aboutsummaryrefslogtreecommitdiffstats
path: root/rpmtools.pm
blob: 0cb0f8d593338e0f71092274dd907b763eb4b962 (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
package rpmtools;

use strict;
use vars qw($VERSION @ISA %compat_arch);

require DynaLoader;

@ISA = qw(DynaLoader);
$VERSION = '3.0';

bootstrap rpmtools $VERSION;

=head1 NAME

rpmtools - Mandrake perl tools to handle rpm files and hdlist files

=head1 SYNOPSYS

    require rpmtools;

    my $params = new rpmtools;

    $params->read_hdlists("/export/Mandrake/base/hdlist.cz",
                          "/export/Mandrake/base/hdlist2.cz");
    $params->read_rpms("/RPMS/rpmtools-2.1-5mdk.i586.rpm");
    $params->compute_depslist();

    my $db = $params->db_open("");
    $params->db_traverse_tag($db,
                             "name", \@names,
                             [ qw(name version release) ],
                             sub {
        my ($p) = @_;
        print "$p->{name}-$p->{version}-$p->{release}\n";
    });
    $params->db_traverse($db,
                         [ qw(name version release) ],
                         sub {
        my ($p) = @_;
        print "$p->{name}-$p->{version}-$p->{release}\n";
    });
    $params->db_close($db);

    $params->read_depslist(\*STDIN);
    $params->write_depslist(\*STDOUT);

    rpmtools::version_compare("1.0.23", "1.0.4");

=head1 DESCRIPTION

C<rpmtools> extend perl to manipulate hdlist file used by
Linux-Mandrake distribution to compute dependency file.

=head1 SEE ALSO

parsehdlist command is a simple hdlist parser that allow interactive mode
use by DrakX upgrade algorithms.

=head1 COPYRIGHT

Copyright (C) 2000 MandrakeSoft <fpons@mandrakesoft.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

=cut

%compat_arch = ( #- compatibilty arch mapping.
		 'noarch'  => undef,
		 'i386'    => 'noarch',
		 'i486'    => 'i386',
		 'i586'    => 'i486',
		 'i686'    => 'i586',
		 'i786'    => 'i686',
		 'k6'      => 'i586',
		 'k7'      => 'k6',
		 'k8'      => 'k7',
		 'ia32'    => 'i386',
		 'ia64'    => 'noarch',
		 'ppc'     => 'noarch',
		 'alpha'   => 'noarch',
		 'sparc'   => 'noarch',
		 'sparc32' => 'sparc',
		 'sparc64' => 'sparc32',
	       );

#- build an empty params struct that can be used to compute dependencies.
sub new {
    my ($class, @tags) = @_;
    my %tags; @tags{@_} = ();
    bless {
	   flags         => [ qw(name version release size arch serial group requires provides),
			      grep { exists $tags{$_} } qw(sense files obsoletes conflicts conffiles sourcerpm) ],
	   info          => {},
	   depslist      => [],
	   provides      => {},
	  }, $class;
}

#- read one or more hdlist files, use packdrake for decompression.
sub read_hdlists {
    my ($params, @hdlists) = @_;
    my @names;

    local (*I, *O); pipe I, O;
    if (my $pid = fork()) {
	close O;

	push @names, rpmtools::_parse_(fileno *I, $params->{flags}, $params->{info}, $params->{provides});

	close I;
	waitpid $pid, 0;
    } else {
	close I;
	open STDOUT, ">&O" or die "unable to redirect output";

	require packdrake;
	packdrake::cat_archive(@hdlists);

	close O;
	exit 0;
    }
    @names;
}

#- build an hdlist from a list of files.
sub build_hdlist {
    my ($params, $noclean, $ratio, $dir, $hdlist, @rpms) = @_;
    my %names;

    #- build a working directory which will hold rpm headers.
    $dir ||= '.';
    -d $dir or mkdir $dir, 0755 or die "cannot create directory $dir\n";

    foreach (@rpms) {
	my ($key) = /([^\/]*)\.rpm$/ or next; #- get rpm filename.

	system("rpm2header '$_' > '$dir/$key'") unless -s "$dir/$key";
	$? == 0 or unlink("$dir/$key"), die "bad rpm $_\n";
	-s "$dir/$key" or unlink("$dir/$key"), die "bad rpm $_\n";

	my ($name, $version, $release, $arch) = $key =~ /(.*)-([^-]*)-([^-]*)\.([^\.]*)$/;
	my ($realname, $realversion, $realrelease, $realarch) =
	  `parsehdlist --raw --name '$dir/$key'` =~ /:name:([^\:]*)-([^\:\-]*)-([^\:\-]*)\.([^\-\.\:\s]*)(?::.*\.rpm)?$/;
	unless (length($name) && length($version) && length($release) && length($arch) &&
		$name eq $realname && $version eq $realversion && $release eq $realrelease && $arch eq $realarch) {
	    my $newkey = "$realname-$realversion-$realrelease.$realarch:$key";
	    symlink "$dir/$key", "$dir/$newkey" unless -e "$newkey";
	    $key = $newkey;
	}
	push @{$names{$realname} ||= []}, $key;
    }

    #- compression ratio are not very high, sample for cooker
    #- gives the following (main only and cache fed up):
    #- ratio compression_time  size
    #-   9       21.5 sec     8.10Mb   -> good for installation CD
    #-   6       10.7 sec     8.15Mb
    #-   5        9.5 sec     8.20Mb
    #-   4        8.6 sec     8.30Mb   -> good for urpmi
    #-   3        7.6 sec     8.60Mb
    open B, "| packdrake -b${ratio}ds '$hdlist' '$dir' 400000";
    foreach (@{$params->{depslist}}) {
	if (my $keys = delete $names{$_->{name}}) {
	    print B "$_\n" foreach @$keys;
	}
    }
    foreach (values %names) {
	print B "$_\n" foreach @$_;
    }
    close B or die "packdrake failed\n";

    system("rm", "-rf", $dir) unless $dir eq '.' || $noclean;
}

#- read one or more rpm files.
sub read_rpms {
    my ($params, @rpms) = @_;

    map { rpmtools::_parse_($_, $params->{flags}, $params->{info}, $params->{provides}) } @rpms;
}

#- allocate id for newly entered value.
#- this is no more necessary to compute_depslist on them (and impossible)
sub compute_id {
    my ($params) = @_;

    #- avoid recomputing already present infos, take care not to modify
    #- existing entries, as the array here is used instead of values of infos.
    my @info = grep { ! exists $_->{id} } values %{$params->{info}};

    #- speed up the search by giving a provide from all packages.
    #- and remove all dobles for each one !
    foreach (@info) {
	push @{$params->{provides}{$_->{name}} ||= []}, "$_->{name}-$_->{version}-$_->{release}.$_->{arch}";
    }

    #- remove all dobles for each provides.
    foreach (keys %{$params->{provides}}) {
	$params->{provides}{$_} or next;
	my %provides; @provides{@{$params->{provides}{$_}}} = ();
	$params->{provides}{$_} = [ keys %provides ];
    }

    #- give an id to each packages, start from number of package already
    #- registered in depslist.
    my $global_id = scalar @{$params->{depslist}};
    foreach (sort { package_name_compare($a->{name}, $b->{name}) } @info) {
	$_->{id} = $global_id++;
	push @{$params->{depslist}}, $_;
    }
    1;
}

#- compute dependencies, result in stored in info values of params.
#- operations are incremental, it is possible to read just one hdlist, compute
#- dependencies and read another hdlist, and again.
sub compute_depslist {
    my ($params) = @_;

    #- avoid recomputing already present infos, take care not to modify
    #- existing entries, as the array here is used instead of values of infos.
    my @info = grep { ! exists $_->{id} } values %{$params->{info}};

    #- speed up the search by giving a provide from all packages.
    #- and remove all dobles for each one !
    foreach (@info) {
	push @{$params->{provides}{$_->{name}} ||= []}, "$_->{name}-$_->{version}-$_->{release}.$_->{arch}";
    }

    #- remove all dobles for each provides.
    foreach (keys %{$params->{provides}}) {
	$params->{provides}{$_} or next;
	my %provides; @provides{@{$params->{provides}{$_}}} = ();
	$params->{provides}{$_} = [ keys %provides ];
    }

    #- take into account in which hdlist a package has been found.
    #- this can be done by an incremental take into account generation
    #- of depslist.ordered part corresponding to the hdlist.
    #- compute closed requires, do not take into account choices.
    foreach (@info) {
	my %required_packages;
	my @required_packages;
	my %requires; @requires{@{$_->{requires} || []}} = ();
	my @requires = keys %requires;

	while (my $req = shift @requires) {
	    $req =~ /^basesystem/ and next; #- never need to requires basesystem directly as always required! what a speed up!
	    ref $req or $req = ($params->{info}{$req} && [ $req ] ||
				$params->{provides}{$req} ||
				($req =~ /rpmlib\(/ ? [] : [ ($req !~ /NOTFOUND_/ && "NOTFOUND_") . $req ]));
	    if (@$req > 1) {
		#- this is a choice, no closure need to be done here.
		exists $requires{$req} or push @required_packages, $req;
		$requires{$req} = undef;
	    } else {
		#- this could be nothing if the provides is a file not found.
		#- and this has been fixed above.
		foreach (@$req) {
		    my $info = $params->{info}{$_};
		    $required_packages{$_} = undef; $info or next;
		    if ($info->{deps} && !$info->{requires}) {
			#- the package has been read from an ordered depslist file, and need
			#- to rebuild its requires tags, so it can safely be used here.
			my @rebuild_requires;
			foreach (split ' ', $info->{deps}) {
			    if (/\|/) {
				push @rebuild_requires, [ map { $params->{depslist}[$_]{name} || $_ } split /\|/, $_ ];
			    } else {
				push @rebuild_requires, $params->{depslist}[$_]{name} || $_;
			    }
			}
			$info->{requires} = \@rebuild_requires;
		    }
		    foreach (@{$info->{requires} || []}) {
			unless (exists $requires{$_}) {
			    $requires{$_} = undef;
			    push @{ref $_ ? \@required_packages : \@requires}, $_;
			}
		    }
		}
	    }
	}
	unshift @required_packages, keys %required_packages;

	delete $_->{requires}; #- affecting it directly make perl crazy, oops for rpmtools. TODO
	$_->{requires} = \@required_packages;
    }

    #- sort packages, expand choices and closure again.
    my %ordered;
    foreach (@info) {
	my %requires;
	my @requires = ("$_->{name}-$_->{version}-$_->{release}.$_->{arch}");
	while (my $dep = shift @requires) {
	    foreach (@{$params->{info}{$dep} && $params->{info}{$dep}{requires} || []}) {
		if (ref $_) {
		    foreach (@$_) {
			unless (exists $requires{$_}) {
			    $requires{$_} = undef;
			    push @requires, $_;
			}
		    }
		} else {
		    unless (exists $requires{$_}) {
			$requires{$_} = undef;
			push @requires, $_;
		    }
		}
	    }
	}

	if ($_->{name} eq 'basesystem') {
	    foreach (keys %requires) {
		$ordered{$_} += 10001;
	    }
	} else {
	    foreach (keys %requires) {
		++$ordered{$_};
	    }
	}
    }

    #- some package should be sorted at the beginning.
    my $fixed_weight = 10000;
    foreach (qw(basesystem filesystem setup glibc sash bash libtermcap2 termcap readline ldconfig)) {
	foreach (@{$params->{provides}{$_} || []}) {
	    $ordered{$_} = $fixed_weight;
	}
	$fixed_weight += 10000;
    }

    #- compute base flag, consists of packages which are required without
    #- choices of basesystem and are ALWAYS installed. these packages can
    #- safely be removed from requires of others packages.
    foreach (@{$params->{provides}{basesystem} || []}) {
	foreach (@{$params->{info}{$_}{requires}}) {
	    ref $_ or $params->{info}{$_} and $params->{info}{$_}{base} = undef;
	}
    }

    #- some package are always installed as base and can safely be marked as such.
    foreach (qw(basesystem glibc kernel)) {
	foreach (@{$params->{provides}{$_} || []}) {
	    $params->{info}{$_} and $params->{info}{$_}{base} = undef;
	}
    }

    #- give an id to each packages, start from number of package already
    #- registered in depslist.
    my $global_id = scalar @{$params->{depslist}};
    foreach (sort { ($ordered{"$b->{name}-$b->{version}-$b->{release}.$b->{arch}"} <=>
		     $ordered{"$a->{name}-$a->{version}-$a->{release}.$a->{arch}"}) ||
		       package_name_compare($a->{name}, $b->{name}) } @info) {
	$_->{id} = $global_id++;
    }

    #- recompute requires to use packages id, drop any base packages or
    #- reference of a package to itself.
    foreach my $pkg (sort { $a->{id} <=> $b->{id} } @info) {
	my ($id, $base, %requires_id, @requires_id);
	foreach (@{$pkg->{requires}}) {
	    if (ref $_) {
		#- all choices are grouped together at the end of requires,
		#- this allow computation of dropable choices.
		my ($to_drop, @choices_base_id, @choices_id);
		foreach (@$_) {
		    my ($id, $base) = $params->{info}{$_} ? ($params->{info}{$_}{id}, exists $params->{info}{$_}{base}) : ($_, 0);
		    $base and push @choices_base_id, $id;
		    $base &&= ! exists $pkg->{base};
		    $to_drop ||= $id == $pkg->{id} || $requires_id{$id} || $base;
		    push @choices_id, $id;
		}

		#- package can safely be dropped as it will be selected in requires directly.
		$to_drop and next;

		#- if a base package is in a list, keep it instead of the choice.
		if (@choices_base_id) {
		    @choices_id = @choices_base_id;
		    $base = 1;
		}
		if (@choices_id == 1) {
		    $id = $choices_id[0];
		} else {
		    my $choices_key = join '|', @choices_id;
		    exists $requires_id{$choices_key} or push @requires_id, \@choices_id;
		    $requires_id{$choices_key} = undef;
		    next;
		}
	    } else {
		($id, $base) = $params->{info}{$_} ? ($params->{info}{$_}{id}, exists $params->{info}{$_}{base}) : ($_, 0);
	    }

	    #- select individual package.
	    $base &&= ! exists $pkg->{base};
	    $requires_id{$id} = $_;
	    $id == $pkg->{id} || $base or push @requires_id, $id;
	}
	#- cannot remove requires values as they are necessary for closure on incremental job.
	$pkg->{deps} = join(' ', map { join '|', @{ref $_ ? $_ : [$_]} } @requires_id);
	push @{$params->{depslist}}, $pkg;
    }
    1;
}

#- read depslist.ordered file, as if it was computed internally.
sub read_depslist {
    my ($params, $FILE) = @_;
    my $global_id = scalar @{$params->{depslist}};

    local $_;
    while (<$FILE>) {
	chomp; /^\s*#/ and next;
	my ($name, $version, $release, $arch, $serial, $size, $deps) =
	  /^([^:\s]*)-([^:\-\s]+)-([^:\-\s]+)\.([^:\.\-\s]*)(?::(\d+)\S*)?\s+(\d+)\s*(.*)/;

	#- store values here according to it.
	push @{$params->{depslist}},
	  $params->{info}{"$name-$version-$release.$arch"} = {
							      name        => $name,
							      version     => $version,
							      release     => $release,
							      arch        => $arch,
							      $serial ? (serial      => $serial) : (),
							      size        => $size,
							      deps        => $deps,
							      id          => $global_id++,
							     };
	#- this can be really usefull as there are no more hash on name directly,
	#- but provides gives something quite interesting here.
	push @{$params->{provides}{$name}}, "$name-$version-$release.$arch";
    }

    #- compute base flag, consists of packages which are required without
    #- choices of basesystem and are ALWAYS installed. these packages can
    #- safely be removed from requires of others packages.
    foreach (@{$params->{provides}{basesystem} || []}) {
	if ($params->{info}{$_} && ! exists $params->{info}{$_}{base}) {
	    my @requires_id;
	    foreach (split ' ', $params->{info}{$_}{deps}) {
		/\|/ or push @requires_id, $_;
	    }
	    foreach ($params->{info}{$_}{id}, @requires_id) {
		$params->{depslist}[$_] and $params->{depslist}[$_]{base} = undef;
	    }
	}
    }
    1;
}

#- write depslist.ordered file according to info in params.
sub write_depslist {
    my ($params, $FILE, $min, $max) = @_;

    $min > 0 or $min = 0;
    defined $max && $max < scalar(@{$params->{depslist} || []}) or $max = scalar(@{$params->{depslist} || []}) - 1;
    $max >= $min or return;

    for ($min..$max) {
	my $pkg = $params->{depslist}[$_];
	printf $FILE ("%s-%s-%s.%s%s %s %s\n",
		      $pkg->{name}, $pkg->{version}, $pkg->{release}, $pkg->{arch},
		      ($pkg->{serial} ? ":$pkg->{serial}" : ''), $pkg->{size} || 0, $pkg->{deps});
    }
    1;
}

#- fill params provides with files that can be used, it use the format for
#- a provides file.
sub read_provides_files {
    my ($params, $FILE) = @_;

    local $_;
    while (<$FILE>) {
	chomp;
	my ($k, @v) = split '@';
	$k =~ /^\// and $params->{provides}{$k} ||= undef;
    }
    1;
}

#- check if there has been a problem with reading hdlists or rpms
#- to resolve provides on files.
#- this is done by checking whether there exists a keys in provides
#- hash where to value is null (and the key is a file).
#- give the result as output.
sub get_unresolved_provides_files {
    my ($params) = @_;
    my ($k, $v, @unresolved);

    while (($k, $v) = each %{$params->{provides}}) {
	$k =~ /^\// && ! defined $v and push @unresolved, $k;
    }
    @unresolved;
}

#- clean everything on provides but keep the files key entry on undef.
#- this is necessary to try a second pass.
#- support sense in flags.
sub keep_only_cleaned_provides_files {
    my ($params) = @_;
    my @keeplist = map { s/\[\*\]//g; $_ } grep { /^\// } keys %{$params->{provides}};

    #- clean everything at this point, but keep file referenced.
    $params->{info} = {};
    $params->{depslist} = [];
    $params->{provides} = {}; @{$params->{provides}}{@keeplist} = ();
}

#- reset params to allow other entries.
sub clean {
    my ($params) = @_;

    $params->{info} = {};
    $params->{depslist} = [];
    $params->{provides} = {};
}

#- read provides, first is key, after values.
sub read_provides {
    my ($params, $FILE) = @_;

    local $_;
    while (<$FILE>) {
	chomp;
	my ($k, @v) = split '@';
	$params->{provides}{$k} = @v > 0 ? \@v : undef;
    }
}

#- write provides, first is key, after values.
sub write_provides {
    my ($params, $FILE) = @_;
    my ($k, $v);

    while (($k, $v) = each %{$params->{provides}}) {
	printf $FILE "%s\n", join '@', $k, @{$v || []};
    }
}

#- read compss, look at DrakX for more info.
sub read_compss {
    my ($params, $FILE) = @_;
    my $p;

    local $_;
    while (<$FILE>) {
	/^\s*$/ || /^#/ and next;
	s/#.*//;

	if (/^(\S.*)/) {
	    $p = $1;
	} else {
	    /(\S+)/;
	    $params->{info}{$1} and $params->{info}{$1}{group} = $p;
	}
    }
    1;
}

#- write compss.
sub write_compss {
    my ($params, $FILE) = @_;
    my %p;

    foreach (values %{$params->{info}}) {
	$_->{group} or next;
	push @{$p{$_->{group}} ||= []}, $_->{name};
    }
    foreach (sort keys %p) {
	print $FILE $_, "\n";
	foreach (@{$p{$_}}) {
	    print $FILE "\t", $_, "\n";
	}
	print $FILE "\n";
    }
    1;
}

#- compare architecture.
sub better_arch {
    my ($new, $old) = @_;
    while ($new && $new ne $old) { $new = $compat_arch{$new} }
    $new;
}
sub compat_arch { better_arch(arch(), $_[0]) }

#- compare a version string, make sure no deadlock can occur.
#- try to return always a numerical value.
sub version_compare {
    return rpmvercmp(@_);
}
#- historical perl version (still breaks on "4m" with "4.1m"...
#-    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;
#-    }
#-    0;

#- compare package name to increase chance of avoiding loop in prerequisite chain.
sub package_name_compare {
    my ($a, $b) = @_;
    my ($sa,$sb);

    ($sa) = ($a =~ /^lib(.*)/);
    ($sb) = ($b =~ /^lib(.*)/);
    $sa && $sb and return $sa cmp $sb;
    $sa and return -1;
    $sb and return +1;
    $a cmp $b; #- fall back.
}

1;