This file is indexed.

/usr/share/perl5/Lintian/Collect/Binary.pm is in lintian 2.5.81ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
# -*- perl -*-
# Lintian::Collect::Binary -- interface to binary package data collection

# Copyright (C) 2008, 2009 Russ Allbery
# Copyright (C) 2008 Frank Lichtenheld
# Copyright (C) 2012 Kees Cook
#
# 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 of the License, 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, see <http://www.gnu.org/licenses/>.

package Lintian::Collect::Binary;

use strict;
use warnings;
use autodie;
use parent 'Lintian::Collect::Package';

use Lintian::Relation;
use Carp qw(croak);
use Parse::DebianChangelog;

use Lintian::Util
  qw(internal_error open_gz parse_dpkg_control get_file_checksum strip);

=head1 NAME

Lintian::Collect::Binary - Lintian interface to binary package data collection

=head1 SYNOPSIS

    my ($name, $type, $dir) = ('foobar', 'binary', '/path/to/lab-entry');
    my $collect = Lintian::Collect->new ($name, $type, $dir);
    if ($collect->native) {
        print "Package is native\n";
    }

=head1 DESCRIPTION

Lintian::Collect::Binary provides an interface to package data for binary
packages.  It implements data collection methods specific to binary
packages.

This module is in its infancy.  Most of Lintian still reads all data from
files in the laboratory whenever that data is needed and generates that
data via collect scripts.  The goal is to eventually access all data about
binary packages via this module so that the module can cache data where
appropriate and possibly retire collect scripts in favor of caching that
data in memory.

=head1 CLASS METHODS

=over 4

=item new (PACKAGE)

Creates a new Lintian::Collect::Binary object.  Currently, PACKAGE is
ignored.  Normally, this method should not be called directly, only via
the L<Lintian::Collect> constructor.

=cut

sub new {
    my ($class, $pkg) = @_;
    my $self = {};
    bless($self, $class);
    return $self;
}

=back

=head1 INSTANCE METHODS

In addition to the instance methods listed below, all instance methods
documented in the L<Lintian::Collect> and the
L<Lintian::Collect::Package> modules are also available.

=over 4

=item native

Returns true if the binary package is native and false otherwise.
Nativeness will be judged by the source version number.

If the version number is absent, this will return false (as
native packages are a lot rarer than non-native ones).

Needs-Info requirements for using I<native>: L<Same as field|Lintian::Collect/field ([FIELD[, DEFAULT]])>

=cut

sub native {
    my ($self) = @_;
    return $self->{native} if exists $self->{native};
    my $version;
    my $source = $self->field('source');
    if (defined $source && $source =~ m/\((.*)\)/) {
        $version = $1;
    } else {
        $version = $self->field('version');
    }
    if (defined $version) {
        $self->{native} = ($version !~ m/-/);
    } else {
        # We do not know, but assume it to non-native as it is
        # the most likely case.
        $self->{native} = 0;
    }
    return $self->{native};
}

=item changelog

Returns the changelog of the binary package as a Parse::DebianChangelog
object, or undef if the changelog doesn't exist.  The changelog-file
collection script must have been run to create the changelog file, which
this method expects to find in F<changelog>.

Needs-Info requirements for using I<changelog>: changelog-file

=cut

sub changelog {
    my ($self) = @_;
    return $self->{changelog} if exists $self->{changelog};
    my $dch = $self->lab_data_path('changelog');
    if (-l $dch || !-f $dch) {
        $self->{changelog} = undef;
    } else {
        my $shared = $self->{'_shared_storage'};
        my ($checksum, $changelog);
        if (defined($shared)) {
            $checksum = get_file_checksum('sha1', $dch);
            $changelog = $shared->{'changelog'}{$checksum};
        }
        if (not $changelog) {
            my %opts = (infile => $dch, quiet => 1);
            $changelog = Parse::DebianChangelog->init(\%opts);
            if (defined($shared)) {
                $shared->{'changelog'}{$checksum} = $changelog;
            }
        }
        $self->{changelog} = $changelog;
    }
    return $self->{changelog};
}

=item control ([FILE])

B<This method is deprecated>.  Consider using
L</control_index_resolved_path(PATH)> instead, which returns
L<Lintian::Path> objects.

Returns the path to FILE in the control.tar.gz.  FILE must be either a
L<Lintian::Path> object (>= 2.5.13~) or a string denoting the
requested path.  In the latter case, the path must be relative to the
root of the control.tar.gz member and should be normalized.

It is not permitted for FILE to be C<undef>.  If the "root" dir is
desired either invoke this method without any arguments at all, pass
it the correct L<Lintian::Path> or the empty string.

To get a list of entries in the control.tar.gz or the file meta data
of the entries (as L<path objects|Lintian::Path>), see
L</sorted_control_index> and L</control_index (FILE)>.

The caveats of L<unpacked|Lintian::Collect::Package/unpacked ([FILE])>
also apply to this method.  However, as the control.tar.gz is not
known to contain symlinks, a simple file type check is usually enough.

Needs-Info requirements for using I<control>: bin-pkg-control

=cut

sub control {
    ## no critic (Subroutines::RequireArgUnpacking)
    # - see L::Collect::unpacked for why
    my $self = shift(@_);
    my $f = $_[0] // '';

    warnings::warnif(
        'deprecated',
        '[deprecated] The control method is deprecated.  '
          . "Consider using \$info->control_index_resolved_path('$f') instead."
          . '  Called' # warnif appends " at <...>"
    );
    return $self->_fetch_extracted_dir('control', 'control', @_);
}

=item control_index (FILE)

Returns a L<path object|Lintian::Path> to FILE in the control.tar.gz.
FILE must be relative to the root of the control.tar.gz and must be
without leading slash (or "./").  If FILE is not in the
control.tar.gz, it returns C<undef>.

To get a list of entries in the control.tar.gz, see
L</sorted_control_index>.  To actually access the underlying file
(e.g. the contents), use L</control ([FILE])>.

Note that the "root directory" (denoted by the empty string) will
always be present, even if the underlying tarball omits it.

Needs-Info requirements for using I<control_index>: bin-pkg-control

=cut

sub control_index {
    my ($self, $file) = @_;
    if (my $cache = $self->{'control_index'}) {
        return $cache->{$file}
          if exists($cache->{$file});
        return;
    }
    my $load_info = {
        'field' => 'control_index',
        'index_file' => 'control-index',
        'index_owner_file' => undef,
        'fs_root_sub' => 'control',
        # Control files are not installed relative to the system root.
        # Accordingly, we forbid absolute paths and symlinks..
        'has_anchored_root_dir' => 0,
    };
    return $self->_fetch_index_data($load_info, $file);
}

=item sorted_control_index

Returns a sorted array of file names listed in the control.tar.gz.
The names will not have a leading slash (or "./") and can be passed
to L</control ([FILE])> or L</control_index (FILE)> as is.

The array will not contain the entry for the "root" of the
control.tar.gz.

Needs-Info requirements for using I<sorted_control_index>: L<Same as control_index|/control_index (FILE)>

=cut

sub sorted_control_index {
    my ($self) = @_;
    # control_index does all our work for us, so call it if
    # sorted_control_index has not been created yet.
    $self->control_index('') unless exists($self->{'sorted_control_index'});
    return @{ $self->{'sorted_control_index'} };
}

=item control_index_resolved_path(PATH)

Resolve PATH (relative to the root of the package) and return the
L<entry|Lintian::Path> denoting the resolved path.

The resolution is done using
L<resolve_path|Lintian::Path/resolve_path([PATH])>.

Needs-Info requirements for using I<control_index_resolved_path>: L<Same as control_index|/control_index (FILE)>

=cut

sub control_index_resolved_path {
    my ($self, $path) = @_;
    return $self->control_index('')->resolve_path($path);
}

=item strings (FILE)

Returns an open handle, which will read the data from coll/strings for
FILE.  If coll/strings did not collect any strings about FILE, this
returns an open read handle with no content.

Caller is responsible for closing the handle either way.

Needs-Info requirements for using I<strings>: strings

=cut

sub strings {
    my ($self, $file) = @_;
    my $real = $self->_fetch_extracted_dir('strings', 'strings', "${file}.gz");
    if (not -f $real) {
        open(my $fd, '<', '/dev/null');
        return $fd;
    }
    my $fd = open_gz($real);
    return $fd;
}

=item scripts

Returns a hashref mapping a FILE to its script/interpreter information
(if FILE is a script).  If FILE is not a script, it is not in the hash
(and callers should use exists to test membership to ensure this
invariant holds).

The value for a given FILE consists of a table with the following keys
(and associated value):

=over 4

=item calls_env

Returns a truth value if the script uses env (/usr/bin/env or
/bin/env) in the "#!".  Otherwise it is C<undef>.

=item interpreter

This is the interpreter used.  If calls_env is true, this will be the
first argument to env.  Otherwise it will be the command listed after
the "#!".

NB: Some template files have "#!" lines like "#!@PERL@" or "#!perl".
In this case, this value will be @PERL@ or perl (respectively).

=item name

Return the file name of the script.  This will be identical to key to
look up this table.

=back

Needs-Info requirements for using I<scripts>: scripts

=cut

sub scripts {
    my ($self) = @_;
    return $self->{scripts} if exists $self->{scripts};
    my $scrf = $self->lab_data_path('scripts');
    my %scripts;
    if (-f $scrf) {
        open(my $fd, '<', $scrf);
        while (my $line = <$fd>) {
            my (%file, $name);
            chomp($line);

            $line =~ m/^(env )?(\S*) (.*)$/o
              or internal_error("bad line in scripts file: $line");
            ($file{calls_env}, $file{interpreter}, $name) = ($1, $2, $3);

            $name =~ s,^\./,,o;
            $name =~ s,/+$,,o;
            $file{name} = $name;
            $scripts{$name} = \%file;
        }
        close($fd);
    }
    $self->{scripts} = \%scripts;

    return $self->{scripts};
}

=item objdump_info

Returns a hashref mapping a FILE to the data collected by objdump-info
or C<undef> if no data is available for that FILE.  Data is generally
only collected for ELF files.

Needs-Info requirements for using I<objdump_info>: objdump-info

=cut

sub objdump_info {
    my ($self) = @_;
    return $self->{objdump_info} if exists $self->{objdump_info};
    my $objf = $self->lab_data_path('objdump-info.gz');
    my %objdump_info;
    local $_;
    my $fd = open_gz($objf);
    foreach my $pg (parse_dpkg_control($fd)) {
        my %info;
        if (lc($pg->{'broken'}//'no') eq 'yes') {
            $info{'ERRORS'} = 1;
        }
        if (lc($pg->{'bad-dynamic-table'}//'no') eq 'yes') {
            $info{'BAD-DYNAMIC-TABLE'} = 1;
        }
        $info{'ELF-TYPE'} = $pg->{'elf-type'} if $pg->{'elf-type'};
        foreach my $symd (split m/\s*\n\s*/, $pg->{'dynamic-symbols'}//'') {
            next unless $symd;
            if ($symd =~ m/^\s*(\S+)\s+(?:(\S+)\s+)?(\S+)$/){
                # $ver is not always there
                my ($sec, $ver, $sym) = ($1, $2, $3);
                $ver //= '';
                push @{ $info{'SYMBOLS'} }, [$sec, $ver, $sym];
            }
        }
        foreach my $section (split m/\s*\n\s*/, $pg->{'section-headers'}//'') {
            next unless $section;
            # NB: helpers/coll/objdump-info-helper discards most
            # sections.  If you are missing a section name for a
            # check, please update helpers/coll/objdump-info-helper to
            # retrain the section name you need.
            strip($section);
            $info{'SH'}{$section} = 1;
        }
        foreach my $data (split m/\s*\n\s*/, $pg->{'program-headers'}//'') {
            next unless $data;
            my ($header, @vals) = split m/\s++/, $data;
            foreach my $extra (@vals) {
                my ($opt, $val) = split m/=/, $extra;
                if ($opt eq 'interp' and $header eq 'INTERP') {
                    $info{'INTERP'} = $val;
                } else {
                    $info{'PH'}{$header}{$opt} = $val;
                }
            }
        }
        foreach my $data (split m/\s*\n\s*/, $pg->{'dynamic-section'}//'') {
            next unless $data;
            # Here we just need RPATH and NEEDS, so ignore the rest for now
            my ($header, $val) = split(m/\s++/, $data, 2);
            if ($header eq 'RPATH' or $header eq 'RUNPATH') {
                # RPATH is like PATH
                foreach my $rpathcomponent (split(m/:/,$val)) {
                    $info{$header}{$rpathcomponent} = 1;
                }
            } elsif ($header eq 'NEEDED' or $header eq 'SONAME') {
                push @{ $info{$header} }, $val;
            } elsif ($header eq 'TEXTREL' or $header eq 'DEBUG') {
                $info{$header} = 1;
            } elsif ($header eq 'FLAGS_1') {
                for my $flag (split(m/\s++/, $val)) {
                    $info{$header}{$flag} = 1;
                }
            }
        }

        if ($pg->{'filename'} =~ m,^(.+)\(([^/\)]+)\)$,o) {
            # object file in a static lib.
            my ($lib, $obj) = ($1, $2);
            my $libentry = $objdump_info{$lib};
            if (not defined $libentry) {
                $libentry = {
                    'filename' => $lib,
                    'objects'  => [$obj],
                };
                $objdump_info{$lib} = $libentry;
            } else {
                push @{ $libentry->{'objects'} }, $obj;
            }
        }
        $objdump_info{$pg->{'filename'}} = \%info;
    }
    $self->{objdump_info} = \%objdump_info;

    close($fd);

    return $self->{objdump_info};
}

=item hardening_info

Returns a hashref mapping a FILE to its hardening issues.

NB: This is generally only useful for checks/binaries to emit the
hardening-no-* tags.

Needs-Info requirements for using I<hardening_info>: hardening-info

=cut

sub hardening_info {
    my ($self) = @_;
    return $self->{hardening_info} if exists $self->{hardening_info};
    my $hardf = $self->lab_data_path('hardening-info');
    my %hardening_info;
    if (-e $hardf) {
        open(my $idx, '<', $hardf);
        while (my $line = <$idx>) {
            chomp($line);

            if ($line =~ m,^([^:]+):(?:\./)?(.*)$,) {
                my ($tag, $file) = ($1, $2);
                push(@{$hardening_info{$file}}, $tag);
            }
        }
        close($idx);
    }

    $self->{hardening_info} = \%hardening_info;
    return $self->{hardening_info};
}

=item java_info

Returns a hashref containing information about JAR files found in
binary packages, in the form I<file name> -> I<info>, where I<info> is
a hash containing the following keys:

=over 4

=item manifest

A hash containing the contents of the JAR file manifest. For instance,
to find the classpath of I<$file>, you could use:

 if (exists $info->java_info->{$file}{'manifest'}) {
     my $cp = $info->java_info->{$file}{'manifest'}{'Class-Path'};
     # ...
 }

NB: Not all jar files have a manifest.  For those without, this will
value will not be available.  Use exists (rather than defined) to
check for it.

=item files

A table of the files in the JAR.  Each key is a file name and its value
is its "Major class version" for Java or "-" if it is not a class file.

=item error

If it exists, this is an error that occurred during reading of the zip
file.  If it exists, it is unlikely that the other fields will be
present.

=back

Needs-Info requirements for using I<java_info>: java-info

=cut

sub java_info {
    my ($self) = @_;
    return $self->{java_info} if exists $self->{java_info};
    my $javaf = $self->lab_data_path('java-info.gz');
    my %java_info;
    if (!-f $javaf) {
        # no java-info.gz => no jar files to collect data.  Just
        # return an empty hash ref.
        $self->{java_info} = \%java_info;
        return $self->{java_info};
    }
    my $idx = open_gz($javaf);
    my $file;
    my $file_list;
    my $manifest = 0;
    local $_;
    while (<$idx>) {
        chomp;
        next if m/^\s*$/o;

        if (m#^-- ERROR:\s*(\S.++)$#o) {
            $java_info{$file}{error} = $1;
        } elsif (m#^-- MANIFEST: (?:\./)?(?:.+)$#o) {
            # TODO: check $file == $1 ?
            $java_info{$file}{manifest} = {};
            $manifest = $java_info{$file}{manifest};
            $file_list = 0;
        } elsif (m#^-- (?:\./)?(.+)$#o) {
            $file = $1;
            $java_info{$file}{files} = {};
            $file_list = $java_info{$file}{files};
            $manifest = 0;
        } else {
            if ($manifest && m#^  (\S+):\s(.*)$#o) {
                $manifest->{$1} = $2;
            } elsif ($file_list) {
                my ($fname, $clmajor) = (m#^([^-].*):\s*([-\d]+)$#);
                $file_list->{$fname} = $clmajor;
            }

        }
    }
    $self->{java_info} = \%java_info;
    close($idx);
    return $self->{java_info};
}

=item relation (FIELD)

Returns a L<Lintian::Relation> object for the specified FIELD, which should
be one of the possible relationship fields of a Debian package or one of
the following special values:

=over 4

=item all

The concatenation of Pre-Depends, Depends, Recommends, and Suggests.

=item strong

The concatenation of Pre-Depends and Depends.

=item weak

The concatenation of Recommends and Suggests.

=back

If FIELD isn't present in the package, the returned Lintian::Relation
object will be empty (always satisfied and implies nothing).

Needs-Info requirements for using I<relation>: L<Same as field|Lintian::Collect/field ([FIELD[, DEFAULT]])>

=cut

sub relation {
    my ($self, $field) = @_;
    $field = lc $field;
    return $self->{relation}{$field} if exists $self->{relation}{$field};

    my %special = (
        all    => [qw(pre-depends depends recommends suggests)],
        strong => [qw(pre-depends depends)],
        weak   => [qw(recommends suggests)]);
    my $result;
    if ($special{$field}) {
        $result = Lintian::Relation->and(map { $self->relation($_) }
              @{ $special{$field} });
    } else {
        my %known = map { $_ => 1 }
          qw(pre-depends depends recommends suggests enhances breaks
          conflicts provides replaces);
        croak("unknown relation field $field") unless $known{$field};
        my $value = $self->field($field);
        $result = Lintian::Relation->new($value);
    }
    $self->{relation}{$field} = $result;
    return $self->{relation}{$field};
}

=item is_pkg_class ([TYPE])

Returns a truth value if the package is the given TYPE of special
package.  TYPE can be one of "transitional", "debug" or "any-meta".
If omitted it defaults to "any-meta".  The semantics for these values
are:

=over 4

=item transitional

The package is (probably) a transitional package (e.g. it is probably
empty, just depend on stuff will eventually disappear.)

Guessed from package description.

=item any-meta

This package is (probably) some kind of meta or task package.  A meta
package is usually empty and just depend on stuff.  It will also
return a truth value for "tasks" (i.e. tasksel "tasks").

A transitional package will also match this.

Guessed from package description, section or package name.

=item debug

The package is (probably) a package containing debug symbols.

Guessed from the package name.

=item auto-generated

The package is (probably) a package generated automatically (e.g. a
dbgsym package)

Guessed from the "Auto-Built-Package" field.

=back

Needs-Info requirements for using I<is_pkg_class>: L<Same as field|Lintian::Collect/field ([FIELD[, DEFAULT]])>

=cut

{
    # Regexes to try against the package description to find metapackages or
    # transitional packages.
    my $METAPKG_REGEX= qr/meta[ -]?package|dummy|(?:dependency|empty) package/;

    sub is_pkg_class {
        my ($self, $pkg_class) = @_;
        my $desc = $self->field('description', '');
        $pkg_class //= 'any-meta';
        if ($pkg_class eq 'debug') {
            return 1 if $self->name =~ m/-dbg(?:sym)?/;
            return;
        }
        if ($pkg_class eq 'auto-generated') {
            return 1 if $self->field('auto-built-package');
            return;
        }
        return 1 if $desc =~ m/transitional package/;
        $desc = lc($desc);
        if ($pkg_class eq 'any-meta') {
            my ($section) = $self->field('section', '');
            return 1 if $desc =~ m/$METAPKG_REGEX/o;
            # Section "tasks" or "metapackages" qualifies as well
            return 1 if $section =~ m,(?:^|/)(?:tasks|metapackages)$,;
            return 1 if $self->name =~ m/^task-/;
        }
        return;
    }
}

=item is_conffile (FILE)

Returns a truth value if FILE is listed in the conffiles control file.
If the control file is not present or FILE is not listed in it, it
returns C<undef>.

Note that FILE should be the filename relative to the package root
(even though the control file uses absolute paths).  If the control
file does relative paths, they are assumed to be relative to the
package root as well (and used without warning).

Needs-Info requirements for using I<is_conffile>: L<Same as control_index_resolved_path|/control_index_resolved_path(PATH)>

=cut

sub is_conffile {
    my ($self, $file) = @_;
    if (exists $self->{'conffiles'}) {
        return 1 if exists $self->{'conffiles'}{$file};
        return;
    }
    my $cf = $self->control_index_resolved_path('conffiles');
    my %conffiles;
    $self->{'conffiles'} = \%conffiles;
    return if not $cf or not $cf->is_open_ok;
    my $fd = $cf->open;
    while (my $line = <$fd>) {
        chomp $line;
        next if $line =~ m/^\s*$/;
        # Look up happens with a relative path (e.g. etc/file.conf).
        # Side-effect is that we silently "fix" relative conffiles,
        # but checks/conffiles catches those for us.
        $line =~ s,^/++,,o;
        $conffiles{$line} = 1;
    }
    close($fd);
    return 1 if exists $conffiles{$file};
    return;
}

=back

=head1 AUTHOR

Originally written by Frank Lichtenheld <djpig@debian.org> for Lintian.

=head1 SEE ALSO

lintian(1), L<Lintian::Collect>, L<Lintian::Relation>

=cut

1;

# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et