1 files changed, 86 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Binaries/DebugSymbols/Detached.pm b/lib/Lintian/Check/Binaries/DebugSymbols/Detached.pm
new file mode 100644
index 0000000..b4f9a4f
--- /dev/null
+++ b/lib/Lintian/Check/Binaries/DebugSymbols/Detached.pm
@@ -0,0 +1,86 @@
+# binaries/debug-symbols/detached -- lintian check script -*- perl -*-
+
+# Copyright (C) 1998 Christian Schwarz and Richard Braakman
+# Copyright (C) 2012 Kees Cook
+# Copyright (C) 2017-2020 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::Binaries::DebugSymbols::Detached;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use List::Compare;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+sub visit_installed_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    return
+      unless $item->file_type =~ /^ [^,]* \b ELF \b /x;
+
+    return
+      unless $item->file_type =~ m{ executable | shared [ ] object }x;
+
+    # Detached debugging symbols directly in /usr/lib/debug.
+    $self->pointed_hint('debug-symbols-directly-in-usr-lib-debug',
+        $item->pointer)
+      if $item->dirname eq 'usr/lib/debug/';
+
+    return
+      unless $item->name
+      =~ m{^ usr/lib/debug/ (?:lib\d*|s?bin|usr|opt|dev|emul|\.build-id) / }x;
+
+    $self->pointed_hint('debug-symbols-not-detached', $item->pointer)
+      if exists $item->elf->{NEEDED};
+
+    # Something other than detached debugging symbols in
+    # /usr/lib/debug paths.
+    my @KNOWN_DEBUG_SECTION_NAMES
+      = qw{.debug_line .zdebug_line .debug_str .zdebug_str};
+
+    my @elf_sections = values %{$item->elf->{'SECTION-HEADERS'}};
+    my @have_section_names = map { $_->name } @elf_sections;
+
+    my $lc_name
+      = List::Compare->new(\@have_section_names, \@KNOWN_DEBUG_SECTION_NAMES);
+
+    my @have_debug_sections = $lc_name->get_intersection;
+
+    $self->pointed_hint('debug-file-with-no-debug-symbols', $item->pointer)
+      unless @have_debug_sections;
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et