/usr/share/lintian/checks/symlinks is in lintian 2.5.10.4.
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 | # symlinks -- lintian check script -*- perl -*-
#
# Copyright (C) 2011 Niels Thykier
#
# 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, you can find it on the World Wide
# Web at http://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
package Lintian::symlinks;
use strict;
use warnings;
use File::Basename qw(dirname);
use Lintian::Tags qw(tag);
sub run {
my $pkg = shift;
my $type = shift;
my $info = shift;
my $proc = shift;
my $group = shift;
my $ginfo = $group->info;
my $index = $info->index;
my @brokenlinks;
my @dindexes;
foreach my $file ($info->sorted_index) {
my $index_info = $index->{$file};
if ($index_info->is_symlink){
my $target = $index_info->link//''; # the link target
my $path; # the target (from the pkg root)
# Should not happen (too often) - but just in case
next unless $target;
# Skip usr/share/doc/<pkg> - we got a separate check for
# that.
next if $file eq "usr/share/doc/$pkg";
$path = $index_info->link_resolved;
# skip unresolvable links and links to "/"
next unless $path;
# Check if the destination is in the package itself
next if $index->{$path} || $index->{"$path/"};
$target =~ s,^/++,,o; # strip leading slashes (for reporting)
# Ignore links pointing to common things that may exist
# even if they are not shipped by any binary from this
# source package.
next if $path =~ m@man/man\d/undocumented@o or
$path =~ m@^etc/alternatives/@o or
$path =~ m@^usr/share/javascript/(?:[^/]++/)++[^/]+\.js$@o or
$path =~ m@^usr/share/fonts/[^/]++/.++$@o or # link to font dir or a font file
$path =~ m@^usr/share/java/[^/]+\.jar$@o or
$path eq 'lib/init/upstart-job';
# Skip langpack links (used in Ubuntu) - after we check that
# it appears to be consistent.
if ($path =~ m,/([^/]+)-langpack/,o) {
my $pre = $1;
my $t = $path;
$t =~ s,/\Q$pre\E-langpack/,/help/,;
next if $t eq $file;
}
# Possibly broken symlink
push @brokenlinks, [$file, $path, $target] unless $index->{$path};
}
}
return unless @brokenlinks;
# Check our dependencies:
foreach my $depproc (@{ $ginfo->direct_dependencies ($proc)}) {
push @dindexes, $depproc->info->index;
}
BLINK:
foreach my $blink (@brokenlinks){
my ($file, $path, $target) = @$blink;
foreach my $dindex (@dindexes){
# Is it in our dependency?
next BLINK if $dindex->{$path} || $dindex->{"$path/"};
}
# nope - not found in any of our direct dependencies.
tag 'package-contains-broken-symlink', $file, $target
}
}
1;
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
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