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+# files/symbolic-links/broken -- lintian check script -*- perl -*-
+#
+# Copyright (C) 2020 Felix Lechner
+# Copyright (C) 2020 Chris Lamb <lamby@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, 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::Hierarchy::Links;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+use File::Basename;
+use List::SomeUtils qw(any first_value);
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+const my $EMPTY => q{};
+const my $SLASH => q{/};
+const my $ARROW => q{ -> };
+
+sub visit_installed_files {
+ my ($self, $item) = @_;
+
+ # symbolic links only
+ return
+ unless $item->is_symlink;
+
+ my $target = $item->link_normalized;
+ return
+ unless defined $target;
+
+ my @ldconfig_folders = @{$self->data->architectures->ldconfig_folders};
+
+ my $origin_dirname= first_value { $item->dirname eq $_ } @ldconfig_folders;
+
+ # look only at links originating in common ld.so load paths
+ return
+ unless length $origin_dirname;
+
+ my $target_dirname
+ = first_value { (dirname($target) . $SLASH) eq $_ } @ldconfig_folders;
+ $target_dirname //= $EMPTY;
+
+ # no subfolders
+ $self->pointed_hint('ldconfig-escape', $item->pointer, $target)
+ unless length $target_dirname;
+
+ my @multiarch= values %{$self->data->architectures->deb_host_multiarch};
+
+ $self->pointed_hint('architecture-escape', $item->pointer, $target)
+ if (any { basename($origin_dirname) eq $_ } @multiarch)
+ && (any { $target_dirname eq "$_/" } qw{lib usr/lib usr/local/lib});
+
+ return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et