1 files changed, 141 insertions, 0 deletions
diff --git a/lib/Lintian/Check/Binaries/Architecture/Other.pm b/lib/Lintian/Check/Binaries/Architecture/Other.pm
new file mode 100644
index 0000000..b40811f
--- /dev/null
+++ b/lib/Lintian/Check/Binaries/Architecture/Other.pm
@@ -0,0 +1,141 @@
+# binaries/architecture/other -- 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::Architecture::Other;
+
+use v5.20;
+use warnings;
+use utf8;
+
+use Const::Fast;
+
+use Moo;
+use namespace::clean;
+
+with 'Lintian::Check';
+
+# Guile object files do not objdump/strip correctly, so exclude them
+# from a number of tests. (#918444)
+const my $GUILE_PATH_REGEX => qr{^usr/lib(?:/[^/]+)+/guile/[^/]+/.+\.go$};
+
+has ARCH_REGEX => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        my %arch_regex;
+
+        my $data = $self->data->load('binaries/arch-regex', qr/\s*\~\~/);
+        for my $architecture ($data->all) {
+
+            my $pattern = $data->value($architecture);
+            $arch_regex{$architecture} = qr{$pattern};
+        }
+
+        return \%arch_regex;
+    }
+);
+
+has ARCH_64BIT_EQUIVS => (
+    is => 'rw',
+    lazy => 1,
+    default => sub {
+        my ($self) = @_;
+
+        return $self->data->load('binaries/arch-64bit-equivs',qr/\s*\=\>\s*/);
+    }
+);
+
+sub from_other_architecture {
+    my ($self, $item) = @_;
+
+    my $architecture = $self->processable->fields->value('Architecture');
+
+    return 0
+      if $architecture eq 'all';
+
+    # If it matches the architecture regex, it is good
+    return 0
+      if exists $self->ARCH_REGEX->{$architecture}
+      && $item->file_type =~ $self->ARCH_REGEX->{$architecture};
+
+    # Special case - "old" multi-arch dirs
+    if (   $item->name =~ m{(?:^|/)lib(x?\d\d)/}
+        || $item->name =~ m{^emul/ia(\d\d)}) {
+
+        my $bus_width = $1;
+
+        return 0
+          if exists $self->ARCH_REGEX->{$bus_width}
+          && $item->file_type =~ $self->ARCH_REGEX->{$bus_width};
+    }
+
+    # Detached debug symbols could be for a biarch library.
+    return 0
+      if $item->name =~ m{^usr/lib/debug/\.build-id/};
+
+    # Guile binaries do not objdump/strip (etc.) correctly.
+    return 0
+      if $item->name =~ $GUILE_PATH_REGEX;
+
+    # Allow amd64 kernel modules to be installed on i386.
+    if (   $item->name =~ m{^lib/modules/}
+        && $self->ARCH_64BIT_EQUIVS->recognizes($architecture)) {
+
+        my $equivalent_64 = $self->ARCH_64BIT_EQUIVS->value($architecture);
+
+        return 0
+          if $item->file_type =~ $self->ARCH_REGEX->{$equivalent_64};
+    }
+
+    # Ignore i386 binaries in amd64 packages for right now.
+    return 0
+      if $architecture eq 'amd64'
+      && $item->file_type =~ $self->ARCH_REGEX->{i386};
+
+    return 1;
+}
+
+sub visit_installed_files {
+    my ($self, $item) = @_;
+
+    return
+      unless $item->is_file;
+
+    return
+      unless $item->file_type =~ /^ [^,]* \b ELF \b /x;
+
+    $self->pointed_hint('binary-from-other-architecture', $item->pointer)
+      if $self->from_other_architecture($item);
+
+    return;
+}
+
+1;
+
+# Local Variables:
+# indent-tabs-mode: nil
+# cperl-indent-level: 4
+# End:
+# vim: syntax=perl sw=4 sts=4 sr et