1 files changed, 132 insertions, 0 deletions
diff --git a/lib/Lintian/Check/ControlFiles.pm b/lib/Lintian/Check/ControlFiles.pm
new file mode 100644
index 0000000..d0c44a2
--- /dev/null
+++ b/lib/Lintian/Check/ControlFiles.pm
@@ -0,0 +1,132 @@
+# control-files -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 2017 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::ControlFiles;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+
+const my $SPACE => q{ };
+const my $SLASH => q{/};
+
+const my $WIDELY_EXECUTABLE => oct(111);
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+has ships_ctrl_script => (is => 'rw', default =>  0);
+
+sub visit_control_files {
+    my ($self, $item) = @_;
+
+    my $type = $self->processable->type;
+    my $processable = $self->processable;
+
+    my $DEB_PERMISSIONS
+      = $self->data->load('control-files/deb-permissions',qr/\s+/);
+    my $UDEB_PERMISSIONS
+      = $self->data->load('control-files/udeb-permissions',qr/\s+/);
+
+    my $ctrl = $type eq 'udeb' ? $UDEB_PERMISSIONS : $DEB_PERMISSIONS;
+    my $ctrl_alt = $type eq 'udeb' ? $DEB_PERMISSIONS : $UDEB_PERMISSIONS;
+
+    # the control.tar.gz should only contain files (and the "root"
+    # dir, but that is excluded from the index)
+    if (!$item->is_regular_file) {
+
+        $self->pointed_hint('control-file-is-not-a-file', $item->pointer);
+        # Doing further checks is probably not going to yield anything
+        # remotely useful.
+        return;
+    }
+
+    # valid control file?
+    unless ($ctrl->recognizes($item->name)) {
+
+        if ($ctrl_alt->recognizes($item->name)) {
+            $self->pointed_hint('not-allowed-control-file', $item->pointer);
+
+        } else {
+            $self->pointed_hint('unknown-control-file', $item->pointer);
+        }
+
+        return;
+    }
+
+    my $experm = oct($ctrl->value($item->name));
+
+    $self->pointed_hint('control-file-is-empty', $item->pointer)
+      if $item->size == 0
+      && $item->basename ne 'md5sums';
+
+    # skip `control' control file (that's an exception: dpkg
+    # doesn't care and this file isn't installed on the systems
+    # anyways)
+    return
+      if $item->name eq 'control';
+
+    my $operm = $item->operm;
+    if ($item->is_executable || $experm & $WIDELY_EXECUTABLE) {
+
+        $self->ships_ctrl_script(1);
+        $self->pointed_hint('ctrl-script', $item->pointer);
+    }
+
+    # correct permissions?
+    unless ($operm == $experm) {
+
+        $self->pointed_hint('control-file-has-bad-permissions',
+            $item->pointer,sprintf('%04o != %04o', $operm, $experm));
+    }
+
+    # correct owner?
+    unless ($item->identity eq 'root/root' || $item->identity eq '0/0') {
+
+        $self->pointed_hint('control-file-has-bad-owner',$item->pointer,
+            $item->identity,'!= root/root (or 0/0)');
+    }
+
+    # for other maintainer scripts checks, see the scripts check
+
+    return;
+}
+
+sub installable {
+    my ($self) = @_;
+
+    $self->hint('no-ctrl-scripts')
+      unless $self->ships_ctrl_script;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et