1 files changed, 109 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Files/Banned/Lenna.pm b/lib/Lintian/Check/Files/Banned/Lenna.pm
new file mode 100644
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+++ b/lib/Lintian/Check/Files/Banned/Lenna.pm
@@ -0,0 +1,109 @@
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 1999 Joey Hess
+# Copyright (C) 2000 Sean 'Shaleh' Perry
+# Copyright (C) 2002 Josip Rodin
+# Copyright (C) 2007 Russ Allbery
+# Copyright (C) 2013-2018 Bastien ROUCARIES
+# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
+# Copyright (C) 2020-2021 Felix Lechner
+#
+# 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::Banned::Lenna;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+# known bad files
+has LENNA_BLACKLIST => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        my %blacklist;
+
+        my $data = $self->data->load('files/banned/lenna/blacklist',
+            qr/ \s* ~~ \s* /x);
+
+        for my $md5sum ($data->all) {
+
+            my $value = $data->value($md5sum);
+
+            my ($sha1, $sha256, $name, $link)
+              = split(/ \s* ~~ \s* /msx, $value);
+
+            $blacklist{$md5sum} = {
+                'sha1'   => $sha1,
+                'sha256' => $sha256,
+                'name'   => $name,
+                'link'   => $link,
+            };
+        }
+
+        return \%blacklist;
+    }
+);
+
+# known good files
+has LENNA_WHITELIST => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        return $self->data->load('files/banned/lenna/whitelist');
+    }
+);
+
+sub visit_patched_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    return
+      unless $item->file_type =~ /\bimage\b/i
+      || $item->file_type =~ /^Matlab v\d+ mat/i
+      || $item->file_type =~ /\bbitmap\b/i
+      || $item->file_type =~ /^PDF Document\b/i
+      || $item->file_type =~ /^Postscript Document\b/i;
+
+    return
+      if $self->LENNA_WHITELIST->recognizes($item->md5sum);
+
+    # Lena Soderberg image
+    $self->pointed_hint('license-problem-non-free-img-lenna', $item->pointer)
+      if $item->basename =~ / ( \b | _ ) lenn?a ( \b | _ ) /ix
+      || exists $self->LENNA_BLACKLIST->{$item->md5sum};
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et