summaryrefslogtreecommitdiffstats
path: root/buglist.cgi
blob: 8741f434f86af81aed56ff3e9e10ce96faa43c59 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
#!/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): Terry Weissman <terry@mozilla.org>
#                 Dan Mosedale <dmose@mozilla.org>
#                 Stephan Niemz  <st.n@gmx.net>
#                 Andreas Franke <afranke@mathweb.org>
#                 Myk Melez <myk@mozilla.org>
#                 Max Kanat-Alexander <mkanat@bugzilla.org>

################################################################################
# Script Initialization
################################################################################

# Make it harder for us to do dangerous things in Perl.
use strict;

use lib qw(. lib);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::Util;
use Bugzilla::Search;
use Bugzilla::Search::Quicksearch;
use Bugzilla::Search::Saved;
use Bugzilla::User;
use Bugzilla::Bug;
use Bugzilla::Product;
use Bugzilla::Keyword;
use Bugzilla::Field;
use Bugzilla::Status;
use Bugzilla::Token;

use Date::Parse;

my $cgi = Bugzilla->cgi;
my $dbh = Bugzilla->dbh;
my $template = Bugzilla->template;
my $vars = {};
my $buffer = $cgi->query_string();

# We have to check the login here to get the correct footer if an error is
# thrown and to prevent a logged out user to use QuickSearch if 'requirelogin'
# is turned 'on'.
Bugzilla->login();

if (length($buffer) == 0) {
    print $cgi->header(-refresh=> '10; URL=query.cgi');
    ThrowUserError("buglist_parameters_required");
}

# If a parameter starts with cmd-, this means the And or Or button has been
# pressed in the advanced search page with JS turned off.
if (grep { $_ =~ /^cmd\-/ } $cgi->param()) {
    my $url = "query.cgi?$buffer#chart";
    print $cgi->redirect(-location => $url);
    # Generate and return the UI (HTML page) from the appropriate template.
    $vars->{'message'} = "buglist_adding_field";
    $vars->{'url'} = $url;
    $template->process("global/message.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    exit;
}

# If query was POSTed, clean the URL from empty parameters and redirect back to
# itself. This will make advanced search URLs more tolerable.
#
if ($cgi->request_method() eq 'POST') {
    $cgi->clean_search_url();
    my $uri_length = length($cgi->self_url());
    if ($uri_length < CGI_URI_LIMIT) {
        print $cgi->redirect(-url => $cgi->self_url());
        exit;
    }
}

# Determine whether this is a quicksearch query.
my $searchstring = $cgi->param('quicksearch');
if (defined($searchstring)) {
    $buffer = quicksearch($searchstring);
    # Quicksearch may do a redirect, in which case it does not return.
    # If it does return, it has modified $cgi->params so we can use them here
    # as if this had been a normal query from the beginning.
}

# If configured to not allow empty words, reject empty searches from the
# Find a Specific Bug search form, including words being a single or 
# several consecutive whitespaces only.
if (!Bugzilla->params->{'specific_search_allow_empty_words'}
    && defined($cgi->param('content')) && $cgi->param('content') =~ /^\s*$/)
{
    ThrowUserError("buglist_parameters_required");
}

################################################################################
# Data and Security Validation
################################################################################

# Whether or not the user wants to change multiple bugs.
my $dotweak = $cgi->param('tweak') ? 1 : 0;

# Log the user in
if ($dotweak) {
    Bugzilla->login(LOGIN_REQUIRED);
}

# Hack to support legacy applications that think the RDF ctype is at format=rdf.
if (defined $cgi->param('format') && $cgi->param('format') eq "rdf"
    && !defined $cgi->param('ctype')) {
    $cgi->param('ctype', "rdf");
    $cgi->delete('format');
}

# Treat requests for ctype=rss as requests for ctype=atom
if (defined $cgi->param('ctype') && $cgi->param('ctype') eq "rss") {
    $cgi->param('ctype', "atom");
}

# The js ctype presents a security risk; a malicious site could use it  
# to gather information about secure bugs. So, we only allow public bugs to be
# retrieved with this format.
#
# Note that if and when this call clears cookies or has other persistent 
# effects, we'll need to do this another way instead.
if ((defined $cgi->param('ctype')) && ($cgi->param('ctype') eq "js")) {
    Bugzilla->logout_request();
}

# An agent is a program that automatically downloads and extracts data
# on its user's behalf.  If this request comes from an agent, we turn off
# various aspects of bug list functionality so agent requests succeed
# and coexist nicely with regular user requests.  Currently the only agent
# we know about is Firefox's microsummary feature.
my $agent = ($cgi->http('X-Moz') && $cgi->http('X-Moz') =~ /\bmicrosummary\b/);

# Determine the format in which the user would like to receive the output.
# Uses the default format if the user did not specify an output format;
# otherwise validates the user's choice against the list of available formats.
my $format = $template->get_format("list/list", scalar $cgi->param('format'),
                                   scalar $cgi->param('ctype'));

# Use server push to display a "Please wait..." message for the user while
# executing their query if their browser supports it and they are viewing
# the bug list as HTML and they have not disabled it by adding &serverpush=0
# to the URL.
#
# Server push is a Netscape 3+ hack incompatible with MSIE, Lynx, and others. 
# Even Communicator 4.51 has bugs with it, especially during page reload.
# http://www.browsercaps.org used as source of compatible browsers.
# Safari (WebKit) does not support it, despite a UA that says otherwise (bug 188712)
# MSIE 5+ supports it on Mac (but not on Windows) (bug 190370)
#
my $serverpush =
  $format->{'extension'} eq "html"
    && exists $ENV{'HTTP_USER_AGENT'} 
      && $ENV{'HTTP_USER_AGENT'} =~ /Mozilla.[3-9]/ 
        && (($ENV{'HTTP_USER_AGENT'} !~ /[Cc]ompatible/) || ($ENV{'HTTP_USER_AGENT'} =~ /MSIE 5.*Mac_PowerPC/))
          && $ENV{'HTTP_USER_AGENT'} !~ /WebKit/
            && !$agent
              && !defined($cgi->param('serverpush'))
                || $cgi->param('serverpush');

my $order = $cgi->param('order') || "";

# The params object to use for the actual query itself
my $params;

# If the user is retrieving the last bug list they looked at, hack the buffer
# storing the query string so that it looks like a query retrieving those bugs.
if (defined $cgi->param('regetlastlist')) {
    $cgi->cookie('BUGLIST') || ThrowUserError("missing_cookie");

    $order = "reuse last sort" unless $order;
    my $bug_id = $cgi->cookie('BUGLIST');
    $bug_id =~ s/:/,/g;
    # set up the params for this new query
    $params = new Bugzilla::CGI({
                                 bug_id => $bug_id,
                                 order => $order,
                                });
}

# Figure out whether or not the user is doing a fulltext search.  If not,
# we'll remove the relevance column from the lists of columns to display
# and order by, since relevance only exists when doing a fulltext search.
my $fulltext = 0;
if ($cgi->param('content')) { $fulltext = 1 }
my @charts = map(/^field(\d-\d-\d)$/ ? $1 : (), $cgi->param());
foreach my $chart (@charts) {
    if ($cgi->param("field$chart") eq 'content' && $cgi->param("value$chart")) {
        $fulltext = 1;
        last;
    }
}

################################################################################
# Utilities
################################################################################

sub DiffDate {
    my ($datestr) = @_;
    my $date = str2time($datestr);
    my $age = time() - $date;

    if( $age < 18*60*60 ) {
        $date = format_time($datestr, '%H:%M:%S');
    } elsif( $age < 6*24*60*60 ) {
        $date = format_time($datestr, '%a %H:%M');
    } else {
        $date = format_time($datestr, '%Y-%m-%d');
    }
    return $date;
}

sub LookupNamedQuery {
    my ($name, $sharer_id, $query_type, $throw_error) = @_;
    $throw_error = 1 unless defined $throw_error;

    Bugzilla->login(LOGIN_REQUIRED);

    my $constructor = $throw_error ? 'check' : 'new';
    my $query = Bugzilla::Search::Saved->$constructor(
        { user => $sharer_id, name => $name });

    return $query if (!$query and !$throw_error);

    if (defined $query_type and $query->type != $query_type) {
        ThrowUserError("missing_query", { queryname => $name,
                                          sharer_id => $sharer_id });
    }

    $query->url
       || ThrowUserError("buglist_parameters_required", { queryname  => $name });

    return wantarray ? ($query->url, $query->id) : $query->url;
}

# Inserts a Named Query (a "Saved Search") into the database, or
# updates a Named Query that already exists..
# Takes four arguments:
# userid - The userid who the Named Query will belong to.
# query_name - A string that names the new Named Query, or the name
#              of an old Named Query to update. If this is blank, we
#              will throw a UserError. Leading and trailing whitespace
#              will be stripped from this value before it is inserted
#              into the DB.
# query - The query part of the buglist.cgi URL, unencoded. Must not be 
#         empty, or we will throw a UserError.
# link_in_footer (optional) - 1 if the Named Query should be 
# displayed in the user's footer, 0 otherwise.
# query_type (optional) - 1 if the Named Query contains a list of
# bug IDs only, 0 otherwise (default).
#
# All parameters are validated before passing them into the database.
#
# Returns: A boolean true value if the query existed in the database 
# before, and we updated it. A boolean false value otherwise.
sub InsertNamedQuery {
    my ($query_name, $query, $link_in_footer, $query_type) = @_;
    my $dbh = Bugzilla->dbh;

    $query_name = trim($query_name);
    my ($query_obj) = grep {lc($_->name) eq lc($query_name)} @{Bugzilla->user->queries};

    if ($query_obj) {
        $query_obj->set_name($query_name);
        $query_obj->set_url($query);
        $query_obj->set_query_type($query_type);
        $query_obj->update();
    } else {
        Bugzilla::Search::Saved->create({
            name           => $query_name,
            query          => $query,
            query_type     => $query_type,
            link_in_footer => $link_in_footer
        });
    }

    return $query_obj ? 1 : 0;
}

sub LookupSeries {
    my ($series_id) = @_;
    detaint_natural($series_id) || ThrowCodeError("invalid_series_id");
    
    my $dbh = Bugzilla->dbh;
    my $result = $dbh->selectrow_array("SELECT query FROM series " .
                                       "WHERE series_id = ?"
                                       , undef, ($series_id));
    $result
           || ThrowCodeError("invalid_series_id", {'series_id' => $series_id});
    return $result;
}

sub GetQuip {
    my $dbh = Bugzilla->dbh;
    # COUNT is quick because it is cached for MySQL. We may want to revisit
    # this when we support other databases.
    my $count = $dbh->selectrow_array("SELECT COUNT(quip)"
                                    . " FROM quips WHERE approved = 1");
    my $random = int(rand($count));
    my $quip = 
        $dbh->selectrow_array("SELECT quip FROM quips WHERE approved = 1 " . 
                              $dbh->sql_limit(1, $random));
    return $quip;
}

# Return groups available for at least one product of the buglist.
sub GetGroups {
    my $product_names = shift;
    my $user = Bugzilla->user;
    my %legal_groups;

    foreach my $product_name (@$product_names) {
        my $product = new Bugzilla::Product({name => $product_name});

        foreach my $gid (keys %{$product->group_controls}) {
            # The user can only edit groups he belongs to.
            next unless $user->in_group_id($gid);

            # The user has no control on groups marked as NA or MANDATORY.
            my $group = $product->group_controls->{$gid};
            next if ($group->{membercontrol} == CONTROLMAPMANDATORY
                     || $group->{membercontrol} == CONTROLMAPNA);

            # It's fine to include inactive groups. Those will be marked
            # as "remove only" when editing several bugs at once.
            $legal_groups{$gid} ||= $group->{group};
        }
    }
    # Return a list of group objects.
    return [values %legal_groups];
}

sub _close_standby_message {
    my ($contenttype, $disposition, $serverpush) = @_;
    my $cgi = Bugzilla->cgi;

    # Close the "please wait" page, then open the buglist page
    if ($serverpush) {
        print $cgi->multipart_end();
        print $cgi->multipart_start(-type                => $contenttype,
                                    -content_disposition => $disposition);
    }
    else {
        print $cgi->header(-type                => $contenttype,
                           -content_disposition => $disposition);
    }
}


################################################################################
# Command Execution
################################################################################

my $cmdtype   = $cgi->param('cmdtype')   || '';
my $remaction = $cgi->param('remaction') || '';

# Backwards-compatibility - the old interface had cmdtype="runnamed" to run
# a named command, and we can't break this because it's in bookmarks.
if ($cmdtype eq "runnamed") {  
    $cmdtype = "dorem";
    $remaction = "run";
}

# Now we're going to be running, so ensure that the params object is set up,
# using ||= so that we only do so if someone hasn't overridden this 
# earlier, for example by setting up a named query search.

# This will be modified, so make a copy.
$params ||= new Bugzilla::CGI($cgi);

# Generate a reasonable filename for the user agent to suggest to the user
# when the user saves the bug list.  Uses the name of the remembered query
# if available.  We have to do this now, even though we return HTTP headers 
# at the end, because the fact that there is a remembered query gets 
# forgotten in the process of retrieving it.
my @time = localtime(time());
my $date = sprintf "%04d-%02d-%02d", 1900+$time[5],$time[4]+1,$time[3];
my $filename = "bugs-$date.$format->{extension}";
if ($cmdtype eq "dorem" && $remaction =~ /^run/) {
    $filename = $cgi->param('namedcmd') . "-$date.$format->{extension}";
    # Remove white-space from the filename so the user cannot tamper
    # with the HTTP headers.
    $filename =~ s/\s/_/g;
}
$filename =~ s/\\/\\\\/g; # escape backslashes
$filename =~ s/"/\\"/g; # escape quotes

# Take appropriate action based on user's request.
if ($cmdtype eq "dorem") {  
    if ($remaction eq "run") {
        my $query_id;
        ($buffer, $query_id) = LookupNamedQuery(scalar $cgi->param("namedcmd"),
                                                scalar $cgi->param('sharer_id'));
        # If this is the user's own query, remember information about it
        # so that it can be modified easily.
        $vars->{'searchname'} = $cgi->param('namedcmd');
        if (!$cgi->param('sharer_id') ||
            $cgi->param('sharer_id') == Bugzilla->user->id) {
            $vars->{'searchtype'} = "saved";
            $vars->{'search_id'} = $query_id;
        }
        $params = new Bugzilla::CGI($buffer);
        $order = $params->param('order') || $order;

    }
    elsif ($remaction eq "runseries") {
        $buffer = LookupSeries(scalar $cgi->param("series_id"));
        $vars->{'searchname'} = $cgi->param('namedcmd');
        $vars->{'searchtype'} = "series";
        $params = new Bugzilla::CGI($buffer);
        $order = $params->param('order') || $order;
    }
    elsif ($remaction eq "forget") {
        my $user = Bugzilla->login(LOGIN_REQUIRED);
        # Copy the name into a variable, so that we can trick_taint it for
        # the DB. We know it's safe, because we're using placeholders in 
        # the SQL, and the SQL is only a DELETE.
        my $qname = $cgi->param('namedcmd');
        trick_taint($qname);

        # Do not forget the saved search if it is being used in a whine
        my $whines_in_use = 
            $dbh->selectcol_arrayref('SELECT DISTINCT whine_events.subject
                                                 FROM whine_events
                                           INNER JOIN whine_queries
                                                   ON whine_queries.eventid
                                                      = whine_events.id
                                                WHERE whine_events.owner_userid
                                                      = ?
                                                  AND whine_queries.query_name
                                                      = ?
                                      ', undef, $user->id, $qname);
        if (scalar(@$whines_in_use)) {
            ThrowUserError('saved_search_used_by_whines', 
                           { subjects    => join(',', @$whines_in_use),
                             search_name => $qname                      }
            );
        }

        # If we are here, then we can safely remove the saved search
        my $query_id;
        ($buffer, $query_id) = LookupNamedQuery(scalar $cgi->param("namedcmd"),
                                                $user->id);
        if (!$query_id) {
            # The user has no query of this name. Play along.
        }
        else {
            # Make sure the user really wants to delete his saved search.
            my $token = $cgi->param('token');
            check_hash_token($token, [$query_id, $qname]);

            $dbh->do('DELETE FROM namedqueries
                            WHERE id = ?',
                     undef, $query_id);
            $dbh->do('DELETE FROM namedqueries_link_in_footer
                            WHERE namedquery_id = ?',
                     undef, $query_id);
            $dbh->do('DELETE FROM namedquery_group_map
                            WHERE namedquery_id = ?',
                     undef, $query_id);
        }

        # Now reset the cached queries
        $user->flush_queries_cache();

        print $cgi->header();
        # Generate and return the UI (HTML page) from the appropriate template.
        $vars->{'message'} = "buglist_query_gone";
        $vars->{'namedcmd'} = $qname;
        $vars->{'url'} = "buglist.cgi?newquery=" . url_quote($buffer) . "&cmdtype=doit&remtype=asnamed&newqueryname=" . url_quote($qname);
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    }
}
elsif (($cmdtype eq "doit") && defined $cgi->param('remtype')) {
    if ($cgi->param('remtype') eq "asdefault") {
        my $user = Bugzilla->login(LOGIN_REQUIRED);
        InsertNamedQuery(DEFAULT_QUERY_NAME, $buffer);
        $vars->{'message'} = "buglist_new_default_query";
    }
    elsif ($cgi->param('remtype') eq "asnamed") {
        my $user = Bugzilla->login(LOGIN_REQUIRED);
        my $query_name = $cgi->param('newqueryname');
        my $new_query = $cgi->param('newquery');
        my $query_type = QUERY_LIST;
        # If list_of_bugs is true, we are adding/removing individual bugs
        # to a saved search. We get the existing list of bug IDs (if any)
        # and add/remove the passed ones.
        if ($cgi->param('list_of_bugs')) {
            # We add or remove bugs based on the action choosen.
            my $action = trim($cgi->param('action') || '');
            $action =~ /^(add|remove)$/
              || ThrowUserError('unknown_action', {action => $action});

            # If we are removing bugs, then we must have an existing
            # saved search selected.
            if ($action eq 'remove') {
                $query_name && ThrowUserError('no_bugs_to_remove');
            }

            my %bug_ids;
            my $is_new_name = 0;
            if ($query_name) {
                my ($query, $query_id) =
                  LookupNamedQuery($query_name, undef, QUERY_LIST, !THROW_ERROR);
                # Make sure this name is not already in use by a normal saved search.
                if ($query) {
                    ThrowUserError('query_name_exists', {name     => $query_name,
                                                         query_id => $query_id});
                }
                $is_new_name = 1;
            }
            # If no new tag name has been given, use the selected one.
            $query_name ||= $cgi->param('oldqueryname');

            # Don't throw an error if it's a new tag name: if the tag already
            # exists, add/remove bugs to it, else create it. But if we are
            # considering an existing tag, then it has to exist and we throw
            # an error if it doesn't (hence the usage of !$is_new_name).
            my ($old_query, $query_id) =
              LookupNamedQuery($query_name, undef, LIST_OF_BUGS, !$is_new_name);

            if ($old_query) {
                # We get the encoded query. We need to decode it.
                my $old_cgi = new Bugzilla::CGI($old_query);
                foreach my $bug_id (split /[\s,]+/, scalar $old_cgi->param('bug_id')) {
                    $bug_ids{$bug_id} = 1 if detaint_natural($bug_id);
                }
            }

            my $keep_bug = ($action eq 'add') ? 1 : 0;
            my $changes = 0;
            foreach my $bug_id (split(/[\s,]+/, $cgi->param('bug_ids'))) {
                next unless $bug_id;
                my $bug = Bugzilla::Bug->check($bug_id);
                $bug_ids{$bug->id} = $keep_bug;
                $changes = 1;
            }
            ThrowUserError('no_bug_ids',
                           {'action' => $action,
                            'tag' => $query_name})
              unless $changes;

            # Only keep bug IDs we want to add/keep. Disregard deleted ones.
            my @bug_ids = grep { $bug_ids{$_} == 1 } keys %bug_ids;
            # If the list is now empty, we could as well delete it completely.
            if (!scalar @bug_ids) {
                ThrowUserError('no_bugs_in_list', {name     => $query_name,
                                                   query_id => $query_id});
            }
            $new_query = "bug_id=" . join(',', sort {$a <=> $b} @bug_ids);
            $query_type = LIST_OF_BUGS;
        }
        my $tofooter = 1;
        my $existed_before = InsertNamedQuery($query_name, $new_query,
                                              $tofooter, $query_type);
        if ($existed_before) {
            $vars->{'message'} = "buglist_updated_named_query";
        }
        else {
            $vars->{'message'} = "buglist_new_named_query";
        }

        # Make sure to invalidate any cached query data, so that the footer is
        # correctly displayed
        $user->flush_queries_cache();

        $vars->{'queryname'} = $query_name;
        
        print $cgi->header();
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    }
}

# backward compatibility hack: if the saved query doesn't say which
# form was used to create it, assume it was on the advanced query
# form - see bug 252295
if (!$params->param('query_format')) {
    $params->param('query_format', 'advanced');
    $buffer = $params->query_string;
}

################################################################################
# Column Definition
################################################################################

my $columns = Bugzilla::Search::COLUMNS;

################################################################################
# Display Column Determination
################################################################################

# Determine the columns that will be displayed in the bug list via the 
# columnlist CGI parameter, the user's preferences, or the default.
my @displaycolumns = ();
if (defined $params->param('columnlist')) {
    if ($params->param('columnlist') eq "all") {
        # If the value of the CGI parameter is "all", display all columns,
        # but remove the redundant "short_desc" column.
        @displaycolumns = grep($_ ne 'short_desc', keys(%$columns));
    }
    else {
        @displaycolumns = split(/[ ,]+/, $params->param('columnlist'));
    }
}
elsif (defined $cgi->cookie('COLUMNLIST')) {
    # 2002-10-31 Rename column names (see bug 176461)
    my $columnlist = $cgi->cookie('COLUMNLIST');
    $columnlist =~ s/\bowner\b/assigned_to/;
    $columnlist =~ s/\bowner_realname\b/assigned_to_realname/;
    $columnlist =~ s/\bplatform\b/rep_platform/;
    $columnlist =~ s/\bseverity\b/bug_severity/;
    $columnlist =~ s/\bstatus\b/bug_status/;
    $columnlist =~ s/\bsummaryfull\b/short_desc/;
    $columnlist =~ s/\bsummary\b/short_short_desc/;

    # Use the columns listed in the user's preferences.
    @displaycolumns = split(/ /, $columnlist);
}
else {
    # Use the default list of columns.
    @displaycolumns = DEFAULT_COLUMN_LIST;
}

# Weed out columns that don't actually exist to prevent the user 
# from hacking their column list cookie to grab data to which they 
# should not have access.  Detaint the data along the way.
@displaycolumns = grep($columns->{$_} && trick_taint($_), @displaycolumns);

# Remove the "ID" column from the list because bug IDs are always displayed
# and are hard-coded into the display templates.
@displaycolumns = grep($_ ne 'bug_id', @displaycolumns);

# Remove the timetracking columns if they are not a part of the group
# (happens if a user had access to time tracking and it was revoked/disabled)
if (!Bugzilla->user->is_timetracker) {
   @displaycolumns = grep($_ ne 'estimated_time', @displaycolumns);
   @displaycolumns = grep($_ ne 'remaining_time', @displaycolumns);
   @displaycolumns = grep($_ ne 'actual_time', @displaycolumns);
   @displaycolumns = grep($_ ne 'percentage_complete', @displaycolumns);
   @displaycolumns = grep($_ ne 'deadline', @displaycolumns);
}

# Remove the relevance column if the user is not doing a fulltext search.
if (grep('relevance', @displaycolumns) && !$fulltext) {
    @displaycolumns = grep($_ ne 'relevance', @displaycolumns);
}


################################################################################
# Select Column Determination
################################################################################

# Generate the list of columns that will be selected in the SQL query.

# The bug ID is always selected because bug IDs are always displayed.
# Severity, priority, resolution and status are required for buglist
# CSS classes.
my @selectcolumns = ("bug_id", "bug_severity", "priority", "bug_status",
                     "resolution", "product");

# remaining and actual_time are required for percentage_complete calculation:
if (grep { $_ eq "percentage_complete" } @displaycolumns) {
    push (@selectcolumns, "remaining_time");
    push (@selectcolumns, "actual_time");
}

# Make sure that the login_name version of a field is always also
# requested if the realname version is requested, so that we can
# display the login name when the realname is empty.
my @realname_fields = grep(/_realname$/, @displaycolumns);
foreach my $item (@realname_fields) {
    my $login_field = $item;
    $login_field =~ s/_realname$//;
    if (!grep($_ eq $login_field, @selectcolumns)) {
        push(@selectcolumns, $login_field);
    }
}

# Display columns are selected because otherwise we could not display them.
foreach my $col (@displaycolumns) {
    push (@selectcolumns, $col) if !grep($_ eq $col, @selectcolumns);
}

# If the user is editing multiple bugs, we also make sure to select the 
# status, because the values of that field determines what options the user
# has for modifying the bugs.
if ($dotweak) {
    push(@selectcolumns, "bug_status") if !grep($_ eq 'bug_status', @selectcolumns);
}

if ($format->{'extension'} eq 'ics') {
    push(@selectcolumns, "opendate") if !grep($_ eq 'opendate', @selectcolumns);
}

if ($format->{'extension'} eq 'atom') {
    # The title of the Atom feed will be the same one as for the bug list.
    $vars->{'title'} = $cgi->param('title');

    # This is the list of fields that are needed by the Atom filter.
    my @required_atom_columns = (
      'short_desc',
      'opendate',
      'changeddate',
      'reporter',
      'reporter_realname',
      'priority',
      'bug_severity',
      'assigned_to',
      'assigned_to_realname',
      'bug_status',
      'product',
      'component',
      'resolution'
    );
    push(@required_atom_columns, 'target_milestone') if Bugzilla->params->{'usetargetmilestone'};

    foreach my $required (@required_atom_columns) {
        push(@selectcolumns, $required) if !grep($_ eq $required,@selectcolumns);
    }
}

################################################################################
# Sort Order Determination
################################################################################

# Add to the query some instructions for sorting the bug list.

# First check if we'll want to reuse the last sorting order; that happens if
# the order is not defined or its value is "reuse last sort"
if (!$order || $order =~ /^reuse/i) {
    if ($cgi->cookie('LASTORDER')) {
        $order = $cgi->cookie('LASTORDER');
       
        # Cookies from early versions of Specific Search included this text,
        # which is now invalid.
        $order =~ s/ LIMIT 200//;
    }
    else {
        $order = '';  # Remove possible "reuse" identifier as unnecessary
    }
}

if ($order) {
    # Convert the value of the "order" form field into a list of columns
    # by which to sort the results.
    ORDER: for ($order) {
        /^Bug Number$/ && do {
            $order = "bug_id";
            last ORDER;
        };
        /^Importance$/ && do {
            $order = "priority,bug_severity";
            last ORDER;
        };
        /^Assignee$/ && do {
            $order = "assigned_to,bug_status,priority,bug_id";
            last ORDER;
        };
        /^Last Changed$/ && do {
            $order = "changeddate,bug_status,priority,assigned_to,bug_id";
            last ORDER;
        };
        do {
            my (@order, @invalid_fragments);

            # A custom list of columns.  Make sure each column is valid.
            foreach my $fragment (split(/,/, $order)) {
                $fragment = trim($fragment);
                next unless $fragment;
                my ($column_name, $direction) = split_order_term($fragment);
                $column_name = translate_old_column($column_name);

                # Special handlings for certain columns
                next if $column_name eq 'relevance' && !$fulltext;
                                
                if (exists $columns->{$column_name}) {
                    $direction = " $direction" if $direction;
                    push(@order, "$column_name$direction");
                }
                else {
                    push(@invalid_fragments, $fragment);
                }
            }
            if (scalar @invalid_fragments) {
                $vars->{'message'} = 'invalid_column_name';
                $vars->{'invalid_fragments'} = \@invalid_fragments;
            }

            $order = join(",", @order);
            # Now that we have checked that all columns in the order are valid,
            # detaint the order string.
            trick_taint($order) if $order;
        };
    }
}

if (!$order) {
    # DEFAULT
    $order = "bug_status,priority,assigned_to,bug_id";
}

my @orderstrings = split(/,\s*/, $order);

# Generate the basic SQL query that will be used to generate the bug list.
my $search = new Bugzilla::Search('fields' => \@selectcolumns, 
                                  'params' => $params,
                                  'order' => \@orderstrings);
my $query = $search->getSQL();
$vars->{'search_description'} = $search->search_description;

if (defined $cgi->param('limit')) {
    my $limit = $cgi->param('limit');
    if (detaint_natural($limit)) {
        $query .= " " . $dbh->sql_limit($limit);
    }
}
elsif ($fulltext) {
    $query .= " " . $dbh->sql_limit(FULLTEXT_BUGLIST_LIMIT);
    if ($cgi->param('order') && $cgi->param('order') =~ /^relevance/) {
        $vars->{'message'} = 'buglist_sorted_by_relevance';
    }
}


################################################################################
# Query Execution
################################################################################

if ($cgi->param('debug')) {
    $vars->{'debug'} = 1;
    $vars->{'query'} = $query;
    # Explains are limited to admins because you could use them to figure
    # out how many hidden bugs are in a particular product (by doing
    # searches and looking at the number of rows the explain says it's
    # examining).
    if (Bugzilla->user->in_group('admin')) {
        $vars->{'query_explain'} = $dbh->bz_explain($query);
    }
}

# Time to use server push to display an interim message to the user until
# the query completes and we can display the bug list.
if ($serverpush) {
    print $cgi->multipart_init();
    print $cgi->multipart_start(-type => 'text/html');

    # Generate and return the UI (HTML page) from the appropriate template.
    $template->process("list/server-push.html.tmpl", $vars)
      || ThrowTemplateError($template->error());

    # Under mod_perl, flush stdout so that the page actually shows up.
    if ($ENV{MOD_PERL}) {
        require Apache2::RequestUtil;
        Apache2::RequestUtil->request->rflush();
    }

    # Don't do multipart_end() until we're ready to display the replacement
    # page, otherwise any errors that happen before then (like SQL errors)
    # will result in a blank page being shown to the user instead of the error.
}

# Connect to the shadow database if this installation is using one to improve
# query performance.
$dbh = Bugzilla->switch_to_shadow_db();

# Normally, we ignore SIGTERM and SIGPIPE, but we need to
# respond to them here to prevent someone DOSing us by reloading a query
# a large number of times.
$::SIG{TERM} = 'DEFAULT';
$::SIG{PIPE} = 'DEFAULT';

# Execute the query.
my $buglist_sth = $dbh->prepare($query);
$buglist_sth->execute();


################################################################################
# Results Retrieval
################################################################################

# Retrieve the query results one row at a time and write the data into a list
# of Perl records.

# If we're doing time tracking, then keep totals for all bugs.
my $percentage_complete = grep($_ eq 'percentage_complete', @displaycolumns);
my $estimated_time      = grep($_ eq 'estimated_time', @displaycolumns);
my $remaining_time      = grep($_ eq 'remaining_time', @displaycolumns)
                            || $percentage_complete;
my $actual_time         = grep($_ eq 'actual_time', @displaycolumns)
                            || $percentage_complete;

my $time_info = { 'estimated_time' => 0,
                  'remaining_time' => 0,
                  'actual_time' => 0,
                  'percentage_complete' => 0,
                  'time_present' => ($estimated_time || $remaining_time ||
                                     $actual_time || $percentage_complete),
                };
    
my $bugowners = {};
my $bugproducts = {};
my $bugstatuses = {};
my @bugidlist;

my @bugs; # the list of records

while (my @row = $buglist_sth->fetchrow_array()) {
    my $bug = {}; # a record

    # Slurp the row of data into the record.
    # The second from last column in the record is the number of groups
    # to which the bug is restricted.
    foreach my $column (@selectcolumns) {
        $bug->{$column} = shift @row;
    }

    # Process certain values further (i.e. date format conversion).
    if ($bug->{'changeddate'}) {
        $bug->{'changeddate'} =~ 
            s/^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})$/$1-$2-$3 $4:$5:$6/;

        $bug->{'changedtime'} = $bug->{'changeddate'}; # for iCalendar and Atom
        $bug->{'changeddate'} = DiffDate($bug->{'changeddate'});
    }

    if ($bug->{'opendate'}) {
        $bug->{'opentime'} = $bug->{'opendate'}; # for iCalendar
        $bug->{'opendate'} = DiffDate($bug->{'opendate'});
    }

    # Record the assignee, product, and status in the big hashes of those things.
    $bugowners->{$bug->{'assigned_to'}} = 1 if $bug->{'assigned_to'};
    $bugproducts->{$bug->{'product'}} = 1 if $bug->{'product'};
    $bugstatuses->{$bug->{'bug_status'}} = 1 if $bug->{'bug_status'};

    $bug->{'secure_mode'} = undef;

    # Add the record to the list.
    push(@bugs, $bug);

    # Add id to list for checking for bug privacy later
    push(@bugidlist, $bug->{'bug_id'});

    # Compute time tracking info.
    $time_info->{'estimated_time'} += $bug->{'estimated_time'} if ($estimated_time);
    $time_info->{'remaining_time'} += $bug->{'remaining_time'} if ($remaining_time);
    $time_info->{'actual_time'}    += $bug->{'actual_time'}    if ($actual_time);
}

# Check for bug privacy and set $bug->{'secure_mode'} to 'implied' or 'manual'
# based on whether the privacy is simply product implied (by mandatory groups)
# or because of human choice
my %min_membercontrol;
if (@bugidlist) {
    my $sth = $dbh->prepare(
        "SELECT DISTINCT bugs.bug_id, MIN(group_control_map.membercontrol) " .
          "FROM bugs " .
    "INNER JOIN bug_group_map " .
            "ON bugs.bug_id = bug_group_map.bug_id " .
     "LEFT JOIN group_control_map " .
            "ON group_control_map.product_id = bugs.product_id " .
           "AND group_control_map.group_id = bug_group_map.group_id " .
         "WHERE " . $dbh->sql_in('bugs.bug_id', \@bugidlist) . 
            $dbh->sql_group_by('bugs.bug_id'));
    $sth->execute();
    while (my ($bug_id, $min_membercontrol) = $sth->fetchrow_array()) {
        $min_membercontrol{$bug_id} = $min_membercontrol || CONTROLMAPNA;
    }
    foreach my $bug (@bugs) {
        next unless defined($min_membercontrol{$bug->{'bug_id'}});
        if ($min_membercontrol{$bug->{'bug_id'}} == CONTROLMAPMANDATORY) {
            $bug->{'secure_mode'} = 'implied';
        }
        else {
            $bug->{'secure_mode'} = 'manual';
        }
    }
}

# Compute percentage complete without rounding.
my $sum = $time_info->{'actual_time'}+$time_info->{'remaining_time'};
if ($sum > 0) {
    $time_info->{'percentage_complete'} = 100*$time_info->{'actual_time'}/$sum;
}
else { # remaining_time <= 0 
    $time_info->{'percentage_complete'} = 0
}                             

################################################################################
# Template Variable Definition
################################################################################

# Define the variables and functions that will be passed to the UI template.

$vars->{'bugs'} = \@bugs;
$vars->{'buglist'} = \@bugidlist;
$vars->{'buglist_joined'} = join(',', @bugidlist);
$vars->{'columns'} = $columns;
$vars->{'displaycolumns'} = \@displaycolumns;

$vars->{'openstates'} = [BUG_STATE_OPEN];
$vars->{'closedstates'} = [map {$_->name} closed_bug_statuses()];

# The iCal file needs priorities ordered from 1 to 9 (highest to lowest)
# If there are more than 9 values, just make all the lower ones 9
if ($format->{'extension'} eq 'ics') {
    my $n = 1;
    $vars->{'ics_priorities'} = {};
    my $priorities = get_legal_field_values('priority');
    foreach my $p (@$priorities) {
        $vars->{'ics_priorities'}->{$p} = ($n > 9) ? 9 : $n++;
    }
}

# The list of query fields in URL query string format, used when creating
# URLs to the same query results page with different parameters (such as
# a different sort order or when taking some action on the set of query
# results).  To get this string, we call the Bugzilla::CGI::canoncalise_query
# function with a list of elements to be removed from the URL.
$vars->{'urlquerypart'} = $params->canonicalise_query('order',
                                                      'cmdtype',
                                                      'query_based_on');
$vars->{'order'} = $order;
$vars->{'caneditbugs'} = 1;
$vars->{'time_info'} = $time_info;

if (!Bugzilla->user->in_group('editbugs')) {
    foreach my $product (keys %$bugproducts) {
        my $prod = new Bugzilla::Product({name => $product});
        if (!Bugzilla->user->in_group('editbugs', $prod->id)) {
            $vars->{'caneditbugs'} = 0;
            last;
        }
    }
}

my @bugowners = keys %$bugowners;
if (scalar(@bugowners) > 1 && Bugzilla->user->in_group('editbugs')) {
    my $suffix = Bugzilla->params->{'emailsuffix'};
    map(s/$/$suffix/, @bugowners) if $suffix;
    my $bugowners = join(",", @bugowners);
    $vars->{'bugowners'} = $bugowners;
}

# Whether or not to split the column titles across two rows to make
# the list more compact.
$vars->{'splitheader'} = $cgi->cookie('SPLITHEADER') ? 1 : 0;

$vars->{'quip'} = GetQuip();
$vars->{'currenttime'} = localtime(time());

# See if there's only one product in all the results (or only one product
# that we searched for), which allows us to provide more helpful links.
my @products = keys %$bugproducts;
my $one_product;
if (scalar(@products) == 1) {
    $one_product = new Bugzilla::Product({ name => $products[0] });
}
# This is used in the "Zarroo Boogs" case.
elsif (my @product_input = $cgi->param('product')) {
    if (scalar(@product_input) == 1 and $product_input[0] ne '') {
        $one_product = new Bugzilla::Product({ name => $cgi->param('product') });
    }
}
# We only want the template to use it if the user can actually 
# enter bugs against it.
if ($one_product && Bugzilla->user->can_enter_product($one_product)) {
    $vars->{'one_product'} = $one_product;
}

# The following variables are used when the user is making changes to multiple bugs.
if ($dotweak && scalar @bugs) {
    if (!$vars->{'caneditbugs'}) {
        _close_standby_message('text/html', 'inline', $serverpush);
        ThrowUserError('auth_failure', {group  => 'editbugs',
                                        action => 'modify',
                                        object => 'multiple_bugs'});
    }
    $vars->{'dotweak'} = 1;
  
    # issue_session_token needs to write to the master DB.
    Bugzilla->switch_to_main_db();
    $vars->{'token'} = issue_session_token('buglist_mass_change');
    Bugzilla->switch_to_shadow_db();

    $vars->{'products'} = Bugzilla->user->get_enterable_products;
    $vars->{'platforms'} = get_legal_field_values('rep_platform');
    $vars->{'op_sys'} = get_legal_field_values('op_sys');
    $vars->{'priorities'} = get_legal_field_values('priority');
    $vars->{'severities'} = get_legal_field_values('bug_severity');
    $vars->{'resolutions'} = get_legal_field_values('resolution');

    # Convert bug statuses to their ID.
    my @bug_statuses = map {$dbh->quote($_)} keys %$bugstatuses;
    my $bug_status_ids =
      $dbh->selectcol_arrayref('SELECT id FROM bug_status
                               WHERE ' . $dbh->sql_in('value', \@bug_statuses));

    # This query collects new statuses which are common to all current bug statuses.
    # It also accepts transitions where the bug status doesn't change.
    $bug_status_ids =
      $dbh->selectcol_arrayref(
            'SELECT DISTINCT sw1.new_status
               FROM status_workflow sw1
         INNER JOIN bug_status
                 ON bug_status.id = sw1.new_status
              WHERE bug_status.isactive = 1
                AND NOT EXISTS 
                   (SELECT * FROM status_workflow sw2
                     WHERE sw2.old_status != sw1.new_status 
                           AND '
                         . $dbh->sql_in('sw2.old_status', $bug_status_ids)
                         . ' AND NOT EXISTS 
                           (SELECT * FROM status_workflow sw3
                             WHERE sw3.new_status = sw1.new_status
                                   AND sw3.old_status = sw2.old_status))');

    $vars->{'current_bug_statuses'} = [keys %$bugstatuses];
    $vars->{'new_bug_statuses'} = Bugzilla::Status->new_from_list($bug_status_ids);

    # The groups the user belongs to and which are editable for the given buglist.
    $vars->{'groups'} = GetGroups(\@products);

    # If all bugs being changed are in the same product, the user can change
    # their version and component, so generate a list of products, a list of
    # versions for the product (if there is only one product on the list of
    # products), and a list of components for the product.
    if ($one_product) {
        $vars->{'versions'} = [map($_->name ,@{ $one_product->versions })];
        $vars->{'components'} = [map($_->name, @{ $one_product->components })];
        if (Bugzilla->params->{'usetargetmilestone'}) {
            $vars->{'targetmilestones'} = [map($_->name, 
                                               @{ $one_product->milestones })];
        }
    }
}

# If we're editing a stored query, use the existing query name as default for
# the "Remember search as" field.
$vars->{'defaultsavename'} = $cgi->param('query_based_on');

# If we did a quick search then redisplay the previously entered search 
# string in the text field.
$vars->{'quicksearch'} = $searchstring;

################################################################################
# HTTP Header Generation
################################################################################

# Generate HTTP headers

my $contenttype;
my $disposition = "inline";

if ($format->{'extension'} eq "html" && !$agent) {
    if ($order && !$cgi->param('sharer_id')) {
        $cgi->send_cookie(-name => 'LASTORDER',
                          -value => $order,
                          -expires => 'Fri, 01-Jan-2038 00:00:00 GMT');
    }
    my $bugids = join(":", @bugidlist);
    # See also Bug 111999
    if (length($bugids) == 0) {
        $cgi->remove_cookie('BUGLIST');
    }
    elsif (length($bugids) < 4000) {
        $cgi->send_cookie(-name => 'BUGLIST',
                          -value => $bugids,
                          -expires => 'Fri, 01-Jan-2038 00:00:00 GMT');
    }
    else {
        $cgi->remove_cookie('BUGLIST');
        $vars->{'toolong'} = 1;
    }

    $contenttype = "text/html";
}
else {
    $contenttype = $format->{'ctype'};
}

if ($format->{'extension'} eq "csv") {
    # We set CSV files to be downloaded, as they are designed for importing
    # into other programs.
    $disposition = "attachment";
}

# Suggest a name for the bug list if the user wants to save it as a file.
$disposition .= "; filename=\"$filename\"";

_close_standby_message($contenttype, $disposition, $serverpush);

################################################################################
# Content Generation
################################################################################

# Generate and return the UI (HTML page) from the appropriate template.
$template->process($format->{'template'}, $vars)
  || ThrowTemplateError($template->error());


################################################################################
# Script Conclusion
################################################################################

print $cgi->multipart_final() if $serverpush;