summaryrefslogtreecommitdiffstats
path: root/buglist.cgi
blob: 438b673ae0c142e620d6c8168c7eb6a101cfb0e8 (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
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
#!/usr/bonsaitools/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>

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

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

use lib qw(.);

use vars qw( $template $vars );

# Include the Bugzilla CGI and general utility library.
require "CGI.pl";

# Shut up misguided -w warnings about "used only once".  "use vars" just
# doesn't work for me.
sub sillyness {
    my $zz;
    $zz = $::db_name;
    $zz = @::components;
    $zz = @::default_column_list;
    $zz = $::defaultqueryname;
    $zz = @::dontchange;
    $zz = @::legal_keywords;
    $zz = @::legal_platform;
    $zz = @::legal_priority;
    $zz = @::legal_product;
    $zz = @::legal_severity;
    $zz = @::settable_resolution;
    $zz = @::target_milestone;
    $zz = $::unconfirmedstate;
    $zz = $::userid;
    $zz = @::versions;
};

ConnectToDatabase();

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

# 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 $format = ValidateOutputFormat($::FORM{'format'}, "list");

# Whether or not the user wants to change multiple bugs.
my $dotweak = $::FORM{'tweak'} ? 1 : 0;

# 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.
#
my $serverpush =
  exists $ENV{'HTTP_USER_AGENT'} 
    && $ENV{'HTTP_USER_AGENT'} =~ /Mozilla.[3-9]/ 
      && $ENV{'HTTP_USER_AGENT'} !~ /[Cc]ompatible/
        && $format->{'extension'} eq "html"
          && !defined($::FORM{'serverpush'})
            || $::FORM{'serverpush'};

my $order = $::FORM{'order'} || "";
my $order_from_cookie = 0;  # True if $order set using $::COOKIE{'LASTORDER'}

# 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 ($::FORM{'regetlastlist'}) {
    if (!$::COOKIE{'BUGLIST'}) {
        DisplayError(qq|Sorry, I seem to have lost the cookie that recorded
                        the results of your last query.  You will have to start
                        over at the <a href="query.cgi">query page</a>.|);
        exit;
    }
    $::FORM{'bug_id'} = join(",", split(/:/, $::COOKIE{'BUGLIST'}));
    $order = "reuse last sort" unless $order;
    $::buffer = "bug_id=$::FORM{'bug_id'}&order=" . url_quote($order);
}

if ($::buffer =~ /&cmd-/) {
    my $url = "query.cgi?$::buffer#chart";
    print "Refresh: 0; URL=$url\n";
    print "Content-Type: text/html\n\n";
    # Generate and return the UI (HTML page) from the appropriate template.
    $vars->{'title'} = "Adding field to query page...";
    $vars->{'url'} = $url;
    $vars->{'link'} = "Click here if the page does not redisplay automatically.";
    $template->process("global/message.html.tmpl", $vars)
      || ThrowTemplateError($template->error());
    exit;
}

# 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}";
$::FORM{'cmdtype'} ||= "";
if ($::FORM{'cmdtype'} eq 'runnamed') {
    $filename = "$::FORM{'namedcmd'}-$date.$format->{extension}";
    # Remove white-space from the filename so the user cannot tamper
    # with the HTTP headers.
    $filename =~ s/\s//;
}

if ($dotweak) {
    confirm_login();
    if (!UserInGroup("editbugs")) {
        DisplayError("Sorry, you do not have sufficient privileges to edit
                      multiple bugs.");
        exit;
    }
    GetVersionTable();
}
else {
    quietly_check_login();
}


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

sub SqlifyDate {
    my ($str) = @_;
    $str = "" if !defined $str;
    my $date = str2time($str);
    if (!defined($date)) {
        my $htmlstr = html_quote($str);
        DisplayError("The string <tt>$htmlstr</tt> is not a legal date.");
        exit;
    }
    return time2str("%Y-%m-%d %H:%M:%S", $date);
}

my @weekday= qw( Sun Mon Tue Wed Thu Fri Sat );
sub DiffDate {
    my ($datestr) = @_;
    my $date = str2time($datestr);
    my $age = time() - $date;
    my ($s,$m,$h,$d,$mo,$y,$wd)= localtime $date;
    if( $age < 18*60*60 ) {
        $date = sprintf "%02d:%02d:%02d", $h,$m,$s;
    } elsif( $age < 6*24*60*60 ) {
        $date = sprintf "%s %02d:%02d", $weekday[$wd],$h,$m;
    } else {
        $date = sprintf "%04d-%02d-%02d", 1900+$y,$mo+1,$d;
    }
    return $date;
}

sub GetByWordList {
    my ($field, $strs) = (@_);
    my @list;

    foreach my $w (split(/[\s,]+/, $strs)) {
        my $word = $w;
        if ($word ne "") {
            $word =~ tr/A-Z/a-z/;
            $word = SqlQuote(quotemeta($word));
            $word =~ s/^'//;
            $word =~ s/'$//;
            $word = '(^|[^a-z0-9])' . $word . '($|[^a-z0-9])';
            push(@list, "lower($field) regexp '$word'");
        }
    }

    return \@list;
}

#
# support for "any/all/nowordssubstr" comparison type ("words as substrings")
#
sub GetByWordListSubstr {
    my ($field, $strs) = (@_);
    my @list;

    foreach my $word (split(/[\s,]+/, $strs)) {
        if ($word ne "") {
            push(@list, "INSTR(LOWER($field), " . lc(SqlQuote($word)) . ")");
        }
    }

    return \@list;
}

sub LookupNamedQuery {
    my ($name) = @_;
    confirm_login();
    my $userid = DBNameToIdAndCheck($::COOKIE{"Bugzilla_login"});
    my $qname = SqlQuote($name);
    SendSQL("SELECT query FROM namedqueries WHERE userid = $userid AND name = $qname");
    my $result = FetchOneColumn();
    if (!$result) {
        my $qname = html_quote($name);
        DisplayError("The query named <em>$qname</em> seems to no longer exist.");
        exit;
    }
    return $result;
}

sub GetQuip {
    return if !Param('usequip');

    my $quip;

    # This is stupid.  We really really need to move the quip list into the DB!
    if (open(COMMENTS, "<data/comments")) {
        my @cdata;
        push(@cdata, $_) while <COMMENTS>;
        close COMMENTS;
        $quip = $cdata[int(rand($#cdata + 1))];
    }
    $quip ||= "Bugzilla would like to put a random quip here, but nobody has entered any.";

    return $quip;
}

sub GetGroupsByGroupSet {
    my ($groupset) = @_;

    return if !$groupset;

    SendSQL("
        SELECT  bit, name, description, isactive
          FROM  groups
         WHERE  (bit & $groupset) != 0
           AND  isbuggroup != 0
      ORDER BY  description ");

    my @groups;

    while (MoreSQLData()) {
        my $group = {};
        ($group->{'bit'}, $group->{'name'},
         $group->{'description'}, $group->{'isactive'}) = FetchSQLData();
        push(@groups, $group);
    }

    return \@groups;
}



################################################################################
# Query Generation
################################################################################

sub GenerateSQL {
    my $debug = 0;
    my ($fieldsref, $urlstr) = (@_);
    my @fields;
    my @supptables;
    my @wherepart;
    @fields = @$fieldsref if $fieldsref;
    my %F;
    my %M;
    ParseUrlString($urlstr, \%F, \%M);
    my @specialchart;
    my @andlist;

    # First, deal with all the old hard-coded non-chart-based poop.

    unshift(@supptables,
            ("profiles map_assigned_to",
             "profiles map_reporter",
             "LEFT JOIN profiles map_qa_contact ON bugs.qa_contact = map_qa_contact.userid"));
    unshift(@wherepart,
            ("bugs.assigned_to = map_assigned_to.userid",
             "bugs.reporter = map_reporter.userid"));

    my $minvotes;
    if (defined $F{'votes'}) {
        my $c = trim($F{'votes'});
        if ($c ne "") {
            if ($c !~ /^[0-9]*$/) {
                my $htmlc = html_quote($c);
                DisplayError("The <em>At least ___ votes</em> field must be
                              a simple number.  You entered <kbd>$htmlc</kbd>,
                              which doesn't cut it.");
                exit;
            }
            push(@specialchart, ["votes", "greaterthan", $c - 1]);
        }
    }

    if ($M{'bug_id'}) {
        my $type = "anyexact";
        if ($F{'bugidtype'} && $F{'bugidtype'} eq 'exclude') {
            $type = "nowords";
        }
        push(@specialchart, ["bug_id", $type, join(',', @{$M{'bug_id'}})]);
    }

# This is evil.  We should never allow a user to directly append SQL to
# any query without a huge amount of validation.  Even then, it would
# be a bad idea.  Beware that uncommenting this will allow someone to
# peak at virtually anything they want in the bugs database.
#    if (defined $F{'sql'}) {
#        die "Invalid sql: $F{'sql'}" if $F{'sql'} =~ /;/;
#        push(@wherepart, "( $F{'sql'} )");
#    }

    my @legal_fields = ("product", "version", "rep_platform", "op_sys",
                        "bug_status", "resolution", "priority", "bug_severity",
                        "assigned_to", "reporter", "component",
                        "target_milestone", "groupset");

    foreach my $field (keys %F) {
        if (lsearch(\@legal_fields, $field) != -1) {
            push(@specialchart, [$field, "anyexact",
                                 join(',', @{$M{$field}})]);
        }
    }

    if ($F{'keywords'}) {
        my $t = $F{'keywords_type'};
        if (!$t || $t eq "or") {
            $t = "anywords";
        }
        push(@specialchart, ["keywords", $t, $F{'keywords'}]);
    }

    foreach my $id ("1", "2") {
        if (!defined ($F{"email$id"})) {
            next;
        }
        my $email = trim($F{"email$id"});
        if ($email eq "") {
            next;
        }
        my $type = $F{"emailtype$id"};
        if ($type eq "exact") {
            $type = "anyexact";
            foreach my $name (split(',', $email)) {
                $name = trim($name);
                if ($name) {
                    DBNameToIdAndCheck($name);
                }
            }
        }

        my @clist;
        foreach my $field ("assigned_to", "reporter", "cc", "qa_contact") {
            if ($F{"email$field$id"}) {
                push(@clist, $field, $type, $email);
            }
        }
        if ($F{"emaillongdesc$id"}) {
            my $table = "longdescs_";
            push(@supptables, "longdescs $table");
            push(@wherepart, "$table.bug_id = bugs.bug_id");
            my $ptable = "longdescnames_";
            push(@supptables, "profiles $ptable");
            push(@wherepart, "$table.who = $ptable.userid");
            push(@clist, "$ptable.login_name", $type, $email);
        }
        if (@clist) {
            push(@specialchart, \@clist);
        } else {
            my $htmlemail = html_quote($email);
            DisplayError("You must specify one or more fields in which
                          to search for <tt>$htmlemail</tt>.");
            exit;
        }
    }


    if (defined $F{'changedin'}) {
        my $c = trim($F{'changedin'});
        if ($c ne "") {
            if ($c !~ /^[0-9]*$/) {
                my $htmlc = html_quote($c);
                DisplayError("The <em>changed in last ___ days</em> field
                              must be a simple number.  You entered
                              <kbd>$htmlc</kbd>, which doesn't cut it.");
                exit;
            }
            push(@specialchart, ["changedin",
                                 "lessthan", $c + 1]);
        }
    }

    my $ref = $M{'chfield'};

    if (defined $ref) {
        my $which = lsearch($ref, "[Bug creation]");
        if ($which >= 0) {
            splice(@$ref, $which, 1);
            push(@specialchart, ["creation_ts", "greaterthan",
                                 SqlifyDate($F{'chfieldfrom'})]);
            my $to = $F{'chfieldto'};
            if (defined $to) {
                $to = trim($to);
                if ($to ne "" && $to !~ /^now$/i) {
                    push(@specialchart, ["creation_ts", "lessthan",
                                         SqlifyDate($to)]);
                }
            }
        }
    }



    if (defined $ref && 0 < @$ref) {
        push(@supptables, "bugs_activity actcheck");

        my @list;
        foreach my $f (@$ref) {
            push(@list, "\nactcheck.fieldid = " . GetFieldID($f));
        }
        push(@wherepart, "actcheck.bug_id = bugs.bug_id");
        push(@wherepart, "(" . join(' OR ', @list) . ")");
        push(@wherepart, "actcheck.bug_when >= " .
             SqlQuote(SqlifyDate($F{'chfieldfrom'})));
        my $to = $F{'chfieldto'};
        if (defined $to) {
            $to = trim($to);
            if ($to ne "" && $to !~ /^now$/i) {
                push(@wherepart, "actcheck.bug_when <= " .
                     SqlQuote(SqlifyDate($to)));
            }
        }
        my $value = $F{'chfieldvalue'};
        if (defined $value) {
            $value = trim($value);
            if ($value ne "") {
                push(@wherepart, "actcheck.added = " .
                     SqlQuote($value))
            }
        }
    }


    foreach my $f ("short_desc", "long_desc", "bug_file_loc",
                   "status_whiteboard") {
        if (defined $F{$f}) {
            my $s = trim($F{$f});
            if ($s ne "") {
                my $n = $f;
                my $q = SqlQuote($s);
                my $type = $F{$f . "_type"};
                push(@specialchart, [$f, $type, $s]);
            }
        }
    }

    my $chartid;
    # $statusid is used by the code that queries for attachment statuses.
    my $statusid = 0;
    my $f;
    my $ff;
    my $t;
    my $q;
    my $v;
    my $term;
    my %funcsbykey;
    my @funcdefs =
        (
         "^(assigned_to|reporter)," => sub {
             push(@supptables, "profiles map_$f");
             push(@wherepart, "bugs.$f = map_$f.userid");
             $f = "map_$f.login_name";
         },
         "^qa_contact," => sub {
             push(@supptables,
                  "LEFT JOIN profiles map_qa_contact ON bugs.qa_contact = map_qa_contact.userid");
             $f = "map_$f.login_name";
         },

         "^cc," => sub {
            push(@supptables, "LEFT JOIN cc cc_$chartid ON bugs.bug_id = cc_$chartid.bug_id");

            push(@supptables, "LEFT JOIN profiles map_cc_$chartid ON cc_$chartid.who = map_cc_$chartid.userid");
            $f = "map_cc_$chartid.login_name";
         },

         "^long_?desc,changedby" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "longdescs $table");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             my $id = DBNameToIdAndCheck($v);
             $term = "$table.who = $id";
         },
         "^long_?desc,changedbefore" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "longdescs $table");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             $term = "$table.bug_when < " . SqlQuote(SqlifyDate($v));
         },
         "^long_?desc,changedafter" => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "longdescs $table");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             $term = "$table.bug_when > " . SqlQuote(SqlifyDate($v));
         },
         "^long_?desc," => sub {
             my $table = "longdescs_$chartid";
             push(@supptables, "longdescs $table");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             $f = "$table.thetext";
         },
         "^attachments\..*," => sub {
             my $table = "attachments_$chartid";
             push(@supptables, "attachments $table");
             push(@wherepart, "bugs.bug_id = $table.bug_id");
             $f =~ m/^attachments\.(.*)$/;
             my $field = $1;
             if ($t eq "changedby") {
                 $v = DBNameToIdAndCheck($v);
                 $q = SqlQuote($v);
                 $field = "submitter_id";
                 $t = "equals";
             } elsif ($t eq "changedbefore") {
                 $v = SqlifyDate($v);
                 $q = SqlQuote($v);
                 $field = "creation_ts";
                 $t = "lessthan";
             } elsif ($t eq "changedafter") {
                 $v = SqlifyDate($v);
                 $q = SqlQuote($v);
                 $field = "creation_ts";
                 $t = "greaterthan";
             }
             if ($field eq "ispatch" && $v ne "0" && $v ne "1") {
                 DisplayError("The only legal values for the <em>Attachment is
                               patch</em> field are 0 and 1.");
                 exit;
             }
             if ($field eq "isobsolete" && $v ne "0" && $v ne "1") {
                 DisplayError("The only legal values for the <em>Attachment is
                               obsolete</em> field are 0 and 1.");
                 exit;
             }
             $f = "$table.$field";
         },
         "^attachstatusdefs.name," => sub {
             # The below has Fun with the names for attachment statuses. This
             # isn't needed for changed* queries, so exclude those - the
             # generic stuff will cope
             return if ($t =~ m/^changed/);

             # Searching for "status != 'bar'" wants us to look for an
             # attachment without the 'bar' status, not for an attachment with
             # a status not equal to 'bar' (Which would pick up an attachment
             # with more than one status). We do this by LEFT JOINS, after
             # grabbing the matching attachment status ids.
             # Note that this still won't find bugs with no attachments, since
             # that isn't really what people would expect.

             # First, get the attachment status ids, using the other funcs
             # to match the WHERE term.
             # Note that we need to reverse the negated bits for this to work
             # This somewhat abuses the definitions of the various terms -
             # eg, does 'contains all' mean that the status has to contain all
             # those words, or that all those words must be exact matches to
             # statuses, which must all be on a single attachment, or should
             # the match on the status descriptions be a contains match, too?

             my $inverted = 0;
             if ($t =~ m/not(.*)/) {
                 $t = $1;
                 $inverted = 1;
             }

             $ref = $funcsbykey{",$t"};
             &$ref;
             SendSQL("SELECT id FROM attachstatusdefs WHERE $term");

             my @as_ids;
             while (MoreSQLData()) {
                 push @as_ids, FetchOneColumn();
             }

             # When searching for multiple statuses within a single boolean chart,
             # we want to match each status record separately.  In other words,
             # "status = 'foo' AND status = 'bar'" should match attachments with
             # one status record equal to "foo" and another one equal to "bar",
             # not attachments where the same status record equals both "foo" and
             # "bar" (which is nonsensical).  In order to do this we must add an
             # additional counter to the end of the "attachstatuses" table
             # reference.
             ++$statusid;

             my $attachtable = "attachments_$chartid";
             my $statustable = "attachstatuses_${chartid}_$statusid";

             push(@supptables, "attachments $attachtable");
             my $join = "LEFT JOIN attachstatuses $statustable ON ".
               "($attachtable.attach_id = $statustable.attach_id AND " .
                "$statustable.statusid IN (" . join(",", @as_ids) . "))";
             push(@supptables, $join);
             push(@wherepart, "bugs.bug_id = $attachtable.bug_id");
             if ($inverted) {
                 $term = "$statustable.statusid IS NULL";
             } else {
                 $term = "$statustable.statusid IS NOT NULL";
             }
         },
         "^changedin," => sub {
             $f = "(to_days(now()) - to_days(bugs.delta_ts))";
         },

         "^keywords," => sub {
             GetVersionTable();
             my @list;
             my $table = "keywords_$chartid";
             foreach my $value (split(/[\s,]+/, $v)) {
                 if ($value eq '') {
                     next;
                 }
                 my $id = GetKeywordIdFromName($value);
                 if ($id) {
                     push(@list, "$table.keywordid = $id");
                 }
                 else {
                     my $htmlv = html_quote($v);
                     DisplayError(qq|There is no keyword named <code>$htmlv</code>.
                                     To search for keywords, consult the
                                    <a href="describekeywords.cgi">list of legal keywords</a>.|);
                     exit;
                 }
             }
             my $haveawordterm;
             if (@list) {
                 $haveawordterm = "(" . join(' OR ', @list) . ")";
                 if ($t eq "anywords") {
                     $term = $haveawordterm;
                 } elsif ($t eq "allwords") {
                     $ref = $funcsbykey{",$t"};
                     &$ref;
                     if ($term && $haveawordterm) {
                         $term = "(($term) AND $haveawordterm)";
                     }
                 }
             }
             if ($term) {
                 push(@supptables, "keywords $table");
                 push(@wherepart, "$table.bug_id = bugs.bug_id");
             }
         },

         "^dependson," => sub {
                my $table = "dependson_" . $chartid;
                push(@supptables, "dependencies $table");
                $ff = "$table.$f";
                $ref = $funcsbykey{",$t"};
                &$ref;
                push(@wherepart, "$table.blocked = bugs.bug_id");
         },

         "^blocked," => sub {
                my $table = "blocked_" . $chartid;
                push(@supptables, "dependencies $table");
                $ff = "$table.$f";
                $ref = $funcsbykey{",$t"};
                &$ref;
                push(@wherepart, "$table.dependson = bugs.bug_id");
         },


         ",equals" => sub {
             $term = "$ff = $q";
         },
         ",notequals" => sub {
             $term = "$ff != $q";
         },
         ",casesubstring" => sub {
             $term = "INSTR($ff, $q)";
         },
         ",(substring|substr)" => sub {
             $term = "INSTR(LOWER($ff), " . lc($q) . ")";
         },
         ",notsubstring" => sub {
             $term = "INSTR(LOWER($ff), " . lc($q) . ") = 0";
         },
         ",regexp" => sub {
             $term = "LOWER($ff) REGEXP $q";
         },
         ",notregexp" => sub {
             $term = "LOWER($ff) NOT REGEXP $q";
         },
         ",lessthan" => sub {
             $term = "$ff < $q";
         },
         ",greaterthan" => sub {
             $term = "$ff > $q";
         },
         ",anyexact" => sub {
             my @list;
             foreach my $w (split(/,/, $v)) {
                 if ($w eq "---" && $f !~ /milestone/) {
                     $w = "";
                 }
                 push(@list, "$ff = " . SqlQuote($w));
             }
             $term = join(" OR ", @list);
         },
         ",anywordssubstr" => sub {
             $term = join(" OR ", @{GetByWordListSubstr($ff, $v)});
         },
         ",allwordssubstr" => sub {
             $term = join(" AND ", @{GetByWordListSubstr($ff, $v)});
         },
         ",nowordssubstr" => sub {
             my @list = @{GetByWordListSubstr($ff, $v)};
             if (@list) {
                 $term = "NOT (" . join(" OR ", @list) . ")";
             }
         },
         ",anywords" => sub {
             $term = join(" OR ", @{GetByWordList($ff, $v)});
         },
         ",allwords" => sub {
             $term = join(" AND ", @{GetByWordList($ff, $v)});
         },
         ",nowords" => sub {
             my @list = @{GetByWordList($ff, $v)};
             if (@list) {
                 $term = "NOT (" . join(" OR ", @list) . ")";
             }
         },
         ",changedbefore" => sub {
             my $table = "act_$chartid";
             my $ftable = "fielddefs_$chartid";
             push(@supptables, "bugs_activity $table");
             push(@supptables, "fielddefs $ftable");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             push(@wherepart, "$table.fieldid = $ftable.fieldid");
             $term = "($ftable.name = '$f' AND $table.bug_when < $q)";
         },
         ",changedafter" => sub {
             my $table = "act_$chartid";
             my $ftable = "fielddefs_$chartid";
             push(@supptables, "bugs_activity $table");
             push(@supptables, "fielddefs $ftable");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             push(@wherepart, "$table.fieldid = $ftable.fieldid");
             $term = "($ftable.name = '$f' AND $table.bug_when > $q)";
         },
         ",changedfrom" => sub {
             my $table = "act_$chartid";
             my $ftable = "fielddefs_$chartid";
             push(@supptables, "bugs_activity $table");
             push(@supptables, "fielddefs $ftable");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             push(@wherepart, "$table.fieldid = $ftable.fieldid");
             $term = "($ftable.name = '$f' AND $table.removed = $q)";
         },
         ",changedto" => sub {
             my $table = "act_$chartid";
             my $ftable = "fielddefs_$chartid";
             push(@supptables, "bugs_activity $table");
             push(@supptables, "fielddefs $ftable");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             push(@wherepart, "$table.fieldid = $ftable.fieldid");
             $term = "($ftable.name = '$f' AND $table.added = $q)";
         },
         ",changedby" => sub {
             my $table = "act_$chartid";
             my $ftable = "fielddefs_$chartid";
             push(@supptables, "bugs_activity $table");
             push(@supptables, "fielddefs $ftable");
             push(@wherepart, "$table.bug_id = bugs.bug_id");
             push(@wherepart, "$table.fieldid = $ftable.fieldid");
             my $id = DBNameToIdAndCheck($v);
             $term = "($ftable.name = '$f' AND $table.who = $id)";
         },
         );
    my @funcnames;
    while (@funcdefs) {
        my $key = shift(@funcdefs);
        my $value = shift(@funcdefs);
        if ($key =~ /^[^,]*$/) {
            die "All defs in %funcs must have a comma in their name: $key";
        }
        if (exists $funcsbykey{$key}) {
            die "Duplicate key in %funcs: $key";
        }
        $funcsbykey{$key} = $value;
        push(@funcnames, $key);
    }

    # first we delete any sign of "Chart #-1" from the HTML form hash
    # since we want to guarantee the user didn't hide something here
    my @badcharts = grep /^(field|type|value)-1-/, (keys %F);
    foreach my $field (@badcharts) {
        delete $F{$field};
    }

    # now we take our special chart and stuff it into the form hash
    my $chart = -1;
    my $row = 0;
    foreach my $ref (@specialchart) {
        my $col = 0;
        while (@$ref) {
            $F{"field$chart-$row-$col"} = shift(@$ref);
            $F{"type$chart-$row-$col"} = shift(@$ref);
            $F{"value$chart-$row-$col"} = shift(@$ref);
            if ($debug) {
                print qq{<P>$F{"field$chart-$row-$col"} | $F{"type$chart-$row-$col"} | $F{"value$chart-$row-$col"}*\n};
            }
            $col++;

        }
        $row++;
    }


# A boolean chart is a way of representing the terms in a logical
# expression.  Bugzilla builds SQL queries depending on how you enter
# terms into the boolean chart. Boolean charts are represented in
# urls as tree-tuples of (chart id, row, column). The query form
# (query.cgi) may contain an arbitrary number of boolean charts where
# each chart represents a clause in a SQL query.
#
# The query form starts out with one boolean chart containing one
# row and one column.  Extra rows can be created by pressing the
# AND button at the bottom of the chart.  Extra columns are created
# by pressing the OR button at the right end of the chart. Extra
# charts are created by pressing "Add another boolean chart".
#
# Each chart consists of an artibrary number of rows and columns.
# The terms within a row are ORed together. The expressions represented
# by each row are ANDed together. The expressions represented by each
# chart are ANDed together.
#
#        ----------------------
#        | col2 | col2 | col3 |
# --------------|------|------|
# | row1 |  a1  |  a2  |      |
# |------|------|------|------|  => ((a1 OR a2) AND (b1 OR b2 OR b3) AND (c1))
# | row2 |  b1  |  b2  |  b3  |
# |------|------|------|------|
# | row3 |  c1  |      |      |
# -----------------------------
#
#        --------
#        | col2 |
# --------------|
# | row1 |  d1  | => (d1)
# ---------------
#
# Together, these two charts represent a SQL expression like this
# SELECT blah FROM blah WHERE ( (a1 OR a2)AND(b1 OR b2 OR b3)AND(c1)) AND (d1)
#
# The terms within a single row of a boolean chart are all constraints
# on a single piece of data.  If you're looking for a bug that has two
# different people cc'd on it, then you need to use two boolean charts.
# This will find bugs with one CC mathing 'foo@blah.org' and and another
# CC matching 'bar@blah.org'.
#
# --------------------------------------------------------------
# CC    | equal to
# foo@blah.org
# --------------------------------------------------------------
# CC    | equal to
# bar@blah.org
#
# If you try to do this query by pressing the AND button in the
# original boolean chart then what you'll get is an expression that
# looks for a single CC where the login name is both "foo@blah.org",
# and "bar@blah.org". This is impossible.
#
# --------------------------------------------------------------
# CC    | equal to
# foo@blah.org
# AND
# CC    | equal to
# bar@blah.org
# --------------------------------------------------------------

# $chartid is the number of the current chart whose SQL we're contructing
# $row is the current row of the current chart

# names for table aliases are constructed using $chartid and $row
#   SELECT blah  FROM $table "$table_$chartid_$row" WHERE ....

# $f  = field of table in bug db (e.g. bug_id, reporter, etc)
# $ff = qualified field name (field name prefixed by table)
#       e.g. bugs_activity.bug_id
# $t  = type of query. e.g. "equal to", "changed after", case sensitive substr"
# $v  = value - value the user typed in to the form
# $q  = sanitized version of user input (SqlQuote($v))
# @supptables = Tables and/or table aliases used in query
# %suppseen   = A hash used to store all the tables in supptables to weed
#               out duplicates.
# $suppstring = String which is pasted into query containing all table names

    # get a list of field names to verify the user-submitted chart fields against
    my %chartfields;
    SendSQL("SELECT name FROM fielddefs");
    while (MoreSQLData()) {
        my ($name) = FetchSQLData();
        $chartfields{$name} = 1;
    }

    $row = 0;
    for ($chart=-1 ;
         $chart < 0 || exists $F{"field$chart-0-0"} ;
         $chart++) {
        $chartid = $chart >= 0 ? $chart : "";
        for ($row = 0 ;
             exists $F{"field$chart-$row-0"} ;
             $row++) {
            my @orlist;
            for (my $col = 0 ;
                 exists $F{"field$chart-$row-$col"} ;
                 $col++) {
                $f = $F{"field$chart-$row-$col"} || "noop";
                $t = $F{"type$chart-$row-$col"} || "noop";
                $v = $F{"value$chart-$row-$col"};
                $v = "" if !defined $v;
                $v = trim($v);
                if ($f eq "noop" || $t eq "noop" || $v eq "") {
                    next;
                }
                # chart -1 is generated by other code above, not from the user-
                # submitted form, so we'll blindly accept any values in chart -1
                if ((!$chartfields{$f}) && ($chart != -1)) {
                    my $errstr = "Can't use " . html_quote($f) . " as a field name.  " .
                        "If you think you're getting this in error, please copy the " .
                        "entire URL out of the address bar at the top of your browser " .
                        "window and email it to <109679\@bugzilla.org>";
                    die "Internal error: $errstr" if $chart < 0;
                    return Error($errstr);
                }

                # This is either from the internal chart (in which case we
                # already know about it), or it was in %chartfields, so it is
                # a valid field name, which means that its ok.
                trick_taint($f);
                $q = SqlQuote($v);
                my $func;
                $term = undef;
                foreach my $key (@funcnames) {
                    if ("$f,$t" =~ m/$key/) {
                        my $ref = $funcsbykey{$key};
                        if ($debug) {
                            print "<P>$key ($f , $t ) => ";
                        }
                        $ff = $f;
                        if ($f !~ /\./) {
                            $ff = "bugs.$f";
                        }
                        &$ref;
                        if ($debug) {
                            print "$f , $t , $term";
                        }
                        if ($term) {
                            last;
                        }
                    }
                }
                if ($term) {
                    push(@orlist, $term);
                }
                else {
                    my $errstr =
                      qq|Cannot seem to handle <code>$F{"field$chart-$row-$col"}</code>
                         and <code>$F{"type$chart-$row-$col"}</code> together|;
                    $chart < 0 ? die "Internal error: $errstr"
                               : DisplayError($errstr) && exit;
                }
            }
            if (@orlist) {
                push(@andlist, "(" . join(" OR ", @orlist) . ")");
            }
        }
    }
    my %suppseen = ("bugs" => 1);
    my $suppstring = "bugs";
    foreach my $str (@supptables) {
        if (!$suppseen{$str}) {
            if ($str !~ /^(LEFT|INNER) JOIN/i) {
                $suppstring .= ",";
            }
            $suppstring .= " $str";
            $suppseen{$str} = 1;
        }
    }
    my $query =  ("SELECT DISTINCT " . join(', ', @fields) .
                  " FROM $suppstring" .
                  " WHERE " . join(' AND ', (@wherepart, @andlist)));

    $query = SelectVisible($query, $::userid, $::usergroupset);

    if ($debug) {
        print "<P><CODE>" . value_quote($query) . "</CODE><P>\n";
        exit;
    }
    return $query;
}



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

# Figure out if the user wanted to do anything besides just running the query
# they defined on the query page, and take appropriate action.
CMD: for ($::FORM{'cmdtype'}) {
    /^runnamed$/ && do {
        $::buffer = LookupNamedQuery($::FORM{"namedcmd"});
        $vars->{'title'} = "Bug List: $::FORM{'namedcmd'}";
        ProcessFormFields($::buffer);
        $order = $::FORM{'order'} || $order;
        last CMD;
    };

    /^editnamed$/ && do {
        my $url = "query.cgi?" . LookupNamedQuery($::FORM{"namedcmd"});
        print "Refresh: 0; URL=$url\n";
        print "Content-Type: text/html\n\n";
        # Generate and return the UI (HTML page) from the appropriate template.
        $vars->{'title'} = "Loading your query named $::FORM{'namedcmd'}";
        $vars->{'url'} = $url;
        $vars->{'link'} = "Click here if the page does not redisplay automatically.";
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    };

    /^forgetnamed$/ && do {
        confirm_login();
        my $userid = DBNameToIdAndCheck($::COOKIE{"Bugzilla_login"});
        my $qname = SqlQuote($::FORM{'namedcmd'});
        SendSQL("DELETE FROM namedqueries WHERE userid = $userid AND name = $qname");
        print "Content-Type: text/html\n\n";
        # Generate and return the UI (HTML page) from the appropriate template.
        $vars->{'title'} = "Query is gone";
        $vars->{'message'} = "OK, the <b>$::FORM{'namedcmd'}</b> query is gone.";
        $vars->{'url'} = "query.cgi";
        $vars->{'link'} = "Go back to the query page.";
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    };

    /^asdefault$/ && do {
        confirm_login();
        my $userid = DBNameToIdAndCheck($::COOKIE{"Bugzilla_login"});
        my $qname = SqlQuote($::defaultqueryname);
        my $qbuffer = SqlQuote($::buffer);
        SendSQL("REPLACE INTO namedqueries (userid, name, query)
                 VALUES ($userid, $qname, $qbuffer)");
        print "Content-Type: text/html\n\n";
        # Generate and return the UI (HTML page) from the appropriate template.
        $vars->{'title'} = "OK, default is set";
        $vars->{'message'} = "OK, you now have a new default query.  You may
                              also bookmark the result of any individual query.";
        $vars->{'url'} = "query.cgi";
        $vars->{'link'} = "Go back to the query page, using the new default.";
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    };

    /^asnamed$/ && do {
        confirm_login();
        my $userid = DBNameToIdAndCheck($::COOKIE{"Bugzilla_login"});

        my $name = trim($::FORM{'newqueryname'});
        $name
          || DisplayError("You must enter a name for your query.")
            && exit;
        $name =~ /[<>&]/
          && DisplayError("The name of your query cannot contain any
                           of the following characters: &lt;, &gt;, &amp;.")
            && exit;
        my $qname = SqlQuote($name);

        $::buffer =~ s/[\&\?]cmdtype=[a-z]+//;
        my $qbuffer = SqlQuote($::buffer);

        my $tofooter= $::FORM{'tofooter'} ? 1 : 0;

        SendSQL("SELECT query FROM namedqueries WHERE userid = $userid AND name = $qname");
        if (FetchOneColumn()) {
            SendSQL("UPDATE  namedqueries
                        SET  query = $qbuffer , linkinfooter = $tofooter
                      WHERE  userid = $userid AND name = $qname");
        }
        else {
            SendSQL("REPLACE INTO namedqueries (userid, name, query, linkinfooter)
                     VALUES ($userid, $qname, $qbuffer, $tofooter)");
        }
        
        my $new_in_footer = $tofooter;
        
        # Don't add it to the list if they are reusing an existing query name.
        foreach my $query (@{$vars->{'user'}{'queries'}}) {
            if ($query->{'name'} eq $name && $query->{'linkinfooter'} == 1) {
                $new_in_footer = 0;
            }
        }        
        
        print "Content-Type: text/html\n\n";
        # Generate and return the UI (HTML page) from the appropriate template.        
        if ($new_in_footer) {
            my %query = (name => $name,
                         query => $::buffer, 
                         linkinfooter => $tofooter);
            push(@{$vars->{'user'}{'queries'}}, \%query);
        }
        
        $vars->{'title'} = "OK, query saved.";
        $vars->{'message'} = "OK, you have a new query named <code>$name</code>";
        $vars->{'url'} = "query.cgi";
        $vars->{'link'} = "Go back to the query page.";
        $template->process("global/message.html.tmpl", $vars)
          || ThrowTemplateError($template->error());
        exit;
    };
}


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

# Define the columns that can be selected in a query and/or displayed in a bug
# list.  Column records include the following fields:
#
# 1. ID: a unique identifier by which the column is referred in code;
#
# 2. Name: The name of the column in the database (may also be an expression
#          that returns the value of the column);
#
# 3. Title: The title of the column as displayed to users.
# 
# Note: There are a few hacks in the code that deviate from these definitions.
#       In particular, when the list is sorted by the "votes" field the word 
#       "DESC" is added to the end of the field to sort in descending order, 
#       and the redundant summaryfull column is removed when the client
#       requests "all" columns.

my $columns = {};
sub DefineColumn {
    my ($id, $name, $title) = @_;
    $columns->{$id} = { 'name' => $name , 'title' => $title };
}

# Column:     ID                    Name                           Title
DefineColumn("id"                , "bugs.bug_id"                , "ID"               );
DefineColumn("groupset"          , "bugs.groupset"              , "Groupset"         );
DefineColumn("opendate"          , "bugs.creation_ts"           , "Opened"           );
DefineColumn("changeddate"       , "bugs.delta_ts"              , "Changed"          );
DefineColumn("severity"          , "bugs.bug_severity"          , "Severity"         );
DefineColumn("priority"          , "bugs.priority"              , "Priority"         );
DefineColumn("platform"          , "bugs.rep_platform"          , "Platform"         );
DefineColumn("owner"             , "map_assigned_to.login_name" , "Owner"            );
DefineColumn("reporter"          , "map_reporter.login_name"    , "Reporter"         );
DefineColumn("qa_contact"        , "map_qa_contact.login_name"  , "QA Contact"       );
DefineColumn("status"            , "bugs.bug_status"            , "State"            );
DefineColumn("resolution"        , "bugs.resolution"            , "Result"           );
DefineColumn("summary"           , "bugs.short_desc"            , "Summary"          );
DefineColumn("summaryfull"       , "bugs.short_desc"            , "Summary"          );
DefineColumn("status_whiteboard" , "bugs.status_whiteboard"     , "Status Summary"   );
DefineColumn("component"         , "bugs.component"             , "Component"        );
DefineColumn("product"           , "bugs.product"               , "Product"          );
DefineColumn("version"           , "bugs.version"               , "Version"          );
DefineColumn("os"                , "bugs.op_sys"                , "OS"               );
DefineColumn("target_milestone"  , "bugs.target_milestone"      , "Target Milestone" );
DefineColumn("votes"             , "bugs.votes"                 , "Votes"            );
DefineColumn("keywords"          , "bugs.keywords"              , "Keywords"         );


################################################################################
# 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 $::FORM{'columnlist'}) {
    if ($::FORM{'columnlist'} eq "all") {
        # If the value of the CGI parameter is "all", display all columns,
        # but remove the redundant "summaryfull" column.
        @displaycolumns = grep($_ ne 'summaryfull', keys(%$columns));
    }
    else {
        @displaycolumns = split(/[ ,]+/, $::FORM{'columnlist'});
    }
}
elsif (defined $::COOKIE{'COLUMNLIST'}) {
    # Use the columns listed in the user's preferences.
    @displaycolumns = split(/ /, $::COOKIE{'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 'id', @displaycolumns);

# IMPORTANT! Never allow the groupset column to be displayed!
@displaycolumns = grep($_ ne 'groupset', @displaycolumns);

# Add the votes column to the list of columns to be displayed
# in the bug list if the user is searching for bugs with a certain
# number of votes and the votes column is not already on the list.

# Some versions of perl will taint 'votes' if this is done as a single
# statement, because $::FORM{'votes'} is tainted at this point
$::FORM{'votes'} ||= "";
if (trim($::FORM{'votes'}) && !grep($_ eq 'votes', @displaycolumns)) {
    push(@displaycolumns, 'votes');
}


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

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

# The bug ID and groupset are always selected because bug IDs are always
# displayed and we need the groupset to determine whether or not the bug
# is visible to the user.
my @selectcolumns = ("id", "groupset");

# Display columns are selected because otherwise we could not display them.
push (@selectcolumns, @displaycolumns);

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


################################################################################
# Query Generation
################################################################################

# Convert the list of columns being selected into a list of column names.
my @selectnames = map($columns->{$_}->{'name'}, @selectcolumns);

# Generate the basic SQL query that will be used to generate the bug list.
my $query = GenerateSQL(\@selectnames, $::buffer);


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

# Add to the query some instructions for sorting the bug list.
if ($::COOKIE{'LASTORDER'} && !$order || $order =~ /^reuse/i) {
    $order = url_decode($::COOKIE{'LASTORDER'});
    $order_from_cookie = 1;
}

if ($order) {
    my $db_order;  # Modified version of $order for use with SQL query

    # Convert the value of the "order" form field into a list of columns
    # by which to sort the results.
    ORDER: for ($order) {
        /\./ && do {
            # A custom list of columns.  Make sure each column is valid.
            foreach my $fragment (split(/[,\s]+/, $order)) {
                next if $fragment =~ /^asc|desc$/i;
                my @columnnames = map($columns->{lc($_)}->{'name'}, keys(%$columns));
                if (!grep($_ eq $fragment, @columnnames)) {
                    my $qfragment = html_quote($fragment);
                    my $error = "The custom sort order you specified in your "
                              . "form submission contains an invalid column "
                              . "name <em>$qfragment</em>.";
                    if ($order_from_cookie) {
                        my $cookiepath = Param("cookiepath");
                        print "Set-Cookie: LASTORDER= ; path=$cookiepath; expires=Sun, 30-Jun-80 00:00:00 GMT\n";
                        $error =~ s/form submission/cookie/;
                        $error .= "  The cookie has been cleared.";
                    }
                    DisplayError($error);
                    exit;
                }
            }
            # Now that we have checked that all columns in the order are valid,
            # detaint the order string.
            trick_taint($order);
            last ORDER;
        };
        /Number/ && do {
            $order = "bugs.bug_id";
            last ORDER;
        };
        /Import/ && do {
            $order = "bugs.priority, bugs.bug_severity";
            last ORDER;
        };
        /Assign/ && do {
            $order = "map_assigned_to.login_name, bugs.bug_status, priority, bugs.bug_id";
            last ORDER;
        };
        /Changed/ && do {
            $order = "bugs.delta_ts, bugs.bug_status, bugs.priority, map_assigned_to.login_name, bugs.bug_id";
            last ORDER;
        };
        # DEFAULT
        $order = "bugs.bug_status, bugs.priority, map_assigned_to.login_name, bugs.bug_id";
    }

    $db_order = $order;  # Copy $order into $db_order for use with SQL query

    # Extra special disgusting hack: if we are ordering by target_milestone,
    # change it to order by the sortkey of the target_milestone first.
    if ($db_order =~ /bugs.target_milestone/) {
        $db_order =~ s/bugs.target_milestone/ms_order.sortkey,ms_order.value/;
        $query =~ s/\sWHERE\s/ LEFT JOIN milestones ms_order ON ms_order.value = bugs.target_milestone AND ms_order.product = bugs.product WHERE /;
    }

    # If we are sorting by votes, sort in descending order.
    if ($db_order =~ /bugs.votes\s*(asc|desc){0}/i) {
        $db_order =~ s/bugs.votes/bugs.votes desc/i;
    }

    $query .= " ORDER BY $db_order ";
}


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

# 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 ($serverpush) {
    # Generate HTTP headers.
    print "Content-Disposition: inline; filename=$filename\n";
    print "Content-Type: multipart/x-mixed-replace;boundary=thisrandomstring\n\n";
    print "--thisrandomstring\n";
    print "Content-Type: text/html\n\n";

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

# Connect to the shadow database if this installation is using one to improve
# query performance.
ReconnectToShadowDatabase();

# Tell MySQL to store temporary tables on the hard drive instead of memory
# to avoid "table out of space" errors on MySQL versions less than 3.23.2.
SendSQL("SET OPTION SQL_BIG_TABLES=1") if Param('expectbigqueries');

# Normally, we ignore SIGTERM and SIGPIPE (see globals.pl) 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.
SendSQL($query);


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

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

my $bugowners = {};
my $bugproducts = {};
my $bugstatuses = {};

my @bugs; # the list of records

while (my @row = FetchSQLData()) {
    my $bug = {}; # a record

    # Slurp the row of data into the record.
    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/;
        $bug->{'changeddate'} = DiffDate($bug->{'changeddate'});
    }
    ($bug->{'opendate'} = DiffDate($bug->{'opendate'})) if $bug->{'opendate'};

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

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

# Switch back from the shadow database to the regular database so PutFooter()
# can determine the current user even if the "logincookies" table is corrupted
# in the shadow database.
SendSQL("USE $::db_name");


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

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

$vars->{'bugs'} = \@bugs;
$vars->{'buglist'} = join(',', map($_->{id}, @bugs));
$vars->{'columns'} = $columns;
$vars->{'displaycolumns'} = \@displaycolumns;

my @openstates = OpenStates();
$vars->{'openstates'} = \@openstates;
$vars->{'closedstates'} = ['CLOSED', 'VERIFIED', 'RESOLVED'];

# 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 start with the raw URL query string
# buffer that was created when we initially parsed the URL on script startup,
# then we remove all non-query fields from it, f.e. the sort order (order)
# and command type (cmdtype) fields.
$vars->{'urlquerypart'} = $::buffer;
$vars->{'urlquerypart'} =~ s/[&?](order|cmdtype)=[^&]*//g;
$vars->{'order'} = $order;

# The user's login account name (i.e. email address).
my $login = $::COOKIE{'Bugzilla_login'};

$vars->{'caneditbugs'} = UserInGroup('editbugs');
$vars->{'usebuggroups'} = Param('usebuggroups');

# Whether or not this user is authorized to move bugs to another installation.
$vars->{'ismover'} = 1
  if Param('move-enabled')
    && defined($login)
      && Param('movers') =~ /^(\Q$login\E[,\s])|([,\s]\Q$login\E[,\s]+)/;

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

if ($::FORM{'debug'}) {
    $vars->{'debug'} = 1;
    $vars->{'query'} = $query;
}

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

$vars->{'quip'} = GetQuip() if Param('usequip');
$vars->{'currenttime'} = time2str("%a %b %e %T %Z %Y", time());

# The following variables are used when the user is making changes to multiple bugs.
if ($dotweak) {
    $vars->{'dotweak'} = 1;
    $vars->{'use_keywords'} = 1 if @::legal_keywords;

    $vars->{'products'} = \@::legal_product;
    $vars->{'platforms'} = \@::legal_platform;
    $vars->{'priorities'} = \@::legal_priority;
    $vars->{'severities'} = \@::legal_severity;
    $vars->{'resolutions'} = \@::settable_resolution;

    # The value that represents "don't change the value of this field".
    $vars->{'dontchange'} = $::dontchange;

    $vars->{'unconfirmedstate'} = $::unconfirmedstate;

    $vars->{'bugstatuses'} = [ keys %$bugstatuses ];

    # The groups to which the user belongs.
    $vars->{'groups'} = GetGroupsByGroupSet($::usergroupset) if $::usergroupset ne '0';

    # 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.
    $vars->{'bugproducts'} = [ keys %$bugproducts ];
    if (scalar(@{$vars->{'bugproducts'}}) == 1) {
        my $product = $vars->{'bugproducts'}->[0];
        $vars->{'versions'} = $::versions{$product};
        $vars->{'components'} = $::components{$product};
        $vars->{'targetmilestones'} = $::target_milestone{$product} if Param('usetargetmilestone');
    }
}


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

# If we are doing server push, output a separator string.
print "\n--thisrandomstring\n" if $serverpush;
    
# Generate HTTP headers

# Suggest a name for the bug list if the user wants to save it as a file.
# If we are doing server push, then we did this already in the HTTP headers
# that started the server push, so we don't have to do it again here.
print "Content-Disposition: inline; filename=$filename\n" unless $serverpush;

if ($format->{'extension'} eq "html") {
    my $cookiepath = Param("cookiepath");
    print "Content-Type: text/html\n";

    if ($order) {
        my $qorder = url_quote($order);
        print "Set-Cookie: LASTORDER=$qorder ; path=$cookiepath; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
    }
    my $bugids = join(":", map( $_->{'id'}, @bugs));
    # See also Bug 111999
    if (length($bugids) < 4000) {
        print "Set-Cookie: BUGLIST=$bugids ; path=$cookiepath; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
    }
    else {
        print "Set-Cookie: BUGLIST= ; path=$cookiepath; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
        $vars->{'toolong'} = 1;
    }
}
else {
    print "Content-Type: $format->{'contenttype'}\n";
}

print "\n"; # end HTTP headers


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

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


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

print "\n--thisrandomstring--\n" if $serverpush;