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# files/symbolic-links/broken -- 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 https://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::Check::Files::SymbolicLinks::Broken;
use v5.20;
use warnings;
use utf8;
use Const::Fast;
use File::Basename qw(dirname);
use List::SomeUtils qw(any);
use Moo;
use namespace::clean;
with 'Lintian::Check';
const my $EMPTY => q{};
const my $ASTERISK => q{*};
has wildcard_links => (is => 'rw', default => sub{ [] });
sub visit_installed_files {
my ($self, $item) = @_;
return
unless $item->is_symlink;
# target relative to the package root
my $path = $item->link_normalized;
# unresolvable link
unless (defined $path) {
$self->pointed_hint('package-contains-unsafe-symlink', $item->pointer);
return;
}
# will always have links to the package root (although
# self-recursive and possibly not very useful)
return
if $path eq $EMPTY;
# If it contains a "*" it probably a bad
# ln -s target/*.so link expansion. We do not bother looking
# for other broken symlinks as people keep adding new special
# cases and it is not worth it.
push(@{$self->wildcard_links}, $item)
if index($item->link, $ASTERISK) >= 0;
return;
}
sub installable {
my ($self) = @_;
return
unless @{$self->wildcard_links};
# get prerequisites from same source package
my @prerequisites
= @{$self->group->direct_dependencies($self->processable)};
for my $item (@{$self->wildcard_links}){
# target relative to the package root
my $path = $item->link_normalized;
# destination is in the package
next
if $self->processable->installed->lookup($path)
|| $self->processable->installed->lookup("$path/");
# does the link point to any prerequisites in same source package
next
if
any {$_->installed->lookup($path) || $_->installed->lookup("$path/")}
@prerequisites;
# link target
my $target = $item->link;
# strip leading slashes for reporting
$target =~ s{^/+}{};
# nope - not found in any of our direct dependencies. Ergo it is
# a broken "ln -s target/*.so link" expansion.
$self->pointed_hint('package-contains-broken-symlink-wildcard',
$item->pointer, $target);
}
return;
}
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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