Marius Burkard
2016-04-20 4569cae57f127afd093794310ccd290d2d9fdf36
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
<?php
 
/*
Copyright (c) 2007, Till Brehm, projektfarm Gmbh
All rights reserved.
 
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
 
    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name of ISPConfig nor the names of its contributors
      may be used to endorse or promote products derived from this software without
      specific prior written permission.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
class mysql_clientdb_plugin {
 
    var $plugin_name = 'mysql_clientdb_plugin';
    var $class_name  = 'mysql_clientdb_plugin';
 
    //* This function is called during ispconfig installation to determine
    //  if a symlink shall be created for this plugin.
    function onInstall() {
        global $conf;
 
        if($conf['services']['db'] == true) {
            return true;
        } else {
            return false;
        }
 
    }
 
 
    /*
         This function is called when the plugin is loaded
    */
 
    function onLoad() {
        global $app;
 
        /*
        Register for the events
        */
 
        //* Databases
        $app->plugins->registerEvent('database_insert', $this->plugin_name, 'db_insert');
        $app->plugins->registerEvent('database_update', $this->plugin_name, 'db_update');
        $app->plugins->registerEvent('database_delete', $this->plugin_name, 'db_delete');
 
        //* Database users
        $app->plugins->registerEvent('database_user_insert', $this->plugin_name, 'db_user_insert');
        $app->plugins->registerEvent('database_user_update', $this->plugin_name, 'db_user_update');
        $app->plugins->registerEvent('database_user_delete', $this->plugin_name, 'db_user_delete');
 
 
    }
 
    function process_host_list($action, $database_name, $database_user, $database_password, $host_list, $link, $database_rename_user = '', $user_access_mode = 'rw') {
        global $app;
        
        if(!$user_access_mode) $user_access_mode = 'rw';
        $action = strtoupper($action);
 
        // set to all hosts if none given
        if(trim($host_list) == '') $host_list = '%';
 
        // process arrays and comma separated strings
        if(!is_array($host_list)) $host_list = explode(',', $host_list);
 
        $success = true;
        if(!preg_match('/\*[A-F0-9]{40}$/', $database_password)) {
                $result = $link->query("SELECT PASSWORD('" . $link->escape_string($database_password) . "') as `crypted`");
                if($result) {
                        $row = $result->fetch_assoc();
                        $database_password = $row['crypted'];
                        $result->free();
                }
        }
        
        $app->log("Calling $action for $database_name with access $user_access_mode and hosts " . implode(', ', $host_list), LOGLEVEL_DEBUG);
        
        // loop through hostlist
        foreach($host_list as $db_host) {
            $db_host = trim($db_host);
 
            $app->log($action . ' for user ' . $database_user . ' at host ' . $db_host, LOGLEVEL_DEBUG);
 
            // check if entry is valid ip address
            $valid = true;
            if($db_host == '%' || $db_host == 'localhost') {
                $valid = true;
            } elseif(preg_match("/^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/", $db_host)) {
                $groups = explode('.', $db_host);
                foreach($groups as $group){
                    if($group<0 or $group>255)
                        $valid=false;
                }
            } else {
                $valid = false;
            }
 
            if($valid == false) {
                $app->log("Invalid host " . $db_host . " for GRANT to " . $database_name, LOGLEVEL_DEBUG);
                continue;
            }
            
            $grants = 'ALL PRIVILEGES';
            if($user_access_mode == 'r') $grants = 'SELECT';
            elseif($user_access_mode == 'rd') $grants = 'SELECT, DELETE, ALTER, DROP';
            
            if($action == 'GRANT') {
                if($user_access_mode == 'r' || $user_access_mode == 'rd') {
                    if(!$link->query("REVOKE ALL PRIVILEGES ON `".$link->escape_string($database_name)."`.* FROM '".$link->escape_string($database_user)."'@'$db_host'")) $success = false;
                    $app->log("REVOKE ALL PRIVILEGES ON `".$link->escape_string($database_name)."`.* FROM '".$link->escape_string($database_user)."'@'$db_host' success? " . ($success ? 'yes' : 'no'), LOGLEVEL_DEBUG);
                    $success = true;
                }
                
                if(!$link->query("GRANT " . $grants . " ON `".$link->escape_string($database_name)."`.* TO '".$link->escape_string($database_user)."'@'$db_host' IDENTIFIED BY PASSWORD '".$link->escape_string($database_password)."'")) $success = false;
                $app->log("GRANT " . $grants . " ON `".$link->escape_string($database_name)."`.* TO '".$link->escape_string($database_user)."'@'$db_host' IDENTIFIED BY PASSWORD '".$link->escape_string($database_password)."' success? " . ($success ? 'yes' : 'no'), LOGLEVEL_DEBUG);
            } elseif($action == 'REVOKE') {
                if(!$link->query("REVOKE ALL PRIVILEGES ON `".$link->escape_string($database_name)."`.* FROM '".$link->escape_string($database_user)."'@'$db_host'")) $success = false;
            } elseif($action == 'DROP') {
                if(!$link->query("DROP USER '".$link->escape_string($database_user)."'@'$db_host'")) $success = false;
            } elseif($action == 'RENAME') {
                if(!$link->query("RENAME USER '".$link->escape_string($database_user)."'@'$db_host' TO '".$link->escape_string($database_rename_user)."'@'$db_host'")) $success = false;
            } elseif($action == 'PASSWORD') {
                if(!$link->query("SET PASSWORD FOR '".$link->escape_string($database_user)."'@'$db_host' = '".$link->escape_string($database_password)."'")) $success = false;
            }
        }
 
        return $success;
    }
 
    function drop_or_revoke_user($database_id, $user_id, $host_list){
        global $app;
 
        // set to all hosts if none given
        if(trim($host_list) == '') $host_list = '%';
 
        $db_user_databases = $app->db->queryAllRecords("SELECT * FROM web_database WHERE (database_user_id = ? OR database_ro_user_id = ?) AND active = 'y' AND database_id != ?", $user_id, $user_id, $database_id);
        $db_user_host_list = array();
        if(is_array($db_user_databases) && !empty($db_user_databases)){
            foreach($db_user_databases as $db_user_database){
                if($db_user_database['remote_access'] == 'y'){
                    if($db_user_database['remote_ips'] == ''){
                        $db_user_host_list[] = '%';
                    } else {
                        $tmp_remote_ips = explode(',', $db_user_database['remote_ips']);
                        if(is_array($tmp_remote_ips) && !empty($tmp_remote_ips)){
                            foreach($tmp_remote_ips as $tmp_remote_ip){
                                $tmp_remote_ip = trim($tmp_remote_ip);
                                if($tmp_remote_ip != '') $db_user_host_list[] = $tmp_remote_ip;
                            }
                        }
                        unset($tmp_remote_ips);
                    }
                }
                $db_user_host_list[] = 'localhost';
            }
        }
        $host_list_arr = explode(',', $host_list);
        //print_r($host_list_arr);
        $drop_hosts = array_diff($host_list_arr, $db_user_host_list);
        //print_r($drop_hosts);
        $revoke_hosts = array_diff($host_list_arr, $drop_hosts);
        //print_r($revoke_hosts);
 
        $drop_host_list = implode(',', $drop_hosts);
        $revoke_host_list = implode(',', $revoke_hosts);
        //echo $drop_host_list."\n";
        //echo $revoke_host_list."\n";
        return array('revoke_hosts' => $revoke_host_list, 'drop_hosts' => $drop_host_list);
    }
 
    function db_insert($event_name, $data) {
        global $app, $conf;
 
        if($data['new']['type'] == 'mysql') {
            if(!include ISPC_LIB_PATH.'/mysql_clientdb.conf') {
                $app->log('Unable to open'.ISPC_LIB_PATH.'/mysql_clientdb.conf', LOGLEVEL_ERROR);
                return;
            }
 
            //* Connect to the database
            $link = new mysqli($clientdb_host, $clientdb_user, $clientdb_password);
            if ($link->connect_error) {
                $app->log('Unable to connect to mysql'.$link->connect_error, LOGLEVEL_ERROR);
                return;
            }
 
            // Charset for the new table
            if($data['new']['database_charset'] != '') {
                $query_charset_table = ' DEFAULT CHARACTER SET '.$data['new']['database_charset'];
            } else {
                $query_charset_table = '';
            }
 
            //* Create the new database
            if ($link->query('CREATE DATABASE `'.$link->escape_string($data['new']['database_name']).'`'.$query_charset_table)) {
                $app->log('Created MySQL database: '.$data['new']['database_name'], LOGLEVEL_DEBUG);
            } else {
                $app->log('Unable to create the database: '.$link->error, LOGLEVEL_WARNING);
            }
 
            // Create the database user if database is active
            if($data['new']['active'] == 'y') {
 
                // get the users for this database
                $db_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['new']['database_user_id']);
                $db_ro_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['new']['database_ro_user_id']);
 
                $host_list = '';
                if($data['new']['remote_access'] == 'y') {
                    $host_list = $data['new']['remote_ips'];
                    if($host_list == '') $host_list = '%';
                }
                if($host_list != '') $host_list .= ',';
                $host_list .= 'localhost';
 
                if($db_user) {
                    if($db_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_user['database_user'], $db_user['database_password'], $host_list, $link, '', ($data['new']['quota_exceeded'] == 'y' ? 'rd' : 'rw'));
                }
                if($db_ro_user && $data['new']['database_user_id'] != $data['new']['database_ro_user_id']) {
                    if($db_ro_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_ro_user['database_user'], $db_ro_user['database_password'], $host_list, $link, '', 'r');
                }
 
            }
 
            $link->close();
        }
    }
 
    function db_update($event_name, $data) {
        global $app, $conf;
 
        // skip processing if database was and is inactive
        if($data['new']['active'] == 'n' && $data['old']['active'] == 'n') return;
 
        if($data['new']['type'] == 'mysql') {
            if(!include ISPC_LIB_PATH.'/mysql_clientdb.conf') {
                $app->log('Unable to open'.ISPC_LIB_PATH.'/mysql_clientdb.conf', LOGLEVEL_ERROR);
                return;
            }
 
            //* Connect to the database
            $link = new mysqli($clientdb_host, $clientdb_user, $clientdb_password);
            if ($link->connect_error) {
                $app->log('Unable to connect to the database: '.$link->connect_error, LOGLEVEL_ERROR);
                return;
            }
            
            // get the users for this database
            $db_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['new']['database_user_id']);
            $old_db_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['old']['database_user_id']);
 
            $db_ro_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['new']['database_ro_user_id']);
            $old_db_ro_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['old']['database_ro_user_id']);
 
            $host_list = '';
            if($data['new']['remote_access'] == 'y') {
                $host_list = $data['new']['remote_ips'];
                if($host_list == '') $host_list = '%';
            }
            if($host_list != '') $host_list .= ',';
            $host_list .= 'localhost';
 
            // REVOKES and DROPS have to be done on old host list, not new host list
            $old_host_list = '';
            if($data['old']['remote_access'] == 'y') {
                $old_host_list = $data['old']['remote_ips'];
                if($old_host_list == '') $old_host_list = '%';
            }
            if($old_host_list != '') $old_host_list .= ',';
            $old_host_list .= 'localhost';
 
            //* rename database
            if ( $data['new']['database_name'] !=  $data['old']['database_name'] ) {
                $old_name = $link->escape_string($data['old']['database_name']);
                $new_name = $link->escape_string($data['new']['database_name']);
                $timestamp = time();
 
                $tables = $link->query("SELECT TABLE_NAME FROM information_schema.tables WHERE table_schema='".$old_name."' AND TABLE_TYPE='BASE TABLE'");
                if ($tables->num_rows > 0) {
                    while ($row = $tables->fetch_assoc()) {
                        $tables_array[] = $row['TABLE_NAME'];
                    }
 
                    //* save triggers, routines and events
                    $triggers = $link->query("SHOW TRIGGERS FROM ".$old_name);
                    if ($triggers->num_rows > 0) {
                        while ($row = $triggers->fetch_assoc()) {
                            $triggers_array[] = $row;
                        }
                        $app->log('Dumping triggers from '.$old_name, LOGLEVEL_DEBUG);
                        $command = "mysqldump -h ".escapeshellarg($clientdb_host)." -u ".escapeshellarg($clientdb_user)." -p".escapeshellarg($clientdb_password)." ".$old_name." -d -t -R -E > ".$timestamp.$old_name.'.triggers';
                        exec($command, $out, $ret);
                        $app->system->chmod($timestamp.$old_name.'.triggers', 0600);
                        if ($ret != 0) {
                            unset($triggers_array);
                            $app->system->unlink($timestamp.$old_name.'.triggers');
                            $app->log('Unable to dump triggers from '.$old_name, LOGLEVEL_ERROR);
                        }
                        unset($out);
                    }
 
                    //* save views
                    $views = $link->query("SELECT TABLE_NAME FROM information_schema.tables WHERE table_schema='".$old_name."' and TABLE_TYPE='VIEW'");
                    if ($views->num_rows > 0) {
                        while ($row = $views->fetch_assoc()) {
                            $views_array[] = $row;
                        }
                        foreach ($views_array as $_views) {
                            $temp[] = $_views['TABLE_NAME'];
                        }
                        $app->log('Dumping views from '.$old_name, LOGLEVEL_DEBUG);
                        $temp_views = implode(' ', $temp);
                        $command = "mysqldump -h ".escapeshellarg($clientdb_host)." -u ".escapeshellarg($clientdb_user)." -p".escapeshellarg($clientdb_password)." ".$old_name." ".$temp_views." > ".$timestamp.$old_name.'.views';
                        exec($command, $out, $ret);
                        $app->system->chmod($timestamp.$old_name.'.views', 0600);
                        if ($ret != 0) {
                            unset($views_array);
                            $app->system->unlink($timestamp.$old_name.'.views');
                            $app->log('Unable to dump views from '.$old_name, LOGLEVEL_ERROR);
                        }
                        unset($out);
                        unset($temp);
                        unset($temp_views);
                    }
 
                    //* create new database
                    $this->db_insert($event_name, $data);
 
                    $link->query("show databases like '".$new_name."'");
                    if ($link) {
                        //* rename tables
                        foreach ($tables_array as $table) {
                            $table = $link->escape_string($table);
                            $sql = "RENAME TABLE ".$old_name.".".$table." TO ".$new_name.".".$table;
                            $link->query($sql);
                            $app->log($sql, LOGLEVEL_DEBUG);
                            if(!$link) {
                                $app->log($sql." failed", LOGLEVEL_ERROR);
                            }
                        }
 
                        //* drop old triggers
                        if (@is_array($triggers_array)) {
                            foreach($triggers_array as $trigger) {
                                $_trigger = $link->escape_string($trigger['Trigger']);
                                $sql = "DROP TRIGGER ".$old_name.".".$_trigger;
                                $link->query($sql);
                                $app->log($sql, LOGLEVEL_DEBUG);
                                unset($_trigger);
                            }
                            //* update triggers, routines and events
                            $command = "mysql -h ".escapeshellarg($clientdb_host)." -u ".escapeshellarg($clientdb_user)." -p".escapeshellarg($clientdb_password)." ".$new_name." < ".$timestamp.$old_name.'.triggers';
                            exec($command, $out, $ret);
                            if ($ret != 0) {
                                $app->log('Unable to import triggers for '.$new_name, LOGLEVEL_ERROR);
                            } else {
                                $app->system->unlink($timestamp.$old_name.'.triggers');
                            }
                        }
 
                        //* loading views
                        if (@is_array($views_array)) {
                            $command = "mysql -h ".escapeshellarg($clientdb_host)." -u ".escapeshellarg($clientdb_user)." -p".escapeshellarg($clientdb_password)." ".$new_name." < ".$timestamp.$old_name.'.views';
                            exec($command, $out, $ret);
                            if ($ret != 0) {
                                $app->log('Unable to import views for '.$new_name, LOGLEVEL_ERROR);
                            } else {
                                $app->system->unlink($timestamp.$old_name.'.views');
                            }
                        }
 
                        //* drop old database
                        $this->db_delete($event_name, $data);
                    } else {
                        $app->log('Connection to new databse '.$new_name.' failed', LOGLEVEL_ERROR);
                        if (@is_array($triggers_array)) {
                            $app->system->unlink($timestamp.$old_name.'.triggers');
                        }
                        if (@is_array($views_array)) {
                            $app->system->unlink($timestamp.$old_name.'.views');
                        }
                    }
 
                } else { //* SELECT TABLE_NAME error
                    $app->log('Unable to rename database '.$old_name.' to '.$new_name, LOGLEVEL_ERROR);
                }
            }
 
            // Create the database user if database was disabled before
            if($data['new']['active'] == 'y') {
                if($db_user) {
                    if($db_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_user['database_user'], $db_user['database_password'], $host_list, $link, '', ($data['new']['quota_exceeded'] == 'y' ? 'rd' : 'rw'));
                }
                if($db_ro_user && $data['new']['database_user_id'] != $data['new']['database_ro_user_id']) {
                    if($db_ro_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_ro_user['database_user'], $db_ro_user['database_password'], $host_list, $link, '', 'r');
                }
            } elseif($data['new']['active'] == 'n' && $data['old']['active'] == 'y') { // revoke database user, if inactive
                if($old_db_user) {
                    if($old_db_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        // Find out users to drop and users to revoke
                        $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $old_host_list);
                        if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                        if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                    }
 
                }
                if($old_db_ro_user && $data['old']['database_user_id'] != $data['old']['database_ro_user_id']) {
                    if($old_db_ro_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        // Find out users to drop and users to revoke
                        $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_ro_user_id'], $old_host_list);
                        if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                        if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                    }
                }
                // Database is not active, so stop processing here
                $link->close();
                return;
            }
 
            //* selected Users have changed
            if($data['new']['database_user_id'] != $data['old']['database_user_id']) {
                if($data['old']['database_user_id'] && $data['old']['database_user_id'] != $data['new']['database_ro_user_id']) {
                    if($old_db_user) {
                        if($old_db_user['database_user'] == 'root'){
                            $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        } else {
                            // Find out users to drop and users to revoke
                            $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $old_host_list);
                            if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                            if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                        }
                    }
                }
                if($db_user) {
                    if($db_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_user['database_user'], $db_user['database_password'], $host_list, $link, '', ($data['new']['quota_exceeded'] == 'y' ? 'rd' : 'rw'));
                }
            }
            if($data['new']['database_ro_user_id'] != $data['old']['database_ro_user_id']) {
                if($data['old']['database_ro_user_id'] && $data['old']['database_ro_user_id'] != $data['new']['database_user_id']) {
                    if($old_db_ro_user) {
                        if($old_db_ro_user['database_user'] == 'root'){
                            $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        } else {
                            // Find out users to drop and users to revoke
                            $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $old_host_list);
                            if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                            if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                        }
                    }
                }
                if($db_ro_user && $data['new']['database_user_id'] != $data['new']['database_ro_user_id']) {
                    if($db_ro_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    else $this->process_host_list('GRANT', $data['new']['database_name'], $db_ro_user['database_user'], $db_ro_user['database_password'], $host_list, $link, '', 'r');
                }
            }
 
            //* Remote access option has changed.
            if($data['new']['remote_access'] != $data['old']['remote_access']) {
 
                //* set new priveliges
                if($data['new']['remote_access'] == 'y') {
                    if($db_user) {
                        if($db_user['database_user'] == 'root'){
                            $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        } else {
                            $this->process_host_list('GRANT', $data['new']['database_name'], $db_user['database_user'], $db_user['database_password'], $data['new']['remote_ips'], $link, '', ($data['new']['quota_exceeded'] == 'y' ? 'rd' : 'rw'));
                        }
                    }
                    if($db_ro_user && $data['new']['database_user_id'] != $data['new']['database_ro_user_id']) {
                        if($db_ro_user['database_user'] == 'root') $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        else $this->process_host_list('GRANT', $data['new']['database_name'], $db_ro_user['database_user'], $db_ro_user['database_password'], $data['new']['remote_ips'], $link, '', 'r');
                    }
                } else {
                    if($old_db_user) {
                        if($old_db_user['database_user'] == 'root'){
                            $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        } else {
                            // Find out users to drop and users to revoke
                            $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $data['old']['remote_ips']);
                            if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                            if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                        }
                    }
                    if($old_db_ro_user && $data['old']['database_user_id'] != $data['old']['database_ro_user_id']) {
                        if($old_db_ro_user['database_user'] == 'root'){
                            $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                        } else {
                            // Find out users to drop and users to revoke
                            $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_ro_user_id'], $data['old']['remote_ips']);
                            if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                            if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                        }
                    }
                }
                $app->log('Changing MySQL remote access privileges for database: '.$data['new']['database_name'], LOGLEVEL_DEBUG);
            } elseif($data['new']['remote_access'] == 'y' && $data['new']['remote_ips'] != $data['old']['remote_ips']) {
                //* Change remote access list
                if($old_db_user) {
                    if($old_db_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        // Find out users to drop and users to revoke
                        $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $data['old']['remote_ips']);
                        if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                        if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                    }
                }
                if($db_user) {
                    if($db_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        $this->process_host_list('GRANT', $data['new']['database_name'], $db_user['database_user'], $db_user['database_password'], $data['new']['remote_ips'], $link, '', ($data['new']['quota_exceeded'] == 'y' ? 'rd' : 'rw'));
                    }
                }
 
                if($old_db_ro_user && $data['old']['database_user_id'] != $data['old']['database_ro_user_id']) {
                    if($old_db_ro_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        // Find out users to drop and users to revoke
                        $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $data['old']['remote_ips']);
                        if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                        if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_ro_user['database_user'], $old_db_ro_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
                    }
                }
 
                if($db_ro_user && $data['new']['database_user_id'] != $data['new']['database_ro_user_id']) {
                    if($db_ro_user['database_user'] == 'root'){
                        $app->log('User root not allowed for Client databases', LOGLEVEL_WARNING);
                    } else {
                        $this->process_host_list('GRANT', $data['new']['database_name'], $db_ro_user['database_user'], $db_ro_user['database_password'], $data['new']['remote_ips'], $link, '', 'r');
                    }
                }
            }
 
            $link->close();
        }
 
    }
 
    function db_delete($event_name, $data) {
        global $app, $conf;
 
        if($data['old']['type'] == 'mysql') {
            if(!include ISPC_LIB_PATH.'/mysql_clientdb.conf') {
                $app->log('Unable to open'.ISPC_LIB_PATH.'/mysql_clientdb.conf', LOGLEVEL_ERROR);
                return;
            }
 
            //* Connect to the database
            $link = new mysqli($clientdb_host, $clientdb_user, $clientdb_password);
            if ($link->connect_error) {
                $app->log('Unable to connect to mysql: '.$link->connect_error, LOGLEVEL_ERROR);
                return;
            }
 
            $old_host_list = '';
            if($data['old']['remote_access'] == 'y') {
                $old_host_list = $data['old']['remote_ips'];
                if($old_host_list == '') $old_host_list = '%';
            }
            if($old_host_list != '') $old_host_list .= ',';
            $old_host_list .= 'localhost';
 
            if($data['old']['database_user_id']) {
                $old_db_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['old']['database_user_id']);
                $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_user_id'], $old_host_list);
                if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
            }
            if($data['old']['database_ro_user_id']) {
                $old_db_user = $app->db->queryOneRecord("SELECT `database_user`, `database_password` FROM `web_database_user` WHERE `database_user_id` = ?", $data['old']['database_ro_user_id']);
                $drop_or_revoke_user = $this->drop_or_revoke_user($data['old']['database_id'], $data['old']['database_ro_user_id'], $old_host_list);
                if($drop_or_revoke_user['drop_hosts'] != '') $this->process_host_list('DROP', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['drop_hosts'], $link);
                if($drop_or_revoke_user['revoke_hosts'] != '') $this->process_host_list('REVOKE', $data['old']['database_name'], $old_db_user['database_user'], $old_db_user['database_password'], $drop_or_revoke_user['revoke_hosts'], $link);
            }
 
 
            if($link->query('DROP DATABASE `'.$link->escape_string($data['old']['database_name'].'`'))) {
                $app->log('Dropping MySQL database: '.$data['old']['database_name'], LOGLEVEL_DEBUG);
            } else {
                $app->log('Error while dropping MySQL database: '.$data['old']['database_name'].' '.$link->error, LOGLEVEL_WARNING);
            }
 
            $link->close();
        }
 
 
    }
 
 
    function db_user_insert($event_name, $data) {
        global $app, $conf;
        // we have nothing to do here, stale user accounts are useless ;)
    }
 
    function db_user_update($event_name, $data) {
        global $app, $conf;
 
        if(!include ISPC_LIB_PATH.'/mysql_clientdb.conf') {
            $app->log('Unable to open'.ISPC_LIB_PATH.'/mysql_clientdb.conf', LOGLEVEL_ERROR);
            return;
        }
 
        //* Connect to the database
        $link = new mysqli($clientdb_host, $clientdb_user, $clientdb_password);
        if ($link->connect_error) {
            $app->log('Unable to connect to mysql'.$link->connect_error, LOGLEVEL_ERROR);
            return;
        }
 
 
        if($data['old']['database_user'] == $data['new']['database_user'] && ($data['old']['database_password'] == $data['new']['database_password'] || $data['new']['database_password'] == '')) {
            return;
        }
 
 
        $host_list = array('localhost');
        // get all databases this user was active for
        $user_id = intval($data['old']['database_user_id']);
        $db_list = $app->db->queryAllRecords("SELECT `remote_access`, `remote_ips` FROM `web_database` WHERE `database_user_id` = ? OR database_ro_user_id = ?", $user_id, $user_id);;
        if(count($db_list) < 1) return; // nothing to do on this server for this db user
 
        foreach($db_list as $database) {
            if($database['remote_access'] != 'y') continue;
 
            if($database['remote_ips'] != '') $ips = explode(',', $database['remote_ips']);
            else $ips = array('%');
 
            foreach($ips as $ip) {
                $ip = trim($ip);
                if(!in_array($ip, $host_list)) $host_list[] = $ip;
            }
        }
 
        foreach($host_list as $db_host) {
            if($data['new']['database_user'] != $data['old']['database_user']) {
                $link->query("RENAME USER '".$link->escape_string($data['old']['database_user'])."'@'$db_host' TO '".$link->escape_string($data['new']['database_user'])."'@'$db_host'");
                $app->log('Renaming MySQL user: '.$data['old']['database_user'].' to '.$data['new']['database_user'], LOGLEVEL_DEBUG);
            }
 
            if($data['new']['database_password'] != $data['old']['database_password'] && $data['new']['database_password'] != '') {
                $link->query("SET PASSWORD FOR '".$link->escape_string($data['new']['database_user'])."'@'$db_host' = '".$link->escape_string($data['new']['database_password'])."';");
                $app->log('Changing MySQL user password for: '.$data['new']['database_user'].'@'.$db_host, LOGLEVEL_DEBUG);
            }
        }
 
        $link->close();
 
    }
 
    function db_user_delete($event_name, $data) {
        global $app, $conf;
 
        if(!include ISPC_LIB_PATH.'/mysql_clientdb.conf') {
            $app->log('Unable to open'.ISPC_LIB_PATH.'/mysql_clientdb.conf', LOGLEVEL_ERROR);
            return;
        }
 
        //* Connect to the database
        $link = new mysqli($clientdb_host, $clientdb_user, $clientdb_password);
        if ($link->connect_error) {
            $app->log('Unable to connect to mysql'.$link->connect_error, LOGLEVEL_ERROR);
            return;
        }
 
        $host_list = array();
        // read all mysql users with this username
        $result = $link->query("SELECT `User`, `Host` FROM `mysql`.`user` WHERE `User` = '" . $link->escape_string($data['old']['database_user']) . "' AND `Create_user_priv` = 'N'"); // basic protection against accidently deleting system users like debian-sys-maint
        if($result) {
            while($row = $result->fetch_assoc()) {
                $host_list[] = $row['Host'];
            }
            $result->free();
        }
 
        foreach($host_list as $db_host) {
            if($link->query("DROP USER '".$link->escape_string($data['old']['database_user'])."'@'$db_host';")) {
                $app->log('Dropping MySQL user: '.$data['old']['database_user'], LOGLEVEL_DEBUG);
            }
        }
 
        $link->close();
    }
 
} // end class
 
?>