This file is indexed.

/usr/bin/ucfq is in ucf 3.0027+nmu1.

This file is owned by root:root, with mode 0o755.

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
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
#!/usr/bin/perl
#                              -*- Mode: Cperl -*-
# ucfq ---
# Author           : Manoj Srivastava ( srivasta@glaurung.internal.golden-gryphon.com )
# Created On       : Wed Apr 12 14:51:16 2006
# Created On Node  : glaurung.internal.golden-gryphon.com
# Last Modified By : Manoj Srivastava
# Last Modified On : Fri Apr 14 19:30:45 2006
# Last Machine Used: glaurung.internal.golden-gryphon.com
# Update Count     : 81
# Status           : Unknown, Use with caution!
# HISTORY          :
# Description      :
#
# arch-tag: 1390e09f-ee31-4d7f-a968-bd539ea061a0
#
=head1 NAME

ucfq - query ucf registry and hashfile about configuration file details.

=cut

use strict;


package ucf;

use strict;
use Getopt::Long;

# set the version and revision
($main::MYNAME     = $main::0) =~ s|.*/||;
$main::Author      = "Manoj Srivastava";
$main::AuthorMail  = "srivasta\@debian.org";

=head1 SYNOPSIS

 usage: ucfq [options] (file|package)[file|package  ...]

=cut


{  # scope for ultra-private meta-object for class attributes

  my %Ucf =
    (
     Optdesc  =>
     {
      'help|h'         => sub {print ucf->Usage();     exit 0;},
      'with-colons|w!' => sub {$::ConfOpts{"Colons"}= "$_[1]";},
      'state-dir=s'    => sub {$::ConfOpts{"StateDir"}= "$_[1]";},
      'debug|d'        => sub {$::ConfOpts{"DEBUG"}+= "$_[1]";},
      'verbose|v'      => sub {$::ConfOpts{"VERBOSE"}+= "$_[1]";}
     },
     Usage => qq(Usage: $main::MYNAME [options]
Author: $main::Author <$main::AuthorMail>
  where options are:
 --help                This message.
 --debug               Turn on debugging mode.
 --verbose             Make the script more verbose.
 --with-colons         A compact, machine readable version of the output.
 --state-dir </path/>  Set the state directory to /path/ instead of the
                       default /var/lib/ucf.

),
     Defaults =>
     {
      "Colons"   => 0,
      "DEBUG"    => 0,
      "VERBOSE"  => 0,
      "StateDir" => '/var/lib/ucf'
     }
    );
  # tri-natured: function, class method, or object method
  sub _classobj {
    my $obclass = shift || __PACKAGE__;
    my $class   = ref($obclass) || $obclass;
    no strict "refs";   # to convert sym ref to real one
    return \%$class;
  }

  for my $datum (keys %Ucf ) {
    no strict "refs";
    *$datum = sub {
      use strict "refs";
      my ($self, $newvalue) = @_;
      $Ucf{$datum} = $newvalue if @_ > 1;
      return $Ucf{$datum};
    }
  }
}

=head1 OPTIONS

=over 3

=item B<--help> B<h> Print out a usage message.

=item B<--debug> B<-d> Turn on debugging mode.

=item B<--verbose> B<-v> Make the script more verbose..

=item B<--with-colons> B<-w>

=over 2

Normally, the script presents the information in a human readable
tabular format, but that may be harder for a machine to parse. With
this option, the output is a compact, colon separated line, with no
dividers, headers, or footer.

=back

=item B<--state-dr> dir

=over 2

Set the state directory to C</path/to/dir> instead of the default
C</var/lib/ucf>.  Used mostly for testing.

=back

=back

=cut


=head1 DESCRIPTION


This script takes a set of arguments, each of which is a package or a
path to a configuration file, and outputs the associated package, if
any, if the file exists on disk, and whether it has been modfied by te
user.  The output is either a human readable tabular form, or a
compact colon-separated machine friendly format.

This script can potentially be used in package C<postinst> scripts
during purge to query the system for configuration files that may
still exist on the system, and whether these files have been locally
modified by the user -- assuming that the package registered all the
configuration files with B<ucf> using C<ucfr>.

=cut




=head1 INTERNALS

=head2 Class Methods

All class methods mediate access to class variables.  All class
methods can be invoked with zero or one parameters. When invoked with
the optional parameter, the class method sets the value of the
underlying class data.  In either case, the value of the underlying
variable is returned.

=cut

=head1 Class ucf

This is a combination view and controller class that mediates between
the user and the internal model classes.


=head2 new

This is the constructor for the class. It takes a number of optional
parameters. If the parameter B<Colons> is present, then the output
will be compact. The parameters B<DEBUG> and B<VERBOSE> turn on
additional diagnostics from the script.

=cut

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  bless $self => $class;

  # validate and sanitize the settings
  $self->validate(%params);

  return $self;
}

=head2 validate

This routine is responsible for ensuring that the parameters passed in
(presumably from the command line) are given preference.

=cut

sub validate{
  my $this     = shift;
  my %params   = @_;
  my $defaults = $this->Defaults();


  # Make sure runtime options override what we get from the config file
  for my $option (keys %params) {
    $this->{Con_Ref}->{"$option"} = $params{"$option"};
  }

  # Ensure that if default parameters have not been set on the comman
  # line on in the configuration file, if any, we use the built in
  # defaults.
  for my $default (keys %$defaults) {
    if (! defined $this->{Con_Ref}->{"$default"}) {
      $this->{Con_Ref}->{"$default"} = $defaults->{"$default"};
    }
  }
}

=head2 get_config_ref

This routine returns a reference to the configuration hash

=cut

sub get_config_ref {

  my $this     = shift;
  return $this->{Con_Ref};
}

=head2 dump_config

This routine returns a C<Data::Dumper> for debugging purposes

=cut

sub dump_config {
  my $this     = shift;
  for (keys %{$this->{Con_Ref}}) {
    print  "$_ = [${$this->{Con_Ref}}{$_}]\n"
  }
}

=head2 process

This routine is the work horse routine -- it parses the command line
arguments, and queries the on disk databases, determines of the files
exist, and have been modified.

=cut


sub process {
  my $this      = shift;

# Step 1: Process all arguments in sequence.
# Step 2: determine if the arument given is a package name (no / in
#         arg)

  %{$this->{packages}}    = map { +"$_" => 1} grep {! m,/,} @ARGV;
  %{$this->{configs}}     = map { +"$_" => 1} grep {  m,/,} @ARGV;
  $this->{pkg_list}       = object_list->new;
  $this->{file_list}      = object_list->new;
  $this->{registry_proxy} =
    registry->new("StateDir" => $this->{Con_Ref}->{StateDir});
  $this->{hashfile_proxy} =
    hashfile->new("StateDir" => $this->{Con_Ref}->{StateDir});

  for (keys %{$this->{packages}} ) {
    my $package = pkg->new('Name' => "$_");
    $this->{pkg_list}->element($_, $package);
  }
  for (keys %{$this->{configs}}) {
    warn "Need a fully qualified path name for config file \"$_\"\n"
      unless m,^/,;
    # Don't die for etch
    exit 0 unless m,^/,;

    my $file = conffile->new('Name' => "$_");
    $this->{file_list}->element($_, $file);
  }
# Step 3: If so, gather all files associated with the package
  for my $package ($this->{pkg_list}->list) {
    my $pkg_files = $this->{registry_proxy}->list_files($package);
    for my $file (@$pkg_files) {
      if (! defined $this->{file_list}->element($file)) {
        my $ret = conffile->new('Name' => "$file");
        $this->{file_list}->element($file, $ret);
      }
      $this->{file_list}->element($file)->conffile_package($package);
    }
  }
# Step 4: for all configuration files, determine package (unless
#         already determined), if any
# Step 5: For each configuration file, check if it exists
# Step 6: For each existing file, see if it has been changed

  for my $file ($this->{file_list}->list) {
    $this->{file_list}->element($file)->conffile_hash($file, $this->{hashfile_proxy}->hash($file));
    if (! defined $this->{file_list}->element($file)->conffile_package) {
      $this->{file_list}->element($file)->conffile_package($this->{registry_proxy}->find_pkg($file));
    }
  }
}

=head2 report

This routine generates a nicely formatted report based on the
information gathered during the processing. There are two kinds of
reports, the first being a user friendly tabular form, the second
(turned on by the C<-w> option) a easily parseable colon separated
report.

=cut


our ($out_pkg, $out_file, $there, $mod);

format STDOUT_TOP =
Configuration file                            Package             Exists Changed
.

format STDOUT =
@<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<<< @|||   @|||
$out_file,                                    $out_pkg,           $there,$mod
.

sub report {
  my $this      = shift;
  for my $file (sort $this->{file_list}->list) {
    ($out_pkg, $out_file, $there, $mod) =
      $this->{file_list}->element($file)->conffile_report;
    if ($this->{Con_Ref}->{Colons}) {
      print "$out_file:$out_pkg:$there:$mod\n";
    }
    else {
      write;
    }
  }
}

=head1 Class registry

This moel class encapsulates the package-configuration file
associations registry.  It parses the data in the registry, and
provides methods to query the registry based either on package name,
or the full path of the configuration file.

=cut

package registry;
use strict;

=head2 new

This is the constructor for the class.  It takes a required parameter
B<StateDir>, and based on that, proceeds toparse the registry and
populate internal data structures.

=cut

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  die "Missing required parameter StateDir"
    unless $params{StateDir};

  if (-e "$params{StateDir}/registry") {
    if (! -r "$params{StateDir}/registry") {
      die "Can't read registry file $params{StateDir}/registry:$!";
    }
    open (REG, "$params{StateDir}/registry") ||
      die "Can't read registry file $params{StateDir}/registry:$!";
    while (<REG>) {
      chomp;
      my ($pkg, $file) = m/^(\S+)\s+(\S+)$/;
      $self->{Packages}->{$file} = $pkg;
      if (exists $self->{List}->{$pkg}) {
        push @{$self->{List}->{$pkg}}, $file;
      }
      else {
        $self->{List}->{$pkg} = [ $file ];
      }
    }
  }

  bless $self => $class;

  return $self;
}

=head2 list_files

This routine queries the registry and lists all configuration files
associated with the given package.  Takes the package name as a
required parameter.

=cut

sub list_files {
  my $this      = shift;
  my $pkg       = shift;

  if (exists $this->{List}->{$pkg}) {
    return [ @{$this->{List}->{$pkg}} ];
  }
  else {
    return [];
  }
}


=head2 find_pkg

This routine queries the registry for the package associated with the
given file.  Takes the path of the configuration file as a required
parameter.

=cut

sub find_pkg {
  my $this      = shift;
  my $file      = shift;

  if (exists $this->{Packages}->{$file}) {
    return $this->{Packages}->{$file};
  }
  else {
    return undef;
  }
}

=head1 Class hashfile

This moel class encapsulates the configuration file hash database.  It
parses the data in the database, and provides methods to query the
hash of the configuration file.

=cut

package hashfile;
use strict;

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  die "Missing required parameter StateDir"
    unless $params{StateDir};


  if (-e "$params{StateDir}/hashfile") {
    if (! -r "$params{StateDir}/hashfile") {
      die "Can't read registry file $params{StateDir}/hashfile:$!";
    }
    open (HASH, "$params{StateDir}/hashfile") ||
      die "Can't read registry file $params{StateDir}/hashfile:$!";
    while (<HASH>) {
      chomp;
      my ($hash, $file) = m/^(\S+)\s+(\S+)$/;
      $self->{$file} = $hash
    }
  }

  bless $self => $class;

  return $self;
}


=head2 hash

This routine queries the database for the hash associated with the
developers version of the given file.  Takes the path of the
configuration file as a required parameter.

=cut


sub hash {
  my $this      = shift;
  my $file      = shift;
  my $value     = shift;

  if ($value) {
    $this->{$file} = $value;
  }
  return $this->{$file};
}

=head1 class conffile

This is the encapsulation of a configuration file metadata.

=cut



package conffile;
use strict;
use Cwd qw{abs_path};


=head2 new

This is the constructor for the class. It takes a number of optional
parameters. If the parameter B<Colons> is present, then the output
will be compact. The parameters B<DEBUG> and B<VERBOSE> turn on
additional diagnostics from the script.

=cut

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  die "Missing required parameter Name"
    unless $params{Name};
  $self->{Name}    = $params{Name};
  $self->{Package} = $params{Package}
    if $params{Package};
  $self->{Exists}  = 'Yes' if -e $self->{Name};
  if ($self->{Exists}) {
    $self->{Name}  = abs_path( $self->{Name});
  }
  bless $self => $class;

  return $self;
}


=head2 conffile_package

This routine is the accessor method of the internal attribute that
holds package name associated with the file.  If an optional C<value>
is present, updates the value of the attribute.

=cut

sub conffile_package {
  my $this      = shift;
  my $value     = shift;

  if ($value ) {
    $this->{Package} = $value;
  }
  if (exists $this->{Package}) {
    return $this->{Package};
  }
  else {
    return undef;
  }
}

=head2 conffile_exists

This routine is the accessor method of the internal attribute that
holds the information whether the file exists on disk or not.

=cut

sub conffile_exists {
  my $this      = shift;
  my $name      = shift;
  my $value     = shift;

  die "Missing required parameter Name"
    unless $name;
  if (exists $this->{Exists}) {
    return $this->{Exists};
  }
  else {
    return undef;
  }
}

=head2 conffile_modified

This routine is the accessor method of the internal attribute that
holds the information whether the file exists on disk or not.  If an
optional C<value> is present, updates the value of the attribute.

=cut

sub conffile_modified {
  my $this      = shift;
  my $name      = shift;
  my $value     = shift;

  die "Missing required parameter Name"
    unless $name;
  if ($value ) {
    $this->{Modified} = $value;
  }
  if (exists $this->{Modified}) {
    return $this->{Modified};
  }
  else {
    return undef;
  }
}

=head2 conffile_hash

This routine is the accessor method of the internal attribute that
holds the hash for the developers version of the file.  If an optional
C<value> is present, updates the value of the attribute.  It also
notes whether or not the file is modified from the developers version.

=cut

sub conffile_hash {
  my $this      = shift;
  my $name      = shift;
  my $value     = shift;

  die "Missing required parameter Name"
    unless $name;
  if ($value ) {
    $this->{Hash} = $value;
    if (-e "$name") {
      if (-x "/usr/bin/md5sum") {
        open (NEWHASH, "/usr/bin/md5sum $name |") ||
          die "Could not run md5sum: $!";
        while (<NEWHASH>) {
          chomp;
          my ($hash, $dummy) = m/^(\S+)\s+(\S+)$/;
          if ("$hash" ne "$value") {
            $this->{Modified} = 'Yes';
          }
          else {
            $this->{Modified} = 'No';
          }
        }
        close NEWHASH;
      }
      else {
        die "Could not find /usr/bin/md5sum .\n";
      }
    }
  }
  if (exists $this->{Hash}) {
    return $this->{Hash};
  }
  else {
    return undef;
  }
}

sub conffile_report {
  my $this      = shift;
  return $this->{Package} ? $this->{Package} : "",
    $this->{Name}, $this->{Exists} ? $this->{Exists} : "",
      $this->{Modified}? $this->{Modified} : "";
}


=head1 CLASS PKG

This is an encapsulation of package metadata.  Packages may be
associated with configuration files.

=cut


package pkg;
use strict;


=head2 new

This is the constructor for the class. It takes a number of optional
parameters. If the parameter B<Colons> is present, then the output
will be compact. The parameters B<DEBUG> and B<VERBOSE> turn on
additional diagnostics from the script.

=cut

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  die "Missing required parameter Name"
    unless $params{Name};
  $self->{Name} = $params{Name};

  bless $self => $class;

  return $self;
}

sub list_files {
  my $this   = shift;
  return [];
}

=head1 CLASS object_list

This is a clas which holds lists of object names, either packages or
configuration file object names.  It provides methods to add, access,
and remove objects, as well as an option to list all elements in the
list.

=cut

package object_list;
use strict;



=head2 new

This is the constructor for the class. It takes no arguments.

=cut

sub new {
  my $this = shift;
  my %params = @_;
  my $class = ref($this) || $this;
  my $self = {};

  $self->{"List"} = ();

  bless $self => $class;

  return $self;
}

=head2 element

This is an accessor method for elements of the list. If an optional
value argument exists, it creates or updates the element associtated
with the vaslue. Takes in a required name, which is used as a kay, and
an optional value argument. The value is returned.

=cut

sub element {
  my $this      = shift;
  my $name      = shift;
  my $value     = shift;

  die "Missing required parameter Name"
    unless $name;
  if ($value) {
    $this->{"List"}->{$name} =  $value;
  }
  if (exists $this->{"List"}->{$name}) {
    return $this->{"List"}->{$name};
  }
  else {
    return undef;
  }
}


=head2 remove

Removes elements from the list.  Take in an required name, which is
used as the key for the element to delete.

=cut

sub remove {
  my $this      = shift;
  my $name      = shift;
  die "Missing required parameter Name"
    unless $name;
  delete $this->{"List"}->{$name}
    if (exists $this->{"List"}->{$name} );
}

=head2 list

This routine lists all the elements in the list.  It does not take any
options.

=cut

sub list {
  my $this      = shift;

  return keys %{$this->{"List"}};
}

package main;
use Getopt::Long;

sub main {
  my $optdesc = ucf->Optdesc();
  my $parser  = new Getopt::Long::Parser;
  $parser->configure("bundling");
  $parser->getoptions (%$optdesc);
  my $query = ucf->new(%::ConfOpts);
  $query->process;
  $query->report;
}

&main;

exit 0;

=head1 CAVEATS

This is very inchoate, at the moment, and needs testing.

=cut

=head1 BUGS

None Known so far.

=cut

=head1 AUTHOR

Manoj Srivastava <srivasta\@debian.org>

=head1 COPYRIGHT AND LICENSE

This script is a part of the Ucf package, and is

Copyright (c) 2006 Manoj Srivastava <srivasta\@debian.org>

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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

=cut

1;

__END__