summaryrefslogtreecommitdiffstats
path: root/perl-install/pkgs.pm
blob: 2f0aeaaac92ac6315083b674e680cd74824535d2 (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
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
package pkgs; # $Id$

use diagnostics;
use strict;
use vars qw(*LOG %preferred $limitMinTrans %compssListDesc);

use MDK::Common::System;
use common;
use install_any;
use run_program;
use detect_devices;
use log;
use fs;
use loopback;
use c;



my @preferred = qw(perl-GTK postfix proftpd ghostscript-X vim-minimal kernel db1 db2 ispell-en Bastille-Curses-module nautilus);
@preferred{@preferred} = ();

#- lower bound on the left ( aka 90 means [90-100[ )
%compssListDesc = (
   5 => __("must have"),
   4 => __("important"),
   3 => __("very nice"),
   2 => __("nice"),
   1 => __("maybe"),
);

#- constant for small transaction.
$limitMinTrans = 8;

#- constant for package accessor (via table).
my $FILE                 = 0;
my $FLAGS                = 1;
my $SIZE_DEPS            = 2;
my $MEDIUM               = 3;
my $PROVIDES             = 4;
my $VALUES               = 5;
my $HEADER               = 6;
my $INSTALLED_CUMUL_SIZE = 7;
my $EPOCH                = 8;

#- constant for packing flags, see below.
my $PKGS_SELECTED  = 0x00ffffff;
my $PKGS_FORCE     = 0x01000000;
my $PKGS_INSTALLED = 0x02000000;
my $PKGS_BASE      = 0x04000000;
my $PKGS_UPGRADE   = 0x20000000;

#- package to ignore, typically in Application CD.
my %ignoreBadPkg = (
		    'civctp-demo'   => 1,
		    'eus-demo'      => 1,
		    'myth2-demo'    => 1,
		    'heretic2-demo' => 1,
		    'heroes3-demo'  => 1,
		    'rt2-demo'      => 1,
		   );

#- basic methods for extracting informations about packages.
#- to save memory, (name, version, release) are no more stored, they
#- are directly generated from (file).
#- all flags are grouped together into (flags), these includes the
#- following flags : selected, force, installed, base, skip.
#- size and deps are grouped to save memory too and make a much
#- simpler and faster depslist reader, this gets (sizeDeps).
sub packageHeaderFile   { $_[0] ? $_[0]->[$FILE]
			    : die "invalid package from\n" . backtrace() }
sub packageName         { $_[0] && $_[0]->[$FILE] =~ /^([^:\s]*)-[^:\-\s]+-[^:\-\s]+\.[^:\.\-\s]*(?::.*)?/ ? $1
			    : die "invalid file `" . ($_[0] && $_[0]->[$FILE]) . "'\n" . backtrace() }
sub packageVersion      { $_[0] && $_[0]->[$FILE] =~ /^[^:\s]*-([^:\-\s]+)-[^:\-\s]+\.[^:\.\-\s]*(?::.*)?/ ? $1
			    : die "invalid file `" . ($_[0] && $_[0]->[$FILE]) . "'\n" . backtrace() }
sub packageRelease      { $_[0] && $_[0]->[$FILE] =~ /^[^:\s]*-[^:\-\s]+-([^:\-\s]+)\.[^:\.\-\s]*(?::.*)?/ ? $1
			    : die "invalid file `" . ($_[0] && $_[0]->[$FILE]) . "'\n" . backtrace() }
sub packageArch         { $_[0] && $_[0]->[$FILE] =~ /^[^:\s]*-[^:\-\s]+-[^:\-\s]+\.([^:\.\-\s]*)(?::.*)?/ ? $1
			    : die "invalid file `" . ($_[0] && $_[0]->[$FILE]) . "'\n" . backtrace() }
sub packageFile         { $_[0] && $_[0]->[$FILE] =~ /^([^:\s]*-[^:\-\s]+-[^:\-\s]+\.[^:\.\-\s]*)(?::(.*))?/ ? ($2 || $1) . ".rpm"
			    : die "invalid file `" . ($_[0] && $_[0]->[$FILE]) . "'\n" . backtrace() }
sub packageEpoch        { $_[0] && $_[0]->[$EPOCH] || 0 }

sub packageSize   { to_int($_[0] && $_[0]->[$SIZE_DEPS]) }
sub packageDepsId { split ' ', ($_[0] && ($_[0]->[$SIZE_DEPS] =~ /^\d*\s*(.*)/)[0]) }

sub packageFlagSelected  { $_[0] && $_[0]->[$FLAGS] & $PKGS_SELECTED }
sub packageFlagForce     { $_[0] && $_[0]->[$FLAGS] & $PKGS_FORCE }
sub packageFlagInstalled { $_[0] && $_[0]->[$FLAGS] & $PKGS_INSTALLED }
sub packageFlagBase      { $_[0] && $_[0]->[$FLAGS] & $PKGS_BASE }
sub packageFlagUpgrade   { $_[0] && $_[0]->[$FLAGS] & $PKGS_UPGRADE }

sub packageSetFlagSelected  { $_[0]->[$FLAGS] &= ~$PKGS_SELECTED; $_[0]->[$FLAGS] |= $_[1] & $PKGS_SELECTED; }

sub packageSetFlagForce     { $_[0] or die "invalid package from\n" . backtrace();
			      $_[1] ? ($_[0]->[$FLAGS] |= $PKGS_FORCE)     : ($_[0]->[$FLAGS] &= ~$PKGS_FORCE); }
sub packageSetFlagInstalled { $_[0] or die "invalid package from\n" . backtrace();
			      $_[1] ? ($_[0]->[$FLAGS] |= $PKGS_INSTALLED) : ($_[0]->[$FLAGS] &= ~$PKGS_INSTALLED); }
sub packageSetFlagBase      { $_[0] or die "invalid package from\n" . backtrace();
			      $_[1] ? ($_[0]->[$FLAGS] |= $PKGS_BASE)      : ($_[0]->[$FLAGS] &= ~$PKGS_BASE); }
sub packageSetFlagUpgrade   { $_[0] or die "invalid package from\n" . backtrace();
			      $_[1] ? ($_[0]->[$FLAGS] |= $PKGS_UPGRADE)   : ($_[0]->[$FLAGS] &= ~$PKGS_UPGRADE); }

sub packageMedium { $_[0] or die "invalid package from\n" . backtrace();
		    $_[0]->[$MEDIUM] }

sub packageProvides { $_[1] or die "invalid package from\n" . backtrace();
		      map { $_[0]->{depslist}[$_] || die "unkown package id $_" } unpack "s*", $_[1]->[$PROVIDES] }

sub packageRate          { substr($_[0] && $_[0]->[$VALUES], 0, 1) }
sub packageRateRFlags    { my ($rate, @flags) = split "\t", $_[0] && $_[0]->[$VALUES]; ($rate, @flags) }
sub packageSetRateRFlags { my ($pkg, $rate, @flags) = @_; $pkg or die "invalid package from\n" . backtrace();
			   $pkg->[$VALUES] = join("\t", $rate, @flags) }

sub packageHeader     { $_[0] && $_[0]->[$HEADER] }
sub packageFreeHeader { $_[0] && c::headerFree(delete $_[0]->[$HEADER]) }

sub packageSelectedOrInstalled { packageFlagSelected($_[0]) || packageFlagInstalled($_[0]) }

sub packageId {
    my ($packages, $pkg) = @_;
    my $i = 0;
    foreach (@{$packages->{depslist}}) { return $i if $pkg == $packages->{depslist}[$i]; $i++ }
    return;
}

sub cleanHeaders {
    my ($prefix) = @_;
    rm_rf("$prefix/tmp/headers") if -e "$prefix/tmp/headers";
}

#- get all headers from an hdlist file.
sub extractHeaders($$$) {
    my ($prefix, $pkgs, $medium) = @_;

    cleanHeaders($prefix);

    eval {
	require packdrake;
	my $packer = new packdrake("/tmp/$medium->{hdlist}", quiet => 1);
	$packer->extract_archive("$prefix/tmp/headers", map { packageHeaderFile($_) } @$pkgs);
    };

    foreach (@$pkgs) {
	my $f = "$prefix/tmp/headers/". packageHeaderFile($_);
	local *H;
	open H, $f or log::l("unable to open header file $f: $!"), next;
	$_->[$HEADER] = c::headerRead(fileno H, 1) or log::l("unable to read header of package ". packageHeaderFile($_));
    }
    @$pkgs = grep { $_->[$HEADER] } @$pkgs;
}

#- size and correction size functions for packages.
my $B = 1.20873;
my $C = 4.98663; #- doesn't take hdlist's into account as getAvailableSpace will do it.
sub correctSize { $B * $_[0] + $C }
sub invCorrectSize { ($_[0] - $C) / $B }

sub selectedSize {
    my ($packages) = @_;
    my $size = 0;
    foreach (values %{$packages->{names}}) {
	packageFlagSelected($_) && !packageFlagInstalled($_) and $size += packageSize($_) - ($_->[$INSTALLED_CUMUL_SIZE] || 0);
    }
    $size;
}
sub correctedSelectedSize { correctSize(selectedSize($_[0]) / sqr(1024)) }

sub size2time {
    my ($x, $max) = @_;
    my $A = 7e-07;
    my $limit = min($max * 3 / 4, 9e8);
    if ($x < $limit) {
	$A * $x;
    } else { 
	$x -= $limit;
	my $B = 6e-16;
	my $C = 15e-07;
	$B * $x ** 2 + $C * $x + $A * $limit;
    }
}


#- searching and grouping methods.
#- package is a reference to list that contains
#- a hash to search by name and
#- a list to search by id.
sub packageByName {
    my ($packages, $name) = @_;
    $packages->{names}{$name} or log::l("unknown package `$name'") && undef;
}
sub packageById {
    my ($packages, $id) = @_;
    my $l = $packages->{depslist}[$id]; #- do not log as id unsupported are still in depslist.
    $l && @$l && $l;
}
sub packagesOfMedium {
    my ($packages, $mediumName) = @_;
    my $medium = $packages->{mediums}{$mediumName};
    grep { $_ && $_->[$MEDIUM] == $medium } @{$packages->{depslist}};
}
sub packagesToInstall {
    my ($packages) = @_;
    grep { packageFlagSelected($_) && !packageFlagInstalled($_) && $_->[$MEDIUM]{selected} } values %{$packages->{names}};
}

sub allMediums {
    my ($packages) = @_;
    keys %{$packages->{mediums}};
}
sub mediumDescr {
    my ($packages, $medium) = @_;
    $packages->{mediums}{$medium}{descr};
}

#- selection, unselection of package.
sub selectPackage { #($$;$$$)
    my ($packages, $pkg, $base, $otherOnly, $check_recursion) = @_;

    #- check for medium selection, if the medium has not been
    #- selected, the package cannot be selected.
    #- check if the same or better version is installed,
    #- do not select in such case.
    $pkg && $pkg->[$MEDIUM]{selected} && !packageFlagInstalled($pkg) or return;

    #- avoid infinite recursion (mainly against badly generated depslist.ordered).
    $check_recursion ||= {}; exists $check_recursion->{$pkg->[$FILE]} and return; $check_recursion->{$pkg->[$FILE]} = undef;

    #- make sure base package are set even if already selected.
    $base and packageSetFlagBase($pkg, 1);

    #- select package and dependancies, otherOnly may be a reference
    #- to a hash to indicate package that will strictly be selected
    #- when value is true, may be selected when value is false (this
    #- is only used for unselection, not selection)
    unless (packageFlagSelected($pkg)) {
	foreach (packageDepsId($pkg)) {
	    if (/\|/) {
		#- choice deps should be reselected recursively as no
		#- closure on them is computed, this code is exactly the
		#- same as pixel's one.
		my $preferred;	    
		foreach (split '\|') {
		    my $dep = packageById($packages, $_) or next;
		    $preferred ||= $dep;
		    packageFlagSelected($dep) and $preferred = $dep, last;
		    exists $preferred{packageName($dep)} and $preferred = $dep;
		}
		$preferred or die "unable to find a package for choice";
		packageFlagSelected($preferred) or log::l("selecting default package as $preferred->[$FILE]");
		selectPackage($packages, $preferred, $base, $otherOnly, $check_recursion);
	    } else {
		#- deps have been closed except for choices, so no need to
		#- recursively apply selection, expand base on it.
		my $dep = packageById($packages, $_);
		$base and packageSetFlagBase($dep, 1);
		$otherOnly and !packageFlagSelected($dep) and $otherOnly->{packageName($dep)} = 1;
		$otherOnly or packageSetFlagSelected($dep, 1+packageFlagSelected($dep));
	    }
	}
    }
    $otherOnly and !packageFlagSelected($pkg) and $otherOnly->{packageName($pkg)} = 1;
    $otherOnly or packageSetFlagSelected($pkg, 1+packageFlagSelected($pkg));
    1;
}
sub unselectPackage($$;$) {
    my ($packages, $pkg, $otherOnly) = @_;

    #- base package are not unselectable,
    #- and already unselected package are no more unselectable.
    packageFlagBase($pkg) and return;
    packageFlagSelected($pkg) or return;

    #- dependancies may be used to propose package that may be not
    #- usefull for the user, since their counter is just one and
    #- they are not used any more by other packages.
    #- provides are closed and are taken into account to get possible
    #- unselection of package (value false on otherOnly) or strict
    #- unselection (value true on otherOnly).
    foreach my $provided ($pkg, packageProvides($packages, $pkg)) {
	packageFlagBase($provided) and die "a provided package cannot be a base package";
	if (packageFlagSelected($provided)) {
	    my $unselect_alone = 1;
	    foreach (packageDepsId($provided)) {
		$unselect_alone = 0;
		if (/\|/) {
		    #- this package use a choice of other package, so we have to check
		    #- if our package is not included in the choice, if this is the
		    #- case, if must be checked one of the other package are selected.
		    foreach (split '\|') {
			my $dep = packageById($packages, $_) or next;
			$dep == $pkg and $unselect_alone |= 1 and next;
			packageFlagBase($dep) || packageFlagSelected($dep) and $unselect_alone |= 2;
		    }
		} else {
		    packageById($packages, $_) == $pkg and $unselect_alone = 1;
		}
		$unselect_alone == 1 and last;
	    }
	    #- if package has been found and nothing more selected,
	    #- deselect the provided, or we can ignore it safely.
	    $provided == $pkg || $unselect_alone == 1 or next;
	    $otherOnly or packageSetFlagSelected($provided, 0);
	    $otherOnly and $otherOnly->{packageName($provided)} = 1;
	}
	foreach (map { split '\|' } packageDepsId($provided)) {
	    my $dep = packageById($packages, $_) or next;
	    packageFlagBase($dep) and next;
	    packageFlagSelected($dep) or next;
	    for (packageFlagSelected($dep)) {
		$_ == 1 and do { $otherOnly and $otherOnly->{packageName($dep)} ||= 0; };
		$_ >  1 and do { $otherOnly or packageSetFlagSelected($dep, $_-1); };
		last;
	    }
	}
    }
    1;
}
sub togglePackageSelection($$;$) {
    my ($packages, $pkg, $otherOnly) = @_;
    packageFlagSelected($pkg) ? unselectPackage($packages, $pkg, $otherOnly) : selectPackage($packages, $pkg, 0, $otherOnly);
}
sub setPackageSelection($$$) {
    my ($packages, $pkg, $value) = @_;
    $value ? selectPackage($packages, $pkg) : unselectPackage($packages, $pkg);
}

sub unselectAllPackages($) {
    my ($packages) = @_;
    foreach (values %{$packages->{names}}) {
	unless (packageFlagBase($_) || packageFlagUpgrade($_)) {
	    packageSetFlagSelected($_, 0);
	}
    }
}
sub unselectAllPackagesIncludingUpgradable($) {
    my ($packages, $removeUpgradeFlag) = @_;
    foreach (values %{$packages->{names}}) {
	unless (packageFlagBase($_)) {
	    packageSetFlagSelected($_, 0);
	    packageSetFlagUpgrade($_, 0);
	}
    }
}

sub psUpdateHdlistsDeps {
    my ($prefix, $method) = @_;
    my $listf = install_any::getFile('Mandrake/base/hdlists') or die "no hdlists found";

    #- WARNING: this function should be kept in sync with functions
    #- psUsingHdlists and psUsingHdlist.
    #- it purpose it to update hdlist files on system to install.

    #- parse hdlist.list file.
    my $medium = 1;
    foreach (<$listf>) {
	chomp;
	s/\s*#.*$//;
	/^\s*$/ and next;
	m/^\s*(hdlist\S*\.cz2?)\s+(\S+)\s*(.*)$/ or die "invalid hdlist description \"$_\" in hdlists file";
	my ($hdlist, $rpmsdir, $descr) = ($1, $2, $3);

	#- copy hdlist file directly to $prefix/var/lib/urpmi, this will be used
	#- for getting header of package during installation or after by urpmi.
	my $fakemedium = "$descr ($method$medium)";
	my $newf = "$prefix/var/lib/urpmi/hdlist.$fakemedium.cz" . ($hdlist =~ /\.cz2/ && "2");
	-e $newf and do { unlink $newf or die "cannot remove $newf: $!"; };
	install_any::getAndSaveFile("Mandrake/base/$hdlist", $newf) or die "no $hdlist found";
	symlinkf $newf, "/tmp/$hdlist";
	++$medium;
    }

    #- this is necessary for urpmi.
    install_any::getAndSaveFile("Mandrake/base/$_", "$prefix/var/lib/urpmi/$_")
      foreach qw(depslist.ordered provides rpmsrate);
}

sub psUsingHdlists {
    my ($prefix, $method) = @_;
    my $listf = install_any::getFile('Mandrake/base/hdlists') or die "no hdlists found";
    my %packages = ( names => {}, count => 0, depslist => [], mediums => {});

    #- parse hdlists file.
    my $medium = 1;
    foreach (<$listf>) {
	chomp;
	s/\s*#.*$//;
	/^\s*$/ and next;
	m/^\s*(hdlist\S*\.cz2?)\s+(\S+)\s*(.*)$/ or die "invalid hdlist description \"$_\" in hdlists file";

	#- make sure the first medium is always selected!
	#- by default select all image.
	psUsingHdlist($prefix, $method, \%packages, $1, $medium, $2, $3, 1);

	++$medium;
    }

    log::l("psUsingHdlists read " . scalar keys(%{$packages{names}}) .
	   " headers on " . scalar keys(%{$packages{mediums}}) . " hdlists");

    \%packages;
}

sub psUsingHdlist {
    my ($prefix, $method, $packages, $hdlist, $medium, $rpmsdir, $descr, $selected, $fhdlist) = @_;
    my $fakemedium = "$descr ($method$medium)";
    log::l("trying to read $hdlist for medium $medium");

    #- if the medium already exist, use it.
    $packages->{mediums}{$medium} and return;

    my $m = $packages->{mediums}{$medium} = { hdlist     => $hdlist,
					      method     => $method,
					      medium     => $medium,
					      rpmsdir    => $rpmsdir, #- where is RPMS directory.
					      descr      => $descr,
					      fakemedium => $fakemedium,
					      min        => $packages->{count},
					      max        => -1, #- will be updated after reading current hdlist.
					      selected   => $selected, #- default value is only CD1, it is really the minimal.
					    };

    #- copy hdlist file directly to $prefix/var/lib/urpmi, this will be used
    #- for getting header of package during installation or after by urpmi.
    my $newf = "$prefix/var/lib/urpmi/hdlist.$fakemedium.cz" . ($hdlist =~ /\.cz2/ && "2");
    -e $newf and do { unlink $newf or die "cannot remove $newf: $!"; };
    install_any::getAndSaveFile($fhdlist || "Mandrake/base/$hdlist", $newf) or die "no $hdlist found";
    symlinkf $newf, "/tmp/$hdlist";

    #- avoid using more than one medium if Cd is not ejectable.
    #- but keep all medium here so that urpmi has the whole set.
    $method eq 'cdrom' && $medium > 1 && !common::usingRamdisk() and return;

    #- extract filename from archive, this take advantage of verifying
    #- the archive too.
    eval {
	require packdrake;
	my $packer = new packdrake($newf, quiet => 1);
	foreach (@{$packer->{files}}) {
	    $packer->{data}{$_}[0] eq 'f' or next;
	    ++$packages->{count}; #- take care of this one, so that desplist will be clean with index of package.
	    my $pkg = [ (undef) x 8 ]; $pkg->[$FILE] = $_; $pkg->[$MEDIUM] = $m;
	    my $specific_arch = packageArch($pkg);
	    if (!$specific_arch || MDK::Common::System::compat_arch($specific_arch)) {
		my $old_pkg = $packages->{names}{packageName($pkg)};
		if ($old_pkg) {
		    if (packageVersion($pkg) eq packageVersion($old_pkg) && packageRelease($pkg) eq packageRelease($old_pkg)) {
			if (MDK::Common::System::better_arch($specific_arch, packageArch($old_pkg))) {
			    log::l("replacing old package with package $_ with better arch: $specific_arch");
			    $packages->{names}{packageName($pkg)} = $pkg;
			} else {
			    log::l("keeping old package against package $_ with worse arch");
			}
		    } else {
		        log::l("ignoring package $_ already present in distribution with different version or release");
		    }
		} else {
		    $packages->{names}{packageName($pkg)} = $pkg;
		}
	    } else {
	        log::l("ignoring package $_ with incompatible arch: $specific_arch");
	    }
	}
    };

    #- update maximal index.
    $m->{max} = $packages->{count} - 1;
    $m->{max} >= $m->{min} or die "nothing found while parsing $newf";
    log::l("read " . ($m->{max} - $m->{min} + 1) . " headers in $hdlist");
    1;
}

sub getOtherDeps($$) {
    my ($packages, $f) = @_;

    #- this version of getDeps is customized for handling errors more easily and
    #- convert reference by name to deps id including closure computation.
    local $_;
    while (<$f>) {
	my ($name, $version, $release, $size, $deps) = /^(\S*)-([^-\s]+)-([^-\s]+)\s+(\d+)\s+(.*)/;
	my $pkg = $packages->{names}{$name};

	$pkg or log::l("ignoring package $name-$version-$release in depslist is not in hdlist"), next;
	$version eq packageVersion($pkg) and $release eq packageRelease($pkg)
	  or log::l("warning package $name-$version-$release in depslist mismatch version or release in hdlist ($version ne ",
		    packageVersion($pkg), " or $release ne ", packageRelease($pkg), ")"), next;

	my $index = scalar @{$packages->{depslist}};
	$index >= $pkg->[$MEDIUM]{min} && $index <= $pkg->[$MEDIUM]{max}
	  or log::l("ignoring package $name-$version-$release in depslist outside of hdlist indexation");

	#- here we have to translate referenced deps by name to id.
	#- this include a closure on deps too.
	my %closuredeps;
	@closuredeps{map { packageId($packages, $_), packageDepsId($_) }
		       grep { $_ }
			 map { packageByName($packages, $_) or do { log::l("unknown package $_ in depslist for closure"); undef } }
			   split /\s+/, $deps} = ();

	$pkg->[$SIZE_DEPS] = join " ", $size, keys %closuredeps;

	push @{$packages->{depslist}}, $pkg;
    }

    #- check for same number of package in depslist and hdlists, avoid being to hard.
    scalar(keys %{$packages->{names}}) == scalar(@{$packages->{depslist}})
      or log::l("other depslist has not same package as hdlist file");
}

sub getDeps {
    my ($prefix, $packages) = @_;

    #- this is necessary for urpmi.
    install_any::getAndSaveFile('Mandrake/base/depslist.ordered', "$prefix/var/lib/urpmi/depslist.ordered");
    install_any::getAndSaveFile('Mandrake/base/provides', "$prefix/var/lib/urpmi/provides");

    #- beware of heavily mismatching depslist.ordered file against hdlist files.
    my $mismatch = 0;

    #- count the number of packages in deplist that are also in hdlist
    my $nb_deplist = 0;

    #- update dependencies list, provides attributes are updated later
    #- cross reference to be resolved on id (think of loop requires)
    #- provides should be updated after base flag has been set to save
    #- memory.
    local *F; open F, "$prefix/var/lib/urpmi/depslist.ordered" or die "can't find dependancies list";
    local $_;
    while (<F>) {
	my ($name, $version, $release, $arch, $epoch, $sizeDeps) =
	  /^([^:\s]*)-([^:\-\s]+)-([^:\-\s]+)\.([^:\.\-\s]*)(?::(\d+)\S*)?\s+(.*)/;
	my $pkg = $packages->{names}{$name};

	#- these verification are necessary in case of error, but are no more fatal as
	#- in case of only one medium taken into account during install, there should be
	#- silent warning for package which are unknown at this point.
	$pkg or
	  log::l("ignoring $name-$version-$release.$arch in depslist is not in hdlist");
	$pkg && $version ne packageVersion($pkg) and
	  log::l("ignoring $name-$version-$release.$arch in depslist mismatch version in hdlist"), $pkg = undef;
	$pkg && $release ne packageRelease($pkg) and
	  log::l("ignoring $name-$version-$release.$arch in depslist mismatch release in hdlist"), $pkg = undef;
	$pkg && $arch ne packageArch($pkg) and
	  log::l("ignoring $name-$version-$release.$arch in depslist mismatch arch in hdlist"), $pkg = undef;

	if ($pkg) {
	    $nb_deplist++;
	    $epoch && $epoch > 0 and $pkg->[$EPOCH] = $epoch; #- only 5% of the distribution use epoch (serial).
	    $pkg->[$SIZE_DEPS] = $sizeDeps;

	    #- check position of package in depslist according to precomputed
	    #- limit by hdlist, very strict :-)
	    #- above warning have chance to raise an exception here, but may help
	    #- for debugging.
	    my $i = scalar @{$packages->{depslist}};
	    $i >= $pkg->[$MEDIUM]{min} && $i <= $pkg->[$MEDIUM]{max} or
	      log::l("inconsistency in position for $name-$version-$release.$arch in depslist and hdlist"), $mismatch = 1;
	}

	#- package are already sorted in depslist to enable small transaction and multiple medium.
	push @{$packages->{depslist}}, $pkg;
    }

    #- check for mismatching package, it should break with above die unless depslist has too many errors!
    $mismatch and die "depslist.ordered mismatch against hdlist files";

    #- check for same number of package in depslist and hdlists.
    my $nb_hdlist = keys %{$packages->{names}};
    $nb_hdlist == $nb_deplist or die "depslist.ordered has not same package as hdlist files ($nb_deplist != $nb_hdlist)";
}

sub getProvides($) {
    my ($packages) = @_;

    #- update provides according to dependencies, here are stored
    #- reference to package directly and choice are included, this
    #- assume only 1 of the choice is selected, else on unselection
    #- the provided package will be deleted where other package still
    #- need it.
    #- base package are not updated because they cannot be unselected,
    #- this save certainly a lot of memory since most of them may be
    #- needed by a large number of package.
    #- now using a packed of signed short, this means no more than 32768
    #- packages can be managed by DrakX (currently about 2000).
    my $i = 0;
    foreach my $pkg (@{$packages->{depslist}}) {
	$pkg or next;
	unless (packageFlagBase($pkg)) {
	    foreach (map { split '\|' } grep { !/^NOTFOUND_/ } packageDepsId($pkg)) {
		my $provided = packageById($packages, $_) or next;
		packageFlagBase($provided) or $provided->[$PROVIDES] = pack "s*", (unpack "s*", $provided->[$PROVIDES]), $i;
	    }
	}
	++$i;
    }
}

sub read_rpmsrate {
    my ($packages, $f) = @_;
    my $line_nb = 0;
    my $fatal_error;
    my (@l);
    while (<$f>) {
	$line_nb++;
	/\t/ and die "tabulations not allowed at line $line_nb\n";
	s/#.*//; # comments

	my ($indent, $data) = /(\s*)(.*)/;
	next if !$data; # skip empty lines

	@l = grep { $_->[0] < length $indent } @l;

	my @m = @l ? @{$l[$#l][1]} : ();
	my ($t, $flag, @l2);
	while ($data =~ 
	       /^((
                   [1-5]
                   |
                   (?:            (?: !\s*)? [0-9A-Z_]+(?:".*?")?)
                   (?: \s*\|\|\s* (?: !\s*)? [0-9A-Z_]+(?:".*?")?)*
                  )
                  (?:\s+|$)
                 )(.*)/x) { #@")) {
	    ($t, $flag, $data) = ($1,$2,$3);
	    while ($flag =~ s,^\s*(("[^"]*"|[^"\s]*)*)\s+,$1,) {}
	    my $ok = 0;
	    $flag = join('||', grep { 
		if (my ($inv, $p) = /^(!)?HW"(.*)"/) {
		    ($inv xor detect_devices::matching_desc($p)) and $ok = 1;
		    0;
		} else {
		    1;
		}
	    } split '\|\|', $flag);
	    push @m, $ok ? 'TRUE' : $flag || 'FALSE';
	    push @l2, [ length $indent, [ @m ] ];
	    $indent .= $t;
	}
	if ($data) {
	    # has packages on same line
	    my ($rate) = grep { /^\d$/ } @m or die sprintf qq(missing rate for "%s" at line %d (flags are %s)\n), $data, $line_nb, join('&&', @m);
	    foreach (split ' ', $data) {
		if ($packages) {
		    my $p = packageByName($packages, $_) or next;
		    
		    my @m2 = 
		      map { if_($_ && packageName($_) =~ /locales-(.*)/, qq(LOCALES"$1")) }
		      map { packageById($packages, $_) } packageDepsId($p);

		    my @m3 = ((grep { !/^\d$/ } @m), @m2);
		    if (packageRate($p)) {
			next if @m3 == 1 && $m3[0] eq 'INSTALL';

			my ($rate2, @m4) = packageRateRFlags($p);
			if (@m3 > 1 || @m4 > 1) {
			    log::l("can't handle complicate flags for packages appearing twice ($_)");
			    $fatal_error++;
			}
			log::l("package $_ appearing twice with different rates ($rate != $rate2)") if $rate != $rate2;
			packageSetRateRFlags($p, $rate, "$m3[0]||$m4[0]");
		    } else {
			packageSetRateRFlags($p, $rate, @m3);
		    }
		} else {
		    print "$_ = ", join(" && ", @m), "\n";
		}
	    }
	    push @l, @l2;
	} else {
	    push @l, [ $l2[0][0], $l2[$#l2][1] ];
	}
    }
    $fatal_error and die "$fatal_error fatal errors in rpmsrate";
}

sub readCompssUsers {
    my ($meta_class) = @_;
    my (%compssUsers, @sorted, $l);

    my $file = 'Mandrake/base/compssUsers';
    my $f = $meta_class && install_any::getFile("$file.$meta_class") || install_any::getFile($file) or die "can't find $file";
    local $_;
    while (<$f>) {
	/^\s*$/ || /^#/ and next;
	s/#.*//;

	if (/^(\S.*)/) {
	    my $verbatim = $_;
	    my ($icon, $descr, $path);
	    /^(.*?)\s*\[path=(.*?)\](.*)/  and $_ = "$1$3", $path  = $2;
	    /^(.*?)\s*\[icon=(.*?)\](.*)/  and $_ = "$1$3", $icon  = $2;
	    /^(.*?)\s*\[descr=(.*?)\](.*)/ and $_ = "$1$3", $descr = $2;
	    $compssUsers{"$path|$_"} = { label => $_, verbatim => $verbatim, path => $path, icons => $icon, descr => $descr, flags => $l=[] };
	    push @sorted, "$path|$_";
	} elsif (/^\s+(.*?)\s*$/) {
	    push @$l, $1;
	}
    }
    \%compssUsers, \@sorted;
}
sub saveCompssUsers {
    my ($prefix, $packages, $compssUsers, $sorted) = @_;
    my $flat;
    foreach (@$sorted) {
	my @fl = @{$compssUsers->{$_}{flags}};
	my %fl; $fl{$_} = 1 foreach @fl;
	$flat .= $compssUsers->{$_}{verbatim};
	foreach my $p (values %{$packages->{names}}) {
	    my ($rate, @flags) = packageRateRFlags($p);
	    if ($rate && grep { grep { !/^!/ && $fl{$_} } split('\|\|') } @flags) {
		$flat .= sprintf "\t%d %s\n", $rate, packageName($p);
	    }
	}
    }
    output "$prefix/var/lib/urpmi/compssUsers.flat", $flat;
}

sub setSelectedFromCompssList {
    my ($packages, $compssUsersChoice, $min_level, $max_size) = @_;
    $compssUsersChoice->{TRUE} = 1; #- ensure TRUE is set
    my $nb = selectedSize($packages);
    foreach my $p (sort { packageRate($b) <=> packageRate($a) } values %{$packages->{names}}) {
	my ($rate, @flags) = packageRateRFlags($p);
	next if 
	  !$rate || $rate < $min_level || 
	  grep { !grep { /^!(.*)/ ? !$compssUsersChoice->{$1} : $compssUsersChoice->{$_} } split('\|\|') } @flags;

	#- determine the packages that will be selected when
	#- selecting $p. the packages are not selected.
	my %newSelection;
	selectPackage($packages, $p, 0, \%newSelection);

	#- this enable an incremental total size.
	my $old_nb = $nb;
	foreach (grep { $newSelection{$_} } keys %newSelection) {
	    $nb += packageSize($packages->{names}{$_});
	}
	if ($max_size && $nb > $max_size) {
	    $nb = $old_nb;
	    $min_level = packageRate($p);
	    last;
	}

	#- at this point the package can safely be selected.
	selectPackage($packages, $p);
    }
    log::l("setSelectedFromCompssList: reached size ", formatXiB($nb), ", up to indice $min_level (less than ", formatXiB($max_size), ")");
    log::l("setSelectedFromCompssList: ", join(" ", sort map { packageName($_) } grep { packageFlagSelected($_) } @{$packages->{depslist}}));
    $min_level;
}

#- usefull to know the size it would take for a given min_level/max_size
#- just saves the selected packages, call setSelectedFromCompssList and restores the selected packages
sub saveSelected {
    my ($packages) = @_;
    my @l = values %{$packages->{names}};
    my @flags = map { packageFlagSelected($_) } @l;
    [ $packages, \@l, \@flags ];
}
sub restoreSelected {
    my ($packages, $l, $flags) = @{$_[0]};
    mapn { packageSetFlagSelected(@_) } $l, $flags;
}

sub computeGroupSize {
    my ($packages, $min_level) = @_;

    sub inside {
	my ($l1, $l2) = @_;
	my $i = 0;
	return if @$l1 > @$l2;
	foreach (@$l1) {
	    my $c;
	    while ($c = $l2->[$i++] cmp $_ ) {
		return if $c == 1 || $i > @$l2;
	    }
	}
	1;
    }

    sub or_ify {
	my ($first, @other) = @_;
	my @l = split('\|\|', $first);
	foreach (@other) {
	    @l = map {
		my $n = $_;
		map { "$_&&$n" } @l;
	    } split('\|\|');
	}
	#- HACK, remove LOCALES & CHARSET, too costly
	grep { !/LOCALES|CHARSET/ } @l;
    }
    sub or_clean {
	my (@l) = map { [ sort split('&&') ] } @_ or return '';
	my @r;
	B: while (@l) {
	    my $e = shift @l;
	    foreach (@r, @l) {
		inside($e, $_) and next B;
	    }
	    push @r, $e;
	}
	join("\t", map { join('&&', @$_) } @r);
    }
    my (%group, %memo);

    foreach my $p (values %{$packages->{names}}) {
	my ($rate, @flags) = packageRateRFlags($p);
	next if !$rate || $rate < $min_level;

	my $flags = join("\t", @flags = or_ify(@flags));
	$group{packageName($p)} = ($memo{$flags} ||= or_clean(@flags));

	#- determine the packages that will be selected when selecting $p. the packages are not selected.
	my %newSelection;
	selectPackage($packages, $p, 0, \%newSelection);
	foreach (grep { $newSelection{$_} } keys %newSelection) {
	    my $s = $group{$_} || do {
		$packages->{names}{$_}[$VALUES] =~ /\t(.*)/;
		join("\t", or_ify(split("\t", $1)));
	    };
	    next if length($s) > 80; # HACK, truncated too complicated expressions, too costly
	    my $m = "$flags\t$s";
	    $group{$_} = ($memo{$m} ||= or_clean(@flags, split("\t", $s)));
	}
    }
    my (%sizes, %pkgs);
    while (my ($k, $v) = each %group) {
	push @{$pkgs{$v}}, $k;
	$sizes{$v} += packageSize($packages->{names}{$k});
    }
    log::l(sprintf "%s %dMB %s", $_, $sizes{$_} / sqr(1024), join(',', @{$pkgs{$_}})) foreach keys %sizes;
    \%sizes, \%pkgs;
}


sub init_db {
    my ($prefix) = @_;

    my $f = "$prefix/root/install.log";
    open(LOG, ">> $f") ? log::l("opened $f") : log::l("Failed to open $f. No install log will be kept.");
    *LOG or *LOG = log::F() or *LOG = *STDERR;
    CORE::select((CORE::select(LOG), $| = 1)[0]);
    c::rpmErrorSetCallback(fileno LOG);
#-    c::rpmSetVeryVerbose();

    log::l("reading /usr/lib/rpm/rpmrc");
    c::rpmReadConfigFiles() or die "can't read rpm config files";
    log::l("\tdone");
}

sub rebuild_db_open_for_traversal {
    my ($packages, $prefix) = @_;

    log::l("reading /usr/lib/rpm/rpmrc");
    c::rpmReadConfigFiles() or die "can't read rpm config files";
    log::l("\tdone");

    unless (exists $packages->{rebuild_db}) {
	if (my $pid = fork()) {
	    waitpid $pid, 0;
	    ($? & 0xff00) and die "rebuilding of rpm database failed";
	} else {
	    log::l("rebuilding rpm database");
	    my $rebuilddb_dir = "$prefix/var/lib/rpmrebuilddb.$$";
	    -d $rebuilddb_dir and log::l("removing stale directory $rebuilddb_dir"), rm_rf($rebuilddb_dir);

	    c::rpmdbRebuild($prefix) or log::l("rebuilding of rpm database failed: ". c::rpmErrorString()), c::_exit(2);

	    c::_exit(0);
	}
	$packages->{rebuild_db} = undef;
    }

    my $db = c::rpmdbOpenForTraversal($prefix) or die "unable to open $prefix/var/lib/rpm/Packages";
    log::l("opened rpm database for examining existing packages");

    $db;
}

sub clean_old_rpm_db {
    my ($prefix) = @_;
    my $failed;

    foreach (qw(Basenames Conflictname Group Name Packages Providename Requirename Triggername)) {
	-s "$prefix/var/lib/rpm/$_" or $failed = 'failed';
    }
    #- rebuilding has been successfull, so remove old rpm database if any.
    #- once we have checked the rpm4 db file are present and not null, in case
    #- of doubt, avoid removing them...
    unless ($failed) {
	log::l("rebuilding rpm database completed successfully");
	foreach (qw(conflictsindex.rpm fileindex.rpm groupindex.rpm nameindex.rpm packages.rpm
                    providesindex.rpm requiredby.rpm triggerindex.rpm)) {
	    -e "$prefix/var/lib/rpm/$_" or next;
	    log::l("removing old rpm file $_");
	    rm_rf("$prefix/var/lib/rpm/$_");
	}
    }
}

sub done_db {
    log::l("closing install.log file");
    close LOG;
}

sub versionCompare($$) {
    my ($a, $b) = @_;
    local $_;

    while ($a || $b) {
	my ($sb, $sa) =  map { $1 if $a =~ /^\W*\d/ ? s/^\W*0*(\d+)// : s/^\W*(\D*)// } ($b, $a);
	$_ = ($sa =~ /^\d/ || $sb =~ /^\d/) && length($sa) <=> length($sb) || $sa cmp $sb and return $_ || 0;
	$sa eq '' && $sb eq '' and return $a cmp $b || 0;
    }
}

sub selectPackagesAlreadyInstalled {
    my ($packages, $prefix) = @_;

    #- avoid rebuilding the database if such case.
    $packages->{rebuild_db} = "oem does not need rebuilding the rpm db";
    my $db = rebuild_db_open_for_traversal($packages, $prefix);

    #- this method has only one objectif, check the presence of packages
    #- already installed and avoid installing them again. this is to be used
    #- with oem installation, if the database exists, preselect the packages
    #- installed WHATEVER their version/release (log if a problem is perceived
    #- is enough).
    c::rpmdbTraverse($db, sub {
			 my ($header) = @_;
			 my $p = $packages->{names}{c::headerGetEntry($header, 'name')};

			 if ($p) {
			     my $epoch_cmp = c::headerGetEntry($header, 'epoch') <=> packageEpoch($p);
			     my $version_cmp = $epoch_cmp == 0 && versionCompare(c::headerGetEntry($header, 'version'),
										 packageVersion($p));
			     my $version_rel_test = $epoch_cmp > 0 || $epoch_cmp == 0 &&
			       ($version_cmp > 0 || $version_cmp == 0 &&
				versionCompare(c::headerGetEntry($header, 'release'), packageRelease($p)) >= 0);
			     $version_rel_test or log::l("keeping an older package, avoiding selecting $p->[$FILE]");
			     packageSetFlagInstalled($p, 1);
			 }
		     });

    #- close db, job finished !
    c::rpmdbClose($db);
    log::l("done selecting packages to upgrade");
}

sub selectPackagesToUpgrade($$$;$$) {
    my ($packages, $prefix, $base, $toRemove, $toSave) = @_;
    local $_; #- else perl complains on the map { ... } grep { ... } @...;

    local (*UPGRADE_INPUT, *UPGRADE_OUTPUT); pipe UPGRADE_INPUT, UPGRADE_OUTPUT;
    if (my $pid = fork()) {
	@{$toRemove || []} = (); #- reset this one.

	close UPGRADE_OUTPUT;
	while (<UPGRADE_INPUT>) {
	    chomp;
	    my ($action, $name) = /^([\w\d]*):(.*)/;
	    for ($action) {
		/remove/    and do { push @$toRemove, $name; next };
		/keepfiles/ and do { push @$toSave, $name; next };

		my $p = $packages->{names}{$name} or die "unable to find package ($name)";
		/^\d*$/     and do { $p->[$INSTALLED_CUMUL_SIZE] = $action; next };
		/installed/ and do { packageSetFlagInstalled($p, 1); next };
		/select/    and do { selectPackage($packages, $p); next };

		die "unknown action ($action)";
	    }
	}
	close UPGRADE_INPUT;
	waitpid $pid, 0;
    } else {
	close UPGRADE_INPUT;
	
	my $db = rebuild_db_open_for_traversal($packages, $prefix);
	#- used for package that are not correctly updated.
	#- should only be used when nothing else can be done correctly.
	my %upgradeNeedRemove = (
				 'libstdc++' => 1,
				 'compat-glibc' => 1,
				 'compat-libs' => 1,
				);

	#- generel purpose for forcing upgrade of package whatever version is.
	my %packageNeedUpgrade = (
				  #'lilo' => 1, #- this package has been misnamed in 7.0.
				 );

	#- help removing package which may have different release numbering
	my %toRemove; map { $toRemove{$_} = 1 } @{$toRemove || []};

	#- help searching package to upgrade in regard to already installed files.
	my %installedFilesForUpgrade;

	#- help keeping memory by this set of package that have been obsoleted.
	my %obsoletedPackages;

	#- make a subprocess here for reading filelist, this is important
	#- not to waste a lot of memory for the main program which will fork
	#- latter for each transaction.
	local (*INPUT, *OUTPUT_CHILD); pipe INPUT, OUTPUT_CHILD;
	local (*INPUT_CHILD, *OUTPUT); pipe INPUT_CHILD, OUTPUT;
	if (my $pid = fork()) {
	    close INPUT_CHILD;
	    close OUTPUT_CHILD;
	    select((select(OUTPUT), $| = 1)[0]);

	    #- internal reading from interactive mode of parsehdlist.
	    #- takes a code to call with the line read, this avoid allocating
	    #- memory for that.
	    my $ask_child = sub {
		my ($name, $tag, $code) = @_;
		$code or die "no callback code for parsehdlist output";
		print OUTPUT "$name:$tag\n";

		local $_;
		while (<INPUT>) {
		    chomp;
		    /^\s*$/ and last;
		    $code->($_);
		}
	    };

	    #- select packages which obseletes other package, obselete package are not removed,
	    #- should we remove them ? this could be dangerous !
	    foreach my $p (values %{$packages->{names}}) {
		$ask_child->(packageName($p), "obsoletes", sub {
				 #- take care of flags and version and release if present
				 if ($_[0] =~ /^(\S*)\s*(\S*)\s*([^\s-]*)-?(\S*)/ && c::rpmdbNameTraverse($db, $1) > 0) {
				     $3 and eval(versionCompare(packageVersion($p), $3) . $2 . 0) or next;
				     $4 and eval(versionCompare(packageRelease($p), $4) . $2 . 0) or next;
				     log::l("selecting " . packageName($p) . " by selection on obsoletes");
				     $obsoletedPackages{$1} = undef;
				     selectPackage($packages, $p);
				 }
			     });
	    }

	    #- mark all files which are not in /etc/rc.d/ for packages which are already installed but which
	    #- are not in the packages list to upgrade.
	    #- the 'installed' property will make a package unable to be selected, look at select.
	    c::rpmdbTraverse($db, sub {
				 my ($header) = @_;
				 my $otherPackage = (c::headerGetEntry($header, 'release') !~ /mdk\w*$/ &&
						     (c::headerGetEntry($header, 'name'). '-' .
						      c::headerGetEntry($header, 'version'). '-' .
						      c::headerGetEntry($header, 'release')));
				 my $p = $packages->{names}{c::headerGetEntry($header, 'name')};

				 if ($p) {
				     my $epoch_cmp = c::headerGetEntry($header, 'epoch') <=> packageEpoch($p);
				     my $version_cmp = $epoch_cmp == 0 && versionCompare(c::headerGetEntry($header, 'version'),
											 packageVersion($p));
				     my $version_rel_test = $epoch_cmp > 0 || $epoch_cmp == 0 &&
				       ($version_cmp > 0 || $version_cmp == 0 &&
					versionCompare(c::headerGetEntry($header, 'release'), packageRelease($p)) >= 0);
				     if ($packageNeedUpgrade{packageName($p)}) {
					 log::l("package ". packageName($p) ." need to be upgraded");
				     } elsif ($version_rel_test) { #- by default, package are upgraded whatever version is !
					 if ($otherPackage && $version_cmp <= 0) {
					     log::l("force upgrading $otherPackage since it will not be updated otherwise");
					 } else {
					     #- let the parent known this installed package.
					     print UPGRADE_OUTPUT "installed:" . packageName($p) . "\n";
					     packageSetFlagInstalled($p, 1);
					 }
				     } elsif ($upgradeNeedRemove{packageName($p)}) {
					 my $otherPackage = (c::headerGetEntry($header, 'name'). '-' .
							     c::headerGetEntry($header, 'version'). '-' .
							     c::headerGetEntry($header, 'release'));
					 log::l("removing $otherPackage since it will not upgrade correctly!");
					 $toRemove{$otherPackage} = 1; #- force removing for theses other packages, select our.
				     }
				 } else {
				     if (! exists $obsoletedPackages{c::headerGetEntry($header, 'name')}) {
					 my @files = c::headerGetEntry($header, 'filenames');
					 @installedFilesForUpgrade{grep { ($_ !~ m|^/etc/rc.d/| && $_ !~ m|\.la$| &&
									   ! -d "$prefix/$_" && ! -l "$prefix/$_") } @files} = ();
				     }
				 }
			     });

	    #- find new packages to upgrade.
	    foreach my $p (values %{$packages->{names}}) {
		my $skipThis = 0;
		my $count = c::rpmdbNameTraverse($db, packageName($p), sub {
						     my ($header) = @_;
						     $skipThis ||= packageFlagInstalled($p);
						 });

		#- skip if not installed (package not found in current install).
		$skipThis ||= ($count == 0);

		#- make sure to upgrade package that have to be upgraded.
		$packageNeedUpgrade{packageName($p)} and $skipThis = 0;

		#- select the package if it is already installed with a lower version or simply not installed.
		unless ($skipThis) {
		    my $cumulSize;

		    selectPackage($packages, $p);

		    #- keep in mind installed files which are not being updated. doing this costs in
		    #- execution time but use less memory, else hash all installed files and unhash
		    #- all file for package marked for upgrade.
		    c::rpmdbNameTraverse($db, packageName($p), sub {
					     my ($header) = @_;
					     $cumulSize += c::headerGetEntry($header, 'size');
					     my @files = c::headerGetEntry($header, 'filenames');
					     @installedFilesForUpgrade{grep { ($_ !~ m|^/etc/rc.d/| && $_ !~ m|\.la$| &&
									   ! -d "$prefix/$_" && ! -l "$prefix/$_") } @files} = ();
					 });

		    $ask_child->(packageName($p), "files", sub {
				     delete $installedFilesForUpgrade{$_[0]};
				 });

		    #- keep in mind the cumul size of installed package since they will be deleted
		    #- on upgrade, only for package that are allowed to be upgraded.
		    if (allowedToUpgrade(packageName($p))) {
			print UPGRADE_OUTPUT "$cumulSize:" . packageName($p) . "\n";
		    }
		}
	    }

	    #- unmark all files for all packages marked for upgrade. it may not have been done above
	    #- since some packages may have been selected by depsList.
	    foreach my $p (values %{$packages->{names}}) {
		if (packageFlagSelected($p)) {
		    $ask_child->(packageName($p), "files", sub {
				     delete $installedFilesForUpgrade{$_[0]};
				 });
		}
	    }

	    #- select packages which contains marked files, then unmark on selection.
	    #- a special case can be made here, the selection is done only for packages
	    #- requiring locales if the locales are selected.
	    #- another special case are for devel packages where fixes over the time has
	    #- made some files moving between the normal package and its devel couterpart.
	    #- if only one file is affected, no devel package is selected.
	    foreach my $p (values %{$packages->{names}}) {
		unless (packageFlagSelected($p)) {
		    my $toSelect = 0;
		    $ask_child->(packageName($p), "files", sub {
				     if ($_[0] !~  m|^/etc/rc.d/| &&  $_ !~ m|\.la$| && exists $installedFilesForUpgrade{$_[0]}) {
					 ++$toSelect if ! -d "$prefix/$_[0]" && ! -l "$prefix/$_[0]";
				     }
				     delete $installedFilesForUpgrade{$_[0]};
				 });
		    if ($toSelect) {
			if ($toSelect <= 1 && packageName($p) =~ /-devel/) {
			    log::l("avoid selecting " . packageName($p) . " as not enough files will be updated");
			} else {
			    #- default case is assumed to allow upgrade.
			    my @deps = map { my $p = packageById($packages, $_);
					     if_($p && packageName($p) =~ /locales-/, $p) } packageDepsId($p);
			    if (@deps == 0 || @deps > 0 && (grep { !packageFlagSelected($_) } @deps) == 0) {
				log::l("selecting " . packageName($p) . " by selection on files");
				selectPackage($packages, $p);
			    } else {
				log::l("avoid selecting " . packageName($p) . " as its locales language is not already selected");
			    }
			}
		    }
		}
	    }

	    #- clean memory...
	    %installedFilesForUpgrade = ();

	    #- no need to still use the child as this point, we can let him to terminate.
	    close OUTPUT;
	    close INPUT;
	    waitpid $pid, 0;
	} else {
	    close INPUT;
	    close OUTPUT;
	    open STDIN, "<&INPUT_CHILD";
	    open STDOUT, ">&OUTPUT_CHILD";
	    exec if_($ENV{LD_LOADER}, $ENV{LD_LOADER}), "parsehdlist", "--interactive", map { "/tmp/$_->{hdlist}" } values %{$packages->{mediums}}
	      or c::_exit(1);
	}

	#- let the parent known about what we found here!
	foreach my $p (values %{$packages->{names}}) {
	    print UPGRADE_OUTPUT "select:" . packageName($p) . "\n" if packageFlagSelected($p);
	}

	#- clean false value on toRemove.
	delete $toRemove{''};

	#- get filenames that should be saved for packages to remove.
	#- typically config files, but it may broke for packages that
	#- are very old when compabilty has been broken.
	#- but new version may saved to .rpmnew so it not so hard !
	if ($toSave && keys %toRemove) {
	    c::rpmdbTraverse($db, sub {
				 my ($header) = @_;
				 my $otherPackage = (c::headerGetEntry($header, 'name'). '-' .
						     c::headerGetEntry($header, 'version'). '-' .
						     c::headerGetEntry($header, 'release'));
				 if ($toRemove{$otherPackage}) {
				     print UPGRADE_OUTPUT "remove:$otherPackage\n";
				     if (packageFlagBase($packages->{names}{c::headerGetEntry($header, 'name')})) {
					 delete $toRemove{$otherPackage}; #- keep it selected, but force upgrade.
				     } else {
					 my @files = c::headerGetEntry($header, 'filenames');
					 my @flags = c::headerGetEntry($header, 'fileflags');
					 for my $i (0..$#flags) {
					     if ($flags[$i] & c::RPMFILE_CONFIG()) {
						 print UPGRADE_OUTPUT "keepfiles:$files[$i]\n" unless $files[$i] =~ /kdelnk/;
					     }
					 }
				     }
				 }
			     });
	}

	#- close db, job finished !
	c::rpmdbClose($db);
	log::l("done selecting packages to upgrade");

	close UPGRADE_OUTPUT;
	c::_exit(0);
    }

    #- keep a track of packages that are been selected for being upgraded,
    #- these packages should not be unselected (unless expertise)
    foreach my $p (values %{$packages->{names}}) {
	packageSetFlagUpgrade($p, 1) if packageFlagSelected($p);
    }
}

sub allowedToUpgrade { $_[0] !~ /^(kernel|kernel22|kernel2.2|kernel-secure|kernel-smp|kernel-linus|kernel-linus2.2|hackkernel|kernel-enterprise)$/ }

sub installCallback {
#    my $msg = shift;
#    log::l($msg .": ". join(',', @_));
}

sub install($$$;$$) {
    my ($prefix, $isUpgrade, $toInstall, $depOrder, $media) = @_;
    my %packages;

    return if $::g_auto_install || !scalar(@$toInstall);

    #- for root loopback'ed /boot
    my $loop_boot = loopback::prepare_boot($prefix);

    #- first stage to extract some important informations
    #- about the packages selected. this is used to select
    #- one or many transaction.
    my ($total, $nb);
    foreach my $pkg (@$toInstall) {
	$packages{packageName($pkg)} = $pkg;
	$nb++;
	$total += packageSize($pkg);
    }

    log::l("pkgs::install $prefix");
    log::l("pkgs::install the following: ", join(" ", keys %packages));
    eval { fs::mount("/proc", "$prefix/proc", "proc", 0) } unless -e "$prefix/proc/cpuinfo";

    init_db($prefix);

    my $callbackOpen = sub {
	my $p = $packages{$_[0]} or log::l("unable to retrieve package of $_[0]"), return -1;
	my $f = packageFile($p);
	print LOG "$f $p->[$MEDIUM]{descr}\n";
	my $fd = install_any::getFile($f, $p->[$MEDIUM]{descr});
	$fd ? fileno $fd : -1;
    };
    my $callbackClose = sub { packageSetFlagInstalled($packages{$_[0]}, 1) };

    #- do not modify/translate the message used with installCallback since
    #- these are keys during progressing installation, or change in other
    #- place (install_steps_gtk.pm,...).
    installCallback("Starting installation", $nb, $total);

    my ($i, $min, $medium) = (0, 0, 1);
    do {
	my @transToInstall;

	if (!$depOrder || !$media) {
	    @transToInstall = values %packages;
	    $nb = 0;
	} else {
	    do {
		#- change current media if needed.
		if ($i > $media->{$medium}{max}) {
		    #- search for media that contains the desired package to install.
		    foreach (keys %$media) {
			$i >= $media->{$_}{min} && $i <= $media->{$_}{max} and $medium = $_, last;
		    }
		}
		$i >= $media->{$medium}{min} && $i <= $media->{$medium}{max} or die "unable to find right medium";
		install_any::useMedium($medium);

		while ($i <= $media->{$medium}{max} && ($i < $min || scalar @transToInstall < $limitMinTrans)) {
		    my $pkg = $depOrder->[$i++] or next;
		    my $dep = $packages{packageName($pkg)} or next;
		    if ($dep->[$MEDIUM]{selected}) {
			push @transToInstall, $dep;
			foreach (map { split '\|' } packageDepsId($dep)) {
			    $min < $_ and $min = $_;
			}
		    } else {
			log::l("ignoring package $dep->[$FILE] as its medium is not selected");
		    }
		    --$nb; #- make sure the package is not taken into account as its medium is not selected.
		}
	    } while ($nb > 0 && scalar(@transToInstall) == 0); #- avoid null transaction, it a nop that cost a bit.
	}

	#- added to exit typically after last media unselected.
	if ($nb == 0 && scalar(@transToInstall) == 0) {
	    cleanHeaders($prefix);

	    loopback::save_boot($loop_boot);
	    return;
	}

	#- extract headers for parent as they are used by callback.
	extractHeaders($prefix, \@transToInstall, $media->{$medium});

	if ($media->{$medium}{method} eq 'cdrom') {
	    #- reset file descriptor open for main process but
	    #- make sure error trying to change from hdlist are
	    #- trown from main process too.
	    install_any::getFile(packageFile($transToInstall[0]), $transToInstall[0][$MEDIUM]{descr});
	}
	#- and make sure there are no staling open file descriptor too (before forking)!
	install_any::getFile('XXX');

	my ($retry_package, $retry_count);
	while ($retry_package || @transToInstall) {
	    local (*INPUT, *OUTPUT); pipe INPUT, OUTPUT;
	    if (my $pid = fork()) {
		close OUTPUT;
		my $error_msg = '';
		local $_;
		while (<INPUT>) {
		    if (/^die:(.*)/) {
			$error_msg = $1;
			last;
		    } else {
			chomp;
			my @params = split ":";
			if ($params[0] eq 'close') {
			    &$callbackClose($params[1]);
			} else {
			    installCallback(@params);
			}
		    }
		}
		$error_msg and $error_msg .= join('', <INPUT>);
		waitpid $pid, 0;
		close INPUT;
		$error_msg and die $error_msg;
	    } else {
		#- child process will run each transaction.
		$SIG{SEGV} = sub { log::l("segmentation fault on transactions"); c::_exit(0) };
		my $db;
		eval {
		    close INPUT;
		    select((select(OUTPUT),  $| = 1)[0]);
		    $db = c::rpmdbOpen($prefix) or die "error opening RPM database: ", c::rpmErrorString();
		    my $trans = c::rpmtransCreateSet($db, $prefix);
		    if ($retry_package) {
			log::l("opened rpm database for retry transaction of 1 package only");
			c::rpmtransAddPackage($trans, $retry_package->[$HEADER], packageName($retry_package),
					      $isUpgrade && allowedToUpgrade(packageName($retry_package)));
		    } else {
			log::l("opened rpm database for transaction of ". scalar @transToInstall ." new packages, still $nb after that to do");
			c::rpmtransAddPackage($trans, $_->[$HEADER], packageName($_),
					      $isUpgrade && allowedToUpgrade(packageName($_)))
			    foreach @transToInstall;
		    }

		    c::rpmdepOrder($trans) or die "error ordering package list: " . c::rpmErrorString();
		    c::rpmtransSetScriptFd($trans, fileno LOG);

		    log::l("rpmRunTransactions start");
		    my @probs = c::rpmRunTransactions($trans, $callbackOpen,
						      sub { #- callbackClose
							  print OUTPUT "close:$_[0]\n"; },
						      sub { #- installCallback
							  print OUTPUT join(":", @_), "\n"; },
						      1);
		    log::l("rpmRunTransactions done, now trying to close still opened fd");
		    install_any::getFile('XXX'); #- close still opened fd.

		    if (@probs) {
			my %parts;
			@probs = reverse grep {
			    if (s/(installing package) .* (needs (?:.*) on the (.*) filesystem)/$1 $2/) {
				$parts{$3} ? 0 : ($parts{$3} = 1);
			    } else {
				1;
			    }
			} reverse map { s|/mnt||; $_ } @probs;

			c::rpmdbClose($db);
			die "installation of rpms failed:\n  ", join("\n  ", @probs);
		    }
		}; $@ and print OUTPUT "die:$@\n";

		c::rpmdbClose($db);
		log::l("rpm database closed");

		close OUTPUT;

		#- now search for child process which may be locking the cdrom, making it unable to be ejected.
		my (@killpid, %tree, $pid);
		local (*DIR, *F, $_);
		opendir DIR, "/proc";
		while ($pid = readdir DIR) {
		    $pid =~ /^\d+$/ or next;
		    open F, "/proc/$pid/status";
		    while (<F>) {
			/^Pid:\s+(\d+)/ and $pid == $1 || die "incorrect pid reported for $pid (found $1)";
			if (/^PPid:\s+(\d+)/) {
			    $tree{$pid} and die "PPID already found for $pid, previously $tree{$pid}, now $1";
			    $tree{$pid} = $1;
			}
		    }
		    close F;
		}
		closedir DIR;
		foreach (keys %tree) {
		    #- remove child of this process (which will terminate).
		    $pid = $_; while ($pid = $tree{$pid}) { $pid == $$ and push @killpid, $_ }
		    #- remove child of 1 direct that have a pid greater than current one.
		    $_ > $$ && $tree{$_} == 1 and push @killpid, $_;
		}
		if (@killpid) {
		    log::l("killing process ". join(", ", @killpid));
		    kill 15, @killpid;
		    sleep 2;
		    kill 9, @killpid;
		}

		c::_exit(0);
	    }

	    #- if we are using a retry mode, this means we have to split the transaction with only
	    #- one package for each real transaction.
	    unless ($retry_package) {
		my @badPackages;
		foreach (@transToInstall) {
		    if (!packageFlagInstalled($_) && $_->[$MEDIUM]{selected} && !exists($ignoreBadPkg{packageName($_)})) {
			push @badPackages, $_;
			log::l("bad package $_->[$FILE]");
		    } else {
			packageFreeHeader($_);
		    }
		}
		@transToInstall = @badPackages;
		#- if we are in retry mode, we have to fetch only one package at a time.
		$retry_package = shift @transToInstall;
		$retry_count = 3;
	    } else {
		if (!packageFlagInstalled($retry_package) && $retry_package->[$MEDIUM]{selected} && !exists($ignoreBadPkg{packageName($retry_package)})) {
		    if ($retry_count) {
			log::l("retrying installing package $retry_package->[$FILE] alone in a transaction");
			--$retry_count;
		    } else {
			log::l("bad package $retry_package->[$FILE] unable to be installed");
			packageSetFlagSelected($retry_package, 0);
			cdie ("error installing package list: $retry_package->[$FILE]");
		    }
		}
		if (packageFlagInstalled($retry_package) || ! packageFlagSelected($retry_package)) {
		    packageFreeHeader($retry_package);
		    $retry_package = shift @transToInstall;
		    $retry_count = 3;
		}
	    }
	}
	cleanHeaders($prefix);
    } while ($nb > 0 && !$pkgs::cancel_install);

    done_db();

    cleanHeaders($prefix);

    loopback::save_boot($loop_boot);
}

sub remove($$) {
    my ($prefix, $toRemove) = @_;

    return if $::g_auto_install || !@{$toRemove || []};

    log::l("reading /usr/lib/rpm/rpmrc");
    c::rpmReadConfigFiles() or die "can't read rpm config files";
    log::l("\tdone");

    my $db = c::rpmdbOpen($prefix) or die "error opening RPM database: ", c::rpmErrorString();
    log::l("opened rpm database for removing old packages");

    my $trans = c::rpmtransCreateSet($db, $prefix);

    foreach my $p (@$toRemove) {
	#- stuff remove all packages that matches $p, not a problem since $p has name-version-release format.
	c::rpmtransRemovePackages($db, $trans, $p) if allowedToUpgrade($p);
    }

    eval { fs::mount("/proc", "$prefix/proc", "proc", 0) } unless -e "$prefix/proc/cpuinfo";

    my $callbackOpen = sub { log::l("trying to open file from $_[0] which should not happen"); };
    my $callbackClose = sub { log::l("trying to close file from $_[0] which should not happen"); };

    #- we are not checking depends since it should come when
    #- upgrading a system. although we may remove some functionalities ?

    #- do not modify/translate the message used with installCallback since
    #- these are keys during progressing installation, or change in other
    #- place (install_steps_gtk.pm,...).
    installCallback("Starting removing other packages", scalar @$toRemove);

    if (my @probs = c::rpmRunTransactions($trans, $callbackOpen, $callbackClose, \&installCallback, 1)) {
	die "removing of old rpms failed:\n  ", join("\n  ", @probs);
    }
    c::rpmtransFree($trans);
    c::rpmdbClose($db);
    log::l("rpm database closed");

    #- keep in mind removing of these packages by cleaning $toRemove.
    @{$toRemove || []} = ();
}

sub selected_leaves {
    my ($packages) = @_;
    my %l;

    #- initialize l with all id, not couting base package.
    foreach my $id (0 .. $#{$packages->{depslist}}) {
	my $pkg = packageById($packages, $id) or next;
	packageSelectedOrInstalled($pkg) && !packageFlagBase($pkg) or next;
	$l{$id} = 1;
    }

    foreach my $id (keys %l) {
	#- when a package is in a choice, increase its value in hash l, because
	#- it has to be examined before when we will select them later.
	#- NB: this number may be computed before to save time.
	my $p = $packages->{depslist}[$id] or next;
	foreach (packageDepsId($p)) {
	    if (/\|/) {
		foreach (split '\|') {
		    exists $l{$_} or next;
		    $l{$_} > 1 + $l{$id} or $l{$_} = 1 + $l{$id};
		}
	    }
	}
    }

    #- at this level, we can remove selected packages that are already
    #- required by other, but we have to sort according to choice usage.
    foreach my $id (sort { $l{$b} <=> $l{$a} || $b <=> $a } keys %l) {
	#- do not count already deleted id, else cycles will be removed.
	$l{$id} or next;

	my $p = $packages->{depslist}[$id] or next;
	foreach (packageDepsId($p)) {
	    #- choices need no more to be examined, this has been done above.
	    /\|/ and next;
	    #- improve value of this one, so it will be selected before.
	    $l{$id} < $l{$_} and $l{$id} = $l{$_};
	    $l{$_} = 0;
	}
    }

    #- now sort again according to decrementing value, and gives packages name.
    [ map { packageName($packages->{depslist}[$_]) } sort { $l{$b} <=> $l{$a} } grep { $l{$_} > 0 } keys %l ];
}


sub naughtyServers {
    my ($packages) = @_;

    my @old = qw(
freeswan
jabber
);
    # boa ??
    my @sure = qw(
FreeWnn
MySQL
am-utils
apache
boa
cfengine
cups
drakxtools-http
finger-server
imap
leafnode
lpr
mon
ntp
openssh-server
pidentd
postfix
postgresql-server
proftpd
rwall
rwho
squid
webmin
wu-ftpd
ypbind
); # nfs-utils-clients portmap
  # /usr/bin/kdm, X server, xdm

  my @new = qw(
apache-mod_perl
ftp-server-krb5
mcserv
mysql
samba
telnet-server-krb5
vnc-server
ypserv
);

    my @naughtyServers = (@new, @sure);

    grep {
	my $p = packageByName($packages, $_);
	$p && packageFlagSelected($p);
    } @naughtyServers;
}

1;