[$userid] = implode($userrights);
459 }
460
461 $this->rc->output->set_env('acl', $js_table);
462 $this->rc->output->set_env('acl_advanced', $advanced);
463
464 $out = $table->show();
465
466 return $out;
467 }
468
469 /**
470 * Handler for ACL update/create action
471 */
472 private function action_save()
473 {
474 $mbox = trim(rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST, true)); // UTF7-IMAP
475 $user = trim(rcube_utils::get_input_value('_user', rcube_utils::INPUT_POST));
476 $acl = trim(rcube_utils::get_input_value('_acl', rcube_utils::INPUT_POST));
477 $oldid = trim(rcube_utils::get_input_value('_old', rcube_utils::INPUT_POST));
478
479 $acl = array_intersect(str_split($acl), $this->rights_supported());
480 $users = $oldid ? array($user) : explode(',', $user);
481 $result = 0;
482
483 foreach ($users as $user) {
484 $user = trim($user);
485 $prefix = $this->rc->config->get('acl_groups') ? $this->rc->config->get('acl_group_prefix') : '';
486
487 if ($prefix && strpos($user, $prefix) === 0) {
488 $username = $user;
489 }
490 else if (!empty($this->specials) && in_array($user, $this->specials)) {
491 $username = $this->gettext($user);
492 }
493 else if (!empty($user)) {
494 if (!strpos($user, '@') && ($realm = $this->get_realm())) {
495 $user .= '@' . rcube_utils::idn_to_ascii(preg_replace('/^@/', '', $realm));
496 }
497 $username = $user;
498 }
499
500 if (!$acl || !$user || !strlen($mbox)) {
501 continue;
502 }
503
504 $user = $this->mod_login($user);
505 $username = $this->mod_login($username);
506
507 if ($user != $_SESSION['username'] && $username != $_SESSION['username']) {
508 if ($this->rc->storage->set_acl($mbox, $user, $acl)) {
509 $ret = array('id' => rcube_utils::html_identifier($user),
510 'username' => $username, 'acl' => implode($acl), 'old' => $oldid);
511 $this->rc->output->command('acl_update', $ret);
512 $result++;
513 }
514 }
515 }
516
517 if ($result) {
518 $this->rc->output->show_message($oldid ? 'acl.updatesuccess' : 'acl.createsuccess', 'confirmation');
519 }
520 else {
521 $this->rc->output->show_message($oldid ? 'acl.updateerror' : 'acl.createerror', 'error');
522 }
523 }
524
525 /**
526 * Handler for ACL delete action
527 */
528 private function action_delete()
529 {
530 $mbox = trim(rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST, true)); //UTF7-IMAP
531 $user = trim(rcube_utils::get_input_value('_user', rcube_utils::INPUT_POST));
532
533 $user = explode(',', $user);
534
535 foreach ($user as $u) {
536 $u = trim($u);
537 if ($this->rc->storage->delete_acl($mbox, $u)) {
538 $this->rc->output->command('acl_remove_row', rcube_utils::html_identifier($u));
539 }
540 else {
541 $error = true;
542 }
543 }
544
545 if (!$error) {
546 $this->rc->output->show_message('acl.deletesuccess', 'confirmation');
547 }
548 else {
549 $this->rc->output->show_message('acl.deleteerror', 'error');
550 }
551 }
552
553 /**
554 * Handler for ACL list update action (with display mode change)
555 */
556 private function action_list()
557 {
558 if (in_array('acl_advanced_mode', (array)$this->rc->config->get('dont_override'))) {
559 return;
560 }
561
562 $this->mbox = trim(rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_GPC, true)); // UTF7-IMAP
563 $advanced = trim(rcube_utils::get_input_value('_mode', rcube_utils::INPUT_GPC));
564 $advanced = $advanced == 'advanced';
565
566 // Save state in user preferences
567 $this->rc->user->save_prefs(array('acl_advanced_mode' => $advanced));
568
569 $out = $this->list_rights();
570
571 $out = preg_replace(array('/^<table[^>]+>/', '/<\/table>$/'), '', $out);
572
573 $this->rc->output->command('acl_list_update', $out);
574 }
575
576 /**
577 * Creates <UL> list with descriptive access rights
578 *
579 * @param array $rights MYRIGHTS result
580 *
581 * @return string HTML content
582 */
583 function acl2text($rights)
584 {
585 if (empty($rights)) {
586 return '';
587 }
588
589 $supported = $this->rights_supported();
590 $list = array();
591 $attrib = array(
592 'name' => 'rcmyrights',
593 'style' => 'margin:0; padding:0 15px;',
594 );
595
596 foreach ($supported as $right) {
597 if (in_array($right, $rights)) {
598 $list[] = html::tag('li', null, rcube::Q($this->gettext('acl' . $right)));
599 }
600 }
601
602 if (count($list) == count($supported))
603 return rcube::Q($this->gettext('aclfull'));
604
605 return html::tag('ul', $attrib, implode("\n", $list));
606 }
607
608 /**
609 * Compares two ACLs (according to supported rights)
610 *
611 * @param array $acl1 ACL rights array (or string)
612 * @param array $acl2 ACL rights array (or string)
613 *
614 * @param int Comparison result, 2 - full match, 1 - partial match, 0 - no match
615 */
616 function acl_compare($acl1, $acl2)
617 {
618 if (!is_array($acl1)) $acl1 = str_split($acl1);
619 if (!is_array($acl2)) $acl2 = str_split($acl2);
620
621 $rights = $this->rights_supported();
622
623 $acl1 = array_intersect($acl1, $rights);
624 $acl2 = array_intersect($acl2, $rights);
625 $res = array_intersect($acl1, $acl2);
626
627 $cnt1 = count($res);
628 $cnt2 = count($acl2);
629
630 if ($cnt1 == $cnt2)
631 return 2;
632 else if ($cnt1)
633 return 1;
634 else
635 return 0;
636 }
637
638 /**
639 * Get list of supported access rights (according to RIGHTS capability)
640 *
641 * @return array List of supported access rights abbreviations
642 */
643 function rights_supported()
644 {
645 if ($this->supported !== null) {
646 return $this->supported;
647 }
648
649 $capa = $this->rc->storage->get_capability('RIGHTS');
650
651 if (is_array($capa)) {
652 $rights = strtolower($capa[0]);
653 }
654 else {
655 $rights = 'cd';
656 }
657
658 return $this->supported = str_split('lrswi' . $rights . 'pa');
659 }
660
661 /**
662 * Username realm detection.
663 *
664 * @return string Username realm (domain)
665 */
666 private function get_realm()
667 {
668 // When user enters a username without domain part, realm
669 // allows to add it to the username (and display correct username in the table)
670
671 if (isset($_SESSION['acl_username_realm'])) {
672 return $_SESSION['acl_username_realm'];
673 }
674
675 // find realm in username of logged user (?)
676 list($name, $domain) = explode('@', $_SESSION['username']);
677
678 // Use (always existent) ACL entry on the INBOX for the user to determine
679 // whether or not the user ID in ACL entries need to be qualified and how
680 // they would need to be qualified.
681 if (empty($domain)) {
682 $acl = $this->rc->storage->get_acl('INBOX');
683 if (is_array($acl)) {
684 $regexp = '/^' . preg_quote($_SESSION['username'], '/') . '@(.*)$/';
685 foreach (array_keys($acl) as $name) {
686 if (preg_match($regexp, $name, $matches)) {
687 $domain = $matches[1];
688 break;
689 }
690 }
691 }
692 }
693
694 return $_SESSION['acl_username_realm'] = $domain;
695 }
696
697 /**
698 * Initializes autocomplete LDAP backend
699 */
700 private function init_ldap()
701 {
702 if ($this->ldap) {
703 return $this->ldap->ready;
704 }
705
706 // get LDAP config
707 $config = $this->rc->config->get('acl_users_source');
708
709 if (empty($config)) {
710 return false;
711 }
712
713 // not an array, use configured ldap_public source
714 if (!is_array($config)) {
715 $ldap_config = (array) $this->rc->config->get('ldap_public');
716 $config = $ldap_config[$config];
717 }
718
719 $uid_field = $this->rc->config->get('acl_users_field', 'mail');
720 $filter = $this->rc->config->get('acl_users_filter');
721
722 if (empty($uid_field) || empty($config)) {
723 return false;
724 }
725
726 // get name attribute
727 if (!empty($config['fieldmap'])) {
728 $name_field = $config['fieldmap']['name'];
729 }
730 // ... no fieldmap, use the old method
731 if (empty($name_field)) {
732 $name_field = $config['name_field'];
733 }
734
735 // add UID field to fieldmap, so it will be returned in a record with name
736 $config['fieldmap']['name'] = $name_field;
737 $config['fieldmap']['uid'] = $uid_field;
738
739 // search in UID and name fields
740 // $name_field can be in a form of <field>:<modifier> (#1490591)
741 $name_field = preg_replace('/:.*$/', '', $name_field);
742 $search = array_unique(array($name_field, $uid_field));
743
744 $config['search_fields'] = $search;
745 $config['required_fields'] = array($uid_field);
746
747 // set search filter
748 if ($filter) {
749 $config['filter'] = $filter;
750 }
751
752 // disable vlv
753 $config['vlv'] = false;
754
755 // Initialize LDAP connection
756 $this->ldap = new rcube_ldap($config,
757 $this->rc->config->get('ldap_debug'),
758 $this->rc->config->mail_domain($_SESSION['imap_host']));
759
760 return $this->ldap->ready;
761 }
762
763 /**
764 * Modify user login according to 'login_lc' setting
765 */
766 protected function mod_login($user)
767 {
768 $login_lc = $this->rc->config->get('login_lc');
769
770 if ($login_lc === true || $login_lc == 2) {
771 $user = mb_strtolower($user);
772 }
773 // lowercase domain name
774 else if ($login_lc && strpos($user, '@')) {
775 list($local, $domain) = explode('@', $user);
776 $user = $local . '@' . mb_strtolower($domain);
777 }
778
779 return $user;
780 }
781 }