1 files changed, 69 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Libraries/Shared/Stack.pm b/lib/Lintian/Check/Libraries/Shared/Stack.pm
new file mode 100644
index 0000000..f3e1d03
--- /dev/null
+++ b/lib/Lintian/Check/Libraries/Shared/Stack.pm
@@ -0,0 +1,69 @@
+# libraries/shared/stack -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz
+# Copyright (C) 2018-2019 Chris Lamb <lamby@debian.org>
+# Copyright (C) 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::Libraries::Shared::Stack;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+sub visit_installed_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    # shared library
+    return
+      unless @{$item->elf->{SONAME} // [] };
+
+    $self->pointed_hint('shared-library-lacks-stack-section',$item->pointer)
+      if $self->processable->fields->declares('Architecture')
+      && !exists $item->elf->{PH}{STACK};
+
+    $self->pointed_hint('executable-stack-in-shared-library', $item->pointer)
+      if exists $item->elf->{PH}{STACK}
+      && $item->elf->{PH}{STACK}{flags} ne 'rw-'
+     # Once the following line is removed again, please also remove
+     # the Test-Architectures line in
+     # t/recipes/checks/libraries/shared/stack/shared-libs-exec-stack/eval/desc
+     # and the MIPS-related notes in
+     # tags/e/executable-stack-in-shared-library.tag. See
+     # https://bugs.debian.org/1025436 and
+     # https://bugs.debian.org/1022787 for details
+      && $self->processable->fields->value('Architecture') !~ /mips/;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et