summaryrefslogtreecommitdiffstats
path: root/CGI.pl
blob: c2737c7b700ad3bd73b72f18e6a4cb346494ba32 (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
# -*- 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>
#                 Joe Robins <jmrobins@tgix.com>

# Contains some global routines used throughout the CGI scripts of Bugzilla.

use diagnostics;
use strict;
# use Carp;                       # for confess
# Shut up misguided -w warnings about "used only once".  For some reason,
# "use vars" chokes on me when I try it here.

# commented out the following snippet of code. this tosses errors into the
# CGI if you are perl 5.6, and doesn't if you have perl 5.003. 
# We want to check for the existence of the LDAP modules here.
# eval "use Mozilla::LDAP::Conn";
# my $have_ldap = $@ ? 0 : 1;


sub CGI_pl_sillyness {
    my $zz;
    $zz = %::FILENAME;
    $zz = %::MFORM;
    $zz = %::dontchange;
}

use CGI::Carp qw(fatalsToBrowser);

require 'globals.pl';

sub GeneratePersonInput {
    my ($field, $required, $def_value, $extraJavaScript) = (@_);
    $extraJavaScript ||= "";
    if ($extraJavaScript ne "") {
        $extraJavaScript = "onChange=\"$extraJavaScript\"";
    }
    return "<INPUT NAME=\"$field\" SIZE=32 $extraJavaScript VALUE=\"$def_value\">";
}

sub GeneratePeopleInput {
    my ($field, $def_value) = (@_);
    return "<INPUT NAME=\"$field\" SIZE=45 VALUE=\"$def_value\">";
}




# Implementations of several of the below were blatently stolen from CGI.pm,
# by Lincoln D. Stein.


# Get rid of all the %xx encoding and the like from the given URL.

sub url_decode {
    my ($todecode) = (@_);
    $todecode =~ tr/+/ /;       # pluses become spaces
    $todecode =~ s/%([0-9a-fA-F]{2})/pack("c",hex($1))/ge;
    return $todecode;
}


# Quotify a string, suitable for putting into a URL.

sub url_quote {
    my($toencode) = (@_);
    $toencode=~s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
    return $toencode;
}


sub ParseUrlString {
    my ($buffer, $f, $m) = (@_);
    undef %$f;
    undef %$m;

    my %isnull;
    my $remaining = $buffer;
    while ($remaining ne "") {
	my $item;
	if ($remaining =~ /^([^&]*)&(.*)$/) {
	    $item = $1;
	    $remaining = $2;
	} else {
	    $item = $remaining;
	    $remaining = "";
	}

	my $name;
	my $value;
	if ($item =~ /^([^=]*)=(.*)$/) {
	    $name = $1;
	    $value = url_decode($2);
	} else {
	    $name = $item;
	    $value = "";
	}
	if ($value ne "") {
	    if (defined $f->{$name}) {
		$f->{$name} .= $value;
		my $ref = $m->{$name};
		push @$ref, $value;
	    } else {
		$f->{$name} = $value;
		$m->{$name} = [$value];
	    }
        } else {
            $isnull{$name} = 1;
        }
    }
    if (%isnull) {
        foreach my $name (keys(%isnull)) {
            if (!defined $f->{$name}) {
                $f->{$name} = "";
                $m->{$name} = [];
            }
        }
    }
}


sub ProcessFormFields {
    my ($buffer) = (@_);
    return ParseUrlString($buffer, \%::FORM, \%::MFORM);
}


sub ProcessMultipartFormFields {
    my ($boundary) = (@_);
    $boundary =~ s/^-*//;
    my $remaining = $ENV{"CONTENT_LENGTH"};
    my $inheader = 1;
    my $itemname = "";
#    open(DEBUG, ">debug") || die "Can't open debugging thing";
#    print DEBUG "Boundary is '$boundary'\n";
    while ($remaining > 0 && ($_ = <STDIN>)) {
        $remaining -= length($_);
#        print DEBUG "< $_";
        if ($_ =~ m/^-*$boundary/) {
#            print DEBUG "Entered header\n";
            $inheader = 1;
            $itemname = "";
            next;
        }

        if ($inheader) {
            if (m/^\s*$/) {
                $inheader = 0;
#                print DEBUG "left header\n";
                $::FORM{$itemname} = "";
            }
            if (m/^Content-Disposition:\s*form-data\s*;\s*name\s*=\s*"([^\"]+)"/i) {
                $itemname = $1;
#                print DEBUG "Found itemname $itemname\n";
                if (m/;\s*filename\s*=\s*"([^\"]+)"/i) {
                    $::FILENAME{$itemname} = $1;
                }
            }
            
            next;
        }
        $::FORM{$itemname} .= $_;
    }
    delete $::FORM{""};
    # Get rid of trailing newlines.
    foreach my $i (keys %::FORM) {
        chomp($::FORM{$i});
        $::FORM{$i} =~ s/\r$//;
    }
}


# check and see if a given field exists, is non-empty, and is set to a 
# legal value.  assume a browser bug and abort appropriately if not.
# if $legalsRef is not passed, just check to make sure the value exists and 
# is non-NULL
# 
sub CheckFormField (\%$;\@) {
    my ($formRef,                # a reference to the form to check (a hash)
        $fieldname,              # the fieldname to check
        $legalsRef               # (optional) ref to a list of legal values 
       ) = @_;

    if ( !defined $formRef->{$fieldname} ||
         trim($formRef->{$fieldname}) eq "" ||
         (defined($legalsRef) && 
          lsearch($legalsRef, $formRef->{$fieldname})<0) ){

        print "A legal $fieldname was not set; ";
        print Param("browserbugmessage");
        PutFooter();
        exit 0;
      }
}

# check and see if a given field is defined, and abort if not
# 
sub CheckFormFieldDefined (\%$) {
    my ($formRef,                # a reference to the form to check (a hash)
        $fieldname,              # the fieldname to check
       ) = @_;

    if ( !defined $formRef->{$fieldname} ) {
        print "$fieldname was not defined; ";
        print Param("browserbugmessage");
        PutFooter();
        exit 0;
      }
}

sub ValidateBugID {
    # Validates and verifies a bug ID, making sure the number is a 
    # positive integer, that it represents an existing bug in the
    # database, and that the user is authorized to access that bug.

    my ($id) = @_;

    # Make sure the bug number is a positive integer.
    $id =~ /^([1-9][0-9]*)$/
      || DisplayError("The bug number is invalid.") 
      && exit;

    # Get the values of the usergroupset and userid global variables
    # and write them to local variables for use within this function,
    # setting those local variables to the default value of zero if
    # the global variables are undefined.

    # "usergroupset" stores the set of groups the user is a member of,
    # while "userid" stores the user's unique ID.  These variables are
    # set globally by either confirm_login() or quietly_check_login(),
    # one of which should be run before calling this function; otherwise
    # this function will treat the user as if they were not logged in
    # and throw an error if they try to access a bug that requires
    # permissions/authorization to access.
    my $usergroupset = $::usergroupset || 0;
    my $userid = $::userid || 0;

    # Query the database for the bug, retrieving a boolean value that
    # represents whether or not the user is authorized to access the bug.  

    # Users are authorized to access bugs if they are a member of all 
    # groups to which the bug is restricted.  User group membership and 
    # bug restrictions are stored as bits within bitsets, so authorization
    # can be determined by comparing the intersection of the user's
    # bitset with the bug's bitset.  If the result matches the bug's bitset
    # the user is a member of all groups to which the bug is restricted
    # and is authorized to access the bug.

    # Bit arithmetic is performed by MySQL instead of Perl because bitset
    # fields in the database are 64 bits wide (BIGINT), and Perl installations
    # may or may not support integers larger than 32 bits.  Using bitsets
    # and doing bitset arithmetic is probably not cross-database compatible,
    # however, so these mechanisms are likely to change in the future.
    SendSQL("SELECT ((groupset & $usergroupset) = groupset) 
             FROM bugs WHERE bug_id = $id");

    # Make sure the bug exists in the database.
    MoreSQLData()
      || DisplayError("Bug #$id does not exist.")
      && exit;

    # Make sure the user is authorized to access the bug.
    my ($isauthorized) = FetchSQLData();
    $isauthorized
      || (
           $userid ?
           DisplayError("You are not authorized to access bug #$id.") : 
           DisplayError(
             qq|You are not authorized to access bug #$id. 
             To see this bug, you must first 
             <a href="show_bug.cgi?id=$id&GoAheadAndLogIn=1">log in</a> 
             to an account with the appropriate permissions.|
           )
         )
      && exit;
}

# check and see if a given string actually represents a positive
# integer, and abort if not.
# 
sub CheckPosInt($) {
    my ($number) = @_;              # the fieldname to check

    if ( $number !~ /^[1-9][0-9]*$/ ) {
        print "Received string \"$number\" when postive integer expected; ";
        print Param("browserbugmessage");
        PutFooter();
        exit 0;
      }
}

sub FormData {
    my ($field) = (@_);
    return $::FORM{$field};
}

sub html_quote {
    my ($var) = (@_);
    $var =~ s/\&/\&amp;/g;
    $var =~ s/</\&lt;/g;
    $var =~ s/>/\&gt;/g;
    return $var;
}

sub value_quote {
    my ($var) = (@_);
    $var =~ s/\&/\&amp;/g;
    $var =~ s/</\&lt;/g;
    $var =~ s/>/\&gt;/g;
    $var =~ s/"/\&quot;/g;
    # See bug http://bugzilla.mozilla.org/show_bug.cgi?id=4928 for 
    # explanaion of why bugzilla does this linebreak substitution. 
    # This caused form submission problems in mozilla (bug 22983, 32000).
    $var =~ s/\r\n/\&#013;/g;
    $var =~ s/\n\r/\&#013;/g;
    $var =~ s/\r/\&#013;/g;
    $var =~ s/\n/\&#013;/g;
    return $var;
}

sub navigation_header {
    if (defined $::COOKIE{"BUGLIST"} && $::COOKIE{"BUGLIST"} ne "" &&
        defined $::FORM{'id'}) {
	my @bugs = split(/:/, $::COOKIE{"BUGLIST"});
	my $cur = lsearch(\@bugs, $::FORM{"id"});
	print "<B>Bug List:</B> (@{[$cur + 1]} of @{[$#bugs + 1]})\n";
	print "<A HREF=\"show_bug.cgi?id=$bugs[0]\">First</A>\n";
	print "<A HREF=\"show_bug.cgi?id=$bugs[$#bugs]\">Last</A>\n";
	if ($cur > 0) {
	    print "<A HREF=\"show_bug.cgi?id=$bugs[$cur - 1]\">Prev</A>\n";
	} else {
	    print "<I><FONT COLOR=\#777777>Prev</FONT></I>\n";
	}
	if ($cur < $#bugs) {
	    $::next_bug = $bugs[$cur + 1];
	    print "<A HREF=\"show_bug.cgi?id=$::next_bug\">Next</A>\n";
	} else {
	    print "<I><FONT COLOR=\#777777>Next</FONT></I>\n";
	}
        print qq{&nbsp;&nbsp;<A HREF="buglist.cgi?regetlastlist=1">Show list</A>\n};
    }
    print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=query.cgi>Query page</A>\n";
    print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A HREF=enter_bug.cgi>Enter new bug</A>\n"
}

sub make_checkboxes {
    my ($src,$default,$isregexp,$name) = (@_);
    my $last = "";
    my $capitalized = "";
    my $popup = "";
    my $found = 0;
    $default = "" if !defined $default;

    if ($src) {
        foreach my $item (@$src) {
            if ($item eq "-blank-" || $item ne $last) {
                if ($item eq "-blank-") {
                    $item = "";
                }
                $last = $item;
                $capitalized = $item;
                $capitalized =~ tr/A-Z/a-z/;
                $capitalized =~ s/^(.?)(.*)/\u$1$2/;
                if ($isregexp ? $item =~ $default : $default eq $item) {
                    $popup .= "<INPUT NAME=$name TYPE=CHECKBOX VALUE=\"$item\" CHECKED>$capitalized<br>";
                    $found = 1;
                } else {
                    $popup .= "<INPUT NAME=$name TYPE=CHECKBOX VALUE=\"$item\">$capitalized<br>";
                }
            }
        }
    }
    if (!$found && $default ne "") {
	$popup .= "<INPUT NAME=$name TYPE=CHECKBOX CHECKED>$default";
    }
    return $popup;
}

#
# make_selection_widget: creates an HTML selection widget from a list of text strings.
# $groupname is the name of the setting (form value) that this widget will control
# $src is the list of options
# you can specify a $default value which is either a string or a regex pattern to match to
#    identify the default value
# $capitalize lets you optionally capitalize the option strings; the default is the value
#    of Param("capitalizelists")
# $multiple is 1 if several options are selectable (default), 0 otherwise.
# $size is used for lists to control how many items are shown. The default is 7. A list of
#    size 1 becomes a popup menu.
# $preferLists is 1 if selection lists should be used in favor of radio buttons and
#    checkboxes, and 0 otherwise. The default is the value of Param("preferlists").
#
# The actual widget generated depends on the parameter settings:
# 
#        MULTIPLE     PREFERLISTS    SIZE     RESULT
#       0 (single)        0           =1      Popup Menu (normal for list of size 1)
#       0 (single)        0           >1      Radio buttons
#       0 (single)        1           =1      Popup Menu (normal for list of size 1)
#       0 (single)        1           n>1     List of size n, single selection
#       1 (multi)         0           n/a     Check boxes; size ignored
#       1 (multi)         1           n/a     List of size n, multiple selection, of size n
#
sub make_selection_widget {
    my ($groupname,$src,$default,$isregexp,$multiple, $size, $capitalize, $preferLists) = (@_);
    my $last = "";
    my $popup = "";
    my $found = 0;
    my $displaytext = "";
    $groupname = "" if !defined $groupname;
    $default = "" if !defined $default;
    $capitalize = Param("capitalizelists") if !defined $capitalize;
    $multiple = 1 if !defined $multiple;
    $preferLists = Param("preferlists") if !defined $preferLists;
    $size = 7 if !defined $size;
    my $type = "LIST";
    if (!$preferLists) {
        if ($multiple) {
            $type = "CHECKBOX";
        } else {
            if ($size > 1) {
                $type = "RADIO";
            }
        }
    }

    if ($type eq "LIST") {
        $popup .= "<SELECT NAME=\"$groupname\"";
        if ($multiple) {
            $popup .= " MULTIPLE";
        }
        $popup .= " SIZE=$size>\n";
    }
    if ($src) {
        foreach my $item (@$src) {
            if ($item eq "-blank-" || $item ne $last) {
                if ($item eq "-blank-") {
                    $item = "";
                }
                $last = $item;
                $displaytext = $item;
                if ($capitalize) {
                    $displaytext =~ tr/A-Z/a-z/;
                    $displaytext =~ s/^(.?)(.*)/\u$1$2/;
                }   

                if ($isregexp ? $item =~ $default : $default eq $item) {
                    if ($type eq "CHECKBOX") {
                        $popup .= "<INPUT NAME=$groupname type=checkbox VALUE=\"$item\" CHECKED>$displaytext<br>";
                    } elsif ($type eq "RADIO") {
                        $popup .= "<INPUT NAME=$groupname type=radio VALUE=\"$item\" check>$displaytext<br>";
                    } else {
                        $popup .= "<OPTION SELECTED VALUE=\"$item\">$displaytext";
                    }
                    $found = 1;
                } else {
                    if ($type eq "CHECKBOX") {
                        $popup .= "<INPUT NAME=$groupname type=checkbox VALUE=\"$item\">$displaytext<br>";
                    } elsif ($type eq "RADIO") {
                        $popup .= "<INPUT NAME=$groupname type=radio VALUE=\"$item\">$displaytext<br>";
                    } else {
                        $popup .= "<OPTION VALUE=\"$item\">$displaytext";
                    }
                }
            }
        }
    }
    if (!$found && $default ne "") {
        if ($type eq "CHECKBOX") {
            $popup .= "<INPUT NAME=$groupname type=checkbox CHECKED>$default";
        } elsif ($type eq "RADIO") {
            $popup .= "<INPUT NAME=$groupname type=radio checked>$default";
        } else {
            $popup .= "<OPTION SELECTED>$default";
        }
    }
    if ($type eq "LIST") {
        $popup .= "</SELECT>";
    }
    return $popup;
}


$::CheckOptionValues = 1;

sub make_options {
    my ($src,$default,$isregexp) = (@_);
    my $last = "";
    my $popup = "";
    my $found = 0;
    $default = "" if !defined $default;

    if ($src) {
        foreach my $item (@$src) {
            if ($item eq "-blank-" || $item ne $last) {
                if ($item eq "-blank-") {
                    $item = "";
                }
                $last = $item;
                if ($isregexp ? $item =~ $default : $default eq $item) {
                    $popup .= "<OPTION SELECTED VALUE=\"$item\">$item";
                    $found = 1;
                } else {
                    $popup .= "<OPTION VALUE=\"$item\">$item";
                }
            }
        }
    }
    if (!$found && $default ne "") {
      if ( Param("strictvaluechecks") && $::CheckOptionValues &&
           ($default ne $::dontchange) && ($default ne "-All-") &&
           ($default ne "DUPLICATE") ) {
        print "Possible bug database corruption has been detected.  " .
              "Please send mail to " . Param("maintainer") . " with " .
              "details of what you were doing when this message " . 
              "appeared.  Thank you.\n";
        if (!$src) {
            $src = ["???null???"];
        }
        print "<pre>src = " . value_quote(join(' ', @$src)) . "\n";
        print "default = " . value_quote($default) . "</pre>";
        PutFooter();
#        confess "Gulp.";
        exit 0;
              
      } else {
	$popup .= "<OPTION SELECTED>$default";
      }
    }
    return $popup;
}


sub make_popup {
    my ($name,$src,$default,$listtype,$onchange) = (@_);
    my $popup = "<SELECT NAME=$name";
    if ($listtype > 0) {
        $popup .= " SIZE=5";
        if ($listtype == 2) {
            $popup .= " MULTIPLE";
        }
    }
    if (defined $onchange && $onchange ne "") {
        $popup .= " onchange=$onchange";
    }
    $popup .= ">" . make_options($src, $default,
                                 ($listtype == 2 && $default ne ""));
    $popup .= "</SELECT>";
    return $popup;
}


sub BuildPulldown {
    my ($name, $valuelist, $default) = (@_);

    my $entry = qq{<SELECT NAME="$name">};
    foreach my $i (@$valuelist) {
        my ($tag, $desc) = (@$i);
        my $selectpart = "";
        if ($tag eq $default) {
            $selectpart = " SELECTED";
        }
        if (!defined $desc) {
            $desc = $tag;
        }
        $entry .= qq{<OPTION$selectpart VALUE="$tag">$desc\n};
    }
    $entry .= qq{</SELECT>};
    return $entry;
}




sub PasswordForLogin {
    my ($login) = (@_);
    SendSQL("select cryptpassword from profiles where login_name = " .
	    SqlQuote($login));
    my $result = FetchOneColumn();
    if (!defined $result) {
        $result = "";
    }
    return $result;
}


sub quietly_check_login() {
    $::usergroupset = '0';
    my $loginok = 0;
    $::disabledreason = '';
    $::userid = 0;
    if (defined $::COOKIE{"Bugzilla_login"} &&
	defined $::COOKIE{"Bugzilla_logincookie"}) {
        ConnectToDatabase();
        if (!defined $ENV{'REMOTE_HOST'}) {
            $ENV{'REMOTE_HOST'} = $ENV{'REMOTE_ADDR'};
        }
        SendSQL("SELECT profiles.userid, profiles.groupset, " .
                "profiles.login_name, " .
                "profiles.login_name = " .
		SqlQuote($::COOKIE{"Bugzilla_login"}) .
		" AND profiles.cryptpassword = logincookies.cryptpassword " .
		"AND logincookies.hostname = " .
		SqlQuote($ENV{"REMOTE_HOST"}) .
                ", profiles.disabledtext " .
		" FROM profiles, logincookies WHERE logincookies.cookie = " .
		SqlQuote($::COOKIE{"Bugzilla_logincookie"}) .
		" AND profiles.userid = logincookies.userid");
        my @row;
        if (@row = FetchSQLData()) {
            my ($userid, $groupset, $loginname, $ok, $disabledtext) = (@row);
            if ($ok) {
                if ($disabledtext eq '') {
                    $loginok = 1;
                    $::userid = $userid;
                    $::usergroupset = $groupset;
                    $::COOKIE{"Bugzilla_login"} = $loginname; # Makes sure case
                                                              # is in
                                                              # canonical form.
                } else {
                    $::disabledreason = $disabledtext;
                }
            }
        }
    }
    # if 'who' is passed in, verify that it's a good value
    if ($::FORM{'who'}) {
        my $whoid = DBname_to_id($::FORM{'who'});
        delete $::FORM{'who'} unless $whoid;
    }
    if (!$loginok) {
        delete $::COOKIE{"Bugzilla_login"};
    }
    return $loginok;
}




sub CheckEmailSyntax {
    my ($addr) = (@_);
    my $match = Param('emailregexp');
    if ($addr !~ /$match/) {
        print "Content-type: text/html\n\n";

        # For security, escape HTML special characters.
        $addr = html_quote($addr);

        PutHeader("Check e-mail syntax");
        print "The e-mail address you entered\n";
        print "(<b>$addr</b>) didn't match our minimal\n";
        print "syntax checking for a legal email address.\n";
        print Param('emailregexpdesc');
        print "<p>Please click <b>back</b> and try again.\n";
        PutFooter();
        exit;
    }
}



sub MailPassword {
    my ($login, $password) = (@_);
    my $urlbase = Param("urlbase");
    my $template = Param("passwordmail");
    my $msg = PerformSubsts($template,
                            {"mailaddress" => $login . Param('emailsuffix'),
                             "login" => $login,
                             "password" => $password});

    open SENDMAIL, "|/usr/lib/sendmail -t";
    print SENDMAIL $msg;
    close SENDMAIL;

    print "The password for the e-mail address\n";
    print "$login has been e-mailed to that address.\n";
    print "<p>When the e-mail arrives, you can click <b>Back</b>\n";
    print "and enter your password in the form there.\n";
}


sub confirm_login {
    my ($nexturl) = (@_);

# Uncommenting the next line can help debugging...
#    print "Content-type: text/plain\n\n";

    ConnectToDatabase();
    # I'm going to reorganize some of this stuff a bit.  Since we're adding
    # a second possible validation method (LDAP), we need to move some of this
    # to a later section.  -Joe Robins, 8/3/00
    my $enteredlogin = "";
    my $realcryptpwd = "";
    if (defined $::FORM{"Bugzilla_login"} &&
	defined $::FORM{"Bugzilla_password"}) {

       $enteredlogin = $::FORM{"Bugzilla_login"};
       my $enteredpwd = $::FORM{"Bugzilla_password"};
       CheckEmailSyntax($enteredlogin);

       $realcryptpwd  = PasswordForLogin($::FORM{"Bugzilla_login"});

       if (defined $::FORM{"PleaseMailAPassword"}) {
         my $realpwd;
         if ($realcryptpwd eq "") {
           $realpwd = InsertNewUser($enteredlogin, "");
         } else {
           SendSQL("select password from profiles where login_name = " .
                   SqlQuote($enteredlogin));
           $realpwd = FetchOneColumn();
         }
         print "Content-type: text/html\n\n";
         PutHeader("Password has been emailed");
         MailPassword($enteredlogin, $realpwd);
         PutFooter();
         exit;
       }

       SendSQL("SELECT encrypt(" . SqlQuote($enteredpwd) . ", " .
               SqlQuote(substr($realcryptpwd, 0, 2)) . ")");
       my $enteredcryptpwd = FetchOneColumn();

       if ($realcryptpwd eq "" || $enteredcryptpwd ne $realcryptpwd) {
         print "Content-type: text/html\n\n";
         PutHeader("Login failed");
         print "The username or password you entered is not valid.\n";
         print "Please click <b>Back</b> and try again.\n";
         PutFooter();
         exit;
       }
     } elsif (Param("useLDAP") &&
              defined $::FORM{"LDAP_login"} &&
              defined $::FORM{"LDAP_password"}) {
       # If we're using LDAP for login, we've got an entirely different
       # set of things to check.

# see comment at top of file near eval
       # First, if we don't have the LDAP modules available to us, we can't
       # do this.
#       if(!$have_ldap) {
#         print "Content-type: text/html\n\n";
#         PutHeader("LDAP not enabled");
#         print "The necessary modules for LDAP login are not installed on ";
#         print "this machine.  Please send mail to ".Param("maintainer");
#         print " and notify him of this problem.\n";
#         PutFooter();
#         exit;
#       }

       # Next, we need to bind anonymously to the LDAP server.  This is
       # because we need to get the Distinguished Name of the user trying
       # to log in.  Some servers (such as iPlanet) allow you to have unique
       # uids spread out over a subtree of an area (such as "People"), so
       # just appending the Base DN to the uid isn't sufficient to get the
       # user's DN.  For servers which don't work this way, there will still
       # be no harm done.
       my $LDAPserver = Param("LDAPserver");
       if ($LDAPserver eq "") {
         print "Content-type: text/html\n\n";
         PutHeader("LDAP server not defined");
         print "The LDAP server for authentication has not been defined.  ";
         print "Please contact ".Param("maintainer")." ";
         print "and notify him of this problem.\n";
         PutFooter();
         exit;
       }

       my $LDAPport = "389";  #default LDAP port
       if($LDAPserver =~ /:/) {
         ($LDAPserver, $LDAPport) = split(":",$LDAPserver);
       }
       my $LDAPconn = new Mozilla::LDAP::Conn($LDAPserver,$LDAPport);
       if(!$LDAPconn) {
         print "Content-type: text/html\n\n";
         PutHeader("Unable to connect to LDAP server");
         print "I was unable to connect to the LDAP server for user ";
         print "authentication.  Please contact ".Param("maintainer");
         print " and notify him of this problem.\n";
         PutFooter();
         exit;
       }

       # We've got our anonymous bind;  let's look up this user.
       my $dnEntry = $LDAPconn->search(Param("LDAPBaseDN"),"subtree","uid=".$::FORM{"LDAP_login"});
       if(!$dnEntry) {
         print "Content-type: text/html\n\n";
         PutHeader("Login Failed");
         print "The username or password you entered is not valid.\n";
         print "Please click <b>Back</b> and try again.\n";
         PutFooter();
         exit;
       }

       # Now we get the DN from this search.  Once we've got that, we're
       # done with the anonymous bind, so we close it.
       my $userDN = $dnEntry->getDN;
       $LDAPconn->close;

       # Now we attempt to bind as the specified user.
       $LDAPconn = new Mozilla::LDAP::Conn($LDAPserver,$LDAPport,$userDN,$::FORM{"LDAP_password"});
       if(!$LDAPconn) {
         print "Content-type: text/html\n\n";
         PutHeader("Login Failed");
         print "The username or password you entered is not valid.\n";
         print "Please click <b>Back</b> and try again.\n";
         PutFooter();
         exit;
       }

       # And now we're going to repeat the search, so that we can get the
       # mail attribute for this user.
       my $userEntry = $LDAPconn->search(Param("LDAPBaseDN"),"subtree","uid=".$::FORM{"LDAP_login"});
       if(!$userEntry->exists(Param("LDAPmailattribute"))) {
         print "Content-type: text/html\n\n";
         PutHeader("LDAP authentication error");
         print "I was unable to retrieve the ".Param("LDAPmailattribute");
         print " attribute from the LDAP server.  Please contact ";
         print Param("maintainer")." and notify him of this error.\n";
         PutFooter();
         exit;
       }

       # Mozilla::LDAP::Entry->getValues returns an array for the attribute
       # requested, even if there's only one entry.
       $enteredlogin = ($userEntry->getValues(Param("LDAPmailattribute")))[0];

       # We're going to need the cryptpwd for this user from the database
       # so that we can set the cookie below, even though we're not going
       # to use it for authentication.
       $realcryptpwd = PasswordForLogin($enteredlogin);

       # If we don't get a result, then we've got a user who isn't in
       # Bugzilla's database yet, so we've got to add them.
       if($realcryptpwd eq "") {
         # We'll want the user's name for this.
         my $userRealName = ($userEntry->getValues("displayName"))[0];
         if($userRealName eq "") {
           $userRealName = ($userEntry->getValues("cn"))[0];
         }
         InsertNewUser($enteredlogin, $userRealName);
         $realcryptpwd = PasswordForLogin($enteredlogin);
       }
     } # end LDAP authentication

     # And now, if we've logged in via either method, then we need to set
     # the cookies.
     if($enteredlogin ne "") {
       $::COOKIE{"Bugzilla_login"} = $enteredlogin;
       if (!defined $ENV{'REMOTE_HOST'}) {
         $ENV{'REMOTE_HOST'} = $ENV{'REMOTE_ADDR'};
       }
       SendSQL("insert into logincookies (userid,cryptpassword,hostname) values (@{[DBNameToIdAndCheck($enteredlogin)]}, @{[SqlQuote($realcryptpwd)]}, @{[SqlQuote($ENV{'REMOTE_HOST'})]})");
       SendSQL("select LAST_INSERT_ID()");
       my $logincookie = FetchOneColumn();

       $::COOKIE{"Bugzilla_logincookie"} = $logincookie;
       print "Set-Cookie: Bugzilla_login=$enteredlogin ; path=/; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";
       print "Set-Cookie: Bugzilla_logincookie=$logincookie ; path=/; expires=Sun, 30-Jun-2029 00:00:00 GMT\n";

       # This next one just cleans out any old bugzilla passwords that may
       # be sitting around in the cookie files, from the bad old days when
       # we actually stored the password there.
       print "Set-Cookie: Bugzilla_password= ; path=/; expires=Sun, 30-Jun-80 00:00:00 GMT\n";
    }


    my $loginok = quietly_check_login();

    if ($loginok != 1) {
        if ($::disabledreason) {
            print "Set-Cookie: Bugzilla_login= ; path=/; expires=Sun, 30-Jun-80 00:00:00 GMT
Set-Cookie: Bugzilla_logincookie= ; path=/; expires=Sun, 30-Jun-80 00:00:00 GMT
Set-Cookie: Bugzilla_password= ; path=/; expires=Sun, 30-Jun-80 00:00:00 GMT
Content-type: text/html

";
            PutHeader("Your account has been disabled");
            print $::disabledreason;
            print "<HR>\n";
            print "If you believe your account should be restored, please\n";
            print "send email to " . Param("maintainer") . " explaining\n";
            print "why.\n";
            PutFooter();
            exit();
        }
        print "Content-type: text/html\n\n";
        PutHeader("Login", undef, undef, undef, 1);
        if(Param("useLDAP")) {
          print "I need a legitimate LDAP username and password to continue.\n";
        } else {
          print "I need a legitimate e-mail address and password to continue.\n";
        }
        if (!defined $nexturl || $nexturl eq "") {
	    # Sets nexturl to be argv0, stripping everything up to and
	    # including the last slash.
	    $0 =~ m:[^/]*$:;
	    $nexturl = $&;
        }
        my $method = "POST";
        if (defined $ENV{"REQUEST_METHOD"} && length($::buffer) > 1) {
            $method = $ENV{"REQUEST_METHOD"};
        }
        print "
<FORM action=$nexturl method=$method>
<table>
<tr>";
        if(Param("useLDAP")) {
          print "
<td align=right><b>Username:</b></td>
<td><input size=10 name=LDAP_login></td>
</tr>
<tr>
<td align=right><b>Password:</b></td>
<td><input type=password size=10 name=LDAP_password></td>";
        } else {
          print "
<td align=right><b>E-mail address:</b></td>
<td><input size=35 name=Bugzilla_login></td>
</tr>
<tr>
<td align=right><b>Password:</b></td>
<td><input type=password size=35 name=Bugzilla_password></td>";
        }
        print "
</tr>
</table>
";
        foreach my $i (keys %::FORM) {
            if ($i =~ /^Bugzilla_/) {
                next;
            }
            print "<input type=hidden name=$i value=\"@{[value_quote($::FORM{$i})]}\">\n";
        }
        print "
<input type=submit value=Login name=GoAheadAndLogIn><hr>
";
        # If we're using LDAP, we can't request that a password be mailed...
        unless(Param("useLDAP")) {
          print "
If you don't have a password, or have forgotten it, then please fill in the
e-mail address above and click
 here:<input type=submit value=\"E-mail me a password\"
name=PleaseMailAPassword>
</form>\n";
        }

        # This seems like as good as time as any to get rid of old
        # crufty junk in the logincookies table.  Get rid of any entry
        # that hasn't been used in a month.
        if ($::dbwritesallowed) {
            SendSQL("DELETE FROM logincookies " .
                    "WHERE TO_DAYS(NOW()) - TO_DAYS(lastused) > 30");
        }

        
        PutFooter();
        exit;
    }

    # Update the timestamp on our logincookie, so it'll keep on working.
    if ($::dbwritesallowed) {
        SendSQL("UPDATE logincookies SET lastused = null " .
                "WHERE cookie = $::COOKIE{'Bugzilla_logincookie'}");
    }
    return $::userid;
}


sub PutHeader {
    my ($title, $h1, $h2, $extra, $ignoreshutdown, $jscript) = (@_);

    if (!defined $h1) {
	$h1 = $title;
    }
    if (!defined $h2) {
	$h2 = "";
    }
    if (!defined $extra) {
	$extra = "";
    }
    $jscript ||= "";

    print "<HTML><HEAD>\n<TITLE>$title</TITLE>\n";
    print Param("headerhtml") . "\n$jscript\n</HEAD>\n";
    print "<BODY " . Param("bodyhtml") . " $extra>\n";

    print PerformSubsts(Param("bannerhtml"), undef);

    print "<TABLE BORDER=0 CELLSPACING=0 WIDTH=\"100%\">\n";
    print " <TR>\n";
    print "  <TD WIDTH=10% VALIGN=TOP ALIGN=LEFT>\n";
    print "   <TABLE BORDER=0 CELLPADDING=0 CELLSPACING=2>\n";
    print "    <TR><TD VALIGN=TOP ALIGN=LEFT NOWRAP>\n";
    print "     <FONT SIZE=+1><B>$h1</B></FONT>";
    print "    </TD></TR>\n";
    print "   </TABLE>\n";
    print "  </TD>\n";
    print "  <TD VALIGN=CENTER>&nbsp;</TD>\n";
    print "  <TD VALIGN=CENTER ALIGN=LEFT>\n";

    print "$h2\n";
    print "</TD></TR></TABLE>\n";

    if (Param("shutdownhtml")) {
        if (!$ignoreshutdown) {
            print Param("shutdownhtml");
            exit;
        }
    }
}


sub PutFooter {
    print PerformSubsts(Param("footerhtml"));
    SyncAnyPendingShadowChanges();
}


sub DisplayError {
  my ($message, $title) = (@_);
  $title ||= "Error";

  print "Content-type: text/html\n\n";
  PutHeader($title);

  print PerformSubsts( Param("errorhtml") , {errormsg => $message} );

  PutFooter();

  return 1;
}

sub PuntTryAgain ($) {
    my ($str) = (@_);
    print PerformSubsts(Param("errorhtml"),
                        {errormsg => $str});
    SendSQL("UNLOCK TABLES");
    PutFooter();
    exit;
}


sub CheckIfVotedConfirmed {
    my ($id, $who) = (@_);
    SendSQL("SELECT bugs.votes, bugs.bug_status, products.votestoconfirm, " .
            "       bugs.everconfirmed " .
            "FROM bugs, products " .
            "WHERE bugs.bug_id = $id AND products.product = bugs.product");
    my ($votes, $status, $votestoconfirm, $everconfirmed) = (FetchSQLData());
    if ($votes >= $votestoconfirm && $status eq $::unconfirmedstate) {
        SendSQL("UPDATE bugs SET bug_status = 'NEW', everconfirmed = 1 " .
                "WHERE bug_id = $id");
        my $fieldid = GetFieldID("bug_status");
        SendSQL("INSERT INTO bugs_activity " .
                "(bug_id,who,bug_when,fieldid,oldvalue,newvalue) VALUES " .
                "($id,$who,now(),$fieldid,'$::unconfirmedstate','NEW')");
        if (!$everconfirmed) {
            $fieldid = GetFieldID("everconfirmed");
            SendSQL("INSERT INTO bugs_activity " .
                    "(bug_id,who,bug_when,fieldid,oldvalue,newvalue) VALUES " .
                    "($id,$who,now(),$fieldid,'0','1')");
        }
        AppendComment($id, DBID_to_name($who),
                      "*** This bug has been confirmed by popular vote. ***");
        print "<TABLE BORDER=1><TD><H2>Bug $id has been confirmed by votes.</H2>\n";
        system("./processmail", $id);
        print "<TD><A HREF=\"show_bug.cgi?id=$id\">Go To BUG# $id</A></TABLE>\n";
    }

}



sub DumpBugActivity {
    my ($id, $starttime) = (@_);
    my $datepart = "";

    die "Invalid id: $id" unless $id=~/^\s*\d+\s*$/;

    if (defined $starttime) {
        $datepart = "and bugs_activity.bug_when >= $starttime";
    }
    my $query = "
        SELECT IFNULL(fielddefs.name, bugs_activity.fieldid),
                bugs_activity.bug_when,
                bugs_activity.oldvalue, bugs_activity.newvalue,
                profiles.login_name
        FROM bugs_activity LEFT JOIN fielddefs ON 
                                     bugs_activity.fieldid = fielddefs.fieldid,
             profiles
        WHERE bugs_activity.bug_id = $id $datepart
              AND profiles.userid = bugs_activity.who
        ORDER BY bugs_activity.bug_when";

    SendSQL($query);
    
    print "<table border cellpadding=4>\n";
    print "<tr>\n";
    print "    <th>Who</th><th>What</th><th>Old value</th><th>New value</th><th>When</th>\n";
    print "</tr>\n";
    
    my @row;
    while (@row = FetchSQLData()) {
        my ($field,$when,$old,$new,$who) = (@row);
        $old = value_quote($old);
        $new = value_quote($new);
        if ($old eq "") {
            $old = "&nbsp;";
        }
        if ($new eq "") {
            $new = "&nbsp;";
        }
        print "<tr>\n";
        print "<td>$who</td>\n";
        print "<td>$field</td>\n";
        print "<td>$old</td>\n";
        print "<td>$new</td>\n";
        print "<td>$when</td>\n";
        print "</tr>\n";
    }
    print "</table>\n";
}


sub GetCommandMenu {
    my $loggedin = quietly_check_login();
    my $html = "";
    $html .= <<"--endquote--";
<FORM METHOD=GET ACTION="show_bug.cgi">
<TABLE width="100%"><TR><TD>
Actions:
</TD><TD VALIGN="middle" NOWRAP>
<a href='enter_bug.cgi'>New</a> | <a href='query.cgi'>Query</a> |
--endquote--

    if (-e "query2.cgi") {
        $html .= "[<a href='query2.cgi'>beta</a>]";
    }
    
    $html .=
        qq{ <INPUT TYPE=SUBMIT VALUE="Find"> bug \# <INPUT NAME=id SIZE=6>};

    $html .= " | <a href='reports.cgi'>Reports</a>"; 
    if ($loggedin) {
        if ($::anyvotesallowed) {
            $html .= " | <A HREF=\"showvotes.cgi\">My votes</A>";
        }
    }
    if ($loggedin) {
    	#a little mandatory SQL, used later on
        SendSQL("SELECT mybugslink, userid, blessgroupset FROM profiles " .
                "WHERE login_name = " . SqlQuote($::COOKIE{'Bugzilla_login'}));
        my ($mybugslink, $userid, $blessgroupset) = (FetchSQLData());
        
        #Begin settings
        $html .= "</TD><TD>&nbsp;</TD><TD VALIGN=middle><NOBR>Edit <a href='userprefs.cgi'>prefs</a></NOBR>";
        if (UserInGroup("tweakparams")) {
            $html .= ", <a href=editparams.cgi>parameters</a>";
            $html .= ", <a href=sanitycheck.cgi><NOBR>sanity check</NOBR></a>";
        }
        if (UserInGroup("editusers") || $blessgroupset) {
            $html .= ", <a href=editusers.cgi>users</a>";
        }
        if (UserInGroup("editcomponents")) {
            $html .= ", <a href=editproducts.cgi>components</a>";
        }
        if (UserInGroup("creategroups")) {
            $html .= ", <a href=editgroups.cgi>groups</a>";
        }
        if (UserInGroup("editkeywords")) {
            $html .= ", <a href=editkeywords.cgi>keywords</a>";
        }
        $html .= " | <NOBR><a href=relogin.cgi>Log out</a> $::COOKIE{'Bugzilla_login'}</NOBR>";
        $html .= "</TD></TR>";
        
		#begin preset queries
        my $mybugstemplate = Param("mybugstemplate");
        my %substs;
        $substs{'userid'} = url_quote($::COOKIE{"Bugzilla_login"});
        if (!defined $::anyvotesallowed) {
            GetVersionTable();
        }
        $html .= "</TR><TR>";
        $html .= "<TD>Preset Queries: </TD>";
        $html .= "<TD colspan=3>\n";
        if ($mybugslink) {
            my $mybugsurl = PerformSubsts($mybugstemplate, \%substs);
            $html = $html . "<A HREF='$mybugsurl'><NOBR>My bugs</NOBR></A>";
        }
        SendSQL("SELECT name FROM namedqueries " .
                "WHERE userid = $userid AND linkinfooter");
        my $anynamedqueries = 0;
        while (MoreSQLData()) {
            my ($name) = (FetchSQLData());
            if ($anynamedqueries || $mybugslink) { $html .= " | " }
            $anynamedqueries = 1;
            $html .= "<A HREF=\"buglist.cgi?&cmdtype=runnamed&namedcmd=" .
                     url_quote($name) . "\"><NOBR>$name</NOBR></A>";
        }
        $html .= "</TR>\n<TR>";
    } else {
    $html .= "</TD><TD>&nbsp;</TD><TD valign=middle align=right>\n";
        $html .=
            " <a href=\"createaccount.cgi\"><NOBR>New account</NOBR></a>\n";
        $html .=
            " | <NOBR><a href=query.cgi?GoAheadAndLogIn=1>Log in</a></NOBR>";
        $html .= "</TD></TR>";
    }
    $html .= "</FORM>\n";
    $html .= "</TABLE>";                
    return $html;
}

############# Live code below here (that is, not subroutine defs) #############


$| = 1;

# Uncommenting this next line can help debugging.
# print "Content-type: text/html\n\nHello mom\n";

# foreach my $k (sort(keys %ENV)) {
#     print "$k $ENV{$k}<br>\n";
# }

if (defined $ENV{"REQUEST_METHOD"}) {
    if ($ENV{"REQUEST_METHOD"} eq "GET") {
        if (defined $ENV{"QUERY_STRING"}) {
            $::buffer = $ENV{"QUERY_STRING"};
        } else {
            $::buffer = "";
        }
        ProcessFormFields $::buffer;
    } else {
        if (exists($ENV{"CONTENT_TYPE"}) && $ENV{"CONTENT_TYPE"} =~
            m@multipart/form-data; boundary=\s*([^; ]+)@) {
            ProcessMultipartFormFields($1);
            $::buffer = "";
        } else {
            read STDIN, $::buffer, $ENV{"CONTENT_LENGTH"} ||
                die "Couldn't get form data";
            ProcessFormFields $::buffer;
        }
    }
}


if (defined $ENV{"HTTP_COOKIE"}) {
    foreach my $pair (split(/;/, $ENV{"HTTP_COOKIE"})) {
	$pair = trim($pair);
	if ($pair =~ /^([^=]*)=(.*)$/) {
	    $::COOKIE{$1} = $2;
	} else {
	    $::COOKIE{$pair} = "";
	}
    }
}

1;