summaryrefslogtreecommitdiffstats
path: root/editgroups.cgi
blob: 7bc712b685d7cd0a0035a1d1ce8c5678bbe185af (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
#!/usr/bin/perl -wT
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Dave Miller <justdave@syndicomm.com>
#                 Joel Peshkin <bugreport@peshkin.net>
#                 Jacob Steenhagen <jake@bugzilla.org>
#                 Vlad Dascalu <jocuri@softhome.net>
#                 Frédéric Buclin <LpSolit@gmail.com>

use strict;
use lib ".";

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Config qw(:DEFAULT :admin);
use Bugzilla::Util;
use Bugzilla::Error;
use Bugzilla::Group;
use Bugzilla::Product;
use Bugzilla::User;

my $cgi = Bugzilla->cgi;
my $dbh = Bugzilla->dbh;
my $template = Bugzilla->template;
my $vars = {};

my $user = Bugzilla->login(LOGIN_REQUIRED);

print $cgi->header();

$user->in_group('creategroups')
  || ThrowUserError("auth_failure", {group  => "creategroups",
                                     action => "edit",
                                     object => "groups"});

my $action = trim($cgi->param('action') || '');

# RederiveRegexp: update user_group_map with regexp-based grants
sub RederiveRegexp
{
    my $regexp = shift;
    my $gid = shift;
    my $dbh = Bugzilla->dbh;
    my $sth = $dbh->prepare("SELECT userid, login_name, group_id
                               FROM profiles
                          LEFT JOIN user_group_map
                                 ON user_group_map.user_id = profiles.userid
                                AND group_id = ?
                                AND grant_type = ?
                                AND isbless = 0");
    my $sthadd = $dbh->prepare("INSERT INTO user_group_map
                                 (user_id, group_id, grant_type, isbless)
                                 VALUES (?, ?, ?, 0)");
    my $sthdel = $dbh->prepare("DELETE FROM user_group_map
                                 WHERE user_id = ? AND group_id = ?
                                 AND grant_type = ? and isbless = 0");
    $sth->execute($gid, GRANT_REGEXP);
    while (my ($uid, $login, $present) = $sth->fetchrow_array()) {
        if (($regexp =~ /\S+/) && ($login =~ m/$regexp/i))
        {
            $sthadd->execute($uid, $gid, GRANT_REGEXP) unless $present;
        } else {
            $sthdel->execute($uid, $gid, GRANT_REGEXP) if $present;
        }
    }
}

# Add missing entries in bug_group_map for bugs created while
# a mandatory group was disabled and which is now enabled again.
sub fix_bug_permissions {
    my $gid = shift;
    my $dbh = Bugzilla->dbh;

    detaint_natural($gid);
    return unless $gid;

    my $bug_ids =
      $dbh->selectcol_arrayref('SELECT bugs.bug_id
                                  FROM bugs
                            INNER JOIN group_control_map
                                    ON group_control_map.product_id = bugs.product_id
                             LEFT JOIN bug_group_map
                                    ON bug_group_map.bug_id = bugs.bug_id
                                   AND bug_group_map.group_id = group_control_map.group_id
                                 WHERE group_control_map.group_id = ?
                                   AND group_control_map.membercontrol = ?
                                   AND bug_group_map.group_id IS NULL',
                                 undef, ($gid, CONTROLMAPMANDATORY));

    my $sth = $dbh->prepare('INSERT INTO bug_group_map (bug_id, group_id) VALUES (?, ?)');
    foreach my $bug_id (@$bug_ids) {
        $sth->execute($bug_id, $gid);
    }
}

# CheckGroupID checks that a positive integer is given and is
# actually a valid group ID. If all tests are successful, the
# trimmed group ID is returned.

sub CheckGroupID {
    my ($group_id) = @_;
    $group_id = trim($group_id || 0);
    ThrowUserError("group_not_specified") unless $group_id;
    (detaint_natural($group_id)
      && Bugzilla->dbh->selectrow_array("SELECT id FROM groups WHERE id = ?",
                                        undef, $group_id))
      || ThrowUserError("invalid_group_ID");
    return $group_id;
}

# This subroutine is called when:
# - a new group is created. CheckGroupName checks that its name
#   is not empty and is not already used by any existing group.
# - an existing group is edited. CheckGroupName checks that its
#   name has not been deleted or renamed to another existing
#   group name (whose group ID is different from $group_id).
# In both cases, an error message is returned to the user if any
# test fails! Else, the trimmed group name is returned.

sub CheckGroupName {
    my ($name, $group_id) = @_;
    $name = trim($name || '');
    trick_taint($name);
    ThrowUserError("empty_group_name") unless $name;
    my $excludeself = (defined $group_id) ? " AND id != $group_id" : "";
    my $name_exists = Bugzilla->dbh->selectrow_array("SELECT name FROM groups " .
                                                     "WHERE name = ? $excludeself",
                                                     undef, $name);
    if ($name_exists) {
        ThrowUserError("group_exists", { name => $name });
    }
    return $name;
}

# CheckGroupDesc checks that a non empty description is given. The
# trimmed description is returned.

sub CheckGroupDesc {
    my ($desc) = @_;
    $desc = trim($desc || '');
    trick_taint($desc);
    ThrowUserError("empty_group_description") unless $desc;
    return $desc;
}

# CheckGroupRegexp checks that the regular expression is valid
# (the regular expression being optional, the test is successful
# if none is given, as expected). The trimmed regular expression
# is returned.

sub CheckGroupRegexp {
    my ($regexp) = @_;
    $regexp = trim($regexp || '');
    trick_taint($regexp);
    ThrowUserError("invalid_regexp") unless (eval {qr/$regexp/});
    return $regexp;
}

# If no action is specified, get a list of all groups available.

unless ($action) {
    my @groups = Bugzilla::Group::get_all_groups();
    $vars->{'groups'} = \@groups;
    
    print $cgi->header();
    $template->process("admin/groups/list.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    exit;
}

#
# action='changeform' -> present form for altering an existing group
#
# (next action will be 'postchanges')
#

if ($action eq 'changeform') {
    # Check that an existing group ID is given
    my $group_id = CheckGroupID($cgi->param('group'));
    my ($name, $description, $regexp, $isactive, $isbuggroup) =
        $dbh->selectrow_array("SELECT name, description, userregexp, " .
                              "isactive, isbuggroup " .
                              "FROM groups WHERE id = ?", undef, $group_id);

    # For each group, we use left joins to establish the existence of
    # a record making that group a member of this group
    # and the existence of a record permitting that group to bless
    # this one

    my @groups;
    my $group_list =
      $dbh->selectall_arrayref('SELECT groups.id, groups.name, groups.description,
                                       CASE WHEN group_group_map.member_id IS NOT NULL
                                            THEN 1 ELSE 0 END,
                                       CASE WHEN B.member_id IS NOT NULL
                                            THEN 1 ELSE 0 END,
                                       CASE WHEN C.member_id IS NOT NULL
                                            THEN 1 ELSE 0 END
                                  FROM groups
                                  LEFT JOIN group_group_map
                                    ON group_group_map.member_id = groups.id
                                   AND group_group_map.grantor_id = ?
                                   AND group_group_map.grant_type = ?
                                  LEFT JOIN group_group_map as B
                                    ON B.member_id = groups.id
                                   AND B.grantor_id = ?
                                   AND B.grant_type = ?
                                  LEFT JOIN group_group_map as C
                                    ON C.member_id = groups.id
                                   AND C.grantor_id = ?
                                   AND C.grant_type = ?
                                 ORDER by name',
                                undef, ($group_id, GROUP_MEMBERSHIP,
                                        $group_id, GROUP_BLESS,
                                        $group_id, GROUP_VISIBLE));

    foreach (@$group_list) {
        my ($grpid, $grpnam, $grpdesc, $grpmember, $blessmember, $membercansee) = @$_;
        my $group = {};
        $group->{'grpid'}       = $grpid;
        $group->{'grpnam'}      = $grpnam;
        $group->{'grpdesc'}     = $grpdesc;
        $group->{'grpmember'}   = $grpmember;
        $group->{'blessmember'} = $blessmember;
        $group->{'membercansee'}= $membercansee;
        push(@groups, $group);
    }

    $vars->{'group_id'}    = $group_id;
    $vars->{'name'}        = $name;
    $vars->{'description'} = $description;
    $vars->{'regexp'}      = $regexp;
    $vars->{'isactive'}    = $isactive;
    $vars->{'isbuggroup'}  = $isbuggroup;
    $vars->{'groups'}      = \@groups;

    print $cgi->header();
    $template->process("admin/groups/edit.html.tmpl", $vars)
      || ThrowTemplateError($template->error());

    exit;
}

#
# action='add' -> present form for parameters for new group
#
# (next action will be 'new')
#

if ($action eq 'add') {
    print $cgi->header();
    $template->process("admin/groups/create.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    
    exit;
}



#
# action='new' -> add group entered in the 'action=add' screen
#

if ($action eq 'new') {
    # Check that a not already used group name is given, that
    # a description is also given and check if the regular
    # expression is valid (if any).
    my $name = CheckGroupName($cgi->param('name'));
    my $desc = CheckGroupDesc($cgi->param('desc'));
    my $regexp = CheckGroupRegexp($cgi->param('regexp'));
    my $isactive = $cgi->param('isactive') ? 1 : 0;

    # Add the new group
    $dbh->do('INSERT INTO groups
              (name, description, isbuggroup,
               userregexp, isactive, last_changed)
              VALUES (?, ?, 1, ?, ?, NOW())',
              undef, ($name, $desc, $regexp, $isactive));

    my $gid = $dbh->bz_last_key('groups', 'id');
    my $admin = Bugzilla::Group->new({name => 'admin'})->id();
    # Since we created a new group, give the "admin" group all privileges
    # initially.
    my $sth = $dbh->prepare('INSERT INTO group_group_map
                             (member_id, grantor_id, grant_type)
                             VALUES (?, ?, ?)');

    $sth->execute($admin, $gid, GROUP_MEMBERSHIP);
    $sth->execute($admin, $gid, GROUP_BLESS);
    $sth->execute($admin, $gid, GROUP_VISIBLE);

    # Permit all existing products to use the new group if makeproductgroups.
    if ($cgi->param('insertnew')) {
        $dbh->do('INSERT INTO group_control_map
                  (group_id, product_id, entry, membercontrol,
                   othercontrol, canedit)
                  SELECT ?, products.id, 0, ?, ?, 0 FROM products',
                  undef, ($gid, CONTROLMAPSHOWN, CONTROLMAPNA));
    }
    RederiveRegexp($regexp, $gid);

    print $cgi->header();
    $template->process("admin/groups/created.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    exit;
}

#
# action='del' -> ask if user really wants to delete
#
# (next action would be 'delete')
#

if ($action eq 'del') {
    # Check that an existing group ID is given
    my $gid = CheckGroupID($cgi->param('group'));
    my ($name, $desc, $isbuggroup) =
        $dbh->selectrow_array("SELECT name, description, isbuggroup " .
                              "FROM groups WHERE id = ?", undef, $gid);

    # System groups cannot be deleted!
    if (!$isbuggroup) {
        ThrowUserError("system_group_not_deletable", { name => $name });
    }
    # Groups having a special role cannot be deleted.
    my @special_groups;
    foreach my $special_group ('chartgroup', 'insidergroup', 'timetrackinggroup') {
        if ($name eq Param($special_group)) {
            push(@special_groups, $special_group);
        }
    }
    if (scalar(@special_groups)) {
        ThrowUserError('group_has_special_role', {'name'  => $name,
                                                  'groups' => \@special_groups});
    }

    # Group inheritance no longer appears in user_group_map.
    my $grouplist = join(',', @{Bugzilla::User->flatten_group_membership($gid)});
    my $hasusers =
        $dbh->selectrow_array("SELECT 1 FROM user_group_map
                               WHERE group_id IN ($grouplist) AND isbless = 0 " .
                               $dbh->sql_limit(1)) || 0;

    my $bug_ids = $dbh->selectcol_arrayref('SELECT bug_id FROM bug_group_map
                                            WHERE group_id = ?', undef, $gid);

    my $hasbugs = scalar(@$bug_ids) ? 1 : 0;
    my $buglist = join(',', @$bug_ids);

    my $hasproduct = Bugzilla::Product->new({'name' => $name}) ? 1 : 0;

    my $hasflags = $dbh->selectrow_array('SELECT 1 FROM flagtypes 
                                           WHERE grant_group_id = ?
                                              OR request_group_id = ? ' .
                                          $dbh->sql_limit(1),
                                          undef, ($gid, $gid)) || 0;

    $vars->{'gid'}         = $gid;
    $vars->{'name'}        = $name;
    $vars->{'description'} = $desc;
    $vars->{'hasusers'}    = $hasusers;
    $vars->{'hasbugs'}     = $hasbugs;
    $vars->{'hasproduct'}  = $hasproduct;
    $vars->{'hasflags'}    = $hasflags;
    $vars->{'buglist'}     = $buglist;

    print $cgi->header();
    $template->process("admin/groups/delete.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    
    exit;
}

#
# action='delete' -> really delete the group
#

if ($action eq 'delete') {
    # Check that an existing group ID is given
    my $gid = CheckGroupID($cgi->param('group'));
    my ($name, $isbuggroup) =
        $dbh->selectrow_array("SELECT name, isbuggroup FROM groups " .
                              "WHERE id = ?", undef, $gid);

    # System groups cannot be deleted!
    if (!$isbuggroup) {
        ThrowUserError("system_group_not_deletable", { name => $name });
    }
    # Groups having a special role cannot be deleted.
    my @special_groups;
    foreach my $special_group ('chartgroup', 'insidergroup', 'timetrackinggroup') {
        if ($name eq Param($special_group)) {
            push(@special_groups, $special_group);
        }
    }
    if (scalar(@special_groups)) {
        ThrowUserError('group_has_special_role', {'name'  => $name,
                                                  'groups' => \@special_groups});
    }

    my $cantdelete = 0;

    # Group inheritance no longer appears in user_group_map.
    my $grouplist = join(',', @{Bugzilla::User->flatten_group_membership($gid)});
    my $hasusers =
        $dbh->selectrow_array("SELECT 1 FROM user_group_map
                               WHERE group_id IN ($grouplist) AND isbless = 0 " .
                               $dbh->sql_limit(1)) || 0;

    if ($hasusers && !defined $cgi->param('removeusers')) {
        $cantdelete = 1;
    }

    my $hasbugs = $dbh->selectrow_array('SELECT 1 FROM bug_group_map
                                         WHERE group_id = ? ' .
                                         $dbh->sql_limit(1),
                                         undef, $gid) || 0;
    if ($hasbugs && !defined $cgi->param('removebugs')) {
        $cantdelete = 1;
    }

    if (Bugzilla::Product->new({'name' => $name})
        && !defined $cgi->param('unbind'))
    {
        $cantdelete = 1;
    }

    my $hasflags = $dbh->selectrow_array('SELECT 1 FROM flagtypes 
                                           WHERE grant_group_id = ?
                                              OR request_group_id = ? ' .
                                          $dbh->sql_limit(1),
                                          undef, ($gid, $gid)) || 0;
    if ($hasflags && !defined $cgi->param('removeflags')) {
        $cantdelete = 1;
    }

    $vars->{'gid'}        = $gid;
    $vars->{'name'}       = $name;

    ThrowUserError('group_cannot_delete', $vars) if $cantdelete;

    $dbh->do('UPDATE flagtypes SET grant_group_id = ?
               WHERE grant_group_id = ?',
              undef, (undef, $gid));
    $dbh->do('UPDATE flagtypes SET request_group_id = ?
               WHERE request_group_id = ?',
              undef, (undef, $gid));
    $dbh->do('DELETE FROM user_group_map WHERE group_id = ?',
              undef, $gid);
    $dbh->do('DELETE FROM group_group_map 
               WHERE grantor_id = ? OR member_id = ?',
              undef, ($gid, $gid));
    $dbh->do('DELETE FROM bug_group_map WHERE group_id = ?',
              undef, $gid);
    $dbh->do('DELETE FROM group_control_map WHERE group_id = ?',
              undef, $gid);
    $dbh->do('DELETE FROM whine_schedules
               WHERE mailto_type = ? AND mailto = ?',
              undef, (MAILTO_GROUP, $gid));
    $dbh->do('DELETE FROM groups WHERE id = ?',
              undef, $gid);

    print $cgi->header();
    $template->process("admin/groups/deleted.html.tmpl", $vars)
      || ThrowTemplateError($template->error());

    exit;
}

#
# action='postchanges' -> update the groups
#

if ($action eq 'postchanges') {
    # ZLL: Bug 181589: we need to have something to remove explicitly listed users from
    # groups in order for the conversion to 2.18 groups to work
    my $action;

    if ($cgi->param('remove_explicit_members')) {
        $action = 1;
    } elsif ($cgi->param('remove_explicit_members_regexp')) {
        $action = 2;
    } else {
        $action = 3;
    }
    
    my ($gid, $chgs, $name, $regexp) = doGroupChanges();
    
    $vars->{'action'}  = $action;
    $vars->{'changes'} = $chgs;
    $vars->{'gid'}     = $gid;
    $vars->{'name'}    = $name;
    if ($action == 2) {
        $vars->{'regexp'} = $regexp;
    }
    
    print $cgi->header();
    $template->process("admin/groups/change.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    exit;
}

if (($action eq 'remove_all_regexp') || ($action eq 'remove_all')) {
    # remove all explicit users from the group with
    # gid = $cgi->param('group') that match the regular expression
    # stored in the DB for that group or all of them period

    my $gid = CheckGroupID($cgi->param('group'));

    my ($name, $regexp) =
      $dbh->selectrow_array('SELECT name, userregexp FROM groups
                             WHERE id = ?', undef, $gid);

    $dbh->bz_lock_tables('groups WRITE', 'profiles READ',
                         'user_group_map WRITE');

    my $sth = $dbh->prepare("SELECT user_group_map.user_id, profiles.login_name
                               FROM user_group_map
                         INNER JOIN profiles
                                 ON user_group_map.user_id = profiles.userid
                              WHERE user_group_map.group_id = ?
                                AND grant_type = ?
                                AND isbless = 0");
    $sth->execute($gid, GRANT_DIRECT);

    my @users;
    my $sth2 = $dbh->prepare("DELETE FROM user_group_map
                              WHERE user_id = ?
                              AND isbless = 0
                              AND group_id = ?");

    while ( my ($userid, $userlogin) = $sth->fetchrow_array() ) {
        if ((($regexp =~ /\S/) && ($userlogin =~ m/$regexp/i))
            || ($action eq 'remove_all'))
        {
            $sth2->execute($userid, $gid);

            my $user = {};
            $user->{'login'} = $userlogin;
            push(@users, $user);
        }
    }

    $dbh->do('UPDATE groups SET last_changed = NOW()
              WHERE id = ?', undef, $gid);
    $dbh->bz_unlock_tables();

    $vars->{'users'}      = \@users;
    $vars->{'name'}       = $name;
    $vars->{'regexp'}     = $regexp;
    $vars->{'remove_all'} = ($action eq 'remove_all');
    $vars->{'gid'}        = $gid;
    
    print $cgi->header();
    $template->process("admin/groups/remove.html.tmpl", $vars)
      || ThrowTemplateError($template->error());

    exit;
}


#
# No valid action found
#

ThrowCodeError("action_unrecognized", $vars);


# Helper sub to handle the making of changes to a group
sub doGroupChanges {
    my $cgi = Bugzilla->cgi;
    my $dbh = Bugzilla->dbh;

    $dbh->bz_lock_tables('groups WRITE', 'group_group_map WRITE',
                         'bug_group_map WRITE', 'user_group_map WRITE',
                         'group_control_map READ', 'bugs READ', 'profiles READ');

    # Check that the given group ID and regular expression are valid.
    # If tests are successful, trimmed values are returned by CheckGroup*.
    my $gid = CheckGroupID($cgi->param('group'));
    my $regexp = CheckGroupRegexp($cgi->param('regexp'));

    # The name and the description of system groups cannot be edited.
    # We then need to know if the group being edited is a system group.
    my $isbuggroup = $dbh->selectrow_array('SELECT isbuggroup FROM groups
                                            WHERE id = ?', undef, $gid);
    my $name;
    my $desc;
    my $isactive;
    my $chgs = 0;

    # We trust old values given by the template. If they are hacked
    # in a way that some of the tests below become negative, the
    # corresponding attributes are not updated in the DB, which does
    # not hurt.
    if ($isbuggroup) {
        # Check that the group name and its description are valid
        # and return trimmed values if tests are successful.
        $name = CheckGroupName($cgi->param('name'), $gid);
        $desc = CheckGroupDesc($cgi->param('desc'));
        $isactive = $cgi->param('isactive') ? 1 : 0;

        if ($name ne $cgi->param('oldname')) {
            $chgs = 1;
            $dbh->do('UPDATE groups SET name = ? WHERE id = ?',
                      undef, ($name, $gid));
            # If the group is used by some parameters, we have to update
            # these parameters too.
            my $update_params = 0;
            foreach my $group ('chartgroup', 'insidergroup', 'timetrackinggroup') {
                if ($cgi->param('oldname') eq Param($group)) {
                    SetParam($group, $name);
                    $update_params = 1;
                }
            }
            WriteParams() if $update_params;
        }
        if ($desc ne $cgi->param('olddesc')) {
            $chgs = 1;
            $dbh->do('UPDATE groups SET description = ? WHERE id = ?',
                      undef, ($desc, $gid));
        }
        if ($isactive ne $cgi->param('oldisactive')) {
            $chgs = 1;
            $dbh->do('UPDATE groups SET isactive = ? WHERE id = ?',
                      undef, ($isactive, $gid));
            # If the group was mandatory for some products before
            # we deactivated it and we now activate this group again,
            # we have to add all bugs created while this group was
            # disabled in bug_group_map to correctly protect them.
            if ($isactive) { fix_bug_permissions($gid); }
        }
    }
    if ($regexp ne $cgi->param('oldregexp')) {
        $chgs = 1;
        $dbh->do('UPDATE groups SET userregexp = ? WHERE id = ?',
                  undef, ($regexp, $gid));
        RederiveRegexp($regexp, $gid);
    }

    my $sthInsert = $dbh->prepare('INSERT INTO group_group_map
                                   (member_id, grantor_id, grant_type)
                                   VALUES (?, ?, ?)');

    my $sthDelete = $dbh->prepare('DELETE FROM group_group_map
                                    WHERE member_id = ?
                                      AND grantor_id = ?
                                      AND grant_type = ?');

    foreach my $b (grep {/^oldgrp-\d*$/} $cgi->param()) {
        if (defined($cgi->param($b))) {
            $b =~ /^oldgrp-(\d+)$/;
            my $v = $1;
            my $grp = $cgi->param("grp-$v") || 0;
            if (($v != $gid) && ($cgi->param("oldgrp-$v") != $grp)) {
                $chgs = 1;
                if ($grp != 0) {
                    $sthInsert->execute($v, $gid, GROUP_MEMBERSHIP);
                } else {
                    $sthDelete->execute($v, $gid, GROUP_MEMBERSHIP);
                }
            }

            my $bless = $cgi->param("bless-$v") || 0;
            my $oldbless = $cgi->param("oldbless-$v");
            if ((defined $oldbless) and ($oldbless != $bless)) {
                $chgs = 1;
                if ($bless != 0) {
                    $sthInsert->execute($v, $gid, GROUP_BLESS);
                } else {
                    $sthDelete->execute($v, $gid, GROUP_BLESS);
                }
            }

            my $cansee = $cgi->param("cansee-$v") || 0;
            if (Param("usevisibilitygroups") 
               && ($cgi->param("oldcansee-$v") != $cansee)) {
                $chgs = 1;
                if ($cansee != 0) {
                    $sthInsert->execute($v, $gid, GROUP_VISIBLE);
                } else {
                    $sthDelete->execute($v, $gid, GROUP_VISIBLE);
                }
            }

        }
    }

    if ($chgs) {
        # mark the changes
        $dbh->do('UPDATE groups SET last_changed = NOW()
                  WHERE id = ?', undef, $gid);
    }
    $dbh->bz_unlock_tables();
    return $gid, $chgs, $name, $regexp;
}